JPH0753163Y2 - Cassette holding mechanism in cassette holder of magnetic recording / reproducing apparatus - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial field of application] The present invention relates to a rotary magnetic head type magnetic recording / reproducing apparatus for a DAT, etc., and in particular, the cassette can be inserted and ejected smoothly, and a sufficient push at the play position is possible. The present invention relates to a cassette holding mechanism in a cassette holder that can obtain pressure.

[Prior Art] A magnetic tape of a rotary magnetic head type magnetic recording / reproducing apparatus such as a DAT is housed in a cassette, and the cassette is closed by a lid or a slider.

To reproduce the magnetic tape, cassette loading is performed in which the cassette is mounted at a predetermined position while opening the lid and slider.

Cassette loading is performed while the cassette is held in the cassette holder.

Third example of conventional cassette holder and its supporting mechanism
Shown in FIGS.

As shown in detail in FIGS. 3 and 4, leaf springs 2, 2 are fastened to the upper portion of a cassette holder 1 for holding a cassette with screws, a front portion of the leaf spring 2 is bent, and a roller portion is provided at a rear portion thereof. 6 is attached.

On the side of the cassette holder 1, the guide groove 4 of the slider 4
The holder pins 3 are fixed by inserting a, 4a ... And the guide grooves 5a, 5a.

The slider 4 is slidably supported on the chassis 5 and is horizontally reciprocally driven by a drive mechanism (not shown).

A cassette retraction mechanism for pushing the cassette into the cassette holder 1 is not shown.

In the above structure, when the cassette 7 is inserted from the front of the cassette holder 1 by the cassette retracting mechanism as shown in FIG. 5A, the slider 4 is driven backward,
The cassette holder 1 is guided by the guide grooves 5a, 5a ... And moved downward.

FIG. 5 (b) shows the middle of the downward movement of the cassette holder 1. When the cassette holder 1 is further moved from this state to the position shown in FIG. 5 (c), the leaf springs 2, 2 bend and the cassette 7 Is pressed against the positioning pins 8 and 8, and the cassette is accurately positioned and mounted in the play position.

[Problems to be Solved by the Invention] In the conventional device described above, as shown in FIG. 5 (c), the roller 6 presses the central portions of the positioning pins 8 and 8, and the position of the cassette 7 is increased. The pressing force against the fixing pins 8 and 8 is obtained from the pressing force of the roller 6.

On the other hand, since the roller 6 is located at the tip of the leaf spring 2 and the distance from the supporting portion of the leaf spring 6 to the roller 6 is long, a large pressing force of the leaf spring 6 cannot be obtained and it is difficult to stabilize the position of the cassette 7. There was a flaw.

Further, if the rigidity of the leaf spring is increased, the pressing force against the cassette increases, but there is a problem that the frictional resistance with the bent portion of the leaf spring increases when the cassette is inserted.

The present invention was made in view of the above points,
It is an object of the present invention to provide a cassette pressing mechanism in a cassette holder that has a small frictional resistance at the time of inserting and ejecting a cassette and can obtain a sufficient pressing force at a play position.

[Means for Solving the Problems] A cassette pressing mechanism in a cassette holder of a magnetic recording / reproducing apparatus of the present invention has leaf springs fixed to the upper left and right sides of a cassette holder for holding a cassette and transferring it to a play position. A roller is attached to the front end of the cassette insertion side, the rear of the leaf spring is bent, and the cassette is pressed by the roller and the leaf spring bent portion.

[Operation] According to the cassette holder in the cassette loading device of the magnetic recording / reproducing apparatus of the present invention, the bent portion of the leaf spring presses the intermediate portion of the positioning pin, and the pressure contact force of the cassette to the positioning pin is the leaf spring. Obtained from the pressing force of
Since the distance from the point of application of the force of the leaf spring to the supporting portion is small, the rigidity is large and sufficient pressing force can be obtained against the cassette.

Further, since the insertion port of the cassette holder is pressed by the roller, the frictional resistance at the time of inserting and ejecting the cassette is reduced.

[Embodiment] An embodiment of the present invention will be described with reference to FIGS. 1 and 2.

FIG. 1 is a perspective view showing an embodiment.

As shown in the figure, the roller 6 is attached to the tip of the leaf spring 2, and the rear portion of the leaf spring 2 is bent.

Other configurations are similar to those shown in the conventional example.

In the above structure, the roller 6 guides the cassette when the cassette is inserted from the front of the cassette holder 1 by the cassette retracting mechanism as shown in FIG.

FIG. 2 (b) shows the middle of the downward movement of the cassette holder 1. When the cassette holder 1 is further moved from this state to the position shown in FIG. 2 (c), the leaf springs 2, 2 bend and the cassette 7 Is pressed against the positioning pins 8 and 8, and the cassette is accurately positioned and mounted in the play position.

As shown in FIG. 2 (c), the bent portion of the leaf spring 2 presses the central portions of the positioning pins 8 and 8, and the pressure contact force of the cassette 7 with respect to the positioning pins 8 and 8 is the leaf spring 2. Since the distance from the supporting portion to the point of action is small, sufficient pressing force can be obtained.

[Advantage of the Invention] According to the cassette pressing mechanism of the cassette holder of the present invention, the cassette can be smoothly inserted into and discharged from the cassette holder without resistance, and a sufficient pressing force can be obtained when the cassette is mounted in the play position.

[Brief description of drawings]

FIG. 1 is a perspective view showing a cassette pressing mechanism in a cassette holder of the magnetic recording / reproducing apparatus according to this embodiment, and FIG.
(A), (b) and (c) are side views showing the operation of the cassette pressing mechanism, and FIG. 3 is a perspective view showing an example of the cassette pressing mechanism in the cassette holder of the conventional magnetic recording / reproducing apparatus. Is a perspective view showing a portion of the cassette pressing mechanism, and FIGS. 5 (a), (b) and (c) are side views showing the operation of the cassette pressing mechanism. 1 ... Cassette holder, 2 ... Leaf spring, 3 ... Holder pin, 4 ... Slider, 4a ... Guide groove, 5 ... Chassis, 5a ...
Guide groove, 6 ... Roller, 7 ... Cassette, 8 ... Positioning pin.

Continuation of front page (72) Creator Masahiro Nakamura 2-2-1 Tamagawa, Ota-ku, Tokyo Kenwood Co., Ltd. (56) References: Kaihei 3-37644 (JP, U)

Claims (1)

[Scope of utility model registration request] 1. A leaf spring is fixed to the upper left and right of a cassette holder for holding a cassette and transferring it to a play position, a roller is attached to the front end of the leaf spring on the cassette insertion side, and the rear portion of the leaf spring is bent, A cassette pressing mechanism in a cassette holder of a magnetic recording / reproducing apparatus configured to press a cassette by a roller and a leaf spring bent portion.