JP3231534B2 - Cassette positioning pin device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cassette positioning pin device for use in a magnetic recording / reproducing apparatus or the like for regulating the position of a cassette at a predetermined position.

[0002]

2. Description of the Related Art FIG. 8 shows an audio cassette used for a magnetic recording / reproducing apparatus (including a reproduction-only apparatus) mounted on a vehicle. In FIG. 8, 1 is the main body of the cassette,
2A and 2B are reels rotatably supported in the main body 1, and the magnetic tape 3 is wound around the reels 2A and 2B. 4A and 4B are holes for positioning the cassette formed near the front surface of the main body 1, and 5A and 5B are holes for inserting the capstan shaft.

FIG. 9 shows a main part of a magnetic recording / reproducing apparatus to be mounted on a vehicle. This apparatus is configured by incorporating various mechanical components, motors, plungers, and the like on a substrate 6.
In FIG. 9, reference numerals 7A and 7B denote cassette guide members which are supported on the bent side surfaces of the substrate 6 so as to be vertically movable. The cassette shown in FIG. 8 is guided by the cassette guide members 7A and 7B and inserted horizontally. . The cassette is the cassette guide member 7
When the plunger 8 is guided to the predetermined position by the guides A and 7B, the plunger 8 is actuated, and the driving force of the plunger 8 drives the cassette guide members 7A and 7B to move the cassette guide members 7A and 7B to the substrate 6. The cassette is lowered so as to approach, and the cassette is moved to the recording / reproducing position. 9A and 9B are cassette positioning pins fixed to the substrate 6 by caulking.
10A and 10B are capstan shafts rotatably supported on the substrate 6, and 11 is a slide plate slidably supported on the substrate 6, and the magnetic plate 12 is held on the slide plate 11. 13A and 13B are reel drive shafts, and the reel drive shafts 13A and 13B are the reels 2A and 2 in the cassette.
B, and the reel 2 is rotated by the rotational driving force of the motor 14.
A and 2B are driven to rotate.

In FIG. 9, cassette guide members 7A, 7
When the cassette inserted into the cassette B reaches a predetermined position, the plunger 8 is actuated, and the cassette guide members 7A and 7B are lowered by the driving force of the plunger 8, and the cassette is positioned in the cassette positioning holes 4A and 4B. Pin 9
A, 9B are inserted, capstan shafts 10A, 10B are inserted into holes 5A, 5B of the cassette, and reel drive shafts 13A, 13B are inserted into reels 2A, 2B of the cassette.
B engages. When the cassette is transferred to the recording / reproducing position by the cassette loading mechanism in this manner, the sliding plate 11 slides, the magnetic head 12 comes into contact with the magnetic tape of the cassette, and the rotation driving force of the motor 14 drives the reel drive shaft. 13A and 13B rotate, and the reel drive shaft 13
The reels 2A and 2B engaged with the reels A and 13B rotate, and a reproducing operation or a recording operation is performed.

FIG. 10 shows the cassette positioning pins 9A,
9B, the cassette positioning pins 9A, 9
B is a shape in which a conical portion a, a cylindrical portion b, a large-diameter cylindrical portion c, and a cylindrical portion d are integrally formed. As shown in FIG. 11, the lower ends of the cassette positioning pins 9A and 9B are inserted into holes 15 formed in the substrate 6 and are caulked.

As described above, the cassette positioning pins 9A and 9B used in the conventional magnetic recording and reproducing apparatus are
5 and is fixed by caulking, and is a cassette positioning pin 9A having a complicated shape.
9B must be manufactured separately, and the man-hours required to attach the cassette positioning pins 9A and 9B to the substrate 6 are required, and there is a problem that the assembling work is complicated.

[0007]

As described above, the cassette positioning pins 9A and 9B used in the above-mentioned conventional magnetic recording / reproducing apparatus are different from the cassette positioning pins 9A and 9B separately processed as shown in FIG. It is fixed by inserting it into the hole 15 of the substrate 6 and further performing crimping, and there is a problem that the number of mounting steps is large and the assembling work is complicated.

The present invention eliminates the above-mentioned conventional problems and provides a cassette position regulating pin device which is easy to assemble.

[0009]

SUMMARY OF THE INVENTION In order to achieve the above object, the present invention provides a curved portion formed integrally with an edge of a hole of a substrate of a magnetic recording / reproducing apparatus and a connection having a width smaller than the curved portion.
A pair of projecting pieces each formed by bending the pair of projecting pieces at substantially right angles at the connecting portion, and inserting the curved surfaces of the projecting pieces into a pair of holes formed in the cassette to position the cassette. It is characterized by having done.

[0010]

According to the present invention, a cassette positioning pin is formed by bending a part of a substrate of a magnetic recording / reproducing apparatus. After inserting the inserted cassette positioning pin into the hole of the board, the work of further caulking stop becomes unnecessary,
The number of assembling steps can be reduced and the configuration can be made at low cost.

[0011]

1 to 5 show an embodiment of the present invention.
It will be explained together. FIG. 1 shows a substrate 16 of a magnetic recording / reproducing apparatus provided with the cassette positioning pin device of the present invention. In FIG. 1, reference numerals 17A and 17B denote cassette positioning pins integrally formed at the edge of the long hole 18, and the cassette positioning pins 17A and 17B are integrally formed at the edge of the long hole 18 of the substrate 16. After processing the outer surface of the projected piece into a curved surface, the base of the projected piece is
2) is a top view, FIG. 3 is a front view, FIG. 4 is a sectional view, and FIG. 5 is a side view. FIG.
(A) to (D) show the cassette positioning pins 17A, 1
7B shows a processing step of FIG. 7B. First, as shown in FIG. 6A, a long hole 18 is formed in the substrate 16 in a press punching step, and a protruding piece 19 is formed integrally with a hole edge of the long hole 18.
The protruding piece 19 has a triangular portion 19A, a rectangular portion 1
9B and a connecting portion 19C, which is connected to the edge of the elongated hole 18 by the connecting portion 19C. Next, as shown in FIG. 6B, the protrusion 19 is processed into a curved surface by press crushing except for the outer peripheral portion 19D of the protrusion 19. In this press crushing step, the triangular portion 19A of the protruding piece 19 becomes semi-conical, and the rectangular portion 19B
Is processed into a semi-cylindrical shape. Next, as shown in FIG. 6 (C), the outer peripheral portion 19D of the protruding piece 19 is cut, and the shape of the outer surface is adjusted in a molding step, and burrs on the cut portion are removed. Next, as shown in FIG. 6 (D), the connecting portion 19C of the protruding piece 19 is completed by bending it approximately 90 °. The shape of the cassette positioning pins 17A and 17B completed by performing the above processing is a shape obtained by cutting the conventional cassette positioning pin 9 shown in FIG. 10 in half.

As described above, the substrate 16 in which the cassette positioning pins 17A and 17B are formed integrally with the edge of the long hole 18 so that the outer surfaces thereof are curved is incorporated in the magnetic recording / reproducing apparatus. In the magnetic recording / reproducing apparatus incorporating the substrate 16, when the cassette is transferred horizontally and vertically by the loading mechanism, the cassette positioning pins 17A, 17B are inserted into the holes 4A, 4B of the cassette, and the cassette positioning pins 17A, 17B are inserted. The cassette is positioned by the outer peripheral curved surface of 17B.
Note that the cassette positioning pins 17A, 17A of the above embodiment are used.
B positions the cassette in the arrangement direction of the reels 2A and 2B at the outermost peripheral interval (L) of the cassette positioning pins 17A and 17B, and orthogonally crosses the reel arrangement direction by the external width (M) of the cassette positioning pins 17A and 17B. This is for positioning in the direction of movement.

In the above embodiment, the surfaces of the cassette positioning pins 17A and 17B that do not face each other are defined as outer peripheral curved surfaces, and the cassette is positioned by the outer peripheral curved surfaces. The outer peripheral curved surface may be used, and the cassette may be positioned on the outer peripheral curved surface.

FIGS. 7A and 7B show cross sections of cassette positioning pins 20A and 20B and cassette positioning pins 21A and 21B of another embodiment of the present invention. FIG.
The embodiment shown in (A) has a shape in which the outer surface is triangular and both sides are formed substantially parallel. In this embodiment, the positioning of the cassette in the reel arrangement direction is performed between the triangular tips (L), and the positioning in the direction orthogonal to the reel arrangement direction is performed based on the outer dimensions (M) of both sides. FIG.
In the embodiment shown in (B), the outer surface has an arc shape and both sides are formed substantially in parallel. Positioning in the reel arrangement direction of the cassette is performed between the outermost peripheral portions (L) of the arc shape.
The positioning is performed in the direction orthogonal to the reel arrangement direction with the outer dimensions (M) of both sides.

[0015]

According to the present invention, the cassette positioning pin is formed integrally with the edge of the hole of the substrate according to the present invention. This has the advantage that it is not necessary to manufacture the cassette and that the step of attaching the cassette positioning pins to the substrate is not required.

[Brief description of the drawings]

FIG. 1 is a plan view of a substrate provided with a cassette positioning pin device according to an embodiment of the present invention.

FIG. 2 is a top view of the cassette positioning pin device of the embodiment.

FIG. 3 is a front view of the cassette positioning pin device of the embodiment.

FIG. 4 is a sectional view of the cassette positioning pin device of the embodiment.

FIG. 5 is a side view of the cassette positioning pin device of the embodiment.

FIGS. 6A to 6D are views showing a manufacturing process of the cassette positioning pin device of the embodiment.

7A and 7B are cross-sectional views of a cassette positioning pin device according to another embodiment of the present invention.

FIG. 8 is a plan view of the cassette.

FIG. 9 is a perspective view of a part of a conventional magnetic recording / reproducing apparatus.

FIG. 10 is a front view of a conventional cassette positioning pin.

FIG. 11 is a front view showing a state where a conventional cassette positioning pin is mounted on a substrate.

[Explanation of symbols]

 1 cassette main body 2A, 2B reel 3 magnetic tape 4 hole 16 substrate 17A, 17B cassette positioning pin 18 long hole 19 protruding piece

 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Shuji Nakame 4-3-1 Tsunashima Higashi, Kohoku-ku, Yokohama-shi, Kanagawa Prefecture Inside Matsushita Communication Industrial Co., Ltd. (72) Inventor Kazuo Hatsumi Tsunashima-Higashi, Kohoku-ku, Yokohama, Kanagawa Prefecture 4-3-1, Matsushita Communication Industrial Co., Ltd. (72) Inventor Takashi Ichihara 4-3-1 Tsunashima Higashi, Kohoku-ku, Yokohama, Kanagawa, Japan Matsushita Communication Industrial Co., Ltd. (72) Inventor Hiroki Kobayashi Kanagawa Prefecture 4-1, Tsunashimahigashi, Kohoku-ku, Yokohama-shi Matsushita Communication Industrial Co., Ltd.

Claims (3)

(57) [Claims] 1. A pair of projections formed integrally with a hole edge of a substrate of a magnetic recording / reproducing apparatus and comprising a curved surface portion and a connecting portion having a width smaller than the curved surface portion, are bent at substantially right angles at the connecting portion. A cassette positioning pin device for positioning the cassette by inserting the curved surface portion of each of the projecting pieces into a pair of holes formed in the cassette; 2. A pair of projections formed integrally with a hole edge of a substrate of a magnetic recording / reproducing apparatus and comprising a curved surface portion and a connecting portion narrower than the curved surface portion. The connecting portion is bent substantially at a right angle so that the accuracy of the width and the distance between the curved surface portions of the pair of projecting pieces can be secured, and the curved surface portions of the projecting pieces are formed in a pair of holes formed in a cassette. Cassette positioning pin device that inserts into each and positions the cassette. 3. A pair of projections formed integrally with a hole of a substrate of a magnetic recording / reproducing apparatus and comprising a curved surface portion and a connecting portion having a width smaller than the curved surface portion are bent at substantially right angles at the connecting portion. By ensuring the accuracy of the width of the curved surface portion of each of the projecting pieces and the distance between the curved surface portions of the pair of projecting pieces, the curved surface portion of each of the projecting pieces is formed into a pair of holes formed in a cassette. A method of manufacturing a cassette positioning pin capable of positioning a cassette by inserting the cassette positioning pin into a cassette.