JPH0430693Y2 - - Google Patents

Description

[Detailed explanation of the idea] Hereinafter, the present invention will be explained in the following order.

A. Field of industrial application B. Overview of the invention C. Conventional technology D. Problem that the invention attempts to solve E. Means for solving the problem F. Effect G. Example G-1 Tape cassette (Figs. 6 to 9) ) G-2 PCM audio tape recorder equipped with a cassette mounting device G-3 Cassette mounting device (Figures 1 to 5) G-3a Cassette holding device G-3b Sliding frame locking mechanism G-3c Cassette case movement operation Means G-3d Cassette case ejection lever G-4 Tape cassette loading device (Figure 1, Figure 3)
(from Figures 5, 8 and 9) G-5 Tape cassette removal operation (1st
(Figs. 3 to 5) H Effect of the invention A Industrial application field The present invention relates to a tape cassette mounting device applied to a magnetic recording/reproducing device such as a cassette type tape recorder. A tape cassette is inserted into and removed from the tape cassette, which is equipped with a sliding plate that is located in a position that closes the insertion hole for the reel shaft formed in the case, and that must be moved to a position that opens the insertion hole during use. The present invention relates to a tape cassette mounting device which is moved between a possible position and a tape cassette mounting position and opens the insertion hole for the reel shaft insertion when the tape cassette reaches the tape cassette mounting position.

B. Summary of the invention The present invention is movably attached to the bottom side of a cassette case housing a pair of tape reels wound with magnetic tape, and when not in use, the above-mentioned tape reel formed on the bottom of the cassette case is attached. A tape cassette equipped with a sliding plate that is positioned to close the insertion hole for the reel shaft that engages the tape reel and is moved to a position that opens the insertion hole when in use is inserted into the tape cassette on the outside of the casing. In a tape cassette mounting device that carries out a transfer operation between a removable position and a tape cassette mounting position inside a housing, a cassette holder is provided with a locking means for holding the tape cassette and locking the sliding plate. is mounted so that it can move up and down, and is supported by a pair of slide guide shafts provided inside the housing so as to be movable inside and outside the housing.When the sliding frame reaches the tape cassette mounting position, the sliding frame A so-called push-push type locking mechanism is provided which locks the tape cassette and releases the lock when the tape cassette is moved further inward from the tape cassette installation position. When the cassette case is moved inward, it is rotated and presses the cassette case, and by moving the cassette case against the sliding plate that is locked by the locking means, the sliding plate is inserted into the reel shaft. This function is performed when the sliding frame is moved inward into the housing after the sliding plate reaches the position where the insertion hole for the reel shaft is opened, and the sliding plate is moved relative to the position where the general-purpose insertion hole is opened. By providing a tape cassette moving operation means having a limiter mechanism that allows the tape cassette to be moved manually, the tape cassette movement operation means can be moved manually, and the above-mentioned tape cassette moving operation means can be moved by manual operation. The difference in the amount of movement of the cassette case by the cassette case movement operation means is absorbed to ensure the opening of the insertion hole for the insertion of the reel shaft.

C. Prior Art Conventionally, a digital audio tape recorder has been proposed in which an audio signal is pulse-coded and recorded.

This type of tape recorder records audio signals at extremely high density on the magnetic tape, which is the recording medium, so if dust adheres to the magnetic tape, the recorded signal will be lost in that area, resulting in poor recording and playback characteristics. It becomes impossible to maintain. Therefore, the tape cassette containing the magnetic tape used in the above-mentioned tape recorder is constructed so that it can be sealed when not in use, in order to prevent dust from entering the tape cassette. That is, the front side of the tape cassette, which is the magnetic tape drawer side, is covered with a front cover that is rotated to open and close the front side, and an insertion hole for inserting the reel shaft provided on the bottom side of the tape cassette is covered. It is covered with a sliding plate that opens and closes.

As described above, the tape cassette mounting device for mounting a tape cassette equipped with at least a sliding plate in a predetermined mounting position of a tape recorder moves the sliding plate before the tape cassette is mounted in the mounting position. It is necessary to open the insertion hole for the reel shaft insertion. As a tape cassette mounting device for mounting such a tape cassette at a predetermined mounting position of a tape recorder, the applicant has proposed the device as described in the specification and drawings of Japanese Patent Application No. 123697/1982. .

The tape cassette mounting device proposed here is
The cassette holding means includes a sliding frame that is horizontally movable in and out of the casing that constitutes the tape recorder main body, and a cassette holder that is vertically movably supported by the sliding frame. A tape cassette mounting operation is performed by inserting and holding a tape cassette equipped with a plate, and moving this cassette holding means to the cassette mounting position inside the housing using a drive motor for tape loading. be. That is, when the cassette holding means is moved toward the cassette mounting position, a part of the cassette holding means is operated by the movement of the cassette holding means, and is operated to press the cassette case. A cassette case moving operation means is provided for relatively moving the sliding plate to a position where the insertion hole of the cassette case is opened by pressing the cassette case, and the cassette case is moved by the cassette case moving operation means. By moving the cassette case, the sliding plate can be moved to a position where the insertion hole is relatively opened.

By the way, the cassette case moving operation means in the tape cassette mounting device constructed as described above is rotatably mounted via a support shaft installed on the front end side of the sliding frame constituting the cassette holding means, and the cassette case moving operation means is rotatably mounted on one end of the sliding frame that constitutes the cassette holding means. A cassette case pressing lever with a case pressing pin erected and a pressed pin erected at the other end, a spring for rotationally biasing this cassette case pressing lever, and the cassette holding means are drawn into the casing and moved. and an abutting plate against which the pressed pin contacts and rotates the cassette case pressing lever against the biasing force of the spring. That is, the cassette case pressing plate is rotatably biased by a spring so that the cassette case pressing pin at one end rotates outward of the cassette holding means, and the cassette case pressing pin is rotated inside the cassette holding portion of the cassette holding means. It is held in a state where it escapes from the outside. Then, in the process of drawing and moving the cassette holding means into which the tape cassette is inserted and held, into the housing, the pressed pin at the other end comes into contact with the abutting plate, so that the cassette case pressing lever resists the spring biasing force. The cassette case is rotated and the cassette case is moved using the unconventional cassette case pressing pin. At this time, the sliding plate of the tape cassette is kept in a locked state by the locking means provided on the cassette holding means.
By moving the cassette case, the sliding plate is relatively moved to a position where the through hole for inserting the reel shaft is opened.

D. Problems to be Solved by the Invention Incidentally, the tape cassette loading device configured as described above moves the cassette holding means including the sliding frame inside and outside the casing using the drive motor for tape loading. Therefore, the mechanism for moving the cassette holding means inside and outside the housing becomes complicated.

In addition, the cassette case moving operation means in the tape cassette mounting device is configured such that the cassette case pressing lever, which is rotatably attached to a support shaft and biased to rotate by a spring, is moved by the cassette holding means to the cassette mounting position within the casing. The cassette case of the tape cassette is simply moved by rotating it against the biasing force of the spring in the process of being moved toward the tape cassette. The amount of pressing movement of the cassette case becomes inconsistent depending on the amount of pressure. That is,
Since tape cassettes vary in size within an allowable dimensional error range, the amount of pressing movement of the cassette case varies within this error range. Therefore, if a tape cassette has a dimensional error larger than the standard dimension, even if the sliding plate is moved to a position where the insertion hole for inserting the reel shaft is relatively opened, the cassette case will not be removed by the cassette case pressing lever. There is a risk of damage due to excessive pressure. In addition, for tape cassettes with dimensional errors smaller than the standard dimensions, the pressing operation by the cassette case pressing lever is completed before the sliding plate is moved to the position where the insertion hole for inserting the reel shaft is relatively opened. This may result in the insertion hole not being completely opened.

Further, an installation error of the cassette case pressing lever or a dimensional error of the cassette case pressing lever may also cause unnecessary pressing of the cassette case or incomplete opening of the insertion hole.

Therefore, the present invention has been devised so that the tape cassette can be manually operated between the tape cassette insertion/removal position outside the housing and the tape cassette installation position inside the housing by manual operation without using a drive motor or other drive means for tape loading. In addition to making it possible to transfer the tape cassette, the insertion hole for inserting the reel shaft can be reliably opened without applying unnecessary load to the cassette case while absorbing dimensional errors of the tape cassette, and the cassette case can be moved. It is an object of the present invention to provide a tape cassette mounting device that can prevent unnecessary pressing of the cassette case caused by installation errors of operating means, ensure reliable opening of the insertion hole, and protect the tape cassette.

E. Means for Solving the Problems The present invention solves the problems of the previously proposed cassette loading device as described above, and in order to achieve the above object, a pair of tape reels wound with magnetic tape is used. It is movably attached to the bottom side of the cassette case that houses the cassette case, and when not in use, it is located in a position that blocks the insertion hole formed in the bottom of the cassette case for inserting the reel shaft that engages with the tape reel. When in use, a tape cassette equipped with a sliding plate that is moved to a position where the insertion hole is opened is moved between a tape cassette insertable/removable position outside the housing and a tape cassette mounting position inside the housing. In the tape cassette mounting device, a cassette holder that holds the tape cassette and is provided with a locking means for locking the sliding plate is mounted so as to be movable up and down, and is attached to a pair of slide guide shafts provided in the housing. A sliding frame is movably supported inside and outside of the housing, and when the sliding frame reaches the tape cassette mounting position, the sliding frame is locked, and the sliding frame is moved further inside the housing from the tape cassette mounting position. a lock mechanism that releases the lock when the sliding frame is moved inward; and a rotation operating means that is attached to the sliding frame and provided on the housing side when the sliding frame is moved inward. After abutting against the rotating operation means, the sliding plate is rotated by the movement of the sliding frame inward into the casing and presses the cassette case, and the sliding plate is locked by the locking means. On the other hand, by moving the cassette case, the sliding plate is relatively moved to a position where the insertion hole for inserting the reel shaft is opened, and this sliding plate reaches a position where the insertion hole for the reel shaft insertion is opened. The apparatus further includes tape cassette moving operation means having a limiter mechanism that functions when the sliding frame is moved inward of the housing.

F Function The present invention is such that the tape cassette held in the cassette holder is transferred to the tape cassette mounting position in the casing by manually pushing the sliding frame to which the cassette holder is attached into the casing, and the sliding frame is As soon as the moving frame is locked,
In the process of moving the sliding frame inward into the housing, the cassette case of the tape cassette is moved by the cassette case moving operation means, and the sliding plate reaches a position where the insertion hole for inserting the reel shaft is relatively opened. Further, after the sliding plate reaches a position where the insertion hole for passing the reel shaft is relatively opened, the sliding frame is moved inward within the housing while the limiter mechanism of the tape cassette moving operation means is functioning. ing.

G. Embodiments Hereinafter, specific embodiments of the cassette mounting device according to the present invention will be described with reference to the drawings.

G-1 Tape cassette (FIGS. 6 to 9) Before explaining a specific embodiment of the cassette mounting device according to the present invention, a tape cassette that is mounted by a lever device will be described.

This tape cassette 1 is for PCM (Pulse Code Modulation) audio, and as shown in Figs.
have.

A pair of tape reels 6 and 7 are rotatably housed in the cassette case 2, and a magnetic tape 5 is wound between these tape reels 6 and 7. A front cover 9 is rotatably attached to the front side of the cassette case 2 from which the magnetic tape 5 is pulled out of the cassette case 2, and covers the front side of the cassette case 2 when the magnetic tape 5 is not in use.
We are trying to protect the

In addition, on the bottom side of the cassette case 2, there is a seventh
8 and 9, a sliding plate 1 closes a pair of insertion holes 8, 8 for inserting reel shafts formed in the bottom of the cassette case 2 when not in use.
0 is attached so as to be slidable in the front and rear directions. That is, this sliding plate 10 is formed in a U-shape so as to be able to cover both sides from the bottom of the cassette case 2, and covers both opposing side plates 12, 1 of the bottom plate 11.
The cassette case 2 is slidably attached to the cassette case 2 by engaging guide grooves 14, 14 provided on both sides of the cassette case 2 with guide protrusions 13, 13 protruding from the cassette case 2, respectively. A pair of projecting pieces 15, 15 are provided on the front edge of the sliding plate 10, and when the sliding plate 10 is biased and moved by a torsion spring 18, which will be described later, the sliding plate 10 locks onto the front side of the cassette case 2. The movement position is regulated. In addition, the above protrusion 1
At the lower edge of the front cover 9 corresponding to the openings 5 and 15, cutouts 9a and 9a are formed to serve as escape parts when the cassette case 2 moves relative to the sliding plate 10.

Furthermore, as shown in FIG. 8, the rear side portion of the magnetic tape 5 stretched along the front opening of the cassette case 2 is connected to a tape recorder that pulls out and guides the magnetic tape 5 to a predetermined tape running path. A tape loading means insertion space 16 is formed into which the tape loading means provided on the side enters. A torsion spring 18 is attached to one side of this space 16 via a support 17,
One end of this torsion spring 18 engages with a spring hook 19 protruding from the front edge of the sliding plate 10, and the sliding plate 10 closes the space 16 and the insertion holes 8, 8 of the cassette case 2. It is biased to move forward.

Further, a pair of insertion holes 20, 20 are formed in the bottom plate portion 11 of the sliding plate 10, and when the sliding plate 10 is retreated, the insertion holes 20, 20 are formed in the bottom plate portion 11 of the sliding plate 10. The holes 20, 20 are aligned with the insertion holes 8, 8 formed in the bottom plate of the lower half 4, so that a reel shaft for driving a reel provided in the PCM audio tape recorder can enter into the cassette case 2. ing. And the sliding plate 10
is moved forward to close the lower part of the space 16 of the cassette case 2 as shown in FIG. The positions of the insertion holes 8, 8 are shifted from each other, and the insertion holes 8, 8 are aligned with the bottom plate part 1 of the sliding plate 10.
1 is occluded.

Further, the bottom plate portion 11 of the sliding plate 10 has a protrusion that is a locking release means for releasing the locking means of the sliding plate 10 formed on the bottom plate of a cassette holder provided in a tape recorder, which will be described later. Shallow grooves 22 into which the stripes enter are formed. This shallow groove 22
is formed by opening the front edge side of the sliding plate 10 in the front-rear direction of the sliding plate 10. The shallow groove 22 has the sliding plate 10 in the closed position where the opening 16 and the insertion holes 8, 8 of the cassette case 2 are closed, and in the open position where the opening 16 and the insertion holes 8, 8 are opened. An engagement hole 26 and an engagement notch 25 are formed into which an engagement protrusion 24 of a lock piece 23 provided on the cassette case 2, which serves as a locking means for locking the sliding plate 10, engages.

The locking piece 23 is formed by forming a U-shaped cut groove in the bottom plate of the lower half 4 so that the rear end thereof is connected to the bottom plate of the lower half 4 and extends in the front-rear direction so that the front end thereof is flexible. A hemispherical engagement protrusion 29 is integrally formed on the lower surface of the front end.

As shown in FIGS. 7 and 9, when the sliding plate 10 is closed, the engaging protrusion 24 at the tip of the lock piece 23 engages with the engaging hole 26 provided in the sliding plate 10. However, the sliding plate 10 is locked so that it does not move toward the open position. In this state, the engagement protrusion 24 protrudes downward from the engagement hole 26 but does not protrude from within the shallow groove 22.

G-2 PCM audio tape recorder equipped with a cassette mounting device A tape cassette 1 as described above is mounted,
A PCM audio tape recorder in which the tape cassette mounting device according to the present invention is incorporated has an outlet 32 on the front side of a casing 31 constituting the main body of the tape recorder, and the casing 3 is inserted through the outlet 32 into the casing 3.
A sliding frame 3 that is moved horizontally in and out of the frame 1
3, a cassette holding device 36 which is a cassette holding means including a cassette holder 34 which is vertically movably supported by the sliding frame 33, and a holder frame 35 which is attached to the sliding frame 33.

G-3 Cassette mounting device (Figs. 1 to 5) The cassette mounting device according to the present invention has the above-mentioned casing 3.
The cassette holding device 36 is slidably attached to the inside and outside of the casing 31 via a pair of slide guide shafts 38 and 39 provided on a chassis 37 provided inside the cassette 31.

G-3a Cassette Holding Device By the way, the cassette holding device 36 constituting the cassette mounting device according to the present invention has a pair of slide guide shafts 3 provided on the chassis 37 described above.
8, 39, and as shown in FIGS. 1 and 2, a sliding frame 33 is slidably supported by slide guide shafts 38, 39, and this sliding A cassette holder 34 is supported by the frame 33 so as to be movable up and down, and the cassette holder 34 is attached to the sliding frame 33.
In addition, the holder frame 35 constitutes the cassette holding section 40.

As shown in FIG. 2, the sliding frame 33 includes a pair of opposing side plates 41 and 42, and
and a front plate 43 attached across the front side of 42.
and a crosspiece 44 that is attached across the rear upper surfaces of the side plates 41 and 42. The pair of side plates 41 and 42 have front portions bent downward in a substantially crank shape when viewed from the side, and supporting pieces 45 and 45 extending inwardly from the lower edges of the crank-shaped portions. ...is installed protrudingly. The front plate 43 includes the support pieces 45, 45...
The pair of side plates 41, 4 are screwed together through
It is installed between the two. This front plate 43 is provided with a cassette pushing lever and the like constituting a tape cassette transfer means to be described later. In addition, the above-mentioned crosspiece 44
A tape cassette ejection lever, which will be described later, is attached to the cassette.

Guide blocks 47 and 48, through which the slide guide shafts 38 and 39 are inserted, are attached to the rear outer surfaces of the pair of side plates 41 and 42. These guide blocks 47, 48 are
Guide shaft support parts 51 and 52 in which guide shaft insertion grooves 49 and guide shaft insertion holes 50 are formed are provided on one side, and slide guide shafts 38 and 39 are inserted into these guide shaft insertion grooves 49 and guide shaft insertion holes 50. This supports the sliding frame 33 so that it can freely slide inside and outside the housing 31.

By the way, the slide guide shafts 38 and 39 that slidably support the sliding frame 33 have both ends attached to a pair of guide shaft support pieces 5 provided on the chassis 37.
3,54. Further, on the rear end side of the slide guide shafts 38 and 39, which is the inner side of the housing 31, the cassette holding device 36 is moved to a position corresponding to the tape cassette mounting position pulled into the housing 31. When the cassette holding device 36 is pulled out of the casing 31, the cassette holding device 36 is compressed by the guide blocks 47, 48 with an elastic restoring force. Coil springs 55 and 56 are inserted and pressed outward. These coil springs 55 and 56 are connected to the slide guide shaft 3.
The mounting position relative to the slide guide shafts 38 and 39 is regulated by a holding ring 57 fitted to the slide guide shafts 8 and 39.

Note that the sliding frame 33 is connected to the guide blocks 47, 4.
8 reaches the position where it comes into contact with the other guide shaft support pieces 54 and 54 on the front side that support the slide guide shafts 38 and 39, and the front part thereof is pulled out of the housing 31 from the outlet 32 formed in the housing 31. The tape cassette is located at a position where it can be inserted and removed.

Further, the cassette holder 34, which is supported by the sliding frame 33 so as to be vertically movable, is supported in the left-right direction (width direction).
A long substantially square bottom plate 58 and short side plates 58 rising from both left and right edges of the bottom plate 58.
a and 58b to form a substantially U-shape when viewed from the front and rear directions. The bottom plate 58 of the cassette holder 34 has insertion holes 56 and 59 for inserting reel shafts located apart from each other in the left and right direction.
is drilled. In addition, an inverted trapezoidal notch 60 is formed in the center of the rear edge of the bottom plate 58, and a tape cassette 1 is formed in a portion of the notch 60 that protrudes slightly rearward at a portion continuous with both ends of the notch 60.
a sliding regulating protrusion 61 that comes into contact with the protruding pieces 15 provided on the sliding plate 10 and restricts the movement of the sliding plate 10;
is rising and forming. Furthermore, the sliding frame 33
Of the rear end edge of the bottom plate 58, a position that is a certain distance forward from a position that is close to the side plate 58b from the slide regulating protrusion 61 on the right side in FIG. 2 and behind the insertion holes 59, 59 for inserting the reel shaft. A protrusion 62 is formed between the end and a substantially corresponding position for pressing a lock piece 23 provided on the cassette case 2 that locks the sliding plate 10 of the tape cassette 1.

Cassette holder 34 formed as described above
is vertically movably supported by the sliding frame 33 with a pair of left and right rotation support arms 63, 64 and 65, 66. These left and right pairs of rotary support arms 63, 64 and 65, 66 are pivoted at their substantially central portions by pivot pins 67, 68, and are rotatably connected to each other so as to open and close. Then, the pair of left and right rotation support arms 63, 64 and 6 are provided.
Among the rotary support arms 63 and 66, one of them is located on the outer side with respect to the cassette holder 34.
The pin insertion holes 69 and 70 are drilled here on the upper end side.
Each side plate 58a, 58b of the cassette holder 34
The sliding frame 33 is rotatably supported by inserting movable pins 73 and 74 inserted into and engaged with guide elongated holes 71 and 72 bored in each side plate 41 and 42 of the sliding frame 33, and the lower end side is , pin insertion hole 75 drilled here,
76 to the left and right side plates 58a of the cassette holder 34,
It is rotatably supported by inserting fixing pins 77 and 78 protruding from 58b. In addition, the above-mentioned pairs of left and right rotation support arms 63, 64 and 65, 66 are provided.
The lower ends of the other rotary support arms 64, 66 located inwardly with respect to the cassette holder 34 have pin insertion holes 79, 80 drilled here, which are inserted into the side plates 58a, 58b of the cassette holder 34. The movable pins 83 and 84 which are slidably engaged with the provided guide elongated holes 81 and 82 are inserted and rotatably supported.
Fixing pins 88 and 89 protruding from the side plates 41 and 42 of the sliding frame 33 are inserted into the slide frame 33 to be rotatably supported.

As shown in FIG. 3, the cassette holder 34 has rotating support arms 63 and 6 connected so that side plates 58a and 58b cross each other.
4 and the side plate 4 of the sliding frame 33 via 65 and 66.
1, 42, and the rotation support arm 63,
By changing the opening angles of 64, 65, and 66, the sliding frame 33 is moved in the vertical direction.

Further, the cassette holder 34 is secured to the sliding frame 3 by a tension spring 90 as shown in FIG.
3 in the direction of the raised position.
This tension spring 90 includes one of a pair of arm support pins 91 and 92 protruding from the inner surfaces of the side plates 41 and 42 of the sliding frame 33 and a guide provided protruding from one side plate 41 of the sliding frame 33. It is stretched between the movable pins 73 inserted into the elongated holes 71, and the movable pins 7
3 to the rear of the sliding frame 33. Therefore, since the upper end of one of the pair of rotational support arms 63, 64, which is located on the outside with respect to the set holder 34, is pulled toward the rear of the sliding frame 33, the inner The upper end of the other rotary support arm 64 located on the other side will be moved relatively forward. As a result, one of the rotation support arms 6
A force directed diagonally backward and upward is applied to 3, and a force directed diagonally forward and upward is applied to the other rotary support arm 64, and the resultant force of these two forces is the force directed upward. As the force acts on the pivot pin 67, the pair of rotation support arms 63,
64, a rotational force acts on each other in the direction of increasing the opening angle. And this rotational force is
Since the lower ends of at least the pair of rotational support arms 63 and 64 include an upward component, the moving pin 83 and the fixed pin 77
This acts as a force to pull the cassette holder 34 upwards.

Due to the tensile force of the tension spring 90, a biasing force is always applied to the cassette holder 34 to move it upward, so that the bottom plate 58 is slightly lower than the front plate 43 of the sliding frame 33. It is held in the elevated position, which is the position that reaches the highest point.

Furthermore, the tensile force of the tension spring 90 is
It is transmitted to the other pair of rotation support arms 66, 67 via a pair of rotation arms 93, 94 and a connecting rod 95 that connects these rotation arms 93, 94.

At the front ends of these rotating arms 93, 94, notches 96, 96 are formed as elongated holes extending along the longitudinal direction of these rotating arms 93, 94. are slidably engaged with fixing pins 77, 78 bored through the side plates 58a, 58b of the set holder 34.

Therefore, the pair of pivot support arms 6 on one side act by the tension spring 90 described above.
3, 64 is the rotational force of the rotation arm 9.
The same effect is applied to the pair of rotational support arms 65 and 66 on the other side via 3 and 94. As a result, the upward moving force on the cassette holder 34 by the tension spring 90 and the downward pressing force on the cassette holder 34 by the slider, which will be described later, are applied to the left and right side plates 58a, 58b.
This ensures that the cassette holder 34 is not distorted or tilted when the cassette holder 34 is moved vertically.

The above-mentioned cassette holding device 36 has a tension spring attached to the inner surface of the side plate 42 on the other side of the sliding frame 33 constituting the holding device 36 (the side on which the protrusion 62 of the cassette holder 34 is provided). A slider 97 is attached to the slide frame 33 to move it downward against the tensile force of the slider 90 . This slider 97 is formed as a long plate-like body, and a pressed piece 98 is provided on the rear end side.
is formed by bending, and a pair of slide guide holes 99, 99 are bored. In the slider 97, a guide pin 100 drilled from the other side plate 42 of the sliding frame 33 is slidably engaged with one slide guide hole 99 on the rear side, and the other slide guide hole 99 is engaged with the moving pin 74 so as to be movable in the front and back direction, and when the cassette holder 34 has reached the above-mentioned raised position,
Due to the backward moving force applied to the moving pin 74, the front end portions of the slide guide holes 99, 99 are held in contact with the moving pin 84 and the guide pin 100.

The slider 97 is attached to the magnetic tape 5 in the tape cassette 1 attached via the chassis 37.
The tape is slid by an operation plate 103 that is engaged with a gear mechanism 102 that is rotatably driven by a loading drive motor 101 that drives and operates a tape loading mechanism that pulls out the tape into a predetermined tape running path. Be manipulated. The operation plate 103 is formed as an elongated plate-like body, and a pair of guide elongated holes 104, 104 having a longer diameter in the longitudinal direction are bored at both front and rear ends. Then, on one side of the operation panel 103,
A rack gear 105 that meshes with the gear 102a constituting the gear mechanism 102 is formed, and on the other side facing the rack gear 105, an arm portion 106 integrally protrudes with a pressing protrusion 107 for pressing the slider 97. is provided. The operation plate 103 is attached so as to be movable in the front-rear direction by inserting and engaging a pair of guide pins 108, 108 set up on the base of the chassis 37 through guide elongated holes 104, 104.

In addition, in the state before the operation plate 103 and the sliding frame 33 reach the retracted position, the guide elongated hole 104,
When the sliding frame 33 reaches the retracted position while being held at the retracted position where the front end of the sliding frame 104 comes into contact with the guide pins 108, 108, the rack gear 105 engages the loading drive motor 101.
It is operated to move forward by a gear mechanism 102 which is rotationally driven by. In addition, the slider 97
When the sliding frame 33 reaches the retracted position, the pressed piece 98 approaches and opposes the pressing protrusion 107 of the operation plate 103, as shown in FIG.

Therefore, when the sliding frame 33 reaches the retracted position, the operation plate 103 is moved forward, the pressing protrusion 107 presses the pressed piece 98 of the slider 97 from behind, and the slider 97 is moved forward, As a result, the moving pin 74 with which the front end of the slider 97 is engaged is moved forward. The pair of left and right rotational support arms 63, 64 and 65, 66 of the cassette holder 34 are arranged in a direction that reduces the mutual opening angle of the outer rotational support arms 63, 65 and the inner rotational support arms 64, 66. , and the cassette holder 34 is moved downward with respect to the sliding frame 33 against the tensile force of the tension spring 90.

Then, the slider 97 is prevented from moving forward as the rear end edge of the slide guide hole 99 comes into contact with the guide pin 100, and in this state, the cassette holder 34
is lowered to the tape cassette installation completion position where the engaging shaft portion of the reel shaft protrudes upward from the bottom plate 58 through the reel shaft insertion holes 59 formed in the bottom plate 58 of the cassette holder 34. will be done.

Note that when the operation plate 103 is moved from the tape cassette loading completion position of the cassette holder 34 to the retracted position, the forward pressing force of the slider 97 against the moving pin 74 is released, so that the cassette holder 34 is moved toward the raised position by the tensile force of the tension spring 90.

As described above, the sliding frame 33 to which the cassette holder 34 is vertically movably attached has a
A holder frame 35 is attached so as to cover the front part of 3. This holder frame 35 includes a front frame portion 109 formed to have approximately the same size as the outlet formed in the housing 31, side frame portions 110 provided perpendicularly to both ends of this front frame portion 109, 110.

Further, a bottom plate 111 guide is provided in a portion of the holder frame 35 along the front frame portion 109, and a top plate 112 is provided on the upper surface of the rear end side of the side frame portions 110, 110 between these side frame portions 110, 110. is provided. Holder frame 35 configured in this way
The bottom plate 111 is the front plate 43 of the sliding frame 33.
The top plate 112 is arranged above with a slight gap therebetween, and both left and right ends of the top plate 112 are connected to the sliding frame 3.
It is fixed to the sliding frame 33 while being positioned in front of the support pieces 113, 113 which are bent at the angle of 3.

When the holder frame 35 is attached to the sliding frame 33, as shown in FIG. Front part, rotation support arms 63, 64, 65, 6
6 etc. are located inside the holder frame 35 and covered. Further, when the cassette holder 34 is in the raised position, the bottom plate 111 of the holder frame 35 is located on the same plane as the bottom plate 58 of the cassette holder 34, and is also located in front of and close to the bottom plate 58. Ru.

Then, when the cassette holder 34 is in the raised position, the bottom plate 5 of the cassette holder 34 is
8, the bottom plate 111 of the holder frame 35, and the side frame plate 11
The cassette holding section 40 is constituted by the inner surfaces of the cassettes 0 and 110 and the inner surface of the front frame section 109. When the sliding frame 33 reaches the position where it is pulled out of the housing 31, the cassette holding portion 40 holds the housing 3.
The tape cassette 1 is positioned so as to protrude outside the casing 31 from the outlet 32 of the tape cassette 1, and the tape cassette 1 is mounted and taken out.

That is, in a state where the cassette holding part 40 is pulled out to the outside of the housing 31, the tape cassette 1 is held in such a direction that its front cover 9 faces inward of the housing 31, and the cassette case 2 is placed in the holder frame 35.
The tape cassette 1 is inserted diagonally from above so that it is positioned between the left and right side frame parts 110, 110 of the tape cassette 1, and is lightly pressed from above.
The cassette is attached to the cassette holding portion 40 as shown by the two-dot chain line in FIG.

The position of the tape cassette 1 thus mounted on the cassette holder 40 is such that it is temporarily attached to the cassette holder 40.

By the way, as shown in FIG. 2, on the inner side of the top plate 112 of the holder frame 35, which together with the cassette holder 34 constitute the cassette holding section 40, there are a pair of pressing protrusions 114 for pressing the top surface of the tape cassette 1. 115 is formed protrudingly. These pressing protrusions 114 and 115 are connected to the holder frame 35.
The pressing protrusions 114 are provided at symmetrical positions with the cassette holder 34 as shown in FIG. That is, one of the pressing protrusions 114 is provided at a position located between the protrusion 62 and one side plate 58b of the cassette holder 34, when the tape cassette 1 is inserted onto the cassette holder 34. It is provided so as to be able to press the vicinity of the upper surface of the tape cassette 1 corresponding to the locking piece 23.

In the state where the tape cassette 1 is installed in the temporary installation position as described above, the sliding plate 10 provided on the tape cassette 1 has protrusions 15 on its front edge that touch the bottom plate 58 of the cassette holder 34. The sliding plate regulating protrusion 61 formed in the slide plate 61 is abutted from the front side, and the insertion hole 20,
20 is positioned coaxially with the through holes 59, 59 formed in the bottom plate 58 of the cassette holder 34 for passing the reel shaft. In this state, the pressing protrusions 114 and 115 press against the front end of the upper surface of the cassette case 2 as described above.

G-3b Locking mechanism of sliding frame The cassette mounting device according to the present invention includes:
A locking mechanism is provided to lock the sliding frame 33 constituting the cassette holding device 36 when it reaches the retracted position corresponding to the mounting position of the tape cassette 1. This lock mechanism consists of a lock pin 116 provided at the rear end of the other side plate 42 of the sliding frame 33 and a lock lever 1 provided on the chassis 37 with which this lock pin 116 engages.
It consists of 17. The lock pin 116 is installed so as to hang from the tip of a projection 118 that projects inward from the rear end of the other side plate 42 of the sliding frame 33. On the other hand, lock lever 117
is rotatably supported via a support shaft 119 mounted on the chassis 37, and is urged to rotate in the direction of arrow A in FIG. 1 by a torsion coil spring 120 fitted to this support shaft 119. In addition, lock lever 11
The rotation biasing position 7 is the torsion coil spring 120.
A portion of the proximal end thereof is regulated by abutting on a locking piece 121 formed by cutting and raising a portion of the chassis 37 to which one end is locked. And the above lock lever 1
At the tip of 17, there is a lock part 122 consisting of a notch.
is formed, and an inclined piece 123 is integrally formed so as to face this lock portion 122, and this inclined piece 123 constitutes a push-push type locking mechanism.

G-3c Cassette case moving operation means In addition, on the lower surface side of the front plate 43 of the sliding frame 33, the sliding frame 33 is moved from the position where the sliding frame 33 is pulled out to the outside of the housing 31 via the lever support pin 125. In the process of moving to the retracted position inside the body 31, the cassette case 2 of the tape cassette 1 attached to the cassette holder 40 is pressed backward, and by this pressing operation, the tape cassette is A cassette push lever 126 and a cassette push auxiliary lever 127, which constitute a cassette case moving operation means for relatively moving the sliding plate 10 of 1 to the open position, are rotatably mounted so as to be overlapped with each other. There is. A cassette pushing pin 1 is attached to one end of the cassette pushing lever 126.
28 is erected, and at one end of the cassette pushing assist lever 127 is an abutment plate pressing pin 129 that presses an abutment plate, which will be described later, which is attached to the base board to which the chassis 37 is attached. It is planted in a drooping manner.
The cassette pushing lever 126 is
A push lever return spring 132 stretched between a spring locking piece 130 provided on a part of the front plate 43 of the sliding frame 33 and a spring locking piece 131 protruding from one side of the other end of the cassette push lever 126. As a result, the cassette pressing pin 128 is urged to rotate in a direction in which it escapes from the cassette holding portion 40. Further, a spring locking piece 133 protruding from the other end of the cassette push lever 126 and a spring locking piece 134 protruding from the other end of the cassette push assist lever 127
A limiter spring 135 is stretched between them, and the abutment plate pressing pin 129 at one end of the cassette push-in assisting lever 127 is biased to rotate toward the abutment plate side, which is inward of the cassette holding portion 40. The cassette push-in assisting lever 127 is engaged with a rotation restriction piece 136 bent at one side of the cassette push-in lever 126, so that the rotation biased position by the limiter spring 135 is restricted.

By tensioning the limiter spring 135 between the cassette push lever 126 and the cassette push assist lever 127 as described above, the cassette push lever 126 and the cassette push assist lever 127 can be moved when the abutment plate press pin 129 is pressed. They are rotated as one unit against the biasing force of the return spring 132.

Note that the cassette pushing pin 128 provided at one end of the cassette pushing lever 126 is connected to the holder frame 3.
From the front frame portion 109 of No. 5 to the bottom plate 1 of this front frame portion 109
11, and a notch 110a formed in the bottom plate 58 of the cassette holder 34, which protrudes upward through the notch 111a formed in the bottom plate 58 of the cassette holder 34. The abutment plate pressing pin 129 is positioned so as to face a midway portion of the abutment plate provided on the base substrate, which will be described later.

On the front end side facing the drawer opening 32 of the base board to which the chassis 37 is attached, an abutting plate pressing pin 129 of the cassette pushing auxiliary lever 127 is provided.
An abutment plate 138 is attached to which the abutting plate 138 comes into contact. This abutment plate 138 is rotatably attached to the base plate 138 via a pivot pin 139 that is set on the base substrate at the base end bent in a U-shape. The locking piece 143 at the tip is rotated to the outside of the cassette holding part 40 by the abutting plate return spring 142 stretched between the tip of the folding piece 140 and the spring locking piece 141 formed by cutting and raising the base board. Forced. The rotationally biased position of the abutting plate return spring 142 is regulated by a first rotation regulating piece 144 protruding from the base board, and the abutting plate 138 is positioned approximately parallel to the front edge of the base board. It is maintained as follows. Further, the abutting plate is placed on the base board against the pressing force of the abutment plate pressing pin 129 provided on the cassette push-in auxiliary lever 127 that moves as the sliding frame 33 moves into the housing 31. Board 1
A lock arm 145 is attached to keep the lock 38 locked. This lock arm 145 is formed in an L-shape, and its bent portion is rotatably attached via a pivot pin 146 set on the base substrate, and has one end attached to the lock piece 14 of the abutting plate 138.
A lock pin 147 that engages with one side of 3 is planted. In the lock arm 145, a lock arm return spring 148 is stretched between the distal end side where the lock pin 147 is erected and the spring locking piece 141, so that the lock pin 147 moves toward the lock piece 143 side of the abutting plate 138. It is mounted so that it is biased to rotate. In addition, the lock arm 14
5 to unlock the abutment plate 138, as the sliding frame 33 moves inward of the housing 31, the lock arm 145 is released by the lock release pin 149 set on the lower surface of the front plate 43 of the sliding frame 33. This is done by pressing the pressed portion 145a at the other end and rotating the lock arm 145 against the biasing force of the lock arm return spring 148. Then, when the lock arm 145 releases the lock, the abutting plate 138 moves against the housing 3 of the sliding frame 33.
The abutting plate pressing pin 129 provided on the cassette pushing auxiliary lever 127, which moves as the cassette is moved inward, rotates against the biasing force of the abutting plate return spring 142. The rotation position of the abutment plate 138 by this abutment plate pressing pin 129 is as follows:
The rotation is restricted by a second rotation restriction piece 150 protruding from the base substrate.

As described above, the cassette pushing lever 126 is configured such that the cassette pushing pin 128 provided at one end of the cassette pushing lever return spring 132 is rotatably biased outward of the cassette holding part 40. The abutting plate pressing pin 129 provided at one end abuts the abutting plate 138 and is not rotated against the biasing force of the pushing lever return spring 132 as the sliding frame 33 moves inward to the housing 31. As shown in FIG.
It is held in a standby position where it comes into contact with the front end surface of the notch 111a formed in 9.

Here, when the sliding frame 33 is moved from the position where it is pulled out of the housing 31 to the position where it is pulled inward of the housing 31 and reaches a predetermined position, as shown in FIG. Then, the abutting plate pressing pin 129 provided at one end of the cassette pushing assist lever 127, which is integrated with the cassette pushing lever 126 by the limiter spring 135, comes into contact with the abutting plate 138. From this state, the sliding frame 33 continues to move towards the housing 3.
1, the abutting plate pressing pin 139 is pressed by the abutting plate 138, and the cassette pushing lever 126 is pressed by the abutting plate 138.
The cassette pushing assist lever 127 is rotated against the biasing force of the pushing lever return spring 132 so that the cassette pushing pin 128 moves inward of the cassette holding part 40, and the cassette pushing assist lever 127 is mounted inside the cassette holding part 40. The cassette case 2 of the tape cassette 1 is pressed to move the cassette case 2 inward of the cassette holding section 40. At this time, the sliding plate 10 of the tape cassette 1 has protrusions 15, 15 provided on the front edge that are attached to the cassette holder 34.
Since the movement of the cassette case 2 is restricted by coming into contact with the sliding regulating protrusions 61, 61 provided on the bottom plate 52 of the cassette case 2,
only the cassette holder 40 is moved inward.

Then, as shown in FIG. 4, the cassette case 2 is arranged so that the insertion holes 8, 8 for inserting the reel shaft provided in the cassette case 2 and the insertion holes 20, 20 of the sliding plate 10 correspond to each other. After the sliding frame 33 is moved inside the cassette holder 40 until the plate 10 reaches the open position, the rotation of the cassette pushing lever 126 is restricted. Ru. That is, limiter spring 1
35 expands in accordance with the amount of movement of the sliding frame 33, and only the cassette push assist lever 127 rotates inward of the casing 31, and the load from the cassette push pin 128 is transferred to the cassette case 2.
be regulated so as not to participate in

When the sliding frame 33 is further moved inward of the housing 31 from the state where the rotation of the cassette pushing lever 126 is restricted by the action of the limiter spring 135, as shown in FIG. From the state in which the lock release pin 149 installed on the front plate 43 of the lock arm 145 is in contact with the pressed portion 145a of the lock arm 145,
5a to rotate the lock arm 145 against the urging force of the lock arm return spring 148. As shown in FIG.
At the same time, release the lock of 8 and release the abutment plate pressing pin 129 of the cassette push-in auxiliary lever 127.
This causes the abutment plate 138 to return to the abutment plate return spring 142.
The cassette holder 40 is rotated inwardly against the urging force of the cassette holder 40 . Since the abutment plate 138 is moved inward of the cassette holding part 40 in this state,
The cassette push lever 126 pushes the cassette case 2 under the biasing force of the push lever return spring 132.
is rotated in a direction away from the rear end surface of the In this state, the pressing of the cassette case 2 by the cassette pushing lever 126 is completed.

Therefore, the cassette case 2 of the tape cassette 1 mounted on the cassette holding part 40 is moved by the sliding frame 33.
While the tape cassette is being moved from the pulled out position outside the casing 31 to the position corresponding to the tape cassette mounting position pulled inward of the casing 31, the cassette pushing pin 128 of the cassette pushing lever 126 is being moved. The reel shaft is moved relative to the sliding plate 10 to open the insertion holes 8, 8 for inserting the reel shaft. Then, the tape cassette 1 is in a state where the insertion holes 8, 8 for inserting the reel shaft are open,
The insertion holes 8, 8 and the insertion holes 59, 59 provided in the bottom plate 58 of the cassette holder 34 are located coaxially, so that the cassette holder 34 is installed in the normal installation position.

Then, when the tape cassette 1 is moved to the normal mounting position, the pressing protrusions 124 and 125 maintain a state in which they press the middle part of both left and right ends of the upper surface of the cassette case 2 from above, so that the tape can be removed. The state in which the cassette 1 has reached its normal mounting position is stably maintained.

G-3d Cassette case ejection lever Furthermore, on the crosspiece 44 located on the inner side of the housing 31 of the sliding frame 33, the housing 31 is removed from the position where the sliding frame 33 is pulled inward of the housing 31. A cassette case ejection lever 1 that presses the cassette case 2 of the tape cassette 1 to move the tape cassette 1 to the temporary mounting position when the tape cassette 1 is pulled out to the outside.
51 is rotatably attached via a lever support pin 152, as shown in FIGS. 1 and 2. The cassette case ejection lever 151 has a cassette pressing pin 153 hanging from one end thereof, and a spring hook 154 protruding from the lever 151 and a spring hook 154 protruding from the rear end side of one side plate 41 of the sliding frame 33. The tension spring 156 tensioned between the provided spring hanging pieces 155 rotates in the counterclockwise direction in the figure, and unless a counterclockwise pressing force is applied, one end will rotate as shown in FIG. The cassette pressing pin 153 is formed in the cutout 44a in the crosspiece 44.
It is held in a standby position where it abuts the rear edge of the.

Therefore, when the cassette case ejection lever 151 is in the standby position, the cassette pressing pin 153 at one end is located close to the front surface of the cassette case 2 of the tape cassette 1 in the normal mounting position from the inside of the housing 31. will be done.

The other end of the cassette case ejection lever 151 is positioned so as to face one of the guide shaft support pieces 54 provided on the chassis 37 from inside the casing 31, and this other end is located opposite to one of the guide shaft support pieces 54 provided on the chassis 37. 5
4, the guide shaft support piece 54
The cassette holding part 40 is rotated inwardly by being pressed relatively backward by the cassette holding part 40.

Therefore, the cassette case ejection lever 151 is
When the sliding frame 33 is in a position where it is retracted into the housing 31, it is in a standby state.

Therefore, the cassette case ejection lever 151 is
When the sliding frame 33 is moved toward the outside of the housing 31 from the position where it is pulled inward to the housing 31,
From the predetermined position, it is rotated inwardly of the cassette holder 40 against the tensile force of the tension spring 156.

Therefore, the cassette case 2 of the tape cassette 1 held in the open position of the sliding plate 10 in the cassette holding part 40 is moved from the position where the sliding frame 33 is pulled into the housing 31 to the outside of the housing 31. While the front cover 9 is being moved to the pulled-out position, the cassette pressing pin 15 of the cassette case ejection lever 151
3 will be pressed from behind.

Then, while the sliding frame 33 is moved from the retracted position within the housing 31 to the position where it is pulled out to the outside of the housing 31, the tape cassette 1 is moved so that only its cassette case 2 is moved forward within the cassette holder 40. It will be moved to the temporary mounting position. As a result, the sliding plate 10 is moved rearward relative to the cassette case 2.

G-4 Tape cassette mounting operation (FIGS. 1, 3, 5, 8, and 9) Next, the mounting operation of the tape cassette 1 using the above-mentioned cassette mounting device will be described.

First, the cassette holding section 40 of the cassette loading device
To place the tape cassette 1 on the tape cassette 1, the cassette holding device 36 including the sliding frame 33 is pulled out of the housing 31 as shown in FIG. 31 so that the tape cassette 1 can be attached. When the cassette holder 40 is in a state where the tape cassette 1 can be attached, the cassette holder 34 is urged to move to the raised position by the tension spring 90, as described above.

At this point, attach the tape cassette 1 to the cassette holder 40.
To attach the cassette holder, place the front cover 9 on the bottom plate 58 of the cassette holder 34 so that the front cover 9 side is inserted between the bottom plate 58 of the cassette holder 34 and the pressing protrusions 114 and 115.

The tape cassette 1 mounted on the cassette holder 40 in this way is placed in the temporary mounting position by inserting the front side portion with the front cover 9 attached onto the cassette holder 34.
The sliding plate 10 of the tape cassette 1 is held in such a way that it is held between the bottom plate 52 and the pressing protrusions 114 and 115. It is positioned so as to come into contact with the sliding plate regulating protrusions 58, 58 from the front. In this state, the insertion holes 20, 20 of the sliding plate 10 are positioned coaxially with the insertion holes 59, 59 formed in the bottom plate 58 of the cassette holder 34, and the tape cassette 1 is attached to the cassette holding part 40. In the process of being removed, the protrusion 62 formed on the bottom plate 58 of the cassette holder 34
is relatively inserted into the shallow groove 22 formed in the bottom plate portion 11 of the sliding plate 10, and moves rearward within the shallow groove 22. and,
When the tape cassette 1 is installed in the temporary device position, the protrusion 62 reaches the depth of the shallow groove 22. Then, as the protrusion 62 moves deeper inside the shallow groove 22, the engagement protrusion 24 provided on the lower surface of the tip of the locking piece 23 provided on the lower half 4 of the cassette case 2 engages with the protrusion. The lock piece 23 is pushed upward along the front inclined surface of the portion 62, and the lock piece 23 is pushed upward while being bent.

In addition, at this time, the sliding plate regulating protrusions 61, 61 provided on the cassette holder 34 are attached to the tape cassette 1.
Notches 9a, 9a formed in the lower edge of the front cover 9 of
The protrusions 15, 15 of the sliding plate 10 are brought into contact with the protrusions 15, 15 of the sliding plate 10 to regulate the position of the sliding plate 10.

After the tape cassette 1 is mounted on the cassette holding section 40 as described above, the cassette holding device 36 including the sliding frame 33 is moved to the slide guide shafts 38, 3.
9 and push it into the housing 31 by manual operation.

Then, when the sliding frame 33 is pushed inward into the housing 31, the abutting plate pressing pin 129 at one end of the cassette pushing assisting lever 127 is pushed into position as shown in FIG. Backing plate 1
38 and is pressed, the cassette push lever 126 is rotated, and the cassette push pin 12 at one end of the cassette push lever 126 is rotated.
8 to tape cassette 1 and cassette case 2
is moved inward of the housing 31.

Then, when the cassette case 2 is moved inward of the housing 31, the sliding plate regulating protrusions 61, 61 on the side of the cassette holder 34 move the cassette case 2 toward the inside.
Since the sliding plate 10 is moved toward the front of the housing 31 relative to the sliding frame 33, the sliding plate 10 is moved relatively backward against the biasing force of the torsion spring 18, that is, moved toward the front of the sliding frame 33. As a result, the engagement protrusion 24 of the lock piece 23 engages with the engagement hole 2 of the sliding plate 10.
It will be pushed upward from 6. As a result, the locking of the sliding plate 10 by the locking piece 23 is released.

When the tape cassette 1 is moved to the normal mounting position, the sliding plate 10 is in the open position, that is, the insertion holes 20 are positioned below the cassette case 2, as shown in FIGS. 4 and 8. It is located coaxially with the insertion holes 8, 8 formed in the half 4 for inserting the reel shaft. Furthermore, when the sliding plate 10 reaches the open position, the engaging protrusion 24 of the locking piece 23 engages with the shallow groove 2.
The sliding plate 10 is thereby locked in the open position.

Note that before the cassette push lever 126 starts pressing the cassette case 2, the cassette case ejection lever 151 is returned from the pressing completion position to the standby position.

By the way, in the device of the present invention, the sliding plate 10
Even after the sliding frame 33 is locked in the open position, the sliding frame 33 is moved inward of the housing 31. That is, the cassette pushing lever 126 can push the cassette case 2 further than the position where the sliding plate 10 is locked in the open position, thereby solving the problem of insufficient movement of the cassette case 2 caused by dimensional errors of the tape cassette 1. The above sliding plate 10
It is configured to ensure reliable opening operation.

Note that even if the cassette push lever 126 is operated to push the cassette case 2 further beyond the position where the sliding plate 10 is locked in the open position, the cassette push lever 12
As mentioned above, the auxiliary lever 1 for pushing the cassette is restricted from rotating while in contact with the cassette case 2 by the action of the limiter spring 135.
27 is rotated, and the pressing force that presses the cassette case 2 is absorbed by the limiter spring 135. Therefore, unnecessary loads can be prevented from being applied to the cassette case 2, and the cassette case 2 can be protected.

Then, the cassette push-in assisting lever 12
When only the lock arm 7 is rotated, the lock arm 14 is released by the lock release pin 149 as described above.
5 is performed, the abutting plate 138 is unlocked, and the cassette push-in assisting lever 127 is also rotated inward of the cassette holding portion 40, so that the cassette push-in lever 126 is pushed into the cassette. The cassette pressing pin 129 rotates in a direction away from the rear end surface of the case 2, and the cassette pressing pin 129 separates from the cassette case 2.

Further, when the sliding frame 33 reaches the vicinity of the retracted position inward of the housing 31 corresponding to the mounting position of the tape cassette 1, which positions the sliding plate 10 of the tape cassette 1 in the open position, the slide guide shafts 38, 39 While compressing the coil springs 55 and 56 fitted to the rear end side, the housing 31 is further pressed and moved inward.
Then, the tape cassette 1 is moved so that the limiter spring 135 of the cassette case moving operation means is extended, as shown in FIGS.
After the sliding plate 10 reaches the open position, when the sliding frame 33 is further pressed inward of the housing 31, the lock pin 116 provided on the rear end side of the sliding frame 33 locks the lock lever. 117 is rotated while being pressed against the biasing force of the torsion coil spring 120 to engage the lock portion 122 and lock the sliding frame 33 in the retracted position. At this time, the sliding frame 33 receives the biasing force of the coil springs 55 and 56 and returns slightly to the front of the housing 31, and as shown in FIG.
In the locked state, the sliding plate 10 of the tape cassette 1 is held at a retracted position inside the casing 31 corresponding to the mounting position of the tape cassette 1 which is in the open position.

When the sliding frame 33 is locked to the lock lever 117 in this way, the drive motor 10
1 to move the operation plate 103, and the operation plate 103 is moved to the front of the housing 31.

When the operation plate 103 is moved forward, the pressing protrusion 107 presses the slider 97 forward, so that the cassette holder 34 resists the tension of the tension spring 90 and moves forward. As shown, the tape cassette is moved downward to the tape cassette installation completion position. Therefore, the tape cassette 1 is lowered toward the base board, and the cassette positioning pins 157, 157 provided on the base board fit into the positioning holes formed at the front end of the lower half 4 of the cassette case 2. While being inserted, the front cover 9
However, a lid opening member (not shown) opens the space 16.
The reel drive shaft is moved to the opening position, and the reel drive shaft is engaged with the reel hubs 6 and 7 through the insertion holes 8 and 8 of the cassette case 2.

Then, the tape cassette 1 is mounted in a predetermined position on the tape recorder in a predetermined state.

G-5 Tape cassette removal operation (FIGS. 1, 3 to 5) Next, the operation for removing the tape cassette 1 installed at the cassette installation position in the tape recorder will be explained.

First, in order to take out the tape cassette 1, the drive motor 101 is driven in the reverse direction.

Then, when the drive motor 101 is driven in the reverse direction, only the operation plate 103 is operated via the gear mechanism 102, and this operation plate 103 is moved backward, that is, toward the standby position. Become. As a result, the cassette holder 34 is moved to the raised position by the tensile force of the tension spring 90, as described above. When the cassette holder 34 is moved back to the raised position, the driving motor 101 is stopped.

Here, the sliding frame 33 is connected to the slide guide shaft 38,
When the lock pin 116 is pressed inward against the biasing force of the coil springs 55 and 56 fitted in the lock lever 117, the lock pin 116 moves within the lock portion 122 of the lock lever 117, and the lock lever 117 is torsioned by the action of the coil spring 120. Then it will rotate slightly. When the lock lever 117 is rotated in this manner, the lock pin 116 enters under the inclined piece 123 of the lock lever 117 and is disengaged from the lock portion 122. When the lock pin 11 is disengaged from the lock lever 117 in this manner, the sliding frame 33 is biased toward the outside of the housing 31 by the biasing force of the coil springs 55 and 56 provided on the slide guide shafts 38 and 39. will be moved.

Then, when the sliding frame 33 is further moved toward the outside of the housing 31, the cassette pushing lever 116 and the cassette pushing assisting lever 12
7 is rotated back to the return position by the push lever return spring 132, and the cassette push pin 128 at one end of the cassette push lever 126 is separated from the cassette case 2, as shown in FIG.

Further, as the sliding frame 33 is moved toward the outside of the casing 31, the cassette case ejection lever 151 is rotated inward of the cassette holding part 40, and the cassette case 2 is removed from the casing 31. Press outward, forward. Then, as the cassette case 2 is moved forward of the cassette holding part 40, the engagement protrusion 24 of the lock piece 23 is moved relatively diagonally by the protrusion 62 formed on the bottom plate 58 of the cassette holder 34. Since it is pushed upward, the lock piece 23 is pushed upward while being bent. As a result, the engagement protrusion 24 is separated from the engagement notch 25.
That is, the locking of the sliding plate 10 in the open position by the locking piece 23 is released.

The sliding frame 33 is attached to the housing 31 shown in FIG.
When the tape cassette 1 reaches the outwardly pulled position, the tape cassette 1 is returned to the temporary mounting position, and the sliding plate 10 is moved to the closed position, that is, the insertion holes 8, 8 for inserting the reel shaft on the cassette case 2 side. It is returned to the position where it is blocked. Moreover, when the sliding plate 10 is returned to the closed position,
The engagement protrusion 24 of the lock piece 23 corresponds to the engagement hole 26 of the shallow groove 22, so that it is engaged therewith.

Therefore, the tape cassette 1 is pulled out of the housing 31 with the sliding plate 10 in the closed position.

In addition, when the sliding frame 33 is pulled out to the outside of the housing 31, the sliding frame 33 can be grasped by hand and pulled out when the sliding frame 33 is partially pulled out.

By the way, in order to operate the cassette holding device 36 including the sliding frame 33 with respect to the housing 31, an operation lever is provided protruding from a part of the slide guide blocks 47, 48, and the operation is performed using this operation lever. You can also do this.

The biasing means for elastically returning the sliding frame 33 is a tension spring tensioned between the slide guide blocks 47, 48 and the chassis 37 instead of the coil springs 55, 56 described above. You can.

H Effect of the invention As mentioned above, the present invention allows the tape cassette held by the cassette holder to be attached to the tape cassette inside the casing by manually pushing the sliding frame to which the cassette holder is attached into the casing. While the tape cassette is moved to the position and the sliding frame is locked, the cassette case of the tape cassette is moved by the cassette case moving operation means in the process of moving the sliding frame inward to the housing, and the sliding plate is moved relative to the tape cassette. The limiter mechanism of the tape cassette moving operation means functions after the sliding plate reaches a position where the insertion hole for the reel shaft is relatively opened. Since the sliding frame is moved inward within the housing, the tape cassette can be inserted into and removed from the tape cassette outside the housing by manual operation without using a driving means such as a drive motor for tape loading. It enables the reel shaft to be inserted between the available position and the tape cassette installation position inside the housing, while also absorbing dimensional errors of the tape cassette and ensuring that the reel shaft is inserted without putting unnecessary load on the cassette case. The insertion hole can be opened, and unnecessary pressing of the cassette case caused by installation errors of the cassette case moving operation means can be prevented, and the insertion hole can be opened reliably, and the tape cassette can be protected. It is possible to provide a tape cassette mounting device that can be used.

[Brief explanation of the drawing]

Fig. 1 shows a cassette loading device according to the present invention, and is a plan view of the cassette holding device in a state where it is pulled out to the outside of the casing, Fig. 2 is an exploded perspective view showing the cassette holding device, and Fig. 3 is a plan view of the cassette holding device in a state where it is pulled out. FIG. 4 is a plan view of the cassette holding device pulled into the housing to a predetermined position, and FIG. 4 is a plan view of the tape cassette sliding plate in the open position. FIG. 5 is a plan view of the cassette holding device pulled into the housing and locked by the locking mechanism. Fig. 6 is a perspective view of the tape cassette used in the present invention when not in use, Fig. 7 is a perspective view from the bottom side thereof, and Fig. 8 is a perspective view from the bottom side when in use. , FIG. 9 is a bottom view when not in use. 1... Tape cassette, 2... Cassette case, 5... Magnetic tape, 6, 7... Tape reel, 8... Insertion hole for reel shaft insertion, 10... Sliding plate, 31... Tape recorder body 33...Sliding frame, 34...Cassette holder, 38, 39...Slide guide shaft, 55, 5
6...Coil spring, 116...Lock pin, 11
7...Lock lever, 126...Cassette push lever, 127...Cassette push assist lever, 135...Limiter spring, 138...Abutment plate, 145...Lock arm.

Claims (1)

[Claims for Utility Model Registration] The above-mentioned utility model is movably attached to the bottom side of a cassette case that houses a pair of tape reels wound with magnetic tape, and when not in use, the above-mentioned tape reel formed on the bottom of the cassette case is installed. A tape cassette equipped with a sliding plate that is positioned to close the insertion hole for the reel shaft that engages the tape reel and is moved to a position that opens the insertion hole when in use is inserted into the tape cassette on the outside of the casing. In a tape cassette mounting device that carries out a transfer operation between a removable position and a tape cassette mounting position inside a housing, a cassette holder is provided with a locking means for holding the tape cassette and locking the sliding plate. A sliding frame is mounted so as to be movable up and down, and is supported by a pair of slide guide shafts provided in the housing to be movable in and out of the housing, and the sliding frame reaches the tape cassette installation position. a locking mechanism that locks the sliding frame when the tape cassette is inserted into the housing and releases the lock when the tape cassette is moved further inward from the tape cassette mounting position; When being moved inward into the casing, it comes into contact with a rotating operating means provided on the casing side, and after contacting the rotating operating means, it is rotated by the operation of moving the sliding frame inward into the casing. and press the cassette case to move the cassette case with respect to the sliding plate that is locked by the locking means, thereby moving the sliding plate relatively to a position where the insertion hole for inserting the reel shaft is opened. and a tape cassette moving operation means having a limiter mechanism that functions when the sliding frame is moved inward into the housing after the sliding plate reaches a position where the insertion hole for inserting the reel shaft is opened. Tape cassette mounting device.