JP6318300B1 - Conductive electrical component structure and manufacturing method thereof - Google Patents

Abstract

The present invention provides a conductive electrical component structure and a manufacturing method thereof capable of realizing light weight and low cost by saving space while ensuring high strength, wear resistance, impact resistance, high bending performance and high vibration resistance. provide. An insulating paint layer is applied to an outer surface of a compression coil spring. The second electrode strip 5 is disposed in close contact with the outer surface of the insulating paint layer 4. The protective layer 6 is disposed in close contact so as to cover the second electrode strip 5 with the outer surface of the insulating paint layer 4. The second electrode strip 5 is arranged in a meandering shape along the coil wire axis of the compression coil spring 2 on the outer surface of the insulating paint layer 4. At the time of expansion / contraction displacement accompanying the operation of the compression coil spring 2, the displacement generated in the meandering band 37 (second electrode band 5) is absorbed by the abdominal part 37a (5a) and the node part 37b (5b). [Selection] Figure 2

Description

  The present invention relates to an improvement in the structure of a conductive electrical component such as a coil spring applied to an electrical system, and more particularly to a conductive electrical component structure that is convenient to be attached to a place where vibration and bending force are repeatedly applied, and a manufacturing method thereof.

  For example, in the automobile manufacturing industry, various electric wires are used as wire harnesses for connection in order to supply electric power to electrical components. Examples of this type of application include connection to sensors for ABS (anti-lock braking system), EPB (electric parking brake), AVS (adaptive variable suspension system), WSS (wheel skid system), etc. There is. Future applications include connection to sensors for EMB (electric motor brakes). As another application example, it is used for connection between an electronic control unit (ECU) incorporating a computer and various in-vehicle sensors.

In the ABS (anti-lock braking system), the vehicle suspension (shock absorber) described in Patent Documents 1-3 is provided at a location where the suspension is provided.
An example of this is the vehicle suspension structure shown in FIG. In this suspension structure, the compression coil spring 51 is provided around the damper 50.

A disk 53 of the rotation sensor 52 is disposed at the base end of the compression coil spring 51, and a caliper-like caliper 54 sandwiches the outer periphery of the disk 53 in a loosely fitted state.
The caliper 54 is connected to a microcomputer 55 having an ABS wire 55a. From the microcomputer 55, power lines 55a and 55b are wired and connected to an ECU (not shown) while being supported by holding members such as the HS tube 56, the relay connector 57, the resin protector tube 58, and the waterproof grommet 59.

  Further, in the cord winding device described in Patent Document 4, a built-in spring spring is provided in an electrically insulated state with respect to the surroundings, and the spring spring is used as a signal transmission means to eliminate the need for attaching a slip ring. As a result, the slip ring is not replaced, and contact continuity failure due to secular change is prevented.

JP-A-9-2032 JP-A-9-76713 JP 2007-320489 A JP 2006-56706 A

However, since the recent automobile industry has focused on reducing the weight of vehicles, there is a demand for reducing the weight of the wires. It is insufficient from the viewpoint of conversion.
Also, since the wiring of the wires is exposed to the outside under the floor of the vehicle, it is required to have high strength and impact resistance so that it will not be damaged even if a stepping stone on the road collides when the vehicle is running. Has been.
In particular, the wiring wire around the compression coil spring in the suspension structure of the vehicle is easily shaken by the compression coil spring that is subjected to expansion and contraction displacement during operation, so that careful wiring of the wiring is required.

  The present invention has been made in view of the above circumstances, and its purpose is to achieve high strength, wear resistance, impact resistance, high bending performance, and high vibration resistance, while at the same time reducing the weight and reducing the cost. It is another object of the present invention to provide a conductive electrical component structure that eliminates the need for cautious wiring even under a situation in which a coil spring is subject to expansion and contraction during operation, and a method for manufacturing the same.

(About Claim 1 and Claim 8)
In a conductive electrical component structure having a coil spring that repeatedly receives expansion and contraction due to a dynamic load during operation as a first electrode, an insulating paint layer is applied to the outer surface of the coil spring. The second electrode strip is disposed in close contact with the outer surface of the insulating paint layer. The protective layer is disposed in close contact so as to cover the second electrode strip on the outer surface of the insulating coating layer.
The second electrode band is arranged in a meandering shape along the coil wire axis of the coil spring on the outer surface of the insulating paint layer, and is bent as a meandering band in which a large number of abdomen and a large number of nodes are alternately and continuously formed. Has been. At the time of expansion / contraction displacement accompanying the operation of the coil spring, the displacement generated in the second electrode band can be absorbed by the abdomen and the node.

In claim 1 and claim 8, the coil spring is a first electrode, and the second electrode band is bent as a meandering band arranged in a meandering shape along the coil wire axis of the coil spring on the outer surface of the insulating paint layer. Yes.
For this reason, the coil spring itself becomes a conductor, and signals can be transmitted between various sensors and the electric control unit (ECU) without using a wire harness in which a plurality of electric wires are bundled. Weight reduction and cost reduction are possible. In addition, since the displacement generated in the second electrode band is absorbed by the abdomen and the node of the meandering band at the time of expansion / contraction displacement due to the operation of the coil spring, careful wiring of the wiring becomes unnecessary.

(About claim 2)
The coil spring is incorporated in a suspension mechanism that supports the vehicle body of the vehicle, and the first electrode and the second electrode belt cooperate to transmit a signal from a sensor provided on the vehicle body to the electric control computer. Has been.

According to the second aspect, even if the coil spring is incorporated in a suspension mechanism that supports the vehicle body of the vehicle, the coil spring itself becomes a conductor, and it is possible to achieve weight reduction and cost reduction by space saving.
It is possible to secure these various characteristics by making both the insulating paint layer and the protective layer a resin that has high strength, wear resistance, impact resistance, high bending performance and high vibration resistance. It becomes.

(Claim 3)
Since the second electrode strip is made of a conductive synthetic resin, it becomes easy to become familiar with both the insulating paint layer and the protective layer, and the bonding property to both the insulating paint layer and the protective layer is improved.

(About claim 4)
A resin cap is fitted and fixed to the linear portion which is one end portion of the coil spring. Along with the fitting and fixing of the resin cap, the second conductive wire that is electrically connected to the second electrode band is led out from the resin cap. A first conductive line electrically connected to the first electrode is led out at the center of the resin cap.
This wiring configuration provides the convenience of being able to electrically connect the power supply and the electrical component using both the second electrode strip and the first electrode as electrodes.

(Claim 5)
A composite layer formed by closely arranging the third electrode strip on the outer insulating layer is provided. The composite layer is disposed between the second electrode band and the protective layer, the outer insulating layer is in close contact with the second electrode band, and the third electrode band is in close contact with the inner side of the protective layer.

  According to a fifth aspect of the present invention, a composite layer formed by closely arranging the third electrode strip on the outer insulating layer is disposed in close contact between the second electrode strip and the protective layer. Thereby, the conductive electrical component structure achieves high functionality, and the first electrode, the second electrode strip, and the third electrode strip can be used as a coaxial cable constituting a plurality of electrodes.

(About claim 6)
The second electrode band has one shape selected from a meandering shape group consisting of a wave shape, a zigzag shape, an uneven shape, a cosine shape, and a sine curve. For this reason, the second electrode band becomes versatile, and the second electrode band can be formed in an optimal shape according to the use situation, application object, and the like.

(About claim 7)
Even if a thin and long flexible printed circuit band is provided as a functional member in place of the second electrode band, the same effect as in the first aspect can be obtained.

(A) is a perspective view showing a structure in which a conductive electrical component structure used for an electric system is attached to a vehicle suspension mechanism as a compression coil spring, and (b) is a second electrode on the outer surface of an insulating paint layer in the compression coil spring. (Example 1) which is the partial expanded view which shows having provided the belt | band | zone. (A) is an expanded horizontal sectional view which follows the NN line | wire of FIG. 1, (b) is a longitudinal cross-sectional view which follows the N1-N1 line | wire of (a) (Example 1). (A) is a disassembled perspective view which shows the connection structure of the linear part of a compression coil spring, and a conductive wire, (b) is an exploded longitudinal cross-sectional view which shows the connection structure of the straight part of a compression coil spring, and a conductive wire (implementation) Example 1). (Example 1) which is a schematic perspective view which shows the mechanism which provides an insulating coating layer on the outer surface of a compression coil spring, and provides a 2nd electrode belt | band | zone and a protective layer in an insulating coating layer. (Example 1) which is a schematic sectional drawing which shows the mechanism which provides an insulating coating layer on the outer surface of a compression coil spring. (Example 1) which is a schematic longitudinal cross-sectional view which shows the mechanism which provides a 2nd electrode belt | band | zone and a protective layer in the insulating paint layer of a compression coil spring. (A) is an expansion perspective view which shows a 2nd extrusion molding machine, (b) is an expanded view of the 2nd electrode belt | band | zone in the outer surface of a compression coil spring (Example 1). It is a schematic perspective view which shows a press deformation | transformation apparatus and a meandering molding machine (Example 1). (A) is a perspective view showing a heat-shrinkable insulating tube having a second electrode band embedded therein, (b) is a development view showing a heat-shrinkable insulating tube having a second electrode band embedded therein, and (c) is a heat-shrinkable insulating tube. (Example 2) which is an expanded transverse sectional view which shows the coil strand of the compression coil spring which provided the tube. (Example 3) which is an expanded view which shows the example formed in zigzag shape as one of the typical shapes of a 2nd electrode strip. (A) is a front view which shows the example applied to the torsion beam and stabilizer of a vehicle, (b) is a cross-sectional view which follows the K1-K1 line of (a), (c) is along the K2-K2 line of (a). (Example 4) which is a cross-sectional view. (A) is an expanded horizontal sectional view which shows the coil strand of a compression coil spring, (b) is a longitudinal cross-sectional view which follows the J2-J2 line of (a) (Example 5). (A) is the perspective view which shows a flexible printed circuit belt | band | zone, (b) is the expanded view which showed the flexible printed circuit belt | band | zone as the meandering belt | band | zone (Example 6). (Example 7) which is a schematic perspective view which shows the mechanism which provides an outer coating layer on the outer surface of a protective layer while providing an insulating coating layer on the outer surface of a compression coil spring. It is a schematic perspective view which shows the suspension mechanism of a vehicle with a wire harness (prior art).

  The present invention relates to a conductive electrical component structure such as a coil spring, wherein an insulating paint layer applied to the outer surface of a compression coil spring serving as a first electrode is provided, and the second electrode strip is formed on the outer surface of the insulating paint layer. The coil spring is arranged in a meandering shape along the coil axis of the coil spring, and is bent as a meandering band composed of a large number of abdomen and a large number of nodes.

A first embodiment of the present invention will be described with reference to FIGS.
In the conductive electrical component structure according to the present invention, for example, from a sensor (not shown) for driving electrical components such as ABS (anti-lock braking system) and EPB (electric parking brake) equipped in a vehicle. It is useful for signal transmission to an electric control unit (ECU) as a control computer.
As the power source, for example, a battery assembly (cell single-layer stack) in which a plurality of thin rectangular batteries are stacked in parallel in the left-right direction as a single secondary battery is used.

The conductive electrical component structure in FIG. 1A is applied to a suspension mechanism 1 that supports a vehicle body (not shown) of a vehicle (automobile), for example, as a compression coil spring 2 made of conductive metal.
The compression coil spring 2 is included in the category of a coil spring, and is configured as a base material of a first electrode (for example, a positive electrode). When the vehicle is in operation, the compression coil spring 2 is configured to repeatedly receive expansion and contraction during operation, and is disposed so as to surround a shock absorber 3 made of a damper.

  As shown in FIGS. 2A and 2B, the outer surface of the compression coil spring 2 is provided with an insulating coating layer 4 made of a thermoplastic resin applied in close contact by an application means described later as an electrical insulator. Yes.

  A second electrode strip 5 (for example, a negative electrode) is provided on the outer surface of the insulating coating layer 4 so as to be in close contact with the fixing means. The insulating coating layer 4 and the second electrode strip 5 are continuously arranged and covered over the entire length along the coil wire axis including the straight portions 2a and 2b of the compression coil spring 2 (FIG. 1 (b) and (See FIG. 3).

As shown in FIG. 3A, the second electrode band 5 is arranged in a meandering shape along the coil wire axis of the compression coil spring 2 on the outer surface of the insulating paint layer 4. The second electrode band 5 is bent as a long meander band 37 in which a large number of abdominal portions 5a and a large number of node portions 5b are alternately formed. At the time of expansion / contraction displacement due to the operation of the compression coil spring 2, the displacement generated in the second electrode band 5 can be absorbed by the second electrode band 5 itself as a meandering band 37.
The meandering band 37 shows a specific mode of the second electrode band 5 and is the same member as the second electrode 5 but is used individually as described later for the sake of convenience.

  The fixing means for the second electrode strip 5 includes plating, vapor deposition, and the like, and the applying means for the insulating coating layer 4 includes dipping and baking methods, but the fixing means in the present invention. Both the coating means and the coating means are based on the manufacturing method shown as an example in FIGS.

  As the thermoplastic resin, vinyl polymers such as polyethylene, polystyrene, polypropylene, and polyvinyl chloride, and condensation polymers such as polyester and polyamide can be used. On the outer surface of the insulating paint layer 4, an electrically insulating protective layer 6 having characteristics such as polyurethane and chlorinated polyolefin is provided so as to cover the outer surface of the second electrode strip 5 in a close contact state.

A straight line portion 2a at the upper end of the compression coil spring 2 in the drawing penetrates the diaphragm 7 and is exposed upward. The diaphragm 7 is fixed to a movable plate 7 a that can be interlocked with the diaphragm 7.
A straight line portion 2b at the upper end of the compression coil spring 2 in the drawing penetrates the fixed platen 9 and is exposed downward. The fixed platen 9 is fixed to the support plate 9a.

  As shown in FIGS. 3A and 3B, the upper end portion of the protective layer 6 is partially peeled off at the upper end straight portion 2 a and the lower end straight portion 2 b to expose the upper end portion of the second electrode strip 5. ing. A resin cap 11 is fitted and fixed to the exposed second electrode band 5 via the second conductive layer 10.

A second conductive wire 12 having a lower end portion electrically connected to the second conductive layer 10 is led out to the resin cap 11. In this case, the second conductive wire 12 has, for example, a surplus portion formed in a coil shape or the like, and this surplus portion can be expanded and contracted along the elastic displacement direction F of the compression coil spring 2. .
A coil-shaped first conductive wire 14 that is electrically connected to the upper end surface 2c of the linear portion 2a through the first conductive layer 13 and can be expanded and contracted is led out at the center of the resin cap 11.

The first conductive wire 14 and the second conductive wire 12 penetrate the support plate 15 in the middle, and are connected to an electric control unit (not shown) as an electric control computer of the engine, for example.
The connection structure of the straight portion 2b in the compression coil spring 2 is the same as that of the straight portion 2a. From the resin cap 11, it corresponds to the fourth conductive wire 16 and the first conductive wire 14 corresponding to the second conductive wire 12. A third conductive line 17 is led out.

The fourth conductive line 16 and the third conductive line 17 are connected to a microcomputer 18 connected to an ABS sensor (not shown) via an ABS wire 18a. In the microcomputer 18, a rotating disk 20 constituting a rotation sensor 19 is arranged adjacent to the microcomputer 18.
The rotary disk 20 is provided with a caliper 21 having a U-shaped cross section so as to loosely fit the outer peripheral edge thereof. As a result, the first electrode and the second electrode strip 5 as the compression coil spring 2 cooperate to transmit a signal from the rotation sensor 19 and the ABS sensor provided on the vehicle body to an electric control computer (ECU). Has been.
With this wiring configuration, the convenience of being able to electrically connect the power source and the electrical component using both the second electrode strip 5 and the first electrode as electrodes is obtained.

4 to 8 show a method for manufacturing a conductive electrical component structure according to the present invention, which constitutes a coating means for the insulating paint layer 4 and a fixing means for the second electrode strip 5.
In carrying out the manufacturing method of the electrically conductive electrical component structure, as shown in FIG. 4, a first extrusion molding machine 25 and a second extrusion molding machine 26 installed at a predetermined interval K apart from the compression coil spring 2 are used.

As shown in FIG. 5, the first extrusion molding machine 25 has a molding nozzle 25a, a cross head 25b, and a point 25c through which the coil wire of the compression coil spring 2 is passed.
An annular space 25d formed between the molding nozzle 25a and the cross head 25b is used as a flow passage 25e. The molten resin S1 from the screw cylinder 25f flows into the flow passage 25e and covers the outer surface of the coil wire of the compression coil spring 2.
That is, when the compression coil spring 2 is rotationally driven around the central axis Y in the direction of the arrow D, the molten resin S1 is applied to the outer surface of the compression coil spring 2 with a predetermined thickness via the coil wire and insulated. The paint layer 4 is formed (application process).

As shown in FIG. 6, the second extrusion molding machine 26 has a molding nozzle 26a through which the coil wire of the compression coil spring 2 passes, a cross head 26b, and a point 26c.
An annular space 26d formed between the molding nozzle 26a and the cross head 26b is used as a flow passage 26e. The molten resin S2 from the screw cylinder 26f flows into the flow passage 26e to form the protective layer 6 on the outer periphery of the insulating paint layer 4, and both the second electrode strip 5 and the insulating paint layer 4 are connected as will be described later. It is designed to cover in a close contact state.
That is, when the compression coil spring 2 is rotationally driven around the central axis Y in the direction of arrow D, as will be described later, the molten resin S2 flows into the outer surface of the insulating paint layer 4, and the outer surface and The protective layer 6 is formed with a predetermined thickness while covering the two-electrode band 5 in a close contact state (second arrangement step).

  On the inner peripheral surface of the cross head 26b in the second extrusion molding machine 26, as shown in FIG. 7A, for example, four guide pipe portions 28 are formed extending along the axial direction. The guide tube portions 28 are arranged at equiangular intervals (for example, 45 ° angle intervals) in the circumferential direction of the guide tube portions 28, and extend in the axial direction until reaching the position of the point 26c.

In the deformation step, the four conductive wires 30 fed out from the winding drum 29 are pressed and deformed into a flat state having a rectangular cross section. For this reason, as shown in FIG. 8, one of the upper two 30M conductive wires 30 is disposed between the center wall portion 34 and the first block 32 in the press deformation device 31, and the other one is It arrange | positions between the center wall part 34 and the 2nd block 33. FIG.
The first block 32 and the second block 33 can be moved away from each other with respect to the central wall portion 34, and are fed out when the first block 32 and the second block 33 move close to the central wall portion 34. The conductive wire 30 is crushed by pressing deformation to form a flat state with a rectangular cross section as the flat electric wire 30a.
Of the four conductive wires 30, the other lower two wires 30N are also passed through the device 31 similar to the above, and are continuously crushed by the pressure deformation to be flattened as a flat wire 30a having a rectangular cross section.

  The upper two wires 30M of the conductive wires 30 that are pressed and deformed in a flat state are arranged between the upper die block 35 and the lower die block 36 of the meandering molding machine 35A. A first undulation portion 35a that undulates in a wavy shape is formed on the lower surface of the upper mold block 35, and a second undulation portion 36a that undulates in a corrugated manner corresponding to the first undulation portion 35a is formed on the upper surface of the lower mold block 36. Is formed.

Therefore, when the upper mold block 35 and the lower mold block 36 are pressed and moved, the flat electric wire 30a is sandwiched between the blocks 35 and 36 and is pressed to form a large number of abdominal portions 37a and a large number of node portions 37b. Are bent as a meandering band 37 formed alternately and continuously (curving step).
In this case, the meandering band 37 is the same as the second electrode 5, and the abdomen 37 a and the numerous node parts 37 b are the same as the abdomen 5 a and the node parts 5 b of the second electrode 5, respectively. Thereafter, the meandering band 37 and the second electrode 5 are used individually in the sense of the same member without being unified.

Of the four conductive wires 30, the other lower two wires 30N are also pressed between the blocks by the block bodies 35 and 36 similar to the above, and a large number of abdominal portions 37a and a large number of nodes 37b are formed. It is bent as a meandering band 37 formed alternately and continuously.
The conductive wire 30 pressed and deformed in the flat state can be continuously arranged in a meandering shape along the coil wire axis of the compression coil spring 2 on the outer surface of the insulating coating layer 4 as a meandering band 37.

  The four conductive wires 30 are respectively inserted into the corresponding guide tube portions 28 as meandering bands 37, and are drawn out from the guide tube portions 28 along with the rotational drive around the central axis Y of the compression coil spring 2 to be insulated. On the outer surface of the coating layer 4, it is continuously arranged in a meandering shape along the coil wire axis of the compression coil spring 2 (first arrangement step).

That is, in the first arrangement step, the meandering band 37 in which the conductive wire 30 is in close contact with the outer surface of the insulating paint layer 4 is continuously arranged as the second electrode band 5 (see FIGS. 7A and 7B).
At this time, the molten resin S2 flows into the outer surface of the insulating paint layer 4 to form the protective layer 6 covered with a predetermined thickness (second arrangement step). That is, the second arranging step is performed substantially simultaneously with the first arranging step, and the protective layer 6 is in close contact with both the insulating coating layer 4 and the second electrode strip 5 on the outer surface of the insulating coating layer 4. Place continuously

With the configuration described above, it is possible to effectively absorb the displacement generated in the meandering band 37 (second electrode band 5) by the abdominal part 37a and the node part 37b at the time of expansion / contraction displacement accompanying the operation of the compression coil spring 2.
That is, when the compression coil spring 2 that is operated by the suspension mechanism 1 operating during vehicle operation is expanded and contracted, the coil wire has bending moment M and torsion moment T (torque) as shown in FIG. Arise. The bending displacement based on the bending moment M is absorbed by the abdomen 37a of the meandering band 37 (second electrode band 5), and the torsional displacement based on the torsional moment T is absorbed by the node part 37b.

[Effect of Example 1]
In Example 1, the insulating paint layer 4 applied to the outer surface of the compression coil spring 2 serving as the first electrode is provided, and the second electrode strip 5 is provided in close contact with the outer surface of the insulating paint layer 4. A protective layer 6 covers the outer surface of the two-electrode strip 5 in a close contact state.
For this reason, the compression coil spring 2 itself becomes a conductor, and signals can be transmitted between various sensors and an electric control unit (ECU) without using a wire harness in which a plurality of electric wires are bundled. It is possible to reduce weight and cost by making space.

Moreover, the displacement generated in the second electrode band 5 is absorbed by the abdominal part 37a and the node part 37b of the meandering band 37 (second electrode band 5) at the time of expansion / contraction displacement accompanying the operation of the compression coil spring 2.
Thereby, even if the compression coil spring 2 is repeatedly subjected to expansion / contraction displacement, the second electrode band 5 is not cracked due to fatigue or the like, and the initial good second electrode band 5 can be maintained over a long period of time. Thus, it is possible to contribute to extending the service life.

The second electrode layer 5 is not limited to a conductive metal such as copper, a copper alloy, a nickel alloy, or a noble metal, but may be formed of a conductive synthetic resin (not shown).
When an electrically conductive resin is used for the second electrode layer 5, the electrically conductive synthetic resin can be easily adapted to both the insulating paint layer 4 and the protective layer 6, and the bonding property to the insulating paint layer 4 and the protective layer 6 is good. It becomes. As the conductive synthetic resin, polyacetylene, polythiophene, or the like may be used.

  FIG. 9 shows a second embodiment of the present invention. The difference between Example 2 and Example 1 is that the protective layer 6 is applied as an electrically insulating heat-shrinkable insulating tube 22 in which the second electrode layer 5 is embedded (FIG. 9A). To (c)).

The heat-shrinkable insulating tube 22 is inserted into the insulating paint layer 4 of the compression coil spring 2 while being elastically deformed along the coil wire. In this state, the heat-shrinkable insulating tube 22 is heat-treated to contract and deform, thereby covering the outer surface of the insulating coating layer 4 in a close contact state.
This heat-shrinkable insulating tube 22 may be provided with an adhesive, is rich in elasticity, has good heat resistance, flame resistance, cold resistance, water resistance, weather resistance, and electrical insulation, under severe use conditions It may be a silicone rubber tube having high reliability and excellent adhesion coverage.

After heat treatment of the heat-shrinkable insulating tube 22 with respect to the insulating paint layer 4, the second electrode layer 5 is continuously arranged in a meandering manner along the coil wire direction of the compression coil spring 2 on the outer surface of the insulating paint layer 4. The
Since the protective layer 6 is the heat-shrinkable insulating tube 22 in which the second electrode layer 5 is embedded, the heat-shrinkable insulating tube 22 may be covered with the insulating paint layer 4 via the compression coil spring 2 and heat-treated. The work of arranging the two electrode layers 5 and the insulating paint layer 4 in close contact is short, and the workability is improved.

FIG. 10 shows a third embodiment of the present invention. In the third embodiment, the second electrode band 5 has one shape selected from a meandering shape group consisting of a wave shape, a zigzag shape, an uneven shape, a cosine curve, and a sine curve.
In the third embodiment, a zigzag meandering shape is shown as one type of the second electrode strip 5. Thereby, the 2nd electrode belt | band | zone 5 becomes versatile, The 2nd electrode belt | band | zone 5 can be made into an optimal shape according to a use condition, application object, etc.

  FIG. 11 shows a fourth embodiment of the present invention. In the fourth embodiment, as shown in FIGS. 11A to 11C, an example applied to a torsion beam 30 and a stabilizer 31 provided in a vehicle in place of the compression coil spring 2 as a conductive electrical component structure. Show. Even if comprised in this way, the effect similar to Example 1 is acquired.

FIG. 12 shows a fifth embodiment of the present invention. The fifth embodiment is different from the first embodiment in that a composite layer 42 formed by closely arranging the third electrode strip 41 on the outer insulating layer 40 is provided.
In this case, as shown in FIGS. 12A and 12B, the composite layer 42 is disposed between the second electrode band 5 and the protective layer 6, and the outer insulating layer 40 is disposed outside the second electrode band 5. The third electrode band 41 is in close contact with the inner side of the protective layer 6.
In Example 5, since the conductive electrical component structure has a high function, the first electrode, the second electrode band 5 and the third electrode band 41 can be used as a coaxial cable constituting a plurality of electrodes.

  A composite layer (for example, two layers, three layers, four layers, five layers, etc.) formed by concentrically arranging a plurality of composite layers 42 between the second electrode strip 5 and the protective layer 6. ) May be provided.

FIG. 13 shows a sixth embodiment of the present invention.
Example 6 differs from Example 1 in that instead of the second electrode band 5, a thin and long flexible printed circuit band 43 is provided as shown in FIG. The flexible printed circuit band 43 is provided as a meandering band (functional member) in which abdominal portions 43a and node portions 43b are alternately and continuously formed.
As shown in FIG. 13A, the flexible printed circuit band 43 before bending is formed by bonding an insulating thin and soft base film (for example, made of polyimide) and a conductive metal such as copper foil. It is a board | substrate which provided the electric circuit in the base material, and is formed in the elongate strip | belt shape.
By bending the flexible printed circuit band 43 of FIG. 13A to form the meandering band of FIG. 13B, the same effects as in the first embodiment can be obtained in the sixth embodiment.

FIG. 14 shows a seventh embodiment of the present invention. Example 7 is different from Example 1 in that a third extrusion molding machine 26A having a molding nozzle 26E is provided as a post-process device directly connected to the second extrusion molding machine 26.
The third extrusion molding machine 26A has the same function as the first extrusion molding machine 25, and is formed on the outer side of the second electrode strip 5 with an outer layer 6A formed by letting molten resin (not shown) flow out from the screw cylinder 26F. The protective layer 5 is coated.

[Modification]
(A) The conductive electrical component structure according to the present invention is not limited to the compression coil spring 2, the torsion beam 30, and the stabilizer 31, but of course the connection between an electronic control unit (ECU) incorporating a computer and various in-vehicle sensors, The present invention may be applied to connection to electronic circuits such as a drive monitor, an in-vehicle navigation device, a data processing unit, and a security device, or to electrical components that can be connected by components around the vehicle body and a wire harness.
(B) Instead of the compression coil spring 2, it may be applied to a member that repeatedly deforms during operation, such as a tension coil spring or a torsion coil spring.

(C) The protective layer 6 may be EPDM (ethylene / propylene / diene / methylene rubber) instead of polyurethane resin or chlorinated polyolefin, or polyamide (PA), polyester, polyimide, polyamideimide, polyacetal, Engineering plastic materials such as polycarbonate (PC), polyphenylene ether (PPE), polybutylene terephthalate (PBT), polyethylene terephthalate (PET), polyethylene (PE), polytetrafluoroethylene (PTFE) or syndiotactic polystyrene (SPS) It may be used. Also, as the insulating paint layer 4, a desired material may be selected from the plastic materials.

  In the conductive electrical component structure and the manufacturing method thereof according to the present invention, the coil spring itself becomes a conductor, and without using a wire harness in which a plurality of electric wires are bundled, between various sensors and an electric control unit (ECU). Signal transmission can be performed, and it is possible to reduce weight and cost by saving space. Demand from related businesses focusing on these usefulness is aroused and can contribute to the machine industry through the distribution of related parts.

1 Suspension mechanism 2 Compression coil spring (coil spring, first electrode)
4 Insulating Paint Layer 5 Second Electrode Band 5a Abdomen 5b Node 6 Protective Layer 11 Resin Cap 12 Second Conductive Wire 14 First Conductive Wire 27 Guide Tube 29 Winding Drum 30 Electric Wire 30a Flat Wire 37 Meandering Belt 37a Abdomen 37b Node 40 Outer insulating layer 41 Third electrode strip 42 Composite layer

Claims (8)

In a conductive electrical component structure having a coil spring as a first electrode that repeatedly receives expansion and contraction displacement due to dynamic load during operation,
An insulating paint layer applied to the outer surface of the coil spring;
A second electrode strip disposed in close contact with the outer surface of the insulating paint layer;
A protective layer disposed in close contact so as to cover the second electrode strip on the outer surface of the insulating paint layer,
The second electrode band is arranged in a meandering shape along the coil wire axis of the coil spring on the outer surface of the insulating paint layer, and is bent as a meandering band in which a large number of abdomen and a large number of nodes are alternately and continuously formed. Has been completed,
A conductive electrical component structure characterized in that a displacement generated in the second electrode band can be absorbed by the abdomen and the node when the expansion and contraction is caused by the operation of the coil spring.   The coil spring is incorporated in a suspension mechanism that supports a vehicle body of a vehicle, and the first electrode and the second electrode belt cooperate to send a signal from a sensor provided on the vehicle body to an electric control computer. The conductive electrical component structure according to claim 1, wherein the conductive electrical component structure is configured to be able to transmit.   3. The conductive electrical component structure according to claim 1, wherein the second electrode band is made of a conductive synthetic resin. 4.   A resin cap is fitted and fixed to the linear portion, which is one end of the coil spring, and the second conductive wire that is electrically connected to the second electrode band in accordance with the fitting and fixing of the resin cap is the The first conductive line led out from the resin cap and electrically connected to the first electrode is led out at a central portion of the resin cap. Conductive electrical component structure according to one.   A composite layer formed by closely arranging a third electrode strip on an outer insulating layer is provided, the composite layer is disposed between the second electrode strip and the protective layer, and the outer insulating layer is disposed on the second electrode strip. 2. The conductive electrical component structure according to claim 1, wherein the third electrode strip is disposed in close contact with an outer side and is disposed in close contact with the inner side of the protective layer.   The said 2nd electrode belt | band | zone has one shape selected from the meandering shape group which consists of a wave shape, a zigzag shape, uneven | corrugated shape, a cosine curve, and a sine curve, Any one of Claim 1 thru | or 5 characterized by the above-mentioned. The conductive electrical component structure according to any one of the above.   2. The conductive electrical component structure according to claim 1, wherein a thin and long flexible printed circuit band is provided as a functional member in place of the second electrode band. In the method for manufacturing a conductive electrical component structure having a coil spring that repeatedly receives expansion and contraction displacement due to dynamic load during operation as a first electrode,
An application step of applying an insulating paint layer to the outer surface of the coil spring;
A deformation process in which a conductive wire drawn out from a winding drum is pressed and deformed into a flat state having a rectangular cross section to form a flat electric wire;
A curve that allows the flat electric wire to be arranged in a meandering shape along the coil wire axis of the coil spring on the outer surface of the insulating coating layer, and bends as a meandering band in which a large number of abdomen and a large number of nodes are alternately formed. And the process
A first arrangement step of arranging the meandering band as a second electrode band in close contact with the outer surface of the insulating paint layer;
A second disposing step of disposing the protective layer in close contact with the outer surface and the second electrode strip so that the protective layer covers the second electrode strip with the outer surface of the insulating coating layer;
A method of manufacturing a conductive electrical component structure, wherein a displacement generated in the second electrode band can be absorbed by the abdomen and the node when an expansion / contraction displacement occurs due to the operation of the coil spring.

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