Wear-resistant moving contact assembly
By using a spherical swingable structure and a reinforcing plate fixing design, the problem of insufficient contact caused by angular deviation in the moving contact assembly under frequent operation or high current impact is solved, resulting in lower contact resistance and less wear, and improved wear resistance and stability.
Patent Information
- Application Number
- CN202522095057.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-09-29
- Publication Date
- 2026-08-25
- Estimated Expiration
- 2035-09-29
AI Technical Summary
Existing wear-resistant moving contact components are prone to insufficient contact due to angular or positional deviations under frequent operation or high current impact, resulting in increased contact resistance, accelerated heating and wear, and reduced service life.
The design of the moving contact adopts a spherical swingable structure. The ball part of the moving contact can swing in the ball groove of the moving contact plate to compensate for the angle deviation. The front and rear moving contact plates are fixed by reinforcing plates and vertical pins to enhance mechanical strength and vibration resistance, and increase the contact area and contact stability.
It effectively compensates for insufficient contact between moving and stationary contacts, reduces contact resistance, minimizes localized wear, improves wear resistance and stability, and extends service life.
Smart Images
Figure CN224682953U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to a wear-resistant moving contact assembly. Background Technology
[0002] Moving contact assemblies are widely used in electrical equipment such as circuit breakers and contactors. Their main function is to work with stationary contact assemblies during circuit switching to reliably connect and disconnect current. Moving contact assemblies typically consist of a moving contact plate, a moving contact, and connecting parts. Under conditions of frequent operation or high current surges in electrical equipment, the stability, wear resistance, and conductivity reliability of the contact assembly are crucial. Existing wear-resistant moving contact assemblies generally suffer from the following problems: during equipment operation, moving contact assemblies are easily affected by external impacts or vibrations of the operating mechanism; angular or positional deviations often occur when the moving contact and stationary contact make contact, leading to insufficient contact, increased contact resistance, increased heat generation and wear, and reduced service life. Improvements and optimizations are needed to address these issues. Utility Model Content
[0003] To solve the above problems, the technical problem to be solved by this utility model is to provide a wear-resistant moving contact assembly.
[0004] The technical solution adopted by this utility model of wear-resistant moving contact assembly is characterized by comprising a front moving contact plate, a rear moving contact plate, a moving contact, and a horizontal pin. The front and rear moving contact plates are symmetrically arranged, each including a moving contact plate mounting portion. The left and right ends of the moving contact plate mounting portion extend horizontally to form moving contact plate contact portions. The moving contact plate contact portions are provided with horizontally arranged moving contact plate connecting holes. The moving contact includes a moving contact ball portion and a moving contact contact portion. The moving contact ball portion and the moving contact contact portion are connected by a moving contact connecting post. The moving contact plate contact portion is provided with a tool for the moving contact... The movable contact plate interface is provided with a contact connecting post, and the movable contact plate interface is provided with a movable contact plate ball groove for the movable contact ball part to be inserted. The movable contact ball part is oscillatingly disposed in the movable contact plate ball groove. The outer diameter of the movable contact connecting post is smaller than the inner diameter of the movable contact plate interface. The horizontal pin is inserted on the movable contact plate connecting hole, so that the front movable contact plate and the rear movable contact plate are fixed together. The movable contact ball part allows the movable contact to be finely adjusted at any time according to the positional deviation during contact, ensuring that the contact surface is flat and stable.
[0005] The connecting holes of the moving contact plate are located at both ends of the ball groove of the moving contact plate.
[0006] The moving contact contact portion is provided with spaced square grooves for moving contacts.
[0007] It also includes a reinforcing plate and a vertical pin. The bottom of the moving contact plate mounting part is provided with a square limiting groove for the moving contact plate. The center of the square limiting groove for the moving contact plate is provided with a positioning hole for the moving contact plate. The reinforcing plate is placed in the square limiting groove for the moving contact plate. The reinforcing plate fixes the front moving contact plate and the rear moving contact plate together through the vertical pin.
[0008] The outer end of the movable contact plate mounting part is provided with a movable contact plate positioning notch to facilitate anti-movement during installation.
[0009] The advantages of this wear-resistant moving contact assembly are: the spherical swingable structure can effectively compensate for the angular deviation of the moving contact under force or vibration, making the contact between the moving and stationary contacts more complete, the contact resistance lower, and at the same time reducing local wear and improving the overall wear resistance and stability. Attached Figure Description
[0010] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.
[0011] Figure 1 This is a front structural diagram of the wear-resistant moving contact assembly of this utility model; Figure 2 This is a schematic diagram of the back structure of the wear-resistant moving contact assembly of this utility model; Figure 3 This is a schematic diagram of the structure of the moving contact of this utility model; Figure 4 This is a schematic diagram of the structure of the front moving contact plate of this utility model. Detailed Implementation
[0012] like Figure 1-4As shown, the wear-resistant moving contact assembly of this utility model includes a front moving contact plate 1, a rear moving contact plate 2, a moving contact 3, and a horizontal pin 4. The front moving contact plate 1 and the rear moving contact plate 2 are symmetrically arranged, each including a moving contact plate mounting portion 8. The left and right ends of the moving contact plate mounting portion 8 extend horizontally to form moving contact plate contact portions 9. The moving contact plate contact portions 9 are provided with horizontally arranged moving contact plate connecting holes 16. The moving contact 3 includes a moving contact ball portion 10 and a moving contact contact portion 11. The moving contact ball portion 10 and the moving contact contact portion 11 are connected by a moving contact connecting post 12. The moving contact plate contact portion 9 is provided with a moving contact plate mating interface 14 for the moving contact connecting post 12 to pass through. The moving contact plate mating interface 14 is provided with a moving contact ball portion 10 for placement. The ball groove 15 of the moving contact plate ensures the positioning accuracy of the moving contact 3 and limits its range of movement, avoiding contact failure due to loosening. The ball part 10 of the moving contact is oscillatingly disposed in the ball groove 15 of the moving contact plate. The outer diameter of the moving contact connecting post 12 is smaller than the inner diameter of the moving contact plate interface 14. The horizontal pin 4 passes through the moving contact plate connecting hole 16, so that the front moving contact plate 1 and the rear moving contact plate 2 are fixed together, ensuring the overall mechanical strength, avoiding deformation caused by unilateral force, and enhancing the vibration resistance of the component. The spherical oscillating structure can effectively compensate for the angular deviation of the moving contact 3 under force or vibration, so that the moving and stationary contacts make more sufficient contact, the contact resistance is lower, and local wear is reduced, improving the overall wear resistance and stability.
[0013] The moving contact plate connection hole 16 is located at both ends of the moving contact plate ball groove 15.
[0014] The moving contact contact portion 11 is provided with spaced moving contact square grooves 17, which can increase the actual contact area, improve the current carrying capacity, and at the same time help reduce local heating and extend the contact life.
[0015] It also includes a reinforcing plate 5 and a vertical pin 6. The bottom of the moving contact plate mounting part 8 is provided with a square limiting groove 19 for the moving contact plate. The center of the square limiting groove 19 is provided with a moving contact plate positioning hole 18. The reinforcing plate 5 is placed in the square limiting groove 19. The reinforcing plate 5 fixes the front moving contact plate 1 and the rear moving contact plate 2 together through the vertical pin 6, which effectively improves the connection strength of the front moving contact plate 1 and the rear moving contact plate 2, prevents loosening caused by external impact or long-term operation, and improves the overall stability of the structure.
[0016] The moving contact plate mounting part 8 has a moving contact plate positioning recess 20 at its outer end to facilitate anti-displacement during installation, preventing the moving contact assembly from shifting in a vibration environment and improving the stability of the electrical connection.
[0017] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present utility model are included within the protection scope of the present utility model.
Claims
1. A wear-resistant moving contact assembly, characterized in that: The device includes a front movable contact plate (1), a rear movable contact plate (2), a movable contact (3), and a horizontal pin (4). The front movable contact plate (1) and the rear movable contact plate (2) are symmetrically arranged, and each includes a movable contact plate mounting part (8). The left and right ends of the movable contact plate mounting part (8) extend horizontally to form movable contact plate contact parts (9). The movable contact plate contact parts (9) are provided with horizontally arranged movable contact plate connecting holes (16). The movable contact (3) includes a movable contact ball part (10) and a movable contact contact part (11). The movable contact ball part (10) and the movable contact contact part (11) are connected by a movable contact connecting post (12). The movable contact plate is connected in a manner such that the movable contact plate contact part (9) is provided with a movable contact plate interface (14) through which the movable contact connecting post (12) passes. The movable contact plate interface (14) is provided with a movable contact plate ball groove (15) for the movable contact ball part (10) to be inserted. The movable contact ball part (10) is swayably disposed in the movable contact plate ball groove (15). The outer diameter of the movable contact connecting post (12) is smaller than the inner diameter of the movable contact plate interface (14). The horizontal pin (4) passes through the movable contact plate connecting hole (16) so that the front movable contact plate (1) and the rear movable contact plate (2) are fixed together.
2. The wear-resistant moving contact assembly according to claim 1, characterized in that: The moving contact plate connection hole (16) is located at both ends of the moving contact plate ball groove (15).
3. The wear-resistant moving contact assembly according to claim 1, characterized in that: The moving contact contact part (11) is provided with spaced moving contact square grooves (17).
4. The wear-resistant moving contact assembly according to claim 1, characterized in that: It also includes a reinforcing plate (5) and a vertical pin (6). The bottom of the moving contact plate mounting part (8) is provided with a moving contact plate square limiting groove (19). The center of the moving contact plate square limiting groove (19) is provided with a moving contact plate positioning hole (18). The reinforcing plate (5) is placed in the moving contact plate square limiting groove (19). The reinforcing plate (5) fixes the front moving contact plate (1) and the rear moving contact plate (2) together through the vertical pin (6).
5. The wear-resistant moving contact assembly according to claim 1, characterized in that: The outer end of the movable contact plate mounting part (8) is provided with a movable contact plate positioning notch (20) to facilitate anti-movement during installation.