JPS599384Y2 - Cassette tape holder opening/closing device - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to an opening/closing device for a cassette tape holder.

As a conventional device of this type, there is a Utility Application filed by the applicant in 1973.
No. 1-25144 (cassette holder for tape recorders, etc.) is an example, but this one has a complicated structure, or is the rotation ratio too thick? Since it cannot be removed, the design is difficult.

The present invention has been devised based on the drawbacks of such conventional devices, and one embodiment thereof will be described in detail below with reference to the accompanying drawings.

Fig. 1 is a bottom perspective view of the essential parts of a recording/playback device equipped with the device according to the present invention, and Figs. FIG. 2 is a diagram and a side view.

In these figures, reference numeral 1 denotes the main body of the recording/reproducing device, two support pieces 2 and 3 separated from each other, and supports located outside of these support pieces 2 and 3, each having a screw hole. The protrusions 4 and 5, the support protrusion 6 located inside the support piece 2 and having a screw hole 6a, the retaining protrusion 7 on the support piece 3 side, and the support piece 2 are spaced a little apart from each other on the inside of the support piece 2. Auxiliary support pieces 8 located at certain locations are provided, respectively.

The support piece 2 described above is provided with a support notch 2a and a friction portion 2b, and the support piece 3 is provided with a support notch 3a.

Reference numeral 9 is a holder for detachably supporting the cassette half 10, and arms 9A and 9 are provided on both sides of the holder, respectively, extending rearward.
It has B.

As clearly shown in FIGS. 6 and 7, one arm 9A has a pivot shaft 9a protruding from its outer surface, a recess 9a2' on the outer surface at its tip end, and an arcuate lower edge. 9a
The other arm 9B has a pivot shaft 9b1 protruding from its outer surface and an engagement hole 9bz at the lower end thereof.

The holder 9 constructed in this way has respective pivot shafts 9a,
9b1 is fitted into the support notches 2a, 3a of each of the support pieces 2, 3, and the tips of these respective pivot shafts 9a1, 9b1 are screwed into the support protrusions 4, 5 with screws 11, 12. By being received at -13 and 14, it is pivoted so that it can rotate, that is, open and close.

In this case, the arm 9 of the holder 9
The friction portion 9a2 of A is inserted between the friction portion 2b of the support piece 2 and the auxiliary support piece 8, and is also engaged between the engagement hole 9bz of the arm 9B and the retaining protrusion 7 of the main body 1. The holder 9 itself is always kept in the opening direction (
It is energized in the direction of the arrow ■.

16 is a main part 16a made by bending a single elastic metal plate and having a recess 16a1 on the inner surface of the plate; and this main part 16.
A resilient part 16 b formed at the lower end of a, and a main part 16
Mounting piece portion 16 C that protrudes horizontally outward from the front edge of a.
It is an elastic support plate shaped in a certain manner, and in a state where the friction portion 9a2 of the arm 9A is inserted between the support piece 2 and the auxiliary support piece 8, its main portion 16a is It is inserted between the frictional part 9a2 of the arm 9A and the auxiliary support piece 8, and the elastic support part 16b is fitted into the lower end of the support piece 2 and the frictional part 9az, and the attachment piece 16C is attached to the support protrusion 6. The friction portion 9az is provided with a hole so as to hold the friction portion 9az under pressure by tightening the screw 17.

The present invention is constructed as described above, but it must be added here that a high-quality oil such as grease is filled in the recesses 9a2' and 16a1, respectively, so that the friction portion 9a2 and , the frictional force between the frictional portion 2b and the main portion 16a1 is increased, and the rotation of the frictional portion 9a2 is made smooth.

Now, regarding the device of the present invention constructed as described above,
The effect will be explained below.

FIG. 1 shows that the holder 9 is horizontal to the main body 1 and in a closed state. In this case, when the holder 9 is unlocked by the locking mechanism (not shown), the return spring 15 Under this action, the holder 9 rotates and opens in the direction of the arrow 3 using the pivot shafts 9a and 9b1 as fulcrums.

(See Fig. 5) During this period, the rotational movement of the frictional part 9a2 of the arm 9A is resisted by the clamping pressure from the frictional part 2b of the support piece 2 and the holding plate 16, and the viscosity of the oil O. It is done relatively slowly and smoothly.

Also, in order to close the holder 9 contrary to this opening operation,
When the holder 9 is pushed by hand in the opposite direction of the arrow (2), the holder 9 is rotated and closed against the return force of the return spring 15, the clamping pressure, and the viscosity.

As described above, the present invention has a cassette holder pivoted to open and close by arms provided on both sides of the cassette holder, and a fan-shaped friction part is provided at the tip of one of the arms, and the friction part is used for recording and playback. To provide an opening/closing device for a cassette holder, which is clamped and held by a supporting piece and a holding plate provided on the main body of the device, and a highly viscous oil is inserted between these supporting pieces and holding plate and the friction part. Because it is a cassette holder, it is possible to obtain a large rotation ratio, and the friction part of the arm is held under pressure by the support piece and the holding plate, and the lubricant is inserted, so despite the simple structure, when the cassette holder is opened, Sufficient braking force can be obtained for the rotation of the cassette holder, and since the surfaces in contact with the friction part are the flat surfaces of the support piece and the holding plate, the cassette holder can be rotated smoothly and silently. can be set.

[Brief explanation of drawings]

Fig. 1 is a bottom perspective view of essential parts of a recording/playback device equipped with a device according to the present invention, and Figs. 2 to 4 are a bottom view, rear view, and FIG. 5 is a side view of the main part showing when the holder is opened, and FIGS. 6 and 7 are a sectional view and an exploded perspective view of the main part in FIG. 1. 1...Body, 9...Holder, O...
...Oil agent.

Claims (1)

[Scope of utility model registration request] A cassette holder is pivotally supported by arms provided on both sides of the cassette holder so that it can be opened and closed, and a fan-shaped friction part is provided at the tip of one of the arms, and the friction part is supported on the main body of the recording/playback device. It is held with clamping pressure by the piece and the holding plate, and
An opening/closing device for a cassette holder, characterized in that a highly viscous oil is inserted between the support piece and the holding plate and the friction portion.