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Centering device, use thereof and vacuum bulb including such device

A technology for centering devices and light bulbs, which can be used in parts of lighting devices, lighting devices, lighting and heating equipment, etc., and can solve expensive problems

Active Publication Date: 2022-04-26
SCHNEIDER ELECTRIC IND SAS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, the described solution is capable of obtaining hot and cold centering, but is very expensive

Method used

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  • Centering device, use thereof and vacuum bulb including such device
  • Centering device, use thereof and vacuum bulb including such device
  • Centering device, use thereof and vacuum bulb including such device

Examples

Experimental program
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Embodiment Construction

[0036] figure 1 Shown is a vacuum bulb A according to the invention, intended for use in a switch for breaking an electrical circuit. In a manner known per se, said bulb A comprises a cylindrical housing 1, 1a closed by two end caps 2, 3, in which are accommodated two arc contacts 4, 5, one of which (fixed arc The contact 4) is fixed to one of the above-mentioned covers 2, while the other (movable arcing contact 5) is mounted to slide axially inside the cylinder up to the so-called bottom end cover 3. Each contact consists of a contact pad fixed on an electrode, the electrode of the fixed contact is fixed on the so-called top cover 2, while the electrode of the movable contact is mounted to slide all the way to the so-called bottom end cover 3, the bellows seal 10 placed between the movable electrode and the bottom end cap. Said bulb A also comprises a dielectric shield comprising a so-called central shield 6, 6a (in two parts) placed around the contacts, a so-called end shi...

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PUM

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Abstract

The invention discloses a centering device, its use and a vacuum bulb comprising the centering device. The device for centering a metal shield in a vacuum bulb comprises at least one metal strip wrapped around and secured to the shield, the strip comprising cutouts formed after plastic deformation relative to the surface of the shield towards The tabs of the housing are inclined so that when the shield is introduced into the housing of the bulb, the tabs undergo a first elastic bending towards the shield when they come into contact with the inner wall of the housing, and then the tabs pass through the tabs towards the The elastic return of the housing performs the first centering of the shield and thus causes these same tabs to undergoes a second bend towards the housing to maintain the first centering performed. The simple and cost-effective centering device ensures a reliable and durable centering of the shield relative to the housing of the bulb at low cost.

Description

technical field [0001] The present invention relates to the field of vacuum bulbs, and more precisely to the field of components of said vacuum bulbs. [0002] The invention relates to a device for centering a metallic shield in a vacuum bulb comprising a housing of substantially cylindrical form closed by two end caps and comprising two electrodes (one fixed and one movable), said means for centering are intended to carry out the centering of the shield relative to the casing prior to high-temperature fixing of said shield to the casing. Background technique [0003] Vacuum bulbs are generally axisymmetric and comprise a bulb body mainly consisting of an insulating housing having a substantially cylindrical form closed by two end caps. The axis of symmetry of the bulb body thus defines the axis of symmetry of the vacuum bulb. [0004] In order to limit the risk of arcing and to obtain a good distribution of the electromagnetic field within the bulb, the internal elements ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F21S2/00F21V17/10
CPCF21S2/00F21V17/10H01H11/00H01H33/66207H01H33/66261H01H2033/66276
Inventor P.内温格
Owner SCHNEIDER ELECTRIC IND SAS