TWI827843B - Electrical connector - Google Patents

Abstract

The invention discloses an electrical connector, including a terminal module, a housing and a waterproof glue. The terminal module includes an insulating body and a plurality of conductive terminals. The conductive terminal includes a holding section, a contact section and a welding section. The holding sections are fixed to the insulating body. The waterproof glue seals the gap between the terminal module and the housing. The holding sections of the conductive terminals pass through the waterproof glue backward. The holding sections are coated with nano-coating layer or coating with water resistance. In the present invention, because the outer surface of the holding section is coated with a nano-coating that enhances the binding force between the conductive terminal and the insulating body or a coating that enhances the water resistance of the conductive terminal, during the preparation of the electrical connector, the waterproof glue will not flow into the contact portions of the conductive terminals.

Description

electrical connector

The present invention relates to an electrical connector.

For previous related technical patents, please refer to the electrical connector announced in Mainland China Utility Model Patent No. CN207925719U. The electrical connector includes an insulating body with a tongue plate and a conductive terminal. The conductive terminal has a butt surface exposed to the tongue plate. The contact part, the mating surface of the tongue plate and the contact part of the conductive terminal are coated with a waterproof coating that will be partially removed after scratching. It can effectively prevent the contact parts of the conductive terminals from corroding and causing short circuit and fire between the contact parts of adjacent conductive terminals.

However, in the industrial production process, the electrical connector needs to be heated during the preparation process. After the heating treatment, the liquid waterproof glue is poured. The heating process will cause a gap between the conductive terminal and the insulating body. When pouring the waterproof glue, The waterproof glue will flow into the front end of the conductive terminal (the part in contact with the mating connector) through the gap, affecting the signal transmission of the electrical connector.

Therefore, a new electrical connector is urgently needed to improve the above problems.

The object of the present invention is to provide an electrical connector that can improve the waterproof function.

In order to solve the above technical problems, the present invention adopts the following technical solution: an electrical connector includes a terminal module, a shell and waterproof glue set outside the terminal module, the terminal module includes an insulating body and a A plurality of conductive terminals of the insulating body, the conductive terminal includes a holding part, a contact part extending forward from the holding part, and a welding part extending rearward from the holding part, the holding part is fixed to the insulating body, so The waterproof glue seals the gap between the terminal module and the housing. The holding part of the conductive terminal passes backward through the waterproof glue. The outer surface of the holding part is coated with a nano-coating or a water-resistant coating. layer.

Compared with the prior art, the present invention has the following beneficial effects: In the present invention, the outer surface of the conductive terminal holding part is coated with a nano-coating that enhances the binding force between the conductive terminal and the insulating body or a coating that enhances the water resistance of the conductive terminal. Ensure that the waterproof glue does not flow into the contact portion of the conductive terminal during the preparation of the electrical connector.

100: Electrical connector combination

1:Terminal module

11: Insulating body

111:Base

1111:Latching slot

112: docking department

113:Installation Department

1131: card holding block

1132:Insert slot

114:Stairway

115: Tongue

12:Conductive terminal

121: Holding Department

122:Contact Department

123:Welding Department

124: Upper surface

125: Lower surface

126:Side surface

13:Metal mask piece

2: Grounding piece

21:Lock part

3: Shell

31: docking cavity

4: Waterproof ring

5: Cover the back shell

51: Flat part

511:Insertion Department

52: Side panel part

521: Gap

6: Waterproof glue

7: Nano coating

The first figure is a perspective view of the electrical connector of the present invention; the second figure is a perspective view of the first figure from another angle; the third figure is an exploded perspective view of the first figure; the fourth figure is a partially exploded perspective view of the third figure; The fifth figure is a partially exploded three-dimensional view of the fourth figure from another angle; the sixth figure is a perspective view of the conductive terminals and the mask sheet; the seventh figure is a cross-sectional view along the dotted line VII-VII of the first figure; and the eighth figure is a section view of the first figure along the dotted line VII-VII; A cross-sectional view along the dotted line VIII-VIII.

Below, the specific implementation of the electrical connector assembly 100 of the present invention will be introduced with reference to the first to eighth figures. The port where the electrical connector assembly 100 is plugged into a mating connector (not shown) is defined as a plug end. Define the plug-in end as the front end and the plug-in direction as the front-to-back direction.

Please refer to the first to eighth figures. The electrical connector assembly 100 of the present invention includes a terminal module 1, a grounding member 2 installed on the terminal module 1, and a shell sleeved on the outside of the terminal module 1. body 3, a waterproof ring 4 surrounding the front end of the housing 3, a shielding back shell 5 fixed on the rear end of the terminal module 1, and waterproof glue 6. The waterproof glue 6 seals the terminal module 1 and the shell. The gap between bodies 3.

Referring to Figures 4 to 8, the terminal module 1 includes an insulating body 11 formed of plastic material, a plurality of conductive terminals 12 and a metal shielding piece 13 held in the insulating body 11.

The insulating body 11 includes a base 111 , a mating portion 112 extending forward from the base 111 , and a mounting portion 113 extending rearward from the base 111 . The mating portion 112 is provided with two upper and lower rows adjacent to the base 111 . The step portion 114 of the cloth and the tongue portion 115 located between the two step portions 114, the The tongue portion 115 protrudes forward from the step portion 114 . The base 111 is provided with a retaining groove 1111 for retaining the grounding member 2 . There are laterally protruding holding blocks 1131 on both sides of the mounting part 113, and an insertion groove 1132 recessed downward from the upper surface of the mounting part 113. Please refer to the fourth figure for details.

The conductive terminal 12 includes a holding portion 121 , a contact portion 122 extending forward from the holding portion 121 , and a welding portion 123 extending rearward from the holding portion 121 . The holding portion 121 is fixed to the insulative body 11 . Specifically, the holding portion 121 is fixed to the base portion 111 , the mounting portion 113 , and the butt portion 112 between the step portions 114 . The contact portion 122 is exposed to the butt portion 112 and is located in front of the step portion 114 . The waterproof glue 6 is located between the base part 111 and the mounting part 113 . The holding portion 121 of the conductive terminal 12 passes backward through the waterproof glue 6 . The holding part 121 is coated with a coating on its outer surface. The coating is a nano-coating 7 or a water-resistant coating, and the coating surrounds the holding part 121 . It should be noted that in the present invention, the holding portion 121 is only coated with a nano-coating 7 or a water-resistant coating adjacent to the interface between the insulating body 11 and the waterproof glue 6 . In order to facilitate the application of nano-coating 7 or a water-resistant coating, in this embodiment, the entire conductive terminal 12 is coated with a coating. It should be noted that in the process of preparing the electrical connector assembly 100, the terminal module 1 needs to be dried and then filled with liquid waterproof glue. In order to improve production efficiency and shorten the drying time, it is necessary to increase the drying temperature. Drying temperature. When the drying temperature is too high, a gap will appear between the conductive terminal 12 and the insulating body 11 . When liquid waterproof glue is poured, the waterproof glue will flow into the conductive terminal 12 through the gap and be exposed to the butt joint 112 The contact portion 122 thus affects the signal transmission of the electrical connector assembly 100. In this embodiment, it is preferably coated with a nano-coating 7, which will be introduced below as the nano-coating 7. However, the present invention is not limited to the nano-coating. Any layer can be used as long as it can prevent gaps between the conductive terminals 12 and the insulating body 11 when the terminal module 1 is baked at high temperature.

The outer surface of each conductive terminal 12 includes opposing upper and lower surfaces 124 and 125 and two side surfaces 126 connecting the upper and lower surfaces 124 and 125. The upper surface 124 of the contact portion 122 is exposed to the mating portion 112. The nano-coating 7 is coated on the upper and lower surfaces 124, 125 and both side surfaces 126 of the holding part 121. In order to facilitate the application of the nano-coating 7, the entire conductive terminals 12 are coated with the nano-coating 7. In the present invention, it is not limited to coating the nano-coating 7 on the integral holding part 121 or the integral conductive terminal 12. The technical solution is that the nano-coating 7 can also be coated on the holding part 121 held in the base part 111 and between the step part 114 and the tongue part 115, as long as the effect of the present invention is achieved.

In the present invention, the nanocoating 7 is obtained by soaking the conductive terminal 12 in a solution containing nanoparticles and then drying. Wherein, the components of the nanoparticles are inorganic materials and organic materials.

The grounding piece 2 is annular and fixed to the front end of the base 111 . The grounding piece 2 is provided with a locking portion 21 to lock with the buckling groove 1111 of the base 111 .

The housing 3 is fixed to the outer edge of the base 111 and surrounds the docking portion 112 . A docking cavity 31 for docking a common docking connector (not shown) is formed between the housing 3 and the docking portion 112 .

The shielding back shell 5 includes a flat plate portion 51 and side plate portions 52 extending downward from both sides of the flat plate portion 51 . The shielding back shell 5 is covered on the mounting portion 113 of the insulating body 11 . A notch 521 is formed in the side plate portion 52 , and the holding block 1131 on the mounting portion 113 is held in the notch 521 . The flat plate portion 51 is provided with a punched insertion portion 511 , and the insertion portion 511 is inserted into the insertion groove 1132 of the mounting portion 113 .

To sum up, the beneficial effect of the electrical connector assembly 100 of the present invention is that the outer surface of the holding part 121 of the conductive terminal 12 is coated with a nano-coating 7, and the nano-coating 7 can make the conductive terminal 12 and the The insulating bodies 11 are bonded more tightly, so that when the terminal module 1 is dried at high temperature, there will be no gap between the conductive terminals 12 and the insulating body 11 to ensure that when the liquid waterproof glue is poured , the waterproof glue will not flow into the contact portion 122 exposed on the butt portion 112 . In this way, the existing drying time of 1.5 hours at low temperature is increased to drying at high temperature for 10 minutes, which not only improves production efficiency, but also reduces the manpower and material resources required for production, thereby reducing costs. The water-resistant coating makes the surface of the conductive terminal 12 water-resistant to prevent the liquid waterproof glue from spreading, improve the yield of the prepared product, and ensure the quality of the product.

It should be noted that the above are only the best embodiments of the present invention, not all implementations. Any equivalent changes to the technical solutions of the present invention made by those of ordinary skill in the art after reading the description of the present invention are all considered as the basis of the present invention. covered by the patent application.

111:Base

113:Installation Department

114:Stairway

115: Tongue

121: Holding Department

122:Contact Department

123:Welding Department

13:Metal mask piece

3: Shell

31: docking cavity

4: Waterproof ring

5: Cover the back shell

6: Waterproof glue

7: Nano coating

Claims (9)

An electrical connector includes: a terminal module, which includes an insulating body and a plurality of conductive terminals fixed on the insulating body. The conductive terminals include a holding part, a contact part extending forward from the holding part, and a contact part extending forward from the holding part. The welding portion of the holding portion extends backward, and the holding portion is fixed to the insulating body; the housing is set outside the terminal module; and the waterproof glue seals the gap between the terminal module and the housing; Wherein, the holding part of the conductive terminal passes backward through the waterproof glue, the outer surface of the holding part is coated with a nano-coating or a water-resistant coating, and the holding part is only adjacent to the insulating body and The waterproof glue junction is coated with the above-mentioned coating, and the above-mentioned coating surrounds the holding part. The electrical connector according to claim 1, wherein the entire conductive terminal is coated with the above-mentioned coating. The electrical connector of claim 1, wherein the insulative body includes a base, a mating portion extending forward from the base, and a mounting portion extending rearward from the base, and the mating portion is provided adjacent to the base. The step part, the waterproof glue is located between the base part and the installation part, the contact part is exposed at the butt part and is located in front of the step part, and the holding part is fixed in the base part and the installation part. The electrical connector according to claim 3, wherein the outer surface of each conductive terminal includes opposing upper and lower surfaces and two side surfaces connecting the upper and lower surfaces, and the upper surface of the contact portion is exposed to the mating portion. , the nano-coating is coated on the upper and lower surfaces and both sides of the holding part. The electrical connector according to claim 1, wherein the nano-coating is obtained by immersing the conductive terminals in a solution containing nanoparticles and then drying. The electrical connector according to claim 5, wherein the components of the nanoparticles are inorganic materials and organic materials. The electrical connector according to claim 1, wherein the electrical connector includes a shielding back shell, The shielding rear shell covers the mounting part. The electrical connector according to claim 3, wherein the electrical connector includes an annular grounding member, and the grounding member is installed on the base. The electrical connector according to claim 3, wherein the housing is fixed to the outer edge of the base and surrounds the mating portion.

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