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Heating element for heating double-metal part capable of being applyied to cut off protection switch

A technology of heating elements and bimetal parts, applied in the parts of protection switches, protection switches, thermal switch parts, etc., can solve the problems of unstable firmness and other problems, and achieve the effect of rapid and uniform heating

Inactive Publication Date: 2012-08-22
SIEMENS AG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The solidity of the connection between the heating element and the conductor achieved during soldering is very unstable because for example aluminum can accumulate on the surface of the heating element and adversely affect the welding process

Method used

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  • Heating element for heating double-metal part capable of being applyied to cut off protection switch
  • Heating element for heating double-metal part capable of being applyied to cut off protection switch
  • Heating element for heating double-metal part capable of being applyied to cut off protection switch

Examples

Experimental program
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Embodiment Construction

[0027] The same reference signs denote the same parts in the figures.

[0028] figure 1 Shown is a heating element 1 punched from a sheet metal. The plate is composed of a resistive material, such as a chrome-aluminum alloy, which can have a higher ohmic resistance at lower temperatures. The heating element 1 has a smooth basic shape after punching and has a first end 5 and a second end formed by a fastening region 2 with two fastening plates 2 ′, 2 ″. At the first end 5 Other fixing plates 4 are arranged below. In this embodiment, the heating element 1 has other fixing plates 4 arranged oppositely in pairs and perpendicular to the longitudinal axis of the heating element 1. Of course, other fixing plates can also have other shapes And not necessarily arranged in pairs opposite each other and / or perpendicularly to the longitudinal axis of the heating element.The fastening area 2 and the area with the other fastening plate 4 are connected to each other via the web 3 .

[002...

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PUM

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Abstract

The invention relates to a heating element (1) for heating double metal pieces (7) which are applied to break protecting switch, in particular line protecting switch or breaker. The heating element has at least one fixed region (2) formed integrally on the heating element (1) and having at least one fixed plate (2', 2'') which is deformed such that a conductor (8) can be fixed into the fixed region (2).

Description

technical field [0001] The invention relates to a heating element for heating a bimetal which can be used to open a protective switch, in particular a circuit breaker or a circuit breaker. Background technique [0002] For example, protective switches are used in building wiring technology to switch current-carrying lines to non-current in the event of excessive current. The protective switch is, for example, a line protective switch or a circuit breaker. [0003] A bimetal is used for the thermal disconnection of the switch, through which the line current flows. The ohmic power transferred in the bimetal by the line current causes the bimetal to heat up. This heating causes bending of the bimetal due to the different thermal expansion coefficients of the two metal components. The bimetal part is arranged with reference to the connection of the locking mechanism in such a way that due to its deformation which increases with increasing temperature, the connection is releas...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01H37/02H01H37/52H01H71/14H01H71/16
CPCH01H71/164
Inventor 伯恩哈德·弗朗茨约尔格·派茨
Owner SIEMENS AG