CN1953123A - Low-voltage circuit breaker with function of rapid action - Google Patents
Low-voltage circuit breaker with function of rapid action Download PDFInfo
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- CN1953123A CN1953123A CN 200610154559 CN200610154559A CN1953123A CN 1953123 A CN1953123 A CN 1953123A CN 200610154559 CN200610154559 CN 200610154559 CN 200610154559 A CN200610154559 A CN 200610154559A CN 1953123 A CN1953123 A CN 1953123A
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- circuit breaker
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Abstract
The invention relates to a low-voltage circuit chopper with quick activate function. Wherein, it comprises frame and handle; said frame has operator, arc extinguish system, electromagnetic detaching system, relative movable and stable contactors; the invention is characterized in that there is an activator between electromagnetic detaching system and operator; said activator is axially connected to the frame, with the first rod opposite to the iron core of electromagnetic detaching system and the second rod opposite to the detaching rod of operator; the rotation arm of first rod is higher than the one of second rod; the pushing force of iron core is amplified by the lever of activator, to push the detaching rod to trip, therefore, the movable and stable contactors of chopper can be cut off reliably; and since the activator is between the detaching system and operator, it will not increase the volume of chopper.
Description
Technical field
The present invention relates to a kind of low-voltage electrical apparatus, relate in particular to a kind of low-voltage circuit breaker, is a kind of low-voltage circuit breaker with fast actuating function specifically.
Background technology
As everyone knows, low-voltage electric system need use suitable protective device, and this protective device generally is circuit breaker and miniature circuit breaker.The width of miniature circuit breaker all is the multiple of the width of the width of standard module or standard module, and in relevant international standard, miniature circuit breaker generally is installed on the DIN track of standard.The miniature circuit breaker major requirement has such ability: can utilize the protection of guaranteeing any fault that takes place in the low-voltage electric system is carried out enough levels fast opening time, only take as far as possible little space simultaneously.
For a long time, the designer exists the problem that dynamic and static contact separates with being difficult to fast and reliable when tripping operation takes place circuit when designing the low-voltage miniature circuit breaker of big electric current (for example rated current of 125A).Because when tripping operation takes place, if promote the power deficiency of the release lever of circuit breaker operation mechanism, will prolong the break-time of circuit breaker so, the dynamic and static contact of circuit breaker can not be separated reliably.In order to obtain the release lever that bigger power promotes operating mechanism, certainly will will require the electromagnetic trip system that enough big power is provided, will strengthen the volume of electromagnetic trip system so virtually, its size is often big must be incompatible with the housing of miniature circuit breaker.
Summary of the invention
What the present invention will solve is the problems referred to above that prior art exists, and a kind of low-voltage circuit breaker with fast actuating function is provided, and when being intended to not increase the volume of electromagnetic trip system, can make the dynamic and static contact of circuit breaker reliable, separate fast.
The technical scheme that addresses the above problem employing is: the low-voltage circuit breaker with fast actuating function, comprise housing and handle, be provided with operating mechanism in the described housing, arc quenching system, the fixed contact and the moving contact of electromagnetic trip system and configuration relatively, it is characterized in that between described electromagnetic trip system and operating mechanism, also being provided with an actuator, described actuator is articulated on the described housing, comprise with first bar of the unshakable in one's determination relative configuration of described electromagnetic trip system and with the release lever of described operating mechanism second bar of configuration relatively, and the rotation arm of force of described first bar is greater than the rotation arm of force of second bar.
Low-voltage circuit breaker with fast actuating function of the present invention, when the current strength of tie breaker surpasses reservation threshold, the iron core of described electromagnetic trip system is because the effect of magnetic force produces first bar that motion removes to promote actuator, actuator rotates immediately, and the release lever that its second bar promotes described operating mechanism produces the tripping operation action.Because the rotation arm of force of described actuator first bar is greater than the rotation arm of force of second bar, thereby the thrust that the iron core of described electromagnetic trip system produces is amplified by the leverage of actuator, then promote release lever tripping operation again, make the dynamic and static contact of circuit breaker can be more reliably, disconnect apace.And, because described actuator is arranged between electromagnetic trip system and the operating mechanism, need not increase the volume of circuit breaker, can make circuit breaker keep compact conformation.
As a further improvement on the present invention, also be provided with a back-moving spring on the described actuator.Make the dynamic and static contact of circuit breaker reliable when actuator forwards actuated position to, fast separately after, this back-moving spring is withdrawn into resting position with actuator, so as current strength recover normal after, the dynamic and static contact of circuit breaker can close.
Description of drawings
The invention will be further described below in conjunction with drawings and Examples.
Fig. 1 is the structural representation of circuit breaker of the present invention.
Fig. 2 is the structural representation of actuator and linkage part thereof, and this moment, the dynamic/static contact of circuit breaker was in on-state.
Fig. 3, Fig. 4 are the process exploded views that the circuit breaker dynamic/static contact separates.
Fig. 5 is the schematic diagram that circuit breaker is in the complete off-state of dynamic/static contact.
Embodiment
Referring to Fig. 1, the low-voltage circuit breaker 1 (circuit breaker is in closing position among the figure) with fast actuating function has housing 10, and handle 3 is installed on the pivot 2 of housing 10, and handle 3 can rotate between closing position and open position around pivot 2.Operating mechanism 6 is installed on the pivot 5 in the housing 10, rotates between closing position and open position around pivot 5, and the final moving contact 8 that is assemblied on the operating mechanism 6 that makes rotates between closing position and open position.Connecting rod 4 is used to connect handle 3 and operating mechanism 6, makes circuit breaker 1 form parallel motion.Release lever 7 is installed on the operating mechanism 6, and its effect is conspicuous, under the promotion of electromagnetic trip system 15 iron cores 23, can disintegrate quadric chain fast, thereby accelerates the motion of moving contact 8.Fixed contact 13 is installed in the housing 10, with the match power supply of incompatible realization circuit of moving contact.
Referring to Fig. 2, electromagnetic trip system 15 is positioned at the below of housing 10 inner handles 3, it have one straight-line moving unshakable in one's determination 23, coil 22 is wrapped on moving unshakable in one's determination 23.Arc quenching system 12 is installed in the housing 10, is positioned at the below of electromagnetic trip system 15.It has run-on tab 9,11 and arc control device 14.
Actuator 18 is installed on the pivot 17 of housing 10, and between electromagnetic trip system 15 and operating mechanism 6, such installation makes the existence of actuator 18 need not to increase the length and the height of housing 10.Actuator 18 has first bar 21, second bar 19 and the rotary body 20 that is connected first bar 21 and second bar 19.One end of back-moving spring 16 leans against on first bar 21, and the other end is limited by housing 10.
Referring to Fig. 2, Fig. 3, Fig. 4, under normal circumstances, the disconnection of circuit breaker 1 realizes by pulling handle 3.When the current strength of circuit breaker 1 surpasses reservation threshold; coil 22 will produce an enough big magnetic field; make moving unshakable in one's determination 23 in the downward direction motion shown in Figure 2 of the effect of magnetic force; and remove to promote first bar 21 of actuator 18; make actuator 18 rotate to actuated position from resting position; second bar 19 of actuator 18 removes to promote the release lever 7 of operating mechanism 6; thereby the moving contact 8 of operating mechanism 6 leaves fixed contact 13; as shown in Figure 3; moving contact 8 leave fixed contact 13 very little apart from the time; to produce electric arc; at this moment electric arc is at run-on tab 9; under 11 the effect, electric arc is introduced arc control device 14 rapidly, until extinguishing; so just realize the disconnection of circuit, protect the safety of equipment and circuit effectively.After circuit breaker 1 disconnected, magnetic force also disappeared thereupon, and actuator 18 turns back to initial resting position by actuated position, as shown in Figure 5 under the effect of spring 16.
The effective length of first bar 21 of actuator 18 is L1, and the effective length of second bar 19 is L2, and L1 is greater than L2.When the current strength of circuit breaker 1 surpasses reservation threshold; the magnetic force F1 that coil 22 produces removes to promote first bar 21 of actuator 18; the torque that produces is F1*L1; the power of the release lever 7 of 19 pairs of operating mechanisms 6 of second bar then is F2=F1*L1/L2; because L1 is greater than L2; so F2 is greater than F1; because the existence of actuator 18; magnetic force is amplified; those skilled in the art obviously can understand; the time that second bar 19 promotes the release lever 7 of operating mechanism 6 obviously reduces, and has so just reduced the break-time of circuit breaker, guarantees any fault that takes place in the low-voltage electric system is carried out the protection of enough levels.
What should be understood that is: the foregoing description is just to explanation of the present invention, rather than limitation of the present invention, and any innovation and creation that do not exceed in the connotation scope of the present invention all fall within protection scope of the present invention.
Claims (2)
1, low-voltage circuit breaker with fast actuating function, comprise housing (10) and handle (3), be provided with operating mechanism (6) in the described housing (10), arc quenching system (12), the fixed contact (13) and the moving contact (8) of electromagnetic trip system (15) and configuration relatively, it is characterized in that between described electromagnetic trip system (15) and operating mechanism (6), also being provided with an actuator (18), described actuator (18) is articulated on the described housing (10), comprise with first bar (21) of the relative configuration of iron core (23) of described electromagnetic trip system (15) and with the release lever (7) of described operating mechanism (6) second bar (19) of configuration relatively, and the rotation arm of force (L1) of described first bar (21) is greater than the rotation arm of force (L2) of second bar (19).
2, the low-voltage circuit breaker with fast actuating function as claimed in claim 1 is characterized in that also being provided with on the described actuator (18) back-moving spring (16).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200610154559 CN1953123A (en) | 2006-11-07 | 2006-11-07 | Low-voltage circuit breaker with function of rapid action |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200610154559 CN1953123A (en) | 2006-11-07 | 2006-11-07 | Low-voltage circuit breaker with function of rapid action |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1953123A true CN1953123A (en) | 2007-04-25 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200610154559 Pending CN1953123A (en) | 2006-11-07 | 2006-11-07 | Low-voltage circuit breaker with function of rapid action |
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| CN (1) | CN1953123A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101051579B (en) * | 2007-05-10 | 2010-06-09 | 浙江正泰电器股份有限公司 | Low voltage circuit breaker with quick actuating function |
| CN102187420A (en) * | 2008-10-15 | 2011-09-14 | Abb股份公司 | Low voltage circuit breaker |
-
2006
- 2006-11-07 CN CN 200610154559 patent/CN1953123A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101051579B (en) * | 2007-05-10 | 2010-06-09 | 浙江正泰电器股份有限公司 | Low voltage circuit breaker with quick actuating function |
| CN102187420A (en) * | 2008-10-15 | 2011-09-14 | Abb股份公司 | Low voltage circuit breaker |
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| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| ASS | Succession or assignment of patent right |
Owner name: ZHEJIANG ZHENGTAI ELECTRIC APPLIANCE CO., LTD. Free format text: FORMER OWNER: CORRECT ZHENGTAI GROUP CO., LTD. Effective date: 20070810 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| TA01 | Transfer of patent application right |
Effective date of registration: 20070810 Address after: 325603 CHINT Industrial Park, North white elephant, Zhejiang, Yueqing Applicant after: Zhengtai Electric Appliance Co., Ltd., Zhejiang Address before: 325604 CHINT Industrial Park, Yueqing, Zhejiang, Liushi Applicant before: Chint Group Co., Ltd. |
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| C12 | Rejection of a patent application after its publication | ||
| RJ01 | Rejection of invention patent application after publication |
Open date: 20070425 |