JP2003172748A - Conductive contact - Google Patents

Abstract

(57) [Problem] To prevent attenuation of a high-frequency signal, facilitate formation, and improve inspection accuracy and durability. A pair of conductive movable bodies (3, 4) urged by a coil spring (2) are accommodated in a support hole (13) of a holder (12), and the conductive movable body (3) is inspected during inspection.
Is mounted so as to abut the conductive movable body 4
Are closely connected to the wiring plate 15, are fixed to the conductive movable body 3, and are tightly wound coil bodies 16 extending toward the conductive movable body 4.
Are disposed in the coil spring 2 and the conductive movable body 4
Is electrically connected slidably to the tightly wound coil body 16. The conduction path L1 of the electric signal at the time of inspection is formed to have a minimum length via the closely wound coil body 16.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electric signal extracted by bringing a protruding end of a conductive movable body into contact with an object to be inspected (semiconductor chip, liquid crystal display substrate, TAB, package substrate (PKG), etc.). The present invention relates to a conductive contact having a signal transmission line for transmitting an electric field to an external circuit.

[0002]

2. Description of the Related Art Conventionally, a conductive contact used in a contact probe for electrically inspecting a conductor pattern of a printed wiring board or an electronic element has a pair of conductive members biased in opposite directions by a coil spring. The flexible movable body is accommodated in a support hole provided in a holder made of an insulating material while allowing reciprocal movement, and one conductive movable body is attached so as to abut the inspection object at the time of inspection. The other conductive movable body is electrically connected to and attached to the wiring plate laminated on the holder.

In this conductive contact, in order to avoid attenuation of high frequency signals without shortening the operating life of the spring, the electrical connection length which is the distance between the tips of the pair of conductive movable bodies. Size must be minimized.

A conductive contact developed based on this idea is disclosed in Japanese Patent No. 3210645.

FIG. 6 shows the conductive contact 100 in a free state before being assembled to a holder. The conductive contact 100 is
It is composed of a coil spring 2 and a pair of conductive movable bodies 3 and 4 which are biased by the coil spring 2 in opposite directions. One conductive movable body 3 is attached so as to come into contact with an object to be inspected at the time of inspection, and another conductive movable body 4 is electrically connected to a wiring plate (not shown) laminated on the holder. It is attached.

The electrically conductive movable body 3 has a flange portion 5, an inspection tip portion 6 formed on one end side of the flange portion 5 and in contact with an object to be inspected, and a shaft portion 7 formed on the other end side of the flange portion 5. And are integrally formed. The shaft portion 7 is formed with a sliding contact portion 8 having a slightly larger diameter at its tip.

The electrically conductive movable member 4 has a flange portion 9, an electrode tip portion 10 formed on one end side of the flange portion 9 and in contact with an electrode of a wiring plate, and a tubular portion formed on the other end side of the flange portion 9. 11 and 11 are integrally formed. Tube 1
1 has an inner diameter slightly larger than that of the sliding contact portion 8, and a crimp portion 11a is formed at the tip of the opening to reduce the inner diameter.

The conductive movable bodies 3 and 4 are slidably connected to each other by disposing the sliding contact portion 8 in the cylindrical portion 11 and preventing the sliding contact portion 8 from coming off by the caulking portion 11a. The coil springs 2 located outside the portion 11 and arranged between the flange portions 5 and 9 are urged and connected in a direction away from each other to be connected.

The conductive contact 100 is constructed by accommodating the connected conductive movable bodies 3 and 4 in the support holes of an appropriate holder.

The conductive contact 100 constructed in this way
According to the method, the conductive movable body 3 is inspected in a state in which the electrode tip portion 10 of the conductive movable body 4 is elastically connected to and electrically connected to the lead wire of the wiring plate (not shown) laminated on the holder. The tip portion 6 is used by elastically contacting a device under test (not shown). The conduction path of the electric signal at the time of this inspection passes from the object to be inspected to the conductive movable body 3, and from the sliding contact portion 8 of the shaft portion 7 thereof to the electrode tip portion 10 of the conductive movable body 4 via the tubular portion 11. Is transmitted to the lead wire of the wiring plate. As a result, it is possible to inspect the object to be inspected for a short circuit or disconnection.

According to the conductive contact 100, since the coil spring 2 having a large diameter and a predetermined length is used, the operating life of the spring is not shortened and the cylinder spring is sufficiently shorter than the coil spring 2. Since the signal conduction path is formed through the portion 11, it is possible to avoid the attenuation of the high frequency signal.

[0012]

However, the conductive contact 100 has the following various problems.

First, since the cylindrical portion 11 must be formed by shaving a metal rod-shaped body having an extremely small diameter (for example, an outer diameter of 0.1 to 0.3 mm), it has a problem that it is very difficult to form the cylindrical portion. ing.

Further, it is difficult to plate the inner surface of the tubular portion 11, so that plating unevenness is likely to occur, and the unevenness of the resistance value becomes large due to the plating unevenness, resulting in a decrease in inspection accuracy. have.

Further, at the time of inspection, the sliding contact portion 8 of the shaft portion 7 slides in the cylindrical portion 11, so that the rigid bodies come into contact with each other and the sliding resistance increases, which results in prying and twisting. There is also a problem that the plating is liable to be peeled off, resulting in deterioration of inspection accuracy and durability.

Therefore, according to the present invention, it is possible to prevent the reduction of the operating life of the spring and the attenuation of the high frequency signal as usual, and the formation is easy, and the stable plating layer and the small sliding resistance at the time of inspection are used. The object of the present invention is to provide a conductive contact capable of improving inspection accuracy and durability.

[0017]

In order to achieve the above-mentioned object, the invention of claim 1 is such that a pair of conductive movable members biased in opposite directions by a coil spring is a holder made of an insulator. It is accommodated in a provided support hole while allowing reciprocal movement, one conductive movable body is attached so as to abut on the object to be inspected at the time of inspection, and the other conductive movable body is In a conductive contact constituted by being electrically connected to and attached to a wiring plate laminated on a holder, one end of the conductive contact is fixed to one of the pair of conductive movable bodies. A close-wound coil body having the other end extending toward the other conductive movable body is formed shorter than the coil spring and is disposed in the coil spring, The flexible movable body is closely wound. Characterized in that it is slidably electrically connected to yl body.

Therefore, according to the first aspect of the invention, the conduction path of the electric signal at the time of inspection passes from the object to be inspected to one conductive movable body and to the other conductive movable body via the closely wound coil body. It is configured to be transmitted and reach the wiring plate, and is formed to have a minimum length via a tightly wound coil body.

Since the coil spring is arranged at the outermost part, it can be formed to have a large diameter and a predetermined length.

The closely wound coil body can be easily formed with a stable plating layer by coiling the plated wire.

During the inspection, the other conductive movable body and the closely wound coil body slide on each other, so that the rigid body (the other electrically conductive movable body) and the flexible body (close wound coil body).
It comes into contact with and the sliding resistance decreases.

The invention of claim 2 is the conductive contact according to claim 1, wherein the other conductive movable body is
It is characterized in that it is formed to have a shaft portion that comes into contact with the inner surface of the closely wound coil body.

Therefore, in the invention of claim 2, at the time of inspection, the shaft portion of the other conductive movable body and the closely wound coil body are
Since they slide on each other, the rigid body (shaft portion) and the flexible body (contact winding coil body) come into contact with each other, and the sliding resistance is reduced. Due to its flexibility, the close-wound coil body comes into contact with the shaft portion of the other conductive movable body at an appropriate contact pressure due to the generation of a lateral load in the radial direction. By this contact pressure,
The shaft portion and the closely wound coil body come into contact with each other, so that a stable sliding contact portion can be formed.

The invention according to claim 3 is the conductive contact according to claim 1 or 2, wherein the pair of conductive movable bodies are fixed to both ends of the coil spring and sub-assembled. It is characterized by being

Therefore, in the third aspect of the invention, the pair of conductive movable bodies, the closely wound coil body, and the coil spring are
It can be handled as one article.

The invention according to claim 4 is the conductive contact according to any one of claims 1 to 3, wherein the support hole is such that the tip of the one conductive movable body is outward. A step portion is provided on one end side so as to be projected and prevented from coming off, and the other end side is formed with the same hole diameter as the opening diameter on the wiring plate side.

Therefore, in the invention of claim 4, the pair of conductive movable bodies, the closely wound coil body, and the coil spring can be easily accommodated in and removed from the support hole through the opening of the support hole on the wiring plate side. Can be done.

Further, the invention of claim 5 is the conductive contact according to any one of claims 1 to 4, wherein the one conductive movable body is such that one end of the closely wound coil body is It is characterized in that it is formed with a coupling concave portion that is press-fitted and fixed.

Therefore, in the fifth aspect of the invention, the stroke of the other conductive movable body that slides inside the closely wound coil body can be earned by the depth of the coupling recessed portion, and the electric power at the time of inspection can be obtained accordingly. The signal conduction path can be shortened.

The invention according to claim 6 is the conductive contact according to any one of claims 1 to 5, wherein the closely wound coil body is formed by closely contacting flat surfaces of constituent wires with each other. It is characterized in that it constitutes the close contact part of the body.

Therefore, in the invention of claim 6, the contact area of the contact portion of the contact winding coil body is increased, whereby the conduction path of the electric signal at the time of inspection is stabilized and the variation of the resistance value is reduced. You can

The invention according to claim 7 is the conductive contact according to any one of claims 1 to 6, wherein the coil spring is formed by coiling a wire having a rectangular cross section. It is characterized by

Therefore, in the invention of claim 7, the spring load of the coil spring can be increased. If the coil spring has the same outer diameter, it is possible to increase the spring constant by using a wire having a rectangular cross section rather than a circular cross section, and as a result, the spring load can be increased.

[0034]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described below with reference to the drawings. The same members and members having the same functions as those shown in FIG. 6 are designated by the same reference numerals.

FIG. 1 shows a conductive contact 1 as a first embodiment of the present invention. In FIG. 1, (a) and (b) show a standby state and an inspection state, respectively. The contact probe to which the present invention is applied is configured by arranging a plurality of conductive contacts 1 vertically and horizontally in parallel at a predetermined pitch.

The conductive contact 1 is composed of a pair of conductive movable members 3, 4 which are biased in opposite directions by a coil spring 2.
Is a support hole 13 provided in a holder 12 made of an insulator.
Is accommodated so as to allow reciprocating movement, one conductive movable body 3 is attached so as to abut the inspected body 14 at the time of inspection, and the other conductive movable body 4 is attached to the holder 12.
It is configured to be electrically connected to and attached to the wiring plate 15 laminated on.

Further, the conductive contact 1 has one end fixed to the conductive movable body 3 of the pair of conductive movable bodies 3 and 4, and the other end facing the other conductive movable body 4. The close-wound coil body 16 of which the portion is extended is formed shorter than the coil spring 2 and is disposed inside the coil spring 2, and the conductive movable body 4 is provided with respect to the close-wound coil body 16. And is slidably electrically connected.

Preferably, the conductive contactor 1 is formed so that the conductive movable body 4 has a shaft portion 17 that comes into contact with the inner surface of the closely wound coil body 16.

Specifically, the conductive movable body 3 has a flange portion 3a, a needle-shaped head portion 3b is formed on one side of the flange portion 3a, and a boss portion 3c is formed on the other side of the flange portion 3a. The fixed protrusion 18 is integrally formed via the interposition. The conductive movable body 4 has a flange portion 4a, forms a needle-shaped head portion 4b on one side of the flange portion 4a, and has a long shaft portion 17 on the other side of the flange portion 4a via a boss portion 4c.
Are integrally formed. This shaft portion 17 is
In the standby state (state in which the conductive movable body 3 is not in contact with the inspection object 14) shown in FIG. 1A, the tip has a length that allows it to reach the other end of the closely wound coil body 16. The diameter is smaller than that of the boss portion 4c.

The coil spring 2 is formed as a pitch-wound compression coil spring, and is mounted between the flange portions 3a and 4a of the conductive movable bodies 3 and 4. The coil spring 2 is formed by, for example, coiling a gold-plated piano wire (SWP). The closely wound coil body 16 is
The wire rod is formed as a close contact coil spring in which the wire rods are in close contact with each other, and one end of the wire rod is press-fitted and attached to the outside of the fixed protrusion 18 of the conductive movable body 3. This closely wound coil body 16
Is formed by coiling a beryllium copper (BeCu) wire plated with gold, for example.

The holder 12 has a two-layer structure in which laminated bodies 19 and 20 are laminated, and the support hole 13 is formed by communicating through holes formed in the laminated bodies 19 and 20, respectively. ing. The support hole 13 has stepped portions 19a and 20a formed at both ends thereof so as to project inward.

The assembly of the pair of electrically conductive movable bodies 3 and 4, the coil spring 2, and the closely wound coil body 16 is positioned in the support hole 13 and assembled to the holder 12.
In this assembled state, the conductive movable bodies 3 and 4 are accommodated in the support hole 13 while allowing the reciprocating motion while allowing the tip portions of the needle-shaped heads 3b and 4b to project outward from the holder 12. Further, despite the spring force of the coil spring 2, the flange portions 3a and 4a are abutted against the stepped portions 20a and 19a, respectively, and are prevented from coming off.

The conductive contact 1 is constructed by further stacking the wiring plate 15 on the upper surface of the holder 12 (specifically, the stack 19). Due to this stacking, the conductive movable body 4 resists the spring force of the coil spring 2 and supports the support hole 1
As the needle head 4b is sunk into the pad 3, the tip of the needle-shaped head portion 4b elastically contacts the pad portion 21a of the lead wire 21 of the wiring plate 15 for electrical connection.

The conductive contact 1 thus constructed has
The tip of the needle-shaped head 3b of the conductive movable body 3 can be elastically contacted with the conductive portion 22 of the object 14 to be inspected (see FIG. 1B). The conduction path L1 of the electric signal at the time of this inspection is the conductive portion 2 as shown by the solid line arrow in FIG.
2 through the electrically conductive movable body 3, and from its fixed projection 18 to the closely wound coil body 16, the closely wound coil body 16 and the shaft portion 17.
Is transmitted to the conductive movable body 4 via the sliding contact portion A with the shaft 17 and the conductive movable body 4 and the lead wire 21.
(Pad part 21a). As a result, the inspection object 14
It is possible to inspect whether or not there is a short circuit or a break in the conductive portion 22.

As described above, according to the conductive contact 1, the conduction path L1 of the electric signal at the time of the inspection is determined by the close-wound coil body 16.
Since it is formed to have the minimum length through the, it is possible to prevent the attenuation of the high frequency signal.

Since the coil spring 2 is arranged at the outermost part, it can be formed to have a large diameter and a predetermined length, so that it can be designed as a spring having a desired spring load. This can prevent the operating life of the spring from being shortened.

Further, the close-wound coil body 16 can be easily formed by coiling a plated wire material so as to have a stable plating layer. The sliding contact portion A between the wound coil body 16 and the shaft portion 17 can be stably obtained by the plating layer, and consequently the variation in the resistance value can be suppressed to be small.

At the time of inspection, the shaft portion 1 of the conductive movable body 4 is also included.
7 and the tightly wound coil body 16 slide on each other, so that the rigid body (the shaft portion 17) and the flexible body (the tightly wound coil body 1).
6) and the sliding resistance becomes small, which makes it possible to suppress variations in resistance value.

Further, the close-wound coil body 16 comes into contact with the shaft portion 17 of the conductive movable body 4 with an appropriate contact pressure due to the lateral load generated in the radial direction due to its flexibility. Due to this contact pressure, the shaft portion 17 and the closely wound coil body 16 come into contact with each other, and a stable sliding contact portion A can be formed.
This also makes it possible to suppress variations in resistance value.

In the conductive contact 1, preferably, the pair of conductive movable bodies 3 and 4 are fixed to both ends of the coil spring 2 and sub-assembled. That is, the closely wound portions 2 formed at both ends of the coil spring 2
By pressing a and 2b into the boss portions 3c and 4c, respectively, the pair of conductive movable bodies 3 and 4 can be fixed to the coil spring 2 with the closely wound coil body 16 arranged inside.

According to this structure, the pair of conductive movable bodies 3 and 4, the closely wound coil body 16, and the coil spring 2 are provided.
Can be handled as one article, which simplifies part management, facilitates assembly, and facilitates removal during replacement.

FIG. 2 shows a conductive contact 30 as a second embodiment of the present invention. The conductive contact 30 is different only in the shapes of the conductive movable body 4 and the support hole 13,
Other configurations are the same as those of the conductive contact 1.

That is, in the conductive contact 30, the support hole 13 has the stepped portion 20a at one end so that the needle-shaped head 3b of the conductive movable body 3 projects outward and is prevented from coming off. It is provided, and the other end side is formed with the same hole diameter as the opening diameter on the wiring plate 15 side. The support hole 13 is formed so as to penetrate the holder 12 formed as an integral body.
The conductive movable body 4 does not require the flange portion 4a described above,
The needle-shaped head portion 4b, the boss portion 4c, and the shaft portion 17 are integrally provided and configured.

According to the conductive contact 30, the pair of conductive movable bodies 3, 4, the closely wound coil body 16 and the coil spring 2 are accommodated in and removed from the support hole 13 by the wiring plate 15 in the support hole 13. It can be easily performed through the opening on the side, whereby the assembling and dismounting work can be simplified.

FIG. 3 shows a conductive contact 40 as a third embodiment of the present invention. In FIG. 3, (a) is a state before the wiring plates 15 are stacked, and (b) is the wiring plate 1.
5 shows the state after stacking, and (c) shows the inspection state. This conductive contact 40 is used for the conductive movable body 3
Further, only the holder 12 is different, and other configurations are the same as those of the conductive contact 1 described above. Therefore, the same components are given the same reference numerals and the description thereof is omitted.

In the conductive contactor 40, the conductive movable body 3 does not require the above-mentioned needle-shaped head 3b, and the flange 3
a, the boss 3c, and the fixed protrusion 18 are integrally provided,
In addition, a conical concave portion 3d that abuts the conductive portion 22 of the device under test 14 is provided in the same plane of the flange portion 3a, and the entire structure is provided.

Further, the holder 12 has a laminated body 2 having a support hole 13 for accommodating an assembly of a pair of conductive movable bodies 3 and 4.
3 and a guide hole 2 for guiding the conductive portion 22 of the device under test 14
5 and a laminated body 24 including 5 are laminated. The support hole 13 and the guide hole 25 communicate with each other due to the stacking. The guide hole 25 has a diameter smaller than that of the support hole 13. Therefore, a stepped portion 26 is formed at the boundary portion by the above-mentioned lamination. The conductive movable body 3 has a flange portion 3
The a is brought into contact with the stepped portion 26 to prevent it from coming off.

This conductive contact 40 can form a conduction path L3 for an electric signal at the time of inspection, and can achieve the same effect as the conductive contact 1 described above.

FIG. 4 shows a conductive movable body 3 as another embodiment. The conductive movable body 3 is formed to have a coupling recess 27 into which one end of the tightly wound coil body 16 is press-fitted and fixed. In the present embodiment, the coupling concave portion 27 is formed as an inner portion of the cylindrical portion 3e integrally formed with the boss portion 3c of the conductive movable body 3.

Since this conductive movable body 3 does not have the fixed projection 18 of the other conductive movable body 3, the closely wound coil body 16 is inserted into the coupling recess 27 as shown in FIG. The coil coil body 16 and the shaft portion 1 are closely wound by that amount.
The contact point with 7 corresponds to the depth of the coupling recess 27 and the conductive movable body 3
It is possible to lower the thickness of the holder 12, thereby making it possible to reduce the thickness of the holder 12 and to shorten the conduction path of the electric signal at the time of inspection, and thus to more surely prevent the attenuation of the high frequency signal at the time of inspection. it can.

FIG. 5 shows a conductive contact 50 as a fourth embodiment of the present invention. FIG. 5A shows a state before the wiring plates 15 are stacked. The conductive contact 50 is
The other configuration is the same as that of the conductive contact 40 described above, except that the coil spring 2 and the close-wound coil body 16 are configured by using a square wire.

In this conductive contact 50, the coil spring 2 does not necessarily have to be formed by a rectangular wire having a rectangular cross section, and may be formed by a round wire as in the other embodiments. When the coil spring 2 is configured by a rectangular cross-section rectangular wire, the spring load can be increased, and a high-load spring can be designed.

As shown in FIG. 5 (b), the close-wound coil body 16 has a close-contact portion S in which flat surfaces of the constituent wire members are in close contact with each other. As the constituent wire rods at this time,
A wire having a cross-sectional shape having parallel portions such as a square, a rectangle long in the radial direction, or an ellipse is used.

According to this structure, the tightly wound coil body 16
The contact area of the close contact portion S becomes large, which stabilizes the conduction path of the electric signal at the time of inspection, and can reduce the variation in resistance value.

[0065]

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

That is, according to the first aspect of the present invention, since the coil spring can be formed to have a large diameter and a predetermined length, it is possible to prevent the operating life of the spring from being shortened, and at the same time, to provide an electrical signal for inspection. Since the conduction path can be formed to have the minimum length through the tightly wound coil body, it is possible to prevent the high frequency signal from being attenuated.

Further, the closely wound coil body can be easily formed by coiling the plated wire and can be easily formed with a stable plating layer.

Further, since the coil spring and the closely wound coil body are constructed as separate bodies, they can be constructed with specifications (material, wire diameter, plating) according to their respective functions, and both can be oriented. Since it has no property (orientation), it is easy to assemble automatically.

During inspection, the other conductive movable body and the closely wound coil body slide on each other, so that the rigid body (the other electrically conductive movable body) and the flexible body (close wound coil body).
The contact resistance with the stable plating layer reduces the sliding resistance, which improves the inspection accuracy and durability.

According to the second aspect of the present invention, the close-wound coil body has a sliding contact portion which is stable with the shaft portion of the other conductive movable body due to the lateral load generated in the radial direction due to its flexibility. It is possible to suppress the variation of the resistance value and improve the inspection accuracy.

According to the third aspect of the invention, the pair of conductive movable bodies, the closely wound coil body, and the coil spring are
Since it can be handled as one article, simplification of parts management, assembly work, and replacement work can be achieved.

According to the invention of claim 4, the pair of conductive movable bodies, the closely wound coil body, and the coil spring are accommodated in and removed from the support holes through the openings of the support holes on the wiring plate side. This can be performed easily, and the work can be simplified.

According to the fifth aspect of the invention, the stroke of the other conductive movable body that slides inside the tightly wound coil body can be earned by the depth of the coupling concave portion, and the stroke can be increased by that amount during inspection. Because the electrical signal conduction path can be shortened,
It is possible to more reliably prevent the attenuation of the high frequency signal.

Further, according to the invention of claim 6, the contact area of the close contact portion of the close winding coil body is increased, whereby the conduction path of the electric signal at the time of inspection is stabilized and the variation of the resistance value is reduced. Therefore, the inspection accuracy can be improved.

Further, according to the invention of claim 7, since the spring load of the coil spring can be increased, a coil spring having a desired spring load can be easily designed.

[Brief description of drawings]

FIG. 1 is a longitudinal sectional view of a conductive contact according to a first embodiment of the present invention, in which (a) shows a standby state and (b) shows an inspection state.

FIG. 2 is a vertical cross-sectional view of a conductive contact according to a second embodiment of the present invention.

FIG. 3 is a vertical sectional view of a conductive contact according to a third embodiment of the present invention, in which (a) is a state before the wiring plates are laminated,
(B) shows a state after the wiring plates are laminated, and (c) shows an inspection state.

FIG. 4 is a cross-sectional view of a conductive movable body according to another embodiment of the present invention.

5A and 5B show a conductive contact according to a fourth embodiment of the present invention, wherein FIG. 5A is a vertical sectional view and FIG.

FIG. 6 is a vertical cross-sectional view of a conventional conductive contact.

[Explanation of symbols]

1,30,40,50 Conductive contact 2 coil spring 3,4 conductive movable body 12 holder 13 Support holes 14 Inspected object 15 wiring plate 16 Closely wound coil body 17 Shaft 20a step 27 coupling recess L1 conduction path S Adhesion part (of the closely wound coil body)

Claims (7)

[Claims] 1. A pair of conductive movable bodies biased in opposite directions by coil springs are accommodated in support holes provided in a holder made of an insulating material while allowing reciprocal movement.
One electrically conductive movable body is attached so as to abut the inspection object at the time of inspection, and the other electrically conductive movable body is electrically connected to the wiring plate laminated on the holder and attached. In the conductive contact configured, one end is fixed to one of the pair of conductive movable bodies and the other end is extended toward the other conductive movable body. The closely wound coil body is formed shorter than the coil spring and is disposed in the coil spring, and the other conductive movable body is slidable with respect to the closely wound coil body. A conductive contact characterized by being electrically connected. 2. The conductive contactor according to claim 1, wherein the other conductive movable body has a shaft portion that abuts an inner surface of the closely wound coil body. Characteristic conductive contact. 3. The conductive contact according to claim 1, wherein the pair of conductive movable bodies are fixed to both ends of the coil spring and sub-assembled, respectively. Sex contactor. 4. The conductive contact according to any one of claims 1 to 3, wherein the support hole is retained while the tip of the one conductive movable body projects outward. As described above, the conductive contact is characterized in that a step portion is provided on one end side, and the other end side is formed with the same hole diameter as the opening diameter on the side of the wiring plate. 5. The conductive contact according to any one of claims 1 to 4, wherein the one conductive movable body has a coupling recess into which one end of the closely wound coil body is press-fitted and fixed. A conductive contact characterized by being formed. 6. The conductive contactor according to claim 1, wherein the close-wound coil body forms a close-contact portion of the coil body by closely contacting flat surfaces of constituent wire rods. A conductive contact characterized in that 7. The conductive contact according to claim 1, wherein the coil spring is formed by coiling a wire having a rectangular cross section. Contactor.