CN212934935U

CN212934935U - Electrical connector

Info

Publication number: CN212934935U
Application number: CN202020856704.XU
Authority: CN
Inventors: 王帅; 仇金国; 秦海伟
Original assignee: Qidong Qianshuo Electronic Co Ltd
Current assignee: Qidong Qianshuo Electronic Co Ltd
Priority date: 2020-05-20
Filing date: 2020-05-20
Publication date: 2021-04-09
Anticipated expiration: 2030-05-20

Abstract

The utility model discloses an electric connector, locate the metal casing in the terminal module outside and fix waterproof circle on metal casing including terminal module, cover. The metal shell comprises a main shell body and an auxiliary shell body which are respectively formed by drawing a cylindrical metal piece, the main shell body covers the outer side of the terminal module, the auxiliary shell body comprises an annular main body part and a blocking part which are fixedly connected to the outer edge of the front end of the main shell body, and compared with the traditional metal injection molding process, the manufacturing cost of the main shell body and the manufacturing cost of the auxiliary shell body are lower due to the fact that the drawing molding process is adopted by the main shell body and the auxiliary shell. The waterproof ring is integrally formed on the outer side of the main shell, and the waterproof ring is abutted against the front end face of the stop part, so that the waterproof ring can be in mutual contact with the inner side face and the inner surface of the mobile phone shell, the waterproof grade is improved, and the manufacturing cost of the metal shell is further reduced. Meanwhile, the main shell and the auxiliary shell which are formed by drawing are matched with each other, so that various forming processes of the waterproof ring can be compatible at the same time, and the universality is wider.

Description

Electrical connector

Technical Field

The present invention relates to an electrical connector, and more particularly to an electrical connector with a metal shell having a draw-out structure.

Background

With the rapid development of the technology level, electronic devices such as mobile phones and tablet computers have become common life and work tools for people; meanwhile, a Type C USB (Universal Serial Bus) connector in an electronic device has also been widely used. At present, there are a lot of waterproof application demands to Type C Type USB connector in the market, under waterproof application sight, the USB connector adopts silica gel and casing to carry out extrusion fit in order to form waterproof construction in its socket department to reach waterproof nature requirement. The existing waterproof structure is mainly divided into the following three conditions: first, the LIM (Injection molding Rubber) process mainly performs Injection molding of silica gel on a housing, but the process is greatly affected by the dimensional tolerance of the housing and is prone to generate burrs; secondly, a silica gel ring sleeving process needs to be carried out, wherein the shell is provided with a front limiting groove structure and a rear limiting groove structure, the front limiting groove structure and the rear limiting groove structure are generally Metal Injection Molding (MIM) structures or two flanging iron shell matching structures, and the cost is relatively high; and thirdly, a dispensing process, wherein the structure of the process is also an MIM structure, and the cost is relatively high. Therefore, the existing waterproof structure has the technical problems of high manufacturing cost, easy generation of burrs and the like.

It is therefore desirable to provide a new electrical connector that overcomes the above-mentioned drawbacks.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide an electric connector with metal casing, this metal casing has and makes simple, the cost is lower and the commonality is wider advantage.

In order to achieve the above purpose, the utility model adopts the following technical scheme: an electric connector comprises a terminal module, a metal shell sleeved outside the terminal module and a waterproof ring fixed on the metal shell. The metal shell comprises a main shell and an auxiliary shell which are respectively formed by drawing a cylindrical metal piece, the main shell covers the outer side of the terminal module, the auxiliary shell comprises an annular main body part fixedly connected to the outer edge of the front end of the main shell and a blocking part extending outwards from the edge of the main body part, and the waterproof ring is integrally formed on the front end face of the blocking part of the auxiliary shell.

In a preferred embodiment, the stopper portion is bent and extended outward from an outer edge of a front end of the main body portion, and the waterproof ring abuts against both an outer side of the main housing and a front end surface of the stopper portion.

In a preferred embodiment, a joint between the stopper and the body is formed as an arc-shaped region in which the waterproof ring is accommodated.

In a preferred embodiment, the main housing is of a straight cylindrical structure, and the auxiliary housing is of a flanged cylindrical structure; the auxiliary shell is fixed on the outer side of the front end of the main shell, and the main body portion is welded to the outer edge of the front end of the main shell in a spot welding mode.

In a preferred embodiment, the waterproof ring is made of a plastic material and is formed by hot melting on the outer edge of the front end of the main housing and the front end surface of the stop portion.

In a preferred embodiment, the electrical connector comprises a fixing bracket fixed outside the main housing, and the fixing bracket is spot-welded below the rear end of the main housing and behind the secondary housing.

In a preferred embodiment, the fixing bracket is used for being fixed on a circuit board and includes a fixing portion welded to the main housing and an ear portion extending from the fixing portion in a transverse direction, the ear portion is provided with a fixing hole, and the fixing hole fixes the electrical connector on the circuit board through a screw.

In a preferred embodiment, the terminal module includes a base and a docking tongue extending forward from the base, the base is received in the main housing of the metal shell, and the docking tongue projects forward from the base out of the main housing; the terminal module further comprises waterproof glue which is located at the rear end of the base and located in the coverage range of the main shell of the metal shell.

In a preferred embodiment, the terminal module further includes an extension portion extending rearward from the base portion, and the electrical connector includes a rear housing covering the extension portion.

In a preferred embodiment, the terminal module includes a metal middle plate, first and second terminal sets located on upper and lower sides of the metal middle plate, and an insulating base for integrally holding the metal middle plate and the first and second terminal sets.

In a preferred embodiment, the electrical connector is mounted on an electronic product having a socket, a front end surface of the waterproof ring is in contact with an inner side surface of the socket of the electronic product, and an upper end surface of the waterproof ring is in contact with an inner surface of the electronic product.

Compared with the prior art, the utility model discloses following beneficial effect has: the metal shell comprises a main shell body and an auxiliary shell body which are respectively formed by drawing a cylindrical metal piece, the main shell body covers the outer side of the terminal module, the auxiliary shell body comprises an annular main body part and a blocking part which are fixedly connected to the outer edge of the front end of the main shell body, and compared with the traditional metal injection molding process, the manufacturing cost of the main shell body and the manufacturing cost of the auxiliary shell body are lower due to the fact that the drawing molding process is adopted by the main shell body and the auxiliary shell. The waterproof ring is integrally formed on the outer side of the main shell, and the waterproof ring is abutted against the front end face of the stop part, so that the waterproof ring can be in mutual contact with the inner side face and the inner surface of the mobile phone shell, the waterproof grade is improved, and the manufacturing cost of the metal shell is further reduced. Meanwhile, the main shell and the auxiliary shell which are formed by drawing are matched with each other, so that various forming processes of the waterproof ring can be compatible at the same time, and the universality is wider.

Drawings

Fig. 1 is a front view of the electrical connector of the present invention.

Fig. 2 is an exploded view of the electrical connector shown in fig. 1.

Fig. 3 is a cross-sectional view of the electrical connector shown in fig. 1 taken along the direction a-a.

Fig. 4 is a perspective view of a waterproof structure in the electrical connector shown in fig. 1.

Fig. 5 is an exploded schematic view of the waterproof structure shown in fig. 4.

Detailed Description

Referring to fig. 1 to 3, the present invention discloses an electrical connector 100 for being mounted on a circuit board (not shown) and an electronic product (not shown) having a socket. In this embodiment, the electrical connector 100 is a sinking plate Type C USB connector and includes a terminal module 10, a metal shell 20 sleeved outside the terminal module 10, a fixing bracket 30 fixed outside the metal shell 20, and a waterproof ring 40 fixed on the metal shell 20, wherein the waterproof ring 40 is integrally formed on the periphery of the metal shell 20.

Referring to fig. 2, the terminal module 10 has a base 11, a mating tongue 12 extending forward from the base 11, and an extending portion 13 extending backward from the base 11, wherein the mating tongue 12 is used for mating with a mating cavity of a mating connector (not shown). The base 11 is received in the metal shell 20, and the docking tongue 12 projects forward of the metal shell 20 from the base 11. The extension portion 13 is disposed above the circuit board, and the electrical connector 100 includes a rear housing 50 covering the extension portion 13, wherein the rear housing 50 is connected to the circuit board to electromagnetically shield the extension portion 13. The terminal module 10 further includes a waterproof adhesive 14 located at the rear end of the base 11 and within the coverage of the metal shell 20, and the waterproof adhesive 14 ensures the waterproof performance of the rear end of the electrical connector 100.

Referring to fig. 3, the terminal module 100 includes a metal middle plate, first and second terminal sets located at upper and lower sides of the metal middle plate, and an insulating base for integrally fixing the metal middle plate and the first and second terminal sets. The first terminal set comprises a plurality of first conductive terminals and a first insulator for integrally fixing the first conductive terminals, and the second terminal set comprises a plurality of second conductive terminals and a second insulator for integrally fixing the second conductive terminals.

Referring to fig. 4 and 5, the metal housing 20 includes a main housing 21 and an auxiliary housing 22 respectively formed by drawing cylindrical metal pieces, wherein the main housing 21 is a straight cylindrical structure, and the auxiliary housing 22 is a flanged cylindrical structure. Compared with the conventional metal injection molding process, the main housing 21 and the sub-housing 22 are manufactured at lower cost by using a drawing process. The main housing 21 covers the outer side of the terminal module 10, and the sub-housing 22 includes an annular main body 221 fixed to the outer edge of the front end of the main housing 21 and a stop portion 222 extending outward from the front end edge of the main body 221.

In the present embodiment, the sub-housing 22 is fixed to the outer side of the front end of the main housing 21, and the main body 221 is spot-welded to the outer edge of the front end of the main housing 21. The base 11 of the terminal module 10 is received in the main housing 21 of the metal shell 20, and the mating tongue 12 projects forward from the main housing 21. The waterproof glue 14 of the terminal module 10 is located in the coverage of the main housing 21 of the metal shell 20.

Referring to fig. 2, the fixing bracket 30 is spot welded below the rear end of the main housing 21 of the metal shell 20 and behind the sub-housing 22. The fixing bracket 30 is used for being fixed on a circuit board and comprises a fixing portion 31 welded to the main housing 21 and an ear portion 32 extending transversely from the fixing portion 31, the ear portion 32 is provided with a fixing hole 33, and the fixing hole 33 is fixed on the circuit board by the electric connector 100 through a screw.

As shown in fig. 4 and 5, the waterproof ring 40 is integrally formed on the front end surface of the stopper 222 of the sub-housing 22. In the present embodiment, the stop portion 22 is bent and extended outward from the outer edge of the front end of the main body portion 21, and the waterproof ring 40 is integrally formed on the outer edge of the front end of the main housing 21 and located in front of the sub-housing 22, that is, the waterproof ring 40 abuts against the outer side of the main housing 21 and the front end surface of the stop portion 222. Meanwhile, an arc-shaped region is formed at a connection portion of the stopper portion 222 and the body portion 221, and the waterproof ring 40 is accommodated in the arc-shaped region, so that a gap between the main housing 21 and the sub-housing 22 is sealed, and the waterproof performance of the metal shell 20 is improved.

When the electrical connector 100 is mounted on the electronic product, the front end surface of the waterproof ring 40 is in contact with the inner side surface of the socket of the electronic product, and the upper end surface of the waterproof ring 40 is in contact with the inner surface of the socket of the electronic product, that is, the waterproof ring 40 can be in contact with the inner side surface and the inner surface of the housing of the electronic product at the same time, so that the waterproof grade is improved, and the manufacturing cost of the metal housing 20 is further reduced.

Meanwhile, the main shell 21 and the auxiliary shell 22 which are formed by drawing are matched with each other, so that various forming processes of the waterproof ring 40 can be compatible, and the universality is wide. In this embodiment, the waterproof ring 40 is made of plastic material and is formed by hot melting on the outer edge of the front end of the main housing 21 and the front end surface of the stop portion 222; in other embodiments, the waterproof ring 40 may be a silicone ring and assembled and molded on the outer edge of the front end of the main housing 21 and the front end surface of the stopper 222.

The utility model discloses in, metal casing 20 is including drawing fashioned main casing body 21 and sub-casing 22 by the tube-shape metalwork respectively, sub-casing 22 is compared in traditional metal injection moulding technology including connecting the cyclic annular main part 221 that is fixed in main casing body 21 front end outer fringe and the stop 222 that outwards extends from the edge of main part 221, main casing body 21 and sub-casing 22 adopt the manufacturing cost who draws the shaping technology lower. The waterproof ring 40 is integrally formed on the outer side of the main housing 21, and the waterproof ring 40 abuts against the front end surface of the stop portion 222, so that the waterproof ring 40 can be in contact with the inner side surface and the inner surface of the casing of the mobile phone (electronic product), the waterproof grade is improved, and the manufacturing cost of the metal casing 20 is further reduced. Meanwhile, the main shell 21 and the auxiliary shell 22 which are formed by drawing are matched with each other, so that various forming processes of the waterproof ring 40 can be compatible, and the universality is wide.

In summary, the above is only a preferred embodiment of the present invention, and the scope of the present invention should not be limited thereby, and all the simple equivalent changes and modifications made according to the claims and the content of the specification should still belong to the scope covered by the present invention.

Claims

1. An electric connector comprises a terminal module, a metal shell sleeved outside the terminal module and a waterproof ring fixedly held on the metal shell; the method is characterized in that: the metal shell comprises a main shell and an auxiliary shell which are respectively formed by drawing a cylindrical metal piece, the main shell covers the outer side of the terminal module, the auxiliary shell comprises an annular main body part fixedly connected to the outer edge of the front end of the main shell and a blocking part extending outwards from the edge of the main body part, and the waterproof ring is integrally formed on the front end face of the blocking part of the auxiliary shell.

2. The electrical connector of claim 1, wherein: the stop part is bent outwards from the outer edge of the front end of the main body part, and the waterproof ring is simultaneously abutted against the outer side of the main shell and the front end face of the stop part.

3. The electrical connector of claim 2, wherein: the joint of the stop part and the main body part forms an arc-shaped area, and the waterproof ring is accommodated in the arc-shaped area.

4. The electrical connector of claim 2, wherein: the main shell is of a straight cylinder type cylindrical structure, and the auxiliary shell is of a flanging type cylindrical structure; the auxiliary shell is fixed on the outer side of the front end of the main shell, and the main body portion is welded to the outer edge of the front end of the main shell in a spot welding mode.

5. The electrical connector of claim 4, wherein: the waterproof ring is made of plastic materials and is formed on the outer edge of the front end of the main shell and the front end face of the blocking portion in a hot melting mode.

6. The electrical connector of claim 1, wherein: the electric connector comprises a fixing support fixed on the outer side of the main shell, and the fixing support is welded below the rear end of the main shell in a spot mode and is located behind the auxiliary shell.

7. The electrical connector of claim 6, wherein: the fixing support is used for being fixed in on a circuit board and including welding in the fixed part of main casing body and certainly the ear of fixed part along transversely extending, the ear is equipped with the fixed orifices, just the fixed orifices passes through the screw will the electric connector is fixed in on the circuit board.

8. The electrical connector of claim 1, wherein: the terminal module comprises a base and a butt-joint tongue part extending forwards from the base, wherein the base is accommodated in the main shell of the metal shell, and the butt-joint tongue part protrudes forwards from the base and protrudes out of the main shell; the terminal module further comprises waterproof glue which is located at the rear end of the base and located in the coverage range of the main shell of the metal shell.

9. The electrical connector of claim 8, wherein: the terminal module further comprises an extension part extending backwards from the base part, and the electric connector comprises a rear shell covering the extension part.

10. The electrical connector of claim 1, wherein: the terminal module comprises a metal middle plate, a first terminal group, a second terminal group and an insulating base body, wherein the first terminal group and the second terminal group are positioned on the upper side and the lower side of the metal middle plate, and the insulating base body is used for fixing the metal middle plate, the first terminal group and the second terminal group into a whole.

11. The electrical connector of claim 1, wherein: the electric connector is arranged on an electronic product with a plug port, the front end face of the waterproof ring is in mutual contact with the inner side face of the plug port of the electronic product, and the upper end face of the waterproof ring is in mutual contact with the inner surface of the electronic product.