JPS5873069A - Cassette adaptor - Google Patents

Abstract

PURPOSE:To prevent malfunction, by moving one tape drawing mechanism to an operating position, after the end of operation of another tape drawing mechanism, in a system applying a small-sized cassette to a large size magnetic tape device. CONSTITUTION:When an operating arm 53 constituting one tape drawing mechanism is opened and an operating knob 57 provided for an operating another tape drawing mechanism is slided right, tape pickup pins 15, 27 draw tape 4 in a small-sized cassette 2 on its way. In turning the arm 53 counterclockwise, a slide lever 39 is slided left, fixed levers 31, 46 are turned with tensile springs 32, 47 and pins 15, 27 are positioned with positioning blocks 62, 64 provided for a case 1 of a large size cassette adaptor main body and pressing sections 31a, 46a. When the knob 57 is not slided right, since a latch 53a contacts a control lever 21a, and the arm 53 is not turned.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an apparatus for recording or reproducing all signals using magnetic tape, such as an audio tape recorder or a video tape recorder (hereinafter collectively referred to as a magnetic tape apparatus). ), and is particularly applicable to small cassettes whose magnetic tape travel path is different from the large cassettes used in large magnetic tape devices, and also to large magnetic tape devices. It has been made possible.

Conventionally, as a cassette adapter configured as described above, a small cassette is stored in a chair case that is almost the same as a large cassette, and the magnetic tape stored in the small power center is transferred to the magnetic case of the large cassette. Position 1 corresponding to the driving route
There is one that can be used by pulling it out and attaching it to a large magnetic tape device.

However, when pulling out a magnetic tape, in the case of a cassette adapter that uses two operating members to allow the magnetic tape to be completely pulled out at position 1 only after a two-step operation, there is an operating order for the two operating members. There has been a problem in that the operations are complicated and may result in erroneous operations.

The present invention uses first and second tape pull-out mechanisms and includes a restraining mechanism such that the second tape pull-out mechanism can move only when the first tape pull-out mechanism is in the completed operation position. The present invention provides a cassette adapter which solves the above-mentioned conventional problems and is easy to operate.

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 a large magnetic tape device such as the VH8 video tape recorder which is currently in widespread use. A case 1 without an adapter is shown loaded with two small cassettes applicable to a small magnetic tape device. The small cassette 2 is smaller than a large cassette that can be applied to a large magnetic tape device, and a magnetic tape 4 similar to the magnetic tape of the large cassette can be drawn outward in a loop from the front part. An opening is formed.

The magnetic tape 4 is wound from the supply reel 3 to the take-up reel 6 via tape guides 6 and 5b. Positioned by n.

1. The lower flange of the take-up reel 6 of the small cassette 2 has eight gears, and is connected to the 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 winding drive wheel 11 coupled to the winding drive wheel 11.

A first tape pull-out pin 16 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 16 can pass through the opening A to the outside of the small cassette 2 containing four magnetic tapes and pull it out in a loop shape.

Furthermore, 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 which is rotatably supported by an arm 7 .

A drive pin 2o is implanted at the other end of the intermediate arm 18, and the drive pin 2of's is connected to a first drive pin 2o provided at the operating lever 21 constituting the first tape pull-out mechanism. It engages with the cam groove 22. Furthermore, 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.
4 is implanted at one end of a second tape pull-out arm 26 which is rotatably supported by a support shaft 26. Second
A second tape pull-out pin 27 is implanted at the other end of the tape pull-out arm 26 of the second case.

By rotating the 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 cassette 2.

A guide groove 2 that engages with a guide pin 28 on the operating lever 21
It is slidably guided to the left and right by a guide member (not shown) in contact with the end surface 29!

FIG. 2 is a plan view for explaining the configuration of the second tape pull-out mechanism, and is shown separately from FIG. 1 for ease of viewing. In FIG. 2, a first fixed lever 3 is rotatably and slidably supported by a support shaft 30.
1, a first tape pull-out pin 15 is provided in a pressable manner and is biased to rotate counterclockwise by a tension spring 32, and its position is regulated by a stopper 33. A drive bin 3 is attached to one end of the first fixed lever 31.
The drive pin 34 is engaged with a long hole 37 of an intermediate arm 736 rotatably supported by a support shaft 35. Furthermore, intermediate arm 3
6 is provided with a cam 3B, and the slide lever 3 (
It engages with the pin 40 which is NC-implanted. A pin 41 is similarly implanted at the other end of the slide lever 39, and the pin 41 is connected to an elongated hole 44 provided at one end of an intermediate arm 43 rotatably supported by a support shaft 42. is engaged with. A support shaft 46 implanted at the other end of the intermediate arm 43
The second fixing lever 46 is rotatably provided. The second fixing lever 46 is urged to rotate clockwise by a tension spring 47 so as to be able to suppress the second tape pull-out pin 27, and its position is restricted by a stopper 48. Further, the slide lever 39 is guided by an elongated hole 50.51 that engages with a guide pin 28.49, and is mounted on an operating arm 63 that is rotatably supported by a support shaft 62. f'Lm drive pin 64
is engaged with.

In fact, as shown in FIG. 3, the front opening BK of the case 1 through which the magnetic tape can be exposed is provided with a front cover 66 that can be opened and closed by rotation.

Furthermore, the rear side plate 66 on the surface facing the front lid 65 has 58 operation openings for exposing the operation knob 67 provided on the operation lever 21, which can be closed by the operation arm 63. I'm here.

In addition, the operating lever 21 has a K system (
A lever 21a is provided and is configured to operate integrally with the operating lever 21.

On the other hand, the operating arm 63 is provided with an engaging portion 531L in a portion that contacts the control lever 21&, and when the control lever 211L is in the position shown in FIG. 7, it engages with the control lever 21&! The operating arm 63 is designed so that L comes into contact with it.
Rotation can be prevented.

Next, the operation and operation of this embodiment will be explained. 1
First, as shown in Fig. 1, there is a small cassette 2 inside the case 1.
Load it. At this time, the position of the small cassette 2 is determined by the positioning members 7J and 7b.

Next, with the operation arm 63 open as shown in FIG.
The operation lever 21 is designed to slide in the direction of 9.
The drive pin 20 engaged with the first cam groove 22 provided at f' is driven.

Accordingly, the first tape pull-out arm 14 rotates via the 18 intermediate arms, and the first tape pull-out pin 16 pulls out the magnetic tape 4 at intermediate position 1 shown in FIGS. 4 and 6. . Similarly, the drive pin 24 engaged with the second cam groove 23 is driven, and as a result, the second tape pull-out arm 26 rotates, and the second tape pull-out pin 27 moves the four magnetic tapes. It is pulled out at position 1 on the way as shown in FIG.

Next, by rotating the operating arm 53 in the counterclockwise direction 1 from the state shown in FIG. 6, the slide lever 39 slides in the direction of the arrow 6o. According to this movement, the intermediate arm 3
The first fixing lever 31 slides in the direction of the arrow 61 after six sessions. As a result, as shown in FIG. 6, the pressing portion 311L provided at the tip of the first fixing lever 31 is rotated counterclockwise by the tension spring 32, and presses the 16 first tape pull-out pins. As a result, the first tape pull-out pin 15 is positioned by sandwiching the magnetic tape between the positioning block 62 and the pressing portion 311L.

Similarly, the second fixing lever 46 slides in the direction of arrow 63 via the intermediate arms 43, and as shown in FIG.
The pressing portion 461L provided at the tip of the fixed lever 46 is rotated clockwise by the tension spring 47, and the second tape pull-out pin 27 is pressed, thereby further pulling out the magnetic tape 4. Finally, the second tape pull-out pin 2 is positioned by being held between the nL positioning block 64 provided in the case 1 and the suppressing portion 46&. Note that the operating arm 63 is fixed by sliding a sliding locking member 66.

Next, a case will be described in which an attempt is made to move the operating arm 63 with the magnetic tape 4 not fully pulled out (the state shown in FIG. 2).

FIG. 7 shows the operating lever 21. It is a plan view of the main part showing only the part related to the operating arm 11 and 3, and even if you try to rotate the operating arm 63 around the support shaft 52, the control lever 2.11L and the engaging part 532L will not work properly. 2, so that the operating arm 53 cannot be rotated due to contact with the operating arm 53.

Therefore, when the four magnetic tapes are partially pulled out (FIG. 6), the control lever 211L and the engaging portion 531L do not come into contact with each other, so that the operating arm 63 can be rotated.

As is clear from the above description, the present invention includes a first tape pull-out mechanism (the operating lever 21
etc.) and a second tape pull-out mechanism (corresponding to the operating arm 63 etc.), and the second tape pull-out mechanism operates from the non-operating position only when the first tape pull-out mechanism is in the operating position. It is equipped with a control mechanism (corresponding to the control lever 21a, etc.) that can be moved in position 1, and when the first tape pull-out mechanism is in the non-operating position, the second tape is formed, thereby preventing erroneous operation. This prevents damage to the magnetic tape.

In fact, the tape is pulled out in two stages.
The first stage pull-out mechanism also has the advantage of not requiring high precision because it is perfectly positioned at the first stage.

[Brief explanation of the drawing]

FIG. 1 is a plan view showing the main part configuration of a first tape pull-out mechanism in an embodiment of the present invention, and FIG. 2 is a plan view showing the main part structure of a second tape pull-out mechanism in the same embodiment. , FIG. 3 is a perspective view of the same embodiment, FIGS. 4 and 6 are plan views of essential parts of the same embodiment when the magnetic tape is pulled out at halfway point 1, and FIG. FIG. 7 is a plan view of the main part in a state where the foot is fixed, and FIG. 7 is a configuration diagram of the main part of the control mechanism section in the same embodiment. 1... Case, 2... Small cassette,
3... Supply reel, 4... Magnetic tape, 6... Take-up reel, 14... First tape pull-out arm, operation lever, 26...・・・・・・
・Second tape drawer arm, 27...Second
tape pull-out pin, 31...first fixing lever, 46...second fixing lever <-, 63...
...Operation arm, 63! L...Engagement part, 6
7...Operation knob, M...opening.

Claims (1)

[Claims] A magnetic tape that is smaller than the first cassette and has a predetermined size and a predetermined shape, and has a magnetic tape similar to the magnetic tape of the first cassette, and can be wound with the magnetic tape. A second cassette having a tape reel and an opening through which the magnetic tape can be pulled out in a loop shape can be removably loaded inside the cassette, and is substantially the same as the first cassette. With a cassette storage case of the same or almost the same size and the second cassette loaded in the cassette storage case, the magnetic tape in the second cassette is connected to the magnetic tape running path of the first cassette. a first tape pull-out mechanism and a second tape pull-out mechanism that move from a non-operating position to an operating position 1 in order to pull it out to a position corresponding to a control mechanism configured to be movable, and configured to prevent the second tape draw-out mechanism from being operated by the control mechanism when the first tape draw-out mechanism is in a non-operating position. A cassette adapter characterized by: