TWI483492B - Electrical connector - Google Patents

Description

Electrical connector

The present invention relates to an electrical connector, and more particularly to a bottom wall structure in an electrical connector that prevents the mounting terminal from being tinned.

Currently used RJ45 electrical connectors typically include an insulative body having a bottom wall, mounting terminals extending beyond the bottom wall for mounting to an external circuit board, and support legs for supporting to an external circuit board. The mounting terminals of the RJ45 electrical connector are closely spaced from each other. If the RJ45 electrical connector is mounted to an external circuit board for soldering, the solder between the mounting terminals is easily caused by the small distance between the supporting legs and the bottom wall. Therefore, it is necessary to design an electrical connector that prevents the occurrence of tinning.

The technical problem to be solved by this creation is to provide an electrical connector that prevents the terminal from being soldered.

In order to solve the above problems, the present invention provides an electrical connector for mounting on an external circuit board, the electrical connector including an insulative housing having a bottom wall, a mounting terminal extending from the insulating body beyond the bottom wall, the bottom wall a terminal extending surface of the terminal extending beyond the bottom wall, wherein the terminal protrudes outwardly from the circuit board and has a supporting leg, the supporting leg is provided with a supporting surface abutting the external circuit board, and the insulating body is further provided with The bottom surface of the terminal projecting surface is stepped, and the mounting terminal extends beyond the bottom wall. The bottom surface is higher than the terminal extending surface, 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 by the protruding surface of the terminal lower than the bottom surface, thereby effectively preventing the phenomenon of connecting tin.

1‧‧‧First Insulation Body

10‧‧‧Docking wall

100‧‧‧Electrical connector

11‧‧‧ containment chamber

111‧‧‧lowest

12‧‧‧ top wall

121‧‧‧ slotting

122‧‧‧ card block

123‧‧‧Bumps

13‧‧‧ side wall

131‧‧‧ Groove

14‧‧‧First bottom wall

141‧‧‧first terminal extension surface

142‧‧‧First support foot

1421‧‧‧First support surface

143‧‧‧ bottom

144‧‧‧Positioning column

145‧‧‧through hole

15‧‧‧ Containing trough

2‧‧‧Second insulation body

21‧‧‧ second bottom wall

22‧‧‧second terminal extension surface

23‧‧‧Second terminal slot

24‧‧‧second support foot

241‧‧‧second support surface

242‧‧‧ gap

4‧‧‧Shaded housing

41‧‧‧ openings

5‧‧‧Lighting device

51‧‧‧First mounting terminal

6‧‧‧Terminal module

61‧‧‧Second mounting terminal

611‧‧‧first row of terminals

612‧‧‧second row of terminals

62‧‧‧Internal circuit board

63‧‧‧Docking terminal

64‧‧‧Electronic components

The first figure is a perspective assembled view of an embodiment of the present electrical connector.

The second figure is another perspective view of the electrical connector shown in the first figure.

The third figure is a partially exploded view of the electrical connector shown in the first figure.

The fourth figure is a partially exploded perspective view of the electrical connector shown in the first figure.

Figure 5 is a perspective view of the insulative housing of the electrical connector shown in Figure 1.

Figure 6 is a cross-sectional view of the electrical connection electrical connector shown in the first figure taken along line VI-VI.

Please refer to the first to second figures together for the electrical connector 100 according to the present invention for mounting on an external circuit board (not shown), the electrical connector 100 comprising an insulating body 1 provided with a bottom wall 2, the mounting terminals 51, 61 extending from the insulating body 1, 2 beyond the bottom wall, the shielding housing 4 covering the insulating bodies 1, 2, and the light-emitting device 5 for indicating the working state of the electrical connector 100.

Referring to the second to fourth figures, the insulative housing 1 , 2 includes a first insulative housing 1 and a second insulative housing 2 that mates with the first insulative housing 1 . The first insulative housing 1 is provided with a docking wall 10 and a receiving cavity 11 recessed inwardly from the mating wall 10, a top wall 12 on the top side of the receiving cavity 11, a side wall 13 on both sides of the receiving cavity 11, and a connecting top wall. 12 is a first bottom wall 14 opposite the side wall 13 and opposite to an external circuit board (not shown). The first bottom wall 14 and the docking wall 10 are located at opposite ends of the first insulative housing 1 . The receiving cavity 11 is formed with a slot 121 extending upwardly through the top wall 12. The latching plate 121 is provided with a latching block 122 on both sides of the slot 121. The mating connector (not shown) can be engaged with the latching block 122 to prevent accidental removal. The fall caused the signal to be interrupted. The first insulative housing 1 is provided with a receiving slot 15 for receiving the light-emitting device 5 at the next block 122. The top wall 12 is further convexly provided with a projection 123, and the side wall 13 is provided with a groove 131 extending in the vertical direction on the inner side. 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 a first terminal projecting surface 141 extending beyond the first bottom wall 14 by the first mounting terminal 51. The first terminal projecting surface 141 is downwardly and protruded toward an external circuit board (not shown). A first support leg 142 having a rectangular parallelepiped shape, the first support leg 142 is provided with a first support surface 1421 that interfaces with an external circuit board (not shown). The first support surface 1421 is a distal end surface of the support leg 142 that protrudes downward. The first bottom wall 14 is further provided with a bottom surface 143 which is stepped with the first terminal extending surface 141. The bottom surface 143 protrudes from the external circuit board (not shown) with a positioning post 144 for better electrical connectors. The 100 is mounted on an external circuit board (not shown). The receiving cavity 11 has a lowest surface 111 near 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 the fifth figure). The first mounting terminal 51 extends beyond the first bottom wall 14 , and the bottom surface 143 is higher than the first terminal extending surface 141 , and the first supporting surface 1421 is higher than the first bottom surface 143 . The first terminal extending surface 141 is greater than 0.4 mm from the first supporting surface 1421 for preventing the tin connection of the first mounting terminal 51. In addition, a through hole 145 is formed on both sides of the first support leg 142 and communicates with the receiving cavity 11 , and the through hole 145 corresponds to the block 122 .

The second insulative housing 2 has a second bottom wall 21 facing the outer circuit board. The second bottom wall 21 has a second terminal extending surface 22, a second terminal slot 23, and an outer terminal board 22 from the second terminal. Two second support legs 24 are protruded. The second support leg 24 is provided with a second support surface 241 that is opposite to the external circuit board. The second terminal slot 23 is located between the two second support legs 24. The electrical connector 100 includes a terminal module 6 mounted on the second insulative housing 2, the terminal module 6 having a second mounting terminal 61, The internal circuit board 62, the docking terminal 63, and a plurality of other electronic components 64. The second mounting terminal 61 extends from the second terminal slot 23 beyond the second terminal projecting surface 22. The second support leg 24 is located around the second mounting terminal 61, and the second support leg 24 is substantially "L" shaped. The second mounting 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 staggered. 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. By means of the second supporting leg 24, the bearing area of the second supporting leg 24 is increased as much as possible after the mounting terminal is sufficiently prevented from the welding space.

Referring to the sixth figure, 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 horizontal plane as the first terminal extending surface 141. The bottom surface 143 is located between the first terminal projecting surface 141 and the second terminal projecting surface 22 and is higher than the first terminal projecting surface 141 and the second terminal projecting surface 22 .

The first and second terminal projecting surfaces 141, 22 of the first and second insulative housings 1, 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. A relative increase of the first and second support legs 142, 24 with respect to the first and second terminal projecting surfaces 141, 22 is achieved, which increases the distance between the external circuit board and the terminal extension surface, and prevents the connection of the terminal to the tin. Bad possibility. In addition, the bottom surface 143 corresponding to the lowermost surface 111 of the receiving cavity is kept constant, and the problem that the first bottom wall 14 is too thin and easy to penetrate is prevented.

1‧‧‧First Insulation Body

100‧‧‧Electrical connector

14‧‧‧First bottom wall

142‧‧‧First support foot

145‧‧‧through hole

2‧‧‧Second insulation body

21‧‧‧ second bottom wall

23‧‧‧Second terminal slot

24‧‧‧second support foot

51‧‧‧First mounting terminal

61‧‧‧Second mounting terminal

Claims (10)

An electrical connector includes: an insulating body, the edge body is provided with a bottom wall, and the insulating body further has abutting wall opposite to the bottom wall, the butting wall is recessed inward to form a receiving cavity; and the mounting terminal is provided with the terminal The insulating body extends beyond the bottom wall; the terminal extending surface, the terminal extending surface is a surface of the bottom wall that is extended beyond the mounting terminal; the bottom surface is stepped with the terminal extending surface; the supporting leg extends from the terminal a support surface facing the lower end surface of the support leg; wherein the mounting surface extends beyond the bottom wall, the support surface is higher than the bottom surface, and the bottom surface is higher than the terminal extension surface The receiving cavity is provided with an internal circuit board, a mating terminal mounted on one end of the internal circuit board and adjacent to the docking wall, and an electronic component mounted on the other end of the internal circuit board and adjacent to the bottom wall, the docking terminal having an extension to the electronic component Overhang. The electrical connector of claim 1, wherein the receiving cavity has a lowest surface adjacent to the bottom wall, and the projection of the lowest surface falls within the bottom surface. The electrical connector of claim 1, wherein the terminal projecting surface is at a distance greater than 0.4 mm from the support surface. The electrical connector of claim 1, wherein the insulative housing comprises a first insulative housing and a second insulative housing mating with the first insulative housing, the bottom wall comprising the second insulative housing a second bottom wall, the electrical connector comprising a terminal module mounted on the second insulative housing, the terminal module having a second mounting terminal extending beyond the second bottom wall, the support leg comprising the second mounting a second support leg around the terminal, the second support leg being substantially L-shaped. The electrical connector of claim 4, wherein the bottom wall comprises a first bottom wall on the first insulative housing, the support leg further comprising a first support protruding from the first bottom wall The foot has a through hole extending through the first bottom wall and communicating with the receiving cavity on both sides of the first supporting leg. The electrical connector of claim 5, wherein the support surface comprises a first support surface on the first support leg and a second support surface on the second support leg, the first support The foot is at the same height as the second support leg, and the first support surface and the second support surface are at the same level. The electrical connector of claim 5, wherein the terminal projecting surface comprises a first terminal projecting surface of the first insulative housing and a second terminal projecting surface of the second insulative housing, the first terminal The projecting surface is at the same level as the second terminal projecting surface. The electrical connector of claim 7, wherein the bottom surface is located between the first terminal projecting surface and the second terminal projecting surface, and is higher than the first terminal projecting surface and the second terminal projecting surface. The electrical connector of claim 1, wherein the bottom surface is further convexly provided with a mounting foot. The electrical connector of claim 2, wherein the insulative housing is provided with a front wall on a front side of the receiving cavity, the receiving cavity forms a slot through the front wall, and the two sides of the slot are provided corresponding to the through hole Card block.