TWM479536U - Electrical connector - Google Patents

Description

Electrical connector

The present invention relates to an electrical connector, and more particularly to an electrical connector having a waterproof structure.

The Chinese patent CN201220003528.0 discloses a waterproof universal serial bus bar connector, which comprises an insulating body. The insulating body comprises a base body and a horizontal plate-shaped tongue protruding from the front end of the base body. There is a bayonet port under the tongue, and the lower surface of the tongue is open to the rear with a terminal slot extending forward and backward; a plurality of terminals are integrally formed on the insulative body; the metal casing is assembled on the outside of the insulative body, including a top plate, two side plates and a bottom plate, and two of the top plates The side is provided with an opening, the side plate defines a through hole, the through hole extends to the bottom plate, and the upper side hole wall of the through hole extends horizontally outward and then bends downward to form a welding arm; the outer casing is integrally formed in the metal casing and the insulating body The upper surface of the outer casing is provided with a square hole corresponding to the opening; the waterproof film is attached to the upper surface of the outer casing to cover the opening and the square hole. In the existing waterproof structure of the connector, the waterproof film is attached to the outer surface of the outer casing of the connector, and the fixing effect is poor and easy to fall off, resulting in failure of the waterproof function. In addition, the two welded arms are bent from the metal casing, resulting in a decrease in structural strength of the metal casing and an unfavorable improvement in watertightness of the metal casing. It can be seen that it is necessary to The waterproof structure of the electrical connector is improved.

The technical problem to be solved by the present invention is to overcome the deficiencies of the prior art described above, and an object of the present invention is to provide an electrical connector with improved waterproof performance.

The electrical connector of the present invention comprises: an insulative housing; a plurality of conductive terminals fixed to the insulative housing; a shield housing surrounding the insulative housing and forming a pair of cavities, the shield housing having a top wall The top wall is provided with at least one fastening hole; an insulative housing is overmolded on the outer circumference of the shielding housing, and the insulating housing is provided with at least one counterbore corresponding to the at least one fastening hole And at least one sealing piece fixed on the insulating housing, the counterbore of the insulating housing is provided with a flange protruding inwardly; the at least one sealing piece is at least partially sunkly mounted on the at least one The counterbore is engaged with the flange to close the at least one counterbore.

The at least one sealing sheet is suspended above the top wall of the shielding shell, and a lower surface of the at least one sealing sheet is spaced apart from the upper surface of the shielding shell at a periphery of the fastening hole.

The flange protrudes from the side wall of the counterbore toward the inside of the counterbore, and the mounting surface of the flange that cooperates with the sealing sheet is lower than the upper surface of the insulating casing.

The at least one sealing sheet is mounted to the mounting surface of the flange of the insulating housing by laser welding, wherein the at least one sealing sheet is made of a transparent plastic material; and the insulating housing is made of an opaque plastic material. production.

The electrical connector further includes a holding member, the holding member comprising a body and two soldering legs extending from two sides of the body, the holding member being integrally fixed with the insulating housing by insert molding.

The shielding shell further comprises two side walls and a bottom wall; the body of the holding member has a U shape, which is semi-enclosed and fixed to the outer side of the bottom wall and the two side walls of the shielding shell.

The shield housing further includes a soldering foot extending downwardly from a rear side of the top wall.

The insulative housing includes a base portion and a tongue plate extending forwardly from the base portion; the shielding housing further includes two side walls and a bottom wall, the shielding housing surrounding the outer periphery of the tongue plate to form the mating cavity, The number of the fastening holes, the counterbore and the sealing piece are two.

Each of the conductive terminals has a pair of joints extending into the mating cavity and a soldering portion extending from the insulative housing; the tongue of the insulative housing is provided with a plurality of terminal slots to correspond to the abutting portions for receiving the conductive terminals; The rear end of the insulating housing is provided with a protruding protrusion protruding rearward, and the bottom of the protruding block is provided with a plurality of terminal slots to provide guiding for the welding portions of the conductive terminals.

The at least one sealing sheet is completely sunk into at least one counterbore of the insulating housing in the thickness direction.

The utility model has the advantages that the electric connector can fix the sealing piece by providing a flange protruding inward in the counterbore and sinking the sealing piece into the counterbore of the insulating shell. It is not easy to fall off to improve the waterproof performance of the electrical connector.

10‧‧‧Electrical connector

20‧‧‧ boards

1‧‧‧Insulating body

11‧‧‧ base

12‧‧ ‧ tongue

121‧‧‧Terminal slot

2‧‧‧Electrical terminals

21‧‧‧Docking Department

22‧‧‧Weld Department

3‧‧‧Shield housing

31‧‧‧ top wall

32‧‧‧ side wall

33‧‧‧ bottom wall

34‧‧‧ soldering feet

35‧‧‧holding holes

4‧‧‧Insulated casing

41‧‧‧ top wall

411‧‧‧ upper surface

42‧‧‧ side wall

43‧‧‧ bottom wall

44‧‧‧ Back wall

45‧‧‧Bumps

451‧‧‧Terminal slot

46‧‧‧ housing trough

47‧‧‧Sinking

48‧‧‧Front

481‧‧‧Installation

5‧‧‧ holding parts

51‧‧‧Ontology

511‧‧‧floor

512‧‧‧ side panels

52‧‧‧welding feet

6‧‧‧ Sealing film

61‧‧‧ upper surface

9‧‧‧ docking chamber

Other features and effects of the present invention will be apparent from the following description of the drawings, wherein: FIG. 1 and FIG. 2 are two different perspective views of a preferred embodiment of the present electrical connector and the circuit board. 3 is a perspective view of a preferred embodiment of the present invention; FIG. 4 is a plan view of the preferred embodiment of the present invention; FIG. 5 is a cross-sectional view taken along line AA of FIG. 4; An exploded perspective view of a preferred embodiment of the electrical connector; and Figures 7 and 8 are further exploded perspective views of two different viewing angles of the preferred embodiment of the electrical connector of the present invention.

A preferred embodiment of the present invention will be further elaborated below with reference to the accompanying drawings.

Referring to Figures 1 through 8, the present invention provides a preferred embodiment of an electrical connector 10 that can be mounted submersibly to a circuit board 20. The electrical connector 10 generally includes: an insulative housing 1; a plurality of conductive terminals 2 fixed on the insulative housing 1; a shielded housing 3 surrounding the insulative housing 1 and forming a pair of cavities 9; An insulating outer casing 4 shielding the outer periphery of the casing 3; a holding member 5 fixed to the insulating outer casing 4; and two sealing sheets 6 mounted on the insulating outer casing 4.

Referring to FIG. 7 and FIG. 8, the insulative housing 1 is integrally injection molded, and includes a base portion 11 and a tongue plate 12 extending forwardly from the base portion 11. The lower side of the tongue plate 12 is provided with a plurality of terminal slots. 121.

Each of the conductive terminals 2 has a pair of joints 21 and a welded portion 22 . Referring to FIGS. 1 and 2, the solder portion 22 of the conductive terminal 2 may be soldered to the pad of the circuit board 20.

Referring to Figures 7 and 8, the shield case 3 is stamped and formed from a metal material. The shielding case 3 is formed on the outer periphery of the tongue 12 of the insulative housing 1 to form a pair of cavities 9 open at the front, and the abutting portion 21 of the conductive terminal 2 is received in the terminal groove 121 on the lower side of the tongue plate 12, thereby It is exposed in the docking chamber 9. Specifically, the shield case 3 includes a top wall 31, two side walls 32, and a bottom wall 33. The top wall 31 is provided with two latching holes 35 for the hooks of the other mating connector (not shown) to be fastened therein. In addition, the rear side of the top wall 31 is also bent downwardly to extend out of the two soldering legs 34. Referring to FIG. 1 and FIG. 2, the two soldering legs 34 can be soldered to the pads of the circuit board 20, so that the holding force of the circuit board 20 on the electrical connector 10 can be enhanced, and the soldering portion 22 and the circuit of the conductive terminal 2 can be prevented. Damage to the soldering relationship of the board 20 results in inability to transmit signals.

Referring to Figures 7 and 8, the insulative housing 4 is integrally injection molded on the outer periphery of the shield case 3 with an opaque plastic material to thereby wrap the shield case 3 therein. The insulating housing 4 includes a top wall 41, two side walls 42, a bottom wall 43 and a rear wall 44. The top wall 41 is provided with two counterbore holes 47 respectively communicating with the two latching holes 35 on the shield case 3. The bottom side wall of each counterbore 47 protrudes toward the inner portion of the counterbore 47 to project a flange 48. The mounting surface (upper surface) 481 of the flange 48 is lower than the insulating housing 4 (that is, the top) The upper surface 411 of the wall 41) is supported below the sealing sheet 6. In addition, the rear end of the insulative housing 4 (ie, the rear wall 44) is provided with a protrusion 45 protruding rearward, the protrusion A plurality of terminal slots 451 are provided at the bottom of the block 45 to provide guidance for the soldering portions 22 of the conductive terminals 2. In addition, the insulative housing 4 is also formed with a receiving groove 46 corresponding to the holding member 5. The receiving groove 46 has a U shape, and an opening is formed in the bottom wall 43 and the two side walls 42.

The holding member 5 is integrally formed by bending and forming a metal material, and is integrally fixed to the insulating case 4 by insert molding, and is correspondingly received in the receiving groove 46 of the insulating case 4. The holder 5 includes a body 51 and two soldering legs 52 extending from opposite sides of the body 51. Specifically, the body 51 has a U shape, and includes a bottom plate 511 and two side plates 512 extending upward from opposite sides of the bottom plate 511. The body 51 is semi-enclosed on the bottom wall 33 of the shielding case 3. And the outer sides of the two side walls 32, and can be attached to the shield case 3 to provide grounding. Referring to FIG. 5 , the bottom plate 511 is correspondingly attached to the bottom wall 33 of the shielding shell 3 , and the two side plates 512 are correspondingly attached to the two side walls 32 of the shielding shell 3 . Referring to Figures 1 and 2, the two soldering legs 52 can be soldered to the soldering holes of the circuit board 20 on both sides of the electrical connector 10, which can prevent the electrical connector 10 from shaking left and right.

Referring to FIG. 5, FIG. 6, FIG. 7 and FIG. 8, the sealing sheet 6 is preferably made of a transparent plastic material and is laser welded (of course, it can also be glued, heat-pressed or tightly fitted). Mounting surface 481 of the flange 48 of the insulating housing 4 is fixed or the like. In the case of laser welding, the laser can pass through the transparent sealing sheet 6 to reach the interface of the sealing sheet 6 and the mounting surface 481, wherein the non-transparent insulating shell 4 absorbs the laser energy, so that the plastic melts and is welded. together. Since the sealing sheet 6 is The thickness direction is at least partially sunk into the counterbore 47 of the insulative housing 4, so that the sealing sheet 6 can be restricted by the counterbore 47, and is less likely to slip or even fall off by the action of an external force. Preferably, the sealing sheet 6 is completely sunk into the counterbore 47 in the thickness direction, and the upper surface 61 of the sealing sheet 6 is flush with the upper surface 411 of the insulating housing 4 so as not to be subjected to an external force in the horizontal direction. The effect causes shedding. As shown in FIG. 5, the sealing sheet 6 is suspended above the top wall 31 of the shielding case 3, and the lower surface of the sealing sheet 6 is spaced from the upper surface of the shielding case 3 at the periphery of the locking hole 35. There is a gap (ie, the height of the flange 48) so that the hook of another mating connector (not shown) can be provided with a space for the hook of the other mating connector to be more securely hooked to the buckle. Hold the hole 35.

The assembly process of the electrical connector of the present invention generally includes: firstly bonding the conductive terminals 2 and the insulative housing 1 together (for example, overmolding the insulative housing 1 on the outer circumference of the conductive terminals 2 by insert molding, or Inserting the conductive terminals 2 into the insulative housing 1 in an inserted manner; and then assembling the conductive terminals 2 and the insulative housing 1 into the shielding case 3; 3 and the holding member 5 is mounted in an injection mold, and then the overmolded mold 4 is injection molded; finally, the two sealing sheets 6 are at least partially sunk into the two counter holes 47 provided to the insulating housing 4. Then, laser welding is performed to securely fix the sealing sheet 6.

Advantageous effects of the electrical connector 10 of the present invention include: by at least partially sinking the sealing sheet 6 into the counterbore 47 of the insulative housing 4, the sealing sheet 6 will be subjected to the counterbore 47, as compared to the prior art. Restricted, fixed and not easy to fall off; in addition, two soldering feet in front of the electrical connector 10 52 is extended from the holding member 5 instead of being bent and formed in the shield case 3 as in the prior art, which is advantageous for improving the watertightness and structural strength of the shield case 3.

It should be noted that, in other embodiments not shown in the drawings, the counterbore may be opened to be large, so that one counterbore can be correspondingly communicated with the two latching holes 35 at the same time, and correspondingly, the sealing sheet 6 The number can be reduced to one. In addition, in other embodiments not shown, the upper surface 61 of the sealing sheet 6 and the upper surface 411 of the insulating housing 4 may not be flush, for example, the upper surface 61 of the sealing sheet 6 is higher than the insulating housing 4. The upper surface 411, for example, the upper surface 61 of the sealing sheet 6 is lower than the upper surface 411 of the insulating housing 4, in order to ensure the bonding reliability of the sealing sheet 6 and the insulating housing 4, only the sealing sheet 6 is at least partially sunk into the The counterbore 47 of the insulating case 4 may be used. In addition, in the above preferred embodiment, for the convenience of laser welding, the sealing sheet 6 is made of a transparent material, and the insulating housing 4 is made of a non-transparent material; however, if other bonding means are used to fix the sealing sheet 6, the sealing sheet 6 is The material of the insulative housing 4 will be freely selectable.

However, the above is only a preferred embodiment of the present invention, and is not intended to limit the scope of the present invention, that is, the simple equivalent changes and modifications made in accordance with the scope of the present patent application and the contents of the patent specification, All remain within the scope of this new patent.

10‧‧‧Electrical connector

1‧‧‧Insulating body

2‧‧‧Electrical terminals

3‧‧‧Shield housing

31‧‧‧ top wall

32‧‧‧ side wall

33‧‧‧ bottom wall

35‧‧‧holding holes

4‧‧‧Insulated casing

411‧‧‧ upper surface

47‧‧‧Sinking

48‧‧‧Front

5‧‧‧ holding parts

511‧‧‧floor

512‧‧‧ side panels

52‧‧‧welding feet

6‧‧‧ Sealing film

61‧‧‧ upper surface

9‧‧‧ docking chamber

Claims (10)

An electrical connector includes: an insulative housing; a plurality of conductive terminals fixed to the insulative housing; a shield housing surrounding the insulative housing and forming a pair of cavities, the shield housing having a top wall, the shield housing The top wall is provided with at least one fastening hole; an insulative housing is overmolded on the outer circumference of the shielding housing, and the insulating housing is provided with at least one counterbore corresponding to the at least one fastening hole, a counterbore protruding inwardly of the insulating housing; and at least one sealing piece fixed to the insulating housing, the at least one sealing sheet being at least partially sunkly mounted on the at least one counterbore And engaging with the flange to close the at least one counterbore. The electrical connector of claim 1, wherein the at least one sealing sheet is suspended above the top wall of the shielding housing, and the lower surface of the at least one sealing sheet and the shielding housing are located at the periphery of the locking hole There is a gap between the upper surfaces. The electrical connector of claim 1 or 2, wherein the flange protrudes from the side wall of the counterbore toward the inside of the counterbore, the flange being matched with the sealing piece The mounting surface is lower than the upper surface of the insulating housing. The electrical connector of claim 1 or 2, wherein the at least one sealing sheet is fixed to the mounting surface of the flange of the insulating housing by laser welding, wherein the at least one sealing sheet is transparent Made of plastic material; the insulating case is made of opaque plastic material. The electrical connector of claim 1 or 2, further comprising a holding member, the holding member comprising a body and two soldering legs extending from two sides of the body, the holding member being inserted and formed The insulating housing is integrally fixed together. The electrical connector of claim 5, wherein the shielding housing further comprises two side walls and a bottom wall; the body of the holding member has a U shape, which is semi-enclosed and fixed to the shielding housing. The bottom wall and the outside of the two side walls. The electrical connector of claim 6, wherein the shield housing further comprises a solder leg extending downwardly from a rear side of the top wall. The electrical connector of claim 1 or 2, wherein the insulative housing comprises a base and a tongue extending forwardly from the base; the shield housing further comprising two side walls and a bottom wall, the shield The housing is surrounded by the outer circumference of the tongue plate to form the mating cavity, wherein the number of the fastening holes, the counterbore and the sealing sheet are two. The electrical connector of claim 8, wherein each of the conductive terminals has a pair of joints extending into the mating cavity and a soldering portion extending from the insulating housing; the insulating body has a plurality of tongues The terminal slot is corresponding to the abutting portion for receiving the conductive terminals; the rear end of the insulating housing is provided with a protrusion protruding rearward, and the bottom of the protruding block is provided with a plurality of terminal slots to correspond to the welding of the conductive terminals The department provides guidance. The electrical connector of claim 1 or 2, wherein the at least one sealing sheet is completely sunk into at least one counterbore of the insulative housing in a thickness direction.