JP2007251118A - Actuator - Google Patents

Abstract

Response of an opening / closing operation of a valve or the like driven by an actuator is improved.
An actuator 1 includes a first pole 10, a permanent magnet 30 disposed therein, a second pole 11, a third magnet 12, a coil 50, and a movable member 40. is doing. When a current is applied to the coil 50 in a predetermined direction, the movable member 40 has a counterclockwise thrust acting between the protrusion 46 and the tip surfaces 16 and 17 of the first pole 10, and a first 3 is rotated counterclockwise by a counterclockwise suction force acting between the tip surface 19 of the third pole 12 and the right end of the movable member 40. On the other hand, when a current is applied to the coil 50 in a direction opposite to the predetermined direction, the movable member 40 causes the thrust in the clockwise direction to act between the protrusion 46 and the tip surfaces 15 and 16 of the first pole 10. And it rotates clockwise by the attraction | suction force of the clockwise direction which acts between the front end surface 18 of the 2nd pole 11, and the left end part of the movable member 40. As shown in FIG.
[Selection] Figure 2

Description

  The present invention relates to an actuator used for realizing a drive mechanism of a device that requires a reciprocating motion.

For example, an electromagnetic drive mechanism that drives an intake valve that opens and closes an intake port of an engine includes an armature chair connected to the intake valve, a valve closing electromagnet on the upper side of the armature chair, and an armchair on the lower side of the armature chair for closing the valve. One having an electromagnet and a valve opening electromagnet is known (for example, see Patent Document 1). In this electromagnetic drive mechanism, when the electromagnetic coil of the valve opening electromagnet is energized, the armature is lowered by being attracted by the valve opening electromagnet, so that the intake valve is opened. On the other hand, when the energization of the valve opening electromagnet is cut off and the electromagnetic coil of the valve closing electromagnet is energized, the armature is raised by being attracted by the valve closing electromagnet, so that the intake valve is closed. In this manner, the energization of the valve closing electromagnet and the energization of the valve opening electromagnet are alternately repeated, whereby the intake valve is opened and closed.
JP 2000-65232 A (FIG. 1)

  However, when the electromagnetic coil of each electromagnet is energized, the attractive force that the electromagnet attracts the armature becomes smaller as the distance between the electromagnet and the armchair becomes larger. In other words, for example, when the intake valve is changed from the closed state to the open state, the opening electromagnet and the armature are largely separated from each other. The acceleration in the direction of lowering cannot be sufficiently obtained. Therefore, it is very difficult to quickly change the intake valve to the valve open state. As described above, since the opening / closing operation of the intake valve (including reversal of the moving direction of the armature) cannot be performed rapidly, the response speed of the opening / closing operation of the intake valve is lowered. As a result, there arises a problem that the opening / closing operation of the intake valve cannot be properly controlled.

  Accordingly, an object of the present invention is to provide an actuator that can improve the responsiveness of an opening / closing operation of a valve or the like.

Means for Solving the Problems and Effects of the Invention

  The actuator according to the present invention is arranged in the central portion of a stator composed of three poles, and includes a first electromagnet pole that has a coil and generates magnetic flux, and one pole of the stator. A pole of a second electromagnet that does not have a single pole of the stator, and is disposed on the opposite side of the pole of the second electromagnet with respect to the pole of the first electromagnet and has a coil. A movable member that is rotatably supported by a pole of the third electromagnet that is not provided, an end face of the protruding portion that faces the first magnetic pole surface of the pole of the first electromagnet, and the first electromagnet A permanent magnet arranged to divide the pole of the first electromagnet into a pole-side portion of the second electromagnet and a pole-side portion of the third electromagnet. And energization control so that the direction of the current flowing in the coil of the pole of the first electromagnet changes Thus, a magnetic flux passing through the movable member is generated by a magnetic flux generated by energization of the poles of the first to third electromagnets and a magnetic flux of the permanent magnet, and the movable member is rotationally driven. is there.

  According to this configuration, when energization control is performed so that the direction of the current flowing in the coil is changed, a magnetic flux passing through the movable member is generated, and the movable member is rotated by thrust and attractive force. Therefore, compared with the case where the movable member is rotated only by the suction force, the rotation direction of the movable member can be changed quickly, and the responsiveness of the opening / closing operation of the valve or the like driven by the actuator can be improved. .

  The actuator of the present invention is arranged in the central part of a stator composed of three poles, and is a first electromagnet pole that does not have a coil and one pole of the stator that has a coil. A pole of a second electromagnet that generates a cage magnetic flux and one pole of the stator, and is disposed on the opposite side of the pole of the second electromagnet with respect to the pole of the first electromagnet, and has a coil. And a movable member that is provided with a third electromagnet pole for generating magnetic flux, and an end face of a projection facing the first magnetic pole face of the first electromagnet pole, and is rotatably supported; Built into the pole of the first electromagnet and arranged to divide the pole of the first electromagnet into a pole-side portion of the second electromagnet and a pole-side portion of the third electromagnet A coil of a pole of the second electromagnet and a coil of a pole of the third electromagnet By conducting energization control so that the direction of the flowing current changes, a magnetic flux passing through the movable member is generated by a magnetic flux generated by energization of the poles of the first to third electromagnets and a magnetic flux of the permanent magnet, and the movable member is It is characterized by being driven to rotate.

  According to this configuration, when energization control is performed so that the direction of the current flowing in the coil is changed, a magnetic flux passing through the movable member is generated, and the movable member is rotated by thrust and attractive force. Therefore, compared with the case where the movable member is rotated only by the suction force, the rotation direction of the movable member can be changed quickly, and the responsiveness of the opening / closing operation of the valve or the like driven by the actuator can be improved. .

  In the actuator of the present invention, a second magnetic pole surface that is incorporated in the pole of the second electromagnet and that contacts the end of the movable member on the pole side of the second electromagnet when the movable member is rotatable. A second permanent magnet having a pole of the third electromagnet, and an end of the movable member on the pole side of the third electromagnet in contact with each other when the movable member is rotatable. And a third permanent magnet having a third magnetic pole surface having a polarity different from that of the magnetic pole surface.

  According to this configuration, even when no current flows through the coil, the state of the movable member can be maintained by the magnetic force of the permanent magnet.

  In the actuator of the present invention, the first magnetic pole surface of the pole of the first electromagnet may be formed by a substantially dovetail-shaped recess.

  According to this configuration, since the suction force for rotating the movable member increases, the rotation direction of the movable member can be changed more quickly, and the responsiveness of the opening / closing operation of a valve or the like driven by the actuator can be further improved. Can do.

  The actuator of the present invention has a coil disposed in the central portion of a stator composed of two poles, and has a substantially dovetail-shaped magnetic flux generating portion that generates magnetic flux, and one pole of the magnetic flux generating portion. A pole of a first electromagnet having a first magnetic pole face formed with a substantially dovetail-shaped recess, and a pole opposite to the pole of the first electromagnet of the magnetic flux generating portion, and having a substantially dovetail-shaped recess A second electromagnet pole having a second magnetic pole face formed with a magnetic pole face incorporated in the first electromagnet pole and parallel or inclined to the axis of the first electromagnet pole. A first permanent magnet, a second permanent magnet incorporated in the pole of the second electromagnet, and having a magnetic pole face parallel to or inclined with respect to the axis of the pole of the second electromagnet; Protrusions that face the two magnetic pole faces are provided. A movable member that is rotatably supported, and by controlling energization so that the direction of the current flowing in the coil of the magnetic flux generation portion changes, the magnetic flux generated by energization of the poles of the first and second electromagnets and A magnetic flux passing through the movable member is generated by the magnetic fluxes of the first and second permanent magnets, and the movable member is rotationally driven.

  According to this configuration, when energization control is performed so that the direction of the current flowing in the coil is changed, a magnetic flux passing through the movable member is generated, and the movable member is rotated by thrust and attractive force. Therefore, compared with the case where the movable member is rotated only by the suction force, the rotation direction of the movable member can be changed quickly, and the responsiveness of the opening / closing operation of the valve or the like driven by the actuator can be improved. .

  The actuator according to the present invention is arranged in the central portion of a stator composed of three poles, and includes a first electromagnet pole that has a coil and generates magnetic flux, and one pole of the stator. A pole of a second electromagnet that does not have a single pole of the stator, and is disposed on the opposite side of the pole of the second electromagnet with respect to the pole of the first electromagnet and has a coil. A movable member that is rotatably supported by a pole of the third electromagnet that is not provided, an end face of the protruding portion that faces the first magnetic pole surface of the pole of the first electromagnet, and the first electromagnet A first magnetic pole surface of the first electromagnet, and a pole-side portion of the second electromagnet and a pole-side portion of the third electromagnet. And a permanent magnet disposed on the N pole and the S pole so as to be divided at the center, and the pole of the first electromagnet By conducting energization control so that the direction of the current flowing through the coil changes, a magnetic flux passing through the movable member is generated by the magnetic flux generated by energizing the poles of the first to third electromagnets and the magnetic flux of the permanent magnet, and the movable The member is rotationally driven.

  According to this configuration, when energization control is performed so that the direction of the current flowing in the coil is changed, a magnetic flux passing through the movable member is generated, and the movable member is rotated by thrust and attractive force. Therefore, compared with the case where the movable member is rotated only by the suction force, the rotation direction of the movable member can be changed quickly, and the responsiveness of the opening / closing operation of the valve or the like driven by the actuator can be improved. .

  The actuator of the present invention is arranged in the central part of a stator composed of three poles, and is a first electromagnet pole that does not have a coil and one pole of the stator that has a coil. A pole of a second electromagnet that generates a cage magnetic flux and one pole of the stator, and is disposed on the opposite side of the pole of the second electromagnet with respect to the pole of the first electromagnet, and has a coil. And a movable member that is provided with a third electromagnet pole for generating magnetic flux, and an end face of a projection facing the first magnetic pole face of the first electromagnet pole, and is rotatably supported; It is incorporated in the first magnetic pole face of the pole of the first electromagnet, and the pole face of the pole of the first electromagnet is divided into the pole-side part of the second electromagnet and the pole-side part of the third electromagnet. And a permanent magnet disposed on the N pole and the S pole so as to be divided at the center, and the second electromagnetic By controlling energization so that the direction of the current flowing through the coil of the first electrode and the coil of the third electromagnet changes, the magnetic flux generated by the energization of the poles of the first to third electromagnets and the magnetic flux of the permanent magnet A magnetic flux passing through the movable member is generated, and the movable member is rotationally driven.

  According to this configuration, when energization control is performed so that the direction of the current flowing in the coil is changed, a magnetic flux passing through the movable member is generated, and the movable member is rotated by thrust and attractive force. Therefore, compared with the case where the movable member is rotated only by the suction force, the rotation direction of the movable member can be changed quickly, and the responsiveness of the opening / closing operation of the valve or the like driven by the actuator can be improved. .

  In the actuator of the present invention, a second magnetic pole surface that is incorporated in the pole of the second electromagnet and that contacts the end of the movable member on the pole side of the second electromagnet when the movable member is rotatable. A second permanent magnet having a pole of the third electromagnet, and an end of the movable member on the pole side of the third electromagnet in contact with each other when the movable member is rotatable. And a third permanent magnet having a third magnetic pole surface having a different polarity from that of the magnetic pole surface.

  According to this configuration, even when no current flows through the coil, the state of the movable member can be maintained by the magnetic force of the permanent magnet.

  The actuator according to the present invention is arranged in the central part of a stator composed of three poles, and includes a first electromagnet pole that has a coil and generates magnetic flux, and one pole of the stator, A pole of the second electromagnet that does not have a pole and one pole of the stator, and is disposed on the opposite side of the pole of the second electromagnet with respect to the pole of the first electromagnet and has no coil A pole of the third electromagnet and an end face of the projecting portion facing the first magnetic pole face of the pole of the first electromagnet are provided and are rotatably supported and incorporated in the pole of the first electromagnet. And the first electromagnet includes a permanent magnet arranged to divide the pole of the first electromagnet into a pole-side portion of the second electromagnet and a pole-side portion of the third electromagnet. By controlling the energization so that the direction of the current flowing through the coil of the first electrode changes, the first to third electromagnets The magnetic flux passing through the movable member is generated by the magnetic flux generated by the energization of the magnetic field and the magnetic flux of the permanent magnet, and the movable member is rotationally driven, and the second member is moved to the vicinity of the movable region at the end of the movable member when the movable member is rotationally driven. The end portions of the electromagnet poles and the third electromagnet poles are provided so as to extend.

  According to this configuration, when energization control is performed so that the direction of the current flowing in the coil is changed, a magnetic flux passing through the movable member is generated, and the movable member is rotated by thrust and attractive force. Therefore, compared with the case where the movable member is rotated only by the suction force, the rotation direction of the movable member can be changed quickly, and the responsiveness of the opening / closing operation of the valve or the like driven by the actuator can be improved. . Moreover, since the tip part of the pole of the second electromagnet and the tip part of the pole of the third electromagnet are provided to extend with respect to the movable region of the movable member, each tip part and the movable member Since the magnetic resistance of the gap portion between them can be reduced, the torque at the time of current switching increases, the direction of the movable part can be easily switched, and the responsiveness can be improved.

  The tip of the pole of the second electromagnet has a first surface and a second surface forming an L-shape, and the tip of the pole of the third electromagnet is an inverted L-shape that is line-symmetric with the L-shape. The movable member has a third surface and a fourth surface, and the movable member is pivotally supported at the center, and performs a swinging motion that repeats the first state and the second state. The first surface is a movable member. Is provided in contact with the upper end surface of the movable member when the movable member is in the first state, and the third surface is provided in contact with the upper end surface of the movable member when the movable member is in the second state. The surface is provided to extend to the vicinity of the upper end surface of the movable member that has been in contact with the first surface when the movable member is in the second state, and the fourth surface is the movable member in the first state. In this case, it may be provided to extend to the vicinity of the upper end surface of the movable member that has been in contact with the third surface.

  According to this configuration, when energization control is performed so that the direction of the current flowing through the coil is changed, a magnetic flux passing through the movable member is generated, and the movable member is changed between the first state and the second state by the thrust and the attraction force. Swing repeatedly. Further, at the time of transition from the first state to the second state and at the time of transition from the second state to the first state, the second surface or the fourth surface extends to the vicinity of the end of the movable member. Since it is formed, it is easy to generate magnetic flux of the movable member, it is easy to switch the direction of the thrust and attractive force of the movable member, the torque when switching the current of the opening and closing operation can be increased, and the responsiveness is further improved Can be achieved.

  Hereinafter, preferred embodiments of the present invention will be described with reference to the drawings. FIG. 1 is a diagram showing a schematic configuration of an actuator according to a first embodiment of the present invention.

  1 includes a first electromagnet pole 10 (hereinafter referred to as a first pole 10), a second electromagnet pole 11 (hereinafter referred to as a second pole 11), and a third electromagnet pole 10. It has an iron core 2 that is a stator composed of an electromagnet pole 12 (hereinafter referred to as a third pole 12) and connecting portions 14 and 15 for connecting them. The first to third poles 10 to 12 are rod-shaped members extending in one direction (vertical direction in FIG. 1) and are opposed to each other with a predetermined interval. The third pole 12 is disposed on the opposite side of the second pole 11 with respect to the first pole 10. The upper ends of the first pole 10 and the second pole 11 are connected to each other via a connecting portion 14, and the upper ends of the first pole 10 and the third pole 12 are connected to each other. The iron core 2 has a substantially inverted W-shaped cross section.

  A permanent magnet 30 extending in the vertical direction is disposed at the center position of the first pole 10. The permanent magnet 30 is a plate-like member, and one end surface is an N pole and the other end surface is an S pole. The permanent magnet 30 is arranged so as to divide the first pole 10 into a part on the second pole 11 side and a part on the third pole 12 side. In the present embodiment, the surface that becomes the N pole of the permanent magnet 30 is on the left side (side adjacent to the second pole 11), and the surface that becomes the S pole of the permanent magnet 30 is on the right side (to the third pole 12). It is arranged so as to be on the adjacent side. Further, the lower end portion of the permanent magnet 30 coincides with the front end surface of the first pole 10.

  Here, the tip surface (tip surfaces 16 and 17 described later) of the first pole 10 has an arc shape that is recessed upward, and this tip surface becomes a magnetic pole surface. The tip surface 18 of the second pole 11 and the tip surface 19 of the third pole 12 are inclined from the outside toward the inside and below, and these tip surfaces serve as magnetic pole surfaces. For this reason, when the movable member 40 described later rotates, the movable member 40 and the distal end surface 18 of the second pole 11 and the distal end surface 19 of the third pole 12 can come into contact with no gap.

  And since the permanent magnet 30 is arranged in the above-described direction, the portion on the left side of the permanent magnet 30 on the front end surface of the first pole 10 (hereinafter referred to as the front end surface 16) has the polarity of the N pole, The portion on the right side of the permanent magnet 30 on the front end surface (hereinafter referred to as the front end surface 17) has the polarity of the south pole. That is, the first pole 10 has an N-pole magnetic pole face and an S-pole magnetic pole face. The tip surface 18 of the second pole 11 has an N-pole polarity, and the tip surface 19 of the third pole 12 has an S-pole polarity.

  A movable member 40 that can rotate about the rotation shaft 41 is disposed in a region below the first pole 10. The movable member 40 includes an oscillating portion 45 having a length substantially the same as the distance between the distal end surface 18 of the second pole 11 and the distal end surface 19 of the third pole 12, and is perpendicular to the center position of the oscillating portion 45. And a protrusion 46 protruding upward. The movable member 40 is supported by the rotation shaft 41 at the center position of the swinging portion 45. The rotation shaft 41 extends in the horizontal direction (in the drawing, the depth direction in the drawing) below the axial center position of the first pole 10. Therefore, the movable member 40 can swing up and down with the rotating shaft 41 as a fulcrum. Since the movable member 40 is connected to a valve or the like (not shown) driven by the actuator 1, the valve or the like can be reciprocated when the movable member 40 swings. Here, FIG. 1 shows a state where the swinging portion 45 of the movable member 40 is horizontal. The movable member 40 can rotate clockwise so that the left end portion of the swinging portion 45 can contact the distal end surface 18 of the second pole 11, and can rotate counterclockwise to rotate the swinging portion. The right end portion of 45 can contact the distal end surface 19 of the third pole 12. Further, the distal end surface of the protrusion 46 of the movable member 40 has substantially the same curvature as the distal end surface (arc-shaped portion) of the first pole 10. Therefore, when the movable member 40 swings, a slight gap is always formed between the tip surface of the protrusion 46 and the tip surface of the first pole 10.

  A coil 50 is wound around the first pole 10. Here, the coil 50 is wound around the first pole 10 by a plurality of turns, but is schematically illustrated in FIG. 1. Both ends of the coil 50 are connected to a current control device (not shown), and the value of current flowing in the coil and its direction are controlled.

The actuator 1 of this embodiment is a device that requires reciprocal movement, that is, an engine valve implemented by a mechanical cam, a hydraulic / pneumatic valve using a solenoid or a linear motor, a pump or a compressor. Used to simplify the mechanism and improve performance.

  Next, the operation of the actuator 1 will be described with reference to FIG. FIG. 2 shows the rotating operation of the movable member of the actuator.

  First, when a current flows through the coil 50 in the direction shown in FIG. 2A, a downward magnetic flux is generated in the first pole 10, and the N pole that is the left magnetic pole is strengthened. Therefore, a magnetic flux that flows from the N pole of the first pole 10 to the S pole of the third pole 12 through the movable member 40 is generated. That is, at this time, the permanent magnet 30, the tip surface 16 of the first pole 10, the protrusion 46 of the movable member 40, the right part of the swinging part 45, the third pole 12, and the connecting part 15 are sequentially passed. A clockwise magnetic flux (in the direction of the arrow) is generated. Then, the magnetic flux of the coil 50 and the magnetic flux of the permanent magnet 30 in the same direction are generated between the front end surface 16 of the first pole 10 and the front end surface of the protrusion 46 of the movable member 40, and the first pole The magnetic flux of the coil 50 and the magnetic flux of the permanent magnet 30 in opposite directions are generated between the front end surface 17 of the tenth and the front end surface of the protrusion 46 of the movable member 40. At this time, thrust in a counterclockwise direction (a tangential direction from the tip surface 17 toward the tip surface 16) acts between the protrusion 46 of the movable member 40 and the tip surfaces 16 and 17 of the first pole 10. . Therefore, the protrusion 46 of the movable member 40 has a direction in which the facing area between the tip surface and the tip surface 16 of the first pole 10 is larger than the facing area between the tip surface and the tip surface 17 of the first pole 10. That is, move left.

  Further, at this time, between the tip surface 19 of the third pole 12 and the right end portion of the movable member 40, the counterclockwise direction in which the attraction force by the electromagnet of the coil 50 and the attraction force by the permanent magnet 30 are added together is added. A suction force acts on the movable member 40. On the other hand, between the distal end surface 18 of the second pole 11 and the left end portion of the movable member 40, the attractive force by the electromagnet of the coil 50 and the attractive force by the permanent magnet 30 cancel each other. Therefore, the attractive force acting between the tip surface 19 of the third pole 12 and the right end portion of the movable member 40 is increased, and the tip surface 18 of the second pole 11 and the left end portion of the movable member 40 are increased. Since the attractive force acting in between decreases, the movable member 40 rotates in the direction in which the right end portion of the swinging portion 45 approaches the distal end surface 19 of the third pole 12, that is, in the counterclockwise direction.

  As described above, the movable member 40 is movable in the counterclockwise direction acting between the protrusion 46 and the distal end surfaces 16 and 17 of the first pole 10 and the distal end surface 19 of the third pole 12. Due to the counterclockwise suction force acting between the right end portion of the member 40, it rotates counterclockwise around the rotating shaft 41, and the tip surface of the protrusion 46 of the movable member 40 is the first pole 10. Opposite to the tip surface 16, the right end portion of the swinging portion 45 comes into contact with the tip surface 19 of the third pole 12.

  On the other hand, when a current flows through the coil 50 in the direction shown in FIG. 2B, an upward magnetic flux is generated in the first pole 10, and the S pole, which is the right magnetic pole, is strengthened. Therefore, a magnetic flux that flows from the N pole of the second pole 11 to the S pole of the first pole 10 through the movable member 40 is generated. That is, at this time, the permanent magnet 30, the connecting portion 14, the second pole 11, the left portion of the swinging portion 45 of the movable member 40, the protrusion 46, and the tip surface 17 of the first pole 10 are sequentially passed. A clockwise magnetic flux (in the direction of the arrow) is generated. Then, the magnetic flux of the coil 50 and the magnetic flux of the permanent magnet 30 in the opposite directions are generated between the front end surface 16 of the first pole 10 and the front end surface of the protrusion 46 of the movable member 40, Between the tip surface 17 of the pole 10 and the tip surface of the protrusion 46 of the movable member 40, the magnetic flux of the coil 50 and the magnetic flux of the permanent magnet 30 are generated in the same direction. At this time, a thrust in the clockwise direction (a tangential direction from the distal end surface 16 toward the distal end surface 17) acts between the protrusion 46 of the movable member 40 and the distal end surfaces 16 and 17 of the first pole 10. Therefore, the protrusion 46 of the movable member 40 has a direction in which the facing area between the tip surface and the tip surface 17 of the first pole 10 is larger than the facing area between the tip surface and the tip surface 16 of the first pole 10. That is, move to the right.

  Further, at this time, between the distal end surface 18 of the second pole 11 and the left end portion of the movable member 40, the clockwise attraction in which the attraction force by the electromagnet of the coil 50 and the attraction force by the permanent magnet 30 are added together. A force acts on the movable member 40. On the other hand, between the distal end surface 19 of the third pole 12 and the right end of the movable member 40, the attractive force by the electromagnet of the coil 50 and the attractive force by the permanent magnet 30 cancel each other. Therefore, the attractive force acting between the tip surface 18 of the second pole 11 and the left end portion of the movable member 40 is increased, and the tip surface 19 of the third pole 12 and the right end portion of the movable member 40 are increased. Since the attractive force acting in between decreases, the movable member 40 rotates in the direction in which the left end portion of the swinging portion 45 approaches the tip surface 18 of the second pole 11, that is, in the clockwise direction.

  As described above, the movable member 40 includes the clockwise thrust acting between the protrusion 46 and the distal end surfaces 15 and 16 of the first pole 10, and the distal end surface 18 and the movable member of the second pole 11. Due to the clockwise attractive force acting between the left end portion of 40 and the rotating shaft 41 as a fulcrum, the tip surface of the protrusion 46 of the movable member 40 is the tip surface 17 of the first pole 10. And the left end portion of the swinging portion 45 comes into contact with the tip surface 18 of the second pole 11.

  In the actuator 1, by controlling the current flowing in the coil 50 and changing the rotation direction of the movable member 40, a valve connected to the movable member 40 can be reciprocated.

  Here, in the actuator 1 of the present embodiment, the force for rotating the movable member 40 is a force obtained by adding the suction force and the thrust force. Therefore, for example, as compared with the case where the movable member 40 does not have the protrusion 46 and rotates only by the suction force acting on both ends of the swinging portion 45, the amount of thrust that the movable member 40 acts on the protrusion 46 is compared. Only the force that rotates the movable member 40 increases. Further, since the torque generated by the thrust acting on the protrusion 46 is a value obtained by multiplying the length of the protrusion and the thrust, the movable member 40 is rotated when the thrust acting on the protrusion 46 is the same. The force to be applied becomes larger as the length of the protrusion is longer.

  As described above, in the actuator 1 according to the present embodiment, the coil 50 is passed between the distal end surface 19 of the third pole 12 and the right end portion of the movable member 40 by flowing a current in a predetermined direction through the coil 50. The magnetic flux of the coil 50 and the magnetic flux of the permanent magnet 30 are strengthened, and the magnetic flux of the coil 50 and the magnetic flux of the permanent magnet 30 are weakened between the tip surface 18 of the second pole 11 and the left end of the movable member 40. At this time, the magnetic flux of the coil 50 and the magnetic flux of the permanent magnet 30 strengthen each other between the tip surface 16 of the first pole 10 and the tip surface of the protrusion 46 of the movable member 40, and the first pole 10. The magnetic flux of the coil 50 and the magnetic flux of the permanent magnet 30 are weakened between the front end surface 17 and the front end surface of the protrusion 46 of the movable member 40. Therefore, a counterclockwise thrust is generated on the distal end surface of the protrusion 46 of the movable member 40, and an attractive force is generated between the distal end surface 19 of the third pole 12 and the right end portion of the movable member 40. . On the other hand, when a current in a direction opposite to the predetermined direction is passed through the coil 50, the magnetic flux of the coil 50 and the magnetic flux of the permanent magnet 30 are generated between the distal end surface 18 of the second pole 11 and the left end portion of the movable member 40. The magnetic flux of the coil 50 and the magnetic flux of the permanent magnet 30 are weakened between the tip surface 19 of the third pole 12 and the right end of the movable member 40. At this time, the magnetic flux of the coil 50 and the magnetic flux of the permanent magnet 30 strengthen each other between the front end surface 17 of the first pole 10 and the front end surface of the protrusion 46 of the movable member 40, and the first pole 10. The magnetic flux of the coil 50 and the magnetic flux of the permanent magnet 30 weaken each other between the front end surface 16 of the movable member 40 and the front end surface of the protrusion 46 of the movable member 40. Therefore, a thrust in the clockwise direction is generated on the distal end surface of the protrusion 46 of the movable member 40, and an attractive force is generated between the distal end surface 18 of the second pole 11 and the left end portion of the movable member 40. Here, the movable member 40 has a suction force acting between the left end portion thereof and the tip end surface 18 of the second pole 11 or a suction force acting between the right end portion thereof and the tip end face 19 of the third pole 12. Rotation is not performed by force alone, but is performed by a force obtained by adding the suction force and the thrust acting between the distal end surface of the protrusion 46 and the distal end surfaces 16 and 17 of the first pole 10. Therefore, compared with the case where the movable member 40 is rotated only by the suction force, the rotation direction of the movable member 40 can be changed quickly, and the responsiveness of the opening / closing operation of the valve or the like driven by the actuator 1 is improved. be able to.

  Next, a second embodiment of the present invention will be described with reference to FIGS. FIG. 3 is a diagram showing a schematic configuration of the actuator according to the present embodiment.

  The actuator 101 of this embodiment differs greatly from the actuator 1 of the first embodiment in that the actuator 1 has a coil 50 wound around the first pole 10 whereas the actuator 101 The coils 151 and 152 are wound around the second pole 11 and the third pole 12, respectively. In addition, in the structure of the actuator 101 and the actuator 1, the same code | symbol is attached | subjected to the same part and detailed description is abbreviate | omitted.

  In the actuator 101 of FIG. 3, a coil 151 is wound around the second pole 11, and a coil 152 is wound around the third pole 12. Here, the coils 151 and 152 are wound around the second pole 11 and the third magnetic pole 13 by a plurality of turns, respectively, but are schematically shown in FIG. The both ends of the coils 151 and 152 are connected to a current control device (not shown), respectively, and the electricity flowing in the coil and its direction are controlled.

  Next, the operation of the actuator 101 will be described with reference to FIG. FIG. 4 shows the rotation operation of the movable member of the actuator.

  First, when a current is passed through the coil 152 in the direction shown in FIG. 4A, the permanent magnet 30, the tip surface 16 of the first pole 10, the protrusion 46 of the movable member 40, and the swinging portion. A counterclockwise magnetic flux (in the direction of the arrow) that passes through the right portion of 45, the third pole 12, and the connecting portion 15 in this order is generated. Then, the movable member 40 has a counterclockwise thrust acting between the protrusion 46 and the distal end surfaces 16 and 17 of the first pole 10, and the distal end surface 19 of the third pole 12 and the movable member 40. The counterclockwise suction force acting between the right end of the first member 10 rotates counterclockwise around the rotation shaft 41, and the tip surface of the protrusion 46 of the movable member 40 is the tip surface of the first pole 10. 16, and the right end portion of the swinging portion 45 comes into contact with the distal end surface 19 of the third pole 12.

  On the other hand, when a current is applied to the coil 151 in the direction shown in FIG. 4B, the permanent magnet 30, the coupling portion 14, the second pole 11, and the left side of the swinging portion 45 of the movable member 40 are placed. A counterclockwise magnetic flux (in the direction of the arrow) that passes through the portion, the protrusion 46, and the tip surface 17 of the first pole 10 in this order is generated. Then, the movable member 40 has a clockwise thrust acting between the protrusion 46 and the distal end surfaces 15 and 16 of the first pole 10, and the distal end surface 18 of the second pole 11 and the movable member 40. Due to the clockwise attractive force acting between the left end portion and the rotating shaft 41 as a fulcrum, the distal end surface of the protrusion 46 of the movable member 40 faces the distal end surface 17 of the first pole 10. In addition, the left end portion of the swinging portion 45 comes into contact with the distal end surface 18 of the second pole 11.

  As described above, in the actuator 101 according to the present embodiment, the responsiveness of the opening / closing operation of a valve or the like driven by the actuator 101 can be improved as in the actuator 1 according to the first embodiment.

  Next, a third embodiment of the present invention will be described with reference to FIGS. FIG. 5 is a diagram showing a schematic configuration of the actuator according to the present embodiment.

  The actuator 201 of the present embodiment is greatly different from the actuator 1 of the first embodiment. In the actuator 1, no permanent magnet is disposed on the tip surfaces of the second pole 11 and the third pole 12. On the other hand, in the actuator 201, the permanent magnets 231 and 232 are disposed on the tip surfaces of the second pole 11 and the third pole 12, respectively. In addition, in the structure of the actuator 201 and the actuator 1, the same code | symbol is attached | subjected to the same part and detailed description is abbreviate | omitted.

  In the actuator 201 of FIG. 5, a permanent magnet 231 is disposed on the surface of the tip surface 18 of the second pole 11, and a permanent magnet 232 is disposed on the surface of the tip surface 19 of the third pole 12. . The permanent magnets 231 and 232 are plate-shaped members, and one end surface is an N pole and the other end surface is an S pole. In the present embodiment, the surface that becomes the S pole of the permanent magnet 231 is bonded to the tip surface 18 of the second pole 11, and the surface that becomes the N pole of the permanent magnet 231 is arranged on the surface of the second pole 11. In addition, the surface of the permanent magnet 232 serving as the north pole is bonded to the tip surface 19 of the third pole 12, and the surface of the permanent magnet 232 serving as the south pole is disposed on the surface of the third pole 12. ing. Here, in the second pole 11, the lower surface of the permanent magnet 231 is a magnetic pole surface, and in the third pole 12, the lower surface of the permanent magnet 232 is a magnetic pole surface. And in the 2nd pole 11 and the 3rd pole 12, since the permanent magnets 231 and 232 are arrange | positioned in the direction mentioned above, the magnetic pole surface of the 2nd pole 11 has a polarity of N pole, and 3rd The pole face of the pole 12 has the polarity of the S pole.

  Next, the operation of the actuator 201 will be described with reference to FIG. FIG. 6 shows the rotating operation of the movable member of the actuator.

  First, when a current is passed through the coil 50 in the direction shown in FIG. 6A, the permanent magnet 30, the tip surface 16 of the first pole 10, the protrusion 46 of the movable member 40, and the swinging portion. A counterclockwise magnetic flux (in the direction of the arrow) is generated that passes through the right portion of 45, the permanent magnet 232, the third pole 12, and the connecting portion 15 in this order. Then, the movable member 40 has a counterclockwise thrust acting between the protrusion 46 and the tip surfaces 16 and 17 of the first pole 10, and the lower surface of the permanent magnet 232 and the right end portion of the movable member 40. Is rotated counterclockwise around the rotation shaft 41 by the counterclockwise suction force acting between them, and the tip surface of the protrusion 46 of the movable member 40 faces the tip surface 16 of the first pole 10. In addition, the right end portion of the swinging portion 45 comes into contact with the lower surface of the permanent magnet 232.

  On the other hand, when a current flows through the coil 50 in the direction shown in FIG. 6B, the permanent magnet 30, the connecting portion 14, the permanent magnet 231, the second pole 11, and the swinging portion of the movable member 40. A counterclockwise magnetic flux (in the direction of the arrow) is generated that sequentially passes through the left side portion of 45, the protrusion 46, and the tip surface 17 of the first pole 10. Then, the movable member 40 has a clockwise thrust acting between the protrusion 46 and the tip surfaces 15 and 16 of the first pole 10, and the lower surface of the permanent magnet 231 and the left end portion of the movable member 40. The clockwise suction force acting between them rotates clockwise around the rotation shaft 41, the tip surface of the protrusion 46 of the movable member 40 faces the tip surface 17 of the first pole 10, and The left end of the swinging part 45 comes into contact with the lower surface of the permanent magnet 231.

  As shown in FIG. 6A, even if the current does not flow through the coil 50 with the right end portion of the movable member 40 in contact with the lower surface of the third permanent magnet 232, the magnetic force of the permanent magnet 232 The movable member 40 is held in that state. Further, as shown in FIG. 6B, even when the current does not flow through the coil 50 with the left end portion of the movable member 40 in contact with the lower surface of the permanent magnet 231, the movable member 40 is held in that state.

  As described above, in the actuator 201 according to the present embodiment, the responsiveness of the opening / closing operation of a valve or the like driven by the actuator 201 can be improved as in the actuator 1 according to the first embodiment.

  Next, a fourth embodiment of the present invention will be described with reference to FIGS. FIG. 7 is a diagram showing a schematic configuration of the actuator according to the present embodiment.

  The actuator 301 of the present embodiment is greatly different from the actuator 1 of the first embodiment. In the actuator 1, the tip surface of the first pole 10 has an arc shape that is recessed upward. In the actuator 301, the tip surface of the first pole 10 has a substantially dovetail shape (both ends of the tip surface of the first pole 10 protrude downward). In addition, in the structure of the actuator 301 and the actuator 1, the same code | symbol is attached | subjected to the same part and detailed description is abbreviate | omitted.

7 includes a first electromagnet pole 310 (hereinafter referred to as a first pole 310), a second electromagnet pole 11 (hereinafter referred to as a second pole 11), and a third electromagnet. The iron core 302 is composed of the pole 12 (hereinafter referred to as the third pole 12) and the connecting portions 14 and 15 that connect them. Here, a protruding portion 311 protruding downward is formed at the left end portion (the end portion on the side close to the second pole 11) of the tip surface of the first pole 310, and the right end portion (the third end portion) is formed. A projecting portion 312 projecting downward is formed at an end portion on the side close to the pole 12.
Then, on the front end surface of the first pole 310, a space between the protruding portion 311 and the protruding portion 312 has an arc shape that is recessed upward. Therefore, in the first pole 310, the arc-shaped portions (tip surfaces 316 and 317 described later), the inner side surface 318 of the protruding portion 311 and the inner side surface 319 of the protruding portion 312 are magnetic pole surfaces. Further, since the inner side surface 318 of the projecting portion 311 and the inner side surface 319 of the projecting portion 312 are inclined inward and downward from the end of the arcuate portion, the protrusion of the movable member 40 when the movable member 40 rotates. The portion 46 and the inner side surface 318 of the protruding portion 311 and the inner side surface 319 of the protruding portion 312 can come into contact with no gap.

  The portion on the left side of the permanent magnet 30 on the distal end surface of the first pole 10 (hereinafter referred to as the distal end surface 316) and the inner side surface 318 of the protruding portion 311 have N-polarity, and the permanent magnet 30 on the distal end surface. The portion on the right side (hereinafter referred to as the front end surface 317) and the inner side surface 319 of the protrusion 312 have the polarity of the south pole. That is, the first pole 310 has an N-pole magnetic pole face and an S-pole magnetic pole face.

  Next, the operation of the actuator 301 will be described with reference to FIG. FIG. 8 shows the rotating operation of the movable member of the actuator.

  First, when a current is passed through the coil 50 in the direction shown in FIG. 8A, the permanent magnet 30, the tip surface 316 of the first pole 310, the inner peripheral surface 318 of the protruding portion 311, and the movable member. A counterclockwise magnetic flux (in the direction of the arrow) is generated that sequentially passes through the protruding portion 46, the right portion of the swinging portion 45, the third pole 12, and the connecting portion 15. Then, between the front end surface 316 of the first pole 310 and the front end surface of the protrusion 46 of the movable member 40 and between the inner peripheral surface 318 of the protrusion 311 and the left side of the protrusion 46 of the movable member 40. The magnetic flux of the coil 50 and the magnetic flux of the permanent magnet 30 are generated in the same direction, and between the front end surface 317 of the first pole 310 and the front end surface of the projection 46 of the movable member 40 and the inner peripheral surface of the projection 312. Between 319 and the right side surface of the protrusion 46 of the movable member 40, the magnetic flux of the coil 50 and the magnetic flux of the permanent magnet 30 are generated in opposite directions. At this time, thrust in a counterclockwise direction (a tangential direction from the distal end surface 317 toward the distal end surface 316) acts between the protrusion 46 of the movable member 40 and the distal end surfaces 316 and 317 of the first pole 310. . Therefore, the protrusion 46 of the movable member 40 has a direction in which the facing area between the tip surface and the tip surface 316 of the first pole 310 is larger than the facing area between the tip surface and the tip surface 317 of the first pole 310. That is, move left.

  Further, at this time, a counterclockwise clock in which the attraction force by the electromagnet of the coil 50 and the attraction force by the permanent magnet 30 are added between the inner peripheral surface 318 of the projecting portion 311 and the left side surface of the projection portion 46 of the movable member 40. A suction force in the rotating direction acts on the movable member 40. On the other hand, between the inner peripheral surface 319 of the protruding portion 312 and the right side surface of the protruding portion 46 of the movable member 40, the attractive force by the electromagnet of the coil 50 and the attractive force by the permanent magnet 30 cancel each other. Therefore, the suction force acting on the inner peripheral surface 318 of the protruding portion 311 and the left side surface of the protruding portion 46 of the movable member 40 is increased, and the inner peripheral surface 319 of the protruding portion 312 and the right side of the protruding portion 46 of the movable member 40 are increased. Since the attractive force acting between the two surfaces decreases, the movable member 40 rotates in the direction in which the protrusion 46 of the movable member 40 approaches the inner peripheral surface 318 of the protrusion 311, that is, in the counterclockwise direction.

  Further, at this time, between the front end surface 19 of the third pole 12 and the right end portion of the movable member 40, the counterclockwise direction in which the attraction force by the electromagnet of the coil 50 and the attraction force by the permanent magnet 30 are added together is added. A suction force acts on the movable member 40. On the other hand, between the distal end surface 18 of the second pole 11 and the left end portion of the movable member 40, the attractive force by the electromagnet of the coil 50 and the attractive force by the permanent magnet 30 cancel each other. Therefore, the attractive force acting between the tip surface 19 of the third pole 12 and the right end portion of the movable member 40 is increased, and the tip surface 18 of the second pole 11 and the left end portion of the movable member 40 are increased. Since the attractive force acting in between decreases, the movable member 40 rotates in the direction in which the right end portion of the swinging portion 45 approaches the distal end surface 19 of the third pole 12, that is, in the counterclockwise direction.

  As described above, the movable member 40 has a counterclockwise thrust acting between the protrusion 46 and the tip surfaces 316 and 317 of the first pole 310, and the inner peripheral surface 318 of the protrusion 311 and the movable member 40. Counterclockwise suction force acting between the left side surface of the protrusion 46 and counterclockwise suction acting between the tip surface 19 of the third pole 12 and the right end portion of the movable member 40. Due to the force, the rotary shaft 41 is rotated counterclockwise, the tip surface of the projection 46 of the movable member 40 faces the tip surface 316 of the first pole 310, and the left side of the projection 46 is the projection 311. In contact with the inner peripheral surface 318 and the right end portion of the swinging portion 45 is in contact with the distal end surface 19 of the third pole 12.

  On the other hand, when a current is passed through the coil 50 in the direction shown in FIG. 8B, the permanent magnet 30, the connecting portion 14, the second pole 11, and the left side of the swinging portion 45 of the movable member 40. A counterclockwise magnetic flux (in the direction of the arrow) is generated that sequentially passes through the portion, the protrusion 46, the tip surface 17 of the first pole 310, and the inner peripheral surface 319 of the protrusion 312. Then, between the front end surface 16 of the first pole 10 and the front end surface of the projection 46 of the movable member 40 and between the inner peripheral surface 319 of the projection 312 and the right side of the projection 46 of the movable member 40. The magnetic flux of the coil 50 and the magnetic flux of the permanent magnet 30 in opposite directions are generated, and between the front end surface 17 of the first pole 10 and the front end surface of the protrusion 46 of the movable member 40 and the inner periphery of the protrusion 311. Between the surface 318 and the left side surface of the protrusion 46 of the movable member 40, the magnetic flux of the coil 50 and the magnetic flux of the permanent magnet 30 are generated in the same direction. At this time, a thrust in a clockwise direction (a tangential direction from the distal end surface 316 toward the distal end surface 317) acts between the protrusion 46 of the movable member 40 and the distal end surfaces 316 and 317 of the first pole 310. Therefore, the protrusion 46 of the movable member 40 has a direction in which the facing area between the tip surface and the tip surface 317 of the first pole 310 is larger than the facing area between the tip surface and the tip surface 316 of the first pole 310. That is, move to the right.

  Further, at this time, clockwise between the inner peripheral surface 319 of the projecting portion 312 and the right side surface of the protruding portion 46 of the movable member 40, which is the sum of the attraction force by the electromagnet of the coil 50 and the attraction force by the permanent magnet 30. A suction force in the direction acts on the movable member 40. On the other hand, between the inner peripheral surface 318 of the protruding portion 311 and the left side surface of the protruding portion 46 of the movable member 40, the attractive force by the electromagnet of the coil 50 and the attractive force by the permanent magnet 30 cancel each other. Therefore, the suction force acting between the inner peripheral surface 319 of the protruding portion 312 and the right side surface of the protruding portion 46 of the movable member 40 is increased, and the inner peripheral surface 318 of the protruding portion 311 and the protruding portion of the movable member 40 are increased. Since the suction force acting on the left side surface of 46 decreases, the movable member 40 rotates in the direction in which the protrusion 46 of the movable member 40 approaches the inner peripheral surface 319 of the protrusion 312, that is, in the clockwise direction.

  Further, at this time, between the distal end surface 18 of the second pole 11 and the left end portion of the movable member 40, clockwise attraction in which the attraction force by the electromagnet of the coil 50 and the attraction force by the permanent magnet 30 are added together. A force acts on the movable member 40. On the other hand, between the distal end surface 19 of the third pole 12 and the right end of the movable member 40, the attractive force by the electromagnet of the coil 50 and the attractive force by the permanent magnet 30 cancel each other. Therefore, the attractive force acting between the tip surface 18 of the second pole 11 and the left end portion of the movable member 40 is increased, and the tip surface 19 of the third pole 12 and the right end portion of the movable member 40 are increased. Since the attractive force acting in between decreases, the movable member 40 rotates in the direction in which the left end portion of the swinging portion 45 approaches the tip surface 18 of the second pole 11, that is, in the clockwise direction.

  As described above, the movable member 40 has the clockwise thrust acting between the protrusion 46 and the tip surfaces 316 and 317 of the first pole 310, the inner peripheral surface 319 of the protrusion 312 and the protrusion of the movable member 40. By the clockwise suction force acting between the right side surface of the portion 46 and the clockwise suction force acting between the distal end surface 18 of the second pole 11 and the left end portion of the movable member 40, The rotating shaft 41 is rotated clockwise about the fulcrum, the distal end surface of the projecting portion 46 of the movable member 40 faces the distal end surface 317 of the first pole 310, and the right side surface of the projecting portion 46 is the inner peripheral surface of the projecting portion 312. 319 and the left end portion of the swinging portion 45 are in contact with the distal end surface 18 of the second pole 11.

  As described above, in the actuator 301 according to the present embodiment, the responsiveness of the opening / closing operation of a valve or the like driven by the actuator 301 can be further improved as compared with the actuator 1 according to the first embodiment. .

  Next, a fifth embodiment of the present invention will be described with reference to FIGS. FIG. 9 is a diagram showing a schematic configuration of the actuator according to the present embodiment.

  The actuator 401 of the present embodiment is greatly different from the actuator 1 of the first embodiment. In the actuator 1, the permanent magnet 30 is embedded in the first pole 10, whereas in the actuator 401, The permanent magnets 431 and 432 are disposed on the surface of the first magnetic pole 410. In addition, in the structure of the actuator 401 and the actuator 1, the same code | symbol is attached | subjected to the same part and detailed description is abbreviate | omitted.

  In the actuator 401 of FIG. 9, a permanent magnet 431 is arranged on the surface of the portion on the left side of the center position of the front end surface of the first magnetic pole 410 (hereinafter referred to as the front end surface 416). A permanent magnet 432 is disposed on the surface of the portion on the right side of the center position of the front end surface (hereinafter referred to as the front end surface 417). The permanent magnets 431 and 432 are plate-shaped members, and one end surface is an N pole and the other end surface is an S pole. In the present embodiment, the surface that becomes the S pole of the permanent magnet 431 is bonded to the tip surface 416 of the first magnetic pole 410, and the surface that becomes the N pole of the permanent magnet 431 is disposed on the surface of the first magnetic pole 410. In addition, the surface of the permanent magnet 432 serving as the N pole is bonded to the tip surface 417 of the first magnetic pole 410, and the surface of the permanent magnet 432 serving as the S pole is disposed on the surface of the first magnetic pole 410. ing. Here, in the first magnetic pole 410, the lower surface of the permanent magnet 431 and the lower surface of the permanent magnet 432 are magnetic pole surfaces, the lower surface of the permanent magnet 431 has an N-polarity, and the lower surface of the permanent magnet 432 has an S-polarity. have. That is, the first magnetic pole 410 has an N-pole magnetic pole face and an S-pole magnetic pole face. The tip surface 18 of the second pole 11 has an N-pole polarity, and the tip surface 19 of the third pole 12 has an S-pole polarity.

  Next, the operation of the actuator 401 will be described with reference to FIG. FIG. 10 shows the rotation operation of the movable member of the actuator.

  First, when a current is passed through the coil 50 in the direction shown in FIG. 10A, the permanent magnet 431, the protrusion 46 of the movable member 40, the right part of the swinging part 45, the third pole. 12, a counterclockwise magnetic flux (in the direction of the arrow) that passes through the connecting portion 15 and the first magnetic pole 410 in order is generated. Then, the movable member 40 has a counterclockwise thrust acting between the protrusion 46 and the permanent magnets 431, 432, and between the distal end surface 19 of the third pole 12 and the right end of the movable member 40. Is rotated counterclockwise about the rotation shaft 41 by the attraction force acting counterclockwise on the rotating shaft 41, the tip surface of the protrusion 46 of the movable member 40 faces the permanent magnets 431 and 432, and the swinging portion The right end portion of 45 comes into contact with the distal end surface 19 of the third pole 12.

  On the other hand, when a current flows through the coil 50 in the direction shown in FIG. 10B, the permanent magnet 432, the first magnetic pole 410, the coupling portion 14, the second pole 11, and the movable member 40 are shaken. A counterclockwise magnetic flux (in the direction of the arrow) is generated that sequentially passes through the left portion of the moving portion 45, the protrusion 46, and the distal end surface 17 of the first pole 10. Then, the movable member 40 has a clockwise thrust acting between the protrusion 46 and the permanent magnets 431 and 432, and between the distal end surface 18 of the second pole 11 and the left end of the movable member 40. Due to the clockwise attractive force acting, the rotating shaft 41 is rotated clockwise about the fulcrum, the tip surface of the protrusion 46 of the movable member 40 is opposed to the permanent magnets 431 and 432, and the left end of the swinging portion 45. The portion comes into contact with the tip surface 18 of the second pole 11.

  As described above, in the actuator 401 according to the present embodiment, the responsiveness of the opening / closing operation of a valve or the like driven by the actuator 401 can be improved in the same manner as the actuator 1 according to the first embodiment.

  Next, a sixth embodiment of the present invention will be described with reference to FIGS. FIG. 11 is a diagram showing a schematic configuration of the actuator according to the present embodiment.

  The actuator 501 of this embodiment differs greatly from the actuator 1 of the first embodiment in that the actuator 1 has a configuration in which the movable member 40 is rotated by one iron core 2 whereas the actuator 501 has 2 The movable member 540 is rotated by one iron core 2. In addition, in the structure of the actuator 501 and the actuator 1, for example, like the reference numerals of 10, 10a, and 10b, portions where symbols are added to the same reference numerals have the same configuration, and detailed description thereof is omitted.

  The actuator 501 of FIG. 11 has an upper iron core 2a and a lower iron core 2b having the same configuration as the iron core 2 included in the actuator 1 of the first embodiment. A movable member 540 that is rotatable about the rotation shaft 541 is disposed between the distal end surface of the first pole 10a of the upper iron core 2a and the distal end surface of the first pole 10b of the lower iron core 2b. Yes. The movable member 540 includes a swinging portion 545 having substantially the same length as the distance between the tip end surface 18a of the second pole 11a and the tip end surface 19a of the third pole 12a, and is perpendicular to the center position of the swinging portion 545. A protrusion 546 protruding upward and a protrusion 547 protruding vertically downward from the center position of the swinging part 545 are provided. The movable member 540 is supported by the rotation shaft 541 at the center position of the swinging portion 545. The rotating shaft 541 extends in the horizontal direction (in the drawing, the depth direction in the drawing) between the first pole 10a and the first pole 10b. Therefore, the movable member 540 can swing up and down with the rotating shaft 541 as a fulcrum. The movable member 540 rotates clockwise so that the left end portion of the swinging portion 545 can contact the distal end surface 18a of the second pole 11a and the right end portion of the swinging portion 545 is the second end portion. The tip end surface 18b of the pole 11b can be contacted, and by rotating counterclockwise, the right end portion of the swing portion 45 can contact the tip end surface 19a of the third pole 12a, and the swing portion 545 The left end portion can contact the tip surface 19b of the third pole 12b. Further, the tip surfaces of the protrusions 546 and 547 of the movable member 540 have substantially the same curvature as the tip surfaces (arc-shaped portions) of the first poles 10a and 10b. Therefore, when the movable member 540 is swung, a slight gap is always formed between the tip surfaces of the protrusions 546 and 547 and the tip surface of the magnetic pole 10.

  Next, the operation of the actuator 501 will be described with reference to FIG. FIG. 12 shows the rotating operation of the movable member of the actuator.

  First, when a current is passed through the coils 50a and 50b in the direction shown in FIG. 12A, in the upper iron core 2a, the permanent magnet 30a, the tip surface 16a of the first pole 10a, and the movable member 540 are moved. A counterclockwise magnetic flux (in the direction of the arrow) is generated that sequentially passes through the protruding portion 546, the right portion of the swinging portion 545, the third pole 12a, and the connecting portion 15a. In the lower iron core 2b, the permanent magnet 30b, the tip surface 16b of the first pole 10b, the protrusion 547 of the movable member 540, the left part of the swinging part 545, the third pole 12b, and the connecting part 15b are sequentially arranged. Passing counterclockwise (arrow direction) magnetic flux is generated.

  Then, the movable member 540 has a counterclockwise thrust acting between the projection 546 and the tip surfaces 16a and 17a of the first pole 10a, and the tip surfaces 16b and 17b of the projection 547 and the first pole 10b. Counterclockwise thrust acting between the tip end surface 19a of the third pole 12a and the right end of the movable member 540, and the third pole 12b. Due to the counterclockwise suction force acting between the front end surface 19b and the left end portion of the movable member 540, the rotary shaft 541 is rotated counterclockwise. The tip surface of the projection 546 of the movable member 540 faces the tip surface 16a of the first pole 10a, and the tip surface of the projection 547 of the movable member 540 faces the tip surface 16b of the first pole 10b. In addition, the right end portion of the swinging portion 545 comes into contact with the distal end surface 19a of the third pole 12a, and the left end portion of the swinging portion 545 comes into contact with the distal end surface 19b of the third pole 12b.

  On the other hand, when a current is passed through the coils 50a and 50b in the direction shown in FIG. 12B, in the upper iron core 2a, the permanent magnet 30a, the tip surface 17a of the first pole 10a, and the movable member 540 are moved. A counterclockwise magnetic flux (in the direction of the arrow) is generated that sequentially passes through the protrusion 546, the left portion of the swinging portion 545, the second pole 11a, and the connecting portion 14a. In the lower iron core 2b, the permanent magnet 30b, the tip surface 17b of the first pole 10b, the protrusion 547 of the movable member 540, the right part of the swinging part 545, the second pole 11b, and the connecting part 14b are sequentially arranged. Passing counterclockwise (arrow direction) magnetic flux is generated.

  Then, the movable member 540 has a clockwise thrust acting between the projection 546 and the tip surfaces 16a and 17a of the first pole 10a, and the tip surfaces 16b and 17b of the projection 547 and the first pole 10b. Clockwise thrust acting between the tip end surface 18a of the second pole 11a and the clockwise suction force acting between the left end portion of the movable member 540, and the tip end surface of the second pole 11b Due to the clockwise suction force acting between 18b and the right end of the movable member 540, the rotating shaft 541 is rotated clockwise. The tip surface of the projection 546 of the movable member 540 faces the tip surface 17a of the first pole 10a, and the tip surface of the projection 547 of the movable member 540 faces the tip surface 17b of the first pole 10b. In addition, the left end portion of the swinging portion 545 comes into contact with the distal end surface 18a of the second pole 11a, and the right end portion of the swinging portion 545 comes into contact with the distal end surface 18b of the second pole 11b.

  As described above, in the actuator 501 of the present embodiment, the responsiveness of the opening / closing operation of a valve or the like driven by the actuator 501 can be further improved as compared with the actuator 1 of the first embodiment. .

  Next, a seventh embodiment of the present invention will be described with reference to FIGS. FIG. 13 is a diagram showing a schematic configuration of the actuator according to the present embodiment.

  The actuator 601 in FIG. 13 has an iron core 602 that is a pair of stators arranged to face each other vertically. The iron core 602 includes a first electromagnet pole 610 (hereinafter referred to as a first pole 610), a second electromagnet pole 611 (hereinafter referred to as a second pole 611), and a connecting portion 614 that connects these. It consists of and. The first and second poles 610 and 611 are disposed at an angle such that the respective front end surfaces can face the outer peripheral surface of a circular movable member 640 described later.

  A permanent magnet 631 is disposed at the center position of the first pole 610. The permanent magnet 631 is a plate-like member, and one end surface is an N pole and the other end surface is an S pole. Here, the permanent magnet 631 has a magnetic pole surface parallel to the axis of the first pole 610. In the present embodiment, the surface of the permanent magnet 631 that is the north pole is disposed on the outside, and the surface of the permanent magnet 631 that is the south pole is disposed on the inside. Further, the lower end portion of the permanent magnet 631 coincides with the front end surface of the first pole 610. Similarly, a permanent magnet 632 is disposed at the center position of the second pole 611. The permanent magnet 632 is a plate-like member, and has one end surface as an N pole and the other end surface as an S pole. Here, the permanent magnet 632 has a magnetic pole surface parallel to the axis of the second pole 611. In the present embodiment, the permanent magnet 632 is arranged so that the surface of the permanent magnet 632 serving as the north pole is on the outside and the surface of the permanent magnet 632 serving as the south pole is on the inside. Further, the lower end portion of the permanent magnet 632 coincides with the front end surface of the second pole 611.

  Here, the distal end surface of the first pole 610 has a substantially dovetail shape. That is, a protruding portion 661 that protrudes downward is formed at the left end portion of the distal end surface of the first pole 610, and a protruding portion 662 that protrudes downward is formed at the right end portion thereof. Then, on the front end surface of the first pole 610, a space between the protruding portion 661 and the protruding portion 662 has an arc shape that is recessed upward. Therefore, in the first pole 610, arc-shaped portions (tip surfaces 666 and 667 to be described later), the inner side surface 668 of the protruding portion 661, and the inner side surface 669 of the protruding portion 662 become magnetic pole surfaces. Further, since the inner side surface 668 of the protruding portion 661 and the inner side surface 669 of the protruding portion 662 are inclined inward and downward from the end portion of the arc-shaped portion, the protrusion of the movable member 640 when the movable member 640 rotates. The portion 646 and the inner side surface 668 of the protruding portion 661 and the inner side surface 669 of the protruding portion 662 can come into contact with each other without a gap. The portion on the left side of the permanent magnet 631 on the front end surface of the first pole 610 (hereinafter referred to as the front end surface 666) and the inner side surface 668 of the protrusion 661 have N-pole polarity, and the permanent magnet 631 on the front end surface. The portion on the right side (hereinafter referred to as the front end surface 667) and the inner surface 669 of the protrusion 662 have the polarity of the south pole. That is, the first pole 610 has an N-pole magnetic pole face and an S-pole magnetic pole face.

  The configuration of the distal end surface of the second pole 611 is the same as the configuration of the distal end surface of the first pole 610, and protrusions 671 and 672 are formed. A portion on the left side of the permanent magnet 632 on the tip surface of the second pole 611 (hereinafter referred to as a tip surface 676) and an inner side surface 678 of the protrusion 671 have the polarity of the S pole, and are on the right side of the permanent magnet 632 on the tip surface. (Hereinafter referred to as the tip surface 677) and the inner surface 679 of the protrusion 672 have the polarity of the N pole. That is, the second pole 611 has an N pole magnetic pole face and an S pole magnetic pole face.

  A coil 650 is wound around the connecting portion 614 of the iron core 602. Here, the coil 650 is wound around the connecting portion 614 by a plurality of turns, but is schematically illustrated in FIG. 13. The both ends of the coil 650 are connected to a current control device (not shown), and the value of current flowing in the coil and its direction are controlled.

  In the actuator 601, a circular movable member 640 that is rotatable about the rotation shaft 641 is disposed between the pair of iron cores 602. Two protrusions 646 and two protrusions 647 are formed on the outer peripheral surface of the movable member 640, and these are alternately arranged every 90 degrees. That is, the two protrusions 646 are arranged every 180 degrees, and the two protrusions 647 are arranged every 180 degrees. The protrusion 646 is disposed between the protrusions 661 and 662 on the front end surface of the first pole 610 of the iron core 602, and the protrusion 647 is a protrusion on the front end surface of the second pole 611 of the iron core 602. 671 and 672 are arranged. In addition, the movable member 640 is provided with a rod-like connecting member 645 extending in the horizontal direction between the two iron cores 602. Since this connecting member 645 is connected to a valve or the like (not shown) driven by the actuator 601, the movable member 640 rotates and the connecting member 645 swings to reciprocate the valve or the like. It is.

  Next, the operation of the actuator 601 will be described with reference to FIG. FIG. 14 shows the rotation operation of the movable member of the actuator.

  First, when a current is passed through the coil 650 in the direction shown in FIG. 14A, the upper iron core 602 has a permanent magnet 631, a tip surface 666 of the first pole 610, and a protrusion 661. A counterclockwise magnetic flux (in the direction of the arrow) that sequentially passes through the peripheral surface 668, the movable member 640, the tip surface 676 of the second pole 611, the inner peripheral surface 678 of the protrusion 671, the permanent magnet 632, and the connecting portion 614 is generated. To do. Then, the movable member 640 has a counterclockwise thrust acting between the projection 646 and the tip surfaces 666 and 667 of the first pole 610, and tip surfaces 676 and 677 of the projection 647 and the second pole 611. Counterclockwise thrust acting between the inner peripheral surface 668 of the protrusion 661 and the left-hand side of the protrusion 646 of the movable member 640, and the protrusion The counterclockwise suction force acting between the inner peripheral surface 678 of 662 and the left side surface of the protrusion 647 of the movable member 640 rotates counterclockwise around the rotation shaft 641. The same applies to the lower iron core 602.

  On the other hand, when a current flows through the coil 650 in the direction shown in FIG. 14B, the upper iron core 602 has permanent magnets 631, connecting portions 614, permanent magnets 632, and tips of the second poles 611. A clockwise magnetic flux is generated that sequentially passes through the surface 677 and the inner peripheral surface 679 of the protruding portion 672, the movable member 640, the tip surface 667 of the first pole 610 and the inner peripheral surface 669 of the protruding portion 662. . Then, the movable member 640 includes a clockwise thrust acting between the protrusion 646 and the tip surfaces 666 and 667 of the first pole 610, and tip surfaces 676 and 677 of the protrusion 647 and the second pole 611. A clockwise thrust acting between the inner peripheral surface 669 of the protrusion 662 and a right-hand suction force acting between the right side surface of the protrusion 646 of the movable member 640, and an inner of the protrusion 662 By a clockwise suction force acting between the peripheral surface 679 and the right side surface of the protrusion 647 of the movable member 640, the rotation shaft 641 is rotated clockwise. The same applies to the lower iron core 602.

  As described above, in the actuator 601 of the present embodiment, the responsiveness of the opening / closing operation of a valve or the like driven by the actuator 601 can be further improved as compared with the actuator 1 of the first embodiment. .

  In the actuator 101 of the second embodiment described above, permanent magnets 231 and 232 may be disposed on the tip surfaces of the second pole 11 and the third pole 12, respectively (third embodiment). The tip surface of the first pole 10 may have a substantially dovetail shape (similar to the fourth embodiment), or the permanent magnets 431 and 432 are replaced with the first magnets 431 and 432 instead of the permanent magnet 30. It may be arranged on the surface of the magnetic pole 410 (similar to the fifth embodiment). In the actuator 401 according to the fifth embodiment, permanent magnets 231 and 232 may be disposed on the tip surfaces of the second pole 11 and the third pole 12 (similar to the third embodiment). ).

  In the seventh embodiment described above, the distal end surface of the first pole 610 and the distal end surface of the second pole 611 are substantially dovetail shaped. However, as shown in FIG. Only the front end surface of 710 may have a substantially dovetail shape. Here, the actuator 701 of FIG. 15 is the same as the configuration of the actuator 601 of the sixth embodiment except that the tip surface of the second pole 711 is not substantially dovetail shaped. Therefore, in the actuator 701 of FIG. 15, the thrust acting between the projection facing the tip surface of the first pole 710 and the tip surface of the first pole, the projection facing the tip surface of the second pole 711. The thrust acting between the tip and the tip surface of the second pole, and the inner peripheral surface of the protrusion facing the tip surface of the first pole 710 and the left side or right side of the protrusion of the movable member Due to the suction force acting in between, it rotates in the clockwise direction or counterclockwise direction with the rotation axis as a fulcrum.

Next, an eighth embodiment of the present invention will be described with reference to FIG. 16, FIG. 17, and FIG . FIG. 16 is a diagram showing a schematic configuration of the actuator according to the present embodiment.

  The actuator 801 of the present embodiment is greatly different from the actuator 1 of the first embodiment. In the actuator 1, the second pole 11 and the third pole 12 are inclined from the outside toward the inside and below. In contrast, in the actuator 801 of the present embodiment, the second pole 11 and the third pole 12 have a crank portion 811 and a crank portion 812 having a crank shape, and the crank portion 811 and Reference numeral 812 denotes a point extending so as to cover the left end portion or the right end portion of the movable member 40.

  In the actuator 1, the movable member 40 is configured to have a substantially T-shape including the swinging portion 45 and the protrusion 46 protruding vertically upward from the center position of the swinging portion 45. In the actuator 801 of the form, the inclined surface 870 and the inclined surface 871 are formed in the diagonally downward direction at both ends of the swinging portion 45. In addition, in the structure of the actuator 801 and the actuator 1, the same code | symbol is attached | subjected to the same part and detailed description is abbreviate | omitted.

  In the actuator 801 of FIG. 16, the second pole 11 is bent in a crank shape to form a crank portion 811, and one surface 820 and another surface 821 of the crank portion 811 are formed. The other surface 821 is bent about 90 degrees with respect to the one surface 820. In addition, according to the torque which rotates the movable member 40, while the distance L of this surface 821, the surface 831, and the rocking | swiveling part 45 is set, the shape of a pole is set.

  In addition, the third pole 12 is bent in a crank shape to form a crank portion 812, and a surface 830 at the position of the crank portion 812 and another surface 931 are formed. The other surface 831 is provided by being bent at approximately 90 degrees with respect to the one surface 830.

  The crank portion 811 of the second pole 11 extends so as to cover the left end portion of the movable member 40, and the crank portion 812 of the third pole 12 extends the right end portion of the movable member 40. It extends so as to cover it. In the present embodiment, the crank portion 811 and the surface 820 of the second pole 11 have the polarity of the N pole, and the crank portion 812 and the surface 830 of the third pole 12 have the polarity of the S pole. Yes.

  Next, the operation of the actuator 801 will be described with reference to FIGS. 17 and 18. 17 and 18 show the rotation operation of the movable member of the actuator.

  First, when a current is passed through the coil 50 in the direction shown in FIG. 17A, the permanent magnet 30, the tip surface 16 of the first pole 10, the protrusion 46 of the movable member 40, the swinging portion. 45, an inclined surface 872 at the right end portion, a surface 831 of the crank portion 812, a surface 830 of the crank portion 812, the third pole 12, and a coupling portion 15 are generated in the counterclockwise direction (in the direction of the arrow). Then, the movable member 40 has a counterclockwise thrust acting between the protrusion 46 and the tip surfaces 16 and 17 of the first pole 10, and the surfaces 830 and 831 of the crank portion 812 and the movable member 40. Due to the counterclockwise suction force acting between the right end portion and the rotating shaft 41 as a fulcrum, the distal end surface of the protrusion 46 of the movable member 40 is the distal end surface 16 of the first pole 10. And the inclined surface 872 at the right end of the swinging portion 45 comes into contact with the surface 830 of the crank portion 812.

  Next, the direction is switched. The direction of current flow is reversed from the direction shown in FIG. 17A with respect to the coil 50, and current is passed through the coil 50 in the direction shown in FIG. 17B. In this case, the permanent magnet 30, the connecting portion 14, the second pole 11, the crank portion 811, the surface 821 of the crank portion, the inclined surface 871 at the left end of the swinging portion 45 of the movable member 40, the protrusion 46, the first portion. A counterclockwise magnetic flux (in the direction of the arrow) that sequentially passes through the tip surface 16 of the pole 10 is generated. In this case, compared with the first embodiment (FIG. 2), the surface 821 of the crank portion and the inclined surface 871 of the swinging portion 45 are close to each other. The magnetic flux density can be increased, and a large force (torque) can be generated in the movable member 40.

  Then, as shown in FIG. 18C, the movable member 40 includes a clockwise thrust acting between the protrusion 46 and the tip surfaces 15 and 16 of the first pole 10, and a crank portion 811. The clockwise suction force acting between the surfaces 830 and 831 and the inclined surface 872 at the left end of the movable member 40 rotates clockwise around the rotation shaft 41 as a fulcrum, and the tip of the protrusion 46 of the movable member 40 The surface comes into contact with the front end surface 17 of the first pole 10, and the inclined surface 871 at the left end portion of the swinging portion 45 faces the lower surface of the surface 820 of the crank portion 811.

  After the movable member 40 rotates in this manner, the permanent magnet 30, the connecting portion 14, the second pole 11, the surface 820 of the crank portion 811 and the surface 821 of the crank portion 811, and the left end portion of the swinging portion 45 of the movable member 40. Counter-clockwise (arrow direction) magnetic flux that passes through the inclined surface 871, the protrusion 46, and the tip surface 17 of the first pole 10 in this order is generated.

  As shown in FIG. 17A, in the state where the inclined surface 872 at the right end portion of the movable member 40 is in contact with the surface 830 of the crank portion 812, the inclined surface 871 at the left end portion of the movable member 40 is the crank portion 811. A crank portion 811 is provided at the tip of the surface 821 at a distance L, that is, so as to reduce the magnetic resistance of the gap portion. On the other hand, in a state where the inclined surface 871 at the left end portion of the movable member 40 is in contact with the surface 820 of the crank portion 811, the inclined surface 872 at the right end portion of the movable member 40 is separated from the tip of the surface 831 of the crank portion 812 by a distance L. The crank portion 812 is provided to reduce the state, that is, the magnetic resistance of the gap portion.

  Therefore, since the magnetic field in the case where the direction of the current flowing through the coil 50 is reversed is easily applied to the movable member 40, the movable member 40 is movable from the state in which the inclined surface 872 at the right end of the movable member 40 is in contact with the surface 830 of the crank portion 812. Transition to a state in which the inclined surface 871 at the left end portion of the member 40 is in contact with the surface 820 of the crank portion 811, that is, the torque at the time of switching the direction of the current to the coil 50 is increased, and the response of the actuator 801 is improved. Can do.

  As described above, in the actuator 801 of the present embodiment, the responsiveness of the opening / closing operation of a valve or the like driven by the actuator 801 can be improved, as in the actuator 1 of the first embodiment. In addition, in the actuator 801 of the present embodiment, compared to the actuator 1 of the first embodiment, the torque when rotating clockwise and counterclockwise about the rotation shaft 41 can be made uniform. it can. That is, in the case of the actuator 1 of the first embodiment, a predetermined torque is required when shifting from clockwise to counterclockwise, but in the actuator 801 of the eighth embodiment, the movable member 40 Since either one of the inclined surfaces 871 and 872 at the left and right end portions is in close proximity to either one of the surfaces 821 and 831 of the crank portions 811 and 812, the rotation proceeds from the clockwise direction to the counterclockwise direction. The torque can be increased at the start and the responsiveness can be improved.

  Specifically, at the start of switching the direction of current flow with respect to the coil 50, the torque is improved by 40% compared to the first embodiment, the rise of rotation is accelerated, and the responsiveness is improved. Further, at the end of switching the direction of current flow to the coil 50 (the state shown in FIG. 18C), the torque is reduced by 14%, but it can be limited to a range that does not hinder the rotation operation.

  Further, in the above-described eighth embodiment, the surfaces 821 and 831 of the crank portions 811 and 812 are linear, but a tab tail shape or any other shape that can reduce the magnetic resistance of the gap portion. May be formed. In the eighth embodiment, the surfaces 820 and 830 and the inclined surfaces 871 and 872 are inclined from the rotation angle of the movable member 40. However, the present invention is not limited to this. The shape may also be In the eighth embodiment, it is preferable that the crank portions 811 and 812 have a predetermined width so that magnetic saturation does not occur, and the surfaces 820, 821, 830, and 831 leak. It is preferable to give a predetermined width so as not to form the magnetic flux path. In addition, when the distance between the surface 820 and the surface 821 or between the surface 830 and the surface 831 is short, magnetic flux leakage occurs, so it is desirable that the design is made to the extent that magnetic flux leakage does not occur.

  Further, regarding the method of providing the surfaces 821, 831 of the crank portions 811 and 812 in the eighth embodiment to reduce the magnetic resistance of the gap portion, the actuator in the first to seventh embodiments is used. It can also be applied to.

In the first to eighth embodiments, the first pole 10 corresponds to the pole of the first electromagnet, the second pole 11 corresponds to the pole of the second electromagnet, and the third The pole 12 corresponds to the pole of the third electromagnet, the protrusion 46 corresponds to the protrusion, the movable member 40 corresponds to the movable member, the permanent magnet 30 corresponds to the permanent magnet, and the coil 50 corresponds to the coil. The pole 12 of the second electromagnet has a coil and corresponds to the pole of the second electromagnet that generates magnetic flux, and the pole 11 of the third electromagnet has the coil and generates magnetic flux. The coil 152 corresponds to the coil of the second electromagnet, the coil 151 corresponds to the coil of the third electromagnet, and the permanent magnet 231 corresponds to the second permanent magnet. The permanent magnet 232 corresponds to the third permanent magnet, and the protrusions 311 and 312 have a substantially dovetail shape. The permanent magnets 431 and 432 correspond to the permanent magnets arranged in the N pole and the S pole, the crank portion 811 corresponds to the tip portion of the pole of the second electromagnet, and the crank portion 812 corresponds to the third portion. The surface 810 corresponds to the first surface, the surface 811 corresponds to the second surface, the surface 820 corresponds to the third surface, and the surface 821 corresponds to the fourth surface. The inclined surfaces 871 and 872 correspond to the upper surface of the movable member.

  The preferred embodiments of the present invention have been described above. However, the present invention is not limited to the above-described embodiments, and various design changes can be made as long as they are described in the claims. For example, in the first embodiment described above, the permanent magnet is arranged so that the tip surface of the first pole 10 is divided into a magnetic pole surface having the polarity of the N pole and a magnetic pole surface having the polarity of the S pole. What is necessary is just to change the shape of a permanent magnet, a magnitude | size, and arrangement | positioning. In the seventh embodiment described above, the permanent magnet 631 and the permanent magnet 632 have magnetic pole faces parallel to the axes of the first pole 610 and the second pole 611, but the first pole The axis of 610 and the second pole 611 and the inclined pole face may be provided.

It is a figure which shows schematic structure of the actuator which concerns on the 1st Embodiment of this invention. The rotation operation | movement of the movable member of the actuator of FIG. 1 is shown. It is a figure which shows schematic structure of the actuator which concerns on the 2nd Embodiment of this invention. Fig. 4 shows a rotation operation of a movable member of the actuator of Fig. 3. It is a figure which shows schematic structure of the actuator which concerns on the 3rd Embodiment of this invention. Fig. 6 shows a rotation operation of a movable member of the actuator of Fig. 5. It is a figure which shows schematic structure of the actuator which concerns on the 4th Embodiment of this invention. FIG. 8 shows a rotating operation of a movable member of the actuator of FIG. 7. FIG. It is a figure which shows schematic structure of the actuator which concerns on the 5th Embodiment of this invention. 10 shows a rotation operation of a movable member of the actuator of FIG. It is a figure which shows schematic structure of the actuator which concerns on the 6th Embodiment of this invention. FIG. 12 shows the rotating operation of the movable member of the actuator of FIG. It is a figure which shows schematic structure of the actuator which concerns on the 7th Embodiment of this invention. FIG. 14 shows a rotating operation of a movable member of the actuator of FIG. It is a figure which shows the modification of the actuator which concerns on the 7th Embodiment of this invention. It is a figure which shows schematic structure of the actuator which concerns on the 8th Embodiment of this invention. FIG. 17 is a diagram illustrating a rotation operation of a movable member of the actuator of FIG. 16. FIG. 17 is a diagram illustrating a rotation operation of a movable member of the actuator of FIG. 16.

Explanation of symbols

1, 101, 201, 301, 401, 501, 601, 701 Actuator 10, 310, 410 First magnetic pole 11 Second magnetic pole 12 Third magnetic pole 30 Permanent magnet 40 Movable members 50, 151, 152 Coils 231, 232 431, 432 Permanent magnet 610, 710 First magnetic pole 611, 711 Second magnetic pole 631, 632 Permanent magnet 640 Movable member 650 Coil 820, 821, 830, 831 Surface 871, 872 Inclined surface

Claims (10)

A pole of a first electromagnet disposed in a central portion of a stator composed of three poles, having a coil and generating magnetic flux;
A pole of a second electromagnet that is one pole of the stator and does not have a coil;
One pole of the stator, disposed opposite to the pole of the second electromagnet with respect to the pole of the first electromagnet, and a pole of a third electromagnet having no coil;
A movable member provided with an end face of the protrusion facing the first magnetic pole face of the pole of the first electromagnet, and rotatably supported;
It is incorporated in the pole of the first electromagnet, and is arranged to divide the pole of the first electromagnet into a part on the pole side of the second electromagnet and a part on the pole side of the third electromagnet. With permanent magnets,
By conducting energization control so that the direction of the current flowing in the coil of the first electromagnet pole changes, the movable member passes through the movable member by the magnetic flux generated by energization of the poles of the first to third electromagnets and the magnetic flux of the permanent magnet. An actuator that generates a magnetic flux to rotate and drives the movable member to rotate. A pole of a first electromagnet disposed in the central part of a stator composed of three poles and having no coil;
One pole of the stator, a pole of a second electromagnet having a coil and generating magnetic flux;
One pole of the stator, disposed on the opposite side of the pole of the first electromagnet from the pole of the second electromagnet, and having a coil and generating a magnetic flux When,
A movable member provided with an end face of the protrusion facing the first magnetic pole face of the pole of the first electromagnet, and rotatably supported;
It is incorporated in the pole of the first electromagnet, and is arranged to divide the pole of the first electromagnet into a part on the pole side of the second electromagnet and a part on the pole side of the third electromagnet. With permanent magnets,
By controlling the energization so that the direction of the current flowing through the coil of the second electromagnet and the coil of the third electromagnet changes, the magnetic flux generated by the energization of the poles of the first to third electromagnets and the permanent An actuator characterized in that a magnetic flux passing through the movable member is generated by a magnetic flux of a magnet, and the movable member is rotationally driven. A second permanent magnet that is incorporated in the pole of the second electromagnet and has a second magnetic pole surface that contacts the end of the movable member on the pole side of the second electromagnet when the movable member rotates. When,
It is incorporated in the pole of the third electromagnet, and when the movable member rotates, the end of the movable member on the pole side of the third electromagnet contacts and has a polarity different from that of the second magnetic pole surface. The actuator according to claim 1, further comprising a third permanent magnet having three magnetic pole faces.   The actuator according to any one of claims 1 to 3, wherein a first magnetic pole surface of the pole of the first electromagnet is formed by a substantially dovetail-shaped concave portion. A substantially dovetail-shaped magnetic flux generating portion that has a coil disposed in a central portion of a stator composed of two poles and generates magnetic flux;
A pole of a first electromagnet having a first magnetic pole face which is one of the poles of the magnetic flux generating portion and has a substantially dovetail-shaped recess;
A pole of a second electromagnet having a second magnetic pole surface which is a pole opposite to the pole of the first electromagnet of the magnetic flux generating portion and has a substantially dovetail-shaped recess;
A first permanent magnet built into the pole of the first electromagnet and having a pole face parallel or inclined to the axis of the pole of the first electromagnet;
A second permanent magnet built into the pole of the second electromagnet and having a pole face parallel or inclined to the axis of the pole of the second electromagnet;
A projecting portion facing each of the first and second magnetic pole surfaces, and a movable member supported rotatably.
By performing energization control so that the direction of the current flowing through the coil of the magnetic flux generation portion changes, the movable by the magnetic flux generated by the energization of the poles of the first and second electromagnets and the magnetic flux of the first and second permanent magnets. An actuator that generates magnetic flux passing through a member and rotationally drives the movable member. A pole of a first electromagnet disposed in a central portion of a stator composed of three poles, having a coil and generating magnetic flux;
A pole of a second electromagnet that is one pole of the stator and does not have a coil;
One pole of the stator, disposed opposite to the pole of the second electromagnet with respect to the pole of the first electromagnet, and a pole of a third electromagnet having no coil;
A movable member provided with an end face of the protrusion facing the first magnetic pole face of the pole of the first electromagnet, and rotatably supported;
It is incorporated in the first magnetic pole surface of the pole of the first electromagnet, and the first magnetic pole surface of the pole of the first electromagnet is connected to the pole side portion of the second electromagnet and the third electromagnet. A permanent magnet disposed on the N pole and the S pole so as to be divided into the pole part and the center,
By conducting energization control so that the direction of the current flowing in the coil of the first electromagnet pole changes, the movable member passes through the movable member by the magnetic flux generated by energization of the poles of the first to third electromagnets and the magnetic flux of the permanent magnet. An actuator that generates a magnetic flux to rotate and drives the movable member to rotate. A pole of a first electromagnet disposed in the central part of a stator composed of three poles and having no coil;
One pole of the stator, a pole of a second electromagnet having a coil and generating magnetic flux;
One pole of the stator, disposed on the opposite side of the pole of the first electromagnet from the pole of the second electromagnet, and having a coil and generating a magnetic flux When,
A movable member provided with an end face of the protrusion facing the first magnetic pole face of the pole of the first electromagnet, and rotatably supported;
It is incorporated in the first magnetic pole surface of the pole of the first electromagnet, and the magnetic pole surface of the pole of the first electromagnet is located on the pole side portion of the second electromagnet and the pole side of the third electromagnet. A permanent magnet arranged on the north and south poles so as to be divided into a central part and
By controlling the energization so that the direction of the current flowing through the coil of the second electromagnet and the coil of the third electromagnet changes, the magnetic flux generated by the energization of the poles of the first to third electromagnets and the permanent An actuator characterized in that a magnetic flux passing through the movable member is generated by a magnetic flux of a magnet, and the movable member is rotationally driven. A second permanent magnet that is incorporated in the pole of the second electromagnet and has a second magnetic pole surface that contacts the end of the movable member on the pole side of the second electromagnet when the movable member rotates. When,
It is incorporated in the pole of the third electromagnet, and when the movable member rotates, the end of the movable member on the pole side of the third electromagnet contacts and has a polarity different from that of the second magnetic pole surface. The actuator according to claim 6, further comprising a third permanent magnet having three magnetic pole faces. A pole of a first electromagnet disposed in a central portion of a stator composed of three poles, having a coil and generating magnetic flux;
A pole of a second electromagnet that is one pole of the stator and does not have a coil;
One pole of the stator, disposed opposite to the pole of the second electromagnet with respect to the pole of the first electromagnet, and a pole of a third electromagnet having no coil;
A movable member provided with an end face of the protrusion facing the first magnetic pole face of the pole of the first electromagnet, and rotatably supported;
It is incorporated in the pole of the first electromagnet, and is arranged to divide the pole of the first electromagnet into a part on the pole side of the second electromagnet and a part on the pole side of the third electromagnet. With permanent magnets,
By conducting energization control so that the direction of the current flowing in the coil of the first electromagnet pole changes, the movable member passes through the movable member by the magnetic flux generated by energization of the poles of the first to third electromagnets and the magnetic flux of the permanent magnet. Generating magnetic flux to rotate the movable member,
The poles of the second electromagnet and the poles of the third electromagnet are provided to extend to the vicinity of the movable region at the end of the movable member when the movable member is rotationally driven. An actuator characterized by. The tip of the pole of the second electromagnet has a first surface and a second surface forming an L-shape,
The tip of the pole of the third electromagnet has a third surface and a fourth surface that form an inverted L shape that is axisymmetric to the L shape,
The movable member is pivotally supported at the center, and performs a swinging motion that repeats the first state and the second state,
The first surface is provided so as to come into contact with an upper end surface of the movable member when the movable member is in the first state, and the third surface is provided with the movable member when the movable member is in the second state. The second surface extends to the vicinity of the upper end surface of the movable member that was in contact with the first surface when the movable member is in the second state. The fourth surface is provided to extend to the vicinity of the upper end surface of the movable member that is in contact with the third surface when the movable member is in the first state. Item 10. The actuator according to Item 9.

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