JPH0445197Y2 - - Google Patents

Description

[Detailed description of the invention] [Summary] Regarding the fixing structure of the band-shaped FPC that connects the movable arm that drives the head of a magnetic disk drive and the connector fixed to the housing side, the head Multiple parallel strips connect the arm that drives the motor and the connector attached to the housing side.
In the FPC fixing structure of a magnetic disk device that fixes each intermediate portion of the FPC to the housing side, the base plate has a plurality of protruding receiving plates, an elastic plate has a hole through which the receiving plates are inserted, and the receiving plates are inserted into the FPC fixing structure of the magnetic disk device. a mounting plate having a hole to prevent the elastic plate from falling off, and a receiving plate falling prevention means that passes through the hole in the elastic plate and the hole in the mounting plate, and a hole is formed in each FPC, and the elastic plate and each FPC and a mounting plate are attached and integrally fixed to each other by the falling-off prevention means, and the mounting plate is fixed to the housing side.

[Industrial application field]

The present invention relates to a fixing structure for a strip-shaped FPC (flexible printed circuit board) that connects a movable arm that drives the head of a magnetic disk device and a connector fixed to a housing side.

In a magnetic disk drive, a head for writing/reading data on a designated track of a rotating disk is fixed to an arm of a linear or rotary positioner, and the arm is driven to seek a track on the disk surface. Data is transmitted from the head to an external control device via a connector attached to the housing (base). The data transmission path within this housing is between the arm and the connector.
Connected with FPC. This kind of FPC needs to be fixed to the arm at a predetermined radius of curvature along the inner wall of the housing so as not to narrow the mounting space inside the housing, and the middle part must maintain the predetermined position and radius of curvature even if the arm moves. It is necessary to fix it to the housing side so that the

[Conventional technology]

The fixing structure of the FPC in conventional magnetic disk devices consists of strips arranged in parallel in multiple stages.
The structure was such that each FPC was positioned at a fixed position and fixed to the housing side with screws.

[Problem that the invention attempts to solve]

In the conventional FPC fixing structure, each FPC must be aligned and screwed together, so installation errors are likely to occur and the work is very troublesome.

The present invention has been made in view of the above-mentioned drawbacks of the prior art, and it is an object of the present invention to provide an FPC fixing structure for a magnetic disk device that securely fixes an FPC with high precision and has good workability.

[Means for solving problems]

In order to achieve the above object, the present invention includes a substrate having a plurality of protruding receiving plates, an elastic plate having a hole through which the receiving plates are inserted, a mounting plate having a hole through which the receiving plates are inserted, and the elastic plate. A hole is formed in each FPC, and an elastic plate and each FPC and the mounting plate are attached to the receiving plate of the board to prevent the falling of the FPC. They are integrally fixed to each other by means, and the mounting plate is fixed to the housing side.

[Effect]

Each FPC is attached to a receiving plate of the board, and is pressed and held by the mounting plate toward the board via an elastic plate made of rubber or the like similarly attached to the receiving plate. At this time, the receiving plate that has passed through each FPC, the elastic plate, and the mounting plate is held in a penetrating state by falling-off prevention means such as a pin, and each FPC, elastic plate, and mounting plate are integrated. In this state, fix the mounting plate to the housing side.

〔Example〕

FIG. 1 is an exploded configuration diagram of an embodiment of the present invention. A plurality of receiving plates 2 are provided in a protruding manner on a substrate 1. A fixing hole 3 is formed at the tip of each receiving plate 2. A fixing piece 6 is provided on the band-shaped FPCs 4a and 4b, and a hole 7 through which the receiving plate 2 is inserted is formed in the fixing piece 6. The rubber plate 5 having the hole 12 through which the receiving plate 2 is inserted is the FPC 4a inside.
and the outer FPC 4b. Reference numeral 8 denotes a mounting plate, which has a hole 9 through which the receiving plate 2 is inserted and has an L-shaped cross section with a mounting piece 8a projecting at a substantially right angle, and a mounting hole 10 is formed in this mounting piece 8a. 11 is a presser pin.

When fixing the FPC, first the FPC 4a is attached to the receiving plate 2 at a predetermined position on the board 1 via the hole 7 of the FPC 4a. Next, the rubber plate 5 is attached to the receiving plate 2, and the FPC 4b is further attached to the outside thereof through the hole 7. Next, this mounting plate 8 is attached to each receiving plate 2 through the hole 9 of the mounting plate 8, and finally, the pin 11 is inserted into the hole 3 of the receiving plate 2 protruding from the hole 9 of the mounting plate 8. Hold it fixed. In this way multiple
After integrating the FPC into the mounting plate 8 in a predetermined positional relationship, the mounting plate 8 is inserted through the hole 10 of this mounting plate 8.
screw onto the housing of the magnetic disk device.

Figures 2 and 3 show the FPC attached to a magnetic disk device. A read/write head 15 is provided at the tip of each arm 14 in multiple stages that rotates around a pivot 13. A connector 17 is provided on the base 20a of the housing 20. 18 is a printed board. Each FPC4a,
4b has an arm attachment part 16 at one end, and this part is attached to the arm 14. The head 15 is connected to this arm attachment part 16. The other ends of the FPCs 4a and 4b are connected to the connector 17. This FPC
The intermediate portion between 4a and 4b is fixed to the housing 20 as the fixing portion 19 as described above. 21 indicates the entire magnetic disk device.

[Effect of idea]

As explained above, in the present invention, after a plurality of FPCs are mounted on the board 1 and fixed to the mounting plate 8, this mounting plate is fixed to the housing, so the receiving plate 2 of the FPC is fixed in advance to a predetermined position. By forming it at the position, a plurality of FPCs can be easily fixed at a predetermined position. In addition, since the FPC is fixed via the rubber plate 5, the insulation between the FPCs before and after the rubber plate is maintained, and the pin 11 is used to connect the FPC with the FPC pressed against the board side by elastic force.
It can be held fixed and securely fixed in place.

[Brief explanation of the drawing]

FIG. 1 is an exploded configuration diagram of an embodiment of the invention, FIG. 2 is a plan view of an application example of the invention, and FIG. 3 is an elevational view of an application example of the invention. 1... Board, 2... Receiving plate, 3, 7, 9, 12
... Hole, 4, 4a, 4b ... FPC, 5 ... Rubber plate, 8 ... Mounting plate, 14 ... Arm, 15 ... Head, 17 ... Connector, 20 ... Housing.

Claims (1)

[Claims for Utility Model Registration] 1. Each intermediate portion of a plurality of parallel strip-shaped FPCs 4, 4a, and 4b connecting the arm 14 that drives the head 15 and the connector 17 attached to the housing 20 side is connected to the housing 20 side. The FPC fixing structure for a magnetic disk device includes a substrate 1 having a plurality of protruding receiving plates 2, and an elastic plate 5 having holes 12 through which the receiving plates 2 are inserted.
, a mounting plate 8 having a hole 9 through which the receiving plate 2 is inserted, a hole 12 in the elastic plate 5 and the mounting plate 8.
A hole 7 is formed in each FPC, 4, 4a, 4b, and an elastic plate 5 is formed in the receiving plate 2 of the substrate 1.
A fixing structure for an FPC, characterized in that the FPCs 4, 4a, 4b and a mounting plate 8 are mounted and integrally fixed to each other by the drop-off prevention means, and the mounting plate 8 is fixed to the housing 20 side. 2. The falling-off prevention means comprises a fixing hole 3 provided at the tip of the receiving plate 2 and a holding pin 11 elastically inserted into the hole 3. Fixing structure of FPC described in Section 1. 3. A mounting piece 8a having a mounting hole 10 is provided at the side edge end of the mounting plate 8 so as to protrude almost at right angles, and the mounting plate 8 is screwed to the housing 20 side through the mounting hole 10 of the mounting piece 8a. The FPC fixing structure according to claim 1 or 2, wherein the FPC is fixed.