A high-reliability wear-resistant switch contact assembly of a multi-layer composite structure

Abstract

The utility model relates to the field of high reliable wear -resisting switch contact assembly of multilayer composite structure discloses a kind of high reliable wear -resisting switch contact assembly of multilayer composite structure, including lower shell and upper shell, static core is fixed in the lower shell inner bottom middle, static core middle fixed excitation coil, reset spring is fixed in the upper end surface of excitation coil, fixed head is fixed in the upper part of reset spring, the upper end of fixed head is fixed with insulating seat, multiple movable contacts are fixed in the both sides of insulating seat, static contact is fixed in the lower part of movable contact, wear -resisting contact point is fixed in the both ends of movable contact and static contact, the upper part of insulating seat is fixed with upper shell, movable block is fixed in the upper end middle of upper shell, multiple external contact heads are fixed in the both sides of movable block.The utility model, by upper shell and lower shell, play a protective role, by multiple wear -resisting contact points and connecting structure, play the role of convenient maintenance replacement parts, improve the practicability of device.

Description

Technical Field

[0001] This utility model relates to the field of high reliability and wear-resistant switch contact assemblies with multi-layer composite structures, and particularly to a high reliability and wear-resistant switch contact assembly with a multi-layer composite structure. Background Technology

[0002] The switch contact assembly is the core component of a switching device, and its performance directly affects the performance and lifespan of the switching device. Therefore, it is very important to design a highly reliable and wear-resistant switch contact assembly with a multi-layer composite structure. Currently, traditional switch contact assemblies are more commonly used in production and daily life.

[0003] Traditional switch components often use exposed contact fixing methods and mostly use traditional contacts. Therefore, the contacts are prone to wear and damage during repeated use. Because they are fixed by a single welding method, maintenance and replacement are very difficult. At the same time, because no protective structure is used, the internal structure is easily damaged during the use of the device, which can cause safety hazards and affect normal production and life.

[0004] Therefore, those skilled in the art have provided a highly reliable wear-resistant switch contact assembly with a multi-layer composite structure to solve the problems mentioned in the background art. Utility Model Content

[0005] The purpose of this utility model is to overcome the shortcomings of the existing technology and provide a high-reliability wear-resistant switch contact assembly with a multi-layer composite structure. The upper and lower shells protect the internal structure of the device, improving its safety. The multiple wear-resistant contacts enhance the stability and extend the service life of the device. The fixing holes and mounting holes facilitate maintenance and replacement of parts, providing better convenience and practicality.

[0006] To achieve the above objectives, this utility model provides the following technical solution: A high-reliability wear-resistant switch contact assembly with a multi-layer composite structure includes a lower housing and an upper housing. A stationary iron core is fixed in the middle of the bottom of the lower housing. An excitation coil is fixed in the middle of the stationary iron core. A return spring is fixed on the upper end face of the excitation coil. A fixed head is fixed on the upper part of the return spring. An insulating seat is fixed on the upper end of the fixed head. Multiple moving contacts are fixed on both sides of the insulating seat. A stationary contact is fixed below the moving contact. Wear-resistant contacts are fixed at both ends of the moving and stationary contacts. An upper housing is fixed on the upper part of the insulating seat. A movable block is fixed in the middle of the upper end of the upper housing. Multiple external contact heads are fixed on both sides of the movable block. The above technical solution utilizes an upper and lower housing to protect the internal structure of the device. A stationary iron core secures the excitation coil, which, when energized, attracts the moving iron core, enabling the device to be powered on. A return spring supports the upper insulating base, keeping the wear-resistant contacts normally open when power is off. A fixing head secures the return spring, and the insulating base secures the moving and stationary contacts, ensuring normal power-on functionality. The moving and wear-resistant contacts control the device's switching by regulating their contact with the stationary contacts. A movable block provides better visibility into the contact status of the internal wear-resistant contacts, allowing for more precise device control.

[0007] Furthermore, a fixing groove is provided in the middle of the lower housing, and slots are provided on both sides of the lower housing; and buckles are fixed on both sides of the lower housing. The above technical solution uses a fixed groove to fix the stationary iron core and a slot and buckle to connect and fix the upper and lower housings.

[0008] Furthermore, the upper part of the insulating base has multiple mounting holes on both sides, and a fixing spring is fixed inside one side of the mounting hole. The lower part of the insulating base has fixing openings on both sides, and an auxiliary contact is fixed inside the fixing hole at one end of the insulating base. The above technical solution uses mounting holes to fix the spring and moving contact, fixing ports to fix the stationary contact, and auxiliary contacts to assist in use when contacts are damaged or insufficient, resulting in better stability and usability.

[0009] Furthermore, positioning grooves are provided on both sides of the upper housing, protrusions are fixed on both sides of the lower housing, and multiple threaded holes are provided on the upper surfaces of the upper and lower housings; The above technical solution uses positioning grooves and protrusions to connect and fix the upper housing, facilitating its installation. Threaded holes allow for the installation of fixing bolts, thus securing the upper housing and improving the device's stability.

[0010] Furthermore, a mounting groove is provided in the middle of the upper end face of the upper housing, and sliding grooves are provided on both sides of the mounting groove; The above technical solution uses an installation slot to fix the movable block and a sliding groove to allow the movable block to slide while restricting its movement.

[0011] Furthermore, a moving iron core is fixed on both sides of the excitation coil, a magnetic ring is fixed on both sides of the excitation coil, and a fixing block is fixed on both sides of the stationary iron core; The above technical solution uses a magnetic ring and a fixing block to connect and fix the excitation coil, while eliminating the vibration and noise generated by the moving iron core during use.

[0012] Furthermore, a fixing plate is fixed to the lower part of the stationary contact, and fixing seats are fixed to both sides of the bottom end of the insulating base; The above technical solution uses a fixed plate to support the stationary contact, preventing excessive bending or even breakage of the stationary contact during use, thus improving the safety and stability of the device.

[0013] Furthermore, fixing holes are provided at both ends of the moving contact and the stationary contact, and fixing holes are also provided on both sides of the movable block; The above technical solution, through the setting of fixing holes, facilitates the fixing of wear-resistant contacts and external contact heads, and at the same time facilitates repair and replacement when wear-resistant contacts and external contact heads are damaged, thus having better convenience and practicality.

[0014] This utility model has the following beneficial effects: 1. This utility model proposes a multi-layer composite structure for a highly reliable wear-resistant switch contact assembly. The upper and lower housings protect the internal structure of the device, improving its safety. The stationary iron core fixes the excitation coil. When energized, the excitation coil alters the magnetic field, causing the stationary iron core to attract the moving iron core, thus enabling the device to be energized and providing better controllability. The return spring supports the upper insulating base, keeping the wear-resistant contacts normally open when de-energized, further enhancing safety. The moving contact and wear-resistant contacts control the device's switching action by controlling the contact between the moving and stationary contacts, improving stability and extending service life.

[0015] 2. This utility model proposes a multi-layer composite structure high-reliability wear-resistant switch contact assembly. Through the provided slots and buckles, it connects and fixes the upper and lower housings. Simultaneously, the positioning slots and protrusions facilitate the connection and installation of the upper housing. The threaded holes allow for the installation of fixing bolts, improving the stability of the device. The magnetic ring and fixing block connect and fix the excitation coil, while eliminating vibration and noise generated by the moving iron core during use, thus improving practicality. The fixing holes facilitate the fixing of wear-resistant contacts and external contact heads, and also facilitate repair and replacement when the wear-resistant contacts and external contact heads are damaged, providing better convenience and practicality. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of a high-reliability wear-resistant switch contact assembly with a multi-layer composite structure proposed in this utility model; Figure 2 This is a schematic diagram of the upper housing structure of a multi-layer composite high-reliability wear-resistant switch contact assembly proposed in this utility model; Figure 3 This is a schematic diagram of the static iron core structure of a multi-layer composite high-reliability wear-resistant switch contact assembly proposed in this utility model. Figure 4 This is a schematic diagram of the lower housing structure of a multi-layer composite high-reliability wear-resistant switch contact assembly proposed in this utility model; Figure 5 This is a schematic diagram of the overall appearance of a high-reliability, wear-resistant switch contact assembly with a multi-layer composite structure proposed in this utility model.

[0017] Explanation of reference numerals in the attached figures: 1. Lower housing; 2. Stationary contact; 3. Wear-resistant contact; 4. Moving contact; 5. Fixing port; 6. Insulating base; 7. Slot; 8. Upper housing; 9. Movable block; 10. External contact; 11. Positioning slot; 12. Snap-fit; 13. Mounting hole; 14. Fixing spring; 15. Auxiliary contact; 16. Mounting slot; 17. Slide groove; 18. Stationary iron core; 19. Excitation coil; 20. Fixing block; 21. Magnetic ring; 22. Moving iron core; 23. Fixing base; 24. Fixing head; 25. Return spring; 26. Protrusion; 27. Threaded hole; 28. Fixing slot; 29. ​​Fixing plate; 30. Fixing hole. Detailed Implementation

[0018] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of specific embodiments. Obviously, the described specific embodiments are only a part of the specific embodiments of the present invention, and not all of them. Based on the specific embodiments of the present invention, all other specific embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0019] Reference Figure 1-3 This utility model provides a specific implementation method: A high-reliability, wear-resistant switch contact assembly with a multi-layer composite structure includes a lower housing 1 and an upper housing 8. A stationary iron core 18 is fixed in the middle of the bottom of the lower housing 1, serving to fix the excitation coil 19. When energized, the stationary iron core 18 attracts the moving iron core 22, enabling the device to be energized and providing better controllability. The excitation coil 19 is fixed in the middle of the stationary iron core 18, and a return spring 25 is fixed to the upper end face of the excitation coil 19, keeping the wear-resistant contact 3 in a normally open state when de-energized, providing better safety. A fixed head 24 is fixed to the upper part of the device 25. An insulating base 6 is fixed to the upper end of the fixed head 24. Multiple moving contacts 4 are fixed to both sides of the insulating base 6. A stationary contact 2 is fixed to the lower part of the moving contact 4. Wear-resistant contacts 3 are fixed to both ends of the moving contact 4 and the stationary contact 2. The device switches by controlling the contact with the wear-resistant contacts 3 on the stationary contact 2. An upper housing 8 is fixed to the upper part of the insulating base 6. A movable block 9 is fixed to the middle of the upper end of the upper housing 8. Multiple external contacts 10 are fixed to both sides of the movable block 9. The device energizes the internal coil.

[0020] Reference Figure 3-5 The lower housing 1 has a fixing groove 28 in the middle and slots 7 on both sides. Buckles 12 are fixed on both sides of the lower housing 1 to connect and fix the device, providing better safety. The upper part of the insulating base 6 has multiple mounting holes 13 on both sides. A fixing spring 14 is fixed inside one side of each mounting hole 13 to facilitate the movement of the moving contact 4, thus better controlling the switch of the device. The lower part of the insulating base 6 has fixing openings 5 ​​on both sides. An auxiliary contact 15 is fixed inside a fixing hole 30 at one end of the insulating base 6. The upper housing 8 has positioning grooves 11 on both sides, and protrusions 26 are fixed on both sides of the lower housing 1. Multiple mounting holes 13 are provided on the upper surfaces of the upper housing 8 and the lower housing 1. A threaded hole 27 serves to connect and fix the upper housing 8 and the lower housing 1, providing better stability. An installation groove 16 is provided in the middle of the upper end face of the upper housing 8, and sliding grooves 17 are provided on both sides of the installation groove 16. Moving iron cores 22 are fixed on both sides of the excitation coil 19, and magnetic rings 21 are fixed on both sides of the excitation coil 19. Fixing blocks 20 are fixed on both sides of the stationary iron core 18. A fixing plate 29 is fixed at the lower part of the stationary contact 2. Fixing seats 23 are fixed on both sides of the bottom end of the insulating seat 6. Fixing holes 30 are provided at both ends of the moving contact 4 and the stationary contact 2. Fixing holes 30 are also provided on both sides of the movable block 9, which facilitates maintenance and replacement, and provides better convenience and practicality.

[0021] Working principle: When in use, the stationary iron core 18 is fixed through the fixing slot 28, and the excitation coil 19 is fixed through the stationary iron core 18. The wear-resistant contact 3 and the external contact head 10 are installed and fixed through the fixing hole 30. The upper housing 8 and the lower housing 1 are connected and fixed through the buckle 12 and the slot 7. Then, the external contact head 10 is energized, which in turn energizes the excitation coil 19. At this time, the excitation coil 19 generates magnetism. Then, due to the magnetism and the return spring 25, the stationary iron core 18 attracts the downward moving iron core 22, which in turn drives the moving contact head 4 to move downward, thereby driving the wear-resistant contact 3 to make contact and realize the energizing function of the device.

[0022] The following points should be noted in this article: 1. The accompanying drawings of the embodiments disclosed herein only relate to the structures involved in the embodiments disclosed herein; other structures can be referred to in a general design.

[0023] 2. Where there is no conflict, the embodiments of this disclosure and the features in the embodiments can be combined with each other to obtain new embodiments.

[0024] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing specific embodiments, those skilled in the art can still modify the technical solutions described in the foregoing specific embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A high-reliability, wear-resistant switch contact assembly with a multi-layer composite structure, comprising a lower housing (1) and an upper housing (8), characterized in that: A stationary iron core (18) is fixed in the middle of the bottom of the lower housing (1). An excitation coil (19) is fixed in the middle of the stationary iron core (18). A reset spring (25) is fixed on the upper surface of the excitation coil (19). A fixing head (24) is fixed on the upper part of the reset spring (25). An insulating seat (6) is fixed on the upper end of the fixing head (24). Multiple moving contacts (4) are fixed on both sides of the insulating seat (6). A stationary contact (2) is fixed on the lower part of the moving contact (4). Wear-resistant contacts (3) are fixed at both ends of the moving contact (4) and the stationary contact (2). An upper housing (8) is fixed on the upper part of the insulating seat (6). A movable block (9) is fixed in the middle of the upper end of the upper housing (8). Multiple external contacts (10) are fixed on both sides of the movable block (9).

2. The high-reliability wear-resistant switch contact assembly with a multi-layer composite structure according to claim 1, characterized in that: The lower housing (1) has a fixing groove (28) in the middle, and the lower housing (1) has slots (7) on both sides. The lower housing (1) has buckles (12) fixed on both sides.

3. The high-reliability wear-resistant switch contact assembly with a multi-layer composite structure according to claim 1, characterized in that: The insulating base (6) has multiple mounting holes (13) on both sides of the upper part. A fixing spring (14) is fixed inside one side of the mounting hole (13). The insulating base (6) has fixing openings (5) on both sides of the lower part. An auxiliary contact (15) is fixed inside the fixing hole (30) at one end of the insulating base (6).

4. The high-reliability wear-resistant switch contact assembly with a multi-layer composite structure according to claim 1, characterized in that: The upper housing (8) has positioning grooves (11) on both sides, and the lower housing (1) has protrusions (26) fixed on both sides. The upper surfaces of the upper housing (8) and the lower housing (1) have multiple threaded holes (27).

5. A high-reliability, wear-resistant switch contact assembly with a multi-layer composite structure according to claim 1, characterized in that: The upper housing (8) has a mounting groove (16) in the middle of its upper end face, and sliding grooves (17) are provided on both sides of the mounting groove (16).

6. The high-reliability wear-resistant switch contact assembly with a multi-layer composite structure according to claim 1, characterized in that: The excitation coil (19) has a moving iron core (22) fixed on both sides, a magnetic ring (21) fixed on both sides, and a fixing block (20) fixed on both sides of the stationary iron core (18).

7. A high-reliability, wear-resistant switch contact assembly with a multi-layer composite structure according to claim 1, characterized in that: The stationary contact (2) is fixed with a fixing plate (29) at its lower part, and the insulating base (6) is fixed with fixing bases (23) on both sides of its bottom end.

8. A high-reliability, wear-resistant switch contact assembly with a multi-layer composite structure according to claim 1, characterized in that: The moving contact (4) and the stationary contact (2) are provided with fixing holes (30) at both ends, and the movable block (9) is also provided with fixing holes (30) on both sides.

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