CN111146637A

CN111146637A - Board-to-board plug

Info

Publication number: CN111146637A
Application number: CN202010056771.8A
Authority: CN
Inventors: 张自财; 徐志辉
Original assignee: Kunshan Leijiang Communication Technology Co ltd
Current assignee: Kunshan Leijiang Communication Technology Co ltd
Priority date: 2020-01-17
Filing date: 2020-01-17
Publication date: 2020-05-12

Abstract

A board-to-board plug comprises an insulating base body integrally formed with a metal insert, a plurality of conductive terminals arranged in the insulating base body, a cable assembly arranged at the rear end of the insulating base body and electrically connected with the conductive terminals, and a shielding shell coated outside the insulating base body, the insulating base body comprises a butt joint end which is vertically penetrated and formed with a terminal groove, the butt joint end comprises a top wall, a convex part which is formed by downwards protruding from the front end of the top wall and an inner inserting connection space which is arranged on the lower surface of the butt joint end and is positioned at the rear side of the convex part, the metal insert comprises a reinforcing structure formed outside the reinforcing arm, the reinforcing structure comprises a reinforcing bottom wall formed on the bottom surface of the reinforcing arm, and a front cladding part which is bent upwards from the front end of the reinforcing bottom wall and formed on the front wall surface of the reinforcing arm in an extending mode, and the front cladding part is punched forwards to form a convex hull. This application board can realize that plug and socket contact is more stable to the board plug.

Description

Board-to-board plug

Technical Field

The present application relates to the field of radio frequency connectors, and more particularly, to a board-to-board plug.

Background

A PCB of an existing mobile phone generally has a radio frequency connector connected to a coaxial cable to transmit radio frequency signals, such as antenna signals and high frequency signals between different boards; in the 5G communication era, multi-antenna transmission is required, and the traditional single-channel radio frequency connector cannot meet the requirement; in the existing alternatives, a technical solution for implementing multi-channel transmission of antenna signals by using a board-to-board connector appears. The patent No. 201910206829 to X of the people's republic of china discloses a cable connector device for transmitting multi-channel antenna signals through coaxial line combination, which comprises an insulating body, conductive terminals and metal sheets integrally formed in the insulating body, a shielding shell and a cable assembly.

Disclosure of Invention

In view of the above, it is desirable to provide a board-to-board plug that can urge the insulative housing rearward so that the contact portions on the insulative housing more reliably come into close contact with the receptacle terminals.

In order to solve the technical problem, the application provides a board-to-board plug, which comprises an insulating base body, a plurality of conductive terminals, a cable assembly and a shielding shell, wherein the insulating base body is integrally formed with a metal insert, the conductive terminals are arranged in the insulating base body, the rear end of the insulating base body is electrically connected with the conductive terminals, the cable assembly is coated outside the insulating base body, the insulating base body comprises a butt joint end, a terminal table and a pair of extension arms, the butt joint end is vertically penetrated through and formed with a terminal groove, the terminal table is formed by extending from the butt joint end backwards, the pair of extension arms are formed by extending from the transverse two sides of the terminal table backwards, the butt joint end comprises a top wall, a protruding part formed by downwards protruding from the front end of the top wall, an inner inserting space, a plurality of partition rails and reinforcing arm parts, the partition rails are arranged on the lower surface of the butt, the metal insert comprises a reinforcing structure formed outside the reinforcing arm, the reinforcing structure comprises a reinforcing bottom wall formed on the bottom surface of the reinforcing arm, and a front cladding part which is bent upwards from the front end of the reinforcing bottom wall and formed on the front wall surface of the reinforcing arm in an extending mode, and the front cladding part is punched forwards to form a convex hull.

Preferably, the shielding housing includes a cover plate covering the upper side of the insulating base, a shielding front frame formed by bending and extending downward from the front end of the cover plate, and a shielding side frame formed by bending and extending rearward from two lateral sides of the shielding front frame, an outer plug-in space is formed between the protruding portion and the reinforcing arm portion, and the shielding front frame and the shielding side frame, and the protruding enclosure is exposed in the outer plug-in space.

Preferably, the board-to-board plug is butted with the board-to-board socket, and the convex hull is butted against a metal piece of the board-to-board socket inserted into the outer plugging space.

Preferably, the reinforcing structure further includes a rear cladding portion bent upward from a rear end of the reinforcing bottom wall and covering a rear wall surface of the reinforcing arm portion, and a side cladding portion bent upward from an outer side of the reinforcing bottom wall and covering a side wall surface of the reinforcing arm portion, the side cladding portion extends upward to form a spot welding portion flush with an upper surface of the top wall, and the spot welding portion is fixed to a lower surface of the cover plate by spot welding.

Preferably, the reinforcing structure further comprises a connecting strip connected with the top of the front cladding part, the connecting strip is formed at the front end of the protruding part, the front end of the connecting strip protrudes to form a positioning convex part with positioning steps formed on the two transverse sides, the bending part of the cover plate and the shielding front frame is provided with a positioning hole, the positioning convex part is inserted into the positioning hole, and the positioning steps and the two transverse sides of the positioning hole are abutted and limited.

Preferably, the protruding part is formed with a front convex part on the lower surface of the positioning convex part of the connecting strip, and the front convex part is thickened in the vertical direction to enable the positioning convex part to be limited in the vertical direction in the positioning hole.

Preferably, the side cladding portion further includes an upward extending portion formed by bending and extending upward from the reinforcement bottom wall, and an inward recessed portion formed by bending inward from the upward extending portion and formed in the reinforcement arm portion, and the spot welding portion is formed by horizontally bending from the inward recessed portion.

Preferably, the metal insert includes a rear plate portion having lateral sides formed in the pair of extension arms, a front plate portion formed by forward extending from the rear plate portion, and a clamping portion formed by upward bending and extending from lateral sides of the rear plate portion and covering the extension arms, the reinforcing bottom wall is formed by forward extending from lateral sides of a front end of the front plate portion, and the reinforcing bottom wall and the plate body portion are located on the same horizontal plane.

Preferably, the upper surface of the terminal block is lower than the upper surface of the butt joint end, the terminal groove penetrates through the butt joint end in the vertical direction, the terminal groove extends backwards from the upper side of the butt joint end to form a first groove located on the rear upper surface of the butt joint end and a second groove formed on the terminal block, a filling groove is formed between the first groove and the second groove of the insulating base, the conductive terminal comprises a holding part limited in the first groove, a solder leg formed by extending backwards from the holding part and limited in the second groove and an elastic contact arm extending forwards from the holding part to the terminal groove, the rear end of the solder leg is connected with a terminal material belt and then is located in the terminal groove, the first groove and the second groove, and then an insulating block filled in the filling groove is formed by injection molding.

Preferably, the elastic contact arm includes a first elastic arm extending obliquely forward and downward, a second elastic arm extending downward from a front end of the first elastic arm, a third elastic arm extending obliquely rearward and upward from a rear end of the second elastic arm, a bent end portion formed by bending forward and upward from a rear end of the third elastic arm, and a contact portion formed at a bent position of the third elastic arm and the bent end portion, the insulating block includes a protruding pressing portion extending toward the terminal groove direction and located above the first elastic arm, a front end of the protruding pressing portion is located only above the first elastic arm, and the contact portion is located in the internal insertion space.

When the application board inserts the butted socket to the board plug, the convex hull is supported backwards by the metal fixing piece of the socket, so that the contact part of the conductive terminal on the butted end exposed in the inner inserting space can be backwards contacted with the conductive terminal of the socket more consistently and tightly; simultaneously, additional strengthening realizes that plug and socket rub through metal parts when inserting to avoid damaging the butt joint end of insulating pedestal, just additional strengthening's preceding, back, side cladding portion certainly strengthen the diapire and directly bend downwards, can guarantee the precision of bending, and the department of bending is formed with cambered surface structure, docks earlier through cambered surface structure, avoids hard interfering to damage additional strengthening.

Drawings

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

example one

FIG. 1 is a perspective assembly view of a one-board-to-one-board plug according to an embodiment;

FIG. 2 is a perspective assembly view of an alternate angle of a one-plate-to-one-plate plug according to an embodiment;

FIG. 3 is an exploded perspective view of a one-board-to-one-board plug according to an embodiment;

FIG. 4 is a perspective view of a metal insert of a one-board-to-one-board plug of an embodiment;

FIG. 5 is a perspective view of another angle of the metal insert of the one-plate-to-one-plate plug of the embodiment;

fig. 6 is a perspective view and a partial enlarged view of an insulation housing of a one-board-to-one-board plug according to an embodiment;

fig. 7 is a perspective view of an alternate angle of the insulative housing of the one-board-to-one plug of the embodiment;

FIG. 8 is a perspective view of the metal insert and the insulative housing of the one-board-to-one-board plug of the embodiment;

FIG. 9 is a perspective view of another angle between the metal insert and the insulative housing of the one-board-to-one board plug of the embodiment;

figure 10 is a perspective view of the shield housing of the one-board-to-one-board plug of the embodiment;

FIG. 11 is a perspective view of the conductive terminals of the one-board-to-board plug of the embodiment;

fig. 12 is a perspective view and a partial enlarged view of the conductive terminal connecting material strap of the one-board-to-board plug of the embodiment formed on the insulating base by the insulating block;

fig. 13 is a perspective view of fig. 12 with the conductive terminal strip removed;

FIG. 14 is a cross-sectional view taken along the line D-D of FIG. 13;

FIG. 15 is a cross-sectional view taken along line A-A of FIG. 1;

FIG. 16 is a cross-sectional view taken along line B-B of FIG. 1;

FIG. 17 is a sectional view and a partial enlarged view taken along the line C-C of FIG. 1;

FIG. 18 is a perspective view of a cable mount of the one-board-to-one plug of the embodiment;

FIG. 19 is a perspective view of the metal frame of the cable mount of the one-board-to-one-board plug of the embodiment;

fig. 20 is a perspective view of a metal frame and a ground terminal of a one-board-to-one-board plug according to an embodiment of the present invention in an electrically connected state.

Example two

Fig. 21 is a perspective assembly view of a two-plate-to-two-plate plug of an embodiment with the shield shell removed;

FIG. 22 is a diagram illustrating the position of the metal insert and the conductive terminals of the two-board-to-board plug according to the embodiment;

figure 23 is a perspective view of a metal insert of a two-plate-to-two-plate plug of an embodiment.

EXAMPLE III

FIG. 24 is a perspective view of a metal insert, an isolation assembly and conductive terminals of a three-plate-to-plate plug of an embodiment integrally formed in an insulative housing;

figure 25 is a perspective view of an insulative housing of a three-plate to plate plug of an embodiment;

FIG. 26 is a perspective view of another angle at which the metal insert, the isolation assembly, and the conductive terminals of the three-plate-to-plate plug of the embodiment are integrally formed in the insulative housing;

FIG. 27 is a perspective view of an isolation assembly of an embodiment three-plate to plate plug;

FIG. 28 is a diagram of the positioning of the conductive terminals and the isolating assemblies of an embodiment of a three-plate-to-plate plug;

figure 29 is a perspective view of a portion of a metal insert of an embodiment three-plate to plate plug.

Description of the main Components

A shielding shell-10; a cover plate-11; briquetting-111; a shield front frame-12; positioning hole-121; a shielding side frame-13; a side frame body-131; an inner fold-132; a tail frame-133; chamfer face-134; an outer wrap portion-14; a front bag portion-141; a rear bag portion-42; bending the coating part-143; an insulating base body-20; butt-joint end-21; a top wall-211; a projection-212; barrier-213; terminal slot-214; inner slot-215; a front convex part-216; an extension arm-22; a limiting notch-223; filling the groove-23; a terminal block-24; an interior recess-249; a first groove-241; a second groove-242; a first clamp block-243; a second clamping block-244; a third clamping block-245; a thickened portion-25; a reinforcing arm portion-26; front wall-261; rear wall-262; side wall surface-263; a bottom surface-264; a protruding mesa-2641; recessed mesa-2642; a metal insert-30; a plate body portion-31; a front plate portion-311; a rear plate portion-312; a clamping portion-32; a vertical wall-321; bending the top-322; arc edge-323; a reinforced bottom wall-33; a first reinforced bottom wall-331; a second reinforced bottom wall-332; rear cladding-341; a front cladding 342; convex hull-343; side cladding-35; an upper extension portion 351; invaginated portion-352; spot weld-353; a connecting strip-36; a positioning protrusion-361; positioning step-362; a conductive terminal-40; a holding portion-41; a solder tail-42; a resilient contact arm-43; a first resilient arm-431; a second resilient arm-432; a third resilient arm-433; bent end-434; a contact portion-435; a countersink-44; a cable holder-50; a soldering lug-51; pad body-511; stamping a bump-512; a cable limiting groove-513; upward bending portion-515; a connecting pin-516; conductive paste or solder-52; an insulating block-60; a convex pressing portion-61; a cable-C; center conductor-C1; inner insulating layer-C2; knit-C3; outer insulating layer-C4; -an isolation component-70; a separator-71; a first isolation body-711; a second isolated body-712; a third isolation body-713; gap-714; an avoidance portion-715; a connecting portion-72; connecting body-721; bending the connecting part-722; external plug space-S1; clamping space-S3.

Detailed Description

In order to make the objects, technical solutions and advantages of the present application more apparent, the technical solutions of the present application will be described in detail and completely with reference to the following specific embodiments of the present application and the accompanying drawings. It should be apparent that the described embodiments are only some of the embodiments of the present application, and not all of the embodiments.

The definition of the direction in the present application is based on fig. 1, and the X direction is the front of the front-back direction (longitudinal direction), the Y direction is the right of the left-right direction (lateral direction), and the Z direction is the upper of the up-down direction (vertical direction).

Example one

Fig. 1 to 20 are drawings of the first embodiment, and show the product structure of the first embodiment in detail.

Referring to fig. 1 to 3, a board-to-board plug according to the present invention includes an insulating housing 20, a metal insert 30 formed in the insulating housing 20, a terminal module assembled in the insulating housing 20, a cable assembly, and a shielding shell 10 covering the insulating housing 20.

Referring to fig. 4 and 5, the metal insert 30 includes a plate body 31 having a front plate portion 311 and a rear plate portion 312, a clamping portion 32 formed by bending and extending upward from two lateral sides of the rear plate portion 312, and a reinforcing structure formed by extending forward from two lateral sides of the front plate portion 311. The clamping portion 32 includes a vertical wall 321 formed by bending upward from two lateral sides of the rear plate portion 312 and extending vertically, a bent top 322 formed by bending inward from a top end of the vertical wall 321, and an arc edge 323 formed at a joint of the vertical wall 321 and the bent top 322. The reinforcing structure includes a reinforcing bottom wall 33 extending from both lateral sides of the front plate portion 311 to the front outer side, a rear covering portion 341 extending from the rear side of the reinforcing bottom wall 33 to be bent upward, a front covering portion 342 extending from the front side of the reinforcing bottom wall 33 to be bent upward, a side covering portion 35 extending from the lateral outer side of the reinforcing bottom wall 33 to be bent upward, and a connecting strip 36 connecting the tops of the pair of front covering portions 342. The front cladding portion 342 is formed with a convex hull 343 by forward stamping, and the side cladding portion 35 includes an upward extending portion 351 bent and extended upward, an inward recessed portion 352 bent and extended inward from the upward extending portion 351, and a spot welding portion 353 bent and extended outward horizontally from the top end of the inward recessed portion 352. The connecting strip 36 includes a positioning protrusion 361 formed to protrude forward and positioning steps 362 formed at both lateral sides of the positioning protrusion 361.

As shown in fig. 6 to 9, the insulation base 20 includes a mating terminal 21, a terminal block 24 extending from the mating terminal 21, and a pair of extension arms 22 extending from two lateral sides of the terminal block 24. The mating terminal 21 includes a top wall 211, a protrusion 212 formed by extending downward from the front end of the top wall 211, a terminal slot 214 formed through the top wall 211 and the protrusion 212, a plurality of partitions 213 separating the terminal slot 214, and an inner plug space 215 opened on the bottom surface of the rear side of the protrusion 212. And concave parts 249 formed by inward concave of the two lateral sides of the terminal block 24. Two reinforcing arm portions 26 are formed on both lateral sides of the terminal groove 214, and the reinforcing arm portions 26 include front and rear wall surfaces 261 and 262, respectively, on the front and rear sides, and outer wall surfaces 263 and bottom surfaces 264 on the lateral outer sides. The projection 212 and the inner insertion space 215 are located between the pair of reinforcing arm portions 26. The bottom rear side of the partition 213 is recessed upward as a part of the inner plug space 215.

A terminal block 24 is formed at the top of the insulating base 20 at the rear side of the mating terminal 21, and a filling groove 23 is formed between the terminal block 24 and the mating terminal 21. The top of the terminal groove 214 extends backwards to form a first groove 241 and a second groove 242 at the front end and the rear end of the filling groove 23, the first groove 241 is located at the rear side of the top of the docking end 21, and the second groove 242 is located on the terminal block 24. The first groove 241 is provided with first clamping blocks 243 at two lateral sides, and the second groove 242 is provided with a second clamping block 244 and a third clamping block 245 at two lateral sides of the front end and the rear end respectively.

The metal insert 30 and the insulating base 20 are integrally injection-molded, the two lateral sides of the plate portion 31 are molded in the extension arm 22 and the terminal block 24, and the bottom of the front plate portion 311 is covered by the insulating base 20 and is formed with a thickened portion 25 covering the bottom of the front plate portion 311. The holding portion 32 is formed on the pair of extension arms 22, and the vertical wall 321 and the bent top 322 of the holding portion 32 are respectively covered on the lateral outer side and the top of the extension arm 22. The space between the pair of extension arms 22 of the plate body 31 forms 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 26 of the butt end 21, the front cladding portion 342 is cladded outside the front wall surface 261 of the side wall 26, the rear cladding portion 341 is cladded outside the rear wall surface 262, the side cladding portion 35 is cladded on the side wall surface 263, and the reinforcing bottom wall 33 is cladded on the bottom surface 264 of the side wall 26. The extending portion 351 of the side wrapping portion 35 is wrapped around 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 mating end 21 and is fixed to the shield case 10 by spot welding.

As shown in fig. 11 to 13 and 15, the terminal module includes a plurality of conductive terminals 40 and an insulating block 60 for fixing the conductive terminals 40 in the insulating base 20. The conductive terminals 40 include a plurality of signal terminals and ground terminals arranged at intervals. Each conductive terminal 40 includes a holding portion 41 retained in the first groove 241, a solder leg 42 extending from the holding portion 41 in a rear direction and retained in the second groove 242, and a resilient contact arm 43 extending from the holding portion 41 in a front direction and located in the terminal slot 214. The elastic contact arm 43 is suspended in the terminal groove 214, and the elastic contact arm 43 includes a first elastic arm 431 extending obliquely forward and downward, a second elastic arm 432 bent and extending downward from a front end of the first elastic arm 431, a third elastic arm 433 extending obliquely rearward and upward from a distal end of the second elastic arm 432, a bent end portion 434 bent forward and upward from a distal end of the third elastic arm 433, and a contact portion 435 formed at a bent position where the third elastic arm 433 and the bent end portion 434 are bent. The rear end of the fixing part 41 extends obliquely downwards to form a sinking part 44, and the welding leg 42 is formed by bending the rear end of the book sinking part 44 and then extending horizontally. The sinking portion 44 is suspended in the filling groove 23 and is filled and fixed by the insulating block 60, and the insulating block 60 fills the filling groove 23 to fix the conductive terminal 40 on the insulating base 20. The first clamping blocks 243 on two lateral sides of the first groove 241 limit the holding portion 41, and the second clamping blocks 244 on two lateral sides of the second groove 242 limit the solder tail 42.

All conductive terminals 40 are connected with terminal material belt 45 through the rear end of leg 42, terminal material belt 45 with the upper surface of leg 42 junction is equipped with pre-broken groove 46, and the conductive terminal 40 of this embodiment is connected through terminal material belt 45 and is inserted as whole and arranged in terminal groove 214 with in first, the

second recess

241, 242, later, carries out injection moulding or hot melt forming once more the collets 60 makes collets 60 fill full fill pack groove 23 and fix conductive terminal 40. After the insulating block 60 is molded, the terminal material tape 45 is broken upward. The insulating block 60 further includes a protruding pressing portion 61 protruding and extending toward the terminal groove 214 and located above the first elastic arm 431, and a front end of the protruding pressing portion 61 does not contact the partition 213.

As shown in fig. 11, the shielding housing 10 includes a cover plate 11 covering the top of the insulating base 20 and above the insulating block 60, a shielding front frame 12 formed by bending and extending the front end of the cover plate 11 downward, a shielding side frame 13 formed by bending and extending the shielding front frame 12 backward, and an outer enclosure 14 formed by bending and extending the two lateral outer sides of the cover plate 11 downward and surrounding the shielding side frame 13. The joint of the cover plate 11 and the shielding front frame 12 is provided with a positioning hole 121, and the shielding side frame 13 includes a side frame body 131 formed by bending the shielding front frame 12 backward, an inward-folded portion 132 formed by bending the side frame body 131 inward and abutting against two sides of the terminal block 24, and a tail frame 133 formed by extending the inward-folded portion 132 backward. The outer covering portion 14 includes a front covering portion 141 surrounding the outer peripheries of the side frame 131 and the inner folding portion 132, a rear covering portion 142 formed by bending and extending downward from the cover plate 11 at both lateral sides of the rear frame 133, and a bent covering portion 143 formed by bending inward from the bottom of the rear covering portion 142. An outer insertion space S1 is formed between the shield front frame 12 and the side frame 131 and the mating end 21. The spot-welded portion 353 of the side cladding portion 35 of the reinforcing structure is flush with the surface of the top wall 211 of the docking end 21 and is attached to the cover plate 11, and the cover plate 11 is electrically contacted with or fixed to the spot-welded portion 353 by spot welding.

As shown in fig. 14 to 20, the cable assembly includes a plurality of cables C and a cable bracket 50 for fixing the cables C together, where the cables C are coaxial cables, and each cable C includes a central conductor C1, an inner insulating layer C2 covering the central conductor C1, a braid layer C3 covering the outer periphery of the inner insulating layer C2, and an outer insulating layer C4 covering the braid layer C3. The cable holder 50 includes a soldering tab 51 attached to and fixed to the upper surface of the rear plate 312, and a conductive adhesive or solder 52 for fixing the braid C3 of the plurality of cables C to the soldering tab 51. The tab 51 includes a tab main body 511 spot-welded to the rear plate portion 312, an upward bent portion 515 bent and extended upward from a front end of the tab main body 511, and a connection leg 516 bent and extended forward and vertically from the upward bent portion 515. The soldering lug main body 511 comprises a plurality of stamping protrusions 512 formed by stamping upwards from the soldering lug main body 511, and cable limiting grooves 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 respectively connected to the solder 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 soldered to the solder pins 42 by a soldering process, and the third clamping block 245 limits the interval between the connecting pins 516 and the central conductor C1.

The cable assembly is assembled above the rear plate portion 312 in the holding space S3 between the pair of extension arms 22, and the soldering lug 51 is fixed to the rear plate portion 312 by spot welding.

As shown in fig. 17, during assembly, the bending covering portion 143 of the shielding shell 10 is not bent, the insulating base 20, the conductive terminal 40 thereon, and the metal insert 30 are firstly 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, and the arc edge 323 and the chamfered surface 134 can be easily buckled, so as to prevent the tail frame 133 or the extension arm 22 from being damaged due to the overlapping in the vertical direction.

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, and the top of the inner side of the tail frame 133 of the shielding shell 10 is provided with an inclined chamfered surface 134 for guiding the arc edge 323, so that the vertical wall 321 of the metal insert 30 is easily inserted between a pair of the tail frames 133, and the tail frames 133 and/or the vertical wall 321 and the second extension arm 22 in the vertical wall 321 are prevented from being damaged by inserting in the vertical overlapping direction.

Referring to fig. 19 and 20, in the first embodiment, the connecting leg 516 extending to the upper side of the leg 42 of the ground terminal is disposed on the soldering lug 51 of the cable assembly, and the connecting leg 516 and the central conductor C1 of the cable are respectively soldered to the legs of the ground terminal and the signal terminal, so as to avoid the technical problem that in the prior art, the leg 42 of the ground terminal needs to extend backward and downward to be electrically contacted with the metal insert 30, so that the connecting positions of the signal terminal, the ground terminal and the terminal material strip 45 are inconsistent and need to be respectively broken; and the technical problem that the connection of the grounding terminal and the metal insert 30 and the connection of the signal terminal and the central conductor C1 need to be welded twice in the prior art.

As shown in fig. 1, 5, 9 and 10, the metal insert 30 of the first embodiment extends forward to form the reinforcing arm 26 formed on the abutting end 21 and the reinforcing structure at the front end, the reinforcing structure covers the reinforcing bottom wall 33, the front, rear and side covering portions 342, 341 and 35 at the outer side of the side wall 26 to effectively reinforce the strength of the reinforcing arm 26 and avoid damage during the inserting process, the connecting strip 36 connecting a pair of the front covering portions 342 is formed with a positioning protrusion 361 and positioning steps 362 formed at two sides of the positioning protrusion 361, the front end of the abutting end 21 is further formed with a front protrusion 216 protruding forward and located at the lower surface of the positioning protrusion 361, the positioning protrusion 361 is clamped into the positioning hole 121 of the shielding housing 10 forward, and the positioning steps 362 are supported at two lateral sides of the positioning hole 121 to prevent shaking, the technical problem that the limiting strength of the front convex part 216 made of plastic materials is insufficient due to the fact that the front convex part 216 of the butt joint end 21 is limited in the prior art is solved; meanwhile, the strength of the front end of the butt joint end 21 is enhanced by the connecting strip 36, so that the precise positioning of the position between the insulating base 20 and the shielding shell 10 is realized, and the stability of the product is ensured.

Referring to fig. 5, 9 and 16, a convex hull 343 protruding from the outer plugging space S1 is formed by forward stamping on the front cladding 342 of the reinforcing structure, and when the board-to-board plug of the present application is inserted into the mated receptacle, the convex hull 343 is supported by a metal fixing member (not shown) of the receptacle, so that the contact portion 435, which exposes the conductive terminal 40 on the mating end 21 in the inner plugging space 215, can be more uniformly and tightly contacted with the conductive terminal (not shown) of the receptacle rearward; simultaneously, the additional strengthening realizes that plug and socket rub through metal parts when inserting to avoid damaging the butt joint end of insulating pedestal 20, just additional strengthening's preceding, back,

side cladding portion

342, 341, 25 certainly strengthen diapire 33 and directly bend downwards, can guarantee the precision of bending, and the department of bending is formed with the cambered surface structure, docks earlier through the cambered surface structure, avoids hard interfering to damage the additional strengthening.

Referring to fig. 6 and 12, in the first embodiment, a first groove 241 and a second groove 242 are formed by extending the top of the insulating base 20 backward along the terminal groove 214 of the mating terminal 21, first clamping blocks 243 for spacing the holding portion 41 of the conductive terminal 40 at intervals are disposed at two lateral sides of the first groove 241, a second clamping block 244 for spacing the solder leg 42 of the conductive terminal 40 at a larger interval is disposed at the front end of the second groove 242, and a third clamping block 245 for spacing the center conductor C1 and the connecting leg 516 is disposed at the rear end of the second groove 242.

Example two

Referring to fig. 21 to 23, a difference between the first embodiment and the second embodiment of the present application is: the conductive terminal 40 is only provided with a signal terminal during stamping, and a grounding terminal is directly integrally stamped and formed on the metal insert 30, so that the soldering lug 51 is not required to be provided with the connecting pin 516. In this embodiment, the conductive terminal 40, the metal insert 30 and the insulating base 20 are integrally formed, and the insulating block 60 does not need to be injection molded again on the conductive terminal 40. The metal insert 30 further includes a grounding terminal 37 formed by bending and extending the front end of the front plate 311 upwards, then bending and extending the front end vertically, and the grounding terminal 37 and the front end of the front plate 311 are connected into a whole through a vertical portion 371. The structure of the ground terminal 37 is identical to that of the conductive terminal 40, and the description thereof is omitted. The ground terminal 37 and the conductive terminal 40 are disposed at an interval, and the conductive terminals 40 are all signal terminals. The vertical portion 371 of the ground terminal 37 is integrally formed in the terminal block 24, and the solder tails of the conductive terminals 40 are located in the second groove 242.

In the second embodiment, the front plate portion 311 of the metal insert 30 is bent and extended to form the ground terminal 37, the conductive terminal 40 only needs to be stamped to form a signal terminal, and only the solder feet 42 of the signal terminal need to be exposed on the terminal block 24, so that the distance between the solder feet 42 is increased, and the welding difficulty is reduced; and the grounding terminal 37 is directly and integrally formed on the metal insert 30, and the welding feet 42 of the signal terminal are positioned on the same horizontal plane, so that the terminal material belt can be bent at one time, and the manufacturing process is reduced.

EXAMPLE III

Referring to fig. 24 to fig. 29, the difference between the first embodiment and the second embodiment is: replacing the ground terminal with the isolation component 70, the bottom surface 264 of the reinforcing arm 26 of the insulation base 20 is located at both lateral sides of the protruding portion 212 to form protruding mesas 2641, and the bottom surface 264 is located at both lateral sides of the inner plugging space 215 to form recessed mesas 2642, and the bottom surface of the recessed mesas 2642 is higher than the bottom surface of the protruding mesas 2641. The plate body portion 31 of the metal insert 30 and the reinforcing structure are designed separately, the reinforcing bottom wall 33 includes a first reinforcing bottom wall 331 covering the protruding table 2641 and a second reinforcing bottom wall 332 covering the recessed table 2642, the first reinforcing bottom wall 331 and the second reinforcing bottom wall 332 are connected into a whole through the side covering portion 35, the inner side of the second reinforcing bottom wall 332 is bent upward and extends to form a hook portion 333 embedded in the reinforcing arm portion 26, the front covering portion 342 is bent upward and extends from the front end of the first reinforcing bottom wall 331, and the rear covering portion 341 is bent upward and extends from the rear end of the second reinforcing bottom wall 332. The bottom surface of the first reinforcing bottom wall 331 is flush with the bottom surface of the projecting portion 212, and the bottom surface of the second reinforcing bottom wall 332 is higher than the bottom surface of the first reinforcing bottom wall 332.

The isolation assembly 70 includes a connecting portion 72 formed in the top wall of the protruding portion 212 of the mating end 21 and a plurality of isolation sheets 71 bent downward from the rear end of the connecting portion 72 and extending rearward. The connecting 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 groove 214 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 inner insertion space 215 or in the top wall 211 of the mating terminal 21 at the upper side of the inner insertion 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 on the isolation sheet 71 and located in the inner insertion space 215, and a relief 715 opened at the upper side of the third isolation body 713. The spacer 71 has a thickness in a vertical direction, and the vertical thickness of the spacer 71 is greater than the depth of the inner insertion space 215 and less than or equal to the thickness of the mating end 21. The relief 715 is used to mold the terminal block 24 so that the third isolation body 713 is not exposed on the upper surface of the terminal block 24, and the notch 714 is used to mate with a socket terminal (not shown) to increase the holding force. The isolation sheets 71 are formed by tearing one piece from the rear end of the connection part 72 and bending the isolation sheet downwards, the connection part 72 is connected with the isolation sheets 71 into a whole through the bending connection part 722, the free end of the third isolation part 713 is exposed out of the rear end edge of the terminal block 24 to be connected with a material belt, and the front end of the connection part 72 is also connected with the material belt. The conductive terminals 40 are respectively arranged between two adjacent spacers 71 at intervals, and the interference of high-frequency signals between the conductive terminals 40 is reduced through the spacers 71.

As shown in fig. 24 and 29, the reinforcing arm 26 of the butt end 21 of the insulation base 20 of the third embodiment forms a protruding mesa 2641 on two lateral sides of the protruding portion 212 and a recessed mesa 2642 on two lateral sides of the inner insertion space 215, and the reinforcing bottom wall of the reinforcing structure forms a first reinforcing bottom wall 331 and a second reinforcing bottom wall 332 in a step structure covering the bottom surfaces of the protruding mesa 2641 and the recessed mesa 2642, respectively, and the second reinforcing bottom wall 332 and the recessed mesa 2642 can be free from the socket, so that the contact portion 435 suspended in the terminal slot 214 and located in the inner insertion space 215 can be adjusted upward, the product design is more flexible, and the contact portion 435 of the conductive terminal 40 can better maintain a contact force with a socket terminal (not shown).

Referring to fig. 24, 27 and 28, in the third embodiment, the isolation component 70 replaces the ground terminal, and the isolation sheet 71 has a certain width in the vertical direction, so that compared with the arrangement of the ground terminal, the isolation sheet can better shield the interference of the high-frequency signals between the conductive terminals 40, and significantly improve the frequency of the high-frequency waves carried by the conductive terminals 40; the isolating piece 71 is also provided with a gap 714 which is inserted into the socket terminal, so that the insertion and extraction force loss caused by the disappearance of the grounding terminal is effectively avoided; and all the spacers 71 are connected into a whole through the connecting part 72 at the front end, which not only enhances the strength of the butt joint end 21, but also reduces the manufacturing difficulty.

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

Claims

1. A board-to-board plug comprises an insulating base body, a plurality of conductive terminals, a cable assembly and a shielding shell, wherein the insulating base body is integrally formed with a metal insert, the conductive terminals are arranged in the insulating base body, the cable assembly is arranged at the rear end of the insulating base body and is electrically connected with the conductive terminals, the shielding shell covers the insulating base body, the insulating base body comprises a butt joint end which is vertically penetrated and formed with a terminal groove, the butt joint end comprises a top wall, a protruding portion, an inner inserting connection space, a plurality of partition bars and reinforcing arms, the protruding portion is formed by downward protrusion of the front end of the top wall, the inner inserting connection space is arranged on the lower surface of the butt joint end and is located on the rear side of the protruding portion, the terminal grooves are separated, the reinforcing arms are formed on the protruding portion and the two transverse sides of the inner inserting connection space, the metal insert comprises a reinforcing structure, And the front cladding part is bent upwards from the front end of the reinforced bottom wall and extends to be formed on the front wall surface of the reinforced arm part, and the front cladding part is forwards stamped to form a convex hull.

2. The board-to-board plug of claim 1, wherein the shield shell comprises a cover plate covering the upper side of the insulative housing, a shield front frame bent downward from the front end of the cover plate and extending, and a shield side frame bent backward from two lateral sides of the shield front frame, wherein an outer plug-in space is formed between the protrusion and the reinforcing arm, and the shield front frame and the shield side frame, and the protrusion is exposed in the outer plug-in space.

3. The board-to-board plug of claim 2, wherein the board-to-board plug mates with a board-to-board socket, the male protrusion abutting against a metal piece of the board-to-board socket inserted into the outer plug-in space.

4. The board-to-board plug according to claim 2, wherein the reinforcing structure further comprises a rear covering portion bent upward from a rear end of the reinforcing bottom wall and covering a rear wall surface of the reinforcing arm, and a side covering portion bent upward from an outer side of the reinforcing bottom wall and covering a side wall surface of the reinforcing arm, the side covering portion extending upward to form a spot-welded portion flush with an upper surface of the top wall, the spot-welded portion being spot-welded to a lower surface of the cover plate.

5. The board-to-board plug according to claim 2 or 4, wherein the reinforcing structure further comprises a connecting strip connected to the top of the front cladding 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 protrusion with positioning steps formed on two lateral sides, a positioning hole is formed at the bending position of the cover board and the shielding front frame, the positioning protrusion is inserted into the positioning hole, and the positioning steps are abutted against two lateral sides of the positioning hole for limiting.

6. The board-to-board plug of claim 5, wherein said protrusion has a front protrusion formed on a lower surface of said positioning protrusion of said connecting strip, said front protrusion thickening said positioning protrusion in a vertical direction to be confined within said positioning hole in the vertical direction.

7. The board-to-board plug of claim 4, wherein the side cladding portion further comprises an upwardly extending portion bent and extended upwardly from the bottom reinforcing wall and an inwardly recessed portion bent and formed in the arm reinforcing portion inwardly from the upwardly extending portion, and the spot welded portion is formed by horizontally bending the inwardly recessed portion.

8. The board-to-board plug of claim 1, wherein the insulative housing further comprises a terminal block extending rearward from the mating end and a pair of extension arms extending rearward from lateral sides of the terminal block, the metal insert comprises a rear plate portion formed in the pair of extension arms at lateral sides, a front plate portion extending forward from the rear plate portion, and a clamping portion formed by bending upward from the lateral sides of the rear plate portion and covering the extension arms, the reinforcing bottom wall is formed by extending forward from the lateral sides of the front plate portion, and the reinforcing bottom wall and the board body portion are located on the same horizontal plane.

9. The board-to-board plug of claim 8, wherein an upper surface of said terminal block is lower than an upper surface of said mating end, the terminal groove penetrates through the butt joint end in the vertical direction, a first groove located on the rear upper surface of the butt joint end and a second groove formed on the terminal table are formed by extending backwards from the upper side of the butt joint end in the terminal groove, the insulating base body is provided with a filling groove between the first groove and the second groove, the conductive terminal comprises a holding part limited in the first groove, a welding leg formed by extending backwards from the holding part and limited in the second groove and an elastic contact arm extending forwards from the holding part to the terminal groove, and the rear ends of the welding legs are connected with terminal material belts and then positioned in the terminal groove, the first groove and the second groove, and then injection molding is carried out to form an insulating block filled in the filling groove.

10. The board-to-board plug of claim 9, wherein the resilient contact arm includes a first resilient arm extending obliquely forward and downward, a second resilient arm extending by being bent downward from a front end of the first resilient arm, a third resilient arm extending obliquely rearward and upward from a rear end of the second resilient arm, a bent end portion formed by being bent forward and upward from a rear end of the third resilient arm, and a contact portion formed at a bent position of the third resilient arm and the bent end portion, the insulating block includes a protruding pressed portion extending toward the terminal groove and located above the first resilient arm, a front end of the protruding pressed portion is located only above the first resilient arm, and the contact portion is located in the inner insertion space.