JPH0370302B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to a cassette recorder using a tape cassette with a lid.

Conventional configurations and their problems In recent years, there has been a demand for audio tape cassettes with lids to protect the tape. audio tape cassette
Due to the need to be able to use both AB and A, the structure differs from the one-sided one conventionally used in video cassettes, etc., and the cassette recorders that use it also have a different mechanism for opening and closing their lids. Therefore, a new cassette recorder that is compatible with new cassettes has become necessary.

OBJECTS OF THE INVENTION It is an object of the present invention to provide a cassette recorder that is compatible with the newly proposed tape cassette with a lid and has a cassette insertion mechanism that can automatically open and close the lid.

Structure of the Invention The present invention is a cassette recorder which is provided with means for releasing the lock by separating the cassette lid and the cassette opening during the setting operation of the inserted tape cassette in a direction substantially perpendicular to the main plane direction. Accordingly, the locking of the cassette lid is released by setting the cassette at a predetermined playing position, and the lid can be automatically opened by pushing the cassette up and down.

DESCRIPTION OF EMBODIMENTS FIG. 1 is a top view of an embodiment of a tape cassette with a lid used in an embodiment of the present invention, in which 1 is a cassette body, 2 is an upper cassette half, 3 is a lower cassette half, 4 is a cassette lid, 5 is the side of the cassette lid 4;
6 is a lid opening/closing 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 fitting hole for the rotation support shaft 8, which is inserted toward the rear at the abutment area of the upper cassette half 2 and the lower cassette half 3. It is formed of a tapered approximately V-shaped guide wall surface. 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 3 is a front view showing the open state of the lid;
2 and 13 are openings, and 14 is a recess provided in the opening surface. Figure 4 is a top view showing the inside of the cassette.
A reel-to-reel tape 17 is stored. 15 is a convex portion provided on the inner surface of the lid 4, and 16 is a support for the opening.

FIG. 5 is a partially detailed view showing the lid in the closed state, and the dotted line shows the open state. FIG. 6 is a side view of the lid 4.

In order to open the tape cassette with a lid constructed as described above, the cassette lid 4 in the closed state shown in FIGS. direction, that is, toward the front of the cassette. After that, the front lower edge of the lid 4 or the lid opening/closing projection 6 may be pushed upward. 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, which is in the state shown in Figure 3, forward along the top surface of the upper cassette half 2, and it will move in the opposite direction to close the opening, as shown in Figure 1. 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 must 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, and may be brought into contact with the upper surface of the cassette body 1 via the projection 15.
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. Also, by reversing the relationship between the concave and convex portions, the recess 7 on the cassette body can be omitted.

Since the locking mechanism is configured in this way, 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 it.

Figure 7 shows the rear end of the lid opening/closing protrusion 6 connected to the pivot shaft 8.
FIG. 4 is a side view showing an embodiment of the cassette lid 4 extending slightly further back than the cassette lid 4 shown in FIG. FIG. 8 is a side view of the main parts showing the tape cassette with the cassette lid shown in FIG. 7 used in the cassette recorder of the embodiment of the present invention, in which 17 is the lock release means, 18 is the lid abutting part. The tip of the opening/closing projection 6 comes into contact. 19 is an inclined part;
Reference numeral 20 denotes a slope portion that presses the rear end of the opening/closing projection 6 and pushes the lid 4 forward, and 21 represents a guide groove that guides the opening/closing projection 6.

With this structure, the cassette 1 in the closed state is inserted in the direction of arrow A parallel to the main plane of the cassette (Fig. 1), and moved from this position in the direction perpendicular to the main plane of the cassette (arrow B). (descent) and perform the setting operation to the predetermined performance position. FIG. 8 is a diagram showing the setting operation in progress.
The cassette lid 4 is pushed forward by the following wall. When the lid 4 continues to descend from this state, the opening/closing protrusion 6 is pushed by the abutting portion 18, the inclined portion 19, etc. and rotates, causing the lid 4 to rotate clockwise. At the end of the lowering or setting operation, as shown in Figure 10,
The opening/closing 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. 11 is a side view of the lid 4 showing another embodiment of the lid opening/closing projection, in which the circular projection 6 is connected to the pivot shaft 8.
It was installed at the location of In FIG. 12, a circular protrusion 6 is similarly provided, but the position thereof is slightly rearward from the position of the rotation support shaft 8. 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. In addition, by providing the rear end of the lid opening/closing projection 6 behind the rotation shaft 8, the position of the rotation shaft in the open state can be exactly the same as in the closed state, so that the lid can be moved in the open state. 4 can be reliably fitted onto the upper surface of the cassette main body.

FIG. 13 is a side view showing the main parts of an embodiment of a cassette recorder using a cassette having such a circular protrusion 6, in which 22 is a cabinet, 23 is a cassette insertion opening, 24 is a cassette holding part, and 25 is a cassette holder. Spring 26 is a cassette holding part guide shaft 2
7 is the lower chassis, 28 is the upper chassis, 29 is the cassette guide pin, 30 is the cassette guide pin 29
a cassette height regulating section integrally formed with the cassette height regulating section 31;
32 is a locking release member, 33 is a sloped portion provided at the tip of the locking release member 32, 34 is a lower edge contact portion of the cassette lid 4, and 35 is a lower chassis 27. A boss 36 attached to the cabinet 22 serves as a reel stand for supplying and winding up the tape in the cassette body 1. 37 is the cassette holding part 2
A contact portion provided at the upper part of the lid 4 contacts the upper edge of the lid 4 when an open cassette is ejected to automatically close the lid. FIG. 14 shows a state in which the cassette holding section 24 has been lowered from the state in which insertion has been completed and is set at a predetermined playing position.

Lid 4 pushed out and unlocked by slope portion 33
has its lower edge abutted against the abutting portion 34 and is pushed up and rotated clockwise to obtain an open state. During resetting, the cassette rises in its open state, and when ejected, the upper edge of the lid 4 abuts against 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.

FIG. 15 is a side view of essential parts 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. The reference hole 39 is a cassette positioning pin that fits into the reference hole 38 to position the cassette. Reference numeral 40 denotes a cassette lid positioning member, which first engages with the circular protrusion 6 of the opening/closing protrusion for the descending cassette to regulate its front and back position, and then further descends and engages with the cassette positioning pin 3.
9 engages with the reference hole 38 of the cassette, causing the cassette 1 to move back a little. When the cassette is moved back, the lock is released, and the abutting portion 34 opens the cassette lid 4.

Effects of the Invention The present invention has an advantage in that a tape cassette with a lid can be automatically unlocked and opened because it is provided with a lock release means that unlocks the cassette lid when the cassette is set at a predetermined playing position. This makes it possible to realize a cassette recorder.

[Brief explanation of drawings]

Fig. 1 is a top view of an embodiment of the tape cassette with a lid, Fig. 2 is a side view thereof, Fig. 3 is a front view with the lid open, Fig. 4 is a top view showing the inside, and Fig. 5 is its side view. 6 and 7 are side views of an embodiment of the lid, and FIG. 8 is a sectional view of the main parts showing an embodiment of the cassette recorder according to the present invention, showing a side view of the main parts after the cassette is inserted. Fig. 9 is a side view of the main part of the cassette during its descent, Fig. 10 is a side view of the main part at the end of setting, and Figs. 11 and 12 are side views showing other embodiments of the lid. Fig. 13 shows another embodiment of the cassette recorder; Fig. 14 is a side view of the main part after the cassette has been inserted, Fig. 14 is a side view of the main part after the setting is completed, and Fig. 15 is another embodiment of the cassette recorder. FIG. 1...Cassette body, 4...Cassette lid, 6...
...Lid opening/closing projection, 8... Rotating shaft, 18... Contact portion, 19... Inclined portion, 20... Slope portion, 29...
Cassette guide pin, 38...Reference hole.

Claims (1)

[Scope of Claims] 1. A cassette opening surface provided on one side of the cassette main body, a U-shaped cassette lid 4 that opens and closes by rotating in the vertical direction of the opening, and a part of the side surface of the cassette lid 4 or and a protrusion 6 formed on the side surface,
A cassette recorder using a tape cassette that is released from a locked state by pulling the cassette lid 4 apart in a direction substantially perpendicular to the opening surface when the cassette lid 4 is in a closed state, after the tape cassette is inserted in the main plane direction. A cassette positioning member 29 formed on the chassis for positioning the tape cassette back and forth in the cassette setting operation path in a direction substantially perpendicular to the main plane direction of the tape cassette, and a protrusion 6 formed to be inclined toward the front of the tape cassette. and a lock release means 32 consisting of a cassette lid shift member 33 that comes into contact with the tape cassette to release the locked state of the cassette lid 4, and releases the locked state after the positioning of the tape cassette. Characteristic cassette recorder. 2. The cassette recorder according to claim 1, wherein the cassette positioning member 29 is configured to move the cassette body rearward by engaging with the cassette body. 3. The cassette recorder according to claim 2, wherein the cassette positioning member 40 engages with the cassette body and positions the cassette lid 4 back and forth before moving the cassette body rearward. 4. The cassette recorder according to claim 1, further comprising contact/opening means (34) that abuts against the lower edge of the unlocked cassette lid (4) to open said cassette lid (4).