CN203596316U - Bistable permanent magnetic mechanism - Google Patents
Bistable permanent magnetic mechanism Download PDFInfo
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- CN203596316U CN203596316U CN201320814264.1U CN201320814264U CN203596316U CN 203596316 U CN203596316 U CN 203596316U CN 201320814264 U CN201320814264 U CN 201320814264U CN 203596316 U CN203596316 U CN 203596316U
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- iron core
- permanent magnet
- moving iron
- pole
- outer yoke
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Abstract
A bistable permanent magnetic mechanism comprises an outer magnet yoke and a mandrel disposed in the center of the outer magnet yoke. The mandrel is made of a non-magnetic-conductive material. Two disconnected movable iron cores are symmetrically disposed on the circumference of the mandrel. An inner wall of the outer magnet yoke, corresponding to two sides of each movable iron core, is provided with a closing pole and an opening pole. Both the closing pole and the opening pole are provided with working faces which can attract the movable iron cores. The closing pole and the opening pole are provided with a closing coil and an opening coil respectively used for driving the movable iron cores to do reciprocating motion between the closing pole and the opening pole. An inner wall of the outer magnet yoke is provided with permanent magnets which are corresponding to outer side faces of the movable iron cores all the time during the motion process of the movable iron cores. The permanent magnets separate the movable iron cores from the inner wall of the outer magnet yoke. According to the bistable permanent magnetic mechanism, the permanent magnetic flux generated by the permanent magnets are not short-circuited by the outer magnet yoke, and thus the movable iron cores are guaranteed to have enough magnetic flux to pass through the working face of the closing pole or working face of the opening pole, and the movable iron cores can be maintained at the latching position of the closing pole or the latching position of the opening pole, and the reliability of the closing or opening operation is guaranteed.
Description
Technical field
The utility model relates to technical field of electric appliances, is particularly suitable as the operating mechanism of vacuum circuit-breaker in the box fixing cabinet of gas-insulated, a kind of bistable-state permanent magnet mechanism specifically.
Background technology
Permanent magnet mechanism motion parts are few, simple in structure, and reliability is high, are specially adapted to need frequent operation or the vacuum circuit-breaker of long mechanical endurance.Particularly indoor vacuum circuit breaker of vacuum circuit-breaker at present, great majority all need to rotate the operating mechanism of output, and the permanent magnet mechanism linear movement output of prior art, as shown in Figure 1, left yoke 101 and right yoke 601 are arranged respectively in outer yoke 301 both sides, switching winding 201, permanent magnet 401 and closing coil 501 are arranged in the inner side of outer yoke 301 successively, then at the moving iron core 701 of overall center arrangement, both sides arrange guidance feature respectively in left yoke 101 and right yoke 601, guarantee that moving iron core 701 can be at the center of permanent magnet mechanism rectilinear motion vertically.In the time that moving iron core 701 contacts with left yoke 101 or right yoke 601, permanent magnet 401 is set up permanent magnetism confining force between moving iron core 701 and left yoke 101 or right yoke 601, realizes stable lockup state.In use, rectilinear motion need to be transformed into circuit breaker is needed to rotatablely move.The motion conversion links increasing thus, has reduced operating efficiency and the reliability of mechanism, and has increased design difficulty.
Utility model content
The utility model, for the deficiency of above-mentioned existing permanent magnet mechanism, provides a kind of and can export the bistable-state permanent magnet mechanism rotatablely moving, and is a kind of simple in structure, the Electromagnetically-operating that reliability is high, the bistable-state permanent magnet mechanism that permanent magnetism keeps.
The utility model for solving the problems of the technologies described above adopted technical scheme is: a kind of bistable-state permanent magnet mechanism, comprise that an outer yoke with round cavity and one are arranged on the axle at outer yoke center, described axle is made up of non-magnet_conductible material, on the circumference of axle, be arranged with two moving iron cores that do not join mutually, on the inwall of described outer yoke, be equipped with a combined floodgate utmost point and a point of gate corresponding to the both sides of each moving iron core, on the described combined floodgate utmost point and point gate, be equipped with can with the working face of moving iron core adhesive, on the combined floodgate utmost point and point gate, be arranged with respectively for driving moving iron core reciprocating closing coil and switching winding between the combined floodgate utmost point and point gate, the inwall of outer yoke is provided with in moving iron core motion process corresponding with its lateral surface all the time permanent magnet, permanent magnet separates the inwall of moving iron core and outer yoke, iron core is not directly contacted with outer yoke.
The center of described axle is provided with spline or flat key, has facilitated the output that described in the utility model, permanent magnet mechanism moves.
In the utility model, the inner circle of described outer yoke is provided with pole shoe, and permanent magnet is located on pole shoe, forms permanent magnet circuit with the combined floodgate utmost point or point gate in moving iron core, outer yoke, and provide magnetomotive force for permanent magnet circuit, when moving iron core contacts with the combined floodgate utmost point, permanent magnet flux passes through from the contact-making surface of the two, produces permanent magnetism confining force, thereby make iron core locking and remain on "on" position, in like manner, when moving iron core contacts with a point gate, make iron core locking and remain on gate-dividing state.
Outer yoke in the utility model and moving iron core are high magnetic permeability soft magnetic material, axle is stainless steel or plastic material, permanent magnet is the tile shape structure of the strong magnetic material of neodymium iron boron, and the material of two permanent magnets is identical, permanent magnet is along the diametrical magnetization of axle, if the inner side of permanent magnet is the N utmost point, outside is the S utmost point.
The beneficial effects of the utility model are:
(1) permanent magnet is corresponding with moving iron core lateral surface all the time in moving iron core motion process, and permanent magnet separates the inwall of moving iron core and outer yoke, iron core is not directly contacted with outer yoke, permanent magnet mechanism of the present utility model is in the time of combined floodgate or separating brake actuating, the permanent magnet flux that permanent magnet produces can be by outer yoke short circuit, guarantee that moving iron core has enough magnetic fluxs by the working face of moving iron core and the combined floodgate utmost point or point gate, the lock position that makes iron core keep being fitted in the combined floodgate utmost point or divide gate, the reliability of assurance combined floodgate or separating brake work;
(2) two moving iron cores do not contact mutually, and axle is made up of non-magnet_conductible material, when the work of closing coil or switching winding, the magnetic circuit producing in two moving iron cores can phase mutual interference, thus the suction-combining force to moving iron core while having improved closing coil or switching winding work;
(3) in the utility model, when closing coil or switching winding work, because axle is made up of non-magnet_conductible material, can avoid the central axis direction transmission of magnetic circuit along outer yoke round cavity, avoid weakening magnetic field radially, the enough the suction-combining forces that has to moving iron core while guaranteeing closing coil or switching winding work;
(4) the utility model is as a kind of operating mechanism of vacuum circuit-breaker, can guarantee that vacuum circuit-breaker separating brake keeps or close a floodgate keeping two operating states, in closing coil or switching winding, pass into direct current respectively, can drive and move iron core clockwise or be rotated counterclockwise, realize combined floodgate or the sub-switching operation of circuit breaker, this mechanism can be within the scope of design angle, and moving iron core output comes and goes and rotatablely moves, and provides certain maintenance moment of torsion at the combined floodgate utmost point or a point gate lock position;
(5) the utility model mechanism structure is simple, and amount of parts is few, and reliability is high, can directly be installed on the transmission main shaft of vacuum circuit-breaker, drives the divide-shut brake of vacuum circuit-breaker, further simplifies the driving link of vacuum circuit-breaker, and operating efficiency is provided.
Accompanying drawing explanation
Fig. 1 is the accompanying drawing in background technology;
Fig. 2 is structural representation of the present utility model;
Fig. 3 to Fig. 4 is the schematic diagram of permanent magnet mechanism described in the utility model in combined floodgate stable position;
Fig. 5 to Fig. 6 is the schematic diagram of permanent magnet mechanism described in the utility model in separating brake stable position.
Reference numeral: 1, outer yoke, 2, permanent magnet, 3, moving iron core, 4, closing coil, 5, switching winding, 6, axle, 7, the combined floodgate utmost point, 8, point gate, 9, loop I, 10, loop II, 11, loop III, 12, loop IV.
Embodiment
As shown in Figure 2, a kind of bistable-state permanent magnet mechanism, comprise that an outer yoke 1 with round cavity and one are arranged on the axle 6 at outer yoke 1 center, described axle 6 is made up of non-magnet_conductible material, on the circumference of axle 6, be arranged with two moving iron cores 3 that do not join mutually, on the inwall of described outer yoke 1, be equipped with a combined floodgate utmost point 7 and a point of gate 8 corresponding to the both sides of each moving iron core 3, on the described combined floodgate utmost point 7 and point gate 8, be equipped with can with the working face of moving iron core 3 adhesives, on the combined floodgate utmost point 7 and point gate 8, be arranged with respectively for driving moving iron core 3 reciprocating closing coil 4 and switching winding 5 between the combined floodgate utmost point 7 and point gate 8, the inwall of outer yoke 1 is provided with in moving iron core 3 motion processes corresponding with its lateral surface all the time permanent magnet 2, permanent magnet 2 separates moving iron core 3 and the inwall of outer yoke 1, iron core 3 is not directly contacted with outer yoke 1.
In the utility model, permanent magnet 2 is arranged at the inside of outer yoke 1 interior pole shoe, form permanent magnet circuit with in moving iron core 3, outer yoke 1 point of gate 8 or the combined floodgate utmost point 7, and be the magnetic potential that provides of permanent magnet circuit, when moving iron core 3 contacts with point gate 8 or the combined floodgate utmost point 7, permanent magnet flux passes through from contact-making surface, produces permanent magnetism confining force, thereby makes iron core 3 lockings and remain on separating brake or "on" position.Moving iron core 3 links with axle 6 rigidity, can be around axle 6 center reciprocating rotations, output torque.Switching winding 5 and closing coil 4, in excitation situation, will drive moving iron core 3 to rotate to point gate 8 directions or the combined floodgate utmost point 7 directions respectively.
Described outer yoke 1 is high magnetic permeability soft magnetic material, a point gate 8, the combined floodgate utmost point 7 are set on it, and they occur in pairs, and symmetrical around axle 6 central shafts, as shown in Figure 2, two pairs of points of gates 8 and the combined floodgate utmost point 7 are set in outer yoke 1, and permanent magnet 2 is the NdFeB material of tile shape structure, is close on the interior pole shoe of outer yoke 1, permanent magnet 2 is along the radial direction magnetization of axle 6, as shown in Figure 2, permanent magnet 2 inner sides are the N utmost point, and outside is the S utmost point.Moving iron core 3 is high magnetic permeability soft magnetic material, and axle 6 is the non-magnet_conductible materials such as stainless steel or plastics.Moving iron core 3 is fixed in axle 6, and claims to arrange around axle 6 axis, and moving iron core 3 is arranged between 1 point of gate 8 of outer yoke and the combined floodgate utmost point 7, can be with the certain corner of axle 6 reciprocating rotation.Axle 6 centers arrange the feature such as spline or flat key, facilitate permanent magnet mechanism to carry out movement output.
The utility model combined floodgate operation principle is:
As shown in Figure 3, described permanent magnet mechanism is in combined floodgate stable position, and permanent magnet 2 is set up permanent magnet circuit, the magnetic line of force loop line I as shown in Fig. 39 that distributes, and in direction shown in Fig. 3, loop line I is counterclockwise, by single arrow sign.Moving iron core 3 contacts with the combined floodgate utmost point 7, and permanent magnet magnetic flux all passes through from loop I, will move iron core 3 and inhale on the combined floodgate utmost point 7.
As shown in Figure 4, when switching winding 5 is by direct current excitation, set up electromagnetic circuit, the loop line II that the magnetic line of force distributes as shown in Fig. 4 10 as the magnetic line of force, in direction shown in Fig. 4, loop line II is clockwise direction, indicates with double-head arrow.The magnetic flux of the magnetic flux of this switching winding 5 and permanent magnet 2 is in the 7 places stack of the combined floodgate utmost point, and the suction that iron core 3 is subject in the combined floodgate utmost point 7 places reduces.In the time that the electric current of switching winding 5 increases to certain value, the attraction that moving iron core 3 is subject in the combined floodgate utmost point 7 places is less than the mechanical load moving on iron core 3 as contact pressure, moving iron core 3 just rotates counterclockwise, once moving iron core 3 is opened from the combined floodgate utmost point 7, between moving iron core 3 and the combined floodgate utmost point 7, just there is air-gap, magnetic resistance increases, and opposite side reduces with dividing the magnetic resistance between gate 8.The combined floodgate utmost point 7 reduces the attraction of moving iron core 3, and point gate 7 increases the attraction of moving iron core 3.On moving iron core 3, to dividing increase making a concerted effort in gate 8 directions, make iron core 3 accelerate to rotate to point gate 8 directions, rotate counterclockwise, until contact with dividing a gate 8, complete separating brake action, as shown in Figure 5.
The utility model separating brake operation principle is:
As shown in Figure 5, described permanent magnet mechanism is in separating brake stable position, and permanent magnet 2 is set up permanent magnet circuit, and the magnetic line of force loop line III as shown in Fig. 5 11 that distributes, is clockwise direction in the direction as shown of Fig. 5, indicates with single arrow.Moving iron core 3 contacts with a point gate 8, and permanent magnet 2 magnetic fluxs all pass through from loop 1, will move iron core 3 and inhale on point gate 8.
As shown in Figure 6, when closing coil 4 is by direct current excitation, set up electromagnetic circuit, the magnetic line of force loop line IV as shown in Fig. 6 12 that distributes, is counter clockwise direction in the direction as shown of Fig. 6, indicates with double-head arrow.The magnetic flux of this closing coil 4 and permanent magnet flux are in the 8 places stack of point gate, the suction that iron core 3 is subject in point gate 8 places reduces, in the time that closing coil 4 electric currents increase to certain value, the attraction that moving iron core 3 is subject in point gate 8 places is less than the mechanical load on moving iron core 3, and moving iron core 3 just clockwise rotates.Once moving iron core 3 is opened from a point gate 8, between moving iron core 3 and point gate 8 with regard to outlet air-gap, magnetic resistance increase, and magnetic resistance between opposite side and the combined floodgate utmost point 7 reduces.Divide gate 8 to reduce the attraction of moving iron core 3, the combined floodgate utmost point 7 increases the attraction of moving iron core 3.On moving iron core 3, increase making a concerted effort in the combined floodgate utmost point 7 directions, makes iron core 3 accelerate to rotate to the combined floodgate utmost point 7 directions, counterclockwise, until contact with the combined floodgate utmost point 7, completes feed motion, as shown in Figure 3.
Claims (4)
1. a bistable-state permanent magnet mechanism, comprise that an outer yoke (1) with round cavity and one are arranged on the axle (6) at outer yoke (1) center, it is characterized in that: described axle (6) is made up of non-magnet_conductible material, on the circumference of axle (6), be arranged with two moving iron cores (3) that do not join mutually, on the inwall of described outer yoke (1), be equipped with a combined floodgate utmost point (7) and a point of gate (8) corresponding to the both sides of each moving iron core (3), on the described combined floodgate utmost point (7) and point gate (8), be equipped with can with the working face of moving iron core (3) adhesive, on the combined floodgate utmost point (7) and point gate (8), be arranged with respectively for driving moving iron core (3) reciprocating closing coil (4) and switching winding (5) between the combined floodgate utmost point (7) and point gate (8), the inwall of outer yoke (1) is provided with in moving iron core (3) motion process corresponding with its lateral surface all the time permanent magnet (2), permanent magnet (2) separates with the inwall of outer yoke (1) moving iron core (3), iron core (3) is not directly contacted with outer yoke (1).
2. a kind of bistable-state permanent magnet mechanism according to claim 1, is characterized in that: the center of described axle (6) is provided with spline or flat key.
3. a kind of bistable-state permanent magnet mechanism according to claim 1, is characterized in that: described axle (6) is stainless steel or plastic material, and the material of two permanent magnets (2) is identical.
4. a kind of bistable-state permanent magnet mechanism according to claim 1, is characterized in that: the inner circle of described outer yoke (1) is provided with pole shoe, and permanent magnet (2) is located on pole shoe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320814264.1U CN203596316U (en) | 2013-12-12 | 2013-12-12 | Bistable permanent magnetic mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320814264.1U CN203596316U (en) | 2013-12-12 | 2013-12-12 | Bistable permanent magnetic mechanism |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203596316U true CN203596316U (en) | 2014-05-14 |
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ID=50677180
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320814264.1U Withdrawn - After Issue CN203596316U (en) | 2013-12-12 | 2013-12-12 | Bistable permanent magnetic mechanism |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203596316U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103715009A (en) * | 2013-12-12 | 2014-04-09 | 库柏爱迪生(平顶山)电子科技有限公司 | Bistable permanent magnetic mechanism |
| CN113782353A (en) * | 2021-09-15 | 2021-12-10 | 福州大学 | Novel CPS rotary electromagnetic operating mechanism and working method thereof |
| CN114156122A (en) * | 2021-12-15 | 2022-03-08 | 正勤电气(沈阳)有限公司 | Separated magnetic circuit type bistable permanent magnet operating mechanism |
-
2013
- 2013-12-12 CN CN201320814264.1U patent/CN203596316U/en not_active Withdrawn - After Issue
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103715009A (en) * | 2013-12-12 | 2014-04-09 | 库柏爱迪生(平顶山)电子科技有限公司 | Bistable permanent magnetic mechanism |
| CN103715009B (en) * | 2013-12-12 | 2016-08-17 | 库柏爱迪生(平顶山)电子科技有限公司 | A kind of bistable-state permanent magnet mechanism |
| CN113782353A (en) * | 2021-09-15 | 2021-12-10 | 福州大学 | Novel CPS rotary electromagnetic operating mechanism and working method thereof |
| CN114156122A (en) * | 2021-12-15 | 2022-03-08 | 正勤电气(沈阳)有限公司 | Separated magnetic circuit type bistable permanent magnet operating mechanism |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20140514 Effective date of abandoning: 20160817 |
|
| C25 | Abandonment of patent right or utility model to avoid double patenting |