JP2797580B2 - Cassette mounting device for magnetic recording / reproducing machine - Google Patents

Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cassette mounting device for a cassette type magnetic recording / reproducing machine such as a video tape recorder.

2. Description of the Related Art In recent years, in magnetic recording / reproducing machines such as video tape recorders, it has become common to handle magnetic tapes in cassettes. Have been.

Hereinafter, an example of a conventional cassette mounting device will be described with reference to the drawings.

FIG. 4 is an exploded perspective view showing a conventional cassette mounting device,
5 (a) to 5 (c) are partial operation diagrams, and FIG. 6 is a partial correlation diagram between the cassette and the mounting device. As shown in the figure, a holder 2 for holding a magnetic tape cassette (hereinafter abbreviated as a cassette) 1 has a cassette insertion position and a cassette operation position where the cassette 1 is fixed on positioning pins 4a and 4b implanted on a chassis 3. It can be slidably slidable between. The cut-and-raised portions 5a and 5b serving as two cassette positioning members provided on the holder 2 are such that the cut-and-raised portion 5a on the supply reel side at the end of the holder 2 on the cassette insertion direction side is more predetermined than the cut-and-raised portion 5b on the take-up reel base. It is located on the side of arrow A direction (cassette insertion direction) of the cassette moving direction by the dimension. For this reason, as shown in FIG. 6, the cassette 1 is cut and raised, and the side near 5a is inclined and leads.

The reason will be described with reference to FIGS. 7 (a) to 7 (f). FIGS. 7 (a) to 7 (c) show a case where the cut-and-raised portions 5a and 5b of the holder 2 are installed in parallel at the same size in the direction of arrow A in the cassette insertion direction.

Since the holder 2 is made slightly larger in consideration of the dimensional tolerance with respect to the cassette 1, when the cassette 1 is inserted, the holder 2 is inclined by ± θ at most with respect to the direction of arrow A. In this case, when the right side of the cassette 1 is inclined and inserted so as to hit the cut-and-raised 5b first (FIG. 7a), the cassette cover release lever 15 on the mounting device side with respect to the front cover lock pin 14 of the cassette 1
When the cassette 1 is inserted vertically without tilting (FIG. 7c), the front cover 1 'of the cassette 1
The cassette lid release lever 15 does not come into contact with the front lid lock pin 14 when tilted in the opposite direction (FIG. 7b).

FIGS. 7 (d) to 7 (f) show that the cut-and-raised position of the cassette is located in the direction of the arrow A in the cassette moving direction by a predetermined distance from the cut-and-raised portion 5b on the supply reel table side to the cut-and-raised side 5b on the take-up reel table side. Indicates that In this case, the cassette 1 can be inserted into the cassette holder 2 with the right side forward (FIG. 7d) or the left side forward (FIG. 7e) with respect to the cassette holder 2, as shown in FIG. Even if inserted vertically (No. 7
7 (f), the front end of the cassette 1 always comes into contact with the cutout 5b, so that the cassette lid release lever 15 does not abut on the front lid lock pin 14 as shown in FIG. 7 (b).

On both sides of the holder 2 there are implanted shafts 6 which are inserted through L-shaped guide grooves 8 formed in side plates 7 arranged outside the both sides of the holder 2 and other driving It is also inserted into a long groove 10 formed in an arm 9 which is a driving means driven by a force (not shown).

Next, the operation of the conventional cassette mounting apparatus configured as described above will be described. When the cassette 1 is inserted into the holder 2 from the insertion position, the cassette 1 is moved to the sixth position.
As shown in the figure, the arm 9 is restricted by being brought into contact with the cut-and-raised portions 5a and 5b of the holder and pushed in the direction of arrow A.
Turns in the direction of arrow A to turn on a switch (not shown) for applying a driving force, and is driven by the arm 9 to move the cassette 1 from the insertion position to the cassette operating position.

SUMMARY OF THE INVENTION However, in the above configuration, the supply side of the cassette 1 in the holder 2 is in the cassette insertion direction as compared with the take-up side in the holder 2 as shown in FIG. As shown in FIG. 5 (a) to FIG. 5 (c), the positioning pin 11 corresponds to the positioning pin 4a implanted on the chassis 3 among the positioning holes 11 of the cassette as shown in FIGS. The insertion side is not completely inserted by the pin 4 and the cassette 1 is not completely mounted at the cassette operation position.

In view of the above problems, the present invention provides a means for securely mounting a cassette in a correct position in the course of mounting a cassette.

Means for Solving the Problems In order to solve the above problems, the cassette mounting device of the magnetic recording / reproducing apparatus of the present invention is provided with a regulating member integrated with a top plate, for example, on the side where the cassette inclines and leads. In the course of the cassette mounting operation, the front cover of the cassette and the regulating member are brought into contact with each other, and the cassette is pushed back by a predetermined dimension in the cassette insertion direction (arrow A) so that the cassette can be securely mounted at the cassette operating position. Make up.

According to the present invention, since the position of the cassette is corrected before the cassette operating position by the above-described configuration, the positioning hole is securely inserted through the positioning pin, and the cassette can be securely mounted at the cassette operating position.

An embodiment of the present invention will be described below with reference to the drawings.

FIG. 1 is a perspective view of an embodiment of a cassette mounting apparatus according to the present invention, FIGS. 2 (a) to 2 (c) are views showing the operation of the same parts, and FIG. FIG. In the figure, portions having the same functions as those of the conventional example are denoted by the same reference numerals, and description thereof is omitted.

As shown in the drawing, a regulation plate 13 as a regulation member is installed integrally with the top plate 12 on the side where the cassette of the top plate 12 is inclined and leads.

The operation of the cassette mounting apparatus of the present invention configured as described above will be described. When the cassette 1 is inserted into the holder 2 from the insertion position, the cassette 1 is first raised and cut 5a as shown in FIG. , 5b, the arm 9 is rotated in the direction of arrow A by being pushed in the direction A, a switch (not shown) for applying a driving force is turned on, and the cassette 1 is driven by the arm 9 to be driven. Moves from the insertion position to the cassette operation position.

Then, as shown in FIGS. 2 (a) and 2 (b), the front lid 1 'on the supply reel side which is inclined ahead of the cassette 1 during the cassette mounting operation as shown in FIG. 2 (c). Regulation plate
13, the cassette 1 is pushed back by a predetermined size in the direction of arrow B, and is held by the holder 2 with the cassette 1 and the cut-and-raised portion 5 a of the holder 2 separated as shown in FIG. Thereafter, the positioning holes 11 of the cassette 1 are inserted through the positioning pins 4, and the cassette 1 is mounted at the cassette operating position.

In the embodiment, the regulating plate 13 is illustrated as being integrated with the top plate 12, but another component may be attached to the top plate.
Alternatively, it may be attached to the side plate 7 or the like.

As is clear from the above description of the embodiment, according to the present invention, since the position of the cassette inserted at an angle is regulated and corrected in the course of the mounting operation, the cassette can be securely mounted. The effect that can be obtained can be obtained.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is an exploded perspective view showing an embodiment of a cassette mounting apparatus according to the present invention, and FIGS. 2 (a) to 2 (c) are side views of essential parts for explaining the operation of the apparatus. FIG. 3 is a partial correlation diagram showing a positional relationship between the cassette and the mounting device in the embodiment, FIG. 4 is an exploded perspective view showing a conventional cassette mounting device, and FIGS. 5 (a) to (c) are the same. FIGS. 6 and 7 (a) to (f) are partial correlation diagrams showing the positional relationship between the cassette and the mounting device in the conventional example. 1 ... cassette, 1 '... front lid of cassette 1, 2 ... holder, 4 ... positioning pins, 5a-5b ... cut and raise,
11 ... positioning holes, 13 ... regulating plate.

Claims (1)

(57) [Claims] A holder for guiding and holding a cassette, a moving means for automatically moving the holder from a cassette insertion position to a cassette operation position, and abutting on a front end of the cassette to regulate a position in a cassette insertion direction. For this purpose, two cassette positioning members are provided at the ends of the holder in the cassette insertion direction and near both ends in a direction perpendicular to the cassette insertion direction, one of which is located closer to the cassette insertion direction than the other; A cassette mounting device for a magnetic recording / reproducing machine, comprising: a regulating member fixed to a position on the cassette positioning member side and abutting on a front cover of the cassette during the operation of mounting the cassette, and regulating a position of the cassette in the insertion direction.