KR20100129678A - Electric contact and inspection jig therewith - Google Patents

Abstract

PURPOSE: An electric contact and an inspection jig therewith are provided to suppress contact fail and production costs. CONSTITUTION: An electrical contact(2) is arranged inside an accepting hole(3) of a testing jig(1). The electrical contact is composed from a wire(13). The end of a test side is arranged in longitudinal direction of the electrical contact to be contacted on a circuit board. A jig side terminal(5) is contacted with the contact of the testing jig. A main body(12) connects the end of a test side to the end of a jig to be accommodated into a receiving hole.

Description

ELECTRIC CONTACT AND INSPECTION JIG THEREWITH}

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electrical contactor for inspecting electrical characteristics of a circuit board or electronic component, and an inspection jig provided with the electrical contactor.

Generally, an inspection jig having a plurality of electrical contacts in contact with an inspection object is used for an electrical inspection for detecting an abnormality such as a wiring pattern of a circuit board or a short circuit or disconnection of an integrated circuit such as an IC. have. As the electrical contactor, for example, as disclosed in Patent Literatures 1 and 2, many contactors having a configuration in which a pin-shaped plunger is supported by a coil spring are used. In the electrical contact of this configuration, the plunger can elastically retract with respect to the inspection object by the elastic deformation of the coil spring. Therefore, the plunger can be brought into contact with the inspection object at an appropriate pressure.

[Prior Art Literature]

[Patent Document]

[Patent Document 1] Japanese Patent Application Laid-Open No. 2008-275421

[Patent Document 2] Japanese Patent Application Laid-Open No. 2008-546164

However, in the electrical contacts described in Patent Documents 1 and 2, the electrical contacts are composed of a plurality of parts such as a plunger and a coil spring. For this reason, troubles of poor contact between the parts are likely to occur, and the number of parts and the number of assembling steps are large.

Here, an object of the present invention is to provide an electrical contactor which can hardly generate troubles of contact failure and can suppress a production cost, and an inspection jig provided with the electrical contactor.

MEANS TO SOLVE THE PROBLEM In order to solve the said subject, this invention is used for the test jig which examines the electrical characteristic of a test target, and is an electrical contact arrange | positioned inside the accommodating hole of a test jig, and an electrical contact is a wire rod from a wire rod. At the same time, the inspection side end portion disposed on one end side in the longitudinal direction of the electrical contactor in contact with the inspection object and the jig side end portion disposed on the other end side with respect to the one end side and in contact with the contact point of the inspection jig and inspection A side end part and a jig side end part are connected, and it has a main body part accommodated in a receiving hole, and a main body part has a spring part wound so that a wire rod may have a spring property in a spiral form.

In the electrical contact of the present invention, at least one of the inspection side end portion or the jig side end portion may be formed in a spring shape by winding a wire rod.

Moreover, in the electrical contact of this invention, the wire rod may be wound so that at least one of an inspection side edge part or a jig side edge part may become small in diameter toward a tip.

Moreover, in the electrical contact of this invention, the at least one tip part of a test | inspection side edge part or a jig | edge side edge part may be provided with the main upper part extended along the crimp of the wound wire.

Moreover, in the electrical contact of this invention, the spherical part may be provided in the at least one tip part of an inspection side edge part or a jig side edge part.

In the electrical contactor of the present invention, at least one of the inspection side end portion or the jig side end portion may be formed as a half portion that is folded back from the end side of the electrical contact portion to the main body side.

In addition, in the electrical contact of the present invention, the main body portion may have an adhesive winding portion wound between the spring portion and the inspection side end portion so as to be in close contact with the wire rods.

In the electrical contact of the present invention, a portion of the spring portion of the main body portion may have a large diameter portion larger than the diameter of the other portion of the spring portion so as to be press-fitted into the receiving hole.

In the electrical contact of the present invention, the electrical contact may be coated with gold plating.

MEANS TO SOLVE THE PROBLEM In order to solve the said subject, this invention is provided with the container which has a receiving hole which accommodates an electrical contact in the test jig which contacts a test object with an electrical contact, and test | inspects the electrical property of a test object, It is assumed that the electrical contactor described above is provided as the contactor.

MEANS TO SOLVE THE PROBLEM In order to solve the said subject, this invention is provided with the container which has an accommodating hole which accommodates an electrical contact in the test jig which contacts a test object with an electrical contact, and test | inspects the electrical characteristic of a test object, The contactor is the electrical contact described above, and the receiving hole has a small diameter receiving portion for receiving a large diameter receiving portion for receiving a large diameter portion of the electrical contactor and a small diameter portion for a portion other than the large diameter portion of the spring portion, and a boundary portion between the large diameter receiving portion and the small diameter receiving portion. It is good also as what the edge part which a large diameter part abuts is formed in the back part.

As described above, according to the electrical contactor and the inspection jig of the present invention, it is possible to prevent the occurrence of trouble of contact failure and to suppress the production cost.

1 is a front view showing an inspection jig according to Embodiment 1 of the present invention.
FIG. 2 is a diagram showing an inspection jig from the E-E direction in FIG. 1.
3 is an enlarged cross-sectional view for explaining the internal structure of the inspection jig shown in FIG.
4 is a front view of the contactor shown in FIG. 3.
5 is a plan view of the contactor shown in FIG. 3.
6 is a bottom view of the contactor shown in FIG. 3.
Fig. 7 is an enlarged cross-sectional view showing a state after arranging a contactor in a receiving hole of the container and before placing the electrode retainer on the container.
8 is an enlarged cross-sectional view of the inspection jig, showing a state before contacting the contactor with the circuit board.
9 is an enlarged cross-sectional view of the inspection jig and shows a state after contacting a contactor with a circuit board.
It is a figure which shows the state which the tip part of the test | inspection side edge part contacted inclined with respect to the circuit electrode.
It is a front view which shows the structure of the contactor which concerns on Embodiment 2 of this invention.
It is a bottom view which shows the structure of the contactor shown in FIG.
It is a front view which shows the structure of the contactor which concerns on Embodiment 3 of this invention.
It is a figure which shows the state in which the spherical part of the contactor shown in FIG. 13 abuts on the resist.
It is a figure which shows the state in which the spherical part of the contactor shown in FIG. 14 entered in the recessed part, and contacted the circuit electrode.
It is a figure explaining the method of forming the spherical part of the contactor shown in FIG.
It is a front view which shows the structure of the contactor which concerns on Embodiment 4 of this invention.
FIG. 18 is a view showing a state in which half of the contacts shown in FIG. 17 abut on the resist. FIG.
FIG. 19 is a view showing a state in which half of the contactor shown in FIG. 17 enters into the recessed portion and contacts the circuit electrode. FIG.
FIG. 20 is a view for explaining the arrangement of the contactor shown in FIG. 17 from the small-diameter hole side. FIG.

 (1st embodiment of contactor)

EMBODIMENT OF THE INVENTION Hereinafter, 1st Embodiment of this invention is described based on drawing.

 (Configuration of Inspection Jig)

First, the whole structure of the inspection jig 1 is demonstrated, referring FIG. 1 to FIG. 1 is a diagram showing a test jig 1 according to an embodiment of the present invention. FIG. 2: is a figure which shows the inspection jig 1 seen from the E-E direction of FIG.

3 is an enlarged cross-sectional view for explaining the internal structure of the inspection jig 1 shown in FIGS. 1 and 2. In addition, in FIG. 2, only some electrical contacts 2 and the receiving hole 3 are attached | subjected. In the following description, the explanation will be given with the arrow X1 direction being left, the X2 direction being right, the Y1 direction upward, the Y2 direction downward, and the Z1 direction forward and the Z2 direction backward.

The inspection jig 1 of this embodiment inspects the electrical characteristics of the circuit board P (refer FIG. 8, 9 etc.) which are test objects, such as a circuit board or IC, and the short circuit of the circuit board P is carried out. Or it is used for electrical inspection to detect abnormalities such as disconnection.

1 to 3, the inspection jig 1 includes a plurality of accommodating holes in which a plurality of electrical contacts 2 (hereinafter referred to as "contactors 2") and contactors 2 are arranged one by one. The plurality of electrodes 6 and the plurality of electrodes 6 which are in contact with the jig-side end 5 of the contactor 2 accommodated in the receptor 4 and the receiving hole 3 in which the 3 is formed are held. The main body part of the test | inspection apparatus (not shown) provided with the electrode holding body 7 and the test jig 1, and the wiring part 8 which electrically connect the test jig 1 are provided. The wiring part 8 is comprised by the some conductor wire 9 (refer FIG. 3) with which each electrode 6 is equipped.

The contactor 2 is a test | inspection which contacts the circuit electrode P1 (refer FIG. 8, FIG. 9 etc.) as the test | inspection terminal of the jig side edge part 5 which contact | connects the electrode 6, and the circuit board P. FIG. The side end portion 10, the jig side end portion 5, and the inspection side end portion 10 are connected to each other, and a main body portion 12 having a portion accommodated in the accommodation hole 3 is provided.

The contactor 2 is integrally formed from the jig side end 5 to the inspection side end 10 by the conductive wire 13. The wire 13 is made of, for example, a material in which the spiral portion has a spring property when wound in a spiral shape. As the wire 13, for example, a nickel alloy, a piano wire, a tungsten alloy, or the like can be used. The wire rod 13 forming the contactor 2 is, for example, about 0.05 mm in diameter, and is inspected from the tip portion 14 of the jig side end portion 5 in contact with the electrode 6. The length to the tip part 15 of the side edge part 10 has a structure of about 4.8 mm.

The receptor 4 is formed in a block shape with an insulating material. In the accommodation body 4, as described above, a plurality of accommodation holes 3 are formed. Specifically, as shown in Figs. 2 and 3, the receiving body 4 is provided with a plurality of receiving holes 3 penetrating in the vertical direction. In addition, although FIG. 2 shows the container 4 in which the accommodating hole 3 was formed uniformly by predetermined pitch in the front-back direction and the left-right direction for convenience of description, in reality, the accommodation hole 3 is shown in FIG. The arrangement corresponds to the arrangement of the circuit electrodes P1 of the circuit board P. As shown in FIG.

The accommodation hole 3 is formed in the shape of a cylinder. Specifically, the receiving hole 3 is a small diameter smaller than the diameter of the large diameter hole 16 after the large diameter hole 16 as a large diameter accommodation part formed in the upper end side, and downward from this large diameter hole 16. It is comprised from the small diameter hole 17 as a accommodation part. The edge part 25 is formed in the boundary part of the large diameter hole 16 and the small diameter hole 17. As shown in FIG.

Like the container 4, the electrode retainer 7 is formed in a block shape by an insulating material. The electrode holding member 7 is fixed to the container 4 by fixing members such as screws.

In the present embodiment, each tip portion 9A of the plurality of conductive wires 9 constituting the wiring portion 8 serves as the electrode 6. Specifically, as shown in FIG. 3, the tip portion 9A of the conductive wire 9 is fixed to the electrode retainer 7 by a portion, and the portion fixed to the electrode retainer 7 is fixed to the electrode 6. It is. The electrode 6 is held by the electrode holding member 7 so that the center position in the radial direction of the receiving hole 3 and the center position in the radial direction of the electrode 6 approximately coincide with each other. The jig side edge part 5 of one contactor 2 respond | corresponds to one electrode 6, and is contacting.

The conductive wire 9 is, for example, an enamel wire having an insulating coating (not shown) serving as an insulating layer around the copper wire. The predetermined plating layer is formed in the tip of this conducting wire 9 (the lower end surface of the electrode 6 in FIG. 3, ie, the contact surface with the jig side edge part 5 of the contactor 2).

 (Composition of electrical contactor)

Next, the detailed structure of the contactor 2 is demonstrated, referring FIG. 4, FIG. 5, FIG. 4 is a front view of the contactor 2 shown in FIG. 3 seen from the front. FIG. 5 is a plan view of the contactor 2 shown in FIG. 4 seen from above. FIG. FIG. 6 is a bottom view of the contact 2 shown in FIG. 4 seen from below. FIG. 7 is an enlarged cross-sectional view showing a state before arranging the contactor 2 in the receiving hole 3 of the container 4 and before placing the electrode retainer 7 in the container 4.

As shown in FIG. 4, the contactor 2 has a jig side end portion 5, a main body portion 12, an inspection side end portion 10, and the like. As for the contactor 2, the jig | tool side edge part 5 is arrange | positioned on one side (upward in FIG. 4) with the main-body part 12 in between, and the other side (in FIG. 4) of the main-body part 12 is shown. The inspection side end part 10 is arrange | positioned below. In addition, the contactor 2 winds one wire 13 in a spiral shape around the crimp L, and the jig side end 5, the main body 12, and the inspection side end 10 have one wire. It is comprised integrally by (13). As the wire 13, for example, a conductive wire such as a nickel alloy is used, so that the contactor 2 is electrically connected from the inspection side end 10 to the jig side end 5.

The jig | tool side edge part 5 is wound so that a diameter may become small toward the tip part 14 (upper) from the main-body part 12 side, and is comprised as the diameter reduction part 18. As shown in FIG. In this embodiment, the diameter reduction part 18 has the structure by which the wire rod 13 was wound over about one half. And as for the wire rod 13 which forms the tip part 14, the pitch angle of the winding is set to 0 degree substantially so that the tip part 14 may be flat. In addition, as shown in Fig. 5, the tip portion 19 of the wire rod 13 wound on the tip portion 14 is bent on the crimp L side from the circular arc portion on which the wire rod 13 is wound and crimped. It is formed as if passing through (L). In addition, the wire-reduction unit 18 is wound around the wire 13 at intervals. Therefore, the crimp shaft small part 18 has the property and the state of a compression spring, and is elastically deformable in the direction (up-down direction) along the axial direction of the crimp L. As shown in FIG.

The main body part 12 has the close winding part 21 and the spring winding part 22 as a spring part. In the tight winding portion 21, the wire rod 13 is in close contact and wound. In the spring winding part 22, the wire 13 is wound at intervals. Therefore, the spring winding part 22 has the quality and state of a compression spring, and can deform | transform, having elasticity in the up-down direction according to the crimp L. As shown in FIG. On the other hand, the tight winding portion 21 is difficult to change in the stretching direction because the wire rods 13 are in close contact with each other, and also has a rigidity in the direction orthogonal to the crimp L, which is difficult to deform. It is. The main body 12 has the same diameter as that of the close winding portion 21 and the spring winding portion 22 except for the large diameter portion 23 provided at the upper end of the spring winding portion 22. The large diameter part 23 is formed in about one volume, and is formed in larger diameter than other parts of the main-body part 12. As shown in FIG.

The test | inspection side edge part 10 is wound up from the main body part 12 toward the tip part 15 (lower side) so that a diameter may become small, and is comprised as a diameter reduction part 24. As shown in FIG. In this embodiment, the diameter reduction part 24 is a structure by which the wire rod 13 was wound over about 4 turns. In addition, in the wire rod 13 forming the tip portion 15, the pitch angle of the winding is approximately 0 degrees so that the tip portion 15 is flat. Moreover, as shown in FIG. 6, the tip part 26 of the wire rod 13 wound by the tip part 15 is bent to the crimp L side from the circular arc part to which the wire rod 13 is wound, and crimped L It is formed like passing through). In addition, the wire-reduction portion 24 is wound around the wire 13 at intervals. Therefore, the diameter reduction part 24 has the property and the state of a compression spring, and is comprised so that it can deform | transform elastically in an up-down direction.

As described above, the contactor 2 has, for example, a diameter of the wire rod 13 of the tip portion 15 of the inspection side end 10 from the tip portion 14 of the jig side end 5. The length N1 is composed of about 4,8 mm. In this case, the dimension of each part of the contactor 2 is set as shown, for example in FIG. That is, the length N2 of the tight winding part 21 is 1. 8 mm, the length N3 of the spring winding part 22 including the large diameter part 23 is 2. 4 mm, and the length N4 of the diameter reducing part 18. 0. 26 mm, and the length N5 of the diameter reduction part 24 is 0.34 mm. In addition, the main body part 12 is formed with, for example, a diameter R1 of the large diameter portion 23 of 0.4 mm and a diameter R2 of a portion other than the large diameter portion 23 of 0.34 mm. . And the diameter R3 of the tip part 14,15 of the diameter reduction part 18 and 24 is formed in 0.2 mm, for example.

The contactor 2 comprised as mentioned above is arrange | positioned inside the accommodating hole 3, as shown in FIG. With respect to the contactor 2 whose dimensions are set as described above, the dimensions of each part of the receiving hole 3 are set, for example, as shown in FIG. 7. That is, the inner diameter M1 of the small-diameter yoke 17 of the accommodation hole 3 is set slightly larger than the diameter R2 of the main body part 12 of the contactor 2, for example, diameter R2 = 0. For the main body part 12 of 34 mm, the small diameter hole 17 has an inner diameter M1 = 0. It is set to 35 mm. Moreover, the inner diameter M2 of the large diameter hole 16 formed in the upper part of the accommodating hole 3 is set equal to the diameter R1 of the large diameter part 23 of the contactor 2, for example, as mentioned above. Diameter R1 = 0. For the large diameter portion 23 of 4 mm, the large diameter hole 16 has an inner diameter M2 = 0. It is set to 4 mm. Moreover, the thickness H of the container 4 is set to 4 mm. Therefore, the length of the accommodating hole 3 is also set to 4 mm. And the up-down length T1 of the large diameter hole 16 of the accommodating hole 3 is set to 0.16 mm, and the up-down length T2 of the small diameter hole 17 is set to 3.84 mm, respectively. have.

The contactor 2 inserts the test | inspection side edge part 10 into the accommodating hole 3 from the large diameter hole 16 side toward the insertion direction. As shown in FIG. 7, the large diameter part 23 is inserted until it contacts the edge part 25. As shown in FIG. The inspection side end portion 10 and the main body portion 12 are set to a diameter slightly smaller than the small diameter hole 17. Therefore, the test | inspection end 10 and the main-body part 12 can be inserted smoothly in the small diameter hole 17. FIG. And the large diameter part 23 abuts on the edge part 25, and the contactor 2 advances positioning of the up-down direction. In addition, the diameter R1 of the large diameter part 23 and the internal diameter M2 of the large diameter hole 16 are the same. Therefore, when inserting the large diameter part 23 into the large diameter hole 16, the force which pushes the large diameter part 23 into the large diameter hole 16 is slightly applied, and the large diameter part 23 is inserted into the large diameter hole 16. FIG. It is press-fitted.

In the state where the large diameter portion 23 abuts on the end portion 25, a part of the tight winding portion 21 and the inspection side end portion 10 protrude downward from the lower surface of the container 4, and further, the jig side end portion ( A part of 5) protrudes upward from the upper surface of the container 4. Specifically, since the contactor 2 and the receiving hole 3 have the above-described dimensions, the protruding length t1 at which the contactor 2 protrudes from the lower surface of the container 4 becomes 0.7 mm. have. Moreover, the protruding length t2 which the jig | tool side edge part 5 protrudes from the upper surface of the accommodation body 4 is 0.1 mm.

After the contactor 2 is inserted into each receiving hole 3 as shown in FIG. 7, the electrode retainer 7 facing the electrode 6 is provided with respect to the receiver 4. The tip portion 14 of the jig side end portion 5 of the contactor 2 protrudes from the upper surface of the container 4. Therefore, when the electrode retainer 7 is mounted on the upper surface of the container 4, the jig-side end 5 of the contactor 2 is in contact with the electrode 6 in a biased state. The jig side edge part 5 is biased with respect to the electrode 6, and electrical contact with the electrode 6 can be made reliable.

 (Operation at the time of use of inspection jig (1))

Next, the operation | movement of the inspection jig 1 at the time of advancing the test of the circuit board P which is an inspection object using the inspection jig 1 is demonstrated, referring FIG. 8, FIG. 8 is an enlarged cross-sectional view of the inspection jig 1 and shows a state before the contactor 2 is brought into contact with the circuit board P. As shown in FIG. 9 is an enlarged cross-sectional view of the inspection jig 1, and in FIG. 9, the state after the contactor 2 is brought into contact with the circuit board P is illustrated.

First, as shown in FIG. 8, the inspection jig 1 so that each test | inspection side edge part 10 of the inspection jig 1 and the predetermined circuit electrode P1 which the test | inspection of the circuit board P advancing opposes in the up-down direction. ) And the relative position of the circuit board P. 8 and 9 show one inspection side end portion 10 and the predetermined circuit electrode P1 of the circuit board P for convenience of explanation. The inspection jig 1 is moved to the circuit board P side in the state where each test | inspection side edge part 10 and the predetermined circuit electrode P1 oppose in the up-down direction. Then, as shown in FIG. 9, each test | inspection side edge part 10 contacts the predetermined circuit electrode P1, and the spring winding part 22 of the contactor 2 reduces according to the movement amount of the test jig 1, The inspection side end portion 10 is in contact with the circuit electrode P1 in a biased state. At this time, the length of the adhesion winding part 21 in the up-down direction hardly changes. Each inspection side end portion 10 is in contact with a predetermined circuit electrode P1, so that the circuit electrode P1 and the electrode 6 of the circuit board P are electrically connected through the contactor 2 so that the circuit board ( Inspection of P) becomes possible.

 (Main effects of this embodiment)

As described above, the inspection jig 1 and the contactor 2 are configured to have the effects described below.

First, in the form which concerns on this embodiment, the contactor 2 is comprised by the one wire 13. That is, the contactor 2 is comprised from one member. Therefore, since the configuration is extremely simple and is a single member, there is no problem of poor contact between components. The contactor 2 is a member of several millimeters in total length. Therefore, if the contactor 2 is comprised from a plurality of members, extremely fine work is required when assembling. However, by forming the contactor 2 from one member as in the present embodiment, the assembling work of the contactor 2 becomes unnecessary, and the number of assembly steps can be reduced. In addition, the parts score is reduced, making it possible to reduce the parts cost. In addition, almost all of the contactors 2 are wound around the wire 13 in a spiral shape. Therefore, compared with the case where the wire rod 13 is comprised in a line shape, it can be set as the structure which has rigidity and elasticity. For example, as described above, the wire rod 13 is about 0.05 mm in diameter, and when the entire contactor 2 is configured in a line shape, plastic deformation is easy. On the other hand, the wire 13 is wound in a spiral shape, and the contactor 2 can be made elastically deformable while having rigidity.

Moreover, the contactor 2 is arrange | positioned at the one end side of the contact direction 2 in the longitudinal direction, and is arrange | positioned at the other end side with respect to the test | inspection side edge part 10 which contacts the circuit board P, and this test | inspection side end 10. The main body part which has the part accommodated in the accommodation hole 3 which connects the jig side edge part 5 which contact | connects the electrode 6 of the inspection jig 1, the test | inspection side edge part 10, and the jig side edge part 5, and is accommodated in the accommodation hole 3. Has 12. And this main body part 12 has the spring winding part 22 as a spring part wound so that the wire rod 13 may spiral and have the nature and state of a compression spring.

The contactor 2 configured as described above has an inspection side end when the spring winding portion 22 has elasticity and can stretch and contract, and when the inspection side end portion 10 contacts the circuit electrode P1 of the circuit board P. The portion 10 can be brought into contact with the circuit electrode P1 in a biased state. For this reason, the electrical contact of the test | inspection side edge part 10 and the circuit electrode P1 can be made reliable.

Moreover, since the test | inspection side edge part 10 is wound so that the wire rod 13 may have the property and the state of a compression spring, the contactor 2 has elasticity in the direction along the crimp L. As shown in FIG. For this reason, the inspection side end part 10 can be bent in the left-right front-rear direction with respect to the crimp L, as shown in FIG. As a result, the tip 15 can be inclined contact with the circuit electrode P1.

The resist P2 is deposited around the circuit electrode P1, and the circuit electrode P1 is disposed inside the recessed portion P3 of the register P2. For this reason, for example, when the tip uses the pin-shaped contactor S, when the tip of the contactor S deflects slightly from the circuit electrode P1 and contacts the surface of the resist P2, The contactor S cannot be brought into contact with the circuit electrode P1.

On the other hand, since the test | inspection side edge part 10 is wound in the spring form, it can bend to the left-right front-back direction with respect to the crimp L. As shown in FIG. Moreover, the tip part 15 of the inspection side edge part 10 is flat. Therefore, even when the tip part 15 of the test | inspection side edge part 10 contacts the edge P4 of the recessed part P3 side of the resist P2, the test | inspection side edge part 10 bends, The tip portion 15 protruding from the edge portion P4 toward the circuit electrode P1 side is inclined in the direction of contact with the circuit electrode P1, and the tip portion 15 can be brought into contact with the circuit electrode P1. . That is, in the case of inspection, it is ideal to align the relative position between the inspection jig 1 and the circuit board P so that the crimp L is located at the center of the circuit electrode P1 (the recess P3). Even if this positional alignment is different and the tip portion 15 is in contact with the edge P4, the tip portion 15 of the contactor 2 and the circuit electrode P1 can be reliably moved.

In addition, since the wire rod 13 is wound around a spring shape, the jig side end portion 5 has elasticity in the direction along the crimp L. As shown in FIG. For this reason, the jig | tool side edge part 5 can also bend to the left-right front-back direction with respect to the crimp L. As shown in FIG. As a result, there is an end portion between the electrode 6 and the electrode retainer 7, and the tip portion 14 of the contactor 2 and the electrode are used even when the tip portion 14 abuts on the end portion. The contact with (6) can be surely performed.

As described above, the contactor 2 can elastically expand and contract with the spring winding portion 22. Therefore, when the inspection jig 1 is moved to the circuit board P side with the inspection side end 10 abutting on the circuit electrode P1 of the circuit board P, the spring winding 22 is reduced. The inspection side end 10 moves upward and enters the small diameter hole 17 as shown in FIG. 9. In the present embodiment, the wire rod 13 is wound at the contact side 2 at the inspection side end portion 10 so as to decrease the diameter of the coil toward the tip. Therefore, the inspection side end portion 10 is caught by the opening edge portion 17A of the small-diameter hole 17 and the movement of the inspection side end portion 10 above is prevented from being prevented. For example, as shown in FIG. 10 mentioned above, the tip part 15 of the test | inspection side edge part 10 contacts the edge P4 of the recessed part P3 side of the resist P2, and the test | inspection side end part 10 ) May move upward in the state of being squeezed in the left and right front and rear directions. Even in this case, the wire rod 13 is wound so that the diameter of the inspection side end portion 10 is reduced toward the tip, and the inspection side end portion 10 is caught by the opening edge portion 17A of the small diameter hole 17. Can be prevented.

When attaching the electrode retainer 7 to the container 4, the jig-side end portion 5 protruding from an upper surface of the container 4 is compressed and accommodated in the large diameter hole 16. Therefore, when the jig | tool side edge part 5 is caught by the opening edge part 16A of the large diameter hole 16, the jig | edge side edge part 5 of the jig | edge part 5 will be joined to the butt | matching part of the electrode holding body 7 and the acceptor 4. As shown in FIG. A part is pinched and there exists a possibility that the connection of the jig side edge part 5 and the electrode 6 may become bad. However, as for the contactor 2, the wire rod 13 is wound so that the jig | tool side edge part 5 may become small in diameter toward a tip. Therefore, when attaching the electrode retainer 7 to the receiver 4, the jig side end portion 5 can be prevented from being caught by the opening edge portion 16A of the large diameter hole 16.

Moreover, the close-up winding part 21 is formed in the main body part 12 of the contactor 2 between the spring winding part 22 and the test | inspection side edge part 10. As shown in FIG. When the spring winding part 22 expands and contracts and the contactor 2 moves up and down inside the small diameter hole 17, the close winding part 21 is guided to the inner peripheral surface of the small diameter hole 17. As shown in FIG. Since the wire windings 13 are in close contact with each other, the tight winding portion 21 is difficult to change in the reduction direction, and also has a rigidity that is difficult to deform in a direction perpendicular to the crimp L. As shown in FIG. Therefore, the tight winding part 21 is reliably guided with respect to the inner peripheral surface of the small diameter hole 17, and can suppress the shaking of the inspection side edge part 10 in the left-right front-back direction. Therefore, for example, it is possible to prevent a poor contact with the circuit electrode P1 due to the shaking of the inspection side end 10 in the left and right directions.

In addition, the contactor 2 is guided more stably with respect to the small diameter hole 17 by taking the length of the close-up winding part 21 longer, but when the close-up winding part 21 is lengthened, the length of the spring winding part 22 is lengthened. Becomes shorter. When the length of the spring winding part 22 becomes short, when the spring winding part 22 expands and contracts, the amount of expansion (displacement amount) per unit length of the spring winding part 22 increases, and the spring winding part 22 deteriorates (elasticity). Decrease) progresses quickly. Therefore, from the stable surface of the guide by the small diameter hole 17 of the contactor 2, and the heat screen of the spring winding part 22, it is necessary to set the length of the close winding part 21 and the spring winding part 22 suitably. For example, in the contactor 2 in the inspection jig 1 of this embodiment, the length of the close-up winding part 21 with respect to the displacement amount of the up-down direction of the tip part 15 of the inspection side edge part 10 is carried out. Is approximately four times, and the length of the spring winding 22 is approximately six times, whereby the contactor 2 is guided to the receiving hole 3 more stably and guides the deterioration of the spring winding 22. It can be suppressed favorably. Moreover, by having the length of this contact | adherence winding part 21 in this way, when advancing the operation | work etc. which insert the contactor 2 into the accommodation hole 3, the contact winding part 21 can be caught with a tweezers, and the contactor 2 ) Can be easily handled.

Moreover, the contact part 2 is formed in the upper part of the spring winding part 22 of the main-body part 12 with the large diameter part 23 in which the diameter was set so that it could press-fit in the large diameter hole 16 of the accommodation hole 3, and have. Therefore, even when the surface on which the electrode retainer 7 of the acceptor 4 is mounted is directed downward in the state where the electrode retainer 7 is detached from the acceptor 4, from the receiving hole 3, The contactor 2 is not missed.

The inspection jig 1 may be disposed below the circuit board P so that the contactor 2 can be brought into contact with the circuit electrode P1 disposed on the bottom surface of the circuit board P. FIG. In this case, the inspection side end portion 10 is located above and the jig side end portion 5 is located below. Therefore, by removing the electrode retainer 7 from the container 4, the contactor 2 can be pulled out downward, but the large diameter portion 23 is pressed into the large diameter hole 16, thereby making contact. The ruler 2 can be prevented from being missed from the receiving hole 3 by mistake.

The tip portion 19 of the jig side end portion 5 of the contactor 2 and the tip portion 26 of the inspection side end portion 10 are formed so as to pass through the crimp L. As shown in FIG. Therefore, even if the contactor 2 rotates around the crimp L, the tip part 19 and the tip part 26 are arrange | positioned on the crimp L. As shown in FIG. That is, when the contactor 2 is accommodated in the accommodation hole 3, even if the contactor 2 is arrange | positioned with respect to the circumference | surroundings of the crimp L, the tip part 19 and the tip part 26 are crimped L It is arranged as if passing through the phase. Therefore, the contact between the contactor 2, the electrode 6, and the circuit electrode P1 can be confirmed.

 (2nd embodiment of contactor)

The contactor can be configured as the contactor 30 shown in FIGS. 11 and 12. 11 is an enlarged cross-sectional view of the inspection jig 1, and a front view of the contactor 30 is shown. 12 is a bottom view which looked at the contactor 30 shown in FIG. In FIG. 11 and FIG. 12, the same code | symbol is attached | subjected about the component same as that of 1st Embodiment mentioned above, and the description is abbreviate | omitted.

As shown in FIG. 11 and FIG. 12, the columnar portion 31 is provided on the tip portion 15 of the inspection side end portion 10 of the contactor 30. This columnar part 31 can be formed by making the tip part 32 of the wire rod 13 wound around the tip part 15 along the crimp L toward the downward direction. By providing the columnar part 31 in the tip part 15, the contact between the contactor 30 and the circuit electrode P1 of the circuit board P can be made more reliable.

Moreover, you may provide the columnar part like the tip part 15 in the tip part 14 of the jig side edge part 5 of the contactor 30. As shown in FIG. By providing the columnar part in the tip part 14, the contact of the contactor 30 and the electrode 6 can be made more reliable.

 (Third embodiment of contactor)

The contactor can be configured as the contactor 40 shown in FIG. 13. 13 is an enlarged cross-sectional view of the inspection jig 1, and a front view of the contactor 40 is shown. In FIG. 13, the same code | symbol is attached | subjected about the same component part as 1st Embodiment mentioned above, and the description is abbreviate | omitted.

As shown in FIG. 13, the spherical part 41 is provided in the tip part 15 of the test | inspection side edge part 10 of the contactor 40. As shown in FIG. By providing the spherical part 41 in the tip part 15, the contact of the contact 40 and the circuit electrode P1 of the circuit board P can be made more reliable. The contact of the contactor 40 to the circuit electrode P1 is such that the test jig 1 and the circuit board are positioned so that the crimp L of the contactor 40 is located at the center of the circuit electrode P1 (the recessed part P3). It is preferable to proceed with the relative position with (P) aligned. However, when the alignment of the relative position between the inspection jig 1 and the circuit board P is not made, as shown in FIG. 14, the spherical part 41 may contact the resist P2. . Also in this case, when the bulbous part 41 contacts the edge P4 of the recess P3 side of the resist P2, as shown in FIG. 15, the bulbous part 41 will make the edge P4. It slips and enters the recessed part P3 and can come into contact with the circuit electrode P1. Thus, by providing the spherical part 41 in the tip part 15, the contact of the contactor 40 and the circuit electrode P1 of the circuit board P can be made more reliable.

Moreover, you may provide the spherical part like the tip part 15 in the tip part 14 of the jig side edge part 5 of the contactor 40. As shown in FIG. By forming a spherical portion in the tip portion 14, when there is an end portion between the electrode 6 and the electrode retainer 7, the spherical portion provided in the tip portion 14 is in contact with the end portion. Also, the contact between the contactor 40 and the electrode 6 can be surely performed.

The spherical part 41 provided in the tip part 15 of the test | inspection side edge part 10 can be formed as follows, for example. In formation of the spherical part 41, first, as shown in FIG. 16, the tip part 43 of the wire rod 13 wound around the tip part 15 is spread along the crimp L. As shown in FIG. Put it. And the tip part 43 is melt | dissolved by heating a laser beam to this spread tip part 43. FIG. If so, the molten portion becomes spherical by surface tension, and the spherical portion 41 is formed by cooling the spherical molten portion.

In addition to the laser irradiation, the heating can be performed by using a burner or a heated iron. Moreover, also about the spherical part provided in the tip part 14 of the jig side edge part 5, the tip part of the wire rod 13 wound around the tip part 14 is made to speak along the crimp L, It can form by the method similar to the bulbous part 41 mentioned above.

 (Fourth embodiment of contact)

In addition, the contactor can be configured as the contactor 50 shown in FIG. 17. 17 is an enlarged cross-sectional view of the inspection jig 1, and a front view of the contactor 50 is shown. In FIG. 17, the same code | symbol is attached | subjected about the structural part similar to 1st Embodiment mentioned above, and the description is abbreviate | omitted. As shown in FIG. 17, the contactor 50 has the tip portion on the circuit board P side of the wire rod 13 forming the contactor 50 from the tip side of the contactor 50 to the main body 12 side. The half 51 which is bent in a hook shape is configured as the inspection side end portion. The half part 51 has the side parts 52 and 53 arrange | positioned across the crimp L, and the arc part 54 which connects the side part 52 and the side part 53, etc. are shown.

The arc part 54 contacts the circuit electrode P1. By forming the tip portion of the half portion 51 with the arc portion 54, the contact between the contactor 50 and the circuit electrode P1 of the circuit board P can be made more reliable. The contact of the contactor 50 to the circuit electrode P1 is such that the test jig 1 and the circuit board (1) are positioned so that the crimp L of the contactor 50 is located at the center of the circuit electrode P1 (the recess P3). It is preferable to proceed with the relative position with P) aligned. However, when the alignment of the relative position between the test jig 1 and the circuit board P is not made, as shown in FIG. 18, the arc part 54 may contact the resist P2. Even in such a case, when the arc portion 54 abuts the edge P4 on the recess P3 side of the resist P2, the arc portion 54 pushes the edge P4 as shown in FIG. It enters in the recessed part P3, and can contact the circuit electrode P1. Thus, by providing the arc part 54 in the half part 51, the contact of the contact 50 and the circuit electrode P1 of the circuit board P can be made more reliable.

In addition, the maximum width W1 (see FIG. 17) in the direction between the side portions 52 and the crimp L of the side portion 53 is the inner diameter M1 of the small diameter hole 17 (see FIG. 7). It is set narrower than. When the inspection jig 1 is moved to the circuit board P side in the state in which the half halves 51 are in contact with the circuit electrode P1, the spring winding part 22 is compressed and the half part 51 is moved upward. Displace. As mentioned above, since the maximum width W1 of the direction which sandwiched the crimp L of the side part 52 and the side part 53 is set narrower than the inner diameter M1 of the small diameter hole 17, it is a half part. (51) can fit inside the water tool yoke (3). Therefore, the displacement to the upper part of the half 51 is not disturbed.

Moreover, as shown in FIG. 17, the contactor 50 has the tip part of the electrode 6 side of the wire rod 13 which forms the contactor 50 from the tip part side of the contactor 50 from the main-body part 12 side. The half portion 55 which is bent in a hook shape is configured as a jig side end portion. The half portion 55 has side portions 56 and 57 arranged with the crimp L interposed therebetween, an arc portion 58 connecting the side portion 56 and the side portion 57, and the tip of the side portion 57. It has a bent part 59 formed in the same.

The arc portion 58 is in contact with the electrode 6. By forming the tip portion of the half portion 55 with the arc portion 58, the contact between the contactor 50 and the electrode 6 can be made more reliable. That is, for example, even when there is an end portion between the electrode 6 and the electrode retainer 7, and the arc portion 58 of the half portion 55 abuts the end portion, The contact with the electrode 6 can surely proceed.

The maximum width W2 from the crimp L of the side portion 57 is the inner diameter M2 of the large diameter hole 16 in the state before placing the half portion 55 in the large diameter hole 16 (FIG. 7). Is set equal to or slightly wider than 1/2). Therefore, when inserting the half part 50 into the large diameter hole 16, the force which pushes the half part 55 into the large diameter hole 16 is slightly applied, and the half part 55 is pressed into the large diameter hole. . Therefore, even when the surface on which the electrode retainer 7 of the acceptor 4 is mounted is directed downward in the state where the electrode retainer 7 is detached from the acceptor 4, from the receiving hole 3, The contact 50 is not missed.

Moreover, in the state in which the bent part 59 abuts on the edge part 25, one part and the half part 51 of the close-up winding part 21 of the main-body part 12 protrude downward from the lower surface of the container 4. In addition, so that a part of the arc portion 58 of the half portion 55 protrudes upward from the upper surface of the container 4, the length of the half portion 51, the half portion 55, and the like in the vertical direction is increased. It is set. One part of the arc part 58 protrudes upward from the upper surface of the container 4, and when the electrode holding body 7 is attached to the container 4, the arc part 58 contacts with the electrode 6 can do.

In the state where the half part 55 is accommodated in the large diameter hole 16, the bending part 59 is located so that the tip part 60 of the bending part 59 may be located in the crimp L side rather than the edge part 25. It is bent at the crimp (L) side. Therefore, when the contactor 50 is pulled to the half 51 side, the inclined surface 61 of the bent portion 59 can cross the end 25, and the contactor 50 is moved from the small-diameter hole 17 side. I can take it out.

Moreover, the side part 57 can elastically displace in the direction orthogonal to the crimp L by the spring property which the wire rod 13 has, and the space | interval D between the side part 56 and the side part 57 ) Can be changed. Therefore, as shown in FIG. 20, the contactor 50 can be inserted in the small diameter hole 17 from the half part 55 side. That is, when the half part 55 is inserted in the small diameter hole 17, the side part 57 will displace to the crimp L side, and the space | interval D between the side part 56 and the side part 57 will become narrow. Lose. Therefore, the contactor 50 can be inserted from the small diameter hole 17 side. And when the half part 55 reaches the large diameter hole 16 through the small diameter hole 17, the space | interval D between the side part 56 and the side part 57 will expand, and the bending part 59 Is brought into contact with the end portion 25, and the positioning of the contactor 50 in the vertical direction proceeds.

In this way, the contactor 50 can be taken out or inserted from the small-diameter hole 17 side. Therefore, the electrode holding member 7 can be removed and installed in the receiving hole 3 of the contactor 50 without being removed from the container 4.

It is preferable that the above-mentioned contactors 2, 30, 40 and 50 are subjected to gold plating. By gold plating, the electrical resistance of the contacts 2, 30, 40 and 50 can be reduced. Moreover, by performing gold plating, the wire rods 13 which contact each other in the tight winding portions 21 of the contacts 2, 30, 40 and 50 are fixed to each other by gold plating to close the tight winding portions 21. It can be difficult to deform. Therefore, the guide by the inner main surface of the accommodating hole 3 (small diameter hole 17) of the close winding part 21 advances more reliably, and the shaking to the left and right of the inspection side edge part 10 can be suppressed. Therefore, for example, poor contact with the circuit electrode P1 caused by the inspection side end portion 10 shaking back and forth can be prevented.

One… Inspection jig
2,30,40,50... Electrical contactor
3 ... Receiving hole
4… Receptor
5... Jig-side end
10... Inspection side end
12... Main body
13... Wire rod
16... Large diameter hole (large diameter receiving part)
17... Small Diameter Hole (Small Diameter Receptacle)
21 ... A close contact
22... Spring winding (spring part)
23 ... The great neck
25... End
31... Columnar
41... Bulb
51 ... Half
P… Circuit Board (Inspection Object)

Claims (11)

An electrical contactor used for an inspection jig for inspecting electrical characteristics of an inspection object, and disposed inside a receiving hole of the inspection jig,
The electrical contact is constructed from wire and at the same time,
An inspection side end portion disposed on one end side of the electrical contact in the longitudinal direction and in contact with the inspection object;
A jig side end portion disposed at the other end side with respect to the one end side and in contact with the contact point of the inspection jig;
A main body portion connected to the inspection side end portion and the jig side end portion and accommodated in the accommodation hole;
And the main body portion has a spring portion wound so that the wire rod has a spring property in a spiral shape. In the electrical contact of claim 1,
At least one of the electrical inspection side end part or the electric jig side end part is an electrical contact member wound up and comprised in the spring shape, The electrical contactor characterized by the above-mentioned. In the electrical contact of claim 2,
At least one of the electric inspection side end part or the electric jig side end part is an electric contact wire wound up so that a diameter may become small toward a tip. In the electrical contact of any one of Claims 2 or 3,
The at least one tip of an electrical inspection side edge part or an electrical jig side edge part is provided with the columnar part extended along the crimp of the wire wound by the electric wire, The electrical contactor characterized by the above-mentioned. In the electrical contact of any one of Claims 2 or 3,
The spherical part is provided in at least one tip part of an electrical inspection side edge part or an electrical jig side edge part, The electrical contactor characterized by the above-mentioned. In the electrical contact of claim 1,
At least one of the electric inspection side end part or the electric jig side end part is formed by the half part which bends back to the electric main-body part side from the end side of an electric contactor, The electric contactor characterized by the above-mentioned. In the electrical contact of claim 1,
An electrical contactor having, in the electric body portion, a close winding portion wound between the electric spring portion and the electrical inspection side end portion as if the electric wires are in close contact with each other. In the electrical contact of claim 1,
A part of the electric spring part of the electric main body part has a large diameter part having a larger diameter than the diameter of another part of the electric spring part so as to be press-fitted into the electric receiving hole. In the electrical contact of any one of claims 1 to 3 or 6 to 8,
The electrical contactor is an electrical contactor, which is coated with a gold plating. In the inspection jig for contacting the test object with the electrical contactor to test the electrical properties of the test object,
A receptor having a receiving hole for receiving the electrical contact;
Said electrical contactor is an electrical contact of any one of 3 to 6, or 9 to 9, The inspection jig characterized by the above-mentioned. In the inspection jig for contacting the test object with the electrical contactor to test the electrical properties of the test object,
A receptor having a receiving hole for receiving the electrical contact;
The said electrical contactor is an electrical contact of Claim 8,
The said accommodating hole has a small diameter accommodating part which accommodates the large diameter accommodating part which accommodates the large diameter part of the said electrical contactor, and the small diameter part which is a part other than the electric large diameter part of an electric spring part, and the electric large diameter is provided in the boundary part of a large diameter accommodating part and a small diameter accommodating part. An inspection jig, wherein an end portion to which the additional portion abuts is formed.

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