CN205159615U - waterproof electrical connector - Google Patents

Abstract

The utility model discloses a waterproof electric connector, it includes: an insulator, the front end of which is formed with a tongue plate; the terminals are fixed in the insulator, contact parts of the terminals are exposed out of the outer surface of the tongue plate, and pin parts of the terminals extend out of the lower end face of the insulator; the shell is fixedly coated on the periphery of the insulator; a seamless metal shell is also inserted and fixed on the inner wall of the shell, and a socket is formed between the inner wall of the seamless metal shell and the tongue plate; the periphery of the shell is injection-molded with a plastic sleeve, the front end of the plastic sleeve is also wrapped on the periphery of the front port of the seamless metal shell, and the rear end of the plastic sleeve is also wrapped on the rear end part of the insulator. The periphery of the seamless metal shell is seamless, so that after the seamless metal shell is inserted and fixed on the inner wall of the shell, liquid can be effectively prevented from leaking from the inside and the outside, and a higher waterproof effect can be achieved. In addition, waterproof glue layer sealing terminal's pin portion and the gap between the insulator, and the plastic cover cladding is peripheral in whole product, so that the utility model discloses a waterproof performance is high.

Description

waterproof electrical connector

Technical field:

The utility model relates to the technical field of connector products, in particular to a waterproof electrical connector.

Background technique:

The electrical connector is a connecting bridge, which performs electrical connection and signal transmission between devices and devices, components and components, and system and system. It is a necessary basic component to form a complete system.

Current electrical connectors generally include an insulating base, a terminal group installed in the insulating base, and a metal shell fixed outside the insulating base. A pair of plug-in spaces, wherein the pins of the terminals in the terminal group are exposed outside the insulating seat, and the contact parts of the terminals in the terminal group are exposed on the surface of the tongue plate, so as to facilitate connection with the external connector.

If the user uses the electronic device equipped with the above-mentioned electrical connector in wet weather, or accidentally knocks over the water container (such as a water cup) located around the electronic device, the external moisture and humidity will pass through the electronic device. The gaps in the electrical connectors penetrate into the interior of each electronic device, causing the precision electronic components in each electronic device to be short-circuited or corroded due to contact with water or moisture, causing great distress to users.

In order to solve the above problems and achieve a waterproof effect, developers generally coat the outer surface of the metal shell of the assembled electrical connector with waterproof glue, and then put a plastic sleeve on it to solve the problem of bending and covering the metal shell on the surface of the metal shell. For insulators, the gap between the two ends of the metal shell tail is fixed, and the plastic sleeve is combined with waterproof glue to achieve waterproofing. However, this method can only stay at a lower waterproof level. Specifically, after the plastic sleeve is set on the outer surface of the metal shell, there will be more or less gaps between the plastic sleeve and the metal shell. However, water will still come from The gap penetrates, that is to say, the entire electrical connector is only protected by a layer of waterproof glue. After long-term use, the waterproof glue is likely to fail, so that there is a greater risk. Therefore, the waterproof effect of the electrical connector with the above structure is still not ideal, which is not conducive to improving market competitiveness.

In view of this, the inventor proposes the following technical solutions.

Utility model content:

The purpose of the utility model is to overcome the deficiencies of the prior art and provide a waterproof electrical connector.

In order to solve the above-mentioned technical problems, the utility model adopts the following technical scheme: the waterproof electrical connector includes: an insulator, a tongue plate is formed at the front end of the insulator; a plurality of terminals are fixed in the insulator, and the contact part of the terminal Exposed on the outer surface of the tongue plate, the pin portion of the terminal protrudes from the lower end surface of the insulator; a shell, which is fixed and covered on the periphery of the insulator; a seamless metal shell is inserted and fixed on the inner wall of the shell, the seamless A socket is formed between the inner wall of the metal shell and the tongue plate; the outer periphery of the shell is also injection-molded with a plastic sleeve, and the front end of the plastic sleeve is also coated on the periphery of the front port of the seamless metal shell, and the rear end of the plastic sleeve is also coated on the insulator backend part.

Furthermore, in the above technical solution, a waterproof adhesive layer is provided on the lower end surface of the insulator, and the waterproof adhesive layer seals the gap between the pin portion of the terminal and the insulator, and the rear end of the plastic sleeve also covers the on the outer surface of the waterproof adhesive layer.

Furthermore, in the above technical solution, a waterproof ring is installed on the periphery of the front end of the plastic sleeve.

Furthermore, in the above technical solution, a ring groove square groove is arranged on the front periphery of the plastic sleeve; the inner side of the waterproof ring has a flat inner flange, and the inner flange is engaged and fixed in the ring groove square groove middle.

Furthermore, in the above technical solution, the outer side of the waterproof ring has an arc-shaped outer flange.

Further, in the above technical solution, the front port of the seamless metal shell is formed with a convex ring protruding outward; A groove is formed between the front end of the casing and the protruding ring.

Furthermore, in the above technical solution, the shell and the seamless metal shell are also fixed by welding.

Furthermore, in the above technical solution, a lug is formed on the outside of the plastic sleeve, and the lug has a through hole.

Further, in the above technical solution, the insulator includes a lower insulating base, an upper insulating base fixedly installed on the lower insulating base, a metal partition installed between the lower insulating base and the upper insulating base, and a metal partition installed on the lower insulating base, The insulating upper seat and the end block at the front end of the metal partition; the plurality of terminals include a plurality of first terminals and a plurality of second terminals, wherein the first terminal is integrally fixed in the insulating lower seat, and the second terminal is integrally fixed in the insulating upper seat middle.

Furthermore, in the above technical solution, upper and lower grounding plates are mounted on the outer periphery of the insulating upper base and the insulating lower base, which are fastened and fixed to each other, and the upper and lower grounding plates or the lower grounding plate are in contact with the metal partition.

After adopting the above technical solution, the utility model has the following beneficial effects compared with the prior art:

1. There are no gaps around the periphery of the seamless metal shell in this utility model, so that after the seamless metal shell is inserted and fixed on the inner wall of the shell, it can effectively prevent liquid from leaking from inside and outside, and can achieve a higher level of waterproof effect .

2. Since the plastic sleeve is fixed on the shell by injection molding, and the front end of the plastic sleeve also covers the periphery of the front port of the seamless metal shell, and the rear end of the plastic sleeve is also coated on the rear end of the insulator, this structure can Further improve the waterproof performance of the product.

3. The utility model is provided with a waterproof adhesive layer on the lower end surface of the insulator, and the waterproof adhesive layer seals the gap between the pin part of the terminal and the insulator, and the rear end of the plastic sleeve is also covered outside the waterproof adhesive layer On the surface, this structure can limit the leakage of liquid from the pins of the terminal into the interior of the electrical connector, so that it has a higher waterproof effect and further improves the waterproof performance of the product.

4. In the utility model, the inner flange on the inner side of the waterproof ring and the plastic sleeve are more tightly bonded, and the combination is relatively stable, and the outer side of the waterproof ring has an arc-shaped outer flange, which can make the utility model install Interference is formed on the casing of electronic products or equipment to achieve a perfect seamless combination, so that the waterproof ring of this structure can effectively prevent liquid from penetrating from the periphery of the plastic sleeve, so as to improve the waterproof performance of the utility model after assembly.

Description of drawings:

Fig. 1 is a perspective view of the utility model;

Fig. 2 is the bottom view of the utility model;

Fig. 3 is a three-dimensional exploded view of the utility model;

Fig. 4 is the structural representation of the non-injection plastic sleeve of the utility model;

Fig. 5 is an assembly diagram of the insulator and the first and second terminals in the utility model;

Figure 6 is an exploded view of Figure 5;

Fig. 7 is a perspective view after disassembling the upper and lower grounding plates in Fig. 5 .

Explanation of reference signs:

100 insulator 10 socket

101 tongue plate 102 waterproof adhesive layer

103 end block 2 housing

20 tank body 21 tabs

3 seamless metal shell 31 convex ring

4 plastic sleeve 41 waterproof ring

411 inner flange 412 outer flange

42 ring groove square groove 43 lug

431 through hole 5 insulation lower seat

51 installation position 511 limit slot

512 positioning buckle 52 lower convex plate

6 insulating upper seat 61 bosses

611 card slot 62 upper convex plate

7 metal partition 71 protruding part

72 welding feet 81 first terminal

82 second terminal 91 upper grounding plate

92 lower grounding plates

detailed description:

Below in conjunction with specific embodiment and accompanying drawing, the utility model is further described.

As shown in Figures 1-3, it is a waterproof electrical connector, which includes an insulator 100, a plurality of terminals fixed in the insulator 100, a housing 2 fixed and covered on the outside of the insulator 100, inserted and fixed in the housing 2 The seamless metal shell 3 in the inner wall and the plastic sleeve 4 injection-molded on the outer periphery of the shell 2, wherein a tongue plate 101 is formed at the front end of the insulator 100, and a tongue plate 101 is formed between the inner wall of the seamless metal shell 3 and the tongue plate 101 There is a socket 10, and the socket 10 is used for mating with an external connector.

The seamless metal shell 3 is integrally stamped and formed by a metal sheet, and there is no gap around its periphery, so that after the seamless metal shell 3 is inserted and fixed on the inner wall of the shell 2, it can effectively prevent liquid from leaking from inside and outside, and can achieve A higher level of water resistance. In addition, since the plastic sleeve 4 is fixed on the housing 2 by injection molding, and the front end of the plastic sleeve 4 also covers the periphery of the front port of the seamless metal shell 3 , and the rear end of the plastic sleeve 4 is also coated on the back of the insulator 100 The end part, this structure can further improve the waterproof performance of the product.

The contact portion of the terminal is exposed on the outer surface of the tongue plate 101 , and the pin portion of the terminal protrudes from the lower end surface of the insulator 100 .

The lower end surface of the insulator 100 is provided with a waterproof adhesive layer 102, the waterproof adhesive layer 102 seals the gap between the pin portion of the terminal and the insulator 100, and the rear end of the plastic sleeve 4 is also covered by the waterproof adhesive layer 102 outer surface, this structure can limit the leakage of liquid from the pin part of the terminal into the interior of the electrical connector, so that it has a higher waterproof effect and further improves the waterproof performance of the product.

A waterproof ring 41 is installed on the outer periphery of the front end of the plastic sleeve 4 . Specifically, the front periphery of the plastic sleeve 4 is provided with a square ring groove 42; the inner side of the waterproof ring 41 has a flat inner flange 411, and the inner flange 411 is engaged and fixed in the square ring groove. 42, and the fit between them is tighter, and the combination is more stable. In addition, the outer side of the waterproof ring 41 has an arc-shaped outer flange 412, and the outer flange 412 can form a limit interference when the utility model is installed in the casing of an electronic product or equipment, so as to achieve perfect seamlessness combination, so that the waterproof ring 41 of this structure can effectively prevent liquid from infiltrating around the periphery of the plastic sleeve 4, so as to improve the waterproof performance of the utility model after assembly.

As shown in FIG. 4 , the front port of the seamless metal shell 3 is formed with a protruding ring 31 protruding outward; The ring 31 is in contact, so that a groove 20 is formed between the front end of the housing 2 and the protruding ring 31 . Since the plastic sleeve 4 is fixed on the housing 2 by injection molding, the plastic sleeve 4 will form a protruding ring to snap into the groove body 20, so that the connection between the plastic sleeve 4 and the housing 2 and the seamless metal shell 3 is more efficient. Stable, can increase the service life of the product.

The seamless metal shell 3 is fixed on the inner wall of the shell 2 by inserting, and the shell 2 and the seamless metal shell 3 are also fixed by laser spot welding, so that the connection between them is more stable.

Referring again to FIG. 3 , a lug 43 is formed on the outer side of the plastic sleeve 4 , and the lug 43 has a through hole 431 .

5 and 6, the insulator 100 includes an insulating lower seat 5, an insulating upper seat 6 fixedly installed on the insulating lower seat 5, and a metal partition 7 installed between the insulating lower seat 5 and the insulating upper seat 6. Installed on the end block 103 at the front end of the insulating lower seat 5, the insulating upper seat 6 and the metal partition 7; the plurality of terminals include a plurality of first terminals 81 and a plurality of second terminals 82, wherein the first terminals 81 are integrally fixed on the insulating In the lower seat 5 , the second terminal 82 is integrally fixed in the insulating upper seat 6 .

The upper end of the insulating lower seat 5 is formed with a mounting position 51 for assembling the metal partition 7 and the insulating upper seat 6, wherein, the inner walls on both sides of the mounting position 51 are provided with limiting grooves 511, and positioning cards are arranged in the limiting grooves 511 Buckle 512 ; bosses 61 are provided on both sides of the insulating upper seat 6 , and card slots 611 are arranged on the bosses 61 . After the insulating upper seat 6 is assembled on the installation position 51 on the upper end of the insulating lower seat 5, the bosses 61 on both sides of the insulating upper seat 6 are inserted into the limiting grooves 511 on the inner walls of the two sides of the installation position 51, and the card slots on the boss 61 611 and the positioning buckle 512 of the limiting groove 511 are engaged and positioned with each other, so that the insulating upper seat 6 is stably assembled in the insulating lower seat 5 .

As shown in Fig. 7, a lower convex plate 52 is formed on the front end of the lower insulating seat 5, and an upper convex plate 62 is formed on the front end of the upper insulating seat 6, and the upper convex plate 62 and the lower convex plate 52 are respectively attached to the The upper and lower end faces of the metal partition 7, and the end block 103 is fixed on the front end of the upper convex plate 62 and the lower convex plate 52 and the metal partition 7, so that the upper convex plate 62 and the lower convex plate 52 are matched at the end Block 103 constitutes said tongue plate 101 .

Protruding parts 71 are formed on both sides of the metal partition 7 , and the protruding parts 71 respectively protrude outside the insulating lower seat 5 and the insulating upper seat 6 . The rear end of the metal partition 7 is also provided with a welding foot 72 , and the welding foot 72 is exposed outside the lower end surface of the insulating lower seat 5 .

The rear end of the insulating lower base 5 is also provided with a terminal hole through which the pin portion of the second terminal 82 and the welding foot 72 at the rear end of the metal partition 7 pass.

As shown in Figures 5 and 6, upper and lower grounding plates 91 and 92 are mounted on the periphery of the insulating upper seat 6 and the insulating lower seat 5, which are fastened and fixed to each other. 7 contacts, the upper and lower grounding plates 91, 92 can reinforce the structure of the insulating upper seat 6 and the insulating lower seat 5.

When the utility model is assembled, the metal partition 7 and the insulating upper seat 6 are first fixed on the insulating lower seat 5 in turn, and then the end block 103 is fixed on the insulating lower seat 5, the insulating upper seat 6 and the front end of the metal partition 7 to form the The above-mentioned insulator 100, wherein, the pins of the first and second terminals 82 and the welding feet 72 at the rear end of the metal separator 7 are all exposed on the lower end surface of the insulating base 5; then the housing 2 is fixed and covered on the outside of the insulator 100 , and insert the seamless metal shell 3 into the inner wall of the housing, and fix it by laser spot welding to form a semi-finished product, wherein the seamless metal shell 3 has a very high level of waterproof effect. A waterproof adhesive layer 102 is coated on the lower end surface of the insulating lower seat 5 to seal the pins of the first and second terminals 82 and the solder feet 72 at the rear end of the metal partition 7 to further improve the waterproof effect; A plastic sleeve 5 is injection molded outside the body 2, and the plastic sleeve 5 covers the entire product to achieve a better waterproof effect and further improve the waterproof effect. Finally, the waterproof ring 41 is sleeved on the front end of the plastic sleeve 5 to form a complete product.

Of course, the above descriptions are only specific embodiments of the utility model, and are not intended to limit the implementation scope of the utility model. Should be included in the utility model patent scope.

Claims (10)

1. Waterproof electrical connectors, including: An insulator, the front end of the insulator is formed with a tongue plate; A plurality of terminals, which are fixed in the insulator, and the contact portion of the terminal is exposed on the outer surface of the tongue plate, and the pin portion of the terminal protrudes from the lower end surface of the insulator; A shell, which is fixed and covered on the periphery of the insulator; It is characterized in that: the inner wall of the housing is also inserted and fixed with a seamless metal shell, and a socket is formed between the inner wall of the seamless metal shell and the tongue plate; a plastic sleeve is injection molded on the periphery of the housing, and the plastic sleeve The front end also covers the periphery of the front port of the seamless metal shell, and the rear end of the plastic sleeve also covers the rear end part of the insulator. 2. The waterproof electrical connector according to claim 1, characterized in that: the lower end surface of the insulator is provided with a waterproof adhesive layer, and the waterproof adhesive layer seals the gap between the pin part of the terminal and the insulator, and the The rear end of the plastic sleeve is also covered on the outer surface of the waterproof adhesive layer. 3. The waterproof electrical connector according to claim 1, wherein a waterproof ring is installed on the outer periphery of the front end of the plastic sleeve. 4. The waterproof electrical connector according to claim 3, characterized in that: the outer periphery of the front end of the plastic sleeve is provided with a ring groove square groove; the inner side of the waterproof ring has a flat inner flange, and the inner flange It is fastened and fixed in the square groove of the ring groove. 5. The waterproof electrical connector according to claim 3, characterized in that: the outer side of the waterproof ring has an arc-shaped outer flange. 6. The waterproof electrical connector according to claim 1, characterized in that: the front port of the seamless metal shell is formed with a convex ring protruding outward; The protruding ring of the seamless metal shell is in contact, so that a groove is formed between the front end of the shell and the protruding ring. 7. The waterproof electrical connector according to claim 1, characterized in that: the shell and the seamless metal shell are also fixed by welding. 8. The waterproof electrical connector according to claim 1, wherein a lug is formed on the outer side of the plastic sleeve, and the lug has a through hole. 9. The waterproof electrical connector according to any one of claims 1-8, characterized in that: the insulator includes an insulating lower seat, an insulating upper seat fixedly installed on the insulating lower seat, and an insulating upper seat fixed on the insulating lower seat and the insulating The metal partition between the upper seat and the end block installed on the front end of the insulating lower seat, the insulating upper seat and the metal partition; the plurality of terminals include a plurality of first terminals and a plurality of second terminals, wherein the first terminal is integrally fixed on the In the insulating lower seat, the second terminal is integrally fixed in the insulating upper seat. 10. The waterproof electrical connector according to claim 9, characterized in that: upper and lower grounding plates that are fastened and fixed to each other are installed on the periphery of the insulating upper seat and the insulating lower seat, and the upper and lower grounding plates or the lower grounding plate are connected to Metal separator contacts.