CN212676494U - Board-to-board socket and connector assembly - Google Patents

Abstract

A board-to-board socket comprises a socket body, socket terminals and a socket reinforcing piece, wherein the socket body comprises a bottom wall, socket side walls formed by upwards protruding from the longitudinal two ends of the bottom wall, socket guide parts formed at the transverse two ends of the socket body and island parts formed by upwards protruding from the bottom wall, the socket guide includes a plug guide receiving cavity, a longitudinal peripheral wall located laterally outside the plug guide receiving cavity, and a pair of lateral peripheral walls located on both longitudinal sides of the plug guide receiving cavity, the socket reinforcement includes cover in the main part on vertical periphery wall surface, certainly the vertical both sides of main part extend along the transverse direction cover in the outer horizontal periphery wall of horizontal periphery wall covers the portion, certainly the elasticity arm that the top of horizontal periphery wall covers the portion and turns over the extension formation inwards and certainly horizontal periphery wall covers the portion bend with the fixed tip of printed circuit board welded fastening. The present application further provides a board-to-board connector assembly.

Description

Board-to-board socket and connector assembly

Technical Field

The present application relates to the field of electrical connectors, and more particularly, to a board-to-board socket and connector assembly.

Background

Board-to-board connector assemblies are widely used in the consumer electronics field, such as smart phones, tablet computers, wearable devices, and the like. Present smart mobile phone and wearable equipment all require extremely high to the space, the size of spare part is reducing equally, a ray of board has reached 0.6 mm's minimum height to the board after board-to-board plug and the socket cooperation of board-to-board producer, the terminal interval has also reached 0.25 mm's distance, so small connector, higher requirement has been proposed to connector structural strength, and compare in traditional board to board connector component, the large-scale function integration of current smart mobile phone, propose higher requirement to electric current bearing capacity, require to reach 5A's bearing capacity to electric current transmission like the LCD screen, traditional board can't adapt to present market to intensity and electric current transmission's requirement to board connector component design.

Disclosure of Invention

In view of the above, it is desirable to provide a board-to-board socket that maintains a stable retention of the socket stiffener to the printed circuit board at various locations.

In order to solve the technical problem, the application provides a board to board socket, including socket ontology, socket terminal and socket reinforcement, socket ontology includes the diapire, certainly the vertical both ends of diapire upwards bulge the socket lateral wall that forms, form in the socket guide portion at the horizontal both ends of socket ontology reaches certainly the diapire upwards bulges and forms island portion, its characterized in that, socket guide portion includes plug guide portion receiving chamber, is located the vertical periphery wall in the horizontal outside of plug guide portion receiving chamber and is located a pair of horizontal periphery wall in the vertical both sides of plug guide portion receiving chamber, socket reinforcement is including covering in the main part on vertical periphery wall surface, certainly the vertical both sides of main part are bent and are followed the horizontal direction and extend to cover in the outer horizontal periphery wall of horizontal periphery wall cover portion and certainly the horizontal periphery wall top inwards turns over the elasticity arm that forms of rolling over, the socket reinforcement further comprises a fixing end portion formed by bending and extending the free end of the covering portion of the transverse peripheral wall towards the plug guide receiving cavity, and the fixing end portion comprises a welding portion which downwards penetrates through the socket body and is welded on the printed circuit board.

Preferably, the horizontal periphery wall of socket ontology includes the support shoulder and is located support shoulder longitudinal inside intercommunication the elasticity of plug guide portion receiving chamber dodges the portion, the elasticity arm is from horizontal periphery wall cover portion top is turned over to roll over and is spanned and get into behind the support shoulder elasticity dodges in the portion and at least part is located plug guide portion receiving chamber.

Preferably, the longitudinal outer side of the supporting shoulder is provided with an installation step part, a communication groove communicated with the installation step part is formed between the supporting shoulder and the socket side wall, the cover part of the transverse outer peripheral wall extends on the installation step part, and the fixed end part extends into the communication groove.

Preferably, the communication groove penetrates through the socket body downwards, and the welding part of the fixed end part penetrates through the socket body downwards and then is welded with the printed circuit board.

Preferably, a bridging wall is formed at the position of the elastic avoiding part of the support shoulder part, the longitudinal inner side of the bridging wall is recessed to form the elastic avoiding part, and the top surface of the bridging wall is lower than that of the support shoulder part.

Preferably, the elastic arm portion includes a bridging portion bent reversely from the top of the transverse peripheral wall covering portion and bridging over the bridging wall, an inclined arm portion extending from the bridging portion to the plug guide receiving cavity, and a contact point formed at a bottom end of the inclined arm portion, and the contact point is at least partially located in the plug guide receiving cavity.

Preferably, the contact point is formed by bending downward from the inclined arm portion vertically or bending toward the bridging wall.

Preferably, the horizontal both ends of island portion are equipped with horizontal position and are less than the island portion by the protection portion, the socket reinforcement still includes certainly the horizontal inboard downward bending of main part and extend to by protection portion and cover by the central guide portion of protection portion, central guide portion include certainly the horizontal inboard downward bending of main part forms first central guide arm, certainly first central guide arm bottom bend and extend to by the support base arm of protection portion one side, certainly support base arm slant upwards extend to by the second central guide arm of protection portion top and certainly the second central guide arm free end bends downwards and blocks into the card tip of being in the protection portion.

Preferably, stepped portions are provided at both longitudinal ends of the longitudinal peripheral wall on a side close to the plug guide receiving cavity, a longitudinal width of an upper end of the first central guide arm is greater than a longitudinal width of a lower end of the first central guide arm, and bottoms of both longitudinal ends of the upper end of the first central guide arm are correspondingly located above the stepped portions.

In order to solve the above technical problem, the present application further provides a board-to-board connector assembly, which comprises a socket and a plug matched with the socket, wherein the plug comprises a plug body, a plug terminal and a plug reinforcing member, the plug body comprises a top wall, plug side walls formed by downward extending from the longitudinal two ends of the top wall, plug guide portions formed at the transverse two ends of the plug body, and an island receiving cavity located between the plug side walls and the plug guide portions, the socket comprises a socket body, a socket terminal and a socket reinforcing member, the socket body comprises a bottom wall, socket side walls formed by upward protruding from the longitudinal two ends of the bottom wall, socket guide portions formed at the transverse two ends of the socket body, an island formed by upward protruding from the bottom wall, and a plug side wall receiving cavity formed between the island portions and the socket side walls, socket guide portion includes plug guide portion and receives the chamber, is located the vertical periphery wall in the horizontal outside in plug guide portion receipt chamber and be located a pair of horizontal periphery wall of the vertical both sides in plug guide portion receipt chamber, the socket reinforcement including cover in the main part on vertical periphery wall surface, certainly the vertical both sides of main part extend along horizontal direction cover in the outer horizontal periphery wall covers the portion and certainly horizontal periphery wall covers the portion top and inwards turns over the elasticity arm that extends the formation, the socket reinforcement still includes certainly horizontal periphery wall covers a free end orientation the fixed tip that the chamber was bent and is extended formation is received to plug guide portion, fixed tip includes and passes through downwards socket body and welds the welding part on printed circuit board.

This application board is to socket and connector assembly, through running through from top to bottom socket ontology's intercommunication groove, the free end of the horizontal periphery wall covering portion of socket reinforcement is bent and is formed and extend to fixed tip in the intercommunication inslot, fixed tip passes through including downwards intercommunication the intercommunication groove and with printed circuit board welded weld part, has increased the stability of socket reinforcement.

Drawings

The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the application and together with the description serve to explain the application and not to limit the application.

FIG. 1 is an assembled view of a board-to-board connector assembly embodying the present invention;

FIG. 2 is a cross-sectional view taken along line A-A of FIG. 1;

FIG. 3 is a perspective assembly view of a board-to-board plug embodying the present invention;

fig. 4 is a perspective view of a plug body of a board-to-board plug embodying the present invention and a partially enlarged view thereof;

FIG. 5 is a perspective view of a header reinforcement member for a board-to-board header embodying the present invention;

fig. 6 is a perspective view of another angle of the header reinforcement of the board-to-board header embodying the present invention;

FIG. 7 is a perspective assembly view of a board-to-board socket according to the present application;

fig. 8 is a perspective view of a socket body of a board-to-board socket according to the present invention and a partially enlarged view thereof;

FIG. 9 is a perspective view of a socket stiffener embodying the board-to-board socket of the present application;

FIG. 10 is a perspective view of another angle of the socket stiffener for a board-to-board socket embodying the present invention;

FIG. 11 is a top view of a socket stiffener embodying the board-to-board socket of the present application;

fig. 12 is a sectional view taken along the line B-B shown in fig. 1.

Detailed Description

In order to make the objects, technical solutions and advantages of the present application more apparent, the technical solutions of the present application will be described in detail and completely with reference to the following specific embodiments of the present application and the accompanying drawings.

The direction of the present application defines the right direction (or lateral direction) with the X direction shown in fig. 1 as the left-right direction, the front direction (or longitudinal direction) with the Y direction as the front-back direction, and the upper direction (i.e., vertical direction) with the Z direction as the up-down direction.

Referring to fig. 1, the board-to-board connector assembly of the present application includes a plug a attached to a printed circuit board and a socket B attached to another printed circuit board, wherein the plug a and the socket B are in buckled connection with each other.

The plug a comprises a plug body 10, a plurality of plug terminals 20 formed in the plug body 10, and plug reinforcing members 30 fixed to both ends of the plug body 10 in the transverse direction. The socket B includes a socket body 40, socket terminals 50 mounted on the socket body 40, and socket reinforcing members 60 mounted and fixed to both lateral ends of the socket body 40.

Referring to fig. 2 to 6, the plug body 10 of the plug a includes a top wall 11, a pair of plug side walls 12 formed by extending downward from two longitudinal sides of the top wall 11, plug guide portions 14 formed at two lateral ends of the plug body 10, and an island receiving cavity 13 formed between the top wall 11, the pair of plug side walls 12 and the plug guide portions 14.

The plug terminals 20 are integrally formed on a pair of plug side walls 12 in two rows in the lateral direction, and the plug guide portion 14 includes a bottom surface 141, a longitudinal outer side 142, a pair of lateral outer sides 143, and a slope 144 facing the island receiving cavity 13. The longitudinal outer side 142 is provided with a first notch 1421, and the transverse outer side 143 includes two longitudinally protruding protrusions 1431, 1432, a second notch 1433 located between the two protrusions 1431, 1432, and a third notch 1434 located between the protrusion 1432 and the plug side wall 12. The inclined surface 144 is formed with an inclined surface 1441 upwardly extending from the bottom surface 141 to the top wall 11 and a catching hole 1442 concavely formed from the inclined surface 1441 upwardly at a side close to the bottom surface 141.

The plug reinforcement member 30 includes a covering base 31 covering the bottom surface 141 of the plug guide portion 14 along the longitudinal direction, a longitudinal outer side surface covering portion 35 and a longitudinal inner side surface covering portion 34 respectively covering the longitudinal outer side surface 142 and being clamped into the clamping hole 1442, and a transverse outer side surface covering portion 33 covering the transverse outer side surface 143 along the transverse direction, which is formed by upward bending and extending the longitudinal two ends of the covering base 31. The longitudinal outer surface covering 35 is snapped into the first recess 1421.

The transverse outer side surface covering portion 33 includes a contact portion 331 clamped in the second notch 1421, and a solder leg 332 formed by vertically bending towards the longitudinal outer side from the top of one end of the transverse outer side surface covering portion 33 away from the longitudinal outer side surface covering portion 35, the contact portion 331 of the transverse outer side surface covering portion 33 is clamped in the second notch 1433, the solder leg 332 is formed by vertically bending towards the longitudinal outer side after being clamped in the third notch 1434, the transverse outer side surface covering portion 33 is further provided with a bayonet 333 to be clamped in the periphery of the projection 1432, so that the holding force between the plug reinforcing member 30 and the plug guiding portion 14 is enhanced.

Referring to fig. 2, the plug terminal 20 includes a plug terminal solder leg 24 extending from the upper surface of the top wall 11 in the longitudinal direction to the outside of the top wall 11, a plug terminal first contact portion 22 bent from the plug terminal solder leg 24 along the surface of the top wall 11 to the inner side surface of the plug side wall 12, and a plug terminal second contact portion 23 bent from the lower end of the plug terminal first contact portion 22 in the opposite direction and extending to the outer side surface of the plug side wall 12. The second contact portion 23 of the plug terminal is provided with a groove structure.

As shown in fig. 1, 2, 7 and 8, the socket body 40 of the socket B of the board-to-board connector assembly of the present application includes a bottom wall 41, a pair of socket sidewalls 42 extending upward from two longitudinal sides of the bottom wall 41, an island 45 protruding upward from the bottom wall 41 between the pair of socket sidewalls 42, socket guides 44 formed at two lateral ends of the socket body 40, and a plug sidewall receiving cavity 43 formed between the island 45 and the pair of socket sidewalls 42.

The bottom wall of the socket body 40 is provided with a plurality of terminal grooves 46 from bottom to top, the socket terminal 50 is assembled in the terminal grooves 46 upwards, the socket terminal 50 includes a support arm 51 extending in the terminal groove 46 at the bottom wall 41 and exposed at the bottom of the terminal groove 46, a socket terminal second contact portion 52 bent upwards from the longitudinal outer side of the support arm 51 and located on the longitudinal side of the island portion 45 and facing the socket side wall 42, a socket terminal first contact portion 53 bent upwards from the longitudinal inner side of the support arm 51 and located on the longitudinal side of the socket side wall 42, a holding portion 54 bent upwards from the top end of the first contact portion 53, and a solder foot 55 bent vertically from the bottom end of the holding portion 54 and extending towards the longitudinal outer side and located on the lower surface of the bottom wall 41 of the socket body 40.

When the plug a is matched with the socket B, the island portion 45 is accommodated in the island portion receiving cavity 13 of the plug a, the plug side wall 12 of the plug a is accommodated in the plug side wall receiving cavity 43 of the socket B, and the plug guide portion 14 is guided into the socket guide portion 44. The plug terminal 20 is clamped between the first and second contact portions 53 and 52 of the socket terminal 50, and the first and second contact portions 22 and 23 of the plug terminal 20 are electrically contacted with the first and second contact portions 53 and 52 of the socket terminal 50, respectively.

As shown in fig. 8, protected portions 451 are provided at both lateral ends of the island portion 45 toward the socket guide portion 44, and each protected portion 451 includes a mesa portion 453 having a lower horizontal surface than the island portion 45, an escape slope 452 inclined obliquely downward from the mesa portion 453, a catching groove 454 recessed downward from the mesa portion 453, and a communication notch 455 opened laterally outward from the catching groove 454 to communicate with the escape slope 452.

The receptacle guide 44 includes peripheral walls 441, 442 and a plug guide receiving cavity 443 located between the peripheral walls 441, 442. The peripheral wall 441 includes a longitudinal peripheral wall 441 and a pair of lateral peripheral walls 442 connected to both ends of the longitudinal peripheral wall 441, the lateral peripheral walls 442 being adjacent to the receptacle side walls 42.

The plug guide receiving cavity 443 is formed with a through hole 4431 penetrating in the up-down direction corresponding to the lateral extension of the island 45, the through hole 4431 extending up to the lower end of the longitudinal outer peripheral wall 441. The longitudinal outer peripheral wall 441 is provided at the lateral outer side and the lateral inner side thereof with first and second extension grooves 4411, 4412, respectively, and the second extension groove 4412 communicates with the through-hole 4431. The longitudinal peripheral wall 442 protrudes upward from the center to form a support shoulder 4421, a mounting step 4425 is provided on the outer periphery of the support shoulder 4421 to extend in the transverse direction and to be located longitudinally outside the support shoulder 4421, a communication groove 4426 communicating with the mounting step 4425 is formed between the support shoulder 4421 and the receptacle side wall 42, and an elastic avoiding portion 4424 is provided on the inner side in the longitudinal direction of the support shoulder 4421. The support shoulder 4421 is thinner than other portions at the location of the elastic relief 4424 and forms a bridging wall 4422 to form an elastic relief space between the bridging wall 4422 and the plug guide receiving cavity 443. The horizontal position of the top surface of the bridging wall 4422 is lower than the horizontal position of the top surface of the support shoulder 4421. The communication groove 4426 communicates with the mounting stepped portion 4425 and the communication groove 4426 penetrates downward the lateral peripheral wall 442 to communicate with a printed circuit board. Stepped portions 4413 are provided at both longitudinal ends of the longitudinal outer peripheral wall 441 inside the plug guide receiving cavity 443, respectively. The mounting stepped part 4425 partially penetratingly forms a third extending groove 4428 in a vertical direction.

With continued reference to fig. 9 to 12, the socket stiffener 60 includes a main body portion 61 covering the top surface of the longitudinal peripheral wall 441 in the longitudinal direction, a longitudinal peripheral wall covering portion 62 bent downward from the lateral outer end of the main body portion 61 and extending into the first extending groove 4411, a central guide portion 63 bent downward from the lateral inner side of the main body portion 61 and extending to the protected portion 451 at the lateral end of the island portion 45, lateral peripheral wall covering portions 64 bent downward from the longitudinal ends of the main body portion 61 and extending along the mounting step portion 4425 and located longitudinally outside the lateral peripheral wall 442, a fixing end portion 66 bent from the free ends of the lateral peripheral wall covering portions 64 and extending into the communicating groove 4426, and a resilient arm portion 65 bent backward from the top of the lateral peripheral wall covering portions 64 and extending into the resilient escape portion 4424.

The fixing end portion 66 is formed with a soldering portion 67 extending downward at the bottom, and the soldering portion 67 passes downward through the communication groove 4426 and contacts and is soldered to a land of a printed circuit board to increase the strength of the lateral peripheral wall covering portion 64.

The resilient arm portion 65 includes a bridging portion 651 bent back from the top of the lateral peripheral wall cover portion 64 and spanning the bridging wall 4422, a sloping arm portion 652 extending from the bridging portion 651 toward the plug guide receiving cavity 443, and a contact point 653 bent vertically downward from the bottom of the sloping arm portion 652 or toward the lateral peripheral wall cover portion 64. The contact points 653 are located within the plug guide receiving cavity 443 as viewed from above.

The free ends of the longitudinal peripheral wall covering portions 62 are fixed as solder tails to the printed circuit board, and the bottom ends of the lateral peripheral wall covering portions 64 are fixed as solder tails by extending through the third extension grooves 4428 to the printed circuit board.

The central guide portion 63 includes a first central guide arm 631 bent downward from the inside of the main body portion 61, the first central guide arm extending into the second extending groove 4412, a support base arm 632 bent downward from the bottom of the first central guide arm 631 and extending along the through hole 4431 to the bottom of the protected portion 451 on both sides of the island portion 45, a second central guide arm 634 extending upward from the support base arm 632 obliquely above the protected portion 451, and a locking end 635 bent downward from the free end of the second central guide arm 634 and locked into the locking groove 454. The first and second center guide arms 631, 634 are used to guide the insertion of the header reinforcement 30 and protect the longitudinal outer peripheral wall 441 of the socket body 40 and the protected portions 451 at both lateral ends of the island portion 45. The longitudinal outer side surface covering portion 35 and the longitudinal inner side surface covering portion 34 of the plug reinforcement 30 are guided by the first and second central guide arms 631, 634, respectively, and enter between the first and second central guide arms 631, 634 above the support base arm 632, but in the inserted state, the longitudinal outer side surface covering portion 35 and the longitudinal inner side surface covering portion 34 are not in electrical contact with the first and second central guide arms 631, 634. During the insertion process, the support base arm 632 is pressed and the mounted pcb generates a supporting force to make the first and second central guide arms 631 and 634 have a certain elasticity.

The upper end of the first center guide arm 631 has a longitudinal width greater than that of the lower end and stepped portions 4413 are formed at both sides of the upper end of the first center guide arm 631 in the longitudinal direction to abut against the inner side of the longitudinal outer peripheral wall 441. The wider upper end bend of the first central guide arm 631 increases the guidance of the header reinforcement 30 and prevents insertion damage.

In a natural state, the elastic arm portion 65 is located on the elastic avoiding portion 4424 and has a deformation gap with the inner side surface of the bridging wall 4422, and when the elastic arm portion 65 is longitudinally pressed, the contact point 653 of the elastic arm portion 65 is deformed in the deformation gap.

When a plug a is inserted, the lateral outer side surface covering portion 33 of the plug reinforcement 30 first contacts the inclined arm portion 652 of the elastic arm portion 65 and the upper end of the first central guide arm 631, and when the plug reinforcement 30 is further pressed down, the contact 653 is pressed along the longitudinal outer side, so that the contact 653 is elastically deformed toward the inner wall surface of the bridging wall 4422 in the elastic escape portion 4424.

This application board is to board socket and connector assembly, through running through from top to bottom the connecting groove 4426 of socket body, the free end of the horizontal periphery wall cover portion 64 of socket reinforcement 60 is bent and is formed the fixed tip 66 that extends to in the connecting groove 4426, fixed tip 66 includes and passes through downwards connecting groove 4426 and with printed circuit board welded weld part 67, has increased socket reinforcement 60's stability.

In the present specification, the printed circuit board on which the plug a or the socket B is mounted is not limited to a circuit board, and may be any printed circuit board as long as it is compatible with an object provided with a current transmission line.

The above description is only an example of the present application and is not intended to limit the present application. Various modifications and changes may occur to those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application should be included in the scope of the claims of the present application.

Claims (10)

1. A board-to-board socket comprises a socket body, a socket terminal and a socket reinforcing piece, wherein the socket body comprises a bottom wall, a socket side wall formed by upwards protruding two longitudinal ends of the bottom wall, a socket guide part formed at the two transverse ends of the socket body and an island part formed by upwards protruding the bottom wall, and is characterized in that the socket guide part comprises a plug guide part receiving cavity, a longitudinal peripheral wall located at the transverse outer side of the plug guide part receiving cavity and a pair of transverse peripheral walls located at the two longitudinal sides of the plug guide part receiving cavity, the socket reinforcing piece comprises a main body part covering the surface of the longitudinal peripheral wall, an elastic arm part which is bent from the two longitudinal sides of the main body part and extends to cover the transverse peripheral wall covering part outside the transverse peripheral wall and inwards turns over the top end of the transverse peripheral wall covering part to form the elastic arm, the socket reinforcing part is characterized by further comprising a fixing end part formed by bending and extending the free end of the covering part of the transverse peripheral wall towards the plug guiding part receiving cavity, and the fixing end part comprises a welding part which downwards passes through the socket body and is welded on the printed circuit board.

2. The board-to-board socket of claim 1, wherein said lateral peripheral wall of said socket body includes a support shoulder and a resilient relief located longitudinally inboard of said support shoulder and communicating with said plug guide receiving cavity, said resilient arm being folded over from a top end of said lateral peripheral wall covering over said support shoulder and into said resilient relief and located at least partially within said plug guide receiving cavity.

3. The board-to-board socket according to claim 2, wherein a mounting step portion is formed on a longitudinal outer side of the support shoulder portion, a communication groove communicating with the mounting step portion is formed between the support shoulder portion and the socket side wall, the transverse peripheral wall covering portion extends over the mounting step portion, and the fixing end portion extends into the communication groove.

4. The board-to-board socket according to claim 3, wherein said communication slot extends downwardly through said socket body, and wherein said fixed end portion soldering portion extends downwardly through said socket body and is soldered to a printed circuit board.

5. The board-to-board socket of claim 2, wherein said support shoulders form bridging walls at the location of said elastomeric relief, said bridging walls being recessed longitudinally inboard to form said elastomeric relief, the top surfaces of said bridging walls being lower than the top surfaces of said support shoulders.

6. The board-to-board socket of claim 5, wherein said resilient arm includes a bridge portion folded back across said bridging wall from a top of said transverse peripheral wall covering, an inclined arm portion extending from said bridge portion obliquely to said plug guide receiving cavity, and a contact point formed at a bottom end of said inclined arm portion, said contact point being at least partially located in said plug guide receiving cavity.

7. The board-to-board socket of claim 6, wherein the contact point is formed by a downward vertical bend from said inclined arm portion or a bend toward said bridging wall.

8. The board-to-board socket according to claim 1, wherein both lateral ends of the island portion are provided with a protected portion having a lower level than the island portion, the socket reinforcement further comprises a central guide portion bent downward from a lateral inner side of the main body portion and extending to the protected portion and covering the protected portion, the central guide portion comprises a first central guide arm bent downward from the lateral inner side of the main body portion, a support base arm bent from a bottom of the first central guide arm and extending to a side of the protected portion, a second central guide arm extending obliquely upward from the support base arm and extending above the protected portion, and a click-in end portion bent downward from a free end of the second central guide arm and clicking into the protected portion.

9. The board-to-board socket according to claim 8, wherein the longitudinal peripheral wall is provided with a step portion at both longitudinal ends thereof on a side thereof adjacent to said plug guide receiving cavity, the longitudinal width of the upper end of said first central guide arm is greater than the longitudinal width of the lower end of said first central guide arm, and the bottom of the longitudinal ends of the upper end of said first central guide arm is located above said step portion.

10. The utility model provides a board to board connector component, including the socket and with socket complex plug, the plug includes plug body, plug terminal and plug reinforcement, the plug body include the roof, certainly the vertical both ends downwardly extending of roof forms the plug lateral wall, form in the plug guide portion at the horizontal both ends of plug body and be located island portion receiving cavity between plug lateral wall and the plug guide portion, the socket includes socket body, socket terminal and socket reinforcement, the socket body includes the diapire, from the vertical both ends of diapire upwards protrusion form socket side wall, form in the horizontal both ends of socket body socket guide portion, form from the diapire upwards protrusion form island portion and form in the plug lateral wall receiving cavity between island portion and socket side wall, the socket guide portion includes plug guide portion receiving cavity, plug guide portion receiving cavity, Lie in the vertical periphery wall in the horizontal outside in plug guide portion receiving chamber and being located a pair of horizontal periphery wall in the vertical both sides in plug guide portion receiving chamber, the socket reinforcement is including cover in the main part on vertical periphery wall surface, certainly the vertical both sides of main part extend along the transverse direction cover in the outer horizontal periphery wall of horizontal periphery wall covers the portion and certainly horizontal periphery wall covers the portion top and turns over the elasticity arm that extends the formation to the enstrophe, a serial communication port, the socket reinforcement still includes certainly horizontal periphery wall covers a free end orientation the fixed tip that the chamber was bent and is extended formation is received to the plug guide portion, fixed tip includes and passes through downwards socket body and welds the welding part on printed circuit board.

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