Electric connection terminal assembly

Abstract

The invention discloses an electric connection terminal assembly, and relates to the technical field of charging, the electric connection terminal assembly comprises a connecting piece, the connecting piece comprises a connecting body and a connecting plate, the connecting body is used for being in plugging cooperation with an external charging male head, and the connecting plate is used for being welded with a cable; a transition ring is arranged on the connecting body, a plurality of elastic contact arms are distributed on the connecting body at intervals in the circumferential direction of the connecting body, and the elastic contact arms are sleeved with limiting pieces. An opening seam is formed in the connecting body, and the connecting body is coated with a mounting piece; when the external charging male head is inserted into the connecting body, the elastic contact arm is in contact with the external charging male head and expands outwards, and the limiting piece applies pressure to the elastic contact arm at the same time. Through structural optimization of the electric connection terminal assembly, effective balance between high performance and low cost is realized, and the overall manufacturing cost is reduced while the contact performance is ensured. Therefore, the electrical connection terminal assembly solves the problem that the electrical connection terminal assembly in the prior art is difficult to effectively balance the plugging service life and the manufacturing cost.

Description

Technical Field

[0001] This invention relates to the field of charging technology, and more particularly to an electrical connection terminal assembly. Background Technology

[0002] Electrical connection terminal assemblies are the core interface components for power transmission in charging equipment, and are widely used in electric vehicle charging guns, portable electronic device charging interfaces, and other fields.

[0003] In existing technologies, electrical connection terminal assemblies are charging female terminals that mate with male pins to form a flexible contact structure. However, on the one hand, to improve the service life of electrical connection terminal assemblies, they are usually made of precision-machined or precious metal materials (such as gold-plated or silver-plated), which increases the manufacturing cost of the electrical connection terminal assemblies; on the other hand, to reduce the manufacturing cost of electrical connection terminal assemblies, ordinary metal materials and simplified structures are often used, but this leads to poor contact stability and a limited number of insertion and removal cycles, thereby shortening the service life of the electrical connection terminal assemblies.

[0004] It is evident that existing electrical connection terminal assemblies suffer from the problem of failing to effectively balance the lifespan of the connection and the manufacturing cost. Summary of the Invention

[0005] The purpose of this invention is to provide an electrical connection terminal assembly that solves the problem of difficulty in effectively balancing the service life of the connection and the manufacturing cost in existing electrical connection terminal assemblies.

[0006] To achieve this objective, the present invention adopts the following technical solution: An electrical connection terminal assembly includes a connector, the connector including a connection body and a connection plate disposed at one end of the connection body, the connection body being used to plug into an external charging male connector, and the connection plate being used to solder to a cable; The connecting body is provided with a transition ring that connects to the connecting plate. The connecting body has a plurality of elastic contact arms spaced apart along its circumference. Limiting members are sleeved on the plurality of elastic contact arms. The connecting body is provided with an opening between two adjacent elastic contact arms. The end of the connecting body away from the connecting plate is covered with an installation member. The inner wall of the installation member abuts against the limiting member. When the external charging male connector is inserted into the connector body, the elastic contact arm contacts the external charging male connector and expands outward, while the limiting member applies pressure to the elastic contact arm.

[0007] Optionally, the elastic contact arm is provided with an abutment groove, and the limiting member includes a limiting ring that contacts the inner wall of the mounting member. The limiting ring has a plurality of inwardly bent hooks distributed along its circumference, which are pressed against the abutment groove.

[0008] Optionally, the abutment groove is connected to the two side walls of the elastic contact arm along its circumference, the abutment groove is provided with a first contact surface, and the inner hook is provided with a second contact surface adapted to the first contact surface.

[0009] Optionally, the mounting component includes a mounting body arranged in a circular shape, the inner wall of the mounting body contacting the outer walls of the limiting member and the connecting body respectively, and the mounting body having a plurality of inner bends distributed circumferentially for abutting against the elastic contact arm.

[0010] Optionally, the mounting body is provided with at least one connecting groove, and the mounting body is provided with a connecting protrusion that engages with the connecting groove; the mounting body is bent into a ring structure by engaging the connecting protrusion with the connecting groove.

[0011] Optionally, the outer wall of the mounting body is provided with protrusions, the mounting body has a hollow hole, and the mounting body is provided with a spring piece located at the hollow hole and inclined outward.

[0012] Optionally, the connecting body is provided with a first opening and a second opening, and the mounting body is provided with a first pressing plate that presses against the first opening and a second pressing plate that presses against the second opening, wherein the distance from the first pressing plate to the opening seam is less than the distance from the second pressing plate to the opening seam.

[0013] Optionally, the connecting body is provided with a third opening corresponding to the first opening, and the mounting body is provided with a third pressure plate that presses against the third opening, wherein the distance from the third pressure plate to the opening seam is greater than the distance from the second pressure plate to the opening seam.

[0014] Optionally, the number of the first pressing plate, the second pressing plate, and the third pressing plate are all two, the two first openings and the two second openings are distributed opposite to each other on the connecting body, and the two third pressing plates are pressed against each other in the third openings.

[0015] Optionally, the connecting body is provided with a sealing element for separating and sealing the connecting plate, the sealing element being injection molded onto the connecting body using liquid silicone; the connecting body is provided with an arc-shaped support portion, and the sealing element covers the support portion.

[0016] Compared with the prior art, the present invention has the following beneficial effects: This invention provides an electrical connection terminal assembly. By circumferentially spaced, a plurality of elastic contact arms are arranged on the connecting body, and limiting members are fitted onto these elastic contact arms. When a charging male connector is inserted, the elastic contact arms can achieve stable elastic deformation under the action of the limiting members, thereby enhancing the contact reliability between the connector and the charging male connector. Simultaneously, the limiting members provide limiting support for the elastic contact arms, preventing elastic deformation from exceeding the elastic limit and extending the insertion life of the electrical connection terminal assembly. Furthermore, the connecting body has an open slot, which facilitates the flexible deformation of the elastic contact arms, further improving contact stability. Through structural optimization of the electrical connection terminal assembly, an effective balance between high performance and low cost is achieved, avoiding the high manufacturing cost problem caused by the use of precious metal materials, and reducing the overall manufacturing cost while ensuring contact performance. Therefore, this invention solves the problem of existing electrical connection terminal assemblies that are difficult to effectively balance insertion life and manufacturing cost. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] The structures, proportions, sizes, etc., shown in the accompanying drawings of this specification are only for the purpose of assisting those skilled in the art in understanding and reading the content disclosed in the specification, and are not intended to limit the conditions under which the present invention can be implemented. Therefore, they have no substantial technical significance. Any modifications to the structure, changes in the proportions, or adjustments to the size, without affecting the effects and objectives that the present invention can produce, should still fall within the scope of the technical content disclosed in the present invention.

[0019] Figure 1 A three-dimensional structural schematic diagram of an electrical connection terminal assembly provided in an embodiment of the present invention; Figure 2 This is a schematic diagram of a first partial structure of an electrical connection terminal assembly provided in an embodiment of the present invention; Figure 3 This is a schematic diagram of a second partial structure of an electrical connection terminal assembly provided in an embodiment of the present invention; Figure 4 This is an exploded view of an electrical connection terminal assembly provided in an embodiment of the present invention; Figure 5 A three-dimensional structural diagram of a connector in an electrical connection terminal assembly provided in an embodiment of the present invention; Figure 6This is a schematic diagram of the structure of a mounting component in an electrical connection terminal assembly provided in an embodiment of the present invention; Figure 7 This is a schematic diagram of the structure of a limiting member in an electrical connection terminal assembly provided in an embodiment of the present invention.

[0020] Illustration: 10. Connector; 11. Connecting body; 111. Elastic contact arm; 1111. Abutment groove; 1112. First contact surface; 112. Opening slot; 113. First opening; 114. Second opening; 115. Third opening; 12. Connecting plate; 13. Transition ring; 14. Support part; 20. Limiting component; 21. Limiting ring; 22. Inner fold hook; 221. Second contact surface; 30. Mounting component; 31. Mounting body; 311. Connecting groove; 312. Connecting protrusion; 313. Hollow hole; 32. Inner bend; 33. Protrusion; 34. Spring piece; 35. First pressure plate; 36. Second pressure plate; 37. Third pressure plate; 40. Sealing components. Detailed Implementation

[0021] To make the objectives, features, and advantages of this invention more apparent and understandable, the technical solutions of the embodiments of this invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the embodiments described below are only some embodiments of this invention, and not all embodiments. Based on the embodiments of this invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this invention.

[0022] In the description of this invention, it should be understood that the terms "upper," "lower," "top," "bottom," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing the invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the invention. It should be noted that when a component is considered to be "connected" to another component, it can be directly connected to the other component or there may be a component positioned centrally in the connection.

[0023] The technical solution of the present invention will be further described below with reference to the accompanying drawings and specific embodiments.

[0024] This invention provides an electrical connection terminal assembly, such as... Figures 1 to 7As shown, it includes a connector 10, which includes a connector body 11 and a connector plate 12 disposed at one end of the connector body 11. The connector body 11 is used to plug into an external charging male connector, and the connector plate 12 is used to weld to a cable. The connecting body 11 is provided with a transition ring 13 connected to the connecting plate 12. The connecting body 11 has a plurality of elastic contact arms 111 distributed at intervals along its circumference. Limiting members 20 are sleeved on the plurality of elastic contact arms 111. The connecting body 11 is provided with an opening slit 112 located between two adjacent elastic contact arms 111. The end of the connecting body 11 away from the connecting plate 12 is covered with a mounting member 30. The inner wall of the mounting member 30 abuts against the limiting member 20. When the external charging male connector is inserted into the connector body 11, the elastic contact arm 111 contacts the external charging male connector and expands outward, while the limiting member 20 applies pressure to the elastic contact arm 111. In this embodiment, the connector 10 is made of high-conductivity copper material, and the limiting member 20 and the mounting member 30 are both made of stainless steel.

[0025] It should be noted that the electrical connection terminal assembly provided by the present invention, by circumferentially arranging a plurality of elastic contact arms 111 on the connecting body 11 and sleeved with limiting members 20 on the plurality of elastic contact arms 111, allows the elastic contact arms 111 to achieve stable elastic deformation under the action of the limiting members 20 when the charging male is inserted, thereby enhancing the contact reliability between the connector 10 and the charging male. At the same time, the limiting members 20 provide limiting support for the elastic contact arms 111, preventing the elastic deformation from exceeding the elastic limit and extending the insertion life of the electrical connection terminal assembly. In addition, the connecting body 11 is provided with an opening slit 112, which helps the elastic contact arms 111 to deform flexibly and further improves the contact stability. Through the structural optimization of the electrical connection terminal assembly, an effective balance between high performance and low cost is achieved, avoiding the high manufacturing cost problem caused by the use of precious metal materials, and reducing the overall manufacturing cost while ensuring contact performance. Therefore, the present invention solves the problem of the difficulty in effectively balancing the insertion life and manufacturing cost in the prior art of electrical connection terminal assemblies.

[0026] like Figures 1 to 5 As shown, the elastic contact arm 111 is provided with an abutment groove 1111, and the limiting member 20 includes a limiting ring 21 that contacts the inner wall of the mounting member 30. The limiting ring 21 has a plurality of inwardly bent hooks 22 distributed along its circumference, which bend inward toward the inner side of the limiting ring 21. The inwardly bent hooks 22 are pressed against the abutment groove 1111. The inwardly bent hooks 22 and the limiting ring 21 are integrally formed.

[0027] When the external charging male connector is inserted, the elastic contact arm 111 can reliably expand and maintain stable contact. Since the limiting member 20 abuts against the inner wall of the mounting member 30, and the limiting member 20 engages with the abutment groove 1111 on the elastic contact arm 111 via the inner folded hook 22, it effectively provides radial limiting support for the elastic contact arm 111, preventing permanent deformation due to repeated insertion and removal, thereby significantly improving the elastic recovery performance and insertion life of the elastic contact arm 111. The inner folded hook 22 of the limiting ring 21 is evenly distributed circumferentially and integrally formed with the limiting ring 21, which helps improve structural strength and production efficiency, avoiding processing errors and assembly difficulties caused by multi-part assembly. Combined with the design of the opening slot 112, the elastic contact arm 111 deforms more flexibly during insertion, further enhancing contact stability. Through the above structural design, while ensuring high-reliability electrical contact, the dependence on high-cost materials (such as precious metals) is reduced, achieving an effective balance between insertion life and manufacturing cost.

[0028] like Figures 1 to 7 As shown, the abutment groove 1111 and the elastic contact arm 111 are connected to the two side walls along its circumference. The abutment groove 1111 is provided with a first contact surface 1112, and the inner hook 22 is provided with a second contact surface 221 that is adapted to the first contact surface 1112.

[0029] In practice, the first contact surface 1112 within the abutment groove 1111 is adapted to and engaged with the second contact surface 221 on the inner hook 22, resulting in a curved surface press-fit between the contact surfaces. This significantly improves the contact fit and stress stability. Compared to point or line contact, this surface contact method can effectively distribute the load, reduce local stress concentration, and further enhance the mechanical reliability and durability of the limiting structure.

[0030] like Figure 2 and Figure 6 As shown, the mounting component 30 includes a mounting body 31 arranged in a circular shape. The inner wall of the mounting body 31 contacts the outer wall of the limiting component 20 and the connecting body 11, respectively. The mounting body 31 has a plurality of inner bends 32 distributed circumferentially for abutting against the elastic contact arm 111.

[0031] In this embodiment, the inner wall of the mounting body 31 contacts both the limiting member 20 and the outer wall of the connecting body 11, forming a multi-layered covering limiting structure. This significantly improves the overall structure's tightness and assembly stability, preventing axial displacement or loosening of the limiting member 20 during long-term use. Since the mounting body 31 has several circumferentially curved portions 32 that directly abut against the elastic contact arm 111, it provides effective circumferential limiting and deformation constraint for the elastic contact arm 111. This helps maintain a stable deformation path for the elastic contact arm 111 during insertion and removal, preventing offset or warping, thereby improving contact accuracy and insertion consistency.

[0032] like Figures 1 to 6 As shown, the mounting body 31 is provided with at least one connecting groove 311, and the mounting body 31 is provided with a connecting protrusion 312 that is engaged with the connecting groove 311; the mounting body 31 is bent into a ring structure by engaging the connecting protrusion 312 with the connecting groove 311.

[0033] In practical implementation, by providing a connecting groove 311 and a corresponding snap-fit ​​connecting protrusion 312 on the mounting body 31, the mounting body 31 is reliably bent into a ring structure from its unfolded state. This snap-fit ​​structure allows the mounting part 30 to achieve self-positioning and self-locking without the aid of additional fasteners or welding, improving installation efficiency and simplifying the production process. The snap-fit ​​cooperation between the connecting groove 311 and the connecting protrusion 312 ensures the overall closure and rigidity of the mounting body 31 after forming, preventing limit failure or structural cracking due to loosening or misalignment, thus improving assembly accuracy and stability during long-term use. Simultaneously, this structural design facilitates material cutting, transportation, and pre-assembly, improving part versatility and production flexibility, and reducing overall manufacturing costs.

[0034] like Figure 6 As shown, the outer wall of the mounting body 31 is provided with a protrusion 33, the mounting body 31 is provided with a hollow hole 313, and the mounting body 31 is provided with a spring piece 34 located at the hollow hole 313 and inclined outward.

[0035] It should be noted that by providing protrusions 33, hollow holes 313, and outwardly inclined spring pieces 34 on the outer wall of the mounting body 31, the positioning, anti-rotation, and anti-detachment performance of the mounting body 31 during installation are further optimized. The outer wall protrusions 33 can cooperate with the shell or corresponding limiting structure during assembly to achieve preliminary axial and radial positioning, preventing rotation or displacement. The hollow hole 313 design makes the mounting body 31 structure lighter and facilitates the molding and processing of the spring pieces 34. The spring pieces 34, located at the hollow holes 313 and inclined outward, can generate radial elastic force during installation. The spring pieces 34 make pre-compression contact with the shell or limiting structure, thereby enhancing the fastening stability and vibration resistance of the mounting body 31. The spring pieces 34 not only act as a buffer to prevent damage to the structure from severe impacts during installation, but also absorb certain assembly tolerances, improve assembly adaptability, and enhance the overall reliability and service life of the product. Through the above structural design, high reliability, high adaptability, and low cost structural optimization are achieved without significantly increasing manufacturing complexity.

[0036] like Figures 2 to 5 As shown, the connecting body 11 is provided with a first opening 113 and a second opening 114, and the mounting body 31 is provided with a first pressing plate 35 that presses against the first opening 113 and a second pressing plate 36 that presses against the second opening 114. The distance from the first pressing plate 35 to the opening slit 112 is less than the distance from the second pressing plate 36 to the opening slit 112.

[0037] In specific implementation, by setting a first opening 113 and a second opening 114 on the connecting body 11, and setting corresponding first pressure plates 35 and second pressure plates 36 on the mounting body 31, the pressure plates are respectively pressed and engaged with the openings, thereby forming multi-point support and positioning for the connecting body 11 and enhancing the deformation resistance of the connecting structure. Specifically, the first pressure plate 35 is closer to the opening 112 and mainly acts near the elastic contact area, providing initial limiting support; the second pressure plate 36 is farther from the opening 112 and provides remote auxiliary pressure control, thus forming a graded limiting structure. By arranging pressure plates at different distances, differentiated support control can be achieved, allowing for more precise adjustment of the deformation path and stress state of the elastic contact arm 111 during insertion and extraction, avoiding stress concentration, and improving the uniformity of deformation and recovery performance of the elastic contact arm 111. At the same time, this structural design is simple, facilitating molding and assembly, and effectively improving assembly consistency and the dynamic stability of the overall structure. This structure has significant advantages in improving the insertion and removal life of terminal assemblies, maintaining electrical contact stability, and resisting mechanical fatigue, which helps electrical connection terminal assemblies maintain excellent performance over a long period of time under repeated use and complex environments.

[0038] like Figures 2 to 6As shown, the connecting body 11 is provided with a third opening 115 corresponding to the first opening 113, and the mounting body 31 is provided with a third pressing plate 37 that is pressed against the third opening 115. The distance from the third pressing plate 37 to the opening slit 112 is greater than the distance from the second pressing plate 36 to the opening slit 112.

[0039] It should be noted that the further arrangement of the third opening 115 and the third pressure plate 37 constitutes a three-point distributed limiting and pressing structure. The distance between each pressure plate and the opening slit 112 increases progressively, with the first pressure plate 35 being closest to the opening slit 112, the second pressure plate 36 in the middle, and the third pressure plate 37 furthest away, forming a stepped support layout. This structure achieves progressive rigid constraint and elastic guidance for the elastic contact arm 111 during insertion and removal, making the stress on each area more uniform during deformation and effectively reducing the risk of premature fatigue or permanent deformation due to local stress concentration. Especially under high-frequency insertion and removal or vibration conditions, this multi-point pressure control design can significantly enhance the deformation stability and fatigue resistance of the structure. In addition, the three-pressure plate structure also improves the interlocking strength and anti-loosening capability between the mounting body 31 and the connecting body 11, enabling the electrical connection terminal assembly to maintain excellent conductivity while having a longer service life and higher structural reliability.

[0040] like Figures 2 to 6 As shown, the number of the first pressing plate 35, the second pressing plate 36 and the third pressing plate 37 are all set to two. The two first openings 113 and the two second openings 114 are distributed opposite to each other on the connecting body 11, and the two third pressing plates 37 are pressed into the third openings 115.

[0041] In this embodiment, since there are two of each of the first pressure plate 35, the second pressure plate 36, and the third pressure plate 37, this symmetrical double-pressure plate structure not only improves the mechanical symmetry and installation consistency of the assembly, but also significantly optimizes the force balance of the elastic contact arm 111 during insertion and removal. Through the symmetrically distributed multi-stage pressing structure, the torsion, deformation, or localized stress concentration of the connecting body 11 caused by uneven force on one side can be effectively reduced, further enhancing the structural stability and fatigue resistance of the electrical connection terminal assembly under repeated insertion and removal and mechanical impact.

[0042] like Figures 1 to 4 As shown, the connecting body 11 is provided with a sealing element 40 for separating and sealing the connecting plate 12. The sealing element 40 is injection molded onto the connecting body 11 using liquid silicone. The connecting body 11 is provided with an arc-shaped support portion 14, and the sealing element 40 covers the support portion 14.

[0043] It should be noted that by providing a sealing element 40 on the connecting body 11, the connecting plate 12 can be effectively separated and sealed, preventing external contaminants such as dust, moisture, and oil from intruding into the connection area and ensuring the long-term stable operation of the charging interface. The sealing element 40 is injection molded from liquid silicone, which can tightly bond with the connecting body 11 to form a high-strength, highly elastic sealing layer, improving sealing reliability and weather resistance. By providing an arc-shaped support portion 14 on the connecting body 11, the sealing element 40 covers the support portion 14, forming a stable interlocking structure. This not only enhances the mechanical locking force between the sealing element 40 and the connecting body 11 but also improves the sealing element 40's resistance to detachment and its holding force under complex environments such as long-term thermal expansion and contraction, vibration, and impact. This invention significantly improves the protection level, insulation performance, and environmental resistance of the electrical connection terminal assembly, ensuring that the electrical connection terminal assembly still has excellent stability and service life under harsh conditions such as outdoor, high humidity, and high dust, further expanding the application scenarios and engineering reliability of the electrical connection terminal assembly.

[0044] Working Principle: The electrical connection terminal assembly provided by this invention features a plurality of elastic contact arms 111 spaced circumferentially around a connecting body 11, with limiting members 20 fitted onto each elastic contact arm 111. When the charging male connector is inserted, the elastic contact arms 111 can achieve stable elastic deformation under the action of the limiting members 20, thereby enhancing the contact reliability between the connector 10 and the charging male connector. Simultaneously, the limiting members 20 provide limiting support for the elastic contact arms 111, preventing elastic deformation from exceeding the elastic limit and extending the insertion life of the electrical connection terminal assembly. Furthermore, the connecting body 11 has an opening slit 112, which facilitates the flexible deformation of the elastic contact arms 111, further improving contact stability. Through structural optimization of the electrical connection terminal assembly, an effective balance between high performance and low cost is achieved, avoiding the high manufacturing cost problem caused by the use of precious metal materials, and reducing overall manufacturing costs while ensuring contact performance. Therefore, this invention solves the problem of existing electrical connection terminal assemblies that struggle to effectively balance insertion life and manufacturing cost.

[0045] The above-described embodiments are only used to illustrate the technical solutions of the present invention, and are not intended to limit it. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. An electrical connection terminal assembly, characterized in that, Includes a connector (10), the connector (10) includes a connector body (11) and a connector plate (12) disposed at one end of the connector body (11), the connector body (11) is used to be plugged into an external charging male connector, and the connector plate (12) is used to be soldered to a cable; The connecting body (11) is provided with a transition ring (13) connected to the connecting plate (12). The connecting body (11) has a plurality of elastic contact arms (111) spaced apart along its circumference. Limiting members (20) are sleeved on the plurality of elastic contact arms (111). The connecting body (11) is provided with an opening slit (112) located between two adjacent elastic contact arms (111). The end of the connecting body (11) away from the connecting plate (12) is covered with an installation member (30). The inner wall of the installation member (30) abuts against the limiting member (20). When the external charging male connector is inserted into the connecting body (11), the elastic contact arm (111) contacts the external charging male connector and expands outward, while the limiting member (20) applies pressure to the elastic contact arm (111).

2. The electrical connection terminal assembly according to claim 1, characterized in that, The elastic contact arm (111) is provided with an abutment groove (1111), and the limiting member (20) includes a limiting ring (21) that contacts the inner wall of the mounting member (30). The limiting ring (21) has a plurality of inner hooks (22) that bend toward the inner side of the limiting ring (21) along its circumference. The inner hooks (22) are pressed against the abutment groove (1111).

3. The electrical connection terminal assembly according to claim 2, characterized in that, The abutment groove (1111) is connected to the elastic contact arm (111) along its two circumferential side walls. The abutment groove (1111) is provided with a first contact surface (1112), and the inner hook (22) is provided with a second contact surface (221) that is adapted to the first contact surface (1112).

4. The electrical connection terminal assembly according to any one of claims 1 to 3, characterized in that, The mounting component (30) includes a mounting body (31) arranged in a circular shape. The inner wall of the mounting body (31) is in contact with the outer wall of the limiting component (20) and the connecting body (11), respectively. The mounting body (31) has a plurality of inner bends (32) distributed circumferentially for abutting against the elastic contact arm (111).

5. The electrical connection terminal assembly according to claim 4, characterized in that, The mounting body (31) is provided with at least one connecting groove (311), and the mounting body (31) is provided with a connecting protrusion (312) that is engaged with the connecting groove (311); the mounting body (31) is bent into a ring structure by engaging the connecting protrusion (312) with the connecting groove (311).

6. The electrical connection terminal assembly according to claim 4, characterized in that, The outer wall of the mounting body (31) is provided with a protrusion (33), the mounting body (31) is provided with a hollow hole (313), and the mounting body (31) is provided with a spring piece (34) located at the hollow hole (313) and inclined outward.

7. The electrical connection terminal assembly according to claim 5, characterized in that, The connecting body (11) is provided with a first opening (113) and a second opening (114). The mounting body (31) is provided with a first pressing plate (35) that presses against the first opening (113) and a second pressing plate (36) that presses against the second opening (114). The distance from the first pressing plate (35) to the opening seam (112) is less than the distance from the second pressing plate (36) to the opening seam (112).

8. The electrical connection terminal assembly according to claim 7, characterized in that, The connecting body (11) is provided with a third opening (115) corresponding to the first opening (113), and the mounting body (31) is provided with a third pressure plate (37) that is pressed against the third opening (115). The distance from the third pressure plate (37) to the opening seam (112) is greater than the distance from the second pressure plate (36) to the opening seam (112).

9. The electrical connection terminal assembly according to claim 8, characterized in that, The number of the first pressing plate (35), the second pressing plate (36) and the third pressing plate (37) are all set to two. The two first openings (113) and the two second openings (114) are distributed opposite to each other on the connecting body (11), and the two third pressing plates (37) are pressed into the third opening (115).

10. The electrical connection terminal assembly according to claim 1, characterized in that, The connecting body (11) is provided with a sealing element (40) for separating and sealing the connecting plate (12). The sealing element (40) is injection molded onto the connecting body (11) using liquid silicone. The connecting body (11) is provided with an arc-shaped support part (14), and the sealing element (40) covers the support part (14).

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