Plug reinforcer, board-to-board plug, and board-to-board connector assembly

Abstract

A plug stiffener includes a cover bottom, a lateral peripheral wall bent upward from a lateral outer side of the cover bottom, a longitudinal peripheral wall bent upward from a longitudinal outer side of the cover bottom, a connecting portion bent upward and extended from a lateral inner side of the cover bottom, and a soldering leg extended from both longitudinal sides of the connecting portion. The connecting portion does not overlap the cover top when viewed in a vertical direction. The application also includes a board-to-board plug and a board-to-board connector assembly.

Description

Technical Field

[0001] This application relates to the field of electrical connectors, and more particularly to a plug reinforcement, a board-to-board plug, and a board-to-board connector assembly. Background Technology

[0002] Board-to-board connector assemblies are widely used in consumer electronics, such as smartphones, tablets, and wearable devices. Current smartphones and wearable devices have extremely high space requirements, and the size of components is also shrinking. Leading board-to-board manufacturers have achieved an ultra-low height of only 0.6mm for the combined height of the plug and socket, with a terminal spacing of 0.25mm. Such tiny connectors place high demands on structural strength. Furthermore, compared to traditional board-to-board connector assemblies, the large-scale functional integration of current smartphones places higher demands on current carrying capacity. Patent No. 202010176952.4 of the People's Republic of China describes the development of a board-to-board connector assembly. Through structural improvements, this product can already accommodate current transmission capabilities exceeding 5A. Specifically, both the socket and plug can handle 10A of current transmission. However, with the increasing current transmission between the PCB motherboard and the battery, current requirements demand a transmission current of 15A. The plug structure in patent application No. 202010176952.4 cannot meet such a high current transmission requirement and needs improvement. Summary of the Invention

[0003] Therefore, it is necessary to provide a plug reinforcement, a board-to-board plug, and a board-to-board connector assembly to enhance the strength of the plug guide, increase the area of ​​the plug reinforcement, and improve the transmission power.

[0004] To solve the above-mentioned technical problems, this application provides a plug reinforcement, including a bottom cover, a transverse outer wall formed by bending upward from the transverse outer side of the bottom cover, a longitudinal outer wall formed by bending upward from the longitudinal outer side of the bottom cover, a connecting portion formed by bending upward from the transverse inner side of the bottom cover, and welding feet formed by extending from both longitudinal sides of the connecting portion. When viewed in the vertical direction, the connecting portion does not overlap with the top cover.

[0005] Preferably, the connecting portion includes a vertical connecting portion formed by bending upward from the bottom of the cover and a horizontal connecting portion formed by bending upward from the upper end of the vertical connecting portion, and the welding foot is formed by extending longitudinally from both sides of the horizontal connecting portion.

[0006] Preferably, a through hole is formed on the horizontal connecting part, the through hole is used to fill plastic material to increase the bonding force, and a guide slope is formed at the bottom of the cover and the bend of the connecting part.

[0007] To solve the above-mentioned technical problems, this application also provides a board-to-board plug, including a plug body, a plurality of plug terminals and the aforementioned plug reinforcement. The plug body includes a top wall, a pair of plug sidewalls extending downward from both longitudinal sides of the top wall, plug guide portions formed at both transverse ends of the plug body, and an island receiving cavity formed between the top wall, the pair of plug sidewalls and the plug guide portions. The plug terminals are integrally formed on the pair of plug sidewalls, the plug reinforcement is integrally formed on the plug guide portions, the bottom cover covers the bottom surface of the plug guide portions, the transverse outer wall covers the transverse outer surface of the plug guide portions, the longitudinal outer wall covers the longitudinal outer surface of the plug guide portions, and the solder feet extend beyond the longitudinal outer surface of the plug body.

[0008] Preferably, the connecting portion includes a vertical connecting portion formed by bending upward from the bottom of the cover and a horizontal connecting portion formed by bending upward from the upper end of the vertical connecting portion. The welding foot is formed by extending longitudinally from both sides of the horizontal connecting portion, and the top surface of the horizontal connecting portion is exposed on the top wall surface.

[0009] Preferably, a through hole is formed on the horizontal connecting part, the through hole is filled with plastic material, and a guide slope is formed at the bottom of the cover and the bend of the connecting part.

[0010] Preferably, there is a gap between the longitudinal outer wall and the transverse outer wall, and the gap is filled with plastic material.

[0011] Preferably, the longitudinal outer wall, the transverse outer wall, and the bottom cover are a seamless integrated structure, which is manufactured by a stamping and stretching process.

[0012] Preferably, the thickness of the plug reinforcement is greater than the thickness of the plug terminal, and the plug terminal includes plug terminal solder feet arranged in a row with the solder feet of the plug reinforcement, and the solder feet of the plug reinforcement are flush with the top surface of the solder feet of the plug terminal.

[0013] Preferably, the plug terminal solder feet are formed extending longitudinally from the upper surface of the top wall, and the plug terminal further includes a first contact portion of the plug terminal that bends from the plug terminal solder feet along the surface of the top wall to the inner side surface of the plug side wall, and a second contact portion of the plug terminal that bends in the opposite direction from the lower end of the first contact portion of the plug terminal and extends to the outer side surface of the plug side wall.

[0014] To address the aforementioned technical problems, this application also provides a board-to-board connector assembly, including a socket and the aforementioned plug. The socket includes a socket body, socket terminals, and a socket reinforcement. The socket body includes a bottom wall, socket sidewalls protruding upwards from both longitudinal ends of the bottom wall, socket guide portions formed at both transverse ends of the socket body, and an island portion protruding upwards from the bottom wall. The socket reinforcement covers the socket guide portions. A plug sidewall receiving cavity is formed between the socket sidewalls and the island portion. When the plug mates with the socket, the island portion of the socket body snaps into the island portion receiving cavity of the plug, the plug sidewall is inserted into the plug sidewall receiving cavity, the plug terminals are in electrical contact with the socket terminals, the plug reinforcement is in electrical contact with the socket reinforcement, and the longitudinal outer perimeter wall of the plug reinforcement serves as a contact portion in electrical contact with the socket reinforcement.

[0015] The plug reinforcement of this application forms the connecting part by bending upward on the lateral inner side of the bottom of the cover, so that the connecting part does not overlap with the bottom of the cover in the vertical direction, which reduces the stamping difficulty, while taking into account the wrapping area to increase strength and heat dissipation capacity. Attached Figure Description

[0016] The accompanying drawings, which are provided to further illustrate this application and form part of this application, illustrate exemplary embodiments of this application and are used to explain this application, but do not constitute an undue limitation of this application.

[0017] Figure 1 This is an assembly diagram of the board-to-board connector assembly of this application;

[0018] Figure 2 For along Figure 1 The cross-sectional view shown by the dashed line AA;

[0019] Figure 3 This is a three-dimensional assembly diagram of the board-to-board sockets in this application;

[0020] Figure 4 This is a perspective view and a partial enlarged view of the socket body of the board-to-board socket of this application;

[0021] Figure 5 This is a perspective view of the socket reinforcement of the board-to-board socket in this application;

[0022] Figure 6 This is a top view of the socket reinforcement of the board-to-board socket in this application;

[0023] Figure 7 This is a perspective view of the socket reinforcement of the board-to-board socket in this application from another angle;

[0024] Figure 8This is a perspective view of the first embodiment of the board-to-board connector of this application;

[0025] Figure 9 This is a perspective view of another embodiment of the board-to-board connector of this application.

[0026] Figure 10 This is a perspective view of the plug body of the first embodiment of the board-to-board plug of this application;

[0027] Figure 11 This is a perspective view of the plug reinforcement of Embodiment 1 of the board-to-board plug of this application;

[0028] Figure 12 This is a perspective view of the plug reinforcement of the board-to-board plug embodiment 1 of this application from another angle;

[0029] Figure 13 This is a perspective view of the second embodiment of the board-to-board connector of this application;

[0030] Figure 14 This is a perspective view of the second embodiment of the board-to-board connector of this application from another angle;

[0031] Figure 15 This is a perspective view of the plug reinforcement of Embodiment 2 of the board-to-board plug of this application;

[0032] Figure 16 This is a perspective view of the board-to-board connector embodiment three of this application;

[0033] Figure 17 This is a perspective view of the board-to-board connector embodiment three of this application from another angle;

[0034] Figure 18 This is a perspective view of the plug body of the board-to-board plug according to Embodiment 3 of this application;

[0035] Figure 19 This is a perspective view of the plug reinforcement of Embodiment 3 of the board-to-board plug of this application;

[0036] Figure 20 This is a perspective view of the plug reinforcement of Embodiment 3 of the board-to-board plug of this application from another angle;

[0037] Figure 21 This is a perspective view of the fourth embodiment of the board-to-board connector of this application;

[0038] Figure 22 This is a perspective view of the board-to-board connector embodiment four of this application from another angle;

[0039] Figure 23 This is a perspective view of the plug body of Embodiment 4 of the board-to-board plug of this application;

[0040] Figure 24This is a perspective view of the plug reinforcement and plug terminals of Embodiment 4 of the board-to-board plug of this application;

[0041] Figure 25 This is a perspective view of the plug reinforcement of Embodiment 4 of the board-to-board plug of this application. Detailed Implementation

[0042] To make the objectives, technical solutions, and advantages of this application clearer, the technical solutions of this application will be clearly and completely described below in conjunction with specific embodiments and corresponding drawings.

[0043] The direction of this application is defined as follows: Figure 1 The X direction is the right side (or horizontal direction) in the left-right direction, the Y direction is the front (or vertical direction) in the front-back direction, and the Z direction is the top (or vertical direction) in the up-down direction.

[0044] Please see Figure 1 As shown, the board-to-board connector assembly of this application includes a plug A mounted on a printed circuit board and a socket B mounted on another printed circuit board, wherein the plug A and the socket B are interlocked and connected.

[0045] The plug A includes a plug body 10, a plurality of plug terminals 20 formed within the plug body 10, and plug reinforcing members 30 fixed to both lateral ends of the plug body 10. 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.

[0046] Please continue reading. Figures 1 to 7 As shown, the socket body 40 of the socket B of the board-to-board connector assembly of this application 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.

[0047] The bottom wall of the socket body 40 is provided with a plurality of terminal slots 46 from bottom to top. The socket terminals 50 are assembled upward in the terminal slots 46. The socket terminals 50 include a support arm portion 51 extending into the terminal slots 46 at the bottom wall 41 and exposed at the bottom of the terminal slots 46; a second contact portion 52 of the socket terminal formed by bending upward from the longitudinal outer side of the support arm portion 51 and located on the longitudinal side of the island portion 45 and facing the socket side wall 42; a first contact portion 53 of the socket terminal formed by bending upward from the longitudinal inner side of the support arm portion 51 and located on the longitudinal side of the socket side wall 42; a retaining portion 54 formed by bending backward from the top of the first contact portion 53; and a solder foot 55 that is vertically bent outward from the bottom end of the retaining portion 54 and extends longitudinally outward to the lower surface of the bottom wall 41 of the socket body 40.

[0048] Key references Figure 4 As shown, the island portion 45 has a protected portion 451 at both ends of its horizontal direction facing the socket guide portion 44. The protected portion 451 includes a surface portion 453 with a horizontal plane lower than the island portion 45, a relief slope 452 formed by tilting downward from the surface portion 453, a groove 454 formed by recessing downward from the surface portion 453, and a connecting groove 455 that connects to the relief slope 452 and extends laterally outward from the groove 454.

[0049] The socket guide portion 44 includes outer peripheral walls 441 and 442 and a plug guide receiving cavity 443 located between the outer peripheral walls 441 and 442. The outer peripheral wall includes a longitudinal outer peripheral wall 441 and a pair of transverse outer peripheral walls 442 connected to both ends of the longitudinal outer peripheral wall 441. The transverse outer peripheral walls 442 are connected to the socket sidewall 42.

[0050] The receiving cavity 443 of the plug guide portion is formed with a through-hole 4431 extending vertically through the island portion 45 at its lateral extension. The through-hole 4431 extends all the way to the lower end of the longitudinal outer peripheral wall 441. The lateral outer and inner sides of the longitudinal outer peripheral wall 441 are respectively provided with a first and a second extension groove 4411, 4412, and the second extension groove 4412 communicates with the through-hole 4431. The middle of the lateral outer peripheral wall 442 protrudes upward to form a support shoulder 4421. On the outer periphery of the support shoulder 4421, there are respectively a mounting step portion 4425 located on the longitudinal outer side of the support shoulder 4421 and extending in the lateral direction, a communicating step portion 4426 separating the support shoulder 4421 from the socket sidewall 42, and an elastic clearance portion 4424 located on the longitudinal inner side of the support shoulder 4421 and extending in the lateral direction. The mounting step portion 4425, the connecting step portion 4426, and the elastic clearance portion 4424 are interconnected to form a U-shaped step portion. The supporting shoulder portion 4421 includes a thin-walled portion 4422 near the longitudinal outer peripheral wall 441 and a thick-walled portion 4423 extending from the thin-walled portion 4422 in the transverse direction toward the socket sidewall 42. The top surface of the thick-walled portion 4423 is lower than the top surface of the thin-walled portion 4422. The longitudinal width of the elastic clearance portion 4424 at the thin-walled portion 4422 is greater than the longitudinal width at the thick-walled portion 4423, that is, the thickness of the thin-walled portion 4422 is less than the thickness of the thick-walled portion 4423, thereby increasing the longitudinal width of the elastic clearance portion 4424 at the thin-walled portion 4422. The transverse outer peripheral wall 442 is provided with a stepped portion 49 near the longitudinal outer peripheral wall 441. The mounting step portion 4425 partially extends vertically to form a third extension groove 4428.

[0051] Please continue reading. Figures 5 to 7 As shown, the socket reinforcement 60 includes a main body 61 covering the top surface of the longitudinal outer peripheral wall 441 in the longitudinal direction, a longitudinal outer peripheral wall covering 62 extending downward from the lateral outer end of the main body 61 into the first extension groove 4411, a central guide 63 extending downward from the lateral inner side of the main body 61 to the lateral end of the island 45 on the protected part 451, a top surface covering 66 extending from both longitudinal ends of the main body 61 to the top surface of the support shoulder 4421, a lateral outer peripheral wall covering 64 extending downward from the longitudinal outer side of the top surface covering 66 to the mounting step 4425, and an elastic arm 65 extending backward from the free end of the lateral outer peripheral wall covering 64 and through the connecting step 4426 to the elastic clearance part 4424.

[0052] In another embodiment, the elastic arm 65 may extend from the lateral outer side of the lateral peripheral wall covering portion 64 and then bend in the opposite direction to the elastic avoidance portion 4424.

[0053] The free end 642 of the longitudinal outer peripheral wall covering part 62 is fixed to the printed circuit board as a solder foot, and the bottom end of the transverse outer peripheral wall covering part 64 extends to the printed circuit board as a solder foot through the third extension groove 4428 for soldering and fixing. The main body part 61 facing the plug guide receiving cavity 443 has inclined guide parts 611 formed by folding down on both longitudinal sides of the central guide part 63.

[0054] The central guide portion 63 includes a first central guide arm 631 that bends downward from the inner side of the main body 61 and extends into the second extension groove 4412; a support base arm 632 that bends laterally from the bottom of the first central guide arm 631 and extends along the through opening 4431 to the bottom of the protected portions 451 on both sides of the island portion 45; a second central guide arm 634 that extends obliquely upward from the support base arm 632 to the top of the protected portions 451; and a snap-in end 635 that bends downward from the free end of the second central guide arm 634 and snaps into the snap-in groove 454. The first and second central guide arms 631 and 634 are used to guide the insertion of the plug reinforcement 30 and protect the longitudinal outer peripheral wall 441 of the socket body 40 and the protected portions 451 at both ends of the island portion 45. The longitudinal outer side cover 35 and longitudinal inner side cover 34 of the plug reinforcement 30 are guided by the first and second central guide arms 631 and 634, respectively, and enter between the first and second central guide arms 631 and 634 above the support base arm 632. However, in the inserted state, the longitudinal outer side cover 35 and the longitudinal inner side cover 34 do not make electrical contact with the first and second central guide arms 631 and 634. During insertion, the support base arm 632 is pressed against the mounted printed circuit board, generating a supporting force that gives the first and second central guide arms 631 and 634 a certain degree of elasticity.

[0055] The top surface covering portion 66 includes a covering base 661, a guide portion 662 formed by bending downwards from the inside of the covering base 661 at the stepped portion 49, and a guide slope 663 formed by thinning the inner edge of the covering base 661 at the elastic relief portion 4424. The top surface of the thick-walled portion 4423 of the supporting shoulder 4421 is not covered by the top surface covering portion 66 and is exposed to the outside. The bottom of the guide portion 662 is located above the stepped portion 49.

[0056] The elastic arm 65 includes a tensioning portion 651 formed by bending backwards from the free end of the transverse outer peripheral wall covering portion 64 in the transverse direction, an elastic main arm 652 extending laterally from the tensioning portion 651 onto the elastic clearance portion 4424, and a contact protrusion 653 protruding from the elastic main arm 652 toward the plug guide receiving cavity 443. The tensioning portion 651 extends along the mounting step portion 4425, the connecting step portion 4426, and the elastic clearance portion 4424, i.e., along the thick wall portion 4423 of the support shoulder portion 4421, while the elastic main arm 652 extends to the position where the elastic clearance portion 4424 is located at the thin wall portion 4422. The elastic clearance portion 4424 has more deformation space in the longitudinal direction at the position of the thin wall portion 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, that is, when the socket B is in its natural state, viewed from above (i.e.) Figure 11 As shown), the guide slope 663 of the top cover portion 66 does not cover the elastic main body arm 652. When the elastic arm portion 65 is pressed longitudinally outward by the contact portion 331 of the lateral outer side cover portion 33 of the plug reinforcement 30, the elastic main body arm 652 may be partially located below the guide slope 663.

[0057] In its natural state, the main body 652 of the elastic arm is located on the side of the elastic clearance portion 4424 facing the receiving cavity 443 of the plug guide portion, and there is a deformation gap between it and the inner side of the thin-walled portion 4422. When the contact protrusion 653 of the elastic arm portion 65 is longitudinally squeezed, the main body 652 of the elastic arm deforms within the deformation gap.

[0058] Please see Figures 8 to 25 The diagram shown illustrates four embodiments of the board-to-board connector A of this application. The board-to-board connector A of this application will be described in detail below according to the embodiments.

[0059] Example 1

[0060] Please see Figure 2 , Figures 8 to 12 The diagram shown is a schematic diagram of Embodiment 1 of the board-to-board connector A of this application.

[0061] The plug body 10 of the plug A includes a top wall 11, a pair of plug side walls 12 extending downward from both sides of the top wall 11, a plug guide portion 14 formed at both ends of the plug body 10 in the lateral direction, and an island receiving cavity 13 formed between the top wall 11, the pair of plug side walls 12 and the plug guide portion 14.

[0062] The plug terminals 20 are integrally formed in two rows on a pair of plug sidewalls 12 in the transverse direction. The plug guide portion 14 includes a bottom surface 141, a transverse outer surface 142, a pair of longitudinal outer surfaces 143, and an inclined surface 144 facing the island receiving cavity 13. An embedding groove 145 is formed extending along the bottom surface 141, the transverse outer surface 142, and the top wall 11. An embedding groove 146 is formed extending from the longitudinal outer surface 143, communicating with the embedding groove 145 on the longitudinal outer surface 142. The lower end of the embedding groove 146 extends to both longitudinal ends of the bottom surface 141. The embedding groove 145 first extends laterally on the surface of the top wall 11, and then branches outward along both longitudinal sides of the top wall 11.

[0063] The plug reinforcement 30 includes an outer wall 31 that covers the longitudinal outer side 142 and the transverse outer side 143 of the plug guide portion 14, a bottom cover 32 formed by vertical bending from the bottom end of the outer wall 31, a top cover 33 formed by vertical bending from the top of the outer wall 31 at one transverse end, and a weld foot 332 formed by extending from the end of the top cover 33 along both longitudinal sides.

[0064] The outer perimeter wall 31 has a U-shaped structure, including a transverse outer perimeter wall 311 covering the transverse outer side 142 and a longitudinal outer perimeter wall 312 that is vertically bent from both ends of the transverse outer perimeter wall 311 and covers the longitudinal outer side 143. The bottom cover 32 includes a longitudinal bottom cover 322 that extends vertically from the bottom of a pair of longitudinal outer perimeter walls 312 and a transverse bottom cover 321 that extends vertically from the bottom of the transverse outer perimeter wall 311 between the pair of longitudinal bottom covers 322. The free end of the transverse bottom cover 321 is pressed downward to form a guide slope 323. The top cover 33 is formed by vertically bending from the top of the transverse outer perimeter wall 311 and includes an extension base 331, weld feet 332 that extend longitudinally from the free end of the extension base 331 and along both sides, and a fork 333 formed at the free end of the extension base 331.

[0065] Viewed vertically, the free end 313 of the longitudinal peripheral wall 312 at least partially overlaps with the weld foot 332, thereby extending the length of the longitudinal peripheral wall 312 and increasing its heat dissipation function. Meanwhile, the bottom of the free end 313 is provided with an avoidance notch 314 to avoid interference between the two.

[0066] The plug reinforcement 30 and plug terminal 20 are integrally injection molded with the plug body 10. The lateral cover bottom 321, lateral peripheral wall 311, and cover top 33 are embedded in the embedding groove 145 of the plug guide portion 14. The longitudinal peripheral wall 312 and the longitudinal cover bottom 322 are embedded in the embedded groove 146. The top surface of the cover top 33 is exposed outside the top wall 11 of the plug body 10. The longitudinal peripheral wall 312 serves as a contact portion and contacts the contact protrusion 653 of the socket reinforcement 60.

[0067] The plug terminal 20 includes a plug terminal solder foot 24 extending longitudinally out of the top wall 11 from the upper surface of the top wall 11, a first plug terminal contact portion 22 bent from the solder foot 24 along the surface of the top wall 11 to the inner surface of the plug side wall 12, and a second plug terminal contact portion 23 bent in the opposite direction from the lower end of the first plug terminal contact portion 22 and extending to the outer surface of the plug side wall 12. The second plug terminal contact portion 23 has a groove structure. The free end of the second plug terminal contact portion 23 is bent toward the first plug terminal contact portion 22 to form an embedded end portion 25 that is embedded in the plug side wall 12. The embedded end portion 25 prevents the second plug terminal contact portion 23 from separating from the outer surface of the plug side wall 12.

[0068] When plug A is inserted into socket B, the longitudinal outer wall 312 of plug reinforcement 30 first contacts the guide portion 611, guide portion 662, and guide ramp 663 and is guided to align with the receiving cavity 433 of the plug guide portion. As it continues to press down, the contact protrusion 653 makes electrical contact with the contact portion (longitudinal outer wall) 312 of plug reinforcement 30 to transmit current. The elastic main arm 652 is deformed towards the thin-walled portion 4422 and provides elastic force. The plug reinforcement 30 and socket reinforcement 60 transmit current through the two longitudinal contact portions 312 and two contact protrusions 653, achieving a current carrying capacity of up to 15 amperes.

[0069] When the plug A mates with the socket B, the island portion 45 is received within the island portion receiving cavity 13 of the plug A, the plug sidewall 12 of the plug A is received within the plug sidewall 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 engaged 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 in electrical contact with the first and second contact portions 53 and 52 of the socket terminal 50, respectively.

[0070] In this embodiment, the lateral cover bottom 321 and the longitudinal cover bottom 322 are formed by bending and extending respectively, and there is a certain gap between them; in another embodiment, the lateral cover bottom 321 and the longitudinal cover bottom 322 can also be an integral structure, manufactured by stretching process, so that the exposed surface of the plug reinforcement 30 is further increased, thereby increasing the heat dissipation capacity of the plug reinforcement 30 and improving the current carrying capacity.

[0071] When in operation, current is conducted from the contact protrusion 653 of socket B to the longitudinal peripheral wall 312 of the plug reinforcement 30, and flows into the corresponding printed circuit board along the longitudinal peripheral wall 312, the transverse peripheral wall 311, the extension base 331 and a pair of solder feet 332.

[0072] The thickness of the plug reinforcement 30 is greater than the thickness of the plug terminal 20 so that the plug reinforcement 30 has a lower impedance.

[0073] Compared to the prior art, in this application, the top 33 of the plug reinforcement 30 of the board-to-board plug A is bent and extended from the top of the outer perimeter wall 31 onto the top wall 11. This increases the area of ​​the plug reinforcement 30, tightly wraps the plug guide 14 to increase the strength of the plug guide 14, and at the same time increases the surface area of ​​the plug reinforcement 30, creating favorable conditions for heat dissipation problems that may occur during high current transmission.

[0074] Example 2

[0075] Please see Figure 2 , Figures 13 to 15 The diagram shown is a schematic diagram of Embodiment 2 of the board-to-board plug A of this application.

[0076] Compared to Embodiment 1, Embodiment 2 differs in that: the extension base 331 of the top cover 33 of the plug reinforcement 30 is bent upward at the junction with the solder foot 332 to form a bent portion 334. This bent portion 334 causes the horizontal position of the solder foot 332 to be higher than the horizontal position of the extension base 331. Ultimately, the extension base 331 is completely enclosed within the top wall 11, meaning it is not exposed to the outside. The guide slope 323 is further bent inward and enclosed within the plug guide portion 14.

[0077] Meanwhile, in both Embodiment 1 and Embodiment 2, the solder feet 332 of the plug reinforcement 30 and the solder feet 24 of the plug terminal 20 are in the same direction. After injection molding, this facilitates the simultaneous cutting of the strips connected to the solder feet 332 of the plug reinforcement 30 and the strips connected to the solder feet 24 of the plug terminal. In other words, the strip cutting of the plug reinforcement 30 and the plug terminal 20 is completed in a single process.

[0078] Example 2 is a similar technical solution to Example 1, both of which achieve the goal of strengthening the top wall 11 by extending the base 331, while increasing the heat dissipation area.

[0079] Example 3

[0080] Please continue reading. Figures 16 to 20 The diagram shown is a schematic diagram of Embodiment 3 of the board-to-board connector A of this application.

[0081] The plug body and plug terminals of the board-to-board plug A in this embodiment three are the same as those in embodiments one and two, and will not be described again here.

[0082] The main difference is that the plug reinforcement 30 in Embodiment 3 includes a cover bottom 32 covering the bottom surface 141 of the plug guide portion 14, an outer wall 31 bent downward from both longitudinal ends and the transverse outer side of the cover bottom 32 and covering the longitudinal outer side 143 and the transverse outer side 142, and a connecting portion 34 formed by bending upward from the transverse inner side of the cover bottom 32.

[0083] The cover bottom 32 extends longitudinally and covers the bottom surface 141. The outer perimeter wall 31 includes a longitudinal outer perimeter wall 312 that bends upward from both longitudinal sides of the cover bottom 32 and covers the longitudinal outer side 143, and a transverse outer perimeter wall 311 that bends upward from the transverse outer side of the cover bottom 32 and covers the transverse outer side 142. The surface of the transverse outer perimeter wall 311 is stamped to form a protrusion 313 that protrudes laterally outward. The longitudinal outer perimeter wall 312 serves as a contact portion for electrical contact with the contact protrusion 653 of the socket terminal 60 for electrical transmission. There is a gap between the longitudinal outer perimeter wall 312 and the transverse outer perimeter wall 311. In one embodiment, the longitudinal outer perimeter wall 312 and the transverse outer perimeter wall 311 can also be a seamless integral structure, manufactured by a stamping and stretching process. This can effectively enhance the strength of the plug guide portion 14, but may reduce the bonding force between the plug guide portion 14 and the plug reinforcement 30.

[0084] The connecting portion 34 is formed by bending upward from the inner side of the cover bottom 32, and a guide slope 323 is formed at the bend. The connecting portion 34 includes a vertical connecting portion 341 formed by bending upward from the cover bottom 32, a horizontal connecting portion 342 formed by bending upward from the top of the vertical connecting portion 341, and solder feet 343 extending longitudinally from both sides of the horizontal connecting portion 342 beyond the plug body 10. A through hole 344 is formed through the horizontal connecting portion 342 to allow plastic material to be filled to increase the bonding force between the plug body 10 and the plug reinforcement 30, and the upper surface of the horizontal connecting portion 342 is exposed outside the top wall 11 of the plug body 10 for heat dissipation. The width of the vertical connecting portion 341 is not less than the width of the horizontal plane of the transverse wall of the island receiving cavity 13 to maximize the width of the vertical connecting portion 341.

[0085] The thickness of the plug reinforcement 30 is greater than the thickness of the plug terminal 20. The solder foot 343 and the solder foot 24 of the plug terminal are located in the same direction, which facilitates the cutting of the strip of the plug terminal 20 and the plug reinforcement 30 in one operation.

[0086] In this embodiment, the plug reinforcement 30 extends upward from the lateral inner side of the cover bottom 32 to form the connecting part 34, so that the connecting part 34 does not overlap with the cover bottom 32 in the vertical direction, which reduces the stamping difficulty, while taking into account the wrapping area to increase strength and heat dissipation capacity.

[0087] Example 4

[0088] Please continue reading. Figure 2 , Figures 21 to 25 The diagram shown is a schematic representation of embodiment four of the board-to-board connector A in this application. Embodiment four differs significantly from the aforementioned embodiments, but shows greater similarity to connector A in the background art documents.

[0089] The plug body 10 and plug terminals 20 of the board-to-board plug A in this embodiment four are the same as those in embodiment three, and will not be described again here.

[0090] In this embodiment, the plug reinforcement 30 is integrally formed on the plug guide portion 14 of the plug body 10. Each plug guide portion 14 has a pair of 30a and 30b arranged in the longitudinal direction, which are two independent components. The plug terminal 20 includes two rows of plug terminals 20 arranged in the longitudinal direction. Each row of plug terminals 20 has two plug reinforcements 30a or 30b at its two transverse ends, and the plug terminals 20 and the plug reinforcement 30 are stamped from the same sheet of metal and connected to the same strip.

[0091] Each plug reinforcement 30a, 30b includes a bottom cover 32, an outer wall 31 formed by bending downward from the outer side laterally and longitudinally of the bottom cover 32, a weld foot 315 formed by bending from the bottom of the outer wall 31, and a reinforcing top 35 formed by extending from the inner side laterally of the bottom cover 32 along the inclined surface 144.

[0092] The outer perimeter wall 31 includes a transverse outer perimeter wall 311 that bends downward from the outer side of the bottom cover 32 and wraps around the outer side 142, and a longitudinal outer perimeter wall 312 that extends downward from the outer side of the bottom cover 32 and wraps around the outer side 143. The bottom cover 32 covers the bottom surface 141. The upper width of the transverse outer perimeter wall 311 is greater than the lower width, creating a gap between the transverse outer perimeter wall 311 and the bottom cover 32. This gap is filled with plastic to enhance the bonding force between the transverse outer perimeter wall 311 and the plug guide 14. The longitudinal outer perimeter wall 312 extends downward from the side near the transverse outer perimeter wall 311 to be flush with the top wall 11. The top end of the longitudinal outer perimeter wall 312 near the plug terminal 20 bends outward to form the solder foot 315, which is flush with the top surface of the plug terminal solder foot 24. The thickness of the plug terminal 20 is the same as the thickness of the plug reinforcement 30.

[0093] A guide slope 323 is formed at the upward bend of the inner side of the cover bottom 32. The reinforcing top 35 is formed by extending upward from the inner side of the cover bottom 32 and then bending horizontally. Specifically, the reinforcing top 35 includes a vertical arm 351 extending upward from the guide slope 323 along the slope 144 and a horizontal arm 352 formed by bending from the top of the vertical arm 351 towards the inner side. A through hole 353 is formed through the free end of the horizontal arm 352. The free end of the horizontal arm 352 is exposed in the island receiving cavity 13 of the plug body 10. The through hole 353 is filled with the plastic material to enhance the bonding force.

[0094] In this embodiment, the board-to-board plug A divides the plug reinforcement 30 into two independent parts in the longitudinal direction, allowing the plug reinforcement 30 and the plug terminal 20 to be stamped together in one step. This significantly reduces production costs and mold development costs. Simultaneously, the design of the reinforcing top 35 enhances the strength of the plug guide 14 and increases the heat dissipation area, facilitating the transmission of high currents.

[0095] The above description is merely an embodiment of this application and is not intended to limit the scope of this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the scope of the claims of this application.

Claims

1. A plug reinforcer characterized by, The connecting portion comprises a vertical connecting portion upwardly extending from the covering bottom and a horizontal connecting portion upwardly extending from an upper end of the vertical connecting portion; a through hole is formed in the horizontal connecting portion, and the through hole is filled with plastic material to increase the bonding force; An inclined surface is formed at a bending position of the covering bottom and the connecting portion. The soldering leg is formed on both longitudinal sides of the horizontal connecting portion.

2. The plug reinforcer of claim 1, wherein, The plug body comprises a top wall, a pair of plug side walls downwardly extending from both longitudinal sides of the top wall, plug guide portions formed at both transverse ends of the plug body, and an island portion receiving cavity formed between the top wall, the pair of plug side walls, and the plug guide portions; the plug terminals are integrally formed on the pair of plug side walls; the plug reinforcing member is integrally formed on the plug guide portions; the covering bottom covers a bottom surface of the plug guide portions; the transverse peripheral wall covers a transverse outer side surface of the plug guide portions; the longitudinal peripheral wall covers a longitudinal outer side surface of the plug guide portions; and the soldering leg extends out of a longitudinal outer side of the plug body.

3. A board-to-board plug characterized by comprising: The connecting portion comprises a vertical connecting portion upwardly extending from the covering bottom and a horizontal connecting portion upwardly extending from an upper end of the vertical connecting portion; the soldering leg is formed on both longitudinal sides of the horizontal connecting portion; and a top surface of the horizontal connecting portion is exposed to a surface of the top wall.

4. The board-to-board plug according to claim 3, wherein A through hole is formed in the horizontal connecting portion, the through hole is filled with plastic material, and an inclined surface is formed at a bending position of the covering bottom and the connecting portion.

5. The board-to-board plug according to claim 4, wherein A gap is formed between the longitudinal peripheral wall and the transverse peripheral wall, and the gap is filled with plastic material.

6. The board-to-board plug according to claim 4, wherein The longitudinal peripheral wall, the transverse peripheral wall, and the covering bottom are integrally formed in a seamless structure, and the structure is formed through a stamping and drawing process.

7. The board-to-board plug according to claim 4, wherein The thickness of the plug reinforcing member is greater than the thickness of the plug terminals; the plug terminals comprise plug terminal soldering legs arranged in a row with the soldering legs of the plug reinforcing member; and the soldering legs of the plug reinforcing member are flush with top surfaces of the plug terminal soldering legs.

8. The board-to-board plug according to claim 4, wherein The plug terminal soldering legs are formed in a longitudinal direction from an upper surface of the top wall; the plug terminals further comprise plug terminal first contact portions bent from the plug terminal soldering legs to inner side surfaces of the plug side walls along the surface of the top wall, and plug terminal second contact portions bent in a reverse direction from lower ends of the plug terminal first contact portions to outer side surfaces of the plug side walls.

9. The board-to-board plug according to claim 8, wherein ​ 10. A board-to-board connector assembly characterized by comprising: The plug includes a plug body, plug terminals, and a plug stiffener, the plug body includes a bottom wall, plug side walls projecting upwardly from longitudinally opposite ends of the bottom wall, plug guide portions formed at laterally opposite ends of the plug body, and an island portion projecting upwardly from the bottom wall, the plug stiffener covers outside of the plug guide portions, a plug side wall receiving cavity is formed between the plug side walls and the island portion, when the plug is mated with the socket, the island portion of the plug body is buckled into the island portion receiving cavity of the socket, the plug side walls are inserted into the plug side wall receiving cavity, the plug terminals are electrically contacted with the socket terminals, the plug stiffener is electrically contacted with the socket stiffener, and a longitudinally peripheral wall of the plug stiffener serves as a contact portion to be electrically contacted with the socket stiffener.

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