Electrical connection terminal

By setting limiting structures and guide protrusions on the electrical connection terminals, the jamming problem during the insertion process is solved, achieving stable insertion and structural protection of the electrical connection terminals and improving the reliability of the electrical connection.

CN223843211UActive Publication Date: 2026-01-27SHENZHEN JINLING ELECTRONICS
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Patent Information

Application Number
CN202423299058.9
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2024-12-27
Publication Date
2026-01-27
Estimated Expiration
2034-12-27

AI Technical Summary

Technical Problem

Existing electrical connection terminals are prone to jamming during the insertion process, which can lead to structural damage and affect the smooth insertion and reliability of the electrical connection.

Method used

A forward limiting structure and a backward limiting structure are provided on the electrical connection terminal, including a limiting protrusion and multiple spring arms, to limit the forward and backward movement of the terminal within the insulating housing. Combined with a guide protrusion, the terminal is guided and positioned to prevent damage to the terminal structure.

Benefits of technology

The guiding and positioning structure ensures the stability and reliability of the electrical connection terminal plugging, prevents structural damage, and improves plugging efficiency and connection system stability.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model belongs to the technical field of electric connectors, and discloses an electric connection terminal, which comprises a terminal body, a plurality of second elastic arms are arranged at the front end of the terminal body, and a plugging space distributed along the length direction of the terminal body is defined by the plurality of second elastic arms; and a guide part for guiding the butt-joint electric connection terminal is arranged at the insertion space. According to the electric connection terminal, the guiding part is arranged at the plugging space to realize positioning and guiding when the butt-joint electric connection terminal is plugged into the plugging space, so that the electric connection terminal and the butt-joint electric connection terminal can be plugged and matched more efficiently and quickly; the guiding part is guided through a guiding protruding block arranged on the front side of each second elastic arm, the guiding protruding blocks are inclined inwards, the inner walls of the rear ends of the guiding protruding blocks are closer to the inner side than the inner walls of the front ends of the second elastic arms, and the butt joint electric connection terminal is prevented from abutting against the front end faces of the second elastic arms when inserted into the insertion space.
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Description

Technical Field

[0001] This utility model relates to the field of electrical connector technology, and in particular to an electrical connection terminal. Background Technology

[0002] An electrical connector mainly consists of an insulating shell and electrical connection terminals. The insulating shell contains a mating cavity, and the electrical connection terminals are positioned within this cavity along the mating direction. The electrical connection terminals are classified as female terminals and male terminals based on their mating relationship with the connector. The female terminal has a mating space for the male terminal to be inserted. In the prior art, one structural feature of the female terminal is the presence of at least two spring arms at its mating end. These spring arms enclose the mating space, providing elasticity and pressure when the male terminal is inserted, ensuring the stability and reliability of the mating connection.

[0003] Several problems may arise during the insertion of male and female terminals. Manufacturing tolerances or improper alignment by the user can prevent the male terminal from being properly inserted into the female terminal's insertion space. When the spring-loaded ends of the male and female terminals exert mutual resistance, jamming may occur during insertion. This jamming not only affects the smoothness of the insertion but may also damage the terminal structure. In severe cases, this resistance can cause terminal deformation, breakage, or even failure, thus affecting the performance and reliability of the entire electrical connection system. Utility Model Content

[0004] In view of the shortcomings of the prior art, the technical problem to be solved by this utility model is to provide an electrical connection terminal that can guide the mating electrical connection terminal and prevent damage to the terminal structure.

[0005] To solve the above-mentioned technical problems, the present invention provides an electrical connection terminal, including a terminal body, a forward limiting structure and a backward limiting structure disposed on the terminal body along the length direction of the terminal body, wherein the forward limiting structure is used to restrict the forward movement of the terminal body within the insulating housing, and the backward limiting structure is used to restrict the backward movement of the terminal body within the insulating housing.

[0006] Furthermore, the forward limiting structure and the rear limiting structure are arranged sequentially from back to front along the length direction of the terminal body; the forward limiting structure is configured as a limiting protrusion arranged around the outer periphery of the terminal body, and the rear limiting structure is configured as a plurality of first elastic arms arranged around the outer periphery of the terminal body, the first elastic arms being inclined backward and outward.

[0007] Furthermore, the limiting protrusion is configured as a limiting protrusion ring surrounding the outer periphery of the terminal body; or

[0008] The limiting protrusion is configured as a plurality of limiting protrusions spaced apart around the outer periphery of the terminal body.

[0009] Furthermore, the terminal body has a cylindrical structure, and a plurality of first windows are provided on the outer peripheral wall of the terminal body. The plurality of first windows are distributed at intervals around the outer periphery of the terminal body. A plurality of first spring arms are respectively disposed in the plurality of first windows. The front end of the first spring arm is connected to the front edge of the first window, and the rear end of the first spring arm extends backward, forward and outward at an angle. The width of the front end of the first spring arm is greater than the width of its rear end. A first slit is formed between the lateral sides of the first spring arm and the lateral sides of the first window, and a second slit is formed between the rear end face of the first spring arm and the rear edge of the first window.

[0010] Furthermore, the front end of the terminal body is provided with a plurality of second spring arms, which enclose and form an insertion space distributed along the length direction of the terminal body.

[0011] Furthermore, the front end of the terminal body has a cylindrical structure, and the outer peripheral wall of the front end of the terminal body is provided with a plurality of second windows, which are spaced apart around the outer peripheral wall of the front end; a plurality of second spring arms are respectively disposed in the plurality of second windows, the rear end of the second spring arms is connected to the rear edge of the second window, the front end of the second spring arms extends forward and inward, a third slit is formed between the lateral sides of the second spring arms and the lateral sides of the second window, and a fourth slit is formed between the front end face of the second spring arms and the front edge of the second window.

[0012] Furthermore, the inner surface of the front end of the second spring arm has an inwardly curved contact protrusion; the front end of the second spring arm has an inwardly curved arch structure, and the inner surface of the arch structure forms the contact protrusion; the rear end width of the second spring arm is greater than its front end width.

[0013] Furthermore, a protrusion is provided on the front edge of the second window at the position opposite the front end face of the second spring arm, and the third slit is formed between the protrusion and the front end face of the second spring arm.

[0014] Furthermore, the rear end of the terminal body is provided with a wire-holding portion, the wire-holding portion having a back with an arc-shaped cross-section and a first holding arm and a second holding arm formed on the lateral sides of the back.

[0015] Furthermore, the first and second clamping arms are staggered along the length of the terminal body.

[0016] This utility model of electrical connection terminal has the following beneficial effects: By providing a guide portion at the insertion space, the positioning and guidance of the mating electrical connection terminal when inserted into the insertion space are achieved, facilitating more efficient and rapid insertion and mating of the electrical connection terminal and the mating electrical connection terminal; the guide portion is guided by guide protrusions disposed on the front side of each second spring arm. These guide protrusions are inclined inwards, and the rear inner wall of the guide protrusion is further inward than the front inner wall of the second spring arm, preventing the mating electrical connection terminal from abutting against the front face of the second spring arm when inserted into the insertion space. This protects the electrical connection terminal structure from damage and ensures the stability and reliability of the electrical connection system. The terminal body has independent forward limiting structures and rear limiting structures along its length. The forward limiting structure stops the terminal body forward within the insertion cavity of the insulating shell, and the rear limiting structure stops the terminal body backward within the insertion cavity of the insulating shell, effectively preventing the terminal body from moving back and forth. The rearward limiting structure is configured with multiple rearward and outwardly inclined first elastic arms, and the rearward limiting structure is located in front of the forward limiting structure. When the electrical connection terminal is inserted into the insertion cavity from back to front, the first elastic arms can be restricted inward by the inner wall of the insertion cavity along the insertion direction. After moving into place, the rear end of the first elastic arm is held by the corresponding rearward stop step on the inner wall, so that the electrical connection terminal is rearwardly limited in the insertion cavity. The forward limiting structure adopts a limiting protrusion ring that stretches the shell wall of the middle part outward. The limiting protrusion ring moves freely forward to the position of the forward stop step on the inner wall of the insertion cavity, and the electrical connection terminal is forwardly limited in the insertion cavity. Attached Figure Description

[0017] The accompanying drawings, which are included to provide a further understanding of this application and form part of this application, illustrate exemplary embodiments and are used to explain this application, but do not constitute an undue limitation of this application. In the drawings:

[0018] Figure 1 This is a structural schematic diagram of one embodiment of the electrical connection terminal of this utility model.

[0019] Figure 2 yes Figure 1 A longitudinal sectional view.

[0020] The meanings of the labels in the attached diagram are as follows:

[0021] Electrical connection terminal 120; terminal body 12a; middle part 121a; partition 1211; large outer diameter section 1212; first small outer diameter section 1213; second small outer diameter section 1214; mating part 122a; second spring arm 1221; contact protrusion 1221a; arch structure 1221b; insertion space 1222; second window 1223; third slit 1224; fourth slit 1225; guide protrusion 1226; wire-holding part 123a; back 1231; first holding arm 1232; second holding arm 1233; forward limiting structure 12b; limiting protrusion ring 121b; rear limiting structure 12c; first spring arm 121c; first window 122c; first slit 123c; second slit 124c. Detailed Implementation

[0022] To make the objectives, technical solutions, and advantages of this application clearer, the technical solutions of this application will be clearly and completely described below in conjunction with specific embodiments and corresponding drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of them. Based on the embodiments in this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0023] It should be noted that when a component is said to be "fixed to" another component, it can be directly attached to the other component or there may be an intervening component. When a component is said to be "connected to" another component, it can be directly connected to the other component or there may be an intervening component.

[0024] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention.

[0025] Please see Figures 1 to 2 In this article, combined with Figures 1 to 2 The structure shown is an exemplary description of the electrical connection terminal 120 of this utility model, so as to more clearly illustrate the various components and mating relationships of the electrical connection terminal 120. It should be understood that, although the following will... Figures 1 to 2 The electrical connection terminal 120 shown is described in detail as an example, but it is not intended to limit the scope of the electrical connection terminal 120 of this utility model. Apart from the components that solve the necessary technical problems of this utility model, the other components can be regarded as non-essential technical elements. These non-essential technical elements can be replaced by other technical elements with the same or similar functions or structures in other embodiments, or these non-essential technical elements may not be needed in other embodiments.

[0026] Figure 1 and Figure 2 The electrical connection terminal 120 shown is used to be inserted into the insertion cavity of the insulating shell of the electrical connector. The front end of the electrical connection terminal 120 is inserted and engaged with the front end of the mating electrical connection terminal of the mating electrical connector, and the rear end of the electrical connection terminal 120 can be connected and fixed to a board, wire, etc. The electrical connection terminal 120 includes a terminal body 12a, a forward limiting structure 12b and a rear limiting structure 12c disposed on the terminal body 12a along the length direction of the terminal body 12a. The front end of the terminal body is provided with a plurality of second spring arms 1221, which enclose a insertion space 1222 distributed along the length direction of the terminal body 12a; a guide portion for guiding the mating electrical connection terminal is provided in the insertion space 1222. The forward limiting structure 12b is used to restrict the forward movement of the terminal body 12a within the insulating shell, and the rear limiting structure 12c is used to restrict the rearward movement of the terminal body 12a within the insulating shell.

[0027] The terminal body 12a has a cylindrical structure and is formed by rolling a metal sheet. Those skilled in the art will understand that the terminal body 12a can also adopt any known terminal structure, such as a sheet terminal structure, a columnar terminal structure, etc. The terminal body 12a, according to its structural features, may include a middle portion 121a, a mating portion 122a integrally connected to the front end of the middle portion 121a, and a mounting portion integrally connected to the rear end of the middle portion 121a. Both the middle portion 121a and the mating portion 122a can be configured as a cylindrical (e.g., cylindrical) structure, formed by rolling a sheet metal sheet, such that both the middle portion 121a and the mating portion 122a have a through-slit 1211 along their length. The through-slit 1211 allows the middle portion 121a and the mating portion 122a to have elasticity in the radial direction, facilitating the assembly of the terminal body 12a into the insertion cavity of the insulating shell and improving assembly efficiency. The mounting portion can be configured according to the object to be connected. For example, in this embodiment, the object to be connected to the mounting portion is a wire, so the mounting portion is configured as a wire-holding portion 123a for connecting (e.g., crimping) the wire. Alternatively, in other embodiments, when the connection end of the mounting portion is a circuit board, the mounting portion can be configured as a solder joint structure that facilitates soldering onto the circuit board.

[0028] The forward limiting structure 12b and the rear limiting structure 12c are arranged sequentially from back to front along the length direction of the terminal body 12a. For example, the forward limiting structure 12b and the rear limiting structure 12c are arranged sequentially from back to front on the outer peripheral wall of the middle part 121a.

[0029] The forward limiting structure 12b is configured to have limiting protrusions around the outer periphery of the terminal body 12a. These limiting protrusions can be multiple limiting protrusions spaced apart around the outer periphery of the terminal body 12a, or they can be limiting protrusion rings 121b (the solution adopted in this embodiment) around the outer periphery of the terminal body 12a. The limiting protrusion ring 121b is integrally formed with the intermediate portion 121a. For example, the cylindrical structure of the intermediate portion 121a is configured as a large outer diameter section 1212, a first small outer diameter section 1213 coaxially formed at the front end of the large outer diameter section 1212, and a second small outer diameter section 1214 coaxially formed at the rear end of the large outer diameter section 1212. Thus, the large outer diameter section 1212 forms the outwardly protruding limiting protrusion ring 121b relative to the first small outer diameter section 1213 and the second small outer diameter section 1214. The limiting protrusion 121b can be a protrusion formed on the surface of the sheet by pressing down on the corresponding area of ​​the sheet using a stamping unit before the sheet is rolled. After being rolled into a cylindrical structure, the protrusion naturally forms the limiting protrusion 121b with a larger outer diameter.

[0030] The rearward limiting structure 12c is configured as a plurality of first spring arms 121c arranged around the outer periphery of the terminal body 12a, the first spring arms 121c being inclined rearward and outward. A plurality of first windows 122c are formed on the outer peripheral wall of the terminal body 12a (i.e., the outer peripheral wall of the middle portion 121a mentioned above), the plurality of first windows 122c being spaced apart around the outer periphery of the terminal body 12a. The plurality of first spring arms 121c are respectively disposed in the plurality of first windows 122c, the front end of the first spring arm 121c being connected to the front edge of the first window 122c, and the rear end of the first spring arm 121c extending backward, forward, and outward (radially outward). The width of the front end of the first spring arm 121c is greater than the width of its rear end. The wider front end increases the connection strength between the first spring arm 121c and the front edge of the first window 122c, while the narrower rear end allows for greater elastic deformation of the first spring arm 121c, making it easier for the terminal body 12a to be inserted into the insertion cavity of the insulating shell. A first slit 123c is formed between the lateral sides of the first elastic arm 121c and the lateral sides of the first window 122c. A second slit 124c is formed between the rear end face of the first elastic arm 121c and the rear edge of the first window 122c. This allows the first elastic arm 121c, except for its front end face which connects to the first window 122c, to be an independent and free part. This facilitates elastic deformation under the pressure of the inner wall of the insertion cavity during assembly, resulting in a higher fit between the first elastic arm 121c and the insertion cavity, and making assembly easier. The first window 122c and the first elastic arm 121c can also be formed by stamping. That is, before the sheet metal is rolled, a stamping unit adapted to the shape of the first slit 123c and the second slit 124c is used to stamp the corresponding areas on the sheet metal downwards, thereby forming the first window 122c and the first elastic arm 121c connected to the front edge of the first window 122c.

[0031] The mating portion 122a is disposed at the front end of the terminal body 12a and can be configured to be integrally formed on the terminal body 12a by a stamping process and located at the front end of the middle portion 121a. The mating portion 122a includes a plurality of second spring arms 1221, which enclose and form an insertion space 1222 distributed along the length direction of the terminal body 12a. The guide portion includes a guide protrusion 1226 connected to the terminal body 122a and located at the front end of each second spring arm 1221, with the rear end of the guide protrusion 1226 further inward and the front end of the second spring arm 1221 further outward. Specifically, the outer peripheral wall of the front end of the terminal body 12a has a plurality of second windows 1223, which are spaced apart around the outer peripheral wall of the front end. Multiple second spring arms 1221 are respectively disposed in multiple second windows 1223. The rear end of the second spring arm 1221 is connected to the rear edge of the second window 1223, and the front end of the second spring arm 1221 extends forward and inward (radially inward). The width of the rear end of the second spring arm 1221 is greater than the width of its front end. The wider rear end increases the connection strength between the second spring arm 1221 and the front edge of the second window 1223, while the narrower front end allows for greater elastic deformation, facilitating the mating part 122a to be inserted into the mating electrical connector. The inner side of the front end of the second spring arm 1221 (the side facing inward in the radial direction) has an inwardly curved contact protrusion 1221a. Specifically, the front end of the second spring arm 1221 forms an inwardly curved arch structure 1221b, and the inner side of the arch structure 1221b forms the contact protrusion 1221a. A fourth slit 1225 is formed between the front end face of the second spring arm 1221 and the front edge of the second window 1223.

[0032] Preferably, the guide protrusion 1226 is located at the front edge of the second window 1223, directly opposite the front end face of the second spring arm 1221. The guide protrusion 1226 extends rearward and inward along the length of the terminal body 12a, and a third slit 1224 is formed between the rear end face of the guide protrusion 1226 and the front end face of the second spring arm 1221. The guide protrusion 1226 can prevent the front end face of the second spring arm 1221 from protruding inward from the inside of the guide protrusion 1226, thereby preventing jamming caused by the front end face of the second spring arm 1221 during the insertion of the electrical connection terminal into the insertion space 1222, and preventing damage to the structure of the second spring arm 1221. The design of the guide protrusion 1226 can also guide the insertion of the docking electrical connection terminal into the insertion space 1222. The guide protrusion 1226 and the front end of the second spring arm 1221 form an inward arched surface, which can tighten the insertion space 1222 and improve the connection stability with the docking electrical connection terminal.

[0033] The wire-holding portion 123a is disposed at the rear end of the terminal body 12a. The wire-holding portion 123a has a back surface 1231 with an arc-shaped cross-section and first holding arms 1232 and second holding arms 1233 formed on both lateral sides of the back surface 1231. The first holding arms 1232 and second holding arms 1233 are staggered along the length direction of the terminal body 12a. Preferably, a plurality of first holding arms 1232 are configured to be spaced apart along the length direction of the terminal body 12a on one lateral side of the back surface 1231, and a plurality of second holding arms 1233 are configured to be spaced apart along the length direction of the terminal body 12a on the back surface 1231. At least one first holding arm 1232 and at least one second holding arm 1233 are staggered along the length direction of the terminal body 12a.

[0034] Based on the above embodiments, the electrical connection terminal 120 of this utility model has the following beneficial effects: by providing a guide portion at the insertion space 1222, the positioning and guidance of the mating electrical connection terminal when it is inserted into the insertion space 1222 are realized, which facilitates the more efficient and faster insertion and cooperation between the electrical connection terminal 120 and the mating electrical connection terminal 120; the guide portion is guided by the guide protrusion 1226 disposed on the front side of each second spring arm 1221. The guide protrusion 1226 is inclined inward, and the inner wall of the rear end of the guide protrusion 1226 is further inward than the inner wall of the front end of the second spring arm 1221, which prevents the mating electrical connection terminal 120 from abutting against the front end face of the second spring arm 1221 when it is inserted into the insertion space 1222, thus protecting the structure of the electrical connection terminal 120 from damage and ensuring the stability and reliability of the electrical connection system. The terminal body 12a is provided with independent forward limiting structure 12b and backward limiting structure 12c along its length. The forward limiting structure 12b stops the terminal body 12a in the insertion cavity of the insulating shell, and the backward limiting structure 12c stops the terminal body 12a in the insertion cavity of the insulating shell, effectively preventing the terminal body 12a from moving back and forth. The backward limiting structure 12c is configured as multiple backward and outward inclined first elastic arms 121c, and the backward limiting structure 12c is located in front of the forward limiting structure 12b. When the electrical connection terminal 120 is inserted into the insertion cavity from back to front, the first elastic arms 121c can be restricted inward by the inner wall of the insertion cavity along the insertion direction. After moving into place, the rear end of the first elastic arms 121c is held by the corresponding backward stopping step on the inner wall, so that the terminal body 12a is backward limited in the insertion cavity. The forward limiting structure 12b uses a limiting protrusion 121b that stretches the shell wall of the middle part 121a outward. Under the micro-elastic force of the partition 1211, the limiting protrusion 121b is restricted by the inner wall of the insertion cavity and retracts inward during the insertion process of the terminal body 12a. This allows the limiting protrusion 121b to pass through the insertion cavity smoothly and quickly. After moving into place, the limiting protrusion 121b is accommodated by the corresponding annular groove on the inner wall to form a concave-convex fit relationship. This restricts the electrical connection terminal 120 forward in the insertion cavity and simultaneously assists the backward limiting structure 12c, increasing the backward limiting capability. This ensures that the position of the electrical connection terminal 120 is not affected by the insertion force of the mating electrical connection terminal, thus guaranteeing the connection stability of the electrical connector.Furthermore, the partition 1211 formed by the rolled electrical connector 120 facilitates its rapid insertion into the mating cavity. Since the mating end of the electrical connector 120 is the female end (with a mating space 1222 for inserting the mating electrical connector), during the insertion of the mating electrical connector into the mating space 1222, the inner cavity (the internal cavity of the cylindrical structure) of the electrical connector 120 is squeezed outward by the mating electrical connector, making the pressing force between the forward limiting structure 12b and the rear limiting structure 12c and the inner wall of the mating cavity stronger. Even when the mating electrical connector is pulled out, the inner cavity of the electrical connector 120 simply returns to its original position, and the position of the electrical connector 120 in the mating cavity is not affected by the removal of the mating electrical connector. Of course, the size of the inner wall section at the rear end of the plug-in cavity can be increased so that the limiting protrusion ring 121b can move forward freely. A corresponding position is provided on the inner wall of the plug-in cavity to limit the front end face of the limiting protrusion ring 121b by the forward stop step, so that the electrical connection terminal 120 is forward-limited in the plug-in cavity.

[0035] The above embodiments only illustrate preferred implementations of this utility model, and their descriptions are relatively specific and detailed, but they should not be construed as limiting the scope of the utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.

Claims

1. An electrical connection terminal, comprising a terminal body, characterized in that: The front end of the terminal body is provided with a plurality of second spring arms, which enclose a insertion space distributed along the length direction of the terminal body; a guide portion for guiding the electrical connection terminal is provided in the insertion space.

2. The electrical connection terminal as described in claim 1, characterized in that: The guide portion includes a guide protrusion connected to the terminal body and located at the front end of each second spring arm, with the rear end of the guide protrusion being further inward and the front end of the second spring arm being further outward.

3. The electrical connection terminal as described in claim 2, characterized in that: The front end of the terminal body has a cylindrical structure, and a plurality of second windows are provided on the outer peripheral wall of the front end of the terminal body. The plurality of second windows are distributed at intervals around the outer peripheral wall of the front end. A plurality of second spring arms are respectively disposed in the plurality of second windows. The rear end of the second spring arm is connected to the rear edge of the second window, and the front end of the second spring arm extends forward and inward. The guide protrusion is disposed at the position of the front edge of the second window directly opposite the front end face of the second spring arm, and the guide protrusion is inclined backward and inward. A third slit is formed between the rear end face of the guide protrusion and the front end face of the second spring arm.

4. The electrical connection terminal as described in claim 3, characterized in that: The inner surface of the front end of the second spring arm has an inwardly curved contact protrusion; the front end of the second spring arm has an inwardly curved arch structure, and the inner surface of the arch structure forms the contact protrusion; the rear end width of the second spring arm is greater than its front end width.

5. The electrical connection terminal as described in claim 1, characterized in that: It also includes a forward limiting structure and a backward limiting structure disposed on the terminal body along the length direction of the terminal body. The forward limiting structure is used to restrict the forward movement of the terminal body within the insulating housing, and the backward limiting structure is used to restrict the backward movement of the terminal body within the insulating housing.

6. The electrical connection terminal as described in claim 5, characterized in that: The forward limiting structure and the rear limiting structure are arranged sequentially from back to front along the length direction of the terminal body; the forward limiting structure is configured as a limiting protrusion arranged around the outer periphery of the terminal body, and the rear limiting structure is configured as a plurality of first elastic arms arranged around the outer periphery of the terminal body, the first elastic arms being inclined backward and outward.

7. The electrical connection terminal as described in claim 6, characterized in that: The limiting protrusion is configured as a limiting protrusion ring surrounding the outer periphery of the terminal body; or The limiting protrusion is configured as a plurality of limiting protrusions spaced apart around the outer periphery of the terminal body.

8. The electrical connection terminal as described in claim 6, characterized in that: The terminal body has a cylindrical structure, and a plurality of first windows are provided on the outer peripheral wall of the terminal body. The plurality of first windows are distributed at intervals around the outer periphery of the terminal body. A plurality of first spring arms are respectively disposed in the plurality of first windows. The front end of the first spring arm is connected to the front edge of the first window, and the rear end of the first spring arm extends backward, forward and outward at an angle. The width of the front end of the first spring arm is greater than the width of its rear end. A first slit is formed between the lateral sides of the first spring arm and the lateral sides of the first window, and a second slit is formed between the rear end face of the first spring arm and the rear edge of the first window.

9. The electrical connection terminal as described in any one of claims 1 to 8, characterized in that: The terminal body has a wire-holding portion at its rear end. The wire-holding portion has a back with an arc-shaped cross-section and a first and a second holding arm formed on both lateral sides of the back.

10. The electrical connection terminal as claimed in claim 9, characterized in that: The first and second clamping arms are staggered along the length of the terminal body.