JPH06243601A - Connector for moving body - Google Patents

Abstract

PURPOSE:To reduce the thickness of products by effectively suppressing bulging toward a disk of the curving part of a flexible wiring board according to the movement of a pickup main body. CONSTITUTION:The pickup main body 1 and a circuit board 3 are electrically connected by the flexible wiring board 5, the intermediate part of which is curved to a free state. The pickup main body 1 is provided with a retaining piece 16 inclining in the opposite direction of the disk 2. The bulging toward the disk 2 of the curving part of the flexible wiring board 5 is suppressed by this retaining piece 16, by which the projection toward the disk 2 from the front surface of the pickup main body 1 is prevented.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a moving body such as an optical pickup or a magnetic head which mainly moves along a disk surface to read information recorded on the disk, and particularly to the moving body side and the movable body side. The present invention relates to a connecting device for electrically connecting a supporting side supported by a flexible wiring board.

[0002]

2. Description of the Related Art Conventionally, as a connecting device for a moving body of this type, for example, there is an optical pickup connecting device, and the connecting device is, as shown in FIG. The disk 2 is supported by a guide or the like so as to be movable in the radial direction along the surface of the disk 2, and the intermediate portion is freely curved between the connector 4 of the circuit board 3 on the pickup body 1 side and the device body side. The flexible wiring board 5 is electrically connected, and the end portion of the flexible wiring board 5 on the pickup body 1 side is wired along the upper surface of the pickup body 1 by the pressing plate 6, and the pickup body 1 is connected by the pressing plate 6. The pressing piece 7 extending straight to the side suppresses the bulging of the curved portion of the flexible wiring board 5 toward the disk 2 surface.

[0003]

By the way, as is clear from the description of FIG.
The bulge of the curved portion of the flexible wiring board 5 greatly changes as it reciprocates in the radial direction of the arrow (direction of arrow X).
Due to the bulge, the disk 2 and the flexible wiring board 5
Could lead to the fatal problem of contact.

However, in the conventional connecting device, a part of the pressing plate 6 is made to protrude straight from the side of the pickup body 1 to form the pressing piece 7, and the pressing piece 7 causes the flexible wiring board 5 to face the disk 2 surface. Although it is configured to suppress the bulge of the flexible wiring board 5 toward the disc 2 surface side as much as possible, the bulge of the flexible wiring board 5 in the direction of the disk 2 surface cannot be suppressed, and the flexible wiring board 5 protrudes from the upper surface of the pickup body 1 by a dimension B at the maximum. In designing, in addition to the dimension A from the circuit board 3 to the upper surface of the pickup body 1, the dimension B must be taken into consideration, which is a great obstacle to making the product itself thin. Further, if the pressing piece 7 is made dimensionally long, it is possible to surely prevent the curved portion of the flexible wiring board 5 from bulging toward the disc 2 surface. However, the material of the pressing plate 6 or the movement of the pickup body 1 is prevented. Therefore, the dimension of the pressing piece 7 is limited in terms of securing a space for the pressing piece 7.

Further, in the conventional connecting device, the pressing piece 7
Since the leading edge of the above contacts the flexible wiring board 5, the flexible wiring board 5 may be damaged and the insulation may be damaged.

[0006]

SUMMARY OF THE INVENTION The present invention has been made for the purpose of solving the above-mentioned problems, and in the connecting device for a moving body according to claim 1, the moving body is placed on an object surface having a facing positional relationship therewith. The movable side is supported movably along, and the supporting side and the moving body side for supporting the moving body are electrically connected by a flexible wiring board having an intermediate portion curved in a free state, and the flexible wiring board is connected to the moving body side. A pressing piece that suppresses bulging of a curved portion in the object plane direction is provided, in which the pressing piece is tilted in a direction opposite to the object plane and laterally projected from the moving body.

In the connecting device for a moving body according to the second aspect, the tip of the pressing piece is folded back in the direction of the object plane.

[0008]

According to the structure described in claim 1, the bulging of the curved portion of the flexible wiring board in the object plane direction due to the movement of the moving body can be effectively suppressed by utilizing the inclination of the pressing piece, and the bulge can be prevented. The size can be made smaller than before, which can contribute to making the product thinner. Further, according to the second aspect of the present invention, the contact between the pressing piece and the flexible wiring board is performed on the curved surface, so that there is no fear of damaging the flexible wiring board and impairing the insulation. Further, since the pressing piece is inclined in the direction opposite to the object surface and the tip end is folded back in the object surface direction, the tip end does not protrude above the upper surface of the moving body and does not hinder the reduction in thickness.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The embodiments of the present invention shown in FIGS. 1 to 3 will be described in detail below. FIG. 1 is an explanatory sectional view showing a connecting device of an optical pickup according to an embodiment of the present invention, and FIG. 2 is an exploded perspective view showing a main part of the optical pickup.
1 and 2, parts common to those in FIG. 4 are designated by common reference numerals.

In this embodiment, the pickup body 1 which is a moving body is provided with a light source 8 such as a semiconductor laser and also contains optical system parts 9-11. The flexible wiring board 5 is for mounting the light receiving portion 12 and electrically connecting the light source 8 together with the light receiving portion 12 to the device body side (support side), and the connector insertion terminal portion 13 is connected to the circuit board 3 Insert and connect to connector 4. Thus, the flexible wiring board 5 is arranged along the upper surface of the pickup body 1 in a state where it is connected to the light source 8 and the light receiving portion 12 is arranged at a predetermined position of the pickup body 1, and is held by the pressing plate 6. It is something. Although the pickup body 1 is equipped with an objective lens, its actuator, and other optical system components in addition to the above components, they are omitted in the drawings because they are not directly related to the gist of the present invention. is there.

The pressing plate 6 has a plurality of elastic legs 14, which are attached by elastically engaging the elastic recesses 14 with the engaging recesses 15 of the pickup body 1 respectively, and thus the flexible wiring board 5 is provided. The pickup body 1
Hold it on the upper surface of. Also, this holding plate 6
Forms a pressing piece 16 having an appropriate elasticity that projects outward from the side surface 1a of the pickup body 1. The pressing piece 16 is located below the intermediate point 16a on the tip side, that is, the disc (object) 2 It is inclined in the direction opposite to the surface, and the tip thereof is folded back toward the disk 2 surface, and the tip of the folded portion 16b is flush with the pressing plate 6 or remains at a position lower than it.

In the above structure, the pickup body 1
Although the bulge of the curved portion of the flexible wiring board 5 changes with the movement of, the bulge in the direction of the disc 2 is suppressed to be small at the tip portion of the pressing piece 16 inclined downward, as is apparent from FIG. , Pickup body 1
It is possible to avoid the protrusion of the product on the upper surface, and it is possible to reduce the thickness of the product by the dimension B in the related art.

Further, the pressing piece 16 comes into contact with the flexible wiring board 5 on a curved surface due to the formation of the folded-back portion 16b, so that there is no possibility of damaging the flexible wiring board 5 and it is possible to avoid a serious situation of impairing insulation. it can.
In addition, since the pressing piece 16 has the tip inclined downward, the folded-back portion 16b does not project above the upper surface of the pickup body 1, which does not hinder the thinning of the product.

FIG. 3 is a cross-sectional view showing an optical pickup connecting device according to another embodiment of the present invention. The pressing piece 16 is not provided with a folded-back portion, and the tip thereof is flexible wiring board 5.
It is designed to come into contact with. Thus, according to this embodiment, similarly to the previous embodiment, the bulging of the curved portion of the flexible wiring board 5 in the direction of the disk 2 can be effectively suppressed, and the product can be made thinner. . However, in the case of this embodiment, it is desirable to take measures such as rounding the tip of the pressing piece 16 in order to protect the flexible wiring board 5.

In the above embodiment, the present invention has been described by taking the optical pickup as an example, but the present invention can be applied to a magnetic head or the like in a magnetic disk device, and the moving body is placed on the inner surface of the casing. It can also be applied to an apparatus or the like that needs to be moved along and the flexible wiring board must not come into contact with the inner surface of the casing due to the movement.
Besides, the present invention is not limited to the embodiments described above and shown in the drawings, and can be appropriately modified and implemented without departing from the scope of the invention.

[0016]

As described above, according to the present invention, the bulge in the curved portion of the flexible wiring board can be effectively suppressed by simply changing the shape of the pressing piece provided on the moving body.
It is possible to prevent protrusion in the direction of the object that is in the facing position relationship with the moving body, and it is possible to make the product thinner than in the conventional case where it is necessary to consider the amount of protrusion. Further, by folding back the tip of the pressing piece, there is no risk of damaging the flexible wiring board and impairing its insulation, and it is possible to provide an excellent flexible wiring board in terms of protection.

[Brief description of drawings]

FIG. 1 is a sectional view showing an optical pickup connection device according to an embodiment of the present invention.

FIG. 2 is an exploded perspective view showing a main part of the optical pickup.

FIG. 3 is a sectional view showing an optical pickup connection device according to another embodiment of the present invention.

FIG. 4 is a cross-sectional view showing a conventional optical pickup connection device.

[Explanation of symbols]

 1 pickup body (moving body) 2 disk (object) 3 circuit board (supporting side) 4 connector 5 flexible wiring board 6 retainer plate 13 connector insertion terminal 16 retainer piece 16b folded portion

Claims (2)

[Claims] 1. A flexible structure in which a movable body is movably supported along an object surface in a positional relationship with the movable body, and a support side for supporting the movable body and a movable body side have a middle portion curved in a free state. In a structure in which a pressing piece for electrically connecting with a wiring board is provided on the side of the moving body to suppress the bulging of the curved portion of the flexible wiring board in the object plane direction, the pressing piece is provided in a direction opposite to the object plane. A connecting device for a moving body, which is inclined and protruded laterally from the moving body. 2. The connecting device for a moving body according to claim 1, wherein the tip of the pressing piece is folded back in the object plane direction.