CN203882928U

CN203882928U - Thermal circuit breaker

Info

Publication number: CN203882928U
Application number: CN201420317298.4U
Authority: CN
Inventors: 郑凯
Original assignee: ZHEJIANG KAIYU ELECTRIC APPLIANCE Co Ltd
Current assignee: ZHEJIANG KAIYU ELECTRIC APPLIANCE Co Ltd
Priority date: 2014-06-14
Filing date: 2014-06-14
Publication date: 2014-10-15
Anticipated expiration: 2024-06-14

Abstract

The utility model discloses a thermal circuit breaker. The thermal circuit breaker comprises a housing, a wire inlet, a wire outlet, a heat conduction sheet, double metal sheets, a linkage member, a conducting piece and an operation handle; and a auxiliary breaking mechanism is disposed in the housing, the auxiliary breaking mechanism comprises a sealed cavity, a separator plate dividing the internal space of the cavity into two parts is disposed in the cavity, one end of the separator plate is connected with one end of a firing pin, the other end of the firing pin abuts against the clamping sheet, elastic pieces are disposed in a cavity body, where the separator plate is connected with the firing pin, on one side, one end of each elastic piece is connected with the separator plate, the other ends of the elastic piece are connected with the inner wall of the cavity, a cavity body, opposite to the firing pin of the cavity, on the other side is filled with an inert gas, a heat transmission piece is disposed in cavity body on the other side, and the heat transmission piece extends relative to the side located in the cavity body and abuts against the heat conduction sheet. The utility model provides the thermal circuit breaker, the circuit breaking speed of the thermal circuit breaker due to an accident is improved, and sensitivity is improved.

Description

Thermal circuit beraker

Technical field

The utility model relates to a kind of electric spare and accessory parts, and more particularly, it relates to a kind of thermal circuit beraker.

Background technology

Circuit breaker has different name according to the difference of disconnect mode, thermal circuit beraker is exactly wherein a kind of, so-called thermal circuit beraker is a kind of circuit breaker that adopts bimetal leaf heating to drive tripper structure to thread off, described tripper structure is to carry out mutual clamping by the manipulation end on operating breaker between STATEMENT OF FEDERALLY SPONSORED and bimetal leaf, break down at circuit, when internal temperature sharply rises, described bimetal leaf expanded by heating distortion, make STATEMENT OF FEDERALLY SPONSORED depart from bimetal leaf and flick dropout, because as a rule reacting, expanded by heating not very fast, metal will first be heated to a certain degree, then deformed dilation is gradually heated, so the sensitivity that circuit breaker disconnects is not high, the lifting of the not high internal damage degree that will directly cause circuit of the sensitivity of this circuit breaker, so improving the sensitivity of thermal circuit beraker need to improve.

Utility model content

The deficiency existing for prior art, the purpose of this utility model is to provide a kind of thermal circuit beraker, has improved the speed of this thermal circuit beraker because of unexpected open circuit, has promoted sensitivity.

For achieving the above object, the utility model provides following technical scheme: a kind of thermal circuit beraker, comprise housing and be arranged at the incoming line of enclosure interior, line outlet, conducting strip, bimetal leaf, STATEMENT OF FEDERALLY SPONSORED, the operating grip of conduction element and outside, described bimetal leaf includes the competing clamping sheet in one end and butt sheet, described STATEMENT OF FEDERALLY SPONSORED one end and the operating grip interlock other end are connected on clamping sheet, described conducting strip and butt sheet are conflicted, between described conducting strip and conduction element, be provided with connecting line, described enclosure interior is provided with auxiliary release mechanism, described auxiliary release mechanism comprises Packed cavity, described inside cavity is provided with inside cavity spatial separation is become to two-part dividing plate, it is inconsistent that described dividing plate one end is connected with striker and the described striker other end and clamping sheet, described dividing plate is connected with striker and in the chamber of a side, is provided with elastic component and described elastic component one end other end that is connected with dividing plate and is connected with cavity inner wall, in the opposite side chamber of described cavity with respect to striker, be filled with inert gas, described this side cavity inside is provided with heat transfer piece and described heat transfer piece extends to conducting strip inconsistent with respect to the opposite side that is positioned at chamber.

By adopting technique scheme, because the sensitivity of the expanded by heating of gas is far above metal, by heat transfer piece, heat is transmitted in the chamber of sealing, when gases are heated, they expand the quick expanded by heating of meeting, promotion dividing plate, dividing plate drive striker hit card contact pin campaign, make to disconnect between clamping sheet and STATEMENT OF FEDERALLY SPONSORED, the speed of expansion that use gas is heated, higher than the speed of metal heated expansion, so can improve the sensitivity that is subject to thermal cutoff of this thermal circuit beraker, reduces the infringement that fortuitous event causes circuit.

The utility model is further set to: described heat transfer piece inside is hollow setting and described heat transfer piece and is positioned at chamber one side end face and is provided with opening and described opening and heat transfer piece boring and is connected.

By adopting technique scheme, heat transfer piece is set to hollow, can improve the heat conduction efficiency of this heat transfer piece, and this heat transfer piece is provided with opening in chamber one side, in the time that internal temperature rises, the inner air that is positioned at heat transfer piece is easily preferably impacted this chamber, the sensitivity when disconnection that has further improved this thermal circuit beraker after heating.

The utility model is further set to: described clamping sheet is provided with buckling groove, described buckling groove is isosceles trapezoid setting and described STATEMENT OF FEDERALLY SPONSORED and long limit one side end face phase clamping, and described buckling groove and STATEMENT OF FEDERALLY SPONSORED clamping one side end face are also relatively set with two location divisions and described location division is evagination setting in the center of buckling groove dorsad.

By adopting technique scheme, facilitate coordinating between STATEMENT OF FEDERALLY SPONSORED and clamping sheet, reduce the requirement for dimensional fits while production, convenient for assembly.

Brief description of the drawings

Fig. 1 is the structural representation of the utility model thermal circuit beraker embodiment;

Fig. 2 is the clamping chip architecture schematic diagram of the utility model thermal circuit beraker embodiment.

Embodiment

Referring to figs. 1 through Fig. 2, the utility model thermal circuit beraker embodiment is described further.

A kind of thermal circuit beraker, comprise housing 8 and be arranged at the incoming line 31 of housing 8 inside, line outlet 32, conducting strip 7, bimetal leaf 9, STATEMENT OF FEDERALLY SPONSORED 4, the operating grip 1 of conduction element 5 and housing 8 outsides, described bimetal leaf 9 includes the competing clamping sheet 92 in one end and butt sheet 91, described STATEMENT OF FEDERALLY SPONSORED 4 one end and operating grip 1 other end that links is connected on clamping sheet 92, described conducting strip 7 is conflicted with butt sheet 91, between described conducting strip 7 and conduction element 5, be provided with connecting line 6, described housing 8 inside are provided with auxiliary release mechanism 2, described auxiliary release mechanism 2 comprises Packed cavity 21, described cavity 21 inside are provided with cavity 21 inner spaces are separated into two-part dividing plate 23, it is inconsistent that described dividing plate 23 one end are connected with striker 22 and described striker 22 other ends and clamping sheet 92, described dividing plate 23 is connected with striker 22 and in the chamber of a side, is provided with elastic component 24 and described elastic component 24 one end other end that is connected with dividing plate 23 and is connected with cavity 21 inwalls, in the opposite side chamber of described cavity 21 with respect to striker 22, be filled with inert gas, described this side cavity inside is provided with heat transfer piece 25 and described heat transfer piece 25 extends to conducting strip 7 inconsistent with respect to the opposite side that is positioned at chamber.

By adopting technique scheme, because the sensitivity of the expanded by heating of gas is far above metal, by heat transfer piece 25, heat is transmitted in the chamber of sealing, when gases are heated, they expand understands quick expanded by heating, promote dividing plate 23, dividing plate 23 drives striker 22 hit card contact pin 92 to move, make to disconnect between clamping sheet 92 and STATEMENT OF FEDERALLY SPONSORED 4, the speed of expansion that use gas is heated is higher than the speed of metal heated expansion, so can improve the sensitivity that is subject to thermal cutoff of this thermal circuit beraker, reduce the infringement that fortuitous event causes circuit.

Described heat transfer piece 25 inside are hollow setting and described heat transfer piece 25 and are positioned at chamber one side end face and are provided with opening and described opening and heat transfer piece 25 borings and are connected.

By adopting technique scheme, heat transfer piece 25 is set to hollow, can improve the heat conduction efficiency of this heat transfer piece 25, and this heat transfer piece 25 is provided with opening in chamber one side, in the time that internal temperature rises, the inner air that is positioned at heat transfer piece 25 is easily preferably impacted this chamber, the sensitivity when disconnection that has further improved this thermal circuit beraker after heating.

Described clamping sheet 92 is provided with buckling groove 921, described buckling groove 921 is isosceles trapezoid setting and described STATEMENT OF FEDERALLY SPONSORED 4 and long limit one side end face phase clamping, and described buckling groove 921 is also relatively set with two location divisions 922 with STATEMENT OF FEDERALLY SPONSORED 4 clamping one side end faces and described location division 922 is evagination setting in buckling groove 921 center dorsad.

By adopting technique scheme, facilitate coordinating between STATEMENT OF FEDERALLY SPONSORED 4 and clamping sheet 92, reduce the requirement for dimensional fits while production, convenient for assembly.

The utility model in the specific implementation, if circuit breaks down, conducting strip 7 is preferentially heated, thereby heat is delivered to respectively on clamping sheet 92 and heat transfer piece 25, because heat transfer piece 25 is hollow setting, so the gas of heat transfer piece 25 inside is first heated, gas after heated is heated by open impact cavity and a part of heat is carried out to the gas in heated chamber simultaneously, the gas of a large amount of expanded by heating can make dividing plate 23 drive striker 22 hit card contact pin 92 by impacting clapboard 23, now clamping sheet 92 is due to also can temperature distortion, between striker 22 hit card contact pin 92, clamping sheet 92 also can be out of shape accordingly, so whole thermal circuit beraker inside is in the time that appearance is unexpected, have two release mechanisms operates simultaneously, the sensitivity of complementary raising thermal circuit beraker open circuit.

Claims

1. a thermal circuit beraker, comprise housing and be arranged at the incoming line of enclosure interior, line outlet, conducting strip, bimetal leaf, STATEMENT OF FEDERALLY SPONSORED, the operating grip of conduction element and outside, described bimetal leaf includes the competing clamping sheet in one end and butt sheet, described STATEMENT OF FEDERALLY SPONSORED one end and the operating grip interlock other end are connected on clamping sheet, described conducting strip and butt sheet are conflicted, between described conducting strip and conduction element, be provided with connecting line, it is characterized in that: described enclosure interior is provided with auxiliary release mechanism, described auxiliary release mechanism comprises Packed cavity, described inside cavity is provided with inside cavity spatial separation is become to two-part dividing plate, it is inconsistent that described dividing plate one end is connected with striker and the described striker other end and clamping sheet, described dividing plate is connected with striker and in the chamber of a side, is provided with elastic component and described elastic component one end other end that is connected with dividing plate and is connected with cavity inner wall, in the opposite side chamber of described cavity with respect to striker, be filled with inert gas, described this side cavity inside is provided with heat transfer piece and described heat transfer piece extends to conducting strip inconsistent with respect to the opposite side that is positioned at chamber.

2. thermal circuit beraker according to claim 1, is characterized in that: described heat transfer piece inside is hollow setting.

3. thermal circuit beraker according to claim 2, it is characterized in that: described clamping sheet is provided with buckling groove, described buckling groove is isosceles trapezoid setting and described STATEMENT OF FEDERALLY SPONSORED and long limit one side end face phase clamping, and described buckling groove and STATEMENT OF FEDERALLY SPONSORED clamping one side end face are also relatively set with two location divisions and described location division is evagination setting in the center of buckling groove dorsad.