CN110491748A - Earth leakage circuit breaker - Google Patents
Earth leakage circuit breaker Download PDFInfo
- Publication number
- CN110491748A CN110491748A CN201910722537.1A CN201910722537A CN110491748A CN 110491748 A CN110491748 A CN 110491748A CN 201910722537 A CN201910722537 A CN 201910722537A CN 110491748 A CN110491748 A CN 110491748A
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- China
- Prior art keywords
- mandril
- support arm
- tripping
- housing unit
- circuit breaker
- 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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- 230000005540 biological transmission Effects 0.000 claims abstract description 11
- 238000006073 displacement reaction Methods 0.000 claims description 9
- 230000000694 effects Effects 0.000 claims description 5
- 230000003068 static effect Effects 0.000 claims description 5
- 238000010586 diagram Methods 0.000 description 7
- 230000015572 biosynthetic process Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000000151 deposition Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H73/00—Protective overload circuit-breaking switches in which excess current opens the contacts by automatic release of mechanical energy stored by previous operation of a hand reset mechanism
- H01H73/02—Details
- H01H73/04—Contacts
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H73/00—Protective overload circuit-breaking switches in which excess current opens the contacts by automatic release of mechanical energy stored by previous operation of a hand reset mechanism
- H01H73/36—Protective overload circuit-breaking switches in which excess current opens the contacts by automatic release of mechanical energy stored by previous operation of a hand reset mechanism having electromagnetic release and no other automatic release
- H01H73/42—Protective overload circuit-breaking switches in which excess current opens the contacts by automatic release of mechanical energy stored by previous operation of a hand reset mechanism having electromagnetic release and no other automatic release reset by rotatable knob or wheel
Landscapes
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Breakers (AREA)
Abstract
The invention belongs to field of circuit breakers, more particularly to a kind of miniature circuit breaker, including housing unit, contact assembly is equipped in housing unit, trip assembley therefor, handle, transmission component, trip assembley therefor includes magnetictrip, mandril, tripping revolving part, it threads off and is equipped with third return springs between revolving part and housing unit, the first driving elastic component is equipped between mandril and housing unit, the driving force that mandril pushes lock to complete tripping is provided by the elastic force of the first driving elastic component, and it is unrelated with the thrust size of magnetictrip, so the problems in heavy current breaker can not be applied to by solving magnetictrip in industry.
Description
Technical field
The invention belongs to field of circuit breakers, and in particular to a kind of earth leakage circuit breaker.
Background technique
It according to the type of buckle releaser used by wherein include electronic type residual current circuit breaker and electromagnetic type in miniature circuit breaker
Leakage circuit breakers, electronic type residual current circuit breaker need accessory power supply, and the accessory power supply is (negative from the leading-out terminal of leakage circuit breakers
Carry end), it is related with the operating voltage of route, it is exactly leakage current to be produced in route, and reached switch if brownout
Proof leakage current value, switch will not act；Electromagnetic-type leakage circuit breaker does not need accessory power supply, and the inside does not have wiring board
Component, unrelated with the operating voltage of switch, as long as the leakage current that route produces reaches the residual operating current of electromagnetic type, electric leakage is disconnected
Road device just acts, and cuts off power supply below, protects personal safety.But electromagnetic-type leakage circuit breaker under larger current for depositing at present
It is inadequate in electromagnetic release thrust, complete separating brake movement can not be carried out.
Summary of the invention
The purpose of the invention is to overcome shortcoming and defect of the existing technology, and provide a kind of miniature circuit breaker.
The technical solution used in the present invention is as follows: earth leakage circuit breaker, including housing unit, is equipped in housing unit
Contact assembly, trip assembley therefor, handle, transmission component, the contact assembly include static contact, moving contact and link with moving contact
Moving contact rack, the transmission component include lock, tripping, handle is "on" position, it is described lock and tripping fasten, handle
For gate-dividing state, the lock and tripping tripping, the trip assembley therefor include:
Magnetictrip, the relatively described housing unit fixed setting, is equipped with the first drive rod；
Mandril, be limited in housing unit and the relatively described housing unit can straight-line displacement, between the mandril and housing unit
Equipped with the first driving elastic component, the first driving elastic component is to the relatively described housing unit straight-line displacement forwards of the mandril
Thrust, the front of the relatively described housing unit straight-line displacement of mandril is arranged in the transmission component；
Tripping revolving part, being articulated in housing unit the relatively described housing unit can be rotated, the tripping revolving part and shell group
Third return springs are equipped between part, the tripping revolving part and the transmission of the first drive rod cooperate, in normal state, tripping
Revolving part forms fastening to mandril and acts on, under "on" position, when the first drive rod pushes away under the action of third return springs
Out, it pushes tripping revolving part that the effect of third return springs is overcome to rotate, releases and the fastening of mandril is acted on, the mandril pushes away
Dynamic lock makes lock and tripping tripping.
Tripping revolving part include for the first hinged articulated section and the first support arm being connected on the first articulated section and
Second support arm, the first support arm are located at the first drive rod launch direction side, and third return springs are to tripping revolving part shape
At the active force for making first support arm push the first drive rod to, one end of mandril is equipped with third support arm, when magnetictrip does not occur
When movement, second support arm is arranged in front of third support arm, to mandril position-limiting action, when magnetictrip acts, first
Drive rod is released, and tripping revolving part rotation releases the position-limiting action to mandril.
The trip assembley therefor further includes return unit, and being articulated in housing unit the relatively described housing unit can be rotated, described
The second driving elastic component is equipped between return unit and housing unit, the return unit setting is straight in the relatively described housing unit of mandril
The front of displacement of the lines；When handle is open position, the moving contact rack resists return unit and forms constraint, the return unit to it
It resists mandril and position-limiting action is formed to the mandril, when handle is closing position, the moving contact rack is released to return unit
Constraint, the return unit rotate under the action of the second driving elastic component, release the position-limiting action to mandril.
The return unit includes the second articulated section and the 4th support arm being connected on the second articulated section and the 5th support arm, top
Bar is equipped with the 6th support arm, and the 5th support arm is located at the right of the 6th support arm, when breaker is gate-dividing state, the 5th support arm
It cooperates to form mandril with the 6th support arm and limit, when breaker is "on" position, between the 5th support arm and the 6th support arm
Form the space for movement of threading off.
The mandril is equipped with spring leaf close to one end of magnetictrip, and the magnetictrip is equipped with the second driving
Bar, the spring leaf abut the second drive rod.
The housing unit is equipped with mandril limit sliding chutes, and mandril is limited in mandril limit sliding chutes.
The housing unit is equipped with return unit limiting section, when breaker is "on" position, the return unit limiting section support
Firmly return unit forms position-limiting action.
6th support arm of the mandril be it is U-shaped, tool there are two branch, and Liang Ge branch be located at the 5th support arm up and down
Two sides make to keep matching relationship between the 6th support arm and the 5th support arm.
Beneficial effects of the present invention are as follows: mandril pushes lock to complete the driving force of tripping by the bullet of the first driving elastic component
Power provides, and unrelated with the thrust size of magnetictrip, so high current can not be applied to by solving magnetictrip in industry
The problems in breaker.
Detailed description of the invention
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below
There is attached drawing needed in technical description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only this
Some embodiments of invention, for those of ordinary skill in the art, without any creative labor, according to
These attached drawings obtain other attached drawings and still fall within scope of the invention.
Fig. 1 is the structural schematic diagram of circuit breaker internal structure；
Fig. 2 is the enlarged diagram of A in Fig. 1；
Fig. 3 is the enlarged diagram of B in Fig. 1；
Fig. 4 is the enlarged diagram of C in Fig. 1；
Fig. 5 is the structural schematic diagram of tripping revolving part；
Fig. 6 is the structural schematic diagram of mandril；
Fig. 7 is the structural schematic diagram of return unit；
The positional relationship of Fig. 8 is breaker when being gate-dividing state each component；
The positional relationship of Fig. 9 each component when being breaker rotational handle to rigid close a floodgate；
Figure 10 is positional relationship of the breaker rotational handle to component each when completing to close a floodgate；
The positional relationship of Figure 11 each component when being electric leakage tripping；
In figure, 1, housing unit；101, return unit limiting section；102, mandril limit sliding chutes；2, static contact；3, moving contact；4, it moves
Contact supporting；5, magnetictrip；501, the first drive rod；502, the second drive rod；6, revolving part of threading off；601, first is hinged
Portion；602, first support arm；603, second support arm；604, the first spring retainer groove；7, mandril；701, third support arm；702, the 6th
Support arm；703, spring leaf；704, second spring limiting section；8, return unit；801, the second articulated section；802, the 4th support arm；803,
5th support arm；804, third spring retainer portion；9, the second driving elastic component；10, the first driving elastic component；11, third resets bullet
Property part；12, handle；13, lock；14, tripping；15, connecting rod；16, lever.
Specific embodiment
To make the object, technical solutions and advantages of the present invention clearer, the present invention is made into one below in conjunction with attached drawing
Step ground detailed description.
It should be noted that all statements for using " first " and " second " are for distinguishing in the embodiment of the present invention
Two non-equal entities of same names or non-equal parameter, it is seen that " first " " second " only for statement convenience, no
It is interpreted as the restriction to the embodiment of the present invention, subsequent embodiment no longer illustrates this one by one.
The direction and position term that the present invention is previously mentioned, for example, "upper", "lower", "front", "rear", "left", "right", "inner", "
Outside ", " top ", " bottom ", " side " etc. are only direction or position with reference to attached drawing.Therefore, the direction used and position term
It is rather than the limiting the scope of the invention to illustrate and understand the present invention.
As illustrated in figures 1 and 8, a kind of small-sized earth leakage circuit breaker, including housing unit 1,1 is equipped with touching in housing unit
Head assembly, handle 12, transmission component, contact assembly include static contact 2, moving contact 3, the moving contact rack to link with moving contact 3
4, transmission component includes the connecting rod 15 for being connected with each other cooperation, lever 16, lock 13, tripping 14, and the rotational action of handle 12 is passed
It is delivered to moving contact rack 4, moving contact 3 is made to engage or disconnect with static contact 2.
Trip assembley therefor is additionally provided in housing unit 1, trip assembley therefor includes magnetictrip 5, tripping revolving part 6, mandril 7.
Wherein, magnetictrip 5 is fixed in housing unit 1, and has the first drive rod 501, the second drive rod 502.
As shown in Fig. 2, tripping revolving part 6 is articulated in housing unit 1, and third is equipped between housing unit 1 and is resetted
Elastic component 11, as shown in figure 5, the tripping revolving part 6 includes for the first hinged articulated section 601 and being connected to the first hinge
First support arm 602 and second support arm 603 in socket part 601, the first support arm 602 are located at 501 front of the first drive rod, third
The active force that 11 pairs of the return springs formation of revolving parts 6 of threading off makes first support arm 602 push the first drive rod 501 to, the one of mandril 7
End is equipped with third support arm 701, the first driving elastic component 10 is equipped between mandril 7 and housing unit 1, when magnetictrip 5 is not sent out
When vividly making, the setting of second support arm 603 is in 701 front of third support arm, to 7 position-limiting action of mandril, when magnetictrip 5 occurs to move
When making, the first drive rod 501 is released, and is overcome the active force of third return springs 11 to make the rotation of revolving part 6 of threading off, is released to top
The position-limiting action of bar 7, mandril 7 quickly move right under the action of the first driving elastic component 10.
As shown in figure 3, the right end of mandril 7 is lock 13, when breaker is "on" position, lock 13, tripping 14 are mutually detained
It closes, when magnetictrip 5 acts, mandril 7, which quickly moves right, pushes lock 13 that lock 13, tripping 14 is made to thread off, and makes
Breaker quick acting switching-off.
In said structure, because mandril 7 pushes lock 13 to complete the driving force of tripping by the first driving elastic component 10
Elastic force provides, and unrelated with the thrust size of magnetictrip, and solving magnetictrip in industry can not be disconnected applied to high current
The problems in road device.
As shown in figure 4, trip assembley therefor further includes return unit 8, return unit 8 is articulated in housing unit, return unit 8 and shell
The second driving elastic component 9 is equipped between component 1, as shown in fig. 7, the return unit 8 includes the second articulated section 801 and is connected to
The 4th support arm 802 and the 5th support arm 803 on second articulated section 801, the moving contact rack 4 are located at 802 inverse time of the 4th support arm
The front of needle rotation direction, the second driving elastic component 9 form thrust counterclockwise to return unit 8, make return unit 8
It rotates and rotates with moving contact rack 4, the mandril 7 is equipped with the 6th support arm 702, and the 5th support arm 803 is located at the 6th
The right of arm 702, when breaker is gate-dividing state, the 5th support arm 803 and the 6th support arm 702 cooperate to the formation of mandril 7
Limit makes 7 conventional sense of mandril, when breaker is "on" position, is formed and is used between the 5th support arm 803 and the 6th support arm 702
In the space of tripping movement.
As shown in figure 8, breaker is gate-dividing state, contact supporting withstands return unit 8, and return unit 8 withstands mandril 7, tripping
Revolving part 6 forms a fastening with mandril 7 under the effect of third return springs 11.
As shown in figure 9, handle rotates, the state just closed a floodgate in closing a floodgate is gone to by separating brake, return unit 8 loses moving contact rack
4 position-limiting action rotates counterclockwise, and mandril 7 moves right under the action of the first driving elastic component, due to third Flexible Reset
The effect of part 11, mandril 7 and tripping revolving part 6 keep fastening, and have between the 6th support arm 702 of mandril 7 and the 5th support arm 803
One space moves to right tripping for mandril, there is the gap of about 2 ~ 3mm between 7 right side of mandril and lock 13, as shown in Figure 10, handle after
Continuous rotation is completed to close a floodgate, and has the about gap 1mm or so between 7 right side of mandril and lock 13 at this time.
As shown in figure 11, when electric leakage movement occurs in breaker, the first drive rod of promotion to the right 501 of magnetictrip 5 makes
Tripping revolving part 6 overcomes the active force of third return springs 11 to rotate counterclockwise, and mandril 7 loses the support of tripping revolving part 6
Effect quickly moves to right under the impetus of the first driving elastic component, pushes lock 13, so that lock 13 and tripping 14 is threaded off, break
Road device quick acting switching-off, movable contact block 4 resets counterclockwise therewith, while reset, drives return unit 8 to rotate clockwise, return unit 8
Mandril 7 is pushed to reset mandril 7, the first drive rod 501 of magnetictrip 5 loses electromagnetic propulsion power, and tripping revolving part 6 is the
It is resetted under the action of three return springs 11.
By the variation of lever and each elasticity and elastic force the no-load voltage ratio of different power may be implemented, between each other in above structure
It respectively can independently calculate, be influenced without the other parameters by breaker itself.
As shown in Fig. 2, there is a spring leaf 703 in 7 left end of mandril, spring leaf 703 resists the second drive rod of magnetictrip 5
502, play booster action.
As shown in Figure 2, Figure 4 shows, the housing unit 1 is equipped with mandril limiting slot 102, and mandril 7 is limited in mandril limiting slot
In 102.Position-limiting action is formed to mandril 7, prevents 7 over-travel of mandril.
As shown in figure 4, the housing unit 1 be equipped with return unit limiting section 101, when breaker be "on" position, it is described
Return unit limiting section 101 resists return unit 8 and forms position-limiting action.
As shown in figure 4, the 6th support arm 702 of mandril 7 be it is U-shaped, tool is located at the 5th support arm 803 there are two branch
Upper and lower two sides make to keep matching relationship between the 6th support arm 702 and the 5th support arm 803.
As shown in figure 5, the third return springs 11 are torsional spring, tripping revolving part 6 is equipped with the first spring retainer groove
604, one end of the third return springs 11 is limited in the first spring retainer groove 604.
As shown in fig. 6, described first drives elastic component 10 for torsional spring, along straight-line displacement under 7 trip action of mandril
Rear end is equipped with the second spring limiting section 704 of L-type, and the second spring limiting section 704 is that the cutting of 7 ontology of mandril is stamped and formed out,
One end of first driving elastic component 10 abuts second spring limiting section 704.
As shown in fig. 7, the second driving elastic component 9 is torsional spring, the return unit 8 is equipped with third spring retainer portion
804, third spring retainer portion 804 is that the cutting of 8 ontology of return unit is stamped and formed out, and one end of the second driving elastic component 9 abuts third
Spring retainer portion 804.
The above disclosure is only the preferred embodiments of the present invention, cannot limit the right model of the present invention with this certainly
It encloses, therefore equivalent changes made in accordance with the claims of the present invention, is still within the scope of the present invention.
Claims (8)
1. earth leakage circuit breaker, including housing unit, housing unit is interior to be equipped with contact assembly, trip assembley therefor, handle, transmission group
Part, the contact assembly include that static contact, moving contact and the moving contact rack with moving contact linkage, the transmission component include
Lock, tripping, handle is "on" position, and the lock and tripping fasten, and handle is gate-dividing state, and the lock and tripping are de-
Button, it is characterised in that: the trip assembley therefor includes:
Magnetictrip, the relatively described housing unit fixed setting, is equipped with the first drive rod；
Mandril, be limited in housing unit and the relatively described housing unit can straight-line displacement, between the mandril and housing unit
Equipped with the first driving elastic component, the first driving elastic component is to the relatively described housing unit straight-line displacement forwards of the mandril
Thrust, the front of the relatively described housing unit straight-line displacement of mandril is arranged in the transmission component；
Tripping revolving part, being articulated in housing unit the relatively described housing unit can be rotated, the tripping revolving part and shell group
Third return springs are equipped between part, the tripping revolving part and the transmission of the first drive rod cooperate, in normal state, tripping
Revolving part forms fastening to mandril and acts on, under "on" position, when the first drive rod pushes away under the action of third return springs
Out, it pushes tripping revolving part that the effect of third return springs is overcome to rotate, releases and the fastening of mandril is acted on, the mandril pushes away
Dynamic lock makes lock and tripping tripping.
2. the earth leakage circuit breaker according to claim, it is characterised in that: tripping revolving part includes for hinged the
One articulated section and the first support arm and second support arm being connected on the first articulated section, the first support arm are located at the first drive rod
Launch direction side, third return springs form the active force for making first support arm push the first drive rod to tripping revolving part,
One end of mandril is equipped with third support arm, and when magnetictrip does not act, second support arm is arranged in front of third support arm, right
Mandril position-limiting action, when magnetictrip acts, the first drive rod is released, and tripping revolving part rotation is released to mandril
Position-limiting action.
3. the earth leakage circuit breaker according to claim, it is characterised in that: the trip assembley therefor further includes return unit, hinge
Being connected in housing unit the relatively described housing unit can be rotated, and the second driving elasticity is equipped between the return unit and housing unit
The front of the relatively described housing unit straight-line displacement of mandril is arranged in part, the return unit；It is described dynamic when handle is open position
Contact supporting resists return unit and forms constraint to it, and the return unit resists mandril and forms position-limiting action to the mandril, works as hand
Handle is closing position, and the moving contact rack releases the constraint to return unit, work of the return unit in the second driving elastic component
With lower rotation, the position-limiting action to mandril is released.
4. the earth leakage circuit breaker according to claim, it is characterised in that: the return unit include the second articulated section with
And it is connected to the 4th support arm and the 5th support arm on the second articulated section, mandril is equipped with the 6th support arm, and the 5th support arm is located at
The right of 6th support arm, when breaker is gate-dividing state, the 5th support arm and the 6th support arm cooperate to form mandril and limit,
The space for movement of threading off is formed when breaker is "on" position, between the 5th support arm and the 6th support arm.
5. the earth leakage circuit breaker according to claim, it is characterised in that: the mandril close to magnetictrip one
End is equipped with spring leaf, and the magnetictrip is equipped with the second drive rod, and the spring leaf abuts the second drive rod.
6. the earth leakage circuit breaker according to claim, it is characterised in that: the housing unit is limited equipped with mandril
Sliding slot, mandril are limited in mandril limit sliding chutes.
7. the earth leakage circuit breaker according to claim, it is characterised in that: the housing unit is limited equipped with return unit
Position portion, when breaker is "on" position, the return unit limiting section resists return unit and forms position-limiting action.
8. the earth leakage circuit breaker according to claim, it is characterised in that: the 6th support arm of the mandril is U-shaped, tool
There are two branches, and Liang Ge branch is located at the two sides up and down of the 5th support arm, makes to keep between the 6th support arm and the 5th support arm
Matching relationship.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910722537.1A CN110491748B (en) | 2019-08-06 | 2019-08-06 | Leakage protection circuit breaker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910722537.1A CN110491748B (en) | 2019-08-06 | 2019-08-06 | Leakage protection circuit breaker |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110491748A true CN110491748A (en) | 2019-11-22 |
| CN110491748B CN110491748B (en) | 2024-02-13 |
Family
ID=68549580
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910722537.1A Active CN110491748B (en) | 2019-08-06 | 2019-08-06 | Leakage protection circuit breaker |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110491748B (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110993427A (en) * | 2019-11-28 | 2020-04-10 | 新机电器有限公司 | Operation interlocking device of vacuum circuit breaker |
| CN114695029A (en) * | 2022-03-15 | 2022-07-01 | 宁波公牛低压电气有限公司 | Circuit breaker |
| CN117810041A (en) * | 2024-02-04 | 2024-04-02 | 美高电气科技有限公司 | Electromagnetic multipole circuit breaker with leakage protection function |
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| DE4424332A1 (en) * | 1994-07-11 | 1996-01-18 | Kopp Heinrich Ag | Line protection switch |
| CN105575740A (en) * | 2016-03-14 | 2016-05-11 | 乐清市沃斯托电气有限公司 | Circuit breaker |
| CN109585232A (en) * | 2018-11-16 | 2019-04-05 | 公牛集团股份有限公司 | A kind of residual current action breaker |
| CN210628226U (en) * | 2019-08-06 | 2020-05-26 | 乐清市贝加尔电子科技有限公司 | Leakage protection circuit breaker |
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2019
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|---|---|---|---|---|
| DE4424332A1 (en) * | 1994-07-11 | 1996-01-18 | Kopp Heinrich Ag | Line protection switch |
| CN105575740A (en) * | 2016-03-14 | 2016-05-11 | 乐清市沃斯托电气有限公司 | Circuit breaker |
| CN109585232A (en) * | 2018-11-16 | 2019-04-05 | 公牛集团股份有限公司 | A kind of residual current action breaker |
| CN210628226U (en) * | 2019-08-06 | 2020-05-26 | 乐清市贝加尔电子科技有限公司 | Leakage protection circuit breaker |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110993427A (en) * | 2019-11-28 | 2020-04-10 | 新机电器有限公司 | Operation interlocking device of vacuum circuit breaker |
| CN114695029A (en) * | 2022-03-15 | 2022-07-01 | 宁波公牛低压电气有限公司 | Circuit breaker |
| CN117810041A (en) * | 2024-02-04 | 2024-04-02 | 美高电气科技有限公司 | Electromagnetic multipole circuit breaker with leakage protection function |
Also Published As
| Publication number | Publication date |
|---|---|
| CN110491748B (en) | 2024-02-13 |
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