CN104465248A - Heat tripping adjusting assembly - Google Patents
Heat tripping adjusting assembly Download PDFInfo
- Publication number
- CN104465248A CN104465248A CN201410830261.6A CN201410830261A CN104465248A CN 104465248 A CN104465248 A CN 104465248A CN 201410830261 A CN201410830261 A CN 201410830261A CN 104465248 A CN104465248 A CN 104465248A
- Authority
- CN
- China
- Prior art keywords
- yoke
- bimetal leaf
- tripping
- baffle plate
- adjusting part
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
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Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H71/00—Details of the protective switches or relays covered by groups H01H73/00 - H01H83/00
- H01H71/10—Operating or release mechanisms
- H01H71/12—Automatic release mechanisms with or without manual release
- H01H71/14—Electrothermal mechanisms
- H01H71/16—Electrothermal mechanisms with bimetal element
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
The present invention relates to a kind of hot dropout adjusting part, belong to low voltage electrical apparatus technology field.
Background technology
Miniature circuit breaker has overload and short-circuit protection function usually.Wherein overload protection function temperature rise occurs by bimetal leaf when circuit overloads, and bimetal leaf raises with own temperature and bends, and makes circuit breaker tripping to trigger tripping mechanism, thus turn-off current loop, realize the object of overlond trip protection.By bimetal leaf and one, existing hot dropout adjusting part supports that its support forms, thermal overload release support comprises the terminal block, soft connection board and the yoke that weld together successively, the housing of circuit breaker is provided with an adjustment screw, bent by the flexible baffle plate promoted in yoke of adjustment screw, this baffle plate promotes bimetal leaf again and bends, thus regulates the distance between bimetal leaf and tripping mechanism.
Also there is following technical problem in existing hot dropout adjusting part:
1, because the housing of circuit breaker has plastics to make usually, when circuit overloads, because the housing of the rising plastic material of temperature easily deformation occurs, the distance be arranged between the adjustment screw on housing and the baffle plate in yoke can not be fixed, the levels of precision that impact is threaded off.
2, can bend under the promotion of adjustment screw for the ease of baffle plate, must weld between yoke and terminal block and one section of soft connection board is set, cause existing hot dropout adjusting part structural redundancy, the existence of soft connection board adds production difficulty and cost; And due to the setting of soft connection board, add the quantity of solder joint, cause the loop resistance of circuit breaker to increase, loop resistance value uncertainty increases, thus affects the temperature rise model of circuit breaker.
Summary of the invention
Therefore, the technical problem to be solved in the present invention is in existing circuit breaker, hot dropout adjusting part can not fine adjustment dropout precision, production cost is higher, and affect the technical problem of circuit breaker temperature rise model, thus providing one can the hot dropout precision of fine adjustment, production cost is told somebody what one's real intentions are, and not easily affects the heat dropout adjusting part of circuit breaker temperature rise model.
To achieve these goals, the invention provides a kind of hot dropout adjusting part, comprise yoke and be arranged on the bimetal leaf in described yoke, described yoke is provided with baffle plate near the side of described bimetal leaf, regulating part is arranged on described baffle plate, described regulating part extends conflicts at described bimetal leaf, to make described bimetal leaf near described tripping mechanism; After described regulating part shrinks, described bimetal leaf elastic reset, with away from described tripping mechanism.
In above-mentioned hot dropout adjusting part, described regulating part comprises the screwed hole be arranged on described baffle plate, the nut be resisted against on described baffle plate, and inserts the screw of described screwed hole and described nut.
In above-mentioned hot dropout adjusting part, described screwed hole is flange screwed hole.
In above-mentioned hot dropout adjusting part, described screwed hole is arranged on the middle and upper part of described baffle plate.
In above-mentioned hot dropout adjusting part, the side of described yoke and the lower end of described bimetal leaf are weldingly connected.
In above-mentioned hot dropout adjusting part, also comprise terminal block, the lower end of described terminal block and the opposite side of described yoke lower end are weldingly connected.
Technique scheme of the present invention has the following advantages compared to existing technology:
1. in hot dropout adjusting part of the present invention, regulating part is arranged on baffle plate, and adjusting key extends conflicts at bimetal leaf, to make bimetal leaf near tripping mechanism; After regulating part shrinks, bimetal leaf elastic reset, away from tripping mechanism, thus, by means of the flexible distance that regulate bimetal leaf and tripping mechanism between of regulating part on baffle plate, realizes the object regulating dropout precision.The set-up mode on Shell of circuit breaker is arranged on compared to regulating part in prior art, in hot dropout adjusting part of the present invention, yoke is made of metal, deformation degree after its temperature rise is less, regulating part is arranged on bimetal leaf that the less yoke of deformation degree directly conflicts, makes hot dropout adjusting part of the present invention can control circuit breaker tripping more accurately.
2. in hot dropout adjusting part of the present invention, regulating part can be applied directly on bimetal leaf, therefore without the need to arranging soft connection board between terminal block and yoke, therefore, it is possible to make the heat dropout adjusting part structure of the present embodiment more succinct, reduce production difficulty and cost, and reduce number of welds, thus ensure that the temperature rise model of circuit breaker is more stable.
Accompanying drawing explanation
In order to make content of the present invention be more likely to be clearly understood, below in conjunction with accompanying drawing, the present invention is further detailed explanation, wherein,
Fig. 1 is the structural representation of hot dropout adjusting part of the present invention;
Fig. 2 is the structural representation of yoke in the present invention;
Fig. 3 is the cross-sectional schematic of the circuit breaker using existing hot dropout adjusting part.
Description of reference numerals
20-yoke; 30-bimetal leaf; 21-baffle plate; 22-regulating part; 221-nut; 222-adjustment screw; 50-terminal block; 60-soft connection board.
Embodiment
Below with reference to accompanying drawing, the hot dropout adjusting part of one of the present invention is described in detail.
With reference to figure 1-3, the present embodiment provides a kind of hot dropout adjusting part, the bimetal leaf 30 comprising yoke 20 and be arranged in yoke 20, as shown in Figure 1 and Figure 2, the lower end of described yoke 20 has the opening that stamping-out goes out, with the part of this slit complementary to downward-extension, being arranged in described opening of described bimetal leaf 30, and the end of the end of described bimetal leaf 30 and described yoke 20 is weldingly connected.Yoke 20 is provided with baffle plate 21 near the side of described bimetal leaf 30, and described baffle plate 21 is by one end bending and molding of yoke 20.Regulating part 22 is arranged on described baffle plate 21, by regulating part 22 by extending described bimetal leaf 30 of conflicting, to make described bimetal leaf 30 to close tripping mechanism curving; Or regulating part 22 is shunk by the position of conflict bimetal leaf 30, to make described bimetal leaf 30 to the curving away from described tripping mechanism.Thus, by means of the flexible distance that regulate bimetal leaf 30 and tripping mechanism between of regulating part 22 on baffle plate 21, realize the object regulating dropout precision.The set-up mode on Shell of circuit breaker is arranged on compared to regulating part in prior art 22, in the heat dropout adjusting part of the present embodiment, yoke 20 is made of metal, deformation degree after its temperature rise is less, regulating part 22 is arranged on bimetal leaf that the less yoke of deformation degree 20 directly conflicts, makes the heat dropout adjusting part of the present embodiment can control circuit breaker tripping more accurately.
In addition, the screw of general conventional heat dropout adjusting part is the baffle plate 21 by extending conflict yoke 20, force baffle plate 21 deformation thus promote the deformation of described bimetal leaf 30, reach the object of the spacing regulating bimetal leaf 30 and tripping mechanism, the deformation of described baffle plate 21 is promoted in order to enable screw, between yoke 20 and terminal block 50, need to arrange one section be flexible coupling, which results in the structural redundancy of existing hot dropout governor motion, the two ends of this soft connection board are welded with the end of yoke 20 and the end of terminal block 50 respectively, add the quantity of solder joint, make loop resistance value uncertain, the easy temperature rise model affecting circuit breaker.In the present embodiment, because regulating part 20 can be applied directly on bimetal leaf 30, therefore without the need to arranging soft connection board between terminal block 50 and yoke 20, therefore, it is possible to make the heat dropout adjusting part structure of the present embodiment more succinct, reduce production difficulty and cost, and reduce number of welds, thus ensure that the temperature rise model of circuit breaker is more stable.
In the present embodiment, described regulating part 22 comprises the screwed hole 211 be arranged on described baffle plate 21, the nut be resisted against on described baffle plate 21, and insert the screw 222 of described screwed hole 221 and described nut, it is bending near tripping mechanism that the mode that screw 222 screws in screwed hole 221 promotes described bimetal leaf 30.
In the present embodiment, described screwed hole 221 is flange screwed hole, and flange screwed hole is convenient in hole, process the screw thread compared with multifibres, and due to yoke 20 thinner, be flange screwed hole by hole processing, the effect of firm hold-down screw 222 can be played.
Particularly, described screwed hole 221 is arranged on the middle and upper part of described baffle plate 21, and such screw 222 can promote described bimetal leaf 30 in top position of trying one's best, and more easily makes bimetal leaf 30 be easy to stressed bending.
In the present embodiment, the side of described yoke 20 and the lower end of described bimetal leaf 30 are weldingly connected.
Further, also comprise terminal block 50, the lower end of described terminal block 50 and the opposite side of described yoke 20 lower end are weldingly connected.
Obviously, above-described embodiment is only for clearly example being described, the restriction not to execution mode.For those of ordinary skill in the field, can also make other changes in different forms on the basis of the above description.Here exhaustive without the need to also giving all execution modes.And thus the apparent change of extending out or variation be still among the protection range of the invention.
Claims (6)
1. a hot dropout adjusting part, it is characterized in that, comprise yoke (20) and be arranged on the bimetal leaf (30) in described yoke (20), described yoke (20) is provided with baffle plate (21) near the side of described bimetal leaf (30), regulating part (22) is arranged on described baffle plate (21), described regulating part (22) extends conflicts in described bimetal leaf (30), to make described bimetal leaf (30) near described tripping mechanism; After described regulating part (22) shrinks, described bimetal leaf (30) elastic reset, with away from described tripping mechanism.
2. the hot dropout adjusting part of one according to claim 1, it is characterized in that, described regulating part (22) comprises the screwed hole (211) be arranged on described baffle plate (21), the nut be resisted against on described baffle plate (21), and inserts the screw (222) of described screwed hole (221) and described nut.
3. the hot dropout adjusting part of one according to claim 2, is characterized in that, described screwed hole (211) is flange screwed hole.
4. the hot dropout adjusting part of the one according to Claims 2 or 3, is characterized in that, described screwed hole (211) is arranged on the middle and upper part of described baffle plate (21).
5. the hot dropout adjusting part of one according to claim 1, is characterized in that, the side of described yoke (20) and the lower end of described bimetal leaf (30) are weldingly connected.
6. the hot dropout adjusting part of one according to claim 5, is characterized in that, also comprises terminal block (50), and the lower end of described terminal block (50) and the opposite side of described yoke (20) lower end are weldingly connected.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410830261.6A CN104465248B (en) | 2014-12-26 | 2014-12-26 | A kind of hot dropout adjusting part |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410830261.6A CN104465248B (en) | 2014-12-26 | 2014-12-26 | A kind of hot dropout adjusting part |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104465248A true CN104465248A (en) | 2015-03-25 |
| CN104465248B CN104465248B (en) | 2017-03-29 |
Family
ID=52911133
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410830261.6A Active CN104465248B (en) | 2014-12-26 | 2014-12-26 | A kind of hot dropout adjusting part |
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| Country | Link |
|---|---|
| CN (1) | CN104465248B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107833805A (en) * | 2017-10-26 | 2018-03-23 | 上海良信电器股份有限公司 | A kind of breaker thermal tripping system |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN85107902A (en) * | 1985-10-26 | 1987-05-06 | 西屋电气公司 | Circuit breaker with bimetallic and alignment formation |
| JP2001084885A (en) * | 1999-09-13 | 2001-03-30 | Fuji Electric Co Ltd | Overcurrent tripping device for circuit breaker |
| CN2870150Y (en) * | 2005-09-27 | 2007-02-14 | 宁波奇乐电器实业总公司 | Over-current releasing device of low-voltage circuit breaker |
| CN201327800Y (en) * | 2009-03-31 | 2009-10-14 | 上海电科博耳电器开关有限公司 | Alarm non-tripping device |
| CN201336259Y (en) * | 2009-01-14 | 2009-10-28 | 德力西电气有限公司 | Adjustable releasing device for circuit breaker |
| CN102169781A (en) * | 2010-02-25 | 2011-08-31 | 三菱电机株式会社 | Circuit breaker |
| CN202651023U (en) * | 2012-06-01 | 2013-01-02 | 浙江鼎威科技有限公司 | Molded case circuit breaker with shunting thermo tripping protection |
| CN203367175U (en) * | 2013-08-13 | 2013-12-25 | 德力西电气有限公司 | Thermal tripping device support |
| CN204242976U (en) * | 2014-12-26 | 2015-04-01 | 德力西电气有限公司 | A kind of hot dropout adjusting part |
-
2014
- 2014-12-26 CN CN201410830261.6A patent/CN104465248B/en active Active
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN85107902A (en) * | 1985-10-26 | 1987-05-06 | 西屋电气公司 | Circuit breaker with bimetallic and alignment formation |
| JP2001084885A (en) * | 1999-09-13 | 2001-03-30 | Fuji Electric Co Ltd | Overcurrent tripping device for circuit breaker |
| CN2870150Y (en) * | 2005-09-27 | 2007-02-14 | 宁波奇乐电器实业总公司 | Over-current releasing device of low-voltage circuit breaker |
| CN201336259Y (en) * | 2009-01-14 | 2009-10-28 | 德力西电气有限公司 | Adjustable releasing device for circuit breaker |
| CN201327800Y (en) * | 2009-03-31 | 2009-10-14 | 上海电科博耳电器开关有限公司 | Alarm non-tripping device |
| CN102169781A (en) * | 2010-02-25 | 2011-08-31 | 三菱电机株式会社 | Circuit breaker |
| CN202651023U (en) * | 2012-06-01 | 2013-01-02 | 浙江鼎威科技有限公司 | Molded case circuit breaker with shunting thermo tripping protection |
| CN203367175U (en) * | 2013-08-13 | 2013-12-25 | 德力西电气有限公司 | Thermal tripping device support |
| CN204242976U (en) * | 2014-12-26 | 2015-04-01 | 德力西电气有限公司 | A kind of hot dropout adjusting part |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107833805A (en) * | 2017-10-26 | 2018-03-23 | 上海良信电器股份有限公司 | A kind of breaker thermal tripping system |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104465248B (en) | 2017-03-29 |
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