JPH0434230B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention provides a tape cassette with a narrower inter-reel distance and smaller external shape than a normal tape cassette, which can be mounted on a normal tape cassette deck for recording or playback. The present invention relates to a cassette adapter for changing the running path of a magnetic tape by manual operation.

With conventional cassette adapters, when pulling out the magnetic tape from the front opening of the small tape cassette to the magnetic tape running path of the cassette adapter, sudden pulling operations can cause the magnetic tape to slack, and the cassette adapter may also become loose. When rewinding the magnetic tape from the magnetic tape running path to the front opening of the small tape cassette, there has been a problem in that if a sudden rewinding operation is performed, the magnetic tape will be left unwound.

SUMMARY OF THE INVENTION In view of the above, an object of the present invention is to provide a cassette adapter that can prevent the magnetic tape from sagging or remaining unwound due to sudden withdrawal or rewinding.

That is, the present invention is capable of removably storing a small second cassette whose magnetic tape travel path is different from that of the first cassette, and has an adapter main body that is approximately the same size as the first cassette. ,
The adapter body is configured to pull out the magnetic tape from the front opening of the second cassette to a position corresponding to the magnetic tape running path of the first cassette by moving the adapter body forward from the non-operating position to the operating position, and A magnetic tape drawer/storage means for storing the magnetic tape in the second cassette by moving forward from an operating position to a non-operating position, and a gear forming a part of the magnetic tape drawer/storage means rotate. Therefore, a damper means is provided which applies a load resistance depending on the rotational speed, and the damper means can prevent sudden movement of the magnetic tape drawer/storage means, thereby preventing sudden movement of the magnetic tape drawer/storage means. This prevents the magnetic tape from sagging or unwinding.

An embodiment of the present invention will be described below based on the drawings. 1 and 2 are schematic plan views of a cassette adapter according to an embodiment of the present invention, and FIG.
The figure shows a state in which a small tape cassette is attached, and FIG. 2 shows a state in which the magnetic tape of the attached small tape cassette is pulled out. 1 is an adapter body of a cassette adapter that can be attached to a normal tape cassette deck, and 2 is a small tape cassette housed within the adapter body 1. The magnetic tape 4 wound around the supply reel 3 of the small tape cassette 2 is
Take-up reel 6 via tape guides 5a and 5b
The small tape cassette 2 is connected to the positioning members 7a, 7 installed on the adapter body 1.
It is positioned by b.

Next, the magnetic tape drawer storage means will be explained. The magnetic tape drawer storage means for drawing and storing the magnetic tape 4 between the front opening of the small tape cassette 2 and the position corresponding to the tape running path of the cassette adapter 1 includes an operation lever 21,
Intermediate arm 18, first magnetic tape pull-out arm 14, first tape pull-out pin 15, second tape pull-out arm 25, second tape pull-out pin 2
7, arm 33, tension spring 39, connection wire 4
0, gear 9, 10, 12, 32, 35, 36, 3
A gear 8 is fixed to the lower flange of the take-up reel 6 of the small tape cassette 2, which selects the pull-out operation and storage operation according to the sliding direction of the operating lever 21. Gear 8 is connected via idler gears 9 and 10 to a gear 12 which is concentrically secured to a take-up drive wheel 11 which engages a take-up reel stand (not shown) of a conventional tape cassette deck. . A first tape pull-out pin 1 is attached to one end of a first tape pull-out arm 14 rotatably supported by a support shaft 13.
When the first tape pull-out arm 14 rotates counterclockwise about the support shaft 13, the first tape pull-out pin 15 pulls the magnetic tape 4 into the small tape cassette 2. It can be pulled out to the outside. A drive pin 16 is implanted at the other end of the first tape pull-out arm 14, and this drive pin 16 is formed at one end of an intermediate arm 18 rotatably supported by a support shaft 17. It is engaged with the elongated hole portion 19 . intermediate arm 18
A drive pin 20 is implanted at the other end, and this drive pin 20 engages with a first cam groove 22 formed at one end of the operating lever 21 . A second cam groove 23 is formed on the other end side of the operating lever 21, and a second tape rotatably supported by a support shaft 24 is mounted in the second cam groove 23. A drive pin 26 implanted in one end of the drawer arm 25 is engaged. A second tape pull-out pin 27 is implanted at the other end of the second tape pull-out arm 25.
By rotating clockwise about the support shaft 24, the second tape pull-out pin 27 can pull out the magnetic tape 4 to the outside of the small tape cassette 2. The operating lever 21 is the guide pin 2
8 and a guide member (not shown) that abuts on the end surfaces 21a, 21b of the operating lever 21 so as to be slidable left and right. A rack 30 is formed on one side of the other end of the operating lever 21, and this rack 30 is attached to a support shaft 3.
1 is engaged with a gear 32 which is rotatably supported by. Further, one end of an arm 33 is rotatably supported on the support shaft 31, and this arm 33
A gear 35 that meshes with the gear 12 in the state shown in FIG.
is rotatably supported. The spindle 34 has the gear 35 and a one-way clutch (not shown).
A gear 36 coupled via is pivotally supported,
This gear 36 meshes with a gear 37 that is pivotally supported on the support shaft 31 and coupled to the gear 32 via a friction member (not shown). This one-way clutch is configured to transmit rotational driving force only when rotating counterclockwise, so when pulling out the magnetic tape 4, it cuts off the rotational driving force,
Communicate when storing. Further, the arm 33 is biased counterclockwise about the support shaft 31 by a tension spring 39 stretched around a pin 38 implanted at the other end. Furthermore, one end of a connecting wire 40 is connected to the pin 38, and the other end of this connecting wire 40 is connected to a pin 43 implanted in a cover 42 via a wire guide pin 41.
The cover 42 is rotatably supported by a support shaft 44, and when the cover 42 is in the open position as shown in FIG. It's sagging. Further, as shown in FIG. 2, the cover 42 is configured to be locked by a sliding locking member 45 in the closed state, and the operating lever 21 is locked by a sliding lock member 45.
An operating knob 46 is attached to the.

Next, the operation of pulling out the magnetic tape 4 will be explained. Further, as shown in FIG. 1, a small tape cassette 2 is inserted into the adapter body 1. At this time, the position of the small tape cassette 2 is determined by the positioning members 7a and 7b. Next, with the cover 42 open, the operating knob 46 attached to the operating lever 21
By sliding in the direction of arrow A, the drive pin 20 engaged with the first cam groove 22 formed in the operating lever 21 is driven. Correspondingly, the first tape pull-out arm 14 rotates counterclockwise about the support shaft 13 via the intermediate arm 18, and the first tape pull-out pin 15 moves the magnetic tape 4 to the position shown in FIG. Pull it out. At the same time, the drive pin 26 engaged with the second cam groove 23 is driven, and accordingly, the second tape drawer arm 25 rotates clockwise about the support shaft 24, and the second tape drawer arm 25 rotates clockwise about the support shaft 24. Pin 27 is magnetic tape 4
Pull it out to the position shown in Figure 2. On the other hand, as the operating lever 21 slides, the gear 32 is rotated counterclockwise by the rack 30.
7 and 36, but the rotational transmission force is blocked by a one-way clutch provided between the gears 36 and 35, so when the tape is drawn out, the take-up reel 6 is not rotated by the gear train. Regulatory forces do not work. Therefore, when the operation knob 46 is suddenly slid, the magnetic tape is also rapidly pulled out by the second tape pull-out pin 27 installed in the second tape pull-out arm, so that the take-up reel 6 itself is pulled out. It continues to rotate due to inertia and ends up pulling out more magnetic tape 4 than necessary. In addition, a very large force is applied to the magnetic tape, which may cause tape damage such as stretching, wrinkles, and scratches.

Therefore, in this embodiment, as shown in FIG.
A damper 50 is provided so that the viscous resistance of the oil increases in proportion to the rotational speed of the gears 37 and 32 by injecting the oil. Therefore, the operation knob 46 cannot be operated suddenly, so that sudden pulling out of the magnetic tape 4 is avoided, and sagging of the tape when the tape is pulled out can be prevented. Furthermore, even if the force applied to the operating knob 46 is unstable, smooth and stable tape withdrawal is achieved, which not only improves operability but also stabilizes the tape tension.
In place of the damper 50, as shown in FIG. 4, vanes 51 are attached to the upper end surface of the gear 37 at appropriate intervals in the circumferential direction, so that the air resistance increases in proportion to the rotational speed of the gear 37. A similar effect can be obtained even if the damper 52 is provided. Furthermore, in addition to the dampers 50 and 52, a gear 37
A similar effect can be obtained by using a damper that uses eddy current, for example, to generate a load resistance that depends on the rotational speed of the motor.

Finally, the cover 42 is closed and locked by the sliding locking member 45. At this time, the counterclockwise rotation of the cover 42 about the support shaft 44 causes the arm 33 connected to the cover 42 via the connecting wire 40 to rotate clockwise about the support shaft 31, and the arm Support shaft 34 on 33
The gear 35 pivotally supported is separated from the gear 12.

Next, pull out the magnetic tape 4 from the state shown in Figure 2.
The operation when storing the tape into the small tape cassette 2 will be explained. First, slide the lock member 45 to unlock the cover 42, and then
2 to the state shown in FIG. At this time, the connecting wire 40 connected to the pin 43 of the cover 42 is loosened, and the arm 33 is rotated counterclockwise around the support shaft 31 by the tensile force of the tension spring 39, and the arm 33 is attached to the arm 33. A gear 35 pivotally supported on a support shaft 34 meshes with the gear 12. Next, by sliding the operating knob 46 in the opposite direction to the arrow A direction, the operating lever 21 moves in the opposite direction to the arrow A direction. At this time, the drive pin 20 that engages with the first cam groove 22 is driven and the first tape pull-out arm 1 is moved through the intermediate arm 18.
4 rotates clockwise around the support shaft 13, and the drive pin 26 engages with the second cam groove 23.
is driven, the second tape pull-out arm 25 rotates counterclockwise about the support shaft 24, and both tape pull-out arms 14, 25 return to the state shown in FIG. Further, as the operating lever 21 moves, the gear 32 is rotated clockwise by the rack 30, and the gears 37, 36, 35, 12, 1
0, 9, and 8, the take-up reel 6 rotates clockwise, and the magnetic tape 4 that has been pulled out is stored in the small tape cassette 2. Furthermore, 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 the gear 32 is rotated by a friction member provided between the gear 32 and the gear 37. ，
By creating a slip between the magnetic tapes 37, the magnetic tape 4 can be stored in the small tape cassette 2 without any slack. At this time, if the operating knob 46 is suddenly slid, even if the operating lever 21 moves, the friction material will slip and the take-up reel 6 will not rotate, making it impossible to store the magnetic tape 4 in the small tape cassette 2. By providing the damper 50 as in this embodiment, the operating knob 46 can be prevented from sliding rapidly and the friction material will not cause unnecessary slipping, so the magnetic tape 4 can be stored in the small tape cassette 2.

As explained above, according to the cassette adapter according to the present invention, the damper means can suppress sudden movement of the operating member, thereby preventing the magnetic tape from sagging due to the inertial force of the take-up reel when the tape is pulled out. Furthermore, it is possible to achieve smooth and stable tape drawer and improve operability. Further, the magnetic tape will not be damaged due to excessive tension being applied to the magnetic tape due to sudden withdrawal. Furthermore, when storing the tape, slippage of the winding force transmitting means due to sudden movement of the operating member can be completely suppressed.

[Brief explanation of drawings]

The drawings show an embodiment of the present invention; FIG. 1 is a schematic plan view of the cassette adapter in a state where a small tape cassette is stored, and FIG. 2 is a schematic plan view of the cassette adapter in a state in which a magnetic tape is pulled out from the small tape cassette. 3 is a cross-sectional view of one example of the damper means used in the present invention, and FIG. 4 is a cross-sectional view showing another example of the damper means that can be used in the present invention. 1...adapter body, 2...small tape cassette (second cassette), 4...magnetic tape, 8,
9, 10, 12, 32, 35, 36, 37... Gear, 14, 25... Tape drawer arm, 15,
27...Tape drawer pin, 18...Intermediate arm, 21...Operation lever, 30...Rack, 5
0,52...damper.

Claims (1)

[Scope of Claims] 1. An adapter capable of removably housing a small second cassette 2 whose magnetic tape travel path is different from the first cassette, and which is approximately the same size as the first cassette. A magnetic tape 4 is inserted into the first cassette from the front opening of the second cassette by manually moving the adapter main body 1 from the non-operating position to the operating position.
The magnetic tape 4 is stored in the second cassette 2 by being pulled out to a position corresponding to the magnetic tape running path of the cassette and manually moved from an operating position to a non-operating position. Drawer storage means 9, 10, 12, 14, 1
5, 18, 21, 25, 27, 32, 33, 3
5, 36, 37, 39.40, and an opening/closing cover 42 for engaging/separating gear trains 9, 10, 12, 32, 35, 36, and 37 constituting the magnetic tape drawer storage means; Therefore, damper means 5 provides load resistance to the gears 32, 35, 36, 37 that are spaced apart from the gear train, depending on their rotational speeds.
0,52, and configured to transmit the load resistance of the damper means to the tape pull-out means only when the gear train is engaged.