socket

Abstract

A socket that electrically connects a first electrical component of a press surface of a press member and a second electrical component disposed below the first electrical component, the socket comprising: a socket main body having a placement surface on which the first electrical component is placed; and a holding portion provided on the socket main body, the holding portion holding the first electrical component on the socket main body by engaging with the first electrical component in a pressed state in which the first electrical component is pressed by the press member, the holding portion disengaging from the first electrical component in a case where the press member moves away from a position corresponding to the pressed state by a prescribed distance.

Description

TECHNICAL FIELD

[0001] The present application relates to a socket used in performance testing of electrical components such as semiconductor devices (hereinafter referred to as "IC packages") and the like. BACKGROUND

[0002] Conventionally, as a socket for housing electrical components such as IC packages and the like in order to electrically connect them with the outside, there is known, for example, an IC socket (hereinafter simply referred to as "socket") (for example, refer to Patent Document 1). The socket is used in order to check the electrical characteristics of the electrical components when performing outgoing inspection of the electrical components.

[0003] In a state of use, the socket is arranged between an IC package that is an inspection object and an inspection substrate. Also, in order to ensure electrical connection of the IC package with the inspection substrate, the IC package is pressed against the inspection substrate by a pressing member.

[0004] PRIOR ART DOCUMENTS

[0005] PATENT DOCUMENTS

[0006] Patent Document 1: Japanese Patent Application Publication No. 2019-196937 SUMMARY

[0007] PROBLEMS TO BE SOLVED BY THE INVENTION

[0008] In the case of using the socket described above, when the IC package is removed from the socket, there is a possibility that the IC package has been adhered to the pressing surface of the pressing member, and work of peeling the IC package from the pressing surface is required. Such work is troublesome, and becomes a cause of low work efficiency in performance testing.

[0009] An object of the present application is to provide a socket capable of improving work efficiency.

[0010] SOLUTION TO PROBLEM

[0011] One mode of the socket of the present application is a socket that electrically connects a first electrical component whose upper surface is pressed by a pressing member and a second electrical component arranged below the first electrical component, the socket comprising:

[0012] a socket main body having a placement surface on which the first electrical component is placed; and

[0013] a holding portion provided on the socket main body, which holds the first electrical component on the socket main body by engaging with the first electrical component in a pressed state in which the first electrical component is pressed by the pressing member, and which releases the engagement with the first electrical component in a case where the pressing member is moved away by a prescribed distance from a position corresponding to the pressed state.

[0014] EFFECT OF THE INVENTION

[0015] According to the present application, work efficiency can be improved. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 is a plan view of the socket of the embodiment corresponding to the non-holding state.

[0017] Figure 2 is a perspective view of the socket corresponding to the non-holding state.

[0018] Figure 3A is a perspective view of the socket omitting the standing wall portion corresponding to the non-holding state.

[0019] Figure 3B is a perspective view of the socket omitting the standing wall portion corresponding to the holding state.

[0020] Figure 4 is an enlarged view of the X1 portion of Figure 3A

[0021] Figure 5 is a bottom view of the standing wall portion and the holding mechanism corresponding to the X2 portion of Figure 1

[0022] Figure 6 is a perspective view of only the holding mechanism.

[0023] Figure 7 is a perspective view of the holding mechanism viewed from a different angle from Figure 6

[0024] Figure 8 is a plan view of the socket and the IC package corresponding to the non-holding state.

[0025] Figure 9 is a plan view of the socket and the IC package corresponding to the holding state.

[0026] Figure 10 is an A-A sectional view of the socket of Figure 2 corresponding to the non-holding state.

[0027] Figure 11 is an A-A sectional view of the socket of Figure 2 corresponding to the holding state. DETAILED DESCRIPTION

[0028] Hereinafter, an embodiment of the present application will be explained in detail based on the drawings. In addition, the socket of the embodiment described later is one example of the socket of the present application, and the present application is not limited to the embodiment.

[0029] [EMBODIMENT]

[0030] Hereinafter, the present application will be explained in detail with reference to the drawings.​​​Figures 1-11 The socket S of the present embodiment will be described.

[0031] As shown in Figure 1 and Figure 2 , in the present embodiment, description is made using orthogonal coordinate system (X, Y, Z). The orthogonal coordinate system (X, Y, Z) shown in the following description is the same as the orthogonal coordinate system (X, Y, Z) shown in other drawings.

[0032] The X direction in the orthogonal coordinate system (X, Y, Z) corresponds to the lateral direction of the socket S. Also, the Y direction in the orthogonal coordinate system (X, Y, Z) corresponds to the longitudinal direction of the socket S. Also, the Z direction in the orthogonal coordinate system (X, Y, Z) corresponds to the height direction of the socket S. The lateral direction of the socket S and the longitudinal direction of the socket S can be reversed.

[0033] Also, the Z direction in the orthogonal coordinate system (X, Y, Z) also corresponds to the up-down direction of the socket S. The + side of the Z direction corresponds to the upper side of the socket S, and the - side of the Z direction corresponds to the lower side of the socket S.

[0034] Also, in the following description, in the plan view shape of the socket S and each element constituting the socket S, the corner on the - side of the X direction and the - side of the Y direction is referred to as the first corner, the corner on the - side of the X direction and the + side of the Y direction is referred to as the second corner, the corner on the + side of the X direction and the + side of the Y direction is referred to as the third corner, and the corner on the + side of the X direction and the - side of the Y direction is referred to as the fourth corner.

[0035] <Socket>

[0036] When electric components such as an IC package 6 (refer to Figure 8 and Figure 9 ) are inspected, the socket S is used to electrically connect the IC package 6 and an inspection substrate 7 (refer to Figure 11 ).

[0037] In the present embodiment, the IC package 6 corresponds to an example of the first electric component. Also, the inspection substrate 7 corresponds to an example of the second electric component. Further, sometimes the inspection substrate 7 corresponds to an example of the first electric component, and the IC package 6 corresponds to an example of the second electric component.

[0038] A plurality of package-side terminals are provided on the lower surface of the IC package 6 in a matrix shape. The package-side terminals are, for example, solder balls. Also, a plurality of substrate-side terminals are provided on the upper surface of the inspection substrate 7 in a matrix shape.

[0039] In the following description, the state of the socket S used in the inspection ( Figure 9 and Figure 11The state shown in FIG. 1 (and the state shown in FIG. 2) is also referred to as a use state of the socket S. In the use state of the socket S, the socket S is provided on the inspection substrate 7 in a state in which the IC package 6 is housed.

[0040] In the use state of the socket S, the IC package 6 is pressed downward by the pressing member 81 (refer to FIG. 1). Therefore, the use state of the socket S is also a pressed state in which the IC package 6 is pressed by the pressing member 81. Figure 11

[0041] In addition, the state in which the socket S and the IC package 6 are not pressed downward by the pressing member 81 (the state shown in FIG. 3 and the state shown in FIG. 4) is also referred to as a non-use state, a non-pressed state of the socket S. Figure 8 Figure 10

[0042] In the present embodiment, the pressing member 81 is provided on a pressing device 8 (refer to FIG. 1) provided above the IC package 6 at the time of performance test. That is, the pressing member 81 is provided on a member different from the socket S. However, the pressing member can also be provided on the socket. Figure 11

[0043] The socket S has a socket main body 1, a holding mechanism 5, and a contact pin (not shown) which are arranged on the inspection substrate 7.

[0044] In addition, the socket S can be various sockets. Although illustration is omitted, the socket S can also have a cover member which is provided on the socket main body 1 in an openable and closable manner and covers the housing portion of the socket main body from above in the use state of the socket. In addition, the socket S can also have a pressing member which is supported by the cover member and presses the IC package 6 downward in the use state of the socket.

[0045] <Socket Main Body>

[0046] The socket main body 1 has a rectangular outer shape, for example, in a plan view shown in FIG. 1. Such a socket main body 1 has a side wall portion 2, a plate portion 3, and a standing wall portion 4. Figure 1

[0047] <Side Wall Portion>

[0048] The side wall portion 2 constitutes the outer shape of the socket main body 1. The side wall portion 2 has a first wall portion 20a, a second wall portion 20b, a third wall portion 20c, and a fourth wall portion 20d which are connected in a rectangular frame shape.

[0049] The first wall portion 20a and the third wall portion 20c extend in the X direction in a state in which they are parallel to each other. The third wall portion 20c is provided on the Y direction + side of the first wall portion 20a.

[0050] ​​​​​The second wall portion 20b and the fourth wall portion 20d extend in the Y direction in a state of being parallel to each other. The fourth wall portion 20d is provided on the X direction + side of the second wall portion 20b.

[0051] Although detailed explanation is omitted, the side wall portion 2 is composed of a plurality of members. Such a side wall portion 2 supports the plate portion 3 described later.

[0052] <PLATE>

[0053] The plate portion 3 is a rectangular plate shape, and is provided in a space surrounded by the side wall portion 2. The plate portion 3 is supported by the side wall portion 2.

[0054] The plate portion 3 has a fixed portion 31 and a movable portion 32.

[0055] <FIXED PORTION>

[0056] The fixed portion 31 is a rectangular plate shape, and is fixed to the side wall portion 2 by a fixing member such as a fastening member. Therefore, the fixed portion 31 cannot move with respect to the side wall portion 2.

[0057] The fixed portion 31 is composed of a plurality of plate-shaped members provided in opposition in the up-down direction. Specifically, the fixed portion 31 has, in order from the top, a first plate 301, a second plate 302, a third plate 303, and a fourth plate 304.

[0058] The first plate 301, the second plate 302, the third plate 303, and the fourth plate 304 are connected in a state of being spaced apart in the up-down direction by a fastening member such as a bolt. In addition, the number of plates constituting the fixed portion 31 is not limited to the case of the present embodiment. The fixed portion 31 can also be composed of one plate.

[0059] <MOVABLE PORTION>

[0060] The movable portion 32 is a rectangular plate shape, and is provided above the first plate 301 of the fixed portion 31 in a state of being in opposition to the fixed portion 31. The movable portion 32 is supported by the fixed portion 31 in a state of being able to move in the up-down direction with respect to the fixed portion 31.

[0061] Specifically, the movable portion 32 is guided in the up-down direction by a plurality of guide members (not shown). The guide members are fixed to the fixed portion 31 (specifically, the fourth plate 304), and are inserted into the fixed portion 31 (specifically, the first plate 301, the second plate 302, and the third plate 303) and the movable portion 32.

[0062] A plurality of elastic members (not shown) such as coil springs are provided between the movable portion 32 and the fixed portion 31. The elastic members are in a free state in a non-use state (non-pressing state) of the socket. When the IC package 6 is pressed downward by the pressing member 81, the elastic members contract, and the movable portion 32 moves downward.

[0063] The elastic member exerts an upward elastic force on the movable portion 32 in the use state (pressed state) of the socket. When the pressing of the pressing member 81 against the IC package 6 is released, the elastic member is elongated. As a result, the movable portion 32 moves upward.

[0064] <Detail structure of the plate portion>

[0065] The plate portion 3 has a first region 3a (a region inside a rectangle indicated by a double-dot chain line LI in FIG. 1) and a second region 3b (a region outside the rectangle indicated by the double-dot chain line LI in FIG. 1). Figure 3A Figure 3A

[0066] The first region 3a is a rectangular region including the central portion in plan view. The first region 3a can be regarded as a three-dimensional region.

[0067] The first region 3a constitutes a contact portion. The first region 3a has a plurality of through-holes (not shown) that pass through the plate portion 3 in the up-down direction. A contact pin (not shown) is respectively held in each of the plurality of through-holes.

[0068] An upper surface of the first region 3a (contact portion) constitutes a placement surface 33. In the use state, the IC package 6 is placed on the placement surface 33.

[0069] In the use state of the socket, the contact portion electrically connects the IC package 6 placed on the placement surface 33 and the inspection substrate 7 (refer to FIG. 2) placed below the contact portion via the contact pin. Figure 11

[0070] The second region 3b is a rectangular frame-shaped region that surrounds the first region 3a in plan view. Specifically, in the plate portion 3, the second region 3b is a region outside the rectangle indicated by the double-dot chain line LI in FIG. 1. The second region 3b can be regarded as a three-dimensional region. Figure 3A

[0071] The plate portion 3 (movable portion 32) has a disposition surface 305 on the upper surface of the first corner portion, the second corner portion, the third corner portion, and the fourth corner portion of the second region 3b, and the holding member 51 of the holding mechanism 5 described later is disposed on the disposition surface 305.

[0072] The plate portion 3 has trigger holding portions 306a, 306b that hold the trigger members 53a, 53b of the holding mechanism 5 described later. In the present embodiment, the trigger holding portions 306a, 306b are respectively provided in the first corner portion, the second corner portion, the third corner portion, and the fourth corner portion of the second region 3b.

[0073] The trigger holding portion 306a is provided at a position adjacent in the X direction to the disposition surface 305. The trigger holding portion 306b is provided at a position adjacent in the Y direction to the disposition surface 305. ​​​​

[0074] Hereinafter, the structure of the trigger holding portion 306a (hereinafter, simply referred to as "trigger holding portion 306a") provided at the first corner portion of the second region 3b will be described with reference to Figure 3A , Figure 10 and Figure 11 . The following description can be appropriately cited for the other trigger holding portions 306a, 306b.

[0075] The trigger holding portion 306a has, in order from the top, a through-hole 321 provided on the movable portion 32, a through-hole 301a provided on the first plate 301, a through-hole 302a provided on the second plate 302, a pair of through-holes 303a, 303b provided on the third plate 303, and a pair of recesses 304a, 304b provided on the fourth plate 304.

[0076] The through-hole 321, the through-hole 301a, and the through-hole 302a are each an elongated hole extending in the X direction (the Y direction in the case of the trigger holding portion 306b). The long diameter of the through-hole 321, the through-hole 301a, and the through-hole 302a is parallel to the X direction (the Y direction in the case of the trigger holding portion 306b).

[0077] In addition, the short diameter of the through-hole 321, the through-hole 301a, and the through-hole 302a is parallel to the Y direction (the X direction in the case of the trigger holding portion 306b). The through-hole 321, the through-hole 301a, and the through-hole 302a are opposed in the vertical direction.

[0078] In the third plate 303, a pair of through-holes 303a, 303b are provided adjacent to each other in the X direction (the Y direction in the case of the trigger holding portion 306b) at positions opposed to the through-hole 321, the through-hole 301a, and the through-hole 302a in the vertical direction.

[0079] In the fourth plate 304, the recesses 304a, 304b are provided adjacent to each other in the X direction (the Y direction in the case of the trigger holding portion 306b) at positions opposed to the through-holes 303a, 303b in the vertical direction.

[0080] The recess 304a is opposed to the through-hole 303a in the vertical direction. The recess 304b is opposed to the through-hole 303b in the vertical direction.

[0081] <upright wall portion>

[0082] The upright wall portion 4 is a rectangular frame shape and is provided on the upper surface of the second region 3b of the plate portion 3 (the movable portion 32). The upright wall portion 4 is provided in a state of protruding upward from the upper surface of the plate portion 3 (the movable portion 32).

[0083] The standing wall portion 4 has a housing portion 41 that houses a holding mechanism 5 described later at the first corner portion, the second corner portion, the third corner portion, and the fourth corner portion. Figure 5 The structure of the first corner portion of the standing wall portion 4 is shown. The structures of the second corner portion, the third corner portion, and the fourth corner portion of the standing wall portion 4 are the same as the structure of the first corner portion of the standing wall portion 4 shown. Figure 5

[0084] The housing portion 41 has a first housing portion 411 that houses a holding portion 51 of the holding mechanism 5 (refer to Figure 5 ), second housing portions 412a, 412b that house trigger members 53a, 53b of the holding mechanism 5 (refer to Figure 5 ), and third housing portions 413a, 413b that house first elastic members 52a, 52b of the holding mechanism 5 (refer to Figure 5 ).

[0085] The first housing portion 411 restricts upward movement of the holding portion 51. The third housing portions 413a, 413b each have a receiving surface 414a, 414b that abuts against a second end portion 522 of the first elastic member 52a, 52b.

[0086] The standing wall portion 4 has through holes 415a, 415b through which upper side shaft portions 532 of the trigger members 53a, 53b of the holding mechanism 5 described later are inserted. In the present embodiment, the through holes 415a, 415b are provided at two positions in the first corner portion, the second corner portion, the third corner portion, and the fourth corner portion of the standing wall portion 4, respectively.

[0087] The through hole 415a is provided in the standing wall portion 4 at a position that opposes the trigger holding portion 306a of the plate portion 3 in the up-down direction. The through hole 415b is provided in the standing wall portion 4 at a position that opposes the trigger holding portion 306b of the plate portion 3 in the up-down direction.

[0088] <HOLDING MECHANISM>

[0089] The holding mechanism 5 is provided on the socket main body 1. The holding mechanism 5 is in a holding state in which the IC package 6 is held on the socket main body 1 by engaging with the IC package 6 in a state in which the IC package 6 is pressed by the pressing member 81, and is in a non-holding state in which the engagement with the IC package 6 is released in a case in which the pressing member 81 is separated by a prescribed distance from a position corresponding to the pressing state.

[0090] In the following description, the holding state refers to a state in which the IC package 6 is held on the socket main body 1 by the holding mechanism 5. In addition, the non-holding state refers to a state in which the IC package 6 is not held on the socket main body 1 by the holding mechanism 5.

[0091] ​Hereinafter, the state of the holding mechanism 5 and the state of each element of the holding mechanism 5 corresponding to the state of the holding mechanism 5 will be simply referred to as a holding state. In addition, the state of the holding mechanism 5 and the state of each element of the holding mechanism 5 corresponding to the state of the holding mechanism 5 will be simply referred to as a non-holding state.

[0092] In the present embodiment, the holding mechanisms 5 are provided at the first, second, third, and fourth corners of the second region 3b of the upper surface of the plate portion 3 (movable portion 32), respectively. In addition, the number and arrangement of the holding mechanisms are not limited to those of the present embodiment.

[0093] The holding mechanism can be one as long as it is a structure capable of holding the IC package 6 on the socket main body 1. Preferably, as in the present embodiment, at least two positions (four positions in the present embodiment) opposed in a direction parallel to the placement surface 33 on the upper surface of the plate portion 3 are provided with the holding mechanism.

[0094] Hereinafter, the holding mechanism 5 provided at the first corner of the plate portion 3 will be described, and the structures of the holding mechanisms 5 provided at the second, third, and fourth corners of the plate portion 3 are the same as that of the holding mechanism 5 provided at the first corner of the plate portion 3.

[0095] The holding mechanism 5 has a holding member 51, first elastic members 52a, 52b, trigger members 53a, 53b, and second elastic members 54a, 54b.

[0096] <Holding Member>

[0097] The holding member 51 corresponds to one example of a holding portion and is a substantially rectangular plate. The holding member 51 is arranged on the arrangement surface 305 of the plate portion 3. The holding member 51 is movable between a first position corresponding to the non-holding state and a second position corresponding to the holding state.

[0098] The first position of the holding member 51 is the position of the holding member 51 shown in FIG. 6. In addition, the second position of the holding member 51 is the position of the holding member 51 shown in FIG. 7. Figure 3A Figure 3B The first position of the holding member 51 is the position of the holding member 51 shown in FIG. 6. In addition, the second position of the holding member 51 is the position of the holding member 51 shown in FIG. 7.

[0099] When the holding member 51 moves from the first position to the second position, it moves in the direction indicated by an arrow Al (also referred to as a first moving direction) shown in FIG. 6. The first moving direction is a direction parallel to the placement surface 33 and is a direction approaching the center line O1 of the socket S. Figure 3A

[0100] ​​On the other hand, the holding member 51 moves in a direction opposite to the first moving direction (also referred to as a second moving direction) when moving from the second position to the first position. The second moving direction is a direction parallel to the placement surface 33 and a direction away from the center line O1 of the socket S.

[0101] The holding member 51 has an inner side corner portion 510 opposite to the corner portion of the IC package 6, and an outer side corner portion 511 on the opposite side of the inner side corner portion 510.

[0102] In addition, the holding member 51 has a first edge 512 and a second edge 513 orthogonal to the first edge 512. The first edge 512 and the second edge 513 are connected via the inner side corner portion 510.

[0103] The holding member 51 has an engaging portion 514 capable of engaging with the IC package 6. In the present embodiment, the engaging portion 514 is provided on the inner side corner portion 510 of the holding member 51. Specifically, the engaging portion 514 has a first engaging surface 515 and a second engaging surface 516.

[0104] The first engaging surface 515 is a surface parallel to the side surface of the corner portion of the IC package 6. In the present embodiment, the first engaging surface 515 is an L-shaped surface along the side surface of the IC package 6. Specifically, the first engaging surface 515 is composed of a first surface parallel to the up-down direction and extending in the first direction (X direction in the present embodiment), and a second surface parallel to the up-down direction and extending in the second direction (Y direction in the present embodiment) orthogonal to the first direction.

[0105] Such a first engaging surface 515 pushes the corner portion of the IC package 6 in a direction parallel to the placement surface 33 in the holding state. In the holding state, the first engaging surface 515 engages with the corner portion of the IC package 6 in the X direction and the Y direction. Therefore, in the holding state, the first engaging surface 515 restricts the movement of the IC package 6 in the direction parallel to the placement surface 33.

[0106] The second engaging surface 516 is connected to the upper end portion of the first engaging surface 515 and is an L-shaped surface along the upper surface of the corner portion of the IC package 6. Specifically, the second engaging surface 516 is composed of a first surface extending in the first direction (X direction in the present embodiment) and downward, and a second surface extending in the second direction (Y direction in the present embodiment) orthogonal to the first direction and downward.

[0107] In the holding state, such a second engaging surface 516 covers the upper surface of the corner portion of the IC package 6. It can be in contact with the upper surface of the corner portion of the IC package 6 in the holding state, or it can not be in contact.

[0108] In the holding state, the second engagement surface 516 opposes the upper surface of the corner portion of the IC package 6 in the Z direction. In the holding state, such a second engagement surface 516 restricts movement of the IC package 6 in the up-down direction.

[0109] The holding member 51 has an elastic member arrangement portion 517 in which the first elastic members 52a, 52b are arranged. In the present embodiment, the elastic member arrangement portion 517 is provided on the outer corner portion 511.

[0110] Specifically, the elastic member arrangement portion 517 is composed of a pair of cutout portions 518a, 518b provided on the outer corner portion 511. The bottoms of the pair of cutout portions 518a, 518b respectively abut against the first end portions 521 of the first elastic members 52a, 52b.

[0111] The bottoms of the pair of cutout portions 518a, 518b oppose the receiving surfaces 414a, 414b of the third receiving portions 413a, 413b of the aforementioned standing wall portion 4.

[0112] The holding member 51 has a first cam surface 519a. In the present embodiment, the first cam surface 519a is provided on the first side 512. The first cam surface 519a is a partial cylindrical surface that is farther from the first side 512 the closer it is to the lower side. The first cam surface 519a opposes a cam surface 531c of a trigger member 53a described later in the up-down direction.

[0113] The holding member 51 has a second cam surface 519b. In the present embodiment, the second cam surface 519b is provided on the second side 513. The second cam surface 519b is a partial cylindrical surface that is farther from the second side 513 the closer it is to the lower side. The second cam surface 519b opposes a cam surface 531c of a trigger member 53b described later in the up-down direction.

[0114] <First Elastic Member>

[0115] The first elastic members 52a, 52b are each a coil spring provided on the elastic member arrangement portion 517 of the holding member 51.

[0116] The first elastic members 52a, 52b each have a first end portion 521 and a second end portion 522. The first end portion 521 of the first elastic member 52a abuts against the bottom of the cutout portion 518a of the holding member 51. The first end portion 521 of the first elastic member 52b abuts against the bottom of the cutout portion 518b of the holding member 51.

[0117] The second end portion 522 of the first elastic member 52b abuts against the receiving surface 414a of the third receiving portion 413a of the standing wall portion 4. The second end portion 522 of the first elastic member 52b abuts against the receiving surface 414b of the third receiving portion 413b of the standing wall portion 4.

[0118] The first elastic members 52a, 52b each contract in the non-holding state. Thus, in the non-holding state, the first elastic members 52a, 52b each apply an elastic force to the holding member 51 in the direction indicated by an arrow Al (first movement direction). On the other hand, the first elastic members 52a, 52b each are in a free state in the holding state. Figure 3A

[0119] The number of the first elastic members is not limited to the case of the present embodiment. The number of the first elastic members can be one or more than three.

[0120] <Trigger member>

[0121] The trigger members 53a, 53b are each provided on the trigger holding portions 306a, 306b of the plate portion 3 in a state of being movable in the up-down direction.

[0122] The trigger members 53a, 53b each have a cam portion 531, an upper shaft portion 532, and lower shaft portions 533a, 533b.

[0123] The cam portion 531 has an upper surface 531a, a lower surface 531b, and a cam surface 531c. The cam surface 531c is provided at a first end portion of the cam portion 531 and is an inclined surface connecting the upper surface 531a and the lower surface 531b. The first end portion of the cam portion 531 is an end portion close to the holding member 51.

[0124] The cam surface 531c is inclined in such a manner that the closer to the lower side, the farther from the center of the cam portion 531. The cam surface 531c of the trigger member 53a opposes the first cam surface 519a of the holding member 51 in the up-down direction. In addition, the cam surface 531c of the trigger member 53b opposes the second cam surface 519b of the holding member 51 in the up-down direction.

[0125] The upper shaft portion 532 corresponds to an example of the protruding portion and is provided on the upper surface 531a of the cam portion 531. The upper shaft portion 532 is in a cylindrical shape extending upward from the upper surface 531a.

[0126] The upper shaft portion 532 of the trigger member 53a is inserted into the through-hole 415a of the standing wall portion 4. In the non-holding state, the upper end portion of the upper shaft portion 532 of the trigger member 53a protrudes upward from the through-hole 415a of the standing wall portion 4.

[0127] The upper shaft portion 532 of the trigger member 53b is inserted into the through-hole 415b of the standing wall portion 4. In the non-holding state, the upper end portion of the upper shaft portion 532 of the trigger member 53b protrudes upward from the through-hole 415b of the standing wall portion 4.

[0128] ​The lower side shaft portions 533a, 533b are provided on the lower surface 531b of the cam portion 531, respectively. The lower side shaft portions 533a, 533b are each a cylindrical shape extending downward from the lower surface 531b. The lower side shaft portions 533a, 533b are each inserted into the second elastic members 54a, 54b.

[0129] In addition, the number of trigger members is not limited to the case of the present embodiment. The number of trigger members can be one or more than three.

[0130] <Second elastic member>

[0131] The second elastic members 54a, 54b each correspond to an example of the first urging member and are each a coil spring. The second elastic members 54a, 54b each have a first end portion 541 and a second end portion 542. The first end portion 541 is an upper end portion. The second end portion 542 is a lower end portion.

[0132] The second elastic member 54a is provided in a manner of surrounding the lower side shaft portion 533a of the trigger members 53a, 53b. The second elastic member 54b is provided in a manner of surrounding the lower side shaft portion 533b of the trigger members 53a, 53b.

[0133] The first end portion 541 of the second elastic members 54a, 54b abuts against the lower surface 531b of the cam portion 531. The second end portion 542 of the second elastic members 54a, 54b abuts against the bottom of the recesses 304a, 304b in the trigger holding portion 306a.

[0134] Each of the second elastic members 54a, 54b is contracted by a prescribed amount in the non-holding state. Thus, each of the second elastic members 54a, 54b exerts an upward elastic force on the cam portion 531 in the non-holding state.

[0135] Based on the elastic force, the cam surface 531c of the cam portion 531 in the trigger member 53a pushes the first cam surface 519a of the holding member 51 upward. In addition, based on the elastic force, the cam surface 531c of the cam portion 531 in the trigger member 53b pushes the second cam surface 519b of the holding member 51 upward.

[0136] Each of the second elastic members 54a, 54b is contracted to a greater extent in the holding state than in the non-holding state. Thus, each of the second elastic members 54a, 54b exerts a greater elastic force on the cam portion 531 in the holding state than in the non-holding state.

[0137] In addition, the number of second elastic members is not limited to the case of the present embodiment. The number of second elastic members can be one or more than three.

[0138] <Summary of trigger member>

[0139] In the trigger member 53a, 53b having the above structure, in the non-holding state, the front end portion of the upper shaft portion 532 protrudes upward more than the upper surface of the standing wall portion 4. In addition, in the non-holding state, the cam surface 531c of the cam portion 531 in the trigger member 53a pushes the first cam surface 519a of the holding member 51 upward.

[0140] In addition, in the non-holding state, the cam surface 531c of the cam portion 531 in the trigger member 53b pushes the second cam surface 519b of the holding member 51 upward.

[0141] Here, the force with which the cam surface 531c of the cam portion 531 in the trigger member 53a pushes the first cam surface 519a of the holding member 51 upward is set as a first pushing force. In addition, the force with which the cam surface 531c of the cam portion 531 in the trigger member 53b pushes the second cam surface 519b of the holding member 51 upward is set as a second pushing force.

[0142] In the non-holding state, the holding member 51 is pushed by the first elastic member 52a, 52b in the direction (first moving direction) indicated by the arrow Al. However, in the non-holding state, the movement of the holding member 51 in the first moving direction is restricted by the component of the first pushing force in the direction parallel to the placement surface 33 and the component of the second pushing force in the direction parallel to the placement surface 33. Figure 3A

[0143] <Operation of the socket>

[0144] Hereinafter, the operation of the socket S (holding mechanism 5) will be described with reference to Figure 3A , Figure 3B and Figures 8-11 .

[0145] Figure 3A , Figure 8 and Figure 10 are diagrams showing the state of the socket corresponding to the non-holding state. In addition, Figure 3B , Figure 9 and Figure 11 are diagrams showing the state of the socket corresponding to the holding state.

[0146] First, as shown in Figure 8 , the IC package 6 is placed on the placement surface 33 of the board portion 3. In this state, the IC package 6 is not pressed by the pressing member 81. The pressing member 81 is disposed above the IC package 6. This state is referred to as the first state of the socket and the pressing member (hereinafter simply referred to as the "first state").

[0147] ​When the pressing member 81 approaches the socket S in the first state from above, at a predetermined position (hereinafter referred to as the "first predetermined position"), a portion of the pressing member 81 abuts against the upper end of the upper shaft portion 532 of the trigger members 53a and 53b in the holding mechanism 5. This state is referred to as the second state of the socket and the pressing member (hereinafter referred to as the "second state").

[0148] Furthermore, the positions of the triggering components 53a and 53b in the first and second states ( Figure 10 The position shown is an example of the first position of the trigger part. In this embodiment, the first position of the trigger part is the upper end of the vertical travel of the trigger members 53a and 53b.

[0149] When the pressing member 81 moves further downward from the second state, the triggering members 53a and 53b move downward together with the pressing member 81. At this time, the triggering members 53a and 53b move downward against the elastic force of the second elastic members 54a and 54b. As a result, the second elastic members 54a and 54b contract.

[0150] When the triggering members 53a and 53b move downward, the cam surface 531c of the triggering members 53a and 53b also moves downward. That is, the cam surface 531c of the triggering members 53a and 53b moves in a direction away from the first cam surface 519a and the second cam surface 519b of the holding member 51.

[0151] Therefore, the retaining member 51, based on the elastic force of the first elastic members 52a and 52b, moves towards... Figure 3A Move in the direction indicated by arrow A1 (first direction of movement). Furthermore, as... Figure 3B and Figure 9 As shown, the retaining member 51 moves in the first moving direction until the engaging portion 514 (specifically, the first engaging surface 515) engages with the corner of the IC package 6. This state is referred to as the third state of the socket and the pressing member (hereinafter referred to as the "third state").

[0152] When the pressing component 81 moves to the lower end, the trigger components 53a and 53b are at the lower end of their vertical travel (see reference). Figure 11 The positions of triggering components 53a and 53b in the third state ( Figure 11 The position shown is an example of the second position of the trigger portion. In this embodiment, the second position of the trigger portion is the lower end of the vertical travel of the trigger members 53a and 53b.

[0153] Then, the holding mechanism 5 is in a holding state. Furthermore, with the pressing member 81 moved to the lower end, the IC package 6 is in a pressing state where it is pressed downward by the pressing member 81.

[0154] In the holding state, there is a gap 55 in the vertical direction having a size of a prescribed distance L between the cam surfaces 531c of the trigger members 53a, 53b and the first and second cam surfaces 519a, 519b of the holding member 51.

[0155] In addition, in the holding state, the trigger members 53a, 53b are pressed upward by the second elastic members 54a, 54b.

[0156] Next, the operation of the holding mechanism 5 when the pressing member 81 is moved upward from the pressing state to release the pressing state will be described.

[0157] With the movement of the pressing member 81 upward, the trigger members 53a, 53b are moved upward based on the upward elastic force from the second elastic members 54a, 54b. At this time, due to the presence of the gap 55, the cam surfaces 531c of the trigger members 53a, 53b do not immediately come into abutment with the first and second cam surfaces 519a, 519b of the holding member 51.

[0158] In the present embodiment, the length of the gap 55 in the vertical direction is greater than the movement amount of the pressing member 81 from the start of the movement of the pressing member 81 upward from the pressing state until the pressing surface (lower surface) of the pressing member 81 comes away from the pressed surface (upper surface) of the IC package 6.

[0159] Therefore, at the time when the pressing surface (lower surface) of the pressing member 81 comes away from the pressed surface (upper surface) of the IC package 6, the IC package 6 is held on the socket main body 1 by the holding mechanism 5. Thus, the pressing surface (lower surface) of the pressing member 81 reliably comes away from the pressed surface (upper surface) of the IC package 6.

[0160] After that, when the pressing member 81 is moved upward from the pressing state (holding state) by a prescribed distance, the gap 55 disappears, and the cam surfaces 531c of the trigger members 53a, 53b come into abutment with the first and second cam surfaces 519a, 519b of the holding member 51. The prescribed distance is equal to the length of the gap 55 in the vertical direction.

[0161] Furthermore, when the pressing member 81 is further moved upward, the holding member 51 is moved in a second movement direction opposite to the direction (first movement direction) indicated by an arrow Al in FIG. 1 based on the components in the direction parallel to the placement surface 33 of the first and second pushing forces that are the pushing forces exerted by the cam surfaces 531c of the trigger members 53a, 53b on the first and second cam surfaces 519a, 519b of the holding member 51. Figure 3A

[0162] ​As a result, the engagement of the engagement portion 514 (specifically, the first engagement surface 515) of the holding member 51 with the corner portion of the IC package 6 is released, and the holding state is released. In this way, in a case where the pressing member 81 is moved away from the position corresponding to the pressing state by a prescribed distance, the engagement of the engagement portion 514 of the holding member 51 with the IC package 6 is released, and the holding state is released.

[0163] <Effects>

[0164] As described above, in the socket S of the present embodiment, the IC package 6 is held on the socket main body 1 by the holding mechanism 5 when the pressing surface (lower surface) of the pressing member 81 is moved away from the pressed surface (upper surface) of the IC package 6. Thus, the pressing surface (lower surface) of the pressing member 81 is reliably moved away from the pressed surface (upper surface) of the IC package 6. Therefore, the operation of peeling the IC package 6 from the pressing surface of the pressing member 81 is not required. As a result, the operation efficiency of the performance test can be improved.

[0165] In addition, in the socket S of the present embodiment, the holding mechanism 5 has two trigger members 53a, 53b. Unless both of the trigger members 53a, 53b are moved downward, such a holding mechanism 5 is not shifted from the non-holding state to the holding state. That is, even if only one of the two trigger members 53a, 53b is moved downward, the holding mechanism is not activated. Such a structure contributes to suppression of the erroneous activation of the holding mechanism due to the erroneous operation.

[0166] The disclosure of the specification, drawings, and abstract of Japanese Patent Application No. 2020-7599 filed on January 21, 2020 is incorporated herein in its entirety.

[0167] Industrial Applicability

[0168] The present application can be applied to a socket for connecting various electrical components to each other.

[0169] Explanation of Reference Signs

[0170] S Socket

[0171] 1 Socket main body

[0172] 2 Side wall portion

[0173] 20a First wall portion

[0174] 20b Second wall portion

[0175] 20c Third wall portion

[0176] 20d Fourth wall portion

[0177] 3 Plate portion

[0178] 3a first region

[0179] 3b second region

[0180] 31 fixed portion

[0181] 301 first plate

[0182] 301a through-hole

[0183] 302 second plate

[0184] 302a through-hole

[0185] 303 third plate

[0186] 303a, 303b through-hole

[0187] 304 fourth plate

[0188] 304a, 304b recess

[0189] 305 arrangement surface

[0190] 306a, 306b trigger holding portion

[0191] 32 movable portion

[0192] 321 through-hole

[0193] 33 placement surface

[0194] 4 standing wall portion

[0195] 41 housing portion

[0196] 411 first housing portion

[0197] 412a, 412b second housing portion

[0198] 413a, 413b third housing portion

[0199] 414a, 414b receiving surface

[0200] 415a, 415b through-hole

[0201] 5 holding mechanism

[0202] 51 holding member

[0203] 510 inner corner portion

[0204] 511 outer corner portion

[0205] 512 first side

[0206] 513 second side

[0207] 514 engaging portion

[0208] 515 first engaging surface

[0209] 516 second engaging surface

[0210] 517 elastic member arrangement portion

[0211] 518a, 518b cutout portion

[0212] 519a first cam surface

[0213] 519b second cam surface

[0214] 52a, 52b first elastic member

[0215] 521 first end portion

[0216] 522 second end portion

[0217] 53a, 53b trigger member

[0218] 531 cam portion

[0219] 531a upper surface

[0220] 531b lower surface

[0221] 531c cam surface

[0222] 532 upper side shaft portion

[0223] 533a, 533b lower side shaft portion

[0224] 54a, 54b second elastic member

[0225] 541 first end portion

[0226] 542 second end portion

[0227] 55 gap

[0228] 6 IC package

[0229] 7 inspection substrate

[0230] 8 pressing device

[0231] 81 pressing member

Claims

1. A socket comprising: a first electrical component whose upper surface is pressed by a vertically movable pressing member; and a second electrical component disposed below the first electrical component; the socket comprising: The socket body has a mounting surface for placing the first electrical component; A retaining part is provided on the socket body. When the first electrical component is pressed by the pressing member, the retaining part engages with the first electrical component to hold the first electrical component on the socket body. When the pressing member moves away from the position corresponding to the pressing state by a predetermined distance, the engagement with the first electrical component is released. The triggering part, when the pressing member moves downward, moves from a first position to a second position based on the pressing force of the pressing member, thereby engaging the retaining part with the first electrical component; and when the pressing member moves upward, moves from the second position to the first position based on the force, thereby disengaging the retaining part from the first electrical component. The force-applying component always applies the force to the triggering part; as well as An elastic member applies a spring force to the retaining portion to move the retaining portion toward the center of the first electrical component. The triggering unit includes: A protrusion extending vertically, projecting upwards from the socket body, and bearing the pressing force at its upper end; and A cam portion, connected to the lower end of the protrusion, is capable of contacting or disengaging from the retaining portion as the trigger portion moves up and down based on the pressing pressure and the applied force. When the cam portion disengages from the retaining portion, it does not restrict the movement of the retaining portion towards the center based on the elastic force; when it contacts the retaining portion, it restricts the movement of the retaining portion towards the center based on the elastic force. With the trigger portion in the second position, the cam portion is positioned further below the retaining portion, with a gap between it and the retaining portion. The length of the gap in the vertical direction is greater than the amount of movement of the pressing member from the moment the pressing member begins to move upward until it leaves the upper surface of the first electrical component.

2. The socket as claimed in claim 1, wherein, The retaining part has a locking surface parallel to the side of the first electrical component. In the pressed state, the engaging surface pushes the first electrical component in a direction parallel to the mounting surface.

3. The socket as described in claim 2, wherein, In the socket body, at least one pair of retaining portions are provided facing each other across the mounting surface; In the pressed state, the first electrical component is held by the engaging surfaces of the pair of retaining portions.

4. The socket as claimed in claim 3, wherein, The retaining portion is positioned at the four corners corresponding to the four corners of the rectangular mounting surface. In the pressed state, the four corners of the first electrical component are pushed in a direction approaching the center. The engaging surface has a first surface and a second surface that are orthogonal to each other. In the pressed state, the first surface and the second surface abut against a pair of side surfaces of the first electrical component connected at the four corners of the first electrical component.

5. The socket as claimed in claim 1, wherein, The retaining portion moves in a direction parallel to the mounting surface and away from the first electrical component, based on its contact with the cam portion.

6. The socket as claimed in claim 1, wherein, It has at least two of the aforementioned triggering parts. When each of the triggering parts is pressed by the pressing member and moved from the first position to the second position, the retaining part engages with the first electrical component.

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