TW201824661A - Electrical connector - Google Patents

Abstract

An electrical connector comprises an insulative housing, a contact module accommodated in the insulative housing, and a shell enclosing the insulative housing. The contact module comprises a number of contacts accommodated in the insulative housing, a plastic block fixing the contacts, and a printed circuit board placed on the plastic block. The shell comprises a resisting arm resisted against the printed circuit board for connecting with each other electrically.

Description

Electric connector

The present invention relates to an electrical connector, and more particularly to an electrical connector having a circuit board.

For the prior art, please refer to an electrical connector fixed on a circuit board disclosed in Chinese Patent No. CN103457093A, which includes an insulating body, a terminal module housed in the insulating body, and a shielding case covering the insulating body. Body, the electrical connector is grounded by soldering the shield shell to the circuit board. The process efficiency is low, waste gas and liquid are generated, it is not environmentally friendly, and grounded parts cannot be used in circles.

The technical problem to be solved by the present invention is to provide an electrical connector with simple manufacturing process and environmental protection.

In order to solve the above technical problems, the present invention provides an electrical connector, which includes an insulating body, a terminal module housed in the insulating body, and a shielded shell covering the insulating body. The terminal module includes A plurality of conductive terminals housed in the insulating body, a plastic block fixing the conductive terminals, a circuit board disposed above the plastic block, the shielding case is partially bent inward to form a resisting arm, and the resisting The arm is in contact with the circuit board to achieve electrical contact.

Further, the shielding shell includes left and right side walls, and the resisting arm is formed by bending inwardly from the side walls.

Further, the resisting arm is located between the circuit board and the plastic block.

Further, two sides of the plastic block are respectively recessed inward to form two yielding gaps and two positioning blocks, the resisting arm includes a front portion and a root portion, and the front portion of the resisting arm is clamped to the circuit board. Between the positioning block and the positioning block, a root of the resisting arm is located between the circuit board and the yielding gap.

Further, the plastic block further includes a base portion and an upper portion extending upward from the base portion, and the upper portion includes ear portions on left and right sides, and left and right edges of the ear portions protrude from left and right edges of the base portion, The yielding notch is formed from a part of the ear portion inwardly recessed.

Further, in the left-right direction, the two yielding gaps are not on the same straight line.

Further, the resisting arm is an elastic piece.

Further, the plastic block is provided with a front surface, the front surface includes a first step surface and a second step surface, the second step surface is recessed inward compared to the first step surface, and the conductive terminal includes a butt connection A contact portion of the connector, the contact portion moves along a certain trajectory when docked with the butt connector, and the first step surface and the second step surface are disposed on an extension line of the trajectory of the contact portion.

Further, the conductive terminal further includes a fixing portion and a connecting portion connecting the contact portion and the fixing portion. The contact portion is disposed obliquely. When the contact portion is forced to move clockwise, the contact portion The free end is close to the first step surface and the second step surface in order. During the movement of the contact portion, the free end of the contact portion does not contact the first step surface and the second step surface.

Further, the plastic block further includes a terminal fixing groove formed inwardly recessed from the front surface and a partition wall between two adjacent terminal fixing grooves, and the partition wall includes a clamp between the two adjacent A separating wall between the terminal fixing grooves and a blocking wall formed by extending forward from the front end of the separating wall, the left and right edges of the blocking wall protrude from the left and right edges of the separating wall, and the first step surface and the first step surface A two-step surface is disposed on the retaining wall.

Compared with the prior art, the present invention realizes grounding by abutting the shielding case against the circuit board through a special structural design, eliminating the welding process, which is convenient for manufacturing and environmentally friendly.

Please refer to the first to eighth figures. An electrical connector 100 according to the present invention includes an insulating body 1, a terminal module housed in the insulating body 1, an LED lamp 3 housed in the insulating body 1, and A shielding case 4 covering the insulating body 1. In the present invention, the directions are referred to the first figure. The mating direction of the electrical connector 100 in the first figure is the front-back direction, the left-right direction perpendicular to the docking direction is transverse, and the vertical direction perpendicular to the docking direction is longitudinal.

Please refer to FIGS. 6 to 8. The terminal module 2 includes a conductive terminal 21 housed in the insulating body 1, a plastic block 22 fixing the conductive terminal 21, and a circuit board 23 disposed above the plastic block 22. The conductive terminal 21 includes an elastic contact portion 211, a fixing portion 212 fixed in the plastic block 22, and a connecting portion 213 connecting the contact portion 211 and the fixing portion 212. In the preferred embodiment, the plane where the fixing portion 212 is located is perpendicular to the plane where the circuit board 23 is located, the plane where the connection portion 213 is located is parallel to the plane where the circuit board 23 is located, the contact portion 211 extends obliquely upward, and the angle between the contact portion 211 and the connection portion 213 is Acute angle.

The plastic block 22 includes a base portion 222, an upper portion 221 extending upward from the base portion 222, and a limiting portion 224 extending upward from the upper portion 221. The upper portion 221 includes two ear portions 2211 on both sides, connecting the front portion 2214 and the rear portion 2212 of the two ear portions 2211, and a receiving cavity 2213 surrounded by the ear portions 2211, the front portion 2214, and the rear portion 2212. The two ear portions 2211 are partially depressed inwardly to form two yielding gaps 2217 and two positioning blocks 2216, respectively. In this embodiment, in the left-right direction, the two yielding gaps 2217 are not on the same straight line, and the structure is more stable by using a dislocation. In other embodiments, the two yielding gaps 2217 may also be disposed on the same straight line. In the left-right direction, the left and right edges of the two ear portions 2211 protrude from the left and right edges of the base 222, respectively. In the front-rear direction, the front portion 2214 is flush with the front edge of the base 222, and the rear edge of the rear portion 2212 protrudes from the rear edge of the base 222. The plastic block 22 also includes a front end surface 220, a terminal fixing groove 225 formed inwardly recessed from the front surface 220, a partition wall 226 located between two adjacent terminal fixing grooves 225, and a positioning formed by extending forward from the front surface 220.部 223. The partition wall 226 includes a partition wall 2267 sandwiched between the terminal fixing grooves 225 and a blocking wall 2264 extending forward from a front end of the partition wall 2267. The lateral thickness of the blocking wall 2264 is greater than the lateral thickness of the separation wall 2267 so as to block the conductive terminals 21 accommodated in the terminal fixing groove 225 from moving outward. In this embodiment, the left and right edges of the blocking wall 2264 protrude from the separation wall 2267. Left and right edges. The blocking wall 2264 includes a first stepped surface 2261, a second stepped surface 2262, and an inclined surface 2263 connecting the first stepped surface 2261 and the second stepped surface 2262 at the front end surface 220. The first stepped surface 2261 protrudes from the second stepped surface 2261, that is, the second stepped surface 2261 is recessed inward compared to the first stepped surface 2261, so as to give way to the contact portion 211 of the conductive terminal 21 that rotates clockwise. . In this embodiment, the inclined surface 2263 is inclined. In other embodiments, the inclined surface 2263 may be a curved surface or a horizontal plane. The circuit board 23 is assembled on the plastic block 22, and is provided with a limiting hole 234 that cooperates with the limiting portion 224, a fixing hole 232 for the tail portion of the fixing portion 212 to pass through, a plurality of coils 231, and a shield The conductive sheet 235 is electrically connected to the casing 4.

The insulating body 1 includes a receiving cavity 10 for receiving a docking connector (not shown), a terminal slot for receiving a conductive terminal 21, a lamp slot 13 for receiving an LED lamp 3, a first rear end surface 12 docking with a plastic block 22, and a first The positioning hole 14 formed by the rear end surface 12 inwardly recessed, the receiving notch 16 at the front of the receiving circuit board 23, and the abutting wall 15 above the upper surface of the receiving circuit board 23. The terminal slot includes a bottom terminal slot 111 and a rear terminal slot 112.

The shielding case 4 includes an upper wall 41, two side walls 42 formed by bending downwardly from both sides of the upper wall 41, a front wall 43 formed by bending forwardly from the upper wall 41, and a rear wall 44 connecting the rear ends of the two side walls 42. The front wall 43 is provided with an opening 431 and a lamp hole 432 through which the LED lamp 3 passes. The shielding shell 4 further includes a plurality of limiting legs 423 extending vertically downward, and a resisting arm 421 is partially bent inward by the side wall 42. The resisting arm 421 includes a front portion and a root portion. The front portion of the resisting arm 421 is clamped between the circuit board 23 and the positioning block 2216. A root portion of the resisting arm 421 is located between the circuit board 23 and the positioning portion. Give way between the gaps 2217.

Please refer to the first to eighth and tenth figures. During assembly, the terminal module 2 is assembled into the insulating body 1 from back to front, and the connecting portion 213 of the conductive terminal 21 is received in the bottom terminal slot 111 in the insulating body 1. In the middle, the tail of the contact portion 211 is received in the rear terminal slot 112, the plastic block 22 is assembled at the first rear end face 12 of the insulating body 1, the positioning portion 223 is inserted into the positioning hole 14, and the front portion of the circuit board 23 is received in the receiving gap 15 In the embodiment, the LED lamp 3 is housed in the lamp slot 13. Before assembling the shielding case 4, the resisting arm 421 of the shielding case 4 is an elastic piece extending vertically downward from the side wall 42. The shielding case 4 with the vertically downward elastic piece is set outside the insulating body 1, and then the elastic piece Bend inward to form a resisting arm 421. The resisting arm 421 is inserted between the circuit board 23 and the plastic block 22. The resisting arm 421 is in contact with the circuit board 23 to achieve grounding. The resisting arm 421 is electrically connected to the conductive sheet 235 on the circuit board 23 by resisting. The resisting arm 421 is bent inward at the yielding gap 2217. The yielding gap 2217 reserves a bending space for the resisting arm 421 to facilitate the bending of the resisting arm 2217. The resisting arm 421 is clamped on the positioning block 2216. It is grounded by interference with the circuit board 23 and interference with the circuit board 23.

Please refer to the tenth figure. In the present invention, the shielding case 4 is grounded by being in contact with the circuit board 23 without soldering, and the plastic block 22 is provided with a notch 2217 for the bending of the holding arm 421. Give up space, the resisting arm 421 is an elastic piece. After bending, the resisting arm 421 is clamped between the positioning block 2216 and the circuit board 23, and the interference resists the circuit board 23 to achieve stable grounding. The entire assembly process is simple, without welding, which facilitates the secondary use of parts and is environmentally friendly.

Please refer to the ninth figure. In the present invention, when mating with the mating connector, the contact portion 211 of the conductive terminal 21 moves along a certain trajectory, and the first step surface 2261 and the second step surface 2262 are disposed on the contact portion 211. The extension of the motion track. In this embodiment, the contact portion 211 of the conductive terminal 21 is rotated clockwise by force, and the front end surface 220 of the plastic block 22 is provided with a first step surface 2261 and a second step surface 2262. The second step surface 2262 is compared with the first step surface 2262. The step surface 2261 is recessed inward, and provides a space for the contact portion 211 of the conductive terminal 21 that rotates clockwise. The contact portion 211 moves along the trajectory of the first step surface 2261, the inclined surface 2263, and the second step surface 2262 in sequence. The free end of the contact portion 211 approaches the first step surface 2261, the inclined surface 2263, and the second step surface 2262 in sequence. The contact makes the contact portion 211 not be blocked by the front surface 220 during the movement. While the length of the conductive terminal 21 is not changed, the overall length of the electrical connector 100 is minimized to achieve miniaturization of the electrical connector 100.

1‧‧‧Insulated body

10‧‧‧ Containment Chamber

100‧‧‧electrical connector

111‧‧‧ bottom terminal slot

112‧‧‧ rear terminal slot

12‧‧‧ the first rear face

13‧‧‧light trough

14‧‧‧ positioning holes

15‧‧‧ on the resist wall

16‧‧‧ Containment gap

2‧‧‧Terminal Module

21‧‧‧Conductive terminal

211‧‧‧Elastic contact part

212‧‧‧Fixed

213‧‧‧Connection Department

22‧‧‧Plastic Block

220‧‧‧ front face

221‧‧‧upper

2211‧‧‧Ear

2212‧‧‧ rear

2213‧‧‧Container

2214‧‧‧Front

2216‧‧‧ Positioning block

2217‧‧‧Gap

222‧‧‧Base

223‧‧‧Positioning Department

224‧‧‧Limiting Department

225‧‧‧Terminal fixing groove

226‧‧‧ partition

2261‧‧‧First step surface

2262‧‧‧Second step surface

2263‧‧‧inclined

2264‧‧‧ Retaining wall

2267‧‧‧Separation wall

23‧‧‧Circuit Board

231‧‧‧coil

232‧‧‧Fixing hole

234‧‧‧ limit hole

235‧‧‧Conductive sheet

3‧‧‧LED light

4‧‧‧ shielding shell

41‧‧‧ Upper wall

42‧‧‧ both sides

421‧‧‧bearing arm

423‧‧‧Limit foot

43‧‧‧ front wall

431‧‧‧ opening

432‧‧‧light hole

The first figure is a three-dimensional assembled view of the electrical connector of the present invention.

The second view is another perspective view of the first view.

The third diagram is a partial exploded view of the electrical connector shown in the first diagram.

The fourth diagram is a further exploded view of the electrical connector shown in the third diagram.

The fifth diagram is another perspective view of the fourth diagram.

The sixth diagram is a further exploded view of the electrical connector shown in the fourth diagram.

The seventh diagram is an enlarged view of the exploded view of the terminal module in the sixth diagram.

The eighth figure is a further exploded view of the electrical connector shown in the fourth figure.

The ninth figure is a sectional view of the electrical connector shown in the first figure along line IX-IX.

The tenth figure is a cross-sectional view of the electrical connector shown in the first figure along the line X-X.

no

Claims (10)

An electrical connector includes an insulating body, a terminal module housed in the insulating body, and a shielding case covered in the insulating body. The terminal module includes a plurality of housings housed in the insulating body. A conductive terminal, a plastic block that fixes the conductive terminal, and a circuit board disposed above the plastic block, wherein the shielding case is partially bent inward to form a resisting arm, and the resisting arm resists the circuit board Make electrical contact. The electrical connector according to item 1 of the scope of patent application, wherein the shielding shell includes left and right side walls, and the resisting arm is partially bent inwardly from the side walls. The electrical connector according to item 2 of the scope of patent application, wherein the resisting arm is located between the circuit board and the plastic block. The electrical connector according to item 3 of the scope of patent application, wherein the two sides of the plastic block are respectively recessed inward to form two yielding gaps and two positioning blocks, the resisting arm includes a front part and a root part, and the resisting arm includes The front part of the holding arm is clamped between the circuit board and the positioning block, and the root of the holding arm is located between the circuit board and the yielding gap. The electrical connector according to item 4 of the scope of patent application, wherein the plastic block further includes a base portion and an upper portion extending upward from the base portion, and the upper portion includes ear portions on the left and right sides, and the ear portions The left and right edges protrude from the left and right edges of the base portion, and the yielding notch is formed by inward recessing from a part of the ear portion. The electrical connector according to item 4 of the scope of patent application, wherein in the left-right direction, the two yielding gaps are not on the same straight line. The electrical connector according to item 1 of the scope of patent application, wherein the resisting arm is an elastic piece. The electrical connector according to item 1 of the scope of patent application, wherein the plastic block is provided with a front end surface, the front end surface includes a first step surface and a second step surface, and the second step surface is compared with the first step. Facing inward, the conductive terminal includes a contact portion that is docked with the docking connector. The contact portion moves along a certain trajectory when docked with the docking connector, and the first step surface and the second step surface are provided at the place. The extension of the motion trajectory of the contact portion. The electrical connector according to item 8 of the scope of patent application, wherein the conductive terminal further includes a fixing portion and a connecting portion connecting the contact portion and the fixing portion, and the contact portion is disposed obliquely. When the force is moved clockwise, the free end of the contact portion approaches the first step surface and the second step surface in turn. During the movement of the contact portion, the free end of the contact portion does not contact the first step surface. The stepped surface and the second stepped surface. The electrical connector according to item 8 of the scope of patent application, wherein the plastic block further includes a terminal fixing groove formed inwardly recessed from the front surface and a partition wall between two adjacent terminal fixing grooves. The partition wall includes a partition wall sandwiched between the two adjacent terminal fixing grooves, and a blocking wall extending forward from the front end of the partition wall, and the lateral thickness of the blocking wall is greater than the lateral thickness of the partition wall. Thickness, the first step surface and the second step surface are disposed on the blocking wall.