CN114498128A - Board-to-board plug and board-to-board connector assembly - Google Patents

Board-to-board plug and board-to-board connector assembly Download PDF

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Publication number
CN114498128A
CN114498128A CN202210277898.1A CN202210277898A CN114498128A CN 114498128 A CN114498128 A CN 114498128A CN 202210277898 A CN202210277898 A CN 202210277898A CN 114498128 A CN114498128 A CN 114498128A
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CN
China
Prior art keywords
plug
board
socket
guide
wall
Prior art date
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Granted
Application number
CN202210277898.1A
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Chinese (zh)
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CN114498128B (en
Inventor
李科
石义平
黎英岳
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Shenzhen Everwin Precision Technology Co Ltd
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Shenzhen Everwin Precision Technology Co Ltd
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Application filed by Shenzhen Everwin Precision Technology Co Ltd filed Critical Shenzhen Everwin Precision Technology Co Ltd
Priority to CN202210277898.1A priority Critical patent/CN114498128B/en
Publication of CN114498128A publication Critical patent/CN114498128A/en
Application granted granted Critical
Publication of CN114498128B publication Critical patent/CN114498128B/en
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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
    • H01R13/02—Contact members
    • H01R13/04—Pins or blades for co-operation with sockets
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R12/00—Structural associations of a plurality of mutually-insulated electrical connecting elements, specially adapted for printed circuits, e.g. printed circuit boards [PCB], flat or ribbon cables, or like generally planar structures, e.g. terminal strips, terminal blocks; Coupling devices specially adapted for printed circuits, flat or ribbon cables, or like generally planar structures; Terminals specially adapted for contact with, or insertion into, printed circuits, flat or ribbon cables, or like generally planar structures
    • H01R12/70—Coupling devices
    • H01R12/71—Coupling devices for rigid printing circuits or like structures
    • H01R12/712—Coupling devices for rigid printing circuits or like structures co-operating with the surface of the printed circuit or with a coupling device exclusively provided on the surface of the printed circuit
    • H01R12/716—Coupling device provided on the PCB
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
    • H01R13/40—Securing contact members in or to a base or case; Insulating of contact members
    • H01R13/405—Securing in non-demountable manner, e.g. moulding, riveting
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
    • H01R13/46—Bases; Cases
    • H01R13/533—Bases, cases made for use in extreme conditions, e.g. high temperature, radiation, vibration, corrosive environment, pressure
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R24/00—Two-part coupling devices, or either of their cooperating parts, characterised by their overall structure
    • H01R24/66—Two-part coupling devices, or either of their cooperating parts, characterised by their overall structure with pins, blades or analogous contacts and secured to apparatus or structure, e.g. to a wall
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R24/00—Two-part coupling devices, or either of their cooperating parts, characterised by their overall structure
    • H01R24/76—Two-part coupling devices, or either of their cooperating parts, characterised by their overall structure with sockets, clips or analogous contacts and secured to apparatus or structure, e.g. to a wall
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K7/00—Constructional details common to different types of electric apparatus
    • H05K7/20—Modifications to facilitate cooling, ventilating, or heating
    • H05K7/2039—Modifications to facilitate cooling, ventilating, or heating characterised by the heat transfer by conduction from the heat generating element to a dissipating body

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  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Coupling Device And Connection With Printed Circuit (AREA)

Abstract

A board-to-board plug comprises a plug body, a plurality of plug terminals and plug reinforcing parts, wherein the plug body comprises a top wall, a pair of plug side walls formed by downwards extending from the longitudinal two sides of the top wall, plug guide parts formed at the transverse two ends of the plug body and an island receiving cavity formed among the top wall, the pair of plug side walls and the plug guide parts, the plug terminals are integrally formed on the pair of plug side walls, the plug reinforcing parts are integrally formed on the plug guide parts, two independent plug reinforcing parts are arranged and formed on one plug guide part in the longitudinal direction, each plug reinforcing part comprises a welding leg longitudinally extending out of the plug body, each plug terminal comprises a contact part formed on the inner side and the outer side of the plug side wall and a plug terminal welding leg longitudinally extending out of the plug body, the solder legs of the plug reinforcement are oriented in the same direction as the solder legs of the plug terminal. The present application also includes a board-to-board connector assembly.

Description

Board-to-board plug and board-to-board connector assembly
Technical Field
The present application relates to the field of electrical connectors, and more particularly to a board-to-board plug and a board-to-board connector assembly.
Background
Board-to-board connector assemblies are widely used in the field of consumer electronics, such as smart phones, tablet computers, wearable devices, and the like. Present smart mobile phone and wearable equipment all require high to the space, the size of spare part is reducing equally, a ray of board has reached 0.6 mm's minimum height to the board of board producer after with the socket cooperation, the terminal interval has also reached 0.25 mm's distance, so small connector, higher requirement has been proposed to connector structural strength, and compare in traditional board to the board connector subassembly, the large-scale function integration of current smart mobile phone, propose higher requirement to electric current bearing capacity. The patent of the people's republic of china No. 202010176952.4 is a board to board connector assembly product of applying for research and development, through structural improvement, this product can adapt to current transmission ability more than 5A, and the socket can all satisfy 10A's current transmission with the plug accurately, but is bigger along with the current transmission between PCB mainboard and the battery, and current requirement proposes transmission current and reaches 15A, and the plug structure of the patent application of 202010176952.4 can't satisfy the transmission of so heavy current, need improve it.
Disclosure of Invention
Accordingly, there is a need for a board-to-board connector and a board-to-board connector assembly that can achieve one-step punch forming of the plug terminal and the plug reinforcement member, thereby reducing the cost.
In order to solve the above technical problem, the present application provides a board-to-board plug, which comprises a plug body, a plurality of plug terminals and a plug reinforcement member, wherein the plug body comprises a top wall, a pair of plug side walls formed by downwardly extending from the longitudinal two sides of the top wall, plug guide portions formed at the transverse two ends of the plug body, and an island receiving cavity formed between the top wall, the pair of plug side walls and the plug guide portions, the plug terminals are integrally formed on the pair of plug side walls, the plug reinforcement member is integrally formed on the plug guide portions, two independent plug reinforcement members are arranged and formed on one plug guide portion in the longitudinal direction, each plug reinforcement member comprises a welding leg longitudinally extending out of the plug body, the plug terminals comprise contact portions formed at the inner side and the outer side of the plug side walls and a plug terminal welding leg longitudinally extending out of the plug body, the welding leg of the plug reinforcing piece is consistent with the orientation of the welding leg of the plug terminal, and the plug reinforcing piece is formed by integrally stamping the plug terminal.
Preferably, the horizontal both ends of every group plug terminal all have the integrative stamping forming of a plug reinforcement, the plug terminal leg with the leg of plug reinforcement is connected on same material area.
Preferably, each of the header reinforcing members includes a covering bottom portion covering a part of the bottom surface of the header guiding portion, a transverse peripheral wall bent upward from the covering bottom portion in a transverse outer direction and covering a part of the transverse outer side surface of the header guiding portion, and a longitudinal peripheral wall bent upward from the covering bottom portion in a longitudinal outer direction and covering the longitudinal outer side surface of the header guiding portion, and the solder legs of the header reinforcing member are formed by being bent and extended from the top of the longitudinal peripheral wall in a longitudinal outer direction.
Preferably, the plug reinforcement further includes a reinforcement top portion formed by bending and extending upward from the lateral inner side of the cover bottom, the reinforcement top portion and the bending portion of the cover bottom form a guide inclined plane, and the reinforcement top portion includes a vertical arm formed by extending upward from the guide inclined plane and a horizontal arm formed by bending toward the lateral inner side from the top end of the vertical arm.
Preferably, a through hole is formed through the free end of the horizontal arm, the free end of the horizontal arm is exposed in the island receiving cavity of the plug body, and the through hole is filled with a plastic material.
Preferably, the pair of header reinforcing members on the same header guide portion are symmetrical along a transverse centerline, and the cover bottom portion, the transverse peripheral wall, and the reinforcing top portion of the two header reinforcing members are respectively combined.
Preferably, the plug terminal extends out of the top wall along the longitudinal direction on the upper surface of the top wall to form the plug terminal weld leg, the contact portion of the plug terminal comprises a first plug terminal contact portion which is bent from the plug terminal weld leg along the surface of the top wall to the inner side surface of the plug side wall and a second plug terminal contact portion which is bent from the lower end of the first plug terminal contact portion in the opposite direction and extends to the outer side surface of the plug side wall, and the weld leg of the plug reinforcement and the plug terminal weld leg face to the same direction and have coplanar top surfaces.
In order to solve the above technical problem, the present application further provides a board-to-board connector assembly, including a socket and the aforementioned plug, the socket includes a socket body, a socket terminal and a socket reinforcement, the socket body includes a bottom wall, socket sidewalls formed by upward protruding from the longitudinal ends of the bottom wall, a socket guide portion formed at the transverse ends of the socket body and an island portion formed by upward protruding from the bottom wall, the socket reinforcement covers outside the socket guide portion, a plug sidewall receiving cavity is formed between the socket sidewall and the island portion, when the plug is connected to the socket, the island portion of the socket body is buckled into the island receiving cavity of the plug, the plug sidewall is inserted into the plug sidewall receiving cavity, the plug terminal is electrically contacted with the socket terminal, and the plug reinforcement is electrically contacted with the socket reinforcement, the longitudinal peripheral wall of the header reinforcing member is electrically contacted with the socket reinforcing member as a contact portion.
Preferably, the socket guide includes a plug guide receiving cavity, a longitudinal peripheral wall located laterally outside the plug guide receiving cavity, and a pair of lateral peripheral walls located on both longitudinal sides of the plug guide receiving cavity, the socket reinforcing member comprises a main body portion covering the surface of the longitudinal peripheral wall, a top surface covering portion and a transverse peripheral wall covering portion extending from both longitudinal sides of the main body portion in the transverse direction and covering the top surface covering portion and the transverse peripheral wall covering portion of the transverse peripheral wall top surface and the outer side surface, and an elastic arm portion extending from the transverse peripheral wall covering portion to one side of the transverse peripheral wall close to the plug guide receiving cavity, the top surface covering part is bent downwards near the inner side of the transverse peripheral wall to form a guide part, and when viewed from top to bottom, the guide portion does not overlap the resilient arm portion, and a bottom of the guide portion is lower than a top of the resilient arm portion.
Preferably, the top cover portion is thinned at an inner edge on one side of the elastic arm portion to form a guiding inclined surface, and when the plug is not inserted into the socket, there is no overlapping between the guiding inclined surface and the elastic arm portion when viewed from top to bottom.
This application board is to the board plug through inciting somebody to action the plug reinforcement is cut apart into independent two in longitudinal direction, makes the plug reinforcement with plug terminal one-time stamping forming can greatly reduce manufacturing cost, reduces mould development cost. Simultaneously, strengthen the design at top can strengthen the intensity of plug guide to increase heat radiating area, do benefit to the transmission of heavy current.
Drawings
The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the application and together with the description serve to explain the application and not to limit the application.
FIG. 1 is an assembled view of a board-to-board connector assembly of the present application;
FIG. 2 is a cross-sectional view taken along line A-A of FIG. 1;
FIG. 3 is a perspective assembly view of the board-to-board socket of the present application;
fig. 4 is a perspective view of a socket body of the board-to-board socket of the present application and a partially enlarged view thereof;
FIG. 5 is a perspective view of a socket stiffener for a board-to-board socket of the present application;
FIG. 6 is a top view of the socket stiffener of the board-to-board socket of the present application;
FIG. 7 is a perspective view of another angle of the socket stiffener for the board-to-board socket of the present application;
FIG. 8 is a perspective assembly view of a first embodiment of the board-to-board plug of the present application;
FIG. 9 is a perspective assembly view of an alternate angle of the board-to-board plug embodiment of the present application;
figure 10 is a perspective view of the plug body of the first board-to-board plug embodiment of the present application;
fig. 11 is a perspective view of a header reinforcement member of the first board-to-board header embodiment of the present application;
figure 12 is a perspective view of an alternate angle of the header reinforcement of the first board-to-board header embodiment of the present application;
fig. 13 is a perspective assembly view of a second embodiment of the board-to-board plug of the present application;
FIG. 14 is a perspective assembly view of another angle of the board-to-board plug embodiment of the present application;
fig. 15 is a perspective view of a header reinforcement member of a second embodiment of the board-to-board header of the present application;
fig. 16 is a perspective assembly view of a third embodiment of the board-to-board plug of the present application;
figure 17 is a perspective assembly view of another angle of the plate-to-plate plug embodiment of the present application;
fig. 18 is a perspective view of a plug body of a third embodiment of the board-to-board plug of the present application;
fig. 19 is a perspective view of a header reinforcement member of a third embodiment of the plate-to-plate header of the present application;
fig. 20 is a perspective view of another angle of the header reinforcement of the third board-to-board header embodiment of the present application;
figure 21 is a perspective assembly view of a fourth embodiment of the board-to-board plug of the present application;
FIG. 22 is a perspective assembly view of four alternative angles of the plate-to-plate plug embodiment of the present application;
figure 23 is a perspective view of the plug body of the fourth plate-to-plate plug embodiment of the present application;
fig. 24 is a perspective view of a plug reinforcement and plug terminals of a fourth embodiment of the board-to-board plug of the present application;
fig. 25 is a perspective view of a header reinforcement member of the fourth embodiment of the board-to-board header of the present application.
Detailed Description
In order to make the objects, technical solutions and advantages of the present application more apparent, the technical solutions of the present application will be described in detail and completely with reference to the following specific embodiments of the present application and the accompanying drawings.
The direction of the present application defines the right direction (or lateral direction) with the X direction shown in fig. 1 as the left-right direction, the front direction (or longitudinal direction) with the Y direction as the front-back direction, and the upper direction (or vertical direction) with the Z direction as the up-down direction.
Referring to fig. 1, the board-to-board connector assembly of the present application includes a plug a attached to a printed circuit board and a socket B attached to another printed circuit board, wherein the plug a and the socket B are in buckled connection with each other.
The plug a comprises a plug body 10, a plurality of plug terminals 20 formed in the plug body 10, and plug reinforcing members 30 fixed to both ends of the plug body 10 in the transverse direction. The socket B includes a socket body 40, socket terminals 50 mounted on the socket body 40, and socket reinforcing members 60 mounted and fixed to both lateral ends of the socket body 40.
As shown in fig. 1 to 7, the socket body 40 of the socket B of the board-to-board connector assembly of the present application includes a bottom wall 41, a pair of socket sidewalls 42 extending upward from both longitudinal sides of the bottom wall 41, an island 45 protruding upward from the bottom wall 41 between the pair of socket sidewalls 42, socket guide portions 44 formed at both lateral ends of the socket body 40, and a plug sidewall receiving cavity 43 formed between the island 45 and the pair of socket sidewalls 42.
The bottom wall of the socket body 40 is provided with a plurality of terminal grooves 46 from bottom to top, the socket terminal 50 is assembled in the terminal grooves 46 upwards, the socket terminal 50 includes a support arm 51 extending in the terminal groove 46 at the bottom wall 41 and exposed at the bottom of the terminal groove 46, a socket terminal second contact portion 52 bent upwards from the longitudinal outer side of the support arm 51 and located on the longitudinal side of the island portion 45 and facing the socket side wall 42, a socket terminal first contact portion 53 bent upwards from the longitudinal inner side of the support arm 51 and located on the longitudinal side of the socket side wall 42, a holding portion 54 bent upwards from the top end of the first contact portion 53, and a solder foot 55 bent vertically from the bottom end of the holding portion 54 and extending towards the longitudinal outer side and located on the lower surface of the bottom wall 41 of the socket body 40.
As shown in fig. 4, protected portions 451 are provided at both lateral ends of the island portion 45 toward the socket guide portion 44, and each protected portion 451 includes a mesa portion 453 having a lower horizontal surface than the island portion 45, an escape slope 452 inclined obliquely downward from the mesa portion 453, a catching groove 454 recessed downward from the mesa portion 453, and a communicating groove 455 communicating with the escape slope 452 and opened laterally outward from the catching groove 454.
The receptacle guide 44 includes peripheral walls 441, 442 and a plug guide receiving cavity 443 located between the peripheral walls 441, 442. The peripheral wall comprises a longitudinal peripheral wall 441 and a pair of transverse peripheral walls 442 connected to either end of the longitudinal peripheral wall 441, the transverse peripheral walls 442 being connected to the receptacle side walls 42.
The plug guide receiving cavity 443 is formed with a through hole 4431 penetrating in the up-down direction corresponding to the lateral extension of the island 45, the through hole 4431 extending up to the lower end of the longitudinal outer peripheral wall 441. The longitudinal outer peripheral wall 441 is provided at laterally outer and inner sides thereof with first and second extension grooves 4411, 4412, respectively, and the second extension groove 4412 is communicated with the through hole 4431. The lateral peripheral wall 442 protrudes upward from the middle thereof to form a support shoulder 4421, and the support shoulder 4421 is provided at the outer periphery thereof with a mounting step 4425 located longitudinally outside the support shoulder 4421 and extending in the lateral direction, a communication step 4426 for blocking the support shoulder 4421 and the receptacle side wall 42, and an elastic escape 4424 located longitudinally inside the support shoulder 4421 and extending in the lateral direction, respectively. The mounting step portion 4425, the communicating step portion 4426 and the elastic escape portion 4424 communicate with each other to form a U-shaped step portion. The support shoulder 4421 includes a thin wall portion 4422 near the side of the longitudinal outer peripheral wall 441 and a thick wall portion 4423 formed to extend from the thin wall portion 4422 in the lateral direction toward the socket side wall 42. The top surface of the thick portion 4423 is lower than the top surface of the thin portion 4422, and the longitudinal width of the elastic avoiding portion 4424 at the thin portion 4422 is larger than the longitudinal width at the thick portion 4423, i.e., the thickness of the thin portion 4422 is smaller than the thickness of the thick portion 4423, thereby increasing the longitudinal width of the elastic avoiding portion 4424 at the thin portion 4422. The lateral peripheral wall 442 is provided with a step 49 on a side thereof adjacent to the longitudinal peripheral wall 441. The mounting stepped part 4425 partially penetratingly forms a third extending groove 4428 in a vertical direction.
As shown in fig. 5 to 7, the socket stiffener 60 includes a main body 61 covering the top surface of the longitudinal peripheral wall 441 in the longitudinal direction, a longitudinal peripheral wall covering portion 62 bent downward from the lateral outer end of the main body 61 and extending into the first extending groove 4411, a central guide portion 63 bent downward from the lateral inner side of the main body 61 and extending to the protected portion 451 at the lateral end of the island 45, top surface covering portions 66 extending from the longitudinal ends of the main body 61 to the top surface of the supporting shoulder 4421, a lateral peripheral wall covering portion 64 bent downward from the longitudinal outer side of the top surface covering portion 66 and extending to the mounting step portion 4425, and a resilient arm portion 65 bent backward from the free end of the lateral peripheral wall covering portion 64 and extending to the resilient escape portion 4424 through the communicating step portion 4426.
In another embodiment, the elastic arm portion 65 may also be bent back from the lateral outer side of the lateral peripheral wall covering portion 64 to extend to the elastic avoiding portion 4424.
The free end 642 of the longitudinal peripheral wall covering portion 62 is fixed as a solder tail to the printed circuit board, and the bottom end of the lateral peripheral wall covering portion 64 is fixed as a solder tail by soldering to the printed circuit board through the third extension groove 4428. The body portion 61 is folded down toward the plug guide receiving cavity 443 side at both longitudinal sides of the central guide 63 to form a slope guide 611.
The central guide portion 63 includes a first central guide arm 631 bent downward from the inside of the main body portion 61, the first central guide arm extending into the second extending groove 4412, a support base arm 632 bent downward from the bottom of the first central guide arm 631 and extending to the bottom of the protected portion 451 at both sides of the island portion 45 along the through hole 4431, a second central guide arm 634 extending upward from the support base arm 632 in an inclined manner to above the protected portion 451, and a locking end 635 bent downward from the free end of the second central guide arm 634 and locked into the locking groove 454. The first and second center guide arms 631, 634 are used to guide the insertion of the header reinforcement 30 and protect the longitudinal outer peripheral wall 441 of the socket body 40 and the protected portions 451 at both lateral ends of the island portion 45. The longitudinal outer side surface covering portion 35 and the longitudinal inner side surface covering portion 34 of the plug reinforcement 30 are guided by the first and second central guide arms 631, 634, respectively, and enter between the first and second central guide arms 631, 634 above the support base arm 632, but in the inserted state, the longitudinal outer side surface covering portion 35 and the longitudinal inner side surface covering portion 34 are not in electrical contact with the first and second central guide arms 631, 634. During the insertion process, the support base arm 632 is pressed and the mounted pcb generates a supporting force to make the first and second central guide arms 631 and 634 have a certain elasticity.
The top surface covering portion 66 includes a covering base portion 661, a guide portion 662 bent downward from the step portion 49 inside the covering base portion 661, and a guide slope 663 formed by thinning an inner edge of the covering base portion 661 at the elastic escape portion 4424. The top surface of the thick portion 4423 of the support shoulder 4421 is not covered by the top surface covering portion 66 and is exposed to the outside. The bottom of the guide portion 662 is located above the step portion 49.
The elastic arm portion 65 includes a straining portion 651 formed by being bent back from a free end in the lateral direction of the lateral peripheral wall covering portion 64, an elastic body arm 652 extending from the straining portion 651 over the elastic escaping portion 4424 in the lateral direction, and a contact protrusion 653 protruding from the elastic body arm 652 toward the plug guide receiving cavity 443. The tightening portion 651 extends over the mounting step portion 4425, the communication step portion 4426 and the elastic escape portion 4424, i.e., along the thick-walled portion 4423 of the support shoulder portion 4421, and the elastic body arm 652 extends to the position where the elastic escape portion 4424 is located at the thin-walled portion 4422. The elastic escape part 4424 has more deformation space in the longitudinal direction at the position of the thin wall part 4422, and the contact protrusion 653 extends at least partially into the plug guide receiving cavity 443. When the plug a is not inserted into the receptacle B, that is, the receptacle B is in a natural state, as viewed from the top (that is, as shown in fig. 11), the guide slope 663 of the top cover portion 66 does not cover the elastic body arm 652, and when the elastic arm portion 65 is pressed longitudinally outward by the contact portion 331 of the lateral outer side surface covering portion 33 of the plug reinforcing member 30, the elastic body arm 652 may be partially positioned below the guide slope 663.
In a natural state, the elastic arm body arm 652 is located on the side of the elastic escape portion 4424 facing the plug guide receiving cavity 443, and has a deformation gap with the inner side surface of the thin wall portion 4422, and when the contact protrusion 653 of the elastic arm portion 65 is longitudinally pressed, the elastic arm body arm 652 is deformed in the deformation gap.
Referring to fig. 8 to 25, four embodiments of the board-to-board plug a of the present application are illustrated, and the board-to-board plug a of the present application will be described in detail below according to the embodiments.
Example one
Please refer to fig. 2, 8 to 12, which are schematic views of a board-to-board plug a according to a first embodiment of the present invention.
The plug body 10 of the plug a comprises a top wall 11, a pair of plug side walls 12 formed by extending downwards from two longitudinal sides of the top wall 11, plug guide parts 14 formed at two transverse ends of the plug body 10, and island receiving cavities 13 formed between the top wall 11, the pair of plug side walls 12 and the plug guide parts 14.
The plug terminals 20 are integrally formed on a pair of plug side walls 12 in two rows in the lateral direction, and the plug guide portion 14 includes a bottom surface 141, a lateral outer side 142, a pair of longitudinal outer sides 143, and a slope 144 facing the island receiving cavity 13. An insertion groove 145 is formed extending along the bottom surface 141, the lateral outer side 142 and the top wall 11. The longitudinal outer side surface 143 extends to form a buried groove 146 communicating with the embedded groove 145 at the longitudinal outer side surface 142, and the lower end of the buried groove 146 extends to both longitudinal ends of the bottom surface 141. The insertion groove 145 extends in the lateral direction on the surface of the top wall 11, and then branches off to extend out of the top wall 11 along both longitudinal sides.
The header reinforcing member 30 includes a peripheral wall 31 surrounding the longitudinal outer side 142 and the lateral outer side 143 of the header guide 14, a cover bottom 32 formed by bending vertically from the bottom end of the peripheral wall 31, a cover top 33 formed by bending and extending vertically from the top of the peripheral wall 31 at one lateral end, and solder tails 332 formed by extending from the end of the cover top 33 along both longitudinal sides.
The peripheral wall 31 is of a U-shaped structure, and includes a transverse peripheral wall 311 covering the transverse outer side 142, and a longitudinal peripheral wall 312 bent perpendicularly from both longitudinal ends of the transverse peripheral wall 311 and covering the longitudinal outer side 143. The cover bottom 32 includes a pair of longitudinal cover bottoms 322 formed by bending the bottom portions of the longitudinal peripheral walls 312 perpendicularly and a transverse cover bottom 321 formed between the pair of longitudinal cover bottoms 322 by bending the bottom portions of the transverse peripheral walls 311 perpendicularly. The free end of the lateral cover bottom 321 is stamped downward to form a guide ramp 323. The cover top 33 is formed by bending and extending perpendicularly from the top end of the transverse peripheral wall 311, and includes an extension base 331, the solder leg 332 formed by extending from the free end of the extension base 331 along both longitudinal sides after diverging, and a diverging opening 333 formed at the free end of the extension base 331.
Viewed in the vertical direction, the free end 313 of the longitudinal peripheral wall 312 at least partially overlaps the solder tail 332, so that the length of the longitudinal peripheral wall 312 is extended to increase the heat dissipation function, and meanwhile, the bottom of the free end 313 is provided with an avoiding notch 314 to avoid interference between the two.
The header reinforcing member 30 and the header terminal 20 are integrally injection-molded with the header body 10, and the lateral cover bottom 321, the lateral peripheral wall 311, and the cover top 33 are inserted into the insertion groove 145 of the header guide portion 14. The longitudinal peripheral wall 312 and the longitudinal cover bottom 322 are embedded in the embedded groove 146. The top surface of the cover top 33 is exposed to the outside of the top wall 11 of the plug body 10. The longitudinal peripheral wall 312 contacts, as a contact portion, the contact projection 653 of the socket reinforcing member 60.
The plug terminal 20 includes a plug terminal leg 24 extending from the upper surface of the top wall 11 in the longitudinal direction to the outside of the top wall 11, a plug terminal first contact portion 22 bent from the plug terminal leg 24 along the surface of the top wall 11 to the inner side surface of the plug side wall 12, and a plug terminal second contact portion 23 bent from the lower end of the plug terminal first contact portion 22 in the opposite direction to extend to the outer side surface of the plug side wall 12. The second contact portion 23 of the plug terminal is provided with a groove structure. The free end of the plug terminal second contact portion 23 is bent toward the plug terminal first contact portion 22 to form an insertion end portion 25 to be inserted into the plug side wall 12. The insertion end portion 25 prevents the plug terminal second contact portion 23 from being separated from the outer side surface of the plug side wall 12.
When a header a is inserted into the socket B, the longitudinal peripheral wall 312 of the header reinforcing member 30 first contacts the guide parts 611, 662 and the guide slope 663 and is guided to be aligned with the header guide receiving cavity 433, and is pressed down, the contact protrusion 653 makes electrical contact with the contact part (longitudinal peripheral wall) 312 of the header reinforcing member 30 to transmit current, and the elastic body arm 652 is pressed toward the thin wall part 4422 to be deformed and provide elastic force. The header strength member 30 and the socket strength member 60 transmit electric current through the two contact portions 312 and the two contact protrusions 653 in the longitudinal direction, and the transmission load of the electric current can reach 15 amperes.
When the plug a is matched with the socket B, the island portion 45 is accommodated in the island portion receiving cavity 13 of the plug a, the plug side wall 12 of the plug a is accommodated in the plug side wall receiving cavity 43 of the socket B, and the plug guide portion 14 is guided into the socket guide portion 44. The plug terminal 20 is clamped between the first and second contact portions 53 and 52 of the socket terminal 50, and the first and second contact portions 22 and 23 of the plug terminal 20 are electrically contacted with the first and second contact portions 53 and 52 of the socket terminal 50, respectively.
In this embodiment, the transverse covering bottom 321 and the longitudinal covering bottom 322 are respectively formed by bending and extending, and a certain gap is formed between the two; in an embodiment, the transverse covering bottom 321 and the longitudinal covering bottom 322 may also be an integral structure, and are manufactured by a stretching process, so that the exposed surface of the plug reinforcing member 30 is further enlarged, the heat dissipation capability of the plug reinforcing member 30 is increased, and the current passing capability is improved.
When in an operating state, electric current is conducted from the contact protrusion 653 of the socket B to the longitudinal peripheral wall 312 of the header reinforcing member 30, and flows into the corresponding printed circuit board along the longitudinal peripheral wall 312, the lateral peripheral wall 311, the extension base 331, and the pair of solder tails 332.
The thickness of the plug reinforcement 30 is greater than the thickness of the plug terminal 20 so that the plug reinforcement 30 obtains a lower resistance.
Compared with the prior art, the application board has the advantages that the covering top part 33 of the plug reinforcing part 30 of the board-to-board plug A extends from the top part of the peripheral wall 31 to the top wall 11 in a bending mode, so that the area of the plug reinforcing part 30 is increased, the plug guide part 14 is tightly wrapped to increase the strength of the plug guide part 14, meanwhile, the surface area of the plug reinforcing part 30 is increased, and favorable conditions are created for heat dissipation problems possibly occurring in large-current transmission.
Example two
Please refer to fig. 2, 13 to 15, which are schematic views of a second embodiment of a board-to-board plug a according to the present application.
Compared with the first embodiment, the second embodiment is different in that: the joint between the extending base 331 of the plug reinforcement 30 covering the top 33 and the solder leg 332 is bent upward to form a bent portion 334, and the bent portion 334 makes the horizontal position of the solder leg 332 higher than the horizontal position of the extending base 331. Eventually, the extension base 331 is completely wrapped in the top wall 11, i.e., the extension base 331 is not exposed to the outside. The guiding inclined plane 323 is further bent inward to wrap the plug guide portion 14.
Meanwhile, the solder tails 332 of the plug reinforcement 30 of the first and second embodiments are in the same direction as the plug terminal solder tails 24 of the plug terminals 20, so that the tape connected to the solder tails 332 of the plug reinforcement 30 and the tape connected to the plug terminal solder tails 24 can be cut at the same time after injection molding. Namely, one process is performed to cut off the strip of the plug reinforcing member 30 and the plug terminal 20.
The second embodiment is similar to the first embodiment, and both the embodiments achieve that the strength of the top wall 11 is enhanced by extending the base 331, and at the same time, the heat dissipation area is increased.
EXAMPLE III
Please refer to fig. 16 to fig. 20, which are schematic views of a third embodiment of the board-to-board plug a according to the present application.
The plug body and the plug terminals of the board-to-board plug a in the third embodiment are the same as those in the first and second embodiments, and are not described herein again.
The main difference is that the plug reinforcing member 30 of the third embodiment includes a covering bottom portion 32 covering the bottom surface 141 of the plug guiding portion 14, a peripheral wall 31 bent downward from both longitudinal ends and lateral outer sides of the covering bottom portion 32 and covering the longitudinal outer side surface 143 and the lateral outer side surface 142, and a connecting portion 34 bent upward from the lateral inner side of the covering bottom portion 32.
The covering bottom 32 extends along the longitudinal direction to cover the bottom surface 141, and the peripheral wall 31 includes a longitudinal peripheral wall 312 bent upward from two longitudinal sides of the covering bottom 32 and covering the longitudinal outer side surface 143, and a transverse peripheral wall 311 bent upward from a transverse outer side of the covering bottom 32 and covering the transverse outer side surface 142. The lateral peripheral wall 311 is stamped and formed with a convex hull 313 projecting laterally outward on the surface thereof, and the longitudinal peripheral wall 312 serves as a contact portion for electrical transmission by electrical contact with the contact protrusion 653 of the receptacle terminal 60. While there is a gap between the longitudinal peripheral wall 312 and the transverse peripheral wall 311, in an embodiment, the longitudinal peripheral wall 312 and the transverse peripheral wall 311 may also be an integral seamless structure, and are formed by a stamping and drawing process, so that the strength of the header guide part 14 may be effectively enhanced, but the coupling force between the header guide part 14 and the header reinforcing member 30 may be reduced.
The connecting portion 34 is formed by bending and extending upward from the lateral inner side of the covering bottom portion 32, and a guide slope 323 is formed at the bent portion. The connecting portion 34 includes a vertical connecting portion 341 bent upward and extended from the covering bottom portion 32, a horizontal connecting portion 342 bent and extended from the top of the vertical connecting portion 341, and solder tails 343 extending from the horizontal connecting portion 342 along two longitudinal sides out of the plug body 10. A through hole 344 is formed through the horizontal connecting portion 342 to allow a plastic material to fill the through hole to increase the bonding force between the plug body 10 and the plug reinforcement member 30, and the upper surface of the horizontal connecting portion 342 is exposed out of the top wall 11 of the plug body 10 to facilitate heat dissipation. The width of the vertical connection portion 341 is not less than the width of the horizontal surface of the horizontal wall surface of the island receiving cavity 13 so that the width of the vertical connection portion 341 is as large as possible.
The plug reinforcement 30 has a thickness greater than that of the plug terminal 20. The solder tails 343 and the plug terminal solder tails 24 are located in the same direction, which facilitates cutting the strip of the plug terminal 20 and the plug reinforcement 30 at a time.
The plug reinforcement 30 of the present embodiment is formed by bending and extending the connection portion 34 upwards at the lateral inner side of the covering bottom portion 32, so that the connection portion 34 does not overlap with the covering bottom portion 32 in a projection manner in the vertical direction, thereby reducing the stamping difficulty, and simultaneously considering the wrapping area to increase the strength and the heat dissipation capability.
Example four
Please refer to fig. 2, 21 to 25, which are schematic views of a board-to-board plug a according to a fourth embodiment of the present invention. The fourth embodiment is different from the previous embodiments, and has greater similarity to the plug a in the background art document.
The plug body 10 and the plug terminal 20 of the plate-to-plate plug a in the fourth embodiment are the same as those of the third embodiment, and are not described herein again.
The plug reinforcement member 30 of the present embodiment is integrally formed on the plug guide portions 14 of the plug body 10, the plug reinforcement member 30 on each plug guide portion 14 includes a pair of plug reinforcement members 30a,30b arranged in the longitudinal direction, and the plug reinforcement members 30a,30b are two members independent of each other. The plug terminals 20 include two rows of plug terminals 20 arranged in the longitudinal direction. The two transverse ends of each row of plug terminals 20 correspond to the two plug reinforcements 30a or 30b respectively, and the plug terminals 20 and the plug reinforcements 30 are formed by stamping the same sheet of metal plate and are connected to the same material belt.
Each header reinforcing member 30a,30b includes a cover bottom 32, a peripheral wall 31 bent and extended downward from the lateral outer side and the longitudinal outer side of the cover bottom 32, a fillet 315 bent and extended from the bottom of the peripheral wall 31, and a reinforcing top 35 extended from the lateral inner side of the cover bottom 32 along the inclined surface 144.
The peripheral wall 31 includes a transverse peripheral wall 311 bent downward from the transverse outer side of the cover bottom 32 and wrapping the transverse outer side 142, and a longitudinal peripheral wall 312 extending downward from the longitudinal outer side of the cover bottom 32 and wrapping the longitudinal outer side 143. The cover bottom 32 covers the bottom surface 141. The width of the upper side of the transverse peripheral wall 311 is greater than that of the lower side, so that a gap is formed between the transverse peripheral wall 311 and the cover bottom 32, and the gap is filled with plastic to enhance the combining force between the transverse peripheral wall 311 and the plug guide portion 14. The longitudinal peripheral wall 312 extends downward to the level of the top wall 11 near the lateral peripheral wall 311, the top end of the longitudinal peripheral wall 312 near the plug terminal 20 is bent outward in the longitudinal direction to form the solder leg 315, and the solder leg 315 is level with the top surface of the plug terminal solder leg 24. The thickness of the plug terminal 20 corresponds to the thickness of the plug reinforcement 30.
The cover bottom 32 is formed with a guide slope 323 at the transverse inner side upward bending part, and the reinforcing top 35 is formed by bending and extending the transverse inner side of the cover bottom 32 upward and then horizontally bending. Specifically, the reinforcing top 35 includes a vertical arm 351 extending upward from the guiding slope 323 along the slope 144 and a horizontal arm 352 bent inward from the top end of the vertical arm 351 in the lateral direction, and a through hole 353 is formed through the free end of the horizontal arm 352. The free ends of the horizontal arms 352 are exposed within the island receiving cavity 13 of the plug body 10. The through holes 353 are filled with the plastic material to enhance the coupling force.
The board of this embodiment is through inciting somebody to action plug reinforcement 30 is cut apart into two independent in longitudinal direction, makes plug reinforcement 30 with plug terminal 20 one shot stamping forming, can greatly reduce manufacturing cost, reduction mould development cost. Meanwhile, the design of the reinforcing top portion 35 can enhance the strength of the plug guide portion 14, increase the heat dissipation area, and facilitate the transmission of large current.
The above description is only an example of the present application and is not intended to limit the present application. Various modifications and changes may occur to those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application should be included in the scope of the claims of the present application.

Claims (10)

1. A board-to-board plug comprises a plug body, a plurality of plug terminals and plug reinforcing parts, wherein the plug body comprises a top wall, a pair of plug side walls formed by downwards extending from the longitudinal two sides of the top wall, plug guide parts formed at the transverse two ends of the plug body and an island receiving cavity formed among the top wall, the pair of plug side walls and the plug guide parts, the plug terminals are integrally formed on the pair of plug side walls, the plug reinforcing parts are integrally formed on the plug guide parts, the board-to-board plug is characterized in that the two independent plug reinforcing parts are arranged and formed on one plug guide part in the longitudinal direction, each plug reinforcing part comprises a welding pin longitudinally extending out of the plug body, each plug terminal comprises a contact part formed at the inner side and the outer side of the plug side wall and a plug terminal welding pin longitudinally extending out of the plug body, the welding leg of the plug reinforcing piece is consistent with the orientation of the welding leg of the plug terminal, and the plug reinforcing piece is formed by integrally stamping the plug terminal.
2. The board-to-board plug of claim 1, wherein each set of plug terminals has a plug reinforcement member integrally stamped at each lateral end thereof, and the plug terminal solder tails are connected to the same strip as the plug reinforcement member solder tails.
3. The board-to-board plug of claim 2, wherein each of said plug reinforcing members includes a covering bottom portion covering a part of the bottom surface of said plug guide portion, a laterally outer peripheral wall bent upward laterally outward from said covering bottom portion and covering a part of the laterally outer side surface of said plug guide portion, and a longitudinally outer peripheral wall bent upward longitudinally outward from said covering bottom portion and covering the longitudinally outer side surface of said plug guide portion, and said solder tails of said plug reinforcing members are formed by extending from the top of said longitudinally outer peripheral wall in a manner bent longitudinally outward.
4. The board-to-board plug of claim 3, wherein the plug reinforcement further comprises a reinforcement top portion bent and extended upward from the lateral inside of the cover bottom portion, the reinforcement top portion and the bent portion of the cover bottom portion form a guide slope, and the reinforcement top portion comprises a vertical arm extended upward from the guide slope and a horizontal arm bent and extended inward from the top end of the vertical arm toward the lateral inside.
5. The board-to-board plug of claim 4, wherein the free end of the horizontal arm has a through hole formed therethrough, the free end of the horizontal arm being exposed within the island receiving cavity of the plug body, the through hole being filled with a plastic material.
6. The board-to-board plug of claim 5, wherein said pair of plug reinforcing members on said same plug guide portion are symmetrical along a transverse centerline, and a cover bottom portion, a transverse peripheral wall and a reinforcing top portion of two said plug reinforcing members are combined, respectively.
7. The board-to-board plug of claim 3, wherein said plug terminal extends in a longitudinal direction from said top wall to said top wall at said top wall top surface to form said plug terminal solder tail, said plug terminal contact portion includes a first plug terminal contact portion bent from said plug terminal solder tail along said top wall surface to said inner side of said plug side wall and a second plug terminal contact portion bent in a reverse direction from a lower end of said first plug terminal contact portion to said outer side of said plug side wall, said plug reinforcement solder tail faces in a same direction as said plug terminal solder tail and has a coplanar top surface.
8. A board-to-board connector assembly comprising a socket and the plug of claim 2, wherein the socket comprises a socket body, socket terminals and a socket reinforcing member, the socket body comprises a bottom wall, socket side walls formed to protrude upward from both longitudinal ends of the bottom wall, socket guide portions formed at both lateral ends of the socket body, and island portions formed to protrude upward from the bottom wall, the socket reinforcing member covers the outside of the socket guide portions, a plug side wall receiving cavity is formed between the socket side walls and the island portions, the island portions of the socket body are engaged with the island portion receiving cavity of the plug when the plug is mated with the socket, the plug side walls are inserted into the plug side wall receiving cavities, the plug terminals are in electrical contact with the socket terminals, and the plug reinforcing member is in electrical contact with the socket reinforcing member, the longitudinal peripheral wall of the header reinforcing member is electrically contacted with the socket reinforcing member as a contact portion.
9. The board-to-board connector assembly according to claim 8, wherein the socket guide includes a plug guide receiving cavity, a longitudinal peripheral wall located laterally outside the plug guide receiving cavity, and a pair of lateral peripheral walls located on both longitudinal sides of the plug guide receiving cavity, the socket stiffener includes a main body portion covering a surface of the longitudinal peripheral wall, a top surface covering portion and a lateral peripheral wall covering portion extending from both longitudinal sides of the main body portion in a lateral direction to cover top and outer lateral surfaces of the lateral peripheral wall, and a resilient arm portion extending from the lateral peripheral wall covering portion to a side of the lateral peripheral wall close to the plug guide receiving cavity, the top surface covering portion being bent downward close to an inner side of the lateral peripheral wall to form a guide portion, the guide portion being non-overlapping with the resilient arm portion as viewed from above, the bottom of the guide portion is lower than the top of the resilient arm portion.
10. The board-to-board socket according to claim 9, wherein the top surface covering portion is thinned at an inner edge on a side of the resilient arm portion to form a guide slope, and when a plug is not inserted into the socket, there is no overlap with the resilient arm portion as viewed from above.
CN202210277898.1A 2022-03-21 2022-03-21 Board-to-board plug and board-to-board connector assembly Active CN114498128B (en)

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CN116544687B (en) * 2023-07-05 2024-04-16 荣耀终端有限公司 Plug-in structure of board-to-board connector, board-to-board connector and electronic equipment

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