JPS59151486A - Flexible circuit board - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed Description of the Invention] The present invention)'! yl [variable fecal force hydraulic shock absorber, etc.') lj,
! Incorporated into. This invention relates to a 7-lexiple wiring board that is useful for electrical components such as motors and various types of sensors.

In recent years, in this type of variable damping force type hydraulic shock absorber, a damping force is provided within the piston rod that seals one end of the cylinder in a liquid-tight manner and extends inside the rod. Electrical components such as motors for car maintenance and position detection sensors that detect the rotational angle position of these motors, electric components placed on the car body,
Instead of an insulated cable with a relatively large inertial mass between the rL connector connected deep through the power supply side harness, a flexible cable with an extremely small inertial mass and full flexibility as a whole is used. A wiring board is installed to prevent accidents such as breakage and short circuits of the harness inside the piston rod caused by various vibrations that occur when the car is running.

Figure 1 shows the state in which such a flexible wiring board is assembled inside the piston rod.
Inside the wiring passage 3 formed in the axial direction of the piston wood 2 whose one end is sealed liquid-tight and extends inside, there is a motor for adjusting the damping force and a position detector for detecting the angular position of this motor. A flexible wiring board 5 connected to electrical components 4 such as sensors is inserted therethrough. As shown in FIGS. 1 to 3, this flexible wiring board 5 includes a large number of conductor parts 7 and
At one end of the connector 8, there are as many terminals 9 as the number of terminals arranged on the connector 8.
Terminal insertion hole 10 into which ... is inserted.

And conductor patterns 11 extending from each conductive portion 7 are provided at each terminal insertion hole 10 .

The other end is provided with an electrical equipment/component traverse section 12 to be connected to the distribution component 4. Note that the first thing. In the figure, 13 is a nut for fixing the end of the piston rod 2 to the vehicle body 13, and 11.4 is a power source electrically connected to a power source (not shown) via a power source harness 15. There is a connector, this power supply connector 4,
Connection of the end of the piston rod 2 with the VC# girder socket part 16! A connector hold cap 17 is attached to the edge to protect the connection part.
ing.

In order to attach the flexible wiring asp having such a configuration to a predetermined position in the wiring passage 3 of the gas rod 2, first, a nearly disk-shaped connector connection portion having lj number of terminal insertion holes 10 is installed. 19 is bent at a nearly right angle from the bent portion 20, and the terminals 9 of the connector 8 are inserted into the terminal insertion holes 1O.
Terminal 9... and conductor pattern 11... in the 0... portion
・is electrically connected to I# by solder 18... Next, the flexible wiring board 5 and the connector 8, which have been connected to each other in this manner, are simultaneously inserted into the wiring passage 3 and integrally attached at a predetermined position inside the wiring passage 3.

By the way, the terminals 9 of the connector 8 are generally arranged at a predetermined interval on the outer peripheral side of the distal end surface thereof.

In the case of such a configuration, the terminal insertion holes 10 provided in the flexible wiring board 5 are connected to the terminals 9 and 6, respectively.
Must be installed at the connector connection part 19 corresponding to...n
It doesn't happen. Therefore, each terminal 9 of the connector 8...
When inserted into each of the terminal insertion holes 10, the bent portions 20 will be located outside of each terminal 9. Therefore, when the connector 8 and the flexible wiring board 5Y are inserted into the wiring passageway 3 in the connected state f, the periphery of the bending portion 20 is elastically attached to the inner peripheral surface 3a of the wiring passageway 3, as shown in FIG. It will come into contact with the target. Therefore.

Due to the contact reaction force, there is no IJ in the entire connector connection part 19.
Tr force is applied, and as a result, the electrical ## between the terminal 9 of the connector 8 and the terminal insertion hole 10... due to the solder 18...
There were drawbacks such as the state of the ribbon being suspended.

In addition, since the entire flexible wiring board 5 is highly flexible, when inserting the flexible wiring WaS and the connector 8v into the wiring passage 3 of the piston rod 2, a part of the flexible wiring board 5, especially the connector connection part 19 The area around the bending part 20 that bends the terminal 9 of the connector 8 is the outer peripheral surface 8 of the connector 8.
a and the inner peripheral surface 3I of the wiring passage 3! An extreme case where you are caught between L and L.

There was a drawback that that part was a local [Ft line].

Moreover, as mentioned above, in the connector connection part 19.

Each terminal insertion hole 10... is arranged on the circumference as shown in FIG. 3 in accordance with the arrangement shape of each terminal 18... of the connector 8, and the terminal insertion hole 10... When trying to extend each conductor pattern 11..., each terminal insertion hole 1
0..., a part 11a... of the conductor pattern 11... that extends long in the opposite direction of the electrical component connection part 12 is locally affected by the shadow of the adjacent conductor pattern 11... Sometimes it is necessary to form it thinly. In such a case, there is a drawback that the thin portion may cause breakage.

The present invention has been made in view of such conventional drawbacks, and includes a first bent portion extending in the longitudinal direction at one end of a flexible support member, and a first bent portion extending in the width direction on both sides of the first bent portion. A pair of protruding connecting pieces and a tongue piece ve protruding from each of these connecting pieces to the longitudinal end via the second bent part are formed, while a plurality of terminal insertion holes and conductor patterns are formed in these tongue pieces. 1rLI
J+ is scattered.

By making it possible to insert all the terminals of the connector into the terminal insertion hole when the above-mentioned famous analysis piece M is folded back, unreasonable force on the hard part of the QT-equipped support member with the connector terminal is avoided. Grant of? This can be prevented during insertion of the flexible support member and the connector into the wiring passage of the piston rod. To propose a flexible wiring board that can avoid breakage of conductor parts due to partial pinching of a flexible support member, and can also increase the formation area of conductor patterns formed around each terminal insertion hole. The purpose is to

Hereinafter, one embodiment of the present invention will be described based on the drawings.
Components that are the same as those of the conventional example are given the same reference numerals, and redundant explanation thereof will be omitted.

FIG. 4 is a partially omitted plan view showing an embodiment of the flexible wiring board according to the present invention, FIG. 5 is an exploded perspective view showing the state before the connector and the flexible wiring board are connected, and FIG. Flexible wiring board χ inside the wiring passage of the piston rod
The sectional view showing the attached state, Figure @7, is a plan view showing another embodiment of the flexible wiring board of the present invention.

As shown in FIG. 4 and the TAS diagram, one end 6a of the flexible support member 6 made of an insulating film 5 or the like has a first bent part 21 along the longitudinal direction of the flexible support member 6. A pair of joining pieces 22a and 22h protruding in the -f'1lli direction are continuously formed and rounded. In addition, at the ends of the joint pieces 22a and 22fi in the Aiko direction, projecting from the joint pieces 22a and 22h through second bent portions 23a and 23b'ft extending in the width direction, respectively. The tongue pieces 24a and 24h are also formed continuously.

In these pair of tongue pieces 24a, 241'l, aa terminal insertion holes 10... and conductor patterns 11... are arranged in a distributed manner, respectively. Three terminal insertion holes 10 . . . and conductor patterns 11 are distributed on one tongue piece 24a and two on the other tongue piece 24h. Each of these tongue pieces 24a, 24h is a part that becomes a connector connection part 24 to the connector 8. 1. Each of the second bent portions 23a.

1 23h, centering holes 27a and 27h are provided at equal distances from the first bent portion 21, respectively.

Next, a procedure for connecting the flexible wiring board according to the present invention having such a configuration to a connector terminal will be explained.

First, the pair of j# folds 22a, 22bg and the centering holes 27a, 27b are bent from the first bending part 21 so that their backs are aligned.

Next, from the second lfr curved portions 23a and 23b, each tongue piece 2 is
4ae2ahY are bent outwards so that the tongues 24a, 24fi intersect approximately one length with respect to the longitudinal direction of the flexible support member 6, as shown in FIG. Then.

2 One 46a of the flexible support member 6 has each tongue piece 24a.

24b forms the connection portion 24 which is generally disk-shaped as a whole. A notch 28 for positioning the connector 8 in the circumferential direction is formed in the connector connecting portion 24, and a positioning pin (not shown) provided on the connector 8 is fitted into the notch 28. The terminals 9 of the connector 8 are inserted into each of the terminal insertion holes 10.
By inserting the connector χ and applying solder 18 between them, electrical connection to the connector 8 can be made.

According to the flexible wiring board 25 of the present invention having the configuration as shown in Onoue, unlike the conventional example shown in FIGS.
As shown in FIG. 5, from the approximately central part of the connector connecting part 24, that is, the second bent parts 23a, 23b bent above each tongue piece 24a, 24h, the 3 parts are approximately perpendicular to the surface of the connector connecting part 24. Hole 10
When inserting the integrated connector 8 and flexible wiring board 25 into the wiring passage 3 of the piston rod 2 by applying the solder 18... Part 6 Any part of the wiring must be connected v@3
There is no chance of it coming into contact with the inner circumferential surface 3a of the roller. Therefore, the contact reaction force does not apply unreasonable force to the connector connecting portion 24, and the conductor pattern 11 around the terminals 9 of the connector 8 and the terminal insertion hole 10 due to the solder 18... . . . While it is possible to avoid the possibility of giving form I# to the electrical connection state between the connector 8 and the terminal 9 . . . Since there is no situation where a part of the breakthrough support part [6] is pinched between the circumferential surface section 3 and the circumferential surface section 4, there is no possibility of breakage due to the pinching. Accidents can also be avoided. .

Moreover, according to the flexible arrangement #&25 of the present invention, the pair of suction pieces 22a that protrude uniformly from the openable support part it6
, 22h protrude from the tongue pieces 24a, 2ah, respectively, into the core insertion holes 10... and l! I1 body pattern 11... can be arranged in a manner that P n 5+ is scattered. Therefore, the pattern width i of the conductor patterns 11... and the width Iv between each adjacent conductor pattern 11...
The distances l and χ can be made sufficiently large.

Further, as in the embodiment shown in FIG.
If the back side of at least one of a and 22b (both in this example t) is pre-applied with 71326-5, it will not be difficult to separate the W and fins 22a and 22h even after they are placed back to back. 1. As is clear from the above explanation, 1. According to the present invention, the connector terminal is inserted into the terminal insertion hole of the flexible wiring board.・Nezumi〃゛Yu to 7
When connected to the Lexipoo wiring board, the flexible support part #Y can be extended in the axial direction of the connector from approximately the center position of the connector terminal. Therefore, when the connector and the flexible wiring board are inserted into the wiring passage of the piston rod, a portion of the flexible support member is inserted into the wiring passage.
It is possible to avoid situations such as contacting a curved surface or being caught between the inner circumferential surface of the connector and the outer circumferential surface of the connector, thereby preventing breakage of the conductor portion, defective soldering, etc.

6 Also, according to the present invention, the area of each tongue piece that becomes the connection part to the connector terminal? Since a sufficient width can be secured, the pattern width of each conductor pattern and the gap between adjacent conductor patterns can be made sufficiently large. Once upon a time,
It is possible to completely prevent the formation of consequential conduction state due to breakage of each conductor pattern, etc.

[Brief explanation of drawings]

Is Figure 1 the conventional 7-lexiple arrangement? FIG. 3 is a partially cutaway sectional view showing how the m-plate is installed in the piston rod. Figure 2 is a plan view showing a conventional flexible wiring board; Figure 3 is an enlarged plan view of the main parts around the terminal insertion hole; Figure 4 is an embodiment 11A of the flexible wiring board according to the present invention.
Figure 5 shows the connector and flexible arrangement @! An exploded perspective view showing the state t 7 before connection with the root, FIG. 6 is a partially cutaway sectional view showing a state in which the flexible wiring board is attached to the wiring path of the piston rod, and FIG. 7 is according to the present invention. Flexible wiring board? There is a partially omitted plan view f showing another embodiment.゛. 6...Flexible jar holder! Material, 6a... One end, 7... Conductor portion. 8... Connector →... Terminal, 1o... Terminal insertion hole. Iris 00. Guidebook, 2/, 1.2. ．． - manufactured parts connections;
21...1st-1j? Songs ti, 22a, 22fi...
・Joint piece, 23a, 23zo: 2nd '2nd bent part, 24a,
24b"" tongue piece. NiB

Claims (1)

[Claims] il+ A flexible terminal arranged in a connector at one end of several conductor parts arranged in parallel along the longitudinal direction of a thin film-like long flexible support member. A terminal insertion hole into which each terminal is inserted, and a conductor pattern extending from each conductor portion to the position of each terminal insertion hole to be electrically connected to each terminal are provided, and an electrical device is provided at the other end. In a flexible wiring board that is provided with an electrical component connection portion to be connected to a component, one end of the front flexible support member is provided with a vKl bent portion along the longitudinal direction of the flexible support member in between. A pair of joint pieces that protrude uniformly are formed in succession, and each of the joint pieces is connected through a second bent part along one width direction at the longitudinal end of each joint piece. 1rL5+ tongues are successively formed, each of which has the plurality of terminal insertion holes and the conductor pattern arranged in a configuration of 1rL5+, respectively. When the bent portions are folded back so that the joint pieces are placed back to back, and the second bent portion is folded back outward, the plurality of terminal insertion holes formed in each tongue piece are inserted into the plurality of terminal insertion holes. A flexible wiring board characterized in that it is constructed such that all of the terminals can be inserted therein. (2) Of the respective joint pieces, at least -1 is formed by applying an adhesive to the folded back surface. 77 xipul wiring/board according to claim 1.