Board-to-Board Connectors

Abstract

The present invention discloses a board-to-board connector, which includes a first connector and a second connector, wherein the first connector includes a first insulator, a first terminal and a first grounding member, and the second connector includes a second insulator, a plurality of second terminals and a second grounding member, wherein the first grounding member includes a main board, an unlocking piece, a connecting piece connecting the main board and the unlocking piece, and an elastic arm extending downward from the unlocking piece, wherein the unlocking piece protrudes upward from the first insulator, and the elastic arm is provided with a locking portion locked to the second grounding member, and when the unlocking piece is pressed horizontally, the connecting piece is elastically deformed, and the locking portion moves in the opposite direction relative to the unlocking piece and then disengages from the second grounding member. In this way, the snap-fitting retention force of the first connector and the second connector is increased, and the first connector and the second connector can be separated only after the unlocking piece is pressed with force.

Description

Technical Field

[0001] The present invention relates to the technical field of connectors, and in particular to a board-to-board connector with a grounding member. Background Art

[0002] With the rapid development of information technology and the increasing demand for data, a large amount of data transmission has higher and higher requirements for data transmission stability and reliability. The female and male ends of the existing board-to-board connection mainly use the elastic interference force between metal terminals or insulating seats to fix the female and male ends together. The holding force between the female and male ends is very small, and it is easy to fall off under a certain force, and even affect the data transmission function of the female and male ends.

[0003] Therefore, it is necessary to design a new board-to-board connector to solve the above technical problems. Summary of the invention

[0004] An object of the present invention is to provide a board-to-board connector with increased snap-fit ​​retention force.

[0005] To achieve the aforementioned objectives, the present invention adopts the following technical scheme: a board-to-board connector, comprising a first connector and a second connector docked with the first connector, the first connector comprising a first insulator and a plurality of first terminals and a first grounding member respectively arranged on the first insulator, the second connector comprising a second insulator and a plurality of second terminals and a second grounding member respectively arranged on the second insulator, the first terminal being in electrical contact with the second terminal, the first grounding member comprising a main board, an unlocking piece, a connecting piece connecting the main board and the unlocking piece, and an elastic arm extending downward from the unlocking piece, the unlocking piece being vertically arranged and protruding upward from the first insulator, the elastic arm being provided with a locking portion locked to the second grounding member, when the unlocking piece is pressed horizontally, the connecting piece is elastically deformed, and the locking portion moves in the opposite direction relative to the unlocking piece and then disengages from the second grounding member.

[0006] As a further improvement, the connecting piece is U-shaped or V-shaped, one end of the connecting piece is connected to the lower edge of the unlocking piece, and the other end is connected to the main board.

[0007] As a further improvement, the locking portion is formed by folding back upward from the lower edge of the elastic arm, and the locking portion is locked upward to the second grounding member.

[0008] As a further improvement, the second grounding member includes a retaining wall abutting against the locking portion, and the retaining wall is arranged on the outer side of the second insulator.

[0009] As a further improvement, the retaining wall is provided with a notch for accommodating the locking portion.

[0010] As a further improvement, the second grounding member further comprises two opposite wall portions, the retaining wall connects the two wall portions, and the wall portions are also arranged on the outer side surface of the second insulator.

[0011] As a further improvement, the first insulator includes two first ends and a first main body connected between the two first ends, the first terminal is accommodated in the first main body, the first end is provided with a movable groove that passes through the first end up and down, and the unlocking piece and the connecting piece are located in the movable groove.

[0012] A further improvement is that an upper groove is provided on the upper surface of the first main body, and a side groove is provided on the side surface, the first grounding piece includes a side plate extending downwardly from the main board, a side positioning block is provided in the side groove, the main board is located in the upper groove, the side plate is located in the side groove, and the side plate is provided with a positioning hole cooperating with the side positioning block.

[0013] As a further improvement, the first grounding member further includes an inserting piece extending downward from the mainboard, and the first end portion is provided with a slot for the inserting piece to be inserted and fixed.

[0014] As a further improvement, the first end portion further includes a blocking wall extending downward, and the second insulator is located between the blocking walls of the two first end portions.

[0015] The first grounding member of the first connector of the board-to-board connector of the present invention comprises a main board, an unlocking piece, a connecting piece connecting the main board and the unlocking piece, and an elastic arm extending downward from the unlocking piece, wherein the unlocking piece is vertically arranged and protrudes upward from the first insulator, and the elastic arm is provided with a locking portion locked to the second grounding member, and when the unlocking piece is pressed horizontally, the connecting piece is elastically deformed, and the locking portion moves in the opposite direction relative to the unlocking piece and then detaches from the second grounding member. With such a design, the first grounding member and the second grounding member can be automatically locked together, increasing the snap-fit ​​retention force and preventing them from falling off when subjected to a certain external force, and enhancing the mating firmness and electrical contact stability of the first connector and the second connector; the unlocking piece of the first grounding member needs to be pressed with force before the locking portion can release the lock on the second grounding member, and the first connector and the second connector can be separated. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a three-dimensional diagram of the assembled state of the board-to-board connector of the present invention.

[0017] Figure 2 for Figure 1 Cross-sectional view along direction BB.

[0018] Figure 3 for Figure 2 Enlarged view within the circle.

[0019] Figure 4 It is a three-dimensional diagram of the board-to-board connector of the present invention in a disassembled state.

[0020] Figure 5 for Figure 4 Cross-sectional view along DD direction.

[0021] Figure 6 It is a three-dimensional exploded view of the board-to-board connector of the present invention.

[0022] 7A to 7C The three-dimensional diagrams are of the first grounding member of the board-to-board connector of the present invention from three different viewing angles.

[0023] FIG. 8A to FIG. 8B The figures are three-dimensional views of the first grounding member of the board-to-board connector of the present invention from two different perspectives.

[0024] Fig. 9 It is a three-dimensional diagram of the combination of the first grounding member and the second grounding member of the board-to-board connector of the present invention.

[0025] Fig.10 It is a three-dimensional diagram of the first grounding member and the second grounding member of the board-to-board connector of the present invention being separated. DETAILED DESCRIPTION

[0026] See also Figures 1 to 10 As shown, the present invention discloses a board-to-board connector, which includes a first connector 100 and a second connector 200 that can be plugged together with the first connector 100, the first connector 100 is one of the male end and the female end, the second connector 200 is the other of the male end and the female end, and the first connector 100 and the second connector 200 are respectively installed on corresponding circuit boards.

[0027] The first connector 100 includes a first insulator 10, two rows of first terminals 30 and a pair of first grounding members 50, wherein the first terminals 30 and the first grounding members 50 are respectively received in the first insulator 10. The second connector 200 includes a second insulator 20, two rows of second terminals 40 and a pair of second grounding members 60, wherein the second terminals 40 and the second grounding members 60 are respectively received in the second insulator 20.

[0028] The first insulator 10 is a longitudinally extending long strip structure, which includes two longitudinally opposite first ends 11 and a first body 12 connected between the two first ends 11. The first end 11 includes an upper wall 13 and a blocking wall 14 vertically connected to the upper wall 13, and one end of the upper wall 13 away from the first body 12 is connected to the blocking wall 14, and the blocking wall 14 extends downward beyond the upper wall 13.

[0029] The upper wall 13 includes an upper groove 131, two side grooves 132, two side positioning blocks 133, two slots 134, a movable groove 135 and a positioning protrusion 136. The upper groove 131 is provided on the upper surface of the upper wall 13, and the two side grooves 132 are provided on the two outer side surfaces of the upper wall 13 in the transverse direction and are connected to the upper groove 131. The two side positioning blocks 133 are provided one by one at the corners where the corresponding upper groove 131 and the side groove 132 are connected, that is, the side positioning blocks 133 are located in both the upper groove 131 and the side groove 132. Further, a guiding inclined surface 138 is provided on the outer side of the side positioning block 133 for guiding the installation of the first grounding member 50. The two slots 134 are aligned in the transverse direction along the first insulator 10 and are located between the two side positioning blocks 133. Each slot 134 further extends downward from the upper groove 132. Looking downward, the movable groove 135 is T-shaped and passes through the upper wall 13 and the upper groove 132. In the longitudinal direction of the first insulator 10, the movable groove 135 is farther away from the first body 12 than the insertion slot 134. The positioning protrusion 136 is provided on the lower surface of the upper wall 13 and is longitudinally separated from the retaining wall 14.

[0030] The first terminal 30 includes a U-shaped first contact portion 31 and a first soldering leg 32 connected to the first contact portion 31 . The first contact portion 31 is fixed to the first body 12 . The first soldering leg 32 extends out of the first body 12 for soldering to a circuit board.

[0031] The first grounding member 50 is installed one by one on the first end 11 corresponding to the first insulator 10. The first grounding member 50 adopts a bent spring structure to increase the elastic strength and ensure the self-locking function. The first grounding member 50 includes a main board 51, two side boards 52, two plugs 54, an unlocking piece 55, a connecting piece 56 and two elastic arms 57. The main board 51 is in the shape of a horizontal plate, which is accommodated in the upper groove 131 of the first insulator 10 and is restricted from longitudinal movement. The two side boards 52 are bent and extended downward from the two ends of the main board 51 in the horizontal direction. The side boards 52 are provided with positioning holes 520, and the positioning holes 520 also penetrate part of the main board 51. The side boards 52 are accommodated in the corresponding side grooves 132 one by one, and are restricted from longitudinal movement. The side positioning blocks 133 are snapped into the corresponding positioning holes 520 one by one to limit the up and down movement of the first grounding member 50. The inserts 54 are formed by punching the main plate 51 and the side plate 52. The positioning holes 520 are punched holes left after punching. The inserts 54 are inserted downward and fixed in the corresponding slots 134.

[0032] The unlocking piece 55 is a vertical sheet structure, and the unlocking piece 55 partially protrudes upward from the first insulator 10, so that the user can press the unlocking piece 55 longitudinally; the unlocking piece 55 is arranged longitudinally with the main board 51, separated or longitudinally in contact with each other. The connecting piece 56 is U-shaped or V-shaped, and the connecting piece 56 connects the lower edge of the unlocking piece 55 and the outer edge of the main board 51. The connecting piece 56 and the unlocking piece 55 are accommodated in the movable groove 135 of the first insulator 10. Two elastic arms 57 extend downward from the two opposite ends of the unlocking piece 55 in the horizontal direction, and the connecting piece 56 is located between the two elastic arms 57. The lower edge of the elastic arm 57 is provided with a locking portion 58 folded back upward, and the locking portion 58 has a horizontal top surface. When the unlocking piece 55 is longitudinally pressed inward, the connecting piece 56 is deformed, and the elastic arm 57 drives the locking portion 58 to move outward.

[0033] The second insulator 20 is a longitudinally extending strip structure, which includes two longitudinally opposite second ends 21 and a second body 22 connected between the two second ends 21. The second end 21 is provided with a positioning recess 26 aligned with the positioning protrusion 136 of the first insulator 10 in the upper and lower directions. When the first connector 100 and the second connector 200 are connected together, the positioning protrusion 136 is inserted into the positioning recess 26 and is restricted from moving longitudinally and transversely.

[0034] The second terminal 40 includes a second contact portion 41 and a second welding foot 42 connected to the second contact portion 41. The second contact portion 41 is fixed on the second body 22 for electrically contacting the first contact portion 31 of the first terminal 30. The second welding foot 42 extends out of the second body 22 for welding to another circuit board.

[0035] Each second grounding member 60 is formed integrally on the second end 21 of the first insulator 10. Each second grounding member 60 includes two sidewalls 61 opposite to each other in the transverse direction, a retaining wall 62 vertically connecting one end of the two sidewalls 61, and a welding portion 63 extending outwardly from the lower edge of the sidewall 61 and the retaining wall 62. The sidewall 61 and the retaining wall 62 are vertical sheets, respectively attached to the outer side surface of the second end 21. One end of the sidewall 61 is connected to the retaining wall 62, and the other end is provided with a first embedded sheet 611 extending inwardly. The lower edge of the retaining wall 62 is provided with two notches 65 located on both sides of the welding portion 63 in the transverse direction. The inner edge of one side of the notch 65 is bent and extended with a second embedded sheet 651. The first embedded sheet 611 and the second embedded sheet 651 are embedded in the second end 21 to increase the fixing effect of the second grounding member 60 and the second insulator 20.

[0036] When the first connector 100 and the second connector 200 of the board-to-board connector of the present invention are docked together, the first body 11 of the first insulator 10 and the second body 21 of the second insulator 20 are docked together in a concave and convex manner, the positioning protrusion 136 of the first insulator 10 is inserted into the positioning recess 26 of the second insulator 20, and the retaining wall 14 of the first body 11 covers the outer side of the second body 21, so that the second insulator 20 is between the two retaining walls 14; the first contact portion 31 of the first terminal 30 is electrically in contact with the second contact portion 41 of the second terminal 40; the locking portion 58 of the first grounding member 50 is automatically locked in the notch 65 of the retaining wall 62 of the second grounding member 60, and is buckled upward on the retaining wall 62, so that the first grounding member 50 and the second grounding member 60 are automatically locked together, increasing the buckling retention force to prevent them from falling off when subjected to a certain external force, and the first connector 100 and the second connector 200 have enhanced matching firmness and electrical contact stability.

[0037] When the first connector 100 and the second connector 200 need to be separated, the unlocking piece 55 of the first grounding piece 50 is manually pressed longitudinally inwardly, causing the connecting piece 56 to be compressed and deformed, while the elastic arm 57 drives the locking portion 58 to move outward until the locking portion 58 and the retaining wall 62 of the second grounding piece 60 are staggered up and down, and then the first connector 100 and the second connector 200 can be easily separated. The working principle is simple and the operation is easy. Therefore, the unlocking piece 55 needs to be pressed with force before the locking portion 58 can release the lock on the second grounding piece 60, and the first connector 100 and the second connector 200 can be separated. In other embodiments, the unlocking piece can be set to any horizontal pressing method, and the horizontal direction is horizontal or / and vertical.

[0038] Although the preferred embodiments of the present invention have been disclosed for illustrative purposes, those skilled in the art will appreciate that various modifications, additions and substitutions are possible, without departing from the scope and spirit of the invention as disclosed in the accompanying claims.

Claims

1. A board-to-board connector, comprising a first connector and a second connector docked with the first connector, wherein the first connector comprises a first insulator and a plurality of first terminals and a first grounding member respectively disposed on the first insulator, and the second connector comprises a second insulator and a plurality of second terminals and a second grounding member respectively disposed on the second insulator, wherein the first terminal is in electrical contact with the second terminal, Features: The first insulator includes two first ends opposite to each other in the longitudinal direction and a first main body connected between the two first ends, the first end includes an upper wall, the upper wall includes an upper groove, two side grooves and a movable groove, the upper groove is arranged on the upper surface of the upper wall, the two side grooves are arranged on the two outer side surfaces of the upper wall in the horizontal direction and are connected with the upper groove, the movable groove is T-shaped and passes through the upper wall and the upper groove up and down; the first grounding member includes a main board, two side plates, an unlocking plate, a connecting plate and two elastic arms, the main board is in the shape of a horizontal plate and is accommodated in the upper groove of the first insulator, and the two side plates extend downward from the two ends of the main board in the horizontal direction. The unlocking piece is bent and extended and accommodated in the corresponding side groove, the unlocking piece is vertically arranged and protrudes upward from the first insulator, the connecting piece connects the lower edge of the unlocking piece and the outer edge of the main board, and the connecting piece and the unlocking piece are jointly accommodated in the movable groove of the first insulator, the two elastic arms are respectively extended downward from the two opposite ends of the unlocking piece in the horizontal direction, and the connecting piece is located between the two elastic arms, the elastic arm is provided with a locking portion locked to the second grounding piece, when the unlocking piece is pressed horizontally, the connecting piece is elastically deformed, and the locking portion moves in the opposite direction relative to the unlocking piece and then disengages from the second grounding piece.

2. The board-to-board connector according to claim 1, Features: The connecting piece is U-shaped or V-shaped.

3. The board-to-board connector according to claim 1, Features: The locking portion is formed by folding back upward from the lower edge of the elastic arm, and the locking portion is locked upward to the second grounding piece.

4. The board-to-board connector according to claim 1, Features: The second grounding member includes a retaining wall abutting against the locking portion, and the retaining wall is arranged on the outer side of the second insulator.

5. The board-to-board connector according to claim 4, Features: The retaining wall is provided with a notch for accommodating the locking portion.

6. The board-to-board connector according to claim 4, Features: The second grounding member further includes two opposite wall portions, the retaining wall connects the two wall portions, and the wall portions are also arranged on the outer side surface of the second insulator.

7. The board-to-board connector according to claim 1, Features: The first terminal is received in the first body.

8. The board-to-board connector according to claim 7, Features: A side positioning block is arranged in the side groove, and a positioning hole matched with the side positioning block is arranged in the side plate.

9. The board-to-board connector according to claim 7, Features: The first grounding member further comprises an inserting piece extending downward from the main board, and the first end portion is provided with a slot for the inserting piece to be inserted and fixed.

10. The board-to-board connector according to claim 7, Features: The first end portion further includes a blocking wall extending downward, and the second insulator is located between the blocking walls of the two first end portions.

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