CN109712830A - Automatic change-over - Google Patents
Automatic change-over Download PDFInfo
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- CN109712830A CN109712830A CN201711006243.6A CN201711006243A CN109712830A CN 109712830 A CN109712830 A CN 109712830A CN 201711006243 A CN201711006243 A CN 201711006243A CN 109712830 A CN109712830 A CN 109712830A
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- moving contact
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- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims abstract description 123
- 230000003068 static effect Effects 0.000 claims abstract description 51
- 238000004146 energy storage Methods 0.000 claims abstract description 8
- 230000009471 action Effects 0.000 claims description 12
- 229910052742 iron Inorganic materials 0.000 claims description 4
- 150000002505 iron Chemical class 0.000 claims description 3
- 230000007246 mechanism Effects 0.000 abstract description 17
- 238000010586 diagram Methods 0.000 description 19
- 230000000694 effects Effects 0.000 description 7
- 238000000034 method Methods 0.000 description 7
- 230000008569 process Effects 0.000 description 5
- 238000009434 installation Methods 0.000 description 4
- 238000006243 chemical reaction Methods 0.000 description 3
- ZZUFCTLCJUWOSV-UHFFFAOYSA-N furosemide Chemical compound C1=C(Cl)C(S(=O)(=O)N)=CC(C(O)=O)=C1NCC1=CC=CO1 ZZUFCTLCJUWOSV-UHFFFAOYSA-N 0.000 description 2
- 230000007306 turnover Effects 0.000 description 2
- 230000009977 dual effect Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 230000005672 electromagnetic field Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000000696 magnetic material Substances 0.000 description 1
- 230000005389 magnetism Effects 0.000 description 1
- 230000032258 transport Effects 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
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Abstract
A kind of automatic change-over, including electromagnet system, contact system and push and pull system；Electromagnet system includes coil, dynamic iron core, static iron core and spring；Contact system includes the drive rod that the first, second static contact, moving contact and driving moving contact act between the first, second position, is closed when moving contact is located at first position with the first static contact, is closed when moving contact is located at the second position with the second static contact；When coil is powered, dynamic iron core act to static iron core position and makes spring energy-storage, drives drive rod, and driving moving contact leaves first position, and when coil blackout, spring, which releases energy, drives drive rod, and moving contact is driven to act to the second position；Push and pull system includes connecting rod and attachment device, and attachment device includes sliding slot and articulated shaft, is connected between electromagnet system and connecting rod and/or by attachment device between drive rod and connecting rod.Improve operating mechanism Reliability of Microprocessor；Realize the control mode only powered off by time control line circle without microswitch.
Description
Technical field
The invention belongs to low voltage electrical apparatus technology fields, and in particular to a kind of automatic change-over.
Background technique
Automatic change-over (english abbreviation are as follows: ATSE) is main but is not absolutely use in emergency power supply system, is that will bear
It carries circuit and is automatically shifted to as usual with power supply (common power supply is also referred to as " external power supply power supply " or " mains supply ") from power supply all the way
The device for switching of another way power supply such as backup power source (backup power source such as self-generating power source), to ensure to the uninterrupted of important load
Continuous power supply, enables important load normal reliable to run.In view of this, since ATSE is more applied to important power supply place, because
And it is very harsh to the Reliability of Microprocessor of its automatic conversion.
As is known in the industry: automatic change-over is the actuation and release for being operated by it mechanism and utilizing electromagnet, and is utilized lazy
The inertia of (idle pulley is also referred to as " main shaft " < such as CN2842686Y >) is taken turns to realize the switching motion of contact system.Automatic change-over
Including electromagnet system, contact system and connect electromagnet system and contact system connecting rod, electromagnet system include coil,
Dynamic iron core, static iron core and the spring being arranged between dynamic and static iron core；Contact system include can first position and the second position it
Between the moving contact that acts and set up the first static contact and the second static contact in moving contact two sides separately, when moving contact is located at first position
When be closed with the first static contact, the first power supply is connected, and is closed when moving contact is located at the second position with the second static contact, and second is electric
Source is connected.When coil is powered, dynamic iron core is moved to sound iron core attracted position and compressed spring, makes spring energy-storage, dynamic iron core band
Dynamic connecting rod, connecting rod drive the drive rod of moving contact, separate moving contact with the first static contact, leave first position, when mechanism transports
When moving close to mechanism dead-centre position (connecting rod and drive rod in a straight line), drive rod touches microswitch, coil blackout, spring
Start reversely to apply dynamic iron core thrust, but moving contact (or increased idle pulley or increases on moving contact on drive rod at this time
The idle pulley added) rotation effect of inertia, the drive rod band of moving contact can cross to mechanism dead-centre position, and discharge and push by spring
Dynamic dynamic iron core realizes conversion of first power supply to second source so that moving contact be driven to act to the second position.
In the motion process of said mechanism, the power-off time of coil must be controlled accurately, if coil blackout is too early, idle pulley is also
There is no lead agency to cross dead-centre position, spring has discharged, and idle pulley is made not have enough energy to cross dead point, then moving contact will be to
First position direction is fallen after rise, and the switching from first position to the second position is unable to complete.If electromagnet powers off too late, idle pulley can quilt
Dynamic iron core drawing is parked on dead-centre position and loses inertia energy, is unable to drive mechanism and breaks through dead point.In aforesaid operations mechanism, by
Between connecting rod and dynamic iron core, between connecting rod and the drive rod of contact system all be articulated form, dynamic iron core, connecting rod, drive rod
Three mutually restrains always, when the coil blackout moment is arranged, it is necessary to consider spring, dynamic iron core to connecting rod and to drive rod
Active force, thus it is very high to the installation requirement of the microswitch of control coil on-off, action request.Exist in view of prior art
This respect is still not enough to reach the desired requirement of industry, and technical solution described below is to generate in this background
's.
Summary of the invention
Task of the invention lies in provide one kind both to facilitate to reduce to the microswitch for control coil power on/off
Installation requirement is conducive to ensure the automatic change-over of the reliability to dual power supply switching motion again.
The task of the present invention is in this way to complete, a kind of automatic change-over, including electromagnet system, contact system with
And the push and pull system of connection electromagnet system and contact system；Electromagnet system includes coil, dynamic iron core, static iron core and for making
The spring that dynamic iron core resets；Contact system includes the first static contact, the second static contact, moving contact and driving moving contact at first
The drive rod acted between the second position is set, is closed when moving contact is located at first position with the first static contact, moving contact is located at
It is closed when the second position with the second static contact；When coil is powered, dynamic iron core acts to static iron core position and makes spring energy-storage,
Drive rod is driven, so that moving contact be driven to leave first position, when coil blackout, spring, which releases energy, drives drive rod, thus
Driving moving contact is acted to the second position；The push and pull system includes connecting rod and attachment device, attachment device include sliding slot and
The articulated shaft acted in sliding slot passes through institute between the electromagnet system and connecting rod and/or between the drive rod and connecting rod
Attachment device connection is stated, so that both electromagnet system and connecting rod opposite sliding and can rotate, and/or, drive rod and connecting rod two
Person can be relative to sliding and rotation.
In one particular embodiment of the present invention, the sliding slot is provided on the connecting rod and is located at connecting rod and institute
State one end that electromagnet system is connected or to be provided in dynamic iron core along the dynamic iron core direction of action state, in which:
When the sliding slot is provided with the one end of the connecting rod being connected with the electromagnet system, then articulated shaft setting exists
In dynamic iron core；And when the sliding slot is provided in dynamic iron core with the state along dynamic iron core direction of action, then it is described hinged
The one end of the connecting rod being connected with the electromagnet system is arranged in axis.
In another specific embodiment of the invention, the sliding slot be provided on the connecting rod and be located at connecting rod with
One end or be provided on the drive rod that the drive rod is connected, in which: when the sliding slot is provided with the connecting rod
When the one end being connected with the drive rod, then the articulated shaft is arranged on the drive rod；And when the sliding slot is opened
When being located on the drive rod, then the articulated shaft is arranged on connecting rod and is located at one end that connecting rod is connected with drive rod.
In another specific embodiment of the invention, the moving contact be equipped with one along moving contact radial direction open up from
Elongated slot is locked, the drive rod is equipped with drive rod articulated shaft, which acts in self-locking elongated slot, when moving contact position
When the first position or the second position, the angle of self-locking elongated slot and drive rod is in 90 °.
In another specific embodiment of the invention, the electromagnet system further includes air gap cushion block, the air gap pad
Block is arranged between the dynamic and static iron core, and when the coil is powered, dynamic iron core is to the movement of static iron core position until quiet iron
Core, air gap cushion block and dynamic iron core three abut.
Of the invention there are one in specific embodiment, the air gap cushion block is fixed on static iron core or is fixed on
In the dynamic iron core.
Technical solution provided by the invention has the technical effect that by the way that attachment device, connecting rod are arranged in push and pull system
System includes connecting rod and attachment device, and attachment device includes sliding slot and the articulated shaft acted in sliding slot, electromagnet system and company
It is connected between bar or by attachment device between drive rod and connecting rod, so that both electromagnet system and connecting rod can be slided relatively
Dynamic and rotation, and/or, both drive rod and connecting rod can be relative to sliding and rotations.The articulated shaft of electromagnet system and connecting rod is set
It is set to slidably, or sets the articulated shaft of connecting rod and drive rod to slidably, so that switch operating mechanism is in coil blackout
Afterwards, when spring starts release, due to the idle stroke that articulated shaft moves in sliding slot, the effect of connecting rod and drive rod in rotary inertia
Under cross dead-centre position when, be no longer influenced by the active force of spring and dynamic iron core, mechanism enabled smoothly to cross dead-centre position, from
And the installation requirement and action request to microswitch are reduced, improve operating mechanism Reliability of Microprocessor.In addition, in sound iron
Air gap cushion block is set between core, realizes the control mode only powered off by time control line circle without microswitch.
Detailed description of the invention
Fig. 1 is 1 structural schematic diagram of automatic change-over embodiment of the application.
Fig. 2 is 2 schematic diagram of the embodiment of the present application.
Fig. 3 is 3 schematic diagram of the embodiment of the present application.
Fig. 4 is 4 schematic diagram of the embodiment of the present application.
Fig. 5 a is that the moving contact of embodiment 1 is in first position schematic diagram.
Fig. 5 b is schematic diagram after the coil of embodiment 1 is powered.
Fig. 5 c moves to dead-centre position schematic diagram for the dynamic iron core of embodiment 1, connecting rod, the first actuating arm of drive rod.
Fig. 5 d be embodiment 1 by dead point after, coil blackout, spring discharge schematic diagram.
Fig. 5 e is that the spring release of embodiment 1 pushes dynamic iron core, so that moving contact eventually arrives at second position schematic diagram.
Fig. 6 is 5 schematic diagram of the embodiment of the present application.
Fig. 7 is 6 schematic diagram of the embodiment of the present application.
Fig. 8 is 7 schematic diagram of the embodiment of the present application.
Fig. 9 a is that the moving contact of embodiment 5 is in first position schematic diagram.
Fig. 9 b is schematic diagram after the coil of embodiment 5 is powered.
Fig. 9 c moves to dead-centre position schematic diagram for the dynamic iron core of embodiment 5, connecting rod, the first actuating arm of drive rod.
Fig. 9 d crosses dead-centre position schematic diagram for the dynamic iron core of embodiment 1, connecting rod, the first actuating arm of drive rod.
Fig. 9 e be embodiment 1 by dead point after, coil blackout, spring discharge schematic diagram.
Fig. 9 f is that the spring release of embodiment 1 pushes dynamic iron core, so that moving contact eventually arrives at second position schematic diagram.
Figure 10 is the schematic diagram of embodiment 8.
Specific embodiment
Referring to Figure 1 to Fig. 4 and Fig. 5 a to 5e, a kind of automatic change-over, including electromagnet system 1, contact system 3
And the push and pull system of connection electromagnet system 1 and contact system 3；Electromagnet system 1 includes coil 11, dynamic iron core 12, quiet iron
Core 13 and for make dynamic iron core 12 reset spring 14；Contact system 3 includes the first static contact 33, the second static contact 34, dynamic touching
First 31 drive rods 32 acted between the first position and the second position with driving moving contact 31, when moving contact 31 is located at first
When setting, 33 contact closure of moving contact 31 and the first static contact, the first power supply is connected, and when moving contact 31 is located at the second position, is moved
34 contact closure of contact 31 and the second static contact, second source are connected；When coil 11 is powered, effect of the dynamic iron core 12 in electromagnetic field
The lower position to where static iron core 13 act and makes 14 energy storage of spring, drive drive rod 32, so that moving contact 31 be driven to leave the
One position, when coil 11 powers off, spring 14, which releases energy, drives drive rod 32, to drive the movement of moving contact 31 to second
It sets.
Since the concept of above-mentioned first position and the second position belongs to common knowledge and on the background technique column of the application
In have statement, therefore applicant repeats no more.
Technical essential as technical solution provided by the invention: push and pull system above-mentioned includes connecting rod 2 and attachment device
4, attachment device 4 includes sliding slot 41 and the articulated shaft 42 acted in sliding slot, between electromagnet system 1 and connecting rod 2 and/or drives
It is connected between bar 32 and connecting rod 2 by attachment device 4, so that both electromagnet system 1 and connecting rod 2 opposite can slide and turn
It is dynamic, and/or, both drive rod 32 and connecting rod 2 can be relative to sliding and rotations.
Embodiment 1:
Such as Fig. 1, attachment device 4 is arranged between connecting rod 2 and electromagnet system 1, sliding slot 41 be provided with connecting rod 2 with electromagnetism iron series
On one end of 1 connection of system, articulated shaft 42 is arranged in dynamic iron core 12.Articulated shaft 42 can be fixed on dynamic iron core by modes such as rivetings
On 12, articulated shaft 42 can be bearing.
In the present embodiment, the first static contact 33 and the second static contact 34 set up separately in 31 two sides of moving contact.Drive rod 32 can
It is arranged discoid, is respectively articulated with connecting rod 2 and moving contact 31 in two different radial position, with the hinge joint of connecting rod 2 to disk
The drive rod center of rotation O1 of the drive rod 32 of shape constitutes the first actuating arm 322a, drives with hinge joint to the plate-like of moving contact 31
The drive rod center of rotation O1 of bar 32 constitutes the second actuating arm 322b.Drive identical with drive rod 32 can be set on drive rod 32
The idle pulley of lever center of rotation O1, to increase rotary inertia；Moving contact 31 may also set up it is discoid, or on moving contact 31
The idle pulley of moving contact center of rotation O2 identical with moving contact 31 is set, to increase rotary inertia.Moving contact 31 or idle pulley
On radially position open up self-locking elongated slot 312, in the present embodiment, movable contact 311 and self-locking elongated slot 312 set up separately to be turned in moving contact
The two sides of center O2 are moved, have drive rod articulated shaft 321 on the second actuating arm 322b, drive rod articulated shaft 321 is in self-locking elongated slot 312
Interior movement, when moving contact 31 is located at first position or the second position, the second actuating arm of self-locking elongated slot 312 and drive rod 32
The angle of 322b is in 90 °.Certainly, movable contact 311 and self-locking elongated slot 312 may be alternatively provided at the same side of moving contact center of rotation O2,
As long as self-locking elongated slot 312 passes through the active force of drive rod articulated shaft 321 when moving contact 31 is located at first position or the second position
Overdrive the drive rod center of rotation O1 of bar 32 so that moving contact 31 is able to maintain in first position or the second position, realize from
Lock.
First static contact 33 connects the first power supply, and the second static contact 34 connects second source, and the connection load of moving contact 31 is moved
Contact 31 and the first static contact 33 are closed, and the first power supply is connected, and moving contact 31 and the second static contact 34 are closed, and second source connects
Logical, moving contact 31 acts between the first position and the second position, to realize automatic change-over in the first power supply and second
Conversion between power supply.
Embodiment 2:
See Fig. 2, attachment device 4 is arranged between connecting rod 2 and electromagnet system 1, and sliding slot 41 is provided in dynamic iron core 12 and along dynamic
The direction of action of iron core 12 extends, and articulated shaft 42 is arranged on the one end of connecting rod 2 connecting with electromagnet system 1.
Embodiment 3:
See Fig. 3, attachment device is arranged between connecting rod 2 and contact system 3, and sliding slot 41 is provided with connecting with drive rod 32 for connecting rod 2
On the one end connect, articulated shaft 42 is arranged on drive rod 32.
Embodiment 4:
See Fig. 4, attachment device is arranged between connecting rod 2 and contact system 3, and sliding slot 41 is provided on drive rod 32, articulated shaft 42
It is arranged on the one end of connecting rod 2 being connect with drive rod 32.
The action process of embodiment 1 is as follows: switch initial position is in common closing position, such as Fig. 5 a, when common power supply
When failure, controller controls electromagnet coil power, and coil control microswitch is in closed state, and dynamic iron core 12 is in electricity
It is moved to the left under magnetic field of magnets effect, spring 14 starts energy storage, and articulated shaft 42 slides to the left along sliding slot 41, at this point, due to certainly
The drive rod center of rotation O1 that elongated slot 312 passes through drive rod 32 to the active force of drive rod articulated shaft 321 is locked, in vertical state,
There is no tangential force, moving contact 31 and drive rod 32 are failure to actuate, and are switched still in common "on" position.When articulated shaft 42 moves to
Behind the left end of sliding slot 41, the continuation of dynamic iron core 12 is moved to the left under electromagnet magnetic fields, and the articulated shaft 42 in dynamic iron core 12 is opened
Begin that connecting rod 2 is driven to act, so that drive rod 32 be driven to start to rotate counterclockwise, movable contact 311 and the first static contact 33 start point
From.The continuation of dynamic iron core 12 is moved to the left under electromagnet magnetic fields, is driven connecting rod 2 to act, is moved in drive rod 32 close
Before dead-centre position (the first actuating arm 322a of the drive rod of connecting rod 2 and contact system is in a straight line), such as Fig. 5 b, drive rod 32 is touched
Moving winding controls microswitch, makes its disconnection, to make coil 11 power off, at this point, dynamic iron core 12, which moves to, is attracted stroke most
Final position sets (in the present embodiment, between the dynamic iron core 12 and static iron core 13 of the final position and not in contact with), after coil 11 powers off,
Spring 14 starts to discharge, and pushes dynamic iron core 12 protruding, slides articulated shaft 42 to the right along sliding slot 41, and in this process
In, since the rotary inertia of drive rod 32 and moving contact 31 is larger, which will continue that drive rod 32 is driven to rotate counterclockwise,
And before the right end that articulated shaft 42 moves right sliding slot 41, it using the sliding slot 41 being arranged on connecting rod 2, move connecting rod 2 can relatively
Iron core 12 and free movement, to drive drive rod 32, connecting rod 2 smoothly to reach dead point by inertia, such as Fig. 5 c, and after reforwarding
It is dynamic to cross dead point, such as Fig. 5 d.After drive rod 32, connecting rod 2 turn over dead point, articulated shaft 42 moves right the end of sliding slot 41,
Such as Fig. 5 e, and drive rod 32 is set to continue to rotate counterclockwise under the action of 14 release force of spring, band moving contact 31 rotates clockwise,
Finally making 34 contact closure of movable contact 311 and the second static contact, second source is connected, realize the spare combined floodgate of automatic change-over,
The second actuating arm 322b on drive rod 32 and moving contact are formed close to 90 ° at this time, realize Self-locking angle.When coil is once again powered up,
Dynamic iron core 12 will drive drive rod 32 and carry out the normal closing operation of back-up, and operating principle is same as described above.
Electromagnet above-mentioned is solenoid electromagnet.
Embodiment 5:
See that Fig. 6, electromagnet system 1 further include air gap cushion block 15, the described setting of air gap cushion block 15 dynamic and static iron core 12,13 it
Between, when coil 11 is powered, dynamic iron core 12 is moved to static iron core position, until static iron core 13, air gap cushion block 15, dynamic iron core
12 threes successively contact and abut.Air gap cushion block 15 is fixed in dynamic iron core 12 in the present embodiment.Air gap cushion block 15 is non-magnetic
Material, remanent magnetism when can eliminate the spring release of electromagnet system between sound iron core influence.
Embodiment 6:
See that Fig. 7, air gap cushion block 15 are fixed on static iron core 13.
Embodiment 7:
See Fig. 8, dynamic iron core 12 lengthens, or the distance between adjustment sound iron core, and when coil 11 is powered, dynamic iron core 12 is to quiet
Iron core position movement, until the actuation of static iron core 13, dynamic iron core 12 abuts.
Refer to 9a to 9f, the action process of the switch of embodiment 6 is as follows: switch initial position is in common closing position
It sets, such as Fig. 9 a, when common power supply breaks down, controller controls electromagnet coil power, and dynamic iron core 12 is in electromagnet magnetic field
It is moved to the left under effect, spring 14 starts energy storage, and articulated shaft 42 is slided to the left along sliding slot 41, switched at this time due to self-locking work
With still in common "on" position.After articulated shaft 42 moves to the left end of sliding slot 41, drive rod 32 is driven by connecting rod 2
Start rotation counterclockwise, and rotated together by the second actuating arm 322b band moving contact 31 on drive rod 32, common contact is opened
Beginning separating brake.When dynamic iron core 12 pulls connecting rod 2 to move to close to before dead-centre position, such as Fig. 9 b, dynamic iron core 12 and 15 phase of air gap cushion block
Contact, dynamic iron core 12 move to final position (in the present embodiment, the dynamic iron core 12 of the final position, air gap for being attracted stroke
Successively contacted between cushion block 15 and static iron core 13), since electromagnet coil remains powered on, it is attracted dynamic iron core 12 always and is resisted against
Stationary on air gap cushion block 15, spring 14 is maintained at energy storage state.Rotation of the drive rod 32 due to flying wheel and moving contact 31
Inertia is larger, which will continue that drive rod 32 is driven to rotate counterclockwise, the first drive of dynamic iron core 12, connecting rod 2, drive rod 32
Swing arm 322a in a straight line, reaches dead-centre position, as Fig. 9 c makes connecting rod 2 in inertia using the sliding slot 41 being arranged on connecting rod 2
It can be slided and free movement with respect to dynamic iron core 12 under power effect, to drive drive rod 32, connecting rod 2 smoothly to cross by inertia
Dead-centre position, such as Fig. 9 d.After the first actuating arm 322a, the connecting rod 2 of drive rod 32 turn over dead point, controller controls electromagnetism iron wire
Circle power-off pushes dynamic iron core 12 protruding, slide articulated shaft 42 will along sliding slot 41 to the right at this point, spring 14 starts to discharge
Dynamic, after articulated shaft 42 moves right the right end of sliding slot 41, such as Fig. 9 e, dynamic iron core 12 makes to drive under action from the spring 14
Bar 32 continues to rotate counterclockwise, and band moving contact 31 rotates clockwise, final to realize that switch spare combined floodgate drives at this time such as Fig. 9 f
The second actuating arm and moving contact 31 on bar 32 are formed close to 90 ° of Self-locking angles.When coil is once again powered up, dynamic iron core 12 will drive drive
Lever 32 carries out the normal closing operation of back-up, and operating principle is same as described above.
Air gap cushion block 15 is set in the electromagnet system 1 of automatic change-over or lengthens dynamic iron core 12 or adjustment sound iron
The distance between core, so that dynamic iron core 12 is acted to sound iron core position after coil is powered, dynamic iron core 12 moves to suction
When closing the final position of stroke, static iron core 13, air gap cushion block 15,12 three of dynamic iron core abuts or sound iron core is attracted.At this
In preferred embodiment, the setting of the distance between the degree of thickness or dynamic iron core 12 lengthening of air gap cushion block 15 or sound iron core
Length setting with sliding slot 41 has following matching relationship: when dynamic iron core 12 moves to the final position for being attracted stroke, i.e., quiet
When iron core 13, air gap cushion block 15,12 three of dynamic iron core abut or sound iron core is attracted, the length of sliding slot 41 should be can guarantee
Articulated shaft 42 slides inside it enables mechanism to reach dead-centre position (the first actuating arm 322a of connecting rod 2 and drive rod 32
Positioned at a straight line).In the present embodiment, electromagnet coil control mode is time control, i.e. controller control coil energization one
The section time, control coil powers off after the first actuating arm 322a of guarantee drive rod 32 crosses dead-centre position, the coil conduction time
It is obtained by calculating, testing, at this time just without using microswitch.The electromagnet coil control mode can also are as follows: control
Device control coil is powered, when drive rod is that will extend over dead point, and still ensure that drive rod 32 is rotating after coil blackout at this time
First de-energized of mechanism at dead point is crossed under the action of inertia, until, after connecting rod and drive rod cross dead-centre position, connecting rod 2 exists
It is acted under the action of rotary inertia, so that the mechanism when pivot pin 21 in dynamic iron core 12 will reach the left end of sliding slot 41
Second de-energized, as long as any position touch between the first breakpoint location of mechanism and the second breakpoint location of mechanism is micro-
Dynamic switch cutoff electromagnetism electric coil, greatly reduces the installation accuracy of microswitch.
The present invention is not limited to the above embodiments, and attachment device 4 can also be arranged in the both ends of connecting rod 2 simultaneously, i.e. attachment device 4 is set
It sets between connecting rod 2 and dynamic iron core 12 or attachment device 4 is arranged between connecting rod 2 and drive rod 32.Such as embodiment 8, see
Figure 10, moving contact 31 above-mentioned can be on the same centre of gyration with drive rod 32, and moving contact, idle pulley, drive rod can be set at this time
It is set to one.The dead-centre position of mechanism kinematic process is connecting rod 2 and the position of drive rod 32, moving contact 31 in a straight line.
Claims (6)
1. a kind of automatic change-over, including electromagnet system (1), contact system (3) and connection electromagnet system (1) and touching
The push and pull system of head system (3)；Electromagnet system (1) includes coil (11), dynamic iron core (12), static iron core (13) and for making
The spring (14) that iron core (12) resets；Contact system (3) includes the first static contact (33), the second static contact (34), moving contact
(31) and driving moving contact (31) drive rod (32) for acting between the first position and the second position, moving contact (31) is located at the
It is closed when one position with the first static contact (33), is closed when moving contact (31) is located at the second position with the second static contact (34)；Line
When enclosing (11) energization, dynamic iron core (12) acts to static iron core (13) position and makes spring (14) energy storage, drives drive rod
(32), to drive moving contact (31) to leave first position, when coil (11) powers off, spring (14), which releases energy, drives drive rod
(32), to drive moving contact (31) movement to the second position；It is characterized in that the push and pull system includes connecting rod (2) and connects
Connection device (4), attachment device (4) include sliding slot (41) and the articulated shaft (42) in the interior movement of sliding slot (41), the electromagnetism iron series
It is connect, is made by the attachment device (4) between system (1) and connecting rod (2) and/or between the drive rod (32) and connecting rod (2)
Both electromagnet system (1) and connecting rod (2) can opposite sliding and rotation, and/or, drive rod (32) and connecting rod (2) the two can
Relative to sliding and rotation.
2. automatic change-over according to claim 1, it is characterised in that the sliding slot (41) is provided with the connecting rod
(2) on and it is located at connecting rod (2) one end for being connected with the electromagnet system (1) or to move along the dynamic iron core (12)
Make direction state to be provided on dynamic iron core (12), in which: when the sliding slot (41) is being provided with the connecting rod (2) with the electromagnetism
When one end that iron series system is connected, then the articulated shaft (42) is arranged on dynamic iron core (12)；And when the sliding slot (41) with
When being provided on dynamic iron core (12) along the state of dynamic iron core (12) direction of action, then the articulated shaft (42) is arranged described
The one end of connecting rod (2) being connected with the electromagnet system.
3. automatic change-over according to claim 1, it is characterised in that the sliding slot (41) is provided with the connecting rod
(2) on and it is located at connecting rod (2) one end for being connected with the drive rod (32) or is provided on the drive rod (32),
In: when the sliding slot (41) is provided with the one end of the connecting rod (2) being connected with the drive rod (32), then the hinge
Spindle (42) is arranged on the drive rod (32)；And when the sliding slot (41) is provided on the drive rod (32), then
The articulated shaft (42) is arranged on connecting rod (2) and is located at one end that connecting rod (2) are connected with drive rod (32).
4. automatic change-over according to claim 1, it is characterised in that the moving contact (31) is equipped with one along dynamic touching
The self-locking elongated slot (312) that the radial direction of head (31) opens up, the drive rod (32) are equipped with drive rod articulated shaft (321), the driving
Bar articulated shaft (321) movement in self-locking elongated slot (312), when moving contact (31) are located at the first position or the second position
When, the angle of self-locking elongated slot (312) and drive rod (32) is in 90 °.
5. automatic change-over according to claim 1, it is characterised in that the electromagnet system (1) further includes air gap
Cushion block (15), the air gap cushion block (15) are arranged between the dynamic and static iron core (12,13), when the coil (11) are powered, move
Iron core (12) is to the movement of static iron core (13) position until static iron core (13), air gap cushion block (15) and dynamic iron core (12) three
It abuts.
6. automatic change-over according to claim 5, it is characterised in that the air gap cushion block (15) is fixed on quiet iron
On core (13) or it is fixed in the dynamic iron core (12).
Priority Applications (1)
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| CN111463036A (en) * | 2020-05-08 | 2020-07-28 | 德布森电气（上海）有限公司 | Device capable of switching driving gears |
| CN113972093A (en) * | 2020-07-24 | 2022-01-25 | 平高集团有限公司 | Tripping device and spring operating mechanism using same |
| CN114360977A (en) * | 2022-03-10 | 2022-04-15 | 东莞市中汇瑞德电子股份有限公司 | Circuit breaker capable of being remotely controlled |
| CN114664581A (en) * | 2021-12-24 | 2022-06-24 | 河南平高通用电气有限公司 | Driving connecting rod assembly of outdoor three-position switch and outdoor three-position switch |
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