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Push-button safety switch

A safety switch and key technology, applied in the field of key-type safety switches, can solve the problems of low utilization rate, uneconomical, non-reusable, etc., and achieve the effect of compensating for attenuation and preventing arcing effect.

Inactive Publication Date: 2013-03-27
慈溪云飞电气有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] 1. The key switch with conduction indicator light is used to connect with the fuse, that is, the input or output end of the key switch is connected in series with the fuse, and the fuse is blown to provide overload protection. This kind of key switch is not reusable. , so the usage rate is getting lower and lower
[0004] 2. The common push-button switch is used to connect with an independent overload protector. The disadvantage of this kind of push-button switch is that it is neither economical nor convenient to process.

Method used

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Examples

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Embodiment Construction

[0028] In the key-type safety switch of the present invention, the switch housing has a key opening and a conductive element jack; the double alloy sheet is an electrical element that can be deformed and stretched when heated, and has high sensitivity to current. When the current is too large, the element will As the temperature rises, it expands and stretches, bends and jumps in the opposite direction, so as to achieve the purpose of cutting off the power supply. Another function of the double alloy sheet is to be in charge of connecting the conductive part and the driving part, acting as a bridge.

[0029] The conductive part includes a first conductive element, a second conductive element, a third conductive element, and an indicator light. One pin of the first conductive element is connected to the double alloy sheet to support the double alloy sheet, and the other pin extends to the outside of the switch housing. One pin of the second conductive element extends to the ou...

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PUM

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Abstract

The invention discloses a push-button safety switch which comprises a toggle button, an upper push rod, an upper push rod spring, a push rod fixing plate, a lower push rod, a lower push rod spring, a pressure rod guide cylinder, a pressure rod, a pressure rod spring, a guide rod return spring, a guide rod, a first side cover, a steering wheel return spring, a steering wheel, a support rod, a support rod spring, a switch shell, a first conducting element, a second conducting element, a second side cover, a third conducting element, a dual-alloy piece and an indicating lamp. The push-button safety switch is convenient in use, has the characteristics of low construction cost, high safety factor and the like, is not influenced by external forces, and can perform free strip.

Description

technical field [0001] The invention relates to a push-button safety switch, in particular to a push-button safety switch with overload protection function. Background technique [0002] Existing push-button switches are generally divided into two types: one is a push-button switch with a conduction indicator light, and the other is a push-button switch with an overload protection function. According to the structural principle, the push-button switch with overload protection function is usually divided into the following categories: [0003] 1. The key switch with conduction indicator light is used to connect with the fuse, that is, the input or output end of the key switch is connected in series with the fuse, and the fuse is blown to provide overload protection. This kind of key switch is not reusable. , so the usage rate is getting lower and lower. [0004] 2. The common push-button switch is used to connect with an independent overload protector. The disadvantage of t...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01H77/04
Inventor 廖响亮
Owner 慈溪云飞电气有限公司
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