JPH0430691Y2 - - Google Patents

Description

[Detailed description of the invention] [Industrial application field] This invention is an R-DAT (rotary digital audio tape recorder) in which a magnetic tape stored in a cassette half is pulled out of the cassette half for recording and playback. This invention relates to improvements in the cassette half-loading mechanism of.

[Prior Art] Various loading mechanisms have been devised and commercialized in order to place this type of conventional cassette half at a predetermined position within a cassette tape recorder. An example of the above loading mechanism is VTR
As is often used in
There is a so-called slot-in mechanism that moves the cassette holder horizontally and vertically by inserting the cassette half into a slot portion having a cassette holder, and places the cassette half at a predetermined position.

[Problems to be solved by the invention] In this way, in the past, attempts were made to utilize VTR loading technology, but the R-
DAT devices require actions such as releasing the protective cover locking mechanism and sliding the protective cover on the bottom of the cassette half, so it has been impossible to directly apply this type of technology to VTRs.

[Means for Solving the Problem] This invention consists of a cassette holder that stores and supports a cassette half, a holder support that supports the cassette holder so that it can be moved horizontally and subsequently vertically, and a cassette holder that supports the cassette holder horizontally and vertically. a drive lever that engages with the cassette holder for movement and is rotatably attached to the holder support; a lever rotation control member formed on the rotation lever; and one end engaged with the rotation control member. a cover that is rotatably attached to the holder support and has a radial protrusion that engages with the other end of the claw member, and a claw member that suppresses rotation of the drive lever; and a driving force transmission mechanism for rotating the drive lever in response to rotation of the cover, the projection being engaged with the other end of the claw member by rotation of the cover. In this R-DAT device, the rotation control member and one end of the claw member are disengaged from each other when the rotation control member is released, and the drive lever starts rotating by the subsequent rotation of the cover.

[Function] The protrusion, claw and rotation control member of the cover allow the holder to move only by turning the cover, preventing the holder from moving when inserting the cassette holder, and ensuring that the cassette half is completely inserted into the cassette holder. I got used to it.

[Example] Hereinafter, an example of this invention shown in the drawings will be described in detail.

FIG. 1a shows a cassette holder, and a cassette half holder 11 has a hole 12 through which a reel that fits into the hub of the cassette half 4 shown in FIG. a protrusion 13 for pressing the lock pin 42 of the attached protective cover 41 to release the locked state;
A locking pin 14 is formed that locks the front edge of the protective cover 41 and slides the protective cover 41 in response to movement of the cassette half 4.
Further, 15 is a spring body that presses the cassette half 4 toward the receiving table 11 and holds it in the holder 1, 17 is a drive pin provided upright on both sides of the cassette holder 1, and 18a and 18b are provided upright on both sides. This is the guide pin installed.

2 is the cassette holder 1 as shown in Figure 1b.
It is a support body that supports horizontally and vertically movably, and consists of both side plates 21 and a connecting member 22,
The side plates 21 have an inverted L-shaped slit 23 through which the drive pin 17 is inserted, and an inverted L-shaped guide groove 24 in which the guide pin 18b engages below the inverted L-shaped slit 23 on each inner surface. However, an inverted L-shaped guide groove 25 is formed diagonally above and behind the inverted L-shaped slit 23 and engages with the guide pin 18a. It is connected.

Further, 3 is a cover that is pivoted to a pin 26 that stands upright on the outer surface of the side plate in the fan-shaped portion 32 that is connected via the arc-shaped gear 33 portion, and the cover 3 has one end attached to the fan-shaped portion 32 and the other end. are biased in the opening direction of the cover 3, that is, in the counterclockwise direction in the drawing, by spring bodies 5 respectively latched to the bins 27 provided upright on the side plates. Furthermore, the fan-shaped portion 32
A protrusion 34 that protrudes in the radial direction is formed on a part of the circumference.

Reference numeral 6 denotes a drive lever for moving the drive pin 17 inserted through the inverted L-shaped slit 23, and a groove 61 is formed in which the drive pin 17 engages. The drive lever 6 is rotatably supported by a shaft, and a gear 62 is formed on the outer periphery of the shaft support. In addition, the drive lever 6
A disc 6 is provided with a protrusion 64 formed on a part of its circumference.
3 are arranged coaxially and rotate together with the drive lever 6.

The rotation of the cover 3 is transmitted to the drive lever 6 by the arcuate gear 33, the intermediate gear 7 rotatably supported by the side plate 21, and the gear 62.

Reference numeral 9 denotes a claw member whose approximately middle portion is rotatably supported by a pin 92 provided upright on the side plate 21. The claw member 9 is biased clockwise in the drawing by a spring member 91, and has one end attached to the protrusion 64 and the other end attached to the protrusion 64. They are arranged so as to abut on the protrusions 34, respectively. Furthermore, 94 is a stopper pin that limits the rotation of the claw member 9.

Regarding the operation of the configuration of this embodiment, Figures 2a to 2
Referring to FIG. d and FIGS. 3a and 3b, FIG. 2a shows a state in which the cover 3 is opened and the cassette half 4 is inserted into the cassette holder 1. In this state, as shown in FIG. 3a, the locking pin is not released by the protrusion 13, and the locking pin 14 has not yet slid through the protective cover 41. Then, when the cassette half 4 is further pressed in the insertion direction, the cassette holder 1 receives a force that tends to move backward due to the insertion force of the cassette half 4, which further acts as a clockwise rotating force of the drive lever 6. The rotation lever 6 is prevented from rotating because the projection 34 is in contact with the other end of the claw member 9, so that the other end of the claw member 9 locks the projection 64. As a result, the cassette half 4 enters the cassette holder 1 whose movement is restrained, and the protrusion 13 comes into contact with the lock release pin 42, thereby releasing the slide lock of the protective cover 41 and releasing the locking pin 14 and the protective cover 41. Due to the engagement, the protective cover 41 opens as the cassette half 4 is inserted, and as the cassette half 4 is further inserted, the contact between the protrusion 13 and the lock release pin 42 is released again, and the protective cover 41 is locked in the open position. be done. Next, as shown in FIG. 2b, when the cover 3 is pressed and rotated clockwise in the drawing, the engagement between the protrusion 34 and the other end of the claw member 9 is released at a predetermined rotation angle. Then, the claw member 9 rotates clockwise until it is locked to the stopper pin 94 by the spring member 91. As a result, the lock between the claw member 9 and the protrusion 64 is released, and the action of the claw member 9 to suppress rotation of the lever 6 is released. be done. At the same time as this operation or due to a further slight rotation of the cover 3, the arcuate gear 33 meshes with the intermediate gear 7, and the rotation lever 6 starts rotating clockwise in accordance with the rotation of the cover 3. The drive pin 17 engaged with the drive lever groove 61 causes the cassette holder 1 to move horizontally to the right in the drawing, as shown in FIG. 2c. When cover 3 is further pressed, cassette holder 1 is turned upside down.
Shape slit 23 and inverted L-shape guide grooves 24, 25
It moves in the vertical direction as shown in FIG. 2d and descends to a predetermined position.

Although not shown, the spring body 5
A suitable lowering position locking mechanism is used to retain the cassette holder against the elasticity of the cassette holder.

In this state, the drive reel is inserted into hole 1 of the cradle.
2 and the hole 43 in the protective cover, and is fitted to the hub in the cassette half 4, making the magnetic tape ready for transport. Also, although not shown, the lid 44
such as providing a fixing pin that comes into contact with the lid 44 and opens the lid 44 in response to the lowering movement of the cassette half 4.
Appropriate lid opening means are employed.

If you want to take out the cassette half 4 after recording or playback, you can release the locking mechanism that works with the eject button to hold the lowered position, and the elastic force of the spring body 5 will cause the drive lever 6 and cover 3 to rebound. Rotate clockwise, Figure 2d →
The state changes from Fig. 2c to Fig. 2a, and then the cassette half 4 is pulled out with a finger. In this state, the protrusion 34 comes into contact with the other end of the claw member 9 again and rotates the claw member 9 counterclockwise, so that one end of the claw member 9 locks the protrusion 64 and rotates the lever. A dynamic suppression effect is again achieved.

Although a spring member is disclosed as the cover drive mechanism, any suitable drive means such as a motor may be used.
Further, the number of intermediate gears may be selected as required, and various configurations may be adopted depending on the purpose, such as the protrusion being integrally formed with the drive lever.

[Effects of the invention] According to the invention described above, the cassette holder is moved only by the rotation of the cover using the projections, claws, and rotation control member of the cover, so that the position of the cassette holder can be adjusted when inserting a cassette half. This made it possible to reliably open the protective cover as the cassette half entered.

[Brief explanation of the drawing]

Fig. 1a is a perspective view of the cassette holder of the R-DAT device according to the embodiment of the invention, Fig. 1b is a perspective view of the support and drive mechanism of the R-DAT device according to the embodiment of the invention, and Figs. 2a to 2d. The figures are side views of essential parts explaining the operation of the R-DAT device according to the embodiment of this invention, Figures 3a and 3b are side views explaining the opening and closing operations of the protective cover of the cassette half, and Figure 4 is a side view of the cassette half. FIG. 4...Cassette half, 1...Cassette holder, 2...Holder support, 6...Drive lever,
63... Lever rotation control member, 9... Claw member, 3
4...Protrusion, 5...Driving member, 7...Driving force transmission mechanism.

Claims (1)

[Scope of utility model registration request] A cassette holder 1 that accommodates and supports a cassette half 4, a holder support 2 that supports the cassette holder 1 so that it can be moved horizontally and subsequently vertically, and a cassette holder 1 that allows the cassette holder 1 to be moved horizontally and vertically. a drive lever 6 that engages with and is rotatably attached to the holder support 2; a lever rotation control member 63 formed on the rotation lever; and a lever rotation control member 63 formed on the rotation lever;
a claw member 9 whose one end engages with the drive lever 6 to suppress rotation of the drive lever 6; and a radial protrusion that is rotatably attached to the holder support 2 and engages with the other end of the claw member 9. 34, a drive member 5 for rotating the cover 3, and a drive force transmission mechanism 7 for rotating the drive lever 6 in response to the rotation of the cover 3. The engagement between the protrusion 34 and the other end of the claw member 9 is released by the rotation of the rotation control member 63 .
The R-DAT device is characterized in that the engagement between one end of the claw member 9 is released and the subsequent rotation of the cover 3 causes the drive lever 6 to start rotating.