Contact for alternating current contactor
By designing an AC contact structure including contact bridges, contacts and contact reinforcements, the deformation and falloff problems caused by high heat are solved, and a firmer connection and improved safety is achieved.
Patent Information
- Application Number
- CN202421209864.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-30
- Publication Date
- 2025-02-18
- Estimated Expiration
- 2034-05-30
AI Technical Summary
The contacts of the contacts in the AC contactor are prone to deformation and fall off due to high heat, which affects normal use and poses safety hazards.
A contact structure including a contact bridge, contact and contact reinforcement is designed to ensure a firm connection between contacts through components such as reinforcement positioning columns, reinforcement bearing parts, reinforcement docking columns and reinforcement anti-tips. and prevent falling off.
Effectively prevent contacts from falling off, ensure that the overall connection is firm and tight, and improve safety.
Smart Images
Figure CN222507469U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to a contact for an AC contactor. Background Art
[0002] AC contactors primarily consist of four components: an electromagnetic system, a contact system, an arc-extinguishing device, and an insulating housing and accessories. AC contactor contacts are used in the contact system of an AC contactor and typically include a contact plate and contact points riveted to the plate. In actual use, frequent high-heat contact between the moving and static contacts can cause deformation at the contact plate and contact connection, as well as impacts that can easily cause the contact points to detach from the plate. This affects the proper operation of the contact and poses a safety hazard. Consequently, improvements and optimizations are being made to existing AC contactor contacts. Utility Model Content
[0003] In order to solve the above problems, the technical problem to be solved by the present invention is to provide a contact for an AC contactor.
[0004] The technical solution adopted by the contact for AC contactor of the utility model is characterized in that it includes a contact bridge, a contact and a contact reinforcement piece, the contact bridge includes a contact bridge middle supporting part, the two ends of the contact bridge middle supporting part are bent upward in sequence to form a contact bridge transition part and a contact bridge docking part arranged parallel to the contact bridge middle supporting part, the contact bridge docking part is provided with a contact bridge docking hole, the contact reinforcement piece is provided with a reinforcement piece positioning column passing through the contact bridge docking hole, a reinforcement piece receiving part affixed to the lower surface of the contact bridge docking part, and a reinforcement piece docking column from top to bottom, the contact reinforcement piece is also provided with a reinforcement piece through-hole running through from top to bottom, and the reinforcement piece through-hole is provided with reinforcement piece anti-retraction teeth arranged at intervals on the inner wall of the reinforcement piece docking column;
[0005] The contact includes a contact head attached to the upper surface of the contact bridge docking portion and a contact docking column riveted into the through hole of the reinforcement member. The end of the contact docking column is provided with a contact anti-retraction groove that is spaced apart and corresponds to the anti-retraction tooth of the reinforcement member.
[0006] The left and right ends of the reinforcement member positioning column are provided with reinforcement member anti-rotation protrusions, and the contact bridge docking portion is provided with contact bridge docking portion positioning openings corresponding to the reinforcement member anti-rotation protrusions.
[0007] The height of the reinforcement member positioning column is lower than the thickness of the contact bridge docking portion.
[0008] The reinforcement docking column is a conical structure.
[0009] A contact bridge fixing hole is provided in the middle of the contact bridge middle supporting portion, and contact bridge limiting recesses are provided at the upper and lower ends of the contact bridge fixing hole.
[0010] The cross section of the anti-backoff teeth of the reinforcement member is a right triangle.
[0011] The advantages of the contact for the AC contactor of the utility model are: the contact reinforcement piece is easy to process and after the contact is riveted, the anti-retraction teeth of the reinforcement piece can effectively prevent the contact from falling off. At the same time, the contact reinforcement piece and the contact bridge are accurately positioned, which effectively prevents the contact reinforcement piece from rotating, making the overall connection firm and tight, and highly safe. BRIEF DESCRIPTION OF THE DRAWINGS
[0012] The present invention will be further described in detail below with reference to the accompanying drawings and specific implementation methods.
[0013] Figure 1 This is an exploded view of the contacts used in the AC contactor of the utility model;
[0014] Figure 2 It is a structural diagram of the touch bridge of the utility model;
[0015] Figure 3 This is a front structural diagram of the contact reinforcement member of the utility model;
[0016] Figure 4 It is a schematic diagram of the structure of the contact of the utility model;
[0017] Figure 5 It is a schematic diagram of the back structure of the contact reinforcement member of the utility model. DETAILED DESCRIPTION
[0018] like Figure 1-5 As shown, the contact for the AC contactor involved in the present invention includes a contact bridge 1, a contact 2 and a contact reinforcement 3, the contact bridge 1 includes a contact bridge middle supporting portion 5, the two ends of the contact bridge middle supporting portion 5 are bent upward in sequence to form a contact bridge transition portion 6 and a contact bridge docking portion 7 arranged parallel to the contact bridge middle supporting portion 5, the contact bridge docking portion 7 is provided with a contact bridge docking hole 8, the contact reinforcement 3 is provided with a reinforcement positioning column 11 arranged on the contact bridge docking hole 8, a reinforcement receiving portion 10 attached to the lower surface of the contact bridge docking portion 7, and a reinforcement docking column 12 from top to bottom, the contact reinforcement 3 is also provided with a reinforcement through-hole 13 running through from top to bottom, the reinforcement The fixture through hole 13 is provided with spaced reinforcement anti-retraction teeth 14 on the inner wall of the reinforcement docking column 12; the contact 2 includes a contact head 15 affixed to the upper surface of the contact bridge docking portion 7 and a contact docking column 16 riveted into the reinforcement through hole 13, and the end of the contact docking column 16 is provided with a contact anti-retraction groove 18 spaced apart and corresponding to the reinforcement anti-retraction teeth 14. The contact reinforcement 3 is easier to process than the contact bridge 1. After riveting with the contact 2, the reinforcement anti-retraction teeth 14 and the contact anti-retraction groove 18 effectively prevent the contact 2 from falling off. At the same time, the contact reinforcement 3 and the contact bridge 1 are accurately positioned, so that the overall connection is firm and tight, and the safety is high.
[0019] The left and right ends of the reinforcement positioning column 11 are provided with reinforcement anti-rotation protrusions 20, and the contact bridge docking portion 7 is provided with a contact bridge docking portion positioning opening 21 corresponding to the reinforcement anti-rotation protrusions 20, which effectively prevents the contact reinforcement 3 from rotating after installation.
[0020] The height of the reinforcement positioning column 11 is lower than the thickness of the contact bridge docking portion 7 , which makes the riveting more stable and ensures that the contact head 15 is in close contact with the contact bridge docking portion 7 after riveting.
[0021] The reinforcement docking column 12 is a tapered structure, which further enhances the tightness of the connection after riveting.
[0022] A contact bridge fixing hole 23 is provided in the middle of the contact bridge middle supporting part 5 , and contact bridge limiting recesses 24 are provided at the upper and lower ends of the contact bridge fixing hole 23 , so that the contact bridge is installed stably and reliably.
[0023] The cross section of the reinforcing member anti-backward teeth 14 is a right triangle, which has a good anti-backward effect.
[0024] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent replacements and improvements made within the spirit and principles of the present invention are included in the scope of protection of the present invention.
Claims
1. A contact for an AC contactor, characterized in that: The invention comprises a contact bridge (1), a contact (2) and a contact reinforcement member (3), wherein the contact bridge (1) comprises a contact bridge middle supporting portion (5), the two ends of the contact bridge middle supporting portion (5) are bent upwards in sequence to form a contact bridge transition portion (6) and a contact bridge docking portion (7) arranged parallel to the contact bridge middle supporting portion (5), the contact bridge docking portion (7) is provided with a contact bridge docking hole (8), the contact reinforcement member (3) is provided with a reinforcement member positioning column (11) penetrating the contact bridge docking hole (8), a reinforcement member receiving portion (10) affixed to the lower surface of the contact bridge docking portion (7), and a reinforcement member docking column (12) in sequence from top to bottom, the contact reinforcement member (3) is also provided with a reinforcement member through hole (13) penetrating upwards and downwards, and the reinforcement member through hole (13) is provided with reinforcement member anti-retraction teeth (14) arranged at intervals on the inner wall of the reinforcement member docking column (12); The contact (2) comprises a contact head (15) attached to the upper surface of the contact bridge docking portion (7) and a contact docking column (16) riveted into the reinforcing member through hole (13), and an end of the contact docking column (16) is provided with a contact anti-retraction groove (18) arranged at intervals and corresponding to the reinforcing member anti-retraction tooth (14).
2. The contact for an AC contactor according to claim 1, characterized in that: The left and right ends of the reinforcement piece positioning column (11) are provided with reinforcement piece anti-rotation protrusions (20), and the contact bridge docking portion (7) is provided with a contact bridge docking portion positioning opening (21) corresponding to the reinforcement piece anti-rotation protrusions (20).
3. The contact for an AC contactor according to claim 1, characterized in that: The height of the reinforcement member positioning column (11) is lower than the thickness of the contact bridge docking portion (7).
4. The contact for an AC contactor according to claim 1, characterized in that: The reinforcement member docking column (12) is a conical structure.
5. The contact for an AC contactor according to claim 1, characterized in that: A contact bridge fixing hole (23) is provided in the middle of the contact bridge middle supporting portion (5), and contact bridge limiting recesses (24) are provided at the upper and lower ends of the contact bridge fixing hole (23) of the contact bridge middle supporting portion (5).
6. The contact for an AC contactor according to claim 1, characterized in that: The cross section of the reinforcement anti-recession tooth (14) is a right triangle.