CN109038003A - Electric connector - Google Patents

Abstract

The present invention provides a kind of electric connectors, it is with insulating body and is fixed on several power supply terminals pair of the insulating body, the insulating body has base portion, from the docking section that the base portion extends forward and several first end pilot trench extended along the longitudinal direction, the power supply terminal is to being contained in corresponding first end pilot trench, and each power supply terminal is to including two panels power supply terminal, every power supply terminal is equipped with the holding parts being retained in first end pilot trench, several contact portions extended to form forward from one end of the holding parts and the weld part extended from the other end of the holding parts, the contact portion of the two panels power supply terminal of each power supply terminal centering is arranged in a row along short transverse, and alternate cycles are arranged several contact portions of the two panels power supply terminal in transverse direction.Electric connector of the present invention can be effectively improved the heat condition of power supply terminal pair.

Description

electrical connector

technical field

The invention relates to an electrical connector, in particular to an electrical connector capable of effectively improving the heat generation of conductive terminals.

Background technique

The power terminal of a traditional electrical connector is usually formed from one or divided into multiple contact arms from the front end of the metal sheet, and when the electrical connector transmits current, the highest temperature of the power terminal is the contact point area of the contact arm, because The contact method of the contact point is only wire contact, which limits the current channel. In the case of the limited width of the power terminal, the power terminal is very easy to generate heat due to the current impedance, which will lead to excessive temperature of the contact point.

In view of this, it is necessary to improve the existing electrical connectors to solve the above problems.

Contents of the invention

The object of the present invention is to provide an electrical connector capable of effectively suppressing heat generation of conductive terminals.

In order to achieve the purpose of the above invention, the present invention provides an electrical connector, which includes an insulating body and several pairs of power terminals fixed to the insulating body, the insulating body has a base, and a docking portion extending forward from the base and a plurality of first terminal slots extending in the front and rear direction, the power terminal pairs are accommodated in the corresponding first terminal slots, and each of the power terminal pairs includes two pieces of power terminals, and each piece of power terminals is provided with a fixed The holding part in the first terminal groove, a number of contact parts extending forward from one end of the holding part and a welding part extending from the other end of the holding part, and two power supplies in each pair of power terminals The contact portions of the terminals are arranged in a row along the height direction, and the contact portions of the two pieces of power terminals are arranged alternately and circularly along the transverse direction.

As a further improvement of the present invention, the pairs of power terminals are divided into two rows arranged opposite to each other along the height direction, and the pairs of power terminals are arranged in pairs along the height direction to form a group, and two power terminals in each group of power terminal pairs The pairs are opposite and arranged at intervals along the height direction.

As a further improvement of the present invention, the contact portions of the power supply terminal pairs located in the same row are arranged in two rows staggered along the front-to-rear direction.

As a further improvement of the present invention, the contact areas of the contact portions of the power terminal pairs located in the same row are on the same horizontal plane.

As a further improvement of the present invention, two adjacent contact portions located in the same row are arranged staggered along the front-rear direction.

As a further improvement of the present invention, the two pieces of power terminals in each pair of power terminals are respectively outer terminals and inner terminals, and in the front-rear direction, the contact area of the contact portion of the outer terminals is larger than that of the inner terminals. The contact area of the contact part is set forward.

As a further improvement of the present invention, the holding parts of the two pieces of power terminals in each pair of power terminals are arranged at intervals along the height direction, and are installed and fixed in the same first terminal slot forward from the rear side of the base. Inside.

As a further improvement of the present invention, in the direction from top to bottom, the lengths of the holding parts of the four pieces of power terminals in each group of power terminal pairs decrease successively along the front and rear directions.

As a further improvement of the present invention, the angle between the contact arm of the outer terminal and the horizontal plane is larger than the angle between the contact arm of the inner terminal and the horizontal plane.

As a further improvement of the present invention, the top wall of the insulating body is provided with a number of first heat dissipation grooves passing through it in the height direction, and the first heat dissipation grooves are connected to the corresponding first terminal grooves on the inner side. At least the power terminal on the upper side of the pair of power terminals has a second heat dissipation groove, and the second heat dissipation groove is disposed through the holding portion of the power terminal along the height direction.

Beneficial effects of the present invention: the electrical connector of the present invention arranges the contact parts of the two power terminals in the power terminal pair in a row along the height direction to form the same row of contact parts, and several contact parts of the two power terminals alternate along the transverse direction The cycle setting can effectively increase the current channel, reduce the heat generation of the power terminal pair, and improve the transmission reliability of the electrical connector.

Description of drawings

FIG. 1 is a three-dimensional assembled view of the first preferred embodiment of the electrical connector of the present invention.

FIG. 2 is an exploded perspective view of the electrical connector shown in FIG. 1 .

FIG. 3 is a view from another perspective of the electrical connector shown in FIG. 1 .

FIG. 4 is a three-dimensional schematic view of the insulating body of the electrical connector shown in FIG. 2 .

FIG. 5 is a schematic perspective view of a set of power terminal pairs of the electrical connector shown in FIG. 2 .

FIG. 6 is an exploded perspective view of a set of power terminal pairs of the electrical connector shown in FIG. 5 .

FIG. 7 is a side view of a set of power terminal pairs of the electrical connector shown in FIG. 5 .

FIG. 8 is a schematic cross-sectional view of the electrical connector shown in FIG. 1 .

FIG. 9 is a schematic cross-sectional view of the electrical connector shown in FIG. 1 with one pair of power terminals removed.

FIG. 10 is a three-dimensional assembled view of the second preferred embodiment of the electrical connector of the present invention.

FIG. 11 is an exploded perspective view of the electrical connector shown in FIG. 10 .

FIG. 12 is a partially exploded view of a set of power terminal pairs of the electrical connector shown in FIG. 11 .

FIG. 13 is a schematic cross-sectional view of the electrical connector shown in FIG. 10 .

Detailed ways

The present invention will be described in detail below with reference to the embodiments shown in the accompanying drawings. However, this embodiment does not limit the present invention, and any structural, method, or functional changes made by those skilled in the art according to this embodiment are included in the protection scope of the present invention.

Please refer to FIG. 1 to FIG. 9 , which show a first preferred embodiment of the electrical connector 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 will take the butt end of the electrical connector 100 as the front end, and the other end opposite to the butt end as the rear end for description, that is, the front and rear direction is the direction between the electrical connector 100 and the mating component (not shown). The butt joint direction, at the same time, defines a direction perpendicular to the front-rear direction as the lateral direction, and another direction perpendicular to the front-rear direction as the height direction. In this embodiment, the size of the insulating body 1 in the lateral direction is larger than its Dimensions in the height direction and the front-to-back direction.

Please refer to Figures 1 to 4 in conjunction with Figures 8 to 9, in the present invention, the insulating body 1 has a base 11, a butt joint 12 extending forward from the base 11, a number of front and rear extending The first terminal slots 13 and a plurality of partitions 14 extending along the front-to-back direction, one partition 14 is arranged between every two adjacent first terminal slots 13 . The first terminal groove 13 penetrates the insulating body 1 along the front-to-back direction, and the barrier 14 extends forward from the base portion 11 to the front end surface 121 of the docking portion 12 .

The docking portion 12 has a docking space 120 opened forward for accommodating a docking element, and the first terminal groove 13 communicates with the docking space 120 .

In this embodiment, the insulating body 1 has upper and lower rows of first terminal slots 13 and a partition wall 15 formed between the upper row of first terminal slots 13 and the lower row of first terminal slots 13. The partition wall 15 is formed inside the base portion 11 extending along the transverse direction, and separates the upper row and the lower row of first terminal slots 13 . Further, the partition wall 15 extends forward to the front end of the base portion 11 , but does not extend forward into the docking portion 12 .

The rear side of the base 11 has a first installation surface 111, a second installation surface 112 and a third installation surface 113 arranged at intervals along the front-to-back direction, wherein the third installation surface 113, the second installation surface 112 and the first installation surface The mounting surfaces 111 are arranged sequentially along the front-rear direction.

Please refer to Fig. 4 and Fig. 9, in this embodiment, the first terminal groove 13 includes a through groove 131 passing through the base portion 11 along the front and rear direction and several fixing grooves communicating with the through groove 131 132, the fixing slots 132 are arranged in pairs and symmetrically. In this embodiment, the first terminal slot 13 has two pairs of the fixing slots 132 arranged at intervals along the height direction, and two of the fixing slots in each pair The slots 132 are located on two sides of the through slot 131 along the transverse direction. In the same first terminal slot 13 , the extension length of the fixing slot 132 on the upper side in the front-rear direction is greater than the extension length of the fixing slot 132 on the lower side.

Please refer to Figures 5 to 9, the power terminal pairs 2 are accommodated in the corresponding first terminal slots 13, and each power terminal pair 2 includes two pieces of power terminals 21, and each piece of power terminals 21 is provided with There is a holding part 201 held in the first terminal groove 13, a plurality of contact parts 202 extending forward from one end of the holding part 201, and a welding part 203 extending from the other end of the holding part 201, each The contact portions 202 of the two power terminals 21 in the 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 arranged alternately and circularly along the transverse direction.

The pair of power terminals 2 is divided into two rows oppositely arranged along the height direction, that is, the upper row of power terminal pairs and the lower row of power terminal pairs, and the pair of power terminals 2 are arranged in pairs along the height direction to form a group, each group Two power terminal pairs 2 of the power terminal pairs 2 face each other along the height direction and are arranged at intervals. In the front-rear direction, the welding portion 203 of the upper row of power terminal pairs is located behind the second installation surface 112 , and the welding portion of the lower row of power terminal pairs is located between the second installation surface 112 and the third installation surface 113 .

In this embodiment, each piece of power terminal 21 has three contact portions 202 extending forward from its holding portion 201. The holding portion 201 is a sheet structure parallel to the horizontal plane, and the contact portions 202 are curved. , and has a contact region 2020 protruding toward the partition wall 15 .

The contact portions 202 of the power terminal pairs 2 located in the same row are arranged in two rows staggered along the front-to-rear direction. At the same time, the contact areas 2020 of the contact portions 202 of the power terminal pairs 2 located in the same row are on the same horizontal plane. Further, two adjacent contact portions 202 in the same row are arranged staggered along the front-to-rear direction. In this way, when the docking element is inserted, the contact parts 202 arranged in two rows staggered along the front and rear directions can contact the docking element successively, so as to realize multi-level and multi-contact contact, make the contact more sufficient, and enhance its electrical connection. Stability and stability of current transmission, at the same time, it makes the insertion and extraction force between the docking components evenly distributed, and reduces the heat generation of the contact surface.

The two pieces of power terminals 21 in each power terminal pair 2 are respectively an outer terminal 211 and an inner terminal 212, wherein compared with the outer terminal 211, the holding part 201 and the contact part 202 of the inner terminal 212 are closer to each other. The partition wall 15 of the insulating body 1 . In the front-to-rear direction, the contact portion 202 of the outer terminal 211 is located in front of the contact portion 202 of the inner terminal 212 . The contact portion 202 of the outer terminal 211 is in contact with the docking element first, and then the contact portion 202 of the inner terminal 212 is in contact with the docking element, so as to reduce the plugging force, make the plugging feel better, and avoid long-term plugging and unplugging of the elastic contact arm Later deformation and failure, thus ensuring long-term electrical connection.

The holding parts 201 of the two pieces of power terminals 21 in each power terminal pair 2 are arranged at intervals along the height direction, and are installed and fixed in the same first terminal slot 13 from the rear side of the base part 11 forward. Inside. Both sides of each holding portion 201 along the transverse direction are respectively provided with an outwardly protruding interference portion 2011 , and the interference portion 2011 is in interference fit with the corresponding fixing groove 132 of the first terminal groove 13 .

As shown in FIG. 7 , in the direction from top to bottom, the lengths of the holding portions 201 of the four pieces of power terminals 21 in each set of power terminal pairs 2 along the front and rear directions decrease successively, that is, in the upper Among the two pieces of power terminals 21 in the row of power terminal pairs 2, the length of the holding portion 201 of the outer terminal 211 along the front and rear direction is greater than the length of the holding portion 201 of the inner terminal 212; the two pieces of power terminals in the lower row of power terminal pairs 2 21 , the length of the holding portion 201 of the inner terminal 212 along the front-rear direction is greater than the length of the holding portion 201 of the outer terminal 211 . Meanwhile, the length of the holding portion 201 of the inner terminal 212 in the upper row of power terminal pairs 2 along the front-to-back direction is greater than the length of the holding portion 201 of the inner terminal 212 in the lower row of power terminal pairs 2 .

The welding part 203 includes a plate-shaped part 2031 bent downward from the rear end of the holding part 201 and a plurality of welding legs 2032 extended downward from the bottom end of the plate-shaped part 2031. In this embodiment , the plate-shaped portion 2031 is arranged parallel to the vertical plane, and the solder pin 2032 extends along the vertical direction to be inserted into an external circuit board (not shown).

Each power terminal 21 has a plurality of elastic contact arms 204 extending forward from the front end of its holding portion 201, and the contact portion 202 is located on the front side of the corresponding contact arm 204 to contact with the docking element. The contact arm 204 passes through the first terminal slot 13 forward and is received in the docking portion 12 .

The angle between the contact arm 204 of the outer terminal 211 and the horizontal plane is larger than the angle between the contact arm 204 of the inner terminal 212 and the horizontal plane. In this embodiment, the inner terminal 212 also has a connecting arm 205 connecting its contact arm 204 with the holding portion 201, and the bending and extending directions of the connecting arm 205 and the contact arm 204 are opposite to each other so that the two The angled opening between them faces inwardly (that is, toward the partition wall 15).

Specifically, taking the upper row of power terminal pairs 2 as an example, the connecting arm 205 is bent forward and upward from the front end of the holding portion 201, and the contact arm 204 is forward and upward from the front end of the connecting arm 205. The lower bend extends so that the opening of the angle between the contact arm 204 and the connecting arm 205 faces downward. Further, the two holding parts 201 of the upper row of power terminal pairs 2 and the part located on the front side of the holding parts 201 (including a plurality of contact arms 204, connecting arms 205 and contact parts 202) and the two holding parts of the lower row of power terminal pairs 2 Each holding portion 201 and the portion located on the front side of the holding portion 201 are mirror-symmetrically arranged.

1 to 3 and shown in FIG. 9, in this embodiment, the electrical connector 100 also has a plurality of signal terminals 3 located on one side of the pair of power terminals 2 along the lateral direction. The insulating body 1 also has several second terminal slots 16 located on one side of the first terminal slot 13 .

Each signal terminal 3 includes a fixing portion 31 , an inserting portion 32 extending from one end of the fixing portion 31 , and a pin 33 extending from the other end of the fixing portion 31 . The fixing part 31 is inserted into and fixed in the second terminal groove 16 from the rear side of the base part 11 , and the insertion part 32 located at the front side of the fixing part 31 protrudes into the docking part 12 , to achieve electrical connection with the docking device. In this embodiment, barbs 311 are respectively provided on both sides of the fixing part 31, and the barbs 311 interfere with the base part 11 to realize the fixing of the signal terminals 3 in the insulating body 1, preventing When docking with the docking device, the signal terminal 3 shakes to improve docking stability.

In the electrical connector 100 of the present invention, the contact portions 202 of the two power terminals in the center of the power terminal are arranged in a row along the height direction to form the same row of contact portions, and the contact portions 202 of the two power terminals are arranged alternately and circularly along the transverse direction. It can effectively increase the current channel, reduce the heat generation of the power terminal pair 2 , and improve the transmission reliability of the electrical connector 100 .

Please refer to Fig. 10 to Fig. 13, which are the second preferred embodiment of the electrical connector of the present invention, the electrical connector 100' includes an insulating body 1' and several pairs of power terminals fixed on the insulating body 1' 2', wherein the basic structure and assembly relationship of the insulating body 1' and the power terminal pair 2' are the same as those of the electrical connector 100 in the first preferred embodiment, and will not be repeated here, and only the differences will be described below :

The top wall 17' of the insulating body 1' is provided with a number of first heat dissipation grooves 171', and the first heat dissipation grooves 171' penetrate the top wall 17' along the height direction, and the first heat dissipation grooves and their inner sides The corresponding first terminal slots 13' are connected. Further, in this embodiment, the top wall 17' is provided with two rows of the first heat dissipation grooves 171' aligned along the front and rear directions, and each row of the first heat dissipation grooves 171' is arranged side by side along the transverse direction, And in the front-to-back direction, the length of the first heat dissipation grooves 171 ′ located in the front row is greater than the length of the first heat dissipation grooves 171 ′ located in the rear row along the front-to-rear direction.

At least the power terminal 21' on the upper side of each power terminal pair 2' has at least one second heat dissipation groove 206', and the second heat dissipation groove 206' is opened on the corresponding holding portion 201', and The holding portion 201' penetrates along the height direction. In this embodiment, the second cooling groove 206' is provided on the holding part 201' of the two pieces of power terminals 21' in each upper row of power terminal pairs 2', and the second cooling groove 206' is provided in each lower row of power terminal pairs 2'. Among the two pieces of power terminals 21 ′, only the power terminal located on the upper side (that is, the inner terminal 212 ′ in the lower row of power terminal pairs 2 ′) is provided with the second cooling groove 206 ′.

Since the holding part 201' is fixed in the corresponding first terminal slot 13', the heat generated by the power terminal 21' can pass through the second cooling slot 206', the first terminal slot 13' and the first terminal slot 13'. The heat sink 171' radiates out to prevent heat from accumulating inside the insulating body 1'.

At the same time, at least one third cooling groove 207' is opened on the plate-shaped part 2031' of each power terminal 21' in the upper row of power terminal pairs 2', and in the height direction, the third cooling groove on the outer terminal 211' The length of 207' is greater than the length of the third cooling groove 207' on the inner terminal 212'. In addition, the projections on the vertical plane of the third cooling grooves 207' on the two pieces of power terminals 21' in each power terminal pair 2' in the upper row overlap at least partially, and the third cooling grooves 207' vertically The projection on the vertical plane falls into the projection of the lower row of first terminal slots 13 ′ on the vertical plane, that is, the third cooling slot 207 ′ is aligned with the lower row of first terminal slots 13 along the front-to-back direction. 'Alignment settings. In this embodiment, the projection of the third cooling groove 207' on the inner terminal 212' on the vertical plane falls into the projection of the third cooling groove 207' on the outer terminal 211' on the vertical plane. Projection interior. In this way, the outer heat dissipation channel is larger, so as to quickly dissipate the heat on the power terminal.

The above embodiments are only used to illustrate the technical solutions of the present invention without limitation. Although the present invention has been described in detail with reference to preferred embodiments, those of ordinary skill in the art should understand that the technical solutions of the present invention can be modified or equivalently replaced. Without departing from the spirit and scope of the technical solution of the present invention.

Claims (10)

1. An electrical connector, which comprises an insulating body and several pairs of power terminals fixed on the insulating body, the insulating body has a base, a docking portion extending forward from the base, and a number of first extending along the front-rear direction A terminal slot, the pair of power terminals is accommodated in the corresponding first terminal slot, and each pair of power terminals includes two pieces of power terminals, and each piece of power terminal is provided with a holding part fixed in the first terminal slot . A plurality of contact parts extending forward from one end of the holding part and a welding part extending from the other end of the holding part, characterized in that: the contact parts of the two pieces of power terminals in each pair of power terminals They are arranged in a row along the height direction, and the contact portions of the two pieces of power terminals are alternately and circularly arranged along the transverse direction. 2. The electrical connector according to claim 1, wherein the pair of power terminals is divided into two rows arranged opposite to each other along the height direction, and the pair of power terminals is arranged in pairs along the height direction to form a group, each The two power terminal pairs in the set of power terminal pairs face each other along the height direction and are arranged at intervals. 3. The electrical connector according to claim 2, wherein the contact portions of the power terminal pairs located in the same row are arranged in two rows staggered along the front and rear directions. 4. The electrical connector according to claim 3, wherein the contact areas of the contact portions of the power terminal pairs located in the same row are on the same horizontal plane. 5. The electrical connector according to claim 3 or 4, wherein two adjacent contact portions located in the same row are staggered along the front-to-rear direction. 6. The electrical connector according to claim 2, wherein the two power terminals in each pair of power terminals are respectively outer terminals and inner terminals, and in the front-rear direction, the outer terminals The contact area of the contact part is arranged in front of the contact area of the contact part of the inner terminal. 7. The electrical connector according to claim 6, wherein the holding portions of the two pieces of power terminals in each pair of power terminals are arranged at intervals along the height direction, and from the rear side of the base portion The front mounting is fixed in the same first terminal slot. 8. The electrical connector according to claim 6, characterized in that: in the direction from top to bottom, the holding parts of the four power terminals in each group of power terminals are in sequence along the length of the front and back directions. decrease. 9. The electrical connector according to claim 6, wherein the angle between the contact arm of the outer terminal and the horizontal plane is larger than the angle between the contact arm of the inner terminal and the horizontal plane. 10. The electrical connector according to claim 6, characterized in that: the top wall of the insulating body is provided with a number of first heat dissipation grooves penetrating it along the height direction, and the first heat dissipation grooves correspond to the inside of the first heat dissipation groove. The first terminal grooves communicate with each other, and at least the power terminal on the upper side of each pair of power terminals has a second heat dissipation groove, and the second heat dissipation groove penetrates through the holding part of the power terminal along the height direction. department.