CN201259843Y

CN201259843Y - Bi-stable permanent magnet mechanism

Info

Publication number: CN201259843Y
Application number: CNU2008201633529U
Authority: CN
Inventors: 万小东; 王书成; 李骏
Original assignee: Zhejiang Chint Electrics Co Ltd
Current assignee: Zhejiang Chint Electrics Co Ltd
Priority date: 2008-08-28
Filing date: 2008-08-28
Publication date: 2009-06-17
Anticipated expiration: 2018-08-28

Abstract

The utility model discloses a bi-stable permanent magnetic mechanism; a moving armature, a rotating shaft, a permanent magnet, a switching coil and a tripping coil are arranged in left and right shells; a switching stopping surface and a tripping stopping surface are arranged on the left and right shells; the moving armature and the rotating shaft are connected into one part which rotates along one direction to the switching stopping surface when the switching coil is electrified, while the tripping coil is electrified, the part rotates to the tripping stopping surface along the other direction; the permanent magnet leads the moving armature to be kept at the position of the switching stopping surface or the tripping stopping surface. In the bi-stable permanent magnetic mechanism, the moving armature rotates a certain angle along clockwise or ant-clockwise direction under the common action of magnetic field force of the winding and the permanent magnet, and the stopping position of the moving armature is kept by the magnetic field force of the permanent magnet. The moving armature drives the rotating shaft for directly driving an operating mechanism in a device to produce action, thus greatly improving transmission efficiency and reliability of the whole device.

Description

A kind of bistable-state permanent magnet mechanism

Technical field

The utility model relates to a kind of electromagnetic actuator, particularly a kind of bistable-state permanent magnet mechanism that rotates by solenoid driving moving armature.

Background technology

In the existing permanent magnet mechanism technology, be to drive the moving armature moving linearly, realize that with permanent magnet combined floodgate keeps or the electromagnetic operating mechanism of a kind of form that separating brake keeps then, and be widely used in vacuum circuit-breaker and the A.C. contactor by solenoid.When being applied in the electrical equipment that drive rod rotates, a mechanical connection need be arranged to existing permanent magnet mechanism technology between permanent magnet mechanism and electrical equipment, so just greatly reduce the transmission efficiency of permanent magnet mechanism and the reliability of whole electrical equipment.For solving above-mentioned this problem, permanent magnet mechanism is used for the electrical equipment that drive rod rotates efficiently, reliably, and utility model a kind ofly drive the bistable-state permanent magnet mechanism that moving armature rotates by solenoid.

Summary of the invention

The purpose of this utility model is to solve existing permanent magnet mechanism to use the problem that exists in the electrical equipment that drive rod rotates, but provides a kind of simple in structure, dependable performance frequent operation and non-damageable bistable-state permanent magnet mechanism.

The technical solution of the utility model is: a kind of bistable-state permanent magnet mechanism, comprise left and right housing, and it is characterized in that being provided with moving armature, rotating shaft, permanent magnet, closing coil and switching winding in the described left and right housing; Described left and right housing is provided with combined floodgate stop surface and separating brake stop surface; Described moving armature and rotating shaft are connected into parts, turn to the combined floodgate stop surface to a direction when closing coil is switched on, and turn to the separating brake stop surface to other direction when switching winding is switched on; Described permanent magnet makes moving armature remain on combined floodgate stop surface or separating brake stop surface place.

Bistable-state permanent magnet mechanism of the present utility model, moving armature to the rotation of making certain angle clockwise or counterclockwise, and remain on stop position to moving armature by the magnetic field force of permanent magnet under the acting in conjunction of coil magnetic field force and permanent magnet magnetic field force.Because the operating mechanism that moving armature drive rotating shaft directly drives in the electrical equipment produces action, has therefore improved the reliability of transmission efficiency and whole electrical equipment widely.

According to the utility model, described moving armature both sides are equipped with a pair of permanent magnet.The volume of described every pair of permanent magnet is identical with magnetic substance.And the volume of described two pairs of permanent magnets is also identical with magnetic substance.

According to the utility model, the two ends of the permanent magnet of at least one side are provided with closing coil and switching winding.Described two pairs of permanent magnets can be embedded in respectively in the mounting groove set on the left and right housing, also can be embedded in the groove set on the moving armature.

Description of drawings

The utility model is described in further detail below in conjunction with drawings and Examples.

Fig. 1 is the expanded view of the utility model along O1, O2 axial direction.Each that wherein thick arrow direction indication is a permanent magnet mechanism is zero, parts launch the back along the axial assembly direction of O1, O2.

Fig. 2 be among Fig. 1 along the cutaway view of A-A face, wherein moving armature is remained on shown position by the magnetic field force of permanent magnet after doing counterclockwise to rotate to left position under the magnetic field force acting in conjunction of the magnetic field force of coil and permanent magnet.

Fig. 3 be among Fig. 1 along the cutaway view of A-A face, wherein moving armature is remained on shown position by the magnetic field force of permanent magnet after rotating to right end position as clockwise direction under the magnetic field force acting in conjunction of the magnetic field force of coil and permanent magnet.

Fig. 4 be among Fig. 2 along the cutaway view of B-B face, indication be the installation site figure of permanent magnet on left and right housing

Fig. 5, Fig. 6, Fig. 7 be respectively second kind of the utility model, the third, the 4th kind of structure example be along the expanded view of O1, O2 axial direction.Each that wherein thick arrow direction indication is a permanent magnet mechanism is zero, parts launch the back along the axial assembly direction of O1, O2.

Embodiment

With reference to Fig. 1, first kind of example of the utility model, include left shell 1 and right shell body 6, on housing, be provided with stop surface E, F, H, L, between left and right two housings, be provided with moving armature 5, be provided with rotating shaft 7 on moving armature 5, moving armature 5 and rotating shaft 7 are connected into parts by key or other tightening member and rotate in housing around axial line O1, O2.On the mounting groove 10 that left shell is offered, be provided with two permanent magnets that volume is identical, magnetic substance is the same 4, (not shown at the mounting groove that right shell body is offered, its structure is identical with left shell) on also be provided with two permanent magnets that volume is identical, magnetic substance is the same 14, be respectively equipped with coil 2, coil 3 and coil 8, coil 9 at each permanent magnet 4 two ends, wherein coil 2 and coil 8 are made the closing line circle, and coil 3 and coil 9 are made switching winding.

With reference to Fig. 2, Fig. 3, be moving armature 5 under the acting in conjunction of the magnetic field force of the magnetic field force of hot-wire coil and permanent magnet, around the rotate separating brake position of closing position shown in Figure 2 or Fig. 3 of axial line O1, O2.

Its operation principle is as follows: when permanent magnet mechanism is in closing position and separating brake position respectively shown in Fig. 2,3,

closing coil

2,8 and switching winding 3,9 no currents pass through, and moving armature 5 is remained on the extreme position of combined floodgate or separating brake by the magnetic field force of permanent magnet 4 and permanent magnet 14.As shown in Figure 2, when permanent magnet mechanism is in closing position, when there is sub-gate signal the outside, when passing to the electric current of equidirectional promptly for switching winding 3,9, moving armature 5 under the magnetic field acting in conjunction that magnetic field that switching winding produces and

permanent magnet

4,14 produce, around axial line O1, O2 as clockwise direction rotatablely move stop surface E, the L place of housing.After the separating brake release, each position component as shown in Figure 3.At this moment, moving armature 5 is in the separating brake position reliably under the magnetic field force effect of permanent magnet 4 and permanent magnet 14.

Equally, as shown in Figure 3, when permanent magnet mechanism is in the separating brake position, when there is switching signal the outside, when passing to the electric current of equidirectional promptly for

closing coil

2,8, moving armature 5 is under the magnetic field acting in conjunction that magnetic field that closing coil produces and

permanent magnet

4,14 produce, around axial line O1, O2 do counterclockwise to rotatablely move stop surface F, the H place of housing.After feed motion finished, each position component as shown in Figure 2.At this moment, moving armature 5 is in closing position reliably under the magnetic field force effect of permanent magnet 4 and permanent magnet 14.

In the above-described embodiment, also can be with circle 2 and coil 8 as switching winding, coil 3 and coil 9 be as closing coil, and in this case, Fig. 2 is corresponding to the separating brake position, and Fig. 3 is corresponding to closing position, its operation principle is with previously described identical.

With reference to Fig. 4, four

permanent magnets

4,14 are contained in respectively in housing 1 and the housing 6 in twos, wherein between moving armature 5 and housing and the permanent magnet certain interval are arranged, and can make moving armature in motion smoothly in housing.

With reference to Fig. 5, be second kind of example of the present utility model, it is the improvement on Fig. 1 example basis, be that with Fig. 1 embodiment difference described two pairs of

permanent magnets

4,14 are embedded in respectively in the groove of offering moving armature 5 both sides 11, and constitute the parts of an integral body with rotating shaft 7, all the other permanent magnet mechanisms zero, the parts mounting means is identical with the example of Fig. 1.

With reference to Fig. 6, it is the third example of the present utility model, it is the improvement on Fig. 1 example basis, be on housing 1, to be provided with coil 2.1, coil 3.1, coil 8.1, coil 9.1 with Fig. 1 embodiment difference, and coil 2.1 (coil 8.1) and coil 3.1 (coil 9.1) lay respectively at the two ends of each permanent magnet 4.On housing 6, also be provided with coil 2.2, coil 3.2, coil 8.2, coil 9.2, and coil 2.2 (coil 8.2) and coil 3.2 (coil 9.2) lay respectively at the two ends of each permanent magnet 14.Wherein coil 2.1 and coil 2.2, coil 8.1 and coil 8.2 are made closing line circle (also can make switching winding), and coil 3.1, coil 3.2 and coil 9.1, coil 9.2 are made switching winding (also can make the closing line circle).All the other permanent magnet mechanisms zero, the parts mounting means is identical with the example of Fig. 1.

With reference to Fig. 7, be the 4th kind of example of the present utility model, it is the improvement on Fig. 6 example basis, be that with Fig. 6 embodiment difference described two pairs of

permanent magnets

4,14 are embedded in respectively in the groove of offering moving armature 5 both sides 11, and constitute the parts of an integral body with rotating shaft 7, all the other permanent magnet mechanisms zero, the parts mounting means is identical with the example of Fig. 6.

Second kind of the present utility model, the third, the operation principle of the 4th kind of example is all identical with first kind of example, just repeat no more here.

What should be understood that is: above-mentioned example is just to explanation of the present utility model, rather than to restriction of the present utility model, any innovation and creation that do not exceed in the utility model connotation scope all fall within the protection range of the present utility model.

Claims

1, a kind of bistable-state permanent magnet mechanism comprises left and right housing (1,6), it is characterized in that being provided with in the described left and right housing (1,6) moving armature (5), rotating shaft (7), permanent magnet (4,14), closing coil (2,8) and switching winding (3,9); Described left and right housing (1,6) is provided with combined floodgate stop surface (F, H) and separating brake stop surface (E, L); Described moving armature (5) is connected into parts with rotating shaft (7), turns to combined floodgate stop surface (F, H) to a direction when closing coil (2,8) is switched on, and turn to separating brake stop surface (E, L) to other direction when switching winding (3,9) is switched on; Described permanent magnet (4,14) makes moving armature (5) remain on combined floodgate stop surface (F, H) or separating brake stop surface (E, L) is located.

2, bistable-state permanent magnet mechanism as claimed in claim 1 is characterized in that described moving armature (5) both sides are equipped with a pair of permanent magnet (4,14).

3, bistable-state permanent magnet mechanism as claimed in claim 2 is characterized in that the volume of described every pair of permanent magnet (4,14) is identical with magnetic substance.

4, bistable-state permanent magnet mechanism as claimed in claim 3 is characterized in that the volume of described two pairs permanent magnet is also identical with magnetic substance.

5, bistable-state permanent magnet mechanism as claimed in claim 4 is characterized in that described two pairs of permanent magnets (4,14) are embedded in left and right housing (1,6) respectively and go up in the set mounting groove (10).

6, bistable-state permanent magnet mechanism as claimed in claim 4 is characterized in that described two pairs of permanent magnets (4,14) are embedded in moving armature (5) and go up in the set groove (11).

7,, it is characterized in that the two ends of the permanent magnet (4,14) of at least one side are provided with closing coil (2,8) and switching winding (3,9) as any one described bistable-state permanent magnet mechanism of claim 1-6.