Connector double-reed plug-in connection structure

Abstract

The utility model discloses a connector double reed plug-in connection structure, a male end terminal can be inserted in a female end terminal for electrical contact conduction, the female end terminal comprises a female end terminal body and at least two layers of annular female end contact surfaces arranged on the female end terminal body, each layer of female end contact surface is coaxially sleeved, and the female end contact surfaces are arranged on the female end terminal body. The male end terminal comprises a male end terminal body and at least two layers of annular male end contact surfaces arranged on the male end terminal body, the male end contact surfaces are coaxially arranged in a sleeved mode, reeds are fixedly installed on the female end contact surfaces or the male end contact surfaces respectively, elastic contact arms capable of elastically deforming in the radial direction of the reeds are arranged on the reeds, and the elastic contact arms are connected with the female end contact surfaces. According to the utility model, the current transmission area of the female end terminal and the male end terminal is greatly increased, the high-efficiency transmission of large current is realized, and the high-efficiency fast charging requirement of the current charging product can be met.

Description

Technical Field

[0001] The utility model relates to a connector, in particular to a double - reed plug - in connection structure of a connector. Background Art

[0002] For the plug - in conduction structure of a connector, generally, female - end terminals with an annular structure are formed on a female - end connector, and columnar male - end terminals are formed on a male - end connector. When plugging in, conduction is achieved by inserting the male - end terminals into the female - end terminals. In order to improve the contact stability, currently, several wire reeds or elastic - contact - point - provided reeds are generally arranged in the female - end terminals, and the stable conduction between the female - end terminals and the male - end terminals is ensured by the tight contact between the wire reeds or reeds and the circumferential outer sidewall of the male - end terminals.

[0003] Currently, the contact area between the male - end terminals and the female - end terminals is relatively small, which is difficult to meet the demand for large - current transmission. However, with the continuous development of technologies such as fast charging, the requirement for large - current transmission of this type of plug - in connector is getting higher and higher. The traditional plug - in connector structure can no longer meet the demand for efficient large - current transmission. Summary of the Utility Model

[0004] In order to overcome the above defects, the utility model provides a double - reed plug - in connection structure of a connector. The double - reed plug - in connection structure of the connector doubles the contact area between the female - end terminals and the male - end terminals when the connector is plugged in, and can meet the demand for efficient large - current transmission.

[0005] The technical solution adopted by the utility model to solve its technical problems: A double - reed plug - in connection structure of a connector, including female - end terminals made of a conductive material and male - end terminals made of a conductive material. The male - end terminals can be inserted into the female - end terminals and are electrically contacted and conducted with the female - end terminals. The female - end terminals include a female - end terminal body and at least two layers of annular female - end contact surfaces arranged on the female - end terminal body. Each layer of female - end contact surfaces is coaxially sleeved. The male - end terminals include a male - end terminal body and at least two layers of annular male - end contact surfaces arranged on the male - end terminal body. Each layer of male - end contact surfaces is coaxially sleeved. Reed pieces are respectively and fixedly installed on each layer of female - end contact surfaces or each layer of male - end contact surfaces. Elastic contact arms capable of elastically deforming along their radial directions are provided on the reed pieces. The elastic contact arms can elastically press against the female - end contact surfaces and the male - end contact surfaces to ensure the electrical conduction between the female - end contact surfaces and the male - end contact surfaces.

[0006] As a further improvement of the present utility model, a female terminal connection post and a female terminal connection ring are integrally formed on one axial end surface of the female terminal body. The female terminal connection ring is coaxially sleeved outside the female terminal connection post. An inner-layer female terminal contact surface is formed on the outer side surface of the female terminal connection post, and an outer-layer female terminal contact surface is formed on the inner side surface of the female terminal connection ring. A male terminal connection ring is integrally formed on one axial end surface of the male terminal body. An inner-layer male terminal contact surface is formed on the inner side surface of the male terminal connection ring, and an outer-layer male terminal contact surface is formed on the outer side surface of the male terminal connection ring. The male terminal connection ring can be inserted into the annular space between the female terminal connection post and the female terminal connection ring.

[0007] As a further improvement of the present utility model, a circle of female terminal annular positioning grooves is formed on the inner side surface of the female terminal connection ring, and a circle of male terminal annular positioning grooves is formed on the inner side surface of the male terminal connection ring. The reed pieces are respectively fixedly inserted into the female terminal annular positioning grooves and the male terminal annular positioning grooves.

[0008] As a further improvement of the present utility model, an insulating covering member is fixedly installed at the end of the female terminal connection post, and the insulating covering member can completely cover the end surface of the female terminal connection post.

[0009] As a further improvement of the present utility model, a T-shaped card slot with an inner diameter larger than the opening diameter is formed on the end surface of the female terminal connection post. At least two elastic cantilevers are provided on the insulating covering member. Each elastic cantilever can elastically swing along the radial direction of the female terminal connection post. An inverted buckle protrusion is provided at the end of the elastic cantilever. The elastic cantilever and the inverted buckle protrusion at its end are inserted into the T-shaped card slot on the end surface of the female terminal connection post, and the inverted buckle protrusion is accommodated in the inner space with a larger diameter of the T-shaped card slot. The inverted buckle protrusion abuts against the inner step surface of the T-shaped card slot, and the insulating covering member abuts against the outside of the T-shaped card slot and covers the end surface of the female terminal connection post.

[0010] As a further improvement of the present utility model, a female inner connection ring and a female outer connection ring are integrally formed on one axial end surface of the female terminal body. The female outer connection ring is coaxially sleeved outside the female inner connection ring. An inner-layer female terminal contact surface is formed on the inner side surface of the female inner connection ring, and an outer-layer female terminal contact surface is formed on the inner side surface of the female outer connection ring. A male inner connection post and a male outer connection ring are integrally formed on one axial end surface of the male terminal body. The male outer connection ring is coaxially sleeved outside the male inner connection ring. An inner-layer male terminal contact surface is formed on the outer side surface of the male inner connection ring, and an outer-layer male terminal contact surface is formed on the outer side surface of the male outer connection ring. The male inner connection ring can be inserted into the inside of the female inner connection ring, and the male outer connection ring can be inserted into the annular space between the female inner connection ring and the female outer connection ring.

[0011] As a further improvement of the utility model, a circumferential female outer annular positioning groove is formed on the inner side surface of the female outer connection ring, a circumferential female inner annular positioning groove is formed on the inner side surface of the female inner connection ring, and the reed pieces are respectively fixedly inserted into the female outer annular positioning groove and the female inner annular positioning groove.

[0012] As a further improvement of the utility model, a circumferential outer convex retaining ring is provided on the circumferential outer side surface of the male terminal body, and the female terminal abuts against the surface of the outer convex retaining ring.

[0013] As a further improvement of the utility model, each reed piece includes a connecting rib and an elastic contact arm. A frame-shaped structure is formed by the connecting ribs extending along the circumferential direction and the axial direction of the connector and being staggeredly fixedly connected. One end of several elastic contact arms is fixed on the connecting rib extending along the circumferential direction of the connector, and the other end of several elastic contact arms forms a free end. Several elastic contact arms are respectively accommodated in the inner frame of the frame-shaped structure. The elastic contact arms are formed into a female elastic contact point and a male elastic contact point after being bent along the radial direction of the connector for multiple times. The female elastic contact point and the male elastic contact point are respectively in close contact with the female contact surface of the female terminal and the male contact surface of the male terminal.

[0014] As a further improvement of the utility model, the connecting ribs extending along the circumferential direction of the reed piece are three parallel and spaced apart. The elastic contact arms are integrally formed symmetrically on both sides of the middle connecting rib extending along the circumferential direction of the connector. Several axial clamping points are respectively provided on the connecting ribs extending along the circumferential direction of the two sides. The axial clamping points are axially stopped, clamped and positioned with the male terminal or the female terminal.

[0015] The beneficial effect of the utility model is that: by providing an inner-layer female contact surface and an outer-layer female contact surface sleeved inside and outside on the female terminal, and an inner-layer male contact surface and an outer-layer male contact surface sleeved inside and outside on the male terminal in the utility model, when the male terminal is inserted into the female terminal, an inner contact surface and an outer contact surface are formed. The inner contact surface is ensured to be conducted through the elastic contact of the inner-layer reed piece, and the outer contact surface is ensured to be conducted through the elastic contact of the outer-layer reed piece. In this way, the female terminal and the male terminal simultaneously conduct current transmission through the inner contact surface and the outer contact surface synchronously, greatly increasing the current transmission area, realizing high-efficiency transmission of large current, and being able to meet the high-efficiency fast-charging requirements of current charging products. Description of the Drawings

[0016] Figure 1 It is a three-dimensional sectional view of the female terminal and the male terminal of the first structure of the utility model in a separated state;

[0017] Figure 2 It is a three-dimensional sectional view of the female terminal and the male terminal of the first structure of the utility model in a plugged state;

[0018] Figure 3 This is a three-dimensional sectional view of the female terminal of the first structure of the present utility model;

[0019] Figure 4 This is a three-dimensional sectional view of the female terminal and the male terminal of the second structure of the present utility model in a separated state;

[0020] Figure 5 This is a three-dimensional sectional view of the female terminal and the male terminal of the second structure of the present utility model in a plugged state;

[0021] Figure 6 This is a three-dimensional view of the female terminal of the second structure of the present utility model;

[0022] Figure 7 This is a three-dimensional sectional view of the female terminal of the second structure of the present utility model;

[0023] Figure 8 This is a three-dimensional view of the male terminal of the second structure of the present utility model;

[0024] Figure 9 This is a three-dimensional sectional view of the male terminal of the second structure of the present utility model. Detailed implementation manner

[0025] Embodiment: A double spring piece plug-in connection structure for a connector, including a female terminal 1 made of a conductive material and a male terminal 2 made of a conductive material. The male terminal 2 can be inserted into the female terminal 1 and be in electrical contact conduction with the female terminal 1. The female terminal 1 includes a female terminal 1 body and at least two layers of annular female contact surfaces 11 provided on the female terminal 1 body. Each layer of female contact surfaces 11 is coaxially sleeved. The male terminal 2 includes a male terminal 2 body and at least two layers of annular male contact surfaces 21 provided on the male terminal 2 body. Each layer of male contact surfaces 21 is coaxially sleeved. Spring pieces 3 are respectively fixedly installed on each layer of female contact surfaces 11 or each layer of male contact surfaces 21. Elastic contact arms 31 capable of elastically deforming along their radial directions are provided on the spring pieces 3. The elastic contact arms 31 can elastically press against the female contact surfaces 11 and the male contact surfaces 21 to ensure electrical conduction between the female contact surfaces 11 and the male contact surfaces 21.

[0026] During use, the male terminal 2 is inserted into the female terminal 1. Each layer of male contact surfaces 21 of the male terminal 2 is elastically and tightly contacted with each layer of female contact surfaces 11 of the female terminal 1 through the spring pieces 3. This structure realizes a significant increase in the conduction contact area between the male terminal 2 and the female terminal 1 of the plug-in connector. The current is simultaneously transmitted from at least two layers of female contact surfaces 11 connected to the female terminal to at least one layer of male contact surfaces 21 of the male connector, which can achieve high-efficiency large-current transmission between the female terminal 1 and the male terminal 2 and meet the requirements of high-speed charging.

[0027] One end face of the axial direction of the body of the female terminal 1 is integrally formed with a female connection post 12 and a female connection ring 13. The female connection ring 13 is coaxially sleeved outside the female connection post 12. The outer side surface of the female connection post 12 forms an inner female contact surface 11, and the inner side surface of the female connection ring 13 forms an outer female contact surface 11. One end face of the axial direction of the body of the male terminal 2 is integrally formed with a male connection ring 22. The inner side surface of the male connection ring 22 forms an inner male contact surface 21, and the outer side surface of the male connection ring 22 forms an outer male contact surface 21. The male connection ring 22 can be inserted into the annular space between the female connection post 12 and the female connection ring 13. By arranging the female connection post 12 and the female connection ring 13 on the body of the female terminal 1, the inner female contact surface 11 is formed on the outer side surface of the female connection post 12 and the inner side surface of the female connection ring 13 respectively, and the inner side surface and the outer side surface of the male connection ring 22 of the male connector form the male contact surfaces 21 respectively. This structure realizes the contact conduction by two layers of annular contact surfaces when the male connector and the female connector are inserted into each other.

[0028] A circle of female annular positioning grooves 131 is formed on the inner side surface of the female connection ring 13, and a circle of male annular positioning grooves 221 is formed on the inner side surface of the male connection ring 22. The reed pieces 3 are respectively fixedly inserted into the female annular positioning grooves 131 and the male annular positioning grooves 221. By arranging the female annular positioning grooves 131 on the inner side surface of the female connection ring 13 and the male annular positioning grooves 221 on the inner side surface of the male connection ring 22 to respectively accommodate and position the reed pieces 3 between the two layers of male and female contact surfaces 11, the positioning of the reed pieces 3 on the female terminal 1 and the male terminal 2 is ensured to be stable, and they will not fall off with the insertion and extraction of the male terminal, and will not affect the insertion and extraction of the male terminal.

[0029] An insulating covering member 14 is fixedly installed at the end of the female connection post 12, and the insulating covering member 14 can completely cover the surface of the end of the female connection post 12. An insulating covering member 14 (plastic cover) is fixed at the end of the female connection post 12 of the female terminal 1. After the female terminal 1 is fixed in the plastic housing, the insulating covering member 14 (plastic cover) can play the role of IP20 finger protection, avoiding the user from accidentally touching the end of the female connection post 12 and getting an electric shock.

[0030] On the end face of the female terminal connection post 12, a T-shaped card slot 121 with an inner diameter larger than the opening diameter is formed. At least two elastic cantilevers 141 are provided on the insulating cover 14. Each elastic cantilever 141 can elastically swing along the radial direction of the female terminal connection post 12. An inverted buckle protrusion 142 is provided at the end of the elastic cantilever 141. The elastic cantilever 141 and the inverted buckle protrusion 142 at its end are inserted into the T-shaped card slot 121 on the end face of the female terminal connection post 12, and the inverted buckle protrusion 142 is accommodated in the inner space with a larger diameter of the T-shaped card slot 121. The inverted buckle protrusion 142 is blocked by the inner stepped surface of the T-shaped card slot 121, and the insulating cover 14 is blocked by the outside of the T-shaped card slot 121 and covers the end face of the female terminal connection post 12.

[0031] The insulating cover 14 is snap-connected to the T-shaped card slot 121 on the female terminal connection post 12 through the inverted buckle protrusion 142 at the end of the elastic cantilever 141, which facilitates the assembly of the insulating cover 14. In addition, the insulating cover 14 can also be fixed on the end face of the female terminal connection post 12 by in-mold injection or bonding. Such equivalent replacement structures are easily conceivable by those skilled in the art according to this patent and belong to the protection scope of this patent.

[0032] On one axial end face of the female terminal 1 body, a female inner connection ring 15 and a female outer connection ring 16 are integrally formed. The female outer connection ring 16 is coaxially sleeved outside the female inner connection ring 15. The inner side surface of the female inner connection ring 15 forms an inner-layer female contact surface 11, and the inner side surface of the female outer connection ring 16 forms an outer-layer female contact surface 11. On one axial end face of the male terminal 2 body, a male inner connection post 23 and a male outer connection ring 24 are integrally formed. The male outer connection ring 24 is coaxially sleeved outside the male inner connection ring. The outer side surface of the male inner connection ring forms an inner-layer male contact surface 21, and the outer side surface of the male outer connection ring 24 forms an outer-layer male contact surface 21. The male inner connection ring can be inserted into the inside of the female inner connection ring 15, and the male outer connection ring 24 can be inserted into the annular space between the female inner connection ring 15 and the female outer connection ring 16. By providing the female inner connection ring 15 and the female outer connection ring 16 on the female terminal 1 body of this structure of the female connector, and then forming female contact surfaces 11 on the inner side surface of the female inner connection ring 15 and the inner side surface of the female outer connection ring 16 respectively, and providing the male inner connection post 23 and the male outer connection ring 24 on the male terminal 2 body of the male connector, and then forming male contact surfaces 21 on the outer side surface of the male inner connection post 23 and the outer side surface of the male outer connection ring 24 respectively, this structure realizes the contact conduction by two layers of annular contact surfaces when the male connector and the female connector are inserted into each other.

[0033] On the inner side surface of the female terminal outer connection ring 16, a circle of female terminal outer annular positioning grooves 161 is formed. On the inner side surface of the female terminal inner connection ring 15, a circle of female terminal inner annular positioning grooves 151 is formed. The reed pieces 3 are respectively fixedly inserted into the female terminal outer annular positioning grooves 161 and the female terminal inner annular positioning grooves 151.

[0034] On the circumferential outer side surface of the male terminal 2 body, a circle of outward convex retaining rings 25 is provided. The female terminal 1 abuts against the surface of the outward convex retaining ring 25.

[0035] After the male terminal 2 is inserted into the female terminal 1 for a certain distance, the female terminal 1 will abut against the surface of the outward convex retaining ring 25 of the male terminal 2 and cannot be inserted further, avoiding over-insertion. At the same time, it can also play a role in closing the gap between the male terminal 2 and the female terminal 1.

[0036] Each of the reed pieces 3 includes a connecting rib 32 and an elastic contact arm 31. A frame-shaped structure formed by the connecting ribs 32 extending along the circumferential direction and the axial direction of the connector is fixedly connected in an alternating manner. One end of a plurality of elastic contact arms 31 is fixed to the connecting rib 32 extending along the circumferential direction of the connector. The other ends of the plurality of elastic contact arms 31 form free ends. The plurality of elastic contact arms 31 are respectively accommodated in the inner frame of the frame-shaped structure. The elastic contact arms 31 are formed into female terminal elastic contact points and male terminal elastic contact points after being bent multiple times along the radial direction of the connector. The female terminal elastic contact points and the male terminal elastic contact points are respectively in close contact with the female terminal contact surface 11 of the female terminal 1 and the male terminal contact surface 21 of the male terminal 2.

[0037] The reed pieces 3 can be formed by stamping a steel sheet into a sheet material with elastic contact arms 31, and then curled into an annular columnar structure. After being installed into the annular positioning grooves of each contact surface, it automatically tightens and is stuck in the annular positioning grooves. The connecting rib 32 becomes a structure for positioning and manufacturing with the annular positioning grooves. The female terminal elastic contact points and the male terminal elastic contact points on the elastic contact arms 31 are respectively in contact and conduction with the female terminal contact surface 11 and the male terminal contact surface 21. The female terminal elastic contact points and the male terminal elastic contact points can be located on the same elastic contact arm 31 at the same time, or on two different elastic contact arms 31, that is, one elastic contact arm 31 forms the female terminal elastic contact point and the male terminal elastic contact point through repeated bending, or one elastic contact arm 31 is bent to form the female terminal elastic contact point, and an adjacent elastic contact arm 31 is bent to form the male terminal elastic contact point. This is very easy for those skilled in the art to think of according to this application and all belong to the protection scope of this application.

[0038] The connecting ribs 32 extending along the circumferential direction of the connector on the spring 3 are three parallel and spaced apart. The elastic contact arms 31 are symmetrically formed integrally on both sides of the connecting rib 32 extending along the circumferential direction of the connector in the middle. The connecting ribs 32 extending along the circumferential direction of the connector on both sides are respectively provided with a plurality of axial clamping points 33, which are axially stopped and clamped with the male terminal 2 or the female terminal 1 for positioning. The elastic contact arm 31 is preferably a V-shaped structure with the opening direction facing the bottom surface of each annular positioning groove, and a small reverse bend and tilting is formed at its end, so that the male end can be smoothly inserted and removed without damaging the female end, and the elastic contact arm 31 can be smoothly stretched and deformed.

Claims

1. A double spring piece plug-in connection structure for a connector, comprising a female terminal (1) made of a conductive material and a male terminal (2) made of a conductive material. The male terminal can be inserted into the female terminal and is in electrical contact and conduction with the female terminal. It is characterized in that: The female terminal includes a female terminal body and at least two layers of annular female contact surfaces (11) provided on the female terminal body. Each layer of female contact surfaces is coaxially sleeved. The male terminal includes a male terminal body and at least two layers of annular male contact surfaces (21) provided on the male terminal body. Each layer of male contact surfaces is coaxially sleeved. Spring pieces (3) are respectively fixedly installed on each layer of female contact surfaces or each layer of male contact surfaces. Elastic contact arms (31) capable of elastically deforming along their radial directions are provided on the spring pieces. The elastic contact arms can elastically abut against the female contact surfaces and the male contact surfaces to ensure electrical conduction between the female contact surfaces and the male contact surfaces.

2. The double-spring plug-in connection structure of the connector according to claim 1, characterized in that: A female connection column (12) and a female connection ring (13) are integrally formed on one axial end surface of the female terminal body. The female connection ring is coaxially sleeved outside the female connection column. The outer side surface of the female connection column forms an inner-layer female contact surface, and the inner side surface of the female connection ring forms an outer-layer female contact surface. A male connection ring (22) is integrally formed on one axial end surface of the male terminal body. The inner side surface of the male connection ring forms an inner-layer male contact surface, and the outer side surface of the male connection ring forms an outer-layer male contact surface. The male connection ring can be inserted into the annular space between the female connection column and the female connection ring.

3. The plug-in connection structure of the double reed of the connector according to claim 2, characterized in that: A circle of female annular positioning grooves (131) is formed on the inner side surface of the female connection ring. A circle of male annular positioning grooves (221) is formed on the inner side surface of the male connection ring. The spring pieces are respectively fixedly inserted into the female annular positioning grooves and the male annular positioning grooves.

4. The connector double spring piece insertion connection structure according to claim 2, characterized in that: An insulating covering member (14) is fixedly installed at the end of the female connection column. The insulating covering member can completely cover the surface of the end of the female connection column.

5. The double spring piece butt-joint connection structure of the connector according to claim 4, characterized in that: A T-shaped card slot (121) with an inner diameter larger than the opening diameter is formed on the end surface of the female connection column. At least two elastic cantilevers (141) are provided on the insulating covering member. Each elastic cantilever can elastically swing along the radial direction of the female connection column. An inverted buckle protrusion (142) is provided at the end of the elastic cantilever. The elastic cantilever and the inverted buckle protrusion at its end are inserted into the T-shaped card slot on the end surface of the female connection column, and the inverted buckle protrusion is accommodated in the inner space with a larger diameter of the T-shaped card slot. The inverted buckle protrusion abuts against the inner step surface of the T-shaped card slot, and the insulating covering member abuts against the outside of the T-shaped card slot and covers the end surface of the female connection column.

6. The double cantilever spring plug-in connection structure of the connector according to claim 1, characterized in that: One end surface of the female terminal body in the axial direction is integrally formed with a female inner connecting ring (15) and a female outer connecting ring (16). The female outer connecting ring is coaxially sleeved outside the female inner connecting ring. The inner side surface of the female inner connecting ring forms an inner-layer female contact surface, and the inner side surface of the female outer connecting ring forms an outer-layer female contact surface. One end surface of the male terminal body in the axial direction is integrally formed with a male inner connecting post (23) and a male outer connecting ring (24). The male outer connecting ring is coaxially sleeved outside the male inner connecting ring. The outer side surface of the male inner connecting ring forms an inner-layer male contact surface, and the outer side surface of the male outer connecting ring forms an outer-layer male contact surface. The male inner connecting ring can be inserted inside the female inner connecting ring, and the male outer connecting ring can be inserted into the annular space between the female inner connecting ring and the female outer connecting ring.

7. The plug-in connection structure of the double reed of the connector according to claim 6, characterized in that: A circle of female outer annular positioning grooves (161) is formed on the inner side surface of the female outer connecting ring, and a circle of female inner annular positioning grooves (151) is formed on the inner side surface of the female inner connecting ring. The reed pieces are respectively fixedly inserted into the female outer annular positioning grooves and the female inner annular positioning grooves.

8. The plug-in connection structure of the double spring pieces of the connector according to claim 1, characterized in that: An outer convex retaining ring (25) is provided on the circumferential outer side surface of the male terminal body, and the female terminal abuts against the surface of the outer convex retaining ring.

9. The connector double spring piece insertion connection structure according to claim 1, 3 or 7, characterized in that: Each of the reed pieces includes a connecting rib (32) and an elastic contact arm. A frame-shaped structure is formed by the connecting ribs extending along the circumferential direction and the axial direction of the connector and being fixedly connected in an alternating manner. One end of several elastic contact arms is fixed to the connecting rib extending along the circumferential direction of the connector, and the other end of several elastic contact arms forms a free end. Several elastic contact arms are respectively accommodated in the inner frame of the frame-shaped structure. The elastic contact arms are formed into female elastic contact points and male elastic contact points after being bent multiple times along the radial direction of the connector. The female elastic contact points and the male elastic contact points are respectively in close contact with the female contact surface of the female terminal and the male contact surface of the male terminal.

10. The connector double spring piece plug-in connection structure according to claim 9, characterized in that: The connecting ribs extending along the circumferential direction of the connector on the reed piece are three parallel and spaced apart. The elastic contact arms are integrally formed symmetrically on both sides of the middle connecting rib extending along the circumferential direction of the connector. Several axial clamping points (33) are respectively provided on the connecting ribs extending along the circumferential direction of the connector on both sides. The axial clamping points are axially locked and clamped with the male terminal or the female terminal for positioning.

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