CN207558725U - A kind of operating mechanism of miniature circuit breaker - Google Patents
A kind of operating mechanism of miniature circuit breaker Download PDFInfo
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- CN207558725U CN207558725U CN201721864498.1U CN201721864498U CN207558725U CN 207558725 U CN207558725 U CN 207558725U CN 201721864498 U CN201721864498 U CN 201721864498U CN 207558725 U CN207558725 U CN 207558725U
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Abstract
A kind of operating mechanism of miniature circuit breaker provided by the utility model, including：Housing is installed with central shaft thereon；Control mechanism；Sleeve is sheathed on the central shaft；Contact supporting is rotatably arranged on the sleeve, and the contact supporting is equipped with moving contact；First bias piece is arranged between the contact supporting and the housing；Tripping mechanism is rotatably arranged on the sleeve, and integrally formed fastener is fastened with the contact supporting；During combined floodgate, the tripping mechanism drives the stylus holder pivots to the moving contact to be contacted with static contact under the driving of the control mechanism；During separating brake, the tripping mechanism is threaded off under the driving of the control mechanism, and the contact supporting is under the partial pressure of first bias piece, it turns to around the sleeve and is detached with the static contact, due to the setting of sleeve, central shaft will not be rotated with sleeve, and Interruption is stablized.
Description
Technical field
The utility model is related to electric system low voltage electrical apparatus technology fields, and in particular to a kind of operation machine of miniature circuit breaker
Structure.
Background technology
Miniature circuit breaker refers to the protection electric appliance mounted on terminal power distribution circuit, is mainly used for the mistake of circuit and electrical equipment
Load and open circuit protection.Suitable for exchanging 50/60Hz, rated voltage is no more than 400V, and rated current is no more than the occasion of 125A.
Miniature circuit breaker is generally made of the part such as electromagnetic tripping system, thermal tripping system, arc quenching system, operating mechanism,
And operating mechanism refers to the component for dividing, closing breaker, operating mechanism should ensure that breaker is reliably closed, also ensure to break
Road device is nonserviceabled lower quick acting switching-off, and the performance of operating mechanism directly affects the function of miniature circuit breaker.
Chinese patent literature CN104167333A discloses a kind of miniature circuit breaker, including shell, contact support, moves and touches
Head, lock and tripping, the lock are matched with tripping, and the contact is supported to be equipped with the first positioning for being separated by certain interval
The outside of plate and the second positioning plate, first positioning plate and the second positioning plate is equipped with bulge loop, and the contact is supported to be equipped with double
Torsional spring, the torsion spring include the first torsional spring and the second torsional spring, and first torsional spring and the second torsional spring are symmetrically distributed in moving contact
Both sides, first torsional spring and the second torsional spring be sheathed on respectively on the bulge loop of each positioning plate, one end of first torsional spring and
Clamping matching, the other end of first torsional spring and second torsional spring are supported with contact respectively in one end of second torsional spring
The other end be connected and with moving contact clamping matching, first positioning plate and the second positioning plate and bulge loop are equipped with fixation
Axis, the moving contact are located in gap and are articulated in fixing axle.
It is above-mentioned in the prior art：
(1) torsion spring arm of force one end is fixed on moving contact, and the other end is fixed on contact and supports that torsion spring central circular is consolidated
It is scheduled on contact to support, contact is passed through to support for fixing axle and moving contact, such contact are supported in rotation, fixing axle meeting and bulge loop
Inner circle generate friction, occur tight fit relationship, and fixing axle by contact support with the angle torsion of moving contact, make fixing axle
It is fixed and supports to rotate with contact, fixing axle can be caused to rotate in the location hole of shell, tripping force passes through during dropout
Fixing axle is applied on shell location hole, and the location hole on shell easy to wear influences trip speed, while will also result in location hole
Size increases, and will ultimately result in contact inclination or failure mechanisms；
(2) torsion spring central circular is fixed on two bulge loops of contact support, and installation is inconvenient；
(3) it since contact support, lock, the structure of tripping are complex, needs, using integrally formed structure, generally to adopt
With integrally formed mode, thus contact is supported, lock, tripping are plastic construction, with breaker rated operational current
Increase, the moving contact in mechanism is also required to increase therewith with static contact contact, and torsional spring power needs to increase several times, and contact is supported
Long-term to bear torsional spring power, plastic article fatigue strength is insufficient, and the service life is relatively low；Casting integrated molding mode, but this can also be used
Sample can cause complex process, cost higher；
(4) due to the limitation of structure, it is flexible coupling without enough space welding double joints and achievees the purpose that shunting, can only be applicable in
In the breaker of below rated current 63A.
Utility model content
Therefore, the technical problem to be solved by the present invention is to circuit breaker operation mechanism of the prior art is overcome to thread off
The defects of performance is unstable, so as to provide a kind of operating mechanism for the miniature circuit breaker that Interruption is stablized.
In order to solve the above technical problems, the utility model provides a kind of operating mechanism of miniature circuit breaker, including：
Housing is installed with central shaft thereon；
Control mechanism；
Sleeve is sheathed on the central shaft；
Contact supporting is rotatably arranged on the sleeve, and the contact supporting is equipped with moving contact；
First bias piece is arranged between the contact supporting and the housing；
Tripping mechanism is rotatably arranged on the sleeve, and integrally formed fastener is fastened with the contact supporting；It closes a floodgate
When, the tripping mechanism drives the stylus holder pivots to the moving contact and stationary contact under the driving of the control mechanism
Head contact；During separating brake, the tripping mechanism is threaded off under the driving of the control mechanism, and the contact supporting is inclined described first
Under the partial pressure of casting die, turn to around the sleeve and detached with the static contact.
The operating mechanism further includes the second bias piece being arranged between the contact supporting and the moving contact, described
The partial pressure of second bias piece makes the moving contact have contact in "on" position on the moving contact,
There is initial pressure during gate-dividing state.
Second bias piece is torsion spring, and the torsion spring is set on the sleeve, and the contact supporting includes two
With respect to side plate, the moving contact is rotatably connected between two side plates, and the interlude of the torsion spring is connected to described
On moving contact, the both ends of the torsion spring are against on two side plates.
The moving contact is equipped with card slot, and the interlude of the torsion spring is connected to described by being caught in the card slot
On moving contact.
Boss is arranged on two side plates, the both ends of the torsion spring are against respectively on two boss.
The sleeve is copper sheathing.
It is arranged on the inside of two side plates and clamps the moving contact, prevent the moving contact along sleeve axial direction
The clamping structure of play.
For the moving contact with the contact supporting by rivet interlacement, the rivet uses brass.
The moving contact is equipped with the first limiting slot, and the copper sheathing passes through first limiting slot, the moving contact is turned
Dynamic angle limit.
First limiting slot is U-type groove.
Cantilever arm is arranged on two side plates, axis pin, first bias piece are connected between two cantilever arms
One end be connected to the middle of the axis pin, the other end connects on the housing.
The position limiting structure that axial limiting is carried out to the axis pin is additionally provided on the contact supporting.
One end of the axis pin is equipped with limited block, and the position limiting structure is the limit convex being arranged on the contact supporting
Platform, has the second limiting slot on the positive stop lug boss, and the limited block is limited in second limiting slot.
Two sides of the moving contact are equipped with the connecting pin being connect with flexible connection.
The tripping mechanism includes
Tripping is hinged by tripping axis and the contact supporting；
Lock, is hinged by the sleeve and the contact supporting, and is fastened with the tripping；
Latch return unit, be arranged on it is described lock the contact supporting between, partial pressure on the lock,
Described latch in is made to release to being resetted rapidly after the locking of the tripping；
The control mechanism includes the operation handle being rotatably arranged on the housing, and the operation handle rotation can
The tripping is driven to rotate；
The control mechanism controls the automatically controlled release mechanism that the lock is threaded off with the tripping when further including fault.
The lock return unit is lock torsion spring, is located on the outside of the sleeve on the lock and is equipped with cylinder boss, described
On the outside of the cylinder boss, the first end of the torsional spring is against in the card slot of the lock center of lock torsion spring, and second
End is against on the card slot of the contact supporting.
The operation handle is connect with the tripping by U-shaped tether, and the operation handle is equipped with eccentric location hole, is closing
Lock state, the bias location hole, the tie point of the U-shaped bolt and the tripping and the tripping axis on the same line,
The operation handle is locked at "on" position.
Technical solutions of the utility model have the following advantages that：
1. a kind of operating mechanism of miniature circuit breaker provided by the utility model, by the way that sleeve is sheathed on central shaft,
Sleeve can flexible rotating on center shaft, in separating brake, tripping mechanism is threaded off under the driving of control mechanism, and contact supporting exists
It under the partial pressure of first bias piece, turns to around the sleeve and is detached with static contact, due to the setting of sleeve, central shaft is not
It can be rotated with sleeve, central shaft and the location hole on housing will not be worn, Interruption is stablized.
2. a kind of operating mechanism of miniature circuit breaker provided by the utility model, the operating mechanism, which further includes, is arranged on institute
The second bias piece between contact supporting and the moving contact is stated, the partial pressure of second bias piece is in the moving contact
On, make the moving contact that there is contact in "on" position, there is initial pressure in gate-dividing state, ensured combined floodgate and divided
The reliability of lock.
3. a kind of operating mechanism of miniature circuit breaker provided by the utility model, second bias piece is torsion spring, institute
It states torsion spring to be set on the sleeve, the contact supporting includes two opposite sides plate, and the moving contact is rotatably connected to
Between two side plates, the interlude of the torsion spring is connected on the moving contact, and the both ends of the torsion spring are against two institutes
It states on side plate, the stress balance when setting of torsion spring makes the operating mechanism separating brake, closes a floodgate, combined floodgate, separating brake are reliable and stable, and pacify
Dress is convenient.
4. a kind of operating mechanism of miniature circuit breaker provided by the utility model, the moving contact is equipped with card slot, described
The interlude of torsion spring is connected on the moving contact by being caught in the card slot, makes the stress balance of moving contact, close a floodgate,
Separating brake is reliable and stable.
5. a kind of operating mechanism of miniature circuit breaker provided by the utility model, the sleeve is copper sheathing, and copper has fine
Self-lubricating property, can reduce rotation friction, increase dropout opening velocity during error protection.
6. a kind of operating mechanism of miniature circuit breaker provided by the utility model, be arranged on the inside of two side plates by
The moving contact clamps, and prevents clamping structure of the moving contact along the sleeve axial float, and setting in this way avoids dynamic touch
The problems such as head horizontal looseness, angle tilt, make combined floodgate, separating brake more reliable and more stable.
7. a kind of operating mechanism of miniature circuit breaker provided by the utility model, the moving contact lead to the contact supporting
Rivet interlacement is crossed, the rivet uses brass, increases grinding performance during moving contact rotation, while increase the riveting of rivet
Plasticity.
8. a kind of operating mechanism of miniature circuit breaker provided by the utility model, the moving contact is equipped with the first limiting slot,
The copper sheathing passes through first limiting slot, and the rotational angle of the moving contact is limited, the rotational angle of moving contact is controlled
In rational range.
9. a kind of operating mechanism of miniature circuit breaker provided by the utility model, stretching is arranged on two side plates
Arm is connected with axis pin between two cantilever arms, and one end of first bias piece is connected to the middle of the axis pin, another
On the housing, setting in this way makes contact supporting more be balanced by the biasing force of the first bias piece, will not occur partially for end connection
Turn, close a floodgate, separating brake is stablized.
10. a kind of operating mechanism of miniature circuit breaker provided by the utility model, it is additionally provided on the contact supporting to institute
The position limiting structure that axis pin carries out axial limiting is stated, prevents axis pin from causing to come off in axial play.
11. a kind of operating mechanism of miniature circuit breaker provided by the utility model, two sides of the moving contact are all provided with
There is the connecting pin being connect with flexible connection, the installation space of flexible connection is sufficient, the larger breaker of applicable rated current.
Description of the drawings
It, below will be right in order to illustrate more clearly of specific embodiment of the present invention or technical solution of the prior art
Specific embodiment or attached drawing needed to be used in the description of the prior art are briefly described, it should be apparent that, it is described below
In attached drawing be the utility model some embodiments, for those of ordinary skill in the art, do not paying creativeness
Under the premise of labour, other attached drawings are can also be obtained according to these attached drawings.
Fig. 1 is the structure diagram of the operating mechanism of a kind of miniature circuit breaker provided in the embodiment of the utility model；
Fig. 2 is a kind of side view of the operating mechanism of miniature circuit breaker shown in FIG. 1；
Fig. 3 is the structure diagram that a kind of operating mechanism of miniature circuit breaker shown in FIG. 1 is in gate-dividing state；
Fig. 4 is the structure diagram that a kind of operating mechanism of miniature circuit breaker shown in FIG. 1 is in "on" position；
Fig. 5 is a kind of structure diagram of the contact supporting of the operating mechanism of miniature circuit breaker shown in FIG. 1；
Fig. 6 is a kind of structure diagram of the moving contact of the operating mechanism of miniature circuit breaker shown in FIG. 1；
Fig. 7 is connected for a kind of moving contact of the operating mechanism of miniature circuit breaker shown in FIG. 1 with contact supporting by torsion spring
The structure diagram connect.
Reference sign：
1- operation handles；2-U type bolts；3- trippings；
4- tripping axis；5- is latched；6- lock torsion springs；
7- moving contacts；8- rivets；9- copper sheathings；
10- torsion springs；11- tension springs；12- axis pins；
13- contact supportings；14- central shafts；15- flexible connections；
131- boss；132- clamping structures；133- cantilever arms；
The second limiting slots of 134-；71- card slots；72-U type grooves.
Specific embodiment
The technical solution of the utility model is clearly and completely described below in conjunction with attached drawing, it is clear that described
Embodiment is the utility model part of the embodiment, instead of all the embodiments.Based on the embodiment in the utility model, sheet
Field those of ordinary skill all other embodiments obtained without making creative work, belong to this practicality
Novel protected range.
In the description of the present invention, it should be noted that term " " center ", " on ", " under ", it is "left", "right", " perpendicular
Directly ", the orientation of the instructions such as " level ", " interior ", " outer " or position relationship are based on orientation shown in the drawings or position relationship, are only
The utility model must have specific with the device or element for simplifying description rather than instruction or hint meaning for ease of description
Orientation, with specific azimuth configuration and operation, therefore it is not intended that limitation to the utility model.In addition, term " the
One ", " second ", " third " are only used for description purpose, and it is not intended that instruction or hint relative importance.
In the description of the present invention, it should be noted that unless otherwise clearly defined and limited, term " is pacified
Dress ", " connected ", " connection " should be interpreted broadly, for example, it may be being fixedly connected or being detachably connected or integrally
Connection；Can be mechanical connection or electrical connection；It can be directly connected, can also be indirectly connected by intermediary,
It can be the connection inside two elements.For the ordinary skill in the art, can above-mentioned art be understood with concrete condition
Concrete meaning of the language in the utility model.
In addition, as long as technical characteristic involved in the utility model different embodiments disclosed below is each other
Not forming conflict can be combined with each other.
Embodiment 1
It is as shown in figures 1 to 6 a kind of a kind of specific embodiment of the operating mechanism of miniature circuit breaker, including housing, control
Mechanism, sleeve, contact supporting 13, the first bias piece, the second bias piece, tripping mechanism.
Central shaft 14 is fixed on the housing, the sleeve is sheathed on the central shaft 14, the contact supporting
13 are rotatably arranged on the sleeve, and the contact supporting 13 is equipped with moving contact 7, and first bias piece is arranged on institute
It states between contact supporting 13 and the housing, the tripping mechanism is rotatably arranged on the sleeve, with the contact branch
Frame 13 fastens integrally formed fastener；During combined floodgate, the tripping mechanism drives the contact branch under the driving of the control mechanism
Frame 13 turns to the moving contact 7 and is contacted with static contact；During separating brake, the tripping mechanism takes off under the driving of the control mechanism
Button, the contact supporting 13 turn to and the static contact under the partial pressure of first bias piece around the sleeve
Separation, due to the setting of sleeve, sleeve flexible rotating, central shaft 14 will not can be rotated with sleeve on a central shaft 14, be threaded off
Performance is stablized.
The tripping mechanism includes tripping 3, lock 5, lock return unit, and the tripping 3 passes through 3 axis of tripping and the contact
Stent 13 is hinged, and the lock 5 is hinged by the sleeve and the contact supporting 13, and is fastened with the tripping 3, the lock
Button return unit is lock torsion spring 6, is located on the outside of the sleeve on the lock 5 and is equipped with cylinder boss, in the lock torsion spring 6
The heart is sleeved on the outside of the cylinder boss, and the first end of the lock torsion spring 6 is against in the card slot of the lock 5, and second end is against
On the card slot of the contact supporting 13, the partial pressure of the lock torsion spring 6 is solving the lock 5 on the lock 5
Except being resetted rapidly after the locking to the tripping 3.
The control mechanism includes operation handle 1, automatically controlled release mechanism, and the operation handle 1 is rotatably arranged in institute
It states on housing, is connect with the tripping 3 by U-shaped bolt 2, the operation handle 1 is equipped with eccentric location hole, in "on" position,
The bias location hole, the tie point of the U-shaped bolt 2 and the tripping 3 and the tripping axis 4 on the same line, by institute
It states operation handle 1 and is locked at "on" position；The automatically controlled release mechanism controls the lock 5 and the tripping in fault
3 thread off.
Second bias piece is arranged between the contact supporting 13 and the moving contact 7, second bias piece
Partial pressure makes the moving contact 7 have contact in "on" position, in gate-dividing state on the moving contact 7
With initial pressure, in the present embodiment, as shown in Figure 1, second bias piece is torsion spring 10, the torsion spring 10 is arranged
On the sleeve, the contact supporting 13 includes two opposite sides plate, and the moving contact 7 is rotatably connected to two side plates
Between, the moving contact 7 is equipped with card slot 71, and the interlude of the torsion spring 10 is connected to institute by being caught in the card slot 71
It states on moving contact 7, boss 131 is arranged on two side plates, the both ends of the torsion spring 10 are against two boss respectively
On 131, the setting of torsion spring 10 makes the stress balance of moving contact 7；To avoid the moving contact 7 in the contact supporting 13
The problems such as horizontal looseness, angle tilt, clamps the moving contact 7 as shown in figure 5, being arranged on the inside of two side plates,
Prevent clamping structure 132 of the moving contact 7 along the sleeve axial float；Cantilever arm 133 is arranged on two side plates,
Axis pin 12 is connected between two cantilever arms 133, first bias piece is tension spring 11, and one end of the tension spring 11 is connected to
The middle of the axis pin 12, the other end connect on the housing, and setting in this way bears the centre position of contact supporting 13
The pulling force of tension spring 11 will not deflect, and close a floodgate, separating brake is stablized；To prevent the axis pin 12 play in an axial direction, the axis pin 12
One end be equipped with limited block, the contact supporting 13 be equipped with to the axis pin 12 carry out axial limiting positive stop lug boss, it is described
There is the second limiting slot 134, the limited block is limited in second limiting slot 134 on positive stop lug boss.
As shown in fig. 6, the moving contact 7 is equipped with U-type groove 72, the copper sheathing 9 passes through the U-type groove 72, to described dynamic tactile
First 7 rotational angle limiting, can control the rotational angle of moving contact 7 in rational range.
In the present embodiment, the sleeve is copper sheathing 9, and copper has good self-lubricating property, can reduce rotation and rub
Power is wiped, increases dropout opening velocity during error protection；The moving contact 7 is connect with the contact supporting 13 by rivet 8, institute
Rivet 8 is stated using brass, specifically using H62Y, increases grinding performance when moving contact 7 rotates, while increase rivet 8
Rivet plasticity.
Two sides of the moving contact 7 are equipped with the connecting pin being connect with flexible connection 15, the connection space of flexible connection 15
Abundance, solderable double joint flexible connection 15 achieve the purpose that shunting, the larger breaker of applicable rated current.
Copper sheathing 9 is first passed through a mounting hole of contact supporting 13 by copper sheathing 9 when being installed on contact supporting 13, will be double
Torsional spring 10 is sleeved on copper sheathing 9, continues another mounting hole that copper sheathing 9 is made to pass through contact supporting 13, after 9 position of copper sheathing is adjusted,
The interlude of torsion spring 10 is made to be caught in the card slot 71 of moving contact 7, the both ends of torsion spring 10 are against the boss 131 on both side plate
On, it is easy for installation.
When needing to close a floodgate, operation handle 1 is pushed manually, and the rotation of operation handle 1 drives tripping 3 around central shaft by U-shaped bolt 2
14 rotations latch 5 be in the lock state with tripping 3 at this time, and tripping 3 is by tripping axis 4 with 7 stent of moving contact around 14 turns of central shaft
Dynamic, the moving contact 7 being connected on contact supporting 13 turns to position contact with static contact, completion of closing a floodgate, during "on" position, partially
Heart location hole, U-shaped bolt 2 and tie point, the tripping axis 4 of tripping 3 are located along the same line, and operation handle 1 is locked at combined floodgate shape
State.When electric current is excessive in circuit, automatically controlled release mechanism can generate an electromagnetic force and push rod is driven to push lock 5 around central shaft 14
Rotation releases lock 5 and the locking relation of tripping 3, and tension spring 11 pulls axis pin 12, and contact supporting 13 is by the active force of tension spring 11
Thrust is generated, tripping 3 is made to be rotated up around 4 center of tripping axis, and U-shaped bolt 2 and the connecting pin of tripping 3 is driven to rotate up fortune
Dynamic, U-shaped bolt 2 unlocks, and contact supporting 13 is rotated by the active force of tension spring 11, and moving contact 7 is driven to leave static contact, 7 turns of moving contact
It moves to open position, while operation handle 1 turns to open position, link U-shaped bolt 2, and the U-shaped linkage of bolt 2 tripping 3, tripping 3 is by U
2 pulling force effect of type bolt is rotated along 4 center of tripping axis, 5 locked positions of lock is turned to again, in the active force of lock torsion spring 6
Under, lock 5 locks tripping 3 again.
In the above embodiment, the limiting slot of other shapes may be used in the U-type groove 72 of moving contact 7, as long as can be touched to dynamic
First 7 rotational angle is limited.
Obviously, the above embodiments are merely examples for clarifying the description, and is not intended to limit the embodiments.It is right
For those of ordinary skill in the art, can also make on the basis of the above description it is other it is various forms of variation or
It changes.There is no necessity and possibility to exhaust all the enbodiments.And the obvious variation thus extended out or
Among the protection domain that variation is created still in the utility model.
Claims (17)
1. a kind of operating mechanism of miniature circuit breaker, which is characterized in that including：
Housing is installed with central shaft thereon；
Control mechanism；
Sleeve is sheathed on the central shaft；
Contact supporting is rotatably arranged on the sleeve, and the contact supporting is equipped with moving contact；
First bias piece is arranged between the contact supporting and the housing；
Tripping mechanism is rotatably arranged on the sleeve, and integrally formed fastener is fastened with the contact supporting；During combined floodgate,
The tripping mechanism drives the stylus holder pivots to be connect to the moving contact with static contact under the driving of the control mechanism
It touches；During separating brake, the tripping mechanism is threaded off under the driving of the control mechanism, and the contact supporting is in first bias piece
Partial pressure under, turn to around the sleeve and detached with the static contact.
2. a kind of operating mechanism of miniature circuit breaker according to claim 1, which is characterized in that
The operating mechanism further includes the second bias piece being arranged between the contact supporting and the moving contact, and described second
The partial pressure of bias piece makes the moving contact have contact in "on" position, in separating brake on the moving contact
There is initial pressure during state.
3. the operating mechanism of a kind of miniature circuit breaker according to claim 2, which is characterized in that second bias piece is
Torsion spring, the torsion spring are set on the sleeve, and the contact supporting includes two opposite sides plate, and the moving contact is rotatable
Ground is connected between two side plates, and the interlude of the torsion spring is connected on the moving contact, the both ends of the torsion spring
It is against on two side plates.
4. the operating mechanism of a kind of miniature circuit breaker according to claim 3, which is characterized in that the moving contact is equipped with
Card slot, the interlude of the torsion spring are connected to by being caught in the card slot on the moving contact.
5. the operating mechanism of a kind of miniature circuit breaker according to claim 3, which is characterized in that symmetrical on two side plates
Equipped with boss, the both ends of the torsion spring are against respectively on two boss.
6. the operating mechanism of a kind of miniature circuit breaker according to claim 1, which is characterized in that the sleeve is copper sheathing.
A kind of 7. operating mechanism of miniature circuit breaker according to claim 3, which is characterized in that the inside of two side plates
It is arranged with and clamps the moving contact, prevent clamping structure of the moving contact along the sleeve axial float.
8. a kind of operating mechanism of miniature circuit breaker according to claim 1, which is characterized in that the moving contact with it is described
Contact supporting uses brass by rivet interlacement, the rivet.
9. the operating mechanism of a kind of miniature circuit breaker according to claim 6, which is characterized in that the moving contact is equipped with the
One limiting slot, the copper sheathing pass through first limiting slot, and the rotational angle of the moving contact is limited.
A kind of 10. operating mechanism of miniature circuit breaker according to claim 9, which is characterized in that first limiting slot
For U-type groove.
11. the operating mechanism of a kind of miniature circuit breaker according to claim 3, which is characterized in that right on two side plates
Claim to be equipped with cantilever arm, be connected with axis pin between two cantilever arms, one end of first bias piece is connected to the axis pin
Middle, the other end connect on the housing.
12. the operating mechanism of a kind of miniature circuit breaker according to claim 11, which is characterized in that on the contact supporting
It is additionally provided with the position limiting structure that axial limiting is carried out to the axis pin.
A kind of 13. operating mechanism of miniature circuit breaker according to claim 12, which is characterized in that one end of the axis pin
Equipped with limited block, the position limiting structure is the positive stop lug boss being arranged on the contact supporting, has the on the positive stop lug boss
Two limiting slots, the limited block are limited in second limiting slot.
14. the operating mechanism of a kind of miniature circuit breaker according to any one of claim 1-13, which is characterized in that described
Two sides of moving contact are equipped with the connecting pin being connect with flexible connection.
15. a kind of operating mechanism of miniature circuit breaker according to claim 1, which is characterized in that
The tripping mechanism includes
Tripping is hinged by tripping axis and the contact supporting；
Lock, is hinged by the sleeve and the contact supporting, and is fastened with the tripping；
Return unit is latched, is arranged between the lock and the contact supporting, partial pressure makes institute on the lock
It states and latches in releasing to being resetted rapidly after the locking of the tripping；
The control mechanism includes the operation handle being rotatably arranged on the housing, and the operation handle rotation can drive
The tripping rotation；
The control mechanism controls the automatically controlled release mechanism that the lock is threaded off with the tripping when further including fault.
16. a kind of operating mechanism of miniature circuit breaker according to claim 15, which is characterized in that
The lock return unit is lock torsion spring, is located on the outside of the sleeve on the lock and is equipped with cylinder boss, the lock
On the outside of the cylinder boss, the first end of the lock torsion spring is against in the card slot of the lock center of torsional spring, and second
End is against on the card slot of the contact supporting.
17. a kind of operating mechanism of miniature circuit breaker according to claim 15, which is characterized in that the operation handle with
The tripping is connect by U-shaped tether, and the operation handle is equipped with eccentric location hole, in "on" position, the bias location hole,
The operation handle on the same line, is locked at conjunction by the tie point and the tripping axis of the U-shaped bolt and the tripping
Lock state.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721864498.1U CN207558725U (en) | 2017-12-27 | 2017-12-27 | A kind of operating mechanism of miniature circuit breaker |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721864498.1U CN207558725U (en) | 2017-12-27 | 2017-12-27 | A kind of operating mechanism of miniature circuit breaker |
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| CN207558725U true CN207558725U (en) | 2018-06-29 |
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| CN201721864498.1U Active CN207558725U (en) | 2017-12-27 | 2017-12-27 | A kind of operating mechanism of miniature circuit breaker |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107887236A (en) * | 2017-12-27 | 2018-04-06 | 合兴集团有限公司 | A kind of operating mechanism of miniature circuit breaker |
| CN109686625A (en) * | 2018-12-28 | 2019-04-26 | 浙江正泰电器股份有限公司 | Miniature circuit breaker |
| CN109935494A (en) * | 2019-03-01 | 2019-06-25 | 宏秀电气有限公司 | A kind of isolation axis transmission structure and outdoor high voltage circuit breaker |
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