CN216624743U - Self-locking type board-to-board connector assembly - Google Patents

Abstract

A self-locking board-to-board connector assembly comprises a plug and a socket which are matched and connected with each other, the socket comprises a socket body and a socket terminal fixed on the socket body, the plug comprises a plug body and a plug terminal fixed on the plug body, the socket terminal and the plug terminal respectively comprise a socket fixing sheet and a plug fixing sheet which are matched with each other, the socket fixing piece comprises a fixing part and a locking part which is formed by bending inwards from the top of the fixing part, the plug fixing piece comprises an embedding part and a locked part which is formed by tearing the embedding part and bending outwards and is locked below the locking part, the locking part comprises an arc-shaped bending part formed by bending the top of the fixing part and a horizontal locking part formed by horizontally bending the bottom side of the arc-shaped bending part, and the locked part is locked at the lower side of the horizontal locking part. This application is connected stably from locking-type board to board connector subassembly.

Description

Self-locking type board-to-board connector assembly

Technical Field

The present application relates to the field of electrical connectors, and more particularly, to a self-locking board-to-board connector assembly.

Background

The board-to-board connector is widely used in electronic devices for transmitting signals and currents, such as communication connection between a screen and a motherboard, communication connection between a touch control assembly and the motherboard, communication connection between radio frequency signals and different motherboards, and power transmission between a battery and the motherboard. The existing board-to-board connectors are configured in pairs and comprise a male head and a female seat which are mutually inserted and matched, and the male head and the female seat are mutually fastened and realize the electric contact of a conductive terminal so as to realize the transmission of signals and electric energy. The male head and the female seat generally comprise an insulating body, and a plurality of conductive terminals and fixing pieces which are arranged on the insulating body, wherein the conductive terminals of the male head and the female seat are mutually matched and connected to transmit signals, and the fixing pieces of the male head and the female seat are mutually abutted and provide holding force and can be used as a power transmission channel. In the process of matching and connecting, the conductive terminal and the fixing piece are both kept the male head and the female seat through the elastic force of mutual extrusion, and when the product is vibrated by external force, the male head and the female seat are easy to separate.

SUMMERY OF THE UTILITY MODEL

In view of the above, there is a need for a self-locking board-to-board connector assembly with stable connection.

In order to solve the technical problem, the application provides a self-locking type board-to-board connector assembly, which comprises a plug and a socket which are connected with each other in a matching mode, wherein the socket comprises a socket body and a socket terminal fixed on the socket body, the plug comprises a plug body and a plug terminal fixed on the plug body, the plug body comprises a top wall, a plug peripheral wall and an island accommodating cavity which are formed by downward protrusion of the periphery of the top wall, the socket body comprises a bottom wall, a central island part and a socket peripheral wall which are formed by upward protrusion of the middle and the periphery of the bottom wall respectively, and a plug receiving cavity formed between the central island part and the socket peripheral wall, the socket terminal and the plug terminal respectively comprise a socket fixing sheet and a plug fixing sheet which are matched with each other, the socket fixing sheet comprises a fixing part fixed in the socket peripheral wall and a locking part which is formed by bending towards the plug receiving cavity from the top of the fixing part, the plug fixing piece comprises an embedded part fixed in the peripheral wall of the plug and a locked part which is formed by tearing the embedded part and bending outwards and is buckled below the locking part, the locking part comprises an arc-shaped bending part formed by bending the top of the fixing part and a horizontal locking part formed by horizontally bending the bottom side of the arc-shaped bending part, and the locked part is locked at the lower side of the horizontal locking part.

Preferably, the socket peripheral wall includes a transverse socket peripheral wall and a longitudinal socket peripheral wall, the header peripheral wall includes a transverse header peripheral wall and a longitudinal header peripheral wall, the header peripheral wall is inserted into the header receiving cavity, and the central island portion is received in the island portion receiving cavity.

Preferably, the fixing portion of the socket fixing piece is formed in the longitudinal socket peripheral wall, the arc-shaped bending portion is formed by bending the top of the fixing portion and then extending downward and toward the plug receiving cavity, and the horizontal locking portion is formed by horizontally bending and extending from the bottom end of the arc-shaped bending portion toward the fixing portion.

Preferably, there is the clearance in order to supply between horizontal hasp portion and the fixed part the arc portion of bending provides the deformation space when outside elastic deformation, the socket stationary blade still includes certainly the fixed part bottom level outwards bends the leg that forms.

Preferably, in a natural state of the locking portion, the locked portion and the horizontal locking portion are overlapped in the vertical direction and abut against the lower side of the horizontal locking portion; when the arc-shaped bending part of the locking part is extruded outwards, the locked part and the horizontal locking part are staggered in the vertical direction.

Preferably, the inner side of the longitudinal socket peripheral wall is recessed from top to bottom to form a notch, and the locking part is positioned in the notch; the longitudinal plug peripheral wall is inwards sunken to form an inner concave part, and the locked part outwards protrudes out of the surface of the inner concave part.

Preferably, the horizontal socket enclosure wall is close to the internal surface of vertical socket enclosure wall one side outwards caves in and is formed with and keeps away the vacancy portion, the socket stationary blade still includes certainly the vertical both ends of fixed part are bent perpendicularly and are extended to keep away the elastic contact arm in the vacancy portion, the plug stationary blade still include certainly embedding portion downside bend and wrap up in the cladding portion of the horizontal both ends bottom surface of plug body, certainly the vertical outside of cladding portion upwards bends to extend and cover in the contact wall on horizontal plug enclosure wall surface and from the leg that the contact wall top was bent and is formed.

Preferably, the elastic contact arm includes an elastic main arm formed by bending and extending from the fixing portion, an inner contact portion protruding from a free end of the elastic main arm toward the plug receiving cavity, and a guide portion opening from a top of the inner contact portion to a longitudinal outer side.

Preferably, after the plug is inserted into the socket, the contact wall contacts the inner contact to achieve electrical conduction.

Preferably, the top end of the inner concave part of the plug body is sunken downwards to form a lower concave part.

This application is from locking-type board to board connector assembly is through set up elastic sticking department on the socket stationary blade, and set up horizontal hasp portion on the sticking department set up on the plug stationary blade and can outwards extrude the sticking department is detained and is gone into horizontal hasp portion downside is realized by hasp portion the auto-lock when detaining of plug and socket, under no instrument cooperation, the plug can't withdraw from, can realize the connection that remains stable under the environment of some special requirements.

Drawings

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

fig. 1 is a perspective assembly view of the self-locking board-to-board connector assembly of the present application;

FIG. 2 is a heat-generating exploded perspective view of the self-locking board-to-board connector assembly of the present application;

fig. 3 is an exploded perspective view of the receptacle of the self-locking board-to-board connector assembly of the present application;

fig. 4 is an exploded perspective view of the plug of the self-locking board-to-board connector assembly of the present application;

fig. 5 is an exploded perspective view of another angle of the plug of the self-locking board-to-board connector assembly of the present application;

fig. 6 is a sectional view taken along the broken line a-a shown in fig. 1.

Description of the reference numerals

A socket-A; plug-B; a socket body-10; a bottom wall-11; a center island portion-12; a socket peripheral wall-13; a transverse receptacle peripheral wall-131; socket terminal slot-1311; an escape portion-1312; a cover portion-1313; a longitudinal receptacle peripheral wall-132; gap-1321; through hole-1322; a step-1323; a plug-receiving cavity-14; a socket terminal-20; receptacle signal terminals-201; a socket securing tab-202; a fixed part-21; a resilient contact arm-22; a resilient main arm-221; inner contact-222; a guide portion-223; a solder tail-23; filling the hole-231; a locking portion-24; an arc bending part-241; a horizontal latch portion-242; a plug body-30; a top wall-31; island receiving cavity-32; a plug peripheral wall-33; a transverse plug peripheral wall-331; plug terminal slot-3311; a longitudinal plug peripheral wall-332; a lower recess-3321; an interior recess-3322; a plug terminal-40; plug signal terminal-401; a plug securing plate-402; an insert portion-41; a contact wall-42; a solder tail-43; a cladding-44; and a locked part-45.

Detailed Description

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

In the present application, the Z direction shown in fig. 1 and 4 is the upper direction (vertical direction), the X direction is the left-right direction (lateral direction), and the Y direction is the front-back direction (longitudinal direction).

Referring to fig. 1 and 2, the self-locking board-to-board connector assembly of the present application includes a socket a and a plug B coupled and locked with the socket. The socket a comprises a socket body 10 and a socket terminal 20 formed or assembled on the socket body 10, and the plug B comprises a plug body 30 and a plug terminal 40 formed or assembled on the plug body 30.

With reference to fig. 3, the socket body 10 includes a bottom wall 11, a central island 12 formed to protrude upward from the middle of the bottom wall 11, a socket peripheral wall 13 formed to protrude upward from the outer periphery of the bottom wall 11, and a plug receiving cavity 14 formed at the upper side of the bottom wall 11 and located between the central island 12 and the socket peripheral wall 13. The socket peripheral wall 13 includes a transverse socket peripheral wall 131 extending in the X direction and a longitudinal socket peripheral wall 132 extending in the Y direction, and a projection of the socket body 10 in the vertical direction is rectangular.

The middle of the transverse socket peripheral wall 131 opposite to the side face of the central island 12 is provided with a socket terminal groove 1311, and the socket terminal groove 1311 is arranged along the inner side face of the transverse socket peripheral wall 131, the bottom wall 11 and the outer side face of the central island 12. The inner side surfaces of the lateral socket peripheral walls 131 at both lateral ends of the socket terminal groove 1311 are recessed outward to form clearance portions 1312, the clearance portions 1312 do not penetrate through the lateral socket peripheral walls 131 outward, and the bottom wall 11 is cut away at positions corresponding to the clearance portions 1312. The junction of the socket transverse peripheral wall 131 and the longitudinal socket peripheral wall 132 protrudes toward the plug receiving cavity 14 to form a covering part 1313, and the covering part 1313 partially covers the clearance 1312 to protect the socket terminals located in the clearance 1312. The longitudinal socket peripheral wall 132 is formed with a notch 1321 recessed downward at one side of the plug receiving cavity 14, and a through hole 1322 and a step 1323 formed on the notch 1321 are cut at a position of the bottom wall 11 adjacent to the notch 1321.

The socket terminal 20 includes a socket signal terminal 201 fixed in the socket terminal groove 1311 and a socket fixing piece 202 formed and fixed in the longitudinal socket peripheral wall 132. The receptacle signal terminals 201 are used for transmitting signals, and the receptacle fixing pieces 202 are used for maintaining a holding force between the plug B and the receptacle a in cooperation with the plug B. The socket signal terminals 201 are well known in the art and will not be described herein. The socket fixing plate 202 includes a fixing portion 21 formed in the longitudinal socket peripheral wall 132, elastic contact arms 22 extending from both longitudinal ends of the fixing portion 21 into the clearance 1312 by being bent in the transverse direction, solder fillets 23 formed by being bent and extended horizontally from the bottom of the fixing portion 21 along the transverse outer side, and locking portions 24 formed by being bent and extended from the top of the fixing portion 21 along the transverse inner side.

A filling hole 231 is cut at the joint of the fixing portion 21 and the solder tail 23. The elastic contact arm 22 is suspended in the space 1312, and the elastic contact arm 22 includes an elastic main arm 221 bent and extended from the fixed portion 21, an inner contact 222 bent and projected from a free end of the elastic main arm 221 toward the plug receiving cavity 14, and a guide 223 bent and extended from a tip end of the inner contact 222 to a longitudinal outer side. An elastic deformation gap exists between the outer side surface of the elastic contact arm 22 and the inner side surface of the clearance 1312 to provide a deformation space for the elastic contact arm 22. The inner contact 222 is at least partially located within the plug receiving cavity 14, further away from the inner side of the void 1312 than the resilient main arm 221. The top of the resilient main arm 221 is at least partially covered by the covering portion 1313 to avoid scratching damage to the resilient main arm 221 when the plug B is inserted, and the guide 223 at the top of the inner contact 222 also serves to avoid scratching damage. The locking portion 24 is located in the gap 1321, and the locking portion 24 includes an arc-shaped bending portion 241 formed by bending and extending from the top of the fixing portion 21 inward and downward in an arc shape, and a horizontal locking portion 242 formed by horizontally bending the arc-shaped bending portion 241 toward the fixing portion 21. A certain gap exists between the horizontal locking part 242 and the fixing part 21, and when the arc bending part 241 is pressed downwards, the horizontal locking part 242 elastically deforms towards the fixing part 21.

With continued reference to fig. 4 and 5, the header body 30 includes a top wall 31, a header peripheral wall 33 formed to protrude downward from an outer edge of the top wall 31, and an island receiving cavity 32 defined by the top wall 31 and the header peripheral wall 33. The header peripheral wall 33 includes a transverse header peripheral wall 331 and a longitudinal header peripheral wall 332, the transverse header peripheral wall 331 is provided with header terminal grooves 3311, the longitudinal header peripheral wall 332 is formed with an inner recess 3322 inwardly recessed, and an upper end of the inner recess 3322 is formed with a lower recess 3321 downwardly recessed.

The plug terminal 40 includes a plug signal terminal 401 and a plug fixing piece 402, and the plug signal terminal 401 is butted with the socket signal terminal 201, which is a conventional technology and is not described herein again. The header fixing piece 402 includes an embedding portion 41 embedded in the inner recess 3322 of the longitudinal header peripheral wall 332, a covering portion 44 bent horizontally from the bottom of the embedding portion 41 and covering the bottom surfaces of both lateral ends of the header body 30, a contact wall 42 bent upward from the covering portion 44 and covering the outer side surface of the lateral header peripheral wall 331, a solder leg 43 formed by bending horizontally from the top of the contact wall 42, and a latched portion 45 formed by tearing the embedding portion 41 and protruding outward. The upper surface of the locked part 45 is horizontal and protrudes out of the transverse outer side of the inner concave part 3322, and the transverse end edge of the locked part 45 is provided with an inclined step surface so as to press the arc-shaped bending part 241 of the locking part 24 downwards.

With continued reference to fig. 6, when the header B is inserted into the socket a, the header peripheral wall 33 is inserted into and received in the header receiving cavity 14 of the socket a, and the center island 12 is inserted into and received in the island receiving cavity 32. Plug signal terminal 401 with socket signal terminal 201 is in mutual contact switches on in the plug receiving cavity 14, plug stationary blade 402 extrudees socket stationary blade 202, and makes contact wall 42 with the interior contact portion 222 electrical contact of elastic contact arm 22, extrude to horizontal outside by latch portion 45 the arc portion of bending 241 of sticking portion 24 and finally block into horizontal latch portion 242 downside realizes the auto-lock, horizontal latch portion 242 is located latching portion 45 upside exerts the holding power, under the exogenic action such as transportation jolt, plug B can not auto-eject. When the plug B needs to be removed, the locking portion 24 needs to be pressed laterally outward by an external force, so that the horizontal locking portion 242 and the locked portion 45 are dislocated to remove the plug B. The plug retaining plate 402 and the socket retaining plate 202 can transmit electric energy or signals through the electrical connection of the contact wall 42 and the elastic contact arm 22, i.e., the plug retaining plate 402 and the socket retaining plate 202 are used as conductive terminals to transmit electric current, especially higher power electric energy transmission.

This application is from locking-type board to board connector assembly is through set up elastic locking portion 24 on the socket stationary blade 202, and set up horizontal hasp portion 242 on the locking portion 24 set up on the plug stationary blade 402 and can outwards extrude locking portion 24 and detain and go into horizontal hasp portion 242 downside is realized by hasp portion 45 plug B and socket A auto-lock when detaining, under no instrument cooperation, plug B can't withdraw from, can realize keeping stable connection under some special requirements's environment.

In other embodiments, if there is not much requirement for the appearance, the self-locking board-to-board connector assembly of the present application may also be injection molded with the insulating body at one time without performing injection molding twice.

The technical features of the above embodiments can be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the above embodiments are not described, but should be considered as the scope of the present specification as long as there is no contradiction between the combinations of the technical features.

The above examples only express preferred embodiments of the present invention, and the description thereof is more specific and detailed, but not to be construed as limiting the scope of the utility model. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.

Claims (10)

1. A self-locking type board-to-board connector assembly comprises a plug and a socket which are connected with each other in a matching mode, wherein the socket comprises a socket body and a socket terminal fixed on the socket body, the plug comprises a plug body and a plug terminal fixed on the plug body, the plug body comprises a top wall, a plug peripheral wall and an island part accommodating cavity, the plug peripheral wall and the island part accommodating cavity are formed by downward protrusion from the periphery of the top wall, the socket body comprises a bottom wall, a central island part and a socket peripheral wall, the central island part and the socket peripheral wall are formed by upward protrusion from the middle and the periphery of the bottom wall respectively, and a plug receiving cavity is formed between the central island part and the socket peripheral wall, the socket terminal and the plug terminal respectively comprise a socket fixing sheet and a plug fixing sheet which are matched with each other, the self-locking part comprises a fixing part fixed in the socket peripheral wall and a locking part formed by bending from the top of the fixing part towards the plug receiving cavity, the plug fixing piece comprises an embedded part fixed in the peripheral wall of the plug and a locked part which is formed by tearing the embedded part and bending outwards and is buckled below the locking part, the locking part comprises an arc-shaped bending part formed by bending the top of the fixing part and a horizontal locking part formed by horizontally bending the bottom side of the arc-shaped bending part, and the locked part is locked at the lower side of the horizontal locking part.

2. The self-locking board-to-board connector assembly according to claim 1, wherein said receptacle peripheral wall includes a transverse receptacle peripheral wall and a longitudinal receptacle peripheral wall, and said header peripheral wall includes a transverse header peripheral wall and a longitudinal header peripheral wall, said header peripheral wall being inserted into said header receiving cavity, said central island portion being received in said island portion receiving cavity.

3. The self-locking board-to-board connector assembly according to claim 2, wherein the fixing portion of the socket fixing piece is formed in the longitudinal socket peripheral wall, the arc-shaped bent portion is formed by bending from the top of the fixing portion and extending downward and toward the plug receiving cavity, and the horizontal locking portion is formed by bending from the bottom end of the arc-shaped bent portion and extending horizontally toward the fixing portion.

4. The self-locking board-to-board connector assembly of claim 3, wherein a gap exists between the horizontal locking portion and the fixing portion for the arc-shaped bending portion to provide a deformation space when elastically deformed outwards, and the socket fixing piece further includes a solder leg formed by bending outwards from the bottom end of the fixing portion.

5. The self-locking board-to-board connector assembly according to claim 4, wherein the locked portion is overlapped with the horizontal locking portion in an up-down direction and abuts against a lower side of the horizontal locking portion in a natural state of the locking portion; when the arc-shaped bending part of the locking part is extruded outwards, the locked part and the horizontal locking part are staggered in the vertical direction.

6. The self-locking board-to-board connector assembly according to claim 5, wherein the inside of the longitudinal socket peripheral wall is recessed from the top to the bottom to form a notch, and the locking portion is located in the notch; the longitudinal plug peripheral wall is recessed inwards to form an inner concave part, and the locked part protrudes outwards from the surface of the inner concave part.

7. The self-locking board-to-board connector assembly according to claim 4, wherein the inner surface of the lateral socket peripheral wall on the side close to the longitudinal socket peripheral wall is recessed outward to form a recess, the socket securing plate further includes elastic contact arms bent perpendicularly from the longitudinal ends of the fixing portion and extending into the recess, the plug securing plate further includes a covering portion bent from the lower side of the embedding portion and covering the bottom surfaces of the lateral ends of the plug body, a contact wall bent upward from the longitudinal outer side of the covering portion and covering the surface of the lateral plug peripheral wall, and solder tails bent from the top of the contact wall.

8. The self-locking board-to-board connector assembly according to claim 7, wherein the resilient contact arm includes a resilient main arm formed by bending and extending from the fixing portion, an inner contact portion projecting from a free end of the resilient main arm toward the plug receiving cavity, and a guide portion opening from a top of the inner contact portion to a longitudinally outer side.

9. The self-locking board-to-board connector assembly according to claim 8, wherein said contact walls contact said inner contacts to make electrical continuity when said plug is inserted into said receptacle.

10. The self-locking board-to-board connector assembly of claim 9, wherein the top end of the inner recess of the header body is recessed downward to form a lower recess.

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