CN101976640B - Low-voltage breaker tripper - Google Patents

Low-voltage breaker tripper Download PDF

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Publication number
CN101976640B
CN101976640B CN2010102873911A CN201010287391A CN101976640B CN 101976640 B CN101976640 B CN 101976640B CN 2010102873911 A CN2010102873911 A CN 2010102873911A CN 201010287391 A CN201010287391 A CN 201010287391A CN 101976640 B CN101976640 B CN 101976640B
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China
Prior art keywords
low
heating
armature
terminals
yoke
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Application number
CN2010102873911A
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Chinese (zh)
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CN101976640A (en
Inventor
王华章
马丽萍
钱兴勇
李涛
郭强
耿翔宇
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Jiangsu Daquan Kaifan switch Co.,Ltd.
Original Assignee
Jiangsu Daqo Kaifan Electrical Appliance Co ltd
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Priority to CN2010102873911A priority Critical patent/CN101976640B/en
Publication of CN101976640A publication Critical patent/CN101976640A/en
Application granted granted Critical
Publication of CN101976640B publication Critical patent/CN101976640B/en
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Abstract

The invention relates to a triggering part of a tripping protection system of a low-voltage breaker, in particular to a low-voltage breaker tripper, belonging to low-voltage power transmission and distribution equipment. The low-voltage breaker tripper comprises a pair of conductor wiring terminals, i.e. a first wiring terminal and a second wiring terminal. The first wiring terminal and the second wiring terminal are respectively connected with a heating element and a double plate which is used as a magnetic field generating element; the heating element and the double plate are both arranged on a plastic support; the heating element is connected with the lower end of a bimetallic strip; the upper end of the bimetallic strip is connected with the double plate through flexible connection; and the double plate is provided with two elongated slots; the low-voltage breaker tripper also comprises a magnet yoke with two arms; the two arms of the magnet yoke pass through the two elongated slots on the double plate; a sheet armature which can be picked up by the magnet yoke is arranged in front of the two arms of the magnet yoke; and the armature can swing around the jointed shaft of the root of the armature. The invention has compact structure and high operating reliability, is convenient to manufacture and install and is easy to adjust in operating parameters.

Description

The low-voltage circuit breaker release
Technical field
The invention belongs to the low pressure equipment for power transmission and distribution, relate to a kind of trigger unit of dropout protection system of low-voltage circuit breaker, specifically is a kind of low-voltage circuit breaker release.
Background technology
The thermo magnetic trip release device is used comparatively extensive in low-voltage circuit breaker, requires it to have two kinds of defencive functions usually, i.e. instantaneous short-circuit protection and time-delay overload protection.But, shell support body little because of load current is long-pending little etc., and particularity has been brought very big difficulty to design.Generally adopt solenoid to increase magnetic field at present, satisfy the characteristic of instantaneous trip; Improve caloric value with high-resistance alloy material, to adapt to delayed releasing.Its major defect is: under big short circuit current condition, solenoid is blown easily.Simultaneously because of the restriction of installing space, coil often and other parts of release interfere, cause release not move flexibly.
Publication number is that the Chinese patent of CN1337054A discloses a kind of " clapper armature system of line-breaker " that triggers breaker tripping mechanism.Its utilization can be through electric current heating element and temperature-sensitive plate combine to realize the overlond trip of delaying time; And through the cooperate solenoid that replace in traditional structure of the groove on the heating element with yoke; Play the effect that increases magnetic field, reduced number of parts simultaneously, saved the release space.But still there is defective in this structure: 1, because the back-shaped groove that cooperates with yoke directly is set on heating element; In fact bear heating heating element the time and produced these two kinds of functions of required magnetic field; Its heating parameter and magnetic field parameter all will satisfy the requirement of each self-corresponding mechanism; Bring very big difficulty with installing to adjust for its structural design, be difficult to the best is arrived in parameter adjustment during reality is made and installed, thereby reduced operational reliability; 2, its action component structure is still complicated, and manufacturing and installation difficulty are big, have improved cost, have reduced reliability.
Summary of the invention
Technical problem to be solved by this invention is, the low-voltage circuit breaker release that provide a kind of compact conformation, manufacturing and easy for installation, operational factor to be easy to adjust, operational reliability is high.
Low-voltage circuit breaker release of the present invention includes the pair of conductors terminals; I.e. first terminals and second terminals; First terminals are connected a heating element and the back-shaped plate as the magnetic field generating device respectively with second terminals, and heating element and back-shaped plate are installed on the plastic stent, and heating element is connected with the lower end of a bimetal leaf; The upper end of bimetal leaf is connected with back-shaped plate through being flexible coupling, and back-shaped plate is provided with two elongated slots; Yoke with two arms is arranged, and two arms of yoke pass two elongated slots on the above-mentioned back-shaped plate; Two arm the place aheads of yoke are provided with one can be by the armature of the sheet of yoke adhesive, and armature can be around the jointed shaft swing of its root.
Said heating element is the plate that is snakelike.
Said armature root both sides are provided with the projection of a pair of horizontal direction, on above-mentioned plastic stent, have a pair of side plate of holding up simultaneously, and a pair of axis hole is set on the side plate, and the projection on the above-mentioned armature snaps onto and forms jointed shaft in the axis hole.
Advantage of the present invention is:
1, time template of belt length groove has replaced the solenoid of traditional structure, but cold punching machine-shaping, stable and reliable structure, simple, and saved installing space, can also bear big electric current;
2, snakelike heating element has strengthened the length of conductor, thereby increases heating resistor, simultaneously compact conformation;
3, plastic stent well is assembled together all parts of release, and has simplified the structure of metal parts; Wherein the strain of the jointed shaft plastics capable of using of armature is installed in the axis hole, and armature can be reduced to dull and stereotyped cold-worked part like this, thereby has reduced processing cost.
Description of drawings
Fig. 1 is a perspective view of the present invention;
Fig. 2 is a side structure sketch map of the present invention;
Fig. 3 is the three-dimensional decomposition texture sketch map of yoke of the present invention when pulling down;
Fig. 4 is the side decomposition texture sketch map of yoke of the present invention when pulling down;
Fig. 5 is the perspective view that shows heating element, back-shaped plate and bimetal leaf relative position relation;
Fig. 6 is the side structure sketch map that shows heating element, back-shaped plate and bimetal leaf relative position relation.
Embodiment
As shown in the figure; This low-voltage circuit breaker release includes the pair of conductors terminals, and promptly first terminals 1 and second terminals, 2, the first terminals are connected a snakelike heating element 3 and the back-shaped plate 4 as the magnetic field generating device respectively with second terminals; Heating element 3 is installed on the plastic stent 5 with back-shaped plate 4; Heating element is connected with the lower end of a bimetal leaf 6, and the upper end of bimetal leaf 7 is connected with back-shaped plate 4 through being flexible coupling, and back-shaped plate is provided with two elongated slots 8; Yoke 10 with two arms 9 is arranged, and two arms 9 of yoke pass two elongated slots 8 on the back-shaped plate; Arm 9 the place aheads of yoke are provided with one can be by the armature 11 of the sheet of yoke adhesive, and armature can be around jointed shaft 12 swings of its root.Concrete structure is the projection 13 that is provided with a pair of horizontal direction in armature 11 root both sides, on above-mentioned plastic stent 5, has a pair of side plate of holding up 14 simultaneously, and a pair of axis hole 15 is set on the side plate, and the projection 13 on the armature 11 snaps onto in the axis hole 15 and forms jointed shaft.
Electric current passes through successively in the course of work: first terminals 1, snakelike heater element 3, be flexible coupling 7, back-shaped plate 4 to second terminals.When short circuit current flows through, the instantaneous adhesive armature of yoke, the tripping mechanism through armature triggering circuit breaker makes breaker open operation; When the time-delay overload current flow through, the heater element heating made bi-metal plate deformed trigger tripping mechanism.

Claims (3)

1. low-voltage circuit breaker release; Include the pair of conductors terminals; I.e. first terminals (1) and second terminals (2); It is characterized in that: first terminals are connected a heating element (3) and the back-shaped plate (4) as the magnetic field generating device respectively with second terminals, and heating element (3) and back-shaped plate 4 are installed on the plastic stent (5), and heating element is connected with the lower end of a bimetal leaf (6); The upper end of bimetal leaf is connected with back-shaped plate (4) through be flexible coupling (7), and back-shaped plate is provided with two elongated slots (8); Yoke (10) with two arms (9) is arranged, and two arms (9) of yoke pass two elongated slots (8) on the back-shaped plate; The arm of yoke (9) the place ahead is provided with one can be by the armature of the sheet of yoke adhesive (11), and armature can be around jointed shaft (12) swing of its root.
2. low-voltage circuit breaker release according to claim 1 is characterized in that: said heating element (3) is for being snakelike plate.
3. low-voltage circuit breaker release according to claim 1 and 2; It is characterized in that: the projection (13) that is provided with a pair of horizontal direction in armature (11) root both sides; On plastic stent (5), has simultaneously a pair of side plate of holding up (14); A pair of axis hole (15) is set on the side plate, and the projection (13) on the armature (11) snaps onto and forms jointed shaft in the axis hole (15).
CN2010102873911A 2010-09-20 2010-09-20 Low-voltage breaker tripper Active CN101976640B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN2010102873911A CN101976640B (en) 2010-09-20 2010-09-20 Low-voltage breaker tripper

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN2010102873911A CN101976640B (en) 2010-09-20 2010-09-20 Low-voltage breaker tripper

Publications (2)

Publication Number Publication Date
CN101976640A CN101976640A (en) 2011-02-16
CN101976640B true CN101976640B (en) 2012-11-21

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Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104137214B (en) * 2012-02-23 2016-07-06 西门子公司 Chopper heater bi-metallic element, heater bi-metal and assemble method
CN103903921B (en) 2012-12-28 2016-08-17 施耐德电器工业公司 Overload protection arrangement and include the thermomagnetic adjustable release device of breaker of this device
CN103441046A (en) * 2013-08-13 2013-12-11 常熟开关制造有限公司(原常熟开关厂) Magnetic releaser of breaker
CN104517787B (en) * 2013-09-30 2017-01-11 Ls产电株式会社 Breaker with magnet fixing device
CN105448613B (en) * 2014-08-15 2019-05-07 施耐德电气工业公司 Buckle releaser for breaker
CN107749384B (en) * 2017-11-01 2020-03-17 常熟瑞特电气股份有限公司 Double-yoke thermomagnetic release

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE946826C (en) * 1953-12-08 1956-08-09 Voigt & Haeffner Ag Bimetal overcurrent release with quick short-circuit release
US3217125A (en) * 1961-06-07 1965-11-09 Wood Electric Corp Circuit breaker having a cam means for very rapid opening of the contacts
FR2559946A1 (en) * 1984-02-20 1985-08-23 Merlin Gerin Thermal trip with indirectly heated bimetallic strip.
DE4202122C2 (en) * 1992-01-27 1994-08-25 Kloeckner Moeller Gmbh Tripping device for switching devices
CN101004987A (en) * 2006-12-15 2007-07-25 大全集团有限公司 Break tripping device
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

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE946826C (en) * 1953-12-08 1956-08-09 Voigt & Haeffner Ag Bimetal overcurrent release with quick short-circuit release
US3217125A (en) * 1961-06-07 1965-11-09 Wood Electric Corp Circuit breaker having a cam means for very rapid opening of the contacts
FR2559946A1 (en) * 1984-02-20 1985-08-23 Merlin Gerin Thermal trip with indirectly heated bimetallic strip.
DE4202122C2 (en) * 1992-01-27 1994-08-25 Kloeckner Moeller Gmbh Tripping device for switching devices
CN101004987A (en) * 2006-12-15 2007-07-25 大全集团有限公司 Break tripping device
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

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SE01 Entry into force of request for substantive examination
C10 Entry into substantive examination
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C14 Grant of patent or utility model
TR01 Transfer of patent right

Effective date of registration: 20160711

Address after: Xinba Daquan 212211 Yangzhong Road, Zhenjiang City, Jiangsu province 66

Patentee after: Jiangsu Daquan Kai Kai switch Co., Ltd.

Address before: 212200 Jiangsu city of Zhenjiang province Yangzhong City Development Zone, Jiangsu Yihe road Daquan Kaifan electrical Limited by Share Ltd

Patentee before: Jiangsu Daqo Kfine Electric Co., Ltd.

Effective date of registration: 20160711

Address after: Xinba Daquan 212211 Yangzhong Road, Zhenjiang City, Jiangsu province 66

Patentee after: Jiangsu Daquan Kai Kai switch Co., Ltd.

Address before: 212200 Jiangsu city of Zhenjiang province Yangzhong City Development Zone, Jiangsu Yihe road Daquan Kaifan electrical Limited by Share Ltd

Patentee before: Jiangsu Daqo Kfine Electric Co., Ltd.

C41 Transfer of patent application or patent right or utility model
CP01 Change in the name or title of a patent holder

Address after: No.66 Daquan Road, Xinba Town, Yangzhong City, Zhenjiang City, Jiangsu Province

Patentee after: Jiangsu Daquan Kaifan switch Co.,Ltd.

Address before: No.66 Daquan Road, Xinba Town, Yangzhong City, Zhenjiang City, Jiangsu Province

Patentee before: Jiangsu Daquan Kaifan Switch Co.,Ltd.

CP01 Change in the name or title of a patent holder