JPS6213256Y2 - - Google Patents

Description

[Detailed description of the invention] The invention relates to an automatic tape cassette playing device.
In particular, the present invention relates to an automatic tape cassette performance device that positions and holds a plurality of cassettes in a predetermined position of a performance drive mechanism for recording or reproducing by placing a plurality of cassettes in a cassette storage body and dropping a selected one. .

A tape cassette positioning mechanism in a conventional tape cassette automatic performance device has generally been constructed as shown in FIG.

That is, a guide rail 2 is fixed to the top plate 1 of the casing of the automatic tape cassette playing device, and a cassette storage body 4 in which a plurality of cassettes 3 can be installed is slidably disposed along the guard rail. The storage body is frame-shaped and has no top or bottom surface, and cassette clamping pieces 4a, 4a are provided in the left and right side walls, and the cassette 3 is clamped by these.The thickness and length of the cassette 3 are Through hole 1a is approximately equal to
is drilled, and the cassette 3 is lowered and guided through the through hole into the cassette guide 5, and at this time, the arm 7, which is rotatably pivoted to the mounting bracket 6 attached to the lower surface of the upper surface plate 1, The tape running exposed surface of the cassette 3 placed on the roller 8 attached to the tip of the arm 7 rotates in the direction of arrow A around the rotation point of the arm 7, and is properly locked at the recording/playback position. A recording/reproducing mechanism 9 including a reel shaft and a group of heads engages with the reel and is configured to move in parallel in the direction of arrow B to perform recording or reproduction.

When using the cassette guide 5 having such a configuration,
Since the cassette position is determined by the guide 5, there is a drawback that the relative relationship between the guide 5 and the recording/reproducing mechanism 9 and the precision in manufacturing the guide 5 itself must be improved.

The present invention seeks to provide a cassette positioning mechanism that eliminates the drawbacks mentioned above.

The details of the present invention will be explained below with reference to FIGS. 2 and 3.

Although the configuration of the same parts as in FIG. 1 is omitted, the cassette is transported laterally in the direction of arrow C-C' by the cassette storage body, and is lowered or raised through the through hole 1a of the top plate 1 of the casing, and then moved in the direction of arrow D- The cassette 3 that has been lowered in the direction D' is guided by the guide body 5, but the guide body 5
There is a sufficient gap g, g between the width of the cassette 3 and the thickness direction of the cassette 3, and cassette positioning pins 10, 10 are installed on the base plate of the recording/reproducing mechanism 9 on which the magnetic recording/reproducing device is mounted. , the recording/reproducing mechanism 9 moves horizontally in the B direction as in FIG.

On the other hand, on the opposite side from the recording/reproducing mechanism, there is a lever 12 rotatably mounted around a shaft 11, and the tip of the lever extends from the front and rear sides of the guide body 5 (in the direction of the plane of the paper in FIG. 2). A protrusion 12a is provided on the base plate side of the recording/reproducing mechanism 9, and a two-plate cut piece 12 is provided at the other end.
Insert the pin 13 into the hole drilled between b and 12c,
A spring 15 is inserted through the retainer 14.

When the recording/reproducing mechanism 9 moves in parallel in direction B and stops, the tip 12a of the lever 12 comes into contact with the base plate of the recording/reproducing mechanism 9 as shown in FIG. As it rotates clockwise, the pin 13 hits the side wall of the cassette 3 and the spring 15 is compressed, and its tension pushes the cassette from the back against the pressure of the positioning pins 10, 10, and the magnetic recording/reproducing mechanism 9
The tape and head on the tape exposed surface of the cassette are held in the proper position by cooperating with the pins 10, 10 of the cassette, and at the same time the capstan and the cassette height positioning pin etc. can be reliably inserted into the cassette hole and positioned and held at the playing position of the playing drive mechanism.

As mentioned above, the present invention is equipped with a pressing mechanism that presses the cassette from the back side of the cassette in conjunction with the playing mechanism, so the positioning of the cassette with the playing drive mechanism is reliable, and the positional relationship between the tape and the head is the same as that of the head. It has many practical effects, such as eliminating the need to increase the precision of the guide body, which is determined by the relationship with the performance drive mechanism.

[Brief explanation of drawings]

Fig. 1 shows a cassette transverse feed mechanism showing a part of a conventional tape cassette automatic playing device in cross section, Fig. 2 shows a main part of the cassette positioning mechanism of the present invention, and Fig. 3 shows the cassette in the operating state of Fig. 2. It is a positioning mechanism diagram. Reference numeral 1 designates a housing top plate, 2 a guide rail, 3 a cassette, 4 a cassette storage body, 5 a guide body 9 a magnetic recording/reproducing mechanism, 10 a positioning pin, 12 a lever, and 13 a pin.

Claims (1)

[Scope of utility model registration request] Multiple cassettes are arranged side by side inside the cassette storage body,
The plurality of cassettes are selected and brought to the playing position, and in an automatic tape cassette playing device that plays the cassettes, in conjunction with the movement of the playing drive mechanism to the playing position, the tape cassettes are moved to the playing position and the tape cassettes are moved to the playing position. An automatic tape cassette playing device comprising a pressing mechanism for pressing the cassette from the back side of the cassette and positioning and holding the cassette on a playing drive mechanism.