TWI578636B - Electrical connector and method of making the same - Google Patents

Description

Electrical connector and method of manufacturing same

The present invention relates to an electrical connector and a method of manufacturing the same, and more particularly to a waterproof electrical connector suitable for forward and reverse insertion and a method of manufacturing the same.

There is a waterproof electronic device, and the electrical connector disposed thereon should also have the function of waterproofing. The common electrical connector includes an insulating body, a conductive terminal held on the insulating body, and a shielding shell sleeved on the insulating body, usually It is sealed at the end of the electrical connector to achieve waterproofing.

Referring to the first case of the Chinese Utility Model No. CN203932465U, an electrical connector with waterproof function is disclosed, which comprises an insulating body, the insulating body comprises a rubber core and a tongue plate, and the plurality of terminals held by the rubber core surround the insulation Forming a metal shell of a mating space, connecting the metal shell, the rubber core and the waterproof glue of the terminals, a waterproof rubber ring surrounding the front end of the metal shell, and a film attached to the gap of the metal shell . Referring to the second case of the Chinese Patent No. CN102782951A, a connector is disclosed, which comprises a support portion and a casing which are arranged in the casing and a terminal which is fixed to the support portion, and a soft seal is arranged at the insertion end of the casing. The material and its tail are provided with other sealing materials. In the first case, a waterproof glue is provided at the tail, and a film and a metal casing are provided at the front end of the metal casing to surround the waterproof ring to achieve waterproofing, but the film attached to the surface of the metal casing is used. It is easy to fall off, causing the gap to be exposed to affect the overall waterproof performance. Both the first case and the second case are waterproofed by providing waterproof glue and other sealing materials at the tail, but due to its The tail of the terminal is exposed outside the waterproof glue and other sealing materials. When the terminal is soldered to the circuit board, other sealing materials may be melted, so that the waterproof effect is greatly reduced and water leakage occurs.

Therefore, it is indeed necessary to provide a new electrical connector and a method of manufacturing the same to overcome the above drawbacks.

The purpose of this creation is to provide a waterproof electrical connector suitable for forward and reverse insertion and a method of manufacturing the same.

In order to solve the above technical problem, the present invention provides an electrical connector, comprising an insulative housing, a plurality of conductive terminals held in the insulating body, a shielding housing fixed in a cylindrical shape on the insulating body, and a circuit electrically connected to the plurality of conductive terminals. The electrical connector further includes an insulating housing sleeved on the shielding housing and a rubber plate at the tail of the shielding housing, the end of the insulating housing is formed with a plastic cavity, the rubber plate The end of the insulating housing is closed in the adhesive cavity, and the circuit board portion extends into the adhesive cavity of the insulating housing and is partially exposed at the tail end of the insulating housing.

Further, the electrical connector further includes a metal reinforcement member, the insulating body includes an end seat and a lower end seat and a base fixed on the upper and lower ends of the metal reinforcement member, the metal reinforcement member, the upper end seat and the lower end seat Retained in the base, the plurality of conductive terminals include an upper row of terminals held in the upper end seat and a lower row of terminals held in the lower end seat, the number of the upper row of terminals and the lower row of terminals the same.

Further, wherein the upper end seat has a first tongue, the lower end seat has a second tongue, the base has a third tongue, and the first tongue and the second tongue are accommodated in the first Inside the three tongues.

Further, wherein the insulating body is formed with an upper surface of the upper end seat and a lower surface of the lower end seat, the upper row of terminals and the lower row of terminals respectively being exposed outside the upper and lower surfaces for a contact portion that abuts the mating connector, a bent portion that extends rearward from the contact portion and protrudes upward, and is bent downward from the bent portion to be exposed at a rear end of the insulating body for electrically connecting to the circuit board Welded joints.

Further, the soldering portion of the upper row of terminals is located at a rear end of the soldering portion of the lower row of terminals.

Further, wherein the rubber sheet is formed by solidification of the waterproof glue after filling in the cavity.

Further, wherein the adhesive cavity extends forward to the rear end of the base, the rubber plate seals the tail portion of the upper end seat and the lower end seat, the welded portion of the upper row terminal and the lower row terminal, and the shielding shell The gap between the end, the circuit board and the insulating housing.

Further, a front end of the insulating housing is surrounded by a waterproof ring.

Further, the method of manufacturing the electrical connector includes the following steps: a first step of providing a body module and a shielding shell for holding a plurality of conductive terminals, and holding the shielding shell on the body module a second step of providing a circuit board and an insulative housing, soldering the circuit board to the plurality of conductive terminals to complete an electrical connection, and the insulating housing is sleeved on the shielding housing, the insulation The end of the casing is formed with a glue cavity; in the third step, a waterproof glue is provided, and the waterproof glue is injected into the cavity, filling the entire cavity, and solidified to form a rubber plate.

Further, in the first step, the body module holding the plurality of conductive terminals includes an upper end seat, a lower end seat, a base, a metal reinforcement member, an upper row of terminals, and a lower row of terminals. First, the upper row The terminal and the lower row of terminals are integrally formed with the upper end seat and the lower end seat respectively; secondly, the upper end seat and the lower end seat respectively fixedly holding the upper row terminal and the lower row terminal are respectively disposed on the upper and lower sides of the metal reinforcing member Finally, the base is integrally formed with the base.

Compared with the prior art, the present invention has at least the following beneficial effects: after the insulating body of the present invention is sheathed, the upper row and the lower row of terminals are respectively soldered to the circuit board, and then the shielding case is An insulating case is sleeved on the end of the insulating case, and a rubber plate is disposed at a tail portion of the insulating case to cover a tail end of the insulating body, a conductive terminal and an inner surface of the shielding case, and the rubber plate partially covers the circuit board, thereby Achieve good waterproof performance and effectively prevent water leakage.

100‧‧‧Electrical connector

1‧‧‧ boards

2‧‧‧Insulated body

21‧‧‧ upper surface

22‧‧‧ Lower surface

23‧‧‧Upper seat

231‧‧‧First tongue

24‧‧‧ lower end seat

241‧‧‧Second tongue

25‧‧‧Base

251‧‧‧ Third tongue

3‧‧‧Electrical terminals

31‧‧‧Upper terminal

32‧‧‧lower terminal

311, 321‧ ‧ contact

312, 322‧‧‧ bends

313, 323‧‧ ‧ Welding Department

4‧‧‧Metal reinforcements

5‧‧‧Shaded housing

6‧‧‧Insulated housing

61‧‧‧Capacity chamber

62‧‧‧ positioning slot

7‧‧‧ Rubber board

8‧‧‧Waterproof ring

The first picture is a three-dimensional combination of the creation.

The second figure is a three-dimensional combination view of the first figure seen from another direction.

The third figure is a partial exploded view of the original board after removing the board and the board.

The fourth figure is a partial exploded view of the third figure seen from another direction.

The fifth figure is an exploded view of the insulative body, conductive terminals and metal reinforcements of the present invention.

The sixth figure is an exploded view of the fifth figure in the other direction.

The seventh picture is a partial exploded view of the creation.

Figure 8 is a cross-sectional view taken along line VIII-VIII of the second figure.

Hereinafter, a specific embodiment of the present electrical connector 100 will be described in conjunction with the first to eighth figures. The directions involved in this specification are all referenced to the second figure, and the end of the rubber sheet 7 is defined as the rear end.

Referring to FIG. 1 to FIG. 8 , an electrical connector 100 includes an insulative housing 2 , a plurality of conductive terminals 3 held in the insulative housing 2 , a shield housing 5 held in a cylindrical shape on the insulative housing 2 , and A circuit board 1 electrically connected to the plurality of conductive terminals 3. The electrical connector 100 further includes an insulative housing 6 sleeved on the shielding housing 5 and a rubber sheet 7 located at the tail of the shielding housing 5. A plastic cavity 61 is formed at a tail end of the insulating housing 6. The rubber sheet 7 is located in the plastic cavity 61 to block the tail end of the insulating housing 6. The circuit board 1 partially extends into the adhesive cavity 61 of the insulating housing 6 and is partially exposed at the tail end of the insulating housing 6.

Referring to FIGS. 3 to 8 , the electrical connector 100 further includes a metal reinforcement 4 . The insulative housing 2 includes an end seat 23 and a lower end seat 24 and a base 25 that are held on the upper and lower ends of the metal reinforcement 4 . The metal reinforcement 4, the upper end seat 23 and the lower end seat 24 are retained in the base 25. The base 25 is integrally molded by re-injection molding the metal reinforcement 4, the upper end seat 23 and the lower end seat 24 relative to each other.

The insulative housing 2 is formed with an upper surface 21 of the upper end seat 23 and a lower surface 22 of the lower end seat 24. The upper end seat 23 has a first tongue plate 231, and the lower end seat 24 has a second tongue plate 241 having a third tongue plate 251. The first tongue plate 231 and the second tongue plate 241 are housed in the third tongue plate 251 after assembly.

Referring to FIGS. 3 to 8 , the plurality of conductive terminals 3 include an upper row of terminals 31 held in the upper end seat 23 and a lower row of terminals 32 held in the lower end seat 24 . The number of the upper row of terminals 31 and the lower row of terminals 32 are the same. The upper row of terminals 31 and the lower row of terminals 32 respectively include dew The contact portions 311, 321 for abutting the mating connector outside the upper surface 21 and the lower surface 22, the bent portions 312, 322 extending rearward from the contact portions 311, 321 and protruding upward The bent portions 312 and 322 are bent downward to expose the welded portions 313 and 323 which are electrically connected to the circuit board 1 at the rear end of the insulating body 2 .

The contact portions 311, 321 of the upper row of terminals 31 and the lower row of terminals 32 are exposed outside the upper surface 21 of the upper end seat 23 and the lower surface 22 of the lower end seat 24, respectively. The welded portions 313, 323 of the upper row of terminals 31 and the lower row of terminals 32 are exposed at the tail portion of the upper end seat 23 and the tail portion of the lower end seat 24, respectively. The soldering portion 313 of the upper row of terminals 31 is located at the rear end of the soldering portion 323 of the lower row of terminals 32.

Referring to the third, fourth and eighth figures, the shielding housing 5 is a metal tubular member, and the shielding housing 5 is fixed on the insulating body 2.

Referring to the first to fourth figures and the seventh to eighth figures, the insulating housing 6 is a cylindrical member. The longitudinal length of the insulating housing 6 is greater than the length of the insulating body 2 and is greater than the length of the shielding housing 5. The insulating housing 6 is sleeved on the shielding case 5 after the upper row of terminals 31 and the lower row of terminals 32 are soldered to the circuit board 1. A sealing cavity 61 is formed at a rear end of the insulating housing 6, and the adhesive cavity 61 extends rearward to a rear end of the base 25. The circuit board 1 extends partially into the adhesive cavity 61 of the insulating housing 6 and is partially exposed outside the adhesive cavity 61 of the insulating housing 6 . The inner side of the insulating housing 6 is provided with a positioning groove 62 that is matched with the circuit board 1. A waterproof ring 8 is disposed around the front end of the insulating housing 6.

Referring to the second and seventh to eighth figures, the rubber sheet 7 is formed by solidification of the waterproof glue in the cavity 61. The rubber sheet 7 seals the tail portions of the upper end seat 23 and the lower end seat 24, the welded portions 313 and 323 of the upper row terminal 31 and the lower row terminal 32, the rear end of the shielding case 5, the circuit board 1 and the insulating housing 6 The gap between the two.

The manufacturing method of the present invention includes the following steps: a first step of providing a body module and a shielding case 5 for holding a plurality of conductive terminals 3, and holding the shielding case 5 to the body module The second step is to provide the circuit board 1 and the insulative housing 6, and the circuit board 1 and the plurality of conductive terminals 3 are soldered to complete electrical connection, and the insulating housing 6 is sleeved on the shielding shell. On the body 5, the end of the insulating housing 6 is formed with a forwardly extending adhesive cavity 61; a third step is to provide a waterproof glue, and the waterproof glue is injected into the adhesive cavity 61 to be filled. The entire adhesive cavity 61 is solidified and formed into a rubber sheet 7. The body module for holding the plurality of conductive terminals 3 in the first step includes an upper end seat 23. The lower end seat 24, the base 25, the metal reinforcement 4, the upper row of terminals 31 and the lower row of terminals 32. First, the upper row of terminals 31 and the lower row of terminals 32 are integral with the upper end seat 23 and the lower end seat 24, respectively. Secondly, the upper end seat 23 and the lower end seat 24 of the upper row of terminals 31 and the lower row of terminals 32 are respectively respectively disposed on the upper and lower ends of the metal reinforcement member 4; and finally integrated with the base 25 Formed into the body module.

Referring to the first, second, seventh and eighth figures, the circuit board 1 as described in the above embodiments may be defined as a mother board (not shown) of the electronic device or as a mother board (not shown). A sub-board (not shown) electrically connected.

Compared with the prior art, the present invention has the following beneficial effects: after the insulating body 2 of the present invention is sleeved with the shielding case 5, the upper row of terminals 31 and the lower row of terminals 32 are respectively soldered to the circuit board 1, and then An insulating shell 6 is sleeved on the shielding shell 5, and a rubber sheet 7 is disposed at the tail of the insulating shell 6 to cover the tail end of the insulating body 2, the conductive terminal 3 and the inner surface of the shielding shell 5. The rubber sheet 7 partially covers the circuit board 1 to achieve good waterproof performance (such as IPX7 waterproof), effectively preventing water leakage.

The above descriptions are only partial implementations of the present invention, and not all of the implementations. Any equivalent changes to the present technical solution by those skilled in the art by reading this creative specification are covered by the claims of the present invention. .

100‧‧‧Electrical connector

1‧‧‧ boards

23‧‧‧Upper seat

24‧‧‧ lower end seat

25‧‧‧Base

31‧‧‧Upper terminal

313‧‧‧Weld Department

32‧‧‧lower terminal

4‧‧‧Metal reinforcements

5‧‧‧Shaded housing

6‧‧‧Insulated housing

7‧‧‧ Rubber board

8‧‧‧Waterproof ring

Claims (9)

An electrical connector includes an insulative housing, a plurality of conductive terminals held in the insulating body, a shielding housing fixed in a cylindrical shape on the insulating body, and a circuit board electrically connected to the plurality of conductive terminals, wherein the electrical connector The utility model further includes an insulating shell sleeved on the shielding shell and a rubber sheet located at the tail of the shielding shell, wherein the tail end of the insulating shell is formed with a plastic cavity extending rearward to the rear end of the insulating body. The tail portion of the shielding shell and the tail end of the insulative housing are received in the adhesive cavity, and the circuit board is partially received in the adhesive cavity, partially exposed outside the adhesive cavity, the rubber plate Formed by the waterproof glue after the filling in the plastic cavity, so that the rubber plate seals the inner surface of the adhesive cavity and the tail of the shielding case housed in the cavity, and is insulated The gap between the end of the body and part of the board. The electrical connector of claim 1, wherein the electrical connector further comprises a metal reinforcement, the insulating body comprising an end seat and a lower end seat and a base supported on the upper and lower ends of the metal reinforcement. The metal reinforcing member, the upper end seat and the lower end seat are fixed in the base, and the plurality of conductive terminals comprise an upper row of terminals fixed in the upper end seat and a lower row of terminals fixed in the lower end seat. The number of the upper row of terminals and the lower row of terminals is the same. The electrical connector of claim 2, wherein the upper end seat has a first tongue, the lower end seat has a second tongue, the base has a third tongue, the first tongue The plate and the second tongue are received within the third tongue. The electrical connector of claim 2, wherein the insulative housing is formed on an upper surface of the upper end seat and below a lower end seat, the upper row of terminals and the lower row of terminals respectively including a contact portion for abutting the mating connector outside the upper surface and the lower surface, a bent portion extending rearward from the contact portion and protruding upwardly The bent portion is bent downward to expose a welded portion at the rear end of the insulating body for electrically connecting to the circuit board. The electrical connector of claim 4, wherein the soldering portion of the upper row of terminals is located at a rear end of the soldering portion of the lower row of terminals. The electrical connector of claim 4, wherein the rubber plate seals the tail portion of the upper end seat and the lower end seat, the welded portion of the upper row terminal and the lower row terminal, the rear end of the shielding case, the circuit board and A gap between the insulating housings. The electrical connector of claim 1, wherein the front end of the insulating housing is surrounded by a waterproof ring. An electrical connector manufacturing method includes the following steps: a first step of providing a body module and a shielding shell for holding a plurality of conductive terminals, and holding the shielding shell on the body module; Providing a circuit board and an insulative housing, soldering the circuit board and the plurality of conductive terminals to complete an electrical connection, and the insulating housing is sleeved on the shielding housing, and the end of the insulating housing is formed a plastic cavity extending rearwardly to the rear end of the body module, the tail portion of the shielding case and the tail end of the body module being received in the plastic cavity, so that the circuit board is partially received in the housing The inside of the cavity is partially exposed outside the cavity, and the third step is to provide a waterproof glue, inject the waterproof glue into the cavity, fill the entire cavity, and form a rubber plate after solidification. The rubber sheet is sealed between the inner surface of the adhesive cavity and the tail of the shielding shell, the tail end of the body module, and a portion of the circuit board received in the adhesive cavity. The method of manufacturing the electrical connector of claim 8, wherein the body module for holding the plurality of conductive terminals in the first step comprises an upper end seat, a lower end seat, a base, a metal reinforcement, and an upper a row of terminals and a row of terminals, firstly, the upper row of terminals and the lower row of terminals are integrally formed with the upper and lower end seats; secondly, the said The upper end seat and the lower end seat of the upper row terminal and the lower row terminal are sequentially disposed on the upper and lower ends of the metal reinforcing member; and finally, the base module is integrally formed with the base.