CN114498128B - 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
CN114498128B
CN114498128B CN202210277898.1A CN202210277898A CN114498128B CN 114498128 B CN114498128 B CN 114498128B CN 202210277898 A CN202210277898 A CN 202210277898A CN 114498128 B CN114498128 B CN 114498128B
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CN
China
Prior art keywords
plug
board
guide
socket
longitudinal
Prior art date
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Active
Application number
CN202210277898.1A
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Chinese (zh)
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CN114498128A (en
Inventor
李科
石义平
黎英岳
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Shenzhen Everwin Precision Technology Co Ltd
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Shenzhen Everwin Precision Technology Co Ltd
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Priority to CN202210277898.1A priority Critical patent/CN114498128B/en
Publication of CN114498128A publication Critical patent/CN114498128A/en
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Publication of CN114498128B publication Critical patent/CN114498128B/en
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Classifications

    • 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

The utility model provides a board-to-board plug, includes plug body, a plurality of plug terminal and plug reinforcement, the plug body include the roof, from the vertical both sides downwardly extending of roof forms a pair of plug lateral wall, form in the plug guide at the horizontal both ends of plug body and form in the island portion receiving chamber between roof, a pair of plug lateral wall and the plug guide, plug terminal integrated into one piece is in a pair of on the plug lateral wall, plug reinforcement integrated into one piece in the plug guide, two independent plug reinforcement arrange the shaping in a plug guide in the longitudinal direction, every the plug reinforcement all includes along vertically extending the outer leg of plug body, plug terminal includes form in the contact portion of the inside and outside both sides of plug lateral wall and along vertically extending the outer plug terminal leg of plug body, the leg of plug reinforcement with plug terminal leg orientation is unanimous. The 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 consumer electronics applications such as smartphones, tablet computers, wearable devices, etc. The space requirements of the current smart phone and the wearable equipment are extremely high, the sizes of components are also reduced, the lowest height of a wire board to board plug and socket of a wire board to board manufacturer after being matched is extremely low, the distance between terminals is 0.25mm, the connector is tiny, high requirements are provided for the structural strength of the connector, and compared with the traditional board to board connector assembly, the current smart phone is integrated in large-scale functions, and high requirements are provided for the current bearing capacity. The patent number 202010176952.4 of the people's republic of China is a board-to-board connector component product which is applied and developed, through structural improvement, the product can adapt to the current transmission capacity to more than 5A, and precisely, a socket and a plug can meet the current transmission of 10A, but as the current transmission between a PCB main board and a battery is larger, the current transmission requirement is that the transmission current reaches 15A, and the plug structure of the 202010176952.4 patent application can not meet the transmission of such large current, and needs to be improved.
Disclosure of Invention
In view of the foregoing, it is desirable to provide a board-to-board plug and a board-to-board connector assembly that achieves one-time stamping of the plug terminals and the plug reinforcements, and that reduces costs.
In order to solve the technical problems, the application provides a board-to-board plug, which comprises a plug body, a plurality of plug terminals and plug reinforcements, wherein the plug body comprises a top wall, a pair of plug side walls formed by extending downwards from two longitudinal sides of the top wall, plug guide parts formed at two transverse ends of the plug body and island part receiving cavities 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 reinforcements are integrally formed on the plug guide parts, two independent plug reinforcements are arranged and formed on one plug guide part in the longitudinal direction, each plug reinforcement comprises a welding leg extending out of the plug body along the longitudinal direction, the plug terminals comprise contact parts formed at two inner sides and outer sides of the plug side walls and plug terminal welding legs extending out of the plug body along the longitudinal direction, the welding legs of the plug reinforcements are consistent with the welding legs of the plug terminals, and the plug reinforcements are integrally stamped with the plug terminals.
Preferably, each set of plug terminals has a plug reinforcement integrally formed at each lateral end thereof, and the plug terminal legs and the leg of the plug reinforcement are connected to the same tape.
Preferably, each of the plug reinforcements includes a cover bottom portion covering a part of a bottom surface of the plug guide portion, a lateral peripheral wall bent upward from a lateral outer side of the cover bottom portion and covering a part of a lateral outer side of the plug guide portion, and a longitudinal peripheral wall bent upward from a longitudinal outer side of the cover bottom portion and covering a longitudinal outer side of the plug guide portion, and the fillets of the plug reinforcements are formed by extending from a top portion of the longitudinal peripheral wall along the longitudinal outer side.
Preferably, the plug reinforcement further comprises a reinforcement top formed by bending and extending upwards from the transverse inner side of the covering bottom, a guide inclined surface is formed at the bending position of the reinforcement top and the covering bottom, and the reinforcement top comprises a vertical arm formed by extending upwards from the guide inclined surface and a horizontal arm formed by bending and bending towards the transverse 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 plastic material.
Preferably, a pair of plug reinforcements on the same plug guide are symmetrical along a transverse midline, and the covering bottom, the transverse peripheral wall and the reinforcing top of two of the plug reinforcements are combined respectively.
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 welding leg, the contact portion of the plug terminal comprises a plug terminal first contact portion bent from the plug terminal welding leg to the inner side surface of the plug side wall along the surface of the top wall and a plug terminal second contact portion bent reversely from the lower end of the plug terminal first contact portion and extending on the outer side surface of the plug side wall, and the welding leg of the plug reinforcement piece faces the same direction with the plug terminal welding leg and is coplanar with the top surface.
In order to solve the above technical problems, the present application further provides a board-to-board connector assembly, including a socket and the plug, where the socket includes a socket body, a socket terminal, and a socket stiffener, the socket body includes a bottom wall, socket side walls protruding upward from two longitudinal ends of the bottom wall, socket guide portions formed at two lateral ends of the socket body, and island portions protruding upward from the bottom wall, the socket stiffener covers the socket guide portions, a plug side wall receiving cavity is formed between the socket side walls and the island portions, and when the plug is mated with the socket, the island portions of the socket body are snapped into the plug island portion receiving cavity, the plug side walls are inserted into the plug side wall receiving cavity, the plug terminal is in electrical contact with the socket terminal, the plug stiffener is in electrical contact with the socket stiffener, and a longitudinal peripheral wall of the plug stiffener is in electrical contact with the socket stiffener as a contact portion.
Preferably, the socket guide portion includes a plug guide portion receiving cavity, a longitudinal peripheral wall located at a lateral outer side of the plug guide portion receiving cavity, and a pair of lateral peripheral walls located at both sides of the plug guide portion receiving cavity in a longitudinal direction, the socket reinforcement includes a main body portion covered on a surface of the longitudinal peripheral wall, a top face covering portion and a lateral peripheral wall covering portion extending in a lateral direction from both sides of the main body portion in a longitudinal direction and covering top faces and outer side faces of the lateral peripheral walls, and an elastic arm portion extending from the lateral peripheral wall covering portion to a side of the lateral peripheral wall near the plug guide portion receiving cavity, the top face covering portion is bent downward near an inner side of the lateral peripheral wall to form a guide portion, the guide portion and the elastic arm portion do not overlap, and a bottom of the guide portion is lower than a top of the elastic arm portion as viewed from top down.
Preferably, the top surface covering portion is thinned at an inner edge on one side of the elastic arm portion to form a guide slope, and when the plug is not inserted into the socket, there is no overlap between the guide slope and the elastic arm portion when viewed from the top down.
According to the board-to-board plug, the plug reinforcement is divided into two independent parts in the longitudinal direction, so that the plug reinforcement and the plug terminal are formed by one-step stamping, the production cost can be greatly reduced, and the development cost of a die is reduced. Meanwhile, the strength of the plug guide part can be enhanced by the design of the reinforced top, and the heat dissipation area is increased, so that the high-current transmission is facilitated.
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 specification, illustrate embodiments of the application and together with the description serve to explain the application and do not constitute a limitation on the application.
FIG. 1 is a combination diagram of a board-to-board connector assembly of the present application;
FIG. 2 is a cross-sectional view taken along the line A-A of FIG. 1;
FIG. 3 is a perspective view of a board-to-board receptacle according to the present application;
Fig. 4 is a perspective view and a partial enlarged view of a socket body of the board-to-board socket of the present application;
FIG. 5 is a perspective view of a socket stiffener of the board-to-board socket of the present application;
FIG. 6 is a top view of a socket stiffener of the board-to-board socket of the present application;
FIG. 7 is another perspective view of the socket stiffener of the board-to-board socket of the present application;
Fig. 8 is a perspective view of a first embodiment of a board-to-board plug according to the present application;
FIG. 9 is a perspective view of another angle of the board-to-board plug embodiment of the present application;
fig. 10 is a perspective view of a plug body of a first embodiment of a board-to-board plug according to the present application;
FIG. 11 is a perspective view of a plug reinforcement member of a first embodiment of the board-to-board plug of the present application;
FIG. 12 is another perspective view of a plug reinforcement member of a first embodiment of the board-to-board plug of the present application;
fig. 13 is a perspective view of a second embodiment of a board-to-board plug according to the present application;
fig. 14 is a perspective view of another angle of a board-to-board plug embodiment of the present application;
fig. 15 is a perspective view of a plug reinforcement member of a second embodiment of the board-to-board plug of the present application;
fig. 16 is a perspective view of a third embodiment of a board-to-board plug according to the present application;
FIG. 17 is a perspective view of another three-angle combination of an embodiment of a board-to-board plug according to the present application;
Fig. 18 is a perspective view of a plug body of a third embodiment of a board-to-board plug of the present application;
fig. 19 is a perspective view of a plug reinforcement member of a third embodiment of the board-to-board plug of the present application;
FIG. 20 is another perspective view of a plug reinforcement member of a third embodiment of the board-to-board plug of the present application;
fig. 21 is a perspective view of a fourth embodiment of a board-to-board plug according to the present application;
fig. 22 is a perspective view of a fourth alternative embodiment of a board-to-board plug according to the present application;
Fig. 23 is a perspective view of a plug body of a fourth embodiment of the board-to-board plug 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 plug reinforcement member of a fourth embodiment of the board-to-board plug 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 clearly and completely described below with reference to specific embodiments of the present application and corresponding drawings.
The direction of the present application is defined as right (or lateral direction) with the X direction shown in fig. 1 as the left-right direction, front (or longitudinal direction) with the Y direction as the front-back direction, and upper (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 mounted on a printed circuit board and a socket B mounted on another printed circuit board, wherein the plug a and the socket B are fastened and connected with each other.
The plug a includes a plug body 10, a plurality of plug terminals 20 formed in the plug body 10, and plug reinforcements 30 fixed to both lateral ends of the plug body 10. The socket B includes a socket body 40, socket terminals 50 mounted on the socket body 40, and socket reinforcements 60 mounted and fixed on both lateral ends of the socket body 40.
With continued reference to 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 side walls 42 extending upward from both sides of the bottom wall 41 in the longitudinal direction, an island 45 protruding upward from the bottom wall 41 between the pair of socket side walls 42, socket guide portions 44 formed at both lateral ends of the socket body 40, and a plug side wall receiving cavity 43 formed between the island 45 and the pair of socket side walls 42.
The bottom wall of the socket body 40 is provided with a plurality of terminal slots 46 from bottom to top, the socket terminals 50 are assembled in the terminal slots 46 upwards, the socket terminals 50 comprise supporting arm portions 51 extending in the terminal slots 46 at the bottom wall 41 and exposed out of the bottoms of the terminal slots 46, socket terminal second contact portions 52 formed by bending and extending from the longitudinal outer sides of the supporting arm portions 51 and located on the longitudinal side surfaces of the island portions 45 and facing the socket side walls 42, socket terminal first contact portions 53 formed by bending and extending from the longitudinal inner sides of the supporting arm portions 51 and located on the longitudinal side surfaces of the socket side walls 42, holding portions 54 formed by bending and extending from the top ends of the first contact portions 53 reversely, and soldering legs 55 formed by bending and extending from the lower ends of the holding portions 54 vertically and extending to the longitudinal outer sides of the bottom wall 41 of the socket body 40.
Referring to fig. 4, the two lateral ends of the island 45 are provided with a protected portion 451 toward the socket guide portion 44, and the protected portion 451 includes a table portion 453 having a horizontal plane lower than the island 45, an avoidance slope 452 formed obliquely downward from the table portion 453, a clamping groove 454 formed by downwardly recessing from the table portion 453, and a communication groove 455 formed laterally outward from the clamping groove 454 and communicating with the avoidance slope 452.
The socket guide 44 includes peripheral walls 441, 442 and a plug guide receiving cavity 443 located between the peripheral walls 441, 442. The peripheral wall includes a longitudinal peripheral wall 441 and a pair of lateral peripheral walls 442 connected to both ends of the longitudinal peripheral wall 441, and the lateral peripheral walls 442 are connected to the socket side walls 42.
The plug guide receiving cavity 443 has a through hole 4431 formed therethrough in the up-down direction corresponding to the lateral extension of the island 45, and the through hole 4431 extends up to the lower end of the longitudinal peripheral wall 441. The outer and inner sides of the longitudinal peripheral wall 441 are respectively provided with a first and a second extending grooves 4411, 4412, and the second extending grooves 4412 are communicated with the through hole 4431. The middle of the lateral peripheral wall 442 protrudes upward to form a support shoulder 4421, and the outer periphery of the support shoulder 4421 is provided with a mounting step 4425 extending in the lateral direction and positioned at the longitudinal outer side of the support shoulder 4421, a communication step 4426 for isolating the support shoulder 4421 from the socket side wall 42, and an elastic avoidance 4424 extending in the lateral direction and positioned at the longitudinal inner side of the support shoulder 4421, respectively. The mounting step 4425, the communication step 4426 and the elastic relief 4424 are communicated with each other to form a U-shaped step. The support shoulder 4421 includes a thin wall portion 4422 adjacent to the longitudinal peripheral wall 441 and a thick wall portion 4423 extending from the thin wall portion 4422 in the lateral direction toward the receptacle 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 relief portion 4424 at the thin portion 4422 is greater 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 relief portion 4424 at the thin portion 4422. The lateral peripheral wall 442 is provided with a stepped portion 49 on a side thereof adjacent to the longitudinal peripheral wall 441. The mounting step 4425 is partially penetrated in a vertical direction to form a third extension groove 4428.
With continued reference to fig. 5 to 7, the socket stiffener 60 includes a main body portion 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 portion 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 portion 61 and extending to the protected portion 451 at the lateral end of the island 45, a top surface covering portion 66 extending from the longitudinal both ends of the main body portion 61 to the top surface of the support 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 4425 from the free end of the lateral peripheral wall covering portion 64 and a resilient arm portion 65 bent reversely and extending to the resilient dodging portion 4424 through the communication step 4426.
In another embodiment, the elastic arm portion 65 may extend from the outer side of the lateral peripheral wall covering portion 64 to the elastic relief 4424 after being reversely bent.
The free ends 642 of the longitudinal peripheral wall covering portions 62 are fixed to the printed circuit board as fillets, and the bottom ends of the transverse peripheral wall covering portions 64 are extended to the printed circuit board as fillets through the third extension slots 4428 for solder fixation. The main body 61 is folded down toward the plug guide receiving chamber 443 side on both longitudinal sides of the central guide 63 to form a slant guide 611.
The central guide portion 63 includes a first central guide arm 631 extending downward from the inner side of the main body portion 61 in the second extending groove 4412, a supporting bottom arm 632 extending from the bottom of the first central guide arm 631 to the bottom of the protected portion 451 on both sides of the island 45 along the through hole 4431, a second central guide arm 634 extending obliquely upward from the supporting bottom arm 632 to the upper side of the protected portion 451, and a locking end 635 extending downward from the free end of the second central guide arm 634 and locking into the locking groove 454. The first and second central guide arms 631, 634 serve to guide insertion of the plug reinforcement 30 and protect the longitudinal peripheral wall 441 of the socket body 40 and the protected portion 451 at both lateral ends of the island 45. The longitudinal outside surface covering portion 35 and the longitudinal inside surface covering portion 34 of the plug reinforcement 30 are guided by the first and second center guide arms 631, 634, respectively, and enter between the first and second center guide arms 631, 634 above the support bottom arm 632, but in the inserted state, the longitudinal outside surface covering portion 35 and the longitudinal inside surface covering portion 34 are not in electrical contact with the first and second center guide arms 631, 634. During the insertion process, the supporting bottom arm 632 is pressed and the mounted pcb generates supporting force to make the first and second central guide arms 631, 634 have a certain elasticity.
The top cover 66 includes a cover base 661, a guide portion 662 formed by bending down the step portion 49 from the inside of the cover base 661, and a guide slope 663 formed by thinning the inside edge of the cover base 661 at the elastic escape portion 4424. The top surface of the thick-walled portion 4423 of the support shoulder 4421 is exposed to the outside without being covered by the top surface covering portion 66. The bottom of the guide portion 662 is located above the stepped portion 49.
The elastic arm portion 65 includes a tension portion 651 formed by bending back from a free end in the lateral direction of the lateral outer peripheral wall covering portion 64, an elastic body arm 652 extending from the tension portion 651 in the lateral direction on the elastic escape portion 4424, and a contact protrusion 653 protruding from the elastic body arm 652 toward the plug guide receiving portion 443. The tightening part 651 extends over the mounting step 4425, the communication step 4426 and the elastic relief 4424, i.e. along the thick wall 4423 of the support shoulder 4421, while the elastic body arm 652 extends to the point where the elastic relief 4424 is located at the thin wall 4422. The elastic relief 4424 has more deformation space in the longitudinal direction at the position of the thin wall portion 4422, and the contact protrusion 653 extends at least partially into the plug guide receiving cavity 443. When the plug a is not inserted into the socket B, i.e., the socket B is in a natural state, the guide slope 663 of the top surface covering portion 66 does not cover the elastic body arm 652, and when the elastic body arm 65 is pressed longitudinally outward by the contact portion 331 of the lateral outside surface covering portion 33 of the plug reinforcement 30, the elastic body arm 652 may be partially located 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 a deformation gap is formed between the elastic arm body arm 652 and the inner side surface of the thin wall portion 4422, and when the contact protrusion 653 of the elastic arm 65 is longitudinally pressed, the elastic arm body arm 652 deforms in the deformation gap.
Referring to fig. 8 to 25, four embodiments of the board-to-board plug a according to the present application are shown, and the board-to-board plug a according to the present application will be described in detail below.
Example 1
Fig. 2 and fig. 8 to fig. 12 are schematic views of a first embodiment of a board-to-board plug a according to the present application.
The plug body 10 of the plug a includes a top wall 11, a pair of plug side walls 12 formed to extend downward from both longitudinal sides of the top wall 11, plug guide portions 14 formed at both lateral ends of the plug body 10, and island receiving cavities 13 formed between the top wall 11, the pair of plug side walls 12, and the plug guide portions 14.
The plug terminals 20 are integrally formed on the pair of plug side walls 12 in two rows in the lateral direction, and the plug guide 14 includes a bottom surface 141, a lateral outer side surface 142, a pair of longitudinal outer side surfaces 143, and a slope 144 facing the island receiving cavity 13. An embedded groove 145 is formed along the bottom surface 141, the lateral outer side 142, and the top wall 11. The longitudinal outer side surface 143 is extended with a buried groove 146 communicating with the buried groove 145 at the longitudinal outer side surface 142, and the lower end of the buried groove 146 is extended to the longitudinal both ends of the bottom surface 141. The insert groove 145 extends in the lateral direction on the surface of the top wall 11, and then diverges to extend out of the top wall 11 along both sides in the longitudinal direction.
The plug reinforcement 30 includes a peripheral wall 31 surrounding the longitudinal outer side 142 and the lateral outer side 143 of the plug guide 14, a covering bottom 32 formed by bending perpendicularly from the bottom end of the peripheral wall 31, a covering top 33 formed by bending perpendicularly from the top of the peripheral wall 31 at one lateral end, and fillets 332 formed by extending from the distal end of the covering top 33 along both longitudinal sides.
The peripheral wall 31 has a U-shaped structure, and includes a lateral peripheral wall 311 covering the lateral outer side 142, and a longitudinal peripheral wall 312 perpendicularly bent from two longitudinal ends of the lateral peripheral wall 311 and covering the longitudinal outer side 143. The cover bottom 32 includes a longitudinal cover bottom 322 formed by vertically bending and extending from the bottoms of the pair of longitudinal peripheral walls 312 and a transverse cover bottom 321 formed between the pair of longitudinal cover bottoms 322 by vertically bending and extending from the bottoms of the transverse peripheral walls 311. The free end of the lateral cover bottom 321 is punched downward to form a guide slope 323. The covering top 33 is formed by vertically bending and extending from the top end of the lateral peripheral wall 311, and includes an extension base 331, the fillets 332 formed by branching from the free end of the extension base 331 and extending along two sides in the longitudinal direction, and branching openings 333 formed at the free end of the extension base 331.
The free end 313 of the longitudinal peripheral wall 312 at least partially overlaps the fillets 332 when viewed in a vertical direction, 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 a clearance gap 314 to avoid interference between the two.
The plug reinforcement 30 and the plug terminals 20 are integrally injection molded with the plug body 10, and the lateral cover bottom 321, the lateral peripheral wall 311, and the cover top 33 are fitted into the fitting groove 145 of the plug guide 14. The longitudinal peripheral wall 312 and the longitudinal cover bottom 322 are embedded within the buried channel 146. The top surface of the cover top 33 is exposed outside the top wall 11 of the plug body 10. The longitudinal peripheral wall 312 contacts the contact protrusion 653 of the socket stiffener 60 as a contact portion.
The plug terminal 20 includes a plug terminal leg 24 extending from the upper surface of the top wall 11 in the longitudinal direction out 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 reversely from the lower end of the plug terminal first contact portion 22 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 second contact portion 23 is bent in the direction of the first contact portion 22, and an insertion end 25 is formed so as to be inserted into the plug side wall 12. The embedded 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 the plug a is inserted into the socket B, the longitudinal peripheral wall 312 of the plug reinforcement 30 contacts the guide portion 611, the guide portion 662, and the guide inclined surface 663 first and is guided to be aligned with the plug guide portion receiving chamber 433, and continues to be pressed down, the contact protrusion 653 makes electrical contact with the contact portion (longitudinal peripheral wall) 312 of the plug reinforcement 30 to transmit electric current, and the elastic body arm 652 is deformed by pressing toward the thin-walled portion 4422 and provides elastic force. The plug reinforcement 30 and the socket reinforcement 60 are in electrical contact with the two contact protrusions 653 through the two contact portions 312 in the longitudinal direction for transmitting a current, which may reach 15 amperes for the transmission load of the current.
When the plug a is mated with the socket B, the island 45 is received in the island receiving cavity 13 of the plug a, the plug sidewall 12 of the plug a is received in the plug sidewall receiving cavity 43 of the socket B, and the plug guide 14 is guided into the socket guide 44. The plug terminal 20 is engaged between the first and second contact portions 53, 52 of the socket terminal 50, and the first and second contact portions 22, 23 of the plug terminal 20 are in electrical contact with the first and second contact portions 53, 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 exists between the two; in an embodiment, the transverse covering bottom 321 and the longitudinal covering bottom 322 may also be integrally formed, and manufactured by a stretching process, so that the exposed surface of the plug reinforcement 30 is further enlarged, the heat dissipation capacity of the plug reinforcement 30 is increased, and the current passing capacity is improved.
When in operation, current is conducted from the contact protrusions 653 of the socket B to the longitudinal peripheral wall 312 of the header reinforcement 30, and flows into the corresponding printed circuit board along the longitudinal peripheral wall 312, the transverse peripheral wall 311, the extension base 331, and 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 impedance.
Compared with the prior art, the cover top 33 of the plug reinforcement member 30 of the board-to-board plug a of the present application is bent from the top of the peripheral wall 31 to extend onto the top wall 11, thereby increasing the area of the plug reinforcement member 30, tightly wrapping the plug guide 14 to increase the strength of the plug guide 14, and increasing the surface area of the plug reinforcement member 30, which is advantageous for the heat dissipation problem that may occur in the large current transmission.
Example two
Fig. 2, 13-15 are schematic diagrams of a second embodiment of the 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 extension base 331 of the top 33 of the plug reinforcement 30 and the soldering leg 332 is bent upwards to form a bent portion 334, and the bent portion 334 makes the horizontal position of the soldering leg 332 higher than the horizontal position of the extension base 331. Eventually, the extension base 331 is completely enclosed in the top wall 11, i.e., the extension base 331 is not exposed to the outside. The guide slope 323 is folded inwards to wrap in the plug guide 14.
Meanwhile, the solder fillets 332 of the plug reinforcement 30 of the first and second embodiments are in the same direction as the plug terminal solder fillets 24 of the plug terminal 20, so that the material tape connected to the solder fillets 332 of the plug reinforcement 30 and the material tape connected to the plug terminal solder fillets 24 can be cut at the same time after injection molding. Namely, one process is completed to cut out the material strips of the plug reinforcement 30 and the plug terminals 20.
Similar to the first embodiment, the second embodiment is achieved by extending the base 331 to strengthen the top wall 11 and increase the heat dissipation area.
Example III
Fig. 16 to 20 are schematic views showing a third embodiment of the board-to-board plug a according to the present application.
The plug body and the plug terminal of the board-to-board plug a in the third embodiment are the same as those in the first and second embodiments, and will not be described again here.
The main difference is that the plug reinforcement 30 of the third embodiment includes a covering bottom portion 32 covering the bottom surface 141 of the plug guide portion 14, peripheral walls 31 bent downward from both ends of the covering bottom portion 32 in the longitudinal direction and the lateral outside and covering the longitudinal outside surface 143 and the lateral outside surface 142, and a connecting portion 34 bent upward from the lateral inside of the covering bottom portion 32.
The covering bottom 32 extends longitudinally to cover the bottom surface 141, and the peripheral wall 31 includes a longitudinal peripheral wall 312 extending from two longitudinal sides of the covering bottom 32 to cover the longitudinal outer side 143, and a transverse peripheral wall 311 extending from a transverse outer side of the covering bottom 32 to cover the transverse outer side 142. The lateral peripheral wall 311 is surface-stamped to form a convex hull 313 protruding laterally outward, and the longitudinal peripheral wall 312 serves as a contact portion for electrical transmission in electrical contact with the contact protrusion 653 of the receptacle terminal 60. The longitudinal peripheral wall 312 and the transverse peripheral wall 311 have a gap therebetween, and in an embodiment, the longitudinal peripheral wall 312 and the transverse peripheral wall 311 may be integrally formed in a seamless structure, and may be formed by a stamping and stretching process, so that the strength of the plug guide 14 may be effectively enhanced, but the coupling force between the plug guide 14 and the plug reinforcement 30 may be reduced.
The connecting portion 34 is formed by bending and extending upward from the lateral inner side of the cover bottom 32, and a guiding slope 323 is formed at the bending position. The connecting portion 34 includes a vertical connecting portion 341 formed by bending and extending upward from the covering bottom 32, a horizontal connecting portion 342 formed by bending and extending from the top of the vertical connecting portion 341, and soldering feet 343 extending from the horizontal connecting portion 342 along two longitudinal sides out of the plug body 10. The horizontal connection portion 342 is formed with a through hole 344 therethrough to allow plastic material to fill and increase the bonding force between the plug body 10 and the plug reinforcement 30, and the upper surface of the horizontal connection portion 342 is exposed outside the top wall 11 of the plug body 10 to facilitate heat dissipation. The width of the vertical connection portion 341 is not smaller than the width of the horizontal plane of the lateral wall surface of the island portion receiving cavity 13 so that the width of the vertical connection portion 341 is increased as much as possible.
The plug reinforcement 30 has a thickness greater than the thickness of the plug terminal 20. The leg 343 is in the same direction as the pin 24 of the plug terminal, so that the tape of the plug terminal 20 and the plug reinforcement 30 can be cut at a time.
The plug reinforcement 30 of the present embodiment is formed by bending and extending the inner side of the cover bottom 32 in the lateral direction to form the connection portion 34, so that the connection portion 34 does not overlap with the cover bottom 32 in the vertical direction in a projection manner, thereby reducing the stamping difficulty, and simultaneously taking into account the wrapping area to increase the strength and the heat dissipation capability.
Example IV
Fig. 2, 21 to 25 are schematic diagrams illustrating a fourth embodiment of the board-to-board plug a according to the present application. The fourth embodiment has a large difference from the previous embodiments, and has a larger similarity with the plug a in the background document.
The plug body 10 and the plug terminal 20 of the board-to-board plug a of the fourth embodiment are identical to those of the third embodiment, and will not be described here again.
The plug reinforcement 30 of the present embodiment is integrally formed on the plug guide portion 14 of the plug body 10, and the plug reinforcement 30 on each of the plug guide portions 14 includes a pair 30a,30b arranged in the longitudinal direction, the plug reinforcements 30a,30b being two separate members. The plug terminals 20 include two rows of plug terminals 20 arranged in the longitudinal direction. Two plug reinforcements 30a or 30b are respectively corresponding to two lateral ends of each row of plug terminals 20, and the plug terminals 20 and the plug reinforcements 30 are formed by stamping the same sheet metal and connected to the same material belt.
Each of the plug reinforcements 30a,30b includes a cover bottom 32, a peripheral wall 31 formed by bending and extending downward from the lateral outer side and the longitudinal outer side of the cover bottom 32, a fillet 315 formed by bending and bending from the bottom of the peripheral wall 31, and a reinforcing top 35 formed by extending from the lateral inner side of the cover bottom 32 along the inclined surface 144.
The peripheral wall 31 includes a lateral peripheral wall 311 folded downwardly from the lateral outside of the cover bottom 32 and wrapped around the lateral outside surface 142, and a longitudinal peripheral wall 312 extending downwardly from the longitudinal outside of the cover bottom 32 and wrapped around the longitudinal outside surface 143. The cover bottom 32 overlies the bottom surface 141. The width of the upper side of the lateral peripheral wall 311 is larger than that of the lower side, so that a gap is formed between the lateral peripheral wall 311 and the cover bottom 32, and the gap is filled with plastic to enhance the bonding force between the lateral peripheral wall 311 and the plug guide 14. The side of the longitudinal peripheral wall 312 close to the transverse peripheral wall 311 extends downwards to be flush with the top wall 11, the top end of the side of the longitudinal peripheral wall 312 close to the plug terminal 20 is bent towards the longitudinal outside to form the soldering leg 315, and the soldering leg 315 is flush with the top surface of the soldering leg 24 of the plug terminal. The thickness of the plug terminal 20 corresponds to the thickness of the plug reinforcement 30.
The lateral inner side of the cover bottom 32 is formed with a guiding slope 323, and the reinforcing top 35 is formed by bending and extending from the lateral inner side of the cover bottom 32 and then bending horizontally. Specifically, the reinforcing top 35 includes a vertical arm 351 extending upward from the guide slope 323 along the slope 144, and a horizontal arm 352 bent inward from the top of the vertical arm 351, and a free end of the horizontal arm 352 is formed with a through hole 353. The free ends of the horizontal arms 352 are exposed within the island receiving cavities 13 of the plug body 10. The through holes 353 are filled with the plastic material to enhance the coupling force.
The board-to-board plug a of the present embodiment can greatly reduce the production cost and the mold development cost by dividing the plug reinforcement 30 into two independent pieces in the longitudinal direction, so that the plug reinforcement 30 and the plug terminal 20 are formed by one-step stamping. Meanwhile, the reinforcing top 35 can enhance the strength of the plug guide 14 and increase the heat dissipation area, which is beneficial to the transmission of large current.
The foregoing is merely exemplary of the present application and is not intended to limit the present application. Various modifications and variations of the present application will be apparent to those skilled in the art. Any modification, equivalent replacement, improvement, etc. which come within the spirit and principles of the application are to be included in the scope of the claims of the present application.

Claims (7)

1. The utility model provides a board-to-board plug, includes plug body, a plurality of plug terminal and plug reinforcement, the plug body includes the roof, from the vertical both sides of roof downwardly extending form a pair of plug lateral wall, form in the plug guide portion of the horizontal both ends of plug body and form in the roof, island portion receiving cavity between a pair of plug lateral wall and the plug guide portion, the plug terminal integrated into one piece is on a pair of plug lateral wall, the plug reinforcement integrated into one piece is on the plug guide portion, characterized by, two independent plug reinforcement arrange the shaping on a plug guide portion in the longitudinal direction, every plug reinforcement all includes along the outside weld leg of longitudinal extension plug body, the plug terminal includes the contact portion of the inside and outside both sides of plug lateral wall and along the outside plug terminal weld leg of longitudinal extension plug body, the weld leg of plug reinforcement is unanimous with plug terminal weld leg orientation, the plug reinforcement is with the integrative punching press of plug terminal;
Each plug reinforcement comprises a cover bottom part covering a part of the bottom surface of the plug guide part, a reinforcement top part formed by bending and extending from the transverse inner side of the cover bottom part upwards, a guide inclined surface formed by bending the reinforcement top part and the cover bottom part, and a vertical arm formed by extending upwards from the guide inclined surface and a horizontal arm formed by bending from the top end of the vertical arm towards the transverse inner side;
The two transverse ends of each group of plug terminals are respectively provided with a plug reinforcement member which is integrally formed by stamping, and the welding legs of the plug terminals and the welding legs of the plug reinforcements are connected to the same material belt;
the free end of the horizontal arm is penetrated and formed with a through hole, the free end of the horizontal arm is exposed in the island part receiving cavity of the plug body, and the through hole is filled with plastic materials.
2. The board-to-board plug according to claim 1, further comprising a lateral peripheral wall bent upward from a lateral outer side of said cover bottom and covering a part of a lateral outer side of said plug guide, a longitudinal peripheral wall bent upward from a longitudinal outer side of said cover bottom and covering a longitudinal outer side of said plug guide, and fillets of said plug reinforcement are formed by bending and extending from a top of said longitudinal peripheral wall along a longitudinal outer side.
3. The board-to-board plug according to claim 2, wherein a pair of plug reinforcements on the same plug guide are symmetrical along a transverse midline, and the covering bottom, the transverse peripheral wall and the reinforcing top of both of the plug reinforcements are combined, respectively.
4. The board-to-board plug of claim 2, wherein said plug terminal extends beyond said top wall in a longitudinal direction at an upper surface of said top wall to form said plug terminal leg, wherein said contact portion of said plug terminal includes a plug terminal first contact portion bent from said plug terminal leg along said top wall surface onto an inner side of said plug side wall and a plug terminal second contact portion bent back from a lower end of said plug terminal first contact portion to extend onto an outer side of said plug side wall, wherein said leg of said plug reinforcement is oriented in the same direction as said plug terminal leg and is coplanar at a top surface.
5. The board-to-board connector assembly according to claim 1, comprising a socket and a plug according to claim 1, wherein the socket comprises a socket body, socket terminals and socket reinforcing members, the socket body comprises a bottom wall, socket side walls formed by protruding upward from both longitudinal ends of the bottom wall, socket guide portions formed at both transverse ends of the socket body, and island portions formed by protruding upward from the bottom wall, the socket reinforcing members cover the socket guide portions, plug side wall receiving cavities are formed between the socket side walls and the island portions, and when the plug is coupled to the socket, the island portions of the socket body are snapped into the plug island portion receiving cavities, the plug side walls are inserted into the plug side wall receiving cavities, the plug terminals are in electrical contact with the socket terminals, the plug reinforcing members are in electrical contact with the socket reinforcing members, and the longitudinal peripheral walls of the plug reinforcing members are in electrical contact with the socket reinforcing members as contact portions.
6. The board-to-board connector assembly of claim 5, 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 reinforcing member includes a main body portion covered on a surface of the longitudinal peripheral wall, a top face covering portion and a lateral peripheral wall covering portion extending in a lateral direction from both longitudinal sides of the main body portion to cover a top face and an outer side face of the lateral peripheral wall, and an elastic arm portion extending from the lateral peripheral wall covering portion to a side of the lateral peripheral wall near the plug guide receiving cavity, the top face covering portion being bent downward near an inner side of the lateral peripheral wall to form a guide portion, the guide portion being non-overlapping with the elastic arm portion as viewed from above, a bottom of the guide portion being lower than a top of the elastic arm portion.
7. The board-to-board connector assembly of claim 6, wherein said top cover portion is thinned at an inner edge on one side of said resilient arm portion to form a guide slope, said guide slope being free from overlapping with said resilient arm portion when said plug is not inserted into said receptacle, 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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