JPH10284861A - Structure for mounting flexible wiring board - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent the limit of rocking of a mounting portion for an electrically moved member which can rock in the direction of a plane formed on a part of a substrate without increasing cost and complicating structure. SOLUTION: A connecting portion 2 of a flexible wiring board 1 mounted on the bottom portion of 101 of a case 100 of a combination A is connected to a movement through the back of a movement mounting portion 102 integrated at the end of a strip continuous portion 4 extending from the body portion 3, and a part 5 of the continuous portion 4 is mated with a recess 6 formed at the bottom portion of 101 to mount loosely, thus the enlargement of expansion of the continuous portion 4 enables the connecting portion 2 to increase the following up of the movement mounting portion 102.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an assembling structure of a flexible wiring board attached to, for example, a back surface of a combination meter case.

[0002]

2. Description of the Related Art As shown in FIG. 3, a combination meter A is constructed such that various instruments such as a speedometer 200, a tachometer 300, a water temperature gauge 400, and a fuel level gauge 500 are incorporated in a case 100.

[0003] As such a combination meter A, from the viewpoint of improving the assemblability, the dial and movement of the various instruments 200, 300, 400, and 500 are integrally mounted on a case 100 in a single light guide plate. An assembled one has been proposed (Japanese Patent Laid-Open No. 8-193840).
No.).

When the combination meter A is assembled to the case 100 in the state of being integrally assembled as described above, for example, if the combination meter A is assembled based on the speedometer 200, the tachometer 300, the water temperature gauge 400, and the fuel The dimensional tolerance of the fuel gauge 500 increases;
As shown in FIG. 4, the light guide plate 104 is also provided in each of the movements 103 of the instruments 200, 300, 400, and 500.
, The fitting tolerance of the fitting part b with the bottom 101 of the case 100, and the fitting tolerance of the fitting part c with the receptacle setting terminal 105 and the bottom 101. And that the fitting portion d between the light guide plate 104 and the case 100 (see FIG. 5A) has a fitting tolerance.
In consideration of the case where the tachometer 300, the water temperature gauge 400, and the fuel gauge 500 cannot be assembled to the bottom portion 101, a part of the bottom portion 101 is formed as a movement mounting portion that can swing in the plane direction. It is configured.

[0005] That is, as shown in FIG.
The bottom 101 to which the movement 103 is attached is
In order to absorb the above-mentioned tolerance, it is formed on a movement mounting portion 102 which can swing in the plane direction (FIG. 5).
(B)). The mounting portion 102 is supported in four holes 107 formed in the bottom portion 101 via four elastic support portions 102a.

The combination meter A is
A plurality of movements 1 assembled on one light guide plate 104
.. Can be mounted on the surface of the bottom 101 of the case 100 by adjusting the position of the mounting portion 102, and the flexible wiring board 110 mounted on the back of the bottom 101 is electrically connected to each movement 103. It is configured to be connected to.

At this time, the connecting portion 112 of the flexible wiring board 110, which is located on the back surface of the mounting portion 102 and is connected to the movement 103 mounted on the mounting portion 102, is connected to the flexible wiring board 110 as shown in FIG. Is formed integrally with the distal end of a continuous portion 113 that extends shortly from the main body portion 111. Connection 11 formed in this way
2 is secured to some extent by the expansion and contraction of the flexible wiring board 110 itself, and can follow the position adjustment of the mounting portion 102.

[0008]

However, in the conventional mounting structure of the flexible wiring board 110, the sum of the above-mentioned various tolerances generated when the combination meter A is mounted becomes large, and the swing amount of the mounting portion 102 becomes large. When the need arises, the connecting portion 112 cannot follow the expansion and contraction limit of the flexible wiring board 110, and rather restricts the swing of the mounting portion 102,
Despite having a structure (attachment portion 102) that absorbs the above-mentioned various tolerances, there is a problem that the effect cannot be sufficiently exhibited.

Therefore, the present invention restricts the swing of the electric member mounting portion which can swing in the plane direction formed on a part of the substrate without increasing the cost and complicating the structure. It is an object of the present invention to provide a flexible wiring board assembly structure that does not have any.

[0010]

In order to achieve the above object, according to the present invention, a part of a substrate is formed on an electric member mounting portion which can swing in a plane direction, and a surface of the electric member mounting portion is formed. In the assembly structure of a flexible wiring board in which a flexible wiring board attached to the back surface of the substrate is electrically connected to the electric member attached to the board, a connection portion of the flexible wiring board extends from a main body of the flexible wiring board. Formed integrally with the leading end of the band-shaped continuous part, connected to the electric member from the back side of the electric member mounting part, and a part of the continuous part is formed in a recess formed in the substrate in a loose state. It is characterized by being fitted.

According to the first aspect of the present invention, when the mounting position of the electric member to the substrate is shifted from the standard position, the electric member mounting portion is swung in accordance with the shift amount to adjust the position. The electric member can be attached to the electric member attaching portion after the adjustment, and the connecting portion is pulled out from the concave portion of the substrate or into the concave portion of the substrate according to the amount of displacement, so that the continuous portion of the flexible wiring board is connected. It is possible to follow the swing of the electric member mounting portion, whereby the connection portion can be connected to the electric member mounted on the electric member mounting portion without difficulty.

According to a second aspect of the present invention, there is provided the flexible wiring board assembling structure according to the first aspect, wherein a root portion of the continuous portion is fixed to a fixing pin projecting from a back surface of the substrate. It is characterized by having.

Therefore, in the invention according to the second aspect, since the base of the continuous portion of the flexible wiring board is fixed to the fixing pin, the flexible wiring board is flexible regardless of the swing of the connecting portion formed at the tip of the continuous portion. The main body of the wiring board can be secured at the standard position.

According to a third aspect of the present invention, there is provided an assembly structure of the flexible wiring board according to the first or second aspect, wherein the substrate is a bottom portion of a case of a combination meter, and the electric member is a single conductive member. It is a movement of various instruments that is combined with the light plate and incorporated in the case.

According to the third aspect of the present invention, when the movements of various instruments are subassembled into one light guide plate and incorporated in the case, a tolerance is generated between the movement of a certain instrument and the case, and the movement is moved to the case. When it is not possible to attach the movement to the standard position, the swingable movement attachment portion formed at the bottom of the case is swung to adjust the position, and the movement can be attached to the adjusted movement attachment portion, and the flexible wiring The connecting portion can be made to follow the swing of the mounting portion by pulling out the continuous portion of the plate from the recess formed in the bottom of the case in accordance with the swing of the movement mounting portion, or pulling the connection portion into the recess. Thereby, the connection portion can be connected to the movement attached to the attachment portion without difficulty.

[0016]

Embodiments of the present invention will be described below with reference to the drawings.

FIGS. 1 and 2 show an assembling structure of a flexible wiring board as an embodiment of the present invention applied to a combination meter A similar to the conventional example. Therefore, the same components as those in the conventional example are denoted by the same reference numerals and will be described below.

In this flexible wiring board mounting structure, a part of the bottom (substrate) 101 of the case 100 is formed on a movement (electric member) mounting portion 102 which can swing in the plane direction. Movement 1 attached to
03, the flexible wiring board 1 attached to the back surface of the bottom 101 is electrically connected to the overall structure.

At this time, the flexible wiring board 1 has the connecting portion 2 integrally formed at the tip end of the strip-shaped continuous portion 4 extending from the main body 3 of the flexible wiring board 1 and the mounting portion 10.
2 is connected to the movement 103 from the back side, and a part 5 of the continuous portion 4 is fitted to the concave portion 6 formed in the bottom portion 101 in a loose state and attached to the back surface of the bottom portion 101.

[0020] Combination meter A of the present embodiment
Are speedometer 200 and tachometer 3
00, the water temperature gauge 400, and the fuel gauge 500 (see FIG. 3) as a single
4, the tachometer 300 on one side, the water temperature gauge 400, and the fuel residue on the other side, which have a large dimensional tolerance when assembled with the speedometer 200 as a reference. A movement mounting part 102 is formed on the bottom part 101 of the corresponding part of the meter 500. 1 and 2 show a tachometer 30 on one side.
0, only the mounting part of the water temperature gauge 400 is shown, but a movement mounting part 102 is similarly formed on the bottom part 101 of the fuel gauge 500 on the other side, which is not shown in the drawing.
At this time, the movement of the speedometer 200 is at the bottom 1
01 standard position.

The movement mounting portion 102 is supported by four elastic supporting portions 102a in the same manner as in the prior art, and has a bottom portion 101a.
Are formed in the hole 107 of the elastic support portion 102a.
The hole 107 is formed so as to be able to swing in the same direction by a load acting in the direction a or b acting against the elastic force (see FIG. 2B).

And such a movement mounting portion 10
2, a speedometer 200, a tachometer 300, a water temperature gauge 400, and a fuel level meter 500.
The subassembly in which the letter plate and the movement 103 are integrated with one light guide plate 104 is attached to a speedometer 200
Assemble based on At this time, the tachometer 300,
Each of the movements 103 of the water temperature gauge 400 and the fuel gauge 500 is provided with a corresponding one of the movement mounting portions 10.
2 are swung in the a-direction or the b-direction in accordance with the respective dimensional tolerances to absorb the dimensional tolerances, and then assembled on the surface side of the corresponding movement mounting portion 102.

The connection 2 to the movement 103 on the flexible wiring board 1 is
02 are formed corresponding to the respective portions of the flexible wiring board 102, and are formed so as to substantially cover the movement mounting portion 102. It is formed integrally with the leading end of the belt-shaped continuous portion 4 formed sufficiently longer than the desired length.

The flexible wiring board 1 is fixed by fitting a fixing hole formed in the flexible wiring board 1 into a fixing pin 7 protruding from the back surface of the bottom portion 101 of the case 100. The continuous portion 4 has its root portion fixed by the fixing pin 7 protruding from the back surface of the bottom portion 101, and a part 5 of the surplus portion is loosened. And is fitted and attached to the concave portion 6 formed in the bottom portion 101. The connection portion 2 is electrically connected to a movement 103 attached to the surface of the movement attachment portion 102 by a portion pulled in by the receptacle setting terminal 105 fitted from the back side of the bottom portion 101 of the case 100.

In this manner, the above-described structure for assembling the flexible wiring board is obtained.

According to this assembling structure, the continuous portion 4 of the flexible wiring board 1 is formed sufficiently longer than the actually required length, and a part 5 of the surplus portion is slackened to make the bottom portion 1
Since the fitting portion is fitted into the recess 6 formed in the first mounting portion 01, even if the dimensional tolerance is increased and the swing distance of the movement mounting portion 102 is increased, the connection portion 2 is positioned by extending the part 5 which is in a slack state. It can easily follow the adjusted movement mounting portion 102, and when the dimensional tolerance is small and the swinging distance of the movement mounting portion 102 is small, the slack state of the part 5 is increased to accommodate the movement in the concave portion 6. It is possible to easily follow the movement mounting portion 102 after the position adjustment. As described above, in the present assembling structure, the stretchability of the continuous portion 4 is expanded to enhance the followability of the connection portion 2 to the movement attachment portion 102, and thereby the function of the movement attachment portion 102 can be improved without restricting the swing of the movement attachment portion 102. It can be fully demonstrated.

In addition, the structure for assembling the flexible wiring board can be configured by using the conventional components without increasing the number of parts due to the addition of other members, so that the cost is increased and the structure is complicated. There is no accompanying.

Further, according to this assembling structure, since the continuous portion 4 of the flexible wiring board 1 is fixed at its root by the fixing pin 7 projecting from the back surface of the bottom portion 101, it is formed at the tip of the continuous portion 4. Despite the swing of the connecting portion 2, the main body 3 of the flexible wiring board 1 can be secured at the standard position, and the electrical connection between the main body 3 and other members is not hindered.

The present invention is not limited to a combination meter. A subassembly in which a plurality of motorized members are mounted on one member is mounted on a board on which a flexible wiring board is assembled, and the flexible wiring board is connected to a plurality of subassemblies. The present invention can be applied to any structure that causes a dimensional tolerance between the plurality of electric members and the substrate when the electric members are electrically connected.

[0030]

As described in detail above, according to the present invention, the following effects can be obtained.

That is, according to the first aspect of the present invention,
The connecting portion formed at the tip of the continuous portion is pulled out of the concave portion of the substrate in accordance with the swing of the electric member attaching portion, or is drawn into the concave portion in accordance with the swing of the electric member attaching portion. Since it is possible to follow the movement, the function can be sufficiently exhibited without restricting the swing of the electric member mounting portion for absorbing the dimensional tolerance, and the component by adding other members Since there is no increase in the number of points and the configuration can be made by using the conventional components as they are, there is no accompanying cost increase and complicated structure.

According to the second aspect of the present invention, the base of the continuous portion of the flexible wiring board is fixed to the fixing pin, so that the connection portion formed at the tip of the continuous portion swings. The main body of the flexible printed circuit board can be secured at the standard position, so that the electrical connection between the electric member having the dimensional tolerance and the connecting portion of the flexible printed circuit board can be electrically connected between the other members and the flexible printed circuit board. This can be done without interfering with the connection.

According to the third aspect of the present invention, from the viewpoint of improving the assemblability, the present invention is applied to a combination meter in which the movements of various instruments are sub-assembled in one light guide plate and incorporated in a case. It can be carried out favorably without hindering the improvement of the adhesion.

[Brief description of the drawings]

FIG. 1 is a partial perspective view on the back side of a combination meter to which a structure for assembling a flexible wiring board as one embodiment of the present invention is applied.

2A is a longitudinal sectional side view of the combination meter shown in FIG. 1, and FIG. 2B is a rear side plan view thereof.

FIG. 3 is a front plan view of a general combination meter.

FIG. 4 is an explanatory view for assembling the combination meter of FIG. 3;

5A is a vertical sectional side view of the combination meter shown in FIG. 1, and FIG. 5B is a rear side plan view thereof.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Flexible wiring board 2 Connection part (of flexible wiring board) 3 Main body part (of flexible wiring board) 4 Continuous part (of flexible wiring board) 5 Part (of continuous wiring part) 6 Concave part 7 Fixed pin 100 Case 101 Bottom part (board) ) 102 Movement mounting part (motorized member mounting part) 103 Movement (motorized member) 104 Light guide plate 300 Tachometer (various instruments) 400 Water temperature meter (various instruments) A Combination meter

Claims (3)

[Claims] An electric member mounting part capable of swinging in a plane direction is formed on a part of a substrate, and a flexible wiring board mounted on a back surface of the substrate is mounted on an electric member mounted on a surface of the electric member mounting part. In the assembling structure of the electrically connected flexible wiring board, the connecting portion of the flexible wiring board is integrally formed at a tip end of a strip-shaped continuous portion extending from a main body of the flexible wiring board, and the electric member mounting portion is formed. A connecting part connected to the electric member from the back side of the flexible wiring board, and a part of the continuous part is fitted in a recess formed in the substrate in a loose state. 2. The flexible wiring board assembling structure according to claim 1, wherein a root portion of the continuous portion is fixed to a fixing pin protruding from a back surface of the substrate. Wiring board assembly structure. 3. The assembling structure of a flexible wiring board according to claim 1, wherein said substrate is a bottom of a case of a combination meter, and said electric member is connected to one light guide plate and is provided in said case. A structure for assembling a flexible wiring board, which is a movement of various instruments to be incorporated.