JPH0626059B2 - Cassette recorder - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to a cassette recorder using a tape cassette with a lid used for magnetic recording and the like.

Configuration of Conventional Example and Problems Thereof In recent years, cassette recorders have been widely used in various fields. Especially in a video cassette for high-density recording, a tape cassette with a lid is used in order to avoid attachment of fingerprints and dust. The authors have already proposed such an audio tape cassette with a lid.

A cassette recorder that automatically opens the lid by using the tape cassette with the lid, which has been proposed by the authors, will be described below.

FIG. 1 is a perspective view of a closed state of an embodiment of a tape cassette with a lid, 1 is a cassette body, 2 is a cassette upper half, 3
Is a lower cassette half, 4 is a U-shaped lid, 5 is a lid side portion, 6 is a shift pin insertion hole, and 7 is a protective plate for preventing the lid 4 from being opened carelessly.

FIG. 2 is a perspective view showing the opened state of the lid, and 8 is an opening surface 14
Ridges for forming recesses for locking, 9 and 10 are branching machines for forming openings, and 11, 12, and 13 are openings. FIG. 3 is a partial side sectional view showing the locked state.

FIG. 4 is a partial top view showing the inside, 15 is a magnetic tape, 16 is a rotation support shaft of the lid 4, 17 is a rotation support shaft fitting hole provided on the side surface of the cassette body 1, and it is directed rearward. It has a tapered, triangular shape. A leaf spring 18 urges the rotary support shaft 16 toward the rear.

FIG. 5 shows the relationship with the recorder which automatically opens the lid of the tape cassette with the lid thus constructed at the time of mounting operation. In FIG. 5, 19 is a shift pin, and 20 is a kick pin. When the cassette 1 is moved in the direction of arrow A for mounting, the shift pin 19 is first inserted into the shift pin insertion hole 6 and the shift pin 19 is in the direction of arrow B in the lid side portion 6. Shift to. As a result, the locked state of the lid 4 is released.

Further, the lower end of the lid 4 in the state of being separated from the opening surface moving in the direction of arrow A contacts the kick pin 20, and the lid 4 is pushed up and rotated by 45 ° or more (direction of arrow C). Automatically opens to obtain the open state shown in FIG.

However, with the above-described structure, there is a problem that a large stroke for mounting is required, such as unlocking the lid 4 by shifting the lid 4 and subsequently opening the lid with a kick pin. .

An object of the present invention is to further improve the above cassette recorder, and to provide a cassette recorder which requires a small amount of movement at the time of mounting and has an extremely simple structure and which can realize downsizing and thinning of a device. With the goal.

The present invention uses a tape cassette in which a U-shaped lid that pivots in the vertical direction to open and close the cassette opening engages with a recess in the opening surface and is locked in the closed position. A cassette recorder provided with a cassette loading means that is moved in a substantially vertical direction to be loaded at a cassette playing position, and a cassette lid lock release / lid opening member that is made to stand by under the tape cassette lid side to be loaded. Yes Lid unlocking and lid opening member or at least one of the cassette main body is made to move while colliding, so that unlocking and opening of the lid are completed in one operation. Therefore, the configuration can be extremely simplified.

Description of Embodiment FIG. 6 is a side view of a cassette recorder according to a first embodiment of the present invention. In FIG. 6, 1 is a tape cassette, 4 is a lid, 5 is a lid side portion, 21 is a lower chassis, 22 is an upper chassis, 23 is a cassette holder upper plate,
2 is a cassette holder lower plate, 25 is a cassette pressing spring for urging the cassette 1 downward in the cassette holder, and 26 is an abutment portion provided on the holder upper plate, which comes out with the lid open when the cassette is discharged. The lid automatically abuts against it. 27 and 28 are guide shafts of the cassette holder,
29 is a pillar for connecting the upper and lower chassis, 30 is a cassette positioning pin, 31 is a cassette rear height regulating pin, 32 is a lid locking release / lid opening member, 33 is a sliding guide shaft thereof, and 3 is a restoring force. A weak spring, 35 is a reel stand for supplying or winding the tape in the cassette, and thus FIG. 6 shows the closed tape cassette inserted in the cassette holder.

FIG. 7 shows a cassette mounting operation in progress. The cassette holder is moved by the guide shafts 27 and 28 in the direction perpendicular to the main plane of the cassette, and the lower edge of the lid side portion 5 is the lid lock release / lid opening member 32. It is a figure which shows the place which contact | abutted on the upper part and the lock to the closed position of the lid was cancelled | released.

FIG. 8 is a view showing a place where the mounting operation is further advanced. As the cassette holder descends, the lid 4 is pushed up by its lower edge to be released, but the lid lock release / lid opening member is acted upon by the force of the weak spring 34. Move against and escape to complete the opening operation. FIG. 9 is a diagram showing a state in which the opening operation is completed. As described above, in the above-described embodiment, the lid is unlocked and released continuously by simply moving the lid unlocking / lid opening member slightly, and the abutting portion at the time of opening is the pivot shaft. Since it is close, the mounting stroke is extremely small and reliable opening is possible.

FIG. 10 is a top view showing a portion of the lid unlocking / lid opening member, and 36 is a connecting portion for integrally forming a pair of left and right,
37 is a guide hole for movement.

FIG. 11 is a side view of the cassette recorder showing the second embodiment of the present invention. The figure shows the relationship between the cassette and the lid unlocking / lid opening member in the system of directly mounting the tape cassette at the playing position by manual operation or the system of the rotary cassette holder system having a fulcrum at the rear.

Reference numeral 37 denotes a cassette rear pushing spring which pushes the rear side of the cassette mounted at a predetermined performance position to position the cassette. Therefore, in order to obtain a reliable positioning, the force of the return spring 34 of the lid locking / unlocking member 32 needs to be an extremely weak spring force that can be ignored compared with the force of the spring 37. Alternatively, the lid unlocking / lid releasing member is held in the vicinity of the moved maximum displacement position, and the locked state is released in association with the ejection of the cassette, so that the influence of the spring 34 during use of the cassette is completely eliminated. Can be excluded.

In the present invention, the lid lock release / lid opening member 32 and the cassette 1 are used.
Since it operates effectively by utilizing the relative movement in the front-rear direction with respect to FIG. 11, the lid lock release / lid opening member 32 is fixed on the chassis 21 in FIG. You may temporarily retreat against the force of.

FIG. 12 is a side view of a cassette recorder according to a third embodiment of the present invention, which is based on a rotary mounting device similar to that shown in FIG. 11, but in the case where the orientation of the cassette is reversed. . In the figure, 38 is a cassette holder, 39 is a protrusion provided on the inner surface of the cassette holder 38 for automatically closing the cassette lid 4 in the opened state at the time of ejection.
Reference numeral 0 is a spring that always urges the cassette downward, 41 is a cassette insertion opening of the cassette holder 38, 42 is a cassette holder lower plate, 43 is a rotation support shaft of the cassette holder 38, 44 is a bearing plate, and 45 is a cassette holder. It is a spring that always biases upward. In this way, even when the lid 4 of the cassette is mounted from the downward position, the lid lock release / lid opening member 32 and the lid 4 are released.
The upper surface of the lid lock release / lid opening member 32 is parallel or rearward with respect to the surface of the lower edge of the lid side portion 5 at the start of the collision so that the collision starts at the correct position with the lower edge of the side portion 5. Must be formed so that

FIG. 13 shows a lid unlocking and lid opening member 32 according to the present invention.
It is a top view which shows another Example regarding the holding guide method of. In the figure, reference numeral 46 is a rotary arm, 47 is a rotary support shaft thereof, 48 is a stopper, and the lid locking / unlocking member 32 is provided at the tip of the rotary arm 46 bent and raised. FIG. 14 is a side view thereof. The movement amount of the lid unlocking / lid opening member 32 during operation is extremely small, and it is possible to utilize a part of the arc movement by the rotating arm. In short, the guide is not limited to the above, as long as it can guide in a linear motion in the front-rear direction.

It should be noted that the start position of the abutment between the lid unlocking / lid opening member and the lid side lower edge is the optimum position in front of the position of the pivot shaft 16 of the lid 4, and not only the lid unlocking but also the subsequent position. It is necessary to open smoothly. Therefore, although not shown, it is needless to say that the regulation of the insertion amount of the cassette into the cassette holder or the like must be accurately held by an appropriate positioning method.

The present invention uses a tape cassette in which a U-shaped lid that pivots in the vertical direction to open and close the cassette opening engages with the concave portion of the opening surface and is locked in the closed position. A cassette mounting means that is moved in a substantially vertical direction to be mounted at a cassette playing position, and a cassette lid lock release / lid opening member that stands by below the side portion of the tape cassette lid to be mounted are provided. Depending on the fitting, at least one of the lid unlocking and lid opening member or the cassette body can be moved, so only a mounting operation requires a very short stroke. And can be performed continuously and extremely smoothly. The number of additional parts is extremely small and the configuration is simple, and it is possible to realize an excellent cassette recorder applicable to any cassette mounting method.

[Brief description of drawings]

FIG. 1 is a perspective view of a tape cassette with a lid in a closed state, and FIG.
FIG. 3 is a perspective view showing the lid open state, FIG. 3 is a partial side sectional view showing the lid locked state, FIG. 4 is a partial top view showing the inside of the cassette, and FIG. FIG. 7 is a partial side view showing the mechanism and the relationship with the cassette recorder. FIG. 6 is a side view showing the main part of the cassette recorder of the first embodiment.
FIG. 8 is a side view showing the middle of the mounting operation, FIG. 9 is a side view showing the mounting completed state, FIG. 10 is a top view showing the lid locking release and lid opening member, and FIG. Second of the present invention
12 is a side view of the cassette recorder in the embodiment of the present invention, FIG. 12 is a side view of the cassette recorder in the third embodiment of the present invention, and FIG. 13 is a second embodiment of the lid lock releasing / lid opening member in the present invention. Is a top view and FIG. 14 is a side view thereof. 1 ... Cassette body, 4 ... Lid, 5 ... Lid side part, 19 ...
... shift pin, 20 ... kick pin, 21 ... lower chassis, 30 ... cassette positioning pin, 32 ... lid unlocking and lid opening member, 33 ... sliding guide shaft, 35 ... reel stand.

Claims (4)

[Claims] 1. A tape cassette in a closed state is used, wherein a U-shaped lid that pivots in the vertical direction to open and close the cassette opening is engaged with a concave portion of the opening surface and locked in a closed position. A cassette mounting means which is moved in a direction substantially perpendicular to the main plane to be mounted at a cassette playing position, and a tape cassette lid side to be mounted is made to stand by below a pivot shaft or pivot of the lid. A cassette lid locking / unlocking / lid opening member having an abutting portion with the lower surface of the lid side is provided on the front side, and the cassette lid / unlocking / lid opening member collides with the cassette lid during mounting. The lock is released from the closed position and the subsequent mounting operation causes the lid to be unlocked by the lid unlocking / lid opening member, and at least one of the lid unlocking / lid opening member or the cassette body. To move in the front-back direction Cassette recorder, wherein the door. 2. A lid lock release / lid opening member is moved,
The cassette recorder according to claim 1, characterized in that the cassette recorder is retained in the vicinity of its maximum movement position. 3. The cassette recorder according to claim 1, wherein the lid lock releasing / lid opening member is spring-biased so as to be capable of returning toward the cassette body side to which the lid is attached. 4. The cassette recorder according to claim 1, wherein a pair of left and right lid lock releasing / lid opening members are integrally formed.