TW201740634A - Electrical connector and method of making the same - Google Patents

Abstract

An electrical connector includes an insulative housing, a number of contacts retained in the housing, a shielding shell attached to the housing, and a metal shell connected to a printed circuit board. The housing includes a base portion and tongue portion. The electrical connector further has an insulative shell insert-molded with the metal shell. The insulative shell encloses the shielding shell to fix the metal shell to the shielding shell.

Description

Electrical connector and method of manufacturing same

The present invention relates to an electrical connector, and more particularly to an electrical connector that can be inserted and reversed and a method of manufacturing the same.

For a related art, please refer to a waterproof socket electrical connector disclosed in the Chinese Patent No. CN104538782A. The waterproof socket electrical connector comprises a rubber core housing, a mask housing, an insulating body and a sealing body. The rubber core housing includes a hollow opening and a plug side and a sealing side respectively located at two sides of the hollow opening. The mask housing is disposed within the hollow opening. The sealing body is formed on the sealing side to fill the gap between the rubber core housing and the mask housing. A waterproof electrical connector disclosed in Chinese Patent Publication No. CN104752888A. The electrical connector includes an insulative housing, a terminal, a mask housing, and a waterproof housing. The waterproof casing is sleeved on the mask housing. The waterproof casing is covered with a waterproof rubber ring. The rear end of the waterproof casing is provided with a set of joints, and the sleeve covers a tailgate at the rear end of the cover shell. The rear end of the insulating body and the sleeve of the waterproof casing collectively surround a filling cavity for filling the waterproof glue. A waterproof electrical connector disclosed in the Chinese Patent Application No. CN204289872U. The waterproof electrical connector includes an outer cover shell, a fixing component, a composite module and an insulative housing. The top plate of the fixing member is fixed to the outer cover case. The outer shroud shell and the fixing element are insert molded inside the insulative housing. In the prior art, such a waterproof design cannot completely conform to the metal casing of the electrical connector, and is liable to cause water leakage, liquid leakage, etc., thereby damaging the internal structure of the electrical connector. At the same time, the above waterproof casing cannot guarantee the positive position of the product, and the sub-housing is easy to be loosely connected with the main casing, and cannot be stably held. In addition, in some occasions, it is often necessary to install a protective retaining ring and a dust seal, and even add lubricating oil to prevent wear and tear, which is time-consuming and labor-intensive.

A waterproof electrical connector disclosed in Chinese Patent Publication No. CN103208698B. The electrical connector includes a metal housing, an insulative housing mounted in the metal housing, a terminal fixed to the insulative housing, and an insulative housing encased on the outside of the metal housing. The insulating housing is externally injection molded with a metal holder connected to the circuit board. In this type of design, the outer casing of the insulating casing is molded and held on the metal casing, which easily causes the casing to be intimately attached to the metal casing and is slippery.

Therefore, there is a need for an improved electrical connector to compensate for the above-discussed deficiencies in the prior art.

The main object of the present invention is to provide an electrical connector and a method of manufacturing the same that are waterproof and enhance the strength of the electrical connector.

The object of the present invention is achieved by the following technical solution: an electrical connector comprising an insulating body having a base and a tongue, a plurality of conductive terminals held on the insulating body, and sleeved outside the insulating body a shielding case and a metal case connected to the circuit board, the electrical connector further comprising a waterproof case integrally formed with the metal case, the waterproof case being sleeved outside the shielding case and making the metal The outer casing is fixedly coupled to the shielding housing.

The object of the present invention is achieved by the following technical solution 2: a method for manufacturing an electrical connector, comprising: a. forming a terminal module, comprising: an insulating body having a tongue and a conductive terminal fixed on the insulating body; a reinforcing member; b. providing a shielding shell, the shielding housing is disposed outside the terminal module; c. providing a metal housing, integrally forming a waterproof housing outside the metal housing; d. arranging the metal The outer casing and the waterproof outer casing are outside the shielding shell and the metal outer casing is fixedly coupled to the shielding shell.

The object of the present invention is achieved by the following technical solution 3: an electrical connector comprising an insulating body having a tongue plate, a plurality of conductive terminals held on the insulating body, and a shielding shell sleeved outside the insulating body And a waterproof casing that is wrapped around the shielding casing, the waterproof casing is formed with a receiving cavity, and the tongue plate extends forwardly out of the shielding casing and is received in the receiving cavity, and the waterproof casing is internally provided The inner wall of the waterproof casing is divided into a front inner wall and a rear inner wall, and the outer side of the shielding casing is fitted to the rear inner wall such that the front sill of the shielding casing abuts the step portion.

Compared with the prior art, the present invention has the following effects: when the metal piece is mounted on the second insulating body, the hook holds the side of the notch of the metal piece to make the metal piece vertical The direction is stably fixed to the second insulating body. After the metal piece is mounted on the second insulating body, the first insulating body is fixed to the second insulating body and the metal piece, so that the first insulating body, the second insulating body and the metal piece are stably held before the third insulating body is formed. The integration ensures the stability of the first insulating body and the metal piece and the second insulating body, and is convenient for mass production.

The first figure is a perspective assembled view of the electrical connector of the present invention connected to a circuit board.

The second figure is a perspective assembled view of the electrical connector of the present invention separated from the circuit board.

The third figure is a schematic perspective view of the electrical connector of the present invention with the waterproof housing removed.

The fourth figure is a schematic perspective view of the electrical connector of the present invention with the waterproof casing and the sealing ring removed and the metal casing removed.

The fifth figure is a three-dimensional diagram of the fourth figure seen from another direction.

The sixth figure is a perspective view of the fourth figure removing the metal casing and taking out the shielding casing.

The seventh figure is a three-dimensional diagram of the sixth figure viewed from another direction.

The eighth figure is a further exploded perspective view of the sixth figure.

The ninth diagram is a three-dimensional diagram of the eighth figure viewed from another direction.

Figure 11 is a perspective view showing the insulating body of the electrical connector of the present invention without an insulating block.

Figure 11 is a cross-sectional view of the electrical connector of the present invention taken along the line XI-XI in the second figure.

Hereinafter, a specific embodiment of the electrical connector 100 of the present invention will be described in conjunction with the first to eleventh drawings. The port in which the electrical connector 100 and the docking connector are plugged is defined as a plug end. The direction of the butting, the direction perpendicular to the butting direction, and the vertical direction perpendicular to the butting direction and the transverse direction are defined.

As shown in the first to third embodiments, the electrical connector 100 of the present invention is fixedly connected to the circuit board 200, and includes an insulative housing 1 and a conductive terminal 2 held in the insulative housing 1 and mounted in the insulative housing 1. The reinforcing member 3, the shielding case 4 covering the outside of the insulative housing 1, the metal case 5 covered on the shielding case 4, and the waterproof case 6 covered on the outside.

Referring to FIGS. 6 to 10 , the insulative housing 1 includes a base 11 and a tongue 12 extending forward from the base 11 . A rear end portion 13 is defined at a rear end of the base 11 . Referring to the first FIG. 0, the upper and lower surfaces of the rear end portion 13 are provided with a plurality of pressing grooves 131. The pedestal 11 is provided with a plurality of vertically extending through holes 111 near the rear end portion 13 for positioning the conductive terminals 2 while accommodating the glue circulation. The top end of the base 11 is provided with a groove 112. A pair of placement slots 113 are defined at the rear end of the base 11. The upper and lower surfaces of the tongue plate 12 are provided with a plurality of terminal slots 121 and hollow portions 122 provided around the terminal slots 121. The terminal slots 121 located on the upper and lower surfaces of the tongue plate 12 are partially misaligned to facilitate the pressing and positioning of the conductive terminals 2 by the mold. An empty notch 123 is disposed on both sides of the tongue plate 12, so that the outermost conductive terminal 2 is exposed from the empty notch 123, which is convenient for positioning the mold to prevent skewing during filling. The insulative housing 1 further includes an insulating block 14 integrally formed on the tongue plate 12. Referring to the tenth figure, the tongue plate 12 is disposed adjacent to the base 11 and is provided with a platform 124 formed by a horizontal extension, so that the mold block can be pressed when the insulating block 14 is formed, and the filling is prevented. The upper and lower surfaces of the tongue plate 12 are provided with a receiving groove 125 penetrating the terminal groove 121. The receiving slots 125 are disposed on both sides of the terminal slot 121 for convenient placement.

Referring to the seventh to ninth figures, the conductive terminal 2 is integrally formed with the insulative housing 1 and includes a first terminal 21 and a second terminal 22. The first terminal 21 includes a first contact portion 211 exposing the upper surface of the tongue plate 12 , a first holding portion 212 received in the base 11 , and a first soldering portion 213 extending outside the insulating body 1 . The second terminal 22 includes a second contact portion 221 exposing a lower surface of the tongue plate 12 , a second holding portion 222 received in the base 11 , and a second solder portion 223 extending outside the insulating body 1 . The first welded portion 213 and the second welded portion 223 are disposed on the same plane in a row. The first terminal 21 and the second terminal 22 are respectively eight and symmetrically distributed along a central axis extending forward and backward. The first contact portion 211 of the first terminal 21 and the second contact portion 221 of the second terminal 22 are vertically disposed correspondingly, and the first soldering portion 213 of the first terminal 21 and the second soldering portion 223 of the second terminal 22 are provided. Located in the same plane. Thereby, the electrical connection of the first contact portion 211 and the second contact portion 221 of the electrical connector 100 to the corresponding contact portion of the mating connector is ensured correctly and in alignment, regardless of whether the mating connector is inserted in the forward or reverse direction.

Referring to the sixth figure, the first contact portion 211 of the first terminal 21 and the second contact portion 221 of the second terminal 22 are provided with convex hulls 20 protruding to both sides. The convex hull 20 is received in the accommodating groove 125, and the convex hull 20 on each of the conductive terminals 2 is dislocated so that the mold can be pressed on the convex hull 20.

The reinforcing member 3 is provided in two pieces with a hollow in the middle. Each of the reinforcing members 3 includes a main body portion 31 held in the base 11 , a bent portion 32 bent from the rear end of the main body portion 31 , and a soldering foot formed by bending downward from the bent portion 32 . 33. The front end of the main body portion 31 of the reinforcing member 3 exposes the tongue 12 of the insulative housing 1 and is wrapped in the insulating block 14.

Referring to the first to ninth drawings, the shielding case 4 includes a top wall 41 and a bottom wall 42 which are disposed opposite each other and have an inner edge 40, and a pair of side walls 43 connecting the top wall 41 and the bottom wall 42. . Referring to the seventh figure, the rear end of the top wall 41 is provided with a first abutting portion 411 protruding inwardly, and the rear end edge of the bottom wall 42 is provided with a first abutting arm formed by bending downwardly. 421. The first abutting portion 411 is received in the recess 112 of the insulative housing 1 , and the first abutting arm 421 is received in the placement slot 113 of the insulative housing 1 to reinforce the shielding housing. 4 is fixed to the insulative housing 1. The bottom wall 42 is further provided with a pair of second abutting portions 422 protruding inwardly, and the second abutting portions 422 are abutted against the front end surface of the base 11 of the insulative housing 1 . Referring to the sixth to ninth figures, the first abutting portion 411 and the pair of second abutting portions 422 are three-pointed to prevent damage to the electrical connector 100 when the mating connector is excessively inserted. The shielding case 4 further has a tail portion 44 extending rearward from the top wall 41 and horizontally extending, and a connecting arm 45 connecting the tail portion 44 and the top wall 41. The tail portion 44 is higher than the top wall 41 in the up and down direction. A second abutting arm 441 is formed on the two sides of the tail portion 44 . The second abutting arm 441 abuts against the rear end surface of the rear end portion 13 of the insulative housing 1 . Referring to the fourth and fifth figures, the tail portion 44 is fitted to the upper surface of the rear end portion 13 of the insulative housing 1. An opening 450 is defined in the connecting arm 45. Referring to the fourth figure, the connecting arm 45 corresponds to the through hole 111, so that a part of the through hole 111 is exposed to the opening 450. The front end of the tongue plate 12 exposes the frame of the shielding case 4. The base 11 of the insulative housing 1 covers the rear cymbal of the shield housing 4 to enhance the sealing of the electrical connector 100. The top wall 41 and the bottom wall 42 of the shielding shell 4 are provided with a plurality of convex 423 protruding inwardly, and the convex hull 423 is in interference contact with the mating connector for grounding.

Referring to the first to fifth figures, the metal casing 5 is substantially covered in a flat shape on the shielding casing 4. Referring to the fourth and fifth figures, the metal casing 5 has a plurality of overflow holes 50 and a vent hole 51 provided behind the overflow hole 50. The exhaust hole 51 corresponds to the opening 450 of the shielding case 4 . The front end of the metal casing 5 is provided with a plurality of first bending legs 52, and the first bending legs 52 abut against the upper end surface of the top wall 41 of the shielding shell 4. The two sides of the metal casing 5 are respectively provided with a pair of first fixing legs 53 and a pair of second fixing legs 54 extending toward the two sides and extending downward, and the first fixing legs 53 and the first The second bending leg 55 between the two fixing feet 54. Referring to the third to fifth figures, the second bending legs 55 are clamped on both sides of the base 11 of the insulative housing 1. The first fixing leg 53 is lower than the second fixing leg 54 in the up and down direction. Referring to the third figure, the rear end of the metal casing 5 is welded to the tail portion 44 of the shielding casing 4. The second fixing leg 54 is suspended outside the tail portion 44 of the shielding shell 4 .

The waterproof casing 6 is integrally formed with the metal casing 5 and forms a receiving cavity 60. The receiving cavity 60 receives the tongue plate 12 to expose the portion where the shielding case 4 is exposed. Referring to the first and second figures, the rear end surface of the waterproof case 6 is located at the front end of the rear end portion 13 of the insulative housing 1 and the tail portion 44 of the shield case 4. Both sides of the waterproof casing 6 are provided with outwardly protruding protrusions 61 to enhance the strength of the electrical connector 100. The waterproof casing 6 fills the overflow hole 50 to enhance the holding force between the waterproof casing 6 and the metal casing 5. The first fixing leg 53 of the metal casing 5 is partially covered in the waterproof casing 6, and the waterproof casing 6 and the circuit board 200 are supported to reduce the integral formation of the waterproof casing 6 and the metal casing 5. The first fixing leg 53 is at risk of being unstable in size.

Referring to the eleventh figure, the waterproof casing 6 has a stepped portion 62 therein, so that the upper and lower inner walls of the waterproof casing 6 are divided into a pair of front inner walls 63 and a seat located at the front end of the step portion 62. A pair of rear inner walls 64 at the rear end of the step portion 62 are described. The distance between the pair of front inner walls 63 is smaller than the distance between the pair of rear inner walls 64. The top wall 41 and the bottom wall 42 of the shielding shell 4 are attached to the rear inner wall 64 such that the front end of the shielding shell 4 abuts the step portion 62 of the waterproof casing 6, and the shielding shell The inner edge 40 of the body 4 is flush with the front inner wall 63 of the waterproof outer casing 6. The casing of the waterproof casing 6 is inclined up and down, and the lower jaw protrudes from the upper jaw.

Referring to the second figure, the electrical connector 100 further includes a sealing portion 7 that is sealed at the rear end of the insulative housing 1. The sealing portion 7 is filled through the opening 450 of the shielding shell 4 and the through hole 111 of the insulating body 1 to fill the base 11 and the rear end portion 13 of the insulating body 1 and the waterproof housing 6 The gap is fully waterproof. When filling the glue, the vent hole 51 on the metal casing 5 can be used to exclude air in the glue flow passage.

The manufacturing method of the present invention is as follows: the metal plate is made into the conductive terminal 2 and the reinforcing member 3, the insulating body 1 is integrally formed outside the conductive terminal 2 and the reinforcing member 3, and the insulating block 14 is overmolded to block a gap on the insulative housing 1; the metal plate is formed as a shield case 4 and a metal case 5, the cover case 4 is sleeved outside the insulative housing 1, and the metal case 5 integrally forms the waterproof case 6; The waterproof casing 6 and the metal casing 5 are fitted outside the shielding casing 4, and the metal casing 5 and the shielding casing 4 are fixed by laser welding; and the opening 450 of the shielding casing 4 is used to form a glue. Sealing portion 7.

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

100‧‧‧Electrical connector

1‧‧‧Insulating body

11‧‧‧Base

111‧‧‧Perforation

112‧‧‧ Groove

113‧‧‧Place slot

12‧‧ ‧ tongue

121‧‧‧Terminal slot

122‧‧‧镂空部

123‧‧‧ Empty gap

124‧‧‧ platform

125‧‧‧ accommodating slot

13‧‧‧ Back end

131‧‧‧pressing trough

14‧‧‧Insulation block

2‧‧‧Electrical terminals

20‧‧‧ convex hull

21‧‧‧First terminal

211‧‧‧ first contact

212‧‧‧First Holding Department

213‧‧‧First Welding Department

22‧‧‧second terminal

221‧‧‧Second contact

222‧‧‧Second holding unit

223‧‧‧Second welding department

3‧‧‧Strength

31‧‧‧ Main body

32‧‧‧Bends

33‧‧‧ solder feet

4‧‧‧Shaded housing

40‧‧‧ inner edge

41‧‧‧ top wall

411‧‧‧First Responsible Department

42‧‧‧ bottom wall

421‧‧‧First Abutment Arm

422‧‧‧ Second Responsible Department

423‧‧‧ convex hull

43‧‧‧ side wall

44‧‧‧ tail

441‧‧‧second abutment arm

45‧‧‧Connecting arm

450‧‧‧ openings

5‧‧‧Metal casing

50‧‧‧Overflow hole

51‧‧‧ venting holes

52‧‧‧First bend foot

53‧‧‧First fixed foot

54‧‧‧Second fixed foot

55‧‧‧second bend foot

6‧‧‧Waterproof enclosure

60‧‧‧ containment chamber

61‧‧‧Bump

62‧‧‧Steps

63‧‧‧ front inner wall

64‧‧‧ After the inner wall

7‧‧‧ Sealing Department

200‧‧‧ boards

no

100‧‧‧Electrical connector

41‧‧‧ top wall

5‧‧‧Metal casing

50‧‧‧Overflow hole

52‧‧‧First bend foot

54‧‧‧Second fixed foot

6‧‧‧Waterproof enclosure

60‧‧‧ containment chamber

61‧‧‧Bump

Claims (10)

An electrical connector includes an insulative housing having a base and a tongue, a plurality of conductive terminals held on the insulative housing, a shielding housing sleeved outside the insulating body, and a metal housing connected to the circuit board. The electrical connector further includes a waterproof casing integrally formed with the metal casing, the waterproof casing being sleeved outside the shielding casing and fixedly connecting the metal casing to the shielding casing. The electrical connector of claim 1, wherein the metal housing is soldered to the shielding housing. The electrical connector of claim 1, wherein the metal casing is provided with a plurality of overflow holes, and the waterproof casing fills the overflow hole when the waterproof casing is integrally formed with the metal casing. The electrical connector of claim 1, wherein the waterproof housing is formed with a receiving cavity, and the tongue extends forwardly out of the shielding housing to be received in the receiving cavity. The electrical connector of claim 4, wherein the waterproof casing has a stepped portion inside and below, and the inner wall of the waterproof casing is divided into a front inner wall and a rear inner wall, and the shielding shell is externally attached. The rear inner wall is combined such that the front sill of the shielding shell abuts the step portion, so that the upper and lower inner edges of the shielding shell are flush with the front inner wall. The electrical connector of claim 1, wherein the rear end of the base is provided with a pair of placement slots, and the bottom rear edge of the shielding housing is provided with a plurality of first abutting arms extending upwardly and bent. The first abutting arm is received and held in the placement slot of the insulative housing. The electrical connector of claim 1, wherein the metal casing is provided with a plurality of first fixing legs and a plurality of second fixing legs extending to both sides and extending downwardly to be fixed to the circuit board. The first fixing leg is lower than the second fixing leg in an up-and-down direction, and the first fixing leg portion is covered in the waterproof casing. A method of manufacturing an electrical connector, comprising:
Forming a terminal module comprising an insulating body having a tongue plate and a conductive terminal and a reinforcing member fixed on the insulating body;
Providing a shielding shell that is sleeved outside the terminal module;
c. providing a metal outer casing, integrally forming a waterproof outer casing outside the metal outer casing;
d. locating the metal casing and the waterproof casing outside the shielding casing and fixing the metal casing to the shielding casing. An electrical connector includes an insulating body having a tongue plate, a plurality of conductive terminals held on the insulating body, a shielding case sleeved outside the insulating body, and a waterproof case wrapped around the shielding case, wherein The waterproof casing is formed with a receiving cavity, and the tongue plate extends forwardly out of the shielding shell to be received in the receiving cavity, and the waterproof casing is internally provided with a step portion to divide the inner wall of the waterproof casing For the front inner wall and the rear inner wall, the outer side of the shielding shell is fitted to the rear inner wall such that the front sill of the shielding shell abuts the step portion. The electrical connector of claim 9, wherein the shielding housing is provided with a plurality of convex bulges protruding inwardly, the convex hull is in interference contact with the mating connector, and the inner edge of the shielding housing is The front inner wall is flush.