Breaker

A circuit breaker and moving piece technology, applied in the direction of circuits, contacts, electrical components, etc., can solve the problems that the manufacturing process cannot be fully inspected, the operating temperature bandwidth is wide, and cannot be used multiple times, so as to achieve miniaturization, suppress damage, The effect of improving productivity

Inactive Publication Date: 2012-11-14
KOMATSULITE MFG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The protection circuits using these safety devices have the following disadvantages: the bandwidth of the operating temperature is wide, the precise temperature setting is difficult, or, because it cannot be used many times, it cannot be fully inspected in the manufacturing process.

Method used

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Embodiment Construction

[0043] A circuit breaker according to one embodiment of the present invention will be described with reference to the drawings. figure 1 as well as figure 2 Shows the structure of the circuit breaker. The circuit breaker 1 includes: a fixed piece 2 with a fixed contact 21; a movable piece 3 with a movable contact 31 at the front end; a thermal response element 4 that deforms with temperature changes; a PTC (positive temperature coefficient) thermal sensor Resistor 5; box body 6 for accommodating fixed piece 2, movable piece 3, thermal response element 4 and PTC thermistor 5, etc. The case 6 is composed of a case main body 61 , a cover member 62 mounted on the upper surface of the case main body 61 , and the like.

[0044]The fixed piece 2 is formed by stamping a metal plate mainly composed of phosphor bronze (it can also be a metal plate such as copper-titanium alloy, nickel brass, brass, etc.), and is formed by insert molding or caulking. It is assembled into the box main...

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PUM

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Abstract

Disclosed is a miniature breaker which progressively reduces contact resistance and permits further miniaturisation by appropriately maintaining the contact locations of a fixed contact point and moveable contact point. The breaker is equipped with a fixed contact point (2), a moveable contact point (3), a bimetal (4) and a case (6), where the moveable contact point (3) is equipped with a second elastic member (35) possessing a lower elastic coefficient than a first elastic member (34), and a fixing member (33) disposed between the first elastic member (34) and second elastic member (35) which is fixed by the case (6).

Description

technical field [0001] The present invention relates to a small circuit breaker built in a secondary battery. Background technique [0002] Conventionally, safety devices for secondary batteries such as small nickel-hydrogen batteries and lithium-ion batteries installed in mobile phones, notebook computers, etc. have used PTC thermistors (those whose resistance value increases sharply above a certain temperature) Conductive substances) and thermal fuses, etc. The protective circuits using these safety devices have the following disadvantages: the operating temperature range is wide, precise temperature setting is difficult, or they cannot be fully inspected in the manufacturing process because they cannot be used many times. Therefore, instead of such a conventional protection circuit, a mechanically actuated safety device that can set a precise operating temperature and withstand repeated use has been expected, and various technical proposals have been made. [0003] For ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01H37/54H01H37/04
CPCH01H37/14H01H37/04H01H37/5427H01H1/504H01H1/58
Inventor 中西义博八木孝太
Owner KOMATSULITE MFG
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