Rotating dual break point contact

Patent metadata

Field	Value
Publication number	US-9837233-B2
Application number	US-201415024336-A
Country	US
Kind code	B2
Filing date	Sep 19, 2014
Priority date	Sep 24, 2013
Publication date	Dec 5, 2017
Grant date	Dec 5, 2017

Abstract

A rotating dual break point contact includes a rotor support, a first shaft, a second shaft, a third shaft, a first connection rod, a second connection rod, a contact bridge and a contact spring. The contact bridge is provided in the rotor support, and the contact bridge rotates relative to the rotor support by means of the first shaft, the second shaft, the third shaft, the first connection rod and the second connection rod. The contact bridge rotates between an initial pressure position and a maximum repulsion position. A single contact spring is mounted on one side of the contact bridge and is located in the rotor support.

First claim

What is claimed is:

1. A rotating dual break point contact comprising: a rotor support, a first shaft, a second shaft, a third shaft, a first connection rod, a second connection rod, a contact bridge and a single contact spring, wherein
the contact bridge is provided in the rotor support, the contact bridge rotates relative to the rotor support by means of the first shaft, the second shaft, the third shaft, the first connection rod and the second connection rod, the contact bridge rotates between an initial pressure position and a maximum repulsion position;
the single contact spring is mounted on one side of the contact bridge and is located in the rotor support.

2. The rotating dual break point contact according to claim 1 , wherein
the rotor support is single phase independent, the rotor support comprises two side plates and two lateral shafts which connect the two side plates, the two side plates are uniform in shape and size, the two side plates have a gap therebetween which is sufficient for the contact bridge to pass through, the two lateral shafts are centrosymmetric; each side plate is provided with a central hole in the center, each side plate is provided with a pair of centrosymmetric linkage holes and a pair of centrosymmetric connection slots, wherein the pair of linkage holes are disposed on two ends of the major axis of the side plate respectively, and the pair of the connection slots are disposed on two ends of the minor axis of the side plate respectively;
two first connection rods are mounted between the two side plates and are arranged on different sides of the contact bridge, the first connection rod is provided with a short shaft, the short shaft is mounted in the connection slot, the short shaft is the rotation center of the first connection rod;
two second connection rods are mounted between the two side plates and are arranged on different sides of the contact bridge;
the contact bridge is centrosymmetric in cross section, the contact bridge is provided with an obround hole in the center, the first shaft passes through the obround hole and slides therein along a longitudinal direction of the obround hole, the first shaft is the rotation center of the contact bridge when the first shaft slides to one end of the obround hole, the contact bridge is provided with a pair of centrosymmetric curved surfaces and a pair of centrosymmetric through holes, two curved surfaces cooperate with two lateral shafts to constrain the rotation range of the contact bridge, two third shafts pass through two through holes respectively; the contact bridge is provided with two contact points on each side, the two contact points are welded to a contact, the longitudinal direction of the obround hole and a line connecting the two contact points form an included angle, which keeps balance of the contact pressure of the contact points on both sides of the contact bridge;
the first shaft passes through the obround hole on the contact bridge and the central hole on the side plate;
two second shafts respectively pass through the first connection rod and the second connection rod and are mounted on profile of the two side plates, the two second shafts are arranged centrosymmetrically;
two third shafts respectively pass through the through hole on the contact bridge and the second connection rod, the two third shafts are arranged centrosymmetrically;
two ends of the single contact spring are mounted on two second shafts respectively.

3. The rotating dual break point contact according to claim 2 , wherein
the central holes on the two side plates are aligned;
the linkage holes on the two side plates are aligned;
the connection slots on the two side plates are aligned;
the first shaft cooperates with the central hole by means of a minuteness gap.

4. The rotating dual break point contact according to claim 3 , wherein a plurality of contact modules with the rotating dual break point contact are cascaded to form a multi-phase contact module, a linkage shaft is mounted in the linkage holes to realize linkage of the multi-phase contact module.

5. The rotating dual break point contact according to claim 2 , wherein a cylindrical surface on the lateral shaft cooperates with the curved surface on the contact bridge, two lateral shafts correspond to the initial pressure position and the maximum repulsion position of the contact bridge respectively, the cylindrical surface on the lateral shaft cooperates with the curved surface by means of a minuteness gap.

6. The rotating dual break point contact according to claim 5 , wherein a plurality of contact modules with the rotating dual break point contact are cascaded to form a multi-phase contact module, a linkage shaft is mounted in the linkage holes to realize linkage of the multi-phase contact module.

7. The rotating dual break point contact according to claim 2 , wherein the first connection rod comprises a body and two terminal surfaces laterally extending from both ends of the body, each terminal surface is provided with a convex short shaft and a first shaft hole, the short shaft and the first shaft hole are symmetric about the body on the terminal surface; the short shaft cooperates with the connection slot by means of a minuteness gap.

8. The rotating dual break point contact according to claim 7 , wherein the second connection rod comprises a body and two terminal surfaces laterally extending from both ends of the body, each terminal surface is provided with a second shaft hole and a third shaft hole, the second shaft hole and the third shaft hole are symmetric about the body on the terminal surface.

9. The rotating dual break point contact according to claim 8 , wherein the side plate is provided with a groove slot, the second shaft passes through the first shaft hole on the first connection rod and the second shaft hole on the second connection rod, the second shaft is mounted on the groove slot;
the second shaft cooperates with the first shaft hole and the second shaft hole by means of minuteness gaps respectively.

10. The rotating dual break point contact according to claim 9 , wherein
the third shaft passes through the third shaft hole on the second connection rod, the third shaft cooperates with the third shaft hole by means of a minuteness gap.

11. The rotating dual break point contact according to claim 9 , wherein a plurality of contact modules with the rotating dual break point contact are cascaded to form a multi-phase contact module, a linkage shaft is mounted in the linkage holes to realize linkage of the multi-phase contact module.

12. The rotating dual break point contact according to claim 10 , wherein a plurality of contact modules with the rotating dual break point contact are cascaded to form a multi-phase contact module, a linkage shaft is mounted in the linkage holes to realize linkage of the multi-phase contact module.

13. The rotating dual break point contact according to claim 8 , wherein a plurality of contact modules with the rotating dual break point contact are cascaded to form a multi-phase contact module, a linkage shaft is mounted in the linkage holes to realize linkage of the multi-phase contact module.

14. The rotating dual break point contact according to claim 7 , wherein a plurality of contact modules with the rotating dual break point contact are cascaded to form a multi-phase contact module, a linkage shaft is mounted in the linkage holes to realize linkage of the multi-phase contact module.

15. The rotating dual break point contact according to claim 2 , wherein the rotor support is provided with a connection rod slot and a spring slot on

Assignees

• Seari Electric Technology Co Ltd
• Zhejiang Chint Electrics Co Ltd

Inventors

• Gu Xiang
• Liu Yi
• Wang Zhongbin

Classifications

• H01H1/2058

  Rotating bridge being assembled in a cassette, which can be placed as a complete unit into a circuit breaker · CPC title

• H01H2071/1036

  having provisions for four or more poles · CPC title

• H01H71/1045

  Multiple circuits-breaker, e.g. for the purpose of dividing current or potential drop · CPC title

• H01H2235/01

  Spiral spring · CPC title

• H01H1/205

  Details concerning the elastic mounting of the rotating bridge in the rotor · CPC title