JP2548125B2 - Tape cassette - Google Patents

Description

Description: FIELD OF THE INVENTION The present invention relates to improvements in digital audio tape cassettes.

2. Description of the Related Art In recent years, digital audio cassette recorders have been developed, and new tape cassettes for them have been proposed.

The newly proposed tape cassette is equipped with a rotating lid that opens and closes the front opening of the cassette body and a sliding lid that opens and closes the bottom opening so that fingerprints, dust, and dust do not attach to the magnetic tape. There is.

An example of the above-mentioned proposed tape cassette and a cassette holder using the same will be described below with reference to the drawings.

FIG. 9 is a top perspective view of the proposed tape cassette, in which 1 is a cassette body, 2 is a rotating lid for rotating and opening the front opening of the cassette body 1, and 3 is an opening on the bottom surface of the cassette body. A sliding lid that slides to open and close and is locked in the open / closed 2 position is always spring-biased in the closing direction. Reference numeral 4 is a notch provided at the lower end of the rotary lid 2, and the front edge of the sliding lid 3 is seen inside the notch. Reference numeral 5 is also a notch provided at the lower end of the rotary lid 2, and communicates with a lock release projection guide groove provided on the lower surface of the sliding lid 3.

FIG. 10 is a bottom perspective view of the same, in which 6 is an unlocking projection guide groove, 7 and 8 are locking holes, and 9 is a locking claw, which is integrally formed with the cassette body 1 on the lower surface of the cassette body 1. It is provided at the tip of the elastic arm and is always urged outward.

FIG. 11 is a side view showing the state in which the sliding lid 3 and the rotating lid 2 are opened.

12 is a partial side sectional view showing the sliding lid 3 locked at the closed position, and FIG. 13 is a partial side sectional view showing the sliding lid 3 locked at the open position.

FIG. 14 is a top view showing an essential part of an example of a cassette holder.10 is a cassette holder, 11 is a holder upper plate, 12 is a holder lower plate, and 13 is a sliding lid opening protrusion, and a part of the holder lower plate 12 is shown. It is formed by bending and is located at a position corresponding to the notch 4 of the rotary lid 2. Reference numeral 14 denotes a sliding lid locking release projection which is projected from the holder lower plate 12 in a bead shape. Reference numeral 15 is a cassette pressing spring that presses the tape cassette provided on the upper plate of the holder downward. FIG. 15 is a side cross section thereof.

The operation of the cassette holder configured as described above will be described below.

First, when the tape cassette in the closed state is inserted into the cassette holder, the locking claw 9 comes into contact with the left end of the locking release projection 14 to release the locking, and immediately after that, the front edge of the sliding lid 3 slides. It hits the movable lid opening protrusion 13. When the tape cassette body 1 is further inserted, the sliding lid 3 is completely opened, and the sliding hole 3 and the locking claw 9 are locked in the open position to complete the insertion. FIG. 16 is a partial side sectional view showing a state where the insertion is completed.

The tape cassette inserted in this way moves to the playing position together with the cassette holder 10, and returns to the inserting position and is taken out again after the performance is completed.

Problems to be Solved by the Invention However, in the above-mentioned structure, when the tape cassette in the state shown in FIG. 16 is taken out, the cassette body 1 and the sliding lid 3 are usually held together and pulled out. Even if the sliding 3 itself has a spring-biased restoring force in the closing direction, the sliding lid 3 and the cassette holder 10 are guided by the sliding frictional force with the cassette body 1 and the force of the cassette pressing spring. Even if the right end of the lock release projection 14 and the locking claw 9 are unlocked due to frictional force between the surfaces and the like, the locking force does not come out from between the fingers. It had a problem that it could not get out and close itself.

In view of the above-mentioned problems, the present invention provides a tape cassette that can surely close the sliding lid when taking out the tape cassette.

Means for Solving the Problems In order to solve the above problems, the tape cassette of the present invention is provided with an engaged recess between a pair of hub drive shaft insertion openings provided on the lower surface of the sliding lid. .

Effect of the Invention With the above-described structure, the present invention can be forcibly closed at the time of taking out the tape cassette by the contact between the engaged concave portion provided on the cassette sliding lid and the sliding lid closing protrusion provided on the cassette holder side. Becomes

Embodiment A tape cassette according to an embodiment of the present invention will be described below with reference to the drawings.

FIG. 1 is a perspective view showing the lower surface of the tape cassette according to the first embodiment of the present invention, and 16 is an engaged recess. The engaged recess may be a recess formed by a through hole or a recess formed by a non-through hole. As shown in the figure, it is located approximately in the middle of the left and right hub drive shaft insertion holes. Numeral 17 is a place to be an abutting portion when closed.

FIG. 2 is a perspective view showing the lower surface of the tape cassette according to the second embodiment of the present invention. Reference numeral 16 is an engaged recess which tapers in one direction and is formed by a through hole. This allows the running direction of the tape and the beginning and end of the tape to be displayed.

FIG. 3 is a side sectional view of an embodiment in which the engaged recess is formed by a non-through hole, and FIG. 4 is a side view of an embodiment in which the engaged recess is formed by a through hole.

FIG. 5 is a top view of the first embodiment of the cassette holder using the tape cassette according to the present invention. Reference numeral 18 denotes a sliding lid closing projection which is projected from the holder lower plate 12 to form a gentle inclined surface toward the tape cassette to be inserted so that the insertion can be smoothly performed. FIG. 6 is a side sectional view thereof. At the end of inserting the tape cassette into such a cassette holder, the engaged concave portion 16 is a sliding lid closing protrusion.
It's on top of 18, yet in non-interference with each other. When the tape cassette is taken out, it contacts the right slant surface of the sliding lid closing projection 18 and the side surface 17 forming the recessed portion of the engaged recessed portion 16 of the tape cassette, and forcibly stays in that position until the sliding lid 3 is completely closed. Can be stopped. Cassette closing spring 15 after closing
Of the sliding lid closing protrusion 18 and is taken out.

FIG. 7 is a top view of the second embodiment relating to the cassette holder. In the figure, reference numeral 19 denotes a sliding lid closing protrusion, which is formed of an elastic body such as a leaf spring. Reference numeral 20 is a square hole provided in the holder lower plate 12, and a sliding lid closing protrusion 19 projects from the lower side. By elastically supporting the sliding lid closing protrusion 19 in this manner, it is possible to easily give a certain limit value to the closing force of the sliding lid 3 and to smoothly insert and remove. Alternatively, the cassette pressing spring 15 can be omitted. FIG. 8 is a side view thereof.

As shown in FIGS. 1 and 2, the engaged recess is formed in a polygonal shape, and one side close to the opening is
By making it orthogonal to the sliding direction of the sliding lid, a wide and reliable abutment can be obtained and the closing operation can be ensured.

Further, since the engaged recessed portion 16 is provided between the hub drive shaft insertion openings, it is only necessary to provide one in the center, and the sliding lid closing projection 18 in the cassette holder is only required to simplify the construction.

Also, if the engaged recess 16 of the sliding lid is a through hole, the cassette body is made of a transparent body, etc., and the sliding lid closing projections 18 and 19 are formed of light reflecting members, it becomes a hub in the cassette. It also has the effect of facilitating visual confirmation of the amount of wound tape. The hub drive shaft insertion opening and the engaged recess may be formed as one continuous opening.

EFFECTS OF THE INVENTION As described above, according to the present invention, the sliding lid that slides and opens the bottom opening portion of the cassette body, the pair of hub drive shaft insertion openings provided on the lower surface of the sliding lid, and the both hub drive shaft insertion openings. By providing the engaged recess provided between the openings, the sliding lid can be reliably closed when the tape cassette is taken out from the cassette holder.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a bottom perspective view of a tape cassette according to a first embodiment of the present invention, and FIG. 2 is a bottom perspective view of a tape cassette according to a second embodiment of the present invention. FIG. 4 is a side sectional view showing the engaged recess formed with a non-through hole, FIG. 4 is a side sectional view showing the engaged recess formed with a through hole, and FIG. 5 shows a tape cassette according to the present invention. First cassette holder to use
FIG. 6 is a side sectional view of the second embodiment of the cassette holder using the tape cassette according to the present invention, FIG. 8 is a side sectional view thereof, and FIG. The figure shows a top perspective view of the proposed conventional tape cassette,
FIG. 10 is a bottom perspective view of the same, FIG. 11 is a side view showing a position where the sliding lid and the rotating lid are opened, and FIG. 12 is a partial side cross-section showing a position where the sliding lid is locked at the closed position. FIG. 13 is a partial side sectional view showing a position where the sliding lid is locked at an open position, FIG. 14 is a top view showing an essential part of an example of a cassette holder, and FIG. 15 is a side sectional view thereof. FIG. 16 is a partial side sectional view showing a state where the tape cassette has been inserted. 1 ... Cassette body, 2 ... Rotating lid, 3 ... Sliding lid, 7,
8: Locking hole, 9: Locking claw, 10: Cassette holder, 1
4 …… Locking release projection, 15 …… Cassette retainer, 16 …… Engagement recess, 18,19 …… Sliding lid closing projection.

Claims (4)

(57) [Claims] 1. A sliding lid for slidingly opening and closing an opening on the bottom face of a cassette body, a pair of hub drive shaft insertion openings provided on the lower surface of the sliding lid, and a pair of hub drive shaft insertion openings provided between the hub drive shaft insertion openings. A tape cassette comprising an engaged recess. 2. The tape cassette according to claim 1, wherein the engaged recess is a through hole. 3. An engagement side portion orthogonal to the sliding direction is provided on the side close to the opening and the engagement concave portion is formed in a polygonal shape. Tape cassette. 4. The tape cassette according to claim 2, wherein the through hole provided in the sliding lid can be seen through from the upper surface.