Plug-in type male terminal of new energy automobile

Abstract

The utility model relates to a new energy automobile plug-in type male terminal in the terminal field, comprising terminal substrates, one end of each terminal substrate is provided with a plug-in pin, the number of the terminal substrates is two, one ends of the two terminal substrates are connected through a connecting pin, the middle section of the connecting pin is bent to form the plug-in pin, the two terminal substrates are parallel to each other, and the plug-in pin is arranged between the two terminal substrates. A positioning part, an inserting part and a guide section are sequentially arranged from one end, close to the terminal substrate, of the inserting pin to one end, far away from the terminal substrate, of the inserting pin, the guide section is composed of two symmetrical guide inclined planes, the positioning part is two symmetrical positioning grooves, openings of the positioning grooves are far away from each other, and the positioning grooves are used for clamping and meshing of a female end. Two-way occlusion is formed through the positioning grooves with the openings far away from each other and the female terminal clamping part, a multi-point locking effect is generated after plugging, terminal axial displacement or loosening caused by vehicle driving vibration or external force impact is prevented, and long-term reliable contact of the connector under complex working conditions is ensured.

Description

Technical Field

[0001] This utility model relates to the field of terminals, and in particular to plug-in male terminals for new energy vehicles. Background Technology

[0002] With the rapid development of the new energy vehicle industry, high-voltage electrical connection systems place higher demands on the reliability of connector terminals. As a core connection device between high-voltage components such as battery packs and motors, male terminals must maintain stable conductivity under complex operating conditions such as frequent insertion and removal, continuous high-current transmission, and vehicle vibration. Traditional new energy vehicle male terminals mostly adopt a single-plate plug-in structure, which has a low degree of integration in its guiding, positioning functions and elastic contact pressure adjustment mechanism. During long-term use, stress concentration can easily lead to deformation of the plug-in part, or increased contact resistance due to vibration, resulting in abnormal temperature rise, arc damage, and other safety hazards, directly affecting the operating efficiency and safety of the vehicle's high-voltage system.

[0003] Existing plug-in male terminals have insufficient stress dispersion. Conventional guide sections use a single bevel or right-angle transition design, which causes a hard collision between the female and male terminals in the initial stage of insertion, resulting in stress concentration at the root of the guide section. This can easily lead to cracking or plastic deformation of the terminal substrate, significantly shortening the insertion and extraction life. The locking and vibration resistance performance is poor, and the single planar positioning groove structure is difficult to form a bidirectional interlocking force. Under vehicle bumpy conditions, axial movement is prone to occur, leading to increased fretting wear at the contact interface. Utility Model Content

[0004] In order to overcome the shortcomings of existing technical solutions, this utility model provides a plug-in male terminal for new energy vehicles, which can effectively solve the technical problems of poor vibration resistance and easy loosening.

[0005] The technical solution adopted by this utility model to solve its technical problem is:

[0006] A plug-in male terminal for new energy vehicles includes a terminal base plate. One end of the terminal base plate is provided with a plug-in pin. Two terminal base plates are provided, and one end of the two terminal base plates is connected by a connecting pin. The middle section of the connecting pin is bent to form a plug-in pin. The two terminal base plates are parallel to each other. The plug-in pin consists of a positioning part, a plug-in part, and a guide section from the end closer to the terminal base plate to the end farther away from the terminal base plate. The guide section is composed of two symmetrical guide slopes. The ends of the two guide slopes away from the plug-in part are connected to form a stress buffer angle. The plug-in part is composed of two parallel pin base plates. A buffer gap for deformation allowance is formed between the two pin base plates. The positioning part is two symmetrical positioning grooves with their openings far apart. The positioning grooves are used for the female end to clamp and engage.

[0007] Furthermore, the surfaces of both pin substrates are provided with reinforcing ribs extending along the length direction.

[0008] Furthermore, the positioning groove is V-shaped, and the angle between the inclined surface of the positioning groove near the insertion part and the insertion part is smaller than the angle between the inclined surface of the positioning groove away from the insertion part and the terminal substrate.

[0009] Furthermore, an elastic connection portion is provided between the positioning portion and the terminal substrate. The elastic connection portion can contract inward when subjected to pressure, so that the positioning portion and the insertion portion move closer to each other.

[0010] Furthermore, an elastic support portion is connected between the two pin substrates, and the elastic support portion is arc-shaped.

[0011] Furthermore, the two terminal substrates are attached to each other on their adjacent sides and connected by bolts, and the surface of the terminal substrates is provided with wiring holes.

[0012] Compared with the prior art, the beneficial effects of this utility model are as follows: The guide section adopts a symmetrically distributed guide slope and a stress buffer angle design formed at the end, which guides the female terminal to slide in along the preset path during the insertion process. The insertion and extraction stress is gradually dispersed by the slope component force, avoiding terminal deformation or breakage caused by stress concentration, which significantly improves the insertion stability and cycle service life. The insertion part provides deformation margin by a buffer gap formed by two parallel pin substrates. When the female terminal is clamped, the contact pressure is adaptively adjusted by the elastic deformation of the gap, ensuring that a uniformly distributed clamping force is formed between the contact surface of the two pin substrates and the female terminal after insertion. This effectively solves the problem of poor contact caused by tolerance or vibration in traditional rigid connectors, and improves conductivity stability. The positioning groove with mutually spaced openings forms a bidirectional engagement with the female terminal clamping component, which generates a multi-point locking effect after insertion, preventing axial displacement or loosening of the terminal caused by vehicle vibration or external impact, and ensuring long-term reliable contact of the connector under complex working conditions. Attached Figure Description

[0013] Figure 1 This is a front view schematic diagram of the present invention;

[0014] Figure 2 This is a top view of the present invention;

[0015] The numbers in the diagram are: 1-terminal base plate, 2-plug pin, 3-positioning part, 4-plug part, 5-guide section, 6-stress buffer angle, 7-buffer gap, 8-positioning groove, 9-reinforcing rib, 10-elastic support part, 11-wiring hole, 12-elastic connection part. Detailed Implementation

[0016] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0017] The following is combined Figures 1-2 The present invention provides a detailed description of the plug-in male terminal for new energy vehicles:

[0018] A new energy vehicle plug-in male terminal includes a terminal base plate 1. One end of the terminal base plate 1 is provided with a plug-in pin 2. There are two terminal base plates 1, and the edges of the two terminal base plates 1 are connected by connecting feet. The middle section of the connecting feet is bent to form the plug-in pin 2. The two terminal base plates 1 are parallel to each other. The plug-in pin 2 consists of a positioning part 3, a plug-in part 4, and a guide section 5 from the end closer to the terminal base plate 1 to the end farther away from the terminal base plate 1. The guide section 5 is composed of two symmetrical guide slopes. The ends of the two guide slopes away from the plug-in part 4 are connected to form a stress buffer angle 6. The plug-in part 4 is composed of two parallel pin base plates. A buffer gap 7 for deformation allowance is formed between the two pin base plates. The positioning part 3 consists of two symmetrical positioning grooves 8. The openings of the positioning grooves 8 are far apart. The positioning grooves 8 are used for the female end clamping engagement.

[0019] The guide section 5 adopts a symmetrically distributed guide slope and a stress buffer angle 6 formed at the end. During the insertion process, it guides the female terminal to slide in along a preset path. The insertion and extraction stress is gradually dispersed by the component force of the slope, avoiding terminal deformation or breakage caused by stress concentration. This significantly improves the insertion stability and cycle life. The insertion part 4 provides deformation margin by a buffer gap 7 formed by two parallel pin substrates. When the female terminal is clamped, the contact pressure is adaptively adjusted by the elastic deformation of the gap. This ensures that a uniformly distributed clamping force is formed between the contact surface of the two pin substrates and the female terminal after insertion. This effectively solves the problem of poor contact caused by tolerance or vibration in traditional rigid connectors and improves conductivity stability. The positioning grooves 8 with mutually spaced openings form a bidirectional engagement with the female terminal clamping component. After insertion, a multi-point locking effect is generated to prevent axial displacement or loosening of the terminal caused by vehicle vibration or external impact. This ensures long-term reliable contact of the connector under complex working conditions.

[0020] Both lead substrates have reinforcing ribs 9 extending along their length on their surfaces. By providing longitudinal reinforcing ribs 9 on the lead substrate surfaces, the bending stiffness of the lead substrates is significantly improved, preventing plastic deformation of the substrates caused by high current transmission or frequent insertion and removal. At the same time, the extended layout of the reinforcing ribs 9 optimizes the current distribution path on the substrate surface, reduces local resistance, and further improves conductivity stability.

[0021] The positioning groove 8 is V-shaped. The angle between the inclined surface of the positioning groove 8 near the insertion part 4 and the insertion part 4 is smaller than the angle between the inclined surface of the positioning groove 8 away from the insertion part 4 and the terminal base plate 1, which enhances the locking force and increases the force required when pulling out.

[0022] An elastic connecting part 12 is also provided between the positioning part 3 and the terminal substrate 1. The elastic connecting part 12 can contract inward when subjected to pressure, so that the positioning part 3 and the insertion part 4 are closer to each other. The elastic connecting part 12 provides a dynamic contraction function during the insertion process. When pressure is applied to the female terminal, the relative position of the positioning part 3 and the insertion part 4 is adaptively adjusted by elastic deformation to compensate for the misalignment of the contact surface caused by manufacturing tolerances or insertion misalignment, ensuring that the clamping force of the two pin substrates on the female terminal is evenly distributed and avoiding unilateral overload. An elastic support part 10 is connected between the two pin substrates. The elastic support part 10 is arc-shaped. The arc-shaped elastic support part 10 utilizes the deformation rebound characteristics of the arc structure to provide uniform radial support force during insertion. It maintains the preset width of the buffer gap 7 and avoids stress concentration at the root of the support part through the stress dispersion effect of the arc surface, extending the elastic fatigue life and ensuring that the insertion part 4 can still recover the initial elastic force after repeated insertion and removal.

[0023] The two terminal substrates 1 are bonded together on their adjacent sides and connected by bolts. The surface of each terminal substrate 1 has wiring holes 11. The rigid connection of the two terminal substrates 1 via bolts forms redundant conductive paths, significantly reducing contact resistance and the risk of temperature rise. Simultaneously, the bolt preload can precisely adjust the fit between the substrates, eliminating the impact of assembly errors on insertion accuracy. The surface wiring holes 11 enable rapid crimping and fixing of wires, simplifying the assembly process and enhancing the reliability of current transmission.

[0024] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A male terminal of a plug-in type for a new energy vehicle, comprising a terminal substrate, one end of the terminal substrate being provided with a plug-in pin, characterized in that: The terminal base plate consists of two pieces, with one end of each piece connected by a connecting pin. The middle section of the connecting pin is bent to form a plug-in pin. The two terminal base plates are parallel to each other. The plug-in pin consists of a positioning part, a plug-in part, and a guide section, arranged sequentially from the end closest to the terminal base plate to the end furthest from the terminal base plate. The guide section is composed of two symmetrical guide slopes, with the ends of the two guide slopes furthest from the plug-in part connected to form a stress buffer angle. The plug-in part is composed of two parallel pin base plates, with a buffer gap between the two pin base plates for deformation allowance. The positioning part consists of two symmetrical positioning grooves with their openings furthest from each other. The positioning grooves are used for the engagement of the female end clamping.

2. The new energy vehicle plug-in male terminal according to claim 1, characterized in that: The surfaces of both pin substrates are provided with reinforcing ribs extending along the length direction.

3. The new energy vehicle plug-in male terminal according to claim 1, characterized in that: The positioning groove is V-shaped, and the angle between the inclined surface of the positioning groove near the plug-in part and the plug-in part is smaller than the angle between the inclined surface of the positioning groove away from the plug-in part and the terminal substrate.

4. The new energy vehicle plug-in male terminal according to any one of claims 1-3, characterized in that: An elastic connection portion is also provided between the positioning portion and the terminal substrate. When the elastic connection portion is subjected to pressure, it can contract inward, so that the positioning portion and the insertion portion move closer to each other.

5. The new energy vehicle plug-in male terminal according to any one of claims 1-3, characterized in that: An elastic support portion is connected between the two pin substrates, and the elastic support portion is arc-shaped.

6. The new energy vehicle plug-in male terminal according to any one of claims 1-3, characterized in that: The two terminal base plates are attached to each other on their adjacent sides and connected by bolts. The surface of the terminal base plates is provided with wiring holes.

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