CONTACT SWITCHING DEVICE

• US 20130214883A1
• Filed: 03/14/2011
• Published: 08/22/2013
• Est. Priority Date: 03/15/2010
• Status: Active Grant

• Current Assignee: Omron Corporation
• Original Assignee: Omron Corporation
• Inventors: Yano, Keisuke, Hashimoto, Ryuichi, Hayashida, Yasuo, Mori, Shingo
• Granted Patent: US 8,963,663 B2
• Time in Patent Office: Days
• US Class Current: 335/153
• CPC Class Codes: H01H 1/36 by sliding
• CPC Class Codes: H01H 1/66 Contacts sealed in an evacuated or gas-filled envelope, e.g. magnetic dry-reed contacts
• CPC Class Codes: H01H 2050/025 containing inert or dielectric gasses, e.g. SF6, for arc prevention or arc extinction
• CPC Class Codes: H01H 50/00 Details of electromagnetic relays H01H51/28 takes precedence; electric circuit arrangements H01H47/00; details of electrically-operated selector switches H01H63/00
• CPC Class Codes: H01H 50/02 Bases; Casings; Covers frames for mounting two or more relays or for mounting a relay and another electric component H02B1/01, H04Q1/08, H05K
• CPC Class Codes: H01H 50/045 Details particular to contactors H01H50/042 takes precedence
• CPC Class Codes: H01H 50/30 Mechanical arrangements for preventing or damping vibration or shock, e.g. by balancing of armature
• CPC Class Codes: H01H 50/40 Branched or multiple-limb main magnetic circuits
• CPC Class Codes: H01H 50/443 Connections to coils
• CPC Class Codes: H01H 50/54 Contact arrangements
• CPC Class Codes: H01H 50/546 for contactors having bridging contacts
• CPC Class Codes: H01H 50/60 moving contact being rigidly combined with movable part of magnetic circuit for polarised relays H01H51/2254, H01H51/2281
• CPC Class Codes: H01H 51/00 Electromagnetic relays relays using the dynamo-electric effect H01H53/00
• CPC Class Codes: H01H 51/06 Armature is movable between two limit positions of rest and is moved in one direction due to energisation of an electromagnet and after the electromagnet is de-energised is returned by energy stored during the movement in the first direction, e.g. by using a spring, by using a permanent magnet, by gravity
• CPC Class Codes: H01H 9/443 using permanent magnets

Abstract

An object of the present invention is to provide a contact switching device having high dimension accuracy and an inexpensive price, and including a small sealed space. For this, there is provided a contact switching device that drives a contact mechanical portion (30) arranged inside a sealed space (43) to perform contact switching, based on excitation and degauss of an electromagnet portion (50) arranged outside the sealed space (43). Particularly, a ceramic plate (31) holding a fixed contact terminal (33) of the contact mechanical portion (30) is bonded to and integrated with an upper opening edge portion of a metal cylindrical flange (32), while a plate-like yoke (37) is bonded to and integrated with a lower opening edge portion opposed to the upper opening edge portion to form the sealed space (43).

Claims

1. A contact switching device that drives a contact mechanical portion arranged inside a sealed space to perform contact switching, based on excitation and degauss of an electromagnet portion arranged outside the sealed space,

wherein a ceramic plate holding a fixed contact terminal of the contact mechanical portion is bonded to and integrated with an upper opening edge portion of a metal cylindrical flange, while a plate-like yoke is bonded to and integrated with a lower opening edge portion opposed to the upper opening edge portion to form the sealed space.

2. The contact switching device according to claim 1, wherein a pair of permanent magnets for arc elongation is arranged in opposed inner surfaces of the metal cylindrical flange, respectively.

3. The contact switching device according to claim 2, wherein the metal cylindrical flange is made of a magnetic material.

4. The contact switching device according to claim 1, wherein the upper opening edge portion of the metal cylindrical flange is bonded to and integrated with an upper-surface outer circumferential edge portion of the ceramic plate.

5. The contact switching device according to claim 2, wherein the upper opening edge portion of the metal cylindrical flange is bonded to and integrated with an upper-surface outer circumferential edge portion of the ceramic plate.

6. The contact switching device according to claim 3, wherein the upper opening edge portion of the metal cylindrical flange is bonded to and integrated with an upper-surface outer circumferential edge portion of the ceramic plate.

7. The contact switching device according to claim 1, wherein the lower opening edge portion of the metal cylindrical flange is fitted on an annular step portion protruded on an upper surface of the plate-like yoke, and is welded and integrated from outside.

8. The contact switching device according to claim 2, wherein the lower opening edge portion of the metal cylindrical flange is fitted on an annular step portion protruded on an upper surface of the plate-like yoke, and is welded and integrated from outside.

9. The contact switching device according to claim 3, wherein the lower opening edge portion of the metal cylindrical flange is fitted on an annular step portion protruded on an upper surface of the plate-like yoke, and is welded and integrated from outside.

10. The contact switching device according to claim 4, wherein the lower opening edge portion of the metal cylindrical flange is fitted on an annular step portion protruded on an upper surface of the plate-like yoke, and is welded and integrated from outside.

11. The contact switching device according to claim 1, wherein an outer circumferential rib provided in the lower opening edge portion of the metal cylindrical flange is placed on an upper surface of the plate-like yoke and is welded and integrated from a vertical direction.

12. The contact switching device according to claim 2, wherein an outer circumferential rib provided in the lower opening edge portion of the metal cylindrical flange is placed on an upper surface of the plate-like yoke and is welded and integrated from a vertical direction.

13. The contact switching device according to claim 3, wherein an outer circumferential rib provided in the lower opening edge portion of the metal cylindrical flange is placed on an upper surface of the plate-like yoke and is welded and integrated from a vertical direction.

14. The contact switching device according to claim 4, wherein an outer circumferential rib provided in the lower opening edge portion of the metal cylindrical flange is placed on an upper surface of the plate-like yoke and is welded and integrated from a vertical direction.

16. The contact switching device according to claim 7, wherein the two annular brazing-reservoir grooves are provided in parallel.

17. The contact switching device according to claim 7, wherein at least one positioning projection that can lock the opening edge portion of the metal cylindrical flange to position the metal cylindrical flange portion is provided on the upper surface of the plate-like yoke.

18. The contact switching device according to claim 8, wherein at least one positioning projection that can lock the opening edge portion of the metal cylindrical flange to position the metal cylindrical flange portion is provided on the upper surface of the plate-like yoke.

15. A contact switching device that drives a contact mechanical portion arranged inside a sealed space to perform contact switching, based on excitation and degauss of an electromagnet portion arranged outside the sealed space,

wherein a lower opening edge portion of a metal cylindrical flange forming the sealed space is bonded to and integrated with a plate-like yoke provided with an annular brazing-reservoir groove having a shape along at least any one of an inside or an outside of the lower opening edge portion of the metal cylindrical flange on an upper surface.

19. A contact switching device that drives a contact mechanical portion arranged inside a sealed space to perform contact switching, based on excitation and degauss of an electromagnet portion arranged outside the sealed space,

wherein a lower opening edge portion of a metal cylindrical flange forming the sealed space is fitted in an annular brazing-reservoir groove provided on an upper surface of a plate-like yoke to be bonded and integrated.