Heat tripping adjusting assembly

A technology for adjusting components and thermal tripping, applied in the direction of operation/release mechanism of protection switches, etc., can solve the problems of affecting the temperature rise performance of circuit breakers, high production costs, inability to accurately adjust tripping accuracy, etc., achieving a simple structure and reducing production. Difficulty and cost, the effect of stable temperature rise performance

Active Publication Date: 2015-03-25
DELIXI ELECTRIC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] Therefore, the technical problem to be solved by the present invention is that in the existing circuit breaker, the thermal trip adjustment assembly cannot accurately adjust the tripping accuracy, the production cost is high, and the technical problem that affects the temperature rise performance of the circuit breaker is provided. Adjust the thermal tripping accuracy, the production cost is clear, and the thermal tripping adjustment component that is not easy to affect the temperature rise performance of the circuit breaker

Method used

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Embodiment Construction

[0022] A thermal trip adjustment assembly of the present invention will be described in detail below with reference to the accompanying drawings.

[0023] refer to Figure 1-3 , this embodiment provides a thermal trip adjustment assembly, including a yoke 20 and a bimetal 30 arranged on the yoke 20, such as figure 1 , figure 2 As shown, the lower end of the yoke 20 has a punched opening, and the part complementary to the opening extends downwards, the bimetal 30 is arranged in the opening, and the end of the bimetal 30 It is connected with the end of the magnetic yoke 20 by welding. A side of the yoke 20 close to the bimetal 30 is provided with a baffle 21 , and the baffle 21 is formed by bending one end of the yoke 20 . The adjusting member 22 is arranged on the baffle plate 21, and the adjusting member 22 is stretched to resist the bimetallic strip 30, so that the bimetallic strip 30 is bent toward the side close to the tripping mechanism; or the adjusting member 22 is f...

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Abstract

The invention discloses a heat tripping adjusting assembly. An adjusting piece is arranged on a baffle, and an adjusting key stretches to abut against a bimetallic strip, so that the bimetallic strip is close to a tripping mechanism. After the adjusting piece retracts, the bimetallic strip resets in an elastic mode and is away from the tripping mechanism. Therefore, the distance between the bimetallic strip and the tripping mechanism is adjusted through stretching and retracting of the adjusting piece on the baffle, so that the purpose of adjusting the tripping precision is realized. Compared with the arrangement mode that an adjusting piece is arranged on a breaker shell in the prior art, a magnet yoke in the heat tripping adjusting assembly is made of metal, the deformation degree of the magnetic yoke is small after temperature rises, the adjusting piece is arranged on the magnetic yoke with small deformation degree and directly abuts against the bimetallic strip, so that the heat tripping adjusting assembly can more precisely control tripping of a breaker.

Description

technical field [0001] The invention relates to a thermal trip adjustment assembly, which belongs to the technical field of low-voltage electrical appliances. Background technique [0002] Miniature circuit breakers usually have overload and short circuit protection. The overload protection function is that the temperature rise of the bimetal sheet when the circuit is overloaded, and the bimetal sheet bends with the rise of its own temperature to trigger the tripping mechanism to trip the circuit breaker, thereby disconnecting the current loop and realizing overload tripping purpose of protection. The existing thermal trip adjustment assembly is composed of a bimetallic sheet and a bracket supporting it. The thermal trip bracket includes a wiring board, a soft connecting board and a magnetic yoke welded together in sequence. The housing of the circuit breaker is provided with An adjustment screw pushes the baffle plate on the yoke to bend through the expansion and contract...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01H71/16
CPCH01H71/16
Inventor 俞华彬邵燕军徐可强
Owner DELIXI ELECTRIC
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