TWM532104U - Waterproof connector - Google Patents

Description

Waterproof connector

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

The Chinese patent CN201520176289.2 discloses an electrical connector, comprising: a composite module comprising a lower row of terminal modules and an upper row of terminal modules mounted on the lower row of terminal modules, the composite module a first receiving channel is disposed around the outer peripheral surface of the insulating body, and the insulating body is provided with three second receiving channels at a position corresponding to a joint between the first insulating member and the second insulating member; a housing sleeved on the outer circumference of the composite module; two inner shielding sheets attached to the composite module and located inside the outer shielding shell; a sealing ring corresponding to the first sleeve a receiving channel, and sandwiched between an outer peripheral surface of the insulating body and an inner surface of a rear end edge of the outer shield case; and three sealing members poured into the three second receiving channels The colloid inside is formed by condensation. The socket connector is composed of two terminal modules, and it is easy to form a joint gap between the two terminal modules, and the glue is required to seal the joint gap, the process is cumbersome; and the end of the upper row terminal is not buried. In the tongue plate, there is a risk that the butt joint will warp upwards, and these factors will affect the waterproof effect and reliability of the electrical connector. It can be seen that it is necessary to improve it.

The technical problem to be solved by the present invention is to overcome the deficiencies of the prior art described above, and to provide a waterproof connector which has better waterproof performance and high reliability.

The present invention provides a waterproof connector for the above technical problems, which includes:

a first combination body comprising: a first plastic member having a first base and a first tongue portion extending forwardly from the first base, the first tongue portion being provided with at least a first through-opening coupling hole; a first terminal set embedded in the first plastic member, each terminal including a soldering leg extending from the first base and exposedly embedded in the first tongue a pair of joints on the portion; and an intermediate shielding sheet embedded in the first plastic member;

a second combined body comprising: a second plastic member reshaped on the first combined body, having a second base and a second tongue extending forward from the second base The second base is combined with the first base and formed with an annular receiving groove, the second tongue portion is combined with the first tongue portion, and correspondingly formed The bonding hole is combined with at least one bonding post; a second terminal group is embedded in the second plastic member, each terminal includes a soldering leg protruding from the second base and is embedded in the exposed a pair of joints on the second tongue portion;

a sealing ring that is sleeved on the receiving channel;

A shielding shell is disposed on the outer circumference of the first combined body and the second combined body to surround and form a pair of connecting cavities and press the sealing ring in the receiving groove.

In some embodiments, the binding post extends from the second tongue portion toward the first tongue portion, the binding post including an extension and a crown at the end of the extension and expanding outwardly unit.

In some embodiments, the intermediate shielding sheet is located between the first tongue portion and the second tongue portion, and the intermediate shielding sheet is provided with at least one passage corresponding to the binding post, and the extension portion of the coupling post is sufficiently Fill the channel.

In some embodiments, the coupling hole of the first tongue portion includes a first portion having a circular hole and a second portion having a truncated cone contour, the crown portion of the coupling post being sufficiently filled with a contour of the truncated cone the second part.

In some embodiments, a distal end of the abutting portion of the terminal in the first terminal group is embedded in the first tongue portion; a distal end of the abutting portion of the terminal in the second terminal group is embedded in the second tongue plate In the ministry.

In some embodiments, the intermediate shielding sheet is provided with a plurality of through holes, and the first plastic member passes through the through holes of the intermediate shielding sheet and protrudes to form a plurality of supporting protrusions, and the supporting protrusions are used for corresponding receiving The abutting portion of the second terminal group is supported.

In some implementations, the first base has a plurality of first extending portions extending rearward, and a first spacing is formed between the first extending portions; the second base has a plurality of second extending rearward extensions a second spacing is formed between the second extensions; wherein the first spacing is substantially filled by the corresponding second extension, the second spacing being substantially filled by the corresponding first extension.

In some embodiments, the waterproof connector further includes a fixed shell sleeved on an outer circumference of the shielding shell, the shielding shell surrounding the mating cavity forming a circumferentially closed, only front opening thereof, the fixing shell A plurality of solder feet are extended downward.

In some embodiments, the fixed case is circumferentially fixed to the middle rear portion of the shield case, and the front end of the shield case protrudes forwardly from the fixed case.

In some embodiments, a front soldering leg is disposed on each side of the fixing shell; the rear end of the fixing shell is further bent to extend a plurality of positioning positions in cooperation with the first plastic component and the second plastic component. a sheet; a soldering leg extending downward from each of the two sides of the rear portion of the intermediate shielding sheet.

Compared with the prior art, the present invention combines the first combined body and the second combined body into a whole without a joint gap by skillfully adopting secondary insert molding, and then fits over the shield shell and the first combined body. The sealing ring between the outer circumference of the second combined body makes the connector have better waterproof performance; in addition, the first tongue portion and the second tongue portion are made by the combined structure of the coupling hole and the end-expanded binding column. The combination is integrated and is not easy to be cracked; and, by fitting the abutting portions of the two terminal groups to the two tongue portions, respectively, it is possible to prevent the terminal from being warped and to have high reliability of the connector.

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 will be used 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 indications of the directions (such as up, down, left, right, front and back) are 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 a preferred embodiment of the waterproof connector of the present invention shown in FIGS. 1 to 9, the waterproof connector 10 generally includes: a first combined body 1 by using a second insert molding and the The first combined body 1 is integrated into a second combined body 2, and a shielding shell 3 is disposed on the outer periphery of the first combined body 1 and the second combined body 2, and is sleeved on the first combined body 1 A sealing ring 4 which is pressed into the outer periphery of the second combined body 2 and pressed by the shielding case 3, and a fixed casing 5 which is fixedly attached to the outer periphery of the shielding case 3 is enclosed. The waterproof connector 10 is preferably mounted on a circuit board 20 in a plated manner.

7 to 9, the first assembly 1 includes a first plastic member 11 having a first base 111 and a first tongue portion 112 extending forwardly from the first base 111; A first terminal set 12 is embedded in the first plastic member 11. Each terminal of the first terminal set 12 includes a soldering leg 122 extending rearwardly from the first base 111 and embedded therein. A pair of joint portions 121 of the first tongue portion 112; and an intermediate shielding sheet 13 are embedded in the first plastic member 11.

The first base 111 has a plurality of first extending portions 115, 116, 117 extending rearward, and first intervals 118, 119 are formed between the first extending portions 115, 116, 117. A receiving channel 114 is formed on an outer circumference of the first base 111. The first tongue portion 112 is provided with three coupling holes 113 penetrating vertically. Specifically, the coupling hole 113 has a first portion 1131 having a circular hole profile and a second portion 1132 having a truncated cone profile at the end of the first portion 1131. Referring to FIG. 4, the tip end 1211 of the abutting portion 121 of the terminal 12 is embedded in the first tongue portion 112. This structure can effectively prevent the abutting portion 121 of the terminal 12 from being warped. The intermediate shielding sheet 13 is provided with a passage 133 at a portion corresponding to the coupling hole 113. In the present embodiment, the two passages 133 on both sides are circular holes, and one passage 133 in the middle is a semi-circular groove. The intermediate shielding piece 13 is further provided with a plurality of through holes 135. The first plastic piece 11 passes through the through holes 135 of the intermediate shielding piece 13 and protrudes upward to form a plurality of receiving protrusions 1110. The receiving protrusions 1110 It is used to support the underside of the abutting portion 221 of the second terminal group 22, so that the abutting portion 221 and the intermediate shielding sheet 13 are kept at an appropriate interval during the second insertion molding. A soldering leg 137 extends downward from each of the two sides of the rear portion of the intermediate shielding sheet 13 for electrically grounding the intermediate shielding sheet 13 to prevent crosstalk between the first terminal group 12 and the second terminal group 22.

Referring to FIG. 7 to FIG. 9 , the second assembly 2 includes a second plastic member 21 and a second base portion 211 and a second tongue portion 212 extending forwardly from the second base 211; A second terminal set 22 is embedded in the second plastic member 21, and each terminal of the second terminal set 22 includes a soldering leg 222 extending rearwardly from the second base 211 and embedded therein. A pair of joint portions 221 of the second tongue portion 212.

A receiving channel 214 is formed in an outer circumference of the second base 211. The second tongue portion 212 is joined to the first tongue portion 112 face to face, and correspondingly forms a binding post 213 that is enlarged at the end of the coupling hole 113. Referring to FIG. 3 in combination, in particular, the binding post 213 extends perpendicularly from the second tongue portion 212 toward the first tongue portion 112. The binding post 213 has an extension portion 2131 corresponding to the first portion 1131 filling the coupling hole 113 and a crown portion 2132 corresponding to the second portion 1132 filling the coupling hole 113. Specifically, the extending portion 2131 sufficiently fills the channel 133 on the intermediate shield sheet 13 and the first portion 1131 of the coupling hole 113. The crown 2132 substantially fills the second portion 1132 of the coupling hole 113. Referring to FIG. 4, the distal end 2211 of the abutting portion 221 of the terminal 22 is embedded in the second tongue portion 212. This structure can effectively prevent the abutting portion 221 of the terminal 22 from warping.

The second base 211 has a plurality of second extending portions 215, 216 extending rearward, and a second spacing 218 is formed between the second extending portions 215, 216. The first spaces 118, 119 are filled by corresponding second extensions 215, 216 that are filled by corresponding first extensions 116. The mating structure in which the extending portions are alternately filled and staggered facilitates the second combined body 2 to be firmly integrated with the first combined body 1 and the molten plastic is injected from the rear when the second insert molding process is performed.

It can be understood that the second combined body 2 and the first combined body 1 are combined into a single composite module 6. The first plastic member 11 and the second plastic member 21 are combined to form an integral insulating body 61. Referring to FIG. 5 and FIG. 6 , two first positioning grooves 64 and one second positioning groove 65 are respectively formed on the upper and lower sides of the rear end of the insulating body 61 . The receiving channels 114 and 214 cooperate with each other to form a receiving channel 66 which is disposed on the insulating body 61. Referring to FIG. 3 in combination, the receiving channel 66 has a substantially rectangular cross section and a circular chamfer at the corner.

Referring to FIG. 5 and FIG. 6, the shield case 3 is integrally formed by stamping and bending a metal material. The shielding case 3 is sleeved on the outer circumference of the first combined body 1 and the second combined body 2, and surrounds a pair of cavities 9 which are circumferentially sealed and have an opening only in front thereof (refer to FIGS. 3 and 4 in combination) This structure has a better waterproof effect. The sealing ring 4 is annular, and is sleeved on the receiving channel 66 and pressed by the shielding case 3 in the receiving channel 66. 3 and 4, the sealing ring 4 has a circular cross section (the natural shape of the sealing ring 4 when it is not pressed by the shielding case 3). A flat inner surface of the rear portion of the shield case 3 is pressed outside the seal ring 4, and a rear end 31 of the shield case 3 projects rearward relative to the seal ring 4. The sealing ring 4 is deformed by the deformation of the shielding shell 3, and the receiving channel 66 can be well filled, thereby sealing the joint gap between the shielding shell 3 and the insulating body 61, preventing the water droplets from facing from the front. The cavity 9 penetrates backwards to improve the waterproof effect.

Referring to FIG. 5 and FIG. 6 , the fixing shell 5 is integrally stamped and bent into a metal material, and is fixed to the middle rear portion of the shielding shell 3 , by which the shielding shell 3 can be fixed to the circuit board 20 . The front end of the shield case 3 protrudes forwardly from the fixed case 5, so that the front end of the shield case 3 is mounted when the waterproof connector 10 is mounted to a device such as a mobile phone (not shown). It can be inserted into the opening of the outer casing of the mobile phone and fit tightly to achieve a better waterproof effect. The fixed case 5 and the shield case 3 are integrated by laser welding. The fixed casing 5 includes a body 51, two front welding legs 52 and two rear welding legs 53 extending from the front and rear sides of the body 51, and two first extending from the bottom side of the rear end of the body 51. The positioning piece 54 and the two second positioning pieces 55 extending from the top side of the rear end of the body 51. Specifically, each of the front soldering legs 52 is bent horizontally and downwardly at the lower end of the tearing opening of the fixed casing 5. This structure extending at the lower end of the tearing opening is advantageous for improving the structural strength of the fixed casing 5 and the circuit board 20. The two first positioning pieces 54 are vertically bent from the bottom side of the fixed case 5 and cooperate with the first positioning groove 64 on the insulating body 61; the two second positioning pieces 55 are The top side of the fixed shell extends obliquely oppositely and cooperates with the second positioning groove 65 on the insulating body 61. The mating structures of the positioning pieces 54, 55 of the different directions of action and the positioning grooves 64, 65 are advantageous for the fixed casing 5 to be firmly coupled with the insulating body 61.

The manufacturing process of the waterproof connector of the present invention generally includes: after the first terminal group 12 and the intermediate shielding sheet 13 are loaded into an injection mold (not shown), the insert molding process is performed to obtain the first combined body 1; The second terminal group 22 is added to the body 1 and then subjected to an insert molding process to obtain a second combined body 2 integrated with the first combined body 1; the sealing ring 4 is loaded into the receiving channel 66; The shield case 3 is sheathed; the fixed case 5 is finally fitted and welded to the shield case 3.

Compared with the prior art, the present invention combines the first combined body 1 and the second combined body 2 into one whole (ie, the composite module 6) without a joint gap by skillfully adopting secondary insert molding, and then fits over the sleeve. The sealing ring 4 between the shielding shell 3 and the outer circumferences of the first combining body 1 and the second combining body 2 makes the connector 10 have better waterproof performance; in addition, by forming the end-expanded binding post 213 The combination in which the coupling hole 113 cannot be easily taken out makes the first tongue portion 112 and the second tongue portion 212 firmly integrated and is not easily cracked; and, by making the abutting portions 121, 221 of the two terminal groups 12, 22 The two tongue portions 112 and 212 are respectively embedded in the tongue portions to prevent the terminal from being warped, so that the waterproof connector 10 has high reliability.

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 requested by the scope of application for patents.

10‧‧‧Waterproof connector
20‧‧‧ boards
1‧‧‧ first combination
11‧‧‧First plastic parts
111‧‧‧First base
112‧‧‧First tongue part
113‧‧‧Combination hole
1131‧‧‧Part 1
1132‧‧‧Part II
114‧‧‧ Containment channel
115, 116, 117‧‧‧ first extension
118, 119‧‧‧ first interval
1110‧‧‧Support bulge
12‧‧‧First terminal group
121‧‧‧Docking Department
1211‧‧‧End
122‧‧‧Weld Department
13‧‧‧Intermediate shielding film
133‧‧‧ channel
135‧‧‧Perforation
137‧‧‧welding feet
2‧‧‧Second combination
21‧‧‧Second plastic parts
211‧‧‧Second base
212‧‧‧Second tongue department
213‧‧‧ binding column
2131‧‧‧Extension
2132‧‧‧ crown
214‧‧‧ Containment channel
215, 216‧‧‧ second extension
218‧‧‧second interval
22‧‧‧Second terminal group
221‧‧‧Docking Department
2211‧‧‧End
222‧‧‧Weld Department
3‧‧‧Shield housing
31‧‧‧ Backend
4‧‧‧ sealing ring
5‧‧‧Fixed shell
51‧‧‧Ontology
52‧‧‧Pre-welding feet
53‧‧‧After welding feet
54‧‧‧First positioning piece
55‧‧‧Second positioning piece
6‧‧‧Composite module
61‧‧‧Insulated body
64‧‧‧First positioning slot
65‧‧‧Second positioning slot
66‧‧‧ Containment channel
9‧‧‧ docking chamber

Other features and effects of the present invention will be apparent from the following description of the drawings, wherein: FIG. 1 is a perspective view of a preferred embodiment of the present waterproof connector and a circuit board; Figure 3 is a cross-sectional view taken along line BB of Figure 2; Figure 4 is a cross-sectional view taken along line BB of Figure 2; Figure 5 is a preferred embodiment of the waterproof connector of the present invention FIG. 6 is an exploded perspective exploded view of another preferred embodiment of the waterproof connector of the present invention; FIG. 7 is a perspective view of the first combined body, the second combined body and the sealing ring of the waterproof connector of the present invention; 8 is an exploded perspective view of the first combined body and the second combined body of the present waterproof connector; and FIG. 9 is a further exploded perspective view of FIG.

20‧‧‧ boards

1‧‧‧ first combination

112‧‧‧First tongue part

2‧‧‧Second combination

212‧‧‧Second tongue department

213‧‧‧ binding column

3‧‧‧Shield housing

31‧‧‧ Backend

4‧‧‧ sealing ring

5‧‧‧Fixed shell

66‧‧‧ Containment channel

9‧‧‧ docking chamber

Claims (10)

A waterproof connector includes: a first combined body, comprising: a first plastic member having a first base and a first tongue portion extending forward from the first base, the first The tongue plate portion is provided with at least one coupling hole vertically; a first terminal group is embedded in the first plastic member, each terminal includes a soldering foot protruding from the first base and exposed to be embedded a pair of joints on the first tongue portion; and an intermediate shield sheet embedded in the first plastic member; a second joint comprising: a second plastic member that is reshaped in the a second base and a second tongue portion extending forwardly from the second base, the second base is combined with the first base and formed together An annular receiving groove, the second tongue portion is combined with the first tongue portion, and correspondingly forms at least one binding post filled in the coupling hole; a second terminal group is embedded in The second plastic member, each of the terminals includes a soldering foot extending from the second base and is embedded in the second a pair of joints on the plate portion; a sealing ring sleeved on the receiving channel; and a shielding shell disposed on the outer circumference of the first combined body and the second combined body to surround the pair of connecting cavities And sealing the sealing ring in the receiving channel. The waterproof connector of claim 1, wherein the binding post extends from the second tongue portion toward the first tongue portion, the binding post including an extension portion and an end portion of the extension portion a crown that expands outward. The waterproof connector of claim 2, wherein the intermediate shielding sheet is located between the first tongue portion and the second tongue portion, and the intermediate shielding sheet is provided with at least one passage corresponding to the binding post, the combination The extension of the column fills the passage sufficiently. The waterproof connector of claim 3, wherein the coupling hole of the first tongue portion comprises a first portion having a circular hole and a second portion having a truncated cone profile, the crown of the coupling post being sufficiently filled Full of the second part of the truncated cone profile. The waterproof connector of claim 1, wherein a distal end of the abutting portion of the terminal in the first terminal group is embedded in the first tongue portion; and a distal end of the abutting portion of the terminal in the second terminal group is buried In the second tongue portion. The waterproof connector of claim 1, wherein the intermediate shielding sheet is provided with a plurality of perforations, and the first plastic member passes through the perforations of the intermediate shielding sheet and protrudes to form a plurality of supporting protrusions. The bracket is used to correspond to the abutting portion of the second terminal group. The waterproof connector of claim 1, wherein the first base has a plurality of first extending portions extending rearward, and a first spacing is formed between the first extending portions; the second base has a plurality of a second extending portion extending rearward, a second interval formed between the second extending portions; wherein the first interval is sufficiently filled by the corresponding second extending portion, the second interval being sufficiently filled by the corresponding first extending portion . The waterproof connector of any one of claims 1 to 7, wherein the waterproof connector further comprises a fixed casing sleeved on an outer circumference of the shielding casing, the shielding casing surrounding forming a circumferential seal, only the front thereof The docking cavity has an opening that extends downwardly from the plurality of soldering legs. The waterproof connector of claim 8, wherein the fixed case is circumferentially fixed to a middle rear portion of the shield case, and a front end of the shield case protrudes forwardly from the fixed case. The waterproof connector of claim 8, wherein each of the fixed shells is provided with a front soldering leg; the rear end of the fixing shell is further bent to extend out from the first plastic component and the second plastic component. Cooperating with a plurality of positioning pieces; a welding leg extending downward from each of the two sides of the rear side of the intermediate shielding piece.