KR900000251Y1 - Cassette tape recorder - Google Patents

Abstract

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Description

Cassette tape recorder

1 is a perspective view of the cassette cover with the lid open;

2 is a perspective view of a cassette cover in a closed state.

3 is an exploded perspective view of the whole.

4 is a partially cutaway enlarged front view of the lock mechanism portion of the cassette cover.

5 is a partially cutaway plan view of the whole.

6 is an exploded perspective view illustrating the leaf spring structure attached to the cassette holder

7 to 9 are enlarged cross-sectional views in the direction of the V-V line arrow in FIG. 5, illustrating a mounting method of the cassette.

* Explanation of symbols for main parts of the drawings

1: compact cassette 2: tape recorder body

3: cabinet 4: cassette cover

5: cassette holder 23a, 23b: support block

24a, 24b: Point axis 29a, 29b: Set screw

45: lock mechanism 55a, 55b: leaf spring

56a, 56b: spring acting portion 61a, 61b: protrusion

The present invention relates to a cassette tape recorder having a cassette lid and a cassette holder.

The conventional cassette tape recorder of this type has a structure in which most of the cassette tape recorders are integrally coupled to the inside of the cassette cover, so that the cassette is inserted into the cassette holder in parallel with the inner surface of the cassette cover to remove the cassette. There was a lot of inconvenience in putting it.

The present invention has been devised in view of the above-described fact, and it is extremely easy to remove and insert a cassette, and to achieve a very simple structure in which the number of parts and assembly steps are small and the number of assembly parts is popped up when the cassette cover is opened. It is.

Hereinafter, an embodiment of the present invention will be described with reference to the drawings. By the way, this cassette tape recorder is a playback-only apparatus using an ordinary compact cassette (hereinafter simply referred to as a cassette) 1.

First, in FIGS. 1 to 3, the outer diameter of the cabinet 3 and the cassette 4 of the tape recorder main body 2 is extremely compact, which is only slightly larger (a few mm) than the outer diameter of the cassette 1. It consists of one dimension.

Thus, the upper surface 3a of the cabinet 3 is opened almost over the entire surface, so that the cassette 1 is mounted on the upper surface 3a portion in a horizontal form.

The cassette lid 4 is configured to cover the entire surface of the upper surface 3a from the upper portion of the cassette 1.

In addition, the cassette holder 5 is arranged inside the cassette lid 4 so that the cassette 1 is inserted into the cassette holder 5 and attached to the upper surface 3a by the lid covering of the cassette lid 4. It is configured to be.

In addition, the upper plate 6a of the plastic molding chassis (hereinafter simply referred to as the chassis) 6 assembled in the cavity 3 is arranged in a horizontal form on the upper surface 3a portion, and the upper portion of the upper plate 6a is disposed. The supply reel shaft 7, the winding reel shaft 8, the capstan 9, the cassette positioning guide 10, and the like are disposed.

Next, the cabinet 3 and the cassette lid 4 are formed of, for example, plastic, so that the cabinet 3 and the rear lid 12 are almost one side with the left and right both side walls 1la and 1lb and the rear side walls 12, respectively. The left and right both side walls 13a and 13b and the rear side wall 14 joined together are integrally provided with the cassette lid 4. In addition, a pair of notches 15a and 15b are provided at the front end of the left and right side walls 13a and 13b of the cassette lid 4. In addition, the cassette holder 5 is, for example, sheet metal processed, and is provided with a pair of cassette support portions 18a and 18b which are substantially c-shaped and oppose each other. Therefore, the regeneration head I9, the pinch roller 20, the tape guide 21, etc. are attached to the lower part of the holder main body 17. As shown in FIG.

Next, a pair of support blocks 23a and 23b are integrally provided on both the left and right ends of the rear end on the upper surface plate 6a of the set sea 6.

Thus, a pair of left and right point shafts 24a and 24b are attached to both side surfaces of these support blocks 23a and 23b by press-fitting in the state of coaxial center. Moreover, these point shafts 24a and 24b are comprised by the cylindrical shaft which provided the female threaded holes 25a and 25b in the empty space.

Thus, the cassette holder 5 is inserted into the biaxial point shafts 24a and 24b by the through holes 27a and 27b provided in both side plate portions 26a and 26b of the cassette support portions 18a and 18b, respectively, and rotates. It is freely supported. The cassette lid 4 stops the screw at the female screw holes 25a and 25b of the two point shafts 24a and 24b through the through holes 28a and 2Sb provided in the side walls 13a and 13b. It is rotatably supported by the set screw 29a, 29b for the point shaft combined use. Therefore, the cassette lid 4 and the cassette holder 5 are rotatably supported around the same axis.

In addition, the pair of projections 30a and 30b integrally provided at the left and right ends of the cassette holder 5 are a pair of projections 31a integrally provided inside the side walls 13a and 13b of the cassette lid 4 ( In the pair of gaps 32a and 32b provided between 31b) and the inner surface 4a of the cassette lid 4, they are inserted with a margin to be relatively moved within these gaps 32a and 32b. .

Thus, the lid 4 is relatively rotatably engaged with respect to the cassette holder 5 within a predetermined angular range θ ₁ (see FIGS. 7 and 9).

The cassette holder 5 is provided between the support block 23a on the other hand and the side plate portion 16a of the cassette support part 18a by a creek mechanism (not shown) using, for example, a spool pulley and a coil spring. Is clicked on the cassette insertion position shown in FIG. 7 and the cassette mounting position shown in FIG.

The lower plate portions 33a and 33b of both cassette support portions 18a and 18b of the cassette holder 5 are inserted into the upper surfaces of the left and right end portions of the upper plate 6a of FIG. A pair of jaws 34a and 34b for forming a substantially one side shape and a jaw portion 35 into which one of a pair of upper and lower pairs of large image-expanded portions 35 of the cassette 1 are inserted are provided.

In addition, a pair of slits 38a and 38b into which the left and right pairs of springs 37 of the cassette 1 are inserted into both side plate portions 26a and 26b of both cassette support portions 18a and 18b of the cassette holder 5. ) Is installed. The upper end of the front wall 40 of the cabinet 3 is provided with a pair of left and right cassette pressing springs 41a and 41b which are leaf springs.

Next, as shown in FIG. 3, inside the front end edge 43 of the cassette lid 4, the lock projection 44 which is almost L-shaped is integrally provided. On the other hand, as shown in FIGS. 3 and 4, at the upper end of the front wall 40 of the cabinet 3, a lock mechanism 45 for engaging the lock projection 44 to lock the cassette lid 4 is provided. It is installed.

A lock plate 46 is used for the lock mechanism 45, and the lock plate 46 is inserted between the front wall 40 and the chassis 6 of the three sides of the cabinet 3 on the left and right sides and the lower side thereof. It slides freely in the left and right directions. Therefore, the lock protrusion part 48 provided in the inclined surface 47 in the upper surface of the front-end | tip of this lock plate 46 is integrally provided. In addition, the catching part 49 is integrally provided in the lower part of the locking protrusion part 48. In addition, the return spring 51 is inserted into the coil spring 50 provided on the rear surface of the lock plate 46, and the left end is integrally formed with the chassis 6 in FIG. It is pressed by the provided protrusion 52, and the right end part is pressed by the part 53 of the lock board 46 in FIG. Therefore, the lock plate 46 is urged by the return spring 5l to slide in the right direction in FIG.

Next, in FIGS. 5 to 6, a pair of left and right leaf springs 55a and 55b are disposed between the cassette lid 4 and the cassette holder 5.

Thus, as shown in FIG. 5, the three spring action portions are almost formed in a fork at the front end of the two leaf springs 55a and 55b, and a pair of left and right spring action portions 56a are upward. And the spring action part 56b of the center part is inclined downward. In addition, a through hole 58 is provided in a substantially central portion of the base 57, and a curved portion 59 bent substantially vertically downward is integrally provided between the base 57 and the tip. On the other hand, a pair of long holes 60a and 60b are provided at the left and right ends of the holder main body 17 of the cassette holder 5. Thus, both leaf springs 55a and 55b are engaged in the ends of the two long holes 60a and 60b by their respective bent portions 59 to the upper surfaces of the left and right ends of the holder body 17 in a state where the position is determined. It is inserted into a pair of projections 61a and 61b which are cut out, and the heads of these projections 61a and 61b are caulked and fixed to the cassette holder 5. Thus, the spring acting portion 56b at the center of both leaf springs 55a and 55b fixed to the cassette holder 5 is inserted into the two long holes 60a and 60b. At this time, the positive plate springs 55a and 55b may be fixed to the cassette lid 4 side without necessarily being fixed to the cassette holder 5 side.

Next, the mounting method of the cassette 1 will be described with reference to FIGS.

First, Fig. 7 shows a state in which the cassette lid 4 is opened. At this time, the cassette holder 5 is positioned in a creek at an angle of inclination of approximately 45 degrees shown. On the other hand, at this time, the cassette lid 4 is pressed by the pair of spring action portions 56a of the two leaf springs 55a and 55b, and the cassette lid 4 is rotated in the arrow a direction with respect to the cassette holder 5. It is opened at an angle θ ₁ with respect to the holder 5. In addition, both the projection (30a) the amount of the projection (31a) (31b) to (30b) is abutting there is the opening angle θ ₁ of the cassette cover (4) is restricted. At this time, the spring acting portions 56b at each central portion of both leaf springs 55a and 55b are located in the two long holes 60a and 60b, that is, in the thick plate of the holder body 17, The lower side of the holder body 17 does not protrude.

Next, in the open lid state, the cassette 1 is inserted into the cassette holder 5 in the downward direction inclined from the front opening 62 side thereof, and the left and right ends of the cassette 1 are two cassettes. It is inserted into and supported by the support portions 18a and 18b. Therefore, at the time of such cassette insertion, the cassette lid 4 is opened at an angle θ ₁ with respect to the cassette holder 5, and the cassette lid 4 is not obstructed to cassette insertion at all, making the cassette insertion extremely easy. I can do it. In addition, since the spring acting portion 56b of each central portion of the two leaf springs 55a and 55b does not protrude in the downward direction of the holder body 17, when the cassette is inserted, the spring acting portion ( 56b), the cassette 1 can be inserted extremely smoothly without unexpectedly jamming.

Next, after inserting the cassette, the cassette 1 is rotated in the direction of arrow a 'as shown in FIG. 8, whereby the cassette 1 is mounted. In this case, the cassette lid 4 is mounted by the inner surface 4a of the cassette lid 4. Each pair of spring actuating portions 56a of the leaf springs 55a and 55b is pressed, and the cassette holder 5 rotates in the direction of arrow a 'by the repulsive force of the spring acting portion 56a.

At this time, the spring acting portion 56b at the center of each of the two leaf springs 55a and 55 has an upper surface of the cassette 1 which projects downward from the two long holes 60a and 60b of the holder body 17. Pressure

Next, as shown by the solid line in FIG. 9, with the cassette lid 4 completely closed, the cassette 1 has two reel shafts 7 (8), a capstan 9, and a cassette positioning guide 10. ), And is mounted horizontally on the upper plate (6a) of the chassis (6).

At this time, the two cassette pressing springs 41a and 41b press the rear end of the cassette 1, and the cassette 1 is pressed to the cassette holder 5 side to determine the position in the front and rear directions. In addition, by the completion of the lid closing, the lock protrusion 44 of the cassette lid 4 is locked by the lock mechanism 45. In other words, immediately before the cassette lid 4 is closed, the lock protrusion 44 is pressed against the inclined surface 47 of the lock portion 48, and the lock plate 46 is returned by a spring (the guide action by the inclined surface 47). 51, once sliding in the left-right direction in FIG. 4, it is returned in the left-right direction in FIG. 4, and the lock portion 48 is engaged with the lock protrusion 44 as in FIG. It is locked to the closed position of (4). Thus, as the cassette lid 4 is locked, as the repulsive force of the pair of spring acting portions 56a of each of the two leaf springs 55a and 55b, the cassette holder 5 has both lower plate portions 33a and 33b thereof. It is pressed against and fixed to the bottom surfaces of the two convex portions 34a and 34b of the chassis 6 by means of this. In addition, the cassette 1 is pressed onto and fixed to the top plate 6a of the chassis 6 by the spring acting portions 56b at the central portions of the two leaf springs 55a and 55b.

As described above, the cassette mounting operation is completed, and then the regeneration needle (not shown) is pressed so that the regeneration head 19 is deeply inserted into the cassette 1 so as to contact the tape and at the same time the pinch roller 20 Is pressed onto the capstan 9 through the tape, and necessary regeneration is performed.

Next, as described above, when taking out the attached cassette 1, the fingertip is applied to the tongs 49 of the lock plate 46 in advance, and the lock plate 46 is turned against the spring 5. To the left in Fig. 4 to move lightly. The lock portion 48 is peeled off the lock protrusion 44 so that the lock of the cassette lid 4 is released. At this moment, the cassette lid 4 protrudes from the position shown by the dotted line in FIG. 9 by the repulsive force of the pair of spring action portions 56a of the two leaf springs 55a and 55b. Opening of 4) shows the user's intention.

Therefore, by protruding the cassette lid 4, the fingertips can be comfortably hung on the front end 43 of the cassette lid 4, and the cassette lid 4 is extremely easily rotated to the lid opening position of FIG. I can do it. In addition, when the cassette lid 4 is opened, the two projections 30a and 30b are pulled out by the two projections 31a and 31b, and the cassette holder 5 is held at the cassette insertion position of FIG. It is picked up and positioned back on the creek. Therefore, after this, the cassette 1 is held upward in the inclined direction in the cassette holder 5, and the ejection of the cassette 1 is performed very easily and smoothly also in this case as in the case of inserting the cassette described above.

Although the embodiment of the present invention has been described above, the present invention is not limited to the apparatus for exclusive use of reproduction shown in the embodiment, but can be applied to a recording / reproducing apparatus.

In addition, the structure, shape, etc. of the cassette lid, cassette holder, leaf spring, lock mechanism, etc. mentioned in the present invention are not limited to those shown and described in the embodiments.

As described above, the cassette cover is opened at a predetermined angle with respect to the cassette holder with the cassette cover open, so that the cassette cover can be taken out without any obstacle when the cassette is inserted into and taken out of the cassette holder. This can be done very easily. Moreover, when taking out the mounted cassette, it is very convenient to use the cassette lid by releasing the cassette lid so that the cassette lid is protruded to protrude and then the cassette lid opening operation is very easy. Therefore, a spring which is arranged between the cassette lid and the cassette holder and fixed to one direction by a spring that acts to open the cassette lid at an angle with respect to the cassette holder, and a spring for protruding from the cassette lid, and a cassette mounted state By installing a spring for pressing and fixing the cassette holder to a predetermined reference surface, the number of parts and the number of assembly processes can be made small and can be obtained with a very simple structure.

Claims (1)

A cassette cover 4 supported by a rotational material with respect to the tape recorder main body 2, a cassette holder 5 disposed inside the cassette cover and supported by a rotational material with respect to the tape recorder main body 2, Engaging means for engaging the cassette lid 4 and the cassette holder 5 with a relative rotational material within a predetermined angle, a locking mechanism 45 for positioning and locking the cassette lid, the cassette lid 4 and A position covering the cassette cover 5 and the first spring action portion 56a interposed between the cassette holder 5 and exerting a force to open the cassette lid 4 at an angle with respect to the cassette holder 5. Each spring lock is provided with leaf springs 55a and 55b integrally provided with second spring action portions 56b for directly pressing the cassettes in the cassette holder 5, and the cassette lid 4 is covered. When you rotate The second spring acting portion 56b when the cassette holder 5 is rotated through the first spring acting portion 56a with the set lid and the rotation is completed to the position covering the cassette lid 4. The cassette in the cassette holder 5 is directly pressed to fix the cassette lid 4, and the cassette lid 4 is locked by the lock mechanism 45, and the lock at the position where the cassette lid 4 is covered. By releasing the lock by the mechanism 45, the cassette lid 4 protrudes out of the first spring acting portion 56a so that the cassette lid 4 is opened at a predetermined angle with respect to the cassette holder 5. And release the pressurization of the cassette by the second spring action portion (56b).