Board to Board Plug

Abstract

A board-to-board plug includes an insulating base body integrally formed with a metal insert, a plurality of conductive terminals disposed in the insulating base body, a cable assembly disposed at the rear end of the insulating base body and electrically connected to the conductive terminals, and a shielding shell coated outside the insulating base body, the insulating base body includes a butt end vertically penetrated to form a terminal slot, the butt end includes a top wall, a protrusion protruding downward from the front end of the top wall, and an inner plug-in space opened on the lower surface of the butt end and located behind the protrusion, the metal insert includes a reinforcing structure formed outside the reinforcing arm portion, the reinforcing structure includes a reinforcing bottom wall formed on the bottom surface of the reinforcing arm portion, a front covering portion bent upward from the front end of the reinforcing bottom wall and extending to form on the front wall surface of the reinforcing arm portion, the front covering portion being punched forward to form a convex bump. The board-to-board plug of the present application can achieve more stable contact between the plug and the socket.

Description

Technical Field

[0001] The present application relates to the field of radio frequency connectors, and in particular to a board-to-board plug. Background Art

[0002] The PCB boards of existing mobile phones usually have RF connectors connected to coaxial cables to transmit RF signals, such as antenna signals, high-frequency signals between different boards, etc. In the 5G communication era, multi-antenna transmission is required, and traditional single-channel RF connectors can no longer meet the requirements. Among the existing alternatives, there are technical solutions that use board-to-board connectors to achieve multi-channel transmission of antenna signals. Patent No. 201910206829.X of the People's Republic of China discloses a cable connector device that transmits multi-channel antenna signals through a coaxial cable combination. The cable connector device includes an insulating body, conductive terminals and metal sheets integrally formed in the insulating body, a shielding shell, and a cable assembly. Summary of the invention

[0003] In view of this, it is necessary to provide a board-to-board plug that can push the insulating base body backward so that the contact portion on the insulating base body can more reliably and closely contact the socket terminal.

[0004] In order to solve the above technical problems, the present application provides a board-to-board plug, including an insulating seat body integrally formed with a metal insert, a plurality of conductive terminals placed in the insulating seat body, a cable assembly placed at the rear end of the insulating seat body and electrically connected to the conductive terminals, and a shielding shell covered outside the insulating seat body, the insulating seat body includes a butt end vertically penetrated to form a terminal groove, a terminal block formed by extending backward from the butt end, and a pair of extension arms formed by extending backward from the lateral sides of the terminal block, the butt end includes a top wall, a protrusion formed by protruding downward from the front end of the top wall, an inner plug-in space opened on the lower surface of the butt end and located at the rear side of the protrusion, a plurality of partitions separating a plurality of the terminal grooves, and a reinforcing arm formed on the lateral sides of the protrusion and the inner plug-in space, the metal insert includes a reinforcing structure formed outside the reinforcing arm portion, the reinforcing structure includes a reinforcing bottom wall formed on the bottom surface of the reinforcing arm portion, and a front covering portion bent upward from the front end of the reinforcing bottom wall and extended to form on the front wall surface of the reinforcing arm portion, and the front covering portion is punched forward to form a convex bump.

[0005] Preferably, the shielding shell includes a cover plate covering the upper side of the insulating seat, a shielding front frame formed by bending downward and extending from the front end of the cover plate, and a shielding side frame formed by bending backward and extending from the lateral sides of the shielding front frame, an external plug-in space is formed between the protruding portion, the reinforcing arm portion, the shielding front frame and the shielding side frame, and the convex bump is exposed in the external plug-in space.

[0006] Preferably, the board-to-board plug is docked with the board-to-board socket, and the convex bump abuts against a metal piece of the board-to-board socket inserted into the external plug-in space.

[0007] Preferably, the reinforcement structure also includes a rear covering portion bent upward from the rear end of the reinforced bottom wall and covering the rear wall surface of the reinforcing arm portion, and a side covering portion bent upward from the outer side of the reinforced bottom wall and covering the side wall surface of the reinforcing arm portion, the side covering portion extends upward to form a spot welding portion flush with the upper surface of the top wall, and the spot welding portion is spot welded to the lower surface of the cover plate.

[0008] Preferably, the reinforcement structure also includes a connecting strip connected to the top of the front covering portion, the connecting strip is formed at the front end of the protruding portion, the front end of the connecting strip protrudes to form a positioning convex portion with positioning steps on both lateral sides, a positioning hole is formed at the bending part between the cover plate and the shielding front frame, the positioning convex portion is inserted into the positioning hole, and the positioning steps are abutted and limited against the lateral sides of the positioning hole.

[0009] Preferably, the protrusion is formed with a front protrusion on the lower surface of the positioning protrusion of the connecting strip, and the front protrusion thickens the positioning protrusion in the vertical direction so as to be located within the positioning hole at the upper limit in the vertical direction.

[0010] Preferably, the side covering portion further comprises an upper extension portion formed by bending upward and extending from the reinforced bottom wall and a recessed portion formed by bending inward from the upper extension portion into the reinforced arm portion, and the spot welding portion is formed by horizontally bending from the recessed portion.

[0011] Preferably, the metal insert includes a rear plate portion formed on both lateral sides within a pair of the extension arms, a front plate portion extending forward from the rear plate portion, and a clamping portion formed by bending and extending upward from both lateral sides of the rear plate portion and covering the outside of the extension arms. The reinforced bottom wall is formed by extending forward and outward from both lateral sides of the front end of the front plate portion, and the reinforced bottom wall is on the same horizontal plane as the plate body.

[0012] Preferably, the upper surface of the terminal block is lower than the upper surface of the docking end, the terminal groove penetrates the docking end in the vertical direction, the terminal groove extends backward from the upper side of the docking end to form a first groove located on the rear upper surface of the docking end and a second groove formed on the terminal block, the insulating seat body is provided with a filling groove between the first groove and the second groove, the conductive terminal includes a retaining portion limited in the first groove, a welding foot extending backward from the retaining portion and limited in the second groove, and an elastic contact arm extending forward from the retaining portion to the terminal groove, the rear end of the welding foot is connected to the terminal strip and then positioned in the terminal groove, the first and second grooves, and then injection molded to form an insulating block filled in the filling groove.

[0013] Preferably, the elastic contact arm includes a first elastic arm extending obliquely forward and downward, a second elastic arm extending from the front end of the first elastic arm by bending downward, a third elastic arm extending obliquely backward and upward from the end of the second elastic arm, a bent end formed by bending forward and upward from the end of the third elastic arm, and a contact portion formed at the bending position between the third elastic arm and the bent end, and the insulating block includes a protruding pressing portion extending toward the terminal slot and located above the first elastic arm, the front end of the protruding pressing portion is only located above the first elastic arm, and the contact portion is located in the inner plug-in space.

[0014] The front covering portion of the reinforcement structure of the board-to-board plug of the present application is punched forward to form a convex bump protruding into the external plug-in space. When the board-to-board plug of the present application is inserted into the docking socket, the convex bump is held backward by the metal fixing part of the socket, so that the contact portion of the conductive terminal on the docking end exposed in the internal plug-in space can contact the conductive terminal of the socket more uniformly and tightly backward; at the same time, the reinforcement structure realizes friction through metal parts when the plug and the socket are plugged in, so as to avoid damage to the docking end of the insulating seat body, and the front, rear and side covering portions of the reinforcement structure are directly bent downward from the reinforcement bottom wall to ensure the bending accuracy, and an arc surface structure is formed at the bending position, and docking is first carried out through the arc surface structure to avoid hard interference and damage to the reinforcement structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The drawings described herein are used to provide a further understanding of the present application and constitute a part of the present application. The illustrative embodiments of the present application and their descriptions are used to explain the present application and do not constitute an improper limitation on the present application. In the drawings:

[0016] Embodiment 1

[0017] Figure 1 It is a three-dimensional assembly diagram of a board-to-board plug in the first embodiment;

[0018] Figure 2 A three-dimensional composite diagram of the board-to-board plug of Example 1 from another angle;

[0019] Figure 3 It is a three-dimensional exploded view of the board-to-board plug of Example 1;

[0020] Figure 4 is a three-dimensional diagram of a metal insert of a board-to-board plug in Example 1;

[0021] Figure 5 A three-dimensional view of the metal insert of the board-to-board plug of the first embodiment from another angle;

[0022] Figure 6 A three-dimensional view of an insulating base body of a board-to-board plug in Example 1 and a partial enlarged view thereof;

[0023] Figure 7 A three-dimensional view of the insulating base of the board-to-board plug of the first embodiment from another angle;

[0024] Figure 8 It is a three-dimensional combination diagram of the metal insert and the insulating seat body of the board-to-board plug of the first embodiment;

[0025] Fig. 9 A three-dimensional view of the metal insert and the insulating seat of the board-to-board plug of the first embodiment from another angle;

[0026] Fig.10 It is a three-dimensional diagram of the shielding shell of the board-to-board plug of the first embodiment;

[0027] Fig.11 is a three-dimensional diagram of a conductive terminal of a board-to-board plug in Embodiment 1;

[0028] Fig.12 A three-dimensional view and a partial enlarged view of the conductive terminal connection strip of the board-to-board plug of Example 1 being formed on the insulating seat by the insulating block;

[0029] Fig.13 for Fig.12 A three-dimensional image after the conductive terminal strip is removed;

[0030] Fig.14 For along Fig.13 A cross-sectional view of the dashed line DD shown;

[0031] Fig.15 For along Figure 1 A cross-sectional view taken along the dashed line AA shown;

[0032] Fig.16 For along Figure 1 A cross-sectional view of the dashed line BB shown;

[0033] Fig.17 For along Figure 1 The cross-sectional view and partial enlarged view of the CC dotted line are shown;

[0034] Fig.18 It is a three-dimensional diagram of a cable bracket of a board-to-board plug in Example 1;

[0035] Fig.19 A three-dimensional view of a metal frame of a cable support of a board-to-board plug in accordance with the first embodiment;

[0036] Fig. 20 It is a three-dimensional diagram showing the electrical connection between the metal frame and the ground terminal of the board-to-board plug according to the first embodiment.

[0037] Embodiment 2

[0038] Fig.21This is a three-dimensional composite diagram of the board-to-board plug of Example 2 without the shielding shell;

[0039] Fig. 22 It is a position state diagram of the metal insert and the conductive terminal of the board-to-board plug of the second embodiment;

[0040] Fig.23 It is a three-dimensional view of the metal insert of the board-to-board plug of the second embodiment.

[0041] Embodiment 3

[0042] Fig.24 A three-dimensional diagram showing the metal insert, the isolation assembly and the conductive terminal of the board-to-board plug of the third embodiment being integrally formed in the insulating seat;

[0043] Fig.25 It is a three-dimensional diagram of the insulating seat body of the board-to-board plug of the third embodiment;

[0044] Fig.26 A three-dimensional view showing another angle of the metal insert, the isolation assembly and the conductive terminal of the board-to-board plug of the third embodiment being integrally formed in the insulating seat;

[0045] Fig. 27 It is a three-dimensional diagram of the isolation assembly of the board-to-board plug of Example 3;

[0046] Fig.28 A diagram showing the position relationship between the isolation component and the conductive terminals of the board-to-board plug of Example 3;

[0047] Fig.29 It is a three-dimensional diagram of a part of the metal insert of the board-to-board plug of the third embodiment.

[0048] Main component symbols

[0049] Shielding shell-10; cover plate-11; pressing block-111; shielding front frame-12; positioning hole-121; shielding side frame-13; side frame body-131; inner folding part-132; tail frame-133; chamfered surface-134; outer package-14; front package-141; rear package-42; bent covering part-143; insulating seat-20; docking end-21; top wall-211; protruding part-212; fence-213; terminal slot-214; inner slot-215; front protrusion-216; extension arm-22; limiting notch-223; filling slot-23; terminal block-24; inner concave Part-249; first groove-241; second groove-242; first clamping block-243; second clamping block-244; third clamping block-245; thickened part-25; reinforced arm part-26; front wall surface-261; rear wall surface-262; side wall surface-263; bottom surface-264; protruding table surface-2641; recessed table surface-2642; metal insert-30; plate body-31; front plate part-311; rear plate part-312; clamping part-32; vertical wall-321; bent top-322; arc edge-323; reinforced bottom wall-33; first reinforced bottom wall-331; The second reinforced bottom wall-332; the rear covering part-341; the front covering part 342; the convex part-343; the side covering part-35; the upper extension part 351; the recessed part-352; the spot welding part-353; the connecting strip-36; the positioning convex part-361; the positioning step-362; the conductive terminal-40; the holding part-41; the welding foot-42; the elastic contact arm-43; the first elastic arm-431; the second elastic arm-432; the third elastic arm-433; the bending end-434; the contact part-435; the sinking part-44; the cable bracket-50; the welding piece-51; the welding piece body-511; the stamping convex part Start-512; cable limiting groove-513; upward bending portion-515; connecting foot-516; conductive glue or solder-52; insulating block-60; protruding pressing portion-61; cable-C; center conductor-C1; inner insulating layer-C2; braided layer-C3; outer insulating layer-C4; isolation component-70; isolation sheet-71; first isolation body-711; second isolation body-712; third isolation body-713; notch-714; avoidance portion-715; connecting portion-72; connecting body-721; bent connecting portion-722; external plug-in space-S1; clamping space-S3. DETAILED DESCRIPTION

[0050] In order to make the purpose, technical solution and advantages of this application clearer, the technical solution of this application will be clearly and completely described below in combination with the specific embodiments of this application and the corresponding drawings. Obviously, the described embodiments are only part of the embodiments of this application, not all of them.

[0051] The definition of direction in this application is based on Figure 1The X direction is the front in the front-back direction (longitudinal direction), the Y direction is the right in the left-right direction (lateral direction), and the Z direction is the top in the up-down direction (vertical direction).

[0052] Embodiment 1

[0053] Figures 1 to 20 This is a description drawing of the first embodiment, which shows the product structure of the first embodiment in detail.

[0054] See also Figures 1 to 3 As shown, the board-to-board plug of the present application includes an insulating base 20, a metal insert 30 formed in the insulating base 20, a terminal module assembled in the insulating base 20, a cable assembly and a shielding shell 10 covering the outside of the insulating base 20.

[0055] See also Figure 4 , Figure 5 As shown, the metal insert 30 includes a plate body 31 having a front plate 311 and a rear plate 312, a clamping portion 32 formed by bending upward and extending from both lateral sides of the rear plate 312, and a reinforcing structure formed by extending forward from both lateral sides of the front plate 311. The clamping portion 32 includes a vertical wall 321 formed by bending upward and extending vertically from both lateral sides of the rear plate 312, a bent top 322 formed by bending inward and extending from the top of the vertical wall 321, and an arc edge 323 formed at the junction of the vertical wall 321 and the bent top 322. The reinforcing structure includes a reinforcing bottom wall 33 extending forward and outward from both sides of the front plate 311, a rear covering part 341 extending upward from the rear side of the reinforcing bottom wall 33, a front covering part 342 extending upward from the front side of the reinforcing bottom wall 33, a side covering part 35 extending upward from the lateral outer side of the reinforcing bottom wall 33, and a connecting strip 36 connecting a pair of tops of the front covering parts 342. The front covering part 342 is formed by forward stamping to form a convex hump 343, and the side covering part 35 includes an upper extension part 351 extending upward, a recessed part 352 extending inward from the upper extension part 351, and a spot welding part 353 extending horizontally from the top of the recessed part 352. The connecting strip 36 includes a positioning convex part 361 protruding forward and a positioning step 362 formed on both sides of the positioning convex part 361.

[0056] Please continue reading Figures 6 to 9As shown, the insulating seat 20 includes a butt end 21, a terminal block 24 extending backward from the butt end 21, and a pair of extension arms 22 extending backward from both sides of the terminal block 24. The butt end 21 includes a top wall 211, a protrusion 212 extending downward from the front end of the top wall 211, a terminal slot 214 formed by penetrating the top wall 211 and the protrusion 212, a plurality of fences 213 separating the terminal slots 214, and an inner plug-in space 215 provided on the bottom surface of the rear side of the protrusion 212. The inner concave portions 249 are formed by inward depressions on both sides of the terminal block 24. Two reinforcing arm portions 26 are formed on both sides of the terminal slot 214, and the reinforcing arm portions 26 include a front wall surface 261, a rear wall surface 262, an outer wall surface 263 and a bottom surface 264 located on the outer side of the horizontal direction, respectively, located on the front and rear sides. The protrusion 212 and the inner plug-in space 215 are located between the pair of reinforcing arm portions 26. The rear side of the bottom of the partition 213 is recessed upward to become a part of the inner plug-in space 215 .

[0057] A terminal block 24 is formed at the top of the insulating seat body 20 at the rear side of the butt end 21, and a filling groove 23 is provided between the terminal block 24 and the butt end 21. The top of the terminal groove 214 extends backward to form a first groove 241 and a second groove 242 at the front and rear ends of the filling groove 23, respectively. The first groove 241 is located at the top rear side of the butt end 21, and the second groove 242 is located on the terminal block 24. First clamping blocks 243 are provided on both sides of the first groove 241, and second clamping blocks 244 and third clamping blocks 245 are provided on both sides of the front and rear ends of the second groove 242.

[0058] The metal insert 30 is integrally injection molded with the insulating seat 20, and the plate body 31 is molded on both sides of the extension arm 22 and the terminal block 24. The bottom of the front plate 311 is covered by the insulating seat 20 and is formed with a thickened portion 25 covering the bottom of the front plate 311. The clamping portion 32 is formed on a pair of the extension arms 22, and the vertical wall 321 and the bent top 322 of the clamping portion 32 are respectively covered on the lateral outer side and the top of the extension arm 22. The space between the plate body 31 and the pair of the extension arms 22 constitutes a clamping space S3 for assembling the cable assembly, and the extension arm 22 is provided with a limiting notch 223 inside the clamping space S3. The reinforcing structure is formed on the reinforcing arm portion 26 of the butt end 21, the front covering portion 342 covers the front wall surface 261 of the side wall 26, the rear covering portion 341 covers the rear wall surface 262, the side covering portion 35 covers the side wall surface 263, and the reinforcing bottom wall 33 covers the bottom surface 264 of the side wall 26. The upper extension portion 351 of the side covering portion 35 covers the side wall surface 263, the recessed portion 352 is embedded in the reinforcing arm portion 26, and the spot welding portion 353 extends to the upper surface of the top wall 211 of the butt end 21 and is fixed to the shielding shell 10 by spot welding.

[0059] Please continue reading Figures 11 to 13 , Fig.15As shown, the terminal module includes a plurality of conductive terminals 40 and an insulating block 60 for forming and fixing the conductive terminals 40 in the insulating seat 20. The conductive terminals 40 include a plurality of signal terminals and ground terminals arranged at intervals. Each conductive terminal 40 includes a retaining portion 41 limited in the first groove 241, a welding foot 42 extending backward from the retaining portion 41 and limited in the second groove 242, and an elastic contact arm 43 formed by extending forward from the retaining portion 41 and located in the terminal groove 214. The elastic contact arm 43 is suspended in the terminal groove 214, and includes a first elastic arm 431 extending obliquely forward and downward, a second elastic arm 432 extending downward from the front end of the first elastic arm 431, a third elastic arm 433 extending obliquely backward and upward from the end of the second elastic arm 432, a bent end portion 434 bent forward and upward from the end of the third elastic arm 433, and a contact portion 435 formed at the bending position between the third elastic arm 433 and the bent end portion 434. The rear end of the holding portion 41 extends obliquely downward to form a sinking portion 44, and the soldering foot 42 is formed by bending from the rear end of the sinking portion 44 and extending horizontally. The sinking portion 44 is suspended in the filling groove 23 and is filled and fixed by the insulating block 60. The insulating block 60 fills the filling groove 23 to fix the conductive terminal 40 on the insulating seat 20. The first clamping blocks 243 on both sides of the first groove 241 limit the holding portion 41, and the second clamping blocks 244 on both sides of the second groove 242 limit the soldering foot 42.

[0060] All the conductive terminals 40 are connected to the terminal strip 45 through the rear end of the solder pin 42, and the upper surface of the connection between the terminal strip 45 and the solder pin 42 is provided with a pre-breaking groove 46. The conductive terminals 40 of this embodiment are connected as a whole through the terminal strip 45 and inserted into the terminal slot 214 and the first and second grooves 241, 242. After that, the insulating block 60 is injection molded or hot-melt molded again, so that the insulating block 60 fills the filling slot 23 and fixes the conductive terminals 40. After molding the insulating block 60, the terminal strip 45 is broken upward. The insulating block 60 also includes a protruding pressing portion 61 formed by extending toward the terminal slot 214 and located above the first elastic arm 431, and the front end of the protruding pressing portion 61 does not contact the fence 213.

[0061] Please continue reading Fig.11As shown, the shielding shell 10 includes a cover plate 11 covering the top of the insulating seat 20 and the insulating block 60, a shielding front frame 12 formed by bending downward and extending from the front end of the cover plate 11, a shielding side frame 13 formed by bending backward and extending from the shielding front frame 12, and an outer package 14 formed by bending downward from the two lateral outer sides of the cover plate 11 and surrounding the shielding side frame 13. A positioning hole 121 is provided at the junction of the cover plate 11 and the shielding front frame 12, and the shielding side frame 13 includes a side frame body 131 formed by bending backward from the shielding front frame 12, an inner folding part 132 formed by bending inward from the side frame body 131 and abutting against the two sides of the terminal block 24, and a tail frame 133 formed by extending backward from the inner folding part 132. The outer package 14 includes a front package 141 surrounding the outer periphery of the side frame 131 and the inner folding portion 132, a rear package 142 formed by bending downward and extending from the cover plate 11 at both sides of the tail frame 133, and a bent covering portion 143 formed by bending inward from the bottom of the rear package 142. An external plug-in space S1 is formed between the shielding front frame 12, the side frame 131 and the docking end 21. The spot welding portion 353 of the side covering portion 35 of the reinforcement structure is flush with the surface of the top wall 211 of the docking end 21 and fits the cover plate 11, and the cover plate 11 is electrically in contact with the spot welding portion 353 or fixed by spot welding.

[0062] Please continue reading Figures 14 to 20 As shown, the cable assembly includes a plurality of cables C and a cable bracket 50 for fixing the plurality of cables C together. The cables C are coaxial cables, and the cables C include a central conductor C1, an inner insulating layer C2 wrapped around the outside of the central conductor C1, a braided layer C3 wrapped around the periphery of the inner insulating layer C2, and an outer insulating layer C4 wrapped around the braided layer C3. The cable bracket 50 includes a welding piece 51 fixed to the upper surface of the rear plate 312 and a conductive glue or solder 52 for fixing the braided layer C3 of the plurality of cables C to the welding piece 51. The welding piece 51 includes a welding piece body 511 fixed to the rear plate 312 by spot welding, an upward bending portion 515 formed by bending upward and extending from the front end of the welding piece body 511, and a connecting foot 516 formed by bending forward and extending vertically from the upward bending portion 515. The soldering piece body 511 includes a plurality of stamping protrusions 512 stamped upward from the soldering piece body 511 and a cable limiting groove 513 located between the stamping protrusions 512 and used for spacing and limiting the braided layer C3. The connecting pins 516 and the central conductor C1 of the cable C are arranged at intervals and are respectively overlapped on the welding pins 42 of the ground terminal and the signal terminal on the terminal block 24, and then the connecting pins 516 and the central conductor C1 are welded to the welding pins 42 through a welding process, and the third clamping block 245 performs spacing and limiting on the connecting pins 516 and the central conductor C1.

[0063] The cable assembly is assembled in a clamping space S3 located above the rear plate 312 and between a pair of the extension arms 22 , and the welding piece 51 is fixed to the rear plate 312 by spot welding.

[0064] Key References Fig.17 As shown, during assembly, the bent covering portion 143 of the shielding shell 10 is not bent first, and the insulating seat 20 and the conductive terminals 40 and the metal insert 30 thereon are first buckled into the shielding shell 10. At this time, the arc edge 323 of the clamping portion 32 of the metal insert 30 is buckled along the chamfered surface 134 of the tail frame 133 of the shielding shell 10. Through the guiding effect of the arc edge 323 and the chamfered surface 134, it can be easily buckled in, avoiding overlapping in the vertical direction and causing damage to the tail frame 133 or the extension arm 22.

[0065] In the first embodiment, the top of the vertical wall 321 of the clamping portion 32 is bent inward to form a bent top 322, so that a smooth arc edge 323 is formed on the outer side of the top of the vertical wall 321. An inclined chamfered surface 134 is provided on the inner top of the tail frame 133 of the shielding shell 10 to guide the arc edge 323, so that the vertical wall 321 of the metal insert 30 can be easily inserted between a pair of the tail frames 133, thereby avoiding damage to the tail frame 133 and / or the vertical wall 321 and the second extension arm 22 in the vertical wall 321 during insertion in the vertical overlapping direction.

[0066] Key References Fig.19 , Fig. 20 As shown, the first embodiment of the present invention provides a connecting foot 516 on the welding piece 51 of the cable assembly that extends to the top of the welding foot 42 of the ground terminal, and welds the connecting foot 516 and the center conductor C1 of the cable to the welding feet of the ground terminal and the signal terminal respectively, thereby avoiding the technical problem in the prior art that the welding foot 42 of the ground terminal needs to extend backward and downward to make electrical contact with the metal insert 30, resulting in inconsistent connection positions between the signal terminal and the ground terminal and the terminal strip 45, which need to be broken separately; and the technical problem in the prior art that the connection between the ground terminal and the metal insert 30 and the connection between the signal terminal and the center conductor C1 need to be welded twice.

[0067] Key References Figure 1 , Figure 5 , Fig. 9 , Fig.10As shown, the metal insert 30 of the first embodiment extends forward to form a reinforcing arm portion 26 and a reinforcing structure at the front end portion formed on the butt end 21. The reinforcing structure covers the reinforcing bottom wall 33, the front, rear and side covering portions 342, 341, 35 on the outside of the side wall 26, which can effectively strengthen the strength of the reinforcing arm portion 26 to avoid damage during the plug-in process. The connecting strip 36 connecting the pair of front covering portions 342 protrudes forward to form a positioning protrusion 361 and positioning steps 362 formed on both sides of the positioning protrusion 361. The front end of the butt end 21 also protrudes forward to form a positioning protrusion 361 located at the The front protrusion 216 on the lower surface of the positioning protrusion 361, the positioning protrusion 361 is inserted into the positioning hole 121 of the shielding shell 10 forward, and the positioning step 362 is against the lateral sides of the positioning hole 121 to prevent shaking, which solves the technical problem that the prior art only relies on the front protrusion 216 of the docking end 21 for limiting, resulting in insufficient limiting strength of the front protrusion 216 of the plastic material; at the same time, the connecting strip 36 strengthens the strength of the front end of the docking end 21, realizes the precise positioning of the position between the insulating seat 20 and the shielding shell 10, and ensures the stability of the product.

[0068] Key References Figure 5 , Fig. 9 , Fig.16 As shown, the front covering portion 342 of the reinforcing structure is punched forward to form a convex bump 343 protruding into the external plug-in space S1. When the board-to-board plug of the present application is inserted into the docking socket, the convex bump 343 is held backward by the metal fixing part (not shown) of the socket, so that the conductive terminal 40 on the docking end 21 exposed in the internal plug-in space 215 can be more uniformly and tightly contacted with the conductive terminal (not shown) of the socket backward; at the same time, the reinforcing structure realizes friction through metal parts when the plug and the socket are plugged in, so as to avoid damage to the docking end of the insulating seat body 20, and the front, rear and side covering portions 342, 341, 25 of the reinforcing structure are directly bent downward from the reinforced bottom wall 33 to ensure bending accuracy, and an arc surface structure is formed at the bending position, and docking is first performed through the arc surface structure to avoid hard interference and damage to the reinforcing structure.

[0069] Key References Figure 6 , Fig.12As shown, the top of the insulating seat body 20 of the first embodiment of the present invention extends backward along the terminal groove 214 of the docking end 21 to form a first groove 241 and a second groove 242. The first groove 241 has first clamping blocks 243 on both sides of the lateral sides for spacing and limiting the retaining portion 41 of the conductive terminal 40. The front end of the second groove 242 is provided with a second clamping block 244 for spacing and limiting the welding foot 42 of the conductive terminal 40. The rear end of the second groove 242 is provided with a third clamping block 245 for spacing and limiting the center conductor C1 and the connecting foot 516. Such a design can improve the manufacturing yield of the product and improve the product quality by avoiding the swaying and misalignment of the conductive terminal 40 and limiting the center conductor C1 and the connecting foot 516.

[0070] Embodiment 2

[0071] See also Figure 21 to Figure 23 As shown, the difference between the second embodiment of the present application and the first embodiment is that: the conductive terminal 40 is only provided with a signal terminal during stamping, and the ground terminal is directly stamped and formed on the metal insert 30, and the welding piece 51 does not need to be provided with the connecting pin 516. In this embodiment, the conductive terminal 40, the metal insert 30 and the insulating seat 20 are integrally formed, and the conductive terminal 40 does not need to be injection molded into the insulating block 60 again. The metal insert 30 also includes a ground terminal 37 formed by bending upward and extending from the front end of the front plate 311 and then bending vertically and extending forward. The ground terminal 37 is connected to the front end of the front plate 311 as a whole through a vertical portion 371. The structure of the ground terminal 37 is consistent with that of the conductive terminal 40, and will not be repeated here. The ground terminal 37 is arranged at intervals from the conductive terminal 40, and the conductive terminals 40 are both signal terminals. The vertical portion 371 of the ground terminal 37 is integrally formed in the terminal block 24, and the welding foot of the conductive terminal 40 is located in the second groove 242.

[0072] In the second embodiment, the grounding terminal 37 is formed by bending and extending the front plate portion 311 of the metal insert 30. The conductive terminal 40 only needs to be stamped to form a signal terminal, and only the solder pins 42 of the signal terminal need to be exposed on the terminal block 24, thereby increasing the spacing between the solder pins 42 and reducing the difficulty of welding. The grounding terminal 37 is directly integrally formed on the metal insert 30, and the solder pins 42 of the signal terminal are on the same horizontal plane, so that the terminal strip can be bent once, reducing the manufacturing process.

[0073] Embodiment 3

[0074] See also Figure 24 to Figure 29As shown, the difference between this embodiment and the first embodiment is that the grounding terminal is replaced by the isolation component 70, the bottom surface 264 of the reinforcing arm portion 26 of the insulating seat body 20 is located on both sides of the protrusion 212 to form a protruding table 2641, and the bottom surface 264 is located on both sides of the inner plug-in space 215 to form a recessed table 2642, and the bottom surface of the recessed table 2642 is higher than the bottom surface of the protruding table 2641. The plate body 31 of the metal insert 30 is designed separately from the reinforcement structure. The reinforcement bottom wall 33 includes a first reinforcement bottom wall 331 covering the protruding table 2641 and a second reinforcement bottom wall 332 covering the recessed table 2642. The first reinforcement bottom wall 331 and the second reinforcement bottom wall 332 are connected as a whole through the side covering portion 35. The inner side of the second reinforcement bottom wall 332 is bent upward and extended to form a hook portion 333 buried in the reinforcement arm portion 26. The front covering portion 342 is formed by bending upward and extending from the front end of the first reinforcement bottom wall 331, and the rear covering portion 341 is formed by bending upward and extending from the rear end of the second reinforcement bottom wall 332. The bottom surface of the first reinforcement bottom wall 331 is flush with the bottom surface of the protruding portion 212, and the bottom surface of the second reinforcement bottom wall 332 is higher than the bottom surface of the first reinforcement bottom wall 332.

[0075] The isolation assembly 70 includes a connection portion 72 formed in the top wall of the protruding portion 212 of the docking end 21 and a plurality of isolation sheets 71 formed by bending downward and extending backward from the rear end of the connection portion 72. The connection portion 72 can increase the strength of the protruding portion 212, and the isolation sheet 71 includes a first isolation body 711 partially formed in the protruding portion 212 and separating the terminal slot 214 located at the position of the protruding portion 212, a second isolation body 712 extending backward from the first isolation body 711 and located in the top wall 211 of the docking end 21 in the inner plug-in space 215 or on the upper side of the inner plug-in space 215, a third isolation body 713 extending backward from the second isolation body 712 and formed in the terminal block 24, a notch 714 formed in the isolation sheet 71 located on the inner plug-in space 215, and a evacuation portion 715 opened on the upper side of the third isolation body 713. The isolating sheet 71 has a certain thickness in the vertical direction, and the vertical thickness of the isolating sheet 71 is greater than the depth of the inner plug-in space 215 and less than or equal to the thickness of the docking end 21. The avoidance portion 715 is used to shape the terminal block 24 so that the third isolating body 713 is not exposed on the upper surface of the terminal block 24, and the notch 714 is used to be plugged with the socket terminal (not shown) to increase the holding force. The isolating sheet 71 is formed by tearing and bending downward from the rear end of the connecting portion 72, and the connecting portion 72 is connected to a plurality of isolating sheets 71 as a whole by bending the connecting portion 722. The free end of the third isolating portion 713 exposes the rear end edge of the terminal block 24 to connect the material strip, and the front end of the connecting portion 72 is also connected to the material strip. A plurality of the conductive terminals 40 are respectively arranged between two adjacent isolating sheets 71 at intervals, and the interference between the conductive terminals 40 caused by high-frequency signals is reduced by the isolating sheets 71.

[0076] Key References Fig.24 , Fig.29 As shown, the reinforcing arm portion 26 of the docking end 21 of the insulating seat body 20 of the third embodiment forms a protruding table 2641 on both sides of the protruding portion 212 and a recessed table 2642 on both sides of the inner plug-in space 215. At the same time, the reinforced bottom wall of the reinforcing structure forms a first reinforced bottom wall 331 and a second reinforced bottom wall 332 in a stepped structure that are covered on the bottom surfaces of the protruding table 2641 and the recessed table 2642. The second reinforced bottom wall 332 and the recessed table 2642 can avoid the socket, so that the contact portion 435 suspended in the terminal slot 214 and located in the inner plug-in space 215 can be adjusted upward, making the product design more flexible and enabling the contact portion 435 of the conductive terminal 40 to better maintain contact force with the socket terminal (not shown).

[0077] Key References Fig.24 , Fig. 27 , Fig.28 As shown, in the third embodiment, the grounding terminal is replaced by an isolation component 70, and the isolation sheet 71 has a certain width in the vertical direction, so that compared with the setting of the grounding terminal, it can better shield the high-frequency signal interference between the conductive terminals 40, and significantly improve the frequency of the high-frequency waves carried by the conductive terminals 40; and the isolation sheet 71 is also provided with a notch 714 that is plugged into the socket terminal, which effectively avoids the loss of plugging and unplugging force due to the disappearance of the grounding terminal; and all the isolation sheets 71 are connected as a whole through the front end connection part 72, which not only strengthens the strength of the docking end 21 but also reduces the manufacturing difficulty.

[0078] The above is only an embodiment of the present application and is not intended to limit the present application. For those skilled in the art, the present application may have various changes and variations. 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

1. A board-to-board plug, comprising an insulating body integrally formed with a metal insert, a plurality of conductive terminals disposed in the insulating body, a cable assembly disposed at the rear end of the insulating body and electrically connected to the conductive terminals, and a shielding shell wrapped outside the insulating body, wherein the insulating body comprises a butt end vertically penetrated to form a terminal groove, characterized in that: The butt joint end includes a top wall, a protruding portion protruding downward from the front end of the top wall, an inner plug-in space opened on the lower surface of the butt joint end and located at the rear side of the protruding portion, a plurality of barriers separating a plurality of the terminal slots, and a reinforcing arm portion formed on both sides of the protruding portion and the inner plug-in space, the metal insert includes a reinforcing structure formed outside the reinforcing arm portion, the reinforcing structure includes a reinforcing bottom wall formed on the bottom surface of the reinforcing arm portion, a front covering portion bent upward from the front end of the reinforcing bottom wall and extending and formed on the front wall surface of the reinforcing arm portion, and the front covering portion is punched forward to form a convex bump; The shielding shell includes a cover plate covering the upper side of the insulating seat body, and the reinforcement structure also includes a rear covering portion bent upward from the rear end of the reinforcement bottom wall and covering the rear wall surface of the reinforcement arm portion, and a side covering portion bent upward from the outer side of the reinforcement bottom wall and covering the side wall surface of the reinforcement arm portion, the side covering portion extends upward to form a spot welding portion flush with the upper surface of the top wall, and the spot welding portion is fixed to the lower surface of the cover plate by spot welding.

2. The board-to-board plug according to claim 1, characterized in that: The shielding shell also includes a shielding front frame formed by bending downward and extending from the front end of the cover plate, and a shielding side frame formed by bending backward and extending from the lateral sides of the shielding front frame. An external plug-in space is formed between the protruding portion, the reinforcing arm portion, the shielding front frame and the shielding side frame, and the convex bump is exposed in the external plug-in space.

3. The board-to-board plug according to claim 2, characterized in that: The board-to-board plug is connected to the board-to-board socket, and the convex bump abuts against a metal piece of the board-to-board socket inserted into the external plug-in space.

4. The board-to-board plug according to claim 2, characterized in that: The reinforcement structure also includes a connecting strip connected to the top of the front covering portion, the connecting strip is formed at the front end of the protruding portion, the front end of the connecting strip protrudes to form a positioning convex portion with positioning steps on both lateral sides, a positioning hole is formed at the bend between the cover plate and the shielding front frame, the positioning convex portion is inserted into the positioning hole, and the positioning steps are abutted and limited against the lateral sides of the positioning hole.

5. The board-to-board plug according to claim 4, characterized in that: The protruding portion is formed with a front protrusion on the lower surface of the positioning protrusion of the connecting strip, and the front protrusion thickens the positioning protrusion in the vertical direction so as to be located in the positioning hole at the upper limit in the vertical direction.

6. The board-to-board plug according to claim 1, characterized in that: The side covering portion further includes an upper extension portion formed by bending upward and extending from the reinforced bottom wall and a recessed portion formed by bending inward from the upper extension portion into the reinforced arm portion, and the spot welding portion is formed by horizontally bending from the recessed portion.

7. The board-to-board plug according to claim 1, characterized in that: The insulating seat body also includes a terminal block extending rearward from the butt end and a pair of extension arms extending rearward from the lateral sides of the terminal block. The metal insert includes a rear plate portion formed in the pair of extension arms on the lateral sides, a front plate portion extending forward from the rear plate portion, and a clamping portion extending upward from the lateral sides of the rear plate portion and covering the outside of the extension arms. The reinforced bottom wall is formed by extending forward and outward from the lateral sides of the front end of the front plate portion. The metal insert includes a plate body portion provided with a front plate portion and a rear plate portion, and the reinforced bottom wall and the plate body portion are on the same horizontal plane.

8. The board-to-board plug according to claim 7, characterized in that: The upper surface of the terminal block is lower than the upper surface of the docking end, and the terminal groove penetrates the docking end in the vertical direction. The terminal groove extends backward from the upper side of the docking end to form a first groove located on the rear upper surface of the docking end and a second groove formed on the terminal block. The insulating seat body is provided with a filling groove between the first groove and the second groove. The conductive terminal includes a retaining portion limited in the first groove, a welding foot extending backward from the retaining portion and limited in the second groove, and an elastic contact arm extending forward from the retaining portion to the terminal groove. The rear end of the welding foot is connected to the terminal strip and then positioned in the terminal groove, the first and second grooves, and then injection molded to form an insulating block filled in the filling groove.

9. The board-to-board plug according to claim 8, characterized in that: The elastic contact arm includes a first elastic arm extending obliquely forward and downward, a second elastic arm extending from the front end of the first elastic arm by bending downward, a third elastic arm extending obliquely backward and upward from the end of the second elastic arm, a bent end portion bent forward and upward from the end of the third elastic arm, and a contact portion formed at the bending position between the third elastic arm and the bent end portion, the insulating block includes a protruding pressing portion extending toward the terminal slot and located above the first elastic arm, the front end of the protruding pressing portion is only located above the first elastic arm, and the contact portion is located in the inner plug-in space.

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