CN203481542U - Electric connector - Google Patents

Abstract

The utility model discloses an electrical connector, which comprises an insulating body with a base, terminals held in the insulating body, and a metal shell shielded outside the insulating body; a grounding shell is arranged on the metal shell, and the grounding shell includes a The welding plate held by the shell and the elastic arm bent and extended by the welding plate and crimped with the abutting circuit board, the bending tendency of the crimping portion of the terminal is consistent with the bending tendency of the elastic arm. The electrical connector solves the problem that the metal shell is too thin, and the stamping grounding pin is easy to cause damage to the metal shell; at the same time, the elastic arm of the grounding shell contacts the conductive sheet on the circuit board in the form of crimping to form a ground and enhance electromagnetic shielding effect; in addition, the bent portion of the terminal will not touch the grounding shell during crimping.

Description

electrical connector

【Technical field】

The utility model discloses an electric connector, in particular to a universal serial bus interface electric connector.

【Background technique】

An existing USB socket electrical connector includes an insulating body, a conductive terminal held in the insulating body and crimped on a circuit board, a metal shell shielded outside the insulating body, and a metal shell covering the insulating body and the metal shell. Insulating housing. This type of crimping socket connector is often equipped with a metal shielding shell assembled outside the insulating shell. The metal shielding shell is usually provided with elastic arms, and the elastic arms can be elastically deformed to be crimped to the circuit board for grounding. .

In the prior art, such a press-fit USB electrical connector has a thin metal shell covering the insulating body, and the grounding pin is directly punched out on the metal shell, which may easily cause problems such as cracking of the metal shell or instability of the grounding pin. In addition, this type of crimping USB electrical connector has a shielding shell assembled outside the metal shell, but it is prone to problems such as contacting the shielding shell when the conductive terminal is pressed down or plastic deformation of the conductive terminal. the

Therefore, there is a need for an improved electrical connector with good grounding effect, stable structure and convenient assembly. the

【Content of utility model】

The purpose of the utility model is to provide an electrical connector, which has the characteristics of good grounding function, stable structure and convenient assembly. the

In order to achieve the purpose of the above-mentioned utility model, the utility model adopts the following technical solutions: an electrical connector, including an insulating body with a base, terminals held in the insulating body, and a metal shell covering the outside of the insulating body; the metal shell A grounding shell is provided on the grounding shell. The grounding shell includes a welding plate fixed to the metal shell and an elastic arm bent and extended from the welding plate and crimped with the abutting circuit board. The bending tendency of the crimping part of the terminal is consistent with the elastic arm The bending trend is consistent. the

Compared with the prior art, the electrical connector of the utility model has the following beneficial effects: the grounding shell is assembled on the outside of the metal shell, and the free ends of the terminals are overlapped in the resisting groove thicker than the welding plate of the grounding shell, avoiding the terminal When pressed down, the bent part touches the grounded shell. the

FIG. 1 is a schematic view of the electrical connector of the present invention assembled on the housing of the electronic equipment and the circuit board. the

Fig. 2 is a three-dimensional assembled view of the electrical connector of the present invention. the

Fig. 3 is a three-dimensional assembled view of Fig. 2 viewed from another angle. the

Fig. 4 is a three-dimensional exploded view of the electrical connector, the housing of the electronic equipment and the circuit board of the present invention. the

FIG. 5 is a schematic diagram of the assembly of the grounding shell and the metal shell of the electrical connector of the present invention. the

FIG. 6 is a schematic diagram of the assembly of the grounded case and the metal case viewed from another perspective in FIG. 5 . the

Fig. 7 is a cross-sectional view of the electric connector, electronic equipment housing, circuit board and rubber ring along the line A-A in Fig. 1 of the present invention. the

【Description of main component symbols】

100 Electrical Connector 1 Insulation Body

11 Base 110 First Clamping Groove

111 The first clamping part 112 The second clamping part

113 Second clamping groove 12 Tongue plate

121 Storage Tank 2 Terminals

21 Contact part 22 Connection part

23 crimping part 231 free end

232 Bend Arm 3 3 Metal Case

31 Top wall 310 Recessed joint

311 The first clamping foot 32 Side wall

321 Second clamping foot 322 Fin

33 Bottom wall 331 Depression

4 Grounded shell 41 Welding plate

410 ridge 42 elastic arm

421 Bending arm 422 End

5 Sealing ring 51 Frame

511 Holding block 52 Inserting part

520 Holding slot 521 Resisting slot

522 Rubber Seat 6 Rubber Ring

200 Electronic equipment housing 201 Tablet part

2010 Holding Hole 2011 Holding Hole

202 Accommodating frame 2020 Through hole

2021 Convex Hull 2022 Accommodating Slot

203 Opening 300 Circuit board

The following specific embodiments will further illustrate the utility model in conjunction with the above-mentioned accompanying drawings. the

1 to 8, the electrical connector 100 of the present invention is a universal serial bus interface electrical connector assembled on the housing 200 of the electronic device. The electrical connector 100 is fixed on the circuit board 300, including An insulating body 1, a number of terminals 2 accommodated in the insulating body 1, a metal shell 3 covered outside the insulating body 1, a grounding shell 4 fixed on the lower surface of the metal shell 3, and a sealing ring 5 wrapped around the port of the metal shell 3 . A rubber ring 6 is provided between the electronic device casing 200 and the circuit board 300 . For the convenience of description, reference will be made to FIG. 2 below when referring to up, down, left, and right, wherein the butt end of the electrical connector 100 and the mating connector is the front end, and the other end is the rear end. the

Referring to FIG. 3 , FIG. 6 and FIG. 7 , the insulating body 1 includes a base 11 and a tongue 12 extending forward from the base 11 . The top rear side of the base 11 is provided with a first clamping groove 110, and a pair of first clamping parts 111 are provided at the end close to the tongue plate 12 on both sides of the bottom, and a pair of second clamping parts are provided at the end far away from the tongue plate 12. part 112 , and a pair of second clamping grooves 113 are dug at the bottom of the base 11 , which cooperate with corresponding structures on the metal shell 3 to realize the holding of the insulating body 1 and the metal shell 3 . The tongue plate 12 is provided with a plurality of receiving grooves 121 for receiving the terminals 2 . the

Referring to FIGS. 6 to 8 , the terminal 2 includes a contact portion 21 , a connecting portion 22 bent downward from one end of the contact portion 21 , and a crimping portion 23 fixed to the circuit board 300 by crimping. The contact portions 21 are arranged in parallel and fixed in the receiving groove 121 of the insulating housing 1 . The connecting portion 22 is fixed in the base portion 11 of the insulating housing 1 . The crimping portion 23 is bent forward from one end of the connecting portion 22 , and has a free end 231 and a bending arm 232 crimped with a conductive piece (not labeled) on the circuit board 300 . the

Referring to FIG. 2 to FIG. 7 , the metal casing 3 includes a top wall 31 , a bottom wall 33 opposite to the top wall 31 , and a side wall 32 connecting the top wall 31 and the bottom wall 33 . A front end of the top wall 31 is punched to form a pair of concave joints 310 . A rear end of the top wall 31 is bent and extended inward to form a first clamping leg 311 . The first clamping leg 311 is fixed in the first clamping groove 110 of the base 11 . Fins 322 are punched out on the pair of sidewalls 32 respectively, and the rear ends of the fins 322 are bent downwards to form a second clamping leg 321 . The second clamping foot 321 is clamped in the second clamping portion 112. One end of the fin 322 along the mating direction is connected to the side wall 32 and the other end is tilted outward. The rear edge of the bottom wall 33 is punched to form a pair of recessed parts 331 , and the recessed parts 331 are clamped in the second clamping groove 113 of the insulating body 1 . the

Referring to FIG. 2 to FIG. 5 , the grounding shell 4 includes a welding plate 41 and a pair of elastic arms 42 with one end connected to both sides of the rear end of the welding plate 41 . The welding plate 41 is laser welded on the middle part of the bottom wall 33 of the metal casing 3 . The welding plate 41 is substantially rectangular and has a pair of protruding strips 410 extending horizontally forward on the front edge thereof. Referring to FIG. 4 and FIG. 5 , the elastic arm 42 protrudes downward as a whole and extends along the insertion direction, including a bending arm 421 and an end portion 422 connected to one end of the bending arm 421 . The bending arms 421 are formed by bending downwards and extending upwards from the rear end edges on both sides of the welding plate 41 . The bending arm 421 contacts the conductive sheet on the circuit board 300 in a crimping manner to form a ground. Referring to FIG. 3 , the elastic arms 42 and the terminals 2 are horizontally arranged sequentially in the left and right directions, and the elastic arms 42 are distributed outside the terminals 2 and suspended below the metal casing 3 . The bending tendency of the bending arm 421 is consistent with the bending tendency of the crimping portion 23 of the terminal 2 . the

Referring to FIG. 6 and FIG. 7 , the sealing ring 5 is made of rubber and is roughly in the shape of a rectangular ring. It has a frame body 51 hollowed out in the middle and an insertion portion 52 formed horizontally extending from the bottom of the frame body 51 . The two sides of the frame body 51 extend and protrude with locking blocks 511 . The lower surface of the inserting part 52 is provided with a number of abutment grooves 521 for accommodating the free ends 231 of the terminals 2 and rubber seats 522 separating the abutment grooves 521, wherein two rubber seats 522 are partially cut and arranged along the insertion direction. A pair of locking slots 520 are formed. the

Referring to FIG. 1 , FIG. 6 and FIG. 7 , the electronic device casing 200 includes a flat plate portion 201 and a receiving frame 202 connected with the flat plate 201 . The flat plate portion 201 is generally in the shape of a long and narrow rounded rectangle, and a receiving hole 2010 penetrating with the receiving frame 202 is formed in the middle by stamping. Two sides of the accommodating hole 2010 are provided with locking holes 2011 for locking with the locking blocks 511 of the sealing ring 5 . An opening 203 for fixing the circuit board 300 is defined at the bottom of the receiving frame 202 . The opening 203 and the abutting groove 521 of the sealing ring 5 form a receiving groove 2022 to prevent the terminal 2 from being pressed down excessively. The bottom of the through hole 2020 is provided with a pair of protrusions 2021 engaged with the locking groove 520 of the sealing ring 5 . the

In the case that the thickness of the metal shell 3 is too thin to be stamped to form grounding pins, a grounding shell 4 is provided to ensure the grounding effect; at the same time, the thickness of the rubber at the bottom of the resisting groove 521 is thicker than that of the welding plate of the grounding shell 4 41 thick, the free end 231 of the terminal 2 overlaps in the abutment groove 521 and can slide back and forth in the accommodation groove 2022 formed by the opening 203 and the abutment groove 521, ensuring that the grounding shell 4 will not be touched when pressed down. the

The above is only one embodiment of the utility model, not all of the implementation modes. Any equivalent changes to the technical solution of the utility model adopted by those of ordinary skill in the art by reading the specification of the utility model are all equivalent changes of the utility model. covered by the claims. the

Claims (10)

1. An electrical connector, comprising an insulating body with a base, a terminal held in the insulating body and having a crimping portion, and a metal shell shielded outside the insulating body; it is characterized in that: the metal shell is provided with a grounding The shell, the ground shell includes a welding plate fixed to the metal shell and an elastic arm bent and extended from the welding plate and crimped with the abutting circuit board. The bending tendency of the crimping part of the terminal is related to the bending tendency of the elastic arm unanimous. the 2. The electrical connector according to claim 1, wherein the metal housing comprises a top wall and a bottom wall oppositely disposed, and the soldering plate of the grounding housing is fixed on the bottom wall of the metal housing. the 3 . The electrical connector as claimed in claim 2 , wherein the elastic arm is formed by bending downwards and extending upwards from rear end edges on both sides of the soldering plate. 4 . the 4 . The electrical connector according to claim 3 , wherein there are two elastic arms, and the crimping portions of the terminals are sequentially arranged in the left and right directions and located between the two elastic arms. the 5 . The electrical connector according to claim 4 , wherein the elastic arms are distributed outside the terminals, and the crimping parts of the elastic arms and the terminals are suspended below the bottom wall of the metal housing. 6 . the 6 . The electrical connector according to claim 1 , further comprising a sealing ring sleeved on the plug-in end of the electrical connector to prevent dust and water. 7 . the 7 . The electrical connector as claimed in claim 6 , wherein the sealing ring has a hollow frame and an insertion portion extending horizontally from the bottom of the frame. 7 . the 8. The electrical connector according to claim 7, wherein one end of the terminal is a contact portion, and the other end is a free end, and a plurality of abutting grooves for accommodating the free ends of the terminals are provided on the outside of the insertion portion, and the The groove bottom rubber thickness of the abutment groove is thicker than the welded plate of the grounded case. the 9. The electrical connector according to claim 7, characterized in that: the electrical connector is assembled in the housing of the electronic equipment, the housing of the electronic equipment includes a receiving frame, and the two sides of the frame body extend and protrude with cards As for the holding block, two sides of the port of the accommodating frame are provided with holding holes for holding each other with the holding block. the 10. The electrical connector according to claim 1, characterized in that: the electrical connector is set in the housing of the electronic equipment, and a rubber ring for dustproof and waterproof is provided between the housing of the electronic equipment and the circuit board . the

Images