Conductive terminal

By setting up vertical limiting structures on the conductive terminals, the problem of unstable connection caused by the opening of the side plates is solved, material consumption is saved, and the effects of stable electrical conduction and compact structure are achieved.

CN223828751UActive Publication Date: 2026-01-23HUILI ELECTRONIC TECH (NINGBO) CO LTD
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Patent Information

Application Number
CN202423260296.9
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2024-12-27
Publication Date
2026-01-23
Estimated Expiration
2034-12-27

AI Technical Summary

Technical Problem

The two side plates of the existing conductive terminals are prone to opening during transportation, which prevents the mounting feet from connecting and conducting with the circuit board. In addition, the existing limiting structure increases material consumption.

Method used

The first and second limiting parts extend in the vertical direction and restrict the opening of the side plate by snapping together, ensuring a stable connection between the mounting feet and the circuit board, and saving materials without increasing the length of the conductive terminals.

Benefits of technology

Stable electrical conduction between the conductive terminals and the circuit board was achieved, avoiding material waste and maintaining the compact structure of the conductive terminals.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model discloses a conductive terminal, which is used for butting a butting piece and electrically conducting with a circuit board, and comprises a top plate, a first side plate and a second side plate which are formed by bending and extending downwards from the front side and the rear side of the top plate respectively, and a first contact arm and a second contact arm which are arranged between the first side plate and the second side plate and used for clamping the butting piece together, the side edge of the first side plate in the left-right direction extends outwards to form an extending part, one end of the extending part in the up-down direction is connected with a first limiting part, the first limiting part bends and extends towards the second side plate, and the extending length of the first limiting part does not exceed the total length of the first side plate and the second side plate in the up-down direction. The side edge of the second side plate in the left-right direction extends outwards to form a second limiting part, the first limiting part is buckled to the second limiting part, the second limiting part is prevented from moving in the direction away from the extending part, and a first installation pin at the lower end of the first side plate and a second installation pin at the lower end of the second side plate are connected and conducted with the circuit board. And the manufacturing material of the conductive terminal is saved.
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Description

[Technical Field]

[0001] This utility model relates to a conductive terminal, and more particularly to a conductive terminal that can save manufacturing materials. [Background Technology]

[0002] A conductive terminal has a top plate and two side plates that bend and extend from the left and right sides of the top plate. Each side plate has a mounting foot connected to its bottom end for electrical connection with a circuit board. However, since there is no limiting element between the two side plates to limit their movement, the ends of the two side plates away from the top plate tend to open up during the transportation of the conductive terminal. This causes the mounting feet on the two side plates to move away from each other, resulting in the mounting feet on the two side plates being unable to connect and conduct with the circuit board. Consequently, the signal transmission between the conductive terminal and the circuit board becomes unstable.

[0003] To address the issue of the two side plates of the aforementioned conductive terminal easily opening, preventing the mounting feet on the side plates from connecting to the circuit board, another conductive terminal has been designed. This new terminal features a first and second side plate arranged opposite each other in the front-to-back direction. Mounting feet extend from the lower ends of both the first and second side plates. A limiting portion extends from the left-to-right edge of the first side plate towards the second side plate, and the end of the limiting portion away from the first side plate engages with the second side plate. This prevents the first and second side plates from opening, thus avoiding the problem of the mounting feet failing to connect to the circuit board. However, Because the limiting part in the existing technology is bent and extended directly from one edge of the first side plate in the left-right direction toward the second side plate, before the conductive terminal is bent and formed, the limiting part extends along the left-right direction and is connected to one edge of the first side plate in the left-right direction in the unfolded state. Moreover, in order to ensure that the limiting part can be engaged with the second side plate when bent, the length of the limiting part extending in the left-right direction must be long enough. This results in the conductive terminal being relatively long in the left-right direction. As a result, a large metal sheet is required when stamping the conductive terminal, which easily wastes material.

[0004] Therefore, it is necessary to design a conductive terminal that saves on manufacturing materials to solve the above-mentioned technical problems. [Utility Model Content]

[0005] To solve the above-mentioned technical problems, the purpose of this utility model is to provide a conductive terminal that limits the first side plate and the second side plate by connecting the extension part, the first limiting part and the second limiting part, so as to prevent the first side plate and the second side plate from opening up to each other, and to ensure that the first mounting foot and the second mounting foot are stably electrically connected to the circuit board. At the same time, the first limiting part extends in the vertical direction, so the conductive terminal will not be too long in the horizontal direction due to the addition of the first limiting part. Before the conductive terminal is bent, the first limiting part is set parallel to the first side plate, so that the overall unfolded structure of the conductive terminal is more compact, thereby saving manufacturing materials.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] This utility model provides a conductive terminal for connecting to a mating component and being electrically connected to a circuit board, comprising:

[0008] The top plate is bent downwards from the front and rear sides to form the first side plate and the second side plate, respectively.

[0009] A first contact arm and a second contact arm that extend relative to each other are provided between the first side plate and the second side plate. The first contact arm and the second contact arm are used to jointly clamp the docking parts.

[0010] The lower end of the first side plate extends with a first mounting foot, and an extension extends outward from at least one edge of the first side plate in the left-right direction. In the up-down direction, the extension is located on the side close to the first mounting foot. At least one end of the extension in the up-down direction is connected to a first limiting part, and the first limiting part bends and extends toward the second side plate. The length of the first limiting part does not exceed the total length of the first side plate and the second side plate in the up-down direction.

[0011] The lower end of the second side plate extends with a second mounting foot, and at least one edge of the second side plate extends outward in the left-right direction with a second limiting part. In the up-down direction, the second limiting part is located on the side close to the second mounting foot. The first limiting part is engaged with the second limiting part to prevent the second limiting part from displacing in a direction away from the extension, thereby making the first mounting foot and the second mounting foot stably connected and conductive with the circuit board.

[0012] Furthermore, two first mounting feet extend from the lower left and right sides of the first side plate, and an extension extends outward from the left and right edges of the first side plate. The upper ends of the two extensions are integrally connected to the first limiting parts, and the plate surfaces of the two first limiting parts are parallel to the plate surface of the top plate. Two second mounting feet extend from the lower left and right sides of the second side plate, and two second limiting parts extend outward from the left and right edges of the second side plate corresponding to the two first limiting sections. The lower end surfaces of the two extensions are flush with the lower end surfaces of the two second limiting parts, wherein the two first limiting parts are respectively fastened to the two second limiting parts.

[0013] Furthermore, the first limiting part has a connecting section connected to the extension part, and two stop sections that bend downward from the end of the connecting section away from the extension part. The two stop sections stop on the side of the second limiting part away from the extension part, and the two stop sections are spaced apart in the left and right direction. The second limiting part has a protrusion extending upward, and the protrusion is limited between the two stop sections in the left and right direction. The end of the connecting section away from the extension part stops the protrusion from displacing toward the side of the extension part.

[0014] Furthermore, the length of the extension in the left-right direction is equal to the length of the second limiting part in the left-right direction, and less than the distance between the first side plate and the second side plate in the front-back direction. The width of the first limiting part in the left-right direction is less than the length of the extension in the left-right direction. There is a gap between the first limiting part and the first side plate in the left-right direction, and the side edge of the first limiting part away from the first side plate is flush with the side edge of the extension away from the first side plate.

[0015] Furthermore, the outer edge of the first mounting foot along the left-right direction is aligned with the edge of the first side plate along the up-down direction, and the outer edge of the second mounting foot along the left-right direction is aligned with the edge of the second side plate along the up-down direction. Both the first and second mounting feet are soldered to the circuit board to form electrical conductivity.

[0016] Furthermore, an insertion interface is provided through the top plate in the vertical direction for the docking component to be inserted downward from the insertion interface between the first contact arm and the second contact arm. The first side plate has a first opening, and the first contact arm extends downward from the upper wall of the first opening toward the second side plate. The first contact arm has a first contact portion exposed in the insertion interface. The second side plate has a second opening, and the second contact arm extends downward from the upper wall of the second opening toward the first side plate. The second contact arm has a second contact portion exposed in the insertion interface. The first contact portion and the second contact portion together clamp the docking component.

[0017] Furthermore, the first contact arm has a first extension section that bends downward from the upper wall of the first opening, and a second extension section that bends downward from the lower end of the first extension section and toward the second side plate. A first contact portion is formed by bending and extending from the second extension section toward the first side plate. The second contact arm has a third extension section that bends downward from the upper wall of the second opening, and a fourth extension section that bends downward from the lower end of the third extension section and toward the first side plate. A second contact portion is formed by bending and extending from the fourth extension section toward the second side plate.

[0018] Furthermore, a first abutting arm extends upward from the lower end of the first side plate and bends toward the second side plate, with the upper end of the first abutting arm bent to form a first abutting portion. A second abutting arm extends upward from the lower end of the second side plate and bends toward the first side plate, with the upper end of the second abutting arm bent to form a second abutting portion. The mating member is inserted downward from the insertion port between the first contact arm and the second contact arm. The first abutting portion abuts against the side of the first contact portion away from the mating member, and the second abutting portion abuts against the side of the second contact portion away from the mating member.

[0019] Furthermore, the first contact arm extends upward from the lower end of the first side plate and bends toward the second side plate, with the upper end of the first contact arm bending to form a first contact portion. The second contact arm extends upward from the lower end of the second side plate and bends toward the first side plate, with the upper end of the second contact arm bending to form a second contact portion. The first side plate has a first opening, and a first abutting arm extends downward from the upper wall of the first opening and bends toward the second side plate, with the lower end of the first abutting arm bending to form a first abutting portion. The second side plate has a second opening, and a second abutting arm extends downward from the upper wall of the second opening and bends toward the first side plate, with the lower end of the second abutting arm bending to form a second abutting portion. The mating member is inserted upward from the opening of the circuit board between the first contact arm and the second contact arm. The first contact portion and the second contact portion clamp the mating member in the front-rear direction. The first abutting portion abuts against the side of the first contact portion away from the mating member, and the second abutting portion abuts against the side of the second contact portion away from the mating member.

[0020] This utility model provides another conductive terminal for mating with a mating component and electrically communicating with a circuit board, the circuit board having at least two mutually spaced conductive vias, including:

[0021] The top plate is bent downwards from the front and rear sides to form the first side plate and the second side plate, respectively.

[0022] A first contact arm and a second contact arm that extend relative to each other are provided between the first side plate and the second side plate. The first contact arm and the second contact arm are used to jointly clamp the docking parts.

[0023] The lower end of the first side plate extends with a first mounting foot, and an extension extends outward from at least one edge of the first side plate in the left-right direction. In the up-down direction, the extension is located on the side close to the first mounting foot. At least one end of the extension in the up-down direction is connected to a first limiting part, and the first limiting part bends and extends toward the second side plate.

[0024] The lower end of the second side plate extends with a second mounting foot, and at least one edge of the second side plate extends outward in the left-right direction with a second limiting part. In the up-down direction, the second limiting part is located on the side close to the second mounting foot. The first limiting part is engaged with the second limiting part to prevent the second limiting part from displacing in a direction away from the extension, so that the first mounting foot is inserted into a conductive through hole on the circuit board and soldered to form electrical continuity, and the second mounting foot is inserted into another conductive through hole on the circuit board and soldered to form electrical continuity.

[0025] Compared with the prior art, the conductive terminal designed in this utility model has the following advantages:

[0026] The first and second side plates are formed by bending downwards from the front and rear sides of the top plate, respectively. An extension portion extends outwards from at least one edge of the first side plate in the left-right direction. In the vertical direction, the extension portion is located near the first mounting foot. At least one end of the extension portion in the vertical direction is connected to a first limiting portion, which bends towards the second side plate. A second limiting portion extends outwards from at least one edge of the second side plate in the left-right direction. In the vertical direction, the second limiting portion is located near the second mounting foot. The first limiting portion engages with the second limiting portion to prevent the second limiting portion from displacing away from the extension portion, thus preventing the first and second side plates from easily opening and deforming apart in the front-rear direction, and thus preventing the first and second mounting feet from easily shifting apart in the front-rear direction. This opening ensures a stable connection and conduction between the first and second mounting pins and the circuit board, achieving stable electrical conduction between the conductive terminals and the circuit board. Furthermore, the first limiting part extends vertically, not horizontally. That is, both the first limiting part and the first side plate extend vertically. Since the first side plate itself is relatively long vertically, the length of the first limiting part extending vertically will not exceed the total length of the first and second side plates in the vertical direction. In this way, the conductive terminal will not become too long due to the addition of the first limiting part. Before bending, the first limiting part and the first side plate are set parallel to each other, making the overall planar unfolded structure of the conductive terminal more compact. This avoids increasing the size of the metal sheet used to manufacture the conductive terminal and saves manufacturing materials. [Attached Image Description]

[0027] Figure 1 This is a perspective view of the connection between the conductive terminal and the circuit board of this utility model;

[0028] Figure 2 for Figure 1 Enlarged view at point A;

[0029] Figure 3 This is a top view of the conductive terminal of this utility model;

[0030] Figure 4 for Figure 3 Cross-sectional view at point AA;

[0031] Figure 5 This is a schematic diagram of the connection between the conductive terminal and the mating component of this utility model;

[0032] Figure 6 for Figure 1 The right view;

[0033] Figure 7 This is an unfolded view of the conductive terminal of this utility model;

[0034] Figure 8 This is a schematic diagram of the connection between the conductive terminal and the mating member according to another embodiment of the present invention.

[0035] Explanation of reference numerals in the accompanying drawings for the specific implementation methods:

[0036]

[0037]

Detailed Implementation Methods

[0038] To better understand the content of this utility model, a more detailed description of this utility model will now be provided in conjunction with specific implementation schemes and illustrations.

[0039] In the description of this utility model, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the indicated position or component must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0040] like Figure 1 As shown, the conductive terminal 100 of this utility model is used to connect and conduct electricity with a docking element to realize the transmission of electrical energy or signals. The docking element can be a circuit board 4. The extension direction of the side plate of the conductive terminal 100 is defined as the up-down direction, the up-down direction is the Z-axis, the upward direction is the positive Z-axis direction, the front-back direction is the X-axis, the forward direction is the positive X-axis direction, the left-right direction is the Y-axis, and the rightward direction is the positive Y-axis direction. For ease of description, the up-down, left-right, and front-back directions in this utility model are relative positions and do not constitute a limitation on the implementation.

[0041] like Figure 1As shown, the conductive terminal 100 is used to connect to a mating member 5 and is electrically connected to the circuit board 4. The circuit board 4 has at least two mutually spaced conductive through holes 41 (in this embodiment, the number of conductive through holes 41 is four; in other embodiments, the number of conductive through holes 41 can also be three, five, six, etc.). The conductive through holes 41 are used for the insertion of the mounting pins of the conductive terminal 100 to achieve the connection and conduction between the conductive terminal 100 and the circuit board 4. The conductive terminal 100 includes a top plate 1, and a first side plate 2 and a second side plate 3 formed by bending downwards on opposite sides in the front-rear direction of the top plate 1. A first contact arm 26 and a second contact arm 34 extending oppositely are provided between the first side plate 2 and the second side plate 3. The first contact arm 26 and the second contact arm 34 are used to jointly clamp the mating member 5.

[0042] like Figure 1 As shown, the top plate 1 has an insertion interface 11 that extends through the top plate 1 in the vertical direction, and the docking member 5 is inserted into the insertion interface 11 from top to bottom. Guide pieces 12 extend downward along the front and rear inner walls of the insertion interface 11, and the guide pieces 12 are used to guide the docking member 5 into the conductive terminal 100.

[0043] like Figure 1 , Figure 2 and Figure 4 As shown, the lower end of the first side plate 2 extends with a first mounting foot 21 for connecting and conducting with a mating part inserted into the circuit board 4. The outer edge of one side of the first mounting foot 21 in the left-right direction is aligned with one edge of the first side plate 2 in the up-down direction, thereby saving material. Specifically, the connection can be achieved by welding, crimping, or snap-fitting. In this embodiment, the first mounting foot 21 is needle-shaped, and there are two first mounting feet 21. The two first mounting feet 21 are respectively inserted into the two conductive through holes 41 of the circuit board 4 and welded to the circuit board 4 to form an electrical connection. In other embodiments, the lower end of the first mounting foot 21 is bent in the front-back direction, and the circuit board 4 is provided with a conductive sheet (not shown, the same below) for the first mounting foot 21 to connect to. The first mounting foot 21 and the conductive sheet are flatly welded to achieve electrical conduction. The lower end of the first side plate 2 extends downward with a stop portion 28. The length of the stop portion 28 extending downward is less than the length of the first mounting foot 21 extending downward. When the conductive terminal 100 is fixed on the circuit board 4, the lower surface of the stop portion 28 is used to support the upper surface of the circuit board 4, so that the depth of the first mounting foot 21 inserted into the circuit board 4 can be controlled.

[0044] like Figure 1 , Figure 3 , Figure 4 , Figure 7As shown, the first side plate 2 extends outward from at least one edge in the left-right direction with an extension portion 22. In the up-down direction, the extension portion 22 is located on the side closer to the first mounting foot 21. The extension portion 22 is closer to the first mounting foot 21, so that the first limiting portion 23 connected to the extension portion 22 and the second limiting portion 32 connected to the first limiting portion 23 are also closer to the mounting foot, thereby providing a better limiting effect on the mounting foot. Specifically, the lower end of the extension portion 22 can be aligned with the lower end of the first side plate 2. The extension 22 is connected to a first limiting part 23 at at least one end in the vertical direction, and the first limiting part 23 bends and extends toward the second side plate 3. The first limiting part 23 is fastened to the corresponding second limiting part 32 on the second side plate 3, preventing the second limiting part 32 from displacing away from the extension 22. This makes it difficult for the first side plate 2 and the second side plate 3 to open and deform with each other, thereby making it difficult for the mounting feet on the two side plates to open and deform with each other. The plane of the first limiting part 23 is parallel to the plane of the top plate 1, so as to avoid the first limiting part 23 tilting and affecting the limiting effect of the first limiting part 23 on the first side plate 2 and the second side plate 3. The first limiting part 23 is longitudinally elongated, and the length of the first limiting part 23 does not exceed the total length of the first side plate 2 and the second side plate 3 in the vertical direction. It is understandable that before the first limiting part 23 is bent, the plane of the first limiting part 23 is parallel to the plane of the first side plate 2. After the first limiting part 23 is bent, the plane of the first limiting part 23 is parallel to the plane of the top plate 1. In this embodiment, the upper end of the extension 22 is connected to the first limiting part 23. The connection of the first limiting part 23 to the upper end of the extension 22 can prevent the first limiting part 23 from falling due to gravity and increase the connection stability between the first limiting part 23 and the second limiting part 32. In other embodiments, the first limiting part 23 is connected to the lower end of the extension 22. In this embodiment, each of the two edges of the first side plate 2 in the left and right directions extends outward with an extension 22. Both extensions 22 are connected to the first limiting part 23. The planes of the two first limiting parts 23 are parallel to the plane of the top plate 1, and the two first limiting parts 23 are aligned in the left and right directions, so that the left and right sides of the first side plate 2 are subjected to uniform force. In other embodiments, the two sides of the first side plate 2 in the left and right directions may each have a plurality of extension portions 22 extending outward, and each of the plurality of extension portions 22 is connected to a first limiting portion 23.

[0045] like Figure 1 , Figure 2 , Figure 3As shown, the first limiting part 23 has a connecting section 231 connected to the extension part 22, and two stop sections 232 extending downward from the end of the connecting section 231 away from the extension part 22. The two stop sections 232 stop the second limiting part 32 on the side away from the extension part 22, and the two stop sections 232 are spaced apart in the left-right direction, which facilitates the confinement of the protrusion 321 of the second limiting part 32 between the two stop sections 232, making the connection between the first limiting part 23 and the second limiting part 32 more stable. The width of the first limiting part 23 in the left-right direction is less than the length of the extension part 22 in the left-right direction, and less than the distance between the first side plate 2 and the second side plate 3 in the front-back direction, so as to avoid the width of the first limiting part 23 in the left-right direction being too long and wasting the manufacturing area of ​​the conductive terminal 100. There is a gap 24 between the first limiting part 23 and the first side plate 2 in the left-right direction, and the side edges of the first limiting part 23 away from the first side plate 2 and the side edges of the extension part 22 away from the first side plate 2 are flush. In this embodiment, the extension 22 is connected to a first limiting part 23 at its upper end. The width of the first limiting part 23 in the left-right direction is less than the length of the first limiting part 23 in the front-back direction. In this embodiment, the length of the first limiting part 23 in the front-back direction can be set to be less than or equal to the distance between the first limiting part 23 and the top plate 1 in the up-down direction, so as to avoid the first limiting part 23 affecting the bending of the first side plate 2 and facilitate the bending of the first side plate 2.

[0046] like Figure 1 , Figure 4 , Figure 5As shown, in this embodiment, a connector 11 is provided through the top plate 1 in a vertical direction for the docking member 5 to be inserted downwards from the connector 11 between the first contact arm 26 and the second contact arm 34. The first side plate 2 has a first opening 25. The first contact arm 26 extends downwards from the upper wall of the first opening 25 toward the second side plate 3. The first contact arm 26 has a first extension 261 extending downwards from the upper wall of the first opening 25, and a second extension 262 extending downwards from the lower end of the first extension 261 toward the second side plate 3. The lower end of the first contact arm 26 is bent to form a first contact portion 263, that is, the first contact portion 263 is formed by bending and extending from the second extension 262 toward the first side plate 2. The first contact portion 263 is exposed in the connector 11 and is used to clamp the docking member 5 together with the second contact portion 343. In this embodiment, the first extension segment 261 is vertical and aligned with the first side plate 2, such that the angle between the top surface of the top plate 1 and the flat plate of the first extension segment 261 is greater than or equal to 90 degrees, and the angle between the flat plate of the first extension segment 261 and the flat plate of the second extension segment 262 is greater than 90 degrees. In this embodiment, the upper wall of the first opening 25 extends downward toward the second side plate 3 with two first contact arms 26, which are aligned in the left-right direction. The lower end of the first side plate 2 extends upward toward the second side plate 3 with a first abutting arm 27. The end of the first abutting arm 27 away from the first side plate 2 overlaps with the end of the first contact arm 26 away from the top plate 1 in the front-back direction. The upper end of the first abutting arm 27 is bent to form a first abutting portion 271. When the docking member 5 is inserted into the conductive terminal 100, the first abutting portion 271 abuts against the first contact portion 263, making the connection between the first contact arm 26 and the docking member 5 more stable. In this embodiment, the lower end of the first side plate 2 bends upward and extends toward the second side plate 3, with two first abutting arms 27. The two first abutting arms 27 are aligned in the left-right direction, and the ends of the two first abutting arms 27 away from the first side plate 2 overlap with the ends of the two first contact arms 26 away from the top plate 1 in the front-back direction. When the docking member 5 is inserted downward from the insertion interface 11 into the conductive terminal 100, the two first abutting portions 271 abut against the sides of the two first contact portions 263 away from the docking member 5. In this embodiment, the length of the first abutting arm 27 extending downward along the first side plate 2 is less than the length of the stop portion 28 extending downward along the first side plate 2. When the conductive terminal 100 is fixed on the circuit board 4, there is a gap between the first abutting arm 27 and the circuit board 4 in the up-down direction, which can prevent the first abutting arm 27 from abutting against the circuit board 4 and affecting the elasticity of the first abutting arm 27.In this embodiment, the first opening 25 extends from the first side plate 2 to the top plate 1. The first contact arm 26 is integrally connected to the front edge of the top plate 1. The first side plate 2 consists of side walls located on the left and right sides of the first opening 25 and a bottom wall located below the first opening 25 and connected to the two side walls. The two side walls are connected to the front edge of the top plate 1, and two first mounting feet 21 extend from the bottom ends of the bottom wall below the two side walls. The first abutting arm 27 extends upward from the bottom end of the bottom wall between the two first mounting feet 21 and bends towards the second side plate 3. A stop portion 28 provided on the first side plate 2 extends downward from the bottom wall of the first side plate 2, and the stop portion 28 is located between the first abutting arm 27 and the first mounting feet 21 in the left-right direction. In other embodiments, the first opening 25 is located in the first side plate 2, and the first contact arm 26 is integrally connected to the first side plate 2.

[0047] like Figure 1 , Figure 2 , Figure 6 As shown, the lower end of the second side plate 3 extends with a second mounting foot 31 for connection and conduction with the mating parts on the circuit board 4. The outer edge of the second mounting foot 31 along the left-right direction is aligned with one edge of the second side plate 3 along the up-down direction, thereby saving material. In this embodiment, the second mounting foot 31 has the same shape as the first mounting foot 21, both being needle-shaped, and there are also two second mounting feet 31. The four conductive holes 41 on the circuit board 4 correspond one-to-one with the two first mounting feet 21 and the two second mounting feet 31. The first mounting feet 21 and the second mounting feet 31 are inserted into the conductive holes 41 of the circuit board 4 and soldered to the circuit board 4 to form an electrical connection, realizing the connection and conduction between the conductive terminal 100 and the circuit board 4. In other embodiments, the lower ends of the second mounting foot 31 and the first mounting foot 21 are bent along the front-back direction. The circuit board 4 is provided with conductive plates for the mounting feet to connect. The conductive plates correspond to the first mounting feet 21 and the second mounting feet 31. The first mounting feet 21 and the second mounting feet 31 are respectively soldered flat to the conductive plates to achieve electrical conduction. The lower end of the second side plate 3 also has a downwardly extending stop portion 28. The downward extension length of the stop portion 28 is less than the downward extension length of the first mounting foot 21 and the second mounting foot 31. When the conductive terminal 100 is fixed on the circuit board 4, the lower surface of the stop portion 28 is used to support the upper surface of the circuit board 4, so that the depth of the mounting foot inserted into the circuit board 4 can be controlled. Furthermore, the lengths of the stop portion 28 at the lower end of the first side plate 2 and the stop portion 28 at the lower end of the second side plate 3 in the vertical direction are equal, which prevents the conductive terminal 100 from tilting or shaking as a whole, so that the entire conductive terminal 100 is stably connected to the circuit board 4.

[0048] like Figure 1 , Figure 2 , Figure 3 , Figure 6As shown, the second side plate 3 extends outward from at least one edge in the left-right direction with a second limiting part 32. The second limiting part 32 corresponds to the extension part 22. The first limiting part 23 is engaged with the second limiting part 32 to prevent the second limiting part 32 from displacing away from the extension part 22, so that the first mounting foot 21 and the second mounting foot 31 are stably connected and conductive to the circuit board 4. The second limiting part 32 is located on the side closer to the second mounting foot 31. The position where the first limiting part 23 and the second limiting part 32 engage is also closer to the second mounting foot 31, which can have a better limiting effect on the second mounting foot 31. In addition, the second limiting part 32 and the extension part 22 are aligned in the front-back direction to avoid the first limiting part 23 tilting, which would affect the limiting effect of the first limiting part 23 on the first side plate 2 and the second side plate 3. The lower end surface of the second limiting part 32 is flush with the lower end surface of the extension part 22 to avoid the second limiting part 32 extending too far downward, which would waste material. Specifically, the lower end of the second limiting part 32 can also be configured to be aligned with the first side plate 2. In this embodiment, a second limiting part 32 extends outward from both sides of the left and right edges of the second side plate 3, and the two second limiting parts 32 are aligned in the left and right directions, so that the left and right sides of the second side plate 3 are evenly stressed. The two first limiting parts 23 are respectively fastened to the two second limiting parts 32, so that the left and right sides of the first side plate 2 and the second side plate 3 are not easily opened and deformed in the front and back directions. This makes it possible for the two first mounting feet 21 extending from the lower left and right sides of the first side plate 2 and the two second mounting feet 31 extending from the lower left and right sides of the second side plate 3 to be aligned with the four corresponding conductive through holes 41 on the circuit board 4, so that the two first mounting feet 21 and the two second mounting feet 31 can be inserted into the corresponding conductive through holes 41 on the circuit board 4 and soldered to the circuit board 4 to form an electrical connection. In other embodiments, the two sides of the second side plate 3 in the left and right directions may each have a plurality of second limiting portions 32 extending outward, and the number of second limiting portions 32, the number of extension portions 22 and the number of first limiting portions 23 are equal. In this embodiment, the length of the second limiting part 32 in the left-right direction is equal to the length of the extension part 22 in the left-right direction, and is less than the distance between the first side plate 2 and the second side plate 3 in the front-back direction; the width of the second limiting part 32 in the up-down direction is also equal to the width of the extension part 22 in the up-down direction, and the length of the second limiting part 32 in the up-down direction is as short as possible, so that the first limiting part 23 is closer to the mounting foot and has a better limiting effect; the second limiting part 32 extends upward with a protrusion 321, and the protrusion 321 is limited between the two stop sections 232 in the left-right direction, and the end of the connecting section 231 away from the extension part 22 stops the protrusion 321 from displacing towards the side of the extension part 22, wherein the total length of the first limiting part 23 and the protrusion 321 in the up-down direction does not exceed the total length of the first side plate 2 and the second side plate 3 in the up-down direction.In other embodiments (not shown in the figure), when the extension 22 is connected to the first limiting part at the lower end, the corresponding second limiting part 32 extends downward with a protrusion. The protrusion is located between the two stop sections in the left-right direction, and the end of the connecting section away from the extension section stops the protrusion from moving toward the side of the extension section.

[0049] like Figure 1 , Figure 4 , Figure 5 , Figure 6As shown, in this embodiment, the docking member 5 is inserted downwards into the conductive terminal 100 from the insertion interface 11. The second side plate 3 has a second opening 33, and a second contact arm 34 extends downwards from the upper wall of the second opening 33 toward the first side plate 2. The second contact arm 34 has a third extension section 341 that is connected to the top plate 1 and extends downwards, and a fourth extension section 342 that extends downwards from the lower end of the third extension section 341 toward the first side plate 2. The lower end of the second contact arm 34 is bent to form a second contact portion 343, that is, the second contact portion 343 is formed by bending and extending from the fourth extension section 342 toward the second side plate 3. The second contact portion 343 is exposed in the insertion interface 11, and the second contact portion 343 and the first contact portion 263 are used to jointly clamp the docking member 5. In this embodiment, the third extension segment 341 is vertical and aligned with the second side plate 3, such that the angle between the top surface of the top plate 1 and the flat plate of the third extension segment 341 is greater than or equal to 90 degrees, and the angle between the flat plate of the third extension segment 341 and the flat plate of the fourth extension segment 342 is greater than 90 degrees. In this embodiment, the upper wall of the second opening 33 extends downward toward the first side plate 2 with two second contact arms 34, which are aligned in the left-right direction. The lower end of the second side plate 3 extends upward toward the first side plate 2 with a second abutment arm 35. The end of the second abutment arm 35 away from the second side plate 3 overlaps with the end of the second contact arm 34 away from the top plate 1 in the front-back direction, and the upper end of the second abutment arm 35 is bent to form a second abutment portion 351. In this embodiment, the lower end of the second side plate 3 bends upward and extends toward the first side plate 2, with two second abutment arms 35. The two second abutment arms 35 are aligned in the left-right direction, and the ends of the two second abutment arms 35 away from the second side plate 3 overlap with the ends of the two second contact arms 34 away from the top plate 1 in the front-back direction. In this embodiment, when the docking member 5 is inserted downward from the insertion interface 11 into the conductive terminal 100, the first contact portion 263 and the second contact portion 343 clamp the docking member 5 in the front-back direction. The first abutment portion 271 abuts against the side of the first contact portion 263 away from the docking member 5, and the second abutment portion 351 abuts against the side of the second contact portion 343 away from the docking member 5. The length of the second abutment arm 35 extending downward along the second side plate 3 is less than the length of the stop portion 28 extending downward along the second side plate 3. When the conductive terminal 100 is fixed on the circuit board 4, there is a gap between the second abutment arm 35 and the circuit board 4 in the vertical direction, which can prevent the second abutment arm 35 from contacting the circuit board 4 and affecting the elasticity of the second abutment arm 35.In this embodiment, the second opening 33 extends from the second side plate 3 to the top plate 1. The second contact arm 34 is integrally connected to the rear edge of the top plate 1. The second side plate 3 consists of side walls located on the left and right sides of the second opening 33 and a bottom wall located below the second opening 33 and connected to the two side walls. The two side walls are connected to the rear edge of the top plate 1. Two second mounting feet 31 extend from the bottom ends of the bottom walls below the two side walls. The second abutting arm 35 extends upward from the bottom end of the bottom wall between the two second mounting feet 31 and bends towards the second side plate 3. A stop portion 28 provided on the second side plate 3 extends downward from the bottom wall of the second side plate 3, and the stop portion 28 is located between the second abutting arm 27 and the second mounting foot 31 in the left-right direction. In other embodiments, the second opening 33 is located in the second side plate 3, and the second contact arm 34 is integrally connected to the second side plate 3.

[0050] like Figure 7 As shown, the top plate 1, the first side plate 2, the extension 22, the first limiting part 23, the first contact arm 26, the first supporting arm 27, the first mounting foot 21, the second side plate 3, the second limiting part 32, the second contact arm 34, the second supporting arm 35, the second mounting foot 31 and the stop part 28 are integrally formed and stamped, and then bent to form the conductive terminal 100.

[0051] like Figure 8 As shown, in other embodiments, the mating member 5 is inserted between the first contact arm 26 and the second contact arm 34 through the opening of the circuit board 4. The first contact arm 26 extends upward from the lower end of the first side plate 2 and bends toward the second side plate 3, with the lower end of the first contact arm 26 forming a first contact portion 263. The second contact arm 34 extends upward from the lower end of the second side plate 3 and bends toward the first side plate 2, with the lower end of the second contact arm 34 forming a second contact portion 343. The first side plate 2 has a first opening 25, and a first abutting arm 27 extends downward from the upper wall surface of the first opening 25 and bends toward the second side plate 3. The lower end of the first abutting arm 27 bends to form a first abutting portion 271. The first contact portion 263 overlaps with the second contact portion 343 in the front-back direction. The second side plate 3 has a second opening 33. A second supporting arm 35 extends downward from the upper wall surface of the second opening 33 and bends toward the first side plate 2. The lower end of the second supporting arm 35 bends to form a second abutting portion 351. The second abutting portion 351 overlaps with the second contact portion 343 in the front-back direction. When the docking member 5 is inserted into the conductive terminal 100 from the opening of the circuit board 4, the first contact portion 263 and the second contact portion 343 clamp the docking member 5 in the front-back direction. The first abutting portion 271 abuts against the side of the first contact portion 263 away from the docking member 5, and the second abutting portion 351 abuts against the side of the second contact portion 343 away from the docking member 5.

[0052] In summary, the conductive terminal 100 of this utility model has the following beneficial effects:

[0053] (1) A first side plate 2 and a second side plate 3 are formed by bending downwards from the front and rear sides of the top plate 1, respectively. An extension portion 22 extends outward from at least one edge of the first side plate 2 in the left-right direction. In the up-down direction, the extension portion 22 is located on the side close to the first mounting foot 21. A first limiting portion 23 is connected to at least one end of the extension portion 22 in the up-down direction, and the first limiting portion 23 bends and extends toward the second side plate 3. A second limiting portion 32 extends outward from at least one edge of the second side plate 3 in the left-right direction. In the up-down direction, the second limiting portion 32 is located on the side close to the second mounting foot 31. The first limiting portion 23 is engaged with the second limiting portion 32 to prevent the second limiting portion 32 from displacing away from the extension portion 21, so that the first side plate 2 and the second side plate 3 are not easily separated and deformed in the front-back direction, thereby preventing the first mounting foot 21 and the second mounting foot 31 from being separated in the front-back direction. The first mounting pin 21 and the second mounting pin 31 are easily opened to each other, thereby ensuring a stable connection and conduction between the first mounting pin 21 and the circuit board 4, realizing stable electrical conduction between the conductive terminal 100 and the circuit board 4. Furthermore, the first limiting part 23 extends in the vertical direction, not in the horizontal direction. That is, both the first limiting part 23 and the first side plate 2 extend in the vertical direction. The length of the first side plate 2 itself in the vertical direction is relatively long, so the length of the first limiting part 23 extending in the vertical direction will not exceed the total length of the first side plate 2 and the second side plate 3 in the vertical direction. In this way, the conductive terminal 100 will not become too long due to the addition of the first limiting part 23. Before the conductive terminal 100 is bent, the first limiting part 23 is set parallel to the first side plate 2, making the overall planar unfolded structure of the conductive terminal 100 more compact. This avoids increasing the size of the metal plate used to manufacture the conductive terminal 100 and saves manufacturing materials.

[0054] (2) The first limiting part 23 has a connecting section 231 connected to the extension part 22, and two stop sections 232 extending downward from the end of the connecting section 231 away from the extension part 22. The two stop sections 232 stop at the side of the second limiting part 32 away from the extension part 22, and the second limiting part 32 extends upward with a protrusion 321. The end of the connecting section 231 away from the extension part 22 can also stop the protrusion 321 from displacing towards the side of the extension part 22. This can prevent the first side plate 2 and the second side plate 3 from opening or closing towards each other in the front-rear direction, thereby preventing the first mounting foot 21 and the second mounting foot 31 from opening or closing towards each other in the front-rear direction, so that the first mounting foot 21 and the second mounting foot 31 on the first side plate 2 and the second side plate 3 can respectively connect to the circuit board. The corresponding conductive through-holes 41 on the circuit board 4 are aligned; the protrusion 321 in the left and right direction is limited between the two stop sections 232. In this way, the two stop sections 232 limit the protrusion 321, which can prevent the first limiting part 23 from displacing in the left and right direction, thereby preventing the first side plate 2 and the second side plate 3 from shifting in the left and right direction, and thus preventing the first mounting foot 21 and the second mounting foot 31 from shifting in the left and right direction. This allows the first mounting foot 21 and the second mounting foot 31 on the first side plate 2 and the second side plate 3 to be aligned with the corresponding conductive through-holes 41 on the circuit board 4, so that the first mounting foot 21 and the second mounting foot 31 can be inserted into the corresponding conductive through-holes 41 on the circuit board 4 and soldered to the circuit board 4 to form an electrical connection, thereby realizing the accurate connection and conduction between the conductive terminal 100 and the circuit board 4.

[0055] (3) The length of the extension 22 in the left-right direction is less than the distance between the first side plate 2 and the second side plate 3 in the front-back direction, and the length of the extension 22 in the left-right direction is equal to the length of the second limiting part 32 in the left-right direction. This avoids the extension 22 and the second limiting part 32 from being too long and wasting materials. There is a gap 24 between the first limiting part 23 and the first side plate 2 in the left-right direction, which facilitates the bending of the first limiting part 23. The side edge of the first limiting part 23 away from the first side plate 2 is flush with the side edge of the extension 22 away from the first side plate 2. This avoids the first limiting part 23 from protruding outward too much and wasting materials. In addition, when stamping the conductive terminal 100, the side edges of the first limiting part 23 away from the first side plate 2 and the side edges of the extension 22 away from the first side plate 2 can be stamped in one go, which is convenient for manufacturing.

[0056] (4) The first contact arm 26 has a first extension segment 261 that bends downward from the upper wall of the first opening 25, and a second extension segment 262 that bends downward from the lower end of the first extension segment 261 and toward the second side plate 3. That is, the first contact arm 26 is formed by first bending downward for the first time, and then bending downward from the lower end of the first extension segment 261 and toward the second side plate 3 for the second time. When the mating member 5 is inserted into the conductive terminal 100, the stress borne by the first contact arm 26 formed after the two bends can be distributed at the two bends, thereby increasing the strength of the contact arm 26. The elasticity of the first contact arm 26 makes it less prone to collapsing; similarly, the second contact arm 34 is first bent downwards from the upper wall of the second opening 33 to form the third extension 341, and then bent downwards from the lower end of the third extension 341 toward the fourth side plate to form the fourth extension 342. When the mating member 5 is inserted into the conductive terminal 100, the stress borne by the second contact arm 34 formed after two bends can be distributed at the two bends, thereby increasing the elasticity of the second contact arm 34 and making it less prone to collapsing.

[0057] (5) When the docking member 5 is inserted downwards from the insertion interface 11 on the top plate between the first contact arm 27 and the second contact arm 35 of the conductive terminal 100, the first contact arm 26 and the second contact arm 34 bend downwards. Since the bending direction of the first contact arm 26 and the second contact arm 34 is the same as the insertion direction of the docking member 5, the first contact portion 263 and the second contact portion 343 clamp the docking member 5 in the front-back direction. The first contact arm 26 and the second contact arm 34 can guide the docking member 5, preventing the docking member 5 from being inserted into the ends of the first abutment arm 27 and the second abutment arm 35, thereby preventing the insertion of the docking member 5 from causing the first abutment arm 27 and the second abutment arm 35 to be inserted into the ends of the conductive terminal 100. When the supporting arm 35 deforms, and the first contact portion 263 and the second contact portion 343 clamp the docking member 5 in the front-back direction, the first abutting portion 271 of the first supporting arm 27 abuts against the side of the first contact portion 263 away from the docking member 5, and the second abutting portion 351 of the second supporting arm 35 abuts against the side of the second contact portion 343 away from the docking member 5. The first abutting portion 271 and the second abutting portion 351 can respectively give the first contact portion 263 and the second contact portion 343 a holding force towards the docking member 5, so that the docking member 5 is stably clamped between the first contact arm 26 and the second contact arm 35, thereby improving the connection stability between the conductive terminal 100 and the docking member 5.

[0058] (6) When the mating member 5 is inserted upwards from the opening on the circuit board 4 between the first contact arm 26 and the second contact arm 34 of the conductive terminal 100, the first contact arm 26 and the second contact arm 34 are bent upwards. Since the bending direction of the first contact arm 26 and the second contact arm 34 is the same as the insertion direction of the mating member 5, the first contact arm 26 and the second contact arm 34 can play a guiding role, which can prevent the mating member 5 from being inserted into the ends of the first abutment arm 27 and the second abutment arm 35, thereby avoiding deformation of the first abutment arm 27 and the second abutment arm 35 caused by the insertion of the mating member. And when the first contact arm 26 and the second contact arm 34 are bent upwards from the opening on the circuit board 4, the first contact arm 26 and the second contact arm 34 can play a guiding role, thereby avoiding deformation of the first abutment arm 27 and the second abutment arm 35 caused by the insertion of the mating member. When the first abutment arm 271 and the second contact arm 35 clamp the docking member 5 in the front-back direction, the first abutment portion 271 of the first abutment arm 27 abuts against the side of the first contact portion 263 away from the docking member 5, and the second abutment portion 351 of the second abutment arm 35 abuts against the side of the second contact portion 343 away from the docking member 5. The first abutment portion 271 and the second abutment portion 351 can respectively give the first contact portion 263 and the second contact portion 343 a holding force towards the docking member 5, so that the docking member 5 is stably clamped between the first contact arm 26 and the second contact arm 35, thereby improving the connection stability between the conductive terminal 100 and the docking member 5.

[0059] The above detailed description is only a description of the preferred embodiment of this utility model and is not intended to limit the patent scope of this utility model. Therefore, all equivalent technical changes made using the content of this invention's specification and illustrations are included within the patent scope of this invention.

Claims

1. A conductive terminal for mating with a mating member and being electrically connected to a circuit board, characterized in that, include: The top plate is bent downwards from the front and rear sides to form the first side plate and the second side plate, respectively. A first contact arm and a second contact arm that extend relative to each other are provided between the first side plate and the second side plate. The first contact arm and the second contact arm are used to jointly clamp the docking parts. The lower end of the first side plate extends with a first mounting foot, and an extension extends outward from at least one edge of the first side plate in the left-right direction. In the up-down direction, the extension is located on the side close to the first mounting foot. At least one end of the extension in the up-down direction is connected to a first limiting part, and the first limiting part bends and extends toward the second side plate. The length of the first limiting part does not exceed the total length of the first side plate and the second side plate in the up-down direction. The lower end of the second side plate extends with a second mounting foot, and at least one edge of the second side plate extends outward in the left-right direction with a second limiting part. In the up-down direction, the second limiting part is located on the side close to the second mounting foot. The first limiting part is engaged with the second limiting part to prevent the second limiting part from displacing in a direction away from the extension, thereby making the first mounting foot and the second mounting foot stably connected and conductive with the circuit board.

2. The conductive terminal as described in claim 1, characterized in that: Two first mounting feet extend from the lower left and right sides of the first side plate. An extension extends outward from the left and right edges of the first side plate. The upper ends of the two extensions are integrally connected to the first limiting parts. The plate surfaces of the two first limiting parts are parallel to the plate surface of the top plate. Two second mounting feet extend from the lower left and right sides of the second side plate. Two second limiting parts extend outward from the left and right edges of the second side plate corresponding to the two first limiting sections. The lower end surfaces of the two extensions are flush with the lower end surfaces of the two second limiting parts. The two first limiting parts are respectively fastened to the two second limiting parts.

3. The conductive terminal as described in claim 1, characterized in that: The first limiting part has a connecting section connected to the extension part, and two stop sections that bend downward from the end of the connecting section away from the extension part. The two stop sections stop at the side of the second limiting part away from the extension part, and the two stop sections are spaced apart in the left and right direction. The second limiting part has a protrusion extending upward, and the protrusion is limited between the two stop sections in the left and right direction. The end of the connecting section away from the extension part stops the protrusion from moving towards the side of the extension part.

4. The conductive terminal as described in claim 1, characterized in that: The length of the extension in the left-right direction is equal to the length of the second limiting part in the left-right direction, and less than the distance between the first side plate and the second side plate in the front-back direction. The width of the first limiting part in the left-right direction is less than the length of the extension in the left-right direction. There is a gap between the first limiting part and the first side plate in the left-right direction, and the side edge of the first limiting part away from the first side plate is flush with the side edge of the extension away from the first side plate.

5. The conductive terminal as described in claim 1, characterized in that: The outer edge of the first mounting foot along the left-right direction is aligned with the edge of the first side plate along the top-bottom direction. The outer edge of the second mounting foot along the left-right direction is aligned with the edge of the second side plate along the top-bottom direction. Both the first and second mounting feet are soldered to the circuit board to form electrical conductivity.

6. The conductive terminal as described in claim 1, characterized in that: A connector is provided through the top plate in a vertical direction for the mating component to be inserted downwards between the first contact arm and the second contact arm. The first side plate has a first opening. The first contact arm extends downwards from the upper wall of the first opening and bends toward the second side plate. The first contact arm has a first contact portion exposed in the connector. The second side plate has a second opening. The second contact arm extends downwards from the upper wall of the second opening and bends toward the first side plate. The second contact arm has a second contact portion exposed in the connector. The first contact portion and the second contact portion together clamp the mating component.

7. The conductive terminal as described in claim 6, characterized in that: The first contact arm has a first extension section that bends downward from the upper wall of the first opening, and a second extension section that bends downward from the lower end of the first extension section and toward the second side plate. A first contact portion is formed by bending and extending from the second extension section toward the first side plate. The second contact arm has a third extension section that bends downward from the upper wall of the second opening, and a fourth extension section that bends downward from the lower end of the third extension section and toward the first side plate. A second contact portion is formed by bending and extending from the fourth extension section toward the second side plate.

8. The conductive terminal as described in claim 7, characterized in that: A first abutting arm extends upward from the lower end of the first side plate and bends toward the second side plate. The upper end of the first abutting arm bends to form a first abutting portion. A second abutting arm extends upward from the lower end of the second side plate and bends toward the first side plate. The upper end of the second abutting arm bends to form a second abutting portion. A mating member is inserted downward from the insertion port between the first contact arm and the second contact arm. The first abutting portion abuts against the side of the first contact portion away from the mating member, and the second abutting portion abuts against the side of the second contact portion away from the mating member.

9. The conductive terminal as described in claim 1, characterized in that: The first contact arm extends upward from the lower end of the first side plate and bends toward the second side plate, with the upper end of the first contact arm bent to form a first contact portion. The second contact arm extends upward from the lower end of the second side plate and bends toward the first side plate, with the upper end of the second contact arm bent to form a second contact portion. The first side plate has a first opening, and a first abutting arm extends downward from the upper wall of the first opening and bends toward the second side plate, with the lower end of the first abutting arm bent to form a first abutting portion. The second side plate has a second opening, and a second abutting arm extends downward from the upper wall of the second opening and bends toward the first side plate, with the lower end of the second abutting arm bent to form a second abutting portion. The mating member is inserted upward from the opening of the circuit board between the first contact arm and the second contact arm. The first contact portion and the second contact portion clamp the mating member in the front-rear direction. The first abutting portion abuts against the side of the first contact portion away from the mating member, and the second abutting portion abuts against the side of the second contact portion away from the mating member.

10. A conductive terminal for mating with a mating member and electrically communicating with a circuit board, the circuit board having at least two mutually spaced conductive vias, characterized in that... include: The top plate is bent downwards from the front and rear sides to form the first side plate and the second side plate, respectively. A first contact arm and a second contact arm that extend relative to each other are provided between the first side plate and the second side plate. The first contact arm and the second contact arm are used to jointly clamp the docking parts. The lower end of the first side plate extends with a first mounting foot, and an extension extends outward from at least one edge of the first side plate in the left-right direction. In the up-down direction, the extension is located on the side close to the first mounting foot. At least one end of the extension in the up-down direction is connected to a first limiting part, and the first limiting part bends and extends toward the second side plate. The lower end of the second side plate extends with a second mounting foot, and at least one edge of the second side plate extends outward in the left-right direction with a second limiting part. In the up-down direction, the second limiting part is located on the side close to the second mounting foot. The first limiting part is engaged with the second limiting part to prevent the second limiting part from displacing in a direction away from the extension, so that the first mounting foot is inserted into a conductive through hole on the circuit board and soldered to form electrical continuity, and the second mounting foot is inserted into another conductive through hole on the circuit board and soldered to form electrical continuity.