CN101295608A - Circuit breaker - Google Patents
Circuit breaker Download PDFInfo
- Publication number
- CN101295608A CN101295608A CNA2007101406510A CN200710140651A CN101295608A CN 101295608 A CN101295608 A CN 101295608A CN A2007101406510 A CNA2007101406510 A CN A2007101406510A CN 200710140651 A CN200710140651 A CN 200710140651A CN 101295608 A CN101295608 A CN 101295608A
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- circuit
- mentioned
- breaker
- bar
- latch
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Abstract
The invention acquires a circuit breaker which is in free of electrification only if an inserted pin is not inserted. A circuit breaker includes: an over-current tripping element including double metal sheets (16) which are bent corresponding to heating value based on the electrified current; a tripping bar (7) which is configured along the over-current tripping element and includes an inclined operating face corresponding to the double metal sheets; and an on-off mechanism part (3) which cuts off the electrified current by utilizing the rotation of the tripping bar caused by the clip-joint of the double metal sheets and the inclined operating face, the tripping bar can axially offset at the same time of being positioned by the inserted pin which is inserted into a concavity of the circuit breaker, and has a plurality of inserted pins with different shapes; with replacement of the inserted pins, the clip-joint position of the double metal sheets and the inclined operating face is changeable corresponding to the offset of the tripping bar, wherein a closed circuit prohibition unit is included which prohibits the closed circuit of the circuit breaker in a state that the inserted pin is not inserted into the concavity.
Description
Technical field
The present invention relates to the over current trip of tie breakers such as Inturruptor for sub-line or residual current circuit breaker, especially, relate to circuit-breaker, promptly with following function, can change the rated current of this circuit-breaker by changing the latch that inserts in the recess that is arranged on the circuit-breaker.
Background technology
Circuit-breaker not only has by operating console switch that this circuit-breaker has and circuit is carried out the function of break-make, it is switching function, and bearing following important function, that is, and in order to prevent to burn out and cut off circuit in advance because of flowing through electric wire that overcurrent causes or load appliance.As everyone knows, when the detection of this overcurrent, rough classification is variety of ways such as thermal type, electromagnetic type, electronic type, wherein, in electronic type, by by built-in CPU (CentralProcessing Unit: central processing unit) signal that is obtained by the current transformer that carries is carried out calculation process and carry out in this circuit-breaker.
But, this electronic circuit breaker, because need be with the electronic circuit headed by aforesaid current transformer and the CPU, so inevitable ground price rises, particularly for the abbreviation of AF (ampereframe (ampere framework): represent by the maximum that this circuit-breaker can be switched on) little product is (specifically, 63AF, 125AF etc.), differ very big with the price of thermal type circuit-breaker.Therefore, in the thermal type circuit-breaker, known a kind of so-called thermal type electric current can be adjusted circuit-breaker, it is by changing the latch that inserts in the recess that is arranged on this circuit-breaker, make the slit between bimetal leaf and the trip(ping) bar variable, thereby can change the setting (for example with reference to patent documentation 1) of rated current.
Patent documentation 1: No. 5392016 communique of United States Patent (USP) (the 3rd is listed as the 9th～the 24th row Fig. 3)
Summary of the invention
Existing thermal type electric current can be adjusted circuit-breaker, by the Fig. 3 in the patent documentation 1 as can be known, is forgetting that the slit minimum between bimetal leaf and the trip(ping) bar promptly, can be switched on the minimum rated current of circuit-breaker under the situation of inserting latch.
Under this situation; rated current is set to minimum value; viewpoint from so-called error protection; can be described as desirable (if rated current is a maximum; the possibility that then can not prevent the electric wire scaling loss increases), still, do not insert latch and directly energising;, be desirable state hardly for example considering that dust, dust or foreign matter enter from recess under the inner situation.In addition, latch not insertion can cause can not determine the rated current of circuit-breaker, and owing to can not determine that rated current can cause arbitrarily assert rated current, these all can cause tripping operation suddenly etc., whichsoever, all be the parts that should insert do not insert and switch on the problem that should improve.
The present invention proposes in order to address the above problem, and its purpose is, a kind of circuit-breaker is provided, as long as it does not insert latch does not just switch on.
Circuit-breaker involved in the present invention, it has: the overcurrent trip element, it has bimetal leaf, and this bimetal leaf is with corresponding and be out of shape with ormal weight based on the caloric value of the electrical current that flows through in the circuit; Trip(ping) bar, it has corresponding with above-mentioned bimetal leaf and tilting action face that be provided with along this overcurrent trip arrangements of components; And on off mechanism portion, it utilizes above-mentioned bimetal leaf and tilting action face to engage the rotation of the above-mentioned trip(ping) bar that causes, cut off above-mentioned electrical current, above-mentioned trip(ping) bar can be to the axial dipole field of this trip(ping) bar, simultaneously be arranged on latch location in the recess on this circuit-breaker by insertion, and possesses variform a plurality of latch, by changing this latch, the clamped position of above-mentioned bimetal leaf and above-mentioned tilting action face, variable corresponding to the skew of above-mentioned trip(ping) bar, wherein, closed circuit prohibiting function is arranged, it forbids the closed circuit of foregoing circuit circuit breaker under above-mentioned latch does not insert state in the recess.
The effect of invention
Circuit breaker in a circuit according to the invention, because as long as not inserting latch does not just switch on, thus can obtain a kind of energising reliability height, and the cheap electric current that can bring into play electric power and do not have the hit power can be adjusted circuit-breaker.
Except above-mentioned explanation, purpose of the present invention, feature, effect, by the detailed description and the accompanying drawing record of following execution mode, can be clearer.
Description of drawings
Fig. 1 is the figure of schematic configuration of the circuit-breaker of expression embodiments of the present invention 1.
Fig. 2 is the figure that the major part to embodiments of the present invention 1 describes, and is that the state under the situation of latch is inserted in expression.
Fig. 3 is the figure of an example of variform a plurality of latches of use in the expression embodiments of the present invention 1.
Fig. 4 is the figure that the major part to embodiments of the present invention 1 describes, and is the figure that the state under the situation of the latch different with Fig. 2 is inserted in expression.
Fig. 5 is the figure that the major part to embodiments of the present invention 1 describes, the figure of the state under the situation that to be expression extract latch from the recess of circuit breaker.
Fig. 6 is the figure that expression embodiments of the present invention 2 are inserted the state under the situation of latches.
Fig. 7 is the figure of an example of the shape of the latch of use in the expression embodiments of the present invention 2.
Fig. 8 is the figure of the state of latch when extracting of expression enforcement state 2 of the present invention.
Fig. 9 is the figure of the state of the latch of expression enforcement state 3 of the present invention when inserting.
Figure 10 is the figure that the operating grip of expression in the enforcement state 3 of the present invention extracted the state of latch when being positioned at on-position.
Figure 11 is the figure that the operating knob of expression in the enforcement state 3 of the present invention extracted the state of latch when being positioned at open position.
Embodiment
Referring to figs. 1 through Fig. 5 embodiments of the present invention 1 are described.
Fig. 1 is the summary construction diagram that is suitable for the circuit-breaker of function of the present invention, as to have the rated current that can change circuit-breaker by changing latch.Fig. 2 to Fig. 5 is used to illustrate the concrete structure of circuit-breaker of execution mode 1 and the key diagram of action, and in addition, among the figure, same label is represented identical or suitable part.
Among Fig. 1, the 1st, the housing of casting resin system, the 2nd, be used to make the operating grip of closing of power circuit breaker, disconnection, s is a fixed contact therefor, and m is movable contact, the 3rd, with the on off mechanism portion of movable contact m binding, the 4th, the lock of on off mechanism portion 3 (latch), the 7th, trip(ping) bar (seeing aftermentioned for details).The 9th, cause the trip arm of lock 4 by the rotation of trip(ping) bar 7,10 are provided in a side of the variable arm on the trip(ping) bar 7, collaborative and carry out the axial location of trip(ping) bar 7 with latch described later 12, the 11st, circuit, the 12nd, be used for the latch of the rated current of initialization circuit circuit breaker, for example shown in Fig. 3 (a) and (b), (c), has variform a plurality of latch, by changing these latches, as described later, the clamped position of the tilting action face of bimetal leaf and trip(ping) bar is changed, change the set point of rated current.The 16th, as the bimetal leaf of overcurrent trip element, it cuts off circuit with corresponding and with ormal weight distortion, make trip(ping) bar 7 actions and drive on off mechanism portion 3 based on the caloric value of the electric current that flows through circuit 11.
In the circuit-breaker that constitutes like this,, then make movable contact m break-make via on off mechanism portion 3 if operating grip 2 is connected opening operation.Flow through the electric current bigger than rated value in the ifs circuit 11, then detected by bimetal leaf 16, by making lock 4 actions, on off mechanism portion 3 becomes tripped condition, disconnects movable contact m.
Below with reference to Fig. 2 to Fig. 5, to major part of the present invention, be that the method and the closed circuit unit of forbidding of electric current adjustable settings describes.
Fig. 2 (a) is the front view of wanting portion of expression execution mode 1, Fig. 2 (b) is the right side view of Fig. 2 (a), Fig. 2 (c) is the end view (figure that beneath Fig. 2 (b) obtains from figure) of Fig. 2 (b), they are illustrated in variform a plurality of latches shown in Figure 3, the latch of Fig. 3 (a) are inserted the example in the recess of circuit breaker.Similarly, Fig. 4 (a) and (b) are the latches that change Fig. 3 (a), the latch of Fig. 3 (c) are inserted the example in the recess of circuit breaker, and Fig. 5 is expression is extracted latch from the recess of circuit breaker a situation.
At first, the method to the electric current adjustable settings describes.
If flow through the long overcurrent in characteristic zone in limited time in the circuit of circuit breaker 11, then bimetal leaf 16 bendings contacts and make trip(ping) bar 7 rotations with tilting action face 8 on being located at trip(ping) bar 7.Trip(ping) bar 7 causes the lock 4 of on off mechanism portion 3 via trip arm 9.Therefore, by the gap length between change bimetal leaf 16 and the tilting action face 8, can set tripping current.Promptly, the setting of gap length is performed such: the position that will be located at the variable arm 10 on the trip(ping) bar 7, be limited between first projection 13 and second projection 14 of latch 12,, utilize arbitrarily the position to set gap length so that in the scope of the latch setting range a of tilting action face 8.
In addition, as shown in Figure 3, in order to adjust the position of variable arm 10, latch 12 comprises that (a) of the width change that becomes projection 13,14 is to a plurality of latches such as (c).
In addition, trip(ping) bar 7 is configured to the left and right direction and slides via running through pin 6, by spring 18 to axially (left among the figure to) pressurization.
Therefore, as shown in Figure 4, by latch 12 is replaced by the latch shown in Fig. 3 (c) by the latch shown in Fig. 3 (a), trip(ping) bar 7 antagonistic springs 18 and to axially (right) skew, its result, the gap between bimetal leaf 16 and the tilting action face 8 changes to the gap2 of Fig. 4 (a) from the gap1 of Fig. 2 (b).That is to say, can change the setting of the current ratings of circuit-breaker.
Below, the closed circuit unit of forbidding is described.
Fig. 5 represents state that latch 12 is extracted from the circuit-breaker recess.
In this execution mode 1, under the state of extracting latch 12, trip(ping) bar 7 is not subjected to the restriction of variable arm 10, is pushed by spring 18 and moves to left.In addition, right part b is set on tilting action face 8, it is in outside the latch limited field.
Therefore, under the situation of extracting latch 12, bimetal leaf 16 is at the right part b outside the latch limited field of being in of tilting action face 8, contact with the tilting action face 8 of trip(ping) bar 7, even under the state of the bending that does not cause because of overcurrent, bimetal leaf 16 also contacts with trip(ping) bar 7, and trip(ping) bar 7 rotates and circuit breaker trip.
Like this, in embodiments of the present invention 1, owing under the situation that latch 12 is extracted, trip(ping) bar 7 is moved, constitutes the closed circuit unit of forbidding, even so that under the state of the bending that does not cause because of overcurrent, the tilting action face 8 of bimetal leaf 16 and trip(ping) bar 7 also contacts, so by this closed circuit unit of forbidding, only otherwise insert latch, circuit-breaker is exactly a tripped condition and not switching on, and can obtain cheap thus and the high electric current of reliability can be adjusted circuit-breaker.
Fig. 6 to Fig. 8 represents the circuit-breaker of embodiments of the present invention 2, and Fig. 6 is that latch inserts the figure in the recess of circuit-breaker, and Fig. 7 is the figure of an example of expression latch shape, and Fig. 8 represents situation that latch is extracted from the recess of circuit-breaker.In addition, the label identical with aforementioned embodiments 1 among the figure represented identical or suitable part, and the repetitive description thereof will be omitted.
In this execution mode 2, dispose bar 21.Bar 21 is supported in the mode that can upwards slide in (b) at Fig. 6 (a), is exerted pressure upward by spring 19 grades.Under the state in the recess of latch 12 insertion circuit-breakers, the inclined-plane 23 of bar 21 contacts and static with latch 12, and the trip portion 22 of bar 21 is guaranteed the gap with lock 4.
If extract latch 12, then as shown in Figure 8, bar 21 is pushed upward by spring 19, and the lock 4 in the trip portion 22 proximity switch mechanisms of bar 21 makes circuit breaker trip.
On the contrary, if insert latch 12 under this state, then the face crosswise 15 of latch 12 contacts with the inclined-plane 23 of bar 21, if push latch 12, then bar 21 is pushed to the below simultaneously along face 15 slips crosswise, thereby removes tripped condition.(with reference to figure 6)
Like this, by execution mode 2, under the situation of pulling out latch 12,, can obtain the effect same with execution mode 1 by having the closed circuit unit of forbidding that causes the lock 4 of on off mechanism portions 3 by bar 21.
Fig. 9 to Figure 11 represents the circuit-breaker of embodiments of the present invention 3, Fig. 9 inserts figure in the recess of circuit-breaker with latch, Figure 10 is the figure that the operating grip of circuit-breaker is extracted latch when being positioned at on-position, and Figure 11 is the figure that the operating grip of circuit-breaker is extracted latch when being positioned at open position.In addition, label identical with aforementioned embodiments 2 among the figure is represented identical or suitable part, and the repetitive description thereof will be omitted.
In this execution mode 3, the front end of bar 21 forms retainer 24, under the state that latch 12 inserts, as shown in Figure 9, near the operating grip front end 30 when the operating grip 2 that retainer 24 is positioned in circuit-breaker is positioned at open position, perhaps with operating grip front end 30 position contacting a little.
Extract latch 12 if be positioned at this operating grip 2 under the state of open position, then as described in the enforcement mode 2, bar 21 is pushed to top among the figure by spring 19, but moving by retainer 24 and operating grip front end 30 of bar 21 stop, and trip portion 22 can not cause tripping operation.(with reference to Figure 11)
Therefore, be at operating grip 2 under the state of open position, can not trip action and the insertion of carrying out latch 12 is replaced.
On the other hand, extract latch 12, then as shown in figure 10,, can be moved upward, make circuit breaker trip so retainer 24 is a bar 21 because operating grip front end 30 moves if be at operating grip 2 under the state of on-position.
Like this, in execution mode 3, as the closed circuit front end of the bar 21 of unit of forbidding retainer 24 is being set, corresponding with connection, the open position of operating grip and stop moving of bar, or it can be moved, thus with the basis of execution mode 2 effect same on, also has following effect, that is, can operating grip 2 for the state that disconnects under, do not trip action and the insertion of carrying out latch 12 is replaced.
Claims (5)
1. circuit-breaker, it has: the overcurrent trip element, it has bimetal leaf, and this bimetal leaf is with corresponding and be out of shape with ormal weight based on the caloric value of the electrical current that flows through in the circuit; Trip(ping) bar, it has corresponding with above-mentioned bimetal leaf and tilting action face that be provided with along this overcurrent trip arrangements of components; And on off mechanism portion, it utilizes above-mentioned bimetal leaf and tilting action face to engage the rotation of the above-mentioned trip(ping) bar that causes, and cuts off above-mentioned electrical current,
This circuit circuiting appliance has following function, promptly, above-mentioned trip(ping) bar can be to the axial dipole field of this trip(ping) bar, simultaneously be arranged on latch location in the recess on this circuit-breaker by insertion, and possesses variform a plurality of latch, by changing this latch, the clamped position of above-mentioned bimetal leaf and above-mentioned tilting action face, variable corresponding to the skew of above-mentioned trip(ping) bar
It is characterized in that,
Have the closed circuit unit of forbidding, it forbids the closed circuit of foregoing circuit circuit breaker under above-mentioned latch does not insert state in the recess.
2. circuit-breaker as claimed in claim 1 is characterized in that,
The above-mentioned closed circuit unit of forbidding makes the action of tripping of this circuit-breaker under the situation that above-mentioned latch is extracted from recess.
3. circuit-breaker as claimed in claim 2 is characterized in that,
The above-mentioned closed circuit unit of forbidding constitutes, and under the situation that above-mentioned latch is extracted from recess, above-mentioned trip(ping) bar is displaced to makes above-mentioned tilting action face and above-mentioned bimetal leaf position contacting, makes the action of tripping of foregoing circuit circuit breaker.
4. circuit-breaker as claimed in claim 2 is characterized in that,
The above-mentioned closed circuit unit of forbidding has bar, and this bar is pressurizeed by spring, is offset under the situation that above-mentioned latch is extracted from recess, so that the action of above-mentioned on off mechanism portion makes the circuit-breaker tripping operation.
5. circuit-breaker as claimed in claim 4 is characterized in that,
Front end at above-mentioned bar forms retainer, under the situation that above-mentioned latch is extracted from recess, when the operating grip of foregoing circuit circuit breaker is in open position, above-mentioned retainer and above-mentioned handle front end butt and stop moving of above-mentioned bar, the off-state of holding circuit circuit breaker, when the aforesaid operations handle is in on-position, above-mentioned bar skew and make the action of above-mentioned on off mechanism portion.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2007113148A JP4889555B2 (en) | 2007-04-23 | 2007-04-23 | Circuit breaker |
| JP2007-113148 | 2007-04-23 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101295608A true CN101295608A (en) | 2008-10-29 |
| CN101295608B CN101295608B (en) | 2011-01-26 |
Family
ID=40049259
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2007101406510A Expired - Fee Related CN101295608B (en) | 2007-04-23 | 2007-09-21 | Circuit breaker |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JP4889555B2 (en) |
| CN (1) | CN101295608B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102013366A (en) * | 2009-09-04 | 2011-04-13 | 三菱电机株式会社 | Breaker |
| CN107615439A (en) * | 2015-05-15 | 2018-01-19 | 三菱电机株式会社 | The heat of circuit-breaker moves tripping mechanism |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101438043B1 (en) | 2013-10-17 | 2014-09-04 | 엘에스산전 주식회사 | Trip device for curcuit breaker |
| CN104810191A (en) * | 2015-03-26 | 2015-07-29 | 安徽智瑞电气有限公司 | Air switch |
| CN110277286A (en) * | 2018-03-13 | 2019-09-24 | 浙江思创电力科技股份有限公司 | A kind of breaker mechanism |
Family Cites Families (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4270113A (en) * | 1979-04-06 | 1981-05-26 | Westinghouse Electric Corp. | Thermal overload relay |
| JPS5672451A (en) * | 1979-11-16 | 1981-06-16 | Ricoh Co Ltd | Changing method of continuous copying sheet number |
| JPS62149144A (en) * | 1986-08-18 | 1987-07-03 | Sanyo Electric Co Ltd | Hybrid integrated circuit |
| ES2069566T3 (en) * | 1988-11-28 | 1995-05-16 | Kloeckner Moeller Gmbh | THERMAL RELAY WITH BIMETAL COMPENSATION. |
| US5392016A (en) * | 1993-11-08 | 1995-02-21 | General Electric Company | Molded case circuit breaker mechanical rating plug |
| US5381120A (en) * | 1993-11-15 | 1995-01-10 | General Electric Company | Molded case circuit breaker thermal-magnetic trip unit |
| JPH09298025A (en) * | 1996-04-30 | 1997-11-18 | Fuji Electric Co Ltd | Trip current adjusting mechanism for circuit breaker |
| CN1071050C (en) * | 1996-09-30 | 2001-09-12 | 西门子公司 | Method and device for regulating hot overload circuit breaker |
| US5894259A (en) * | 1997-04-14 | 1999-04-13 | Eaton Corporation | Thermal trip unit with magnetic shield and circuit breaker incorporating same |
| JPH10289643A (en) * | 1997-04-15 | 1998-10-27 | Mitsubishi Electric Corp | Earth leakage breaker |
| JP3794450B2 (en) * | 1998-06-15 | 2006-07-05 | 富士電機機器制御株式会社 | Circuit breaker trip crossbar |
-
2007
- 2007-04-23 JP JP2007113148A patent/JP4889555B2/en not_active Expired - Fee Related
- 2007-09-21 CN CN2007101406510A patent/CN101295608B/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102013366A (en) * | 2009-09-04 | 2011-04-13 | 三菱电机株式会社 | Breaker |
| CN102013366B (en) * | 2009-09-04 | 2013-11-06 | 三菱电机株式会社 | Breaker |
| CN107615439A (en) * | 2015-05-15 | 2018-01-19 | 三菱电机株式会社 | The heat of circuit-breaker moves tripping mechanism |
| CN107615439B (en) * | 2015-05-15 | 2019-05-07 | 三菱电机株式会社 | The heat of circuit-breaker moves tripping mechanism |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2008270024A (en) | 2008-11-06 |
| JP4889555B2 (en) | 2012-03-07 |
| CN101295608B (en) | 2011-01-26 |
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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 | ||
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110126 Termination date: 20120921 |