CN102983431B - Electric connector - Google Patents

Abstract

An electrical connector for mounting on an external circuit board. The electrical connector includes an insulating body with a bottom wall, and a mounting terminal extending from the insulating body beyond the bottom wall. The bottom wall is provided with a terminal protruding surface on which the mounting terminal extends beyond the bottom wall, and the protruding surface of the terminal is provided with a supporting leg protruding from the external circuit board, and the supporting leg is provided with a supporting surface docked with the external circuit board. The insulating body is also provided with a bottom surface which is stepped with the protruding surface of the terminal. In the direction in which the mounting terminal extends beyond the bottom wall, the bottom surface is higher than the terminal protruding surface, and the supporting surface is higher than the bottom surface. Since the protruding surface of the terminal is lower than the bottom surface, the distance between the protruding surface of the terminal and the supporting surface is increased, effectively preventing tin connection of the installed terminal.

Description

electrical connector

【Technical field】

The invention relates to an electrical connector, in particular to a bottom wall structure in the electrical connector that prevents tinning of mounting terminals.

【Background technique】

Currently used RJ45 electrical connectors generally include an insulating body with a bottom wall, mounting terminals extending beyond the bottom wall for mounting on an external circuit board, and supporting feet for supporting the external circuit board. The installation terminals of the RJ45 electrical connector are very close to each other. If the RJ45 electrical connector is installed on an external circuit board for welding, the small distance between the supporting legs and the bottom wall will easily cause tin connection between the installation terminals. Therefore, it is necessary to design an electrical connector that prevents tin connection.

【Content of invention】

The technical problem to be solved by the present invention is to provide an electrical connector that prevents soldering of mounting terminals.

In order to solve the above problems, the present invention provides an electrical connector for installation on an external circuit board. The electrical connector includes an insulating body provided with a bottom wall, and a mounting terminal extending from the insulating body beyond the bottom wall. The wall is provided with a mounting terminal extending beyond the terminal protruding surface of the bottom wall, and the protruding surface of the terminal is provided with a supporting leg facing the external circuit board, and the supporting leg is provided with a supporting surface for docking with the external circuit board. The bottom surface which is stepped from the terminal protruding surface is higher than the terminal protruding surface in the direction where the terminal is installed extending beyond the bottom wall, and the supporting surface is higher than the bottom surface.

Compared with the prior art, the present invention relatively increases the distance between the supporting surface and the protruding surface of the terminal because the protruding surface of the terminal is lower than the bottom surface, thereby effectively preventing the phenomenon of tin connection.

【Description of drawings】

FIG. 1 is a three-dimensional assembled view of an electrical connector according to the present invention.

FIG. 2 is a perspective assembled view of the electrical connector shown in FIG. 1 from another perspective.

FIG. 3 is a partially exploded view of the electrical connector shown in FIG. 1 .

FIG. 4 is a partially exploded view of the electrical connector shown in FIG. 1 from another perspective.

FIG. 5 is a perspective view of the insulating body of the electrical connector shown in FIG. 1 .

FIG. 6 is a cross-sectional view along the direction A-A of the electrical connector electrically connected in FIG. 1 .

[Description of main component symbols]

first insulating body 1 butt wall 10 electrical connector 100 containment cavity 11 lowest surface 111 top wall 12 slotting 121 block 122 Bump 123 side wall 13 groove 131 first bottom wall 14 first terminal protruding surface 141 first support foot 142 first support surface 1421 bottom surface 143 positioning post 144 through hole 145 storage tank 15 second insulating body 2 second bottom wall twenty one Second terminal protruding side twenty two Second terminal slot twenty three second support leg twenty four second support surface 241 gap 242 Shielding shell 4 to open 41 light emitting device 5 first installed terminal 51 Terminal module 6 Second mounting terminal 61 first row of terminals 611 The second row of terminals 612 internal circuit board 62 Butt terminal 63 Electronic component 64

The following specific embodiments will further illustrate the present invention in conjunction with the above-mentioned drawings.

【detailed description】

As shown in Figures 1 to 2, an electrical connector 100 according to the present invention is used for mounting on an external circuit board (not shown), the electrical connector 100 includes an insulating body 1 with bottom walls 14, 21 , 2, the mounting terminals 51, 61 extending from the insulating body 1, 2 beyond the bottom walls 14, 21, the shielding shell 4 covering the insulating body 1, 2, and the light emitting device used to indicate the working state of the electrical connector 100 5.

As shown in FIGS. 2 to 4 , the insulating bodies 1 and 2 include a first insulating body 1 and a second insulating body 2 matched with the first insulating body 1 . The first insulating body 1 is provided with a docking wall 10, a receiving chamber 11 recessed from the docking wall 10, a top wall 12 located on the top side of the receiving chamber 11, side walls 13 located on both sides of the receiving chamber 11 and a connecting top. The wall 12 is a first bottom wall 14 opposite to the side wall 13 and an external circuit board (not shown). The first bottom wall 14 and the abutment wall 10 are located at opposite ends of the first insulating body 1 . The receiving cavity 11 penetrates upwards through the top wall 12 to form a slot 121 , and there are locking blocks 122 on both sides of the slot 121 , which can be engaged with the locking blocks 122 after the docking connector (not shown) is inserted to prevent signal interruption caused by accidental falling off. Close to the locking block 122 , the first insulating body 1 is provided with a receiving groove 15 for receiving the light emitting device 5 . The top wall 12 further protrudes upwards with a protrusion 123 , and the side wall 13 has a groove 131 extending vertically inside. The shielding shell 4 is provided with an opening 41 corresponding to the protrusion 123 . The light emitting device 5 has a first mounting terminal 51 for mounting on an external circuit board (not shown). The first bottom wall 14 is provided with the first terminal 51 extending beyond the first terminal protruding surface 141 of the first bottom wall 14, and the first terminal protruding surface 141 protrudes to the external circuit board (not shown) with a rectangular parallelepiped. The first supporting leg 142 is provided with a first supporting surface 1421 abutting with an external circuit board (not shown). The first bottom wall 14 is also provided with a bottom surface 143 that is stepped from the first terminal protruding surface 141, and the bottom surface 143 is provided with a positioning post 144 protruding to the external circuit board (not shown) to better position the electrical connector. 100 is mounted on an external circuit board (not shown). The receiving cavity 11 has a lowest surface 111 close to the first bottom wall 14 , and the projection of the lowest surface 111 falls within the range of the bottom surface 143 (as shown in FIG. 5 ). In the direction in which the first mounting terminals 51 extend beyond the first bottom wall 14 , the bottom surface 143 is higher than the first terminal protruding surface 141 , and the first supporting surface 1421 is higher than the first bottom surface 143 . In this way, the distance between the first terminal protruding surface 141 and the first supporting surface 1421 is greater than 0.4 mm to prevent the first mounting terminal 51 from being tinned. In addition, two sides of the first support leg 142 are provided with a through hole 145 communicating with the receiving cavity 11 , and the through hole 145 corresponds to the locking block 122 .

The second insulating body 2 has a second bottom wall 21 facing the external circuit board, the second bottom wall 21 has a second terminal protruding surface 22, a second terminal groove 23, and a second terminal protruding surface 22 facing the external circuit board. Two second supporting feet 24 are protruded. The second supporting leg 24 is provided with a second supporting surface 241 that is in contact with the external circuit board. The second terminal slot 23 is located between the two second supporting legs 24 . The electrical connector 100 includes a terminal module 6 mounted on the second insulating body 2 , and the terminal module 6 has a second mounting terminal 61 , an internal circuit board 62 , a connecting terminal 63 , and several other electronic components 64 . The second mounting terminals 61 extend from the second terminal groove 23 beyond the second terminal protruding surface 22 . The second supporting leg 24 is located around the second mounting terminal 61 , and the second supporting leg 24 is substantially "L" shaped. The second installation terminal 61 includes a first row of terminals 611 and a second row of terminals 612 , and the first row of terminals 611 and the second row of terminals 612 are arranged alternately. The two second supporting legs 24 are respectively provided with notches 242 near the first row of terminals 611 and the second row of terminals 612 . The second supporting leg 24 arranged in this way increases the pressure-bearing area of the second supporting leg 24 as much as possible after providing enough space for the mounting terminal to avoid joint welding.

As shown in FIG. 6 , the second supporting surface 241 is located at the same level as the first supporting surface 1421 , and the second terminal extending surface 22 is located at the same level as the first terminal extending surface 141 . The bottom surface 143 is located between the first terminal extending surface 141 and the second terminal extending surface 22 , and is higher than the first terminal extending surface 141 and the second terminal extending surface 22 .

In the present invention, the protruding surfaces 141 and 22 of the first and second terminals of the first and second insulating bodies 1 and 2 are lower than the bottom surface 143 . That is, part of the material of the first and second bottom walls 14, 21 around the first and second mounting terminals 51, 61 is removed, so that the protruding surface of the first and second mounting feet 142, 24 relative to the first and second terminals is realized. The relative elevation of 141 and 22 increases the distance between the external circuit board and the protruding surface of the terminal, and prevents the possibility of poor solder connection of the installed terminal. In addition, keeping the bottom surface 143 corresponding to the lowest surface 111 of the accommodating cavity unchanged prevents the problem that the first bottom wall 14 is too thin and easy to penetrate.

Claims (10)

1. An electrical connector, used to be installed on an external circuit board, the electrical connector includes an insulating body provided with a bottom wall, a mounting terminal extending beyond the bottom wall from the insulating body, and the bottom wall is provided with a mounting terminal extending The protruding surface of the terminal beyond the bottom wall, the protruding surface of the terminal is provided with a supporting foot on the external circuit board. shaped bottom surface, which is characterized in that: in the direction where the mounting terminal extends beyond the bottom wall, the bottom surface is higher than the terminal extension surface, the support surface is higher than the bottom surface, and the bottom surface is suspended above the external circuit board. The body is also provided with a docking wall on the opposite end of the bottom wall. The docking wall is inwardly recessed to form a storage cavity. The storage cavity is provided with an internal circuit board, a docking terminal installed on one end of the internal circuit board and close to the docking wall, and an installation The other end of the internal circuit board is close to the electronic component on the bottom wall, and the butt joint terminal has an overhang extending toward the electronic component. 2. The electrical connector according to claim 1, wherein the receiving cavity has a lowest surface close to the bottom wall, and the projection of the lowest surface falls within the range of the bottom surface. 3. The electrical connector according to claim 1, wherein the distance between the protruding surface of the terminal and the supporting surface is greater than 0.4 mm. 4. The electrical connector according to claim 1, wherein the insulating body comprises a first insulating body and a second insulating body matched with the first insulating body, and the bottom wall includes a second insulating body located on the second insulating body. The second bottom wall on the body, the electrical connector includes a terminal module installed on the second insulating body, the terminal module has a second installation terminal extending beyond the second bottom wall, and the supporting legs include a terminal module located on the second bottom wall. Second supporting feet around the terminals are installed, and the second supporting feet are roughly L-shaped. 5. The electrical connector according to claim 4, wherein the bottom wall includes a first bottom wall located on the first insulating body, and the supporting foot further includes a first bottom wall protruding from the first bottom wall. A supporting leg, the two sides of the first supporting leg are provided with through holes passing through the first bottom wall and communicating with the receiving cavity. 6. The electrical connector according to claim 5, wherein the supporting surface comprises a first supporting surface located on the first supporting foot, and a second supporting surface located on the second supporting foot, the first supporting surface The height of the first supporting foot is the same as that of the second supporting foot, and the first supporting surface and the second supporting surface are located on the same horizontal plane. 7. The electrical connector according to claim 5, wherein the terminal protruding surface includes a first terminal protruding surface located on the first insulating body and a second terminal protruding surface located on the second insulating body, the first terminal protruding surface The protruding surface of the first terminal and the protruding surface of the second terminal are located on the same horizontal plane. 8. The electrical connector according to claim 7, wherein the bottom surface is located between the first terminal protruding surface and the second terminal protruding surface, and is higher than the first terminal protruding surface and the second terminal protruding surface. 9. The electrical connector according to claim 1, characterized in that: said bottom surface protrudes from an external circuit board with mounting feet. 10. The electrical connector according to claim 5, wherein the insulating body is provided with a front wall located on the front side of the receiving cavity, the receiving cavity runs through the front wall to form a slot, and the two sides of the slot are provided with The block corresponding to the through hole.