CN102436985A - Heat element mechanism for circuit breaker tripping device - Google Patents

Heat element mechanism for circuit breaker tripping device Download PDF

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Publication number
CN102436985A
CN102436985A CN2011102976791A CN201110297679A CN102436985A CN 102436985 A CN102436985 A CN 102436985A CN 2011102976791 A CN2011102976791 A CN 2011102976791A CN 201110297679 A CN201110297679 A CN 201110297679A CN 102436985 A CN102436985 A CN 102436985A
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CN
China
Prior art keywords
circuit breaker
support
thermal element
tripping device
armature
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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.)
Pending
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CN2011102976791A
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Chinese (zh)
Inventor
曹兵兵
杨海军
燕艳
崔光华
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FORETECH ELEC APP (JIANGSU) CORP Ltd
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FORETECH ELEC APP (JIANGSU) CORP Ltd
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Priority to CN2011102976791A priority Critical patent/CN102436985A/en
Publication of CN102436985A publication Critical patent/CN102436985A/en
Pending legal-status Critical Current

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Abstract

The invention discloses a heat element mechanism for a circuit breaker tripping device. The heat element mechanism for the circuit breaker tripping device comprises a support frame, a bimetal element, a heat element, a field yoke and an armature, wherein the bimetal element, the heat element and the field yoke are sequentially and fixedly arranged at one side of the support frame, the armature is hinged with the other side of the support frame and corresponds to the field yoke, a shaft is arranged on the support frame, and a torsional spring for armature resetting is sheathed on the shaft. The heat element mechanism is characterized in that at least two pairs of clamp seats for abutting and buckling two arms of the torsional spring are arranged on the support frame, the torsional spring is abutted and buckled on different pairs of clamp seats, and the generated torque force is different. A plurality of pairs of clamp seats are arranged on the support frame, and the torque force of the single torsional spring can be regulated through the clamp seats, so the mechanism can adapt to circuit breakers in various different ampere specifications. Therefore, compared with the prior art, the heat element mechanism has the advantages that the frequent mechanical calibration regulation of the torsional spring is not needed, the preparation and the frequent replacement of a plurality of groups of torsional springs are not needed, the mechanism manufacturing work procedure is greatly simplified, the mechanical stability of the torsional spring is ensured, and the warehouse management cost of the torsional spring by industry manufacturers is also effectively saved.

Description

Circuit breaker tripping device thermal element mechanism
Technical field
the present invention relates to a kind of circuit breaker tripping device thermal element mechanism.
Background technology
thermal element mechanism is of paramount importance parts in the circuit breaker tripping device, and existing thermal element mechanism is normally combined by support 1, bimetallic element 2, thermal element 3, yoke 4, armature 5, axle 6, torsion spring 7 and rivet 8.Concrete combine Fig. 1, shown in 2, the equal nationality of an end of bimetallic element 2, thermal element 3 and yoke 4 is engaged togather by rivet 8, and is fixed on support 1 one sides; A hinged armature 5 on the while support 1, this armature 5 and near yoke 4 relative (yoke 4 all is the U-shaped yoke usually, and two arms of U-shaped yoke extend to the armature 5).Also be equipped with simultaneously axle 6 on the support 1, sheathed torsion spring 7 on the axle 6, two arms of this torsion spring 7 are against respectively on a pair of deck 1a that support 1 is provided with, and a wherein arm of torsion spring 7 just retaining on the upset path of armature 5.When being short-circuited, produce the magnetic field be directly proportional with the electric current that flows through thermal element 3 in the yoke 4, when the magnetic force in this magnetic field during greater than predetermined value; The torsion that armature 5 overcomes torsion spring 7 turns to yoke 4; Promote actuator's action of circuit breaker tripping device, break contact cuts off electric current.And when dangerous past tense, armature 5 can reset under torsion spring 7 twisting forces.
however problem that said mechanism exists is following: we know that a kind of torsion spring 7 can only apply on a kind of circuit breaker of specification ampere in the actual production and use of existing circuit breaker.After the whole assembled of a kind of circuit breaker owing to only have a pair of deck 1a on the support in the existing thermal element mechanism, so the torsion of torsion spring 7 by single having confirmed, the circuit breaker ampere specification of corresponding torsion spring 7 torsion representatives is also just definite.If when discovery torsion spring 7 torsion can't reach necessary requirement in the instantaneous verification of circuit breaker (even also there is error in the torsion spring of same specification); When perhaps in the use of reality, needing the ampere specification of adjustment circuit breaker; Adopt at present usually following two kinds of means to solve: 1, torsion spring 7 to be carried out calibration adjustments, yet during practical operation, on circuit breaker, torsion spring 7 is regulated extremely inconvenient; And needing a plurality of steps to accomplish, process is comparatively loaded down with trivial details.In addition, even can access suitable power, because the mechanics essence of torsion spring 7 changes, in use can there be very big unsteadiness in it, makes circuit breaker have potential safety hazard.2, change torsion spring 7; This just needs to make in advance many group same specification torsion springs; Yet, increase a torsion spring more and just mean warehouse compartment of the many increases of needs, on the angle of storehouse management in fact for present circuit breaker manufacturer; Not only cause managerial inconvenience, also increased the cost of safeguarding undoubtedly.
on the other hand; In conjunction with shown in Figure 1, the position that is used for assembled shaft 6 on the support 1 in the existing circuit breaker release thermal element mechanism is generally a pair of bayonet socket 1b, after axle 6 is assembled on the bayonet socket 1b, also need bayonet socket 1b pressed from both sides with nipper pliers; Be not only many one procedure when producing like this; And in thermal element mechanism long-term work process, axle 6 is got loose, cause mechanism's job stability to descend.
Summary of the invention
the present invention seeks to: a kind of torsion spring adjustment torsion of being convenient to is provided, being fit to the circuit breaker tripping device thermal element mechanism of multiple ampere specification, and practices thrift circuit breaker industry producer storehouse management cost with this.
technical scheme of the present invention is: a kind of circuit breaker tripping device thermal element mechanism comprises support, fixed order bimetallic element, thermal element and the yoke in support one side, and is articulated in support opposite side and the armature relative with yoke; Said support is provided with axle, is arranged with on the axle to be used for the torsion spring that armature resets; It is characterized in that said support is provided with at least two pairs of decks that supply the deduction of torsion spring two arms, the said torsion spring torsion that produces on to deck in difference that deducts is different.
are further, and the part that is used to establish axle described in the present invention on the support is two relative support chips, and said two support chips are provided with relative axis hole, and said axle is arranged in the said axis hole.In the routine techniques, what be provided with on two support chips is bayonet socket, after axle is assembled on the bayonet socket, also needs with nipper pliers bayonet socket is pressed from both sides; Be not only many one procedure when producing like this; And in thermal element mechanism long-term work process, axle is got loose, cause mechanism's job stability to descend.And change bayonet socket into axis hole among the present invention, and obviously assembly process is simple, and compares bayonet socket and be difficult for making axle to get loose, and job stability is better.
are the same with routine techniques, and when two arms of torsion spring described in the present invention were against on wherein any a pair of deck respectively, wherein an arm kept off on the upset path of armature just.
are the same with routine techniques, and yoke described in the present invention is the U-shaped yoke, and two arms of this U-shaped yoke extend to the armature both sides.
are the same with routine techniques, and bimetallic element described in the present invention, thermal element and yoke are fixed on support one side through the rivet cross-under, also reinforce through other rivet cross-under between said thermal element and the yoke simultaneously.
are the same with routine techniques, are welded with first plugboard described in the present invention on the thermal element, also are welded with second plugboard on said first plugboard.Said first plugboard and second plugboard all are used for fixing the circuit connection of circuit breaker.
On support of the present invention since be provided with many to deck, when two arms of torsion spring deduct in difference to deck on the time torsion that produces different, and different torsion spring torsion can characterize different circuit breaker ampere specifications.This circuit breaker tripping device thermal element provided by the invention for this reason mechanism is in instantaneous verification or actual use; If when finding that torsion spring torsion can't reach necessary requirement; Need not to change torsion spring; Also need not torsion spring is carried out the mechanics calibration adjustments, only need simply to change deck that torsion spring two arms are deducted, make single torsion spring can tackle the multiple ampere specification demand of circuit breaker just addressing the above problem.Certainly in the manufacture process of reality, what are set on the support deck is decided according to real needs, and each torsion spring torsion difference size that deck is tackled is also decided according to real needs.
Advantage of the present invention is:
this circuit breaker tripping device thermal element 1. provided by the invention mechanism; It manyly can be adjusted single torsion spring torsion deck by this owing on support, be provided with manyly to deck, makes mechanism can tackle the circuit breaker of multiple different ampere specifications; So compare prior art; The present invention need not frequently torsion spring to be carried out the mechanics calibration adjustments, also need not to prepare many group torsion springs and frequent change, has simplified manufacturing process of mechanism greatly; Guaranteed the mechanical stability of torsion spring, also effectively practiced thrift the storehouse management cost of industry producer for torsion spring.
this circuit breaker tripping device thermal element 2. provided by the invention mechanism; It changes the bayonet socket that is used for assembled shaft on the support into axis hole; Simplified the assembly process of axle greatly, and be difficult for making axle to get loose, guaranteed the better job stability of mechanism because axis hole is compared bayonet socket.
Description of drawings
Below in conjunction with accompanying drawing and embodiment the present invention is further described:
Fig. 1 is the structural front view of existing circuit breaker tripping device thermal element mechanism;
Fig. 2 is the right view of Fig. 1;
Fig. 3 is a structural front view of the present invention;
Fig. 4 is the right view of Fig. 3.
wherein: 1, support; 1a, deck; 1a ', deck; 1b, bayonet socket; 1c, axis hole; 2, bimetallic element; 3, thermal element; 4, yoke; 5, armature; 6, axle; 7, torsion spring; 8, rivet; 9, first plugboard; 10, second plugboard.
Embodiment
embodiment: combine Fig. 3, shown in Figure 4; This circuit breaker tripping device thermal element provided by the invention mechanism, it is made up of support 1, bimetallic element 2, thermal element 3, yoke 4, armature 5, axle 6, torsion spring 7, rivet 8, first plugboard 9 and second plugboard, 10 these parts.
An end of bimetallic element 2, thermal element 3 and yoke 4 all is fixed on support 1 one sides through rivet 8 cross-under described in present embodiment, also reinforces through 8 cross-under of other rivet between said thermal element 3 and the yoke 4 simultaneously.Said armature 5 is articulated in support 1 opposite side and relative with yoke 4, and yoke described in the present embodiment 4 is the U-shaped yoke, and two arms of this U-shaped yoke extend to armature 5 both sides.
said support 1 is provided with axle 6, and the part that is used to establish axle 6 on the said support 1 is two relative support chips, and said two support chips are provided with relative axis hole 1c, and said axle 6 is arranged in the said axis hole 1c.Axle is arranged with on 6 and is used for the torsion spring 7 that armature 5 resets, and is specifically as shown in Figure 4, and support described in the present embodiment 1 is provided with deck 1a, the 1a ' that first, second two couple supplies 7 liang of arms deductions of torsion spring, and next goes up distribution these two couples of deck 1a, 1a ' one.Said torsion spring 7 deducts and goes up the torsion difference that produces in these two couples of deck 1a, 1a '.When two arms of said torsion spring 7 are against any a pair of deck 1a, 1a ' last time (among Fig. 4,7 liang of arms of torsion spring deduct on a pair of first deck 1a that is positioned at the below), wherein an arm just retaining on the upset path of armature 5.
Be welded with first plugboard 9 on the thermal element 3 described in present embodiment, also be welded with second plugboard 10 on said first plugboard 9.Said first plugboard 9 and second plugboard 10 all are used for fixing the circuit connection of circuit breaker.
present embodiment operation principle is identical with prior art; When being short-circuited, produce the magnetic field be directly proportional with the electric current that flows through thermal element 3 in the yoke 4, when the magnetic force in this magnetic field during greater than predetermined value; The torsion that armature 5 overcomes torsion spring 7 turns to yoke 4; Promote actuator's action of circuit breaker tripping device, break contact cuts off electric current.And when dangerous past tense, armature 5 can reset under torsion spring 7 twisting forces.
This circuit breaker tripping device thermal element mechanism that present embodiment provides; It can be adjusted single torsion spring 7 torsion by two couples of deck 1a, 1a ' owing on support 1, be provided with two couples of deck 1a, 1a ', makes mechanism can tackle the circuit breaker of two kinds of different ampere specifications; So compare prior art; Present embodiment need not frequently torsion spring 7 to be carried out the mechanics calibration adjustments, also need not to prepare many group torsion springs and frequent change, has simplified manufacturing process of mechanism greatly; Guaranteed the mechanical stability of torsion spring 7, also effectively practiced thrift the storehouse management cost of industry producer for torsion spring.
This circuit breaker tripping device thermal element mechanism that present embodiment provides; It changes the bayonet socket 1b that is used for assembled shaft 6 on the support 1 (comparison diagram 1 and Fig. 3) into axis hole 1c; Simplified the assembly process of axle 6 greatly; And be difficult for making axle 6 to get loose because axis hole 1c compares bayonet socket 1b, guaranteed the better job stability of mechanism.
the foregoing description certainly only are explanation technical conceive of the present invention and characteristics, and its purpose is to let the people who is familiar with this technology can understand content of the present invention and enforcement according to this, can not limit protection scope of the present invention with this.All modifications that the spirit of main technical schemes is done according to the present invention all should be encompassed within protection scope of the present invention.

Claims (6)

1. circuit breaker tripping device thermal element mechanism; Comprise support (1), fixed order bimetallic element (2), thermal element (3) and yoke (4), and be articulated in support (1) opposite side and the armature (5) relative with yoke (4) in support (1) one side; Said support (1) is provided with axle (6), is arranged with on the axle (6) to be used for the torsion spring (7) that armature (5) resets; It is characterized in that said support (1) is provided with at least two pairs of decks (1a, 1a ') that supply the deduction of torsion spring (7) two arms, said torsion spring (7) deducts and deck (1a) is gone up the torsion difference that produces in difference.
2. circuit breaker tripping device thermal element according to claim 1 mechanism; The part that it is characterized in that being used on the said support (1) establishing axle (6) is two relative support chips; Said two support chips are provided with relative axis hole (1c), and said axle (6) is arranged in the said axis hole (1c).
3. circuit breaker tripping device thermal element according to claim 1 and 2 mechanism, two arms that it is characterized in that said torsion spring (7) are against wherein any a pair of deck (1a, 1a ') last time respectively, wherein an arm just retaining on the upset path of armature (5).
4. circuit breaker tripping device thermal element according to claim 1 and 2 mechanism is characterized in that said yoke (4) is the U-shaped yoke, and two arms of this U-shaped yoke extend to armature (5) both sides.
5. circuit breaker tripping device thermal element according to claim 1 and 2 mechanism; It is characterized in that said bimetallic element (2), thermal element (3) and yoke (4) are fixed on support (1) one side through rivet (8) cross-under, also reinforce between said thermal element (3) and the yoke (4) simultaneously through other rivet (8) cross-under.
6. circuit breaker tripping device thermal element according to claim 1 and 2 mechanism; It is characterized in that being welded with first plugboard (9) on the said thermal element (3), also be welded with second plugboard (10) on said first plugboard (9).
CN2011102976791A 2011-09-30 2011-09-30 Heat element mechanism for circuit breaker tripping device Pending CN102436985A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN2011102976791A CN102436985A (en) 2011-09-30 2011-09-30 Heat element mechanism for circuit breaker tripping device

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Application Number Priority Date Filing Date Title
CN2011102976791A CN102436985A (en) 2011-09-30 2011-09-30 Heat element mechanism for circuit breaker tripping device

Publications (1)

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CN102436985A true CN102436985A (en) 2012-05-02

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109243934A (en) * 2018-10-01 2019-01-18 无锡新宏泰电器科技股份有限公司 A kind of magnetictrip

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2001068009A (en) * 1999-08-26 2001-03-16 Matsushita Electric Works Ltd Electromagnetic tripping device of circuit breaker
CN101236867A (en) * 2007-02-01 2008-08-06 三菱电机株式会社 Overcurrent tripping device for circuit breaker
CN201838530U (en) * 2010-09-20 2011-05-18 江苏大全凯帆电器股份有限公司 Tripping device of low-voltage circuit breaker
CN201845723U (en) * 2010-05-21 2011-05-25 嘉兴市加控电气设备制造有限公司 Overload protection device of circuit breaker
CN201918334U (en) * 2010-12-20 2011-08-03 西门子公司 Electromagnetic trip component, electromagnetic trip device and low-voltage circuit breaker
CN202259097U (en) * 2011-09-30 2012-05-30 法泰电器(江苏)股份有限公司 Thermoelement mechanism of current breaker tripper

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2001068009A (en) * 1999-08-26 2001-03-16 Matsushita Electric Works Ltd Electromagnetic tripping device of circuit breaker
CN101236867A (en) * 2007-02-01 2008-08-06 三菱电机株式会社 Overcurrent tripping device for circuit breaker
CN201845723U (en) * 2010-05-21 2011-05-25 嘉兴市加控电气设备制造有限公司 Overload protection device of circuit breaker
CN201838530U (en) * 2010-09-20 2011-05-18 江苏大全凯帆电器股份有限公司 Tripping device of low-voltage circuit breaker
CN201918334U (en) * 2010-12-20 2011-08-03 西门子公司 Electromagnetic trip component, electromagnetic trip device and low-voltage circuit breaker
CN202259097U (en) * 2011-09-30 2012-05-30 法泰电器(江苏)股份有限公司 Thermoelement mechanism of current breaker tripper

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109243934A (en) * 2018-10-01 2019-01-18 无锡新宏泰电器科技股份有限公司 A kind of magnetictrip

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Application publication date: 20120502