KR102248495B1 - Permanent magnetic actuator using low magnetic force - Google Patents

Abstract

Disclosed in the present invention is a permanent magnet actuator using low magnetic force, which can be operated at low magnetic force by using the principle of the lever of a link. To this end, the disclosed permanent magnet actuator is operated to allow a second contact unit to be relatively moved with respect to a first contact unit such that the first and second contact units may be spaced apart from or come in contact with each other. In particular, the present invention comprises: a spacing maintenance unit which maintains the state in which the first contact unit and the second contact unit are spaced apart from each other in a state in which power is not applied; a contact maintenance unit which maintains the state in which the first contact unit and the second contact unit are in contact with each other in a state in which power is not applied; a first electromagnet which provides driving force by means of magnetic force, and moves the second contact unit spaced apart from the first contact unit in the direction in which the same may come in contact with the first contact unit; a second electromagnet which provides driving force by means of magnetic force, and allows the second contact unit which is in contact with the first contact unit to be spaced apart from the first contact unit; and a link unit which is disposed at each gap between the spacing maintenance unit, the contact maintenance unit, the first electromagnet and the second electromagnet to deliver driving force, and is installed to be mutually connected based on at least one fixing point which is fixed at a fixing location or functions as a rotation center, or at least one moving point which is installed to be rotatable and/or movable.

Description

Low-power permanent magnet actuator {PERMANENT MAGNETIC ACTUATOR USING LOW MAGNETIC FORCE}

The present invention relates to a permanent magnet actuator, and more particularly, to a low-power permanent magnet actuator (hereinafter referred to as'PMA') that can be driven with low-power using a lever principle of a link.

In general, PMA is an actuator that causes the mover to move linearly by the magnetic field of a permanent magnet and the force of the magnetic field excited from the coil. This PMA is used to operate circuit breakers and switchgear in the power system or actuators of various mechanical devices.

Conventional PMA has been disclosed in Patent Documents 1 and 2 below.

The PMA according to Patent Document 1 includes a fixed iron core, a mover, a permanent magnet, and first and second coils. This PMA has a structure in which the magnetic paths of the first and second coils are not sealed, so the leakage magnetic flux is large. This device is required to use an iron core with a high magnetic permeability using a silicon steel plate or the like, and a permanent magnet having a strong magnetic force such as neodymium. Therefore, since a current value applied to the first and second coils must be large to be driven, power consumption may be large when driving the PMA.

The PMA according to Patent Document 2 is configured to include a hollow cylindrical coil housing and a coil wound around the coil housing, and has an advantage of improved durability and manufacturing convenience of the coil. On the other hand, since it has a configuration that directly drives the PMA, power consumption for driving the PMA may still be large, like the PMA disclosed in Patent Document 1.

Registered Patent Publication 10-1328587 (2013. 11. 13.) Registered Patent Publication 10-1783561 (2017. 09. 29.)

The present invention has been invented in view of the above problems, and an object of the present invention is to provide a low-power permanent magnet actuator (PMA) having a structure capable of being driven with low-power by applying a lever principle.

In order to achieve the above object, the present invention relates to a permanent magnet actuator that drives the first and second contact portions to be spaced apart or in contact with each other by moving the second contact portion relative to the first contact portion. In a state, a distance maintaining unit for maintaining a state that the first contact unit and the second contact unit are spaced apart from each other; A contact holding unit configured to maintain a state in which the first contact unit and the second contact unit are in contact with each other when power is not applied; A first electromagnet that provides a driving force by magnetic force, and moves the second contact portion spaced apart from the first contact portion in a direction in contact with the first contact portion; A second electromagnet that provides a driving force by magnetic force, the second electromagnet separated from the first contact portion, the second contact portion in contact with the first contact portion; It is provided between each of the separation holding part, the contact holding part, the first electromagnet and the second electromagnet to transmit power, and at least one fixed point fixed at a fixed position or a rotation center, and rotation and/or It may include a link unit that is installed to be interconnected based on at least one moving point that is installed to be movable.

Here, the spacing maintenance part, an elastic bias part for maintaining a state spaced apart from the first contact part by an elastic force of the second contact part and the second contact part to maintain a state spaced apart from the first contact part by a magnetic force. It may include at least one of the permanent magnet parts.

In addition, the contact holding unit may include a permanent magnet unit that maintains a state in which the first and second contact units are in contact with each other by magnetic force.

In addition, in configuring the permanent magnet actuator according to the present invention, the fixing points include first and second fixing points respectively fixed to rotationally installed at predetermined positions, and the moving points are the first and second fixing points. Each of the points may include a first and a second moving point that rotates as a center of rotation, and a third moving point that reciprocates in connection with the movement of the first moving point.

In this case, the link unit includes: a first operating plate disposed to be movable with respect to the contact holding portion; A second operating plate disposed to be movable with respect to the second electromagnet; A first link installed to be rotatable about the first fixed point and connecting the first fixed point and the first moving point; A second link installed to be rotatable and movable between the first moving point and the third moving point; A third link installed to be reciprocally moved between the third moving point and the second contact portion; A fourth link installed between the first electromagnet and the first moving point, and moving the first moving point by an attractive force provided from the first electromagnet; A fifth link installed to be rotatable about the second fixed point and connecting the second fixed point and the second moving point; A sixth link connecting the first moving point and the second moving point; A seventh link connecting between the second moving point and the first operating plate; It may include an eighth link connecting between the second moving point and the second operating plate.

In addition, in configuring the permanent magnet actuator according to the present invention, the fixed points each include first to third fixed points installed at predetermined positions, and the moving points rotate with the first fixed point as a rotation center. The first and second moving points, a third moving point that rotates with the second fixed point as a rotation center, a fourth moving point that reciprocates in connection with the movement of the second moving point, and the first It may include a pressing point that is rotatably installed with the fixed point as a rotation center. Here, the link unit includes: a first operating plate installed to be rotatable with respect to the second fixed point and disposed to be movable with respect to the contact holding portion; A second operating plate disposed to be movable with respect to the second electromagnet; It is installed to be rotatable around the first fixing point, connecting between the first fixing point and the pressing point, and rotating the first fixing point by a repulsive force provided from the first electromagnet. A first link; A second link that connects between the first fixed point and the first moving point and is rotatably installed around the first fixed point; A third link installed to be movable between the first moving point and the third moving point; A fourth link connected between the second fixed point and the third moving point and installed to be rotatable around the second fixed point; A fifth link connecting between the third moving point and the second operating plate and moving the third moving point by an attractive force provided from the second electromagnet; A sixth link that connects between the first fixed point and the second moving point and is rotatably installed around the first fixed point; A seventh link movably installed between the second moving point and the fourth moving point; An eighth link that connects between the fourth moving point and the second operating plate and is installed to be able to rotate to a third fixed point may be included.

In the low-power permanent magnet actuator according to the present invention, the stroke distance of the first and second electromagnets that change the position between the contact and the spaced state is maximized by applying the structure of two three-fold links or a mixed three-fold link in configuring the link unit. It is possible to set it above the separation distance. Accordingly, the present invention can stably operate the PMA without deteriorating performance even if a ceramic having relatively weak magnetic force is applied with a magnet. Therefore, since the present invention does not use a rare earth magnet, it can be configured at a low cost.

Furthermore, the present invention has a structure in which an electromagnet driving current is applied only when a distance between the first and second contact portions and a contact state changes, and no external power is applied when the same state is maintained. Accordingly, there is an advantage that the PMA can be configured with low power.

In addition, since the present invention maintains a contact state by using a low-power permanent magnet, there is an advantage that manual opening is easy even with a small force in case of releasing the contact in an emergency.

The present invention will be described in detail by the following drawings, but since these drawings show embodiments of the present invention, the technical idea of the present invention is limited only to the drawings and should not be interpreted.
1 is a schematic plan view showing a low-power permanent magnet actuator according to a first embodiment of the present invention.
Each of FIGS. 2 and 3 is a conceptual diagram for explaining the operating principle of the low-power permanent magnet actuator according to the first embodiment, and FIG. 2 is a view showing a state in which the contacts are separated, and FIG. 3 is a state in which the contacts are in contact. This is the drawing shown.
4 is a schematic plan view showing a low-power permanent magnet actuator according to a second embodiment of the present invention.
Each of FIGS. 5 and 6 is a conceptual diagram for explaining the operating principle of the low-power permanent magnet actuator according to the second embodiment, and FIG. 2 is a view showing a state in which the contact points are separated, and FIG. 3 is a state in which the contact points are in contact. This is the drawing shown.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings. In the drawings, parts irrelevant to the description are omitted in order to clearly describe the present invention, and the same reference numerals will be used for the same or similar components throughout the specification.

1 is a schematic plan view showing a low-power permanent magnet actuator according to a first embodiment of the present invention, and FIGS. 2 and 3 are each a conceptual diagram for explaining the operating principle of the low-power permanent magnet actuator according to the first embodiment to be.

1 to 3, the low-power permanent magnet actuator (hereinafter referred to as'PMA') according to the first embodiment of the present invention is by moving the second contact portion 15 relative to the first contact portion 11 , The first and second contact portions 11 and 15 are driven to be spaced apart or in contact with each other. In addition, the PMA according to the present invention has a configuration such that the driving power can be applied only when the operating state of the second contact unit 15 changes from space to contact or from contact to space. That is, in the case of maintaining the separated state or the contact state, the configuration is configured to maintain the same state without separate power supply.

To this end, the low-power permanent magnet actuator according to the first embodiment of the present invention includes a separation holding part 20, a contact holding part 30, the first and second electromagnets 40 and 50, and a link unit 100. ).

The separation maintaining unit 20 maintains a state in which the first contact unit 11 and the second contact unit 15 are spaced apart from each other in a state in which power is not applied. The spacing maintenance part 20 may be configured as an elastic bias part so that the second contact part 15 is kept spaced apart from the first contact part 11 by an elastic force. Referring to FIG. 2, the elastic bias unit supports an elastic member 21 having one end fixed at a position C of a third link 173, which will be described later, and the other end of the elastic member 21. For 173), it may include an independently installed stopper 25. Here, the elastic member 21 may be composed of a compression spring, and the stopper 25 is positioned between the one position C and the second contact portion 15. Therefore, after the second contact part 15 is separated from the first contact part 11 by the second electromagnet 50, the third link 173 is moved by the elastic force of the compression spring even if power is not applied. It is elastically biased in the direction away from 11). Accordingly, the third link 173 may maintain a spaced state.

In the present embodiment, an elastic bias portion is shown as an example of the spacing holding portion 20, but the present invention is not limited thereto. That is, the spacing maintenance part 20 may be formed of a permanent magnet part (not shown) to maintain a state in which the second contact part 15 is separated from the first contact part 11 by magnetic force.

The contact holding part 30 maintains a state in which the first contact part 11 and the second contact part 15 are in contact with each other in a state in which power is not applied. To this end, the contact holding part 30 may include a permanent magnet part that maintains the first and second contact parts 11 and 15 in contact with each other by magnetic force. Since the present invention applies the link unit 100 having a three-section link structure as described later, it is possible to maintain a distance and maintain contact with a small force. Therefore, the permanent magnet constituting the permanent magnet portion can be composed of a low-cost ceramic magnet instead of an expensive rare earth magnet.

Each of the first and second electromagnets 40 and 50 provides a driving force by magnetic force, and when the position of the second contact unit 15 is changed, the power is turned on and the link unit 100 is driven. .

The first electromagnet 40 functions to move the second contact portion 15 spaced apart from the first contact portion 11 in a direction in contact with the first contact portion 11. To this end, the first electromagnet 40 may include a coil part 41 and a plunger 45. In addition, the first electromagnet 40 is installed on one side of the plunger 45 and may further include a plunger locking portion 47 connected to the end of the fourth link 174 to be described later. As shown in FIG. 2, the plunger locking portion 47 is positioned to be engaged with one side of the plunger 45 in a spaced state, that is, in an open state. Meanwhile, as shown in FIG. 3, in a contacted state, that is, in a closed state, it is positioned to be spaced apart by a predetermined stroke distance L1 from one side of the plunge 45. By providing the plunger locking portion 47 in this way, the moving distance of the fourth link 174 can be regulated within the stroke distance L1.

The second electromagnet 50 functions to separate the second contact portion 15 in contact with the first contact portion 11 from the first contact portion 11. That is, the second electromagnet 50 operates the link unit 100 by an attractive force acting on the second operating plate 155 as described later, so that the second contact part 15 is brought into the first contact part 11. ) Away from it. To this end, the second electromagnet 50 may include a coil part 51 and a plunger 55.

The link unit 100 serves to stably transmit power by being provided between each of the separation holding unit 20, the contact holding unit 30, the first electromagnet 40, and the second electromagnet 50. That is, the link unit 100 can be connected to each other based on at least one fixed point 110 that is fixed at a fixed position or becomes a center of rotation, and at least one moving point 130 that is installed to be rotated and/or movable. It is installed properly.

The fixing points 110 include first and second fixing points 111 and 115 respectively installed to be fixed or rotatable at a predetermined position. In addition, the moving point 130 includes first and second moving points 131 and 133 that rotate with each of the first and second fixed points 111 and 115 as a rotation center, and the first moving point. It includes a third moving point 135 which is interlocked with the movement of the point 131 and reciprocates in the moving direction of the second contact part 15.

The link unit 100 is disposed to be movable for each of the contact holding unit 30 and the second electromagnet 50, and is connected to the seventh link 177 and the eighth link 178, which will be described later. It includes a second operating plate 151, 155, and a plurality of links constituting a double-triple link.

The first operating plate 151 is at least partially spaced apart from the permanent magnet part 30 or moved so as to be in contact. That is, the first operating plate 151 is installed to be movable in a hinge-coupled state with respect to the permanent magnet 30, as shown in FIG. 1, or as shown in FIGS. 2 and 3, the entire It can be installed movably. The second operating plate 155 is at least partially spaced apart from the second electromagnet 50 or moved to be in contact. The second operation plate 155 is installed to be movable in a hinge-coupled state with respect to the second electromagnet 50, as shown in FIG. 1, or, as shown in FIGS. 2 and 3, the entire movement It can be installed where possible.

By providing the first and second operating plates 151 and 155 in this way, by driving the second moving point 133 with the attraction of the permanent magnet 30 or the attraction of the second electromagnet 50, The position of the second contact part 15 may be finally determined.

The plurality of links may include first to eighth links 171, ..., 178.

The first link 171 is rotatably installed around the first fixed point 111 and connects the first fixed point 111 and the first moving point 131. The second link 172 is installed to be rotatable and movable between the first moving point 131 and the third moving point 135. The third link 173 is installed to be reciprocally moved between the third moving point 135 and the second contact part 15. In addition, the fourth link 174 is installed between the first electromagnet 40 and the first moving point 131, and the first moving point 131 is provided by the attractive force provided from the first electromagnet 40. ) To move.

Here, the first, second and fourth links 171, 172, and 174 are installed to be movable around the first moving point 131, and constitute one three-fold link. By configuring in this way, even if the fourth link 174 moves by the above-described stroke distance (L1), the third link 173 is the maximum distance (L2) between the first contact portion 11 and the second contact portion 15 The range of movement can be adjusted within the range. Here, when looking at the relationship between the moving distance L1 and L2, the condition of L1 ≥ 3·L2 may be satisfied. That is, by making L1 longer than L2 by three times or more, even if the magnetic force of the first electromagnet 40 is weakened to 1/3 or less, it can operate with substantially the same force.

In this way, by setting the moving distance ratio differently as in the above-described condition range through the link unit 100, even if the first electromagnet 40 having a small magnetic strength is employed, the first and second contact portions 11 and 15 are stably used. ) Between the contact and the separation can be controlled.

The fifth link 175 is installed to be rotatable around the second fixed point 115 and connects the second fixed point 115 and the second moving point 133. The sixth link 176 connects the first moving point 131 and the second moving point 133, and the seventh link 177 is located between the second moving point 133 and the first operating plate 151. And, the eighth link 178 connects between the second moving point 133 and the second operating plate 155. That is, the fifth to eighth links 175, ..., 178 are installed to be movable around the second moving point 133, constitute another three-fold link, and the second contact part 15 The first to third moving points 131, 133, and 135 are moved in a direction separated from the first contact part 11. By configuring in this way, even if the eighth link 178 moves by the above-described stroke distance L3, the third link 173 is the maximum distance L2 between the first contact portion 11 and the second contact portion 15. The range of movement can be adjusted within the range. Here, since the moving distance L3 moves a larger distance than L2, even if the magnetic force of the second electromagnet 50 is weakened compared to the configuration in which the link is not used as much as corresponding to the moving distance ratio, it can operate with substantially the same force.

As described above, by applying two three-fold link structures in configuring the link unit 100, the stroke distance of the first and second electromagnets for changing the position between the contact and the spaced state is set to be greater than or equal to the maximum separation distance. It is possible. Therefore, even when the first and second electromagnets 40 and 50 having relatively weak magnetic force are applied, the PMA can be stably operated without deteriorating performance.

4 is a schematic plan view showing a low-power permanent magnet actuator according to a second embodiment of the present invention, and FIGS. 5 and 6 are each a conceptual diagram for explaining the operating principle of the low-power permanent magnet actuator according to the second embodiment to be.

4 to 6, the low-power PMA according to the second embodiment of the present invention moves the second contact portion 215 relative to the first contact portion 211, so that the first and second contact portions 211 ) 215 is driven to be spaced apart or in contact with each other. In addition, the PMA according to the present invention has a configuration such that the driving power can be applied only when the operating state of the second contact unit 15 changes from space to contact or from contact to space. That is, in the case of maintaining the separated state or the contact state, the configuration is configured to maintain the same state without separate power supply.

To this end, the low-power PMA according to the second embodiment of the present invention includes a separation holding unit 220, a contact holding unit 230, the first and second electromagnets 230 and 240, and the link unit 300. Includes.

The separation maintaining unit 220 maintains a state in which the first contact unit 211 and the second contact unit 215 are spaced apart from each other in a state in which power is not applied. The spacing maintenance part 220 may be configured as an elastic bias part so that the second contact part 215 is kept spaced apart from the first contact part 211 by an elastic force. Referring to FIG. 5, the elastic bias unit is located at one position of the eighth link 378 to be described later (when the third fixing point 315 is the rotational center, the position opposite to the position of the second contact unit 215). It may include a fixed elastic member 221. Here, the elastic member 221 may be composed of a compression spring. Therefore, after the second contact portion 215 is separated from the first contact portion 211 by the second electromagnet 250, the state can be maintained without applying power. That is, due to the elastic force of the compression spring, the sixth link 376 is elastically biased in a rotational direction away from the first contact portion 211 around the third fixing point 315. Accordingly, the second contact portion 215 may maintain a spaced state with respect to the first contact portion 211.

In the second embodiment of the present invention, an elastic bias portion is shown as an example of the spaced portion maintaining portion 220, but the present invention is not limited thereto. That is, the spacing maintenance part 220 may be formed of a permanent magnet part (not shown) to maintain a state in which the second contact part 215 is separated from the first contact part 211 by magnetic force.

The contact holding part 230 maintains a state in which the first contact part 211 and the second contact part 215 are in contact with each other in a state in which power is not applied. To this end, the contact holding unit 230 may include a permanent magnet unit that maintains a state in which the first and second contact units 211 and 215 are in contact with each other by magnetic force. In the present invention, since the link unit 300 having a mixed three-fold link structure is applied as described later, it is possible to maintain a distance and maintain contact with a small force. Therefore, the permanent magnet constituting the permanent magnet portion can be composed of a low-cost ceramic magnet instead of an expensive rare earth magnet.

Each of the first and second electromagnets 240 and 250 provides a driving force by magnetic force, and when the position of the second contact unit 215 is changed, the power is turned on and the link unit 300 is driven. .

The first electromagnet 240 functions to move the second contact portion 215 spaced apart from the first contact portion 211 in a direction in contact with the first contact portion 211. To this end, the first electromagnet 240 may include a coil unit 241 and a plunger 245. In addition, the first electromagnet 240 is installed on one side of the plunger 245 and may further include a push rod 249 for pressing a pressing point 339 to be described later. Here, the push rod 249 operates the link unit 300 while moving in the direction of the pressing point 339 when the state is converted from a spaced state to a contact state, and after the operation is completed, it can be moved to its original position and positioned. have. In this case, the changed position of the link unit 300 is maintained by the contact holding part 230.

The second electromagnet 250 functions to separate the second contact portion 215 in contact with the first contact portion 211 from the first contact portion 211. That is, the second electromagnet 250 operates the link unit 300 by an attractive force acting on the second operating plate 355 as described later, so that the second contact portion 215 is brought into the first contact portion 211 ) Away from it. To this end, the second electromagnet 250 may include a coil unit 251 and a plunger 255.

The link unit 300 is provided between each of the separation maintaining unit 220, the contact maintaining unit 230, the first electromagnet 240 and the second electromagnet 250 and serves to stably transmit power. That is, the link unit 300 may be connected to each other based on at least one fixed point 310 that is fixed at a fixed position or becomes a rotation center, and at least one moving point 330 installed to be rotated and/or movable. It is installed properly.

The fixing points 310 include first to third fixing points 311, 313, 315 and pressing points 339, which are installed to be fixed or rotatable at a predetermined position, respectively. And the moving point 330 includes first to fourth moving points 331, ..., 337. The first and second moving points 331 and 333 rotate with the first fixed point 311 as a center of rotation. The third moving point 335 rotates with the second fixed point 313 as a center of rotation, and the fourth moving point 337 reciprocates in connection with the movement of the second moving point 333. In addition, the pressing point 339 is installed so as to be rotatable with the first fixing point 311 as a rotational center.

The link unit 300 includes first and second operating plates 351 and 355 disposed to be movable for each of the contact holding unit 30 and the second electromagnet 50, and a plurality of members constituting a mixed three-fold link. Includes a link of.

The first operating plate 351 is at least partially spaced apart from the permanent magnet unit 230 or is moved to be in contact. That is, the second operating plate 351 may be installed to be movable while being hinged to the permanent magnet unit 230. The second operation plate 355 is at least partially separated from the second electromagnet 250 or is moved to be in contact. The second operating plate 355 is installed to be movable in a hinge-coupled state with respect to the second electromagnet 250, as shown in FIG. 4, or, as shown in FIGS. 5 and 6, the entire movement It can be installed where possible.

In this way, the first and second operating plates 351 and 355 are provided, and the first and third moving points 331 and 3 are operated by the permanent magnet 230 or the second electromagnet 250. By rotating the first fixed point 311 through 335, the position of the second contact part 215 may be finally determined.

The plurality of links may include first to eighth links 371, ..., 378.

The first link 371 connects between the first fixing point 311 and the pressing point 339, and the first fixing point 311 by a repulsive force provided from the first electromagnet 240 ) To rotate.

The second link 372 connects between the first fixed point 311 and the first moving point 331 and is installed to be rotatable around the first fixed point 311. The third link 373 may be installed to be movable between the first moving point 331 and the third moving point 335. The fourth link 374 connects between the second fixed point 313 and the third moving point 335 and is installed to be rotatable around the second fixed point 313. The fourth link 374 suppresses rotation of the third moving point 335 when an attractive force acts between the contact holding part 230 and the first operating plate 351. The fifth link 375 connects between the third moving point 335 and the second operating plate 355, and the third moving point 335 is provided by the attractive force provided by the second electromagnet 250. Move.

Here, the second to fifth links 372, ..., 375 constitute an independent three-fold link.

By configuring in this way, the moving distance of the second operating plate 355 can be made larger than the maximum distance between the first contact portion 211 and the second contact portion 215. Accordingly, even if the magnetic force of the second electromagnet 250 is weakened as compared to a configuration in which a link is not used as much as corresponding to the moving distance ratio, it can operate with substantially the same force.

In addition, the sixth link 376 connects between the first fixed point 311 and the second moving point 333 and is installed to be rotatable around the first fixed point 311. The seventh link 377 is installed to be movable between the second moving point 333 and the fourth moving point 337. In addition, the eighth link 378 connects between the fourth moving point 337 and the second operating plate 215 and is installed so as to be able to rotate around the third fixed point 315.

Here, the sixth to eighth links 376, 377, and 378 have an independent three-fold link structure, and the repulsive force by the first electromagnet 240 and the attraction force by the second electromagnet 250 are By selectively acting, it is possible to reciprocate the second contact portion 215.

As described above, by applying the independently arranged mixed three-fold link structure in configuring the link unit 300, the stroke distance of the first and second electromagnets that change the position between the contact and the spaced state is greater than the maximum distance. It is possible to set it to.

In addition, since the plunge 247 of the first electromagnet 240 is not constrained to the link structure, a sufficient blocking speed can be secured when spaced apart.

In addition, since the contact state is maintained by using a low-power permanent magnet, there is an advantage that manual opening is easy even with a small force when the contact is to be released in an emergency.

The above-described embodiments are merely exemplary, and various modifications and equivalent other embodiments are possible from those of ordinary skill in the art to which the present invention pertains. Therefore, the true technical protection scope of the present invention should be determined by the technical spirit of the invention described in the claims.

11, 211: first contact portion 15, 215: second contact portion
20, 220: separation maintenance part 30, 230: contact maintenance part
40, 240: first electromagnet 50, 250: second electromagnet
100, 300: link unit 110, 310: fixed point
130, 330: moving point 151, 351: first operating plate
155, 355: second operating plate
171,... ,178: first to eighth links
371,... ,378: first to eighth links

Claims (5)

In the permanent magnet actuator for driving the first and second contact portions to be spaced apart or in contact with each other by moving the second contact portion relative to the first contact portion,
A separation maintaining unit configured to maintain the first contact unit and the second contact unit spaced apart from each other in a state in which power is not applied;
A contact holding unit configured to maintain a state in which the first contact unit and the second contact unit are in contact with each other when power is not applied;
A first electromagnet that provides a driving force by magnetic force, and moves the second contact portion spaced apart from the first contact portion in a direction in contact with the first contact portion;
A second electromagnet that provides a driving force by magnetic force, the second electromagnet separated from the first contact portion, the second contact portion in contact with the first contact portion;
It is provided between each of the spacing holding part, the contact holding part, the first electromagnet and the second electromagnet to transmit power, and at least one fixed point that is fixed at a fixed position or becomes a rotation center, and rotates and/or It includes a link unit that is installed to be interconnected based on at least one moving point that is installed to be movable,
The fixing points each include first and second fixing points fixed or rotatably installed at a predetermined position,
The moving point includes a first and a second moving point that rotates with each of the first and second fixed points as a rotation center, and a third moving point that reciprocates in connection with the movement of the first moving point. And
The link unit,
A first operating plate disposed to be movable with respect to the contact holding part;
A second operating plate disposed to be movable with respect to the second electromagnet;
A first link installed to be rotatable about the first fixed point and connecting the first fixed point and the first moving point;
A second link installed to be rotatable and movable between the first moving point and the third moving point;
A third link installed to be reciprocally moved between the third moving point and the second contact portion;
A fourth link installed between the first electromagnet and the first moving point, and moving the first moving point by an attractive force provided from the first electromagnet;
A fifth link installed to be rotatable about the second fixed point and connecting the second fixed point and the second moving point;
A sixth link connecting the first moving point and the second moving point;
A seventh link connecting between the second moving point and the first operating plate;
A permanent magnet actuator comprising an eighth link connecting between the second moving point and the second operating plate. The method of claim 1,
The spacing maintenance part,
At least one of an elastic biasing unit configured to maintain a state spaced apart from the first contact unit by an elastic force of the second contact unit, and a permanent magnet unit configured to maintain a state spaced apart from the first contact unit by a magnetic force. A permanent magnet actuator comprising one. The method of claim 1,
The contact holding part,
A permanent magnet actuator comprising: a permanent magnet portion configured to maintain a state in which the first and second contact portions are in contact with each other by magnetic force. delete In the permanent magnet actuator for driving the first and second contact portions to be spaced apart or in contact with each other by moving the second contact portion relative to the first contact portion,
A separation maintaining unit configured to maintain the first contact unit and the second contact unit spaced apart from each other in a state in which power is not applied;
A contact holding unit configured to maintain a state in which the first contact unit and the second contact unit are in contact with each other when power is not applied;
A first electromagnet that provides a driving force by magnetic force, and moves the second contact portion spaced apart from the first contact portion in a direction in contact with the first contact portion;
A second electromagnet that provides a driving force by magnetic force, the second electromagnet separated from the first contact portion, the second contact portion in contact with the first contact portion;
It is provided between each of the spacing holding part, the contact holding part, the first electromagnet and the second electromagnet to transmit power, and at least one fixed point that is fixed at a fixed position or becomes a rotation center, and rotates and/or It includes a link unit that is installed to be interconnected based on at least one moving point that is installed to be movable,
The fixing points include first to third fixing points respectively installed at predetermined positions,
The moving point is a first and second moving point that rotates with the first fixed point as a rotation center, a third moving point that rotates with the second fixed point as a rotation center, and the second moving point. And a fourth moving point interlocked with the movement and reciprocating, and a pressing point that is rotatably installed with the first fixed point as a rotational center,
The link unit,
A first operating plate installed to be rotatable with respect to the second fixed point and disposed to be movable with respect to the contact holding part;
A second operating plate disposed to be movable with respect to the second electromagnet;
It is installed to be rotatable around the first fixing point, connecting between the first fixing point and the pressing point, and rotating the first fixing point by a repulsive force provided from the first electromagnet. A first link;
A second link connecting between the first fixed point and the first moving point and rotatably installed around the first fixed point;
A third link installed to be movable between the first moving point and the third moving point;
A fourth link connected between the second fixed point and the third moving point and installed to be rotatable around the second fixed point;
A fifth link connecting between the third moving point and the second operating plate and moving the third moving point by an attractive force provided from the second electromagnet;
A sixth link that connects between the first fixed point and the second moving point and is rotatably installed around the first fixed point;
A seventh link movably installed between the second moving point and the fourth moving point;
A permanent magnet actuator comprising an eighth link that connects between the fourth moving point and the second operating plate, and is installed so as to be able to rotate around the third fixed point.

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