JP2573688B2 - Cassette loading device - Google Patents

Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cassette loading device including a cassette holder provided in a frame, which accommodates a cassette and moves between a cassette insertion position and a cassette mounting position. Things.

[Prior Art] FIG. 5 is an exploded perspective view of a digital audio tape recorder (DAT) as a cassette loading apparatus to which the present applicant has already filed, 1 cassette magnetic tape is accommodated, 1 _a cassette Cassette 1 at the front corner of
A cassette holder 2 for storing the cassette 1 and moving between a cassette insertion position and a cassette mounting position, and a taper portion 3 formed for discriminating the up / down and front / rear directions. The slide lever 4 is a U-shaped frame provided outside the slide lever.
Is an L-shaped guide hole formed in the side wall of the frame 4;
a and 12b are guide pins projecting from both side walls of the cassette holder 2 and moving along the guide holes 11, 13 are arm gears provided on both outer sides of the frame 4 and rotating about a shaft 14, and 15 are arm gears 13. Formed at the tip of the guide pin 12
a and 12b are through holes, 16 is a synchronous gear meshing with the arm gear 13 and driving the arm gear 13, and 17 is a synchronous gear 16 at both ends.
Is a synchronous shaft fixed and engaged with the open groove 18. Note that 19
Is opener, 20 is link lever, 21 is guide pin, 22
Is a first locking portion.

FIG. 6 is an exploded perspective view in which the main part of FIG. 5 is turned upside down. Reference numeral 30 denotes a slide lever which is movably attached to the upper surface of the frame 4 (the lower surface of the frame 4 in FIG. 5) via a guide pin 31. 3 is a slide plate having a stacked plate hole 43 and a slide hole 34; 33 is a guide projection attached to the lower surface of the slide lever 3 and moved along the slide hole 34 of the slide plate 30; The extruding portion provided in the cassette 1 and abutting on the cassette 1, 36
Is a second locking portion provided on one side of the slide lever 3 and abutting on the first locking portion 22 of the cassette holder 2.

Reference numeral 37 denotes a rotation lever rotatably provided on a first post 38 protruding from the frame 4. Reference numeral 39 denotes a rotation lever 37 formed at the tip of the rotation lever 37, and a pin 40 on the upper surface of the slide lever 3 penetrates. The play hole 41 is a reversing spring having one end attached to the base end of the rotating lever 37 and the other end attached to the second post 42 on the upper surface of the frame 4.

Next, FIG. 7A to FIG.
Explanation will be made based on the D diagram. In the loading operation of the cassette 1, when the cassette 1 is first inserted into the cassette holder 2, the cassette 1 abuts on the extruding portion 35 located at the tip of the slide lever 3 and is held by the cassette holder 2 (see FIG. 7A). .

Thereafter, when the cassette 1 is manually pushed in the direction of arrow C with a stronger force than when the cassette 1 is inserted, the slide lever 3 moves together with the cassette 1 while being guided by the guide projections 33 loosely inserted into the slide holes 34. Contact a start switch (not shown) (see FIG. 7B).

The synchronous gear 16 rotates by the operation of the start switch,
The arm gear 13 meshed with the synchronous gear 16 rotates, the guide pins 12a and 12b move along the guide hole 11, and the cassette 1 and the cassette holder 2 move in the direction of arrow D integrally. The slide lever 3 also moves in the same direction as the cassette holder 2, and with the movement, the rotation lever 37 rotates in the direction of arrow E via the pin 40 of the slide lever 3, and after the reversing spring 41 exceeds the toggle point, The slide lever 3 is separated from the cassette 1 by the spring force of the reversing spring 41. On the way, the guide projection 33 comes into contact with the inner end surface of the slide hole 34, and thereafter, the slide lever 3 and the slide plate 30 move integrally (see FIG. 7C).

Thereafter, the cassette 1 integrated with the cassette holder 2 moves down and moves to a predetermined mounting position (see FIG. 7D).

When moving from the mounting position of the cassette 1 shown in FIG. 7D to the insertion position of the cassette 1 shown in FIG. 7A, the cassette 1, the cassette holder 2, the slide plate 30, and the slide lever 3 are moved in the opposite direction to the above. Moving.
During the movement, the first locking portion 22 of the cassette holder 2 that moves by the rotation of the arm gear 13
And the slide lever 3 is pushed out in the direction of the insertion position of the cassette 1, and with the movement of the slide lever 3, the rotation lever 37 rotates in the direction of arrow F via the pin 40. , After the reversing spring 41 exceeds the toggle point
The slide lever 3 pushes the cassette 1 by the spring force of 41, and the cassette 1 reaches the insertion position of the cassette 1 shown in FIG. 7A.

[Problems to be Solved by the Invention] In the conventional DAT as described above, the slide plate 30 covers a part of the guide for the slide lever 3, and the guide distance for guiding the slide lever 3 of the frame 4 is reduced accordingly. For example, the deck base 6 can be brought closer to the frame 4 and the size of the apparatus can be reduced. However, in this case, when the slide lever 3 is separated from the cassette 1 by the spring force of the reversing spring 41, the guide projection 33
Abuts against the inner end surface of the slide hole 34, and thereafter, the slide lever 3 and the slide plate 30 move integrally, so that the cassette 1 is placed on the slide plate 30 during the movement of the slide lever 3. At this time, the slide plate 30 rides on the upper surface of the cassette 1 from the tapered portion 1a of the cassette 1 as shown in FIG. 8 and FIG. However, there is a problem that a locked state may be caused between the cassette 1 and the slide plate 30 and a normal cassette loading operation may not be performed.

The present invention has been made to solve such a problem, and an object of the present invention is to provide a cassette loading device that performs a normal cassette loading operation in which interference with a cassette slide plate is prevented.

[Means for Solving the Problems] In the cassette loading device according to the present invention, an elastic locking portion for elastically holding the slide plate when the cassette moves from the cassette insertion position to the cassette mounting position and retreats is provided on the slide lever. It is provided.

[Operation] According to the present invention, the slide lever is provided with an elastic locking portion for elastically holding the slide plate when the slide lever is moved backward from the cassette insertion position to the cassette mounting position, so that the cassette and the slide plate can be connected to each other. Interference is prevented.

Hereinafter, an embodiment of the present invention will be described with reference to the drawings. First
FIG. 1 is a plan view of a slide lever of a DAT showing an embodiment of the present invention. The same or corresponding parts as those in FIGS. 5 to 9 are denoted by the same reference numerals, and description thereof will be omitted.

In FIG. 1 in which the positional relationship between the slide lever 3 and the cassette 1 corresponds to FIG.
This is an elastic locking portion provided on the cassette insertion side.

In the operation of the DAT thus configured, when the cassette 1 is first inserted into the cassette holder 2, the cassette 1
Abuts on the extruding portion 35 located at the tip of the slide lever 3 and is held by the cassette holder 2 (see FIG. 1 corresponding to FIG. 7A).

Thereafter, when the cassette 1 is manually pushed in with a stronger force than when the cassette 1 is inserted, the slide lever 3 moves together with the cassette 1 while being guided by the guide projection 33 loosely inserted into the slide hole 34, and hits the start switch. Touch

The synchronous gear 16 rotates by the operation of the start switch,
The synchronous gear 16 and the overlying arm gear 13 rotate, the guide pins 12a and 12b move along the guide hole 11, and the cassette 1 and the cassette holder 2 advance as one. The slide lever 3 also moves in the same direction, and together with the movement, the rotation lever 37 is moved by the arrow E via the pin 40 of the slide lever 3.
When the reversing spring 41 exceeds the toggle point, the slide lever 3 is separated from the cassette 1 by the spring force of the reversing spring 41, but the elastic locking portion 50 elastically holds the slide plate 30 in the middle thereof (the 3), slide plate
30 is retracted integrally with the slide lever 3.
Then, during the retreat, the guide projection 33 comes into contact with the inner end face of the slide hole, and then the slide plate 30 moves to a position where the guide pin 31 comes into contact with the tip end face of the plate hole 43 of the slide plate. After that, the slide lever 3 continues to resiliently deform the elastic locking portion 50 while reversing the spring.
It retreats to a predetermined position by the spring force of 41 (see FIG. 4 corresponding to FIG. 7C).

Thereafter, the cassette 1 integrated with the cassette holder 2 moves down and moves to a predetermined mounting position.

When moving from the mounting position of the cassette 1 to the insertion position of the cassette 1, the cassette 1, the cassette holder 2, the slide plate 30, and the slide lever 3 move in the opposite direction as described above.

In the above embodiment, the DAT is described as the cassette loading device. However, the present invention can of course be applied to a device using a cassette containing a magnetic disk and an optical disk. Also, in the above embodiment, a case was described in which one slide plate was interposed between the slide lever and the frame, but a plurality of mutually movable slide plates were interposed between the two, and the slide required by the frame was The guide distance of the lever may be further reduced.

[Effects of the Invention] As described above, in the cassette loading device of the present invention, since the slide lever is provided with the elastic locking portion for elastically holding the slide plate, interference between the cassette and the slide plate is prevented, and There is an effect that a simple cassette loading operation is performed.

[Brief description of the drawings]

FIG. 1 is a plan view showing an embodiment of the present invention, FIG. 2 is a front view of a first slide lever, FIG. 3 is a plan view showing another use mode of the slide lever of FIG. The figure is a plan view showing still another use mode of the slide lever of FIG. 1,
FIG. 5 is a partially exploded perspective view showing an example of a conventional DAT, and FIG.
FIG. 7 is an exploded perspective view of a main part of FIG. 5, FIGS. 7A to 7D are operation explanatory views showing a moving state of a cassette holder moving between a cassette insertion position and a cassette mounting position, and FIG. FIG. 9 is a plan view showing interference between the slide plate and the cassette shown in FIG. 9, and FIG. 9 is a side view of FIG. In the figure, 1 is a cassette, 2 is a cassette holder, 3
Is a slide lever, 4 is a frame, 30 is a slide plate, and 50 is an elastic locking portion. In the drawings, the same reference numerals indicate the same or corresponding parts.

Claims (1)

(57) [Claims] 1. A cassette holder provided in a frame for accommodating a cassette and moving between a cassette insertion position and a cassette mounting position, and contacting the cassette when the cassette holder is at the cassette insertion position. A slide lever for urging the cassette in a direction of pushing the cassette from the cassette holder; and a slide plate provided between the slide lever and the frame so as to be movable with respect to the frame and the slide lever, and for guiding the movement of the slide lever. Cassette loading device, wherein the slide lever is provided with an elastic locking portion for elastically holding the slide plate when the slide lever is moved backward from the cassette insertion position to the cassette mounting position. apparatus.