CN101853749B - Thermal trip device for electrical protection device - Google Patents
Thermal trip device for electrical protection device Download PDFInfo
- Publication number
- CN101853749B CN101853749B CN201010143795.3A CN201010143795A CN101853749B CN 101853749 B CN101853749 B CN 101853749B CN 201010143795 A CN201010143795 A CN 201010143795A CN 101853749 B CN101853749 B CN 101853749B
- Authority
- CN
- China
- Prior art keywords
- bimetal leaf
- slide rail
- slope
- equipment
- trip gear
- 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.)
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- 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
Landscapes
- Thermally Actuated Switches (AREA)
- Breakers (AREA)
- Emergency Protection Circuit Devices (AREA)
- Fixed Capacitors And Capacitor Manufacturing Machines (AREA)
Abstract
The invention relates to a thermal trip device for an electrical protection device, including a bimetallic strip which is in cooperative operation with a slide; the slide is hinged on a trip lever via an end; the bimetallic strip drives the slide in a triggering direction during deformation of the bimetallic strip due to electrical overload; the slide is in cooperative operation with a stop; the stop is fixed with respect to a housing of the device and is designed to partly guide the slide during its displacement. The device is characterized in that the bimetallic strip has a ramp at its end cooperating with the slide. The ramp is arranged in a manner to position the slide against the stop during a deformation phase of the bimetallic strip such that the stop assures guiding of the slide during its displacement.
Description
Technical field
The present invention relates to the thermal release device for electric protective equipment, described equipment comprises the release lever that is hinged on mounting panel and is subject to described trip gear control.When breaking down, mechanical linkages is disconnected, cause the operating mechanism of circuit breaker automatically to be threaded off, this dropout causes two contacts to be opened, described contact is respectively fixed contact and moving contact, described thermal release device comprises bimetal leaf, described bimetal leaf is designed to and slide rail joint operation, described slide rail is connected to described lever by its one end in hinged way, thereby after electrical overloads, when described bimetal leaf deforms, along dropout direction, drive described slide rail, described slide rail and stop part joint operation, described stop part is fixed with respect to the housing of described device, and in the process that is designed to move at described slide rail, partly guide the track of described slide rail.
Background technology
The tractive effort being applied on described slide rail by the end of described calorifics bimetal leaf is directed to the direction that rests on the bearing point on described slide rail perpendicular to described bimetal leaf.When described bimetal leaf bends because of the thermal effect of electrical overloads, described direction changes.Then, the change of the direction of described power need to keep being less than maximum angle, thereby described slide rail is resisted against on stop part.
But, in order to improve the performance of described equipment, may wish to use such bimetal leaf, the deflection of this bimetal leaf is too large, so that cannot allow the direction of described power remain in the excursion of permission.
This moderate finite deformation of described bimetal leaf has produced larger gradient in the end of the bimetal leaf with slide rail joint operation, resist described slide rail towards the gradient of its stop part motion, thereby in described slide rail motion, cause in described mechanical unlocking process, described stop part is designed to partly guide described slide rail.
Make like this dropout stroke of described slide rail not reproducible, the dropout under given electric current constantly (times) is also like this.
Summary of the invention
The invention solves the problems referred to above, and proposed a kind of thermal release device for electric protective equipment, even wherein in the situation that larger deflection occurs bimetal leaf, thread off and constantly also can repeat, thereby improved the performance of described device.
For this reason; target of the present invention is to provide a kind of thermal release device for electric protective equipment; described device is characterised in that; described bimetal leaf and described in it end of slide rail joint operation comprise the aslope part of shape; described slope is arranged to when described bimetal leaf generation first stage distortion; described slide rail is located against above-mentioned stop part, so that described stop part guides described slide rail in the motion process of described slide rail.
According to special characteristic, the α angle that longitudinal formation of the plane of the aslope described part of shape and described bimetal leaf is about 10 °.
According to another feature, the aslope part of above-mentioned shape realizes by the described end of folding described bimetal leaf.
According to another kind of execution mode, the aslope part of above-mentioned shape is by shearing a part for the described end of described bimetal leaf, thereby then folding this part forms slope and realizes.
According to another kind of execution mode, described slope assigns to realize by appendix, and described extention is fixed to the described end of described bimetal leaf.
According to specific implementations, described equipment comprises having the top section of operating mechanism and have the base section that described equipment is fixed on to the device on stayed surface, described slope is by realizing to the end of the folding described bimetal leaf of described bottom of device, and the top of described equipment is pointed in described end in a side of the relatively described slide rail of described bimetal leaf.
According to another kind of execution mode, described equipment comprises having the top section of operating mechanism and have the base section that described device is fixed on to the device on stayed surface, by folding the end of described bimetal leaf downwards, realize described slope, then described end is pointed to the bottom of described equipment and is extended in a side identical with described slide rail of described bimetal leaf.
The further target of the present invention is to provide a kind of electric protective equipment, and described device comprises thermal release device, and this heat is threaded off separately hot standby or comprised in combination above-mentioned feature.
Accompanying drawing explanation
It is more clear that other advantages of the present invention and feature will become from following detailed description, and below describe in detail and refer to the accompanying drawing being merely given as examples, in the accompanying drawings,
Fig. 1 is the plane graph of circuit-breaker, changes Shell of circuit breaker and is removed, and described circuit breaker is equipped with the thermal release device of the specific implementations according to the present invention;
Fig. 2 is the view identical with last width figure, and this circuit-breaker is equipped with the thermal release device according to second embodiment of the invention;
Fig. 3 is the plane graph of not being with the circuit-breaker of top cover, and described circuit-breaker is equipped with the trip gear identical with last width figure;
Fig. 4 is the plane graph of not being with the circuit-breaker of housing, and described circuit breaker is equipped with according to the trip gear of the 3rd execution mode;
Fig. 5 is partial view, shows release lever of the prior art, slide rail and trip gear;
Fig. 6 is the view identical with last width figure, has according to thermal release device of the present invention.
Embodiment
Miniature circuit breaker with mold insulation housing D represents in Fig. 1 to 4, and this circuit breaker comprises a pair of dynamic/ static contact 1,2 therein by known way, and described moving contact 2 is supported by contact arm, and described contact arm is actuated by operating mechanism M.
This operating mechanism M comprises for operating the handle hand-manipulated 3 of described contact, and this handle is couple to drive link 4 and forms toggle; The support lever 5 of described contact arm, this support lever is hinged on the pivotal pin of swivel plate 6; The mechanical linkages that can disconnect, it is arranged between plate 6 and drive link 4; With release lever 7, described release lever is hinged on plate 6 and by electromagnetic tripping apparatus 8 and thermal release device 9 and controls, and makes mechanical linkages disconnect when breaking down, and causes described mechanism to be independent of handle 3 and threads off.By known mode itself, this thermal release device 9 comprises bimetal leaf 10, and electric current flows through from this bimetal leaf, and described bimetal leaf is fixed to housing B by one end thereof 10a, and by its relative end 10b and slide rail 11 joint operations, described slide rail is mechanically connected to release lever 7.From Fig. 5 and 6, find out especially, slide rail 11 is that knuckle shaped comprising is connected to the end 11a of release lever 7 and the part (invisible in the figure) of extending perpendicular to slide rail plane in hinged way, bimetal leaf 10 is pressed against in described part, thereby applies tractive effort on described slide rail 11.Described slide rail is designed to move, thus at this bimetal leaf when the first stage is out of shape, will himself be positioned on stop part 12
According to the embodiments of the present invention shown in Fig. 1, be designed to comprise slope 13 with the end 10b of the bimetal leaf of slide rail 11 joint operations, this slope forms by folding described end downwards, and extend along the direction of operating mechanism M towards the top of equipment on described slope.
According to the execution mode described in Fig. 2 and 3, the described end of described bimetal leaf is sheared, and a part 14 for this end is folded to form the slope 15 of extending towards device bottom, at the device F that is fixed of described equipment, be fixed in the side on stayed surface, extend between described slide rail and the critical piece of described bimetal leaf on described slope.
In Fig. 4, described slope forms by optional feature 6, and this optional feature forms the slope of the described end that is fixed to described bimetal leaf.In whole these execution modes, be approximately 10 ° forming the angle [alpha] forming between the end piece on slope 13 and the longitudinal D of bimetal leaf.
Referring to accompanying drawing explanation operation of the apparatus according to the invention.
In Fig. 5, thermal release device is device of the prior art.In the figure, can see that the power F1 being applied on slide rail 11 removes slide rail 11 from its stop part 12 when bimetal leaf 10 starts deflection.This is because the deflection of described bimetal leaf is larger, causes bimetal leaf no longer to bring into play the positioning function against stop part by slide rail.
In Fig. 6, on the contrary, according to the execution mode shown in Fig. 2 and 3, slope 13 is formed on the end of described bimetal leaf.Owing to there being this slope, so the power F2 being applied by it when bimetal leaf starts deflection drives described slide rail 11 towards above-mentioned stop part 12.
Therefore, by the present invention, realized a kind of electric protective equipment, wherein from described bimetal leaf, started deflection, described slide rail is by towards its stop part bias voltage.Thereby, at bimetal leaf, starting before dropout side moves upward, described slide rail is correctly located.Slide rail is positioned on its stop part, makes described stop part when described slide rail moves, and partly guides described slide rail.Therefore dropout track and slide rail stroke can repeat, and the dropout under given electric current is constantly also so, makes like this performance of described device improve.This improvement shows as following advantage: the position that industrial cost is lower, can not occupy circuit-breaker miscellaneous part, and can not bring any extensive change to the kinematic chain of circuit-breaker.The present invention is applied to the protectiveness switching device of any use calorifics bimetal leaf, for example motor protective circuit circuit breaker, motor contactor etc.
The present invention be certainly restricted to never in any form described and shown in execution mode, these execution modes are only as example.
Therefore, can expect that other devices also can be used to form slope.
On the contrary, the present invention extends to and comprises whole technology equivalent scheme of described device and the combination of these schemes, if the latter is spirit according to the present invention, realizes.
Claims (8)
1. the thermal release device for electric protective equipment, described device comprises the release lever being hinged on mounting panel, described release lever is subject to the control of described trip gear, to make mechanical linkages disconnect when breaking down, cause the operating mechanism of circuit breaker automatically to be threaded off, this dropout causes two contacts to be opened, described contact is respectively fixed contact and moving contact, described thermal release device comprises bimetal leaf, described bimetal leaf is designed to and slide rail joint operation, described slide rail is connected to described release lever by its one end in hinged way, thereby after electrical overloads, when described bimetal leaf deforms, along dropout direction, drive described slide rail, described slide rail and stop part joint operation, described stop part is fixed with respect to the housing of described device, and in the process that is designed to move at described slide rail, partly guide the track of described slide rail,
It is characterized in that, described bimetal leaf (10) comprises the part that forms slope (13) in the end (10b) of itself and described slide rail (11) joint operation, described slope is arranged to when described bimetal leaf generation first stage distortion, against above-mentioned stop part (12) location, make described stop part in the motion process of described slide rail, guide described slide rail described slide rail (11).
2. trip gear as claimed in claim 1, is characterized in that, the α angle that the plane of described part on formation slope (13) and longitudinal formation of described bimetal leaf (10) are about 10 °.
3. trip gear as claimed in claim 1 or 2, is characterized in that, the part on above-mentioned formation slope (13) realizes by the described end of folding described bimetal leaf (10).
4. trip gear as claimed in claim 1 or 2, it is characterized in that, the part on above-mentioned formation slope (13) is by shearing a part for the described end of described bimetal leaf (10), then folding this part (14) thus form slope and realize.
5. trip gear as claimed in claim 1 or 2, is characterized in that, realize by optional feature (16) described slope (13), and described optional feature is fixed to the described end of described bimetal leaf.
6. trip gear as claimed in claim 3, it is characterized in that, described equipment comprises top section and the base section with operating mechanism, this base section has described equipment is fixed on to the device on stayed surface, described slope (13) is by realizing to the described end of the folding described bimetal leaf of described device bottom, and the top of described equipment is pointed in the described end of described bimetal leaf in a side of the relatively described slide rail of described bimetal leaf.
7. trip gear as claimed in claim 3, it is characterized in that, described equipment comprises top section and the base section with operating mechanism, this base section has described equipment is fixed on to the device on stayed surface, realize by folding the described end of described bimetal leaf downwards on described slope, and then the described end of described bimetal leaf is pointed to the bottom of described equipment and extended in a described bimetal leaf side identical with described slide rail.
8. an electric protective equipment, described equipment comprises the thermal release device as described in aforementioned claim any one.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR09/01580 | 2009-03-31 | ||
| FR0901580A FR2943847B1 (en) | 2009-03-31 | 2009-03-31 | THERMAL RELEASE DEVICE FOR AN ELECTRICAL PROTECTION DEVICE |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101853749A CN101853749A (en) | 2010-10-06 |
| CN101853749B true CN101853749B (en) | 2014-04-16 |
Family
ID=41275153
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201010143795.3A Active CN101853749B (en) | 2009-03-31 | 2010-03-17 | Thermal trip device for electrical protection device |
Country Status (6)
| Country | Link |
|---|---|
| EP (1) | EP2237302B1 (en) |
| CN (1) | CN101853749B (en) |
| AT (1) | ATE536625T1 (en) |
| BR (1) | BRPI1000820B1 (en) |
| ES (1) | ES2374876T3 (en) |
| FR (1) | FR2943847B1 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105869960B (en) * | 2016-06-02 | 2018-11-23 | 无锡新宏泰电器科技股份有限公司 | A kind of Thermomagnetic type breaker of plastic casing overload signal output device |
| CN108288572B (en) * | 2017-12-28 | 2024-10-29 | 温州市新蓝天电器有限公司 | Circuit breaker of integrated latch tripping mechanism |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0018553A1 (en) * | 1979-04-25 | 1980-11-12 | SOCIETE D'APPAREILLAGE ELECTRIQUE SAPAREL Société anonyme dite: | Modular circuit breaker |
| EP0962952A1 (en) * | 1998-06-04 | 1999-12-08 | Schneider Electric Industries SA | Dispositif de coupure électrique comprenant un dispositif de déclenchement différentiel et disjoncteur comprenant un tel dispositif |
| CN2517101Y (en) * | 2001-12-31 | 2002-10-16 | 施贻挺 | Small-sized circuit breaker operating device |
| CN2938385Y (en) * | 2006-08-17 | 2007-08-22 | 浙江省志明电气进出口有限公司 | Leakage circuit breaker |
-
2009
- 2009-03-31 FR FR0901580A patent/FR2943847B1/en not_active Expired - Fee Related
-
2010
- 2010-01-18 ES ES10354004T patent/ES2374876T3/en active Active
- 2010-01-18 EP EP10354004A patent/EP2237302B1/en active Active
- 2010-01-18 AT AT10354004T patent/ATE536625T1/en active
- 2010-03-17 CN CN201010143795.3A patent/CN101853749B/en active Active
- 2010-03-30 BR BRPI1000820-9A patent/BRPI1000820B1/en active IP Right Grant
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0018553A1 (en) * | 1979-04-25 | 1980-11-12 | SOCIETE D'APPAREILLAGE ELECTRIQUE SAPAREL Société anonyme dite: | Modular circuit breaker |
| EP0962952A1 (en) * | 1998-06-04 | 1999-12-08 | Schneider Electric Industries SA | Dispositif de coupure électrique comprenant un dispositif de déclenchement différentiel et disjoncteur comprenant un tel dispositif |
| CN2517101Y (en) * | 2001-12-31 | 2002-10-16 | 施贻挺 | Small-sized circuit breaker operating device |
| CN2938385Y (en) * | 2006-08-17 | 2007-08-22 | 浙江省志明电气进出口有限公司 | Leakage circuit breaker |
Also Published As
| Publication number | Publication date |
|---|---|
| BRPI1000820A2 (en) | 2011-03-22 |
| CN101853749A (en) | 2010-10-06 |
| ES2374876T3 (en) | 2012-02-22 |
| EP2237302B1 (en) | 2011-12-07 |
| EP2237302A1 (en) | 2010-10-06 |
| FR2943847B1 (en) | 2011-04-01 |
| FR2943847A1 (en) | 2010-10-01 |
| ATE536625T1 (en) | 2011-12-15 |
| BRPI1000820B1 (en) | 2020-08-18 |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |