Alternating current contactor

Patent metadata

Field	Value
Publication number	US-10770251-B2
Application number	US-201615781160-A
Country	US
Kind code	B2
Filing date	Oct 24, 2016
Priority date	Dec 9, 2015
Publication date	Sep 8, 2020
Grant date	Sep 8, 2020

Abstract

An alternating current contactor comprises a base and a magnetic yoke. The magnetic yoke is mounted on a bottom plate of the base. A magnetic yoke support for supporting and buffering the magnetic yoke is respectively provided at two sides of the magnetic yoke, wherein sidewalls at two sides of each magnetic yoke support, which are connected with the magnetic yoke are different in thickness. The magnetic yoke support of the alternating current contactor of the utility model has a simple structure due to the arrangement of an asymmetric eccentric structure. The up-down position of the magnetic yoke relative to the bottom plate of the base can be adjusted by changing an assembly direction of the magnetic yoke supports, thereby achieving the purpose of adjusting the total stroke of the product with high flexibility. When a dimension of a housing of a plastic part is abnormal, the magnetic yoke has a certain adjustment amount to ensure that the integral assembly of the product can be completed and the efficiency and reliability can be improved.

First claim

The invention claimed is:

1. An alternating current contactor, comprising a base and a magnetic yoke, wherein the magnetic yoke is mounted on a bottom plate of the base, and a magnetic yoke support for supporting and buffering the magnetic yoke is respectively provided at two sides of the magnetic yoke, wherein the sidewalls at two sides of each magnetic yoke support, which are connected with the magnetic yoke are different in thickness.

2. The alternating current contactor according to claim 1 , wherein each magnetic yoke support is provided with identifying members used for distinguishing the sidewalls at two sides, which are different in thickness.

3. The alternating current contactor according to claim 2 , wherein each identifying member is a bulge or a groove.

4. The alternating current contactor according to claim 2 , wherein each identifying member is circular.

5. The alternating current contactor according to claim 1 , wherein a ratio of the thicknesses of the sidewalls at two sides of each magnetic yoke support, which are different in thickness, is 4:3.

6. The alternating current contactor according to claim 1 , wherein a mounting groove is provided at a junction between each magnetic yoke support and the magnetic yoke, and sidewalls at two sides of the mounting groove are different in thickness.

7. The alternating current contactor according to claim 6 , wherein the bottom of the magnetic yoke is provided with a magnetic yoke through hole that is penetrated horizontally, a magnetic yoke mounting sheet penetrates through the magnetic yoke through hole, and two ends of the magnetic yoke mounting sheet that are exposed out of the magnetic yoke are wrapped and fixed with the magnetic yoke supports for supporting and buffering the magnetic yoke.

8. The alternating current contactor according to claim 7 , wherein the magnetic yoke is fixedly connected with the base through the magnetic yoke supports at two sides, two horizontally inverted concave platforms are oppositely provided between two sidewalls in the base, and a recessed sidewall of each concave platform is provided with a fixing groove for fixing the corresponding magnetic yoke support; the mounting groove which cooperates with the corresponding magnetic yoke mounting sheet is formed in one end of the square blocky block shaped magnetic yoke support, and a fixing bump which cooperates with the fixing groove and in the shape of a triangular prism is provided at the other end of the magnetic yoke support; a magnetic yoke mounting groove in which the magnetic yoke and a part of the magnetic yoke mounting sheet, which is wrapped with the magnetic yoke support are mounted, is formed between the concave platform and the base; during mounting, the magnetic yoke is mounted into the magnetic yoke mounting groove, and the part of each magnetic yoke mounting sheet, which is wrapped with the magnetic yoke support is clamped into the recessed part of each of the two concave platforms, and meanwhile, the fixing bump is clamped into the fixing groove to fix the magnetic yoke.

9. The alternating current contactor according to claim 1 , wherein a buffering cushion for buffering the magnetic yoke is provided between the base and the magnetic yoke.

10. The alternating current contactor according to claim 1 , wherein a coil frame mounted on the magnetic yoke is provided inside the base and comprises an upper connecting plate and a lower connecting plate and a wiring post provided between the upper connecting plate and the lower connecting plate; an annular groove in which a coil is placed is formed among the upper connecting plate, the lower connecting plate and the wiring post; the wiring post is axially provided with a frame through hole, and the coil frame is fixed on the magnetic yoke through the frame through hole formed in the wiring post; the magnetic yoke is of an E-type structure, wherein the E-type magnetic yoke is mounted on the bottom plate of the base, with an opening facing upwards; the coil frame slides to an adjusting bulge of the coil frame along the middle part of the E-type magnetic yoke and props against the corresponding magnetic yoke support of the magnetic yoke; a wiring terminal which is connected with the coil is mounted on a sidewall of the base, the outer wall at one side of the base, which is close to the wiring terminal is provided with two surge mounting holes which are used for fixing a surge suppressor and distributed linearly; the outer wall of the surge suppressor, which contacts the base is correspondingly provided with two mounting bumps which cooperate with the surge mounting holes, and a sidewall of each mounting bump protrudes to form a hook which is in interference fit with the corresponding surge mounting hole; the surge suppressor is plugged into the surge mounting holes of the base through the mounting bumps on the surge suppressor to be fixedly connected with the base; after assembling, the surge suppressor is adjacent to the wiring terminal to facilitate a wiring connection therebetween.

Assignees

• Zhejiang Chint Electrics Co Ltd

Inventors

• Xu Ping
• Hu Yujia
• Zhang Xingdong
• Zhang Zhiwen
• Xiao Tifeng

Classifications

• H01H50/163

  Details concerning air-gaps, e.g. anti-remanence, damping, anti-corrosion · CPC title

• H01H2050/446

  Details of the insulating support of the coil, e.g. spool, bobbin, former · CPC title

• H01H50/44

  Magnetic coils or windings · CPC title

• H01H50/04

  Mounting complete relay or separate parts of relay on a base or inside a case · CPC title

• H01H50/36 Primary

  Stationary parts of magnetic circuit, e.g. yoke · CPC title