CN106711667B

CN106711667B - Electrical connector

Info

Publication number: CN106711667B
Application number: CN201611099517.6A
Authority: CN
Inventors: 余阳阳; 仇金国
Original assignee: Foxconn Kunshan Computer Connector Co Ltd; Hongteng Precision Technology Co Ltd
Current assignee: Foxconn Kunshan Computer Connector Co Ltd; Hongteng Precision Technology Co Ltd
Priority date: 2016-12-02
Filing date: 2016-12-02
Publication date: 2020-09-25
Anticipated expiration: 2036-12-02
Also published as: CN106711667A; TWI739964B; TW201826638A

Abstract

An electric connector comprises an insulating body, a conductive terminal and a metal piece, wherein the conductive terminal and the metal piece are carried in the insulating body, the insulating body comprises a base part and a butt joint part, the conductive terminal comprises a contact part extending to the butt joint part and a pin extending out of the base part, the conductive terminal comprises a grounding terminal 20G, the grounding terminal is provided with a first welding part 24, and the metal piece is provided with a second welding part 34. The first welding part and the second welding part are combined together through spot welding, and the welding surfaces of the first welding part and the second welding part are covered with soldering tin. The invention realizes good welding by combining spot welding and soldering tin technologies, in particular to small component metal elements made of different materials.

Description

Electrical connector

[ technical field ] A method for producing a semiconductor device

The invention relates to an electrical connector.

[ background of the invention ]

Chinese utility model patent No. CN204809558U discloses a USB Type-C socket connector, it can supply two orientations to insert just anti-of the plug connector that corresponds. The socket connector comprises an upper row of terminals, a lower row of terminals and a metal shielding sheet positioned between the upper row of terminals and the lower row of terminals. The ground terminals and the shielding plate in the upper and lower rows of terminals respectively extend to form wing parts, and the wing parts are welded together. Spot welding techniques, particularly laser spot welding techniques, are widely used in Type-C, where the above-mentioned wings are typically spot welded together by laser. However, since the terminal is made of copper alloy and the shielding plate is made of stainless steel, the components and melting points of the two are different, and the spot welding technique may cause empty welding, so that good electrical connection between the grounding terminal and the shielding plate is not formed.

Therefore, there is a need to provide a new electrical connector to overcome the above-mentioned drawbacks.

[ summary of the invention ]

The invention aims to provide an electric connector which has a good welding effect.

The purpose of the invention is realized by the following technical scheme: an electric connector comprises an insulating body, a conductive terminal and a metal piece, wherein the conductive terminal and the metal piece are carried in the insulating body; the first welding part and the second welding part are combined together through spot welding, and the welding surfaces of the first welding part and the second welding part are covered with soldering tin.

The purpose of the invention is realized by the following technical scheme: an electric connector comprises an insulating body, a first metal piece and a second metal piece, wherein the first metal piece and the second metal piece are borne on the insulating body; the first welding part and the second welding part are combined together through spot welding, and the welding surfaces of the first welding part and the second welding part are covered with soldering tin.

Compared with the prior art, the invention realizes good welding by combining spot welding and soldering tin technologies, in particular to small component metal elements made of different materials.

[ description of the drawings ]

Fig. 1 is a perspective view of an electrical connector according to a first embodiment of the present invention.

Fig. 2 is an exploded perspective view of fig. 1.

Fig. 3 is a further exploded perspective view of the electrical connector of fig. 2.

Fig. 4 is a perspective view of the upper and lower rows of conductive terminals and metal plate of the electrical connector of fig. 3.

Fig. 5 is an exploded perspective view of the upper and lower conductive terminals and the metal plate of the present invention before they are soldered.

Fig. 6 is a perspective view of fig. 5 from another angle.

FIG. 7 is a side view of a second embodiment of the present invention showing the upper and lower rows of conductive terminals and the metal plate

The positional relationship.

Fig. 8 is a perspective view of a third embodiment of the invention with the metal shell removed.

Fig. 9 is a further exploded perspective view of fig. 8.

The following detailed description will further illustrate the invention in conjunction with the above-described figures.

[ detailed description ] embodiments

The invention provides a welding technology, which can well weld metal elements of two different materials by combining spot welding and soldering. Hereinafter, an embodiment of the electrical connector of the present invention will be described with reference to fig. 1 to 9.

Fig. 1 to 6 show a first embodiment of the present invention, in which an electrical connector 100 of the present embodiment is a USB Type-C receptacle connector mounted on a circuit board (not shown), the electrical connector 100 includes an insulative housing 10, conductive terminals 20 carried in the insulative housing, and a metal plate 30, the insulative housing 10 includes a base 11 and a mating tongue 12 extending from the base, the mating tongue has opposite mating surfaces 121, and the mating tongue 12 is provided with a thickened step 122 adjacent to the base. The conductive terminal 20 includes a contact portion 21 extending to the mating tongue portion and a pin 22 extending out of the base portion. The outer side of the insulating body 10 is covered with a metal shell, which includes an inner metal shell 41 and an outer metal shell 42, the inner metal shell 41 surrounds the docking tongue plate 12 to form a docking cavity 101 therebetween, and the outer metal shell 42 is welded to the top wall of the inner metal shell by spot welding, and extends out of two circuit board pins 421 and a rear wall 422. The outer peripheral surface of the base 11 is provided with a plurality of ribs 112 extending forward and backward, which interfere with the inner rear edge of the inner metal shell 41 to increase the interference holding force of the two.

The conductive terminals 20 are divided into two rows, an upper row of conductive terminals and an insulating material are injection molded to form a terminal module 10a, a lower row of conductive terminals 20b and an insulating material are injection molded to form another terminal module 10b, the two terminal modules clamp the metal plate 30 and then injection molded with an insulating material 10c (as shown in fig. 3), so that the insulating body 10 completely carrying the conductive terminals 20 and the metal plate 30 is formed, and two side edges of the metal plate extend out of the side faces of the butt-joint tongue plate 12 to form the locking side edges 31. As further shown in fig. 3 and 4, each row of conductive terminals includes two ground terminals 20G, a wing structure extends from a side of the ground terminal, the wing structure forms a first welding portion 24, and a wing structure extends from a side of the metal plate, the wing structure forms a second welding portion 34. In this embodiment, the first soldering portions 24 of the upper and lower ground terminals are respectively attached to the second soldering portions 34 and then soldered together, thereby forming a good electrical connection. The invention realizes good welding by combining spot welding and soldering tin. After the soldering, the upper surface of the first soldering portion 24 is spot-welded to leave the spot-weld shallow grooves 243, and the tin plating covers the soldering surfaces of the first and second soldering portions, as shown in an enlarged view of fig. 3, and the soldering process will be described in detail below.

Referring to fig. 5-6, the lower surface of the first soldering portion 24 of the upper row ground terminal 20G is a soldering surface 241, the opposite surface is a back surface 242, and the upper surface of the metal plate is a soldering surface 341. in the present invention, the soldering surface 341 of the metal plate is first coated (mainly by electroplating) with solder paste, as indicated by the mesh structure Sn shown in fig. 5. After the first soldering portion 24 is flatly attached to the soldering surface of the second soldering portion 34, spot welding, such as laser spot welding, is performed on the back surface 242, the solder paste is melted by the instantaneously generated high temperature, and the melted solder climbs onto the soldering surface 241 of the first soldering portion, thereby completing the soldering. To ensure smooth tin-climbing, a gold plating process may be performed on the soldering surface 241 (which may include other surfaces) of the first soldering portion, as shown in the mesh structure G shown in fig. 5. Similarly, the lower surface of the second soldering portion 34 of the metal plate is also a soldering surface 341, which is plated with a tin layer, and the ground terminal 20G of the lower row of conductive terminals is also soldered to the lower surface of the metal plate by spot welding. The invention combines the tin paste and the spot welding technology, and is very suitable for the structure of two metal pieces made of different materials. In this embodiment, the conductive terminal 20 is made of copper alloy, the metal plate 30 is made of stainless steel, both of which have different melting points from the metal, and the structure of spot welding and solder paste can meet the requirement of welding small components made of different materials. Of course, the combination of spot welding and solder paste can be applied to the same material.

Fig. 7 shows a second embodiment in which the front end of the ground terminal 20G is soldered to a metal plate by spot welding in combination with solder paste, a first soldering portion 25 extends from the front end of the ground terminal 20G, and a soldering surface of the first soldering portion is plated with gold; the second welding portion 35 is located at the front end of the metal plate, and both the upper and lower surfaces of the second welding portion are welding surfaces, and are subjected to tin plating treatment. By laser spot welding on the back surface 252 of the welding surface 251 of the first welding portion 25, the solder paste climbs onto the welding surface 251 of the first welding portion 25, thereby achieving welding.

Fig. 8 and 9 show a third embodiment, in which the butt-joint tongue plate 12 is provided with a thickened step portion 122 near the base, a metal half ring 50 covers the butt-joint surface of the step portion 122, the two ends of the metal half ring extend out of the second welding portion 56, the second welding portion is plated with a tin layer, the side surface of the ground terminal transversely extends out of a wing portion structure, the wing portion structure forms the first welding portion 26, and the surface of the first welding portion is plated with gold. The spot welding work is performed on the back surface of the first welding portion 26, and the solder paste of the second welding portion 56 is melted and overflows to the first welding portion 26, thereby welding the first welding portion to the second welding portion. In this embodiment, the upper mating surface 1221 of the step surface is not provided with a metal half ring, and only the lower mating surface 1222 of the step surface is provided with the metal half ring 50, so that the grounding function when mating with a plug can be satisfied, and the upper mating surface without the metal half ring provides a good hand feeling.

The welding technique of the invention is not limited to the above-described embodiment, and may be used for welding the metal shell and the ground terminal, or may be used for welding the metal shielding plate and the ground terminal in a plug connector, such as a USB Type-C plug connector. Therefore, the electrical connector of the present invention includes an insulative housing, a conductive terminal and a metal member (such as the aforementioned metal plate, metal shell, metal half ring, etc.) carried in the insulative housing, wherein the insulative housing includes a base portion and a mating portion, the conductive terminal includes a contact portion extending to the mating portion and a pin extending out of the base portion, the conductive terminal includes a ground terminal, the ground terminal has a first soldering portion, and the metal member has a second soldering portion; the first welding part and the second welding part are combined together through spot welding, and the welding surfaces of the first welding part and the second welding part are covered with soldering tin.

Of course, the method can also be applied to welding of the same materials, such as welding of power terminals in upper and lower row conductive terminals in a USB Type-C socket connector, such as welding of a metal shell and a shielding plate in a USB Type-C plug connector. The electric connector comprises an insulating body, a first metal piece and a second metal piece, wherein the first metal piece and the second metal piece are borne on the insulating body; the first welding part and the second welding part are combined together through spot welding, and the welding surfaces of the first welding part and the second welding part are covered with soldering tin.

The above description is only a part of the embodiments of the present invention, and not all embodiments, and any equivalent variations of the technical solutions of the present invention, which are made by those skilled in the art through reading the present specification, are covered by the claims of the present invention.

Claims

1. An electric connector comprises an insulating body, a conductive terminal and a metal piece, wherein the conductive terminal and the metal piece are borne in the insulating body, the insulating body comprises a base part and a butt joint part, the conductive terminal comprises a contact part extending to the butt joint part and a pin extending out of the base part, the conductive terminal comprises a grounding terminal, the grounding terminal is provided with a first welding part, the metal piece is provided with a second welding part, and the first welding part and the second welding part are made of different metal materials; the method is characterized in that: the first welding part and the second welding part are combined together through laser spot welding, the welding surface of the second welding part is plated with tin, the soldering tin climbs to the welding surface of the first welding part in the spot welding process, and the welding surfaces of the first welding part and the second welding part are respectively covered with the soldering tin.

2. The electrical connector of claim 1, wherein: the conductive terminals are made of copper alloy, and the metal plate is made of stainless steel.

3. The electrical connector of claim 2, wherein: the welding surface of the first welding part of the grounding terminal is plated with gold.

4. The electrical connector of claim 3, wherein: the first welding part is provided with a spot welding shallow groove on the back of the welding surface.

5. The electrical connector of claim 1, 2, 3 or 4, wherein: the butt joint part is a butt joint tongue plate extending from the base part, the butt joint tongue plate is provided with opposite butt joint surfaces, the contact parts of the conductive terminals are arranged on the butt joint surfaces of the butt joint tongue plate, and the metal piece is a metal plate positioned in the butt joint tongue plate.

6. The electrical connector of claim 5, wherein: the first welding part transversely extends out from the side surface of the grounding terminal, and the second welding part transversely extends out from the side surface of the metal plate.

7. The electrical connector of claim 5, wherein: the first welding part extends out of the front end of the grounding terminal, and the second welding part is located at the front end of the metal plate.

8. The electrical connector of claim 1, 2, 3 or 4, wherein: the conductive terminal is of a two-row structure, each row comprises grounding terminals which are aligned up and down, the second welding part is provided with two opposite welding surfaces, and the two first welding parts are respectively welded on the opposite welding surfaces of the second welding part.

9. The electrical connector of claim 1, 2, 3 or 4, wherein: the butt joint part is a butt joint tongue plate extending from the base part, the butt joint tongue plate is provided with opposite butt joint surfaces, a thickened step part is arranged near the base part of the butt joint tongue plate, the metal piece is a metal semi-ring covering the step part, and the second welding part extends out of two ends of the metal semi-ring.

10. An electric connector comprises an insulating body, a first metal piece and a second metal piece, wherein the first metal piece and the second metal piece are borne on the insulating body, the first metal piece is provided with a first welding part, the second metal piece is provided with a second welding part, and the first welding part and the second welding part are made of different metal materials; the method is characterized in that: the first welding part and the second welding part are combined together through laser spot welding, the welding surface of the second welding part is plated with tin, the soldering tin climbs to the welding surface of the first welding part in the spot welding process, and the welding surfaces of the first welding part and the second welding part are respectively covered with the soldering tin.