JPH0538445Y2 - - Google Patents

Description

[Detailed description of the invention] [Field of industrial application] This invention relates to a fixing device for a flexible printed circuit board (hereinafter referred to as FPC), which is attached to a carriage in a magnetic transducer for recording media. The present invention relates to an FPC fixing device for transmitting converter signals.

[Problems to be solved by conventional techniques and ideas] Conventionally, this kind of FPC fixing device is known to attach the FPC to the side wall of the carriage using an adhesive. In such cases, there were defects such as the adhesive part peeling off or wire breakage due to the movement of the carriage. Therefore, a technical problem arises that must be solved in order to obtain an FPC fixing device that can securely fix the FPC without using adhesives and that will not break accidentally due to the movement of the carriage. .

[Means for solving problems]

This invention was proposed as a solution to the above-mentioned problems, and the FPC is brought into contact with the carriage plate provided on the carriage of the magnetic transducer for recording media. Hold it from the back of the carriage plate.
An FPC clamp is provided, further, one edge of the FPC clamp is formed into a projecting edge shape, and an end surface of the carriage plate is brought into contact with the inner surface of the projecting edge, and
The end face of the projecting edge is formed in a rounded shape, and
The central piece of the FPC clamp that protrudes outward from the surface of the carriage plate and presses the surface of the FPC that is in contact with the surface of the carriage plate has a rounded edge direction. The present invention aims to provide an FPC fixing device characterized by the following features.

[Effect]

The carriage to which the magnetic transducer for recording media is attached is equipped with a carriage plate, and the FPC is brought into contact with the side of this carriage plate, and is clamped from both the surface of the FPC and the back of the carriage plate. Insert the FPC clamp from the top of the carriage plate to clamp the FPC and carriage plate. At this time, the FPC clamp is arranged so that the outer end of the carriage plate comes into contact with the inner surface of the protruding edge provided on one side of the FPC clamp. Therefore,
is in contact with the surface of this carriage plate.
The FPC rides on the rounded surface of the protruding edge of the FPC clamp and is connected to a signal transmission device.
Further, the central piece of the FPC clamp is formed to press the FPC that is in contact with the surface of the carriage plate against the surface of the carriage plate, thereby preventing the FPC from accidentally coming off from the carriage plate. At this time, it goes without saying that the attached state is maintained even during movement of the FPC carriage, but as the carriage moves, the FPC bends at the clamp portion. However, the parts where the bending action of the FPC occurs is not at the end face of the carriage plate, but at the protruding edge and the center piece of the clamp, and since these are each formed in a rounded shape, the bending action at right angles is not possible. This will not occur, and therefore, the FPC will not be disconnected.

〔Example〕

An embodiment of this invention will be described below in detail with reference to the accompanying drawings. In FIG. 1, a carriage 1 is provided with a fixed transducer 2, and a support arm 3 is swingably provided from one end of the carriage 1, and a support arm 3 is swingably attached to the fixed transducer 2. A dynamic side transducer (not shown) is provided. Further, a carriage plate 4 having an upright portion 4a is attached to the carriage 1, and one end portion of the carriage plate 4 is erected upward 4a in order to secure the FPC 5 thereto. Further, the FPC 5 is connected to the converter and a signal transmission side device (not shown), and transmits the signal of the converter to the signal transmission side device. Further, the carriage plate 4
An FPC configured such that the carriage plate 4 can be inserted into the upper surface of the upright portion 4a and clamped by pressing the carriage plate 4 from both the front and back sides of the carriage plate.
A clamp 6 is provided. This FPC clamp 6 has an inverted side surface, a back plate 6a that is L-shaped, and a large cutout 6b in the center of the back plate 6a.
has been done. The notch 6 of the back plate 6a
A center piece 6c of the FPC clamp 6 is protruded toward the bottom approximately at the center of the back plate 6a and the top plate 6.
d is formed into the above-mentioned inverted letter shape. Furthermore, a central piece 6 facing the surface of the back plate 6a.
The distance from the surface of c is such that the FPC 5, which is in contact with the upright piece 4a of the carriage plate 4 held between the surface of the back plate 6a and the center piece 6c, accidentally comes off when held by the FPC clamp 6. The distance is such that they can be pressed together without any pressure.

Further, since the back plate 6 is formed in an L-shape when viewed from the bottom as described above, the outer end surface 4b of the upright portion 4a of the carriage plate 4 is aligned with the protrusion provided on one side of the back plate 6a. The protrusion 6e is brought into contact with the inner surface of the edge 6e, and the end surface of the protruding edge 6e is formed to protrude from the surface of the upright portion 4a of the carriage plate 4. Furthermore, the end surface of the upright portion 4a is formed into a radius R. Moreover, the central piece 6
The outer side of c, that is, the surface on the side of the projecting edge 6e is also formed into a radius R.

The tip of the FPC 5 is bonded to the end face of the carriage 1 with adhesive 7 in order to be connected to the converter, and is wound along the side of the carriage 1 while being attached to the stand of the carriage plate 4. Installation part 4b
is placed in contact with the side of the Therefore, the FPC clamp 6 is held from the upper surface of the upright portion 4b so that its center piece 6c is
It is fitted so as to press the surface of the FPC 5 into contact. Of course, the outer end surface 4b of the upright piece 4a has a protruding edge 6.
It is fitted so as to come into contact with the inner surface of e. In such a case, the FPC 5 is clamped by the FPC clamp 6 so that it will not accidentally fall off from the upright piece 4a of the carriage plate 4. Further, the FPC 5 is connected to a signal transmission side device (fixed shaft), and the carriage 1 moves in accordance with the progress of the recording medium element in order to transmit the signal of the recording medium element. This movement action acts as a bending action at the clamp portion of the FPC 5. Therefore, FPC5
The bending action is performed using the outer side of the FPC clamp 6, that is, the protruding edge 6e, and the outer side of the central piece 4c, that is, the side surface of the central piece 4c on the side of the protruding edge 6e, as the fulcrum of the bending operation. . The projecting edge portion 6e and the center piece 4c, which serve as a fulcrum for the bending action, are both formed into a radius R, and the upright portion 4a of the carriage plate 4 having an angular end surface is formed on the projecting surface. Since it is formed lower than the edge 6e, the angular end face of the upright part 4a does not come into direct pressure contact with the FPC 5, but only with the R surface, and uses this as the fulcrum of the bending action. become. Therefore, the bending action of the FPC 5 caused by the movement of the carriage 1 will not cause the FPC 5 to break, and there will be no risk of wire breakage.

[Effect of idea]

This invention, as detailed in the above example,
Since the FPC is brought into contact with the surface of the upright part of the carriage plate and is clamped to the upright part with the FPC clamp, there is no chance of it slipping out accidentally, and furthermore, the movement of the carriage can be easily controlled. hand
The bending action of the FPC works, and the fulcrum of this bending action is the projecting edge and center piece of the FPC clamp, and
Since both of these are rounded, there is no possibility that the FPC will break or break due to the bending action. Furthermore, unlike in the past, adhesive parts do not peel off and interfere with carriage operation, and signal transmission by FPC is extremely smooth.

Furthermore, the present invention can be modified in various ways without departing from the spirit of the invention, and it goes without saying that this invention extends to those modifications.

[Brief explanation of the drawing]

The figures show one embodiment of the present invention. Figure 1 is a partially cutaway slope view of the carriage part, Figure 2 is a slope view of the FPC clamp, and Figure 3A is when the FPC clamp is fitted to the carriage plate. FIG. 4 is a cross-sectional view taken along line A--A in FIG. 3B, and FIG. 5 is a cross-sectional view taken along line B--B in FIG. Description of symbols, 1... Carriage, 4... Carriage plate, 4a... Standing part of carriage plate 4, 5... FPC, 6... FPC clamp, 6a
...back plate, 6c...center piece, 6e...projection, R
……R.

Claims (1)

[Scope of utility model registration request] A flexible printed circuit board 5 is brought into contact with a carriage plate 4 having an upright portion 4a provided at the end of the carriage 1 of the magnetic transducer for recording media, and a flexible printed circuit board 5 is in contact with this surface as well as the upright portion of the carriage plate 4. A flexible printed circuit board clamp 6 is provided to clamp the mounting portion 4a from the back side, and further,
One end edge of the flexible printed circuit board clamp 6 is formed into a projecting edge shape, and the end surface of the upright portion 4a is in contact with the inner surface of the projecting edge portion 6e, and the end surface of the projecting edge portion 6e is rounded. A flexible printed circuit is formed in a shape, protrudes outward from the surface of the upright portion 4a, and presses against the surface of the flexible printed circuit board 5 that is in contact with the surface of the upright portion 4a. A device for fixing a flexible printed circuit board, wherein the central piece 6c of the board clamp 6 is rounded in the direction of the projecting edge 6e.