CN101728128B - Low voltage circuit breaker - Google Patents
Low voltage circuit breaker Download PDFInfo
- Publication number
- CN101728128B CN101728128B CN200910211658.6A CN200910211658A CN101728128B CN 101728128 B CN101728128 B CN 101728128B CN 200910211658 A CN200910211658 A CN 200910211658A CN 101728128 B CN101728128 B CN 101728128B
- Authority
- CN
- China
- Prior art keywords
- push rod
- circuit breaker
- bimetallic
- voltage circuit
- opening
- 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.)
- Active
Links
- 238000009434 installation Methods 0.000 claims description 6
- 238000003780 insertion Methods 0.000 claims description 4
- 230000037431 insertion Effects 0.000 claims description 4
- 230000015572 biosynthetic process Effects 0.000 claims description 3
- 230000009471 action Effects 0.000 claims description 2
- 239000002184 metal Substances 0.000 abstract description 9
- 229910052751 metal Inorganic materials 0.000 abstract description 9
- 230000033001 locomotion Effects 0.000 description 4
- 238000005452 bending Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000008901 benefit Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000011144 upstream manufacturing Methods 0.000 description 1
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
- H01H71/74—Means for adjusting the conditions under which the device will function to provide protection
- H01H71/7427—Adjusting only the electrothermal mechanism
- H01H71/7436—Adjusting the position (or prestrain) of the bimetal
Landscapes
- Breakers (AREA)
- Thermally Actuated Switches (AREA)
- Oscillators With Electromechanical Resonators (AREA)
- Control Of Eletrric Generators (AREA)
- Control Of Motors That Do Not Use Commutators (AREA)
Abstract
The invention describes a low voltage circuit breaker (1) used for opening and closing electric contact; providing a double metal mold thermal safety system (3) having a releasing rod (5) for operating an opening apparatus (2) suitable for forcing the electric contact to break, and a double metal (4) capable of stopping the releasing rod (5) having a restricted part (4a) and a free part (4b); and provides a calibrating device (6) for calibrating the position of the double metal (4) comprising a push rod (7) for pushing the double metal (4) to set the position of the double metal (4), wherein the push rod (7) can move along the axial direction and circumferential direction.
Description
Technical field
The present invention relates to a kind of low-voltage circuit breaker.
Background technology
There is known circuit breaker, particularly in low pressure and home environment for connecting the circuit-breaker of upstream distribution network and downstream load.This circuit breaker can be positioned between off-position and open position, and wherein in this off-position, it is at moving contacting element and fixedly between contact element, set up electrical and Mechanical Contact, and at open position, forbids electrically and Mechanical Contact.
This circuit breaker comprises safety device, and this safety device can detect dangerous situation potentially also can automatically disconnect described circuit breaker.
In this safety device, there is a kind of thermal flexure safety system with bimetallic strip, this safety system can predetermined time cycle detects the existence of excess load, and disconnects the result that this contact is usingd as this detection.The difference of the operation of this system based on different metal thermal coefficient of expansion.This safety system is used the two strip metal bands that consist of different materials to form, they fasten each other, electric current is by its transmission and flow through this contact, by Joule effect, heats this two bands, and these two bands expand corresponding to this relative thermal coefficient of expansion along its length.This has caused this bimetallic bending, and it is crooked until it tackles the release lever of device for opening, and this has realized dropout, makes contact become open position.
Clearly, the position each other between bimetallic and this insertion rod is very important for the proper operation of this hot safety system, and is difficult to realize by calibration operation.
Than outside, must consider that the circuit breaker of accelerating is to be contained in unalterable capsul, therefore hot safety system has been contained in capsul and can not have calibrated again.
Summary of the invention
The object of the invention is the calibration of simplifying mutual alignment operation and simplifying Re Anjin system.
According to the present invention, this problem is by solving for opening and close the low-voltage circuit breaker of electrical contact, and it provides bimetal type hot safety system, has:
-device for opening, is suitable for forcing described electrical contact to disconnect,
-release lever, is suitable for operating described device for opening,
-there is the bimetallic of limited part and free part, be suitable for blocking described insertion rod to operate described device for opening;
Be provided with calibrating installation, to calibrate described bimetallic position, described calibrating installation comprises push rod, promotes described bimetallic to described bimetallic position is set, it is characterized in that, described push rod not only can move but also can move to move by circumference by axially entering.
By this way, can be by axially the entering and carry out pre-calibration of device, and carry out accurate calibration/calibrate again by circumferential operation.
Preferably, this push rod is supported by fixed support body via screw thread couple, to realize moving axially of push rod by rotating described push rod.
Preferably, by the geared system of circumferential formation, realize the described circumferential movement of this push rod to allow the motion that rotates in a circumferential direction of this push rod.Preferably, this gear has the radius larger than this push rod radius, and be positioned at this circuit-breaker shell near, be arranged in the position that the opening external contact that can make by this shell arrives.By this way, once this shell be closed, still can be from this gear of peripheral operation.
Preferably, by screw, realize this and axially insert, be preferably Allen key type, the Allen key of for example switching on, it is inserted in the inside axial cavity of this push rod.
Preferably, this bimetallic this limited part is fastened to and triggers on supporter, and this triggering supporter applies elastic reactance to the thrust of this push rod, to this limited part is closely remained between this push rod and this triggering supporter.Preferably, this bimetallic freely part is positioned at this bimetallic one end in the face of this insertion rod.Preferably, this bimetallic this limited part is positioned at this bimetallic other end.
Accompanying drawing explanation
Further aspect of the present invention and advantage, by by the mode of the example shown in accompanying drawing, describe preferably but not the embodiment of the present invention of removing property becomes clearer, wherein:
-Fig. 1 shows according to the interior views of the low-voltage circuit breaker (1) in pre-calibration position of the present invention;
-Fig. 2 shows the 3-D view of some details in Fig. 1;
-Fig. 3 shows the interior views of the low-voltage circuit breaker (1) in calibrating position;
-Fig. 4 shows the 3-D view of some details in Fig. 3.
Embodiment
With reference to accompanying drawing, the whole low-voltage circuit breaker 1 of numeral 1 indication, is hereinafter also referred to by circuit breaker 1 simply.Electrical contact can be opened and close to this circuit breaker 1 in known manner.
This circuit-breaker 1 also comprises the hot safety system 3 of this bimetal type.
This hot safety system 3 comprises bimetallic 4, and this bimetallic consists of the tongue bars with the bimetallic strip of two kinds of different metals and different heat expansion coefficient.This bimetallic 4 is suitable for allowing electric current to flow through, so that the heat causing as electric current and form subsequently the result of the differences in expansion between these bimetallic two bands and bending.
This bimetallic 4 (it extends in the accompanying drawings vertically) has the free part 4b that is positioned at these bimetallic 4 places, one end (being upper position in accompanying drawing), and the limited part 4a that is positioned at these bimetallic 4 other ends (being lower position in accompanying drawing).
This limited part 4a is fastened on and triggers on supporter 10, this triggering supporter consists of the L shaped metal support with fixed arm 10b (flatly locating in the drawings) and elastic arm 10a (being vertically to locate in accompanying drawing) in this example, and can support this bimetallic 4.This elastic arm 10a can flexibly act on contrary thrust (being appreciated that from accompanying drawing elastic reactance applies when limited part 4a is pushed away left to the right) on this bimetallic 4.
Free part 4b is (protruding upward in the accompanying drawings) protruding upward in the side contrary with this limited part.
Free part 4b is in the face of this release lever 5, can rotary manipulation (being counterclockwise in accompanying drawing), and it operates device for opening 2, this electrical contact of this this circuit breaker 1 of device for opening 2 positive openings.
This bimetallic 4 is suitable for bending (being clockwise in accompanying drawing), and tackles this release lever 5, so that this electrical contact of positive opening.
Provide calibrating installation 6 to calibrate the position of this bimetallic 4.
This calibrating installation 6 comprises push rod 7, and this push rod has the form of outside threaded cylinder.Described push rod 7 is supported by the fixed support body 9 of internal thread: therefore by the axial-rotation of push rod 7, realize the axial motion (in accompanying drawing to right/left) of this push rod 7.
The front position of this push rod 7 is funnel-form, and it stops with thrust surfaces 9a, and this thrust surfaces is suitable for being resisted against on the limited part 4a of this bimetallic 4.
It should be noted that, should be against contrary with the elastic force being applied by this triggering supporter 10, so that the limited part 4a of this bimetallic 4 closely remains between this push rod 7 and this triggering supporter 10, it is devoted to allow this bimetallic 4 to move to allow the position of this bimetallic 4 of calibration.
According to the present invention, this push rod 7 is hollow axially, and inside has a cavity, and this cavity can be accepted the Allen key or other screw that axially insert.
In addition, this push rod 7 comprises the gear 8 of circumferential formation, to also allow circumferential action when there is no Allen key, to rotate this push rod 7.
This gear 8 more radially extends with respect to this push rod 7, and protrudes in the calibration opening of making from this case for circuit breaker: by this way, the outside that can calibrate opening from this contacts this gear 8, and can use with the gear tool of this gear 8 couplings and rotate it.
This calibration opening (as apparent structure, invisible in the accompanying drawings) allows only to approach this gear 8, therefore can not damage other element of this circuit breaker 1.
Therefore this calibration operation can be summarized as:
-pre-calibration operation, its by Allen key axially enter rotate this push rod 7 and realize; This operation last, this bimetallic 4 is positioned at the pre-calibration position shown in Fig. 1 and 2;
The operation of-accurate calibration subsequently, it rotates this push rod 7 by the circumferential movement on gear 8 (axially not entering) and realizes; This operation last, this bimetallic 4 is positioned at the calibrating position shown in Fig. 3 and 4, wherein the free part 4b of this bimetallic 4 and this release lever 5 without pressure contact.
Advantageously, the method for description allows to adopt automatically and the pre-calibration of Allen key execution fast, and uses the gear that radial dimension is large as far as possible to carry out accurate calibration, to allow high-accuracy calibration.
Advantageously, adopt in this way, can be first in the pre-assembled process of described circuit breaker 1, carry out pre-calibration in the production process of this circuit breaker 1, and after only in it has been received into the shell with immutable seal, carry out the accurate calibration of this circuit breaker 1.Therefore, it also can calibrate this circuit breaker after operation for a long time again, and does not need to open the shell of this circuit breaker 1, does not therefore need those skilled in the art.
Explanation based on providing, further feature, modification or improvement are fine for a person skilled in the art and are obvious.Therefore, such feature, modification or improvement should be regarded as a part of the present invention.In fact, as required and the regulation of technology, the material of use and portion size and profile can be arbitrarily.
Claims (4)
1. one kind for opening and close the low-voltage circuit breaker (1) of electrical contact, and this low-voltage circuit breaker provides the hot safety system of bimetal type (3), has:
-device for opening (2), is suitable for forcing described electrical contact to open,
-release lever (5), is suitable for operating described device for opening,
-there is the bimetallic (4) of limited part (4a) and free part (4b), can tackle described release lever (5) to operate described device for opening (2);
Be provided with calibrating installation (6), to calibrate the position of described bimetallic (4), described calibrating installation (6) comprises the push rod (7) that promotes described bimetallic (4), to the position of described bimetallic (4) is set, it is characterized in that,
Described push rod (7) supports by having the fixed support body (9) of screw thread couple, to allow described push rod (7) to move axially by the described push rod of rotation (7); And
Described push rod (7) inner hollow, to accept the axially screw of insertion, thereby described push rod can be by axially entering and move; And
Described push rod (7) comprises the gear (8) of circumferential formation, to allow the action that rotates in a circumferential direction of described push rod (7);
Described gear (8) more radially extends with respect to described push rod (7), and described gear (8) be positioned at described low-voltage circuit breaker (1) shell near, and can by the calibration opening made in described shell from external contact to.
2. according to the low-voltage circuit breaker of claim 1, it is characterized in that described limited part (4a) is fastened on a triggering supporter (10), this triggers supporter can be crooked, and can apply elastic reactance for the thrust of described push rod (7), to described limited part (4a) is closely remained between described push rod (7) and described triggering supporter (10).
3. low-voltage circuit breaker according to claim 1, is characterized in that described freely part (4b) is positioned at one end in the face of described release lever (5) of described bimetallic (4).
4. low-voltage circuit breaker according to claim 3, is characterized in that described limited part (4a) is positioned at the other end of described bimetallic (4).
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| ITMI2008U000335 | 2008-10-15 | ||
| ITMI20080335 ITMI20080335U1 (en) | 2008-10-15 | 2008-10-15 | LOW VOLTAGE SWITCH |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101728128A CN101728128A (en) | 2010-06-09 |
| CN101728128B true CN101728128B (en) | 2014-09-24 |
Family
ID=41478886
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200910211658.6A Active CN101728128B (en) | 2008-10-15 | 2009-10-15 | Low voltage circuit breaker |
Country Status (5)
| Country | Link |
|---|---|
| EP (1) | EP2178101B1 (en) |
| CN (1) | CN101728128B (en) |
| AU (1) | AU2009222595B2 (en) |
| IT (1) | ITMI20080335U1 (en) |
| RU (1) | RU2524402C2 (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102011078636A1 (en) * | 2011-07-05 | 2013-01-10 | Siemens Aktiengesellschaft | Overload release, especially for a circuit breaker |
| CN205789807U (en) | 2016-06-27 | 2016-12-07 | 施耐德电器工业公司 | A kind of hot dropout collocation structure |
| FR3126059A1 (en) * | 2021-08-06 | 2023-02-10 | Schneider Electric Industries Sas | Electrical protection device with thermal trip, electrical panel comprising such a device and method for adjusting such a device |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0338868A1 (en) * | 1988-04-21 | 1989-10-25 | Hager Electro S.A. | Modular electrical protection or control apparatus |
| EP0710973A1 (en) * | 1994-10-18 | 1996-05-08 | Bticino S.P.A. | A magneto-thermic switch having thermal protection which can be calibrated mechanically and associated method of calibration |
| EP1202317A1 (en) * | 2000-10-23 | 2002-05-02 | ABL SURSUM BAYERISCHE ELEKTROZUBEHÖR GmbH & Co. KG | Circuit breaker with bimetal calibration |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU1756971A1 (en) * | 1990-12-26 | 1992-08-23 | Ульяновский политехнический институт | Automatic switch |
-
2008
- 2008-10-15 IT ITMI20080335 patent/ITMI20080335U1/en unknown
-
2009
- 2009-10-01 EP EP20090171999 patent/EP2178101B1/en active Active
- 2009-10-05 AU AU2009222595A patent/AU2009222595B2/en active Active
- 2009-10-14 RU RU2009138070/07A patent/RU2524402C2/en active
- 2009-10-15 CN CN200910211658.6A patent/CN101728128B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0338868A1 (en) * | 1988-04-21 | 1989-10-25 | Hager Electro S.A. | Modular electrical protection or control apparatus |
| EP0710973A1 (en) * | 1994-10-18 | 1996-05-08 | Bticino S.P.A. | A magneto-thermic switch having thermal protection which can be calibrated mechanically and associated method of calibration |
| EP1202317A1 (en) * | 2000-10-23 | 2002-05-02 | ABL SURSUM BAYERISCHE ELEKTROZUBEHÖR GmbH & Co. KG | Circuit breaker with bimetal calibration |
Also Published As
| Publication number | Publication date |
|---|---|
| RU2524402C2 (en) | 2014-07-27 |
| AU2009222595A1 (en) | 2010-04-29 |
| EP2178101A1 (en) | 2010-04-21 |
| RU2009138070A (en) | 2011-04-20 |
| CN101728128A (en) | 2010-06-09 |
| ITMI20080335U1 (en) | 2010-04-16 |
| EP2178101B1 (en) | 2014-12-10 |
| AU2009222595B2 (en) | 2015-05-14 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US8129641B2 (en) | Installation switchgear having a spring-loaded terminal arrangement | |
| CN101728128B (en) | Low voltage circuit breaker | |
| EP2472548B1 (en) | Shape memory alloy actuated circuit breaker | |
| US9202655B2 (en) | Trip unit and method for producing one such trip device | |
| CA2956100C (en) | A switching device for lv electric installations | |
| US8309872B2 (en) | Insulating switching rod | |
| ITMI20090010A1 (en) | INTERRUPTION DEVICE FOR LOW VOLTAGE SYSTEMS | |
| KR101759594B1 (en) | A circuit braker | |
| EP2383766B1 (en) | Electrical resetting apparatus adapted to be associated to a protection device for automatic resetting thereof | |
| KR101721105B1 (en) | A method for controlling gap of circuit braker | |
| EP3343710B1 (en) | Position indicator of air circuit breaker | |
| JP2008270024A (en) | Circuit breaker | |
| US20060109073A1 (en) | Circuit breaker | |
| EP2770521B1 (en) | Thermo magnetic trip unit for a circuit breaker and circuit breaker | |
| ITMI20090009A1 (en) | COMMAND MECHANISM FOR AN INTERRUPTING DEVICE AND DEVICE OF INTERRUPTION INCLUDING SUCH MECHANISM. | |
| US2786917A (en) | Circuit breaker trip device | |
| GB2474238A (en) | Thermostatic and thermal cut-out switch | |
| JP2001345038A (en) | Circuit-breaker | |
| US3265832A (en) | Electrical control device with adjustable calibration locking means | |
| US9627160B1 (en) | Systems and methods for rotary knob friction adjustment control | |
| KR100550270B1 (en) | Trip mechanisim of molded case circuit breaker | |
| CN117293762A (en) | High-precision motor maintainer based on electromagnetic drive | |
| CN103208399B (en) | For the most advanced and sophisticated device of adjustment bimetal leaf |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| 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 | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20200106 Address after: Baden, Switzerland Patentee after: ABB Switzerland Co., Ltd. Address before: Milan Italy Patentee before: ABB Joint Stock Company |
|
| TR01 | Transfer of patent right |