CN218632563U - Board-to-board socket - Google Patents

Abstract

The utility model provides a board to board socket, includes socket ontology, socket terminal, socket reinforcement and protection armour, socket ontology includes the diapire, certainly the socket lateral wall that the vertical both ends of diapire make progress the protrusion and form, be formed at the socket guiding portion at the horizontal both ends of socket ontology reaches certainly the island portion that the diapire makes progress the protrusion and forms, the horizontal both ends of island portion are formed with by the protection portion, socket guiding portion includes plug guiding portion receiving chamber, is located the horizontal periphery wall in the horizontal outside in plug guiding portion receiving chamber and being located a pair of vertical periphery wall of the vertical both sides in plug guiding portion receiving chamber, protection armour integrated into one piece in on the socket ontology, socket terminal and socket reinforcement cartridge in on the socket ontology, protection armour including expose in the subsides dress portion of socket ontology's diapire surface and certainly the portion of subsides dress bends to extend and wrap up in by the armour portion on the protection portion. The protection of this application board to board socket to island portion is more outstanding.

Description

Board-to-board socket

Technical Field

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

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 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 of board producer after with the socket cooperation, 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 the board connector subassembly, the large-scale function integration of current smart mobile phone, propose higher requirement to electric current bearing capacity. The patent 202010513475.6 of the people's republic of china is a board-to-board connector assembly product capable of transmitting large current developed by the applicant, which can meet the current transmission of 10A, but the socket reinforcement and the central guide part of the product adopt an integrated design structure, so that the central guide part can only be fastened on the protected part of the island part in an assembling manner, and the combination of the two parts is not tight enough. Meanwhile, the main body of the socket reinforcement is guided toward the plug guide receiving cavity only by thinning to form an inclined surface, and the guiding effect is still not good enough.

SUMMERY OF THE UTILITY MODEL

In view of the above, it is desirable to provide a board-to-board socket, in which a socket reinforcing member and a protection armor are separately designed, and the protection armor and a socket body are integrally formed, so that the protection effect on an island portion is enhanced.

For solving above-mentioned technical problem, the application provides a board to board socket, including socket ontology, socket terminal, socket reinforcement and protection armour, socket ontology includes the diapire, certainly the vertical both ends of diapire make progress the protruding socket side wall that forms, be formed with the socket guide portion at the horizontal both ends of socket ontology and certainly the island portion that the diapire makes progress the protrusion and forms, the horizontal both ends of island portion are formed with by the protection portion, socket guide portion includes plug guide portion and receives the chamber, is located the horizontal periphery wall in the horizontal outside in chamber is received to plug guide portion and is located a pair of vertical periphery wall in the vertical both sides in chamber is received to plug guide portion, socket reinforcement including cover in the main part on horizontal periphery wall surface, the vertical both sides of main part along horizontal direction extend cover in the outer top surface of horizontal periphery wall covers the portion and with vertical periphery wall cover the portion and certainly vertical cover portion extends to horizontal periphery wall is close to the elasticity arm in chamber one side is received to plug guide portion, protection armour integrated into one piece in socket ontology is last, socket terminal and socket reinforcement cartridge in socket ontology is exposed in socket ontology's last the diapire portion and the subsides of socket ontology surface and paste the portion and the protection armour portion extend in the armour portion and bend.

Preferably, the mounting portion includes a mounting main body extending in a longitudinal direction, a pair of welding legs extending from both ends of the mounting main body in the longitudinal direction toward a lateral outer side, and an avoiding portion formed between the pair of welding legs, and the avoiding portion avoids the main body portion of the socket reinforcement.

Preferably, the armour portion includes certainly paste the cover that the subsides main part upwards bent formation cover by horizontal armour on the horizontal terminal surface of protection part, certainly horizontal armour top level is bent cover in by the armour top on the protection part top surface and certainly the vertical both sides downward bending in armour top extend the formation cover in by the vertical both ends of protection part vertical armour on the terminal surface.

Preferably, the bottom end of the longitudinal armor is bent oppositely to form a barb embedded in the protected part.

Preferably, the horizontal periphery wall of the socket body comprises a supporting shoulder part and an elastic avoiding part which is positioned on the longitudinal inner side of the supporting shoulder part and communicated with the plug guide part receiving cavity, and the elastic arm part can be elastically deformed in the elastic avoiding part in the longitudinal direction.

Preferably, the support shoulder portion includes a thin wall portion located on the lateral outer side and a thick wall portion located on the lateral inner side, the elastic avoiding portion is located on the thin wall portion and has a wider width in the longitudinal direction, the thickness of the thin wall portion is smaller than that of the thick wall portion, and the elastic arm portion is elastically deformed toward the inner side surface of the thin wall portion in the longitudinal direction under the extrusion of the plug; the top surface of the support shoulder is covered by the top surface cover portion.

Preferably, the support shoulder portion is formed with installation step portion on the vertical outside, vertical periphery wall cover portion extends on installation step portion, the support shoulder portion is formed with the intercommunication space that communicates elasticity dodges the portion and installation step portion at least in the one end of horizontal direction.

Preferably, the elastic arm portion includes a tensioning portion bent from one transverse end of the longitudinal peripheral wall covering portion and extending to the communication gap, an elastic body arm extending from the tensioning portion to the elastic avoiding portion in the transverse direction, and a contact protrusion protruding into the plug guide receiving cavity and formed by stamping from the elastic body arm.

Preferably, the main body part and the top cover part are bent downwards at one side of the plug guide receiving cavity to form an inner fillet, a bent part of the inner fillet is formed with an inner arc guiding surface, the inner fillet is of a continuous seamless structure, that is, the inner fillet is also formed at a joint angle of the main body part and the top cover part, and in a vertical projection direction, the inner fillet completely covers the elastic main body arm.

Preferably, the main body part and the top surface covering part are located on one side of the plug guiding part receiving cavity and are bent downwards to form an inner fillet, an inner arc guiding surface is formed at the bent part of the inner fillet, and the inner fillet is of a continuous seamless structure, namely, the inner fillet is also formed at the joint of the main body part and the top surface covering part; the top cover portion further comprises a protective edge and a cover end portion which respectively at least partially cover the elastic body arm and the tensioning portion in a vertical projection direction.

This application board is to the board socket through inciting somebody to action the socket reinforcement with protection armour components of a whole that can function independently design will protection armour through integrative injection moulding in this internal so that of socket this is protected better by armour portion island portion by the protection portion, simultaneously, socket reinforcement component dress in socket ontology is in order to keep elasticity.

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 a perspective assembly view of a board-to-board plug of the present application;

fig. 2 is a perspective view of the plug body of the board-to-board plug of the present application;

fig. 3 is a perspective view of a header reinforcement for a board-to-board header of the present application;

FIG. 4 is a perspective view of an alternate angle of the header reinforcement of the board-to-board header of the present application;

FIG. 5 is a perspective assembly view of the board-to-board socket of the present application;

FIG. 6 is a perspective assembly view of another angle of the board-to-board socket of the present application;

fig. 7 is a perspective view of a socket body of the board-to-board socket of the present application and a partially enlarged view thereof;

FIG. 8 is a perspective view of the socket reinforcement and protective armor of the board-to-board socket of the present application;

FIG. 9 is a perspective view of a first embodiment of a socket stiffener for a board-to-board socket according to the present application;

FIG. 10 is a top view of a first embodiment of a socket stiffener for a board-to-board socket according to the present application;

fig. 11 is a perspective view of a second embodiment of a socket stiffener for a board-to-board socket of the present application;

FIG. 12 is a top view of a second embodiment of a socket stiffener for a board-to-board socket according to the present application;

fig. 13 is a perspective view of the plate-to-plate socket protective armor of the present application.

Description of the reference numerals

A plug-A; a socket-B; a plug body-10; a top wall-11; plug sidewall-12; an island receiving cavity-13; a plug lead-14; a bottom surface-141; a laterally outboard side-142; longitudinal lateral side-143; an inner side groove-144; a material escape port-145; filling protrusions-146; filling a clamping block-147; a plug terminal-20; plug reinforcement-30; a peripheral wall-31; a transverse peripheral wall-311; a longitudinally peripheral wall-312; cover bottom-32; laterally covering the bottom-321; longitudinally covering bottom-322; a first guide part-323; a free end-324; a second guide portion-325; incision-326; a guiding cambered surface-327; a fixing hole-328; a fillet-33; notch-331; a socket body-40; a bottom wall-41; a receptacle sidewall-42; a plug sidewall receiving cavity-43; a socket lead-44; a transverse peripheral wall-441; a first extension groove-4411; a second extension groove-4412; a longitudinally peripheral wall-442; support shoulder-4421; thin-walled portion-4422; thick-walled portion-4423; an elastic avoidance portion-4424; mounting step-4425; a communication void-4426; a third extension groove-4428; a plug guide receiving cavity-443; a thimble hole-444; concave edge-445; an island-45; protected end-451; a socket terminal-50; socket stiffener-60; a main body portion-61; a transverse peripheral wall cover portion-62; a longitudinal peripheral cover portion-64; a solder tail-641; fillet-63; inner arc guide surface-631; a lower extension-632; a protection part-633; a resilient arm portion-65; a tightening part-651; elastomeric body arm-652; contact projection-653; a top cover portion-66; overlay base-661; protective edge-662; cover end-663; protective armour-70; a mounting portion-71; a mounting main body-711; a welding foot-712; an escape part-713; armor-72; transverse armour-721; armor top-722; longitudinal armor-723; barb-724.

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 is defined as the right direction (or lateral direction) with the X direction shown in fig. 1 and 5 as the left-right direction, the front direction (or longitudinal direction) with the Y direction as the front-back direction, and the upper direction (or vertical direction) with the Z direction as the up-down direction.

Referring to fig. 1 and 5, the board-to-board plug a and the board-to-board socket B are inserted into each other to form a board-to-board connector assembly.

Example one

Referring to fig. 1 to 4, the plate-to-plate plug a of the present application includes a plug body 10, a plug terminal 20 integrally formed on the plug body 10, and a plug reinforcing member 30.

The plug body 10 includes a top wall 11, a pair of plug side walls 12 formed by extending downward from both longitudinal sides of the top wall 11, plug guide portions 14 formed at both 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 sidewalls 12 in two rows in the transverse direction, and the plug guide 14 includes a bottom surface 141, a transverse outer side 142, and a pair of longitudinal outer sides 143 connecting the transverse outer side 142 and the plug sidewalls 12. An inner groove 144 is formed at the inner side of the lateral outer side 142 in an upward concave manner, and an escape opening 145 is formed at the top of the lateral outer side 142. A filling block 147 is formed at the joint of the bottom surface 141 and the lateral outer side surface 142 in a protruding manner, and a filling protrusion 146 is formed at the inner side of the bottom surface 141 at the connecting angle between the lateral outer side surface 142 and the longitudinal outer side surface 143 in a protruding manner.

The header reinforcing member 30 includes a peripheral wall 31 surrounding the longitudinal outer side 142 and the transverse outer side 143 of the header guiding portion 14, a covering bottom portion 32 formed by bending vertically from the bottom end of the peripheral wall 31, a solder fillet 33 formed by bending outward from the outer periphery of the peripheral wall 31, and a guiding arc 327 formed by bending inward from the inside of the covering bottom portion 32 toward the island receiving cavity 13. The solder leg 33 may also be formed directly on the top end of the peripheral wall 31 without being bent.

The peripheral wall 31 includes a transverse peripheral wall 311 covering the outer side 142 and a longitudinal peripheral wall 312 bent perpendicularly from both longitudinal ends of the transverse peripheral wall 311 and covering the outer side 143. The cover bottom 32 includes a longitudinal cover bottom 322 formed by extending from the bottom of the pair of longitudinal peripheral walls 312 to be bent vertically and a transverse cover bottom 321 formed between the pair of longitudinal cover bottoms 322 by being bent vertically from the bottom of the transverse peripheral wall 311. The longitudinal covering bottom 322 and the transverse covering bottom 321 are seamlessly connected. The pair of longitudinal cover bottom portions 322 are bent upward at their respective lateral free ends to form first guide portions 323, and the inner side of the lateral cover bottom portion 321 is bent upward to form second guide portions 325. The free end portion 324 of the first guide portion 323 is thinned or folded outwardly toward the longitudinal peripheral wall 312 so that the free end portion 324 does not extend beyond the first guide portion 323 in a vertical projection direction. The guide arc surface 327 is provided at a bending position of the first guide portion 323 and the second guide portion 325. The second guide 325 is inserted into the inner groove 144 of the plug body 10. The bending part of the transverse covering bottom 321 and the transverse peripheral wall 311 is provided with a fixing hole 328, and the inner sides of the transverse covering bottom 321 and the longitudinal covering bottom 322 are cut to form a notch 326. The cut 326 is located between the first guide part 323 and the second guide part 325, the cut 326 is an arc-shaped cut surface, two ends of the cut 326 are respectively connected with the first guide part 323 and the second guide part 325, and the inner side of the cut 326 is open and is substantially shaped like a broad bean.

The plug reinforcement 30 and the plug terminal 20 are integrally injection-molded on the plug body 10, specifically, the filling protrusion 146 is filled in the notch 326, and the surface of the filling protrusion 146 is consistent with the guiding arc surface 327. The filling fixture block 147 is filled in the fixing hole 328.

The peripheral wall 31 and the covering bottom 32 of the header reinforcing member 30 of the present application are integrally stamped into a seamless structure, so that it has a better protection effect on the header guiding portion 14 of the header body 10; the first guiding portion 323 and the second guiding portion 325 are formed by bending the inner side of the cover bottom 32, and the guiding arc surface 327 is formed by the bending, so that the guiding performance of the plug reinforcement 30 is better. Meanwhile, the cut 326 is cut at the corner of the seamless structure covering the bottom 32, so that the requirement of stamping a guide surface at the corner is avoided, and the manufacturing difficulty of the product is reduced. Meanwhile, the arrangement of the notches 331 and the fixing holes 328 can increase the heat dissipation capability.

Referring to fig. 5 to 10 and 13, the board-to-board socket B of the present application includes a socket body 40, a protective armour 70 integrally formed in the socket body 40, and a socket terminal 50 and a socket stiffener 60 mounted on the socket body 40.

The socket body 40 includes a bottom wall 41, a pair of socket sidewalls 42 extending upward from both longitudinal sides of the bottom wall 41, an island portion 45 protruding upward from the bottom wall 41 between the pair of socket sidewalls 42, socket guide portions 44 formed at both lateral ends of the socket body 40, and a plug sidewall receiving cavity 43 formed between the island portion 45 and the pair of socket sidewalls 42.

Referring to fig. 7, protected portions 451 are formed at both lateral ends of the island portion 45 toward the socket guide portion 44.

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

The lateral outer side and the lateral inner side of the lateral outer peripheral wall 441 are provided with first and second extending grooves 4411, 4412, respectively. A support shoulder portion 4421 is formed in the middle of the longitudinal peripheral wall 442, and a mounting step portion 4425 extending in the transverse direction and located on the longitudinal outer side of the support shoulder portion 4421, a communication gap 4426 for separating the support shoulder portion 4421 from the socket side wall 42, and an elastic avoiding portion 4424 extending in the transverse direction and located on the longitudinal inner side of the support shoulder portion 4421 are respectively provided on the outer periphery of the support shoulder portion 4421. The mounting stepped portion 4425, the communication gap 4426 and the elastic escape portion 4424 communicate with each other. The support shoulder 4421 includes a thin wall portion 4422 on the side close to the lateral outer peripheral wall 441 and a thick wall portion 4423 formed to extend from the thin wall portion 4422 in the lateral direction toward the socket side wall 42. The elastic avoiding portion 4424 is located inside the thin wall portion 4422. The mounting stepped part 4425 partially penetratingly forms a third extending groove 4428 in a vertical direction. A top pin hole 444 is formed at a middle position of the plug guide receiving cavity 443, and a concave edge 445 is formed by downwardly recessing the peripheral wall at a side close to the plug guide receiving cavity 443.

With continued reference to fig. 7 to 10, the socket stiffener 60 includes a main body portion 61 covering the top surface of the transverse peripheral wall 441 in the longitudinal direction, a transverse peripheral wall covering portion 62 bent downward from the transverse outer end of the main body portion 61 and extending into the first extending groove 4411, a top surface covering portion 66 extending from both longitudinal ends of the main body portion 61 to the top surface of the supporting shoulder 4421, a longitudinal peripheral wall covering portion 64 bent downward from the longitudinal outer side of the top surface covering portion 66 and extending onto the mounting step portion 4425, a resilient arm portion 65 bent from the free end of the longitudinal peripheral wall covering portion 64 or the top surface covering portion 66 away from the main body portion 61 and extending through the communication gap 4426 to the resilient escape portion 4424, and an inner corner 63 bent from the inside of the main body portion 61 and the top surface covering portion 66 toward the plug guide receiving cavity 443.

The bottom end or bottom end of the horizontal peripheral wall covering part 62 is bent to form a solder leg and fixed to the printed circuit board, and the bottom end or bottom end of the vertical peripheral wall covering part 64 is bent to form a solder leg 641 and extends to the printed circuit board through the third extending groove 4428 to be soldered and fixed.

The inner rounded corner 63 is bent inside the body portion 61 and the top cover portion 66 to form a seamless inner curved guide surface 631, and the inner curved guide surface 631 includes a portion bent inside the body portion 61 and the top cover portion 66 and a portion formed where the body portion 61 and the top cover portion 66 are joined, so that the inner curved guide surface 631 seamlessly guides the insertion of the plug a. The fillet 63 continues to extend downwardly at the portion of the body portion 61 to form a lower portion 632, and the lower portion 632 is received in the second extension groove 4412 of the socket body 40. The fillet 63 continues to extend downward at the top cover portion position to form a protection portion 633, and the lower end of the protection portion 633 is thinned toward the longitudinal outside near the plug guide receiving cavity 443. The top surface covering portion 66 includes a covering base portion-661, a protective edge 662 formed on the longitudinally inner side of the covering base portion 661, and a covering end portion 663 formed on the lateral end edge of the covering base portion 661.

The elastic arm portion 65 includes a straining portion 651 formed by being bent back from the free end of the longitudinal peripheral wall covering portion 64, an elastic body arm 652 extending from the straining portion 651 in the lateral direction to the elastic escape portion 4424, and a contact protrusion 653 protruding from the elastic body arm 652 toward the plug guide receiving cavity 443. The tightening portion 651 passes through the communication gap 4426, and the elastic body arm 652 passes through the thick-walled portion 4423 and extends to the elastic escape portion 4424 at the thin-walled portion 4422. The elastic escape part 4424 has more deformation space in the longitudinal direction at the position of the thin wall part 4422, and the contact protrusion 653 extends at least partially into the plug guide receiving cavity 443. When the plug a is not inserted into the socket B, i.e., the socket B is in a natural state, the protective edge 662 of the top cover portion 66 at least partially covers the resilient body arm 652 when viewed from the top (i.e., as shown in fig. 10). The cover end 663 is at least partially positioned on an upper side of the tightening part 651 to protect the tightening part 651.

In a natural state, the elastic body arm 652 is located on the side of the elastic escape portion 4424 facing the plug guide receiving cavity 443, and has a deformation gap with the inner side surface of the thin wall portion 4422, and when the contact protrusion 653 of the elastic arm portion 65 is longitudinally pressed, the elastic body arm 652 is deformed in the deformation gap. The inner side of the thick portion 4423 abuts against the tightening portion 651 to form a deformation fulcrum. The inner arc guide surfaces 631 and the protectors 633 inside the top cover portion 66 are closer to the plug guide receiving cavity 443 than the protector edges 662.

As shown in fig. 8 and 13, the protective armor 70 includes an attaching portion 71 attached to the printed circuit board and a armor portion 72 formed by bending and extending the attaching portion 71 and wrapping the protected portion 451 of the island 45. The mounting portion 71 is exposed to the lower surface of the bottom wall 41 of the socket body 40, and the mounting portion 71 includes a mounting main body 711 extending in the longitudinal direction, a pair of soldering legs 712 extending from both ends of the mounting main body 711 in the transverse direction, and a relief portion 713 formed between the pair of soldering legs 712. The escape portion 713 to escape the lateral peripheral wall covering portion 62 of the socket reinforcement 60 and the solder tail thereon. The armor part 72 includes a lateral armor 721 bent upward from the middle of the mounting body 711, an armor top 722 bent horizontally from the top of the lateral armor 721, and a pair of longitudinal armors 723 bent downward from both longitudinal sides of the armor top 722. The bottom end of the longitudinal armor 723 is bent oppositely to form a barb 724. The protection armor 70 is integrally injection-molded with the socket body 40, and the thimble hole 444 of the surface of the plug guide receiving cavity 443 is used to position the mounting body 711 of the protection armor 70 to prevent the protection armor 70 from being displaced or deformed by a force. The armor 72 is tightly wrapped on the protected part 451 of the island 45, the transverse armor 721 protects the transverse outer side of the protected part 451, the top 722 of the armor protects the top of the protected part 451, the longitudinal armor 723 protects the longitudinal two sides of the protected part 451, and the barb 724 at the bottom end of the longitudinal armor 723 is embedded in the protected part 451 to enhance the bonding force between the two.

Example two

Referring to fig. 11 and 12, the second embodiment differs from the first embodiment only in the structure of the socket stiffener 60. The socket stiffener 60 of embodiment two extends the fillets 63 over the elastomeric body arms 652, covering the elastomeric body arms 652 directly through the fillets 63, when the fillets 63 completely cover the elastomeric body arms 652.

This application board is through inciting somebody to action socket reinforcement 60 with protection armour 70 components of a whole that can function independently design will protection armour 70 through integrative injection moulding in socket body 40 so that armour portion 72 protects better island portion 45 by protection portion 451, simultaneously, socket reinforcement 60 assemble in socket body 40 is in order to keep elasticity.

The fillet 63 of the board-to-board socket B of the present application is provided in a seamless configuration, which provides better guidance for the plug a. The body portion 61, the top surface covering portion 66 and the combination of the two are formed with the inner corners 63, so that the socket reinforcing member 60 forms the seamless inner arc guide surfaces 631 on three sides corresponding to the plug guide receiving cavity 443, resulting in better guiding performance.

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. The utility model provides a board to socket, includes socket ontology, socket terminal, socket reinforcement and protection armour, socket ontology includes the diapire, certainly the vertical both ends of diapire make progress the protruding socket side wall that forms, be formed with in the socket guide portion at the horizontal both ends of socket ontology reaches certainly the island portion that the diapire makes progress the protrusion and forms, the horizontal both ends of island portion are formed with by the protection portion, socket guide portion includes plug guide portion receiving chamber, is located horizontal periphery wall in the horizontal outside of plug guide portion receiving chamber and is located a pair of vertical periphery wall of the vertical both sides of plug guide portion receiving chamber, socket reinforcement including cover in the main part on horizontal periphery wall surface, certainly the vertical both sides of main part extend along horizontal direction cover in the outer top surface of horizontal periphery wall covers the portion and certainly vertical periphery wall cover portion extends to horizontal periphery wall is close to the elasticity arm of plug guide portion receiving chamber one side, its characterized in that protection armour integrated into one piece in on the socket ontology, socket terminal with the socket reinforcement in socket ontology is in the socket ontology is last, protection armour including exposing in the portion of pasting of socket ontology's diapire and from the portion paste dress portion extend in the armour portion and be bent by the armour portion.

2. The board-to-board socket according to claim 1, wherein the mounting portion includes a mounting main body extending in a longitudinal direction, a pair of soldering legs extending from both longitudinal ends of the mounting main body toward a lateral outer side, and an escape portion formed between the pair of soldering legs, the escape portion avoiding the main body portion of the socket reinforcement.

3. The board-to-board socket according to claim 2, wherein the armor portion comprises a horizontal armor bent upward from the main body to cover the lateral end surface of the protected portion, a top portion bent horizontally from the top portion of the horizontal armor to cover the top surface of the protected portion, and a vertical armor bent downward from the top portion to cover the longitudinal end surfaces of the protected portion.

4. A board-to-board socket according to claim 3, wherein the bottom ends of the longitudinal armour are bent towards each other to form a barb that fits into the protected portion.

5. The board-to-board jack of claim 1, wherein the lateral outer peripheral wall of the jack body includes a support shoulder and an elastic relief portion located longitudinally inward of the support shoulder and communicating with the plug guide receiving cavity, the elastic arm portion being elastically deformable in the elastic relief portion in the longitudinal direction.

6. The board-to-board socket according to claim 5, wherein the support shoulder portion includes a thin wall portion located on a laterally outer side and a thick wall portion located on a laterally inner side, the elastic relief portion has a wider width in a longitudinal direction at the thin wall portion, the thin wall portion has a thickness smaller than that of the thick wall portion, and the elastic arm portion is elastically deformed toward an inner side face of the thin wall portion in the longitudinal direction under the pressing of the plug; the top surface of the support shoulder is covered by the top surface cover portion.

7. The board-to-board socket according to claim 6, wherein a mounting step portion is formed on a longitudinal outer side of said support shoulder portion, said longitudinal peripheral wall covering portion extending over said mounting step portion, said support shoulder portion being formed at least one end in a transverse direction thereof with a communication gap communicating said elastic relief portion with said mounting step portion.

8. The board-to-board socket of claim 7 wherein said resilient arm portion includes a tension portion bent from a lateral end of said longitudinal peripheral wall covering portion and extending over said communication space, a resilient body arm extending from said tension portion over said resilient relief portion in a lateral direction, and a contact projection stamped from said resilient body arm and projecting into said plug guide receiving cavity.

9. The board-to-board socket according to claim 8, wherein said main body portion and said top surface covering portion are bent downward at a side of said plug guide receiving cavity to form an inner fillet, and a bent portion of said inner fillet forms an inner arc guiding surface, said inner fillet is of a continuous seamless structure, i.e. said inner fillet is formed at a joint of said main body portion and said top surface covering portion, and said inner fillet completely covers said elastic main body arm in a vertical projection direction.

10. The board-to-board socket according to claim 8, wherein the main body portion and the top surface covering portion are bent downward at the side of the plug guide receiving cavity to form an inner fillet, the bent portion of the inner fillet forms an inner arc guiding surface, and the inner fillet is of a continuous seamless structure, i.e. the inner fillet is formed at the joint of the main body portion and the top surface covering portion; the top cover portion further comprises a protective edge and a cover end portion which respectively at least partially cover the elastic body arm and the tensioning portion in a vertical projection direction.

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