Board-to-Board Connectors

Abstract

The first pressing member includes a pressing member spring sheet, and the pressing member spring sheet is supported by the reinforcing plate portion in a cantilever beam shape. The pressing member spring sheet includes: a spring sheet body and a curved contact portion, the spring sheet body extends from the reinforcing plate portion, and the curved contact portion is formed at one end of the spring sheet body and protrudes toward the CPU substrate beyond the CPU substrate opposite surface. The housing is formed in the following manner: when the curved contact portion is elastically displaced toward the input-output substrate so that the curved contact portion no longer protrudes toward the CPU substrate beyond the CPU substrate opposite surface, the curved contact portion does not contact the housing.

Description

Technical Field

[0001] The invention relates to a board-to-board connector. Background Art

[0002] Patent document 1 (Japanese Patent Laid-Open No. 2006-156023) discloses a socket 103 including a socket contactor 100, an insulating housing 101 for accommodating the socket contactor 100, and a socket fixing plate 102 for fixing the insulating housing 101 to a substrate.

[0003] The socket fixing plate 102 includes fixing legs 104 and a socket contact portion 105. In the socket contact portion 105, a contact piece 106A and a contact piece 106B are formed by cutting and bending. Summary of the invention

[0004] In a situation where the pressing piece is provided with an elastic sheet and the elastic sheet has a contact portion, the elastic displacement of the contact portion may be hindered by the housing.

[0005] One object of the present invention is to provide a technology that achieves a structure in which a contact portion of a spring sheet disposed in a pressing member can be easily elastically displaced.

[0006] According to one purpose of the present invention, there is provided a board-to-board connector, which is mounted on a first substrate and built-in between the first substrate and a second substrate to electrically connect a plurality of pads of the first substrate to a plurality of pads of the second substrate, respectively. The board-to-board connector comprises: a flat shell; a plurality of contacts, which are fixed on the shell; and a pressure piece, which is made of metal; wherein the shell comprises: a second substrate facing surface, which is opposite to the second substrate; and a pressure piece receiving recess, which is formed on the second substrate facing surface; the pressure piece comprises: a welding portion, which can be connected by welding to the corresponding pad of the first substrate; a reinforcing plate portion, the reinforcing plate portion is received in the pressure piece receiving recess and covers the inner bottom surface of the pressure piece receiving recess; and a pressure piece spring sheet, the pressure piece spring sheet is supported by the reinforcing plate portion in a cantilever beam shape, the pressure piece spring sheet comprises: a spring sheet body and a contact portion, the spring sheet body extends from the reinforcing plate portion, the contact portion is formed at one end of the spring sheet body, and protrudes toward the second substrate beyond the second substrate opposite surface, and the shell is formed in the following manner: when the contact portion is elastically displaced toward the first substrate so that the contact portion no longer protrudes toward the second substrate beyond the second substrate opposite surface, the contact portion does not contact the shell.

[0007] By means of the present invention, the contact portion of the pressing piece spring sheet arranged in the pressing piece can be easily elastically displaced.

[0008] The above and other objects, features and advantages of the present invention can be more fully understood from the following detailed description and the accompanying drawings, which are for illustration only and are not to be considered as limiting the scope of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0009] Figure 1 It is an exploded perspective view of the information processing device (first embodiment).

[0010] Figure 2 This is an exploded perspective view of the information processing device (first embodiment) viewed from another angle.

[0011] Figure 3 It is an oblique view of the connector (first embodiment).

[0012] Figure 4 It is an exploded perspective view of the connector (first embodiment).

[0013] Figure 5 It is an oblique view of the shell (first embodiment).

[0014] Figure 6 To depict a top view of the connector, wherein the pressing piece is omitted (first embodiment).

[0015] Figure 7 1 is a top view of the connector (first embodiment).

[0016] Figure 8 for Figure 7 An enlarged view of portion A shown (first embodiment).

[0017] Fig. 9 for Figure 7 An enlarged view of portion B is shown (first embodiment).

[0018] Fig.10 It is an oblique view of the pressing piece spring before deformation, wherein the housing is cut open for the convenience of description (first embodiment).

[0019] Fig.11 It is a side view of the pressing piece spring before deformation, wherein the housing is cut open for the convenience of illustration (first embodiment).

[0020] Fig.12 It is a side view of the pressure piece spring after deformation, wherein the housing is cut open for the convenience of illustration (first embodiment).

[0021] Fig.13 It is a partial cross-sectional perspective view of a housing with contacts attached (first embodiment).

[0022] Fig.14It is a partial cross-sectional oblique view of the shell (first embodiment).

[0023] Fig.15 It is a partial cross-sectional view of a housing with contacts attached (first embodiment).

[0024] Fig.16 It is an oblique view of the contact member (first embodiment).

[0025] Fig.17 It is an exploded perspective view of the connector (second embodiment).

[0026] Fig.18 The Japanese Patent Publication No. 2006-156023 Figure 1 Schematic diagram of the.

[0027] Explanation of symbols

[0028] 100: Socket contactor

[0029] 101: Insulation shell

[0030] 102: Socket fixing plate

[0031] 103: Socket

[0032] 104: Fixed foot

[0033] 105: socket contact

[0034] 106A: Contact piece

[0035] 106B: Contact piece

[0036] 200: Information processing device

[0037] 201: CPU substrate

[0038] 201A: Connector facing side

[0039] 202: Connector

[0040] 203: Input and output substrate

[0041] 203A: Connector facing side

[0042] 204: Support substrate

[0043] 205: Pad Column

[0044] 206: Pad

[0045] 206A: First shielding gasket

[0046] 206B: Second shielding gasket

[0047] 206C: Third shielding gasket

[0048] 206D: Fourth shielding gasket

[0049] 207: First bolt locking hole

[0050] 208: Second bolt locking hole

[0051] 209: First positioning hole

[0052] 210: Second positioning hole

[0053] 211: First Bolt

[0054] 212: Second bolt

[0055] 214: Pad Column

[0056] 215: Padding

[0057] 216: Pad

[0058] 217: First bolt locking hole

[0059] 218: Second bolt locking hole

[0060] 219: First through hole

[0061] 220: Second through hole

[0062] 230: Substrate body

[0063] 231: First Nut

[0064] 232: Second nut

[0065] 233: First positioning pin

[0066] 234: Second positioning pin

[0067] 250: Shell

[0068] 250A: CPU substrate facing surface

[0069] 250B: Input and output substrate facing surface

[0070] 250C: Bisector

[0071] 250D: Partial

[0072] 251, 251A~251F: Contact row

[0073] 252: First pressing piece

[0074] 252A: Reinforced plate

[0075] 252B: Welding Department

[0076] 252C: Through hole

[0077] 252D: Inner edge

[0078] 252E: Inner diameter

[0079] 252P: Pressed spring

[0080] 252Q: Shrapnel body

[0081] 252R: Curved contact part

[0082] 252S: Convex curved surface

[0083] 252T: Vertex

[0084] 252X: Protruding height

[0085] 253: Second pressure piece

[0086] 253A: Reinforced plate

[0087] 253B: Welding Department

[0088] 253C: Through hole

[0089] 253D: Inner edge

[0090] 253E: Straight edge

[0091] 253F: Distance

[0092] 254: The third pressure piece

[0093] 254A: Reinforced plate

[0094] 254B: Welding Department

[0095] 255: The fourth pressure piece

[0096] 255A: Reinforced plate

[0097] 255B: Welding part

[0098] 260: First positioning hole

[0099] 260A: Inner edge

[0100] 260B: Inner diameter

[0101] 261: Second positioning hole

[0102] 261A: Inner edge

[0103] 261B: Straight edge

[0104] 261C: Distance

[0105] 262: First spacing side

[0106] 263: Second spacing side

[0107] 264: First width side

[0108] 265: Second width side

[0109] 266: First corner

[0110] 267: Second corner

[0111] 268: Third corner

[0112] 269: Fourth Corner

[0113] 270: First pressing piece press fitting groove

[0114] 271: First nut gap

[0115] 272: Second pressing piece press-fit groove

[0116] 273: Third pressing piece press fitting groove

[0117] 274: Second nut gap

[0118] 275: Fourth pressing piece press fitting groove

[0119] 280: First pressing member receiving recess

[0120] 280A: Inner bottom surface

[0121] 280B: Contact recess

[0122] 280C: Inner bottom

[0123] 281: Second pressing member receiving recess

[0124] 281A: Inner bottom

[0125] 281B: Contact recess

[0126] 281C: Inner bottom

[0127] 282: Third pressing piece receiving recess

[0128] 282A: Inner bottom

[0129] 282B: Contact recess

[0130] 282C: Inner bottom

[0131] 283: Fourth pressing piece receiving recess

[0132] 283A: Inner bottom

[0133] 283B: Contact recess

[0134] 283C: Inner bottom

[0135] 284: Contact receiving part

[0136] 300: Contact

[0137] 301: Press-fit space

[0138] 302: Welding connection inspection hole

[0139] 303: Separation Wall

[0140] 304: Spacing separating surfaces

[0141] 305: Press-fit groove

[0142] 305A: Press-fit surface

[0143] 306: First separation surface

[0144] 307: Second separation surface

[0145] 308: Gap

[0146] 320: Press-fit section

[0147] 321: Welding Department

[0148] 321A: Horizontal extension

[0149] 321B: Bend

[0150] 322: Electrical contact spring

[0151] 323: Press fitting body

[0152] 324: Press-fit claws

[0153] 325: Spring member joint

[0154] 326: easy elastic deformation part

[0155] 326A: Lower straight part

[0156] 326B: Bend

[0157] 326C: Upper straight part

[0158] 327: Contact Department

[0159] 327X: Protruding height

[0160] 330: Welding fillet

[0161] 380: First nut through hole

[0162] 381: Second nut through hole

[0163] 382: Integral Pressed Parts

[0164] 383: Strengthen the plate

[0165] 384: Welding Department

[0166] 385: First welding section

[0167] 386: Second welding section

[0168] 387: The third welding section

[0169] 388: Fourth welding section

[0170] 400: Pressed spring

[0171] 401: First integral pressing piece receiving recess

[0172] 401A: Inner bottom surface

[0173] 401B: Contact concave part

[0174] 401C: Inner bottom

[0175] 402: Second integral pressing piece receiving recess

[0176] 402A: Inner bottom surface

[0177] 402B: Contact part concave part

[0178] 402C: Inner bottom

[0179] D1~D3: Distance

[0180] E1~E3: Distance DETAILED DESCRIPTION

[0181] First embodiment

[0182] The following reference Figures 1 to 16 The first embodiment is described.

[0183] Figure 1 and Figure 2 FIG. 2 is an exploded perspective view of the information processing device 200. Figure 1 and Figure 2 As shown, the information processing device 200 includes a CPU substrate 201, a connector 202, an input-output substrate 203, and a support substrate 204. The connector 202 is provided between the CPU substrate 201 and the input-output substrate 203.

[0184] The CPU substrate 201 and the input / output substrate 203 are rigid substrates, such as a paper phenolic board or a glass epoxy board.

[0185] like Figure 2 As shown, the CPU substrate 201 includes: a connector facing surface 201A facing the connector 202. A plurality of pad columns 205 are formed on the connector facing surface 201A. In this embodiment, six pad columns 205 are formed. The plurality of pad columns 205 extend parallel to each other. The plurality of pad columns 205 are arranged in a direction orthogonal to the extending direction of one of the pad columns 205. Each pad column 205 includes a plurality of pads 206. On the connector facing surface 201A, a first shielding pad 206A, a second shielding pad 206B, a third shielding pad 206C, and a fourth shielding pad 206D are formed.

[0186] The CPU substrate 201 has a first bolt locking hole 207, a second bolt locking hole 208, a first positioning hole 209, and a second positioning hole 210. The first bolt locking hole 207 and the second bolt locking hole 208 are formed in such a manner that the plurality of pad columns 205 are located between the first bolt locking hole 207 and the second bolt locking hole 208 in the longitudinal direction of each pad column 205. The first positioning hole 209 and the second positioning hole 210 are formed so as to be adjacent to the first bolt locking hole 207 in a direction orthogonal to the longitudinal direction of each pad column 205. The first positioning hole 209 and the second positioning hole 210 are formed in such a manner that the first bolt locking hole 207 is located between the first positioning hole 209 and the second positioning hole 210 in a direction orthogonal to the longitudinal direction of each pad column 205.

[0187] like Figure 1 As shown, the input / output substrate 203 includes: a connector facing surface 203A facing the connector 202. A plurality of pad rows 214 are formed on the connector facing surface 203A. In this embodiment, six pad rows 214 are formed. The plurality of pad rows 214 extend parallel to each other. The plurality of pad rows 214 are arranged in a direction orthogonal to the extending direction of one of the pad rows 214. Each pad row 214 includes a plurality of pads 215. Furthermore, a plurality of pads 216 for a press member are formed on the connector facing surface 203A.

[0188] The input / output substrate 203 has a first bolt locking hole 217, a second bolt locking hole 218, a first through hole 219, and a second through hole 220. The first bolt locking hole 217 and the second bolt locking hole 218 are formed in such a manner that the plurality of gasket rows 214 are located between the first bolt locking hole 217 and the second bolt locking hole 218 in the longitudinal direction of each gasket row 214. The first through hole 219 and the second through hole 220 are formed so as to be adjacent to the first bolt locking hole 217 in a direction orthogonal to the longitudinal direction of each gasket row 214. The first through hole 219 and the second through hole 220 are formed so that the first bolt locking hole 217 is located between the first through hole 219 and the second through hole 220 in a direction orthogonal to the longitudinal direction of each gasket row 214.

[0189] The support substrate 204 is usually a part of a housing that accommodates the CPU substrate 201, the connector 202, and the input / output substrate 203, and is made of, for example, aluminum or an aluminum alloy. The support substrate 204 includes a flat substrate body 230, a first nut 231, a second nut 232, a columnar first positioning pin 233, and a columnar second positioning pin 234.

[0190] The first nut 231 is disposed to correspond to the first bolt locking hole 217 of the input / output substrate 203 .

[0191] The second nut 232 is configured to correspond to the second bolt locking hole 218 of the input-output base plate 203 .

[0192] The columnar first positioning pin 233 is provided to correspond to the first through hole 219 of the input / output substrate 203 .

[0193] The columnar second positioning pin 234 is disposed to correspond to the second through hole 220 of the input / output substrate 203 .

[0194] The connector 202 is connected to the connector facing surface 203A of the input / output substrate 203 by soldering so as to be surface mountable. Figure 3 and Figure 4 As shown, the connector 202 includes: a rectangular flat plate-shaped housing 250 made of insulating resin, a plurality of contact member columns 251, a first pressing member 252, a second pressing member 253, a third pressing member 254, and a fourth pressing member 255. The plurality of contact member columns 251, the first pressing member 252, the second pressing member 253, the third pressing member 254, and the fourth pressing member 255 are fixed on the housing 250.

[0195] like Figure 3 and Figure 4 As shown, the plurality of contact element columns 251 extend parallel to each other. The plurality of contact element columns 251 are arranged in a direction orthogonal to the extending direction of one of the contact element columns 251. Figure 4 As shown, the plurality of contact columns 251 include six contact columns 251. The six contact columns 251 include contact column 251A, contact column 251B, contact column 251C, contact column 251D, contact column 251E, and contact column 251F. Each contact column 251 includes: a plurality of contacts 300 made of metal. The plurality of contacts 300 belonging to each contact column 251 are arranged at equal intervals.

[0196] Each contact member 300 is formed by stamping and bending a metal plate, for example, the metal plate is formed of copper plating or copper alloy. Similarly, the first pressing member 252, the second pressing member 253, the third pressing member 254, and the fourth pressing member 255 are formed by stamping and bending a metal plate, for example, the metal plate is a stainless steel plate.

[0197] By reference Figure 1 , define "vertical direction", "pitch direction", and "width direction". The vertical direction, the pitch direction, and the width direction are directions that are orthogonal to each other.

[0198] like Figure 1 As shown, the vertical direction is the thickness direction of the housing 250. The vertical direction includes an upward direction and a downward direction. The upward direction is the direction from the housing 250 to view the CPU substrate 201. The downward direction is the direction from the housing 250 to view the input / output substrate 203. The vertical direction is only a direction for explanation and cannot be used to limit the state of the connector 202 when it is actually used.

[0199] The pitch direction is the length direction of each contact row 251 .

[0200] The width direction is a direction perpendicular to the vertical direction and the pitch direction. The plurality of contact rows 251 are arranged to be separated from each other in the width direction.

[0201] Figure 5 Depict housing 250. Figure 5 As shown, the housing 250 includes: a CPU substrate facing surface 250A facing the CPU substrate 201 by facing the upward direction, and an input / output substrate facing surface 250B facing the input / output substrate 203 by facing the downward direction. The housing 250 has a first positioning hole 260 and a second positioning hole 261. The first positioning hole 260 and the second positioning hole 261 are formed to penetrate the housing 250 in the vertical direction.

[0202] Refer back Figure 1 , describing an outline of the assembly procedure of the information processing device 200.

[0203] First, the connector 202 is surface mounted on the input / output substrate 203. Specifically, the plurality of contact columns 251 are welded to the corresponding pad columns 214, and the first pressing member 252 and the like are welded to the corresponding pads 216.

[0204] Next, the input-output substrate 203 with the connector 202 mounted thereon is attached to the support substrate 204. At this time, the first nut 231 penetrates the first bolt locking hole 217, and the second nut 232 penetrates the second bolt locking hole 218. Similarly, the first positioning pin 233 penetrates the first through hole 219 and the first positioning hole 260 in sequence, and the second positioning pin 234 penetrates the second through hole 220 and the second positioning hole 261 in sequence.

[0205] Next, the CPU substrate 201 is attached to the support substrate 204 in such a manner that the CPU substrate 201 overlaps the connector 202. At this time, the first positioning pin 233 passes through the first positioning hole 209, and the second positioning pin 234 passes through the second positioning hole 210. In this state, the first bolt 211 is locked to the first nut 231 through the first bolt locking hole 207, and the second bolt 212 is locked to the second nut 232 through the second bolt locking hole 208. In this way, the connector 202 is built between the CPU substrate 201 and the input-output substrate 203, and accordingly, the plurality of pads 215 of the input-output substrate 203 and the plurality of pads 206 of the CPU substrate 201 are electrically connected to each other through the plurality of contacts 300. Similarly, the connector 202 is built between the CPU substrate 201 and the input / output substrate 203, and accordingly, the plurality of pads 216 of the input / output substrate 203 and the first shielding pad 206A of the CPU substrate 201 are electrically connected to each other through the first pressing member 252, etc. Through this electrical connection, a high electromagnetic shielding effect of the connector 202 is achieved.

[0206] Furthermore, the first positioning pin 233 is inserted into the first positioning hole 260 of the connector 202 and the first positioning hole 209 of the CPU substrate 201, and the second positioning pin 234 is inserted into the second positioning hole 261 of the connector 202 and the second positioning hole 210 of the CPU substrate 201, thereby achieving highly accurate positioning of the CPU substrate 201 relative to the connector 202.

[0207] The connector 202 is described in further detail below.

[0208] like Figure 5As shown, the housing 250 is formed into a rectangular flat plate. In detail, the housing 250 includes a first spacing side surface 262, a second spacing side surface 263, a first width side surface 264, and a second width side surface 265. The first spacing side surface 262 and the second spacing side surface 263 are sides that are orthogonal to the spacing direction. The first spacing side surface 262 and the second spacing side surface 263 face each other. The first width side surface 264 and the second width side surface 265 are sides that are orthogonal to the width direction. The first width side surface 264 and the second width side surface 265 face each other.

[0209] The housing 250 further includes a first corner 266, a second corner 267, a third corner 268, and a fourth corner 269. The first corner 266 is the corner where the first spacing side 262 intersects with the first width side 264. The second corner 267 is the corner where the first spacing side 262 intersects with the second width side 265. The third corner 268 is the corner where the second spacing side 263 intersects with the first width side 264. The fourth corner 269 is the corner where the second spacing side 263 intersects with the second width side 265. Accordingly, when viewed from above, the first corner 266 and the fourth corner 269 are located at the diagonal position of the rectangular housing 250. Similarly, when viewed from above, the second corner 267 and the third corner 268 are located at the diagonal position of the rectangular housing 250. The above-mentioned first positioning hole 260 is formed at the first corner 266. The second positioning hole 261 is formed at the second corner 267. The housing 250 has only two positioning holes.

[0210] On the first spacing side surface 262 , a first pressing piece press-fit groove 270 , a first nut notch 271 , and a second pressing piece press-fit groove 272 are sequentially formed from the first width side surface 264 to the second width side surface 265 .

[0211] On the second spacing side surface 263 , a third pressing piece press-fit groove 273 , a second nut notch 274 , and a fourth pressing piece press-fit groove 275 are sequentially formed from the first width side surface 264 to the second width side surface 265 .

[0212] A first pressing member accommodating recess 280 , a second pressing member accommodating recess 281 , a third pressing member accommodating recess 282 , and a fourth pressing member accommodating recess 283 are formed on the CPU substrate facing surface 250A.

[0213] A plurality of contact receiving portions 284 are further formed on the housing 250 .

[0214] The first pressing member press-fit groove 270 is a groove for retaining the first pressing member 252 by press-fitting.

[0215] The second pressing member press-fitting groove 272 is a groove for retaining the second pressing member 253 by press-fitting.

[0216] The third pressing member press-fit groove 273 is a groove for retaining the third pressing member 254 by press-fitting.

[0217] The fourth pressing member press-fit groove 275 is a groove for retaining the fourth pressing member 255 by press-fitting.

[0218] The first nut notch 271 is a notch to avoid physical interference between the first nut 231 and the housing 250. Figure 1 As shown in the figure, there is a physical interference between the first nut 231 and the housing 250 . The housing 250 may be provided with a hole allowing the first nut 231 to pass through, so as to replace the first nut notch 271 .

[0219] The second nut notch 274 is to avoid Figure 1 The gap between the second nut 232 and the housing 250 shown in FIG. Figure 1 The physical interference between the second nut 232 and the housing 250 can form a hole in the housing 250 for the second nut 232 to pass through, without forming a second nut notch 274 on the housing 250 .

[0220] Refer back Figure 5 , the first pressing member accommodating recess 280 is formed to accommodate the first pressing member 252, accordingly, the first pressing member 252 attached to the housing 250 is not closer to the CPU substrate 201 than the CPU substrate opposing surface 250A. The first pressing member accommodating recess 280 is formed at the first corner 266. When viewed from above, the first pressing member accommodating recess 280 is formed to surround the first positioning hole 260. The depth of the first pressing member accommodating recess 280 is greater than the thickness of the first pressing member 252. The inner bottom surface 280A of the first pressing member accommodating recess 280 has a contact portion recess 280B. The contact portion recess 280B is formed away from the first positioning hole 260. The contact portion recess 280B is located on one side of the first positioning hole 260, and the side of the first positioning hole 260 is the first spacing side surface 262 located on the opposite side of the side of the first positioning hole 260 in the spacing direction. The contact portion recess 280B is formed by further recessing the inner bottom surface 280A of the first pressing member receiving recess 280. The contact portion recess 280B extends in the width direction. The contact portion recess 280B includes an inner bottom surface 280C. The inner bottom surface 280A of the first pressing member receiving recess 280 and the inner bottom surface 280C of the contact portion recess 280B are parallel to each other, and both are surfaces orthogonal to the vertical direction. The inner bottom surface 280A of the first pressing member receiving recess 280 and the inner bottom surface 280C of the contact portion recess 280B are part of the CPU substrate facing surface 250A of the housing 250.

[0221] The second pressing member accommodating recess 281 is formed to accommodate the second pressing member 253, whereby the second pressing member 253 attached to the housing 250 is not closer to the CPU substrate 201 than the CPU substrate opposing surface 250A. The second pressing member accommodating recess 281 is formed at the second corner 267. When viewed from above, the second pressing member accommodating recess 281 is formed to surround the second positioning hole 261. The depth of the second pressing member accommodating recess 281 is greater than the thickness of the second pressing member 253. The inner bottom surface 281A of the second pressing member accommodating recess 281 has a contact portion recess 281B. The contact portion recess 281B is formed to be away from the second positioning hole 261. The contact portion recess 281B is located on one side of the second positioning hole 261, and the side of the second positioning hole 261 is the first spacing side surface 262 located on the opposite side of the side of the second positioning hole 261 in the spacing direction. The contact portion recess 281B is formed by further recessing the inner bottom surface 281A of the second pressing member receiving recess 281. The contact portion recess 281B extends in the width direction. The contact portion recess 281B includes an inner bottom surface 281C. The inner bottom surface 281A of the second pressing member receiving recess 281 and the inner bottom surface 281C of the contact portion recess 281B are parallel to each other, and both are surfaces orthogonal to the vertical direction. The inner bottom surface 281A of the second pressing member receiving recess 281 and the inner bottom surface 281C of the contact portion recess 281B are part of the CPU substrate facing surface 250A of the housing 250.

[0222] The third pressing member receiving recess 282 is formed to receive the third pressing member 254, whereby the third pressing member 254 attached to the housing 250 is not closer to the CPU substrate 201 than the CPU substrate facing surface 250A. The third pressing member receiving recess 282 is formed at the third corner 268. The depth of the third pressing member receiving recess 282 is greater than the thickness of the third pressing member 254. The inner bottom surface 282A of the third pressing member receiving recess 282 has a contact portion recess 282B. The contact portion recess 282B is formed by further recessing the inner bottom surface 282A of the third pressing member receiving recess 282. The contact portion recess 282B extends in the width direction. The contact portion recess 282B includes an inner bottom surface 282C. The inner bottom surface 282A of the third pressing member receiving recess 282 and the inner bottom surface 282C of the contact portion recess 282B are parallel to each other, and both are surfaces orthogonal to the vertical direction. The inner bottom surface 282A of the third pressing member accommodating recess 282 and the inner bottom surface 282C of the contact portion recess 282B are part of the CPU substrate facing surface 250A of the housing 250 .

[0223] The fourth pressing member receiving recess 283 is formed to receive the fourth pressing member 255, whereby the fourth pressing member 255 attached to the housing 250 is not closer to the CPU substrate 201 than the CPU substrate facing surface 250A. The fourth pressing member receiving recess 283 is formed at the fourth corner 269. The depth of the fourth pressing member receiving recess 283 is greater than the thickness of the fourth pressing member 255. The inner bottom surface 283A of the fourth pressing member receiving recess 283 has a contact portion recess 283B. The contact portion recess 283B is formed by further recessing the inner bottom surface 283A of the fourth pressing member receiving recess 283. The contact portion recess 283B extends in the width direction. The contact portion recess 283B includes an inner bottom surface 283C. The inner bottom surface 283A of the fourth pressing member receiving recess 283 and the inner bottom surface 283C of the contact portion recess 283B are parallel to each other, and both are surfaces orthogonal to the vertical direction. The inner bottom surface 283A of the fourth pressure piece accommodating recess 283 and the inner bottom surface 283C of the contact portion recess 283B are part of the CPU substrate facing surface 250A of the housing 250 .

[0224] Each contact receiving portion 284 is a portion for receiving each contact 300. Each contact receiving portion 284 is formed to penetrate the housing 250 in the vertical direction.

[0225] Figure 6 The connector 202 is depicted as viewed from above. However, it should be noted that the first press member 252, the second press member 253, the third press member 254, and the fourth press member 255 are not depicted for ease of illustration.

[0226] like Figure 6 As shown, the first press-fit groove 270 and the like are formed on the first pitch side surface 262. Accordingly, the first pitch side surface 262 exists in a discontinuous manner in the width direction. For the purpose of the following description, a portion of the first pitch side surface 262 that is missing due to the formation of the first press-fit groove 270 and the like is indicated by a double-dot chain line, and a finger line of the first pitch side surface 262 is drawn from the double-dot chain line to indicate the first pitch side surface 262.

[0227] Similarly, the third press-fit groove 273 and the like are formed on the second pitch side surface 263. Accordingly, the second pitch side surface 263 exists in a discontinuous manner in the width direction. For the purpose of the following description, a portion of the second pitch side surface 263 that is missing due to the formation of the third press-fit groove 273 and the like is indicated by a double-dot chain line, and a finger line of the second pitch side surface 263 is drawn from the double-dot chain line to indicate the second pitch side surface 263.

[0228] like Figure 6As shown, a plurality of contact rows 251 are arranged symmetrically with respect to the bisector 250C, and accordingly, the housing 250 is divided into two halves in the width direction. Among the plurality of contact rows 251, particular attention is paid to the contact row 251A, the contact row 251D, and the contact row 251F.

[0229] The contact row 251A, the contact row 251D, and the contact row 251F extend from the first pitch side 262 to the second pitch side 263.

[0230] The first positioning hole 260 is adjacent to the contact row 251A in the pitch direction. The first positioning hole 260 is provided between the contact row 251A and the first pitch side 262 shown by the chain double-dashed line.

[0231] Similarly, the second positioning hole 261 is adjacent to the contact row 251F in the pitch direction. The second positioning hole 261 is provided between the contact row 251F and the first pitch side 262 shown by the chain double-dashed line.

[0232] In the pitch direction, the distance between the contact row 251A and the first pitch side 262 is defined as the distance D1. Specifically, the distance D1 is the distance between the first pitch side 262 and the contact 300 among the plurality of contacts 300 forming the contact row 251A that is closest to the first pitch side 262.

[0233] Similarly, in the pitch direction, the distance between the contact row 251F and the first pitch side 262 is defined as the distance D2. Specifically, the distance D2 is the distance between the first pitch side 262 and the contact 300 among the plurality of contacts 300 forming the contact row 251F that is closest to the first pitch side 262.

[0234] Similarly, in the pitch direction, the distance between the contact row 251D and the first pitch side 262 is defined as the distance D3. Specifically, the distance D3 is the distance between the first pitch side 262 and the contact 300 among the plurality of contacts 300 forming the contact row 251D that is closest to the first pitch side 262.

[0235] In this embodiment, the relationship D1 = D2 is established. Furthermore, in this embodiment, the relationships D3 < D1 and D3 < D2 are established. In short, the contact row 251D is closer to the first pitch side 262 than the contact row 251A, and is also closer to the first pitch side 262 than the contact row 251F.

[0236] The first nut notch 271 opens the first pitch side 262 shown by the chain double-dashed line and is formed between the contact row 251D and the first pitch side 262 shown by the chain double-dashed line.

[0237] In the pitch direction, the distance between the contact array 251A and the second pitch side surface 263 is defined as a distance E1. Specifically, the distance E1 is the distance between the second pitch side surface 263 and the contact 300 closest to the second pitch side surface 263 among the plurality of contacts 300 forming the contact array 251A.

[0238] Similarly, in the pitch direction, the distance between the contact row 251F and the second pitch side surface 263 is defined as the distance E2. Specifically, the distance E2 is the distance between the second pitch side surface 263 and the contact 300 closest to the second pitch side surface 263 among the plurality of contacts 300 forming the contact row 251F.

[0239] Similarly, in the pitch direction, the distance between the contact array 251D and the second pitch side surface 263 is defined as a distance E3. Specifically, the distance E3 is the distance between the second pitch side surface 263 and the contact 300 closest to the second pitch side surface 263 among the plurality of contacts 300 forming the contact array 251D.

[0240] In this embodiment, the relationship E1=E2 is established. Furthermore, in this embodiment, the relationship E3>E1 and E3>E2 is established. In short, the contact row 251D is farther from the second pitch side 263 than the contact row 251A, and is also farther from the second pitch side 263 than the contact row 251F.

[0241] The second nut notch 274 opens the second spacing side surface 263 indicated by the double-dotted chain line, and is formed between the contact element column 251D and the second spacing side surface 263 indicated by the double-dotted chain line.

[0242] The following reference Figures 7 to 12 The first positioning hole 260 , the second positioning hole 261 , the first pressing member 252 , the second pressing member 253 , the third pressing member 254 , and the fourth pressing member 255 are described in detail. Figure 8 for Figure 7 An enlarged view of part A is shown. Fig. 9 for Figure 7 An enlarged view of part B is shown.

[0243] like Figure 8 As shown, the first positioning hole 260 is a circular hole that passes through the housing 250 in the vertical direction and has an inner edge 260A.

[0244] The first pressing member 252 includes a reinforcing plate portion 252A, two welding portions 252B, and a pressing member spring piece 252P.

[0245] The reinforcing plate portion 252A is arranged to cover the CPU substrate facing surface 250A around the first positioning hole 260. The reinforcing plate portion 252A is accommodated in the first pressing member accommodating recess 280 formed on the CPU substrate facing surface 250A. The reinforcing plate portion 252A is arranged in the internal space of the first pressing member accommodating recess 280. The reinforcing plate portion 252A is arranged to cover the inner bottom surface 280A of the first pressing member accommodating recess 280. The inner bottom surface 280A of the first pressing member accommodating recess 280 is a part of the CPU substrate facing surface 250A. In this structure, when covering the CPU substrate facing surface 250A, the reinforcing plate portion 252A is farther away from the CPU substrate 201 than the part 250D in which the first pressing member accommodating recess 280 is not formed in the CPU substrate facing surface 250A. Accordingly, when the CPU substrate 201 is pressed relative to the connector 202, the elastic deformation of each contact member 300 is not hindered.

[0246] Each welding portion 252B protrudes from the reinforcing plate portion 252A toward the input / output substrate 203 and can be connected to the corresponding pad 216 of the input / output substrate 203 by welding. One of the two welding portions 252B is press-fitted into the first pressing member press-fitting groove 270 formed on the first spacing side surface 262, whereby the first pressing member 252 is held by the housing 250. Each welding portion 252B protrudes downward by more than Figure 5 The input / output substrate facing surface 250B of the housing 250 is shown.

[0247] Refer back Figure 8 The reinforcing plate portion 252A has a through hole 252C. The through hole 252C is a circular hole that penetrates the reinforcing plate portion 252A in the vertical direction and has an inner edge 252D.

[0248] The through hole 252C is larger than the first positioning hole 260 . Specifically, the inner diameter 252E of the through hole 252C is larger than the inner diameter 260B of the first positioning hole 260 .

[0249] When viewed from above, the first pressing member 252 is arranged in a manner that the reinforcing plate portion 252A does not cover the inner edge 260A of the first positioning hole 260. Specifically, when viewed from above, the first pressing member 252 is arranged in a manner that the inner edge 260A of the first positioning hole 260 is located radially inward relative to the inner edge 252D of the through hole 252C.

[0250] Accordingly, the reinforcing plate portion 252A made of metal does not hinder the positioning function of the first positioning pin 233 and the inner edge 260A of the first positioning hole 260. Furthermore, when the first positioning hole 260 is deformed outward in the radial direction due to contact with the first positioning pin 233, the reinforcing plate portion 252A made of metal reduces the deformation degree, thereby preventing the positioning accuracy of the positioning function from being significantly reduced.

[0251] The pressure piece spring piece 252P is supported by the reinforcing plate portion 252A in a cantilever beam shape. The pressure piece spring piece 252P is arranged to face the inner bottom surface 280C of the contact portion 280B in a vertical direction.

[0252] like Fig.10 As shown, the pressure piece spring piece 252P is formed to extend in the width direction. The pressure piece spring piece 252P includes: a spring piece body 252Q extending from the reinforcing plate portion 252A, and a curved contact portion 252R formed at one end of the spring piece body 252Q. The pressure piece spring piece 252P and the spring piece body 252Q face the inner bottom surface 280C of the contact portion recess 280B in the vertical direction with a gap therebetween.

[0253] The spring body 252Q extends parallel to the CPU substrate facing surface 250A.

[0254] The curved contact portion 252R is formed to be curved convexly toward the CPU substrate 201 (ie, upward), thereby achieving high connection reliability. Fig.11 As shown, when no load is applied to the pressure piece spring 252P, the curved contact portion 252R partially protrudes toward the CPU substrate 201 (that is, upward) beyond the CPU substrate opposing surface 250A. In detail, when no load is applied to the pressure piece spring 252P, the convex curved surface 252S protrudes toward the CPU substrate 201 (that is, upward) beyond the CPU substrate opposing surface 250A, and the convex curved surface 252S corresponds to the upper surface of the curved contact portion 252R. The height of the curved contact portion 252R protruding from the CPU substrate opposing surface 250A is referred to as the protruding height 252X. Similarly, when no load is applied to the pressure piece spring 252P, there is a gap between the inner bottom surface 280C of the contact portion recess 280 and the pressure piece spring 252P.

[0255] Fig.12 The CPU substrate 201 is pressed against the connector 202. Fig.12 In the figure, for the convenience of explanation, the thickness of the first shielding pad 206A is exaggerated. Fig.12As shown, when the CPU substrate 201 is pressed against the connector 202, the first shielding pad 206A provided on the connector facing surface 201A of the CPU substrate 201 abuts against a portion 250D of the CPU substrate facing surface 250A of the housing 250. At this time, the convex curved surface 252S of the curved contact portion 252R contacts the first shielding pad 206A, and accordingly, the pressing piece spring 252P is elastically deformed downward. In other words, the curved contact portion 252R is elastically displaced downward. As a result, the curved contact portion 252R no longer protrudes beyond the CPU substrate facing surface 250A toward the CPU substrate 201. In detail, the vertex 252T of the convex curved surface 252S in the vertical direction is located at the same height as the CPU substrate facing surface 250A in the vertical direction.

[0256] In such Fig.12 In the state shown, the housing 250 is formed in such a way that the bent contact portion 252R does not contact the housing 250. Specifically, the inner bottom surface 280A of the first pressing member receiving recess 280 has a contact portion recess 280B, and the contact portion recess 280B is perpendicular to the bent contact portion 252R. Fig.12 In the state shown, the contact portion recess 280B has a sufficient depth, and accordingly, the bent contact portion 252R does not contact the inner bottom surface 280C of the contact portion recess 280B. Accordingly, when the CPU substrate 201 is pressed relative to the connector 202, the bent contact portion 252R does not physically interfere with the inner bottom surface 280A of the first pressing member receiving recess 280 of the housing 250, thereby achieving flexible elastic displacement of the bent contact portion 252R in the vertical direction.

[0257] Refer back Fig. 9 The second positioning hole 261 is a long hole that passes through the housing 250 in the vertical direction. The second positioning hole 261 extends to be close to the first positioning hole 260. The second positioning hole 261 is long in the width direction. The second positioning hole 261 has an inner edge 261A.

[0258] The second pressing member 253 includes a reinforcing plate portion 253A, two welding portions 253B, and a pressing member spring piece 253P.

[0259] The reinforcing plate portion 253A is arranged to cover the CPU substrate facing surface 250A around the second positioning hole 261. The reinforcing plate portion 253A is accommodated in the second pressing member accommodating recess 281 formed on the CPU substrate facing surface 250A. The reinforcing plate portion 253A is arranged in the internal space of the second pressing member accommodating recess 281. The reinforcing plate portion 253A is arranged to cover the inner bottom surface 281A of the second pressing member accommodating recess 281. The inner bottom surface 281A of the second pressing member accommodating recess 281 is a part of the CPU substrate facing surface 250A. In this structure, when covering the CPU substrate facing surface 250A, the reinforcing plate portion 253A is farther away from the CPU substrate 201 than the part 250D in which the second pressing member accommodating recess 281 is not formed in the CPU substrate facing surface 250A. Accordingly, when the CPU substrate 201 is pressed relative to the connector 202, the elastic deformation of each contact member 300 is not hindered.

[0260] Each welding portion 253B protrudes from the reinforcing plate portion 253A toward the input / output substrate 203 and can be connected to the corresponding pad 216 of the input / output substrate 203 by welding. One of the two welding portions 253B is press-fitted into the second pressing member press-fitting groove 272 formed on the first spacing side surface 262, whereby the second pressing member 253 is held by the housing 250. Each welding portion 253B protrudes downward by more than 1 / 8 of the welding portion 253B. Figure 5 The input / output substrate facing surface 250B of the housing 250 is shown.

[0261] Refer back Fig. 9 The reinforcing plate portion 253A has a through hole 253C. The through hole 253C is a long hole that penetrates the reinforcing plate portion 253A in the vertical direction and has an inner edge 253D.

[0262] The through hole 253C is larger than the second positioning hole 261. Specifically, the inner edge 253D of the through hole 253C has two straight edge portions 253E facing each other in the pitch direction. The inner edge 261A of the second positioning hole 261 has two straight edge portions 261B facing each other in the pitch direction. The distance 253F between the two straight edge portions 253E is larger than the distance 261C between the two straight edge portions 261B.

[0263] When viewed from above, the second pressing member 253 is arranged in such a manner that the reinforcing plate portion 253A does not cover the inner edge 261A of the second positioning hole 261. Specifically, when viewed from above, the second pressing member 253 is arranged in such a manner that the inner edge 261A of the second positioning hole 261 is located inside relative to the inner edge 253D of the through hole 253C. In more detail, when viewed from above, the second pressing member 253 is arranged in such a manner that the two straight edge portions 261B are located between the two straight edge portions 253E.

[0264] Accordingly, the metal reinforcing plate portion 253A does not hinder the positioning function of the second positioning pin 234 and the inner edge 261A of the second positioning hole 261. Furthermore, when the second positioning hole 261 is deformed outward due to contact with the second positioning pin 234, the metal reinforcing plate portion 253A reduces the deformation degree, thereby preventing the positioning accuracy of the positioning function from being significantly reduced.

[0265] Since the description is repeated with the above description of the pressure piece spring piece 252P, the description of the structure of the pressure piece spring piece 253P and the description of the technical relationship between the pressure piece spring piece 253P and the inner bottom surface 281C of the contact portion recess 281B are omitted.

[0266] like Figure 4 As shown, in this embodiment, when the housing 250 is integrally formed, the first pressing member 252 and the second pressing member 253 are separate components. Figures 7 to 9 Compared with the relative positional relationship between the through hole 252C of the first pressing member 252 and the through hole 253C of the second pressing member 253, the relative positional relationship between the first positioning hole 260 and the second positioning hole 261 in the housing 250 is easier to manage. Figure 8 When viewed from above, the reinforcing plate portion 252A of the first pressing member 252 does not cover the inner edge 260A of the first positioning hole 260, and as shown in FIG. Fig. 9 As shown in the figure, when viewed from above, the reinforcing plate portion 253A of the second pressing member 253 does not cover the inner edge 261A of the second positioning hole 261, and the positioning function is reliably performed through the first positioning hole 260 and the second positioning hole 261 to achieve a high positioning accuracy of the CPU substrate 201 relative to the connector 202.

[0267] Refer back Figure 7 The third pressing member 254 includes a reinforcing plate portion 254A, two welding portions 254B, and a pressing member spring piece 254P.

[0268] The reinforcing plate portion 254A is arranged to cover the CPU substrate facing surface 250A. The reinforcing plate portion 254A is accommodated in the third pressing member accommodating recess 282 formed on the CPU substrate facing surface 250A. The reinforcing plate portion 254A is arranged in the inner space of the third pressing member accommodating recess 282. The reinforcing plate portion 254A is arranged to cover the inner bottom surface 282A of the third pressing member accommodating recess 282. The inner bottom surface 282A of the third pressing member accommodating recess 282 is a part of the CPU substrate facing surface 250A. In this structure, when covering the CPU substrate facing surface 250A, the reinforcing plate portion 254A is farther away from the CPU substrate 201 than the part 250D in which the third pressing member accommodating recess 282 is not formed in the CPU substrate facing surface 250A. Accordingly, when the CPU substrate 201 is pressed relative to the connector 202, the elastic deformation of each contact member 300 is not hindered.

[0269] Each welding portion 254B protrudes from the reinforcing plate portion 254A toward the input / output substrate 203 and can be connected to the corresponding pad 216 of the input / output substrate 203 by welding. One of the two welding portions 254B is press-fitted into the third pressing member press-fitting groove 273 formed on the second spacing side surface 263, thereby the third pressing member 254 is held by the housing 250. Each welding portion 254B protrudes downward by more than Figure 5 The input / output substrate facing surface 250B of the housing 250 is shown.

[0270] Because the description of the pressing piece spring piece 252P is repeated above, the description of the structure of the pressing piece spring piece 254P and the description of the structure of the pressing piece spring piece 254P and the structure of the pressing piece spring piece 254P are omitted. Figure 5 An illustration of the technical relationship between the inner bottom surface 282C of the contact portion recess 282B is shown.

[0271] Refer back Figure 7 The fourth pressing member 255 includes a reinforcing plate portion 255A, two welding portions 255B, and a pressing member spring piece 255P.

[0272] The reinforcing plate portion 255A is arranged to cover the CPU substrate facing surface 250A. The reinforcing plate portion 255A is accommodated in the fourth pressing member accommodating recess 283 formed on the CPU substrate facing surface 250A. The reinforcing plate portion 255A is arranged in the internal space of the fourth pressing member accommodating recess 283. The reinforcing plate portion 255A is arranged to cover the inner bottom surface 283A of the fourth pressing member accommodating recess 283. The inner bottom surface 283A of the fourth pressing member accommodating recess 283 is a part of the CPU substrate facing surface 250A. In this structure, when covering the CPU substrate facing surface 250A, the reinforcing plate portion 255A is farther away from the CPU substrate 201 than the part 250D in which the fourth pressing member accommodating recess 283 is not formed in the CPU substrate facing surface 250A. Accordingly, when the CPU substrate 201 is pressed relative to the connector 202, the elastic deformation of each contact member 300 is not hindered.

[0273] Each welding portion 255B protrudes from the reinforcing plate portion 255A toward the input / output substrate 203 and can be connected to the corresponding pad 216 of the input / output substrate 203 by welding. One of the two welding portions 255B is press-fitted into the fourth pressing member press-fitting groove 275 formed on the second spacing side surface 263, thereby the fourth pressing member 255 is held by the housing 250. Each welding portion 255B protrudes downward by more than Figure 5 The input / output substrate facing surface 250B of the housing 250 is shown.

[0274] Because the description of the pressing piece spring piece 252P is repeated above, the description of the structure of the pressing piece spring piece 255P and the description of the structure of the pressing piece spring piece 255P and the structure of the pressing piece spring piece 255P are omitted. Figure 5 An illustration of the technical relationship between the inner bottom surface 283C of the contact portion recess 283B is shown.

[0275] The following reference Figures 13 to 16 , each contact 300 and each contact receiving portion 284 are described in detail.

[0276] like Fig.13 and Fig.14 As shown, each contact receiving portion 284 is formed to attach each contact 300 to the housing 250. Fig.14 As shown, each contact receiving portion 284 is formed as a through hole that penetrates the housing 250 in the vertical direction and is open toward the CPU substrate facing surface 250A and the input / output substrate facing surface 250B. Each contact receiving portion 284 is composed of a press-fit space 301, a solder connection inspection hole 302, and a separation wall 303. The press-fit space 301 and the solder connection inspection hole 302 are formed to be separated from each other in the width direction. The separation wall 303 is a wall body that separates the press-fit space 301 from the solder connection inspection hole 302 in the width direction.

[0277] The press-fit space 301 is formed as a through hole that penetrates the housing 250 in the vertical direction. Specifically, the press-fit space 301 is open toward the CPU substrate facing surface 250A and the input / output substrate facing surface 250B. The housing 250 includes: two spacing partition surfaces 304 for each press-fit space 301, and the spacing partition surfaces 304 partition the press-fit space 301 in the spacing direction. Fig.14 Only one of the two spacing separation surfaces 304 is depicted. Fig.15 In FIG. 3 , the cross-sectional shapes of the press-fit space 301 and the welding connection inspection hole 302 are represented by double-dot chain lines. Fig.15 As shown, press-fit grooves 305 extending in the vertical direction are formed on each pitch dividing surface 304. Each pitch dividing surface 304 includes a press-fit surface 305A that divides the press-fit grooves 305 in the pitch direction.

[0278] Refer back Fig.14 The solder connection inspection hole 302 is a through hole that vertically penetrates the housing 250. Specifically, the solder connection inspection hole 302 is open toward the CPU substrate facing surface 250A and the input / output substrate facing surface 250B.

[0279] As described above, the separation wall 303 is a wall body that separates the press-fit space 301 from the welding connection inspection hole 302, and is formed between the press-fit space 301 and the welding connection inspection hole 302. Fig.15As shown, the separation wall 303 includes: a first separation surface 306 that separates the press-fit space 301 in the width direction, and a second separation surface 307 that separates the welding connection inspection hole 302 in the width direction. The first separation surface 306 and the second separation surface 307 are surfaces orthogonal to the width direction. Fig.14 and Fig.15 As shown, the separation wall 303 has a notch 308 that opens toward the press-fit space 301 and the solder connection inspection hole 302 , and the notch 308 also opens toward the input / output board facing surface 250B. The notch 308 is formed at the lower end of the separation wall 303 .

[0280] Fig.16 is an oblique view of each contact member 300. Fig.16 As shown, each contact element 300 includes a press-fit portion 320 , a welding portion 321 , and an electrical contact spring element 322 .

[0281] The press-fit portion 320 is press-fitted into the Fig.15 Specifically, the press-fit portion 320 is press-fitted into the press-fit space 301, and accordingly, each contact 300 is held by the housing 250. Fig.16 The press-fit portion 320 is a plate body orthogonal to the width direction, and includes a press-fit portion body 323 and two press-fit claws 324. The two press-fit claws 324 are formed to protrude toward the pitch direction from both ends of the press-fit portion body 323 in the pitch direction.

[0282] The welding portion 321 is connected to the Figure 1 The portion of the corresponding pad 215 of the input-output substrate 203 is shown. Fig.16 As shown, the welding portion 321 includes a horizontally extending portion 321A extending from a lower end of the press-fit portion 320 in the width direction, and a bent portion 321B bent upward from the horizontally extending portion 321A.

[0283] The electrical contact spring member 322 is: Figure 2 The electrical contact points between the CPU substrate 201 and the corresponding pads 215 are shown. Fig.16 As shown, the electrical contact spring element 322 includes a spring element joint portion 325, an easily elastically deformable portion 326, and a contact portion 327. The spring element joint portion 325, the easily elastically deformable portion 326, and the contact portion 327 are continuous in sequence.

[0284] The spring member engaging portion 325 extends downward from the upper end of the press-fit portion 320 .

[0285] The easily elastically deformable portion 326 extends from the lower end of the spring member engaging portion 325 and is formed into a U-shape that is convex in the width direction. Specifically, the easily elastically deformable portion 326 includes a lower straight portion 326A, a curved portion 326B, and an upper straight portion 326C. The lower straight portion 326A, the curved portion 326B, and the upper straight portion 326C are continuous in sequence. The lower straight portion 326A and the upper straight portion 326C face each other in the vertical direction. The lower straight portion 326A and the upper straight portion 326C are joined by the curved portion 326B.

[0286] The contact portion 327 is capable of contacting Figure 2 The portion of the CPU substrate 201 shown in the figure electrically contacts the corresponding pad 206. The contact portion 327 is provided at one end of the upper straight portion 326C of the easily elastically deformable portion 326 and is formed to be curved in an upward convex shape.

[0287] Fig.15 The state where each contact 300 is attached to each contact receiving portion 284 is depicted. In order to attach each contact 300 to each contact receiving portion 284, each contact 300 is press-fitted into the press-fitting space 301 of each contact receiving portion 284 from the input / output substrate facing surface 250B. At this time, Fig.16 The two press-fit claws 324 of the press-fit portion 320 shown are respectively engaged with the two spacing separation surfaces 304. In detail, Fig.16 Each of the two press-fit claws 324 of the illustrated press-fit portion 320 engages with a press-fit surface 305A of a press-fit groove 305 formed on the two pitch dividing surfaces 304 .

[0288] When each contact 300 is attached to each contact receiving portion 284, the easily elastically deformable portion 326 is received in the press-fit space 301, and accordingly, the contact portion 327 protrudes upward from the CPU substrate facing surface 250A. In a state where the contact portion 327 of the electrical contact spring member 322 is not in contact with the corresponding pad 206 of the CPU substrate 201, the height by which the contact portion 327 of the electrical contact spring member 322 protrudes from the CPU substrate facing surface 250A is referred to as a protrusion height 327X. Furthermore, the welding portion 321 passes through the notch 308 and reaches the welding connection inspection hole 302. In detail, the horizontal extension portion 321A of the welding portion 321 extends in the notch 308 in the width direction, and the bent portion 321B is located in the welding connection inspection hole 302. In this state, when the press-fit portion 320 is in contact with the separation wall 303 of the housing 250, the welding portion 321 and the electrical contact spring member 322 are not in contact with the housing 250.

[0289] Fig.15 The welding portion 321 is connected to the corresponding pad 215 of the input-output substrate 203 by welding. Fig.15As shown, when the welding portion 321 is connected to the pad 215 by welding, the welding fillet 330 is formed between the pad 215 and the bent portion 321B of the welding portion 321. Generally speaking, once the welding fillet 330 is formed, the welding portion 321 is considered to be normally welded to the pad 215. Accordingly, in this embodiment, the housing 250 is provided with a welding connection inspection hole 302, so that the formation of the welding fillet 330 can be inspected from above through the welding connection inspection hole 302. After the connector 202 is surface mounted on the input-output substrate 203, it can be used to determine whether the welding connection of each contact 300 is successfully formed.

[0290] In this embodiment, as described above, a separation wall 303 is formed to separate the press-fit space 301 from the weld connection inspection hole 302. The presence of the separation wall 303 prevents scraps of the housing 250 from moving into the weld connection inspection hole 302, which may be generated when the press-fit portion 320 is press-fitted into the press-fit space 301. Accordingly, the weld fillet 330 is easily confirmed from above through the weld connection inspection hole 302.

[0291] like Figure 1 and Figure 2 As shown in the above, when the CPU substrate 201 is pressed against the connector 202 by using the first bolt 211 and the second bolt 212, Fig.15 The contact portion 327 of the electrical contact spring member 322 of each contact member 300 shown in the figure elastically displaces downward, and then, Figure 2 The plurality of pads on the connector facing surface 201A of the CPU substrate 201 shown in FIG. Figure 3 The CPU substrate facing surface 250A of the housing 250 of the connector 202 is in surface contact with each other. At this time, the connector facing surface 201A of the CPU substrate 201 is not in contact with the first pressing member 252 and the like.

[0292] Thereafter, when the CPU substrate 201 is further pressed against the connector 202 by using the first bolt 211 and the second bolt 212, the first shielding gasket 206A of the connector facing surface 201A of the CPU substrate 201 contacts the pressing piece spring 252P of the first pressing piece 252, and the spring 252P of the first pressing piece 252 is elastically displaced downward. Figure 8 The soldering portion 252B shown slides on the first press fitting groove 270 and moves downward relative to the first press member 252. Finally, the connector facing surface 201A of the CPU substrate 201 is received in the reinforcing plate portion 252A of the first press member 252, etc., which is soldered to the input / output substrate 203. Accordingly, the downward movement of the housing 250 relative to the first press member 252, etc. is restricted.

[0293] The first embodiment is described above. The first embodiment has the following features.

[0294] like Figure 1 and Figure 2 As shown, the connector 202 (board-to-board connector) is installed on the input-output substrate 203 (first substrate). The connector 202 is built between the input-output substrate 203 and the CPU substrate 201 (second substrate), and accordingly, the plurality of pads 215 of the input-output substrate 203 and the plurality of pads 206 of the CPU substrate 201 are electrically connected to each other. The connector 202 includes: a flat shell 250, a plurality of contacts 300 fixed on the shell 250, and a first pressure piece 252 etc. (pressure piece) made of metal. The shell 250 includes: a CPU substrate opposing surface 250A (second substrate opposing surface) facing the CPU substrate 201. On the CPU substrate opposing surface 250A are formed: a first pressure piece accommodating recess 280 etc. (pressure piece accommodating recess). As shown Figures 7 to 12 As shown, the first pressing member 252 includes: a welding portion 252B, a reinforcing plate portion 252A, and a pressing member spring 252P. The welding portion 252B can be connected to the corresponding pad 216 of the input-output substrate 203 by welding. The reinforcing plate portion 252A is received in the first pressing member receiving recess 280 and covers the inner bottom surface 280A of the first pressing member receiving recess 280. The pressing member spring 252P is supported by the reinforcing plate portion 252A in a cantilever beam shape. The pressing member spring 252P includes: a spring body 252Q and a bent contact portion 252R (contact portion). The spring body 252Q extends from the reinforcing plate portion 252A. The bent contact portion 252R is formed at one end of the spring body 252Q and protrudes toward the CPU substrate 201 beyond the CPU substrate opposing surface 250A. The housing 250 is formed in the following manner: when the curved contact portion 252R is elastically displaced toward the input-output substrate 203, so that the curved contact portion 252R no longer protrudes toward the CPU substrate 201 beyond the CPU substrate facing surface 250A, the curved contact portion 252R does not contact the housing 250. In this structure, the flexible elastic displacement of the curved contact portion 252R is achieved. The same applies to the second pressing member receiving recess 281, etc.

[0295] Furthermore, if Fig.10 As shown, the contact portion recess 280B facing the bent contact portion 252R in the vertical direction is formed on the inner bottom surface 280A of the first pressing member receiving recess 280. In this structure, the following structure is implemented in a simplified manner: when the bent contact portion 252R elastically displaces toward the input-output substrate 203 so that the bent contact portion 252R no longer protrudes toward the CPU substrate 201 beyond the CPU substrate facing surface 250A, the bent contact portion 252R does not contact the housing 250. The same applies to the second pressing member receiving recess 281, etc.

[0296] Furthermore, if Figures 10 to 12As shown, the contact portion recess 280B is formed in the following manner: when the bent contact portion 252R elastically displaces toward the input-output substrate 203, so that the bent contact portion 252R no longer protrudes toward the CPU substrate 201 beyond the CPU substrate facing surface 250A, the bent contact portion 252R does not contact the inner bottom surface 280C of the contact portion recess 280B. In this structure, the following structure is implemented in a more simplified manner: when the bent contact portion 252R elastically displaces toward the input-output substrate 203, so that the bent contact portion 252R no longer protrudes toward the CPU substrate 201 beyond the CPU substrate facing surface 250A, the bent contact portion 252R does not contact the housing 250. The same applies to the second pressing member receiving recess 281, etc.

[0297] It should be noted that a hole or notch may be formed on the inner bottom surface 280A of the first pressing member receiving recess 280 to replace the contact portion recess 280B, and the hole or notch is vertically opposite to the curved contact portion 252R and vertically penetrates the housing 250. In this case, the following structure may be implemented in a simplified manner: when the curved contact portion 252R elastically displaces toward the input-output substrate 203 so that the curved contact portion 252R no longer protrudes toward the CPU substrate 201 beyond the CPU substrate facing surface 250A, the curved contact portion 252R does not contact the housing 250.

[0298] Furthermore, if Fig.10 As shown, the spring body 252Q of the pressing spring 252P extends parallel to the CPU substrate facing surface 250A.

[0299] Furthermore, if Fig.10 As shown, the bent contact portion 252R is formed to be convexly bent toward the CPU substrate 201. In this structure, a high connection reliability between the bent contact portion 252R and the corresponding first shielding pad 206A of the CPU substrate 201 is achieved.

[0300] Furthermore, if Fig.15 As shown, each contact member 300 includes: an electrical contact spring member 322 protruding from the CPU substrate facing surface 250A toward the CPU substrate 201. When the electrical contact spring member 322 of each contact member 300 is not in contact with the corresponding pad 206 of the CPU substrate 201, the protruding height 327X of the electrical contact spring member 322 from the CPU substrate facing surface 250A is greater than: Fig.11 The protrusion height 252X of the pressing piece 252P from the CPU substrate facing surface 250A is shown when the pressing piece 252P of the first pressing piece 252 is not in contact with the corresponding first shielding pad 206A of the CPU substrate 201. In this structure, a wiping effect is effectively achieved between the electrical contact spring element 322 and the corresponding pad 206 of the CPU substrate 201.

[0301] It should be noted that the connector 202 includes a plurality of pressing members including a first pressing member 252, etc. Alternatively, the connector 202 may include only one pressing member.

[0302] The first technical concept: No. 0170

[0303] Furthermore, as Figure 1 and Figure 2 shown, the connector 202 (board-to-board connector) is mounted on the input / output substrate 203 (first substrate). The connector 202 is built in between the input / output substrate 203 and the CPU substrate 201 (second substrate). Accordingly, a plurality of pads 215 on the input / output substrate 203 and a plurality of pads 206 on the CPU substrate 201 are electrically connected to each other respectively. As Figure 6 shown, the connector 202 includes: a rectangular flat plate-shaped housing 250 having a first positioning hole 209 and a second positioning hole 210, and a contact row 251A (first contact row) and a contact row 251F (second contact row) fixed to the housing 250. The housing 250 includes a first spacing side surface 262 (first side surface) and a second spacing side surface 263 (second side surface), and the second spacing side surface 263 is the opposite side of the first spacing side surface 262. The contact row 251A and the contact row 251F extend from the first spacing side surface 262 to the second spacing side surface 263. The first positioning hole 260 is provided between the first spacing side surface 262 and the contact row 251A, and the second positioning hole 261 is provided between the first spacing side surface 262 and the contact row 251F. In this structure, the first positioning hole 260 and the second positioning hole 261 are concentrated on the side of the first spacing side surface 262, which helps to reduce the size of the connector 202.

[0304] Furthermore, as Figure 6 shown, the connector 202 further includes a contact row 251D (third contact row), and the contact row 251D is provided between the contact row 251A and the contact row 251F and extends from the first spacing side surface 262 to the second spacing side surface 263. The distance D1 between the contact row 251A and the first spacing side surface 262, the distance D2 between the contact row 251F and the first spacing side surface 262, and the distance D3 between the contact row 251D and the first spacing side surface 262 satisfy the relationship of D3 < D1 and D3 < D2. This structure can increase the number of contacts 300 by using the space between the first positioning hole 260 and the second positioning hole 261.

[0305] Furthermore, as Figure 6As shown, a first nut notch 271 (notch) open toward the first spacing side 262 is formed between the first positioning hole 260 and the second positioning hole 261. This structure allows the first nut notch 271 to be formed by using the space between the first positioning hole 260 and the second positioning hole 261, which helps to reduce the size of the connector 202.

[0306] Furthermore, if Figure 6 As shown, the distance E1 between the contact row 251A and the second spacing side 263, the distance E2 between the contact row 251F and the second spacing side 263, and the distance E3 between the contact row 251D and the second spacing side 263 satisfy the relationship of E3>E1 and E3>E2. This structure leaves a space between the contact row 251A and the contact row 251F near the second spacing side 263. For example, this space can be used to form the second nut notch 274.

[0307] Furthermore, if Figure 7 and Figure 8 As shown, the connector 202 further includes: a first pressing member 252 (reinforcement member) made of metal. The housing 250 includes: a CPU substrate facing surface 250A facing the CPU substrate 201. The first pressing member 252 includes: a reinforcing plate portion 252A covering the CPU substrate facing surface 250A around the first positioning hole 260. This structure suppresses the enlargement deformation of the first positioning hole 260 through the first pressing member 252, thereby avoiding a significant decrease in positioning accuracy caused by the first positioning hole 260. The same applies to the second pressing member 253.

[0308] Furthermore, if Figure 8 As shown, when viewed from above, the first pressing member 252 is arranged in a manner that the reinforcing plate portion 252A of the first pressing member 252 does not cover the inner edge 260A of the first positioning hole 260. In this structure, the positioning function performed by the first positioning hole 260 is not hindered by the first pressing member 252. The same applies to the second pressing member 253.

[0309] Furthermore, if Figure 4 As shown, each contact element column 251 includes a plurality of contact elements 300. Fig.12 As shown, each contact member 300 includes an electrical contact spring member 322 protruding upward from the CPU substrate facing surface 250A. Figure 5 As shown, the first pressing member receiving recess 280 (receiving recess) for receiving the reinforcing plate portion 252A of the first pressing member 252 is formed on the CPU substrate facing surface 250A of the housing 250. In this structure, the reinforcing plate portion 252A of the first pressing member 252 does not protrude upward beyond the CPU substrate facing surface 250A, and accordingly, the downward elastic deformation of the electrical contact spring member 322 is not hindered. The same applies to the second pressing member 253, the third pressing member 254, and the fourth pressing member 255.

[0310] Furthermore, if Figure 8 As shown, the first pressing member 252 further includes a welding portion 252B, which protrudes from the reinforcing plate portion 252A of the first pressing member 252 toward the input-output substrate 203 and can be connected to the pad 215 of the input-output substrate 203 by welding. According to this structure, when the CPU substrate 201 is pressed relative to the connector 202 to move the housing 250 downward relative to the first pressing member 252, the first pressing member 252 receives the CPU substrate 201, thereby limiting further movement of the CPU substrate 201. The same applies to the second pressing member 253, the third pressing member 254, and the fourth pressing member 255.

[0311] Second Technical Concept, No. 0174

[0312] like Figure 1 and Figure 2 As shown, the connector 202 (board-to-board connector) is mounted on the input-output substrate 203 (first substrate). The connector 202 is built between the input-output substrate 203 and the CPU substrate 201 (second substrate), thereby electrically connecting the plurality of pads 215 of the input-output substrate 203 and the plurality of pads 206 of the CPU substrate 201. Figures 3 to 5 As shown, the connector 202 includes: a flat housing 250 having a first positioning hole 209 and a second positioning hole 210 and made of insulating resin, a plurality of contact members 300 fixed on the housing 250, and a first pressing member 252 and a second pressing member 253 made of metal corresponding to the first positioning hole 260 and the second positioning hole 261 respectively. The housing 250 includes: a CPU substrate facing surface 250A (second substrate facing surface) facing the CPU substrate 201. Figure 8 As shown, the first pressing member 252 includes: a reinforcing plate portion 252A covering the CPU substrate facing surface 250A around the first positioning hole 260. Fig. 9 As shown, the second pressing member 253 includes: a reinforcing plate portion 253A covering the CPU substrate facing surface 250A around the second positioning hole 261. This structure suppresses the expansion deformation of the first positioning hole 260 through the first pressing member 252, thereby avoiding a significant decrease in positioning accuracy caused by the first positioning hole 260. The same applies to the second pressing member 253. Furthermore, as Figure 8 As shown, when viewed from above, the first pressing member 252 is arranged in a manner that the reinforcing plate portion 252A of the first pressing member 252 does not cover the inner edge 260A of the corresponding first positioning hole 260. In this structure, the positioning function exerted by the first positioning hole 260 is not hindered by the first pressing member 252. The same applies to the second pressing member 253.

[0313] Furthermore, if Fig.12As shown, each contact member 300 includes an electrical contact spring member 322 protruding upward from the CPU substrate facing surface 250A. Figure 5 As shown, the first pressing member receiving recess 280 (receiving recess) for receiving the reinforcing plate portion 252A of the first pressing member 252 is formed on the CPU substrate facing surface 250A of the housing 250. In this structure, the reinforcing plate portion 252A of the first pressing member 252 does not protrude upward beyond the CPU substrate facing surface 250A, and accordingly, the downward elastic deformation of the electrical contact spring member 322 is not hindered. The same applies to the second pressing member 253.

[0314] Furthermore, if Figure 8 As shown, the first positioning hole 260 is a circular hole. The reinforcing plate portion 252A of the first pressing piece 252 has a through hole 252C (circular hole) that is larger than the first positioning hole 260. When viewed from above, the first pressing piece 252 is arranged in a manner that the inner edge 260A of the first positioning hole 260 is located radially inward relative to the inner edge 252D of the through hole 252C. According to this structure, the structure in which the reinforcing plate portion 252A of the first pressing piece 252 does not cover the inner edge 260A of the corresponding first positioning hole 260 is achieved in a reasonable manner.

[0315] Furthermore, refer to Fig. 9 , the second positioning hole 261 has an inner edge 261A, and the inner edge 261A includes two straight edge portions 261B parallel to each other. The reinforcing plate portion 253A of the second pressing piece 253 has a through hole 253C (hole), and the through hole 253C has an inner edge 253D, and the inner edge 253D includes two straight edge portions 253E parallel to each other. The distance 253F between the two straight edge portions 253E of the reinforcing plate portion 253A of the second pressing piece 253 is greater than the distance 261C between the two straight edge portions 261B of the second positioning hole 261. When viewed from above, the second pressing piece 253 is arranged in a manner that the two straight edge portions 261B of the second positioning hole 261 are located between the two straight edge portions 253E of the reinforcing plate portion 253A of the second pressing piece 253. According to this structure, a structure in which the reinforcing plate portion 253A of the second pressing piece 253 does not cover the inner edge 261A of the corresponding second positioning hole 261 is achieved in a reasonable manner.

[0316] Furthermore, if Figure 8As shown, the first pressing member 252 further includes a welding portion 252B, which protrudes from the reinforcing plate portion 252A of the first pressing member 252 toward the input-output substrate 203 and can be connected to the pad 215 of the input-output substrate 203 by welding. According to this structure, when the CPU substrate 201 is pressed relative to the connector 202 to move the housing 250 downward relative to the first pressing member 252, the first pressing member 252 receives the CPU substrate 201, thereby limiting further movement of the CPU substrate 201. The same applies to the second pressing member 253.

[0317] Third Technical Concept, No. 0166

[0318] like Figure 1 and Figure 2 As shown, the connector 202 is mounted on the input / output substrate 203 (first substrate). The connector 202 includes: a flat housing 250 made of insulating resin, and a contact 300 fixed to the housing 250 by press-fitting. Fig.15 As shown, the housing 250 includes a press-fit space 301 and a solder connection inspection hole 302. The contact 300 includes a press-fit portion 320 and a soldering portion 321, the press-fit portion 320 is press-fitted into the press-fit space 301, and the soldering portion 321 extends from the press-fit portion 320 and can be connected to the pad 215 of the input-output substrate 203 by soldering. The solder connection inspection hole 302 is formed to penetrate the housing 250 in the vertical direction, and allows a solder fillet 330 to be inspected through the solder connection inspection hole 302, the solder fillet 330 being formed when the soldering portion 321 is soldered to the pad 215 of the input-output substrate 203. The housing 250 includes a separation wall 303, the separation wall 303 separating the press-fit space 301 from the solder connection inspection hole 302. In this structure, the presence of the separation wall 303 prevents the scraps of the housing 250 from moving into the weld connection inspection hole 302, which may be generated when the press-fit portion 320 is press-fitted into the press-fit space 301. Accordingly, the weld fillet 330 is easily confirmed from above through the weld connection inspection hole 302.

[0319] Furthermore, if Fig.15 As shown, the press-fit portion 320 is configured to engage with the spacing separation surface 304 (surface), which is the inner surface of the press-fit space 301 and is different from the first separation surface 306 (surface) constituting the separation wall 303. In this structure, when the press-fit portion 320 is press-fitted into the press-fit space 301, no load is imposed on the separation wall 303. This alleviates the limitation on the strength design of the separation wall 303.

[0320] Furthermore, if Fig.15As shown, the bent portion 321B of the welding portion 321 is located in the welding connection inspection hole 302. This structure allows the boundary between the welding fillet 330 and the contact member 300 to be inspected through the welding connection inspection hole 302, thereby achieving a more accurate determination of whether the welding portion 321 is successfully welded.

[0321] It should be noted that Fig.15 , the continuity between the contact 300 and the pad 215 can be checked by inserting a probe into the solder connection inspection hole 302, bringing the probe into contact with the bent portion 321B of the solder portion 321, and further bringing another probe into contact with the circuit pattern of the input-output substrate 203, the circuit pattern being electrically continuous with the pad 215. In this case, as described above, it is also possible to prevent scraps of the housing 250 from moving into the solder connection inspection hole 302, so that the probe easily comes into contact with the bent portion 321B of the solder portion 321, which may be generated when the press-fit portion 320 is press-fitted into the press-fit space 301.

[0322] Second embodiment

[0323] The following reference Fig.17 The second embodiment is described below. The differences between this embodiment and the first embodiment are mainly described below, and repeated descriptions are omitted.

[0324] In the first embodiment described above, if Figures 1 to 5 As shown, a first nut notch 271 for avoiding physical interference between the first nut 231 and the housing 250 is formed on the housing 250. Similarly, a second nut notch 274 for avoiding physical interference between the second nut 232 and the housing 250 is formed on the housing 250.

[0325] On the other hand, in this embodiment, if Fig.17 As shown, the first nut through hole 380 for avoiding physical interference between the first nut 231 and the housing 250 is formed on the housing 250 instead of the first nut notch 271 described above. Similarly, the second nut through hole 381 for avoiding physical interference between the second nut 232 and the housing 250 is formed on the housing 250 instead of the second nut notch 274 described above.

[0326] Furthermore, in the first embodiment described above, if Figure 4 As shown, the connector 202 includes a first pressing member 252, a second pressing member 253, a third pressing member 254, and a fourth pressing member 255. The first pressing member 252, the second pressing member 253, the third pressing member 254, and the fourth pressing member 255 are separate components.

[0327] On the other hand, in this embodiment, if Fig.17As shown, the first pressing member 252, the second pressing member 253, the third pressing member 254, and the fourth pressing member 255 are formed as an integral part, whereby they are continuous with each other. In this way, by forming the first pressing member 252, the second pressing member 253, the third pressing member 254, and the fourth pressing member 255 into one part, a high electromagnetic shielding effect is obtained.

[0328] In detail, the connector 202 includes an integral pressing member 382 (pressing member). The integral pressing member 382 includes a first pressing member 252, a second pressing member 253, a third pressing member 254, and a fourth pressing member 255. When viewed from above, the integral pressing member 382 is formed in a ring shape to surround the plurality of contact members 300. The integral pressing member 382 includes: a reinforcing plate portion 383, a plurality of welding portions 384, and a plurality of pressing member springs 400.

[0329] The first integral pressing member accommodating recess 401 (pressing member accommodating recess) and the second integral pressing member accommodating recess 402 (pressing member accommodating recess) are formed on the CPU substrate facing surface 250A of the housing 250 .

[0330] When viewed from above, the first integral pressing piece receiving recess 401 is formed in a U-shape to surround the first nut through hole 380. The inner bottom surface 401A of the first integral pressing piece receiving recess 401 has two contact portion recesses 401B. Each contact portion recess 401B has an inner bottom surface 401C.

[0331] When viewed from above, the second integral pressing piece receiving recess 402 is formed in a U-shape to surround the second nut through hole 381. The inner bottom surface 402A of the second integral pressing piece receiving recess 402 has two contact portion recesses 402B. Each contact portion recess 402B has an inner bottom surface 402C.

[0332] The reinforcing plate portion 383 is a portion covering the inner bottom surface 401A of the first integral pressing member accommodating recess 401 and the inner bottom surface 402A of the second integral pressing member accommodating recess 402. The reinforcing plate portion 383 includes: the reinforcing plate portion 252A of the first pressing member 252, the reinforcing plate portion 253A of the second pressing member 253, the reinforcing plate portion 254A of the third pressing member 254, and the reinforcing plate portion 255A of the fourth pressing member 255.

[0333] The plurality of soldering portions 384 may be connected to corresponding pads of the input-output substrate 203 by soldering. The plurality of soldering portions 384 include a first soldering portion 385, a second soldering portion 386, a third soldering portion 387, and a fourth soldering portion 388.

[0334] The first welding portion 385 corresponds to the first spacing side surface 262 of the housing 250 .

[0335] The second welding portion 386 corresponds to the second spacing side surface 263 of the housing 250 .

[0336] The third welding portion 387 corresponds to the first width side 264 of the housing 250 .

[0337] The fourth welding portion 388 corresponds to the second width side 265 of the housing 250 .

[0338] The plurality of pressing piece spring pieces 400 include four pressing piece spring pieces 400. The four pressing piece spring pieces 400 are respectively arranged to face the inner bottom surfaces 401C of the two contact portion recesses 401B and the inner bottom surfaces 402C of the two contact portion recesses 402B in the vertical direction. Each pressing piece spring piece 400 extends in the spacing direction. The pressing piece spring piece 400 arranged on the first pressing piece 252 and the pressing piece spring piece 400 arranged on the third pressing piece 254 extend to be close to each other. The pressing piece spring piece 400 arranged on the second pressing piece 253 and the pressing piece spring piece 400 arranged on the fourth pressing piece 255 extend to be close to each other.

[0339] Since the description is the same as the above description, the description of other structures of each pressing piece spring 400 and the description of the technical relationship between each pressing piece spring 400 and each contact portion recess 401B or each contact portion recess 402B are omitted.

[0340] It should be noted that the first welding portion 385 may have a plurality of slits that divide the first welding portion 385 in the width direction. Similarly, the second welding portion 386 may have a plurality of slits that divide the second welding portion 386 in the width direction. Similarly, the third welding portion 387 may have a plurality of slits that divide the third welding portion 387 in the width direction. Similarly, the fourth welding portion 388 may have a plurality of slits that divide the fourth welding portion 388 in the width direction. As described above, forming a plurality of slits that divide each welding portion 384 in the length direction of each welding portion 384 can, for example, absorb the warping of the input-output substrate 203, which helps to reduce the size of the connector 202.

[0341] The above embodiments can be combined according to needs by those having ordinary knowledge in the technical field.

[0342] From the disclosure thus described, it is obvious that the embodiments herein may be modified in various ways. Such changes should not be regarded as a departure from the spirit and scope of the present disclosure, and all such modifications as would be obvious to one skilled in the art are intended to be included within the scope of the following claims.

Claims

1. A board-to-board connector, characterized in that: The board-to-board connector is mounted on a first substrate and built between the first substrate and a second substrate to electrically connect a plurality of pads of the first substrate with a plurality of pads of the second substrate, respectively. The board-to-board connector includes: A flat shell; A plurality of contact members, wherein the plurality of contact members are fixed on the housing; as well as A pressing piece, wherein the pressing piece is made of metal; wherein, The housing comprises: a second substrate-facing surface, the second substrate-facing surface facing the second substrate; and A pressing piece receiving recess, wherein the pressing piece receiving recess is formed on the second substrate facing surface; The pressing piece comprises: a welding portion connectable to a corresponding pad of the first substrate by welding; a reinforcing plate portion, the reinforcing plate portion being received in the pressing piece receiving recess and covering an inner bottom surface of the pressing piece receiving recess; and A pressure piece spring, wherein the pressure piece spring is supported by the reinforcing plate in a cantilever beam shape, The pressing piece spring comprises: a spring body and a contact portion, wherein the spring body extends from the reinforcing plate portion, the contact portion is formed at one end of the spring body and protrudes toward the second substrate beyond the second substrate opposing surface, and, The housing is formed in the following manner: when the contact portion is elastically displaced toward the first substrate so that the contact portion no longer protrudes toward the second substrate beyond the second substrate facing surface, the contact portion is not in contact with the housing.

2. The board-to-board connector according to claim 1, wherein: A contact portion recess is formed on the inner bottom surface of the presser accommodating recess, and the contact portion recess faces the contact portion in the thickness direction of the housing.

3. The board-to-board connector according to claim 2, wherein: The contact portion recess is formed in the following manner: when the contact portion is elastically displaced toward the first substrate so that the contact portion no longer protrudes toward the second substrate beyond the second substrate facing surface, the contact portion does not contact the inner bottom surface of the contact portion recess.

4. The board-to-board connector according to claim 1, wherein: A hole or a notch is formed on the inner bottom surface of the pressing piece accommodating recess, the hole or the notch faces the contact portion in the thickness direction of the shell and penetrates the shell in the thickness direction of the shell.

5. The board-to-board connector according to claim 1, wherein: The spring sheet body of the pressing element spring sheet extends parallel to the second substrate opposing surface.

6. The board-to-board connector according to claim 1, wherein: The contact portion is formed to be curved in a convex shape toward the second substrate.

7. The board-to-board connector according to claim 1, wherein: Each of the contact members includes an electrical contact spring member, the electrical contact spring member protrudes from the second substrate-opposing surface toward the second substrate, and, When the electrical contact spring member is not in contact with the corresponding pad of the second substrate, the protruding height of the electrical contact spring member of each contact member from the opposite surface of the second substrate is greater than: when the pressure member spring piece is not in contact with the corresponding pad of the second substrate, the protruding height of the pressure member spring piece of the pressure member from the opposite surface of the second substrate.

8. The board-to-board connector according to any one of claims 1 to 7, characterized in that: The pressing piece is formed in a ring shape to surround the contact piece when viewed from a thickness direction of the housing.

9. The board-to-board connector according to claim 8, wherein: The pressing piece includes a plurality of pressing piece springs.

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