TW201332227A - Power connector - Google Patents

Abstract

A power connector includes an insulative housing, a number of contacts retained in the insulative housing and a spacer fixed to the insulative housing. The insulative housing includes a mating surface, an end surface opposite to the mating surface and a plurality of passageways extending through the mating and the end surfaces. A depression and a cavity are recessed into the insulative housing from the mating surface and the end surface, respectively. Each contact includes a main portion received in corresponding passageway and a tail portion located in the cavity in condition that at least one side wall of the tail portion is exposed to the air for excellent heat dissipation.

Description

Power connector

The invention relates to a power connector, and more particularly to a power connector that can be mounted on a circuit board.

Designers of electronic circuits usually focus on two basic circuit parts, the logic (or signal) part and the power supply part, and when designing the logic circuit, because the current flowing in the logic circuit is low, the designer usually does not Consider any change in electrical properties (eg, impedance of circuit components) due to state changes (eg, temperature), however, high current flow will cause changes in the electrical properties of the power supply circuit, and therefore The power connector designed in the circuit must be able to dissipate heat (mainly caused by the Joule effect), so that changes in electrical properties due to current changes can be effectively minimized.

U.S. Patent No. 7,374,436 discloses a power connector component for transmitting power, the power connector component being comprised of a socket connector and a plug connector that are mated to each other and mounted on a circuit board, the socket connector including socket insulation The body and the female terminal set assembled in the socket insulation body, the plug connector comprises a plug insulation body and a male terminal set assembled in the plug insulation body. Referring to the first figure, each female terminal 414 includes a two-piece large-area flat body 418, 420 connected to the top side and extends forwardly from the front side of the body to form upper and lower two opposing arms 430, 432. When the socket connector and the plug connector are butted against each other and electrically connected, the mating arms of the male and female terminals are in elastic contact with each other, and the female terminal 414 is deformed by receiving the pressing force when the male terminal is inserted, and the female terminal 414 is deformed. The U-shaped connecting portions 422, 424 on the top side of the flat bodies 418, 420 can provide a certain reaction supporting force to help maintain the contact portion of the female terminal 414 from being deformed by excessive force. Then, the female terminal disclosed in the patent is integrally formed, and the connection portion of the terminal body portion is a U-shaped structure. The structure needs to first punch out the terminal body portion and then bend, and the bending process often causes the terminal to bend at the bend. In turn, the conductive properties of the terminal are affected to reduce the quality, and the internal stress of the terminal is released due to the high temperature caused by the soldering after the bending, which causes the external expansion of the terminal to affect the position of the soldering leg, resulting in poor soldering or connector soldering when the board is bonded. The foot is broken. In addition, the female terminal 414 adopts a U-shaped structure, which is complicated in manufacturing process and high in cost.

In the first figure, the female terminal 414 can only be inserted from the lower part of the insulative housing, and the side cover 438 is held in the insulative housing by the buckle portion on the side of the female terminal 414. After the buckle, the side of the female terminal 414 and the female terminal 414 are further required. The groove fit prevents the female terminal 414 from moving up and down, affecting the connection with the plug connector, and the holding structure is relatively complicated. As described above, the power connector needs to have a good heat dissipation function, and the portion of the female terminal 414 exposed to the air becomes small after the side cover 438 is closed, which affects the heat dissipation function of the power connector during operation.

In view of this, it is necessary to further improve the conventional power connector to solve the above problems.

It is an object of the present invention to provide a power connector that is simple to manufacture, has a good heat dissipation effect, and is stable in power transmission.

In order to achieve the above object, the present invention relates to a power connector mounted on a circuit board, comprising: an insulative housing having an abutting surface, a rear surface, a receiving passage formed in the abutting surface and extending through the insulative housing, and recessed from the mating surface a recessed portion; the plurality of conductive terminals are received in the receiving passage, the conductive terminal has a main body portion, an abutting portion extending forward from the main body portion, and a tail portion extending rearward from the main body portion, and further disposed on at least one side of the main body portion The cover body is received in the recessed portion, and the cover body has a plug surface and a bottom surface parallel to the plug surface, and the plug surface is provided with a through hole for receiving the mating portion, and the cover body is The peripheral edge further has a locking portion, and the locking portion has a protruding portion, and the protruding portion cooperates with the slit to prevent the conductive terminal from being displaced forward and backward.

As a further improvement of the present invention, the two sides of the conductive terminal further extend a resisting block, and the abutting block is located beside the slit and is used to abut the inner wall surface of the receiving passage.

According to a further improvement of the present invention, the abutting portion and the tail portion are located on both sides of the main body portion, the abutting portion is coplanar with the main body portion, and the tail portion is parallel to the main body portion.

As a further improvement of the present invention, the conductive terminals are mounted in pairs in the receiving passages, and the tail portions of each pair of conductive terminals abut each other, and the tail portion protrudes from the rear surface.

As a further improvement of the present invention, the distance between the tail portions of each pair of the conductive terminals received in the receiving passage is smaller than the distance between the body portions of each pair of the conductive terminals.

As a further improvement of the present invention, the insulative housing has a top wall and a bottom wall, and the top wall and the bottom wall extend in a direction opposite to a direction in which the power connector is abutted to form a cavity.

According to a further improvement of the present invention, the cover body has a mating surface, and the insulative housing has an abutting surface, and the mating surface and the mating surface are coplanar.

As a further improvement of the present invention, the guide body is provided on both sides of the insulating body.

As a further improvement of the present invention, a mounting hole for mounting the aforementioned power connector on the circuit board is provided at a position adjacent to the aforementioned guide post.

As a further improvement of the present invention, the aforementioned power connector further has a signal terminal.

In order to achieve the above object, the present invention further provides another power connector mounted on a circuit board, comprising: an insulative housing having a plurality of first receiving passages and a second receiving passage communicating with the first receiving passage; The terminal is composed of two terminal pieces, and the terminal piece has a main body portion accommodated in the first receiving passage, an abutting portion received in the second receiving passage, a tail portion protruding from the outside of the insulating body, and two in the main body portion. The slit of the side, wherein the height of the cross section of the first receiving passage is larger than the height of the cross section of the second receiving passage.

According to a further improvement of the present invention, the insulative housing has a first main body portion and a second main body portion mounted on the first main body portion, and the first receiving passage is disposed on the first main body portion, and the second receiving passage is It is disposed on the aforementioned second body portion.

As a further improvement of the present invention, the two sides of the main body of the terminal piece are further provided with a resisting block for resisting the inner wall surface of the first receiving passage.

According to a further improvement of the present invention, the first receiving passage is provided with a resisting portion, and the abutting portion and the abutting block cooperate with each other to prevent the conductive terminal from being over-inserted.

According to a further improvement of the present invention, the peripheral edge of the second main body portion further has a locking portion, and the locking portion has a protruding portion, and the protruding portion cooperates with the slit to restrict the terminal piece to prevent the terminal The sheet is displaced forward and backward in the first receiving passage and the second receiving passage.

As a further improvement of the present invention, the first main body portion is further provided with guide posts on both sides thereof.

As a further improvement of the present invention, the aforementioned power connector further includes a plurality of signal terminals.

Compared with the prior art, the invention has the beneficial effects that the cover body is matched with the slit of the conductive terminal through the protruding portion on the locking portion, and the conductive terminal is tightly fixed in the insulating body to prevent the conductive The terminals are displaced back and forth to ensure an effective electrical connection between the power connector and the mating connector.

Referring to Figures 2 through 4, the power connector 8 of the present invention can be paired with another power connector (not shown) for power transfer between printed circuit boards or other structures. The power connector 8 includes an insulative housing 1 made of an insulating material, a plurality of first terminals 2 and second terminals 6 received in the insulative housing 1 , and mounted on the insulative housing 1 and holding the first terminal 2 on the insulative housing. 1 in the cover 3.

The insulative housing 1 has an elongated shape and has a first body portion 17. A guide post 12 mateably coupled to another power connector (not shown) is disposed on both sides of the first body portion 17, and a position adjacent to the guide post 12 is provided to mount the power connector 8 at Mounting holes 14 in a printed circuit board (not shown). The first body portion 17 has an abutting surface 171, a rear surface 172, and a first receiving passage 10 and a second receiving and receiving passage 18 penetrating the abutting surface 171 and the rear surface 172. The first receiving passage 10 is configured to receive the first terminal 2, and the second receiving passage 18 is configured to receive the second terminal 6. A resisting portion 132 is further disposed in the first receiving passage 10 . The insulative housing 1 further has a recessed portion 173 recessed inwardly from the abutting surface 171, a cavity 15 recessed inwardly from the rear surface 172, and a fixing groove 174 recessed rearward from the recessed portion 173, both the recessed portion 173 and the cavity 15 The first receiving passage 10 is located between the recessed portion 173 and the cavity 15 in communication with the first receiving passage 10. The recessed portion 173 is for accommodating the cover body 3. The first main body portion 17 has a top wall 175 covering the cavity 15 to protect the first terminal 2, and a bottom wall 176 which does not cover the cavity 15 so that the cavity 15 is exposed. in the air.

Referring to FIG. 5 and in conjunction with the second figure, the first terminals 2 are mounted in pairs in the first receiving passage 10 in pairs. Each of the first terminals 2 has a second main body portion 20, an abutting portion 21 extending forward from the second main body portion 20 side, a bent portion 24 extending laterally from the other side of the second main body portion 20, and self-bending The portion 24 extends rearwardly of the tail portion 22. The abutting portion 21 is coplanar with the second body portion 20, and the tail portion 22 is parallel to the second body portion 20. The second main body portion 20 further has a wing portion 23 extending to the two sides. The wing portion 23 is coplanar with the second body portion 20, and the two ends are respectively provided with the holding portions 230 and 232, and between the latching portions 230 and 232 A spur 25 is also provided. When the aforementioned first terminal 2 is inserted into the first receiving passage 10, the aforementioned spurs 25 are fixed together with the first receiving passage 10 by hard interference. When the first terminals 2 are mounted in pairs in the first receiving passage 10, the tail portions 22 of the two first terminals 2 located in the same receiving passage are abutted against each other. Since there is no connection portion between each pair of first terminals 2, no crack or other damage of the connection portion occurs during power transmission.

Referring to FIG. 6 , the material used for the first terminal 2 is made of a material such as phosphor bronze alloy or beryllium copper alloy, and then the first terminal 2 is formed by stamping or other methods. After the finished first terminal 2, only the holding portion 230 is still connected to the tape, thereby forming a terminal strip. The first terminal 2 can be disconnected therefrom before or after being inserted into the insulative housing 1. Since the material structures of the first terminals 2 that are paired with each other are the same, a plurality of first terminals 2 can be produced on the same tape. In the production process, the terminal strips in which the second main body portion 20 and the tail portion 22 are alternately arranged can be punched out on the tape, which saves material. The first terminal 2 may be plated or coated with a corrosion-resistant material over the entire surface, or may be plated or coated with a corrosion-resistant material only for the tail portion 22.

Referring to the second figure, the second terminal 6 includes an insertion portion 60 that can be inserted into the second receiving passage 18 of the insulative housing 1, a pin 62 that can be inserted into the printed circuit board, and a bend that connects the insertion portion 60 and the pin 62. The folded portion 64, the stitch 62 is substantially perpendicular to the insertion portion 60. The power connector 8 has a plurality of second terminals 6 in the same row, the second terminals 6 of the same row are bent at the same position, and the positions of the second terminals 6 of the different rows are different, so that the second receiving channel 18 is accommodated in the second receiving channel 18 The two terminals 6 are arranged in a stepped manner.

Referring to FIG. 7 and in conjunction with the second and third figures, the cover 3 has a rectangular parallelepiped shape and has a main body 30 and a locking portion 34 extending laterally from the periphery of the main body 30. The main body 30 has a mating surface 301 and a bottom surface 33. The mating surface 301 is parallel to the bottom surface 33. The bottom surface 33 protrudes outwardly from the bottom surface 33. The mating surface 301 defines a through hole 31 and extends through the main body 30. To the bottom surface 33. Each of the locking portions 34 has a projection 340 to facilitate the engagement of the aforementioned fixing groove 174, so that the aforementioned cover 3 can be firmly fixed at the recess 173. When the cover body 3 is mounted at the recessed portion 173, the aforementioned insertion surface 301 is coplanar with the abutting surface 171.

As shown in FIG. 8 and FIG. 9 , the tail portion 22 of the first terminal 2 is inserted into the first receiving passage 10 of the insulative housing 1 from the front to the rear, and the latching portion 232 of the first terminal 2 is resisted. The abutting portion 132 in the first receiving passage 10 prevents the first terminal 2 from being over-inserted, and the abutting portion 21 protrudes from the recessed portion 173 and protrudes into the through hole 31, and the tail portion 22 extends into the cavity 15 inside. Since the aforementioned bottom wall 176 does not cover the aforementioned tail portion 22, most of the aforementioned tail portion 22 is exposed to the air, thereby enhancing the heat convection, thereby enhancing the heat dissipation effect. After the first terminal 2 is inserted into the first receiving passage 10, the cover 3 is mounted at the recess 173, so that the protruding portion 340 of the locking portion 34 can cooperate with the fixing groove 174, thereby making the cover body 3 can be firmly fixed at the recess 173. The bottom surface 33 of the cover 3 abuts against the latching portion 230 to prevent the first terminal 2 from falling out of the first receiving passage 10. The first terminal 2 can be firmly fixed in the first receiving passage 10 by the cooperation of the bottom surface 33, the abutting portion 132 and the engaging portions 230 and 232. The aforementioned bumps 32 are received in corresponding guiding holes (not shown) on the insulative housing 1 to guide the cover body 3 to be properly mounted on the recessed portion 173. The insertion portion 60 of the aforementioned second terminal 6 is inserted into the second receiving passage 18 of the insulative housing 1 from the rear to the front.

Tenth and eleventh views show a second embodiment of the power connector of the present invention. In the present embodiment, the basic structure of the power connector 8' is the same as that of the power connector 8 shown in the second figure, and will not be described again here.

Referring to the tenth diagram, the power connector 8' includes a cover 3' and a first terminal 2'. The first terminals 2' are mounted in pairs in the first receiving passage 10'. Referring to FIGS. 11 to 13 , the first terminal 2 ′ has a second body portion 20 ′, an abutting portion 21 ′ extending forward from the second body portion 20 ′ side, and a second body portion 20' is a laterally extending bent portion 24' and a tail portion 22' extending rearward from the bent portion 24'. The abutting portion 21' is coplanar with the second body portion 20', and the tail portion 22' is parallel to the second body portion 20'. The second main body portion 20' extends to the two sides with a resisting block 202' for resisting the inner wall surface of the first receiving passage 10' of the insulative housing 1'. The main body portion 20' is also recessed inwardly on both sides with a slit 201' for receiving the projection 310' of the locking portion 31'. The inner wall surface of the insulative housing 1' is provided with a resisting portion (not shown) for mating with the resisting block 202' to prevent over insertion of the first terminal 2' when inserted into the first receiving passage 10'.

Fig. 12 is a schematic view showing the assembly of the cover 3' and the pair of first terminals 2'. The cover 3' has a main body 30' and a locking portion 31' which is located in pairs on the side wall of the main body 30'. Each of the locking portions 31' has a projection 310'. When the first terminal 2' is inserted into the first receiving passage 10' of the power connector 8', the locking portion 31' securely holds the first terminal 2', and the protruding portion of the locking portion 31' 310' is located just inside the slit 201' on the first terminal 2'.

It is to be understood that the equivalents of the invention are intended to be included within the scope of the invention as claimed.

1, 1’. . . Insulating body

10, 10’. . . First containment channel

12. . . Guide column

14. . . Mounting holes

132. . . Responsible department

15. . . Cavity

17. . . First body

171. . . Docking surface

172. . . Behind

173. . . Depression

174. . . Fixed slot

175. . . Top wall

176. . . Bottom wall

18. . . Second containment channel

2, 2’. . . First terminal

20, 20’. . . Second body

201’. . . incision

202’. . . Resisting block

21, 21’. . . Docking

22, 22’. . . Tail

twenty three. . . Wing

230, 232. . . Holder

24, 24', 64. . . Bending section

25. . . Spur

3, 3’. . . Cover

30, 30’. . . main body

301. . . Plug surface

31. . . Through hole

310’, 340. . . Protrusion

32. . . Bump

33. . . Bottom

34, 31’. . . Locking part

6. . . Second terminal

60. . . Insertion

62. . . stitch

8, 8’. . . Power connector

The first figure is a perspective view of a conventional power connector.

The second drawing is an exploded view of the first embodiment of the power connector of the present invention;

The third figure is a perspective view of another state of the power connector shown in the second figure;

The fourth figure is a perspective view of the combination of the power connectors shown in the second figure;

Figure 5 is a perspective view of the first terminal of the power connector shown in Figure 2;

Figure 6 is a plan view of the power connector terminal strip shown in the second figure;

Figure 7 is a perspective view of the power connector cover shown in Figure 2;

The eighth figure is a schematic diagram of the installation process of the first terminal of the power connector shown in the second figure;

The ninth figure is a schematic diagram of the installation process of the power connector cover shown in the second figure.

Figure 11 is a perspective view showing a second embodiment of the power connector of the present invention.

The eleventh figure is another perspective view of the power connector shown in the tenth figure.

Figure 12 is a schematic view showing the assembly of the power connector of the power connector and the pair of first terminals shown in the tenth figure.

Figure 13 is a schematic view of the first terminal of the power connector shown in the tenth figure.

1'. . . Insulating body

10’. . . First containment channel

2'. . . First terminal

twenty one'. . . Docking

twenty two'. . . Tail

3’. . . Cover

8'. . . Power connector

Claims (17)

A power connector mounted on a circuit board, comprising:
The insulating body has an abutting surface, a rear surface, a receiving passage formed in the abutting surface and penetrating through the insulating body, and a recessed portion recessed from the abutting surface;
The plurality of conductive terminals are received in the receiving passage, the conductive terminal has a main body portion, an abutting portion extending forward from the main body portion, and a tail portion extending rearward from the main body portion, and at least one side of the main body portion is further provided with a slit; The cover body is received in the recessed portion, and the cover body has an insertion surface and a bottom surface parallel to the insertion surface, and the insertion surface has a through hole for receiving the abutting portion, and the periphery of the cover body further extends In the locking portion, the locking portion has a protruding portion, and the protruding portion cooperates with the slit to prevent the conductive terminal from being displaced back and forth. The power connector of claim 1, wherein the two sides of the conductive terminal further extend a resisting block, and the abutting block is located beside the slit and is configured to abut the inner wall surface of the receiving passage. The power connector of claim 2, wherein the abutting portion and the tail portion are located on both sides of the main body portion, the abutting portion is coplanar with the main body portion, and the tail portion is parallel to the main body portion. The power connector of claim 3, wherein the conductive terminals are mounted in pairs in the receiving passage, and the tail portions of each pair of conductive terminals abut each other, and the tail portion protrudes from the rear surface. The power connector of claim 4, wherein a distance between the tail portions of each pair of the conductive terminals received in the receiving passage is smaller than a distance between the body portions of each pair of the conductive terminals. The power connector of claim 1, wherein the insulative housing has a top wall and a bottom wall, and the top wall and the bottom wall extend in a direction opposite to a direction in which the power connector is docked to form a cavity. The power connector of claim 1, wherein the cover has a mating surface, the insulative housing has an abutting surface, and the mating surface and the mating surface are coplanar. The power connector of claim 1, wherein the insulating body is provided with guide posts on both sides thereof. The power connector of claim 8, wherein a mounting hole for mounting the power connector on the circuit board is provided at a position adjacent to the guide post. The power connector of claim 1, wherein the power connector further has a signal terminal.
A power connector mounted on a circuit board, comprising:
The insulating body has a plurality of first receiving passages and a second receiving passage communicating with the first receiving passage;
The plurality of conductive terminals are composed of two terminal pieces, and the terminal piece has a main body portion accommodated in the first receiving passage, an abutting portion received in the second receiving passage, a tail portion protruding outside the insulating body, and the main body The slits on both sides of the portion, wherein the height of the cross-sectional view of the first receiving passage is greater than the height of the cross-sectional view of the second receiving passage. The power connector of claim 11, wherein the insulative housing has a first body portion and a second body portion mounted on the first body portion, and the first receiving passage is disposed in the first body portion The second receiving passage is disposed on the second main body portion. The power connector of claim 12, wherein the front end of the body portion of the terminal piece is further provided with a resisting block for resisting the inner wall surface of the first receiving passage. The power connector of claim 13, wherein the first receiving passage is provided with a resisting portion, and the abutting portion and the abutting block cooperate to prevent the conductive terminal from being inserted. The power connector of claim 14, wherein the peripheral edge of the second body portion further has a locking portion, the locking portion has a protruding portion, and the protruding portion cooperates with the slit to restrict the foregoing The terminal piece prevents the terminal piece from being displaced forward and backward in the first receiving passage and the second receiving passage. The power connector of claim 12, wherein the first body portion is further provided with a guide post on both sides thereof. The power connector of claim 12, wherein the power connector further includes a plurality of signal terminals.