Plug connector

Abstract

The utility model discloses a plug connector, which comprises a plug body, plug terminals fixedly held on the plug body and plug protection supports located at two longitudinal ends of the plug body, the plug body is provided with two side walls extending along the longitudinal direction and two end walls connected to the two side walls, and the plug protection supports are fixedly held on the end walls. The plug terminal comprises a first terminal and a second terminal which are integrally formed on the side wall in an injection molding mode, the first terminal and the second terminal on each side wall are arranged at intervals in the longitudinal direction, the first terminal is provided with a first contact groove located on the transverse outer side of the side wall, and the second terminal is provided with a second contact groove located on the transverse inner side of the side wall. Namely, the first contact groove and the second contact groove are respectively arranged on two transverse sides of the side wall and are arranged in a staggered manner in the longitudinal direction. The first terminal and the second terminal are simultaneously formed by injection molding, so that the bonding strength with the plug body is improved, and the overall strength of the plug connector is further ensured.

Description

Technical Field

[0001] The utility model relates to the technical field of board-to-board connectors, and particularly relates to a plug connector with relatively high overall strength. Background Art

[0002] An electrical connector conducts electrical connection and signal transmission between devices, components, and systems, and is a basic component necessary for constituting a complete system. Currently, electrical connectors are widely used in various electronic products. A board-to-board connector (abbreviated as BTB) is used to electrically connect two parallel circuit boards, and generally includes a plug connector and a socket connector that cooperate with each other. The plug connector and the socket connector respectively include an insulating body and conductive terminals. The insulating body mainly functions to insulate and position the conductive terminals, and the conductive terminals mainly function to conduct electricity. Currently, the plug connector is provided with double rows of plug terminals. When the number of terminals in the layout is relatively high, the double rows of plug terminals require a large space, thereby reducing the overall strength of the plug connector. At the same time, the plug terminals are only provided with contact grooves on the outer side of the side wall, and the pulling force provided by them is relatively small, which is not conducive to the application of the board-to-board connector.

[0003] Therefore, it is desired to propose a new plug connector to overcome the above defects. Summary of the Utility Model

[0004] The purpose of the utility model is to provide a plug connector, in which the plug terminals are integrally injection-molded on the plug body.

[0005] To achieve the above purpose, the utility model adopts the following technical scheme: A plug connector includes a longitudinally extended plug body, plug terminals fixed on the plug body, and plug protection brackets located at the longitudinal two ends of the plug body. The plug body is provided with two side walls extending longitudinally and two end walls connecting the two side walls, and the plug protection brackets are fixed on the end walls. The plug terminals include a first terminal and a second terminal integrally injection-molded on the side walls. The first terminal and the second terminal on each side wall are arranged at intervals longitudinally. The first terminal is provided with a first contact groove located on the lateral outer side of the side wall, and the second terminal is provided with a second contact groove located on the lateral inner side of the side wall, that is, the first contact groove and the second contact groove are respectively arranged on the two lateral sides of the side wall and are staggered longitudinally.

[0006] In a preferred embodiment, the first terminal is provided with a first inner wall contact portion located on the inner wall surface of the side wall, a first outer wall contact portion located on the outer wall surface of the side wall, and a first connecting portion connected to the top ends of the first inner wall contact portion and the first outer wall contact portion, the first connecting portion is located at the top end of the side wall, and the first contact groove is located on the first outer wall contact portion.

[0007] In a preferred embodiment, the second terminal is provided with a second inner wall contact portion located on the inner wall surface of the side wall, a second outer wall contact portion located on the outer wall surface of the side wall, and a second connecting portion connected to the top ends of the second inner wall contact portion and the second outer wall contact portion, the second connecting portion is located at the top end of the side wall, and the second contact groove is located on the second inner wall contact portion.

[0008] In a preferred embodiment, the first terminal is provided with a first welding portion extending laterally outward from the bottom of the first inner wall contact portion, and the second terminal is provided with a second welding portion extending laterally inward from the bottom of the second inner wall contact portion, and the first welding portion and the second welding portion on each side wall extend in opposite directions in the laterally direction.

[0009] In a preferred embodiment, the side walls and the end walls are arranged to form a plug slot, and the plug body is provided with a longitudinal convex strip extending upward from the bottom of the plug slot and a plurality of openings located on both sides of the convex strip in the lateral direction, the openings on both sides of the convex strip are staggered in the longitudinal direction, and the second welding portion extends into the opening.

[0010] In a preferred embodiment, a lateral projection of the first connecting portion is located on the first welding portion, and a lateral projection of the second connecting portion is located outside the second welding portion.

[0011] In a preferred embodiment, the second terminal is provided with an embedded portion extending outwardly from the bottom of the second outer wall contact portion in a transverse direction, the embedded portion is embedded in the side wall, and the transverse length of the embedded portion is smaller than the transverse length of the first welding portion.

[0012] In a preferred embodiment, in the same transverse direction of the plug connector, the two side walls are respectively provided with the first terminal and the second terminal.

[0013] In a preferred embodiment, the plug protection bracket is integrally injection-molded on the end wall of the plug body, and the plug protection bracket covers the end wall and at least a portion of the side wall.

[0014] In a preferred embodiment, the plug protection bracket is formed by drawing a metal part and is provided with a top surface shielding portion covering the top surface of the end wall, side surface shielding portions bent and extending downward from the lateral two sides of the top surface shielding portion, and an outer wall shielding portion bent and extending downward from the longitudinal outer side of the top surface shielding portion. A seamless connection is formed among the top surface shielding portion, the side surface shielding portions, and the outer wall shielding portion.

[0015] Compared with the prior art, the present utility model has the following beneficial effects: The plug terminal includes a first terminal and a second terminal integrally injection-molded on the side wall. The first terminal and the second terminal on each side wall are arranged at intervals longitudinally. The first terminal is provided with a first contact groove located on the lateral outer side of the side wall, and the second terminal is provided with a second contact groove located on the lateral inner side of the side wall, that is, the first contact groove and the second contact groove are respectively arranged on the lateral two sides of the side wall and are staggered longitudinally. The dislocation in the structure of the plug terminal ensures the pulling-out force. At the same time, the first terminal and the second terminal are injection-molded simultaneously, reducing the complexity of the manufacturing process, being beneficial to improving the bonding strength with the plug body, and thus ensuring the overall strength of the plug connector. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 is a perspective view of a plug connector in a preferred embodiment of the present utility model.

[0017] Figure 2 is Figure 1 a top view of the plug connector shown.

[0018] Figure 3 is Figure 1 a bottom view of the plug connector shown.

[0019] Figure 4 is Figure 1 an exploded view of the plug connector shown.

[0020] Figure 5 is Figure 1 a front view of the plug terminal in the plug connector shown.

[0021] Figure 6 is a top view of a socket connector in a preferred embodiment of the present utility model.

[0022] Figure 7 is Figure 6 an exploded view of the socket connector shown.

[0023] Figure 8 is Figure 7 a perspective view of the socket protection bracket in the socket connector shown.

[0024] Figure 9 isFigure 8 A perspective view of the socket protection bracket shown from another angle.

[0025] Figure 10 is Figure 6 A cross-sectional view of the socket connector shown. Detailed implementation manner

[0026] Please refer to Figures 1 to 10 As shown, a preferred embodiment of the present utility model discloses a board-to-board connector, which includes a plug connector 100 and a socket connector 200 that cooperate with each other. The plug connector 100 includes a longitudinal plug body 10, plug terminals 20 held on the plug body 10, and plug protection brackets 30 located at the longitudinal two ends of the plug body 10. The plug body 10 is provided with two side walls 11 extending longitudinally and two end walls 12 connecting the two side walls 11. The plug terminals 20 are held on the side walls 11, and the plug protection brackets 30 are held on the end walls 12.

[0027] Combined with Figure 5 As shown, the plug terminal 20 includes a first terminal 21 and a second terminal 22 integrally injection-molded on the side wall 11. The first terminals 21 and the second terminals 22 on each side wall 11 are arranged at intervals longitudinally. At the same time, when observing from the same transverse direction of the plug connector 100, the two side walls 11 are respectively provided with the first terminal 21 and the second terminal 22.

[0028] The first terminal 21 is provided with a first inner wall contact portion 211 located on the inner wall surface of the side wall 11, a first outer wall contact portion 212 located on the outer wall surface of the side wall 11, a first connection portion 213 connecting the top ends of the first inner wall contact portion 211 and the first outer wall contact portion 212, and a first welding portion 214 extending transversely out of the plug body 10 from the bottom of the first inner wall contact portion 211. The first connection portion 213 is located at the top end of the side wall 11. The first inner wall contact portion 211, the first connection portion 213, and the first outer wall contact portion 212 together form a first inverted U-shaped portion for contacting the U-shaped elastic portion 52 of the plug terminal 50 of the socket connector 200.

[0029] The second terminal 22 is provided with a second inner wall contact portion 221 located on the inner wall surface of the side wall 11, a second outer wall contact portion 222 located on the outer wall surface of the side wall 11, a second connecting portion 223 connecting the tops of the second inner wall contact portion 221 and the second outer wall contact portion 222, and a second welding portion 224 extending transversely inwards from the bottom of the second inner wall contact portion 221. The second connecting portion 223 is located at the top of the side wall 11. The second inner wall contact portion 221, the second connecting portion 223 and the second outer wall contact portion 222 together form a second inverted U-shaped portion for contacting the U-shaped elastic portion 52 of the plug terminal 50 of the socket connector 200.

[0030] Further, the first inner wall contact portion 211 has a smooth contact surface, and the first outer wall contact portion 212 has a first contact groove 215; the second outer wall contact portion 222 has a smooth contact surface, and the second inner wall contact portion 221 has a second contact groove 225. At the same time, the first contact groove 215 is located laterally outside the side wall 11, and the second contact groove 225 is located laterally inside the side wall 11. That is, on the same side wall 11, the first contact groove 215 and the second contact groove 225 are respectively arranged on the two lateral sides of the side wall 11 and are staggered in the longitudinal direction.

[0031] The first welding portion 214 and the second welding portion 224 on each side wall 11 extend in opposite directions transversely, and the first welding portion 214 and the second welding portion 224 can be fixedly installed on a circuit board (not shown) electrically connected to the plug connector 100; that is, the first welding portion 214 of the first terminal 21 and the second welding portion 224 of the second terminal 22 are respectively located on the two lateral sides of the side wall 11, realizing a bilateral layout of the welding portions of the plug terminals 20 and solving the short-circuit problem when the distance between the plug terminals 20 on the same side is small.

[0032] Specifically, the side wall 11 and the end wall 12 enclose to form a plug slot 13. The plug body 10 is provided with a longitudinal protrusion 130 protruding upwards from the bottom of the plug slot 13 and several openings 131 located on the two lateral sides of the protrusion 130. The openings 131 on both sides of the protrusion 130 are staggered in the longitudinal direction, and the second welding portion 224 extends into the openings 131 to facilitate the observation and operation of the second welding portion 224.

[0033] The structures of the first terminal 21 and the second terminal 22 are also different in the following points: the transverse projection of the first connection portion 213 is located on the first welding portion 214, and the transverse projection of the second connection portion 223 is located outside the second welding portion 224. The second terminal 22 is further provided with an embedded portion 226 extending outwardly from the bottom of the second outer wall contact portion 222 along the transverse direction of the plug body 10, the embedded portion 226 is embedded in the side wall 11, and the transverse length of the embedded portion 226 is less than the transverse length of the first welding portion 215.

[0034] The plug protection bracket 30 is integrally injection molded on the end wall 12 and covers the end wall 12 and at least a portion of the side wall 11, thereby improving the strength of the plug body 10 and preventing the plug body 10 from being damaged when the plug connector 100 is plugged in or out. The plug protection bracket 30 is drawn and molded by metal parts and is provided with a top surface shielding portion 31 covering the top surface of the end wall 12, a side shielding portion 32 extending downwardly from both lateral sides of the top surface shielding portion 31 and an outer wall shielding portion 33 extending downwardly from the longitudinal outer side of the top surface shielding portion 32. The side shielding portion 32 at least partially covers the lateral outer wall surface of the end 12, and the outer wall shielding portion 33 covers the longitudinal outer wall surface of the end 12, and the top surface shielding portion 31, the side shielding portion 32 and the outer wall shielding portion 33 are seamlessly connected to each other.

[0035] The plug protection bracket 30 is further provided with an inner wall shielding portion 34 that is bent downward and extends from the longitudinal inner side of the top shielding portion 32, and an extension portion 35 that extends laterally from the bottom edge of the side shielding portion 32. The inner wall shielding portion 34 at least partially covers the longitudinal inner wall surface of the end portion 12 and does not extend outwardly beyond the longitudinal inner wall surface of the end portion 12, and the extension portion 35 can be fixedly mounted on a circuit board (not shown) that is electrically connected to the plug connector 100.

[0036] See also Figures 6 to 10 As shown, the socket connector 200 includes a longitudinally long socket body 40, a socket terminal 50 fixed on the socket body 40, and a socket protection bracket 60 located at both longitudinal ends of the socket body 50. The socket body 40 is provided with a central island portion 41 extending in the longitudinal direction, two side portions 42 located at both lateral sides of the island portion 41, and two end portions 43 connected to the two side portions 42. The island portion 41, the two side portions 42, and the two end portions 43 jointly define a socket slot 44, that is, the island portion 41 is located in the socket slot 44, and the socket slot 44 can be inserted into the plug connector 100.

[0037] Combination Figure 10As shown, the socket terminals 50 are arranged in two rows longitudinally and assembled and fixed to the side portion 42 or the island portion 41 of the socket body 40. In this embodiment, the socket terminals 50 include a forward terminal 501 and a reverse terminal 502 with the same structure, and the forward terminals 501 and the reverse terminals 502 in each row of the socket terminals 50 are arranged at intervals longitudinally. Specifically, the socket terminals 50 are provided with a fixing portion 51 fixed to the side portion 12 or the island portion 11, a U-shaped elastic portion 52 extending from the top of the fixing portion 51 into the socket slot 44, and a welding leg 53 extending transversely from the bottom of the fixing portion 51. The welding leg 53 can be fixedly installed on a circuit board (not shown) electrically connected to the socket connector 200.

[0038] The island portion 41 is provided with a longitudinally extending slot 410 penetrating vertically. The fixing portion 51 of the forward terminal 501 is fixed to the side portion 42, and the welding leg 53 of the forward terminal 501 extends transversely outward from the socket body 40; the fixing portion 51 of the reverse terminal 502 is fixed to the island portion 41, and the welding leg 53 of the reverse terminal 502 extends transversely inward into the slot 410.

[0039] The U-shaped elastic portion 52 is provided with a locking portion 54 on the side adjacent to the fixing portion 51 and a contact arm 55 on the side away from the fixing portion 51. The locking portion 54 protrudes into the socket slot 44. Therefore, the locking portions 54 of the forward terminals 501 and the reverse terminals 502 in each row of the socket terminals 50 are arranged staggered longitudinally. When the plug connector 100 is mated to the socket connector 200, the locking portion 54 of the forward terminal 501 is snapped into the first contact groove 215 of the first terminal 21, and the locking portion 54 of the reverse terminal 502 is snapped into the second contact groove 225 of the second terminal 22. The mating of the above plug terminals 20 and socket terminals 50 realizes a structural offset to ensure the pulling force, and at the same time, there is a good feel rate when snapping.

[0040] Combined Figure 8 and Figure 9 As shown, the socket protection bracket 60 includes an end protection bracket 70 fixed to the end portion 43 and an island protection bracket 80 separately provided from the end protection bracket 70, so as to improve the overall strength of the socket connector 200. The end protection bracket 70 is provided with an integrally formed end reinforcing piece and a side reinforcing piece. The end reinforcing piece covers the end portion 43, and the side reinforcing piece is connected to the transverse two ends of the end reinforcing piece and at least partially covers the side portion 42.

[0041] The end reinforcing piece is provided with an end top plate portion 71 covering the top surface of the end portion 43, an end side plate portion 72 extending downward and bent from the longitudinal outer side of the end top plate portion 71, and elastic clamping portions 73 extending inward from the transverse two sides of the end side plate portion 72. The end side plate portion 72 shields the outer wall surface of the end portion 42 and is provided with an end welding piece 721 at its bottom edge. The end welding piece 721 can be fixedly installed on a circuit board electrically connected to the socket connector 200. The elastic clamping portions 73 extend into the socket slot 44 to clamp the side shielding portion 32 of the plug protection bracket 30 of the plug connector 100.

[0042] The side wall reinforcing piece is provided with a side top plate portion 74 covering the top surface of the side portion 42 and a side side plate portion 75 extending downward and bent from the transverse outer side of the side top plate portion 74. The side top plate portion 74 is connected to the transverse two ends of the end top plate portion 71, and the side side plate portion 75 at least partially shields the outer wall surface of the side portion 42. The end protection bracket 70 is further provided with a guiding portion 76 drawn and formed from the transverse inner sides of the side top plate portion 71 and the end top plate portion 74. The guiding portion 76 extends downward and obliquely into the socket slot 44 for guiding the insertion of the plug connector 100 when the socket connector 200 and the plug connector 100 are plugged together.

[0043] The island protection bracket 80 is provided with a bottom plate portion 81 at the bottom of the socket slot 44, an island shielding portion 82 drawn and formed upward from the longitudinal inner side of the bottom plate portion 81, an end fixing portion 83 bent and extended from the longitudinal outer side of the bottom plate portion 81, two clamping arms 84 extending along the transverse direction from the bottom plate portion 81 to the side portion 42, and two island welding pieces 85 extending along the longitudinal direction outward from the bottom plate portion 81. The island shielding portion 82 covers the longitudinal two sides of the island portion 41 to enhance the overall strength of the island portion 41. The end fixing portion 83 is held in the end portion 43 and is shielded by the end protection bracket 70. Specifically, the end top plate portion 71 covers above the end fixing portion 83.

[0044] In the transverse direction, the two clamping arms 84 are located on the transverse two sides of the island shielding portion 82. In the longitudinal direction, the two clamping arms 84 are located on the longitudinal two sides of the socket terminal 50 and on the longitudinal inner sides of the elastic clamping portions 73 to clamp the side shielding portion 32 of the plug protection bracket 30 of the plug connector 100. At the same time, the two island welding pieces 85 extend to the transverse two sides of the end welding piece 721, and the island welding pieces 85 and the end welding piece 721 are welded to the same welding pad on the circuit board. Therefore, when the plug connector 100 is mated with the socket connector 200, the clamping arms 84 and the elastic clamping portions 73 simultaneously contact the plug protection bracket 30 to shunt in parallel to improve the current-carrying capacity, that is, to achieve high-strength protection and high current-carrying capacity of the socket connector 200 in a smaller space.

[0045] When the plug connector 100 is mated with the socket connector 200, the first inverted U-shaped portion of the first terminal 21 contacts the U-shaped elastic portion 52 of the forward terminal 501, and the second inverted U-shaped portion of the second terminal 22 contacts the U-shaped elastic portion 52 of the reverse terminal 502; the first contact groove 215 of the first terminal 21 is engaged with the locking portion 54 of the forward terminal 501, and the second contact groove 225 of the second terminal 22 is engaged with the locking portion 54 of the reverse terminal 502: the pulling force required for pulling out the board-to-board connector is increased, so that the board-to-board connector will not loosen or have abnormal instantaneous disconnection without being pressed by foam, thus preventing the problem of falling off in a special environment. At the same time, the clamping arm 84 of the socket protection bracket 60 and the elastic clamping portion 73 simultaneously contact the side shielding portion 32 of the plug protection bracket 30 to shunt in parallel to improve the current-carrying capacity, that is, high-strength protection and high current-carrying capacity of the board-to-board connector are achieved in a small space.

[0046] In the present utility model, the plug terminal 20 includes a first terminal 21 and a second terminal 22 integrally injection-molded on the side wall 11, and the first terminal 21 and the second terminal 22 on each side wall 11 are longitudinally spaced apart. The first terminal 21 is provided with a first contact groove 215 on the lateral outer side of the side wall 11, and the second terminal 22 is provided with a second contact groove 225 on the lateral inner side of the side wall 11, that is, the first contact groove 215 and the second contact groove 225 are respectively arranged on the two lateral sides of the side wall 11 and are longitudinally staggered. The misalignment in the structure of the plug terminal 20 ensures the pulling force. At the same time, the first terminal 21 and the second terminal 22 are injection-molded simultaneously, reducing the complexity of the manufacturing process, being beneficial to improving the bonding strength with the plug body 10, and further ensuring the overall strength of the plug connector 100.

[0047] In summary, the above are only the preferred embodiments of the present utility model, and the scope of the present utility model should not be limited thereby. That is, all simple equivalent changes and modifications made according to the claims and the content of the specification of the present utility model should still fall within the scope covered by the patent of the present utility model.

Claims

1. A plug connector, comprising a longitudinally extending plug body, plug terminals held on the plug body, and plug protection brackets located at the longitudinal two ends of the plug body, the plug body being provided with two side walls extending longitudinally and two end walls connecting the two side walls, the plug protection brackets being held on the end walls; characterized in that: The plug terminal includes a first terminal and a second terminal integrally injection-molded on the side wall. The first terminal and the second terminal on each side wall are arranged at intervals longitudinally. The first terminal is provided with a first contact groove located laterally outside the side wall, and the second terminal is provided with a second contact groove located laterally inside the side wall, that is, the first contact groove and the second contact groove are respectively arranged on the two lateral sides of the side wall and are staggered longitudinally.

2. The plug connector according to claim 1, characterized in that: The first terminal is provided with a first inner wall contact portion located on the inner wall surface of the side wall, a first outer wall contact portion located on the outer wall surface of the side wall, and a first connecting portion connecting the top ends of the first inner wall contact portion and the first outer wall contact portion. The first connecting portion is located at the top end of the side wall, and the first contact groove is located on the first outer wall contact portion.

3. The plug connector according to claim 2, characterized in that: The second terminal is provided with a second inner wall contact portion located on the inner wall surface of the side wall, a second outer wall contact portion located on the outer wall surface of the side wall, and a second connecting portion connecting the top ends of the second inner wall contact portion and the second outer wall contact portion. The second connecting portion is located at the top end of the side wall, and the second contact groove is located on the second inner wall contact portion.

4. The plug connector according to claim 3, characterized in that: The first terminal is provided with a first welding portion extending laterally outward from the bottom of the first inner wall contact portion, and the second terminal is provided with a second welding portion extending laterally inward from the bottom of the second inner wall contact portion. The first welding portion and the second welding portion on each side wall extend in opposite lateral directions.

5. The plug connector according to claim 4, characterized in that: The side wall and the end wall enclose to form a plug slot. The plug body is provided with a longitudinally protruding rib protruding upward from the bottom of the plug slot and several openings located on the two lateral sides of the rib. The openings on both sides of the rib are staggered longitudinally, and the second welding portion extends into the openings.

6. The plug connector according to claim 4, characterized in that: The projection of the first connecting portion in the lateral direction is located on the first welding portion, and the projection of the second connecting portion in the lateral direction is located outside the second welding portion.

7. The plug connector according to claim 4, characterized in that: The second terminal is provided with a buried portion extending laterally outward from the bottom of the second outer wall contact portion. The buried portion is buried in the side wall, and the lateral length of the buried portion is smaller than the lateral length of the first welding portion.

8. The plug connector according to claim 1, characterized in that: On the same lateral direction of the plug connector, the first terminal and the second terminal are respectively arranged on the two side walls.

9. The plug connector according to claim 1, characterized in that: The plug protection bracket is integrally injection-molded on the end wall of the plug body, and the plug protection bracket covers the end wall and at least part of the side wall.

10. The plug connector according to claim 9, characterized in that: The plug protection bracket is formed by drawing a metal part and is provided with a top surface shielding portion covering the top surface of the end wall, side shielding portions bending and extending downward from the two lateral sides of the top surface shielding portion, and an outer wall shielding portion bending and extending downward from the longitudinal outer side of the top surface shielding portion. The top surface shielding portion, the side shielding portions and the outer wall shielding portion are seamlessly connected to each other.

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