TWI599117B - Electrical connector - Google Patents

Description

Electrical connector

The present invention relates to an electrical connector, and more particularly to an electrical connector on an electronic device as a signal input/output (I/O) interface.

In recent years, with the popularization of various lightweight consumer electronic products such as mobile phones, PDAs, MP3s and notebook computers, electrical connectors with input/output functions have been widely used, and their main function is to provide audio and video of electronic products. Signal input/output. In existing consumer electronic products, when a liquid is encountered, the liquid flows into the interior of the consumer electronic product through an electrical connector (such as an audio connector combination), damaging the electronic combination of the electronic device. Therefore, the electrical connector installed on the consumer electronic product needs to have a waterproof function. For example, the Chinese utility model patent CN201797146U announced on April 13, 2011 discloses that a waterproof film is attached to the bottom of the audio connector to have Waterproof, but this audio connector has a low waterproof rating and can only prevent a small amount of water or liquid from splashing. When a large amount of water enters the audio connection, the waterproof membrane is separated from the audio connector, and the waterproof membrane loses its waterproof function.

In view of this, it is necessary to provide a new electrical connector to overcome the above problems.

It is an object of the present invention to provide an electrical connector having a higher level of waterproofing.

The electrical connector of the present invention can be implemented by the following technical solutions: an electrical connector for mounting on a circuit board, comprising: an insulating body and being received in the insulating body a plurality of conductive terminals, the bottom wall of the insulating body is provided with an annular groove around the circumference thereof, and the electrical connector further comprises a waterproof ring received in the annular groove and protruding from the annular groove and the insulating body The waterproof ring is used to be in close contact with the circuit board.

Compared with the prior art, the waterproof ring of the electrical connector of the present invention is tightly attached to the circuit board, and the water or liquid cannot flow out of the waterproof ring through the installation gap between the conductive terminal and the insulating body, and the circuit board The electronic combination and other electrical connectors will not be damaged, and the waterproof level is high, and even if there is a large amount of water, the waterproof ring will not flow out.

100‧‧‧Electrical connector

200‧‧‧ boards

1‧‧‧Insulating body

11‧‧‧Terminal slot

12‧‧‧Bump

13‧‧‧ wing

131‧‧‧Installation holes

14‧‧‧ring groove

2‧‧‧Electrical terminals

21‧‧‧First terminal

211,221,231,241,251‧‧‧ fixed parts

212,222,232,242‧‧‧Contacts

213,223,233,243‧‧‧Bends

214, 224, 234, 244, 254 ‧ ‧ tail

2141, 2241, 2341, 2441, 2541‧‧‧

2511‧‧‧Flexible arm

2221, 2321, 2421‧ ‧ touch points

3‧‧‧Waterproof ring

31‧‧‧Forearm

32‧‧‧ rear arm

33‧‧‧ left arm

34‧‧‧ right arm

341‧‧‧Let the slot

4‧‧‧Flexible printed circuit board

41‧‧‧ solder joints

42‧‧‧through hole

43‧‧‧Extension

10‧‧‧ accommodating space

22‧‧‧second terminal

23‧‧‧ Third terminal

24‧‧‧fourth terminal

25‧‧‧ fifth terminal

The first drawing is a perspective view of the electrical connector of the present invention assembled with the circuit board; the second drawing is an assembled view of the electrical connector; the third drawing is a partially exploded view of the electrical connector shown in the second figure; 2 is a perspective assembled view of the electrical connector shown in the second figure; the fifth figure is an exploded perspective view of the electrical connector shown in the fourth figure from another angle.

Referring to the first and fifth figures, the electrical connector 100 is mounted on the circuit board 200 for receiving a mating connector (not shown), and includes an insulative housing 1 having a receiving space 10 and a plurality of conductive terminals 2 held in the insulative housing 1 , a waterproof ring 3 housed in the insulative housing 1 and surrounding all the conductive terminals 2 , and a flexible printed circuit board 4 mounted on the bottom wall of the insulative housing 1 and held in the waterproof ring 3 .

Referring to the third figure, the insulative housing 1 has a substantially rectangular block shape, and has a cylindrical receiving space formed by the front end surface and recessed therein for receiving the mating connector. Two rows of terminal slots 11 on the bottom wall, two studs 12 between the two rows of terminal slots 11, and a pair of wing portions 13 on the two sides of the insulative housing 1 which are staggered in the vertical direction. The pair of wings 13 have mounting holes 131, respectively, through which screws (not shown) secure the electrical connector 100 to the circuit board 200. The bottom wall of the insulative housing 1 has an annular groove 14 around its periphery for receiving the waterproof ring 3, and the annular groove 14 is substantially rectangular in shape, and all the conductive terminals 2 are enclosed therein.

Referring to the first and fifth figures, and in combination with the third figure, the plurality of conductive terminals 2 are received in the terminal slots 11 in two rows, and the first terminal 21, the second terminal 22, and the third terminal 23 are arranged in a row, and the fourth The terminal 24 and the fifth terminal 25 are arranged in a row. The first terminal 21 is a left channel terminal, the second terminal 22 transmits a right channel signal, the third terminal 23 is a ground terminal, the fourth terminal 24 transmits a microphone signal, and the fifth terminal 25 is a detection terminal. The first terminal 21 has a U-shaped horizontal shape, and has a flat-shaped fixing portion 211 , a contact portion 212 protruding from the fixing portion 211 and protruding into the receiving space 10 , and a bending of the connecting fixing portion 211 and the contact portion 212 . In the portion 213, the bottom portion of the fixing portion 211 is curvedly formed with a tail portion 214 which is in contact with the flexible printed circuit board 4, and the tail portion 214 is provided with a projection 2141 which is welded to the flexible printed circuit board 4. The second terminal 22 has the same structure as the third terminal 23 and the fourth terminal 24, and is substantially U-shaped, and includes bent portions 223, 233, 243 which are bent in the middle portion, and bent ends of the bent portions 223, 233, 243 respectively. The fixing portions 221, 231, 241 extending in the insulative housing 1 and the contact portions 222, 232, 242 protruding into the receiving space 10 are extended. The contact portions 222, 232, 242 have convex-shaped contact points 2221, 2321, 2421 protruding into the receiving space 10, and the bottoms of the fixing portions 221, 231, 241 are bent and extended to be in contact with the flexible printed circuit board 4. The tails 224, 234, 244 and the tail portions 224, 234, 244 are provided with projections 2241, 2341, 2441 welded to the flexible printed circuit board 4. The fifth terminal 25 has a flat fixing portion 251 and a bottom portion bent from the bottom of the fixing portion 251 to form a tail portion that is in contact with the flexible printed circuit board 4 254, the tail portion 254 is provided with a protrusion 2541 welded to the flexible printed circuit board 4, and the fixing portion 251 is provided with a resilient arm 2511 which is stamped to extend into the receiving space 10.

Referring to the third to fourth figures, the waterproof ring 3 is annular, and is received in the annular groove 14. The front arm 31 and the rear arm 32 are connected, and the left arm 33 and the right arm 32 are connected in parallel with the rear arm 31 and the rear arm 32. Arm 34. The right arm 34 has a retaining groove 341. The forearm 31 is generally Z-shaped and extends rightward and rearward from the left arm 33 to the right. The waterproof ring 3 is embedded in the annular groove 14 and protrudes from the annular groove 14. The length of the left arm 33 is greater than the length of the right arm 34.

Referring to the third to fifth figures, the flexible printed circuit board 4 is received in the waterproof ring 3 and electrically connected to the conductive terminal 2 . The flexible printed circuit board 4 is provided with two rows of solder joints 41 corresponding to the two rows of conductive terminals 2 and a through hole 42 between the two rows of solder joints 41. The through holes 42 cooperate with the studs 12 on the insulative housing 1. The flexible printed circuit board 4 has an extension 43 extending outward from one side thereof. The stud 12 passes through the through hole 42 to position the flexible printed circuit board 4 on the insulative housing 1. The extension 43 is electrically connected to the circuit board 200 (not shown).

In the present embodiment, in the present embodiment, when the electrical connector 100 is assembled, the insulative housing 1 is injection molded first, and the waterproof ring 3 is overmolded into the annular groove 14 of the insulative housing, and the waterproof ring 3 is embedded in the annular groove. 14 and protrudes out of the annular groove 14. The conductive terminal 2 is received in the insulative housing 1 , the contact portions 212 , 222 , 232 , 242 of the conductive terminal 2 and the elastic arm 2511 extend into the receiving space 10 , and the flexible printed circuit board 4 is positioned on the stud 12 and electrically conductive. The terminal 2 is soldered to the solder joint 41 of the flexible printed circuit board 4, and the extending portion 43 of the flexible printed circuit board 4 extends through the retaining groove 341 of the waterproof ring 3 to extend out of the waterproof ring 3, and the shell passes through the mounting hole 131 with a screw. The electrical connector 100 is fastened to the circuit board 200, and the waterproof ring 3 is tightly pressed against the circuit board 200 by the locking force of the screws. The extension portion 43 is electrically connected to the circuit board 200 to electrically connect the conductive terminal 2 to the circuit board 200.

In other embodiments, the formed waterproof ring can be assembled into the annular groove, and the mold structure is relatively simple.

In other embodiments, the conductive terminals 2 are directly soldered to the circuit board 200 without adding the flexible printed circuit board 4, and the signals of the conductive terminals 2 are directly transmitted to the circuit board 200.

Water or liquid enters the lower surface of the bottom wall of the insulating body 1 through the receiving space 10 of the insulating body 1 into the mounting gap between the conductive terminal 2 and the insulating body 1. The waterproof ring 3 and the circuit board 200 are tightly attached together, and the water Or the liquid cannot flow out of the waterproof ring 3 to form a waterproof structure, and the electronic combination (not shown) on the circuit board 200 and other electrical connectors (not shown) are not damaged. And the waterproof level is high, and even if there is a large amount of water, the waterproof ring 3 does not flow out.

In summary, the present invention complies with the requirements of the invention patent and submits a patent application according to law. However, the above description is only a preferred embodiment of the present invention, and the scope of the present invention is not limited to the above embodiments, and those skilled in the art will be able to make equivalent modifications or variations in accordance with the spirit of the present invention. It should be covered by the following patent application.

100‧‧‧Electrical connector

1‧‧‧Insulating body

22‧‧‧second terminal

21‧‧‧First terminal

24‧‧‧fourth terminal

23‧‧‧ Third terminal

4‧‧‧Flexible printed circuit board

3‧‧‧Waterproof ring

25‧‧‧ fifth terminal

Claims (10)

An electrical connector for mounting on a circuit board, comprising: an insulative housing; a plurality of conductive terminals received in the insulative housing; wherein the bottom wall of the insulative housing is provided with a ring surrounding the periphery of the insulative housing The waterproof connector is further provided with a waterproof ring that is received in the annular groove and protrudes from the annular groove and the insulating body, and the waterproof ring is used to be in close contact with the circuit board. The electrical connector of claim 1, wherein the electrical connector is further provided with a flexible printed circuit board, the flexible circuit board being soldered to the conductive terminal and received in the waterproof ring. The electrical connector of claim 2, wherein the flexible printed circuit board is provided with an extension extending outward from a side of the flexible printed circuit board, and the waterproof ring is provided with a positioning slot. The extension is electrically connected to the circuit board through the yielding slot. The electrical connector of claim 2, wherein the flexible printed circuit board has a through hole, and the bottom wall of the insulating body further has a protruding post, the protruding post passing through the through hole. The electrical connector of claim 1, wherein the two sides of the insulating body are further provided with a pair of wing portions which are staggered in the front-rear direction, and the pair of wing portions respectively have mounting holes. The electrical connector of claim 1, wherein the plurality of conductive terminals comprise a first terminal, a second terminal, a third terminal, a fourth terminal and a fifth terminal, wherein the first terminal transmits a left channel a signal, the second terminal transmits a right channel signal, the third terminal is a ground terminal, the fourth terminal transmits a microphone signal, and the fifth terminal is a detection terminal. The electrical connector of claim 1, wherein the waterproof ring has a forearm, and a a rear arm oppositely disposed on the forearm, a left arm and a right arm connected in parallel with the forearm and the rear arm, wherein the forearm is Z-shaped, and the forearm extends rightward and rearward from the left arm to the right. The electrical connector of claim 7, wherein the length of the left arm is greater than the length of the right arm. The electrical connector of claim 1 or 8, wherein the insulating body is injection molded, and the waterproof ring is overmolded in the annular groove. The electrical connector of claim 1 or 8, wherein the insulating body is injection molded, and the waterproof ring is assembled in the annular groove.