JPS60223089A - Tape cassette - Google Patents

Abstract

PURPOSE:To ensure a complete opening action of a cover by setting the position and form of a rear end part of a cover lock releasing projection formed to the cover side so that said position is set apart from an opening surface further in a closed state than an opened state of the cover by a shift amount needed for release of the cover lock or more. CONSTITUTION:The rear end part of a cover lock releasing projection 6 is extended up to the back side of a turning support shaft 8. A closed cassette 1 is put into the direction A parallel to the cassette main plane and then moved down toward B vertical to the cassette main plane. Thus the cassette is set at its prescribed play position. A cassette cover 4 is pushed forward at a sloping surface part 20 and its following wall part. When the cassette 1 is moved down further under such conditions, the projection 6 is pushed by a contact part 18, a sloping part 19, etc. and turned. Thus the cover 4 is turned clockwise. When a setting action is through with the cassette 1, the projection 6 is guided along a guide groove 21 and turned upward. Thus the cover 4 can be opened automatically.

Description

[Detailed description of the invention] Industrial applications The present invention relates to a tape cassette with a lid.

2. Description of the Related Art In recent years, there has been a demand for audio tape cassettes with lids to protect the tapes.

Since audio tape cassettes must be able to be used on both sides, A and B, they have a different structure from conventional single-sided video cassettes, and therefore their lid opening/closing mechanisms are also different.

Therefore, a new cassette was needed.

An example of a tape cassette that has already been proposed will be described below with reference to the drawings.

Fig. 9 is a top view of the previously proposed tape cassette with a lid, and Fig. 10 is a side view thereof, where 1 is the cassette body, 2 is the upper half of the cassette, 3 is the lower half of the cassette, 4 is the cassette lid, and 6 is the side view. On the side of the cassette lid 4, 6 is a lid lock release protrusion provided on the front side of the cassette lid, 7 is a recess provided on the upper and lower surfaces of the cassette, 8 is a cassette lid rotation support shaft, and 9 is a rotation support shaft 8. The fitting hole is formed with a substantially V-shaped guide wall tapering toward the rear at the abutting portion of the upper cassette half 2 and the lower cassette half 3. Reference numeral 10 denotes a spring whose one end is applied to the cassette lid rotation support shaft 8, which always urges the cassette lid 4 backward.

Figure 11 is a front view showing the open state of the lid, and the angle is 11°12.1.
3 is an opening, and 14 is a recess provided in the opening surface. 12th
The figure is a top view showing the inside of the cassette, in which reel-to-reel tape 17 is stored. 16 is a convex portion provided on the inner surface of the lid 4, and 16 is a dividing bar of the opening.

FIG. 13 is a partially detailed view showing the lid in the closed state, and the dotted line shows the open state. FIG. 14 is a side view of the lid 4.

To open the cassette lid 4 in the closed state shown in FIGS. 9 and 10, the tape cassette with a lid constructed as described above has to resist the force of the spring 1o and move the lid 4 from the opening surface almost perpendicular to the opening surface. direction, that is, toward the front of the cassette. After that, press the front lower edge of the lid 4 or the lid lock release protrusion 6.
All you have to do is push it upwards. Since the lid 4 is biased backward by the spring 10, it rises along the front surface of the opening, and when it rises more than half way, it rotates clockwise while sliding as a fulcrum at the upper part of the front edge of the opening, and comes into close contact with the top surface of the cassette. It will fit as you do. When closing, move the cassette lid 4 in the state shown in Fig. 3 forward along the top surface of the cassette upper half 2, and it will move in the opposite direction to close the opening, as shown in Fig. 9. state. The lid 4 can be opened downward, but when this cassette is actually installed in a device, whether the A side or B side of the cassette is used, it should be opened only in one direction relative to the device, for example, upwards inside the device. Become.

The recess 7 is provided at a position corresponding to the protrusion 15 of the lid in the open state, so that the lid 4 is in close contact with the upper surface of the cassette body 1 in the open state. In addition, a gentle slope is formed in front of the recess 7 to allow the lid 4 to return smoothly from the open position to the closed position. The recess 7 does not necessarily need to be provided;
It may also be brought into contact with the upper surface of the cassette body 1 via the convex portion 16 .

This makes it easier to use the upper and lower edges of the lid 4 as abutting portions from the open state to the closed state. Furthermore, by reversing the relationship between the concave and convex portions, the concave portion 7 on the cassette body can be omitted.

Since the locking mechanism is constructed in this manner, it is only necessary to once pull the lid 4 forward from the opening of the cassette body 1 to release the lock, and then rotate the lid 4.

The lid lock release projection 6 is configured such that its rear end has the same central position as the pivot shaft 8, and its position is regulated by the fitting hole 9 in both open and closed states.

Problems to be Solved by the Invention However, with the above configuration, when the lid lock release protrusion 6 is pushed on the cassette recorder side to release the lock, it is difficult to ensure that the lock release member is fixed at a fixed location. , even if the opened lid is placed in the shape shown in FIG. 11 and the pivot shaft and the lid lock release protrusion try to return to their original positions regulated by the fitting hole 9, the push-out member Therefore, the lid 4 cannot be completely returned to the original position due to the
The problem is that the operation of opening the lid ends before it is in close contact with the top surface of the lid, which is undesirable.

In view of the above-mentioned problems, the present invention has been developed so that the lid 4 is completely fitted into the upper surface of the cassette body after the opening operation is completed, the urging force of the lid does not act on the extrusion member, and the tape can be used with minimal dead space. It provides cassettes.

Means for Solving the Problems In order to solve the above problems, the tape cassette of the present invention has a rear end position of the lid lock release protrusion provided on the side of the lid, so that the position of the rear end of the lid lock release protrusion can be changed between the two lid opening and closing states. The structure is such that the position and shape are such that in the closed state, the lock is located further away from the opening surface by the amount of movement required for unlocking or more than that.

Operation According to the above-described structure, the rear end of the lid lock release protrusion moves forward by an amount or more necessary for releasing the lid after the lid is opened, so that the lid on the recorder side There is no interference with the unlocking member, and the lid can be opened completely.

EMBODIMENTS Below, tape cassettes according to embodiments of the present invention will be described with reference to the drawings.

FIG. 1 shows the lid side of a tape cassette in a first embodiment of the present invention. In FIG. 1, the rear end of the lid lock release projection 6 extends further back than the pivot shaft 8. As shown in FIG. Further, t indicates the distance to the rear end of the lock release projection 6.

Figure 2 is a side view of the main parts showing the tape cassette with the cassette lid shown in Figure 1 used in a cassette recorder.
Reference numeral 17 denotes a lock release means, and 18 denotes a lid abutting portion, with which the tip of the opening/closing projection 6 abuts. Reference numeral 19 denotes a sloped portion; 20 denotes a sloped portion that presses the rear end of the lid lock release projection 6 and pushes the lid 4 forward;
Reference numeral 1 denotes a guide groove for guiding the opening/closing protrusion 6.

When used in a cassette recorder configured in this way,
Insert the closed cassette 1 in the direction of the arrow parallel to the main plane of the cassette (Fig. 2), and from this position move (descend) in the direction perpendicular to the main plane of the cassette (arrow B) to reach the predetermined playing position. Performs setting operations. FIG. 3 is a diagram showing the setting operation in progress, in which the cassette lid 4 is pushed forward by the slope portion 20 and the wall portion following it. If the descent continues further from this state, the lid lock release protrusion 6 will move from the abutting portion 1
8. Pushed by the inclined portion 19 etc., the lid 4 is rotated clockwise. At the end of the lowering or setting operation, the fourth
As shown in the figure, the lid lock release projection 6 is guided by the guide groove 21 and faces upward. In this way, the automatic opening operation of the lid 4 is completed.

FIG. 5 is a side view of the lid 4 showing another embodiment of the lid lock release projection, in which a circular projection 6 is provided, but its position is slightly rearward than the position of the pivot shaft 8. It was established. In these cases, the lid 4 may be pulled forward by the inclined surface 20, and the lid 4 may be opened by the member that comes into contact with the lower edge of the pushed-out lid 4. Furthermore, by providing the rear end of the lid lock release protrusion e behind the rotation support shaft 8, the position of the rotation support shaft in the open state can be exactly the same as in the closed state. The lid 4 can be securely stored on the upper surface of the cassette body.

FIG. 6 is a side view showing a main part of an embodiment of a cassette recorder using a cassette having such a circular protrusion 6.
2 is a cabinet, 23 is a cassette insertion slot, 24 is a cassette holding part, 25 is a cassette pressing spring, 26 is a cassette holding part guide shaft, 27 is a lower chassis, 28 is an upper chassis,
29 (d cassette guide pin; 3o is a cassette height regulating portion integrally formed with the cassette guide pin 29; 31
3 is the height regulating part at the rear of the cassette, 32 is the unlocking member, 3
3 is an inclined surface provided at the tip of the unlocking member 32, 34 is a lower edge contact portion of the cassette lid 4, 35 is a boss for attaching the lower/yarn 27 to the cabinet 22, and 36 is a reel stand inside the cassette body 1. supply and wind up the tape. Reference numeral 37 denotes an abutting section provided on the upper part of the cassette holding section 24, which abuts against the upper edge of the lid 4 when an open cassette is ejected to automatically close the cassette. FIG. 7 shows a state in which the cassette holding portion 24 has been lowered from the state in which insertion has been completed and is set at a predetermined performance position.

The reed 4 which has been pushed out and released by the slope part 33 contacts the contact part 34 with its lower edge and is pushed up and rotated clockwise.
Get open state. At the time of resetting, the cassette rises in the open state, and at the time of ejection, the upper edge of the lid 4 comes into contact with the contact portion 37 and is automatically closed. It is then ejected in a closed state. The reason why the cassette guide pin 29 is made longer is that it first positions the descending cassette.
This is because if the lid 4 is pushed out after that, the lid 4 can be pulled off more reliably. - Figure 8 is a side view of the main part showing an embodiment in which the cassette body 1 is moved back and separated from each other during setting, instead of the cassette lid 4 being pushed forward. A reference hole 39 provided in is a cassette positioning mechanism and is fitted into the reference hole 38 to position the cassette. Reference numeral 4o denotes a sumo wrestler soto lid positioning member, which first engages with the circular protrusion 6 of the lid lock release protrusion for the descending cassette, regulates its front and back position, and further descends to position the cassette positioning bin 39. and the reference hole 38 of the cassette, and the cassette 1
move back a little. As the cassette moves back, the lock is released, and the abutting portion 34 opens the cassette lid 4.

Effects of the Invention As described above, the present invention provides a mechanism for opening and closing the cassette opening provided on one side of the cassette body by rotating it in the vertical direction.
The letter-shaped cassette lid is a tape cassette whose locking state in the closed position is released by pulling it away in a direction perpendicular to the opening surface when the lid is closed, and the lid locking release is attached to the side of the lid. In addition, the rear end position of the lid lock release projection is opened by the amount of movement required for unlocking or more in the closed state than in the open state of the lid. a position far from the surface,
Due to this shape, when used in a cassette recorder, there is no interference with the unlocking member after the lid is opened, and the lid can be opened completely.

[Brief explanation of drawings]

FIG. 1 is a side view of a tape cassette lid in a first embodiment of the tape cassette according to the present invention, and FIG. 2 is a side view of main parts showing the finished state when the tape cassette according to the present invention is inserted into a cassette recorder. 3 is a side view showing the setting operation in progress, FIG. 4 is a side view showing the end of the setting operation, FIG. 6 is a side view of the lid of the tape cassette in the second embodiment of the present invention, and FIG. Figure 6 shows the second embodiment of the present invention.
FIG. 7 is a side view of the main part showing the end of cassette insertion when the tape cassette in this embodiment is used in a cassette recorder, FIG. 7 is a side view showing the end of cassette setting, and FIG. 8 is a state in which the tape cassette is used in another cassette recorder. FIG. 9 is a top view of a conventional tape cassette, and FIG.
The figure is a side view, FIG. 11 is a front view showing the open state of the lid, FIG. 12 is a top view showing the inside of a conventional tape cassette, and FIG. 13 is a partially detailed view showing the inside of the conventional tape cassette. FIG. 14 is a side view of the lid opening. 4...Lid, 6...Latch release protrusion, 8
...Rotation shaft, 9...Fitting hole, 32.
...Latch release member. 3? -m-lock j! )! Ball member Figure 7 sum? 7

Claims (3)

[Claims] (1) Cassette body - the cassette opening provided on the side,
The U-shaped center lid opens and closes by rotating vertically.
A tape cassette that is released from the closed position by pulling away in a direction substantially perpendicular to the opening surface in the closed state, the tape cassette having a lid release protrusion on the side of the lid, The position of the rear end of the lid unlocking protrusion is located further from the opening surface by the amount of movement required for unlocking or more in the closed state than in the open state of the lid in the open and closed states. A tape cassette characterized by being configured in such a position and shape. (2) The tape cassette according to claim 1, wherein the lid lock release projection is circular. (3) The tape cassette according to claim 1, wherein the lid lock release projection is formed to be elongated in the front-rear direction of the cassette.