TWM525009U - 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 CN201420289309.2 discloses an electrical connector comprising a first module comprising a first insulating member and a plurality of first conductive terminals and a grounded metal piece embedded in the first insulating member, each The first conductive terminal has a soldering portion of the in-line soldering type, wherein the first insulating member includes a tongue portion having an opposite first surface and a second surface formed on the second surface a plurality of terminal receiving slots, the grounding metal piece having a plate embedded in the tongue portion and at least one grounding leg extending from the plate body; a second module overlapping the first module Together, the second module includes a second insulating member and a plurality of second conductive terminals embedded in the second insulating member, each of the second conductive terminals having a surface soldering type soldering portion, the second conductive The abutting portion of the terminal is correspondingly received in the terminal receiving groove and exposed on the second surface, and the first insulating member and the second insulating member are combined to form an insulating body; an inner shielding shell fixed to the insulating On the body and attached to The rear portion of the tongue portion extends for a distance; and an outer shield housing. The body of such an electrical connector It is assembled by stacking two modules, and it is easy to form a joint gap between the two modules, and the waterproof effect is not ideal; in addition, the tail portion of the first conductive terminal and the tail portion of the ground metal piece are directly soldered to the circuit. On the board, the in-line soldering method requires a plurality of soldering holes to be opened on the circuit board. It is extremely difficult to open the soldering holes in the case where the terminals are arranged closely, and the structural strength of the circuit board is easily damaged. The electrical connector is mounted to The soldering reliability of the application board is not ideal.

The technical problem to be solved by the present invention is to overcome the deficiencies of the prior art described above, and to provide an electrical connector with good waterproof effect and improved welding reliability.

The present invention provides an electrical connector for the above technical problem, comprising: a first terminal module comprising: a first insulating member, the first insulating member having a first base and being forwarded by the first base a first tongue plate extending; a plurality of first conductive terminals, each of the first conductive terminals including a first abutting portion exposed on a lower surface of the first tongue plate, and a first buried in the first base a first fixing portion and a first soldering portion capable of soldering the surface to a circuit board; and an intermediate shielding sheet partially embedded in the first insulating member and located above the first conductive terminals; a two-terminal module comprising: a second insulating member; and a plurality of a second conductive terminal, each of the second conductive terminals includes a second abutting portion exposed on the upper surface of the first tongue, a second fixing portion embedded in the second insulating member and capable of correspondingly soldering to the circuit a second soldering portion of the board; wherein the second insulating member is formed on the first insulating member by an insert molding process and integrated into a whole body, and the second insulating member is formed correspondingly directly above the first soldering portions And the outer shielding shell is sleeved on the outer circumference of the first terminal module and the second terminal module, and surrounds the first tongue plate and forms a forward direction correspondingly; A pair of open cavities.

In some embodiments, the second insulating member has a second base that cooperates with the first base and a protrusion extending forward from the second base, each of the second conductive terminals The second abutting portion passes forward through the protruding portion.

In some embodiments, the second pedestal has a solder leg positioning portion extending rearward, the first soldering portion is attached to the bottom side surface of the solder fillet positioning portion, and the die pin is perforated through the upper and lower sides. The solder fillet positioning portion.

In some embodiments, the second soldering portion of each of the second conductive terminals is also surface-welded, and the second soldering portion is also attached to the bottom side surface of the solder tail positioning portion.

In some embodiments, the second welds are arranged rearward of the first welds and project rearwardly from the rear side of the fillet positioning portion.

In some embodiments, the intermediate shielding sheet has at least one grounding leg extending downwardly from a bottom side surface of the solder fillet positioning portion.

In some embodiments, the first tongue has a thicker rear portion and a thinner front portion, and the rear portion of the first tongue has an extended length that is equivalent to the extension of the protrusion of the second insulating member. .

In some embodiments, the electrical connector further includes two inner shielding sheets disposed on an outer circumference of the first insulating member and the second insulating member, wherein an inner shielding sheet is attached to a rear portion of the first tongue, Another inner shield is attached to the projection, and the outer shield encloses the two inner shields therein.

In some embodiments, a first sealing groove is disposed on an outer circumference of the first base, and a second sealing groove is disposed on the outer circumference of the second base; the electrical connector further includes Inserting a sealing ring in the first sealing groove and the second sealing groove for sealing a joint gap between the outer shielding shell and the first insulating member and the second insulating member.

In some embodiments, the outer shield shell is formed by combining a first metal shell and a second metal shell; the first metal shell has a complete elliptical cylinder shape surrounding the outer circumference of the first tongue plate Forming the mating cavity, the rear end of the first metal shell presses the sealing ring to the first terminal module and the second terminal module to achieve sealing; the second metal shell is sleeved on the first metal shell The outer circumference extends downwardly from a plurality of fixed feet.

In some implementations, the second insulating member corresponds to each of the first soldering A die pin perforation is formed directly above the joint.

Compared with the prior art, the new type of electrical connector combines the first terminal module and the second terminal module into a whole without a joint gap by means of secondary insert molding, and has better waterproof performance; By providing a die pin perforation on the second insulating member, the die can pass through the soldering portion of the first conductive terminal during the molding of the insert, thereby effectively preventing the welded portion of the first conductive terminal from warping upward. Can improve welding reliability.

10‧‧‧Electrical connector

1‧‧‧First Terminal Module

11‧‧‧First insulation

111‧‧‧First base

112‧‧‧First tongue

1121‧‧‧ Rear

1122‧‧‧ front

115‧‧‧First sealing groove

12‧‧‧First conductive terminal

121‧‧‧First docking department

122‧‧‧First Welding Department

123‧‧‧First fixed department

13‧‧‧Intermediate shielding film

131‧‧‧ board

132‧‧‧Grounding feet

2‧‧‧Second terminal module

21‧‧‧Second insulation

211‧‧‧Second base

212‧‧‧diffuse

215‧‧‧Second sealing groove

219‧‧‧ soldering foot positioning

22‧‧‧Second conductive terminal

221‧‧‧Second docking department

222‧‧‧Second welding department

223‧‧‧Second fixed department

29‧‧•needle piercing

3‧‧‧Outer shield

31‧‧‧First metal shell

32‧‧‧Second metal shell

4‧‧‧ inner shield

5‧‧‧ sealing ring

9‧‧‧ docking chamber

20‧‧‧ boards

Other features and effects of the present invention will be apparent from the following description of the drawings. FIG. 1 is a perspective view of a preferred embodiment of the present invention and a circuit board; FIG. BRIEF DESCRIPTION OF THE DRAWINGS FIG. 3 is a cross-sectional view taken along line BB of FIG. 2; FIG. 4 is an exploded perspective view of a preferred embodiment of the present invention. FIG. 5 is an exploded perspective view further exploded on the basis of FIG. 4; FIG. 6 and FIG. 7 are exploded perspective views of two different viewing angles of two modules in the preferred embodiment of the present invention; Figure 8 is an exploded perspective view further exploded on the basis of Figure 6.

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 Figures 1 through 8, the present invention provides an electrical connector 10, preferably, It is a waterproof USB Type-C type electrical connector socket. The electrical connector 10 includes a first terminal module 1 and a second terminal module 2 integrated with the first terminal module 1 and attached to the outer circumference of the two terminal modules 1 and 2 The inner shielding piece 4 is mounted on a sealing ring 5 on the outer circumference of the two terminal modules 1, 2, and is surrounded by the outer circumferences of the two terminal modules 1, 2 and pressed against the outer side of the sealing ring 5. Shielding shell 3. The electrical connector 10 is preferably mounted on a circuit board 20 in a sinking manner.

Referring to FIG. 6 , FIG. 7 and FIG. 8 , the first terminal module 1 includes a first insulating member 11 having a first base 111 and a first tongue extending forward from the first base 111 . The board 112 has a plurality of first conductive terminals 12 partially embedded on the first insulating member 11 and an intermediate shielding sheet 13 partially embedded on the first insulating member 11 and exposed to both sides. A first sealing groove 115 is defined in an outer circumference of the first base 111. The first tongue 112 has a thicker rear portion 1121 and a thinner front portion 1122. Each of the first conductive terminals 12 has a first abutting portion 121 exposed on a lower surface of the front portion 1122 of the first tongue 112, and a first soldering type of a surface soldering type extending rearwardly from the first insulating member 11. a portion 122 and a first fixing portion 123 embedded in the first insulating member 11. The intermediate shielding piece 13 has a plate body 131 embedded in the first insulating member 11 and two grounding legs 132 extending from the plate body 131 to the rear side of the first insulating member 11 . The first soldering portions 122 can be soldered to the circuit board 20 correspondingly to the surface, and the ground soldering pins 132 can be soldered to corresponding ground pads (not shown) on the circuit board 20.

Referring to FIG. 6 , FIG. 7 and FIG. 8 , the second terminal module 2 includes a second insulating member 21 and a plurality of second conductive terminals 22 partially embedded in the second insulating member 21 . The second insulating member 21 is directly formed on the first insulating member 11 by an insert molding process, and a plurality of die pin holes 29 are formed correspondingly directly above the first soldering portions 122. In the present embodiment, the second insulating member 21 is formed with a die insertion hole 29 directly above each of the first welded portions 122. Therefore, when the second insulating member 21 is formed, the die pins on the injection mold can be pressed through the pin holes 29 to the top surfaces of the first soldering portions 122, effectively preventing the first soldering portions 122 from being formed in the molding process. During the process, the force is deformed upward and warped, ensuring the reliability of the soldering of the electrical connector 10 to the circuit board 20. It is worth mentioning that in some embodiments, the plurality of die pin perforations 29 may also be combined into one or more of the laterally extending larger pin holes (not shown).

Specifically, the second insulating member 21 has a second base 211 that cooperates with the first base 111 and a forward portion of the second base 211 that cooperates with the first tongue 112. Projection 212. The second base 211 is provided with a second sealing groove 215 communicating with the first sealing groove 115. The protruding portion 212 has an extended length shorter than the first tongue 112 and corresponds to an extended length of the rear portion 1121 of the first tongue 112. The second conductive terminal 22 has a second abutting portion 221 extending forwardly from the protruding portion 212, and a second soldering portion 222 extending from the surface of the second insulating member 21, and embedded therein. A second fixing portion 223 of the second insulating member 21.

Referring to FIG. 3, the second base 211 has a solder tail positioning portion 219 extending rearward relative to the rear end of the first base 111. The front lower surface of the solder tail positioning portion 219 is joined to the rear upper surface of the first base 111. The bottom side surface of the solder fillet positioning portion 219 is flush. The first soldering portion 122 is attached to the bottom side surface of the solder fillet positioning portion 219. The pin piercing hole 29 penetrates the leg positioning portion 219 up and down. The second welded portion 222 is also attached to the bottom side surface of the solder fillet positioning portion 219. These second welded portions 222 are arranged rearward of the first welded portions 122 and project rearwardly from the rear side of the fillet positioning portion 219. Since the upper surface of the first soldering portion 122 and the upper surface of the second soldering portion 222 are both attached to the bottom surface of the solder tail positioning portion 219, the first soldering portion 122 and the second soldering portion 222 are less likely to be deformed, thereby enabling the first soldering portion 122 and the second soldering portion 222 to be deformed. The welding reliability when the electrical connector 10 is combined with the circuit board 20 is improved.

Referring to FIG. 3, the portion of the intermediate shielding sheet 13 extending from the first insulating member 11 is partially embedded in the soldering leg positioning portion 219. The two grounding legs 132 of the intermediate shielding sheet 13 project downward from the bottom side of the soldering leg positioning portion 219. In the present embodiment, the two grounding legs 132 are located between the first welding portions 122 and the second welding portions 222 in the front-rear direction. This structure covers the upper portion of the intermediate shield member 13 protruding from the first insulating member 11 through the solder fillet positioning portion 219, so that the ground solder fillet 132 is less likely to be deformed.

Referring to FIG. 3, FIG. 4 and FIG. 5, the outer shield shell 3 is formed by combining a first metal shell 31 and a second metal shell 32. The first metal shell 31 is in the form of a complete elliptical cylinder Forming the outer periphery of the first tongue 112 to form the mating cavity 9. The rear end of the first metal shell 31 presses the sealing ring 5 to the first terminal module 1 and the second terminal module 2 Thereby achieving a rear seal. The second metal shell 32 is sleeved on the outer circumference of the first metal shell 31 and extends downwardly to a plurality of fixing legs. The double sleeve housing structure can firmly fix the outer shield shell 3 to the circuit board. At the same time as 20, the water droplets from the outside are prevented from penetrating backward from the docking chamber 9, thereby improving the waterproof ability of the electrical connector 10. The outer shield shell 3 is sleeved on the outer circumference of the first terminal module 1 and the second terminal module 2, and surrounds the first tongue plate 112 and the protruding portion 212 correspondingly to form a pair of cavities 9 open to the front. .

Referring to Figures 3, 4 and 5, the inner shield 4 has a stepped shape, and the two inner shields 4 cooperate to form an inner shield. One of the inner shielding sheets 4 is attached to the rear portion 1121 of the first tongue plate 112, and the other inner shielding sheet 4 is attached to the protruding portion 212. Preferably, the two inner shielding sheets 4 and the outer shielding shell 3 are tightly electrically connected together by means such as laser welding.

Referring to FIG. 3, FIG. 4 and FIG. 5, the sealing ring 5 is correspondingly inserted into the first sealing groove 115 and the second sealing groove 215 for sealing the outer shielding shell 3 and the first insulating member 11 and the first The bonding gap between the two insulating members 21.

The assembly process of the new electrical connector 10 generally includes: firstly, the first conductive terminal 12 and the intermediate shielding sheet 13 are fixed in an injection mold (not shown), and the molten plastic is injected into the insert to form the first An insulating member 11 to thereby obtain the first terminal module 1; then, the second conductive terminal 22 and the first terminal module 1 are again Fixed in another injection mold (not shown), inserting molten plastic into the second insulating member 21 by insert molding, thereby forming the second terminal integrated with the first terminal module 1 The module 2, at this time, the die in the other injection mold will abut against the first soldering portion 122, preventing the first soldering portion 122 from warping upwards to cause product defects, and at the same time, at the position occupied by the die pin Forming the pin perforations 29; then, the two inner shielding sheets 4 are correspondingly mounted on the first terminal module 1 and the second terminal module 2; then, the sealing ring 5 is correspondingly inserted into the first sealing The outer casing 3 is sleeved into the outer periphery of the first terminal module 1, the second terminal module 2, the two inner shielding sheets 4, and the sealing ring 5.

The first electrical module 10 is combined with the second terminal module 2 into a whole body without a joint gap to make it have better waterproof performance; and A die pin perforation 29 is provided on the second insulating member 21, and the die is passed through the first soldering portion 122 of the first conductive terminal 12 during the insert molding, so that the first conductive terminal 12 can be effectively prevented. The first soldering portion 122 is warped upward, which can increase the goodness of the product and improve the soldering reliability. In addition, the first conductive terminal 12 and the second conductive terminal 22 are transmitted through the soldering leg positioning portion 219 on the second insulating member 21. First, the second welding portions 122, 222 are positioned to improve the welding reliability.

The above is only a preferred embodiment of the present invention, and is not intended to limit the embodiments of the present invention, and the person skilled in the art according to the main concept and the essence of the present invention God, it is very convenient to carry out corresponding modifications or modifications, so the scope of protection of this new type should be based on the scope of protection applied for in the scope of patent application.

10‧‧‧Electrical connector

1‧‧‧First Terminal Module

11‧‧‧First insulation

12‧‧‧First conductive terminal

121‧‧‧First docking department

122‧‧‧First Welding Department

123‧‧‧First fixed department

13‧‧‧Intermediate shielding film

131‧‧‧ board

132‧‧‧Grounding feet

2‧‧‧Second terminal module

21‧‧‧Second insulation

219‧‧‧ soldering foot positioning

22‧‧‧Second conductive terminal

221‧‧‧Second docking department

222‧‧‧Second welding department

223‧‧‧Second fixed department

29‧‧•needle piercing

3‧‧‧Outer shield

4‧‧‧ inner shield

5‧‧‧ sealing ring

9‧‧‧ docking chamber

20‧‧‧ boards

Claims (11)

An electrical connector includes: a first terminal module comprising: a first insulating member, the first insulating member having a first base and a first tongue extending forward from the first base a first conductive terminal, each of the first conductive terminals includes a first abutting portion exposed on a lower surface of the first tongue, a first fixing portion embedded in the first base and capable of corresponding Surface soldering to a first soldering portion of a circuit board; and an intermediate shielding sheet partially embedded in the first insulating member and above the first conductive terminals; a second terminal module including a second insulating member; and a plurality of second conductive terminals, each of the second conductive terminals including a second abutting portion exposed on an upper surface of the first tongue, and a first embedded in the second insulating member a second fixing portion and a second welding portion capable of being soldered to the circuit board; wherein the second insulating member is formed on the first insulating member by an insert molding process and combined into a whole, the second insulating member is Directly above these first welds Corresponding to the at least one pin perforation formed by the upper and lower through holes; and an outer shielding shell sleeved on the outer circumference of the first terminal module and the second terminal module, surrounding the first tongue plate and correspondingly forming A pair of cavities that open forward. The electrical connector of claim 1, wherein the second insulating member has a second base that cooperates with the first base and a protrusion that extends forwardly from the second base. A second abutting portion of each of the second conductive terminals extends forwardly out of the protruding portion. The electrical connector of claim 2, wherein the second base has a rearward And extending a solder fillet positioning portion, the first soldering portion is attached to a bottom side surface of the solder fillet positioning portion, and the die pin perforation penetrates the solder leg positioning portion up and down. The electrical connector of claim 3, wherein the second soldering portion of each of the second conductive terminals is also surface-welded, and the second soldering portion is also attached to the bottom side surface of the solder tail positioning portion. The electrical connector of claim 4, wherein the second soldering portions are arranged rearward of the first soldering portions and project rearwardly from the rear side of the soldering leg positioning portion. The electrical connector of claim 3, wherein the intermediate shielding sheet has at least one grounding leg extending downwardly from a bottom side surface of the solder fillet positioning portion. The electrical connector of claim 2, wherein the first tongue has a thicker rear portion and a thinner front portion, the extension of the rear portion of the first tongue and the protrusion of the second insulator The extension of the extension is equivalent. The electrical connector of claim 7, wherein the electrical connector further comprises two inner shielding sheets disposed on an outer circumference of the first insulating member and the second insulating member, wherein an inner shielding sheet is attached to the first At the rear of the tongue plate, another inner shielding sheet is attached to the protruding portion, and the outer shielding shell surrounds the two inner shielding sheets. The electrical connector of claim 1, wherein a first sealing groove is disposed on an outer circumference of the first base, and a second sealing groove communicating with the first sealing groove is disposed on an outer circumference of the second base; The electrical connector further includes a sealing ring that fits into the first sealing groove and the second sealing groove for sealing a joint gap between the outer shielding shell and the first insulating member and the second insulating member. The electrical connector of claim 9, wherein the outer shield is formed by combining a first metal shell and a second metal shell; the first metal shell is in the form of a complete elliptical cylinder surrounded by the first The outer periphery of a tongue plate forms the mating cavity, and the rear end of the first metal shell presses the sealing ring to the first terminal module and the second terminal module to achieve sealing; the second metal shell is sleeved A plurality of fixing legs extend downward from the outer circumference of the first metal shell. The electrical connector of claim 1, wherein the second insulating member is formed with a die pin perforation directly above each of the first solder portions.