JPH06101172B2 - Cassette loading device - Google Patents

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cassette loading device provided with a cassette holder that is provided in a frame and moves between a cassette insertion position and a cassette mounting position. [Prior Art] FIGS. 4A to 4D are operation explanatory views showing respective usage modes of a digital audio tape recorder (DAT) as a conventional cassette loading device, and 1 is a cassette in which a magnetic tape is stored. Reference numeral 2 is a cassette holder that accommodates the cassette 1 and moves between a cassette insertion position and a cassette mounting position, 3 is a slide lever that moves by abutting on the tip of the cassette 1, and 4 is a slide lever via a guide pin. A frame for guiding the movement of 3, a capstan motor (not shown), a reel (not shown), etc. on the upper surface 6 A deck base that has been Attach.

Next, the operation of the DAT having the above configuration will be described. In the loading operation of the cassette 1, when the cassette 1 is first inserted into the cassette holder 2, the cassette 1 comes into contact with the tip of the slide lever 3 and is held by the cassette holder 2 (see FIG. 4A).

After that, when the cassette 1 is manually pushed in the direction of the arrow A with a stronger force than when the cassette 1 is inserted, the slide lever 3 is guided by the frame 1 by the cassette 1 and further moved to hit the start switch (not shown). Touch (see Figure 4B).

The cassette holder driving mechanism (not shown) is driven by the operation of the start switch, and the cassette 1 and the cassette holder 2 are integrally moved in the direction of the arrow B, and when reaching a predetermined position, the action of a reversing spring (not shown) , The slide lever 3 moves away from the cassette 1 and is further guided by the frame 4 (see FIG. 4C).

After that, the cassette 1 integrated with the cassette holder 2 moves downward and moves to a predetermined mounting position (see FIG. 4D).

When moving from the mounting position of the cassette 1 shown in FIG. 4D to the insertion position of the cassette 1 shown in FIG. 4A, the cassette 1, the cassette holder 2 and the slide lever 3 operate in the opposite direction to the above.

[Problems to be Solved by the Invention] As described above, in the conventional DAT, the frame 4 that guides the slide lever 3 by the cassette holder 2 when the cassette holder 2 moves between the cassette insertion position and the cassette mounting position. In order to avoid collision with the frame, a clearance dimension H ₁ must be provided between the cassette holder 2 and the frame 4, which increases the height of the device and guides the movement of the slide lever 3. The length of 4 requires at least the movement distance of the slide lever 3, and the depth dimension of the device becomes large accordingly, and there is a problem that the device cannot be downsized.

The present invention has been made in order to solve such a problem, and an object thereof is to obtain a cassette loading device that can be downsized.

[Means for Solving the Problem] A cassette loading device according to the present invention is provided with a slide plate, which is movable between the slide lever and the frame and is movable with respect to the frame and the slide lever, and guides the movement of the slide lever. Is.

[Operation] In the present invention, the slide plate between the frame and the slide lever covers a part of the guide for the slide lever, and the guide distance for guiding the slide lever of the frame is reduced accordingly.

Embodiment An embodiment of the present invention will be described below with reference to the drawings. FIG. 1 is a partially exploded perspective view of a DAT showing an embodiment of the present invention, in which the same or corresponding parts as in FIG. 4 are designated by the same reference numerals, and the description thereof will be omitted.

In the figure, 10 is a frame with a U-shaped cross section attached to the deck base 6, 11 is an L-shaped guide hole formed in the side wall of the frame 10, and 12a and 12b are projecting on both side walls of the cassette holder 2, respectively. Guide pins 12 that move along the guide holes 11, 13 are arm gears that are provided on both outer sides of the frame 10 and rotate around a shaft 14, 15 is formed at the tip of the arm gear 13, and guide pins 12a and 12b penetrate therethrough. A play hole, 16 is a synchronous gear that meshes with the arm gear 13 and drives the arm gear 13,
Reference numeral 17 denotes a synchronous shaft having synchronous gears 16 fixed at both ends and engaged with open grooves 18. Reference numeral 19 is an opener, 20 is a link lever, 21 is a guide pin, and 22 is a first locking portion.

FIG. 2 is an exploded perspective view in which an essential part of FIG. 1 is turned upside down, and 30 is movably attached to the upper surface of the frame 10 (the lower surface of the frame 10 in FIG. 1) via guide pins 31. It is a slide plate. 32 is a slide lever provided on the slide plate 30 and 33 is a slide lever
A guide protrusion that is attached to the lower surface of 32 and moves along slide hole 34 of slide plate 30, and 35 is a slide lever.
An extruding part provided in the front part of 32 and abutting on the cassette 1, 36
Is a second locking portion provided on one side of the slide lever 32 and abutting on the first locking portion 22 of the cassette holder 2. 37
Is a rotating lever rotatably provided on a first post 38 projectingly provided on the frame 10, 39 is a play formed by a pin 40 on the upper surface of the slide lever 32 formed at the tip of the rotating lever 37. One end of the hole 41 is the base end of the rotating lever 37 and the other end is the frame 10.
Reversing springs attached to the second posts 42 on the upper surface of each. Next, regarding the operation of the DAT having the above configuration,
Description will be made with reference to FIGS. 3 to 3D. In the loading operation of the cassette 1, first, when the cassette 1 is inserted into the cassette holder 2, the cassette 1 comes into contact with the push-out portion 35 located at the tip end portion of the slide lever 32 and is held by the cassette holder 2 (see FIG. 3A). .

After that, 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 32 moves together with the cassette 1 while being guided by the guide protrusion 33 loosely inserted in the slide hole 34. Touch the start switch (not shown) (see Figure 3B).

The synchronous gear 16 is rotated by the operation of the start switch, the arm gear 13 meshed with the synchronous gear 16 is rotated, and the guide pin is rotated.
12a and 12b move along the guide hole 11, and the cassette 1 and the cassette holder 2 are integrally moved in the direction of arrow D. The slide lever 32 also moves in the same direction, and along with the movement, the rotation lever 37 is moved through the pin 40 of the slide lever 32.
Rotates in the direction of arrow E, and after the reversing spring 41 exceeds the toggle point, the slide lever 32 is separated from the cassette 1 by the spring force of the reversing spring 41. On the way, the guide protrusion 33 contacts the inner end surface of the slide hole 34, and then the slide lever 32 and the slide plate 30 move integrally (see FIG. 3C).

After that, the cassette 1 integrated with the cassette holder 2 moves downward and moves to a predetermined mounting position (see FIG. 3D).

When moving from the mounting position of the cassette 1 shown in FIG. 3D to the insertion position of the cassette 1 shown in FIG. 3A, the cassette 1, the cassette holder 2, the slide plate 30 and the slide lever 32 move in the opposite direction to the above. Moving. During the movement, the first locking portion 22 of the cassette holder 2 which is moved by the rotation of the arm gear 13 is locked to the second locking portion of the slide lever 32 so that the slide lever 32 moves in the insertion position direction of the cassette 1. When the slide lever 32 moves to the arrow F direction via the pin 40 as the slide lever 32 moves, and the reversing spring 41 exceeds the toggle point, the slide lever 32 causes the slide lever 32 to move by the spring force. 1 is pressed, the cassette 1 reaches the insertion position of the cassette 1 shown in FIG. 3A.

In the above embodiment, the cassette loading device
Although the DAT has been described, it goes without saying that the present invention can be applied to, for example, an apparatus using a cassette containing a magnetic disk or an optical disk. Further, in the above embodiment, the case where one slide plate is interposed between the slide lever and the frame has been described, but a plurality of mutually movable slide plates are interposed between the two.
The guide distance of the slide lever required by the frame may be further reduced.

[Effects of the Invention] As described above, in the cassette loading device of the present invention, since the movable slide plate is provided between the frame and the slide lever, the slide plate partially guides the movement of the slide lever. To cover the
As a result of reducing the guide distance for guiding the slide lever of the frame, the depth dimension of the device is reduced, and, for example, interference between the holder and the frame is prevented and the deck base and the frame can be brought closer to each other. The size is reduced, and the size of the entire apparatus can be reduced. Further, there is an effect that, for example, the deck base is brought closer to the frame side and the spare space below the deck base is used to mount the electric components of the radio on the circuit board to achieve multi-functionality.

[Brief description of drawings]

FIG. 1 is a partially exploded perspective view of a DAT showing an embodiment of the present invention, FIG. 2 is an exploded perspective view of an essential part of FIG. 1, and FIGS.
3D is an operation explanatory view showing a moving state of the cassette holder that moves between the cassette insertion position and the cassette mounting position,
FIGS. 4A to 4D are operation explanatory views showing a moving state of the cassette holder of the conventional DAT that moves between the cassette insertion position and the cassette mounting position. In the figure, 1 is a cassette, 2 is a cassette holder, and 10
Is a frame, 30 is a slide plate, 32 is a slide lever, and 41 is a reversing spring. In each drawing, the same reference numerals indicate the same or corresponding parts.

Claims (1)

[Claims] 1. A cassette holder which is provided in a frame and accommodates a cassette to move between a cassette insertion position and a cassette mounting position, and abuts against the cassette when the cassette holder is in the cassette insertion position. In a cassette loading device provided with a slide lever for urging the cassette holder from the cassette holder, the slide lever is provided between the slide lever and the frame so as to be movable with respect to the frame and the slide lever. A cassette loading device comprising: a slide plate for guiding movement.