TWI734510B - Electrical connector - Google Patents

Abstract

The present invention relates to an electrical connector, which comprises an insulative housing and a plurality of power contact pairs. The insulative housing defines a mounting portion for fixing on a printed circuit board, a mating portion extending forwards from the mounting portion and a plurality of receiving slots extending along a front-and-back direction. The power contact pairs are divided into at least two rows in a height direction, and each power contact pair in each row includes two power contacts. Each power contact comprises a retaining portion remained in corresponding receiving slots, at least a pair of contacting portions extending forwards from a front end of the retaining portion and at least one soldering leg bending from a rear end of the retaining portion. One row of the power contact pairs are assembled to the insulative housing in a rear-to-front direction, and the other row of the power contact pairs are assembled to the insulative housing in an up-and-down direction.

Description

Electrical connector

The invention relates to an electrical connector, in particular to an electrical connector with a relatively low height.

In order to transmit larger currents, the conventional electrical connector increases the transmission area of the power terminal to make it a sheet structure. Each power terminal usually has one or more contact arms extending forward from the front end of the sheet body. At the same time, multi-chip power terminals arranged in the height direction are used to achieve the purpose of transmitting more current.

In addition, in order to make the electrical connection between the electrical connector and the mating element more convenient, it is necessary to reduce the height of the electrical connector. At this time, the production and assembly of conductive terminals with a large number of pieces becomes more difficult. Take the electrical connector with four power terminals arranged in the height direction as an example. According to the traditional manufacturing process, if the power terminal pair on the upper side is installed into the insulating body, the solder feet of the power terminal pair on the lower side are folded After bending, it is put into the insulating body. When the center height of the electrical connector is set to be low, the power terminal pair located in the upper row will be difficult to bend to form a downwardly extending solder foot; if the power terminal located on the upper side is folded in half first After bending to form downward welding feet and then inserting it into the insulating body, it will block the installation space of the power terminal pair located on the lower side and cause the power terminal pair on the lower side to be unable to be installed in the insulating body.

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

The purpose of the present invention is to provide an electrical connector that is convenient to manufacture, low in height, and convenient to electrically connect.

In order to achieve the above-mentioned object, the present invention provides an electrical connector, which includes an insulating body and a plurality of power terminal pairs fixed to the insulating body. The insulating body has a mounting portion for mounting on a circuit board. A front-extending butting portion and a plurality of terminal slots extending in the front-rear direction. The aforementioned power terminal pair is fixed in the corresponding terminal slot of the aforementioned insulating body and divided into two rows arranged in the height direction. Each aforementioned power terminal pair in each row includes Two power terminals, each power terminal includes a holding part held in the corresponding terminal slot, at least one pair of contact parts extending forward from the front end of the holding part, and at least one bending and extending from the rear end of the holding part For soldering feet, one row of the aforementioned power terminal pairs is inserted into the aforementioned insulating body in a back-to-front direction, and the other row of power terminal pairs is inserted into the aforementioned insulating body along the up-and-down direction.

As a further improvement of the present invention, the holding portion of each power terminal of the aforementioned power terminal pair in the upper row extends in the vertical direction, and the holding portion of each power terminal of the power terminal pair in the lower row extends in the front-rear direction.

As a further improvement of the present invention, the electrical connector further has a cover assembled and fixed to the insulating body. After the power terminal pair is installed in the insulating body, the cover is assembled to the insulating body in the vertical direction, and It is arranged adjacent to the aforementioned other row of power terminal pairs.

As a further improvement of the present invention, the terminal slots on the insulative body corresponding to the other row of power terminal pairs are opened up and down to the outside, and the cover has an inner side close to the other row of power terminal pairs and the The inner side is arranged opposite to the outer side, and the inner side of the cover body is provided with a plurality of pressing parts respectively abutting to the other row of power terminal pairs.

As a further improvement of the present invention, the cover body includes a front cover plate located on the front side, a rear cover plate located on the rear side, and an adapter plate connecting the front cover plate and the rear cover plate, and the front cover plate covers the outer side of the aforesaid butting portion, The rear cover plate covers the outer side of the mounting portion, the insulating body has a plurality of limiting protrusions, each limiting protrusion is located between two adjacent terminal slots, and the connecting plate is provided with a plurality of accommodating and positioning corresponding limits. The limit slot of the convex part.

As a further improvement of the present invention, the retaining portions of the two power terminals arranged in pairs in the other row of power terminals are parallel and spaced in the front-to-back direction to interfere with the corresponding retaining grooves in the terminal groove.

As a further improvement of the present invention, the two power terminals in each pair of power terminals are housed together in the same terminal slot, and each power terminal in the other row of power terminal pairs has a first horizontal portion that is parallel to each other And the second horizontal part, the first horizontal part and the second horizontal part are respectively connected to the top and bottom ends of the holding part.

As a further improvement of the present invention, the cover body has a plurality of heat dissipation grooves penetrating the cover body along the height direction and communicating with the terminal groove.

As a further improvement of the present invention, wherein the inner side of the cover body is further provided with at least a pair of buckle parts, and the insulating body has locking parts located on both sides in the transverse direction to cooperate with the buckle parts.

As a further improvement of the present invention, the inner side of the cover body is further provided with a plurality of protrusions protruding toward the insulating body, two adjacent aforesaid pressing parts are spaced apart in the transverse direction to form an interval groove, and the protrusions and Correspondingly, the aforementioned spacing grooves are aligned in the front-to-rear direction.

Compared with the prior art, the electrical connector of the present invention has a lower center height so as to be electrically connected to the mating element, and one row of power terminal pairs of the electrical connector is inserted into the aforementioned insulating body in a backward-to-front direction , The other row of power terminal pairs are inserted into the aforementioned insulating body along the up and down direction to avoid the trouble caused to each other when the two rows of power terminals are installed in the same direction, reduce the production difficulty and production cost of the product, and realize that the electrical connector can transmit The purpose of large current, overall height and center height are low, while solving the problem of difficult assembly of multi-row power terminals.

Please refer to the first to tenth figures for a preferred embodiment of the electrical connector 100 of the present invention. The electrical connector 100 includes an insulating body 1 and a plurality of power terminal pairs 2 fixed to the insulating body 1. For ease of description, the following description regards the butt end of the electrical connector 100 as the front end, and the other end opposite to the butt end as the back end. The butt direction, meanwhile, defines one direction perpendicular to the front and rear direction as the transverse direction, and the other direction perpendicular to the front and back direction as the height direction. In this embodiment, the dimension of the aforementioned insulating body 1 in the transverse direction is greater than its height The size in the front and rear directions.

Please refer to Figures 1 to 9, in the present invention, the aforementioned insulating body 1 has a mounting portion 11 for mounting on a circuit board (not shown), and a mating portion extending forward from the aforementioned mounting portion 11 12 and a plurality of terminal grooves 13 extending in the front-to-rear direction. A barrier 14 is provided between every two adjacent terminal grooves 13. The aforementioned partition 14 also extends in the front-rear direction.

In addition, the aforementioned insulating body 1 has two rows of terminal grooves 13 spaced apart along the height direction. The aforementioned terminal grooves 13 located in the upper row are opened to the outside in the front-to-rear direction and are also opened upwards. The terminal grooves 13 located in the lower row are only Open and set outwards along the front and back direction.

In the present invention, the mounting portion 11 has a mounting surface 110 for mounting on the circuit board. In the height direction, the mounting surface 110 is not lower than the horizontal center plane C-C' of the mating portion 12 to reduce electrical power. The overall height of the connector 100; and the electrical connector 100 has a relatively low center height so as to be electrically connected to the mating element.

Further, in this embodiment, the mounting portion 11 has a bearing portion 112 and a pair of extension portions 113 located on both sides of the bearing portion 112 in the lateral direction. In the height direction, the terminal slot 13 in the lower row is located in the bearing portion 112. Below section 112. The supporting portion 112 is generally plate-shaped and has a plurality of spacers 1121 arranged in the transverse direction. Each of the extending portions 113 extends backward and protruding from the supporting portion 112, and the mounting surface 110 is the bottom surface of the extending portion 113.

Each of the aforementioned extension portions 113 has a receiving groove 1132 recessed downwardly from its top surface, and the aforementioned supporting portion 112 has a pair of locking portions 1123 protruding outward from both sides in the transverse direction, the aforementioned locking portions 1123 It protrudes into the receiving slot 1132 on the corresponding side.

The docking portion 12 has a front end wall 121 located at its front end and extending transversely. The front end wall 121 is located on the upper side of the docking portion 12 and is connected to the partition 14 which is arranged perpendicular to the front end wall 121 and exposed to the On the upper side of the butting portion 12; in addition, each of the aforementioned partitions 14 has an upwardly protruding limiting protrusion 141, so that a plurality of the aforementioned limiting protrusions 141 are formed on the upper side of the aforementioned insulating body 1, and each of the aforementioned limiting protrusions 141 is located between two adjacent terminal slots 13.

In this embodiment, the aforementioned terminal groove 13 includes a first groove portion 131 and a second groove portion 132 that are connected to each other. The first groove portion 131 is located on the front side to accommodate the contact portion 202 of the power terminal pair 2, and the second The groove portion 132 is located on the rear side to receive and position the holding portion 201 of the aforementioned power terminal pair 2. The second groove portion 132 of the upper row of terminal grooves 13 includes two pairs of holding grooves 1321 opened on both sides in the transverse direction. The two retaining grooves 1321 are arranged at intervals along the front and back direction, and each of the aforementioned retaining grooves 1321 is in a long strip shape extending along the height direction.

Please refer to the second to eighth figures, the aforementioned power terminal pair 2 is fixed to the corresponding terminal slot 13 of the aforementioned insulating body 1 and divided into two rows arranged in the height direction, that is, the power terminal pair located in the upper row and the lower The terminal pair of the row. In this embodiment, the aforementioned power terminal pairs 2 are arranged in pairs along the height direction to form a group, and the two power source terminal pairs 2 in each group of power terminal pairs are arranged opposite and spaced along the aforementioned height direction.

Each power terminal pair 2 in each row includes two power terminals 21, each power terminal includes a holding portion 201 held in the corresponding terminal slot 13, and at least one pair formed by extending forward from the front end of the holding portion 201 The contact portion 202 and at least one solder foot 203 formed by bending and extending from the rear end of the aforementioned holding portion 201.

Each of the aforementioned contact portions 202 is curved and protrudes toward the horizontal center plane CC′ of the aforementioned mating portion 12. The contact portions 202 of the two power terminals 21 in each power terminal pair 2 are arranged in a row along the height direction, and the contact portions 202 of the two power terminals 21 are alternately arranged in the transverse direction. Of course, the contact portions 202 of the two power terminals 21 in each power terminal pair 2 can also be staggered in the height direction, as long as the two power terminals in each power terminal pair 2 can be mated with the mating element. The contact portion 202 of 21 only needs to be on the same horizontal plane along the height direction.

When assembling, one row of power terminal pairs 2a is inserted into the aforementioned insulating body 1 in a backward-to-front direction, and the other row of power terminal pairs 2b is inserted into the aforementioned insulating body 1 in the up-down direction, and one of the aforementioned rows The power terminal pair 2 a is located on the lower side of the aforementioned carrying portion 112, and the aforementioned other row of power terminal pair 2 b is located on the upper side of the aforementioned carrying portion 112.

Further, in this embodiment, one of the aforementioned power terminal pairs 2a is the power terminal pair located in the lower row, and the aforementioned other power terminal pair 2b is the power terminal pair located in the upper row. In addition, the holding portion 201 of each power terminal 21 of the power terminal pair 2 located in the upper row extends in the vertical direction, and the holding portion 201 of each power terminal 21 of the power terminal pair 2 located in the lower row extends in the front-rear direction. In other embodiments of the present invention, the power terminal pair 2 in the lower row may be inserted into the insulating housing 1 in the vertical direction, and the power terminal pair 2 in the upper row may be inserted into the insulating housing 1 in the front-rear direction.

The holding parts 201 of the two power terminals 21 arranged in pairs in the other row of power terminal pairs 2b are parallel and spaced in the front-to-rear direction so as to interfere with the corresponding holding grooves 1321 in the terminal groove 13. Preferably, the holding parts 201 is arranged perpendicular to the aforementioned mounting surface 110 so that the aforementioned other row of power terminal pair 2b can be smoothly inserted into the aforementioned insulating housing 1.

The two power terminals 21 in each power terminal pair 2 are jointly received in the same terminal slot 13. Each power terminal 21 in the other row of power terminal pairs 2b has a first horizontal portion 204 and a second parallel to each other. The horizontal portion 205, the first horizontal portion 204 and the second horizontal portion 205 are respectively connected to the top and bottom ends of the holding portion 201. The first and second horizontal portions 204 and 205 are both sheet-like structures. The solder feet 203 are formed by bending and extending downward from the rear end of the first horizontal portion 204, and the solder feet 203 of each row of the power terminal pair 2 Into two rows aligned in the transverse direction.

In one of the aforementioned power terminal pairs 2a, the holding portion 201 of each power terminal 21 is formed extending backward from its contact portion 202. The holding portion 201 is a sheet-like structure extending in the horizontal direction. Each power terminal 21 is also It has a first bending portion 206 formed by bending and extending upward from the rear end of the holding portion 201 and a second bending portion 207 bending and extending backward from the top end of the first bending portion 206. The rear end of the second bending portion 207 is formed by bending downwards, and the aforementioned first bending portion 206 extends obliquely at a certain angle to the height direction. The holding parts 201 of the two power terminals 21 in each power terminal pair 2a are stacked in the height direction, and the second bending parts 207 are stacked in the height direction.

In the embodiment shown in the present invention, each power terminal 21 has two contact portions 202 formed extending forward. In other embodiments, each power terminal 21 may also have three or more contact portions 202. .

Please refer to the first to eighth figures in combination with the tenth figure. The aforementioned electrical connector 100 also has a cover 3 assembled and fixed to the aforementioned insulating body 1. When the aforementioned power terminal pair 2 is installed in the aforementioned insulating body 1 The cover 3 is assembled to the insulating body 1 along the up and down direction, and is arranged adjacent to the other row of power terminal pair 2b, and further isolates it from the outside on the upper side of the power terminal pair 2, and performs the operation on the power terminal pair 2. Auxiliary fixation.

The terminal groove 13 on the aforementioned insulating body 1 corresponding to the aforementioned other row of power terminal pair 2b is opened to the outside in the vertical direction, and the aforementioned cover 3 has an inner side close to and opposite to the aforementioned inner side of the other row of power terminal pair 2b. On the outer side, the inner side of the cover 3 is provided with a plurality of pressing portions 301 respectively abutting to the other row of power terminal pairs 2b.

The cover body 3 includes a front cover plate 31 located on the front side, a rear cover plate 32 located on the rear side, and a connecting plate 34 connecting the front cover plate 31 and the rear cover plate 32. The front cover plate 31 covers the outer side of the docking portion 12, The rear cover plate 32 covers the outer side of the mounting portion 11, and the connecting plate 34 is provided with a plurality of limiting grooves 341 for receiving and positioning the corresponding limiting protrusions 141.

In addition, the cover body 3 has a plurality of heat dissipation grooves 302 penetrating through it in the height direction and communicating with the terminal groove 13. Furthermore, the front cover plate 31 is provided with two rows of heat dissipation grooves 302, and the back cover plate 32 is also provided with two rows of heat dissipation grooves 302. The cover body 3 is further provided with a plurality of recesses 3031 recessed downwardly from its top surface at its rear end and heat dissipation holes 3032 communicating with the corresponding recesses 3031, each of the aforementioned recesses 3031 corresponds to the two aforementioned heat dissipation holes 3032 Is provided, and further a through-type heat dissipation structure is formed at the rear end of the aforementioned cover 3.

In addition, at least a pair of buckle portions 304 are provided on the inner side of the aforementioned cover 3, and the aforementioned insulating body 1 has locking portions 1123 located on both sides in the transverse direction to cooperate with the aforementioned buckle portions 304.

The inner side of the cover 3 is also provided with a plurality of protrusions 305 protruding toward the insul The aforementioned spacing grooves 306 are aligned in the front and rear direction, and each of the aforementioned protrusions 305 is located between two adjacent power terminal pairs 2, which not only increases the structural strength of the cover 3, but also increases the distance between the power terminals 21 Arc crawling distance. In this embodiment, the aforementioned cover 3 has two sets of the aforementioned protrusions 305 arranged at intervals in the front-rear direction, and the two sets of protrusions 305 are aligned in the front-rear direction, and are located in a group of the protrusions 305 on the rear side, adjacent to each other. At least one aforementioned heat dissipation groove 302 is sandwiched between the two protrusions 305.

When assembling, the solder feet 203 of the lower power terminal pair 2 are bent and formed, and then stacked together and inserted into the aforementioned insulating body 1 in the front-rear direction, and then the two power terminals 21 in the upper power terminal pair are sequentially Insert into the aforementioned insulating body 1 along the height direction. Of course, the two power terminals 21 of the upper row of power terminal pairs 2 can be combined and stacked together and then inserted into the aforementioned insulating body 1 together, and finally the aforementioned cover 3 Assemble to the upper side of the aforementioned insulating body 1 in a top-down direction to cover and further fix the aforementioned power terminal pair 2, which can realize automated production, improve production efficiency, and reduce manufacturing difficulty.

Please refer to the first to sixth figures. In this embodiment, the aforementioned electrical connector 100 further has a plurality of signal terminals 4 located on one side of the aforementioned power terminal pair 2 in the lateral direction and assembled in the aforementioned insulating body 1. And the base body 5 for fixing the pins 43 of the aforementioned signal terminal 4.

The electrical connector 100 of the present invention has a low center height so as to be electrically connected to the mating element, and one row of power terminal pairs 2a of the electrical connector 100 is inserted into the aforementioned insulating body 1 in a backward-to-front direction. A row of power terminal 2b pairs are inserted into the aforementioned insulating body 1 along the up and down direction to avoid the trouble caused to each other when the two rows of power terminal pairs 2 are installed in the same direction, reduce the production difficulty and cost of the product, and realize the electrical connector 100. It can transmit large current, and the overall height and center height are low. At the same time, it solves the problem of difficult assembly of multi-row power terminals.

In particular, it should be pointed out that for those of ordinary skill in the art, equivalent changes made to the present invention under the teaching of the present invention should still be included in the claimed scope of the patent application of the present invention.

100: electrical connector 1: Insulating body 11: Installation Department 110: mounting surface 112: Bearing Department 1121: Spacer 1123: Locking part 113: Extension 1132: Containment Slot 12: Docking Department 121: front wall 13: terminal slot 131: The first groove 132: second groove 1321: holding slot 14: compartment 141: Limit convex 2, 2a, 2b: power terminal pair 201: Holding Department 202: Contact 203: Solder foot 204: The first horizontal part 205: The second horizontal part 206: The first bending part 207: The second bending part 21: Power terminal 3: cover body 301: Pressure Department 302: heat sink 3031: Depressed part 3032: cooling holes 304: buckle part 305: protruding part 306: Interval slot 31: Front cover 32: rear cover 34: connection board 341: Limit Slot 4: Signal terminal 43: pin 5: Seat

The first figure is a three-dimensional assembly diagram of the first embodiment of the electrical connector of the present invention. The second to third figures are views from another perspective of the electrical connector shown in the first figure. The fourth figure is a partial exploded view of the electrical connector shown in the first figure. Figure 5 is a further exploded view of the electrical connector shown in Figure 4. The sixth figure is a partial assembly diagram of the electrical connector shown in the fifth figure. Figures 7 to 8 are cross-sectional views of the electrical connector shown in Figure 1. Figure 9 is a view from another perspective of the insulating body of the electrical connector shown in Figure 5. Figure 10 is a view from another perspective of the cover of the electrical connector shown in Figure 5.

100: electrical connector

11: Installation Department

112: Bearing Department

1121: Spacer

1132: Containment Slot

121: front wall

1321: holding slot

14: compartment

2b: Power terminal pair

201: Holding Department

202: Contact

204: The first horizontal part

205: The second horizontal part

3: cover body

3031: Depressed part

3032: cooling holes

31: Front cover

32: rear cover

4: Signal terminal

5: Seat

Claims (10)

An electrical connector comprising an insulating body and a plurality of power terminal pairs fixed to the insulating body. The insulating body has a mounting portion for mounting on a circuit board, a butting portion extending forward from the mounting portion, and a plurality of front and rear edges A terminal slot extending in the direction, the aforementioned power terminal pair is fixed in the corresponding terminal slot of the aforementioned insulating body and divided into two rows arranged along the height direction. Each aforementioned power terminal pair in each row includes two power terminals, each power terminal It comprises a holding part held in the corresponding terminal groove, at least a pair of contact parts extending forward from the front end of the holding part, and at least one solder foot formed by bending and extending from the rear end of the holding part, one row of the aforementioned power terminals The pair is inserted into the aforementioned insulating body in the backward-to-front direction, and the other row of power terminal pairs is inserted into the aforementioned insulating body in the up-and-down direction. The electrical connector described in item 1 of the scope of patent application, wherein the holding portion of each power terminal of the aforementioned power terminal pair located in the upper row extends in the up and down direction, and each power terminal of the power terminal pair located in the lower row is held The portion extends in the front-rear direction. The electrical connector described in item 1 of the scope of patent application, wherein the electrical connector further has a cover assembled and fixed to the insulating body, and after the power terminal pair is installed in the insulating body, the cover moves in the up and down direction Assembled in the aforementioned insulating body, and arranged adjacent to the aforementioned other row of power terminal pairs. The electrical connector described in item 3 of the scope of patent application, wherein the terminal grooves on the insul The inner side of the terminal pair and the outer side opposite to the inner side are arranged, and the inner side of the cover body is provided with a plurality of pressing parts respectively abutting to the other row of power terminal pairs. The electrical connector described in item 4 of the scope of patent application, wherein the aforementioned cover body includes a front cover plate located on the front side, a rear cover plate located on the rear side, and an adapter plate connecting the front cover plate and the rear cover plate, and the aforementioned front cover plate covers On the outer side of the mating portion, the rear cover plate covers the outer side of the mounting portion, the insulating body has a plurality of limiting protrusions, and each limiting protrusion is located between two adjacent terminal slots, and the connecting plate is provided There are a plurality of limit grooves for accommodating and positioning the corresponding limit protrusions. The electrical connector described in item 1 of the scope of the patent application, wherein the holding parts of the two power terminals arranged in pairs in the other row of power terminals are parallel and spaced in the front-to-rear direction to hold correspondingly in the terminal slot Slot interference fit. For the electrical connector described in item 1 of the scope of the patent application, the two power terminals in each pair of power terminals are jointly accommodated in the same terminal slot, and each power terminal in the other row of power terminal pairs has A first horizontal portion and a second horizontal portion are parallel to each other, and the first horizontal portion and the second horizontal portion are respectively connected to the top and bottom ends of the holding portion. According to the electrical connector described in any one of items 3 to 7 of the scope of the patent application, the cover has a plurality of heat dissipation grooves that penetrate it in the height direction and communicate with the terminal groove. The electrical connector described in any one of items 3 to 7 of the scope of the patent application, wherein the inner side of the cover body is also provided with at least a pair of buckle parts, and the insulating body has two sides located on both sides in the transverse direction. The locking part that cooperates with the aforementioned buckle part. The electrical connector described in any one of items 4 to 7 of the scope of the patent application, wherein the inner side of the cover body is further provided with a plurality of protrusions protruding toward the insulating body, and two adjacent pressing portions They are arranged at intervals along the transverse direction to form an interval groove, and the protrusions and the corresponding interval grooves are aligned and arranged in the front-to-rear direction.

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