TWM541133U - Electrical connector - Google Patents

Description

Electrical connector

The present invention relates to an electrical connector, and more particularly to a waterproof electrical connector.

The Chinese patent CN201220388481.4 discloses a socket connector, comprising an insulating body, a conductive terminal held in the insulating body, a metal casing covered on the outside of the insulating body, and a holding member for holding the insulating body and the metal casing; the insulation The body includes a body portion and a tongue extending forward from the body portion; the conductive terminal includes a connecting portion, a contact portion connected to one end of the connecting portion, and a soldering portion connected to the other end of the connecting portion; the soldering portion is located behind the insulating body a side; the insulating body and the holding member are sealed by a waterproof glue in a surface sealing manner. The waterproof glue in the socket connector is directly applied to the rear portion of the conductive terminal, and there is no barrier structure between the portion coated with the waterproof glue and the welded portion, so the waterproof rubber is easy to flow backward to contaminate the welded portion of the conductive terminal, causing welding bad. On the other hand, the holder of the socket connector does not have any waterproof sealing structure at the front end, so that water droplets from the outside may infiltrate into the joint gap between the outer casing of the electronic device (such as a mobile phone) to which the socket connector is applied and the holding member. Inside the electronic equipment, waterproof sealing needs to be improved.

The technical problem to be solved by the present invention is to overcome the deficiencies of the prior art mentioned above, and to provide an electrical connector which has a better waterproof sealing effect and can prevent the waterproof adhesive applied to the rear of the electrical connector from contaminating the conductive terminal. Welding department.

The present invention proposes an electrical connector for the above technical problems, including:

A terminal block includes an insulating base and a plurality of conductive terminals disposed on the insulating base, the conductive terminal including a pair of joints at the front end, a soldering portion at the rear end, and the connecting portion and the a fixing portion between the welding portions, the insulating base is provided with a filling channel, the fixing portion of the conductive terminals has a bare portion, and the exposed portion is exposed in the filling channel;

a metal shielding shell having a receiving cavity extending through the front and the rear, the receiving cavity for inserting the terminal block therein;

An insulative housing having a receiving cavity extending through the front and the rear, the receiving cavity for inserting and fixing the metal shielding shell, the rear end of the receiving cavity being opposite to the filling channel;

a waterproof sealing ring formed with an elastic rubber compound on the outer periphery of the front end of the insulating casing;

A waterproof glue is filled in the glue filling channel and correspondingly seals the rear end of the receiving cavity.

In some embodiments, the rear end of the insulating base protrudes rearward from the insulating housing, and the glue filling channel is disposed at a rear portion of the insulating base, and is in front of and behind the potting channel. A partition is formed on both sides.

In some embodiments, the conductive terminal is fixed to the insulating base by insert molding, wherein a fixed portion of the conductive terminal adjacent to the bare portion is integrated with the partition.

In some implementations, the terminal block is formed by a combination of a plurality of modules for sealing a bonding gap on the terminal block.

In some embodiments, the front outer peripheral ring of the insulative housing is provided with a groove, and the waterproof sealing ring is formed at the groove and protrudes forwardly from the insulating case.

In some embodiments, the waterproof sealing ring is directly overmolded with a silicone material on the recess of the insulating housing.

In some embodiments, the electrical connector further includes two grounding metal members respectively coupled to the two sides of the insulating housing, the grounding metal member including a body and a soldering leg extending from the body, the body The front end is embedded in the insulating housing.

In some implementations, the metal shield case includes a body that is annular and two grounding legs that are bent back and forth from opposite sides of the body, and the rear ends of the bodies of the two grounded metal members are respectively attached to the The outside of the two grounding legs are welded together.

In some embodiments, the soldering leg of the grounding metal member is further provided with two upper and lower opposing buckles for fixing the grounding metal member to the insulating base.

In some embodiments, the insulating base includes a fixing seat, a tongue extending forward from the fixing seat, and a protruding portion extending backward from the fixing seat, wherein the fixing seat has a shape just right Cooperating with the metal shield shell, the potting channel is disposed at the protrusion.

Compared with the prior art, the electrical connector of the present invention can prevent the water droplets from infiltrating into the interior of the electronic device through the elastic sealing ring of the electronic device and the outer casing of the electronic device; and through the insulating base and the conductive terminal on the terminal block The corresponding section of the fixed part is provided with a glue filling channel, and then filled with the waterproof glue in the glue filling channel, thereby closing the joint gap on the terminal block and sealing the rear end of the receiving cavity of the insulating shell, thereby preventing the outside. The purpose of the water droplets penetrating backward from the front portion of the receiving cavity has a better waterproof effect; and the partitioning portion limits the flow of the waterproof glue, and the waterproof rubber can be prevented from contaminating the welded portion of the conductive terminal.

Although the present invention can be readily embodied in various forms, the specific embodiments shown in the drawings and described in detail in the specification are only The exemplary description of the novel principles is not intended to limit the invention to what is described herein.

Thus, a feature indicated in this specification is intended to illustrate one of the features of one embodiment of the present invention, and is not intended to suggest that each embodiment of the present invention must have the features described. Moreover, it should be noted that this specification describes a number of features. Although certain features may be combined together to illustrate possible system designs, these features are also applicable to other combinations not explicitly illustrated. Accordingly, the illustrated combinations are not intended to be limiting, unless otherwise indicated.

In the embodiments shown in the figures, the indication of directions (such as up, down, left, right, front and back) is used to explain that the structure and motion of the various elements of the present invention are not absolute but relative. These descriptions are suitable when the elements are in the positions shown in the figures. If the description of the position of these elements changes, the indications of these directions also change accordingly.

The preferred embodiments of the present invention are further elaborated below in conjunction with the drawings of the specification.

Referring to FIG. 1, FIG. 2 and FIG. 3, the present invention proposes a waterproof USB type-C electrical connector 10 which is mounted on the circuit board 20 in a sinker mounting manner.

Referring to FIG. 4 to FIG. 10, the electrical connector 10 includes: an insulating base 1, a plurality of conductive terminals 2, a metal shield shell 3, two grounding metal members 4, an insulating shell 5, a waterproof sealing ring 6 and An intermediate grounding lug 9. The conductive terminals 2 and the intermediate grounding piece 9 are fixed to the insulating base 1. The combination of the insulating base 1 and the conductive terminals 2 and the intermediate grounding plate 9 is regarded as a terminal block 8. The terminal block 8 is inserted and fixed in the metal shield case 3. The metal shield case 3 is inserted in the insulative housing 5. The two grounding metal members 4 are partially embedded in the insulating housing 5. The waterproof seal ring 6 is provided at the front end of the insulating case 5. A waterproof rubber 7 is applied to the rear of the terminal block 8.

Referring to FIG. 6 to FIG. 9 , the insulating base 1 includes a fixing base 11 , a tongue 12 extending forwardly from the fixing seat 11 , and a protruding portion 13 extending backward from the fixing seat 11 . A card block 14 is disposed on each of the left and right sides of the upper surface of the extending portion 13 for fixing the two grounding metal members 4. Referring to FIG. 7, FIG. 9, and FIG. 10, the protruding portion 13 on the rear side of the insulating base 1 is provided with a potting channel 17 penetrating therethrough for filling the waterproof glue 7. The insulating base 1 is provided with partitions 18 and 19 on the front and rear sides of the potting channel 17, respectively.

Referring to FIG. 10, the conductive terminal 2 includes a pair of joint portions 21 at the front end, a welded portion 23 at the rear end, and a fixing portion 22 connected between the butted portion 21 and the welded portion 23. The conductive terminals 2 are divided into upper and lower rows, and the abutting portions 21 are respectively exposed and arranged on the upper and lower sides of the tongue plate 12 of the insulating base 1. The fixing portion 22 of the conductive terminal 2 passes through the glue filling channel 17 forward and backward. Referring to FIG. 9 , the fixing portions 22 of the upper and lower two sets of conductive terminals 2 have a bare section 222 exposed to the potting channel 17 . Referring to FIG. 4 again, the fixing portions 22 are respectively located at the fixing portions 224 and 226 before and after the bare portion 222, and the partition portion 18 of the insulating base 1 before and after the filling channel 17 respectively. 19 combined into one. This structure can effectively block the waterproof rubber 7 from climbing in the front-rear direction of the bare section 222.

Referring to FIG. 4 to FIG. 10, the metal shielding shell 3 includes an annular body 31 and two grounding legs 32 extending from the two sides of the body 31. The body 31 has a receiving cavity 38 extending through the front and rear for the terminal block 8 to be inserted therein. That is, the body 31 is circumferentially surrounded by the outer periphery of the terminal block 8, and is adapted to match the outer shape of the fixing base 11 of the insulating base 1.

Referring to FIGS. 5-10, the grounding metal member 4 includes a main body 41, a soldering leg 42 bent from the main body 41, and two fastening tabs 43, 44 located at the rear end of the main body 41. The main body 41 is a flat plate whose front end is inlaid on the insulating housing 5 by insert molding and does not come into contact with the body 31 of the metal shield case 3. The rear end of the main body 41 protrudes rearward from the insulating case 5 and is attached to the outside of the grounding leg 32 of the metal shield case 3. The rear end of the body 41 is welded to the grounding leg 32 of the metal shield case 3. Referring back to FIG. 1 and FIG. 2, on the one hand, the grounding metal member 4 and the metal shielding shell 3 can be grounded to the grounding pad on the circuit board 20 by the grounding pin 32, and on the other hand, The bonding force between the electrical connector 10 and the circuit board 20 is increased.

Further, the two cleats 43, 44 are respectively engaged with the upper and lower surfaces of the rear side of the insulating base 1. Moreover, the buckle piece 43 located above is provided with a button hole 431 which can be coupled with the block 14 on the insulating base 1. With this configuration, the two grounding metal members 4 and the two grounding legs 32 on the metal shield case 3 can be securely fixed to the protruding portion 13 of the insulating base 1.

Referring to FIGS. 5 to 10, the insulating case 5 is injection molded on the outer circumference of the two grounded metal members 4. That is to say, the two grounding metal members 4 and the insulating casing 5 are integrally combined by insert molding. The front end of the insulative housing 5 is circumferentially formed with a ring groove 56. The insulating housing 5 is formed with a receiving cavity 59 that penetrates forward and backward. The combination of the terminal block 8 and the metal shield case 3 is inserted into the receiving cavity 59 from the front to the front. When the assembly is inserted into position, the glue channel 17 of the insulating base 1 and the receiving body are received. The rear end of the cavity 59 is opposed in a horizontal position, and the rear end of the protruding portion 13 protrudes rearward from the insulating case 5. The front portion of the receiving cavity 59 can be opposite to a pair of plug connectors (not shown).

Referring to FIGS. 4 to 10, the waterproof seal ring 6 is disposed at the recess 56 of the insulative housing 5. The waterproof seal ring 6 projects forwardly from the insulative housing 5. The waterproof seal ring 6 can be engaged with an outer casing of an electronic device such as a mobile phone to prevent external water droplets from penetrating into the interior of the electronic device. In the present embodiment, the waterproof sealing ring 6 is directly overmolded on the groove 56 of the insulating casing 5 made of a nylon material by using a relatively elastic silicone rubber. In other embodiments, the waterproof sealing ring 6 can also be injection molded on the insulating casing 5 by using other materials that are more elastic than the insulating material of the insulating casing 5. This can enhance the elastic deformation ability of the waterproof sealing ring 6 when combined with the outer casing of the electronic device, thereby achieving a better waterproof sealing effect; the waterproof sealing ring 6 obtained by overmolding on the insulating outer casing 5 and The insulative housing 5 is tightly bonded without gaps and is not easily detached, so that its waterproof performance is better than that of a sealing ring which is usually assembled.

Referring to FIGS. 4 to 10, the waterproof rubber 7 is filled in the potting channel 17 of the insulating base 1. In the embodiment, the waterproof adhesive 7 is made of epoxy resin. In other embodiments, the waterproof adhesive 7 can be made of other materials with waterproof function.

In this embodiment, the terminal block 8 may be a combination of a plurality of modules. For example, the insulating base 1 is divided into two parts, and a part of the conductive base 2 is formed by insert molding. A module, wherein the other part and the lower row of the conductive terminals 2 are formed by insert molding to form another module, and the intermediate grounding piece 9 is sandwiched between the two modules. In this way, due to the difference in material between the conductive terminal 2, the intermediate grounding piece 9 and the insulating plastic of the insulating base 1, a slight bonding gap is easily generated under the action of thermal expansion and contraction, and these combined gaps are collectively referred to as terminal blocks. The bonding gap on the 8 includes, but is not limited to, a gap between the respective modules, and a gap between the metal member (for example, the conductive terminal) and the insulating member on the same module.

By filling the waterproof glue 7 into the glue filling channel 17, the rear end surface of the front partition portion 18 is completely closed, so that the joint gap on the terminal block 8 can be closed, and the rear end of the receiving cavity 59 of the insulating case 5 can be sealed. Thereby, it is possible to prevent external water droplets from penetrating backward from the front portion of the housing chamber 59. It is worth mentioning that the waterproof rubber 7 in this embodiment preferably does not completely fill the glue filling channel 17 and is spaced apart from the rear partition portion 19, thereby saving glue and preventing the glue from flowing.

It is worth mentioning that the terminal block 8 is provided with the potting channel 17 and the partition portion 222 of the conductive terminal 2 exposed to the potting channel 17 is blocked by providing a partition 19 behind the potting channel 17. With the welded portion 23, it is possible to effectively prevent the excessive waterproof rubber 7 from contaminating the welded portion 23.

The manufacturing and assembly process of the electrical connector 10 generally includes the following steps: bonding the insulating base 1, the conductive terminal 2 and the intermediate grounding piece 9 to obtain the terminal block 8; firstly passing the clip on the two grounding metal members 4 The insulating case 5 is obtained by molding the insulating case 5, and the waterproof sealing ring 6 is formed on the insulating case 5 by using a silicone material; the terminal block 8 is inserted into the receiving cavity 59 from the back to the front; finally, in the receiving cavity 59. The rear end is filled with the waterproof rubber 7, thereby sealing the rear portion of the receiving cavity 59 and the rear end surface of the partitioning portion 18 of the potting channel 17.

Compared with the prior art, the electrical connector 10 of the present invention is elastically fitted to the outer casing of the electronic device through the waterproof sealing ring 6 to prevent the external water droplets from infiltrating into the electronic device through the matching gap between the two; A potting channel 17 is disposed on the insulating base 1 of the seat 8, and is filled in the potting channel 17 with the waterproof glue 7, thereby closing the joint gap on the terminal block 8, and sealing the rear end of the receiving cavity 59 of the insulating case 5. The purpose of preventing the external water droplets from penetrating backward from the front portion of the receiving cavity 59 has a better waterproof effect; and the partitioning portion 19 restricts the flow of the waterproof rubber 7, and the waterproof rubber 7 can be prevented from contaminating the welded portion of the conductive terminal 2. twenty three.

The above is only a preferred embodiment of the present invention, and is not intended to limit the embodiments of the present invention. Those skilled in the art can make corresponding modifications or modifications in a very convenient manner according to the main idea and spirit of the present invention. The scope of protection shall be subject to the scope of protection required by the scope of application for patents.

10‧‧‧Electrical connector
20‧‧‧ boards
1‧‧‧Insulated base
2‧‧‧Electrical terminals
3‧‧‧Metal shield shell
4‧‧‧Grounded metal parts
5‧‧‧Insulated housing
6‧‧‧Waterproof sealing ring
7‧‧‧Waterproof glue
8‧‧‧ terminal block
9‧‧‧Intermediate grounding piece
11‧‧‧ Fixed seat
12‧‧ ‧ tongue
13‧‧‧Outreach
14‧‧‧ card block
17‧‧‧Glue channel
18, 19‧‧‧ partition
21‧‧‧Docking Department
22‧‧‧ Fixed Department
222‧‧‧Exposed section
224, 226‧ ‧ fixed section
23‧‧‧Weld Department
31‧‧‧Ontology
32‧‧‧ Grounding feet
38‧‧‧容容
41‧‧‧ Subject
42‧‧‧welding feet
43‧‧‧Bucks
44‧‧‧Bucks
431‧‧‧ buttonhole
56‧‧‧ Groove
59‧‧‧ containment chamber

Other features and advantages of the present invention will be apparent from the following description of the drawings, wherein: Figure 1 is a perspective view of a preferred embodiment of the present invention. Figure 2 is a plan view of Figure 1. Figure 3 is a front elevational view of Figure 1. Figure 4 is a cross-sectional view taken along line A-A of Figure 3, in which the circuit board is omitted. Figure 5 is a perspective view of a preferred embodiment of the novel electrical connector. Figure 6 is an exploded perspective view of a preferred embodiment of the electrical connector of the present invention. Fig. 7 is a further exploded perspective view of Fig. 6; Fig. 8 is a further exploded perspective view of Fig. 7; Figure 9 is a further exploded perspective view of Figure 8. Fig. 10 is a further exploded perspective view of Fig. 9;

10‧‧‧Electrical connector

1‧‧‧Insulated base

5‧‧‧Insulated housing

6‧‧‧Waterproof sealing ring

7‧‧‧Waterproof glue

17‧‧‧Glue channel

18, 19‧‧‧ partition

21‧‧‧Docking Department

22‧‧‧ Fixed Department

222‧‧‧Exposed section

224, 226‧ ‧ fixed section

23‧‧‧Weld Department

31‧‧‧Ontology

32‧‧‧ Grounding feet

59‧‧‧ containment chamber

Claims (10)

An electrical connector includes: a terminal block including an insulating base and a plurality of conductive terminals disposed on the insulating base, the conductive terminal including a pair of joints at the front end, a soldering portion at the rear end, and a fixing portion is connected between the abutting portion and the welding portion, the insulating base is provided with a filling channel, the fixing portion of the conductive terminal has a bare portion, and the exposed portion is exposed in the filling channel; a metal shielding shell having a receiving cavity for front and rear through, the receiving cavity for inserting the terminal block therein; an insulating housing having a receiving cavity extending through the front and the rear, the receiving cavity being used for The metal shielding shell is inserted and fixed, the rear end of the receiving cavity is opposite to the glue filling channel; a waterproof sealing ring is formed on the outer periphery of the front end of the insulating shell by using elastic rubber; and a waterproof glue is filled in The glue filling channel is correspondingly sealed to the rear end of the receiving cavity. The electrical connector of claim 1, wherein a rear end of the insulating base protrudes rearward from the insulating housing, and the glue filling channel is disposed at an upper portion of the insulating base at a rear portion of the insulating base, and in the filling tank A partition is formed on both the front and rear sides of the track. The electrical connector of claim 2, wherein the conductive terminal is fixed to the insulating base by insert molding, wherein a fixed section of the conductive terminal adjacent to the bare section is integrated with the partition . The electrical connector of claim 3, wherein the terminal block is formed by a combination of a plurality of modules for sealing a bonding gap on the terminal block. The electrical connector of claim 1, wherein the outer peripheral ring of the front end of the insulating housing is provided with a groove, and the waterproof sealing ring is formed at the groove and protrudes forwardly from the insulating case. The electrical connector of claim 5, wherein the waterproof sealing ring is directly overmolded with the silicone material on the recess of the insulating housing. The electrical connector of any one of claims 1 to 6, wherein the electrical connector further comprises two grounding metal members respectively coupled to the two sides of the insulating housing, the grounding metal member comprising a body and the body A welded leg extending from the bend, the front end of the body being embedded in the insulative housing. The electrical connector of claim 7, wherein the metal shield shell comprises a body having an annular shape and two grounding legs extending outwardly from opposite sides of the body, the rear ends of the bodies of the two grounded metal members They are respectively attached to the outer sides of the two grounding legs and welded together. The electrical connector of claim 8, wherein the soldering leg of the grounding metal member is further provided with two upper and lower opposing buckles for fixing the grounding metal member to the insulating base. The electrical connector of any one of claims 1 to 6, wherein the insulating base comprises a fixing seat, a tongue extending forward from the fixing seat, and a protrusion extending backward from the fixing seat a protrusion, wherein the shape of the fixing seat is just matched with the metal shielding shell, and the filling channel is disposed at the protruding portion.