JPS61292287A - Tape cassette - Google Patents

Abstract

PURPOSE:To accurately obtain the pressing and position holding of a cassette with a cassette pressing means within a cassette holder by providing a pair of recessed part at the symmetrical position in the neighborhood of both right and left side of a cassette upper surface. CONSTITUTION:With inserting a tape cassette in a closed state from the inserting hole 13 of a cassette holder 8 headed by a rotating cover 3, an engagement releasing projecting strip 12 is inserted to a notch 6 and the engaging to the closed position of a sliding cover 4 is released with pushing up an engaging projection 7. With inserting the cassette further, the projection 11 is inserted to a notch 5 and is abutted with a part of the sliding cover 4, with the sliding cover 4 set at the position, and a cassette main body 1 is inserted furthermore. A recessed part 2 at the cassette upper surface is engaged with the engaging part 10 of a cassette compression spring 9 and with holding the positioned state the sliding cover 4 is engaged to an opening position with the engaging projection 7.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a tape cassette for digital audio and the like.

2. Description of the Related Art In recent years, tape cassettes have been widely used for audio and video applications. Also, recently, some new ones have been proposed for use in digital audio.

A proposed conventional tape cassette for digital audio will be described below with reference to the drawings.

FIG. 8 is a top view of a conventional tape cassette, in which 1 is the cassette body, and 2 is a recess provided in the upper center of the cassette body for drawing the cassette into a cassette holder or the like.

A hook for ejection is provided at 3, and 3 is a rotating lid for opening and closing the front opening of the cassette, which is always biased in the closing direction by the force of a spring (not shown). Figure 9 is a side view of the same, where 4 is a sliding lid that opens and closes the opening on the bottom of the cassette, which is in the closed position and is opened by moving it in the direction of the arrow against the return force of a spring (not shown). be able to. FIG. 10 is a front view thereof. 6
is a notch in the rotating lid 3, and a part of the sliding lid 4 is peeking out from inside. Reference numeral 6 designates a notch in the rotating lid 3, and deep inside the notch there is a groove provided on the lower surface of the sliding lid 4 and two openings provided in the groove. The locking protrusion 07 shown here is a locking protrusion, which is provided on the elastic arm formed integrally with the main body.

The operation of the tape cassette constructed as described above will be explained below.

First, when using the cassette in the state shown in FIG. 9, it is inserted into a cassette transfer means such as a cassette holder with the rotating lid 3 facing forward. Then, inside the cassette holder, the locking protrusion 7
is pushed up to release the locking of the sliding lid 4 to the closed position, and the sliding lid 4 is pushed open in the direction of arrow A by the subsequent insertion operation, and the locking protrusion 7 is moved again to the sliding lid in the open state. 4 and hold it in the open position. From this state, the rotating lid 3 can be opened by pushing up. When ejecting a cassette, after closing the rotating lid 3, when pulling out the cassette body 1 in the ejecting direction, the sliding plate 4 is released from being held in the open position by the locking protrusion 7. will be automatically closed by

Problems to be Solved by the Invention However, with the above configuration, if the sliding plate is disengaged from the open position by the locking protrusion for some reason inside the cassette holder or during use, the sliding plate may not slide. The force of the spring force of the moving plate to return causes the cassette body to be displaced from the cassette holder in the direction of ejection, and even if the lock is not released, the cassette remains locked. The tape may shift within the cassette, making it impossible to set the cassette at a predetermined playing position, and causing problems with tape winding and feeding during operation.

In view of the above-mentioned problems, the present invention improves and utilizes the conventionally used cassette pressing spring in the cassette holder, thereby providing a tape that can hold the cassette and position the cassette body within the cassette holder. It provides cassettes.

Means for Solving the Problems In order to solve the above problems, the tape cassette of the present invention has a configuration in which a pair of recesses are provided at symmetrical positions near both left and right sides of the top surface.

Operation The present invention has the above-described configuration, and the cassette pushing spring and positioning means is provided in the cassette transfer means such as the cassette holder on the cassette recorder side in exactly the same manner as in the conventional cassette deck. In addition, it is possible to prevent the cassette from being displaced within the cassette transport means without any adverse effects on the strength or performance of the cassette.

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

FIG. 1 shows the top surface of a tape cassette in a first embodiment of the present invention, and reference numeral 2 designates locking recesses provided near both left and right sides of the top surface of the cassette.

FIG. 2 is a side view thereof, and FIG. 3 is a front view thereof.

FIG. 4 is a side cross-sectional view of an embodiment of a cassette holder using a tape cassette according to the present invention, in which 8 is a cassette holder, and 9 is a cassette pressing spring provided on both left and right sides of the upper inner surface of the cassette holder when viewed from the cassette insertion direction. . 1o
is a retaining portion that presses the top surface of the cassette and engages with the recess, and is provided at the tip of the cassette pressing spring 9. Reference numeral 11 denotes a protrusion provided deep inside the lower part of the inner surface of the cassette holder 8, with two protrusions on the left and right.
It comes into contact with a part of the sliding lid 4 visible at the inner depth of the notch 5 of the hinged rotating lid 3. Reference numeral 12 denotes a lock release protrusion that is formed in a bead shape from the lower surface of the cassette holder 8. 13 is a cassette insertion opening, and 14 is an escape hole for inserting a tape drive shaft.

FIG. 5 is a side sectional view showing the cassette inserted state.

Regarding the tape cassette 7) configured as above, the first
This will be explained with reference to FIGS. 2, 3, and 5.

First, since the recesses 2 are arranged symmetrically near the left and right sides as shown in Figure 1, it is possible to partially modify a cassette pressing spring similar to that used in conventional cassette decks and use it as a pressing spring and positioning means. In addition, since it is close to the side, it is strong and will not warp or deform, and will not adversely affect internal tape running. Furthermore, since there are two points on the left and right, positioning accuracy is also high. Also, since it is not in the center, it is convenient for visually checking the amount of tape in the cassette and for design.

When using the tape cassette in the closed state shown in FIG.
When inserted with the cassette body 1 facing forward, the cassette main body 1 is inserted while its lower surface slides on the inner lower surface of the cassette holder by the cassette pushing spring 9.

Then, the unlocking protrusion 12 enters the notch 6 and pushes up the locking protrusion 7 to release the sliding lid 4 from the closed position. As the cassette is further inserted, the protrusion 11 enters the notch 5 and comes into contact with a part of the sliding lid 4, the sliding lid 4 is stopped at that position and the cassette body 1 is further inserted. When a predetermined amount of the cassette is inserted, the recess 2 on the top surface of the cassette engages with the engaging portion 1o of the cassette push spring 9, and the cassette is held in position.

At this time, the sliding lid 4 is locked in the open position by the locking projection 7 (FIG. 5). To enter the performance state, the cassette holder 8 may not be lowered from this state, but may be opened by pushing up the rotary lid 3 or the like. When ejecting the cassette, the process is the reverse of the above.

FIG. 6 is a top view of another embodiment of the cassette suppressing means, in which a roller is used as the engaging portion. FIG. 7 is a side view thereof.

By providing the four parts and the cassette pressing and locking means that engage with the four parts, the tape cassette inserted into the cassette holder will not be misaligned. This ensures that the position of the cassette can be maintained even if the sliding lid is released from being locked in the open position due to vibration, balance, etc.

Note that the pair of recesses may be formed by a single elongated hole provided across both left and right sides.

Effects of the Invention As described above, the present invention provides a pair of recesses at symmetrical positions near the left and right sides of the upper surface of the cassette, thereby allowing the cassette pressing means to press and position and hold the cassette within the cassette pressing means such as a cassette holder. It is possible to achieve high precision and completely eliminate deformation of the cassette and its adverse effects on tape running performance.

[Brief explanation of drawings]

FIG. 1 is a top view of a tape cassette according to an embodiment of the present invention, FIG. 2 is a side view thereof, FIG. 3 is a front view thereof, and FIG. 4 is an embodiment of a cassette holder using the tape cassette according to the present invention. 5 is a side sectional view showing the cassette inserted state, FIG. 6 is a top view of another embodiment of the cassette pressing means, FIG. 7 is a side view thereof, and FIG. 8 is a conventional example. A top view, FIG. 9 is a side view, and FIG. 1Q is a front view. 1...Cassette body, 2...Recess, 3
...Rotating lid, 4...Sliding lid, 8...
...Cassette holder, 9...Cassette push spring, 16...Roller 0 Name of agent Patent attorney Satoshi Nakao (man) and 1 other person Figure 8 Figure 9', Figure N10 taste

Claims (2)

[Claims] (1) A tape cassette characterized in that a pair of recesses are provided at symmetrical positions near both left and right sides of the top surface. (2) A pair of recesses provided at symmetrical positions near the left and right sides of the top surface, a rotatable lid that covers the front opening, and a lid slidable in the front and back direction that covers the opening provided on the bottom surface. a sliding lid;
A tape cassette characterized by having a biasing means for biasing a sliding lid forward.