connector

Abstract

The present application provides a technical means capable of inhibiting impedance mismatch of a plug unit of a connector. A plug unit (97) of a connector (100) is provided with a plurality of contact pieces (7) and a housing (6) having a base portion (63) provided with a plurality of through holes (67) into which the plurality of contact pieces (7) are inserted, and a head portion (62) protruding from the base portion (63) and provided with a plurality of slits (66) that hold portions of the plurality of contact pieces (7) exposed to one side of the head portion (62) from the through holes (67). Moreover, the portions of the contact pieces (7) inserted into the through holes (67) and the portions held by the slits (66) form a straight line.

Description

TECHNICAL FIELD

[0001] The present application relates to a connector having a floating mechanism. BACKGROUND

[0002] Among connectors that are respectively mounted to a circuit board and an extension board and mediate signal transmission between the boards, there is a connector that mounts a floating mechanism that absorbs errors in mounting positions of a connector on the circuit board side and a connector on the extension board side. As a document that discloses a technology related to such a connector, there is Patent Literature 1.

[0003] The substrate connecting connector of Patent Literature 1 is composed of a first connector of a receptacle type and a second connector of a plug type that is fitted into the first connector. The first connector of this document 1 has a fixed housing, a floating housing, and a plurality of contact pieces that are erected between these housings. The contact pieces of the first connector have a first spring portion and a second spring portion that extend in an inverted V shape, and a reverse bending portion that is sandwiched between the upper ends thereof, and a partition member composed of an electrically insulating synthetic resin material is disposed between the reverse bending portions of the adjacent contact pieces. According to the technology of Patent Literature 1, by the action of the partition member disposed between the reverse bending portions, the difference in impedance between the reverse bending portions and the portions that extend in a straight line other than this is narrowed, and thus the impedance of the entire contact piece is homogenized. Therefore, according to Patent Literature, impedance mismatching can be suppressed.

[0004] PRIOR ART DOCUMENTS

[0005] PATENT LITERATURE

[0006] Patent Literature 1 Japanese Patent Application Publication No. 2013-045739 SUMMARY

[0007] PROBLEMS TO BE SOLVED BY THE INVENTION

[0008] However, the technology of Patent Literature 1 has a structure that suppresses impedance mismatching on one side of the connector of the receptacle type, but does not have the above-described structure on one side of the connector of the plug type. Therefore, impedance mismatching of the connector of the plug type cannot be suppressed.

[0009] The present application was made in view of the above-described problems, and aims to provide a technical means that can suppress impedance mismatching of a plug unit of a connector.

[0010] MEANS FOR SOLVING THE PROBLEMS

[0011] To solve the above problems, a connector according to an embodiment of the present application includes a socket unit mounted to a first substrate, and a plug unit mounted to a second substrate and connected to the socket unit, the socket unit and the plug unit being connected to electrically connect the first substrate and the second substrate, the connector being characterized in that the plug unit includes a plurality of contact pieces, and a housing having a base portion provided with a plurality of through holes into which the plurality of contact pieces are inserted, and a head portion protruding from the base portion and provided with a plurality of slits that hold portions of the plurality of contact pieces that protrude from the through holes toward one side of the head portion, the portions of the contact pieces that are inserted into the through holes and the portions held by the slits forming a straight line.

[0012] In this way, the upper end and the lower end of the through hole in the base portion can be provided with two holding portions that hold the straight line portions of the contact pieces, and a gap can be formed between the peripheral wall of the portion between the two holding portions and the straight line portions.

[0013] In addition, the contact pieces can have straight line portions that extend in a straight line along the through holes and the slits, and terminal portions that are bent and extend outward from one end of the straight line portions and are connected to the substrate.

[0014] In addition, the plurality of contact pieces can form two rows on the left side and the right side.

[0015] In addition, the through hole can have four peripheral walls that oppose each other in the left-right direction and the front-rear direction, and a groove can be provided in the portions of the peripheral walls other than the two holding portions.

[0016] In addition, the slits can have peripheral walls that are connected to the peripheral walls of the through holes, and a groove can be provided in the peripheral walls of the slits.

[0017] In addition, the groove of the through hole and the groove of the slit can be recessed toward the same side.

[0018] In addition, the groove of the through hole and the groove of the slit can have the same depth.

[0019] Effects of the Invention

[0020] This invention provides a connector comprising a socket unit mounted on a first substrate and a plug unit mounted on a second substrate and connected to the socket unit. The socket unit and the plug unit are connected to electrically connect the first substrate and the second substrate. The plug unit comprises: a plurality of contacts; and a housing. The housing has a base with a plurality of through holes for insertion of the plurality of contacts, and a head. The head protrudes from the base and has a plurality of slits that hold portions of the plurality of contacts protruding from the through holes toward the head. The portion of the contact inserted into the through hole and the portion held by the slits form a straight line. Therefore, the impedance difference between the straight portion and the other bent portions of the contact is reduced. Thus, impedance mismatch in the connector can be suppressed. Attached Figure Description

[0021] Figure 1 (A) is a perspective view of the socket unit 93 of the connector 100 according to one embodiment of the present invention. Figure 1 (B) is a perspective view of the plug unit 97 of connector 100.

[0022] Figure 2 Viewed from the opposite side Figure 1 A perspective view of socket unit 93 in (A).

[0023] Figure 3 This is a cross-sectional view of the structure formed by fitting the socket unit 93 and the plug unit 97 together.

[0024] Figure 4 (A) and Figure 4 Diagram (B) shows the floating motion of the socket unit 93 in the X direction. Figure 4 The diagram in (C) shows the floating shape of the socket unit 93 in the Y direction.

[0025] Figure 5 The diagram in (A) is a view of socket unit 93 from the +Z side. Figure 5 The middle (B) diagram is a view of the socket unit 93 from the +Y side. Figure 5 The middle (C) diagram is a view of the socket unit 93 from the -Z side. Figure 5 The middle (D) diagram is a view of the socket unit 93 from the -X side.

[0026] Figure 6 yes Figure 5 Sectional view along line A-A in (B).

[0027] Figure 7 (A) is a perspective view of the mounting housing 1 of the socket unit 93. Figure 7 (B) is Figure 7A-A line sectional view of the middle (A).

[0028] Figure 8 (B) is a perspective view of the floating housing 2 of the socket unit 93, Figure 8 (B) is Figure 8 A-A line sectional view of the middle (A).

[0029] Figure 9 is a perspective view of the contact 3-j of the socket unit 93.

[0030] Figure 10 is a perspective view of the anchor plate 4 of the socket unit 93.

[0031] Figure 11 is a perspective view of the conductive resin member 5 of the socket unit 93.

[0032] Figure 12 (A) is a view of the plug unit 97 viewed from the +Z side, Figure 12 (B) is a view of the plug unit 97 viewed from the +Y side, Figure 12 (C) is a view of the plug unit 97 viewed from the -Z side, Figure 12 (D) is a view of the plug unit 97 viewed from the -X side.

[0033] Figure 13 (A) is Figure 12 (B) is a D-D line sectional view of the middle (A), Figure 13 (B) is Figure 13 (A) is an enlarged view in a G frame of the middle (A).

[0034] Figure 14 is Figure 12 (B) is an enlarged view in a F frame of the middle (A).

[0035] Figure 15 (A) is Figure 12 (A) is a sectional view of an H-H line section of the middle (A), Figure 15 (B) is Figure 15 (A) is an enlarged view in a J frame of the middle (A).

[0036] Figure 16 is Figure 12 (C) is an enlarged view in a K frame of the middle (A).

[0037] Figure 17 (A) is a perspective view of the housing 6 of the plug unit 97, Figure 17 (B) is Figure 17 A-A line sectional view of the middle (A).

[0038] Figure 18 is a perspective view of the contact 7-j of the plug unit 97.

[0039] Figure 19 is a perspective view of the anchor plate 8 of the plug unit 97. DETAILED DESCRIPTION

[0040] Hereinafter, a connector 100 as one embodiment of the present application will be described with reference to the drawings. The connector 100 is provided with a receptacle unit 93 and a plug unit 97. The receptacle unit 93 is mounted to an electronic substrate as a first substrate. The plug unit 97 is mounted to an extension substrate as a second substrate. The head 62 of the plug unit 97 is fitted into the socket 20 of the receptacle unit 93, and by connecting the receptacle unit 93 and the plug unit 97, K (K is, for example, 144) contact pieces 7-j (j = 1 ~ K) of the plug unit 97 and K contact pieces 3-j (j = 1 ~ K) of the receptacle unit 93 are electrically connected respectively, and further, high-speed differential transmission of a maximum of Gbps based on PAM (Pulse Amplitude Modulation) is enabled.

[0041] In the following description, the direction of fitting of the plug unit 97 with respect to the receptacle unit 93 will be appropriately referred to as the Z direction, one direction orthogonal to the Z direction will be appropriately referred to as the X direction, and a direction orthogonal to both the Z direction and the Y direction will be appropriately referred to as the Y direction. In addition, there are cases where the +Z side is referred to as the upper side, the -Z side is referred to as the lower side, the +X side is referred to as the front side, the -X side is referred to as the rear side, the +Y side is referred to as the left side, and the -Y side is referred to as the right side. In addition, the contact pieces 3-j (j = 1 ~ K) of the receptacle unit 93 and the contact pieces 7-j (j = 1 ~ K) of the plug unit 97 for the ground of differential transmission are marked with the letter (G), and the contact pieces 3-j and the contact pieces 7-j for signals are marked with the letter (S), to distinguish between the two.

[0042] As shown in (A) of FIG. 1, Figure 1 (A), Figure 2 , Figure 5 (A), Figure 5 (B), Figure 5 (C), and Figure 5 (D), the receptacle unit 93 has a fixed housing 1, a floating housing 2, contact pieces 3-j (j = 1 ~ K), an anchor plate 4, and a conductive resin member 5.

[0043] As shown in (A) of FIG. 1, Figure 7 The fixed housing 1 has an opening portion 10 that penetrates the fixed housing 1 from top to bottom, and first wall portions, i.e., wall portions 11 and 12, that surround the opening portion 10. The wall portion 11 opposes the wall portion 12 in the X direction with the opening portion 10 interposed therebetween, and the wall portion 12 opposes the wall portion 11 in the Y direction with the opening portion 10 interposed therebetween.

[0044] The upper and left and right edge portions of the outer side surface of the front and rear wall portions 11 of the fixed housing 1 project outward as protrusions 111. A center plate 112 extending upward and downward is present in the center of the outer side surface of the wall portion 11. A positioning protrusion 113 is provided in the center of the lower surface of the wall portion 11. This positioning protrusion 113 is inserted into a positioning hole of an electronic substrate when the socket unit 93 is fixed to the electronic substrate.

[0045] Supports 121 for mounting of the anchor plate 4 are provided in the end portions of the front and rear sides in the outer side surfaces of the left and right wall portions 12 of the fixed housing 1. The lower end side between the two supports 121 in the outer side surfaces of the wall portions 12 projects outward as a protrusion 122.

[0046] Rows of K / 2 slits 17-j aligned front and rear are provided in the lower side of the inner side surfaces of the left and right wall portions 12 of the fixed housing 1. A curved portion 14 curved inward in the shape of a quarter of a circle is present in the upper side of the inner side surfaces of the left and right wall portions 12, and an inner edge portion 15 parallel to the inner side surface is present thereon.

[0047] As shown in Figure 8 (A) and Figure 8 The floating housing 2 has a socket 20 into which the head portion 62 of the floating housing 2 is inserted, and a second wall portion, i.e., wall portions 21 and 22, which constitute the inner peripheral surface of the socket 20. The wall portions 21 oppose each other in the X direction across the socket 20, and the wall portions 22 oppose each other in the Y direction across the socket 20. The floating housing 2 has a size that is accommodated in the opening portion 10 of the fixed housing 1.

[0048] The upper and left and right edge portions of the outer side surface of the front and rear wall portions 21 of the floating housing 2 project outward as protrusions 211. The left and right lower ends of the protrusions 211 project outward.

[0049] The inner side surface of the left and right wall portions 22 of the floating housing 2 is a stepped surface in which the lower side projects with respect to the upper side. Rows of K / 2 slits 26-j aligned front and rear are provided in the lower side of the inner side surfaces of the left and right wall portions 22 of the floating housing 2. A curved portion 24 curved outward in the shape of a quarter of a circle is present in the upper side of the outer side surfaces of the left and right wall portions 22, and an outer edge portion 25 parallel to the outer side surface is present thereon.

[0050] As shown in Figure 5 (A), Figure 5 (C), and Figure 8 (B), a bottom portion 23 forming the bottom of the socket 20 is provided between the lower end portions of the front and rear wall portions 21 of the floating housing 2. The bottom portion 23 extends in a straight line front and rear. As shown in Figure 8As shown in (B), there is a through hole 220 between the bottom 23 and the inner surfaces of the walls 22 on the left and right sides. The through hole 220 extends from the bottom surface toward the insertion port 20. A conductive resin component 5 is provided on the bottom surface of the floating housing 2. A groove 230 for fixing the conductive resin component 5 is provided on the bottom surface of the bottom 23 of the floating housing 2.

[0051] Contact elements 3-j (j = 1 to K) form columns of K / 2 contact elements 3-j on each side. For example... Figure 9 As shown, the contact 3-j has a terminal portion 31 extending in a left-right direction at one end, a contact portion 32 extending in a up-down direction at the other end, a support piece portion 36 connected to the terminal portion 31, a support piece portion 37 connected to the contact portion 32, and an elastically deformable portion 38 sandwiched between the two support pieces 36 and 37.

[0052] The front end of the contact portion 32 is bent in a U-shape. Outwardly protruding claw portions 361 and 371 are present on the sides of the support plate portion 36 and the support plate portion 37.

[0053] The elastic deformation section 38 has a semi-circular flexible section 380, two straight sections 381 and 382 extending downward from both ends of the flexible section 380, a connecting section 386 that bends at the lower end of the straight section 381 toward the support plate section 36 and connects to the upper end of the support plate section 36, and a connecting section 387 that bends at the lower end of the straight section 382 toward the support plate section 37 and connects to the lower edge of the support plate section 37. The elastic deformation section 38 is capable of elastic deformation in the front, back, left, and right directions.

[0054] like Figure 10 As shown, the anchor plate 4 has a main body 41 and a protrusion 42 that protrudes downward from the lower edge of the main body 41. A convex portion 411 extending laterally is present on the upper edge of the side surface of the main body 41. Below the convex portion 411 on the side surface of the main body 41, a claw portion 412 protrudes outward. An elongated hole 421 is provided in the protrusion 42.

[0055] like Figure 11 As shown, the conductive resin component 5 has a lower plate portion 51 that protrudes outwards from the four corners of the cuboid in the left and right directions, a protrusion 53 that protrudes upwards from the center of the upper surface of the lower plate portion 51, and a column portion 59 that rises upwards from the outwardly protruding front end of the lower plate portion 51. The left and right widths of the protrusion 53 are approximately the same as the left and right widths of the groove 230 in the bottom 23 of the floating housing 2.

[0056] The fixed housing 1, the floating housing 2, the contact element 3-j (j = 1 to K), the anchor plate 4, and the conductive resin component 5 are assembled as follows.

[0057] like Figure 5 (A)Figure 5 In (C) and Figure 6 As shown in (C), the floating case 2 is housed in the opening portion 10 of the fixed case 1, two rows of the contact 3-j are provided between the floating case 2 and the fixed case 1, the conductive resin member 5 is installed in the groove 230 of the bottom portion 23 of the floating case 2, and the anchor plate 4 is installed in the bracket 121 of the fixed case 1.

[0058] Here, in Figure 5 In (C), the number of the conductive resin members 5 is six for the purpose of showing the groove 230, but actually, the conductive resin members 5 are installed on the entire surface of the lower surface of the bottom portion 23.

[0059] As shown in Figure 5 As shown in (A), the movable space 101 for allowing the floating case 2 to move forward and backward is provided between the wall portion 11 of the fixed case 1 and the wall portion 21 of the floating case 2 in the opening portion 10, and the movable space 102 for allowing the floating case 2 to move left and right is provided between the wall portion 12 of the fixed case 1 and the wall portion 22 of the floating case 2. The contact 3-j (j = 1 ~ K) arranges two contact 3-j (G) and two contact 3-j (S) as one group in the order in which two contacts for signal are housed between two contacts for ground.

[0060] As shown in Figure 6 The contact 3-j protrudes the contact portion 32 into the socket 20 via the through hole 220, and the elastically deformed portion 38 is housed in the movable space 102 and is pressed into the fixed case 1 and the floating case 2 from the lower side. The support piece portion 36 of the contact 3-j is housed in the slit 17-j and is supported. The support piece portion 37 of the contact 3-j is housed in the slit 26-j and is supported.

[0061] The connecting portion 387 of the contact 3-j is connected to the lower surface of the floating case 2. The terminal portion 31 of the contact 3-j is exposed to the lower side of the lower surface of the fixed case 1. The terminal portion 31 of the contact 3-j is soldered to the pad of the electronic substrate and is fixed. There is no separation by an electrically insulating member between the adjacent contacts 3-j, and only an air layer exists.

[0062] As shown in Figure 6 As shown in (A), the gap 120 is provided between the inner edge portion 15 of the fixed case 1 and the outer edge portion 25 of the floating case 2. The curved portion 14 of the wall portion 12 and the curved portion 24 of the wall portion 22 are curved in imitation of the flexible portion 380 of the elastically deformed portion 38 on the lower side of the gap 120 in the movable space 102.

[0063] The protrusions 53 of the conductive resin member 5 are inserted into the grooves 230 of the bottom 23 of the floating housing 2. The two column portions 59 on the left side of the conductive resin member 5 are in contact with the two contact pieces 3-j (G) on the left side. The two column portions 59 on the right side of the conductive resin member 5 are in contact with the two contact pieces 3-j (G) on the right side. The four contact pieces 3-j (G) are electrically connected via the conductive resin member 5. The protruding portions 42 of the anchor plate 4 mounted on the bracket 121 extend to the lower side of the lower surface of the fixed housing 1.

[0064] As shown in Figure 1 (B), Figure 12 (A), Figure 12 (B), Figure 12 (C) and Figure 12 (D), the plug unit 97 has a housing 6, contact pieces 7-j (j = 1 ~ K) and an anchor plate 8.

[0065] As shown in Figure 17 (A) and Figure 17 (B), the housing 6 has a head portion 62 and a base portion 63.

[0066] The head portion 62 protrudes downward from the lower surface of the base portion 63. A row of K / 2 slits 66-j is provided on the outer side of the head portion 62 on the left and right sides, respectively.

[0067] The left side slit 66-j forms a cross-sectional Ko-shaped profile surrounded by a right peripheral wall, a front peripheral wall and a rear peripheral wall. The right side of the left side slit 66-j is open, and the front peripheral wall and the rear peripheral wall are opposite to each other. The right side slit 66-j forms a cross-sectional Ko-shaped profile surrounded by a left peripheral wall, a front peripheral wall and a rear peripheral wall. The left side of the right side slit 66-j is open, and the front peripheral wall and the rear peripheral wall are opposite to each other.

[0068] As shown in Figure 17 (B), grooves 661 are provided on the three peripheral walls of the left and right side slits 66-j. The groove 661 of the front peripheral wall is recessed toward the front side, the groove 661 of the rear peripheral wall is recessed toward the rear side, the groove 661 of the left peripheral wall is recessed toward the left side, and the groove 661 of the right peripheral wall is recessed toward the right side.

[0069] A positioning protrusion 613 is provided in the center of the front and rear end portions in the upper surface of the base portion 63. The positioning protrusion 613 is inserted into the positioning hole of the expansion substrate when the plug unit 97 is fixed to the expansion substrate. The upper edge of the front and rear side surfaces of the base portion 63 expands outward as an outer edge portion 631. A bracket 632 for mounting the anchor plate 8 is provided on the outer edge portion 631.

[0070] K / 2 through holes 67-j are arranged in a row on the left and right sides of the center in the Y direction of the base 63. The through holes 67-j penetrate the base 63 vertically. The through hole 67-j on the left communicates with the slit 66-j on the left, and the through hole 67-j on the right communicates with the slit 66-j on the right.

[0071] The through holes 67-j on the left and right sides form a rectangular cross-sectional shape enclosed by the left peripheral wall, right peripheral wall, front peripheral wall, and rear peripheral wall. The left peripheral wall and right peripheral wall, as well as the front peripheral wall and rear peripheral wall, of the through holes 67-j on the left and right sides are respectively opposite each other. The peripheral wall of the through hole 67-j is connected to the peripheral wall of the slit 66-j.

[0072] like Figure 15 As shown in (A), two retaining parts 679 and 678 that are necked inward are provided at the upper and lower ends of the through hole 67-j on the left and right sides, respectively.

[0073] like Figure 17 As shown in (B), grooves 672 are provided on the four peripheral walls of the left and right through holes 67-j, excluding the two retaining portions 679 and 678. The groove 672 on the front peripheral wall is recessed to the front, the groove 672 on the rear peripheral wall is recessed to the rear, the groove 672 on the left peripheral wall is recessed to the left, and the groove 672 on the right peripheral wall is recessed to the right. The orientation and depth of the groove 672 in the through hole 67-j are the same as the orientation and depth of the groove 661 in the slit 66-j.

[0074] Contact elements 7-j (j = 1 to K) form rows of K / 2 contact elements 7-j on each side. For example... Figure 18 As shown, the contact member 7-j has a straight portion 72 extending in the up-down direction at one end, a terminal portion 79 extending in the left-right direction at the other end, and a connecting portion 80 sandwiched between them.

[0075] A claw portion 720 protrudes outward at a position on the side of the straight portion 72 where it separates from the lower end upwards. The upper end of the straight portion 72 is slightly thicker than the portion below it. In addition, an elongated hole 721 is provided in this thicker portion.

[0076] like Figure 19 As shown, the anchor plate 8 has two rectangular plates 81, a mounting portion 40 between the lower ends of the two rectangular plates 81, and a protrusion 83 protruding upward from the upper edge of the two rectangular plates 81. Claw portions 812 protruding outward are present on the sides of the two rectangular plates 81.

[0077] The housing 6, the contact pieces 7-j (j = 1 to K), and the anchor plate 8 are combined as follows. The contact pieces 7-j (j = 1 to K) are pressed into the housing 6 from the upper side. The straight portions 72 of the contact pieces 7-j are inserted into the through holes 67-j, the front end sides thereof penetrate the through holes 67-j, and are held by the slits 66-j. The terminal portions 79 of the contact pieces 7-j are exposed to the upper side of the upper surface of the housing 6. The terminal portions 79 of the contact pieces 7-j are fixed by being soldered to pads of the extension substrate.

[0078] The anchor plate 8 is attached to the stand 632 of the housing 6. The protruding portion 83 of the anchor plate 8 extends to the upper side of the upper end of the housing 6. The straight portions 72 of the contact pieces 7-j extend linearly along the through holes 67-j and the slits 66-j. The claws 720 of the straight portions 72 are supported by the lower holding portions 678, and the upper end portions of the straight portions 72, which are thick in width, are supported by the upper holding portions 679.

[0079] As shown in Figure 3 , if the head portion 62 of the plug unit 97 is fitted into the socket 20 of the socket unit 93, the straight portions 72 of the contact pieces 7-j of the plug unit 97 come into contact with the contact portions 32 of the contact pieces 3-j of the socket unit 93.

[0080] As shown in Figure 4 (A) and Figure 4 (B), in the case where the relative positions of the plug unit 97 and the socket unit 93 in the front-rear direction are shifted, the contact pieces 3-j are twisted in such a manner that the straight portions 381 and the straight portions 382 of one side are inclined to the opposite side, so that the socket unit 93 moves to the front side or the rear side within the opening portion 10. Thus, the shift of the positions in the front-rear direction is eliminated.

[0081] Further, as shown in Figure 4 (C), in the case where the relative positions of the plug unit 97 and the socket unit 93 in the left-right direction are shifted, the contact pieces 3-j on the left and the right are twisted in such a manner that the straight portions 381 and the straight portions 382 of one side are expanded and the straight portions 381 and the straight portions 382 of the other side are narrowed, so that the socket unit 93 moves to the left side or the right side within the opening portion 10.

[0082] The above is a detailed description of the structure of the present embodiment. The plug unit 97 of the connector 100 of the present embodiment is provided with a plurality of contact pieces 7-j (j = 1 ~ K) and a housing 6 having a base portion 63 provided with a plurality of through holes 67-j (j = 1 ~ K) into which the plurality of contact pieces 7-j (j = 1 ~ K) are inserted, and a head portion 62 protruding from the base portion 63 and provided with a plurality of slits 66-j (j = 1 ~ K) that hold the portions of the plurality of contact pieces 7-j (j = 1 ~ K) that protrude from the through holes 67-j (j = 1 ~ K) toward the side of the head portion 62. Furthermore, the portions of the contact pieces 7-j that are inserted into the through holes 67-j and the portions held by the slits 66-j form a straight line, and the upper end and the lower end of the through holes 67-j in the base portion 63 are provided with two holding portions 679 and 678 that hold the straight line portions 72 of the contact pieces 7-j, and a gap is formed between the two by the groove 672 between the peripheral walls of the portions between the two holding portions 679 and 678 of the through holes 67-j and the straight line portions 72. Therefore, the difference in impedance between the straight line portions 72 of the contact pieces 7-j and the bent portions other than these is further reduced. Therefore, it is possible to suppress impedance mismatching of the plug unit 97.

[0083] The above describes an embodiment of the present application, but the following modifications can be applied to this embodiment.

[0084] (1) In the above embodiment, the rows of the contact pieces 3-j (j = 1 ~ K) of the receptacle unit 93 can be formed in one row, or three or more rows can be formed.

[0085] (2) In the above embodiment, the number of anchor plates 8 need not be two, but one or three or more can be formed.

[0086] (3) In the above embodiment, the groove 672 is provided in the portions of the four peripheral walls of the left and right through holes 67-j other than the two holding portions 679 and 678. However, the groove 672 need not be provided in all of the four peripheral walls of the left and right through holes 67-j. For example, the groove 672 can be provided only in the two peripheral walls of the left and right of the left and right through holes 67-j, or the groove 672 can be provided only in the two peripheral walls of the front and back.

[0087] (4) In the above embodiment, the groove 661 is provided in the three peripheral walls of the left and right slits 66-j. However, the groove 661 need not be provided in all of the three peripheral walls of the left and right slits 66-j. For example, the groove 661 can be provided only in the peripheral wall of the left and right slits 66-j on the side opposite the side that is open.

[0088] (5) In the above embodiment, the number K of the contact pieces 7-j can be 145 or more, or 143 or less.

[0089] Explanation of symbols:

[0090] 1…fixed housing; 2…floating housing; 3…contact; 4…anchor plate; 5…conductive resin member; 6…housing; 7…contact; 8…anchor plate; 10…opening portion; 11…wall portion; 12…wall portion; 14…bent portion; 15…inner edge portion; 17…slit; 20…socket; 21…wall portion; 22…wall portion; 23…bottom portion; 24…bent portion; 25…outer edge portion; 26…slit; 31…terminal portion; 32…contact portion; 36…support piece portion; 37…support piece portion; 38…elastically deformable portion; 40…mounting portion; 41…main body portion; 42…protruding portion; 43…protruding portion; 51…lower plate portion; 53…projection; 59…column portion; 62…head portion; 63…base portion; 66…slit; 67…through hole; 72…straight portion; 79…terminal portion; 80…linking portion; 81…rectangular piece portion; 93…receptacle unit; 97…plug unit; 100…connector; 101…movable space; 102…movable space; 111…projection; 112…middle plate; 113…protrusion; 120…gap; 121…holder; 122…projection; 220…through hole; 230…slot; 361…claw portion; 380…flexible portion; 381…straight portion; 386…linking portion; 387…linking portion; 411…projection; 412…claw portion; 421…elongated hole; 613…protrusion; 631…outer edge portion; 632…holder; 661…slot; 672…slot; 720…claw portion; 721…elongated hole; 812…claw portion.

Claims

1. A connector comprising a socket unit mounted to a first substrate, and a plug unit mounted to a second substrate and connected to the socket unit, the socket unit and the plug unit being connected to each other, thereby electrically connecting the first substrate and the second substrate, the connector being characterized in that the plug unit comprises: a plurality of contact pieces; and a housing having a base portion provided with a plurality of through holes into which the plurality of contact pieces are inserted, and a head portion protruding from the base portion and provided with a plurality of slits that hold portions of the plurality of contact pieces that protrude from the through holes toward one side of the head portion, the contact pieces have straight portions that extend in a straight line along the through holes and the slits, the through holes have four peripheral walls that oppose each other in left-right and front-rear directions, grooves are provided in portions of the peripheral walls other than the two holding portions, and gaps are formed between the peripheral walls and the straight portions of the contact pieces by the grooves of the through holes.

2. The connector according to claim 1, characterized in that the contact pieces have terminal portions that are bent and extend outward from one end of the straight portions and are connected to the substrate.

3. The connector according to claim 2, characterized in that the plurality of contact pieces form two rows of left and right sides.

4. The connector according to claim 1, characterized in that the slits have peripheral walls that connect to the peripheral walls of the through holes, and grooves are provided in the peripheral walls of the slits.

5. The connector according to claim 4, characterized in that the grooves of the through holes and the grooves of the slits are recessed toward the same side.

6. The connector according to claim 5, characterized in that the grooves of the through holes and the grooves of the slits have the same depth. ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​

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