TW202025571A - Electrical connector and electrical connector with the same - Google Patents

Abstract

The present invention relates to an electrical connector and an electrical connector assembly with the same, the electrical connector comprises an insulative housing and a plurality of contacts retained in the insulative housing. The insulative housing has a mounting face fixed on a first printed circuit board, the contacts are disposed in pairs for a complementary contact inserted into each pair. The contacts are independent of each other, and two neighboring contacts are formed a contact pair mating with the complementary connector. Each contact is provided with a retaining portion fixing in the insulative housing, a contact arm extending from the retaining portion and a tail, and the retaining portion has a first retaining portion and a second retaining portion bending from the first retaining portion. In a mounting direction of the insulative housing, the distance between a top end of the first retaining portion and a bottom surface of the second retaining portion is not greater than 1mm.

Description

Electric connector and electric connector combination with the electric connector

The invention relates to an electrical connector and an electrical connector combination with the electrical connector.

The traditional electrical connector assembly includes mutually matched electrical connectors and mating connectors. However, when the electrical connectors need to meet the requirements of low-profile and miniaturized use, the retention force between the conductive terminals and the insulating body is often insufficient.

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

The object of the present invention is to provide an electrical connector with a lower height and better retention between the conductive terminal and the insulating body, and an electrical connector assembly with the electrical connector.

In order to achieve the above objective, the present invention provides an electrical connector for mounting on a first circuit board. The electrical connector includes an insulating body and a plurality of conductive terminals fixed to the insulating body. The insulating body is provided for mounting to the first circuit. On the mounting surface of the board, the aforementioned plurality of conductive terminals are arranged in pairs for the mating terminals to be inserted in between, wherein the aforementioned conductive terminals are independent of each other, and each two conductive terminals constitute a terminal pair for the same mating terminal to be inserted, and each of the aforementioned conductive terminals It has a holding part fixed to the insulating body, a contact arm and a welding foot extending from the holding part. The holding part has a first holding part and a second holding part formed by bending and extending from the first holding part. In the installation direction of the insulating body, the distance between the top of the first holding portion and the bottom surface of the second holding portion is not more than 1 mm.

As a further improvement of the present invention, the first holding portion is perpendicular to the mounting surface, and its two sides in the front and rear direction are respectively provided with interference portions fixed to the insulating body, and the second holding portion is connected to the mounting surface. parallel.

As a further improvement of the present invention, wherein the holding portion has at least a pair of the second holding portions which are separately arranged on both sides of the welding leg in the front and rear direction.

As a further improvement of the present invention, the center line of the contact arm and the mounting surface are arranged at an angle.

As a further improvement of the present invention, the contact arm of each conductive terminal has a contact portion protruding toward another conductive terminal disposed oppositely, the contact portion is located on the mating side of the conductive terminal, and the free end of the contact arm is located thereon The butt side is provided with a guide surface on the outer periphery.

As a further improvement of the present invention, the insulative body includes a main body that is fastened to the holding portion and legs extending downward from the main body for mounting on the first circuit board. In the mounting direction, the main body The height of the part is not higher than 3.5mm.

As a further improvement of the present invention, the holding portion further has a third holding portion extending upward from the top end of the first holding portion, and the third holding portion is arranged in parallel with the first holding portion and has a front-to-back direction Barbs on both sides.

In order to achieve the above objective, the present invention also provides an electrical connector assembly, wherein the electrical connector assembly includes the electrical connector and a mating connector that is plugged into the electrical connector, and the mating connector is used for mounting on the second The circuit board has a mating body and a plurality of mating terminals fixed on the mating body, and each of the mating terminals is inserted into a corresponding terminal pair of the electrical connector and is in mechanical and electrical contact with it.

As a further improvement of the present invention, the docking terminal has a fixed portion fixed to the docking body, a contact piece and a welding portion extending from the fixed portion, the contact piece is provided with a guide surface on its outer periphery, and the guide surface It is arranged at least on the adjacent two sides of the contact sheet.

As a further improvement of the present invention, the mating connector can be inserted into the electrical connector at least in a first direction and a second direction different from the first direction, the first direction being a height direction perpendicular to the mounting surface, The aforementioned second direction is an oblique direction set at an oblique angle to the aforementioned mounting surface.

Compared with the prior art, the height of the electrical connector and the electrical connector combination of the present invention is lower, which can meet the needs of low-profile use. It is achieved by connecting the top of the first holding portion of the conductive terminal to the bottom surface of the second holding portion. The distance t between the two is set to be no more than 1 mm, and the second holding part bent and extended from the first holding part is used to cooperate with the insulating body to further strengthen the holding force between the two.

Please refer to Figures 1 to 16 for the first preferred embodiment of the electrical connector assembly of the present invention. The aforementioned electrical connector assembly includes an electrical connector 100 and a mating connector 200 that mate with each other. The aforementioned electrical connector 100 and the mating connector 200 are used for mounting on the first and second circuit boards 3 and 4 respectively.

Please refer to the first and second diagrams, which are the first state and the second state after the electrical connector 100 and the mating connector 200 are plugged in. For ease of description, the following description of the electrical connector assembly is based on The placement direction of the electrical connector 100 and the first circuit board 3 in the first and second figures is regarded as a horizontal direction, that is, whether in the first state or the second state, the electrical connector 100 is always placed horizontally. In the state, the docking connector 200 is also placed horizontally; in the second state, the docking connector 200 is perpendicular to the electrical connector 100 and is also placed in a vertical direction. In addition, when introducing the electrical connector 100, the butting end of the electrical connector 100 is regarded as the front end, and the other end disposed opposite to the butting end is regarded as the back end.

Please refer to the first to ninth figures, the aforementioned electrical connector 100 has an insulating body 11 and a plurality of conductive terminals 12 fixed to the aforementioned insulating body 11, and the aforementioned insulating body 11 has a device for mounting on the first circuit board 3. On the mounting surface 110, the aforementioned conductive terminals 12 are arranged in pairs. The conductive terminals 12 are arranged along the transverse direction and are fixed to the insulating body 11.

Please refer to Figures 4 to 6 in combination with Figure 12, the aforementioned insulating body 11 includes a main body 111 and a leg 112 extending downward from the main body 111 for mounting on the first circuit board 3. As shown in Figure 11, in the installation direction of the insulating body 11, the height h of the main body 111 is not higher than 3.5 mm.

Please refer to the first to fifth figures in combination with the seventh figure. The aforementioned docking connector 200 is used to be installed on the second circuit board 4 and has a docking body 21 and a plurality of docking terminals 22 fixed to the docking body 21. Each of the aforementioned mating terminals 22 is inserted between the two conductive terminals 12 arranged in a pair and makes mechanical and electrical contact therewith.

Please refer to Figures 3 to 11, the aforementioned conductive terminals 12 are arranged independently of each other, and every two conductive terminals 12 constitute a terminal pair for the same mating terminal 22 to be inserted into. Specifically, each of the aforementioned conductive terminals 12 has a holding portion 121 fixed to the insulating body 11, a contact arm 122 and a solder foot 123 extending from the aforementioned holding portion 121, wherein the aforementioned holding portion 121 is fastened to the aforementioned main body 111 .

Each of the aforementioned conductive terminals 12 has a mating side and a non-matching side that are oppositely arranged. In the lateral direction, the contact arm 122 of the aforementioned conductive terminal 12 extends obliquely toward the other oppositely arranged conductive terminal 12, in the direction from back to front. Above, the contact arms 122 of the two aforementioned conductive terminals 12 in the same terminal pair extend toward each other. In addition, the aforementioned contact arm 122 extends forward while at the same time and extends upward obliquely, so that the center line C-C' of the aforementioned contact arm 122 and the aforementioned mounting surface 110 are arranged at an angle, so as to adapt to the electrical connector 100 and the butt connection The multi-angle insertion between the devices 200 disperses the stress during insertion, and prevents the contact arm 122 from yielding and deformation due to excessive insertion force or insufficient strength during the insertion process; and, since the contact arm 122 is upward The inclined state can increase the insertion and extraction force when mating with the mating terminal 22 and increase the contact area between the two.

Further, the contact arm 122 of each conductive terminal 12 has a contact portion 1221 protruding toward another conductive terminal 12 disposed oppositely. The contact portion 1221 is located on the mating side of the conductive terminal 12, and the free end of the contact arm 122 A guide surface 1223 on the outer periphery is provided on the butting side. In this embodiment, the guide surface 1223 is continuously provided at least on the upper side and the front side of the contact arm 122 so that the mating terminal 22 can be smoothly inserted and removed under the guidance of the guide surface 1223 from the upper side or the front side.

The holding portion 121 has a first holding portion 1211 and a second holding portion 1212 formed by bending and extending from the first holding portion 1211. As shown in FIG. 10, in the installation direction of the insulating body 11, the first holding portion 1211 is The distance t between the top end of the portion 1211 and the bottom surface 12120 of the second holding portion 1212 is not greater than 1 mm.

Further, the first holding portion 1211 is perpendicular to the mounting surface 110, and its two sides in the front-rear direction are respectively provided with interference portions 12112 fixed to the insulating body 11, and the second holding portion 1212 is connected to the first The holding portion 1211 is vertical and parallel to the mounting surface 110, so that the holding portion 121 of the conductive terminal 12 is combined with the insulating body 11 in different directions to enhance the holding force with the insulating body 11 and prevent a single direction The bonding force caused by the fit is weak; in addition, the first and second holding portions 1211 and 1212 extending in different directions can also prevent the conductive terminal 12 from curling during molding. Preferably, the holding portion 121 has at least one pair of the second holding portions 1212 that are separately arranged on both sides of the welding leg 123 in the front and rear direction, so that effective positioning can be performed on the front and back sides of the welding leg 123 to prevent the conductive terminal 12 Skewed.

In this embodiment, the aforementioned first holding portion 1211 is substantially L-shaped, and includes a longitudinal portion 12113 extending in the front-rear direction and an upright portion 12114 extending in the height direction. In the front-rear direction, the aforementioned upright portion 12114 is located in the aforementioned longitudinal portion After 12113. The contact arm 122 is inclined forward from the upper position on the front side of the upright portion 12114 and is bent and extended, and forms a gap with the longitudinal portion 12113.

In addition, the holding portion 121 further has a third holding portion 1213 extending upward from the top end of the first holding portion 1211. The third holding portion 1213 is arranged in parallel with the first holding portion 1211 and has a front-to-rear direction. 12131 barbs on both sides. The third holding portion 1213 and the solder foot 123 are separately disposed on both sides of the first holding portion 1211 in the height direction, and the third holding portion 1213 is located behind the contact arm 122 in the front-to-rear direction. Further, the third holding portion 1213 extends straight upward from the first holding portion 1211, and its width in the front-rear direction is smaller than the width of the second holding portion 1212 in the front-rear direction.

The second holding portions 1212 of the two conductive terminals 12 in the same terminal pair extend toward each other so that their ends are close to each other. The solder feet 123 of the two conductive terminals 12 in the same terminal pair are arranged face to face, and are inserted and welded together In the same through hole (not shown) on the first circuit board 3.

The aforementioned insulating body 11 has a plurality of slots 1112 arranged in the transverse direction and a partition wall 1113 separating two adjacent slots 1112. The contact arms 122 of the two conductive terminals 12 in the same terminal pair are accommodated and exposed in the same slot. Slot 1112.

In addition, the aforementioned insulating body 11 also has a plurality of insertion holes 1114 into which the aforementioned third holding portion 1213 is inserted. In this embodiment, the aforementioned insertion holes 1114 penetrate the main body portion 111 upward, and every two insertion holes 1114 form a terminal pair. A corresponding set of sockets 1114 is located between two adjacent sockets 1112 in the lateral direction.

The mating body 21 has a main body 211 and a protruding arm 212 protruding from the mating side of the main body 211 and forming a second holding part 23. When the mating connector 200 is inserted into the electrical connector 100, the The protruding arm 212 is inserted into and relatively positioned in the limiting slot 113.

The aforementioned protruding arm 212 has a pair of pivoting portions 2121 respectively inserted into the corresponding pivot holes 114, and the aforementioned docking body 21 rotates relative to the insulating body 11 with the pivoting portion 2121 as a rotation axis to accommodate the multi-directional insertion of the docking connector 200 to Electric connector 100.

Further, in this embodiment, the mating body 21 has a pair of the protruding arms 212 spaced along the transverse direction, and the pivoting portion 2121 is provided on one side of the pair of protruding arms 212 away from each other.

The mating terminal 22 is in the shape of a sheet, and it has a fixing portion 221 fixed to the mating body 21, a contact piece 223 extending from the fixing portion 221, and a welding portion 224. The contact piece 223 is provided with a guide on its outer periphery. The guide surface 2231 is at least provided on the adjacent two sides of the contact piece 223.

The fixing portion 221 includes a first fixing portion 2211 extending in the front-rear direction and a pair of second fixing portions 2212 extending downward from the first fixing portion 2211. The pair of second fixing portions 2212 are spaced apart in the front-rear direction.

The electrical connector 100 and the mating connector 200 have a holding mechanism for positioning each other. The holding mechanism is located in the middle of the electrical connector assembly in the transverse direction to ensure that the mating connector 200 and the electrical connector 100 are mated Consistency. It should be noted that, in the illustrated embodiment of the present invention, the holding mechanism is located in the middle of the electrical connector assembly, that is, the vertical center plane of the holding mechanism overlaps the vertical center plane of the electrical connector assembly.

As shown in Figure 11, there are other embodiments of the insulating body 11 of the electrical connector of the present invention. The first holding portion 13 is not arranged at the middle position of the insulating body 11, that is, the vertical center surface of the aforementioned holding mechanism can be The vertical center plane of the aforementioned electrical connector assembly does not overlap, as long as the holding mechanism is not arranged close to the two lateral edges of the electrical connector assembly in the transverse direction.

That is to say, the middle position of the aforementioned electrical connector assembly (the position where the holding mechanism is set) does not only refer to the absolute middle position in the transverse direction, as long as the vertical center plane of the middle position is to the electrical connector in the transverse direction The distance L1 of the vertical center plane of the combination may be less than the distance L2 to the side edge 102 adjacent to the vertical center plane of the middle position.

The holding mechanism includes a first holding portion 13 formed on the electrical connector 100 and the second holding portion 23 formed on the mating connector 200, and the second holding portion 23 cooperates with the first holding portion 13 In order to realize the positioning between the electrical connector 100 and the mating connector 200.

In this embodiment, the first holding portion 13 includes the limiting groove 113 recessed in the middle position of the insulating body 11 in the lateral direction, and the insulating body 11 further has the limiting groove 113 located in the lateral direction. A pair of pivot holes 114 on the upper two sides, the aforementioned pair of pivot holes 114 communicate with the aforementioned limit slot 113.

Furthermore, the aforementioned insulating body 11 further has a pair of notches 115 arranged on both sides in the transverse direction, and the aforementioned pair of notches 115 is laterally open to the outside.

The docking body 21 also has a pair of limit arms 213 protruding from the docking side of the body portion 211. The pair of limit arms 213 are disposed oppositely at both ends of the body portion 211 in the transverse direction. The insulating body A pair of nicks 115 of 11 are laterally opened outward to receive and fix the corresponding limit arm 213. In this embodiment, the extension direction of the aforementioned limit arm 213 is the same as the extension direction of the aforementioned protruding arm 212 so that the two are synchronously plugged into the insulating body 11.

Please refer to the first, second and twelfth to fifteenth figures, in the present invention, the aforementioned docking connector 200 can be inserted at least along a first direction and a second direction different from the first direction To the aforementioned electrical connector 100. Further, the first direction is a height direction perpendicular to the mounting surface 110, and the second direction is an oblique direction set at an oblique angle to the mounting surface 110. Preferably, the included angle between the second direction and the mounting surface 110 is 45 degrees, so as to facilitate the insertion of the mating connector 200 and to be limited to the electrical connector 100.

That is, as shown in Figures 12 and 13, regardless of whether the docking connector 200 is in the first state or the second state, it can move from directly above the docking portion 101 of the electrical connector 100 along the first One direction (the direction indicated by the arrow in the figure) is inserted into the aforementioned electrical connector 100; as shown in Figure 14 and Figure 15, no matter if the mating connector 200 is in the first state or the second state, its It can also be plugged into the electrical connector 100 along the second direction (the direction shown by the arrow in the figure) from diagonally above the electrical connector 100.

Please refer to Figures 16 and 17, in the first preferred embodiment of the present invention, the aforementioned electrical connector 100 can also be plugged in a third direction perpendicular to the aforementioned first direction and lateral direction. As for the aforementioned docking connector 200, in this embodiment, the aforementioned third direction is parallel to the aforementioned mounting surface 110, that is, a horizontal direction. As shown in Figure 16, when the mating connector 200 is placed horizontally, the mating connector 200 can be plugged into the electrical connector 100 from the front of the electrical connector 100 along the third direction (ie, the horizontal direction). When the docking connector 200 is placed vertically, the foregoing docking connector 200 can also be plugged into the foregoing electrical connector 100 from the front of the foregoing electrical connector 100 along the third direction.

Compared with the traditional electrical connector assembly, one pair of connectors that are mated need to be inserted in a predetermined and single mating direction before they can be inserted. The electrical connector and the mating connector of the electrical connector assembly of the present invention can be inserted in multiple directions. Plugging is not restricted by the application environment, and can be easily applied to more application environments to improve the convenience of plugging and unplugging.

Please refer to Figures 18 to 22, which is a second preferred embodiment of the electrical connector assembly of the present invention. In this embodiment, the aforementioned electrical connector assembly includes an electrical connector 100' and a butt connection The basic structure and assembling relationship of the electrical connector 100' and the mating connector 200' are the same as those in the first preferred embodiment, and the aforementioned mating connector 200' can also be in the first direction and with the first A second direction with a different direction is inserted into the aforementioned electrical connector 100', the aforementioned first direction is a height direction perpendicular to the mounting surface of the aforementioned electrical connector 100', and the aforementioned second direction is an oblique angle to the aforementioned mounting surface. Oblique direction; for other identical structures, refer to the description of the first preferred embodiment, which will not be repeated here, and only the differences between the two will be described below.

The insulating body 11' of the aforementioned electrical connector 100' also has a limiting slot 113' arranged in the middle position, and the aforementioned insulating body 11' also has a snap arm 116' arranged in the aforementioned limiting slot 113' and along the aforementioned A through slot 117' that penetrates it in the first direction, the aforementioned buckle arm 116' is protruding upward and a forward-protruding buckle portion 1161' is formed at its free end, the aforementioned through slot 117' and the aforementioned limit groove 113' Connected,

The protruding arm 212' of the aforementioned docking body 21' has a protrusion 2122' protruding into and fixed in the aforementioned through groove 117' and a protruding rib 2123' engaged with the aforementioned buckling arm 116', the aforementioned protruding rib 2123 'Move downward or obliquely downward to insert and pass over the aforementioned buckle portion 1161', and lock and fix it to prevent loosening.

The electrical connectors 100, 100' and the mating connectors 200, 200' of the electrical connector assembly of the present invention are positioned to each other by a holding mechanism, and the holding mechanism is arranged at the middle position of the electrical connector assembly in the transverse direction to ensure The electrical connectors 100, 100' and the mating connectors 200, 200' can be inserted and positioned stably, and the consistency of the conductive terminals and the mating terminals can be ensured. In addition, the height of the aforementioned electrical connector and its combination is relatively low, which can meet the needs of low-profile use. Among them, the height of the main body of the insulating body 11 of the electrical connector 100 is not higher than 3.5mm, and the holding of the conductive terminals 12 is relatively comparative. It is difficult. The present invention sets the distance t between the top end of the first holding portion 1211 of the conductive terminal 12 to the bottom surface 12120 of the second holding portion 1212 to be no more than 1 mm, and the distance t from the first holding portion 1211 is bent and extended. The second holding portion 1212 cooperates with the insulating body 11 to further strengthen the holding force between the two.

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, 100': electrical connector 11.11': Insulating body 101: Docking Department 102: side edge 110: mounting surface 111: main body 1112: slot 1113: next wall 1114: jack 112: Legs 113, limit slot 113': limit slot 114: pivot hole 115: missing slot 116': snap arm 1161': buckle 117': through slot 12: conductive terminal 121: Holding Department 1211: The first holding part 12112: Interference Department 12113: Longitudinal section 12114: Upright 1212: The second holding part 12120: bottom surface 1213: The third holding part 12131: barb 122: contact arm 1221: Contact 1223: Guide surface 123: Solder foot 13: The first holding part 200, 200': docking connector 21, 21': docking body 211: Main Body 212, 212': protruding arms 2122': bump 2123': convex rib 2121: Pivot 213: Limit Arm 22: Butt terminal 221: fixed part 2211: The first fixed part 2212: second fixed part 223: contact piece 2231: guide surface 224: Welding Department 23: The second holding part 3: The first circuit board 4: The second circuit board

The first figure is a three-dimensional assembly diagram of the first preferred embodiment of the electrical connector assembly of the present invention, where the electrical connector and the mating connector are installed on the circuit board and inserted into each other in the first state. The second figure is a three-dimensional assembly diagram of the first preferred embodiment of the electrical connector assembly of the present invention, where the electrical connector and the mating connector are mounted on the circuit board and are inserted into each other in the second state. The third figure is a schematic diagram of the insertion of the electrical connector assembly shown in the first figure when it is not installed on the circuit board. The fourth figure is a three-dimensional view of the electric connector and the mating connector of the electric connector assembly shown in the third figure when not plugged in. Figure 5 is a partial exploded view of the electrical connector assembly shown in Figure 3. Figure 6 is an exploded perspective view of the electrical connector shown in Figure 4. Figure 7 is an exploded perspective view of the mating connector shown in Figure 4. Figure 8 is a perspective view of the conductive terminals and the mating terminals of the electrical connector assembly shown in Figure 4. Figure 9 is a perspective view of the conductive terminal shown in Figure 8. Figure 10 is a front view of the conductive terminal shown in Figure 9. Figure 11 is a schematic diagram of another embodiment of the insulating body of the electrical connector of the present invention. Figure 12 is a three-dimensional schematic view of the mating connector in the electrical connector assembly shown in Figure 1 being inserted into the electrical connector along the first direction. Figure 13 is a perspective view of the mating connector in the electrical connector assembly shown in Figure 2 being inserted into the electrical connector along the first direction. Figure 14 is a three-dimensional schematic diagram of the mating connector of the electrical connector assembly shown in Figure 1 being inserted into the electrical connector along the second direction. Figure 15 is a perspective schematic view of the butt connector in the electrical connector assembly shown in Figure 2 being inserted into the electrical connector along the second direction. Figure 16 is a perspective view of the electrical connector in the electrical connector assembly shown in Figure 1 being plugged into the electrical connector along the third direction. Figure 17 is a perspective view of the electrical connector in the electrical connector assembly shown in Figure 2 being plugged into the electrical connector along the third direction. Figure 18 is a perspective view of the electrical connector and the mating connector in the second preferred embodiment of the electrical connector assembly according to the present invention. Figure 19 is a three-dimensional schematic diagram of the electrical connector and the mating connector in the electrical connector assembly shown in Figure 18 when they are not mated. Figure 20 is a view of the electrical connector assembly shown in Figure 19 from another perspective. Figure 21 is a cross-sectional view taken along the line XXI-XXI in Figure 18. Figure 22 is a schematic cross-sectional view of the mating connector in the electrical connector assembly shown in Figure 19 being inserted into the electrical connector along the first direction. Figure 23 is a schematic cross-sectional view of the mating connector in the electrical connector assembly shown in Figure 19 being inserted into the electrical connector along the second direction.

12: conductive terminal

12112: Interference Department

12113: Longitudinal section

12114: Upright

1212: The second holding part

12120: bottom surface

1213: The third holding part

122: contact arm

1221: Contact

1223: Guide surface

123: Solder foot

Claims (10)

An electrical connector for mounting on a first circuit board. The electrical connector includes an insulating body and a plurality of conductive terminals fixed to the insulating body. The insulating body has a mounting surface for mounting on the first circuit board. The terminals are arranged in pairs for the mating terminals to be inserted between, wherein the aforementioned conductive terminals are independent of each other, and each two conductive terminals constitute a terminal pair for the same mating terminal to be plugged in, and each of the aforementioned conductive terminals has a holding part fixed to the insulating body , The contact arm and the welding foot extending from the aforementioned holding portion, the aforementioned holding portion has a first holding portion and a second holding portion formed by bending and extending from the aforementioned first holding portion, in the installation direction of the aforementioned insulating body, the aforementioned first holding portion The distance between the top of one holding part and the bottom surface of the second holding part is not more than 1mm. The electrical connector described in item 1 of the scope of patent application, wherein the first holding portion is perpendicular to the mounting surface, and both sides in the front-rear direction are respectively provided with interference portions fixed to the insulating body. The two holding parts are parallel to the aforementioned mounting surface. The electrical connector described in item 2 of the scope of the patent application, wherein the holding portion has at least a pair of the second holding portions that are separately arranged on both sides of the solder leg in the front and rear direction. The electrical connector described in item 1 of the scope of patent application, wherein the center line of the contact arm and the mounting surface are arranged at an angle. According to the electrical connector described in item 4 of the scope of patent application, the contact arm of each of the conductive terminals has a contact portion protruding toward another conductive terminal disposed oppositely, and the contact portion is located on the mating side of the conductive terminal. The free end of the contact arm is provided with a guide surface on the outer periphery of the butting side. The electrical connector described in the first item of the scope of patent application, wherein the insulating body includes a main body part that is fastened to the fixing part and a leg part extending downward from the main body for mounting on the first circuit board. In the aforementioned mounting direction, the height of the aforementioned main body is not higher than 3.5mm. According to the electrical connector described in item 6 of the scope of patent application, the holding part further has a third holding part extending upward from the top end of the first holding part, and the third holding part is arranged in parallel with the first holding part , And have barbs on both sides of the front and back direction. An electrical connector combination, wherein the aforementioned electrical connector combination includes the electrical connector described in any one of items 1 to 7 in the scope of the patent application and a butt connector that is plugged into the electrical connector, and the aforementioned butt connector is used for It is installed on the second circuit board and has a mating body and a plurality of mating terminals fixed to the mating body, each of the aforementioned mating terminals is inserted into a corresponding terminal pair of the electrical connector and mechanically and electrically contacted with it. The electrical connector assembly described in item 8 of the scope of patent application, wherein the mating terminal has a fixing part fixed to the mating body, a contact piece and a welding part extending from the fixing part, and the contact piece is on its outer periphery A guide surface is provided, and the guide surface is provided at least on adjacent two sides of the contact sheet. According to the electrical connector assembly described in any one of the 8th to 9th patents, the mating connector can be inserted into the electrical connector at least along a first direction and a second direction different from the first direction. The first direction is a height direction perpendicular to the mounting surface, and the second direction is an oblique direction set at an oblique angle to the mounting surface.

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