CN2788338Y - Double stable state permanent magnetic operating structure with manual separate brake device - Google Patents
Double stable state permanent magnetic operating structure with manual separate brake device Download PDFInfo
- Publication number
- CN2788338Y CN2788338Y CN 200520080341 CN200520080341U CN2788338Y CN 2788338 Y CN2788338 Y CN 2788338Y CN 200520080341 CN200520080341 CN 200520080341 CN 200520080341 U CN200520080341 U CN 200520080341U CN 2788338 Y CN2788338 Y CN 2788338Y
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- China
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- permanent magnet
- operating mechanism
- end cap
- shell
- manual switching
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Abstract
The utility model relates to a bistable permanent-magnet operating mechanism with a manual brake opening device of a power switch, which comprises a permanent-magnet switch operating mechanism, wherein one side of the permanent-magnet switch operating mechanism is fixedly provided with the manual brake opening device. The manual brake opening device comprises a big support plate and a small support plate, wherein the big support plate and the small support plate are fixedly arranged on an end cover at one side of a casing. Transmission shafts are rotationally inserted on the big support plate and the small support plate, an eccentric wheel is fixedly arranged on the transmission shaft and a manual brake opening spring is positioned between an end cap and the end cover and is connected between the eccentric wheel and the big support plate. The operating mechanism has the advantages of simple structure, low failure rate and rapid and reliable actions of the manual brake opening and can realize that the operation has no failures in hundred thousand times, therefore the purpose of the maintenance free can be achieved.
Description
Technical field
The utility model relates to the operating mechanism of power switch, is a kind of bistable state permanent magnet operating mechanism that has manual switching-off device specifically.
Background technology
Existing power switch great majority are actions of being finished separating brake, combined floodgate by electromagnetic operating mechanism or spring operating mechanism, and the deficiency of electromagnetic operating mechanism is that mechanical locking device will be set in addition, complex structure, failure rate height, and noise is big, useful life is short; Spring operating mechanism then needs motor drives, and by mechanical latching, complex structure, heaviness are moved dumbly, and noise is big, the failure rate height.In addition, occurred the monostable operating mechanism in recent years, the operating mechanism of this form prolongs substantially than bistable complexity, particularly manual switching-off device has used traditional dropout principle, and many, the complex structure of part is so latch portion is easy to break down.The manual switching-off device of the operating mechanism of above-mentioned several forms, all the regular event with mechanism moves, because of the life-span weak point that acts frequently.My another patent ZL98220417.5 (a kind of permanent-magnet operating mechanism of vacuum switch) discloses a kind of operating mechanism that relies on the electromagnetic force divide-shut brake, relies on the magnetic force locking of permanent magnet, have characteristics simple in structure, that reliability is high, failure rate is low, can realize non-maintaining.The defective that exists is, because permanent magnet suction is very big, in case solenoid breaks down, then compares difficulty when needing with manual brake separating, uses the manual brake separating mechanism of common lever principle can't guarantee the stable of opening velocity.
Summary of the invention
The purpose of this utility model provide a kind of simple in structure, failure rate is low, make things convenient for the bistable state permanent magnet operating mechanism that has manual switching-off device of manual brake separating.
For achieving the above object, the utility model adopts following technical scheme:
A kind of bistable state permanent magnet operating mechanism that has manual switching-off device described in the utility model comprises permanent magnet switch operating mechanism, be provided with output shaft in the shell of this permanent magnet switch operating mechanism, it is overhanging that output shaft passes the end cap at shell two ends, its front end is connected with actuator, be fixed with iron core on the output shaft, the arranged outside of iron core has permanent magnet, permanent magnet is fixedlyed connected with shell, the two ends of permanent magnet respectively are provided with set of pulses coil, the rear end of output shaft is fixedly connected with end cap, on a side end cap of permanent magnet switch operating mechanism, be installed with manual switching-off device, this manual switching-off device comprises big supporting bracket and the little supporting bracket that is fixedly mounted on shell one side end cap, power transmission shaft is inserted on big supporting bracket and the little supporting bracket rotationally, eccentric wheel is fixedly mounted on the power transmission shaft, between end cap and end cap, be connected with the manual brake separating spring between eccentric wheel and the big supporting bracket.
The contact site of output shaft and shell is equipped with antimagnetic axle sleeve, has inwardly protruded end cap magnetic boots on the end cap around the antimagnetic axle sleeve, and the middle part of the shell between two pulsed coils has inwardly protruded shell magnetic boots.
Eccentric wheel is discoid, is fixedly connected on the power transmission shaft by the fixing point that is positioned at the center of circle one side.
Eccentric wheel also can be elliptic wheel or other minutes linearity curve wheel.
The round barrel shape that is shaped as of shell also can be for square.
Because eccentric wheel and power transmission shaft are fixed together, when to separating brake direction rotating drive shaft, eccentric wheel is that rotate at the center with the power transmission shaft, thereby moved in the point of contact of eccentric wheel and end cap to the separating brake direction, the jack-up end cap, thereby, realize the separating brake action with the layback of output shaft to manual switching-off device.Simultaneously because the bistable state effect of permanent magnet, if the iron core on the output shaft cross permanent magnet the center after, the attraction of permanent magnet will tightly be inhaled iron core on the end cap of manual switching-off device one side.This operating mechanism is simple and reliable for structure, failure rate is low, manual brake separating is swift in motion.
Description of drawings
Fig. 1 is the cutaway view of an embodiment of the present utility model;
Fig. 2 is the right view of Fig. 1;
Fig. 3 is the left view of Fig. 1.
Embodiment
As shown in drawings, a kind of bistable state permanent magnet operating mechanism that has manual switching-off device described in the utility model, comprise permanent magnet switch operating mechanism and manual switching-off device, be provided with output shaft 2 in the shell 1 of this permanent magnet switch operating mechanism, it is overhanging that output shaft 2 passes the end cap 15 at shell 1 two ends, its front end is connected with actuator by connecting pin 17, and the rear end is fixedly connected with end cap 9.The material of shell 1 and end cap 15 all is the irony of easy magnetic conduction.Output shaft 2 is set with antimagnetic axle sleeve 11 with the contact site of shell 1, the stage casing that output shaft 2 is positioned at shell 1 inside fixedly mounts cored 3, the arranged outside of iron core 3 has permanent magnet 4, permanent magnet 4 is fixedlyed connected with shell 1, the two ends of permanent magnet 4 respectively are provided with set of pulses coil 5, the middle part of the shell 1 between two pulsed coils 5 has inwardly protruded shell magnetic boots 13, has inwardly protruded end cap magnetic boots 12 on the end cap 15 around the antimagnetic axle sleeve 11.The effect of shell magnetic boots 13 and end cap magnetic boots 12 all is in order to reduce magnetic resistance, to reduce the loss of the magnetic line of force.On a side end cap 15 of permanent magnet switch operating mechanism, be installed with manual switching-off device, this manual switching-off device comprises big supporting bracket 6 and the ramuscule fagging 7 that is fixedly mounted on shell 1 one side end caps 15, big supporting bracket 6 and ramuscule fagging 7 lay respectively at the both sides of output shaft 2, power transmission shaft 8 is inserted on big supporting bracket 6 and the ramuscule fagging 7 rotationally, between a side, end cap 9 and the end cap 15 of output shaft 2.Eccentric wheel 14 is fixedly mounted on the power transmission shaft 8, between end cap 9 and end cap, be fixedly connected on spring hanging column on the eccentric wheel 14 and pass the end that open slot on the big supporting bracket 6 is connected manual brake separating spring 10, the other end of manual brake separating spring 10 hangs on the spring hanging point on the big supporting bracket 6, spring hanging point on spring hanging column on the eccentric wheel 14 and the big supporting bracket 6 should lay respectively at two ends, power transmission shaft 8 axle center, and in initial position, cross spring " dead point " slightly, and the pulling force of spring is wanted at least to make iron core 3 cross the center of permanent magnet 4 in separating brake.
The operation principle of bistable state permanent magnet operating mechanism is as follows: add pulse current for two pulsed coils 5, pulse current produces induced field in pulsed coil 5, this induced field part is in order to offset the magnetic field that permanent magnet 4 produces, another part acts on iron core 3, produce suction, iron core 3 is moved, and finally under electromagnetic force and permanent magnet attraction double action, be adsorbed on the side end cap 15.When iron core 3 moves, drive the actuator that is connected on the output shaft 2 and finish the divide-shut brake action.After the current vanishes in the pulsed coil 5, the magnetic field that pulse current produces also disappears thereupon, and under the action of a magnetic field that permanent magnet 4 produces, iron core 3 still is attracted on the end cap 15, and switch keeps original operating state.When needs change operating state, promptly when needing to carry out the action of separating brake or combined floodgate, only need in pulsed coil 5, add rightabout pulse current, output shaft 2 is oppositely moved, iron core 3 is adsorbed on the opposite side end cap 15, realizes the transformation of operating state, and keeps stable.
The effect of manual switching-off device is can manually operating state be switched to gate-dividing state when solenoid 5 breaks down.
The ratio of power arm and resistance arm changed with the anglec of rotation of eccentric wheel 14 when manual switching-off device eccentric wheel 14 made manual brake separating.When manual brake separating began, the ratio of the arm of force was very big, applied less power and just can overcome permanent magnet suction, made output shaft 2 and iron core 3 to the motion of separating brake direction, and along with the increase of iron core 3 with end cap 15 gaps, permanent magnetism suction reduces thereupon fast.Along with the increasing of eccentric wheel 14 anglecs of rotation, the ratio of the arm of force reduces rapidly, and output shaft 2 movement velocitys are constantly accelerated, thereby reaches the purpose of quick acting switching-off.
In operate as normal, manual switching-off device is inoperative, manual brake separating spring 10 utilizes eccentric wheel 14 to cross angle of stability after " dead point " with power transmission shaft 8 lockings, and it can not be rotated arbitrarily, and this moment, the operating mechanism of switch relied on the magnetic force in the solenoid 5 to realize the divide-shut brake action.When solenoid breaks down, when can not realize separating brake, as long as move the handle 16 on the power transmission shaft 8, make power transmission shaft 8 turn over certain angle to the separating brake direction, the hanging point of manual brake separating spring 10 is crossed after " dead point " (spring is extended line of the axial connecting line of hanging point and power transmission shaft 8 fixedly), under the acting in conjunction of the pulling force of manual brake separating spring 10 and separating brake handle power, and eccentric wheel 14 quick rotation, and promote end cap 9, drive output shaft 2 to separating brake direction fast moving by end cap 9 again.Iron core 3 cross rapidly permanent magnet 4 the center and and then tightly being inhaled on the end cap 15 of manual switching-off device one side under the effect of permanent magnetism power, reach the purpose of quick acting switching-off.Owing to after the manual brake separating handle turns over certain angle, mainly rely on the pulling force of manual brake separating spring 10 to carry out separating brake, thereby avoided of the influence of the unsteadiness of human factor to opening velocity.After solenoid 5 faults are got rid of, next time is during electric switch-on, under the effect of combined floodgate electromagnetic force, iron core 3 drives output shaft 2, end cap 9 moves to the combined floodgate direction, eccentric wheel 14 overcomes manual brake separating spring 10 under the pressure effect of end cap 9 pulling force is to counter-rotation, and when the spring hanging point on the eccentric wheel 14 was crossed " dead point ", eccentric wheel 14 turned over an angle of stability under the spring tension effect, arrive point of safes and realize spring energy-storage, for next manual brake separating is got ready.Owing to the effect of angle of stability, manual brake separating spring 10 can not form reaction force to permanent magnetism suction, can guarantee that switch contact pressure does not reduce after closing a floodgate.After eccentric wheel 14 arrived point of safes, because the effect of angle of stability, manual switching-off device was failure to actuate during normal electronic divide-shut brake.Thereby can improve the life cycle of operating mechanism greatly.
It also can be square that the shape of above-mentioned shell 1 can be designed to round barrel shape as required, and the shape of end cap 15 and iron core 3, solenoid 5 also should adapt with it.
The shape of above-mentioned eccentric wheel 14 has determined the situation of change of output shaft 2 translational speeds, can be designed to circle, ellipse or other nonlinear curves as required during actual the use.
Claims (7)
1, a kind of bistable state permanent magnet operating mechanism that has manual switching-off device, comprise permanent magnet switch operating mechanism, be provided with output shaft (2) in the shell of this permanent magnet switch operating mechanism (1), it is overhanging that output shaft (2) passes the end cap (15) at shell (1) two ends, its front end is connected with actuator, be fixed with iron core (3) on the output shaft (2), the arranged outside of iron core (3) has permanent magnet (4), permanent magnet (4) is fixedlyed connected with shell (1), the two ends of permanent magnet (4) respectively are provided with set of pulses coil (5), it is characterized in that: the rear end of output shaft (2) is fixedly connected with end cap (9), on a side end cap of permanent magnet switch operating mechanism, be installed with manual switching-off device, this manual switching-off device comprises big supporting bracket (6) and the little supporting bracket (7) that is fixedly mounted on shell (1) one side end cap (15), power transmission shaft (8) is inserted on big supporting bracket (6) and the little supporting bracket (7) rotationally, eccentric wheel (14) is fixedly mounted on the power transmission shaft (8), be positioned between end cap (9) and the end cap (15), be connected with manual brake separating spring (10) between eccentric wheel (14) and the big supporting bracket (6).
2, a kind of bistable state permanent magnet operating mechanism that has manual switching-off device according to claim 1, it is characterized in that: output shaft (2) is equipped with antimagnetic axle sleeve (11) with the contact site of shell (1), have inwardly protruded end cap magnetic boots (12) on antimagnetic axle sleeve (11) end cap (15) on every side, the middle part that is positioned at the shell (1) between two pulsed coils (5) has inwardly protruded shell magnetic boots (13).
3, a kind of bistable state permanent magnet operating mechanism that has manual switching-off device according to claim 1 and 2 is characterized in that: eccentric wheel (14) is fixedly connected on the power transmission shaft (8) by the fixing point that is positioned at the center of circle one side for discoid.
4, a kind of bistable state permanent magnet operating mechanism that has manual switching-off device according to claim 1 and 2 is characterized in that: eccentric wheel (14) is an elliptic wheel.
5, a kind of bistable state permanent magnet operating mechanism that has manual switching-off device according to claim 1 and 2, it is characterized in that: the edge of eccentric wheel (14) is a nonlinear curve.
6, a kind of bistable state permanent magnet operating mechanism that has manual switching-off device according to claim 1 and 2 is characterized in that: shell (1) be shaped as round barrel shape.
7, a kind of bistable state permanent magnet operating mechanism that has manual switching-off device according to claim 1 and 2, it is characterized in that: the cross sectional shape of shell (1) is square.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520080341 CN2788338Y (en) | 2005-01-25 | 2005-01-25 | Double stable state permanent magnetic operating structure with manual separate brake device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520080341 CN2788338Y (en) | 2005-01-25 | 2005-01-25 | Double stable state permanent magnetic operating structure with manual separate brake device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2788338Y true CN2788338Y (en) | 2006-06-14 |
Family
ID=36786634
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200520080341 Expired - Fee Related CN2788338Y (en) | 2005-01-25 | 2005-01-25 | Double stable state permanent magnetic operating structure with manual separate brake device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2788338Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102254715A (en) * | 2010-05-18 | 2011-11-23 | 李士英 | Permanent magnet switch |
-
2005
- 2005-01-25 CN CN 200520080341 patent/CN2788338Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102254715A (en) * | 2010-05-18 | 2011-11-23 | 李士英 | Permanent magnet switch |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |