Contact assembly for small contactor
By adopting a double contact design and silver cadmium oxide contact silver layer in the contact assembly for small contacts, the problem of vulnerability of existing contacts for small contacts is solved, extending service life, improving maintenance efficiency and reducing costs.
Patent Information
- Application Number
- CN202421297820.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-06-07
- Publication Date
- 2025-05-23
- Estimated Expiration
- 2034-06-07
AI Technical Summary
The existing contact assembly for small contactors is prone to damage after frequent use, especially the contacts, which leads to the need to replace the entire assembly, which is complicated in the process and high maintenance costs.
A contact assembly for small contactors is designed, adopting a dual contact design, including a contact frame, a contact point and a contact yoke. The contact frame and the yoke are connected by screws. The contacts are equipped with a spare silver layer, which is made of silver cadmium oxide.
Through the dual-contact design, the service life of the product is extended, and the entire dismantling is not required during maintenance, which improves maintenance efficiency and reduces replacement costs.
Smart Images
Figure CN222896658U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to a contact assembly for a small contactor. Background Art
[0002] Small contactors are a common electrical component, widely used in household circuits. Its working principle involves electromagnetic force, electromagnetic induction, circuit control and other aspects. The existing contact assembly for small contactors includes a contact plate, a contact point and a yoke, which are welded together. In actual use, it is found that the contact point is the most easily damaged due to frequent docking. However, once the contact point is damaged, the entire contact assembly needs to be replaced. The process is relatively complicated and the maintenance cost is high. Improvements and optimizations are made for this. Utility Model Content
[0003] In order to solve the above problems, the technical problem to be solved by the utility model is to provide a contact assembly for a small contactor.
[0004] The technical solution adopted by the contact assembly for a small contactor of the utility model is characterized in that it includes a contact frame, a contact point and a contactor yoke, the contact frame includes a contact frame docking plate and a contact frame mounting plate, the contact frame docking plate and the contact frame mounting plate are connected end to end in sequence to form a square structure, the contact frame docking plate is provided with a docking plate rivet hole for riveting the contact point, the front and rear ends of the middle part of the contact frame mounting plate are provided with a mounting plate docking recess, and the contact frame mounting plate is provided with a mounting plate threaded hole at the left and right ends of the mounting plate docking recess;
[0005] The contactor yoke includes a yoke body, and both ends of the yoke body are bent vertically upward to form an upper yoke mounting part and a lower yoke mounting part respectively. The upper yoke mounting part is provided with a first semicircular notch, and the lower yoke mounting part is provided with a second semicircular notch concentric with the first semicircular notch. The mounting plate docking recess is clamped on the side of the upper yoke mounting part, and the yoke body is provided with a yoke socket and a yoke threaded hole for inserting the contact frame docking plate. The contact frame is sleeved on the yoke body and the mounting plate threaded hole is connected to the yoke threaded hole by screws.
[0006] The end of the yoke body is bent vertically upward near the yoke threaded hole to form a yoke reinforcement plate.
[0007] The contact is provided with a contact silver layer, and the contact silver layer is made of silver cadmium oxide.
[0008] A yoke positioning protrusion is provided at one end of the yoke body away from the yoke threaded hole, and a yoke bayonet is provided on the upper mounting portion of the yoke.
[0009] The radius of the first semicircular notch is smaller than the radius of the second semicircular notch.
[0010] The length of the upper mounting portion of the yoke is greater than the length of the lower mounting portion of the yoke.
[0011] The advantages of the contact assembly for a small contactor of the utility model are: a double-contact design with spare contacts. When the contacts are damaged due to frequent contact, the spare contacts can be used by rotating the contact frame. On the one hand, the service life of the product can be effectively improved. On the other hand, when maintenance is required, there is no need to dismantle the entire contactor, so the maintenance efficiency is higher and the replacement cost is low. BRIEF DESCRIPTION OF THE DRAWINGS
[0012] The utility model is further described in detail below in conjunction with the accompanying drawings and specific implementation methods.
[0013] Figure 1 It is a structural schematic diagram of a contact assembly for a small contactor of the utility model;
[0014] Figure 2 It is a structural schematic diagram of the contact frame of the utility model;
[0015] Figure 3 It is a structural schematic diagram of the contactor yoke of the utility model;
[0016] Figure 4 It is a structural schematic diagram of the contact of the utility model. DETAILED DESCRIPTION
[0017] like Figure 1-4As shown, the contact assembly for a small contactor involved in the utility model comprises a contact frame 1, a contact 2 and a contactor yoke 3, wherein the contact frame 1 comprises a contact frame docking plate 5 and a contact frame mounting plate 6, wherein the contact frame docking plate 5 and the contact frame mounting plate 6 are connected end to end in sequence to form a square structure, wherein the contact frame docking plate 5 is provided with a docking plate rivet hole 7 for riveting the contact 2, wherein the front and rear ends of the middle part of the contact frame mounting plate 6 are provided with a mounting plate docking recess 8, wherein the contact frame mounting plate 6 is provided with a mounting plate threaded hole 9 at the left and right ends of the mounting plate docking recess 8; wherein the contactor yoke 3 comprises a yoke body 11, wherein the two ends of the yoke body 11 are bent vertically upward to form a yoke upper mounting portion 12 and a yoke lower mounting portion 13, respectively, wherein the yoke The yoke upper mounting portion 12 is provided with a first semicircular notch 14, the yoke lower mounting portion 13 is provided with a second semicircular notch 15 which is concentric with the first semicircular notch 14, the mounting plate docking recess 8 is clamped on the side of the yoke upper mounting portion 12, the yoke body 11 is provided with a yoke socket 17 and a yoke threaded hole 18 for inserting the contact frame docking plate 5, the contact frame 1 is sleeved on the yoke body 11 and the mounting plate threaded hole 9 is connected to the yoke threaded hole 18 by screws, when the contact 2 is damaged due to frequent contact, the spare contact can be used by rotating the contact frame 1, which can effectively improve the service life of the product on the one hand, and on the other hand, there is no need to dismantle the entire contact when maintenance is required, so the maintenance efficiency is higher and the replacement cost is low.
[0018] The end of the yoke body 11 is bent vertically upward near the yoke threaded hole 18 to form a yoke reinforcement plate 20, which further prevents the contact frame 1 from shaking and shifting due to frequent impacts of the moving contact, making the docking more stable and reliable.
[0019] The contact 2 is provided with a contact silver layer 21 , and the contact silver layer 21 is made of silver cadmium oxide material, which has good electrical conductivity and can effectively increase the service life of the contact.
[0020] A yoke positioning protrusion 28 is provided at one end of the yoke body 11 away from the yoke threaded hole 18, and the contact assembly is accurately positioned when installed. A yoke bayonet 23 is provided on the yoke upper mounting portion 12, which facilitates the yoke body 11 to be clamped on the plastic part, and the fixation is stable and reliable.
[0021] The radius of the first semicircular notch 14 is smaller than the radius of the second semicircular notch 15, which is more suitable for installation, making the installation stable and preventing wrong installation.
[0022] The length of the upper yoke mounting portion 12 is greater than the length of the lower yoke mounting portion 13 .
[0023] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention are included in the protection scope of the present invention.
Claims
1. A contact assembly for a small contactor, characterized in that: The invention comprises a contact frame (1), a contact point (2) and a contactor yoke (3), wherein the contact frame (1) comprises a contact frame docking plate (5) and a contact frame mounting plate (6), wherein the contact frame docking plate (5) and the contact frame mounting plate (6) are connected end to end in sequence to form a square structure, wherein the contact frame docking plate (5) is provided with a docking plate riveting hole (7) for riveting the contact point (2), the front and rear ends of the middle part of the contact frame mounting plate (6) are provided with mounting plate docking recesses (8), and the contact frame mounting plate (6) is provided with mounting plate threaded holes (9) at the left and right ends of the mounting plate docking recesses (8); The contactor yoke (3) comprises a yoke body (11), the two ends of the yoke body (11) are bent vertically upward to form an upper yoke mounting portion (12) and a lower yoke mounting portion (13), the upper yoke mounting portion (12) is provided with a first semicircular notch (14), the lower yoke mounting portion (13) is provided with a second semicircular notch (15) concentric with the first semicircular notch (14), the mounting plate docking recess (8) is clamped on the side of the upper yoke mounting portion (12), the yoke body (11) is provided with a yoke socket (17) and a yoke threaded hole (18) for inserting the contact frame docking plate (5), the contact frame (1) is sleeved on the yoke body (11), and the mounting plate threaded hole (9) is connected to the yoke threaded hole (18) by screws.
2. The contact assembly for a small contactor according to claim 1, characterized in that: The end of the yoke body (11) is bent vertically upward near the yoke threaded hole (18) to form a yoke reinforcement plate (20).
3. The contact assembly for a small contactor according to claim 1, characterized in that: The contact (2) is provided with a contact silver layer (21), and the contact silver layer (21) is made of silver cadmium oxide.
4. The contact assembly for a small contactor according to claim 1, characterized in that: A yoke positioning protrusion (28) is provided at one end of the yoke body (11) away from the yoke threaded hole (18), and a yoke bayonet (23) is provided on the yoke upper mounting portion (12).
5. The contact assembly for a small contactor according to claim 1, characterized in that: The radius of the first semicircular notch (14) is smaller than the radius of the second semicircular notch (15).
6. The contact assembly for a small contactor according to claim 1, characterized in that: The length of the upper yoke mounting portion (12) is greater than the length of the lower yoke mounting portion (13).