TWM537747U - Electrical connector - Google Patents

Description

Electrical connector

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

The Chinese patent CN201410186738.1 discloses a waterproof electrical connector, comprising: an insulating body comprising a rubber core and a tongue plate extending outward from the rubber core; a metal casing surrounding the insulating body And forming a mating space, wherein the metal shell is a seamless structure; a plurality of terminals are retained on the rubber core, one end of the terminal is positioned on the tongue plate, and the other end of the terminal is separated from the tongue plate by the rubber core a waterproof rubber disposed on a side of the rubber core facing away from the tongue plate, the waterproof rubber connecting the metal casing, the rubber core and the terminals; and a sealing rubber ring surrounding the metal The front end of the housing. The waterproof electrical connector is designed to have unnecessary adhesion between the soldering portion of the terminal and the waterproof rubber, and is easy to adversely affect the high-frequency transmission characteristics of the terminal, and is not suitable for an electrical connector that requires high-frequency and high-speed data transmission. For example, a USB TYPE-C full-featured electrical connector with a transmission rate of up to 10 Gbps.

The technical problem to be solved by the present invention is to overcome the above prior art There is a deficiency, and an electrical connector is proposed to avoid unnecessary adhesion between the soldered portion of the terminal and the sealant, and to reduce adverse effects on the high-frequency transmission characteristics of the terminal.

The present invention provides an electrical connector for the above technical problem, comprising: a metal casing, which is a seamless casing made by a metal injection molding process, and has a receiving cavity extending through the front and the rear; and an insulating body having Corresponding to a base disposed at a rear portion of the receiving cavity, a tongue extending forwardly from the base and located in the receiving cavity, and a protruding portion extending rearward from the receiving cavity by the base; a plurality of conductive terminals embedded in the insulative housing, each of the conductive terminals having a pair of joints exposed to the tongue and a soldering portion extending outward from the protrusion; and a sealant layer coated Applying to the rear surface of the base for sealing the rear end of the receiving cavity, wherein the protruding portion passes backward through the sealant layer.

In some embodiments, the protrusion is formed by a first protrusion and a second protrusion spaced apart from each other.

In some embodiments, the conductive terminals are divided into upper and lower groups and respectively disposed on upper and lower sides of the tongue plate, wherein the welded portion of the lower group of conductive terminals protrudes outward from the bottom of the first protruding portion. The welded portion of the upper set of conductive terminals protrudes outward from the bottom of the second protruding portion.

In some embodiments, the abutting portions of the upper set of conductive terminals and the lower set of conductive terminals are rotationally symmetrically distributed on upper and lower sides of the tongue.

In some embodiments, an intermediate shielding sheet is embedded in the tongue plate for spacing the abutting portions of the upper and lower sets of the conductive terminals, and the rear end of the intermediate shielding sheet extends downwardly to a partition. The plate position is between the first protruding portion and the second protruding portion, and the welded portions of the upper and lower sets of the conductive terminals are spaced apart from each other.

In some embodiments, a bottom side of the second protruding portion is flush with a bottom side of the first protruding portion, and ends of the welded portions of the conductive terminals all extend in a horizontal direction, and the first protruding portion is The bottom side of the second projection abuts over the end of the welded portion of the conductive terminals.

In some embodiments, the rear inner wall of the metal casing protrudes from a positioning structure, and the base of the insulating body is correspondingly provided with a locking structure that cooperates with the positioning structure.

In some embodiments, the positioning structure includes a blocking protrusion located at the front to restrict the forward movement of the insulating body relative to the metal casing; and a fastening protrusion located at the rear to limit the insulating body Moving backward relative to the metal casing.

In some embodiments, the positioning structure includes two blocking protrusions on the upper and lower sides and four fastening protrusions on the rear side, wherein each of the blocking protrusions is provided with two fastening protrusions, each buckle The end of the projection is flush with the end of the metal casing.

In some embodiments, at least one positioning leg is protruded downwardly from the bottom side of the metal casing for positioning the electrical connector relative to a circuit board.

Compared with the prior art, the present invention extends the insulating body backwards a protruding portion located behind the sealant, and the soldering portion of the conductive terminal protrudes outward from the protruding portion, thereby avoiding unnecessary adhesion between the soldered portion of the terminal and the sealant, and reducing the terminal High frequency transmission characteristics cause adverse effects.

10‧‧‧Electrical connector

1‧‧‧Metal casing

12‧‧‧ positioning feet

13‧‧‧Support

17‧‧‧ Positioning structure

171‧‧‧Blocking bumps

172‧‧‧holding protrusion

19‧‧‧ containment chamber

2‧‧‧Insulated body

21‧‧‧First insulator

213‧‧‧First extension

22‧‧‧Second insulator

223‧‧‧Second extension

23‧‧‧ Third insulator

24‧‧‧Base

25‧‧‧ tongue plate

26‧‧‧diffuse

27‧‧‧Locking structure

271‧‧‧Lock groove

272‧‧‧ holding groove

3‧‧‧Electrical terminals

31‧‧‧Second group of conductive terminals

32‧‧‧Upper set of conductive terminals

35‧‧‧Docking Department

36‧‧‧Welding Department

4‧‧‧Intermediate shielding film

41‧‧‧ Subject

42‧‧‧welding feet

43‧‧‧Baffle

44‧‧‧Limited holes

45‧‧‧Positioning holes

5‧‧‧Seal layer

6‧‧‧Composite subject

61‧‧‧ first module

62‧‧‧ second module

63‧‧‧ third module

20‧‧‧ boards

2031‧‧‧ pads

2032‧‧‧ pads

2042‧‧‧ pads

2012‧‧‧Positioning holes

Other features and effects of the present invention will be apparent from the following description of the drawings, in which:

1 is a perspective view of a preferred embodiment of the electrical connector of the present invention and a circuit board.

2 is an exploded perspective view of a preferred embodiment of the electrical connector of the present invention and a circuit board.

3 is a front elevational view of a preferred embodiment of the electrical connector of the present invention and a circuit board.

Figure 4 is a cross-sectional view taken along line A-A of Figure 3;

Figure 5 is a perspective view of a preferred embodiment of the electrical connector of the present invention.

Figure 6 is an exploded perspective view of a preferred embodiment of the electrical connector of the present invention.

7 and 8 are exploded perspective views of further two different perspectives of a preferred embodiment of the electrical connector of the present invention.

Figure 9 is a further exploded perspective view of a preferred embodiment of the electrical connector of the present invention.

Figure 10 is a further exploded perspective view of a preferred embodiment of the electrical connector of the present invention.

Although the present invention can be easily expressed in different forms of embodiment, The detailed description, which is illustrated in the drawings, and FIG As explained here.

Thus, a feature indicated in this specification is intended to illustrate one of the features of one embodiment of the present invention, and is not intended to suggest that each embodiment of the present invention must have the features described. Moreover, it should be noted that this specification describes a number of features. Although certain features may be combined together to illustrate possible system designs, these features are also applicable to other combinations not explicitly illustrated. Accordingly, the illustrated combinations are not intended to be limiting, unless otherwise indicated.

In the embodiments shown in the figures, the indication of directions (such as up, down, left, right, front and back) is used to explain that the structure and motion of the various elements of the present invention are not absolute but relative. These descriptions are suitable when the elements are in the positions shown in the figures. If the description of the position of these elements changes, the indications of these directions also change accordingly.

The preferred embodiments of the present invention are further elaborated below in conjunction with the drawings of the specification.

Referring to FIG. 1 to FIG. 10 , the present invention adopts a USB TYPE-C full-feature electrical connector as an example to provide an electrical connector 10 with better waterproof performance, comprising: a metal casing 1 inserted in the metal casing 1 An insulating body 2, a plurality of conductive terminals 3 embedded in the insulating body 2, and an intermediate shielding sheet 4 embedded in the insulating body 2 And a sealant layer 5 applied to the rear end of the joint of the insulating body 2 and the metal casing 1. The electrical connector 10 can be correspondingly mounted to a circuit board 20. The circuit board 20 is provided with a plurality of pads 2031, 2032, and 2042 that cooperate with the electrical connector 10. The circuit board 20 is further provided with two positioning holes 2012 that cooperate with the electrical connector 10.

The metal casing 1 is a seamless casing made by a Metal Injection Molding process. The metal casing 1 is provided with a receiving cavity 19 extending through the front and the rear. Two positioning legs 12 are protruded downwardly from the bottom side of the metal casing 1 so as to be inserted into the two positioning holes 2012 of the circuit board 20 to position the metal casing 1 relative to the circuit board 20. A support portion 13 is disposed on each side of the metal casing 1 for positioning the electrical connector 20 to a casing (not shown).

Referring to FIG. 7, the rear inner side wall of the metal casing 1 is convexly disposed with a positioning structure 17 inwardly. In this embodiment, the positioning structure 17 includes a blocking protrusion 171 located at the front to restrict the forward movement of the insulating body 2 relative to the metal casing 1 and a locking protrusion 172 located at the rear for limiting The insulative housing 2 moves rearward relative to the metal casing 1. Specifically, the positioning structure 17 includes two blocking protrusions 171 that are vertically opposed to each other, and four holding protrusions 172 that are located at the rear. Each of the blocking protrusions 171 is provided with two fastening protrusions 172. The end of each of the latching projections 172 is flush with the end of the metal casing 1 to facilitate the forward insertion of the insulative housing 2.

The insulative housing 2 includes a base 24 correspondingly disposed at a rear portion of the receiving cavity 19, and a tongue 25 extending forwardly from the base 24 and located in the receiving cavity 19, And a protruding portion 26 of the receiving cavity 19 is extended rearward from the base 24. The projecting portion 26 is composed of a first projecting portion 213 and a second projecting portion 223 which are spaced apart in the front-rear direction. The second protruding portion 223 protrudes rearward from the rear end of the base 24, and the bottom side of the second protruding portion 223 is flush with the bottom side of the first protruding portion 213. Referring to FIG. 8 , a locking structure 27 corresponding to the positioning structure 17 is disposed on the base 24 for locking the insulating body 2 and the metal casing 1 together. Specifically, the locking structure 27 includes two locking grooves 271 that cooperate with the blocking protrusions 171 and four locking grooves 272 that cooperate with the locking protrusions 172.

The functional definition of these conductive terminals 3 conforms to the standard of the USB TYPE-C full-featured connector, including four pairs of differential signal terminals for high-frequency high-speed signal transmission and two pairs of differential signal terminals for low-speed signal transmission. Each of the conductive terminals 3 has a pair of joint portions 35 exposed to the tongue plate 25 and a welded portion 36 projecting outward from the projecting portion 26. Specifically, the conductive terminals 3 are divided into upper and lower groups 31 and 32 and are respectively arranged on the upper and lower sides of the tongue plate 25. The abutting portions 35 of the upper group of conductive terminals 32 are electrically conductive with the lower group. The abutting portions 35 of the terminals 31 are rotationally symmetrically distributed on the upper and lower sides of the tongue plate 25, so that a two-way insertion function can be provided.

The soldering portion 36 of the lower group of conductive terminals 31 protrudes outward from the bottom of the first protruding portion 213 and can be soldered to the pad 2032 on the circuit board 20. The soldering portion 36 of the upper group of conductive terminals 32 protrudes outward from the bottom of the second protruding portion 223 and can be soldered to the pad 2031 on the circuit board 20. Welding portion 36 of these conductive terminals 3 The ends are both SMT (Surface Mount Technology) forms extending in the horizontal direction, and the first protrusions 213 and the bottom side of the second protrusions 223 abut against the soldering portions 36 of the conductive terminals 3 Above the end, preventing it from warping upwards.

The intermediate shielding sheet 4 includes a main body 41 interposed in the tongue plate 25 for spacing the abutting portions 35 of the upper and lower sets of the conductive terminals 31, 32 to reduce crosstalk, and the rear end of the main body 41 extends downward. Two grounding legs 42 and a partition 43 between the two grounding legs 42 are provided. The two grounding legs 42 can be soldered to the pads 2042 on the circuit board 20. The partition plate 43 is located between the first protruding portion 213 and the second protruding portion 223, so that the welded portions 36 of the upper and lower sets of the two conductive terminals 31, 32 can be spaced apart, which is advantageous for reducing crosstalk and improving electricity. The high frequency performance of the connector 10. The intermediate shielding sheet 4 is further provided with a limiting hole 44 and two positioning holes 45 which cooperate with the insulating body 2, thereby improving the firmness of the bonding.

Referring to Figures 9 and 10, it can be understood that the insulative housing 2, the conductive terminals 3 and the intermediate shielding sheets 4 are combined into a composite body 6. The insulative housing 2 is formed by combining a first insulator 21, a second insulator 22 and a third insulator 23. The first insulator 21 and the lower group of conductive terminals 31 are combined into a first module 61; the second insulator 22 is combined with the upper group of conductive terminals 32 to form a second module 62; the third insulator 23 and the intermediate shielding sheet 4 Combined into a third module 63. The first insulator 21 extends rearwardly from the first protruding portion 213. The second insulator 22 extends rearward The aforementioned second protruding portion 223.

The sealant layer 5 is coated on the rear surface of the base 24 to seal the rear end gap of the receiving cavity 19 to prevent water from infiltrating into the outside. The projection 26 passes rearwardly out of the sealant layer 5.

The manufacturing process of the new type of electrical connector 10 generally includes: inserting the lower set of conductive terminals 31 into the first insulator 21 by insert molding to form a first module 61, and embedding the upper set of conductive terminals 32 to the second insulator The second module 62 is formed in 22, and the intermediate shielding sheet 4 is embedded between the first module 61 and the second module 62 and injection molded to form the third module 63, thereby integrating the three modules into one body. The composite body 6 is inserted into the receiving cavity 19 of the metal casing 1 from the back to the front until the insulating body 2 and the metal casing 1 are locked together; finally, a sealant is applied to form the sealant. Layer 5.

Compared with the prior art, the present invention extends the insulating body 2 rearwardly from a protruding portion 26 located behind the sealant layer 5, and causes the welded portion 36 of the conductive terminal 3 to protrude outward from the protruding portion 26. It is possible to avoid unnecessary adhesion between the welded portion 36 of the conductive terminal 3 and the sealant, and to reduce adverse effects on the high-frequency transmission characteristics of the conductive terminal 3.

The above is only a preferred embodiment of the present invention, and is not intended to limit the embodiments of the present invention. Those skilled in the art can make corresponding modifications or modifications in a very convenient manner according to the main idea and spirit of the present invention. Scope of protection The scope of protection required by the scope of the patent application shall prevail.

10‧‧‧Electrical connector

1‧‧‧Metal casing

19‧‧‧ containment chamber

213‧‧‧First extension

223‧‧‧Second extension

24‧‧‧Base

25‧‧‧ tongue plate

26‧‧‧diffuse

35‧‧‧Docking Department

36‧‧‧Welding Department

41‧‧‧ Subject

43‧‧‧Baffle

5‧‧‧Seal layer

20‧‧‧ boards

Claims (10)

An electrical connector comprising: a metal casing, which is a seamless casing made of a metal injection molding process, and has a receiving cavity that is connected to the front and the rear; and an insulating body that is correspondingly mounted in the receiving cavity a base of the rear portion, a tongue extending forwardly from the base and located in the receiving cavity, and a protruding portion extending rearward from the receiving cavity; the plurality of conductive terminals are embedded On the insulative housing, each of the conductive terminals has a pair of joints exposed to the tongue and a weld extending outward from the projection; and a sealant layer applied to the base a surface for sealing a rear end of the receiving cavity, wherein the protruding portion passes backward through the sealant layer. The electrical connector of claim 1, wherein the protruding portion is formed by a first protruding portion and a second protruding portion spaced apart from each other. The electrical connector of claim 2, wherein the conductive terminals are divided into upper and lower groups and respectively disposed on upper and lower sides of the tongue plate, wherein the welded portion of the lower group of conductive terminals is formed by the first protruding portion The bottom portion projects outwardly, and the welded portion of the upper set of conductive terminals projects outward from the bottom of the second protruding portion. The electrical connector of claim 3, wherein the abutting portions of the upper set of conductive terminals and the lower set of conductive terminals are rotationally symmetrically distributed on upper and lower sides of the tongue plate. The electrical connector of claim 3, wherein an intermediate shielding piece is embedded in the tongue plate for spacing the abutting portions of the upper and lower sets of conductive terminals, the rear end of the intermediate shielding piece extending downward a partition, the partition is at the first Between the protruding portion and a second protruding portion, the welded portions of the upper and lower sets of the conductive terminals are spaced apart from each other. The electrical connector of claim 2, wherein a bottom side of the second protruding portion is flush with a bottom side of the first protruding portion, and ends of the welded portions of the conductive terminals all extend in a horizontal direction, The first projection and the bottom side of the second projection abut against the end of the welded portion of the conductive terminals. The electrical connector of claim 1, wherein the rear inner wall of the metal casing is convexly disposed with a positioning structure, and the base of the insulating body is correspondingly provided with a locking structure matched with the positioning structure. The electrical connector of claim 7, wherein the positioning structure comprises a blocking protrusion located at the front to restrict the forward movement of the insulating body relative to the metal housing; and a latching protrusion located at the rear, The invention is configured to restrict backward movement of the insulating body relative to the metal casing. The electrical connector of claim 8, wherein the positioning structure comprises two blocking protrusions on the upper and lower sides and four fastening protrusions located at the rear, wherein each of the blocking protrusions is provided with two buckles. Holding the projections, the ends of each of the fastening projections are flush with the ends of the metal casing. The electrical connector of claim 1, wherein the bottom side of the metal casing protrudes downwardly from at least one positioning leg for positioning the electrical connector relative to a circuit board.