Electrical switching arrangement with improved linear bearing

Patent metadata

Field	Value
Publication number	US-9852865-B2
Application number	US-201615205423-A
Country	US
Kind code	B2
Filing date	Jul 8, 2016
Priority date	Jul 8, 2015
Publication date	Dec 26, 2017
Grant date	Dec 26, 2017

Abstract

An electrical switch comprising a solenoid assembly including a core casing having a first bearing site and a bearing bush having a second bearing site, an armature movably borne in a switching direction at the first bearing site, and an armature shaft fixed to and movable with the armature and movably borne in the switching direction at the second bearing site.

First claim

What is claimed is:

1. An electrical switch, comprising:
a solenoid assembly having:
(a) a core casing having a first bearing site, and
(b) a bearing bush having a second bearing site;

an armature movably borne in a switching direction at the first bearing site; and
an armature shaft:
(a) fixed to and movable with the armature, and
(b) movably borne in the switching direction at the second bearing site and directly abutting the second bearing site.

2. The electrical switch of claim 1 , wherein the armature shaft has an end adjacent an armature contact.

3. The electrical switch of claim 2 , wherein the armature is positioned between the second bearing site and the end of the armature shaft adjacent the armature contact.

4. The electrical switch of claim 3 , further including a cover attached to the solenoid assembly at the end of the armature shaft adjacent the armature contact.

5. The electrical switch of claim 1 , wherein the bearing bush is disposed within the core casing.

6. The electrical switch of claim 5 , wherein the bearing bush has a circumferential insertion slope.

7. The electrical switch of claim 6 , wherein the bearing bush has a bearing flange.

8. The electrical switch of claim 7 , wherein the bearing bush is attached to the solenoid assembly at the bearing flange.

9. The electrical switch of claim 8 , wherein the bearing bush is disposed at one end of the core casing.

10. The electrical switch of claim 9 , wherein the bearing bush seals an end of the core casing.

11. The electrical switch of claim 10 , wherein the second bearing site is formed by an annular step of the bearing bush.

12. The electrical switch of claim 11 , wherein the bearing bush is monolithically formed.

13. The electrical switch of claim 1 , wherein a length of the second bearing site in the switching direction is at most half of a diameter of the armature shaft.

14. The electrical switch of claim 1 , wherein the second bearing site is spaced apart from an end of the core casing.

Assignees

• Te Connectivity Germany Gmbh

Inventors

• Kroeker Matthias
• Sandeck Peter
• Gabel Udo
• Haehnel Thomas

Classifications

• H01H50/60

  moving contact being rigidly combined with movable part of magnetic circuit {(for polarised relays H01H51/2254, H01H51/2281)} · CPC title

• H01H50/30

  Mechanical arrangements for preventing or damping vibration or shock, e.g. by balancing of armature · CPC title

• H01H50/20

  movable inside coil and substantially lengthwise with respect to axis thereof; movable coaxially with respect to coil · CPC title

• H01H50/18 Primary

  Movable parts of magnetic circuits, e.g. armature · CPC title

• H01F7/1607 Primary

  Armatures entering the winding · CPC title