TWI593186B - Power connector and method of making the same - Google Patents

Description

Power connector and preparation method thereof

The invention relates to a power connector and a preparation method thereof, in particular to a power connector mounted on a circuit board and a preparation method thereof.

Increasing the functionality of the product in the same product size and size is a challenge for the server to be light, thin, short, small and energy efficient. The power connector wants to increase the withstand current under the premise of the same size. In addition to considering the energy-saving heat dissipation of the electrical performance, it is also necessary to consider the insertion force and the positive force in terms of mechanical properties.

The thickness of the terminal conductor of the existing power connector can only withstand a certain current withstand. In order to improve the current resistance, the thickness of the terminal conductor must be thickened, but the thickening of the terminal conductor is bound to increase the insertion force and the positive force. The pulling force and the positive force are reduced, and the terminal conductor arm must be lengthened. However, the extension of the rear arm conductor and the plastic insulator can not be used in the traditional "barb" design, and the terminal conductor and the plastic insulator are required to be held by different processes.

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

The object of the present invention is to provide a power connector, which can be After increasing the thickness of the power terminal and lengthening the contact arm of the power terminal, the power terminal is firmly held on the insulative body using a conventional "barb" design.

To achieve the above object, the present invention provides a power connector. The power connector includes: an insulative housing, an abutting portion, a mounting portion extending rearward from the mating portion, and a receiving slot extending through the mating portion and the mounting portion; the plurality of power terminal pairs are received in the receiving slot, and the power terminal pair includes The two power supply terminals are respectively disposed with a holding portion held in the receiving groove, a contact portion extending from one end of the holding portion, and a welding portion extending from the other end of the holding portion; the power connector further includes an injection portion An insulating seat formed on the pair of power terminals and a plastic member formed on the insulating seat and the insulating body, wherein the insulating seat is provided with a flow channel hole, and the plastic member fills the flow channel hole to fixedly connect the power terminal pair With insulating body.

As a further improvement of the present invention, the top wall of the mounting portion is recessed with a reserved slot, and the side of the mounting portion is provided with a reserved passage, and the plastic member fills the reserved slot and the reserved passage.

As a further improvement of the present invention, the top wall of the mounting portion is provided with ribs for separating the reserved slots into one-to-one correspondence with the receiving slots, and the rear end of the top wall of the mounting portion is further provided for holding the insulation The card slot of the seat.

As a further improvement of the present invention, the mounting portion includes a step portion formed to protrude outward from a top wall of the mating portion and a plurality of openings disposed through the step portion in a butting direction of the power terminal, wherein the reserved groove is located behind the step portion On the side, the opening is in communication with the receiving slot.

As a further improvement of the present invention, the two power supply terminals of the power supply terminal are arranged in the upper and lower rows, and the holding portions of the upper and lower power terminals are provided with through holes, and the insulating seat is formed and formed on the upper power supply. a limiting post is formed in the through hole of the terminal and adjacent to one side of the lower power supply terminal, and the limiting post passes through and is received in the through hole of the lower power supply terminal, and the flow channel hole penetrates the limiting column in the up and down direction Settings.

In order to achieve the above object, the present invention further provides a method for manufacturing the power connector, comprising: providing an insulative housing, the insulative housing having an abutting portion, a mounting portion extending rearward from the mating portion, and a receiving slot extending through the mating portion and the mounting portion Providing a plurality of power terminal pairs, wherein the power terminal pair is received in the receiving slot and includes two power supply terminals disposed opposite to each other, each of the power terminals is provided with a holding portion held in the receiving groove and a contact extending from one end of the holding portion And a soldering portion extending from the other end of the holding portion; providing an insulating seat, the insulating seat is first injection molded with the power terminal and assembled with the insulating body; and a plastic member is provided, and the insulating seat and the insulating body are assembled Then, the plastic component is injection molded with the insulating seat and the insulating body, and the insulating seat is provided with a flow channel hole, and the plastic component fills the flow channel hole to fixedly connect the power terminal pair and the insulating body.

As a further improvement of the present invention, the top wall of the mounting portion is recessed with a reserved slot, and the side of the mounting portion is provided with a reserved passage, and the plastic member fills the reserved slot and the reserved passage.

As a further improvement of the present invention, the two power supply terminals of the power supply terminal are disposed in the upper and lower rows, and the through holes are provided on the holding portions of the upper and lower power terminals. The step of injecting and forming the edge seat and the power terminal is specifically: inserting a limit column adjacent to the through hole of the upper power supply terminal and forming a limit column on a side close to the lower power supply terminal, and then passing the limit column through the lower limit column The through hole of the power supply terminal; the flow channel hole is disposed through the limiting column in the vertical direction.

Compared with the prior art, the power connector of the present invention is formed by inserting an insulating seat on the pair of power terminals, and simultaneously molding a plastic member on the insulating seat and the insulating body, thereby increasing the thickness of the power terminal and lengthening the power terminal. After the contact arm is used, the power terminal is firmly held on the insulative body using a conventional "barb" design.

100, 100’‧‧‧ power connectors

10, 10'‧‧‧Insulated body

11‧‧‧Docking Department

111‧‧‧ docking surface

112‧‧‧ docking slot

113‧‧‧U-shaped opening

114‧‧‧ rib

12, 12’‧‧‧ Installation Department

121‧‧‧Installation surface

122‧‧‧Bump

123, 123’‧‧‧ reserved slots

124‧‧‧ Reserved channel

1241‧‧‧First Passage

1242, 1242'‧‧‧ second channel

1243‧‧‧First venting hole

1244‧‧‧Second venting hole

125, 125’ ‧ ‧ ribs

126‧‧‧ slotting

127‧‧‧Steps

128‧‧‧ openings

129‧‧‧ containment chamber

1291‧‧‧ Groove

13‧‧‧storage trough

131‧‧‧First storage trough

132‧‧‧Second holding trough

133‧‧‧ lap block

14‧‧‧ card slot

15‧‧‧Connecting block

151‧‧‧ slot

16‧‧‧ partition wall

20‧‧‧Power terminal pair

21‧‧‧Power terminal

211‧‧‧Contacts

2111‧‧‧First contact arm

2112‧‧‧second contact arm

2113‧‧‧ gap

212‧‧‧Retention Department

213‧‧‧Weld Department

214‧‧‧through hole

215‧‧‧ barbed

30‧‧‧Signal terminal pair

31‧‧‧ Signal Terminal

311‧‧‧Interface

3111‧‧‧ lap joint

312‧‧‧ Insertion Department

3121‧‧‧ barbed

3122‧‧‧diffuse

313‧‧‧ pin

40‧‧‧Limited blocks

41‧‧‧through slot

42‧‧‧Bumps

50‧‧‧Insulation seat

51‧‧‧Part 1

511‧‧‧ notch

52‧‧‧Limited Column

53‧‧‧Rail hole

60, 60'‧‧‧ plastic parts

The first figure is a perspective view of a first embodiment of the power connector of the present invention.

The second figure is an exploded perspective view of the power connector shown in the first figure.

The third figure is a perspective view of the insulative body shown in the second figure.

The fourth figure is another perspective view of the insulating body shown in the third figure.

The fifth figure is a partial enlarged view of the circled portion in the fourth figure.

Figure 6 is a perspective view of a pair of power terminal pairs shown in the second figure.

The seventh figure is an exploded view of the power terminal pair shown in the sixth figure.

The eighth figure is a schematic view of the insulating seat shown in the seventh figure, which is formed on the pair of power terminals.

The ninth figure is a perspective view of the assembly of the signal terminal pair and the limit block shown in the second figure.

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

The eleventh figure is a perspective view of the insulative body in the tenth figure.

Please refer to FIG. 1 to FIG. 9 , which are the first embodiment of the power connector 100 of the present invention. An embodiment. The power connector 100 is used for soldering to a circuit board and mating with the docking device. The power connector 100 includes an insulative housing 10, a plurality of power terminal pairs 20 and a plurality of signal terminal pairs 30 received in the insulative housing 10, and a limiting block 40 for limiting and fixing the signal terminal pair 30, and is injection molded on the power supply. The insulating seat 50 on the terminal pair 20 and the plastic member 60 formed on the insulating seat 50 and the insulating body 10.

Referring to the third to fifth figures, and in conjunction with the second figure, the insulative housing 10 has a mating portion 11 , a mounting portion 12 extending rearward from the mating portion 11 , and a receiving slot 13 extending through the mating portion 11 and the mounting portion 12 . . The abutting surface 111 is formed at the front end of the butting portion 11, and the mounting surface 121 is formed at the rear end of the mounting portion 12 so as to face the mating surface 111. The receiving groove 13 penetrates from the mating surface 111 to the mounting surface 121. The receiving slot 13 includes a first receiving slot 131 for receiving the power terminal pair 20 and a second receiving slot 132 for receiving the signal terminal pair 30. Since the shape of the power terminal pair 20 and the signal terminal pair 30 are different, The shapes of the first receiving slot 131 and the second receiving slot 132 are also different, and will not be described in detail herein.

A mating slot 112 for inserting the docking device is disposed in the front end of the mating portion 11. The mating slot 112 communicates with the receiving slot 13 so that the power terminal pair 20 and the signal terminal pair 30 are electrically connected to the docking device. A partition wall 16 is disposed between the two adjacent first receiving slots 131. The mating groove 112 is partially formed on the partition wall 16 such that the partition wall 16 has a U-shaped opening. The two inner side walls of the second receiving groove 132 are recessed with a card slot 14 , and the mounting portion 12 is provided with a connecting block 15 connected to the abutting portion 11 , and the two sides of the connecting block 15 are respectively recessed with slots 151. The two sides of the mounting portion 12 are provided with protrusions 122 protruding downward, and the protrusions 122 are used for soldering to the circuit board.

The front end of the abutting portion 11 (on the side close to the mating surface 111) is concavely provided with a U-shaped opening The ribs 114 are formed on the upper and lower inner side walls of the first receiving groove 131, and the ribs 114 are formed between the adjacent two U-shaped openings 113.

The top wall of the mounting portion 12 is recessed with a reserved slot 123. The side of the mounting portion 12 defines a reserved passage 124, and the reserved slot 123 communicates with the reserved passage 124. The top wall of the mounting portion 12 is provided with a plurality of ribs 125. The ribs 125 separate the reserved slots 123 into a one-to-one correspondence with the first receiving slots 131. In this embodiment, the length of the ribs 125 in the mating direction is the same as the foregoing. The length of the mounting portion 12 in the mating direction is equal. The rear end of the top wall of the mounting portion 12 is further provided with a slot 126 for holding the insulating seat 50.

The mounting portion 12 includes a step portion 127 that protrudes outward from the top wall of the mating portion 11, and the reserved groove 123 is opened on the rear side of the step portion 127. The step portion 127 is provided with a plurality of openings 128 extending through the step portion 127 in the mating direction of the power terminal pair 20, and the opening 128 is formed at a junction between the abutting portion 11 and the step portion 127, and the opening 128 and the first portion are The receiving slots 131 are connected to each other, so that the heat generated by the power terminal pair 20 in the first receiving slot 131 can be dissipated through the opening 128.

The first channel 1241 disposed on one side of the mounting portion 12 and the second channel 1242 disposed at the first receiving slot 131 and the second receiving slot 132 are connected to the first channel 1241. The first venting hole 1243 is formed on the abutting surface 111 and the first venting hole 1243 is formed on the abutting surface 111. The second venting hole 1244 is formed on the step portion 127. The second channel 1242 is recessed from the top surface of the step portion 127 to the docking surface. The upper surface of the portion 11 is in communication with the reserved groove 123.

Referring to FIG. 6 to FIG. 8 and the third to fifth figures, the power terminal pair 20 includes two power supply terminals 21 disposed opposite each other, and each of the power terminals 21 is fixed to the first receiving slot. a holding portion 212 in the 131, a contact portion 211 extending from one end of the holding portion 212, and The welded portion 213 extends at the other end of the holding portion 212. The contact portion 211 includes a first contact arm 2111 and a second contact arm 2112 which are spaced apart from each other and a gap 2113 formed between the first contact arm 2111 and the second contact arm 2112. The gap 2113 is disposed corresponding to the foregoing rib 114 to separate the first contact arm 2111 from the second contact arm 2112 when the contact portion 211 is docked with the docking device, preventing the first contact arm 2111 and the second contact arm from being separated. 2112 interfere with each other while providing a space in which the first contact arm 2111 and the second contact arm 2112 are elastically deformed. In addition, the gap 2113 can also be used as a reserved stamping process edge or as a heat dissipation port, and has multiple functions.

The two power supply terminals 21 of the power supply terminal pair 20 are disposed in the upper and lower rows, and the contact portions 211 of the upper and lower power supply terminals 21 are oppositely disposed, and the front end of the contact portion 211 is exposed to the U-shaped opening 113; The soldering portions 213 of the lower two rows of power terminals 21 are disposed in two columns in front and rear for soldering and fixing to the circuit board. The through holes 214 are defined in the holding portions 212 of the upper and lower rows of the power terminals 21, and the through holes 214 in the upper row of power terminals 21 are arranged in a square shape, and the through holes 214 in the lower row of power terminals 21 are arched; Of course, the shape of the through hole 214 on the upper and lower rows of power terminals 21 can also be set according to actual needs, which is not limited herein. The barbs 215 are respectively disposed on the two sides of the holding portions 212 of the upper and lower rows of the power terminals 21, and the barbs 215 are received in the corresponding slots 151 to prevent the power terminals 21 from being in the first receiving slots 131. Feel free to move.

The insulating seat 50 is injection molded on the holding portion 212 and is housed in the slot 126. The insulating base 50 includes a first portion 51 that is formed in the through hole 214 of the upper power supply terminal 21 and a limiting post 52 that is formed on a side close to the lower power supply terminal 21. The top portion of the first portion 51 is recessed in a cross shape. The notch 511 is for enhancing the grip force with the plastic member 60 when the plastic member 60 is injection molded. The shape and size of the limiting post 52 are substantially the same as the shape and size of the through hole 214 of the lower row power terminal 21, and the lower row power terminal 21 and the insulating seat 50 are The assembly is fixed, and the limiting post 52 is received in the through hole 214 of the lower power terminal 21 . A flow passage hole 53 is defined in the insulating seat 50, and the flow passage hole 53 is provided through the first portion 51 and the limiting post 52 in the vertical direction.

The plastic member 60 fills the reserved groove 123 and the reserved passage 124, and after the surface is buried, the upper surface of the plastic member 60 is in the same plane as the upper surface of the mounting portion 12; the plastic member 60 is also filled with the foregoing The flow hole 53 and the recess 511 and the through hole 214 of the lower power supply terminal 21 enable the upper and lower power supply terminals 21 to be fixed on the insulative housing 10 via a buried incident process, and then reach the fixed connection power terminal pair 20 and The purpose of insulating the body 10.

Referring to FIG. 9 and the second to fifth figures, the signal terminal pair 30 includes two signal terminals 31 disposed opposite each other. Each of the signal terminals 31 includes an insertion portion 312 extending from one end of the insertion portion 312. The plug portion 311 and the lead 313 extending from the other end of the insertion portion 312. The insertion portion 311 is received in the second receiving groove 132 and partially protrudes into the mating groove 112 to be electrically connected to the docking device. A lap portion 3111 is disposed at the front end of the plug portion 311, and the lap joint 133 is matched with the lap portion 3111. The lap portion 3111 is overlapped on the lap block 133. In order to prevent the signal terminal 31 from being thinned and easily deformed or even damaged when docked with the docking device.

The barbs 3121 and the protrusions 3122 are respectively disposed on the two sides of the insertion portion 312, and the barbs 3121 are disposed on the side of the insertion portion 312 adjacent to the insertion portion 311, and the protrusions 3122 are disposed on the insertion portion 312. Close to the side of pin 313. The protruding portion 3122 is correspondingly received in the slot 151, and the barb 3121 is interference-fitted with the card slot 14. Therefore, the signal terminal pair 30 can be stably received in the second receiving slot 132, and When the docking device is docked, the signal terminal pair 30 is prevented from moving to improve the docking stability.

The pins 313 are received and fixed in the limiting block 40, and the pins 313 are integrally divided into four rows, and the adjacent two rows of pins 313 are spaced apart from each other, thereby enhancing the grip force when soldering with the circuit board.

The limiting block 40 is disposed in a stepped manner, and the limiting block 40 is provided with a through slot 41 for inserting and receiving the pin 313. The two blocks are protruded from the limiting block 40. The mounting portion 12 is provided with a receiving cavity 129 for receiving the limiting block 40. The two inner side walls of the receiving cavity 129 are recessed with a recess 1291. The protruding block 42 is received in the recess 1291. The limiting block 40 and the insulative housing 10 are constrained by the cooperation of the bump 42 and the recess 1291.

When the power connector 100 of the present invention is assembled, the molded insulating seat 50 is first injected into the through hole 214 of the upper power supply terminal 21, and the lower power supply terminal 21 and the insulating base 50 are assembled, so that the bottom end of the insulating base 50 is limited. The position post 52 is received in the through hole 214 of the lower power supply terminal 21; after the power supply terminal pair 20 is completely assembled, the power terminal pair 20 is mounted from the mounting surface 121 to the first receiving slot 131 of the insulative housing 10, and The signal terminal pair 30 is mounted in the second receiving slot 132 from the mounting surface 121, and the limiting block 40 is mounted in the receiving cavity 129. Finally, the molded plastic part 60 is secondarily injected on the insulating base 50 and the insulating body 10, so that the plastic part is made. 60 fills the reserved slot 123, the reserved channel 124, the runner hole 53, the recess 511, and the through hole 214 on the lower power terminal 21, and then the power terminal pair 20 is fixed on the insulative housing 10 via a buried incident process. .

The specific preparation steps are as follows: providing an insulative housing 10; providing a plurality of power supply terminal pairs 20 and a signal terminal pair 30, wherein the power terminal pair 20 and the signal terminal pair 30 are correspondingly received in the insulative housing 10; and a limiting block 40 is provided. Assembly of the foregoing limiting block 40 to the insulating body 10 The portion 12 is configured to receive the pin 313 of the signal terminal pair 30; and provide an insulating seat 50 which is first injection molded with the power terminal pair 20 and assembled with the insulating body 10; specifically, the insulating seat The step of injecting 50 with the power terminal pair 20 is: firstly embedded in the through hole 214 of the upper power supply terminal 21 and formed on the side of the lower power supply terminal 21 to form a limit column 52, and then the limit column 52 passes through the through hole 214 of the lower power terminal 21; a plastic member 60 is provided. After the insulating seat 50 and the insulating body 10 are assembled, the plastic member 60 is injection molded with the insulating seat 50 and the insulating body 10.

Referring to the tenth and eleventh figures, a second embodiment of the power connector 100' of the present invention is shown. In the present embodiment, the structure of the power connector 100' is substantially the same as that of the power connector 100 described above, and the main difference is that the structure of the insulative housing 10' is slightly different. The following content will be mainly explained in detail for the difference structure, and other similar structures will not be described again.

In the present embodiment, the top wall of the mounting portion 12' of the insulative housing 10' is provided with a plurality of ribs 125'. The length of the ribs 125' in the mating direction is smaller than the length of the mounting portion 12' in the mating direction, so that the ribs are located. The reserved grooves 123' on both sides of the 125' are connected to each other, and then, when the molded plastic part 60' is injected, the plastic can be circulated with fewer injection points. In addition, in the present embodiment, the second passage 1242' of the reserved passage 124 is opened in the step portion 127 and communicates with the reserved groove 123'.

In summary, the power connector 100, 100' of the present invention is formed with the insulating seat 50 formed on the power terminal pair 20, and the plastic parts 60, 60 are formed on the insulating base 50 and the insulating body 10, 10'. Therefore, after the thickness of the power terminal 21 is increased and the contact arm of the power terminal 21 is lengthened, the power terminal 21 is firmly held on the insulative housing 10, 10' using a conventional "barb" design.

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

100‧‧‧Power connector

10‧‧‧Insulated body

11‧‧‧Docking Department

111‧‧‧ docking surface

112‧‧‧ docking slot

113‧‧‧U-shaped opening

114‧‧‧ rib

12‧‧‧Installation Department

125‧‧‧ Ribs

127‧‧‧Steps

16‧‧‧ partition wall

20‧‧‧Power terminal pair

50‧‧‧Insulation seat

60‧‧‧Plastic parts

Claims (8)

A power connector includes: an insulative housing having a mating portion, a mounting portion extending rearward from the mating portion, and a receiving slot extending through the mating portion and the mounting portion; a plurality of power terminal pairs are received in the receiving slot, and the power terminal pair The device includes two opposite power terminals, each of which has a holding portion held in the receiving groove, a contact portion extending from one end of the holding portion, and a welding portion extending from the other end of the holding portion; wherein the power connector is The utility model further comprises an insulating seat formed on the pair of the power terminal and a plastic piece formed on the insulating seat and the insulating body, wherein the insulating seat is provided with a flow channel hole, and the plastic piece fills the flow hole to fix the foregoing Power terminal pair and insulating body. The power connector of claim 1, wherein the top wall of the mounting portion is recessed with a reserved slot, and a side of the mounting portion is provided with a reserved passage, and the plastic member fills the reserved slot and Reserve channels. The power connector of claim 2, wherein the top wall of the mounting portion is provided with ribs to separate the reserved slots into one-to-one correspondence with the receiving slots, and the top end of the mounting portion is further A card slot for holding the insulating seat is provided. The power connector of claim 2, wherein the mounting portion includes a step portion formed to protrude outward from a top wall of the mating portion and a plurality of openings disposed through the step portion in a butting direction of the power terminal, the foregoing The reserved groove is located at a rear side of the step portion, and the opening communicates with the receiving groove. The power connector of claim 1, wherein the power supply terminal has two pieces of electricity The source terminal is disposed in the upper and lower rows, and the through holes are formed on the holding portions of the upper and lower power terminals, and the insulating seat is formed in the through hole of the upper power terminal and is adjacent to one of the lower power terminals. The limiting pillar is formed on the side, and the limiting pillar passes through and is received in the through hole of the lower row power terminal, and the runner hole is disposed through the limiting pillar in the up and down direction. A method for manufacturing a power connector includes: providing an insulative housing, the insulative housing having an abutting portion, a mounting portion extending rearward from the mating portion, and a receiving slot extending through the mating portion and the mounting portion; providing a plurality of power terminal pairs, the power terminal Each of the power terminals is provided with a holding portion held in the receiving groove, a contact portion extending from one end of the holding portion, and a welding extending from the other end of the holding portion. Providing an insulating seat, the insulating seat is first injection molded with the power terminal, and then assembled with the insulating body; a plastic piece is provided, and after the insulating seat and the insulating body are assembled, the plastic piece is further insulated from the insulating seat And the insulating body is injection-molded, the insulating seat is provided with a flow channel hole, and the plastic component fills the flow channel hole to fixedly connect the power terminal pair and the insulating body. The method of manufacturing the power connector of claim 6, wherein the top wall of the mounting portion is recessed with a reserved slot, and a side of the mounting portion is provided with a reserved passage, and the plastic part is filled with the foregoing Leave slots and reserve channels. The method for manufacturing a power connector according to claim 6, wherein the two power terminals of the power terminal are arranged in upper and lower rows, and the holding portions of the upper and lower power terminals are respectively connected. The hole, the step of injecting and forming the insulating seat and the power terminal pair is specifically: inserting a limit column adjacent to a through hole of the upper power supply terminal and forming a limit column on a side close to the lower power supply terminal, and then The limiting post passes through the through hole of the lower row power terminal; the flow channel hole is disposed through the limiting post in the up and down direction.