JPS62180556A - Cassette holder - Google Patents

Abstract

PURPOSE:To surely close a sliding cover at the time of a tape cassette is taken out by providing a sliding cover lock releasing projection made of highly elastic body such as rubber or high frictional body on the bottom plate of a holder. CONSTITUTION:A sliding cover lock releasing projection 13 is made of highly elastic material or high frictional material and fitted to the bottom plate 11 of a holder. Thereby, besides proper function of releasing of locking at two positions of open and close of the sliding cover 3, locking holding force of the sliding cover 3 in the cassette holder is made larger by elastic deformation and frictional locking in a sliding cover lock releasing projection guide groove 6, and closing of the sliding cover at the time of taking out a cassette can be made sure.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a cassette holder for a cassette recorder using a digital audio tape cassette, which has been proposed by Kurabashi.

Conventional technology The newly proposed tape cassette has a rotating lid that opens and closes the front opening, and a sliding lid that opens and closes the bottom opening, to prevent dirt and dust that can interfere with high-density recording from being removed from the tape. Prevents wear and tear. The sliding lid is locked in both open and closed positions, but is always biased by a spring in the closing direction.

Problems to be Solved by the Invention However, there are some cases in which the cassette cannot be smoothly returned to the closed direction as it is used due to warping or deformation of the cassette components, fatigue of the springs, or the like. When such a tape cassette is used, there is a problem in that the sliding lid is not completely closed when the tape cassette is taken out, which is not desirable in terms of protecting the tape.

In view of the above problems, the present invention provides a cassette holder whose sliding lid is always closed when a tape cassette is taken out from the cassette holder.

Means for Solving the Problems In order to solve the above problems, the cassette holder of the present invention is provided with a sliding lid lock release protrusion made of a highly elastic material such as rubber or a high friction material on the holder bottom plate. It has a configuration.

Operation The present invention has the above-described configuration, in addition to the original function of releasing the lock at the opening/closing position of the sliding lid, it also prevents elastic deformation and frictional engagement within the sliding lid lock release protrusion guide groove. Since both of them have a large force to hold and hold the sliding lid within the cassette holder, it is possible to ensure the closing of the sliding lid when taking out the cassette.

EXAMPLE Hereinafter, a cassette holder according to an example of the present invention will be described with reference to the drawings.

FIG. 9 is a top perspective view of the proposed tape cassette. 1 is the cassette body, 2 is a rotating lid that opens and closes by rotating the front opening, and 3 is a sliding lid that opens and closes the opening provided on the bottom of the cassette body. A sliding lid that opens and closes and is locked in two open and closed positions and is always biased by a spring in the closing direction. Reference numeral 4 denotes a notch provided at the lower edge of the rotating lid 2, into which the front edge of the sliding lid 3 is seen. 6 is also provided on the lower edge of the rotating lid 2, and communicates with a sliding lid lock release protrusion guide groove provided on the lower surface of the sliding lid 3. Figure 1Q is a bottom perspective view thereof. In the figure, reference numeral 6 denotes a lock release protrusion guide groove, 7 and 8 are locking holes, and 9 is a locking claw provided at the tip of an elastic arm integrally formed with the cassette body 1 on the lower surface of the cassette body 1. , always energized outward. FIG. 11 is a side view showing the sliding lid 39 in the open state of the rotating lid 2, FIG. 12 is a partial side sectional view showing the locking part of the sliding lid 3, and D is the depth of the locking release protrusion guide groove. represents the

FIG. 1 shows the top surface of a cassette holder in a first embodiment of the present invention. In the figure, 10 is a cassette holder, 11 is a holder bottom plate, 12 is a sliding lid opening protrusion,
Reference numeral 13 denotes a sliding lid lock release projection made of a highly elastic or high friction material and fitted onto the holder bottom plate 11. Reference numeral 14 denotes a holder upper plate, and 16 a cassette retainer formed of a leaf spring and attached to the holder upper plate 14 so as to bias the inserted tape cassette downward. Fig. 2 is a side view thereof, and Fig. 3 is a side sectional view showing the installed state of the sliding lid lock release protrusion 13.
3 is a C-shaped sliding lid lock release protrusion, 16 is both of them,
A retaining part provided at the end, 17 is an introduction part provided on the holder bottom plate 11 to make it easy to fit into the hole, and H indicates its height. The height from that surface. Fig. 4 is a front view of the same, Fig. 6 is a front view of the top surface having a circular shape,
Figure 6 shows an uneven surface formed on the top surface to increase the holding force due to elastic deformation and frictional engagement with the bottom surface of the sliding lid lock release protrusion guide groove and the locking hole 7.8 provided on the bottom surface. It is an attempt to do so. FIG. 7 is a side view of another embodiment of the sliding lid lock release projection 13, which is formed into a single letter shape and provided with retaining portions at both ends thereof.

FIG. 8 is a side view showing the attached state.

The operation of the cassette holder configured as described above will be described below with reference to FIGS. 1 and 2.

First, when a tape cassette is inserted through the insertion opening of the cassette holder 1o with its rotating lid facing forward, the locking release projection 1 provided on the holder bottom plate 11 is inserted into the locking projection guide groove 6.
3 enters and pushes up the locking pawl 9 to release the locking of the sliding lid 3 to the closed position. When further inserted, the front edge of the sliding lid 3 is prevented from moving by the sliding amount locking protrusion 12, but the cassette body 1 is inserted until the sliding lid 3 is completely released.
Finish inserting. From this state, the cassette holder 10 and the tape cassette are moved downward substantially perpendicular to the insertion direction and brought to the playing position. In the playing position, the tape cassette is supported by cassette support means (not shown) to maintain it at the correct height and at the same time supported by pivoting lid opening means (not shown).

When taking out the tape cassette after recitation, it is raised from the performance position and brought to the insertion position.

At this position, when pushing out the cassette body or grabbing it to take it out, the sliding lid 3 is released from the open position by the front edge of the unlocking protrusion 13 by a slight retraction of the cassette body 1, and the subsequent cassette body 1, the sliding lid 3 is held in the cassette holder until the sliding lid 3 is completely closed by its own return force and the frictional force of the lock release protrusion 13, or both. . After being completely closed, the sliding lid 3 is taken out together with the cassette body. The biasing force of the cassette presser 16 is to bias the tape cassette in the cassette holder in the direction of the bottom plate 11, thereby holding the tape cassette in the cassette holder, and releasing the locking protrusion 13. It is used to ensure abutting engagement with the opening protrusion 12 and the like, and to generate a locking force by contacting the sliding lid 3 with the unlocking protrusion 13.

As described above, according to this embodiment, the holder bottom plate is made of a soft elastic material such as rubber or a high friction material, and the height from the tape cassette support surface of the holder bottom surface is adjusted to the guide groove of the unlocking protrusion of the sliding lid. By providing a sliding lid locking release protrusion that is higher than the depth of the sliding lid, it is not only possible to release the locking of the sliding lid reliably, but also
It is possible to securely close the cassette when taking it out.

FIG. 6 is a side view showing the attached state of the sliding lid lock release protrusion of the cassette holder showing the second embodiment of the present invention.

As shown in the figure, providing unevenness on the upper surface improves the frictional force and ensures secure engagement with the unlocking groove, locking hole, etc. due to elastic deformation. FIG. 7 is a side view showing a third embodiment of the unlocking protrusion of the cassette holder according to the present invention;
FIG. 8 shows its installed state. That is, the unlocking protrusion 13 is I-shaped and becomes C-shaped when attached. Reference numeral 14 indicates a retaining portion, and reference numeral 16 indicates an introduction portion for facilitating insertion into a mounting hole provided in the holder bottom plate 11, which improves assembly workability.

The unlocking protrusion is elastically supported on the holder bottom plate, and the amount of protrusion from the support surface on the bottom plate is made large so that the unlocking protrusion makes contact with the guide groove of the inserted tape cassette. It is also possible to ensure that Furthermore, the unevenness shown in FIG. 6 can be made to be a gentle slope in the tape cassette insertion direction and a steep slope in the tape cassette removal direction to ensure more secure locking when taking out the tape cassette. . Furthermore, if the bottom surface of the unlocking protrusion guide groove is also provided with concavities and convexities at equal pitches, it will be more reliable.

Effects of the Invention As described above, the present invention eliminates a soft elastic body such as rubber or a high friction body on the bottom of the holder, and increases the height from the tape cassette support surface of the bottom of the holder to the guide groove for the unlocking protrusion of the sliding lid. By providing the sliding lid locking release protrusion which is higher than the depth of the cassette, it is possible not only to release the locking of the sliding lid reliably, but also to securely close the sliding lid when taking out the cassette. In addition, by forming the sliding lid lock release protrusion in a C-shape or I-shape, and providing an introduction part during assembly and a stopper part at both ends, assembly work efficiency is improved and there is no risk of the lid falling off. This ensures reliable operation.

[Brief explanation of drawings]

FIG. 1 is a top view of a cassette holder according to a first embodiment of the present invention, FIG. 2 is a side view thereof, FIG. 3 is a side view showing the state in which the unlocking protrusion is attached, and FIG. 4 is a front view of the cassette holder. FIG. 6 is a front view showing another embodiment of the front shape, FIG. 6 is a side view showing the attachment state of the unlocking protrusion of the cassette holder in the second embodiment of the present invention, and FIG. 8 is a side view of an embodiment of the unlocking protrusion of the cassette holder according to the third embodiment of the present invention, FIG. 8 is a side view showing the state in which it is attached, and FIG. 10 is a bottom perspective view of the tape cassette, and FIG. 11 is a side view of the tape cassette with its lid open.
FIG. 12 is a partial side sectional view showing the locked state of the sliding lid. 1...Cassette body, 2-...Rotating lid,
3...Sliding lid, 6...Sliding lid lock release protrusion guide groove, 7, 8...Latching hole, 9...
・Latching claw, 10...Cassette holder, 11...
...Holder bottom plate, 13...Sliding lid lock release protrusion, 15...Cassette holder.

Claims (4)

[Claims] (1) A sliding lid that is made of a soft elastic material such as rubber or a high friction material on the bottom of the holder, and the height of the bottom of the holder from the tape cassette support surface is higher than the depth of the unlocking protrusion guide groove of the sliding lid. A cassette holder characterized by having a lock release protrusion. (2) The cassette holder according to claim 1, wherein the sliding lid lock release projection is elastically supported. (3) The cassette holder according to claim 1 or 2, characterized in that an unevenness is provided on the upper surface of the sliding lid lock release protrusion. (4) The C-shape with retaining portions at both ends is formed by fitting an I-shaped sliding lid locking release protrusion into a locking hole provided on the holder bottom plate. Cassette holder described in section.