JP2010091358A - Socket for inspection - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a socket for inspection facilitates processing sand enables reduction in the time required for the processing and cost. <P>SOLUTION: The inspection socket includes: a socket body 10 having a through-hole 11 formed therein; a first conductive member 3, disposed on an opening 11a side and brought into contact with a connection terminal of an inspection object; a second conductive member 4, disposed on an opening 11b side and brought into contact with a connection terminal of an inspection device; a third conductive member 5 housed in the through-hole 11, slidably holding the first conductive member 3 which is connected to one end thereof, and slidably-holding the second conductive member 4 connected to the other end thereof; a flange part 5a, formed at a predetermined position in the axial direction of the third conductive member 5 and having a diameter that increases outward, in a radial direction of the third conductive member 5; a hollow first compression spring 6, formed in contact with the first conductive member 3 and the flange part 5a and surrounding the third conductive member 5, in between the first conductive member and the flange part 5a; and a hollow second compression spring 7 formed in contact with the second conductive member 4 and the flange part and surrounding the third conductive member 5 in between the second conductive member and the flange part. <P>COPYRIGHT: (C)2010,JPO&amp;INPIT

Description

  The present invention relates to an inspection socket, and more particularly to an inspection socket for inspecting an IC package, an integrated circuit element, and the like.

  A plurality of contact probes are provided between a connection terminal of an IC package or an integrated circuit element to be tested and a connection terminal of a test circuit board which is an inspection device as an IC package or an integrated circuit element inspection. An inspection socket is known, and a contact probe provided in the inspection socket is provided with a compression member between the contact portions at both ends to allow application of a required contact pressure and absorption of variations in contact position. There are two types of displacement (sliding) type.

  Conventional inspection sockets equipped with this type of both-end-displacement contact probe are arranged on the body portion having a plurality of through-holes and on the opening side of one end of each through-hole, and are used as terminals of the object to be inspected. A plurality of first plungers as electrical contact portions to be in contact; a plurality of second plungers as electrical contact portions arranged on the opening side of the other end of each through hole; a first plunger and a second plunger; In contrast, one compression spring that can be urged in a direction to be separated from each other, and a third plunger housed in the compression spring, and compresses an intermediate portion (large diameter portion) of the third plunger. What is held by an intermediate part of a spring is known (for example, refer to FIG. 1 of Patent Document 1).

In this case, since the compression spring has a spiral shape, the intermediate portion of the third plunger is cut into a spiral shape, and the intermediate portion of the third plunger is held by the intermediate portion of the compression spring.
JP 2006-84212 A

  However, in such a conventional inspection socket, there is a problem that it is not easy to cut the intermediate portion of the third plunger in a spiral shape.

  The present invention has been made to solve the conventional problems, and an object of the present invention is to provide an inspection socket that can be easily processed.

  (1) The inspection socket according to the present invention is disposed on the socket side where at least one or more through-holes are formed, and on the opening side of one end of the through-hole, and contacts the connection terminal of the object to be inspected. A first conductive member that constitutes the electrical contact portion, and a second conductive member that is disposed on the opening side of the other end of the through-hole and constitutes an electrical contact portion for contacting the connection terminal of the inspection device; A third conductive member housed in the through hole of the socket body, wherein the first conductive member is slidably held and coupled at one end, and the second conductive member is slidably held and coupled at the other end And an enlarged diameter portion formed at a predetermined location in the axial direction of the third conductive member and expanded radially outward of the conductive member, and both in contact with the first conductive member and the enlarged diameter portion. Between the first conductive member and the third conductive member. When the member and the enlarged diameter portion come closer than a predetermined interval in the axial direction, the hollow first elastic member that urges both in the direction of enlarging the interval, the second conductive member, and the enlarged diameter portion are in contact with each other. The third conductive member is provided so as to surround the third conductive member, and when the second conductive member and the enlarged-diameter portion are closer than a predetermined interval in the axial direction, both are biased in the direction of expanding the interval. And a hollow second elastic member.

  With this configuration, since the first elastic member and the second elastic member are in contact with the enlarged diameter portion, the groove processing for fixing the first elastic member and the second elastic member to the enlarged diameter portion is not necessary. Therefore, the processing of the inspection socket is facilitated, and the time and cost for processing can be reduced.

  Further, since the first elastic member and the second elastic member are not fixed to the enlarged diameter portion, the first conductive member, the second conductive member, the third conductive member, the first elastic member, and the second elastic member are inserted into the through hole of the socket body. By dropping each member, the inspection socket can be easily assembled. In addition, when replacing parts, each member can be replaced individually. Therefore, the replacement cost can be reduced, and since the number of discarded parts is reduced, an effect as an environmental measure is expected.

  (2) The inspection socket according to the present invention has a configuration in (1) in which the specifications of the first elastic member and the second elastic member are different.

  With this configuration, specifications (for example, material, wire diameter, number of turns) of the first elastic member and the second elastic member can be selected, and the spring constant of the entire elastic member can be set with high accuracy. Moreover, the versatility of a socket apparatus can be improved by changing a spring load according to a to-be-inspected object.

  (3) The inspection socket according to the present invention is the inspection socket according to (1) or (2), wherein the socket body is provided separately from the body portion in which the through hole is formed, and the body portion. A socket cover having an opening with an opening area smaller than the inner peripheral area, and an engaging portion is formed by the socket cover portion between the opening and the through hole.

  With this configuration, it is possible to perform the assembly operation of the inspection socket and the replacement operation of the parts with the socket cover removed from the main body. Therefore, the workability of assembly and replacement work can be improved.

  As described above, the present invention can provide an inspection socket that can be easily processed.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

(First embodiment)
1 to 6 are views showing a first embodiment of an inspection socket according to the present invention.

  First, the configuration will be described. In FIG. 1, an inspection socket 1 includes a double-ended displacement contact probe (hereinafter also simply referred to as a probe) 2 and a socket body 10.

  The probe 2 has a first conductive member 3 and a second conductive member 4 that respectively constitute an electrical contact portion at both ends in the axial direction, and is housed in the through hole 11 of the socket body 10. Although not shown, through holes are formed in the socket body 10 at a predetermined pitch (a constant interval in the left-right direction in FIG. 1) in parallel with each other, and the probe 2 is accommodated in the through holes. ing.

  The first conductive member 3 is disposed on the opening 11a side (one end) above the through-hole 11 and comes into contact with the connection terminal 21a (see FIG. 4) of the object 21 to be inspected.

  The second conductive member 4 is disposed on the opening 11b side below (the other end of) the through-hole 11 and is in contact with the connection terminal 22a (see FIG. 4) of the printed wiring board 22 that is an inspection device. It has become.

  The third conductive member 5 is accommodated in the through hole 11 of the socket body 10, and the third conductive member 5 is slidably held and coupled to the upper end (one end) and the lower end ( The second conductive member 4 is slidably held and coupled to the other end.

  Further, a flange portion 5 a as a diameter-expanded portion is formed at the axially central portion of the third conductive member 5, and the flange portion 5 a is expanded in the radial direction outward of the third conductive member 5. .

  The upper side of the flange portion 5a of the third conductive member 5 constitutes a first end portion 5b, and the first conductive member 3 and the flange portion 5a are hollow so as to surround the first end portion 5b. A first compression spring 6 that is a first elastic member is provided.

  The lower side of the flange portion 5a of the third conductive member 5 constitutes a second end portion 5c, and the second conductive member 4 and the flange portion 5a are hollow so as to surround the second end portion 5c. A second compression spring 7 that is a second elastic member is provided.

  When the first conductive member 3 and the flange portion 5a are closer than a predetermined interval in the axial direction, the first compression spring 6 has the first conductive member 3 and the flange portion 5a in a direction in which the interval is increased (vertical direction in the figure). Is energized. When the second conductive member 4 and the flange portion 5a are closer than a predetermined interval in the axial direction, the second compression spring 7 is arranged in the direction in which the interval is increased (vertical direction in the figure), and the second conductive member 4 and the flange portion 5a. Is energized.

  That is, when the first conductive member 3 and the second conductive member 4 approach the predetermined interval in the axial direction, the first compression spring 6 and the second compression spring 7 increase the interval (the vertical direction in the figure). Both of the conductive members 3 and 4 are energized. Due to the biasing force of both compression springs 6 and 7, the contact portion 3 a that is the outer end portion of the first conductive member 3 protrudes outward from the opening portion 11 a of the socket body 10. Similarly, the contact portion 4 a that is the outer end portion of the second conductive member 4 protrudes outward from the opening portion 11 b of the socket body 10. Moreover, the contact part 4a is formed in the crown shape with which a triangular uneven | corrugated | grooved part continues.

  Each of the first conductive member 3 and the second conductive member 4 is formed to have a diameter larger than that of the contact portions 3a and 4a, and at the base end side of the contact portions 3a and 4a, the upper end surface of the first compression spring 6 and the second conductive member 4 are formed. 2 Flange portions 3f and 4f that contact the lower end surface of the compression spring 7, and project from the flange portions 3f and 4f toward the flange portion 5a and are inserted into the upper end of the first compression spring 6 and the lower end of the second compression spring 7. The insertion portions 3e and 4e and the bottomed or penetrating holes 3c and 4c extending inward in the radial direction of the insertion portions 3e and 4e.

  The contact portions 3 a and 4 a of the first conductive member 3 and the second conductive member 4 are conductive portions that protrude from the flange portions 3 f and 4 f to one side in the axial direction, respectively, and the openings 11 a and 11 b of the socket body 10. Thus, it is held so that it can be displaced (slidable) in the axial direction.

  Further, the opening areas of the openings 11 a and 11 b are formed smaller than the inner peripheral area of the through hole 11, so that an annular engaging part 11 d as an engaging part is formed between the openings 11 a and 11 b and the through hole 11. 11e, and the flange portion 3f of the first conductive member 3 and the flange portion 4f of the second conductive member 4 are engaged with the annular engagement portions 11d and 11e, so that the first conductive member 3 and the second conductive member 3 The conductive member 4 is prevented from coming out of the socket body 10.

  In addition, the division surface of the 1st socket main body 13 and the 2nd socket main body 14 is shown by P1, P2 in FIG.

  As shown in FIG. 2, the socket main body 10 includes a first socket main body 13 and a second socket main body 14 that are divided at the dividing surfaces P1 and P2.

  Further, the first socket body 13 is formed with a first through hole 11 f that constitutes one side of the through hole 11, and the second socket body 14 has a second penetration that constitutes the other side of the through hole 11. A hole 11g is formed.

  Further, as shown in FIG. 3, the flange portion 5 a is formed in a circular shape, and is inserted into the through hole 11 through a predetermined gap with the inner peripheral surface of the through hole 11. In addition, FIG. 3 is an AA direction arrow line view of FIG.2 (b).

  As shown in FIG. 4, the first conductive member 3 that frequently contacts and separates from the connection terminal 21 a of the object 21 to be inspected is a hard metal material having high conductivity and high wear resistance, for example, titanium (Ti) system. The second conductive member 4 made of metal and carbon steel (SK) and contacting the connection terminal 22a of the printed wiring board 22 is not required to be as hard as the first conductive member 3. For example, phosphor bronze, brass, beryllium copper It consists of copper-type metals such as. The first conductive member 3 and the second conductive member 4 can be easily turned by using a material having free-cutting properties.

  The first compression spring 6 and the second compression spring 7 can be formed of any cross-sectional shape and material (for example, piano wire for spring, stainless steel wire, or plastic). Compared to the conductive member 4, the member is not required to have conductivity.

  Further, when the first conductive member 3 and the second conductive member 4 approach the predetermined interval in the axial direction, the first compression spring 6 and the second compression spring 7 increase the interval (the vertical direction in the figure). It is a hollow elastic member that urges both. Here, the elastic member can be formed of not only a metal but also a viscoelastic material such as rubber, a plastic, or a composite product thereof.

  The first conductive member 3 and the second conductive member 4 are electrically connected by the third conductive member 5 housed in the first compression spring 6 and the second compression spring 7. The third conductive member 5 is made of a material having a higher conductivity than the first conductive member 3 or a material having a higher conductivity than the two conductive members 3 and 4, and is made of, for example, a copper-based metal such as oxygen-free copper or beryllium copper. Is formed.

  The upper end of the first end 5b of the third conductive member 5 is slidably inserted into the hole 3c of the first conductive member 3, and the second end 5c of the third conductive member 5 is 2 is slidably inserted into the hole 4 c of the conductive member 4.

  In the present embodiment, the flange portion 5a of the third conductive member 5 is integrally formed with the same material as the first end portion 5b and the second end portion 5c. It is also possible to form the first end portion 5b and the second end portion 5c from a different material.

  The first compression spring 6 and the second compression spring 7 are formed to have the same or larger inner diameters as the insertion portions 3e and 4e of the first conductive member 3 and the second conductive member 4, respectively. According to this configuration, when the insertion portions 3e and 4e of the first conductive member 3 and the second conductive member 4 are inserted into the upper end of the first compression spring 6 and the lower end of the second compression spring 7, respectively, the first compression spring 6 and the lower end of the second compression spring 7 come into contact with the flange portions 3f and 4f. Therefore, when assembling the socket body 10, the first conductive member 3, the second conductive member 4, the third conductive member 5, the first compression spring 6, and the second compression spring 7 can be individually mounted.

  In addition, not only in this embodiment, the inner diameter of the upper end of the first compression spring 6 and the lower end of the second compression spring 7 is smaller than the insertion portions 3e and 4e of the first conductive member 3 and the second conductive member 4, respectively. You may form so that it may become. According to this configuration, when the insertion portions 3e and 4e of the first conductive member 3 and the second conductive member 4 are inserted into the upper end of the first compression spring 6 and the lower end of the second compression spring 7, respectively, these insertion portions 3e. 4e is clamped and held at a predetermined radial pressure from the upper end of the first compression spring 6 and the lower end of the second compression spring 7.

  In the present embodiment, the first compression spring 6 and the second compression spring 7 have different specifications.

  This corresponds to the change of the inspection object 21, and the entire conductive member (the first conductive member 3 and the second conductive member 3) when contacting the connection terminal 21a of the inspection object 21 and the connection terminal 22a of the printed wiring board 22. This is for adjusting the contact pressure of the conductive member 4).

  In the present embodiment, the specifications of the first compression spring 6 and the second compression spring 7 are set such that the first conductive member 3 and the second conductive member 4 are the connection terminals 21a of the test object 21 and the connection terminals of the printed wiring board 22. The contact pressure is set so as to be optimum when contacting each of 22a.

  By making the first compression spring 6 and the second compression spring 7 into different specifications, the first conductive member 3 and the second conductive member 4 are connected to the connection terminal 21a of the inspection object 21 and the connection terminal 22a of the printed wiring board 22, respectively. It is possible to set an optimum contact pressure when contacting each other.

  Next, a method for assembling the inspection socket 1 of the present embodiment will be described with reference to FIG.

  First, as shown in FIG. 2A, the second conductive member 4 is inserted into the second through hole 11g of the second socket body 14 in the divided state, and then the second compression spring 7 is inserted. In this case, the insertion portion 4 e of the second conductive member 4 is in a state of being inserted into the lower end of the second compression spring 7.

  Next, after the second end 5c of the third conductive member 5 is inserted through the second compression spring 7, the second end 5c is inserted through the second through hole 11g, and the lower end of the second end 5c is connected to the second conductive portion. The hole 4c of the member 4 is inserted.

  Next, as shown in FIG. 2B, the first compression spring 6 with the upper end inserted in the insertion portion 3 e of the first conductive member 3 is inserted into the first end portion 5 b of the third conductive member 5. Next, the probe 2 is assembled to the socket body 10 by inserting the contact portion 3 a into the first through hole 11 f of the first socket body 13 and attaching the first socket body 13 to the second socket body 14. This is the state of FIG.

  Next, the operation will be described.

  In the inspection socket 1 of the present embodiment configured as described above, as shown in FIG. 4, the connection terminal 21 a of the inspection object 21 such as an IC package to be tested or an integrated circuit is formed. The contact part 3a of the first conductive member 3 comes into contact, and the contact part 4a of the second conductive member 4 comes into contact with the connection terminal 22a of the printed wiring board 22 constituting the inspection device or the diagnostic device. In addition, since the contact part 4a is formed in the crown shape, the contact part 4a stably comes into contact with the connection terminal 22a of the printed wiring board 22.

  Further, the first compression spring 6 and the second compression spring 7 having different specifications allow displacements S1 and S2 of the first conductive member 3 and the second conductive member 4 by the contact portions 3a and 4a, and the first compression. When the spring 6 and the second compression spring 7 are compressed to generate a spring load, a required contact pressure for electrical connection to the first conductive member 3 and the second conductive member 4 is applied.

  As described above, in the present embodiment, the third conductive member 5 is not held by one compression spring, but is held between the hollow first compression spring 6 and the second compression spring 7. Groove processing on the side peripheral surface 5s of the flange portion 5a of the member 5 is not necessary. Therefore, the process of the 3rd electrically-conductive member 5 becomes easy, and the time and cost concerning a process can be reduced. In addition, the said groove | channel is a helical fitting groove for clamp | tightening the flange part 5a with one compression spring.

  Further, since the first compression spring 6 and the second compression spring 7 are not fixed to the third conductive member 5, the first compression spring 6, the second compression spring 7, and the third conductive member 5 can be mounted individually. it can. Therefore, the assembly operation of the inspection socket 1 is facilitated.

  Furthermore, when each member is replaced, only the replacement object can be easily replaced. For example, it is possible to replace only a conductive member that has been soiled or worn due to contact with the object 21 to be inspected and whose electrical contact function has deteriorated. As a result, the replacement cost of the inspection socket 1 can be greatly reduced. Moreover, since the 1st conductive member 3, the 2nd conductive member 4, and the 3rd conductive member 5 can be replaced | exchanged separately, a waste part can be decreased and an environmental measure can be aimed at.

  Further, in the present embodiment, the first end portion 5b is surrounded between the first conductive member 3 and the flange portion 5a with the flange portion 5a formed in the axially central portion of the third conductive member 5 as a boundary. Thus, the first compression spring 6 is provided, and the second compression spring 7 is provided so as to surround the second end portion 5c between the second conductive member 4 and the flange portion 5a. The load on the inspection object 21 and the printed wiring board 22 can be adjusted by changing the specifications of the second compression spring 7 and the second compression spring 7.

  That is, by appropriately selecting the specifications (for example, material, wire diameter, number of turns) of the first compression spring 6 and the second compression spring 7 according to the object 21 to be inspected, the spring of the entire compression spring as an elastic member Constants can be set finely.

  Further, as shown in FIG. 5, the contact portion 4i may be formed in a conical shape. Even if it does in this way, while being able to process the contact part 4i easily, the front-end | tip of the contact part 4i can be made to contact the connection terminal 22a of the printed wiring board 22 reliably.

  Further, as shown in FIG. 6, the contact portion 4j may be formed in a curved surface shape. Even if it does in this way, while being able to process the contact part 4j easily, the front-end | tip of the contact part 4j can be made to contact the connection terminal 22a of the printed wiring board 22 reliably.

(Second Embodiment)
FIG. 7 is a diagram showing a second embodiment of the inspection socket according to the present invention. The same components as those in the first embodiment are denoted by the same reference numerals, and the description thereof is omitted.

  In FIG. 7, the first socket main body 13 is provided separately from the main body portion 32 in which the first through hole 11f is formed, and the main body portion 32, and has an opening area smaller than the inner peripheral area of the first through hole 11f. A socket cover 31 having an opening (one end of the through hole 11) 31a. The socket cover 31 is fastened to the main body 32 by a bolt (not shown).

  Further, an annular engaging portion 31d as an engaging portion is constituted by the socket cover 31 portion between the opening 31a of the socket cover 31 and the first through hole 11f, and the first conductive member is formed in the annular engaging portion 31d. As a result, the first conductive member 3 is prevented from coming out of the first socket body 13.

  Thus, in this Embodiment, the 1st socket main body 13 by which the 1st electrically-conductive member 3 is arrange | positioned is compared with the main-body part 32 in which the 1st through-hole 11f was formed, and the internal peripheral area of the 1st through-hole 11f. Since the socket cover 31 has the opening 31a having a small opening area, it is unnecessary to form the first through hole 11f and the opening 31a in one first socket body 13 in two steps.

  In order to open the first through hole 11f and the opening 31a in one first socket body 13, first, the opening 31a is opened by cutting, and then the opening 31a is positioned on the lower side. Two processes for opening the first through hole 11f from the dividing surface P1 side of the first socket body 13 are required.

  In the present embodiment, the main body portion 32 in which the first through hole 11f is formed and the socket cover 31 in which the opening portion 31a is formed are integrated by a bolt, so the opening portion 31a and the first through hole are integrated. 11f can be easily formed, and the first socket body 13 can be easily manufactured.

  Further, when replacing any of the first compression spring 6, the first conductive member 3, the third conductive member 5, the second compression spring 7, and the second conductive member 4, the bolts from the socket cover 31 and the main body portion 32 are used. Since the replacement work can be performed in a state in which the socket cover 31 is removed from the main body 32 after the detachment, the workability of the replacement work can be improved.

  In addition, the same effect is expected even if the socket cover 31 is provided on the second conductive member 4 side (lower side in the figure), not limited to the present embodiment.

(Third embodiment)
FIG. 8 is a diagram showing a third embodiment of the inspection socket according to the present invention. The same components as those of the first embodiment are denoted by the same reference numerals, and the description thereof is omitted.

  In FIG. 8, the socket body 10 is provided with a body portion 32 in which the through-hole 11 is formed, and an opening portion (through-hole 11 having a smaller opening area than the inner peripheral area of the through-hole 11). A socket cover 31 having a first end 31a. The socket cover 31 is fastened to the main body 32 by a bolt (not shown).

  Further, an annular engagement portion 31d as an engagement portion is configured by the socket cover 31 portion between the opening 31a of the socket cover 31 and the through hole 11, and the first conductive member 3 is formed in the annular engagement portion 31d. The first conductive member 3 is prevented from coming out of the socket body 10 by the engagement of the flange portion 3f.

  As described above, in the present embodiment, the socket body 10 in which the first conductive member 3, the second conductive member 4, and the third conductive member 5 are disposed is connected to the main body portion 32 in which the through hole 11 is formed, and the through hole. 11 has a socket cover 31 having an opening 31a having an opening area smaller than the inner peripheral area of the main body 32, a main body 32 having the through hole 11 and the opening 11b, and a socket having the opening 31a formed therein. The cover 31 can be integrated with a bolt. Therefore, the opening 31a can be easily formed, and the socket body 10 can be easily manufactured.

  In this case, in order to open the through hole 11 and the opening 11b in one socket body 10, first, the opening 11b is opened in the main body 32 by cutting, and then the opening 11b is positioned on the lower side. The through hole 11 is opened from the upper surface side of the main body portion 32. In this way, the main body part 32 in which the through hole 11 and the opening part 11b are formed and the socket cover 31 in which the opening part 31a is formed in a separate process are integrated by a bolt.

  Further, in the present embodiment, since the main body portion 32 is not divided, the assembling work of the main body portion 32 is facilitated as compared with the first and second embodiments. In the first and second embodiments, it is necessary to align the dividing surfaces P1 and P2 of the first socket body 13 and the second socket body 14.

  Further, in the present embodiment, since the first compression spring 6 and the second compression spring 7 are not fixed to the third conductive member 5, the second conductive member 4, the second compression spring 7, the third conductive member 5, Each member of the first compression spring 6 and the first conductive member 3 can be assembled by dropping into the through hole 11 of the socket body 10. Therefore, the assembly operation of the inspection socket 1 is facilitated.

  In the present embodiment, when any one of the first compression spring 6, the first conductive member 3, the third conductive member 5, the second compression spring 7, and the second conductive member 4 is replaced, the socket cover 31 is used. In addition, since the replacement work can be performed in a state where the socket cover 31 is removed from the main body part 32 after the bolts are removed from the main body part 32, the workability of the replacement work can be improved.

  As described above, the inspection socket according to the present invention has an effect that it can be easily processed and can be applied to different objects to be inspected to increase versatility. It is useful as an inspection socket for inspecting elements and the like.

It is a figure which shows 1st Embodiment of the socket for a test | inspection which concerns on this invention, and is front sectional drawing of a socket for a test | inspection. It is a figure which shows 1st Embodiment of the socket for a test | inspection which concerns on this invention, and is a figure explaining the procedure of the assembly method of the socket for a test | inspection. It is an AA direction arrow line view of FIG.2 (b). It is a figure which shows 1st Embodiment of the socket for a test | inspection which concerns on this invention, and is front sectional drawing of the socket for a test | inspection which shows the operation state at the time of a test. It is a figure which shows 1st Embodiment of the socket for a test | inspection which concerns on this invention, and is front sectional drawing of the socket for a test | inspection provided with the 2nd electroconductive member of another structure. It is a figure which shows 1st Embodiment of the socket for a test | inspection which concerns on this invention, and is front sectional drawing of the socket for a test | inspection provided with the 2nd electroconductive member of another structure. It is a figure which shows 2nd Embodiment of the socket for an inspection which concerns on this invention, and is front sectional drawing of the socket for an inspection. It is a figure which shows 3rd Embodiment of the socket for an inspection which concerns on this invention, and is front sectional drawing of the socket for inspection.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Inspection socket 2 Both-ends displacement type contact probe 3 1st electroconductive member 3f, 4f Flange part 4 2nd electroconductive member 5 3rd electroconductive member 5a Flange part (expansion part)
5b 1st end part 5c 2nd end part 6 1st compression spring (1st elastic member)
7 Second compression spring (second elastic member)
DESCRIPTION OF SYMBOLS 10 Socket main body 11 Through-hole 11a, 11b, 31a Opening part 11d, 11e, 31d Annular engagement part (engagement part)
11f 1st through-hole (one side of a through-hole)
11g Second through hole (the other side of the through hole)
13 First socket body 14 Second socket body 21 Object to be inspected 21a Connection terminal 22 Printed wiring board (inspection device)
22a Connection terminal 31 Socket cover 32 Body

Claims (3)

A socket body in which at least one or more through holes are formed;
A first conductive member that is disposed on the opening side of one end of the through hole and that constitutes an electrical contact portion for contacting a connection terminal of an object to be inspected;
A second conductive member disposed on the opening side of the other end of the through hole and constituting an electrical contact portion for contacting a connection terminal of the inspection device;
A third conductive member housed in a through hole of the socket body, the first conductive member being slidably held and coupled to one end, and the second conductive member slidably held and coupled to the other end; ,
A diameter-expanded portion formed at a predetermined position in the axial direction of the third conductive member and expanded radially outward of the conductive member;
The first conductive member and the enlarged diameter portion are provided so as to be in contact with and surround the third conductive member therebetween, and the first conductive member and the enlarged diameter portion are closer than a predetermined interval in the axial direction. A hollow first elastic member that biases both in a direction that sometimes enlarges the spacing;
The second conductive member and the enlarged diameter portion are provided so as to be in contact with and surround the third conductive member therebetween, and the second conductive member and the enlarged diameter portion are closer than a predetermined interval in the axial direction. A hollow second elastic member that urges both in a direction that sometimes enlarges the spacing;
An inspection socket characterized by comprising:   The inspection socket according to claim 1, wherein specifications of the first elastic member and the second elastic member are different. The socket body includes a main body portion in which the through hole is formed, and a socket cover provided separately from the main body portion and having an opening portion having an opening area smaller than an inner peripheral area of the through hole,
The inspection socket according to claim 1, wherein an engaging portion is formed by the socket cover portion between the opening and the through hole.

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