JP2537063B2 - Cassette loading device - Google Patents

Description

Description: BACKGROUND OF THE INVENTION [Industrial field of use] The present invention stores a tape-shaped recording medium, and mounts a cassette having a recess on the pull-out surface side of the stored recording in a fixed position. It relates to the device.

[Prior Art] FIG. 6 is a perspective view showing a conventional cassette mounting apparatus for a cassette used in a magnetic recording / reproducing apparatus (hereinafter referred to as VTR), particularly a small machine such as an 8 _mm VTR. [FIG. 3] is a schematic plan view for explaining a tape cassette which is a target of the related art and the present invention.

In FIG. 6, 1 is an inner holder into which a cassette 6 to be described later is inserted, and 2 is an outer holder that rotates the inner holder 1 and locks and holds the inner holder 1. 3a, 3b
Is a rotation fulcrum of the inner holder 1, and 4a and 4b are rotation fulcrums of the outer holder 2. A leaf spring 5 is attached to the outer holder 2 and presses the upper surface of the inner holder 1.

The outer holder 2 is rotatably supported by a supporting plate (not shown) protruding from a fixed chassis (not shown) via turning fulcrums 4a, 4b. The inner holder 1 is slidably inserted in the outer holder 2 and a supporting plate (not shown in the figure is rotatable) provided on a slide chassis (not shown) slidably arranged on a fixed chassis. It is rotatably supported via rotation fulcrums 3a and 3b.

When the slide chassis is pulled to the opposite side with respect to the drum 7, the rotation fulcrums 3a, 3b and 4a, 4b are located on the same axis, and the inner holder 1 and the outer holder 2 can be integrally rotated. Is in a state. Also, the slide chassis is the drum 7.
When pushed to the side, the support plates supporting the rotation fulcrums 3a and 3b move together, and the inner holder 1 moves inside the outer holder 2 into the drum 7
Move to the side.

As shown in FIG. 7, the cassette 6 has a recess 8 on the tape pull-out surface side, and the drum 7 is positioned so as to bite into the recess 8 when loading is completed. When the tape 9 is loaded, the post and capstan 32 (not shown) move to the drum side to pull out the tape 9 and wind it around the drum 7.

In FIG. 6, when the cassette 6 for storing the tape shown in FIG. 7 is attached to the holder, the slide chassis is pulled out, and the inner holder 1 and the outer holder 2 are rotated so that the cassette insertion opening faces upward. To move. The cassette 6 is inserted into the inner holder 1 as it is from the tape pull-out surface side. Next, after returning the holder to the horizontal position (position parallel to the slide chassis), set the slide chassis to the drum 7
To move the inner holder 1 into the outer holder 2,
The cassette 6 is moved until the drum 7 is positioned as shown in FIG. At this time, the rotation fulcrums 3a and 3b are located at positions aside from the drums 4a and 4b by the distance a.

As described above, the cassette is attached to and detached from the holder at a position distant from the drum 7, the cassette is mounted on the cassette mounting portion, and then moved to the drum side. By forming the tape path in the bite state, it is possible to reduce the size of the entire mechanical unit. Therefore, it is suitable for products that require smaller size and lighter weight such as 8 _mmw TR.

[Problems to be Solved by the Invention] In the conventional cassette mounting apparatus as described above, a cassette holder size corresponding to the sum of the cassette depth length and the cassette movement length (inner holder movement length) is required. Therefore, there is a problem that the size of the mechanism is increased. On the other hand, when the rotating arm length is shortened, the size can be reduced, but if the tape is loose when the cassette is mounted, the tape may come into contact with the post or the drum, and the tape may be damaged.

The present invention has been made to solve such a problem, and an object of the present invention is to provide a cassette mounting device capable of reducing the size of the entire mechanism without causing tape damage.

[Means for Solving the Problems] In order to achieve the above-mentioned object, according to the present invention, a cassette containing a tape-shaped recording medium is loaded into a holder portion, and the loading of the cassette is completed from the cassette insertion position. In a cassette mounting device for moving back and forth to a position, a main body for holding a cassette inserted from one end, and a plurality of locking members provided on a side surface of the other end of the main body for locking the main body A rotary arm part having a plurality of guide grooves for slidably coupling the parts, one end of which is rotatably supported by the main chassis, and at least the locking member with a support point of the rotary arm part as a rotation center. A positioning member having an arcuate groove for rotatably locking one of them, and a slide chassis to which the positioning member is attached and which moves the main body in response to a sliding operation thereof are provided. It is a thing.

[Operation] With the above-described configuration, the plurality of locking members protruding from the main body can be moved in the plurality of long grooves provided in the rotating arm, and the cassette can be transported to the set position. Therefore, the main body can be stably slid without the holder having a double structure of the inner holder and the outer holder. Further, since the positioning member having the arcuate groove is provided on the slide chassis and the locking member is fitted into the arcuate groove so that the holder part can be rotated (elevated), the rotation fulcrum is provided on the main body part. The cassette can be attached and detached without using it.

[Embodiment] FIG. 1 is a side view showing an embodiment of the present invention, and FIG. 2 is a side view showing a state in which a cassette is mounted on the cassette mounting device of FIG. The drawing is a plan view corresponding to the state of FIG.

In FIG. 1, a slide chassis with respect to the device body 10
11 is arranged so as to be slidable in the horizontal direction, and a pair of positioning plates 12 as positioning members are projected on the upper surface thereof. A semi-circular guide groove 13 is formed on the positioning plate 12. The device main body 10 is provided with an angle (not shown) at a predetermined distance from the guide groove 13, and a pair of rotating arm portions 15 having a rotation fulcrum 14 as a rotation center are coupled to the angle.

The rotary arm 15 has two through grooves 16 and 17 in its longitudinal direction.
Are provided in parallel with each other, and the main body 2
Coupling pin 18 as a locking member protruding from the side surface of 0,
19 is inserted. Further, a connecting pin 21 as a locking member is provided on the side surface of the main body 20 so as to project therefrom.
21 is fitted in the guide groove 13 and the through groove 17. Coupling pin
18, 19 and the connecting pin 21 are arranged so as to form a substantially triangular shape, whereby the main body portion 20 is attached to the rotary arm portion 15 by three pins on one side, and the main body portion 20 is moved in the direction along the through grooves 16, 17. Even if the movement is possible, the movement in the direction orthogonal to the through grooves 16 and 17 is restricted.

The main body 20 has a space in which the cassette 6 can be fitted,
A cassette cover 22 is provided on top of it. As shown in FIG. 3, the cassette 6 is provided with a supply reel 23 and a take-up reel 24, which give a driving force to these reels in accordance with a mode such as recording, reproducing, fast-forwarding, rewinding, or a predetermined amount. A reel unit 25 for applying tension is arranged above the slide chassis 11. A light emitting unit 26 for optically detecting the tape end is arranged near the reel unit 25.

Further, as shown in FIG. 3, a recording / reproducing apparatus having a cassette loading device is provided with a drum 7 facing the tape drawing surface of the cassette 6, and a tape is drawn from the cassette 6 to the drum 7 Posts 27, 28, 29, 30, 31, 32 for winding around 7 and pinch rollers 33 are arranged in a row. Although these move as shown in FIG. 5 at the time of loading, posts 34, 35, and 36 that do not move are arranged on both sides of the drum 7.

Next, the operation of the above configuration will be described with reference to FIGS.

First, as shown in FIG. 1, the main body portion 20 and the rotary arm portion 15 are rotated counterclockwise so that the cassette insertion opening of the main body portion 20 is directed upward, and the cassette 6 is inserted into the main body portion 20 from the direction of arrow A. Insert. Then, the main body 20 is pushed in the direction of arrow B to bring it to the state shown in FIG. At this time, the engaging positions of the connecting pins 18 and 19 and the through grooves 16 and 17 are immovable, but the connecting pins descend in the guide groove 13 as the main body 20 is pushed. That is, when the connecting pin 21 passes through the guide groove 13, the cassette 6 is accurately positioned with respect to the take-up reel 24 and the supply reel 23. Since the horizontal movement of the connecting pin 21 is restricted by the guide groove 13, the connecting position of the main body portion 20 and the rotating arm portion 15 does not shift. In the state of FIG. 2, the positional relationship of the cassette 6 with respect to the drum 7 is as shown in FIG. 3, the drum 7 is not inserted in the concave portion 8 of FIG. 6, and the posts 27 to 32 and 33 are moved. I haven't.

Next, when the slide chassis 11 is moved from the state shown in FIG. 2 in the direction C shown in the drawing, the connecting pin 21 moves together with the positioning plate 12 and the connecting pin 18 moves while the engaging positions of the guide groove and the connecting pin remain unchanged. , 19 horizontally move in the through grooves 16, 17. That is, the main body 20 having the cassette 6 built therein is the slide chassis.
It moves in the direction of drum 7 at the same speed as 11, and finally it moves to the 4th
The state is as shown in the figure. At this time, the coupling pins 18 and 19 have the through grooves 16 and
It is located at the left end of 17, and the connecting pin 21 is located at the lower end of the guide groove 13.

At this time, a loading mechanism (not shown) is operated along with the movement operation of the slide chassis 11, the reel unit 25, the light emitting unit 26 and the posts 27 to 30 are moved while pulling out the tape 9, and the post 31 is pressed against the post 35. The result is as shown in Fig. 5. In this state, the drum 7 bites into the recess 8 of the cassette 6, and the space occupied by the cassette mounting mechanism is smaller than that of the conventional configuration.

As is clear from the above, the cassette holder is divided into two parts, the rotating arm part 15 and the main body part 20 in comparison with the conventional single structure, and both can be expanded and contracted by the movement operation of the slide chassis. The mounting mechanism can be minimized, and the transport system can be downsized.

In the above embodiments, the example of application to the 8 _mm VTR is illustrated, but the present invention is not limited to this, and the present invention can be applied to all tape cassettes having a recess in which the rotary drum can bite.

[Advantages of the Invention] As described above, according to the present invention, the cassette holder portion is separated into the rotating arm portion and the main body portion, and the degree of coupling between the two can be changed by the slide chassis. Therefore, the fixed length of the rotating portion is shortened. However, it is possible to reduce the size of the cassette mounting mechanism during loading.

[Brief description of drawings]

FIG. 1 is a side view showing an embodiment of the present invention, FIG. 2 is a side view showing a state in which a cassette is mounted on the cassette mounting device of FIG. 1 and a holder portion is closed, and FIG. 4 is a side view of the above embodiment showing the completion of loading, FIG. 5 is a plan view corresponding to FIG. 4, and FIG. 6 is a configuration of a conventional cassette mounting device. Perspective view,
FIG. 7 is a plan view showing a schematic configuration of the cassette applied to the mounting of FIG. 6 and the embodiment of the present invention. In the figure. 6: Cassette 7: Drum 10: Machine body 11: Slide chassis 12: Positioning plate 13: Guide groove 14: Rotating fulcrum 15: Rotating arm part 16,17: Through groove 18,19, 21: Coupling pin 20: Main body part 27 to 32: Post 33: Pinch roller

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Takashi Kimura, Takashi-ku, Kawasaki, Kanagawa, 770 Shimonoge, Takano-ku, Kanagawa Prefecture, Tamagawa Plant, Canon Inc. In-house (72) Inventor Masahiro Ando, 770 Shimonoge, Takatsu-ku, Kawasaki-shi, Kanagawa Canon Inc., Tamagawa Works (56) Reference JP-A-1-143060 (JP, A) Actual Development Sho 61-195563 (JP, U)

Claims (1)

(57) [Claims] 1. A cassette mounting device for loading a cassette containing a tape-shaped recording medium into a holder part, and moving the cassette forward and backward from a cassette insertion position to a position where the loading is completed. The main chassis and the like are provided with a main body portion for holding the cassette and a plurality of guide grooves for slidably coupling the main body portion by locking a plurality of locking members provided on the other side surface of the main body portion. A rotary arm portion having one end rotatably supported, and a positioning member having an arcuate groove for rotatably locking at least one of the locking members with a support point of the rotary arm portion as a rotation center. And a slide chassis to which the positioning member is attached and which moves the main body portion in accordance with a sliding operation of the positioning member.