Long-service-life stable type spring contact finger probe connector
By introducing annular grooves and dovetail baffle structures into the spring-loaded finger probe connector, combined with compression springs and fixing seats, the problem of unstable contact when different models of equipment are connected is solved, achieving stable multi-point contact and efficient electrical connection.
Patent Information
- Application Number
- CN202422896245.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-26
- Publication Date
- 2025-10-28
- Estimated Expiration
- 2034-11-26
AI Technical Summary
Existing spring-loaded probe connectors suffer from uneven contact surfaces when mating with different types of equipment, leading to unstable electrical connections and low power-carrying efficiency.
A high-life, stable spring-fingered probe connector was designed, which uses a spring-fingered finger in an annular groove and a dovetail-shaped baffle structure, combined with a compression spring and a fixing seat, to ensure that the spring-fingered finger makes multi-point contact with the docking device, and achieves a stable connection through the reaction force of the compression spring.
It achieves stable and reliable flexible contact at multiple points, improving the stability and power carrying capacity of the connection, and adapting to the electrical connection needs of different types of equipment.
Smart Images
Figure CN223487388U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of spring-loaded finger probe connector technology, and specifically to a high-life-cycle stable spring-loaded finger probe connector. Background Technology
[0002] Spring-loaded probe connectors are precision electrical connection devices that integrate conductivity, elasticity, and wear resistance. They are widely used in various electrical devices that require frequent insertion and removal or withstand significant mechanical stress. It consists of multiple components, including the probe shaft, spring-loaded fingers, a mounting base, and a compression spring. Its core design lies in the internal compression spring structure, which gives the probe excellent contact stability and self-recovery capability. Specifically, when an external device mates with the spring-loaded fingers, the fingers are compressed and undergo elastic deformation, and with the reaction force of the compression spring, they are tightly pressed against the contact surface of the other device, achieving a low-resistance, high-reliability electrical connection.
[0003] However, when existing spring-fingered probe connectors make electrical contact with the mating device, the position of the spring-fingered fingers remains fixed. Since the contact surfaces of different models and types of mating devices are different, there is an uneven contact surface during mating, resulting in an unstable connection. For different mating devices, it cannot provide a stable and reliable electrical connection, has low power-carrying efficiency, and cannot meet the usage requirements. Utility Model Content
[0004] To address the shortcomings of the existing technology, this utility model provides a high-lifespan, stable spring-loaded probe connector with a simple structure and stable connection. It can achieve multi-point stable and reliable flexible contact for different types of docking equipment, and has strong power transmission capability to meet usage requirements.
[0005] To achieve the above objectives, the technical solution adopted by this utility model is as follows:
[0006] A high-life, stable spring-loaded probe connector includes a probe rod with a mounting end at the top. An annular groove is provided within the mounting end, and a spring-loaded finger is mounted within the annular groove, with the top of the spring-loaded finger extending out of the annular groove. An inwardly contracting dovetail-shaped baffle is provided at the opening of the annular groove, resting against the spring-loaded finger. A mounting base is provided on the probe rod, and a compression spring is provided between the mounting base and the mounting end. One end of the compression spring rests against the bottom of the mounting end, and the other end rests against the mounting base.
[0007] In the above description, as a preferred embodiment, the spring contact finger is provided with a C-shaped steel ring.
[0008] In the above description, as a preferred embodiment, the fixing base includes an annular fixing plate and a mounting sleeve. Both the annular fixing plate and the mounting sleeve are fitted over the probe rod. The probe rod is provided with a retaining spring, which is located at the bottom of the mounting sleeve. The mounting sleeve is provided with a fixing external thread, through which a fixing base mounting nut is installed.
[0009] In the above description, as a preferred embodiment, the tail of the probe rod is provided with a second external thread, and a terminal mounting nut is provided on the second external thread.
[0010] In the above description, preferably, both the probe rod and the spring contact finger are made of highly conductive copper alloy material.
[0011] In the above description, preferably, the mounting base is made of engineering plastic.
[0012] In the above description, preferably, both the retaining ring and the terminal mounting nut are made of copper.
[0013] In the above description, preferably, both the compression spring and the mounting nut of the fixing seat are made of stainless steel.
[0014] The beneficial effects of this invention are as follows: A spring contact finger is installed in the annular groove, with the top of the spring contact finger extending out of the annular groove, making the spring contact finger higher than the end face of the probe rod. An inwardly contracting dovetail-shaped baffle is provided at the opening of the annular groove, which abuts against the spring contact finger, effectively blocking it and preventing it from falling off due to elastic deformation under pressure, thus improving the stability of the spring contact finger and extending the product life. A fixing seat is provided on the probe rod, and a compression spring is provided between the fixing seat and the mounting end. One end of the compression spring abuts against the bottom of the mounting end, and the other end abuts against the fixing seat. During operation, the reaction force of the compression spring ensures that the spring contact finger, which is higher than the end face of the probe rod, has dozens of contact points with the docking equipment. Each contact point is a current channel for transmitting current. For different types of docking equipment, multi-point stable and reliable flexible contact can be achieved, with strong current carrying capacity, meeting usage requirements. Attached Figure Description
[0015] Figure 1 : This is a structural schematic diagram of an embodiment of the present utility model;
[0016] Figure 2 This is an exploded structural diagram of an embodiment of the present invention;
[0017] Figure 3 : This is a cross-sectional structural schematic diagram of an embodiment of the present utility model;
[0018] Figure 4 This is an embodiment of the present utility model. Figure 3 Enlarged structural diagram of section A;
[0019] Figure 5 : This is a schematic diagram of the terminal connection structure according to an embodiment of the present utility model;
[0020] Explanation of reference numerals in the attached diagram: 10-Probe rod, 11-Mounting end, 12-Annular groove, 13-C-shaped steel ring, 14-Dovetail baffle, 15-Card slot, 16-Card spring, 17-Second external thread, 18-Terminal mounting nut, 19-Spring contact finger, 20-Fixing seat, 21-Annular fixing plate, 22-Mounting sleeve, 23-Fixing external thread, 24-Fixing seat mounting nut, 30-Compression spring, 40-Terminal. Detailed Implementation
[0021] To more clearly illustrate the structural features, technical means, and specific objectives and functions achieved by this utility model, the following detailed description is provided in conjunction with the accompanying drawings and specific embodiments:
[0022] This embodiment: as follows Figure 1-5 As shown, a high-life, stable spring-fingered probe connector includes a probe rod 10, with a mounting end 11 at the top of the probe rod 10. An annular groove 12 is provided within the mounting end 11, and a spring-fingered finger 19 is mounted within the annular groove 12. Both the probe rod 10 and the spring-fingered finger 19 are made of highly conductive copper alloy. The top of the spring-fingered finger 19 extends out of the annular groove 12, making the spring-fingered finger 19 higher than the end face of the probe rod 10. A C-shaped steel ring 13 is provided within the spring-fingered finger 19. The C-shaped steel ring 13 enhances the structural strength of the spring-fingered finger 19 and also provides additional support by expanding the spring-fingered finger 19 outwards.
[0023] The opening of the annular groove 12 is provided with an inwardly tapering dovetail-shaped baffle 14. The dovetail-shaped baffle 14 abuts against the spring contact finger 19, which can effectively block the spring contact finger 19, prevent the spring contact finger 19 from being compressed and deformed during use, thus preventing it from falling off or displacing, and improving the stability of the spring contact finger 19 installation.
[0024] The probe rod 10 is provided with a fixing seat 20, which is made of engineering plastic. A compression spring 30, made of stainless steel, is provided between the fixing seat 20 and the mounting end 11. The fixing seat 20 includes an annular fixing plate 21 and a mounting sleeve 22, both of which are fitted over the probe rod 10. A retaining spring 16, made of copper, is installed on the probe rod 10 through a retaining groove 15. The retaining spring 16 is located at the bottom of the mounting sleeve 22 and is used to limit the position of the mounting sleeve 22. One end of the compression spring 30 abuts against the mounting end 11. At the bottom, the other end of the compression spring 30 abuts against the annular fixing plate 21. With the reaction force of the compression spring 30, the probe rod 10 and the spring contact finger 19 are tightly pressed against the contact surface of the docking equipment. The mounting sleeve 22 is provided with a fixing external thread 23. The fixing seat mounting nut 24 is installed through the fixing external thread 23. The fixing seat mounting nut 24 is made of stainless steel. The fixing seat mounting nut 24 is screwed on the first external thread to realize the fastening installation of the fixing seat 20, which facilitates the replacement of the compression spring 30 and thus improves the service life of the overall connector.
[0025] The probe rod 10 has a second external thread 17 at its tail end, and a terminal mounting nut 18 is provided on the second external thread 17. The terminal mounting nut 18 is made of copper and is used to connect external wires or terminals 40 to complete the overall circuit connection. The second external thread 17 and the tail terminal mounting nut 18 cooperate to achieve a firm threaded connection.
[0026] During operation, the reaction force of the compression spring 30 ensures that the spring contact finger 19, which is higher than the end face of the probe rod 10, has dozens of contact points with the contact surface of the docking equipment. Each contact point is a current channel to transmit current. For different types of docking equipment, it can also achieve multi-point stable and reliable flexible contact, with strong power carrying capacity to meet the usage requirements.
[0027] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model. Therefore, any modifications, equivalent substitutions, improvements, etc., made to the above embodiments based on the technical solution of the present utility model shall still fall within the scope of the technical solution of the present utility model.
Claims
1. A high-lifespan, stable spring-loaded probe connector, including a probe shaft, characterized in that: The probe rod has a mounting end at the top, and an annular groove inside the mounting end. A spring contact finger is installed in the annular groove, with the top of the spring contact finger extending out of the annular groove. An inwardly contracting dovetail-shaped baffle is provided at the opening of the annular groove, and the dovetail-shaped baffle abuts against the spring contact finger. A fixing seat is provided on the probe rod, and a compression spring is provided between the fixing seat and the mounting end. One end of the compression spring abuts against the bottom of the mounting end, and the other end of the compression spring abuts against the fixing seat.
2. The high-lifespan stable spring-loaded probe connector according to claim 1, characterized in that: The spring contact finger has a C-shaped steel ring inside.
3. The high-lifespan stable spring-loaded probe connector according to claim 1, characterized in that: The mounting base includes an annular fixing plate and a mounting sleeve. Both the annular fixing plate and the mounting sleeve are fitted over the probe rod. The probe rod is equipped with a retaining spring, which is located at the bottom of the mounting sleeve. The mounting sleeve is provided with a fixing external thread, through which the mounting nut of the mounting base is installed.
4. The high-lifespan stable spring-loaded probe connector according to claim 1, characterized in that: The probe rod has a second external thread at its tail, and a terminal mounting nut is provided on the second external thread.
5. The high-lifespan stable spring-loaded probe connector according to any one of claims 1-4, characterized in that: Both the probe rod and the spring contact finger are made of highly conductive copper alloy.
6. The high-lifespan stable spring-loaded probe connector according to any one of claims 1-4, characterized in that: The mounting base is made of engineering plastic.
7. The high-lifespan stable spring-loaded probe connector according to any one of claims 1-4, characterized in that: Both the retaining ring and the terminal mounting nut are made of copper.
8. The high-lifespan stable spring-loaded probe connector according to any one of claims 1-4, characterized in that: Both the compression spring and the mounting nut of the fixing seat are made of stainless steel.