CN100555767C - Electric connector and manufacture method thereof - Google Patents

Abstract

An electrical connector and a manufacturing method thereof, the electrical connector includes an insulating body, a plurality of conductive terminals accommodated in the insulating body, a shielding shell covering the periphery of the insulating body, and a pair of pressing elastic pieces, wherein the shielding shell The insulating body is provided with a receiving space, the insulating body is provided with a tongue plate extending into the receiving space, the tongue plate is provided with a plurality of receiving grooves for receiving conductive terminals, and the pressing elastic piece is provided with a contact arm extending into the receiving space, The contact arm is used to match with the butt connector. The pressing shrapnel is made of stainless steel and integrated with the shielding shell by laser welding. In this way, the pressing shrapnel has high resistance to plugging and unplugging, which improves the insertion stability of the electrical connector.

Description

Electrical connector and manufacturing method thereof

【Technical field】

The invention relates to an electrical connector and a manufacturing method thereof.

【Background technique】

In order to ensure the stable insertion of the electrical connector and the mating plug to improve the stability of signal transmission, usually a pair of pressing shrapnels are provided on the shielding shell of the electrical connector. matching holes. The above-mentioned types of electrical connectors can refer to Universal Serial Bus (USB) connectors. The USB connectors in the prior art usually include an insulating body, a number of conductive terminals accommodated in the insulating body and a plurality of conductive terminals covered in the insulating body. The outer shielding shell, wherein, the shielding shell is provided with a receiving space and a pair of pressing elastic pieces respectively extending from the upper and lower surfaces of the shielding shell into the above-mentioned receiving space, and the pressing elastic pieces are used to connect with the docking plug In cooperation, the pressing elastic piece is stamped and formed by the shielding shell. However, with the frequent insertion between the docking plug and the USB connector, higher requirements are placed on the resistance to plugging and unplugging of the compression shrapnel. In order to solve the above problems, the industry often adopts a method of changing the compression shrapnel It is made of a material (such as stainless steel) with strong resistance to plugging and unplugging. However, since the resisting shrapnel is integrated with other parts of the shielding shell, the other parts of the shielding shell are bound to use the same resistance as the resisting shrapnel. The same material, so set, increases the cost of the electrical connector, which is not conducive to mass production.

Therefore, it is necessary to improve the existing electrical connector and its manufacturing method to overcome the above-mentioned defects.

【Content of invention】

The main purpose of the present invention is to provide a low-cost electrical connector and its manufacturing method.

In order to achieve the above object, the present invention adopts the following technical solutions: an electrical connector, which includes an insulating body, a conductive terminal held in the insulating body, and a shielding shell, wherein the shielding shell is provided with a receiving space and is located on the periphery of the receiving space. On the outer surface, the conductive terminal is provided with a contact portion extending into the receiving space, at least one outer surface of the shielding shell is provided with a first opening communicating with the receiving space, and the electrical connector is also provided with a The first resisting elastic piece on the housing is provided with a first contact arm corresponding to the first opening and extending into the receiving space.

A method of manufacturing an electrical connector, comprising the following steps: providing an insulating body; providing at least one conductive terminal, and holding the conductive terminal in the insulating body; providing a shielding shell, the shielding shell is provided with an outer surface and A storage space surrounded by surfaces, wherein at least one outer surface is provided with a first opening communicating with the storage space, and the conductive terminal is provided with a contact portion extending into the storage space; and a first resisting elastic piece is provided, and the first resisting The pressing elastic piece is welded on the shielding shell, and the first pressing elastic piece is provided with a first contact arm extending from the first opening into the receiving space.

Compared with the prior art, the first pressing elastic piece and the shielding shell of the present invention are provided separately, and the first pressing elastic piece and the shielding shell can be made of different materials, thereby reducing the cost of the electrical connector.

【Description of drawings】

FIG. 1 is a three-dimensional assembled view of the electrical connector of the present invention.

Fig. 2 is a three-dimensional assembled view of the electrical connector of the present invention from another angle.

FIG. 3 is an exploded perspective view of the electrical connector of the present invention.

FIG. 4 is an exploded perspective view of the electrical connector of the present invention from another angle.

【Detailed ways】

1 to 4, the electrical connector 100 of the present invention is a USB connector in this embodiment, and the electrical connector 100 includes: an insulating body 1, a conductive terminal 2 fixed in the insulating body 1, a shielding The housing 3 and a pair of pressing elastic pieces 4 matched with the shielding housing 3 .

The insulating body 1 includes a base 11 and a tongue 12 extending forward from the base 11. The base 11 is provided with a top surface 111, two side parts 112 and a rear surface 113, wherein the middle part of the top surface 111 is close to the rear surface 113 There is a protrusion 114 and notches 115 located at both ends of the protrusion 114, and the two sides 112 are provided with a holding groove 116 matching with the shielding shell 3; the tongue plate 12 is provided with a slightly lower than the top surface The upper end surface 121 of 111 and the lower end surface 122 opposite to the upper end surface 121 , the lower end surface 122 is provided with a plurality of parallel receiving grooves 123 , and these receiving grooves 123 further extend to the rear surface 113 of the base 11 .

The conductive terminal 2 includes a fixing portion 22, a contact portion 21 extending forward from one end of the fixing portion 22, and a welding portion 23 vertically bent from the other end of the fixing portion 22. The fixing portion 22 is connected to the base 11 of the insulating body 1 Hold each other, the contact portion 21 is accommodated in the receiving groove 123 and protrudes from the lower end surface 122 of the tongue plate 12 , and the welding portion 23 extends out of the insulating body 1 for soldering to a circuit board (not shown).

The shielding housing 3 is provided with a receiving space 34 and an outer surface located on the periphery of the receiving space 34 and directly connected with the receiving space 34. The outer surface includes an upper surface 31, a lower surface 32 and a connecting surface 31, 32. The two sides 33 , the receiving space 34 are surrounded by the upper and lower surfaces 31 , 32 and the two sides 33 , and the tongue plate 12 is located in the receiving space 34 . The upper and lower surfaces 31, 32 are respectively provided with two first and second openings 311, 321 and first and second bumps 312, 322 located at the rear ends of the first and second openings 311, 321. The upper surface The rear end of the 31 is also provided with a notch 313 matched with the bump 114, and a pair of protruding pieces 314 matched with the notch 115; the two side surfaces 33 are all provided with a support piece 331 extending into the receiving space 34, and with the The fixing piece 332 matched with the holding groove 116 .

The pressing elastic piece 4 includes first and second pressing elastic pieces 41 and 42 with the same structure, wherein the first pressing elastic piece 41 includes a first holding portion 411 and extends from both sides of the first holding portion 411 in the same direction. A pair of first contact arms 412, the first retaining portion 411 is provided with two first fitting holes 413 that cooperate with the first bump 312; the second resisting elastic piece 42 includes a second retaining portion 421, and a A pair of second contact arms 422 extending in the same direction on both sides of the second holding portion 421, the second holding portion 421 is provided with two second matching holes 423 matching with the second protrusions 322; Two contact arms 412 , 422 respectively extend from the first and second openings 311 , 321 into the receiving space 34 for mating with the mating connector.

Please refer to Figures 1 to 4, when assembling, first, install the conductive terminal 2 from the rear surface 113 of the insulating body 1 into the insulating body 1; secondly, insert the shielding shell 3 on the insulating body 1, wherein , the tongue plate 12 is located in the receiving space 34, the contact portion 21 of the conductive terminal 2 is accommodated in the receiving groove 123 and protrudes from the lower end surface 122 of the tongue plate 12; again, the pressing elastic piece 4 is installed on the shielding shell 3 , wherein, the first and second matching holes 413 and 423 of the first and second pressing elastic pieces 41 and 42 are respectively sleeved on the first and second bumps 312 and 322. At this time, the first holding part 411 is located on the upper part of the upper surface 31, and the second holding part 421 is located on the lower part of the lower surface, and the first and second contact arms 412, 422 respectively extend into the receiving space 34 from the first and second openings 311 and 321; finally , using laser welding technology to generate high-frequency friction between the first and second bumps 312 and 322 and the first and second matching holes 413 and 423 respectively, so that the first and second bumps 312 and 322 are melted on the first , The second matching holes 413, 423, so as to combine the pressing elastic piece 4 and the shielding shell 3 into one.

Compared with the prior art, the pressing shrapnel 4 is set separately from the shielding shell 3, and the pressing shrapnel 4 is made of stainless steel, so that the first and second contact arms 412, 422 have better elasticity and resistance to plugging and unplugging Performance; the shielding shell 3 is made of another metal material with a lower cost, and the pressing elastic piece is integrated with the shielding shell by laser welding, so that the manufacturing cost of the electrical connector is reduced.

In this embodiment, the electrical connector 100 is welded on the circuit board in a lying state (the length of the docking frame opening is greater than its height); indeed, in other embodiments of the present invention, the electrical connector can also be turned 90 degrees, that is, the The vertical shape (the length of the docking frame opening is less than its height) is welded on the circuit board. At this time, the pressing shrapnel 4 cooperates with the two sides of the shielding shell 3. The above structure can also achieve the purpose of the present invention.

Claims (10)

1. electric connector, it comprises insulating body, be immobilizated in conducting terminal and shielding casing in the insulating body, wherein shielding casing is provided with a receiving space and is positioned at the outer surface of receiving space periphery, described conducting terminal is provided with the contact site that extends in the receiving space, at least one outer surface of described shielding casing is provided with first opening that is communicated with receiving space, it is characterized in that: described electric connector also is provided with and is assembled in first on the shielding casing and compresses shell fragment, described first compresses shell fragment is provided with corresponding to first opening and extends into first contact arm in the receiving space, wherein, described shielding casing is provided with first salient point, described first compresses shell fragment is provided with first holding parts, and described first holding parts is provided with and first salient point, first mating holes of fixing mutually.

2. electric connector as claimed in claim 1 is characterized in that: described first contact arm is to extend from first holding parts to form.

3. electric connector as claimed in claim 2, it is characterized in that: described outer surface comprises a upper surface, described first holding parts is positioned at the top of upper surface, described first opening is two and all is arranged in the upper surface, described first contact arm also is two, and described first contact arm is to extend from the both sides of first holding parts to form.

4. electric connector as claimed in claim 2, it is characterized in that: described outer surface comprises a lower surface, described lower surface is provided with second opening and is positioned at second salient point of the second opening side, described electric connector is provided with one and compresses second of shell fragment with respect to first and compress shell fragment, described second compress shell fragment be provided with second salient point mutually fixing second mating holes and extend into second contact arm in the receiving space from second opening.

5. electric connector as claimed in claim 4 is characterized in that: described second compresses shell fragment is provided with one and is positioned at basifacial second holding parts of following table, and described second mating holes is arranged on second holding parts.

6. as any described electric connector in the claim 1 to 5, it is characterized in that: described first compresses shell fragment and shielding casing is made from a variety of materials.

7. electric connector making method, it comprises the steps: to provide insulating body; At least one conducting terminal is provided, conducting terminal is immobilizated in the insulating body; Shielding casing is provided, the receiving space that described shielding casing is provided with outer surface and is surrounded by outer surface, described outer surface is provided with first salient point, wherein, first opening that at least one outer surface setting is communicated with receiving space, described conducting terminal setting extend into the contact site in the receiving space; And provide first to compress shell fragment, this first is compressed shell fragment and be welded on the shielding casing, first compresses first contact arm that shell fragment is provided with first holding parts and extends from first holding parts, wherein, first holding parts is provided with and first salient point, first mating holes of fixing mutually, and described first contact arm extends in the receiving space from first opening.

8. electric connector making method as claimed in claim 7 is characterized in that: described first to compress shell fragment be that method with radium-shine welding is fixed on the outer surface of shielding casing.

9. electric connector making method as claimed in claim 7 is characterized in that: described outer surface comprises upper surface, lower surface and two sides, and described first compresses shell fragment is fixed on the upper surface, and lower surface is provided with second opening with respect to first opening; Also comprise in the above-mentioned steps provide one be welded in lower surface the bottom second compress shell fragment, second compresses the shell fragment setting extends into second contact arm in the receiving space from second opening.

10. electric connector making method as claimed in claim 7 is characterized in that: it is to make with different metal materials that described shielding casing and first compresses shell fragment, and wherein, described first compresses shell fragment is made by stainless steel.

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