Vacuum contactor with movable guide element

Details Vacuum contactor with movable guide element Vacuum contactor with movable guide element

2002-05-29

2003-11-18

Enad, Elvin (Department: 2832)

High-voltage switches with arc preventing or extinguishing devic

Arc preventing or extinguishing devices

Vacuum

C218S140000, C218S154000

Reexamination Certificate

active

06649854

ABSTRACT:

This application is the national phase under 35 U.S.C. §371 of PCT International Application No. PCT/DE00/04175 which has an International filing date of Nov. 24, 2000, which designated the United States of America, and which claimed priority on German Application No. 199 59 207.1 filed Dec. 8, 1999, the entire contents of which are hereby incorporated by reference.
FIELD OF THE INVENTION
The invention generally relates to a switching device which is in the form of a vacuum contactor. More preferably, it relates to one which includes a contact (stationary contact for example) which is fixed to the enclosure, and a contact (loose bearing for example) which can be moved in order to produce a current-carrying connection.
BACKGROUND OF THE INVENTION
Vacuum contactors are known as prior art, in which a sleeve is fitted on the loose bearing, and which slide on a pin which is fixed to the enclosure. Furthermore, vacuum contactors are known in which a guide ring is provided on the vacuum interrupter.
In this configuration, the interrupter bolt which produces the contact slides into this ring. The guide ring can in this case be arranged on the stationary side or on the loose bearing side.
EP 0 641 001 A1 discloses a switch having a vacuum interrupter, in which a contact support, which can be moved by a drive, of a moving switching element is held on an interrupter axis in a vacuum tight manner via a folding bellows and via a sliding guide, and is passed out of the switch enclosure.
The described switch has a guide groove
22
which is held in an integral bush
12
, which in turn merges into a mounting flange
13
. This is attached via screw connections
15
to a flange
16
of the enclosure
7
of the switch. In order to remove the moving contact support
8
of the switch, the screw connections
15
must be undone, and the mounting flange
13
must be pulled off the enclosure
7
.
SUMMARY OF THE INVENTION
An embodiment of the invention is based on an object of offering a vacuum contactor with a moving contact guide such as a loose bearing guide, which is more convenient to operate.
Contactors are switching devices and are used, for example, for switching motors. The contactors may be in the form of air contactors or vacuum contactors.
The vacuum switching device, vacuum contactor for short, according to an embodiment of the invention for opening and closing circuits, has movable contact such as a loose bearing for example, with at least one guide element which is guided in a groove (recess) in the enclosure of the vacuum contactor and is moved during operation of the loose bearing. The loose bearing is in this way held and guided in the enclosure with a high level of repeatability accuracy and such that it is resistant to disturbances and faults.
In this case, the guide element can be fitted on a spring mount of a compression spring for producing additional contact pressure from the loose bearing on the stationary contact, as a result of which the spring mount has two functions.
If the guide element is fitted on an annular element which is arranged adjacent to the bellows element, and is thus fitted close to the contact point of the loose bearing, this results in the loose bearing being guided in a particularly reliable manner.
In order to further improve the guidance characteristics of the loose bearing, a number of, for example opposite, guide elements may also be provided on the spring mount and/or on an annular element. A simplified design configuration of the vacuum contactor is achieved if the annular element has not only a guide element fitted to it, but also an indicator for indicating the movement position of the loose bearing (closed/open) and/or a projection for positioning of an angled element for fitting a flexible strip on the loose bearing.
Guide elements which are essentially cuboid can be produced at low cost. In principle, the geometry of the guide element and of the corresponding groove (guide groove) for producing an interlock are matched to one another, and their cross sections can be matched to the respectively required load profile and may, for example, also be triangular or semicircular.
In this case, the term groove is intended to mean a recess of any type. The groove or grooves for holding the guide element or guide elements may be produced, for example, as molded recesses/depressions in the enclosure of the vacuum contactor or as recesses/depressions produced in some other way by forming, material cutting or material compressing manufacturing methods.
According to an embodiment of the invention, the groove for holding the guide element is formed by the interaction of the (fitted) cover of the enclosure with the lower part of the enclosure, so that when the enclosure is open and the cover is removed, the loose bearing can be removed conveniently from the enclosure (from above), for example for repair or for replacement of the vacuum interrupter.


REFERENCES:
patent: 3941959 (1976-03-01), Kohler et al.
patent: 4434331 (1984-02-01), Sakuma et al.
patent: 4527028 (1985-07-01), Luehring
patent: 4933518 (1990-06-01), Yin
patent: 5004877 (1991-04-01), Yin
patent: 5543598 (1996-08-01), Duffour et al.
patent: 5864108 (1999-01-01), Rohling et al.
patent: 2 202 186 (1973-07-01), None
patent: 197 21 611 (1998-11-01), None
patent: 198 33 484 (1999-06-01), None
patent: 198 50 202 (2000-04-01), None
patent: 0 641 001 (1995-03-01), None
O. Richter et al.: “Bauelemente Der Feinmechanik”Verlagt Technik Berlin, 183-195, 1952.

Affiliated with

Also associated with

Rating

Vacuum contactor with movable guide element does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Vacuum contactor with movable guide element, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Vacuum contactor with movable guide element will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-3127378