TWI880980B - Socket - Google Patents

Abstract

A socket according to the present invention includes a contact pin and a socket body. The socket body includes a fixed portion arranged so as to separate a first electric component arrangement side and a second electric component arrangement side, a movable portion that is capable of carrying a first electric component and is elastically supported so as to be able to move in an upward and downward direction above the fixed portion, a holding portion that penetrates the fixed portion and the movable portion in the upward and downward direction and holds the contact pin, and a guide portion that is inserted through the fixed portion and the movable portion so that it can move in the upward and downward direction, the guide portion making the movable portion move downward as it moves downward in a non-arrangement state in which a second electric component is not disposed below a partition wall portion.

Description

Socket

The present invention relates to an electrical component socket that is electrically connected to an electrical component such as a semiconductor device (hereinafter referred to as an "IC package").

In the past, as a socket for electrical parts, an IC socket (hereinafter referred to as a "socket") having a contact pin is known (see Patent Document 1). The socket is arranged between the IC package that is the inspection object and the inspection substrate. The package side terminal of the IC package and the substrate side terminal of the inspection substrate are electrically connected via the contact pin, so that a conduction test and the like can be performed.

The socket disclosed in Patent Document 1 comprises: a base component, an adapter, and a plurality of contacts arranged on a substrate for inspection when in use.

The adapter can be used to place IC packages. The adapter is elastically supported on the base member by a spring so that it can move up and down.

A plurality of contact pins are held in a through hole of a base member. The upper ends of the plurality of contact pins are disposed in the through hole formed in the adapter.

[Prior Art Literature]

[Patent Literature]

[Patent Document 1] Japanese Patent Publication No. 2003-187937

However, in the case of the socket described above, when the inspection substrate is not disposed below the base member, the upper end of the contact pin may come out downward from the through hole of the adapter, causing damage to the upper end of the contact pin.

The purpose of the present invention is to prevent damage to the contact pins when the socket is not in the configured state.

One form of the socket of the present invention electrically connects a first electrical component to a second electrical component, and the socket has:

A contact pin is in contact with the first electrical component and the second electrical component when in use; and

Socket body;

The main body of the socket is equipped with:

The fixing portion is configured to separate the upper first electrical component configuration side from the lower second electrical component configuration side;

The movable part is formed to carry the first electrical component and is elastically supported above the fixed part so as to be movable in the up and down directions;

The holding portion penetrates the fixed portion and the movable portion in the up-down direction and holds the contact pin; and

The guide part is inserted through the fixed part and the movable part in a manner that allows it to move in the up-down direction, and in a non-arranged state where the second electrical component is not arranged below the fixed part, the guide part moves downward as it moves downward.

According to the present invention, damage to the contact pins in the non-installed state of the socket can be suppressed.

1: Socket body

2: Fixed part

3: Movable parts

4: Support part

5: Guide displacement unit

6:Touch needle

9: Covering components

20: Base

20a: First wall portion

20b: Second wall portion

20c: Third wall section

20d: Fourth wall

21a: The first section

22b: The second section

23: Maintain the board

25: Cover

25a: First cover member

25b: Second cover member

30: Loading section

31: Frame

31a: First wall part

31b: Second wall section

31c: Third wall section

31d: Fourth wall section

32a: First extension part

32b: Second extension part

32c: The third extension part

32d: Fourth extension

33a: First perforation

33b: Second perforation

33c: Third perforation

33d: Fourth perforation

34a: First guide hole

35a: First guide extension

36b: Second guide hole

37b: Second guide extension

38: Movable side retaining part

41: Guide shaft

41a: First axis component

41b: Second shaft component

42: Elastic support part

42a: First spring

42b: Second spring

42c: Third spring

42d: Fourth spring

51: Guidance Department

52a: First guide component

53b: Second guide component

54: Displacement unit

54a: First push spring

54b: Second push spring

61: Upper contact part

62: Lower contact part

71a: First positioning pin

71b: Second positioning pin

71c: Third positioning pin

71d: Fourth positioning pin

80: IC packaging

81: Inspection substrate

82: Locking parts

201: Containment space

202a: first inner concave portion

202b: The second inner concave portion

202c: The third inner concave part

202d: The fourth inner concave part

203a: First medial perforation

203b: Second medial canal perforation

203c: Perforation of the third medial canal

203d: Perforation of the fourth medial canal

204a,333,341,361: Large diameter hole

204b,332,342,362: Section

204c,331,343,363: Small diameter hole

205a: first outer concave portion

205b: Second outer concave portion

205c: The third outer concave portion

205d: The fourth outer concave portion

206a: First lateral perforation

206b: Second external perforation

206c: Perforation of the third canal on the outside

206d: Perforation of the fourth lateral canal

207a: First guide hole

207b: Second guide hole

208a: first fixing part

208b: Second fixing part

211a,221b: upper side section

212a, 222b: Lower side section

230: Upper side retaining plate

231: Lower side retaining plate

232: Partition

233a: First perforation

233b: Second perforation

233c: Third perforation

233d: Fourth canal perforation

234a: First wrist

234b: Second wrist

235a,235b: Through-hole

236: Fixed side retaining part

237:Holding hole

301: Perforation

411a,412a: first axis

411b, 412b: Second axis

411c,412c: Third axis

411d,412d: Fourth axis

521,531: shaft

522,532:Head

523,533: Spring retaining part

801: Package side terminal

811: Substrate side terminal

S: socket

Y1,Y2,Y3,Y4,Y5:Partial

α: Center axis

Figure 1 is a top view of the socket of the embodiment.

Figure 2 is a bottom view of the socket.

Figure 3 is a cross-sectional view taken along line X1-X1 of Figure 1.

Figure 4 is a cross-sectional view taken along line X2-X2 of Figure 1.

Figure 5 is a cross-sectional view taken along line X3-X3 of Figure 1.

Figure 6A is an enlarged view of the Y2 portion of Figure 4.

Figure 6B is an enlarged view of the Y3 portion of Figure 4.

Figure 6C is an enlarged view of the Y4 portion of Figure 5.

Figure 6D is an enlarged view of the Y5 portion of Figure 5.

Figure 7 is a three-dimensional diagram of the socket.

Figure 8 is a three-dimensional diagram of the base component.

Figure 9 is a three-dimensional diagram of the movable part.

Figure 10 is a three-dimensional diagram of the guide part.

Figure 11A is a cross-sectional view of the Y1 portion of Figure 3 in the non-configuration state.

Figure 11B is a cross-sectional view of the Y1 portion of Figure 3 in the configuration state.

Figure 11C is a cross-sectional view of the Y1 portion of Figure 3 in the use state.

The following is a detailed description of the implementation of the present invention based on the drawings. In addition, the socket S of the implementation described below is an example of the socket of the present invention, and the present invention is not limited to the implementation.

[Implementation type]

Referring to Figures 1 to 11C, the socket S of this embodiment is described.

As shown in Figures 1 and 2, this embodiment is explained using a rectangular coordinate system (X, Y, Z). The rectangular coordinate system (X, Y, Z) shown in the following figures is common to the rectangular coordinate system (X, Y, Z) shown in other figures.

The X direction in the rectangular coordinate system (X, Y, Z) is equivalent to the horizontal direction of the socket S. Also, the Y direction in the rectangular coordinate system (X, Y, Z) is equivalent to the vertical direction of the socket S. Also, the Z direction in the rectangular coordinate system (X, Y, Z) is equivalent to the height direction of the socket S. The horizontal direction of the socket S and the vertical direction of the socket S can also be interchanged.

In addition, the Z direction in the rectangular coordinate system (X, Y, Z) also corresponds to the up and down direction of the socket S. The Z direction + side corresponds to the upper side of the socket S, and the Z direction - side corresponds to the lower side of the socket S.

In the following description, in the top view of the socket S and the components constituting the socket S, the corners on the - side of the X direction and the - side of the Y direction are called the first corners, the corners on the - side of the X direction and the + side of the Y direction are called the second corners, the corners on the + side of the X direction and the + side of the Y direction are called the third corners, and the corners on the + side of the X direction and the - side of the Y direction are called the fourth corners.

〈Socket〉

The socket S is used as a socket to electrically connect the IC package 80 (see FIG. 11B ) and the inspection substrate 81 (see FIG. 11B ) when inspecting electrical components such as the IC package 80 (see FIG. 11B ). In this embodiment, the IC package 80 is an example of a first electrical component. Also, the inspection substrate 81 is an example of a second electrical component. In addition, there is also a case where the inspection substrate 81 is an example of a first electrical component and the IC package 80 is an example of a second electrical component.

A plurality of package side terminals 801 (see FIG. 11B ) are arranged in a matrix on the lower surface of the IC package 80. The package side terminals 801 are, for example, solder balls. In addition, a plurality of substrate side terminals 811 (see FIG. 11B ) are arranged in a matrix on the upper surface of the inspection substrate 81.

In the following description, the state of the socket S used in the inspection (the state shown in FIG. 11C ) is referred to as the use state of the socket S. In the use state of the socket S, the socket S is arranged on the inspection substrate 81 in a state where the IC package 80 is accommodated. In the use state of the socket S, the IC package 80 is pushed downward by the covering member (see FIG. 11C ).

In addition, the state in which the inspection substrate 81 is not arranged below the socket S (the state shown in FIG. 11A ) is referred to as the non-arranged state of the socket S. In addition, the state in which the inspection substrate 81 is arranged below the socket S (the state shown in FIG. 11B and FIG. 11C ) is referred to as the arranged state of the socket S. The arranged state of the socket S can also be regarded as the state in which the socket S is placed on the inspection substrate 81.

First, referring to FIG. 1 , FIG. 3 and FIG. 11C , the outline of the socket S of this embodiment is described. The socket S has: a contact pin 6 that contacts the first electrical component (IC package 80) and the second electrical component (inspection substrate 81) when in use, and a socket body 1. The contact pin 6 is held in the socket body 1.

The socket body 1 has: a fixed portion 2 fixed to the inspection substrate 81 when in use; and a movable portion 3 accommodated in the accommodation space 201 (see Figure 8) of the fixed portion 2. The movable portion 3 is elastically supported on the fixed portion 2 via the support portion 4. In the configuration state of the socket S, the movable portion 3 can move in the up and down directions within a predetermined stroke range relative to the fixed portion 2. In addition, the support portion 4 gives the movable portion 3 an upward elastic force.

Furthermore, the socket body 1 has a guide displacement portion 5. When the socket S is not in the configuration state, the guide displacement portion 5 moves the movable portion 3 downward as it moves downward. Since the downward elastic force received by the movable portion 3 from the guide displacement portion 5 is greater than the upward elastic force received by the movable portion 3 from the support portion 4, the guide displacement portion 5 can keep the movable portion 3 at the lower end of the stroke when the socket S is not in the configuration state.

On the other hand, in the configuration state of the socket S, the guide displacement part 5 moves upward based on the upward force received from the inspection substrate 81. Next, when the guide displacement part 5 moves upward, the movable part 3 moves to the upper end of the stroke based on the upward elastic force received from the support part 4. In this state, the movable part 3 can move in the up and down direction relative to the fixed part 2.

The specific structure of the socket S is described below. The socket S has a socket body 1 and a plurality of contacts 6.

〈Socket body〉

The socket body 1 has a fixed part 2, a movable part 3, a supporting part 4 and a guiding displacement part 5.

〈Fixed part〉

As shown in Figures 1 and 2, the fixing portion 2 has a base 20, a retaining plate portion 23, and a cover portion 25. When the socket S is in use, the fixing portion 2 can be fixed on the upper surface of the inspection substrate 81 (see Figure 11C).

〈Base〉

As shown in FIG. 1, FIG. 2 and FIG. 8, the base 20 has a first wall portion 20a, a second wall portion 20b, a third wall portion 20c, and a fourth wall portion 20d connected to form a rectangular frame. The base 20 is an example of a side wall portion.

The first wall portion 20a and the third wall portion 20c extend in the X direction in parallel with each other. The third wall portion 20c is disposed closer to the + side in the Y direction than the first wall portion 20a.

The second wall portion 20b and the fourth wall portion 20d extend in the Y direction in parallel with each other. The fourth wall portion 20d is disposed closer to the + side in the X direction than the second wall portion 20b.

The base 20 has a rectangular inner surface surrounding the central axis α of the base 20 (see FIG. 8 ). The inner surface of the base is composed of the inner side surfaces of the first wall portion 20a, the second wall portion 20b, the third wall portion 20c, and the fourth wall portion 20d.

In addition, the inner side surfaces of the first wall 20a, the second wall 20b, the third wall 20c, and the fourth wall 20d are the side surfaces close to the central axis α of the base 20 among the two side surfaces in the short-side direction of the first wall 20a, the second wall 20b, the third wall 20c, and the fourth wall 20d. In addition, the outer side surfaces of the first wall 20a, the second wall 20b, the third wall 20c, and the fourth wall 20d are the side surfaces far from the central axis α of the base 20 among the two side surfaces in the short-side direction of the first wall 20a, the second wall 20b, the third wall 20c, and the fourth wall 20d.

The base 20 has a receiving space 201 (see FIG8 ) surrounded by the inner surface of the base 20. The receiving space 201 is used to receive the movable part 3 described later.

The base 20 has an inner first recess 202a, an inner second recess 202b, an inner third recess 202c, and an inner fourth recess 202d at positions corresponding to the four corners of the inner surface.

The inner first recess 202a is provided at a position corresponding to the first corner of the inner surface of the base 20. The inner second recess 202b is provided at a position corresponding to the second corner of the inner surface of the base 20. The inner third recess 202c is provided at a position corresponding to the third corner of the inner surface of the base 20. The inner fourth recess 202d is provided at a position corresponding to the fourth corner of the inner surface of the base 20.

The first inner recess 202a, the second inner recess 202b, the third inner recess 202c, and the fourth inner recess 202d are respectively recessed downward from the upper surface of the base 20.

The base 20 has a first inner through hole 203a penetrating the bottom in the up-down direction at the bottom of the first inner recess 202a (see FIG. 6A ). The base 20 has a second inner through hole 203b penetrating the bottom in the up-down direction at the bottom of the second inner recess 202b (see FIG. 6C ).

The base 20 has a third inner through hole 203c penetrating the bottom in the up-down direction at the bottom of the third inner recess 202c (see FIG. 6B ). The base 20 has a fourth inner through hole 203d penetrating the bottom in the up-down direction at the bottom of the fourth inner recess 202d (see FIG. 6D ).

As shown in FIG. 6A to FIG. 6D , the first inner through hole 203a, the second inner through hole 203b, the third inner through hole 203c, and the fourth inner through hole 203d respectively have a large-diameter hole portion 204a, a segment portion 204b, and a small-diameter hole portion 204c in order from the top.

The lower end of the large-diameter hole portion 204a is connected to the upper end of the small-diameter hole portion 204c via the segment portion 204b. The inner diameter of the large-diameter hole portion 204a is larger than the inner diameter of the small-diameter hole portion 204c. The segment portion 204b is a flat surface in the shape of an annulus facing upward.

In addition, the small diameter hole portion 204c of the second inner through hole 203b and the fourth inner through hole 203d are screw holes. The male screw portion of the locking part 82 (bolt, etc.) used to fix the base 20 and the retaining plate portion 23 is engaged with the small diameter hole portion 204c of the second inner through hole 203b and the fourth inner through hole 203d.

The base 20 has an outer first recess 205a, an outer second recess 205b, an outer third recess 205c, and an outer fourth recess 205d at positions corresponding to the four corners of the outer surface.

The first outer recess 205a is provided at a position corresponding to the first corner of the outer surface of the base 20. The second outer recess 205b is provided at a position corresponding to the second corner of the outer surface of the base 20. The third outer recess 205c is provided at a position corresponding to the third corner of the outer surface of the base 20. The fourth outer recess 205d is provided at a position corresponding to the fourth corner of the outer surface of the base 20.

The first outer recess 205a, the second outer recess 205b, the third outer recess 205c, and the fourth outer recess 205d are respectively recessed downward from the upper surface of the base 20.

The base 20 has an outer first through hole 206a (see FIG. 4 ) penetrating the bottom in the up-down direction at the bottom of the outer first recess 205a. The first positioning pin 71a is inserted through the outer first through hole 206a.

The base 20 has an outer second through hole 206b (see FIG. 5 ) penetrating the bottom in the up-down direction at the bottom of the outer second recess 205b. The second positioning pin 71b is inserted through the outer second through hole 206b.

The base 20 has an outer third through hole 206c (see FIG. 4 ) at the bottom of the outer third recess 205c that penetrates the bottom in the Z direction. The third positioning pin 71c is inserted through the outer third through hole 206c.

The base 20 has a fourth outer through hole 206d (see FIG. 5 ) at the bottom of the fourth outer recess 205d that penetrates the bottom in the Z direction. The fourth positioning pin 71d is inserted through the fourth outer through hole 206d.

The first positioning pin 71a, the second positioning pin 71b, the third positioning pin 71c, and the fourth positioning pin 71d are used to realize the positioning of the base 20 and the retaining plate 23.

The base 20 has a first guide hole 207a on the second wall portion 20b (see FIG. 3 ). The first guide hole 207a is a first guide member 52a for holding the guide displacement portion 5. In addition, the base 20 has a first fixed portion 208a on the second wall portion 20b (see FIG. 8 ). The first cover member 25a of the cover portion 25 is fixed to the first fixed portion 208a. The first guide hole 207a is an example of a fixed side guide hole and a fixed side first guide hole.

The base 20 has a second guide hole 207b on the fourth wall portion 20d (see FIG. 3 ). The second guide hole 207b is a second guide member 53b for holding the guide displacement portion 5. In addition, the base 20 has a second fixed portion 208b on the fourth wall portion 20d (see FIG. 8 ). The second cover member 25b of the cover portion 25 is fixed to the second fixed portion 208b. The second guide hole 207b is an example of a fixed side guide hole and a fixed side second guide hole.

Here, referring to FIG. 3, the structures of the first guide hole 207a, the first fixing portion 208a, the second guide hole 207b, and the second fixing portion 208b are specifically described.

The base 20 has a stepped first section 21a which becomes lower from the outer side surface toward the inner side surface at the center portion in the Y direction of the second wall portion 20b.

The first section 21a has an upper section 211a and a lower section 212a in order from the outer side of the second wall 20b. The upper section 211a is provided below the upper surface of the second wall 20b. The lower section 212a is provided below the upper section 211a.

The first guide hole 207a is provided in the lower section 212a. The first guide hole 207a penetrates the lower section 212a in the up-down direction.

The first guide hole 207a has an inner peripheral surface along the outer peripheral surface of the shaft portion 521 (refer to FIG. 10 ) of the first guide member 52a. In the case of this embodiment, the first guide hole 207a is a rounded rectangular shape that is longer in the long side direction (Y direction) of the second wall portion 20b. With this structure, the first guide hole 207a limits the rotation of the first guide member 52a.

The first fixing portion 208a is provided on the upper section 211a (refer to FIG. 8 ). Specifically, the first fixing portion 208a is composed of a pair of screw holes provided on the upper section 211a. In addition, there is no particular limitation on the number of screw holes.

The base 20 has a stepped second section 22b that decreases from the outer side surface toward the inner side surface at the center of the fourth wall section 20d in the longitudinal direction (Y direction).

The second section 22b has an upper section 221b and a lower section 222b in order from the outer side of the fourth wall 20d. The upper section 221b is provided below the upper surface of the fourth wall 20d. The lower section 222b is provided below the upper section 221b.

The second guide hole 207b is provided in the lower section 222b. The second guide hole 207b penetrates the lower section 222b in the up-down direction.

The second guide hole 207b has an inner peripheral surface along the outer peripheral surface of the shaft portion 531 (see FIG. 10 ) of the second guide member 53b. In the case of this embodiment, the second guide hole 207b is a rounded rectangular shape that is longer in the long side direction (Y direction) of the fourth wall portion 20d. With this structure, the second guide hole 207b limits the rotation of the second guide hole 207b.

The lower side section 222b has the function of serving as a blocking member to limit the downward movement of the second guide member 53b.

The second fixing portion 208b is provided on the upper section 221b (refer to FIG. 8 ). Specifically, the second fixing portion 208b is composed of a pair of screw holes provided on the upper section 221b. In addition, there is no particular limitation on the number of screw holes.

〈Maintaining plate〉

The holding plate portion 23 is plate-shaped and fixed to the lower surface of the base 20. The holding plate portion 23 seals the receiving space 201 of the base 20 from below. The holding plate portion 23 holds the contact pin 6.

The retaining plate portion 23 is composed of an upper retaining plate portion 230 and a lower retaining plate portion 231 which are stacked in the up-down direction.

The holding plate portion 23 has a partition wall portion 232, a first arm portion 234a, a second arm portion 234b, and a fixed side holding portion 236. The upper holding plate portion 230 and the lower holding plate portion 231 respectively have structures constituting a part of the partition wall portion 232, the first arm portion 234a, the second arm portion 234b, and the fixed side holding portion 236. By combining these structures, the partition wall portion 232, the first arm portion 234a, the second arm portion 234b, and the fixed side holding portion 236 are constituted.

〈Partition wall〉

The partition wall portion 232 is in the shape of a rectangular plate and has a larger shape than the opening portion on the lower side of the storage space 201. The partition wall portion 232 seals the storage space 201 of the base 20 from below. This partition wall portion 232 separates the upper first electrical component configuration side from the lower second electrical component configuration side when the socket S is in use.

The partition wall portion 232 has a plurality of retaining holes 237 that penetrate the partition wall portion 232 in the up-down direction. The retaining holes 237 constitute the fixed side retaining portion 236.

The partition wall portion 232 has a first through hole 233a at a portion corresponding to the first corner (see FIG. 4 and FIG. 6A). The partition wall portion 232 has a second through hole 233b at a portion corresponding to the second corner (see FIG. 5 and FIG. 6C). The partition wall portion 232 has a third through hole 233c at a portion corresponding to the third corner (see FIG. 4 and FIG. 6B). The partition wall portion 232 has a fourth through hole 233d at a portion corresponding to the fourth corner (see FIG. 5 and FIG. 6D).

〈First wrist and second wrist〉

As shown in FIG. 2 , the first arm portion 234a is provided at the second corner portion of the partition wall portion 232. As shown in FIG. 2 , the second arm portion 234b is provided at the fourth corner portion of the partition wall portion 232. The first arm portion 234a and the second arm portion 234b extend from the partition wall portion 232 in a direction away from each other.

The first arm 234a has a through hole 235a (see FIG. 5 ) that passes through the first arm 234a in the up-down direction. The second positioning pin 71b is inserted through the through hole 235a. The first arm 234a positions the holding plate 23 and the base 20 based on the engagement with the second positioning pin 71b.

The second arm 234b has a through hole 235b (see FIG. 5 ) that passes through the second arm 234b in the up-down direction. The fourth positioning pin 71d is inserted through the through hole 235b. The second arm 234b positions the holding plate 23 and the base 20 based on the engagement with the fourth positioning pin 71d.

〈Fixed side retaining part〉

The fixed side holding portion 236 is an example of a holding portion, and is used to hold a plurality of contacts 6. The fixed side holding portion 236 is composed of a plurality of holding holes 237 provided in the partition wall portion 232. In addition, the arrangement of the holding holes 237 can be appropriately determined according to the arrangement of the package side terminal 801 of the IC package 80 and the substrate side terminal 811 of the inspection substrate 81.

The retaining plate portion 23 having the above structure is fixed to the lower surface of the base 20 by a plurality of locking parts (such as bolts).

〈Lid〉

The cover 25 is used to prevent the guide part 51 and the movable part 3 described later from escaping upward. In addition, the cover 25 is also the part that bears the upward elastic force of the displacement part 54 described later. This cover 25 is fixed to the base 20. Therefore, the cover 25 can also be regarded as a part of the base 20. That is, the cover 25 is an example of a part of the side wall.

Specifically, as shown in FIG. 1 and FIG. 3 , the cover portion 25 has a first cover member 25a and a second cover member 25b.

〈First cover member〉

The first cover member 25a is in the shape of a rectangular plate and is fixed to the first fixing portion 208a of the base 20. The inner half of the first cover member 25a is opposite to the lower side section 212a of the base 20 in the up-down direction.

The inner half of the first cover member 25a is opposite to the upper end surface of the first guide member 52a described later in the vertical direction. There is a space between the inner half of the first cover member 25a and the upper end surface of the first guide member 52a. The first push spring 54a of the displacement portion 54 described later is provided in the space.

The first cover member 25a has a cover side spring retaining portion (not shown) on the lower surface of the inner half. In the present embodiment, the cover side spring retaining portion is a pair of recessed portions. The cover side spring retaining portion retains the upper end portion of the first push spring 54a.

This first cover member 25a is used to limit the upward movement of the first guide member 52a within a predetermined range. In this way, the first cover member 25a prevents the first guide member 52a from escaping upward.

〈Second cover member〉

The second cover member 25b is in the shape of a rectangular plate and is fixed to the second fixing portion 208b of the base 20. The inner half of the second cover member 25b is opposite to the lower side section 222b of the base 20 in the up-down direction.

The inner half of the second cover member 25b is opposite to the upper end surface of the second guide member 53b described later in the vertical direction. There is a space between the inner half of the second cover member 25b and the upper end surface of the second guide member 53b. The second push spring 54b of the displacement portion 54 described later is provided in the space.

The second cover member 25b has a cover side spring retaining portion (not shown) on the lower surface of the inner half. In the present embodiment, the cover side spring retaining portion is a pair of recessed portions. The cover side spring retaining portion retains the upper end portion of the second push spring 54b.

〈Movable parts〉

The movable part 3 is arranged in the receiving space 201 of the base 20. The movable part 3 is formed to be able to carry the first electrical component (IC package 80), and is elastically supported on the fixed part 2 above the partition wall part 232 of the fixed part 2 so as to be movable in the up-down direction. Specifically, the movable part 3 is elastically supported on the fixed part 2 via the supporting part 4. When being supported on the fixed part 2, the movable part 3 can move in the up-down direction relative to the fixed part 2.

The movable part 3 has a mounting part 30, a frame part 31 and a movable side holding part 38.

〈Carrying section〉

The loading portion 30 is used to load the first electrical component on the upper surface. The loading portion 30 is in the shape of a rectangular plate and has an outer shape smaller than the outer shape of the receiving space 201 of the base 20. The loading portion 30 has a plurality of through holes 301 that penetrate the loading portion 30 in the up-down direction. The through holes 301 constitute the movable side retaining portion 38.

The mounting portion 30 is disposed above the partition wall portion 232 while facing the partition wall portion 232 of the fixed portion 2 in the vertical direction. When the movable portion 3 moves in the vertical direction relative to the fixed portion 2, the distance between the lower surface of the mounting portion 30 and the upper surface of the partition wall portion 232 changes.

〈Frame〉

The frame portion 31 has a first wall portion 31a, a second wall portion 31b, a third wall portion 31c, and a fourth wall portion 31d connected in a rectangular frame shape. The frame portion 31 is an example of a side wall portion of the movable portion.

The first wall portion 31a and the third wall portion 31c extend in the X direction in parallel with each other. The third wall portion 31c is arranged closer to the + side of the Y direction than the first wall portion 31a. The long side directions of the first wall portion 31a and the third wall portion 31c coincide with each other in the X direction. The short side directions of the first wall portion 31a and the third wall portion 31c coincide with each other in the Y direction.

The second wall portion 31b and the fourth wall portion 31d extend in the Y direction in parallel with each other. The fourth wall portion 31d is arranged closer to the + side of the X direction than the second wall portion 31b. The long side directions of the second wall portion 31b and the fourth wall portion 31d coincide with each other in the Y direction. The short side directions of the second wall portion 31b and the fourth wall portion 31d coincide with each other in the X direction.

The first wall portion 31a is arranged inwardly of the first wall portion 20a of the base 20 and faces the first wall portion 20a of the base 20 in the Y direction.

The second wall portion 31b is arranged inwardly of the second wall portion 20b of the base 20 and faces the second wall portion 20b of the base 20 in the X direction.

The third wall portion 31c is arranged inwardly of the third wall portion 20c of the base 20 and faces the third wall portion 20c of the base 20 in the Y direction.

The fourth wall portion 31d is arranged inwardly of the fourth wall portion 20d of the base 20 and faces the fourth wall portion 20d of the base 20 in the X direction.

The lower ends of the first wall portion 31a, the second wall portion 31b, the third wall portion 31c, and the fourth wall portion 31d are connected to the outer periphery of the mounting portion 30.

The movable part 3 has a first extension part 32a at the first corner of the frame part 31 (see FIG. 1). The movable part 3 has a second extension part 32b at the second corner of the frame part 31 (see FIG. 1). The movable part 3 has a third extension part 32c at the third corner of the frame part 31 (see FIG. 1). The movable part 3 has a fourth extension part 32d at the fourth corner of the frame part 31 (see FIG. 1).

The movable part 3 has a first through hole 33a penetrating the first extension part 32a in the vertical direction at the first extension part 32a (refer to FIG. 6A and FIG. 9). The movable part 3 has a second through hole 33b penetrating the second extension part 32b in the vertical direction at the second extension part 32b (refer to FIG. 6C and FIG. 9).

The movable part 3 has a third through hole 33c penetrating the third extension part 32c in the vertical direction at the third extension part 32c (see FIG. 6B and FIG. 9). The movable part 3 has a fourth through hole 33d penetrating the fourth extension part 32d in the vertical direction at the fourth extension part 32d (see FIG. 6D and FIG. 9).

As shown in FIG. 6A to FIG. 6D , the first through hole 33a, the second through hole 33b, the third through hole 33c, and the fourth through hole 33d respectively have a small-diameter hole portion 331, a segment portion 332, and a large-diameter hole portion 333 in order from the top.

The lower end of the small-diameter hole portion 331 is connected to the upper end of the large-diameter hole portion 333 via the segment portion 332. The inner diameter of the large-diameter hole portion 333 is larger than the inner diameter of the small-diameter hole portion 331. The segment portion 332 is a flat annular surface facing downward.

The movable part 3 has a first guide hole 34a in the second wall part 31b (refer to FIG. 3 and FIG. 11A to FIG. 11C). The first guide hole 34a is used to hold the first guide member 52a of the guide displacement part 5. The first guide hole 34a is an example of a movable side guide hole and a movable side first guide hole.

Specifically, the movable part 3 has a first guide extension part 35a extending from the outer side surface of the second wall part 31b to the outside. The first guide hole 34a is provided in the first guide extension part 35a. The first guide hole 34a penetrates the first guide extension part 35a in the up-down direction.

The first guide hole 34a has a large diameter hole portion 341, a segment portion 342, and a small diameter hole portion 343 in order from the upper side (refer to FIG. 3 and FIG. 11A to FIG. 11C). The large diameter hole portion 341 has an inner peripheral surface along the outer peripheral surface of the head portion 522 of the first guide member 52a. In the case of this embodiment, the large diameter hole portion 341 is a rounded rectangular shape that is longer in the long side direction (Y direction) of the second wall portion 31b.

The small-diameter hole portion 343 has an inner peripheral surface along the outer peripheral surface of the shaft portion 521 of the first guide member 52a. The small-diameter hole portion 343 has the same shape as the first guide hole 207a of the base 20. The small-diameter hole portion 343 and the first guide hole 207a are opposite to each other in the vertical direction. In the case of this embodiment, the small-diameter hole portion 343 is a rounded rectangular shape that is longer in the long side direction (Y direction) of the second wall portion 31b.

The lower end of the large-diameter hole portion 341 is connected to the upper end of the small-diameter hole portion 343 via the upward-facing section 342.

The segment 342 is opposite to the lower surface of the head 522 of the first guide member 52a in the vertical direction. The segment 342 limits the downward movement of the first guide member 52a to a predetermined range based on the engagement with the head 522 of the first guide member 52a. The segment 342 has the function of a stopper that limits the downward movement of the first guide member 52a.

As mentioned above, the first guide extension portion 35a is disposed in the space between the lower side section 212a of the base 20 and the first cover member 25a.

In addition, the movable part 3 has a second guide hole 36b in the fourth wall part 31d (see FIG. 3 ). The second guide hole 36b is used to hold the second guide member 53b that guides the displacement part 5. The second guide hole 36b is an example of a movable side guide hole and a movable side second guide hole.

Specifically, the movable part 3 has a second guide extension part 37b extending outward from the outer side surface of the fourth wall part 31d. The second guide hole 36b is provided in the second guide extension part 37b.

The second guide hole 36b has a large diameter hole portion 361, a segment portion 362, and a small diameter hole portion 363 in order from the upper side (refer to FIG. 3). The large diameter hole portion 361 has an inner peripheral surface along the outer peripheral surface of the head portion 532 of the second guide member 53b. In the case of this embodiment, the large diameter hole portion 361 is a rounded rectangular shape that is longer in the long side direction (Y direction) of the fourth wall portion 31d.

The small-diameter hole portion 363 has an inner peripheral surface along the outer peripheral surface of the shaft portion 531 of the second guide member 53b. The small-diameter hole portion 363 has the same shape as the second guide hole 207b of the base 20. The small-diameter hole portion 363 and the second guide hole 207b are opposite to each other in the vertical direction. In the case of this embodiment, the small-diameter hole portion 363 is a rounded rectangular shape that is longer in the long side direction (Y direction) of the fourth wall portion 31d.

The lower end of the large-diameter hole portion 361 is connected to the upper end of the small-diameter hole portion 363 via the upward-facing section 362.

The segment 362 is opposite to the lower surface of the head 532 of the second guide member 53b in the vertical direction. The segment 362 limits the downward movement of the second guide member 53b within a predetermined range based on the engagement with the head 532 of the second guide member 53b. The segment 362 has the function of a stopper that limits the downward movement of the second guide member 53b.

As mentioned above, the second guide extension portion 37b is disposed in the space between the lower side section 222b of the base 20 and the second cover member 25b.

〈Movable side retaining part〉

The movable side holding portion 38 is provided on the mounting portion 30. The movable side holding portion 38 is composed of a plurality of through holes 301 provided on the mounting portion 30. The arrangement of the through holes 301 can be appropriately determined according to the arrangement of the package side terminal 801 of the IC package 80 and the substrate side terminal 811 of the inspection substrate 81.

The movable side holding portion 38 is opposite to the fixed side holding portion 236 in the vertical direction. The movable side holding portion 38 and the fixed side holding portion 236 penetrate the partition wall portion and the movable portion in the vertical direction and are an example of a holding portion for holding the contact pin.

〈Supporting part〉

The supporting part 4 elastically supports the movable part 3 on the fixed part 2. The supporting part 4 is provided between the movable part 3 and the fixed part 2. The supporting part 4 imparts an upward elastic force to the movable part 3.

In the case of this embodiment, the support portion 4 is provided at a position different from the guide displacement portion 5 described later in the XY plane (also referred to as the first plane). Therefore, it is easier to replace the movable portion 3 than in a case where the support portion 4 and the guide displacement portion 5 are provided at the same position in the XY plane. As a result, for example, it is easier to replace the movable portion in accordance with the size of the first electrical component and to inspect first electrical components of various sizes.

Below, the specific structure of the support portion 4 is described with reference to Figures 4 to 6D.

Specifically, the support portion 4 has a guide shaft portion 41 and an elastic support portion 42.

〈Guide shaft〉

The guide shaft portion 41 guides the movement of the movable portion 3 when the movable portion 3 moves up and down relative to the fixed portion 2. The guide shaft portion 41 has a first shaft member 41a and a second shaft member 41b.

〈First axis component〉

As shown in FIG. 6A , the first shaft member 41a is inserted into the first through hole 33a of the movable part 3, the inner first through hole 203a of the base 20, and the first through hole 233a of the retaining plate part 23. The inner first through hole 203a and the first through hole 233a can also be regarded as the fixed side first through hole of the fixed part 2.

In addition, in the present embodiment, the base 20 and the retaining plate 23 are separable components, so the first inner through hole 203a and the first through hole 233a are not continuous in the vertical direction. However, in the case where the base 20 and the retaining plate 23 are composed of an inseparable component, the first through hole on the fixed side can also be a continuous through hole.

As shown in FIG. 6A , the first shaft member 41a has a first shaft portion 411a, a second shaft portion 411b, a third shaft portion 411c, and a fourth shaft portion 411d in order from the top.

The first shaft portion 411a is inserted into the small-diameter hole portion 331 of the first through hole 33a. The outer diameter of the first shaft portion 411a is slightly smaller than the inner diameter of the small-diameter hole portion 331 of the first through hole 33a. Therefore, there is a slight gap between the outer circumference of the first shaft portion 411a and the inner circumference of the small-diameter hole portion 331.

The second shaft portion 411b is inserted into the large diameter hole portion 333 of the first through hole 33a and the large diameter hole portion 204a of the inner first through hole 203a. The outer diameter of the second shaft portion 411b is larger than the outer shape of the first shaft portion 411a. In addition, the outer diameter of the second shaft portion 411b is smaller than the inner diameter of the large diameter hole portion 333 and the large diameter hole portion 204a.

There is an annular space between the second shaft portion 411b and the large diameter hole portion 333 of the first through hole 33a and the large diameter hole portion 204a of the inner first through hole 203a. The first spring 42a of the elastic support portion 42 is arranged in the space so as to surround the second shaft portion 411b.

The third shaft portion 411c is inserted into the small-diameter hole portion 204c of the inner first through hole 203a. The third shaft portion 411c is pressed into the small-diameter hole portion 204c. The outer diameter of the third shaft portion 411c is approximately equal to the inner diameter of the small-diameter hole portion 204c. The first shaft member 41a is limited in rotation and axial (up and down) movement based on the engagement between the outer circumference of the third shaft portion 411c and the inner circumference of the small-diameter hole portion 204c.

The fourth shaft portion 411d is inserted into the first through hole 233a of the retaining plate portion 23. The outer diameter of the fourth shaft portion 411d is smaller than the inner diameter of the first through hole 233a.

〈Second axis component〉

As shown in FIG. 6B , the second shaft member 41b has a first shaft portion 412a, a second shaft portion 412b, a third shaft portion 412c, and a fourth shaft portion 412d in order from the top.

The first shaft portion 412a is inserted into the small-diameter hole portion 331 of the third through hole 33c in the movable portion 3. The outer diameter of the first shaft portion 412a is slightly smaller than the inner diameter of the small-diameter hole portion 331. Therefore, there is a slight gap between the outer peripheral surface of the first shaft portion 412a and the inner peripheral surface of the small-diameter hole portion 331.

The second shaft portion 412b is inserted into the large diameter hole portion 333 of the third through hole 33c in the movable portion 3 and the large diameter hole portion 204a of the inner third through hole 203c in the base 20. The outer diameter of the second shaft portion 412b is larger than the outer shape of the first shaft portion 412a. In addition, the outer diameter of the second shaft portion 412b is smaller than the inner diameters of the large diameter hole portion 333 and the large diameter hole portion 204a.

There is an annular space between the second shaft portion 412b and the large diameter hole portion 333 of the third through hole 33c and the large diameter hole portion 204a of the inner third through hole 203c. The third spring 42c of the elastic support portion 42 is arranged in the space so as to surround the second shaft portion 412b.

The third shaft portion 412c is inserted into the small-diameter hole portion 204c of the inner third through hole 203c in the base 20. The third shaft portion 412c is pressed into the small-diameter hole portion 204c. The outer diameter of the third shaft portion 412c is approximately equal to the inner diameter of the small-diameter hole portion 204c. The second shaft member 41b is limited in rotation and axial (up and down) movement based on the engagement between the outer circumference of the third shaft portion 412c and the inner circumference of the small-diameter hole portion 204c.

The fourth shaft portion 412d is inserted into the third through hole 233c of the retaining plate portion 23 in the base 20. The outer diameter of the fourth shaft portion 412d is smaller than the inner diameter of the third through hole 233c.

〈Elastic support part〉

The elastic support portion 42 has a first spring 42a, a second spring 42b, a third spring 42c, and a fourth spring 42d, which are coil springs. In addition, in the following description, the first spring 42a, the second spring 42b, the third spring 42c, and the fourth spring 42d are sometimes collectively referred to as springs 42a to 42d.

〈First Spring〉

As shown in FIG. 6A , the first spring 42a is disposed in a space surrounded by the large-diameter hole portion 204a of the inner first through hole 203a in the base 20 and the large-diameter hole portion 333 of the first through hole 33a in the movable part 3 in a state of surrounding the second shaft portion 411b of the first shaft member 41a.

The upper end of the first spring 42a abuts against the segment 332 of the first through hole 33a in the movable part 3. The lower end of the first spring 42a abuts against the segment 204b of the inner first through hole 203a in the base 20.

The first spring 42a is compressed between the fixed part 2 (the section 204b of the first inner through hole 203a) and the movable part 3 (the section 332 of the first through hole 33a), and applies an upward elastic force to the movable part 3.

〈Second Spring〉

As shown in FIG. 6C , the second spring 42b is disposed in a space surrounded by the large-diameter hole portion 204a of the inner second through hole 203b in the base 20 and the large-diameter hole portion 333 of the second through hole 33b in the movable portion 3.

The upper end of the second spring 42b abuts against the segment 332 of the second through hole 33b in the movable part 3. The lower end of the second spring 42b abuts against the segment 204b of the inner second through hole 203b in the base 20.

The second spring 42b applies an upward elastic force to the movable part 3 when it is compressed between the fixed part 2 (the section 204b of the second inner through hole 203b) and the movable part 3 (the section 332 of the second through hole 33b).

〈Third Spring〉

As shown in FIG. 6B , the third spring 42c is disposed in a space surrounded by the large-diameter hole portion 204a of the inner third through hole 203c in the base 20 and the large-diameter hole portion 333 of the third through hole 33c in the movable portion 3 in a state of surrounding the second shaft portion 412b of the second shaft member 41b.

The upper end of the third spring 42c abuts against the segment 332 of the third through hole 33c in the movable part 3. The lower end of the third spring 42c abuts against the segment 204b of the inner third through hole 203c in the base 20.

The third spring 42c applies an upward elastic force to the movable part 3 when it is compressed between the fixed part 2 (the section 204b of the third inner through hole 203c) and the movable part 3 (the section 332 of the third through hole 33c).

〈Fourth Spring〉

As shown in FIG. 6D , the fourth spring 42d is disposed in a space surrounded by the large-diameter hole portion 204a of the inner fourth through hole 203d in the base 20 and the large-diameter hole portion 333 of the fourth through hole 33d in the movable portion 3.

The upper end of the fourth spring 42d abuts against the segment 332 of the fourth through hole 33d in the movable part 3. The lower end of the fourth spring 42d abuts against the segment 204b of the inner fourth through hole 203d in the base 20.

The fourth spring 42d applies an upward elastic force to the movable part 3 when it is compressed between the fixed part 2 (the section 204b of the fourth inner through hole 203d) and the movable part 3 (the section 332 of the fourth through hole 33d).

Here, the states that the elastic support portion 42 can take are described. First, in the case of this embodiment, in the non-installed state of the socket S, the elastic support portion 42 is formed into a state where it is contracted based on the elastic force of the displacement portion 54 of the guide displacement portion 5 described later that pushes the movable portion 3 downward (referred to as the first state of the elastic support portion 42).

Furthermore, when the socket S is installed and not in use, the elastic support portion 42 is in a state that is more extended than the first state of the elastic support portion 42 (referred to as the second state of the elastic support portion 42). In the second state of the elastic support portion 42, the movable portion 3 is in a state that floats from the fixed portion 2 (referred to as the floating state of the movable portion 3). In the floating state of the movable portion 3, the movable portion 3 can move in the up and down directions relative to the fixed portion 2.

〈Displacement guidance unit〉

In the non-installed state of the socket S, the guide displacement portion 5 moves the movable portion 3 downward as it moves downward. As shown in FIG. 3 and FIG. 11A to FIG. 11C , the guide displacement portion 5 has a guide portion 51 and a displacement portion 54.

〈Guidance Department〉

The guide portion 51 is used to guide the vertical movement of the movable portion 3. The guide portion 51 has a first guide member 52a and a second guide member 53b.

〈First guiding component〉

As shown in FIG. 10 , the first guide member 52a has a shaft portion 521 and a head portion 522. The first guide member 52a is an example of a first guide portion.

The cross-sectional shape of the shaft portion 521 when the shaft portion 521 is cut in a plane perpendicular to the shaft direction (vertical direction) (hereinafter referred to as the cross-sectional shape of the shaft portion 521) is a rounded rectangular shape that is longer in the Y direction.

The shaft portion 521 is inserted through the small diameter hole portion 343 of the first guide hole 34a in the movable portion 3 and the first guide hole 207a of the fixed portion 2 (base 20).

The head 522 is connected to the upper end of the shaft 521. The cross-sectional shape of the head 522 when the head 522 is cut in a plane perpendicular to the shaft direction (up and down direction) (hereinafter referred to as the cross-sectional shape of the head 522) is a rounded rectangular shape that is longer in the Y direction. The outer shape of the cross-sectional shape of the head 522 is larger than the outer shape of the cross-sectional shape of the shaft 521.

The head 522 has a spring retaining portion 523 on the upper surface. In the case of this embodiment, the spring retaining portion 523 is composed of a pair of recesses.

The head portion 522 is disposed in the large diameter hole portion 341 of the first guide hole 34a in the movable portion 3. The lower surface of the head portion 522 is opposite to the step portion 342 of the first guide hole 34a in the vertical direction. The lower surface of the head portion 522 is an example of a press-fit surface that pushes the movable portion 3 downward based on the downward elastic force received from the displacement portion 54.

The first guide member 52a is restricted from moving downward due to the engagement between the lower surface of the head 522 and the segment 342.

〈Second guiding component〉

As shown in FIG. 10 , the second guide member 53b has a shaft portion 531 and a head portion 532. The second guide member 53b is an example of a second guide portion.

The cross-sectional shape of the shaft portion 531 when the shaft portion 531 is cut in a plane perpendicular to the shaft direction (vertical direction) (hereinafter referred to as the cross-sectional shape of the shaft portion 531) is a rounded rectangular shape that is longer in the Y direction.

The shaft portion 531 is inserted through the small diameter hole portion 363 of the second guide hole 36b in the movable portion 3 and the second guide hole 207b of the fixed portion 2 (base 20).

The head 532 is connected to the upper end of the shaft 531. The cross-sectional shape of the head 532 when the head 532 is cut in a plane perpendicular to the shaft direction (up and down direction) (hereinafter referred to as the cross-sectional shape of the head 532) is a rounded rectangular shape that is longer in the Y direction. The outer shape of the cross-sectional shape of the head 532 is larger than the outer shape of the cross-sectional shape of the shaft 531.

The head portion 532 has a spring retaining portion 533 on the upper surface. In the present embodiment, the spring retaining portion 533 is formed by a pair of recesses.

The head portion 532 is disposed in the large diameter hole portion 361 of the second guide hole 36b in the movable portion 3. The lower surface of the head portion 532 is opposite to the step portion 362 of the second guide hole 36b in the vertical direction. The lower surface of the head portion 532 is an example of a press-fit surface that pushes the movable portion 3 downward based on the downward elastic force received from the displacement portion 54.

The second guide member 53b is restricted from moving downward due to the engagement between the lower surface of the head 532 and the segment 362.

〈Displacement Department〉

In the non-installed state of the socket S, the displacement portion 54 moves the movable portion 3 downward by moving the guide portion 51 downward.

The displacement portion 54 has a first push spring 54a and a second push spring 54b.

〈First push spring〉

The first push spring 54a is a coil spring. The first push spring 54a is disposed between the first guide member 52a and the first cover member 25a. In this state, the first push spring 54a constantly applies a downward elastic force to the first guide member 52a.

Specifically, the lower end of the first push spring 54a is held by the spring holding portion 523 of the head portion 522 in the first guide member 52a. In addition, the upper end of the first push spring 54a is held by the cover side spring holding portion (not shown) of the first cover member 25a.

〈Second push spring〉

The second push spring 54b is a coil spring. The second push spring 54b is disposed between the second guide member 53b and the second cover member 25b. In this state, the second push spring 54b constantly applies a downward elastic force to the second guide member 53b.

Specifically, the lower end of the second push spring 54b is held by the spring holding portion 533 of the head portion 532 in the second guide member 53b. In addition, the upper end of the second push spring 54b is held by the cover side spring holding portion (not shown) of the second cover member 25b.

The downward elastic force applied by the displacement part 54 (first push spring 54a and second push spring 54b) to the movable part 3 via the first guide member 52a and the second guide member 53b is always greater than the upward elastic force applied by the elastic support part 42 (springs 42a to 42d) in the support part 4 to the movable part 3.

〈Touch needle〉

The contact pin 6 is inserted into the fixed side holding portion 236 and the movable side holding portion 38 respectively. In the present embodiment, the contact pin 6 is held by the fixed side holding portion 236 in a state where it can move in the up and down directions within a predetermined stroke range.

The contact pin 6 has an upper contact portion 61 that contacts the package-side terminal 801 of the IC package 80 when in use (in use state), and a lower contact portion 62 that contacts the substrate-side terminal 811 of the inspection substrate 81 when in use.

The upper contact portion 61 is formed by the upper end portion of the contact pin 6. In the present embodiment, the upper contact portion 61 is arranged inside the movable side retaining portion 38 of the movable portion 3 regardless of the state of the socket S. In addition, when the socket S is in use, the upper contact portion 61 may also protrude upward from the movable side retaining portion 38 of the movable portion 3.

The lower contact portion 62 is formed by the lower end portion of the contact pin 6. In the case of this embodiment, when the socket S is not installed, the lower contact portion 62 protrudes downward further than the lower surface of the fixing portion 2 (specifically, the partition wall portion 232).

On the other hand, when the socket S is in use, the lower contact portion 62 is located above the lower surface of the fixed portion 2 (specifically, the partition wall portion 232). In this state, the lower contact portion 62 is arranged on the inner side of the fixed side retaining portion 236 of the fixed portion 2.

〈Actions for sockets〉

Below, referring to Figures 11A to 11C, the operation of the socket S is explained.

Figures 11A to 11C show the states of the first guide member 52a and the first push spring 54a of the guide displacement portion 5. The states of the second guide member 53b and the second push spring 54b of the guide displacement portion 5 are the same as the states of the first guide member 52a and the first push spring 54a.

FIG. 11A is a cross-sectional view of the Y1 portion of FIG. 3 in the non-installed state of the socket S. In the non-installed state of the socket S, the inspection substrate 81 is not installed below the fixing portion 2. In the non-installed state of the socket S, the first guide member 52a is located at the lower end of the stroke of the first guide member 52a based on the downward elastic force of the first push spring 54a.

The lower end of the stroke of the first guide member 52a is the position of the first guide member 52a shown in FIG11A. At the lower end of the stroke, the first guide member 52a is restricted from moving downward due to the contact between the lower surface of the head 522 and the segment 342 of the first guide hole 34a in the movable part 3.

In the non-installed state of the socket S, the lower end of the shaft portion 521 of the first guide member 52a protrudes downward further than the lower surface of the fixed portion 2 (specifically, the partition wall portion 232). In the non-installed state of the socket S, the lower end of the contact pin 6 also protrudes downward further than the lower surface of the fixed portion 2 (specifically, the partition wall portion 232). In addition, only one contact pin 6 is shown in Figures 11A to 11C, and the other contact pins 6 are omitted.

Although not shown in the figure, in the non-installed state of the socket S, the springs 42a to 42d of the elastic support portion 42 in the support portion 4 are in a contracted state. In the non-installed state of the socket S, the springs 42a to 42d apply an upward elastic force to the movable portion 3, but the downward elastic force applied to the movable portion 3 by the first push spring 54a and the second push spring 54b is greater than the upward elastic force, so the movable portion 3 is located at the lower end of the stroke shown in FIG. 11A .

In the non-installed state of the socket S, the lower surface of the movable part 3 (specifically, the mounting part 30) abuts against or approaches the upper surface of the partition wall part 232 of the fixed part 2. In the case of this embodiment, in the non-installed state of the socket S, the lower surface of the movable part 3 (specifically, the mounting part 30) abuts against the upper surface of the partition wall part 232 of the fixed part 2.

However, in the non-installed state of the socket S, there may be a gap in the vertical direction between the lower surface of the movable part 3 (specifically, the mounting part 30) and the upper surface of the partition wall part 232 of the fixed part 2. The vertical dimension of the gap is preferably smaller than the outer diameter of the upper end of the contact pin 6 (upper contact part 61). The size of the gap can be appropriately determined by, for example, working on the structure of the movable part 3, the fixed part 2 and/or the guide displacement part 5.

Next, FIG. 11B is a cross-sectional view of the Y1 portion of FIG. 3 in the configuration state of the socket S. In the configuration state of the socket S, the inspection substrate 81 is configured below the fixed portion 2. However, in the configuration state of the socket S, the IC package 80 placed on the mounting portion 30 of the movable portion 3 is not pressed downward by the covering member 9 (see FIG. 11C) or the like. In addition, the state in which the inspection substrate 81 is configured below the fixed portion 2 and the IC package 80 is not placed on the mounting portion 30 also belongs to the configuration state of the socket S.

In the configuration state of the socket S, the first guide member 52a is located at the upper end of the stroke. In the configuration state of the socket S, the first push spring 54a is contracted between the first cover member 25a and the first guide member 52a.

Furthermore, in the configuration state of the socket S, the contact pin 6 is also located at the upper end of the stroke. The reason is that when the socket S changes from the non-configuration state to the configuration state, the lower ends of the first guide member 52a and the contact pin 6 are pushed upward by the inspection substrate 81 configured below the fixing portion 2.

When the socket S changes from the non-installed state to the installed state, when the first guide member 52a moves upward, the movable part 3 moves upward to the upper end of the stroke based on the upward elastic force of the springs 42a to 42d of the elastic support part 42 in the support part 4. In the installed state of the socket S, the movable part 3 can move up and down within a predetermined stroke range relative to the fixed part 2.

In the configuration state of the socket S, there is a gap in the vertical direction between the lower surface of the movable part 3 (specifically, the mounting part 30) and the upper surface of the partition wall part 232 of the fixed part 2. The gap has a predetermined length in the vertical direction. In the case of this embodiment, in the configuration state of the socket S, the upper end portion (upper side contact portion 61) of the contact pin 6 is arranged on the inner side of the movable side retaining portion 38 of the movable part 3.

Next, FIG. 11C is a cross-sectional view of the Y1 portion of FIG. 3 in the use state of the socket S. In the use state of the socket S, the IC package 80 placed on the mounting portion 30 of the movable portion 3 is pressed downward by the covering member 9.

In the use state of the socket S, the movable part 3 is located at the lower end of the stroke. In the use state of the socket S, the lower surface of the movable part 3 (specifically, the mounting part 30) abuts against the upper surface of the partition wall part 232 of the fixed part 2. The positions of the first guide member 52a and the contact pin 6 in the use state of the socket S are the same as the positions of the first guide member 52a and the contact pin 6 in the configuration state of the socket S shown in FIG. 11B.

The above description can also be appropriately used in the description of the action of the second guide member 53b and the second push spring 54b.

〈Effects〉

According to the present embodiment as described above, when the socket S is not in the installed state, damage to the upper end portion (upper contact portion 61) of the contact pin 6 can be suppressed.

That is, in the case of the socket S of the present embodiment, in the non-installed state of the socket S, the lower surface of the movable part 3 (specifically, the mounting part 30) is in contact with or close to the upper surface of the partition wall part 232 of the fixed part 2. Therefore, when the contact pin 6 is moved upward from the state where the upper end of the contact pin 6 is disengaged downward from the movable side holding part 38 by moving the contact pin 6 downward, the upper end of the contact pin 6 does not enter between the lower surface of the movable part 3 (specifically, the mounting part 30) and the upper surface of the partition wall part 232 of the fixed part 2. As a result, damage to the upper end of the contact pin 6 can be suppressed.

Furthermore, not only the damage to the upper end of the contact pin 6 can be suppressed, but also the damage to the contact pin 6 itself and the inspection substrate 81 can be suppressed. That is, the contact pin 6 may unexpectedly protrude from the lower end of the retaining plate 23 due to the contact pin 6 entering between the lower surface of the movable part 3 and the upper surface of the partition wall 232 of the fixed part 2, so that the contact pin 6 itself and the inspection substrate 81 may be damaged. In the case of the socket S of this embodiment, since the contact pin 6 does not enter between the lower surface of the movable part 3 and the upper surface of the partition wall 232 of the fixed part 2, the damage to the contact pin 6 itself and the inspection substrate 81 can also be suppressed.

All disclosures in the description, drawings, and abstract of the international application PCT/JP2019/044952 filed on November 15, 2019 are used in this application.

[Possibility of industrial application]

The socket of the present invention can be used as a socket for connecting various electrical components.

1: Socket body

2: Fixed part

3: Movable parts

5: Guide displacement unit

20: Base

20b: Second wall portion

20d: Fourth wall

21a: The first section

22b: The second section

23: Maintain the board

25: Cover

25a: First cover member

25b: Second cover member

30: Loading section

31: Frame

31b: Second wall section

31c: Third wall section

31d: Fourth wall section

34a: First guide hole

35a: First guide extension part

36b: Second guide hole

37b: Second guide extension

38: Movable side retaining part

51: Guidance Department

52a: First guide component

53b: Second guide component

54: Displacement unit

54a: First push spring

54b: Second push spring

71b: Second positioning pin

71c: Third positioning pin

207a: First guide hole

207b: Second guide hole

211a,221b: upper side section

212a, 222b: Lower side section

230: Upper side retaining plate

231: Lower side retaining plate

236: Fixed side retaining part

237:Holding hole

301: Perforation

341,361: Large diameter hole

342,362: Section

343,363: Small diameter hole

S: socket

Y1: Partial

Claims (10)

A socket that electrically connects a first electrical component to a second electrical component, the socket having: The contact pin contacts the first electrical component and the second electrical component when in use; and Socket body; The aforementioned socket body is equipped with: The fixing portion is configured to separate the upper first electrical component configuration side from the lower second electrical component configuration side; The movable part is formed to carry the aforementioned first electrical component, and is elastically supported above the aforementioned fixed part so as to be movable in the up and down directions; The holding portion penetrates the aforementioned fixed portion and the aforementioned movable portion in the aforementioned up-down direction and holds the aforementioned contact pin; and The guide part is inserted through the fixed part and the movable part so as to be movable in the vertical direction, and in a non-arranged state where the second electrical component is not arranged below the fixed part, the guide part moves downward as the guide part moves downward. The socket as described in Request Item 1 is further equipped with: The displacement portion is disposed between the upper end of the guide portion and a portion of the fixed portion disposed above the guide portion, and in the non-disposed state, the lower surface of the movable portion is brought into contact with or close to the fixed portion by moving the guide portion downward. A socket as described in claim 2, wherein, The guide portion comprises: a press-fit surface for pressing the movable portion downward based on the downward elastic force received from the displacement portion; and a retaining portion for retaining the displacement portion. A socket as described in claim 2 or 3, wherein, The movable part has: a rectangular frame portion configured to surround the first electrical component when in use; and a movable side guide hole provided in the frame portion; and The aforementioned fixed portion has the aforementioned movable side guide hole and the aforementioned fixed side guide hole opposite to each other in the aforementioned up-down direction; The guide portion is inserted into the movable side guide hole and the fixed side guide hole. A socket as described in claim 4, wherein, The movable side guide hole comprises a movable side first guide hole and a movable side second guide hole arranged opposite to each other in a first direction orthogonal to the vertical direction in the frame portion; The aforementioned fixed side guide hole comprises a first fixed side guide hole and a second fixed side guide hole respectively opposite to the first movable side guide hole and the second movable side guide hole in the aforementioned up-down direction; The guide portion includes: a first guide portion inserted through the first guide hole on the movable side and the first guide hole on the fixed side; and a second guide portion inserted through the second guide hole on the movable side and the second guide hole on the fixed side. The socket as described in Request Item 4 is further equipped with: The supporting part is disposed between the frame part and the fixed part, and elastically supports the movable part on the fixed part; and The supporting portion is provided in a portion different from the displacement portion in a first plane orthogonal to the vertical direction. A socket as described in claim 6, wherein, The aforementioned supporting parts are respectively arranged at the four corners of the aforementioned frame. A socket as described in claim 6, wherein, The aforementioned displacement part constantly applies a downward elastic force to the aforementioned movable part. The elastic force of the displacement portion is greater than the upward elastic force imparted by the support portion to the movable portion. A socket as described in any one of claims 1 to 3, wherein a portion of the aforementioned fixing portion is a cover portion fixed to the aforementioned fixing portion by a locking part in a detachable manner. A socket as described in claim 9, wherein the cover prevents the movable portion from escaping upward.

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