Contact terminal structure with self-locking function
By designing a contact terminal structure with a self-locking function, and using a locking plate that matches a conical head and annular conical surface, the self-locking and easy insertion and removal of the pin terminal and the socket terminal are achieved. This solves the problems of difficult debugging and poor maintainability at the internal and external electrical cross-linking points of traditional thermal batteries, and improves contact reliability and maintenance efficiency.
Patent Information
- Application Number
- CN202512004665.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-12-29
- Publication Date
- 2026-03-03
AI Technical Summary
The welding, debugging, and separation of the pin terminals at the internal and external electrical cross-linking points of traditional thermal batteries are difficult, resulting in poor maintainability, messy layout, and easy rework failures.
Design a contact terminal structure with self-locking function. The pin terminal and the socket terminal are engaged by a tapered head and annular tapered surface. The locking plate realizes self-locking and easy insertion and removal. With the alignment design of the cut surface and the locking plate, reliable electrical contact and convenient separation are achieved.
It improves the reliability and maintainability of the contact terminals, reduces the rework failure rate in the production process, and simplifies the debugging and separation process.
Smart Images
Figure CN121602171A_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of electrical interconnection of thermal batteries, and in particular to a contact terminal structure with a self-locking function. Background Technology
[0002] Currently, traditional thermal batteries achieve electrical cross-linking by drilling holes in pin terminals and then welding wires through the holes at high temperatures. This method is difficult to separate during debugging, has poor maintainability, and results in a cluttered layout that hinders overall assembly. A contact structure is needed that can guarantee reliable electrical contact at high temperatures and can be plugged in and disconnected during debugging. This would reduce rework and repair failures caused by errors during production and improve the system's maintainability. Summary of the Invention
[0003] In view of this, this application provides a contact terminal structure with a self-locking function, which solves the problems in the prior art and improves the reliability of contact terminal connections.
[0004] The contact terminal structure with self-locking function provided in this application adopts the following technical solution: A contact terminal structure with a self-locking function includes a socket terminal and a pin terminal. The pin terminal is used to insert into the inner wall of the socket terminal. The side wall of the socket terminal is provided with an inwardly inclined locking piece. The part of the pin terminal that inserts into the socket terminal includes a conical head and a main body rod. The conical head is the end of the pin terminal facing the socket terminal, and the end of the conical head facing the socket terminal is the small diameter end. The main body rod has an annular groove on the outer periphery of the end near the conical head. The inner wall of the annular groove away from the conical head is an annular conical surface, and the small diameter end of the annular conical surface is the end near the conical head. When the pin terminal is inserted into the socket terminal, the locking piece abuts against the annular conical surface, and the innermost side of the locking piece abuts against the wall of the annular groove near the conical head.
[0005] Optionally, the conical head and the main body rod have a mating surface on the portion of the annular groove facing the conical head, and the distance between the center of the mating surface and the axis of the pin terminal is less than the minimum radius of the annular groove.
[0006] Optionally, the pin terminal is mounted on the pin housing, the socket terminal is mounted on the socket housing, the pin housing is provided with a first marking point, and the socket housing is provided with a second marking point. When the first marking point and the second marking point are aligned in the circumferential direction of the socket terminal, the mating surface and the locking piece are aligned.
[0007] Optionally, the socket terminal includes a socket body and an annular spring sheet surrounding the outer periphery of the socket body. The locking piece is located on the annular spring sheet. The socket body has a window for the locking piece to pass through. The locking piece and the annular spring sheet are integrally formed. The locking piece is formed by bending the structure within the U-shaped segmentation contour inward after forming a U-shaped segmentation contour on the annular spring sheet. The two opposite contour lines of the U-shaped segmentation contour are parallel to the length direction of the socket terminal. The side of the locking piece near the end face of the socket terminal facing the pin terminal is connected to the annular spring sheet.
[0008] Optionally, the main body of the socket is made of copper alloy, and the annular spring with locking plate is made of stainless steel by stamping.
[0009] Optionally, the pin terminal is made of high-temperature Kovar alloy with a temperature resistance range of 20–600℃.
[0010] In summary, this application includes the following beneficial technical effects: When the pin terminal is inserted into the socket terminal, the locking plate abuts against the annular conical surface, and the innermost side of the locking plate abuts against the wall of the annular groove near the conical head, achieving self-locking between the socket terminal and the pin terminal. Simultaneously, the slit design allows for easy insertion and removal of the contact terminal. Attached Figure Description
[0011] To more clearly illustrate the technical solutions of the embodiments of this application, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0012] Figure 1 A schematic diagram of a contact terminal structure with a self-locking function; Figure 2 This is a schematic diagram of the main body of the socket.
[0013] Explanation of reference numerals in the attached drawings: 1. Socket terminal; 11. Socket body; 12. Annular spring plate; 13. Window; 14. Locking plate; 2. Pin terminal; 21. Main body rod; 22. Conical head; 23. Annular groove; 24. Annular conical surface; 25. Mating surface. Detailed Implementation
[0014] The embodiments of this application will now be described in detail with reference to the accompanying drawings.
[0015] The following specific examples illustrate the implementation of this application. Those skilled in the art can easily understand other advantages and effects of this application from the content disclosed in this specification. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of them. This application can also be implemented or applied through other different specific embodiments, and the details in this specification can also be modified or changed based on different viewpoints and applications without departing from the spirit of this application. It should be noted that, in the absence of conflict, the following embodiments and features in the embodiments can be combined with each other. 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.
[0016] It should be noted that various aspects of embodiments within the scope of the appended claims are described below. It will be apparent that the aspects described herein can be embodied in a wide variety of forms, and any particular structure and / or function described herein is merely illustrative. Based on this application, those skilled in the art will understand that one aspect described herein can be implemented independently of any other aspect, and two or more of these aspects can be combined in various ways. For example, any number of aspects set forth herein can be used to implement the device and / or practice the method. Additionally, this device and / or method can be implemented using structures and / or functionalities other than one or more of the aspects set forth herein.
[0017] It should also be noted that the illustrations provided in the following embodiments are only schematic representations of the basic concept of this application. The illustrations only show the components related to this application and are not drawn according to the number, shape and size of the components in actual implementation. In actual implementation, the form, quantity and proportion of each component can be arbitrarily changed, and the layout of the components may also be more complex.
[0018] Furthermore, specific details are provided in the following description to facilitate a thorough understanding of the examples. However, those skilled in the art will understand that the described aspects can be practiced without these specific details.
[0019] This application provides a contact terminal structure with a self-locking function.
[0020] like Figure 1 and Figure 2As shown, a contact terminal structure with a self-locking function includes a socket terminal 1 and a pin terminal 2. The pin terminal 2 is used to insert into the inner wall of the socket terminal 1. The side wall of the socket terminal 1 is provided with an inwardly inclined locking piece 14. The part of the pin terminal 2 that inserts into the socket terminal 1 includes a conical head 22 and a main body rod 21. The conical head 22 is the end of the pin terminal 2 facing the socket terminal 1. The end of the conical head 22 facing the socket terminal 1 is the small-diameter end. The main body rod 21 has an annular groove 23 on the outer periphery of the end near the conical head 22. The inner wall of the annular groove 23 away from the conical head 22 is an annular conical surface 24, and the small-diameter end of the annular conical surface 24 is the end near the conical head 22. When the pin terminal 2 is inserted into the socket terminal 1, the locking piece 14 abuts against the annular conical surface 24, and the innermost side of the locking piece 14 abuts against the wall of the annular groove 23 near the conical head 22, thereby achieving self-locking of the socket terminal 1 and the pin terminal 2.
[0021] The conical head 22 and the main body rod 21 have a mating surface 25 on the portion of the annular groove 23 facing the conical head 22. The distance between the center of the mating surface 25 and the axis of the pin terminal 2 is less than the minimum radius of the annular groove. When the mating surface 25 is aligned with the locking plate 14, the conical head 22 can easily pass through the locking plate 14, allowing the annular groove 23 to reach its position. Then, after rotating the socket terminal 1 or the pin terminal 2, the locking plate 14 and the mating surface 25 are misaligned, achieving self-locking of the socket terminal 1 and the pin terminal 2. When separating the socket terminal 1 and the pin terminal 2, the socket terminal 1 or the pin terminal 2 is rotated to align the mating surface 25 with the locking plate 14. Since the conical surface is more convex than the center of the mating surface 25, the socket terminal 1 and the pin terminal 2 can be easily separated.
[0022] The pin terminal 2 is mounted on the pin housing, the socket terminal 1 is mounted on the socket housing, the pin housing is provided with a first marking point, and the socket housing is provided with a second marking point. When the first marking point and the second marking point are aligned in the circumferential direction of the socket terminal 1, the mating surface 25 and the locking piece 14 are aligned.
[0023] The socket terminal 1 includes a socket body 11 and an annular spring sheet 12 surrounding the outer periphery of the socket body 11. The locking piece 14 is located on the annular spring sheet 12. The socket body 11 is provided with a window 13 for the locking piece 14 to pass through. The locking piece 14 and the annular spring sheet 12 are integrally formed. The locking piece 14 is formed by bending the structure within the U-shaped segmentation contour inward after forming a U-shaped segmentation contour on the annular spring sheet 12. The two opposite contour lines of the U-shaped segmentation contour are parallel to the length direction of the socket terminal 1. The side of the locking piece 14 near the end face of the socket terminal 1 facing the pin terminal 2 is connected to the annular spring sheet 12.
[0024] The main body 11 of the socket is made of copper alloy, and the annular spring plate 12 with locking plate 14 is made of stainless steel by stamping.
[0025] The pin terminal 2 is made of high-temperature Kovar alloy, with a temperature resistance range of 20–600℃. In this embodiment, the high-temperature Kovar alloy is 4J29 / Kovar, an iron-nickel-cobalt alloy that has a low coefficient of thermal expansion matching glass / ceramics in the temperature range of 20–450℃. It can maintain structural stability and sealing performance in high-temperature environments, and still maintain high mechanical strength at 500–600℃, with a tensile strength of up to 400 MPa and a melting point of about 1450℃.
[0026] In this application, both the pin terminal 2 and the socket terminal 1 are made of high-temperature resistant materials. The annular spring sheet 12 in the socket terminal 1 assembly can provide reliable contact positive pressure in high-temperature environments. The pin terminal 2 is made of high-temperature Kovar alloy, which can ensure that the strength under high-temperature conditions is not easily deformed or creeped, thus achieving high-temperature resistance.
[0027] The above description is merely a specific embodiment of this application, but the scope of protection of this application is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.
Claims
1. A contact terminal structure with a self-locking function, characterized in that, The device includes a socket terminal (1) and a pin terminal (2). The pin terminal (2) is used to insert into the inner wall of the socket terminal (1). The side wall of the socket terminal (1) is provided with an inwardly inclined locking piece (14). The part of the pin terminal (2) that inserts into the socket terminal (1) includes a conical head (22) and a main body rod (21). The conical head (22) is the end of the pin terminal (2) facing the socket terminal (1). The end of the conical head (22) facing the socket terminal (1) is the small diameter end. The main body rod (21) has an annular groove (23) on the outer periphery of the end near the conical head (22). The inner wall of the annular groove (23) away from the conical head (22) is an annular conical surface (24), and the small diameter end of the annular conical surface (24) is the end near the conical head (22). When the pin terminal (2) is inserted into the socket terminal (1), the locking piece (14) abuts against the annular conical surface (24), and the innermost side of the locking piece (14) abuts against the wall of the annular groove (23) near the conical head (22).
2. The contact terminal structure with self-locking function according to claim 1, characterized in that, The conical head (22) and the main rod (21) are provided with a mating surface (25) on the part of the annular groove (23) facing the conical head (22). The distance between the center of the mating surface (25) and the axis of the pin terminal (2) is less than the minimum radius of the annular groove.
3. The contact terminal structure with self-locking function according to claim 1, characterized in that, The pin terminal (2) is mounted on the pin housing, and the socket terminal (1) is mounted on the socket housing. The pin housing is provided with a first marking point, and the socket housing is provided with a second marking point. When the first marking point and the second marking point are aligned in the circumferential direction of the socket terminal (1), the mating surface (25) and the locking piece (14) are aligned.
4. The contact terminal structure with self-locking function according to claim 1, characterized in that, The socket terminal (1) includes a socket body (11) and an annular spring plate (12) surrounding the outer periphery of the socket body (11). The locking plate (14) is located on the annular spring plate (12). The socket body (11) is provided with a window (13) through which the locking plate (14) passes. The locking plate (14) and the annular spring plate (12) are integrally formed. The locking plate (14) is formed by bending the structure inside the U-shaped segmentation contour inward after forming a U-shaped segmentation contour on the annular spring plate (12). The two opposite contour lines of the U-shaped segmentation contour are parallel to the length direction of the socket terminal (1). The locking plate (14) is connected to the annular spring plate (12) on the side of the end face of the socket terminal (1) facing the pin terminal (2).
5. The contact terminal structure with self-locking function according to claim 4, characterized in that, The main body of the socket (11) is made of copper alloy material, and the ring spring plate (12) with locking plate (14) is made of stainless steel stamping.
6. The contact terminal structure with self-locking function according to claim 1, characterized in that, The pin terminal (2) is made of high-temperature Kovar alloy with a temperature range of 20–600℃.