JPS6044742B2 - cassette adapter - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to devices that record or reproduce signals using magnetic tape, such as audio tape recorders or video tape recorders (hereinafter collectively referred to as magnetic tape devices). More specifically, the small cassette, which has a different magnetic tape running path than the large cassette that can be applied to large magnetic tape devices, can also be applied to large magnetic tape devices. It concerns cassette adapters.

Conventionally, as a cassette adapter configured as described above, a small cassette is housed in a case of approximately the same shape as a large cassette, and the magnetic tape housed in the small cassette is placed in the running path of the magnetic tape of the large cassette. A device J is being considered in which the tape is pulled out to the corresponding position and then loaded into a large magnetic tape device so that it can be used.

However, if the magnetic tape in the small cassette is loaded into a large magnetic tape device without being pulled out to the running path of the large cassette, the magnetic tape will not be located at the correct location in the large magnetic tape device, so it will not function properly. In addition to being unable to operate and record or reproduce signals, there was a problem in that the magnetic tape could be damaged by the tape pull-out pin provided on the large magnetic tape device. The present invention solves the above-mentioned conventional problems by configuring the cassette adapter so that it cannot be loaded into the force set holder installed in a large magnetic tape device unless the magnetic tape is pulled out from the small force set. The present invention provides a force set adapter that can solve the problem.

Hereinafter, the present invention will be explained based on illustrated embodiments.

FIG. 1 is a plan view showing the main structure of an embodiment of the present invention, and shows a cassette having a size and shape applicable to large magnetic tape devices such as VHS video tape recorders that are currently in widespread use. A small force set 2 applicable to a small magnetic tape device is shown loaded in a case 1 of the adapter body. The small force set 2 is smaller than the large force set that can be applied to a large magnetic tape device, and has a magnetic tape 4 similar to the magnetic tape of the above force set drawn out in a loop shape on the front side. Opening A that made it possible
is formed. The magnetic tape 4 is wound from the supply reel 3 onto a take-up reel 6 via tape guides 5a and 5b.

This small force set 2 is positioned by positioning members 7a and 7b provided on the case 1. Further, the lower flange of the take-up reel 6 of the small force set 2 has a gear 8, and the winding is coupled to a take-up reel stand (not shown) of the large magnetic tape device via idler gears 9 and 10. It meshes with a gear 12 provided on a take-up drive shaft 11.

A first tape pull-out pin 15 is implanted at the tip of a first tape pull-out arm 14 that is rotatably supported by a support shaft 13, and the first tape pull-out arm 14 is rotated counterclockwise. By rotating in the direction, the first tape pull-out pin 15 can pull the magnetic tape 4 out of the small force set 2 in a loop.

Further, a drive pin 16 is implanted at the other end of the first tape pull-out arm 14, and this drive pin 16 is attached to the support shaft 1.
It engages with an elongated hole 19 provided at one end of an intermediate arm 18 rotatably supported by an arm 7 . intermediate arm 1
A drive pin 20 is implanted at the other end of 8, and the drive pin 20 is inserted into a first cam groove 22 provided in the operating lever 21.
is engaged with.

Further, the operating lever 21 is provided with a second cam groove 23, and a drive pin 24 is engaged with the second cam groove 23, and the drive pin 24 is rotated by a support shaft 25. It is implanted at one end of the second tape pull-out arm 26 which is freely pivoted. A second tape pull-out pin 27 is implanted at the other end of the second tape pull-out arm 26.
By rotating the second tape pull-out arm 26 clockwise, the second tape pull-out pin 27 can pull out the magnetic tape 4 to the outside of the small force set 2. It is adapted to be slidably guided left and right by a guide groove 29 that engages with the guide pin 28 and a guide member (not shown) that is in contact with end surfaces 29a and 29b of the operating lever 21.

The operating lever 21 is provided with a rack gear 30.
This rack gear 30 meshes with a gear 32 rotatably supported by a support shaft 31. Further, an arm 33 is rotatably supported on the support shaft 31, and a gear 35 is provided rotatably by a support shaft 34 implanted in the arm 33, and the gear 35 meshes with the gear 12. are doing. gear 3
5 is provided with a gear 36 that rotates via a gear 35 and a one-way clutch (not shown), and the gear 36 is connected to a gear 37 that is coupled to the gear 32 via a friction member (not shown). They mesh together. Further, the lever 33 is biased to rotate counterclockwise by a tension spring 39 stretched around a pin 38 implanted in the lever 33 . Further pin 3
8 is connected to a connecting wire 40, and the other end of the connecting wire 40 is connected to a pin 42 implanted in the cover 41 via a wire guide pin 44. cover 4
1 is rotatably supported by a support shaft 43, and the first
As shown in the figure, when the cover 41 is in the open position, the gear 35 is in contact with the gear 12, and the connecting wire 40 is connected so as to be slightly slack. As shown in FIG. 2, the cover 41 is configured to be locked by a sliding snap-on member 45 in the closed state. Further, an operating knob 46 is provided on the left side of the operating lever 21, and when the magnetic tape 4 is not pulled out of the small force set 2 as shown in FIG. In addition to protruding outward, a protrusion 26 provided at the end of the second tape pull-out arm 26 also protrudes outward from the case 1 .

Next, the operation and operation of this embodiment will be explained.

First, as shown in FIG. 1, the small force set 2 is inserted into the force set housing part in the case 1. At this time, the position of the small force set 2 is determined by the positioning members 7a and 7b. Next, by moving the operating knob 46 provided on the operating lever 21 in the direction of the arrow 47 with the cover 41 open, the drive lever engaged with the first cam groove 22 provided on the operating lever 21 is moved. Pin 20 is driven. Along with this, the first tape pull-out arm 14 rotates via the intermediate arm 18, and the first tape pull-out pin 1
5 pulls out the magnetic tape 4 to the position shown in FIG.

Similarly, the drive pin 24 engaged with the second cam groove 23 is driven, and as a result, the second tape pull-out arm 2
6 is rotated, and the second tape pull-out pin 27 pulls out the magnetic tape 4 to the position shown in FIG. Finally, by closing the cover 41 and locking the cover 41 with the sliding lock member 45, the arm 33 connected by the connecting wire 40 rotates clockwise, and the gear provided on the arm 33 rotates clockwise. 35 separates from gear 12. Therefore, when the state shown in FIG. 2 is reached, it becomes possible to load the tape into a large magnetic tape device, and as shown in FIG. By inserting the case 1, ie, the present cassette adapter 1, into the portion 48a, it is possible to record or reproduce signals using a large-sized magnetic tape device. Next, pull out the magnetic tape 4 from the state shown in Figure 2.
A case will be described in which a case is stored in the small force set 2.

First, the lock member 45 is slid to unlock the cover 41, and the cover 41 is opened to the state shown in FIG. At this time, the connecting wire 40 connected to the pin 42 at the other end of the cover 41 loosens, and the arm 33
The arm 33 is rotated counterclockwise by the tensile force of the tension spring 39, and the gear 35 provided on the arm 33 and the gear 12 mesh with each other. Further, by moving the operating knob 46 in the direction of the arrow 49 (FIG. 2), the operating lever 21 is moved in the direction of the arrow 49.

Along with this, the first tape pull-out arm 14 is rotated clockwise by the first cam groove 22, and the second tape pull-out arm 2 is rotated by the second cam groove 23.
6 rotates counterclockwise and returns to the state not shown in FIG. As the operating lever 21 moves, the lock gear 30
As the gear 32 meshing with the rack gear 30 rotates, the gear 12 provided on the winding drive shaft 11 rotates via the gears 37, 36, 35, and the gears 10, 9 rotate. As the gear 8 rotates through the magnetic tape 4 and the take-up reel 6 rotates, the magnetic tape 4 that has been pulled out is stored in the small force set 2. At this time, the gear 32 is configured to rotate more than the number of rotations required to wind up the magnetic tape 4 that has actually been pulled out, and a friction member (Fig. (not shown) by slipping.
The magnetic tape 4 can be stored in the compact force set 2 without slack. Therefore, if the state shown in FIG. 1 is reached, even if one attempts to load the present cassette adapter into the force set holder of a large magnetic tape device, the size f1 of the opening 48a of the force set holder 48 will be reduced as shown in FIG. Since the dimension F2 of the case 1 (width dimension of the case 1 + protrusion dimension of the operation knob 46) is larger than that of the case 1, the case 1 cannot be completely loaded into the force set holder 48. The same applies to a force set holder in which the case 1 is inserted in the longitudinal direction, and the dimension F of the case 1 is shown in FIG.
3 (Vertical width dimension 7 of case 1 + protrusion dimension of protrusion 26a)
Since it is larger than the dimension E4 of the opening 48a'' of the force set holder 4', it cannot be inserted into the force set holder 485 as well.

Note that the protrusion 26a utilizes a part of the second tape pull-out arm 26. As is clear from the above description, the present invention provides an operating member (corresponding to the operating lever 21 in the above-described embodiment) for pulling out and storing a magnetic tape.
A protruding member (corresponding to the operating knob 46 and protrusion 26a) is provided to substantially change the external dimensions of the case in conjunction with the magnetic tape device, and when the magnetic tape is not pulled out, the external dimensions of the case are the same as those of the magnetic tape device. The size of the force set insertion opening in the force set holder is larger than that of the force set holder installed in the case, so that the force set adapter cannot be inserted into the force set holder, so the magnetic tape inside the case is large. Only when the magnetic tape is placed in the correct location corresponding to the running path of the magnetic tape in the power set, it can be loaded into the magnetic tape device, and signals can be recorded or played back reliably and damage to the magnetic tape can be prevented. can do.

In addition, when multiple protruding members are provided as in the above-mentioned embodiment, incorrect insertion may occur if the loading direction is vertical or horizontal when loading the cassette adapter into the force set holder. Prevention can be carried out.

In the above-described embodiment of the present invention, the operation knob 46 and the protrusion 26a are used as the protruding members, but the same effect can be obtained even if other members (for example, a part of the cover 41) are used. It goes without saying that this is included in the present invention.

[Brief explanation of the drawing]

1 and 2 are plan views of main parts of an embodiment of the present invention in various states, and FIGS. 3, 4, and 5 show a force setting adapter and a force setting holder in a magnetic tape device of the present invention. FIG. 1... Case, 2... Small force set, 3... Supply reel, 4... Magnetic tape, 6... Take-up reel, 8... Gear, 9, 10... Idler gears, 11
... Winding drive wheel, 12... Gear, 14... First tape pull-out arm, 15... First tape pull-out pin, 21... Operation lever, 26... Second tape pull-out arm. Tape pull-out arm, 26a... protrusion, 27...
・Second tape pull-out pin, 30...Rack gear,
46... Operation knob, 48, 4''... Force set holder, 48a, 48a''... Opening, A... Opening.

Claims (1)

[Claims] 1. A magnetic tape smaller than a first cassette having a predetermined size and shape containing a magnetic tape, and having a magnetic tape similar to the magnetic tape of the first cassette inside;
It has a tape reel on which the magnetic tape can be wound, and a second cassette having an opening through which the magnetic tape can be pulled out in a loop shape can be removably loaded inside the cassette, and With a cassette storage case that is substantially the same or approximately the same size as the first cassette, and the second cassette loaded in the cassette storage case, the magnetic tape in the second cassette is transferred to the first cassette. an operating member for pulling out the cassette to a position corresponding to the magnetic tape running path and storing the pulled-out magnetic tape in the second cassette; Two protruding members are provided to substantially change the outer dimensions in the lateral direction, and when the magnetic tape is not pulled out from the second cassette, the outer dimensions of the cassette storage case are changed by the protruding members. is the first
A cassette adapter having a size larger than the opening of a cassette insertion hole of a cassette holder in a magnetic tape device into which a cassette can be inserted, so that the cassette housing case cannot be inserted into the cassette holder. .