JP6182407B2 - Shut-off valve - Google Patents

Description

  The present invention relates to a shut-off valve using a bistable moving means that uses a mover and a stator, moves the mover between two positions, and holds the mover at either position.

  Conventionally, as a gas emergency shut-off device installed in city gas and LP gas supply pipes and gas meters, solenoid type and stepping motors that can be electrically shut off / returned (closed / opened) bidirectionally There is a battery-driven shut-off valve of the type.

  For example, in Patent Document 1, a spring (compression spring) is used for urging in the valve closing direction, a permanent magnet attraction is used for holding the valve open state, and a permanent magnet is used when shutting off (valve closed) from the valve open state. Applying a reverse magnetic field with an electromagnetic coil cancels the attractive force between the fixed iron core to which the permanent magnet is connected and the plunger, pulls the plunger away from the fixed iron core, and shuts off by the spring's urging force. Self-holding solenoid solenoid type shut-off valve capable of bidirectional operation that attracts and holds the fixed iron core to which the permanent magnet is connected by applying an attractive force that overcomes the gas pressure and spring biasing force by the electromagnetic coil and pulling back the plunger Is disclosed.

  For example, Patent Document 2 discloses a self-holding stepping motor type shut-off valve that moves a valve element using a lead screw driven by a stepping motor to open and close the valve and maintain its state. .

Japanese Patent Laid-Open No. 7-71637 Japanese Patent Laid-Open No. 11-2351

  However, in the self-holding electromagnetic solenoid type shut-off valve described in Patent Document 1 described above, when the valve body is held in the open state, a permanent magnet is generated due to gas flow or mechanical shock. A force larger than the suction holding force is applied, the plunger moves away from the fixed iron core, and the urging force of the spring (compression spring) moves the valve body and the plunger in the shut-off (closed) direction to shut off (close the valve). There's a problem. Although it is unlikely to occur under actual use conditions, it is conceivable that the valve is opened from the closed state in the reverse manner described above.

  Further, in the self-holding electromagnetic solenoid type shut-off valve described in Patent Document 1 described above, when the valve body in the closed state is returned to the open state, the plunger is in the state farthest from the fixed iron core. In addition, the electromagnetic coil must generate a suction force that overcomes the gas pressure and the biasing force of the spring, and the plunger must be pulled back. However, since the electromagnetic force is inversely proportional to the square of the distance, there is a problem that a large amount of power is required. .

  On the other hand, the self-holding stepping motor type shut-off valve as described in Patent Document 2 has high impact resistance in principle because the valve body is mechanically restrained by a lead screw, and the electromagnetic solenoid described above. Although the problem of erroneous opening and closing in the equation is solved, since the moving distance of the valve body per pulse of the driving voltage is very small, many pulses are applied over a long time for the shut-off / return (valve closing / opening) operation There is a problem that power consumption becomes large.

The present invention has been made to solve such a problem. When the valve body is held in an open state, an excessive force is applied due to gas flow or mechanical shock, and the valve body is shut off ( Even if the valve body moves in the valve closing direction, it automatically returns to the valve open state (swiftly) without being shut off (closed). Conversely, even if the valve element moves from the valve closed state to the valve opening direction. An object of the present invention is to provide a shut-off valve that automatically returns (closely) to a closed state without maintaining the open state.
Further, the electric power required for the return (opening) operation is smaller (in principle) than that of Patent Document 1, and further, it is necessary for the shut-off / return (valve closing / opening) operation of Patent Document 2. An object is to provide a shut-off valve with low power consumption.

  In order to achieve such an object, the present invention provides a valve body movably provided in a movable axis direction, a flange having an opening, one end communicating with the opening of the flange, and the other end being closed. A permanent chamber in which a plurality of magnetic poles are arranged so as to sandwich the movable shaft in a direction orthogonal to the movable axis, which is disposed in the compartment, is movable in the direction of the movable shaft, is rotatably held around the movable shaft. A mover provided with a magnet, a mover rotating means for rotating the mover and changing the arrangement of the magnetic poles of the permanent magnet of the mover between the first arrangement and the second arrangement, and sandwiching the mover When the arrangement of the magnetic poles of the permanent magnet of the mover is in the first arrangement, the mover is magnetically attracted and held, and the arrangement of the magnetic poles of the permanent magnet of the mover is the second arrangement. In the case where the movable member is magnetically repelled by a member including a permanent magnet. If the arrangement of the magnetic poles of the permanent magnets of the mover is in the second arrangement, the mover is magnetically held by holding the permanent of the mover. When the magnetic pole arrangement of the magnet is in the first arrangement, the bistable moving means including the second stator composed of a member including a permanent magnet that repels the mover, and the mover of the bistable moving means Power is transmitted to the valve body through the opening of the flange, and power transmission means for operating the valve body to the open or closed position is provided.

  In the present invention, the mover is a permanent magnet that is movable in the direction of the movable axis, is held rotatably about the movable axis, and has a plurality of magnetic poles arranged so as to sandwich the movable axis in a direction perpendicular to the movable axis. By providing and rotating, the arrangement of the magnetic poles of the permanent magnet can be switched between the first arrangement and the second arrangement.

  In the present invention, the first stator is composed of a member including a permanent magnet, is located on one side of the movable axis direction with the mover interposed therebetween, and the arrangement of the magnetic poles of the permanent magnet of the mover is the first arrangement. In some cases, the mover is magnetically attracted and held, and when the magnetic pole arrangement of the permanent magnet of the mover is in the second arrangement, the mover is magnetically repelled. Similar to the first stator, the second stator is also composed of a member including a permanent magnet, and is located on the other side in the movable axis direction with the mover interposed therebetween, and the arrangement of the magnetic poles of the permanent magnet of the mover is the first. In the case of the arrangement 2, the mover is magnetically attracted and held, and when the arrangement of the magnetic poles of the permanent magnet of the mover is in the first arrangement, the mover is magnetically repelled.

  That is, in the present invention, the arrangement of the magnetic poles of the permanent magnet of the mover (hereinafter simply referred to as the arrangement of the magnetic poles of the mover) is in the first arrangement, and the mover is magnetically attracted to the first stator. In this case, when the mover is rotated to place the magnetic pole in the second arrangement, the magnetic attractive force between the mover and the first stator disappears, and the mover and the first stator Magnetic repulsive force is generated between them.

  As a result, the mover leaves the first stator, approaches the second stator, and moves toward the second stator due to the resultant magnetic attraction force generated between the second stator and the second stator. Magnetically attracted to the second stator. In this case, the magnetic attraction force is larger than the magnetic repulsion force for moving the mover from the first stator side to the second stator side. The power of the mover is transmitted to the valve body through the opening of the flange, and the valve body is operated (opened) to an open position, for example.

  In the present invention, when the arrangement of the magnetic poles of the mover is in the second arrangement and the mover is magnetically attracted to the second stator, the arrangement of the magnetic poles is made by rotating the mover. With this arrangement, the magnetic attractive force between the mover and the second stator disappears, and a magnetic repulsive force is generated between the mover and the second stator.

  As a result, the mover leaves the second stator, approaches the first stator, and moves toward the first stator due to the resultant magnetic attraction force generated between the first stator and the first stator. Magnetically attracted to one stator. In this case, the magnetic attraction force is larger than the magnetic repulsion force for moving the mover from the second stator side to the first stator side. The power of the mover is transmitted to the valve body through the opening of the flange, and the valve body is operated (closed) to a closed position, for example.

  In the present invention, for example, when the arrangement of the magnetic poles of the mover is in the first arrangement and the mover is magnetically attracted to the first stator, the impact or temporary impact on the second stator Suppose that excessive force is applied and the mover moves in the direction of the second stator. In this case, the mover moves in the direction of the second stator in a state where the arrangement of the magnetic poles is in the first arrangement. When the mover approaches the second stator, a magnetic repulsive force is generated between the mover and the second stator.

  As a result, the mover moves away from the second stator, approaches the first stator, and moves toward the first stator due to the resultant magnetic attraction force generated between the first stator and the first stator. Magnetically attracted to one stator. That is, even if the mover moves to the other side in the movable axis direction (for example, the valve opening side), the mover is not latched at the position moved to the other side in the movable axis direction, and automatically moves in the movable axis direction. It returns to the latch (original latch state) at the position moved to one side (for example, the valve closing side).

  In the present invention, for example, when the arrangement of the magnetic poles of the mover is in the second arrangement and the mover is magnetically attracted to the second stator, an impact or temporary impact on the first stator Suppose that excessive force is applied and the mover has moved toward the first stator. In this case, the mover moves in the direction of the first stator in a state where the arrangement of the magnetic poles is in the second arrangement. When the mover approaches the first stator, a magnetic repulsive force is generated between the mover and the first stator.

  As a result, the mover moves away from the first stator, approaches the second stator, and moves toward the second stator side by the resultant force with the magnetic attraction force generated between the second stator and the second stator. Magnetically attracted to the second stator. That is, even if the mover moves to one side (for example, the valve closing side) in the movable axis direction, the mover is not latched at the position moved to one side in the movable axis direction, and automatically moves in the movable axis direction. It returns to the latch (original latch state) at the position moved to the other side (for example, the valve opening side).

As described above, in the present invention, unless the arrangement of the magnetic poles of the mover is changed by rotating the mover, the switching of the latch from the first stator side to the second stator side of the mover, the second The latch cannot be switched from the stator side to the first stator side. In addition, without changing the arrangement of the magnetic poles of the mover, the mover latched on the first stator side moves to the second stator side, and the mover latched on the second stator side. When the child moves to the first stator side, it automatically returns to the latch on the original stator side. This is due to the movement of the mover in the direction of the movable axis, that is, to change the open / close state of the shut-off valve, by adding a lock mechanism called rotation of the mover. By adding this lock mechanism, the valve is opened. / The valve closed state can be reliably maintained, and safety is improved.

  Moreover, in this invention, a permanent magnet is used for both a needle | mover and a stator, and the main motive power for moving to a movable-axis direction is a stator (permanent magnet) by the side of a movement with respect to a needle | mover (permanent magnet). The magnetic repulsive force and the magnetic attraction force of the destination side stator (permanent magnet) are used at the same time, and the rotational force for rotating the mover is used as pilot power to change the position of the magnetic pole. For example, it is only necessary to instantaneously apply a magnetic field from a position close to the mover (permanent magnet), and a conventional solenoid (Patent Document 1) or stepping motor (Patent Document 2) is used. It is possible (in principle) to operate with less electric power than when used as the main power for movement in the direction of the movable axis. In particular, with respect to Patent Document 2, since the voltage (pulse) application time is significantly shortened, power saving can be realized. Therefore, it is suitable for a battery-driven shut-off valve.

  In the present invention, the following configuration examples are conceivable as configurations of the first stator and the second stator. As a first configuration example, the magnetic pole direction is a direction orthogonal to the movable axis, the magnetic pole directions are the same direction, and are separated so as not to contact the mover in the direction orthogonal to the movable axis across the movable axis. A set of permanent magnets arranged in the above manner is provided, and the set of permanent magnets of the first stator and the set of permanent magnets of the second stator are opposed to each other in the direction of the movable axis of each permanent magnet. The magnetic poles are arranged on one side and the other side in the movable axis direction with the mover interposed therebetween so that the magnetic poles are different from each other.

  As a second configuration example, a cylindrical permanent magnet is provided which is arranged so that the movable shaft and the center are approximately aligned and has an inner diameter so as not to contact the mover. One of the cylindrical permanent magnet and the cylindrical permanent magnet of the second stator is moved in the direction of the movable axis with the mover interposed therebetween so that the magnetic poles facing each other in the direction of the movable axis of the permanent magnet are different from each other. It is arranged on the side and the other side.

  As a third configuration example, the magnetic pole direction is parallel to the movable axis, each magnetic pole direction is opposite to the other, and does not contact the mover in a direction perpendicular to the movable axis across the movable axis. A pair of permanent magnets arranged apart from each other is provided, and one set of permanent magnets of the first stator and one set of permanent magnets of the second stator are arranged in the direction of the movable axis of each permanent magnet. The movable poles are arranged on one side and the other side of the movable axis so that the opposing magnetic poles have different polarities.

  With such a configuration, the permanent magnet of the mover and the permanent magnet of the stator are arranged so as not to come into contact with each other, so that no mechanical shock is applied to the magnet during operation and state maintenance. Characteristics can be suppressed, impact force and adsorption sound on the magnet can be suppressed, and compliance can be maintained, so that mechanical shock-absorbing mechanism and spring mechanism are omitted as with conventional solenoids. The merit that it can also be generated.

  Further, in the present invention, as a further safety measure, the mover is moved by a magnetic attraction force between the mover and a yoke that applies a rotational force to the mover so that the mover does not rotate unintentionally due to an impact in a normal holding state. It is preferable that a rotational holding force is exerted on the outer peripheral side of the.

  In the present invention, as the permanent magnets (first and second permanent magnets) of the mover, two magnetic poles are considered as the simplest example, but four magnetic poles (for example, cylindrical radial magnetization (cylindrical) In this case, since there are also magnetic poles on the inner peripheral side, it is possible to similarly construct a multi-pole having eight magnetic poles)) or more.

  Further, in the present invention, instead of the bistable moving means described above, it is disposed in the compartment, is movable in the direction of the movable axis, is held rotatably about the movable axis, and is movable in the direction perpendicular to the movable axis. A plurality of magnetic poles are arranged so as to sandwich the shaft, and are provided with first and second permanent magnets that are spaced apart from each other in the direction of the movable shaft and connected to each other by a nonmagnetic member, and relative to each other across the movable shaft of the second permanent magnet. The distance between the magnetic poles to be moved is larger than the distance between the magnetic poles facing each other across the movable axis of the first permanent magnet, and a magnetic field is applied to the second permanent magnet to rotate the mover, The mover rotating means for switching the arrangement of the magnetic poles of the first and second permanent magnets between the first arrangement and the second arrangement, and one side in the movable axis direction with the first permanent magnet interposed therebetween When the magnetic pole arrangement of the first permanent magnet is in the first arrangement, the first permanent magnet When the magnetic pole of the first permanent magnet is in the second arrangement, the first stator composed of a member including a permanent magnet that magnetically repels the first permanent magnet, When the first permanent magnet is located on the other side in the movable axis direction with the first permanent magnet sandwiched and the magnetic pole of the first permanent magnet is in the second arrangement, the first permanent magnet is magnetically attracted and held. When the arrangement of the magnetic poles of the magnet is in the first arrangement, the bistable moving means including the second stator constituted by a member including a permanent magnet that repels the first permanent magnet is used. Also good. In this way, the movable element generates a rotational force between the first permanent magnet that generates a moving force in the direction of the movable axis and a latching force (an anti-rotation force) and the movable element rotating means. The distance between the magnetic poles facing each other across the movable axis of the second permanent magnet is made larger than the distance between the magnetic poles facing each other across the movable axis of the first permanent magnet. As a result, it is possible to obtain a large torque with a smaller rotational force and rotate the mover, so that further power saving can be realized.

  According to the present invention, the mover is configured to include a permanent magnet in which a plurality of magnetic poles are arranged so as to sandwich the movable axis in a direction orthogonal to the movable axis, and is positioned on one side of the movable axis with the mover interposed therebetween. A member including a permanent magnet that magnetically holds the mover when the arrangement of the mover magnetic pole is in the first arrangement, and that magnetically repels the mover when the arrangement of the mover magnetic pole is in the second arrangement. When the magnetic pole of the mover is in the second arrangement, the mover is magnetically attracted and held, and the movable element is movable. When the arrangement of the magnetic poles of the child is in the first arrangement, a second stator composed of a member including a permanent magnet for repelling the mover is provided, and the mover is rotated by the mover rotating means. Because the arrangement of the magnetic poles was changed between the first arrangement and the second arrangement Even if the mover is impacted in the other direction (valve closing direction or valve opening direction) or temporarily excessive, and the mover moves in the other direction, the mover is latched in the other direction. Therefore, the mover automatically returns to the latch in the original direction, so that the valve open / close state can be reliably maintained, and safety is improved.

  In addition, according to the present invention, the rotational force for rotating the mover is used as pilot power only to change the arrangement of the magnetic poles of the mover, so that, for example, a position close to the permanent magnet of the mover It is only necessary to apply a magnetic field instantaneously from a conventional solenoid (Patent Document 1) or a stepping motor (Patent Document 2) (in principle, compared to the case where it is used as the main power for movement in the movable axis direction). B) It is possible to operate with less power. In particular, with respect to Patent Document 2, since the voltage (pulse) application time is significantly shortened, power saving can be realized. As a result, the electric power required for the return (opening) operation is smaller (in principle) than that of Patent Document 1, and further, it is necessary for the shutoff / return (valve closing / opening) operation of Patent Document 2. It is possible to provide a shut-off valve with low power consumption.

The figure which shows the structure of the principal part of one Embodiment (Embodiment 1) which concerns on this invention (The state in which the needle | mover was latched in the state which moved to the one side of the movable axis direction (valve closed state)) FIG. The figure which shows the structure of the principal part of one Embodiment (Embodiment 1) of the cutoff valve which concerns on this invention (The state in which the needle | mover was latched in the state which moved to the other side of the movable axis direction (valve open state)) FIG. FIG. 3 is a diagram showing an example in which a mover is composed of a plurality of permanent magnets in the first embodiment. 6 is a diagram illustrating an example in which the movable range of the mover is limited in the first embodiment. FIG. FIG. 3 is a diagram showing an example in which a stator is a cylindrical permanent magnet in the first embodiment. FIG. 3 is a diagram illustrating an example in which a stator is configured using a permanent magnet having a circular magnetic pole surface (segment type permanent magnet) in the first embodiment. It is a figure which shows the example which connected the surface of the direction opposite to the movable shaft of a set of permanent magnets by the yoke of cross-sectional "U" shape, and was set as the stator. It is a figure which shows the modification of the magnetic pole direction of the permanent magnet of a stator. It is a figure which shows the example which made the shape of the other edge part of the yoke which opposes a needle | mover in the direction substantially orthogonal to a movable axis | shaft into the flat surface. It is a figure which shows the example which connected or integrated the other edge part of the yoke which opposes on both sides of a needle | mover from the direction substantially orthogonal to a movable axis. It is a figure which shows the example which made the shape of the other edge part of the yoke which opposes a needle | mover across from the direction substantially orthogonal to a movable axis | shaft asymmetrical. It is a figure which shows the example which provided the notch in the other edge part of the yoke which opposes on both sides of a needle | mover from the direction substantially orthogonal to a movable axis | shaft. It is a figure which shows the example which made the line which connects the center of the edge part of the yoke which opposes across a needle | mover from the direction substantially orthogonal to a movable axis, and a movable axis not cross. It is a figure which shows the example which shifted the center of the yoke end part which pinches | interposes a needle | mover from the direction substantially orthogonal to a movable axis to the both sides of a needle | mover within the plane orthogonal to a movable axis. It is a figure which shows the example using a set of electromagnetic coils arrange | positioned so that the axial center may be substantially corresponded on both sides of a movable axis | shaft, and the end of the core may be made to oppose. It is a figure which shows the other structural example of the mechanism (rotational force transmission suppression means) which suppresses transmission of the rotational force to a valve body. It is a figure which shows another structural example of the rotation prevention mechanism of a valve body. It is a figure which shows another structural example of the rotation prevention mechanism of a valve body. It is a figure which shows the structure of the principal part at the time of making the permanent magnet of a needle | mover into 4 magnetic poles. It is a figure which shows arrangement | positioning of the yoke which comprises the needle | mover rotation means at the time of making the 1st and 2nd permanent magnet of a needle | mover into 4 magnetic poles. It is a figure which shows the example which formed the chamfering part in both the edge which adjoins and opposes a needle | mover and a stator. It is a figure which shows the structure of the principal part of other embodiment (Embodiment 2) of the cutoff valve which concerns on this invention.

Hereinafter, the present invention will be described in detail with reference to the drawings.
[Embodiment 1]
FIG. 1 is a diagram showing a configuration of a main part of an embodiment (first embodiment) of a shut-off valve according to the present invention (FIG. 1 (a) is a side sectional view, FIG. 1 (b) is FIG. 1 (a)). FIG. 1C is a cross-sectional view taken along line AA in FIG. 1C, and FIG. 1C is a cross-sectional view taken along line BB in FIG.

  In FIG. 1, 1 (1A) is a mover, and shafts 2-1 and 2-2 are connected to both ends thereof. The mover 1 is a permanent magnet, and the shafts 2-1 and 2-2 are non-magnetic. Further, cylindrical sliding bodies (nonmagnetic members) 3-1 and 3-2 are inserted and fixed (press-fitted) into the shafts 2-1 and 2-2. In the following, an integral body composed of the movable element 1, the shafts 2-1 and 2-2, and the sliding bodies 3-1 and 3-2 is referred to as a movable body and is denoted by reference numeral 4.

  The movable body 4 is provided so as to be movable in the axial direction (Z-axis direction) of the shafts 2-1 and 2-2. That is, the movable body 4 (movable element 1) is provided so as to be movable in the movable axis direction with the Z-axis direction as the movable axis direction. Further, it is held rotatably about the Z axis. Hereinafter, the Z axis is referred to as a movable axis.

  The mover 1 has a cylindrical shape (cylindrical permanent magnet) and is magnetized in the radial direction. In this example, magnetic poles facing each other across the movable axis Z are arranged in a direction orthogonal to the movable axis Z, and one surface side (upper side in the state of FIG. 1) facing the movable axis Z is S. The pole and the other surface side (the lower side in the state of FIG. 1) are N poles.

  In FIG. 1, 5 is a first stator provided on one side of the movable axis direction with the mover 1 interposed therebetween, and 6 is a second fixed member provided on the other side of the movable axis direction with the mover 1 interposed therebetween. A child.

  The first stator 5 has a magnetic pole direction perpendicular to the movable axis Z, the magnetic pole directions are the same, and the movable element 1 is perpendicular to the movable axis Z across the movable axis Z. It is composed of a pair of permanent magnets 7-1 and 7-2 and a cylindrical yoke 7-3 arranged so as not to contact each other. In this example, the N pole of the permanent magnet 7-1 is the mover 1 side, the S pole is the opposite side of the mover 1, the S pole of the permanent magnet 7-2 is the mover 1 side, and the N pole is movable. It is the side opposite to the child 1 and is fixed to the inner peripheral surface of the cylindrical yoke 7-3. The cylindrical yoke 7-3 has an effect of effectively suppressing the magnetic flux leakage to the surroundings while allowing the magnetic fluxes of the permanent magnets 7-1 and 7-2 to work efficiently.

  The second stator 6 has a magnetic pole direction perpendicular to the movable axis Z, the magnetic pole directions are the same, and the movable element 1 is perpendicular to the movable axis Z across the movable axis Z. It is composed of a pair of permanent magnets 8-1 and 8-2 and a cylindrical yoke 8-3 which are arranged so as not to contact each other. In this example, the S pole of the permanent magnet 8-1 is the mover 1 side, the N pole is the opposite side of the mover 1, the N pole of the permanent magnet 8-2 is the mover 1 side, and the S pole is movable. It is the side opposite to the child 1 and is fixed to the inner peripheral surface of the cylindrical yoke 8-3. The cylindrical yoke 8-3 has an effect of suppressing the leakage of magnetic flux to the surroundings while allowing the magnetic fluxes of the permanent magnets 8-1 and 8-2 to work efficiently.

  That is, in this example, one set of permanent magnets 7-1 and 7-2 of the first stator 5 and one set of permanent magnets 8-1 and 8-2 of the second stator 6 are respectively The permanent magnets are arranged on one side and the other side in the movable axis direction with the mover 1 therebetween so that the magnetic poles facing the movable axis direction are different from each other.

  The length l of the movable element 1 in the direction of the movable axis is the permanent magnets 7-1 and 7 constituting the first stator 5 arranged on one side and the other side in the movable axis direction with the movable element 1 interposed therebetween. -2 and the opposing surface distance L of the permanent magnets 8-1 and 8-2 constituting the second stator 6.

  Further, the directions of the magnetic poles of the permanent magnets 7-1, 7-2 and 8-1, 8-2 of the stators 5 and 6 are perpendicular to the movable axis Z as shown in FIG. When the direction of the line L1 is the reference direction, it is inclined by θ with respect to this reference direction.

  Further, the movable body 4 is a compartment formed by a flange (nonmagnetic member) 9 and a seal tube (nonmagnetic member) 10, that is, a space where one end communicates with the opening 9a of the flange 9 and the other end is closed. The shaft 2-1 of the movable body 4 extends outside the compartment 11 through the opening 9 a of the flange 9. The seal tube 10 is integrally or hermetically connected so that one end communicates with the opening 9a of the flange 9, and the other end is closed. Further, the flange 9 has a flange surface as an attachment portion to the flow path.

  In FIG. 1, reference numeral 12 denotes a flow path by contact / separation between a valve rubber disposed on the surface side of the movable element 1 in the direction of the movable axis and a valve seat (not shown) formed in the flow path. The shaft 2-1 of the movable body 4 is rotatably attached to the valve body 12. That is, the shaft 2-1 of the movable body 4 passes through the through hole 12a and reaches the inside of the valve body 12, and a spherical surface (curved surface) portion and a retaining ring 13 are attached to the tip of the shaft 2-1, and the rotational sliding portion of the movable body 4 It is said that. The valve body 12 has a plurality of guide holes 12b formed on the back side thereof, and pins 14 provided on the flange 9 are inserted into the holes 12b. The valve body 12 is guided to move in the direction of the movable axis by using a pin 14 provided on the flange 9 as a guide, and the rotation about the movable axis Z is restricted (blocked) by the pin 14.

  In FIG. 1, reference numeral 15 (15A) designates a magnetic field of a permanent magnet of the mover 1 (hereinafter referred to as “move” 1) by rotating the mover 1 by applying a magnetic field in the forward / reverse direction to the mover 1 from a direction substantially orthogonal to the movable axis Z. This is a mover rotating means for switching the arrangement of the movable element 1 between the first arrangement and the second arrangement.

  The mover rotating means 15 includes an electromagnetic coil 16 and yokes 17-1 and 17-2 in which one end is connected to or integrated with one end and the other end of the core of the electromagnetic coil 16. Yes.

  In this mover rotating means 15, the other ends of the yokes 17-1 and 17-2 are opposed to each other with the mover 1 sandwiched from a direction substantially orthogonal to the movable axis Z. That is, they are generally opposed to a pair of adjacent magnetic poles on the outer peripheral surface of the mover 1. Further, the other ends of the yokes 17-1 and 17-2 have an arc shape in accordance with the shape of the outer peripheral surface of the mover 1.

[Normal latch operation (valve open / close operation)]
The state of FIG. 1 shows a state where the mover 1 is rotated by the mover rotating means 15 and the arrangement of the magnetic poles of the mover 1 is switched to the first arrangement. In this first arrangement, as shown in FIG. 1, the magnetic pole of the mover 1 (columnar permanent magnet) has an S pole on the upper side and an N pole on the lower side.

  In this state, the mover 1 is magnetically attracted to the stator 5 from the outside of the compartment 11. That is, the stator 5 pulls the movable element 1 and latches (sucks and holds) it. Thereby, the valve body 12 is stopped (maintains the closed state) in a state where it has moved to one side of the movable axis direction (left direction shown in FIG. 1A), that is, in a state where it has moved to the valve closing side. .

  In the state shown in FIG. 1, after the mover 1 is rotated by the mover rotating means 15, that is, after energization of the electromagnetic coil 16 is performed, the energization of the electromagnetic coil 16 is cut off (non-excited state). Is shown.

  In the non-excited state of the electromagnetic coil 16, the mover 1 is stationary in a state where the direction of the magnetic pole is inclined by θ along the direction of the magnetic pole of the stator 5 due to the magnetic attraction force with the stator 5. doing.

  From this state, it is assumed that the mover 1 is rotated (turned 180 °) by the mover rotating means 15 and the arrangement of the magnetic poles of the mover 1 is switched to the second arrangement. That is, it is assumed that the position of the magnetic pole of the mover 1 is changed so that the lower side is the S pole and the upper side is the N pole. Then, the magnetic attractive force between the mover 1 and the first stator 5 disappears, and a magnetic repulsive force is generated between the mover 1 and the first stator 5.

  As a result, the mover 1 leaves the first stator 5, approaches the second stator 6, and is combined with the magnetic attraction force generated between the second stator 6 and the second stator 6. The magnetic flux is attracted to the second stator 6 and latched on the second stator 6 side (see FIG. 2). In this case, the force for moving the mover 1 from the first stator 5 side to the second stator 6 side is greater than twice the magnetic repulsion force by the magnetic attraction force.

  The power of the mover 1 is transmitted to the valve body 12 by the shaft 2-1, and moves the valve body 12 to the other side (the valve opening side) in the movable axis direction. That is, the valve body 12 is moved to the open position. Then, the valve element 12 is held in the open position by the latch of the movable element 1 by the second stator 6 (the valve open state is maintained).

  2 is a state in which the energization to the electromagnetic coil 16 is interrupted after the mover 1 is rotated by the mover rotating means 15, that is, after the energization to the electromagnetic coil 16 is performed (non-excitation state). Is shown. In this case as well, the movable element 1 is stationary with the magnetic pole direction inclined by θ along the magnetic pole direction of the stator 6 by the magnetic attractive force between the movable element 1 and the stator 6.

  Next, from this state (the state shown in FIG. 2), it is assumed that the mover 1 is rotated (rotated 180 °) by the mover rotating means 15 and the magnetic pole arrangement of the mover 1 is switched to the first arrangement. That is, it is assumed that the position of the magnetic pole of the mover 1 (cylindrical permanent magnet) is changed and the upper side is returned to the S pole and the lower side is returned to the N pole. Then, the magnetic attractive force between the mover 1 and the second stator 6 disappears, and a magnetic repulsive force is generated between the mover 1 and the second stator 6.

  As a result, the mover 1 leaves the second stator 6, approaches the first stator 5, and is combined with the magnetic attraction force generated between the first stator 5 and the first stator 5. Toward the side, magnetically attracted by the first stator 5 and latched on the first stator 5 side (see FIG. 1). In this case, the force that moves the mover 1 from the second stator 6 side to the first stator 5 side is greater than twice the magnetic repulsion force by the magnetic attraction force.

  The power of the mover 1 is transmitted to the valve body 12 by the shaft 2-1, and moves the valve body 12 to one side (valve closing side) in the movable axis direction. That is, the valve body 12 is moved to the closed position. Then, the valve element 12 is held in the closed position by the latch of the movable element 1 by the first stator 5 (the valve closed state is maintained).

  Thus, by rotating the mover 1 by the mover rotating means 15, the mover 1 moves in a non-contact manner with the first stator 5 and the second stator 6, and one side of the mover 1. Is latched (maintaining the valve closed state), and the other side is latched (maintaining the valve open state).

  In this case, when the electromagnetic coil 16 is in a non-excited state, the mover 1 is stationary with its magnetic pole direction tilted by approximately θ, so that it receives the electromagnetic force from the mover rotating means 15 and rotates efficiently. .

  In other words, in a non-excited state of the electromagnetic coil 16, a movable line that is generally opposed to the other end of the yoke 17-1 and a line connecting the center of the other end of the yoke 17-1 and the movable axis Z so as to be orthogonal to each other. A crossing angle between the center of the magnetic pole on the outer peripheral surface of the child 1 and the line connecting the movable axis Z is θ, and a line connecting the center of the other end of the yoke 17-2 and the movable axis Z so as to be orthogonal to each other. Since the crossing angle of the line connecting the center of the magnetic pole of the outer peripheral surface of the mover 1 substantially opposite to the other end of the yoke 17-2 and the movable axis Z is defined as θ, the electromagnetic coil 16 is The electromagnetic force generated when the magnetized state is activated acts efficiently on the rotation of the mover 1. When the above-mentioned intersection angle θ is not applied, that is, when θ = 0, the clockwise and counterclockwise (clockwise and counterclockwise) rotational forces are balanced even when receiving electromagnetic force. Therefore, it is difficult to rotate.

  Thereby, it becomes easy to rotate the needle | mover 1, it can rotate with low electric power, and the power saving of the needle | mover rotation means 15 is attained. In this case, the crossing angle θ is preferably in a range larger than 0 ° and smaller than 90 °.

[When impact in the other direction or temporary excessive force is applied in the latched state]
Now, when the arrangement of the magnetic poles of the mover 1 is in the first arrangement and the mover 1 is magnetically attracted to the first stator 5 (see FIG. 1), the direction toward the second stator 6 It is assumed that the movable element 1 has moved in the direction of the second stator 6 due to an impact on the surface or a temporary excessive force.

  In this case, the mover 1 moves in the direction of the second stator 6 in a state where the arrangement of the magnetic poles is in the first arrangement. When the mover 1 approaches the second stator 6, a magnetic repulsive force is generated between the mover 1 and the second stator 6. At this time, a magnetic attractive force is acting between the mover 1 and the other ends of the yokes 17-1 and 17-2 and between the mover 1 and the first stator 5, The rotation of the mover 1 is restricted (blocked), and the magnetic repulsion force with the second stator 6 appears as an operation only in the movable axis direction. As a result, the mover 1 moves away from the second stator 6, approaches the first stator 5, and the mover 1 is moved by the resultant force of the magnetic attraction force generated between the mover 1 and the first stator 5. It is returned to one side (valve closing side) in the axial direction.

  That is, even when an impact or temporary excessive force is applied to the other side (the valve opening side) in the movable axis direction and the movable element 1 moves to the other side in the movable axis direction, the movable element 1 remains in the other direction in the movable axis direction. Instead of being latched at the position moved to the side, it automatically returns to the latch (original latched state) at the position moved to one side (valve closing side) in the movable axis direction.

  Now, when the arrangement of the magnetic poles of the mover 1 is the second arrangement and the mover 1 is magnetically attracted to the second stator 6 (see FIG. 2), the direction toward the first stator 5 It is assumed that the mover 1 has moved in the direction of the first stator 5 due to an impact on the head or a temporary excessive force.

  In this case, the mover 1 moves in the direction of the first stator 5 in a state where the arrangement of the magnetic poles is in the second arrangement. When the mover 1 approaches the first stator 5, a magnetic repulsive force is generated between the mover 1 and the first stator 5. At this time, a magnetic attractive force is acting between the mover 1 and the other ends of the yokes 17-1 and 17-2 and between the mover 1 and the second stator 6. The rotation of the mover 1 is restricted (blocked), and the magnetic repulsion force with the first stator 5 appears as an operation only in the movable axis direction. As a result, the mover 1 moves away from the first stator 5, approaches the second stator 6, and the mover 1 is moved by the resultant force with the magnetic attractive force generated between the second stator 6. It is returned to the other side (the valve opening side) in the axial direction.

  That is, even if an impact or temporary excessive force is applied to one side (valve closing side) in the movable axis direction, and the movable element 1 moves to one side in the movable axis direction, the movable element 1 remains in one of the movable axis directions. Instead of being latched at the position moved to the side, it automatically returns to the latch (original latched state) at the position moved to the other side (the valve opening side) in the movable axis direction.

  As described above, in the shut-off valve of the present embodiment, unless the arrangement of the magnetic poles of the mover 1 is changed by rotating the mover 1, the position moved from one side of the mover 1 to the position moved to the other side. The latch cannot be switched from the position moved to the other side to the position moved to the one side. Further, without changing the arrangement of the magnetic poles of the mover 1, the mover 1 latched at the position moved to one side is moved to the other side, and the mover 1 latched at the position moved to the other side. When movement to one side occurs, the original latch state is automatically restored.

  In the shut-off valve of the present embodiment, a lock mechanism called rotation of the mover 1 is added to the movement of the mover 1 in the movable axis direction, that is, to change the open / close state of the shut-off valve, and this lock mechanism is added. As a result, the valve open / closed state can be reliably maintained, and safety is improved.

  In the shut-off valve of the present embodiment, permanent magnets are used for both the mover 1 and the stators 5 and 6, and the main power for moving the mover 1 in the direction of the movable axis is the stator (permanent magnet). ) Use both the magnetic repulsive force of the mover 1 (permanent magnet) and the magnetic attracting force of the mover side stators (permanent magnets) 5 and 6 working between 5 and 6 simultaneously. The rotational force for rotating the mover 1 is used as pilot power only to change the arrangement of the magnetic poles of the mover 1.

  Thereby, in the shut-off valve of the present embodiment, a magnetic field is instantaneously applied from a position close to the mover (permanent magnet) 1 so as to generate a rotational torque necessary for changing the arrangement of the magnetic poles of the mover 1. It is only necessary to use a conventional solenoid (Patent Document 1) or a stepping motor (Patent Document 2) to operate with less power (in principle) than when used as the main power for movement in the direction of the movable axis. Is possible. In particular, with respect to Patent Document 2, since the voltage (pulse) application time is significantly shortened, power saving can be realized. Therefore, it is suitable for a battery-driven shut-off valve.

  Further, in the shut-off valve of the present embodiment, the electrical (and operation sequence) specifications for opening and closing may be almost the same, so the configuration of the control circuit can be simplified. That is, the technique of Patent Document 1 requires a booster circuit having a large capacitor only when the valve is opened, and the technique of Patent Document 2 requires a step motor driver circuit, which complicates the configuration of the control circuit. . On the other hand, the shut-off valve of the present embodiment is basically possible only with a transistor switching circuit, and the configuration of the control circuit can be simplified.

[About movable body]
In the present embodiment, the movable body 4 moves in the compartment 11. For this reason, the movement of the mover 1 and the shafts 2-1 and 2-2 may change the pressure in the compartment 11 to hinder the operation of the mover 1. In order to prevent this, although not shown in the present embodiment, slits and chamfering are performed on the sliding bodies 3-1 and 3-2 and the shafts 2-1 and 2-2. , Allowing gas flow.

  In the configuration shown in FIG. 1, for the purpose of downsizing, the sliding bodies 3-1 and 3-2 are provided on the shafts 2-1 and 2-2, and the outer surfaces of the sliding bodies 3-1 and 3-2 are arranged. The movement of the movable body 4 is guided with the inner surface of the compartment 11, but a bush (linear guide) is installed (fixed) in the compartment 11 and the outer peripheral surfaces of the shafts 2-1 and 2-2. It is good also as a general structure which guides the movable body 4 with the inner peripheral surface of a bush (linear guide).

[About the mover]
In the configuration shown in FIG. 1, the permanent magnet of the mover 1 has a columnar shape, but may have a cylindrical shape. Since the permanent magnet of the mover 1 is formed in a columnar shape or a cylindrical shape, the distance from the inner peripheral surfaces of the stators 5 and 6 arranged on the outside can be set close to the magnetic efficiency. Is convenient for miniaturization. Further, in the case of a cylindrical shape, the magnetic force becomes weaker depending on the volume and the distance between the magnetic poles, but since it can be fixed through the shaft on the inside, the shaft alignment and connection with the shaft are facilitated and the assembly is facilitated. Further, in the case of a cylindrical shape, the shaft also has a tubular shape so that the gas in the compartment 11 can flow, and the pressure change in the compartment 11 due to the movement of the movable body 4 as described above can be suppressed. . The permanent magnet of the mover 1 may be rectangular, but it can be said that a cylindrical or cylindrical shape is the shape with the best magnetic and space efficiency.

  In the configuration shown in FIG. 1, the length 1 of the permanent magnet of the mover 1 in the direction of the movable axis is set to the permanent magnets 7-1 and 7-2 and the second stator 6 constituting the first stator 5. Is equal to or less than the facing surface distance L of the permanent magnets 8-1 and 8-2. By setting l ≦ L, the force generation efficiency in the movable axis direction can be improved.

  Moreover, in the structure shown in FIG. 1, although the needle | mover 1 is comprised with one permanent magnet, it does not necessarily need to be comprised with one permanent magnet. By configuring the mover 1 with one permanent magnet, the configuration becomes simple and the assembly can be facilitated.

  FIG. 3 shows an example in which the mover 1 is composed of a plurality of permanent magnets. In the example shown in FIG. 3, the mover 1 is composed of three columnar permanent magnets 1-1, 1-2, and 1-3, and the permanent magnet 1-1 is located at the center of the movable axis. The permanent magnets 1-2 and 1-3 that are shorter than the permanent magnet 1-1 (length in the movable axis direction) are arranged on both sides of the permanent magnet 1-1. .

  In the mover 1 (1B), the permanent magnet 1-1 and the permanent magnets 1-2 and 1-3 have different diameters (lengths in the opposite magnetic pole directions), and the permanent magnet 1-1 has a permanent magnet diameter. It is made larger than the diameter of 1-2 and 1-3. Then, the permanent magnet 1-1 and the permanent magnet 1-2 are coupled with the nonmagnetic coupling portion 1a interposed therebetween, and the permanent magnet 1-1 and the permanent magnet 1-3 are coupled with the nonmagnetic coupling portion 1b interposed therebetween. doing.

  In the mover 1 (1B), the central permanent magnet 1-1 is a permanent magnet for rotating the mover, and the permanent magnets 1-2 and 1-3 on both sides are linearly moved in the movable axis direction of the mover. Permanent magnet for holding. In this case, since the diameter of the permanent magnet 1-1 is larger than the diameter of the permanent magnets 1-2 and 1-3, the mover 1 can be rotated (magnetic pole reversal) with a small force.

  That is, since the permanent magnet 1-1 is advantageous in terms of torque with respect to the force that prevents the rotation caused by the attractive force acting between the permanent magnets 1-2 and 1-3 and the stators 5 and 6, the weaker force That is, it can be rotated with low power, and the power saving means 15 can be saved.

  For example, in the configuration shown in FIG. 1, when it is necessary to increase the power and holding force of the movable element 1 (1 </ b> A) in the movable axis direction, a large force is also required to rotate the movable element 1. For this reason, it is possible to save energy as the movable element 1 (1B) configured as shown in FIG.

  Further, by adopting the movable element 1 (1B) having the configuration as shown in FIG. 3, individual permanent magnets are selected for rotation, movement (linear movement), and holding, and the degree of design freedom is increased. Not only can it be widened, but it is possible to reduce the volume of the permanent magnet material and reduce the cost and weight when the length and diameter of the permanent magnet are large.

[Control of movable range of mover]
FIG. 4 shows an example in which the movable range of the mover 1 is limited. In this example, the movement of the movable element 1 toward one side (the valve closing side) in the movable axis direction is regulated by using the valve seat 18 on which the valve body 12 is seated as a mechanical stopper, and the movable element 1 is moved in the movable axis direction. The movement to the other side (valve opening side) is regulated by using a spacer 19 provided on the end face (closed face) of the seal tube 10 as a mechanical stopper, thereby restricting the movable range of the mover 1. .

[About the stator]
In the configuration shown in FIG. 1, a set of permanent magnets 7-1 and 7-2 is fixed to the inner peripheral surface of a cylindrical yoke 7-3 to form a first stator 5, and a set of permanent magnets 8 is used. -1 and 8-2 are fixed to the inner peripheral surface of the cylindrical yoke 8-3 to form the second stator 6. However, the first stator 5 and the second stator 6 are made cylindrically permanent. It is good also as a magnet.

  FIG. 5 shows an example in which the stators 5 and 6 are cylindrical permanent magnets. In the configuration shown in FIG. 5, the first stator 5 is arranged in a cylindrical shape that is arranged with the movable shaft Z and the center approximately aligned, and is radially magnetized with an inner diameter that does not contact the movable element 1. Permanent magnet. In this example, as shown in FIG. 5, the upper surface of the inner diameter facing the movable shaft Z side of the stator 5 is an N pole, and the lower surface is an S pole.

  In addition, the second stator 6 is also a cylindrical permanent magnet that is arranged so that the center thereof is aligned with the movable axis Z and is radially magnetized with an inner diameter that does not contact the movable element 1. . In this example, as shown in FIG. 5, the upper surface of the inner diameter facing the movable shaft Z side of the stator 6 is the S pole and the lower surface is the N pole.

  That is, in the configuration shown in FIG. 5, the shape of the permanent magnet is different, but the cylindrical permanent magnet of the first stator 5 and the cylindrical permanent magnet of the second stator 6 are the same as in the configuration of FIG. Is a direction perpendicular to the movable axis Z of the magnetic pole direction, and one side of the movable axis direction across the mover 1 so that the magnetic poles opposed to the movable axis direction of the respective permanent magnets have different polarities. Arranged on the other side. By using such a cylindrical permanent magnet, the magnetic efficiency between the mover 1 (1A) and the stators 5 and 6 is improved, and the configuration is simplified.

  Further, in the configuration shown in FIG. 1, as shown in FIG. 6, a pair of permanent magnets 7-1, 7-2 and 8-1, 8-2 is made of a permanent magnet having a circular pole surface (segment type). Permanent magnet). Also by using such a segment type permanent magnet, the magnetic efficiency between the movable element 1 and the stators 5 and 6 is improved.

  Further, as shown in FIG. 7, the surfaces of the pair of permanent magnets 7-1 and 7-2 in the direction opposite to the movable axis Z are connected by a yoke 7-4 having a “U” -shaped cross section to be fixed first. The second stator 6 is formed by connecting the surfaces of the pair of permanent magnets 8-1 and 8-2 in the direction opposite to the movable axis Z with a yoke 8-4 having a “U” cross section. It may be. Thus, the configuration of FIG. 1 and the like is compared with the case where only one set of permanent magnets 7-1 and 7-2 is the stator 5 and only one set of permanent magnets 8-1 and 8-2 is the stator 6. As with, leakage flux is reduced and magnetic efficiency is improved.

  A modification of the magnetic pole direction of the permanent magnet of the stator is shown in FIG. A pair of segment-type permanent magnets 7-1 and 7-2, whose arc-shaped concave surfaces are opposed to each other, are separated so as not to contact the mover 1 in a direction perpendicular to the movable axis Z across the movable axis Z. The magnetic pole direction is parallel to the movable axis Z, each magnetic pole direction is opposite to the other, and one set of the permanent magnets 7-1 and 7-2 on one side of the movable axis direction. A ring-shaped yoke 7-5, half ring-shaped yokes 7-6a and 7-6b are provided on the other side to form the first stator 5, and a set of segment types in which the arc-shaped concave surfaces are opposed to each other. Permanent magnets 8-1 and 8-2 are arranged so as not to contact the mover 1 in a direction perpendicular to the movable axis Z across the movable axis Z, and the magnetic pole direction is parallel to the movable axis Z. Each magnetic pole direction is opposite to the other, and this set of permanent magnets 8-1 and 8-2 can be used. A ring-shaped yoke 8-5 is provided on the other side in the axial direction, and semi-ring-shaped yokes 8-6a and 8-6b are provided on one side to form the second stator 6, and one set of the first stator 5 is provided. The permanent magnets 7-1 and 7-2 and the pair of permanent magnets 8-1 and 8-2 of the second stator 6 are arranged so that the magnetic poles facing each other in the direction of the movable axis of the respective permanent magnets have different polarities. In addition, they are arranged on one side and the other side in the movable axis direction with the mover 1 interposed therebetween. In this configuration, one of the yokes 7-5 and 7-6a and 7-6b in the first stator 5 and the yokes 8-5 and 8-6a and 8-6b in the second stator 6 are either one. May be provided. Further, instead of the segment-type permanent magnet, a square-type permanent magnet can be similarly configured.

[Mover rotating means]
In the configuration shown in FIG. 1, the shape of the other end of the yokes 17-1 and 17-2 is an arc shape in accordance with the shape of the outer peripheral surface of the mover 1, but as shown in FIG. The shape of the other end of -1 and 17-2 may be a flat surface. In addition, when the shape of the other end of the yokes 17-1 and 17-2 is an arc, the generation efficiency of the rotational force is improved (it can be rotated with low magnetic flux (low power)). Further, it is preferable that both end portions of the arcs of the opposing yokes 17-1 and 17-2 have a small cross-sectional area (high magnetic resistance) and face each other close to each other in order to increase the rotational force. Further, it is preferable that the arc shape is formed concentrically with the outer periphery of the mover 1 in order to improve the rotation efficiency.

  Further, in the configuration shown in FIG. 1, a space is provided in the abutting portion of the other end of the yokes 17-1 and 17-2. However, as shown in FIG. Alternatively, they may be integrated. When the butted portions of the other ends of the yokes 17-1 and 17-2 are connected or integrated, that is, when the other ends of the yokes 17-1 and 17-2 are partially connected or integrated, Although the generation efficiency is slightly reduced, alignment and assembly are facilitated.

  In the configuration shown in FIG. 1, the setting of the crossing angle θ in the non-excited state of the electromagnetic coil 16 is performed by setting the rotation angle (the direction of the magnetic pole) around the movable axis Z of the stators 5 and 6. However, the yokes 17-1 and 17-2 may be asymmetrically shaped or arranged. An example is shown in FIGS.

  In the example shown in FIG. 11, the shape of the other end of the yokes 17-1 and 17-2 is asymmetric, so that the mover 1 and the yokes 17-1 and 17-are in an unexcited state of the electromagnetic coil 16. The crossing angle θ is generated by setting a stable position where the rotation angle of the mover 1 is balanced by the attractive force acting between the other end of the two.

  In the example shown in FIG. 12, by providing notches 17a and 17b at the other ends of the yokes 17-1 and 17-2, the mover 1 and the yokes 17-1 and 17 are in a non-excited state of the electromagnetic coil 16. The crossing angle θ is generated by setting a stable position where the rotation angle of the mover 1 is balanced by the attractive force acting between the other end portion of −2.

  As described above, when the crossing angle θ is set with the asymmetric shapes or arrangements of the yokes 17-1 and 17-2, the holding torque for holding the mover 1 at a predetermined angular position works. It is possible to prevent rotation due to factors other than excitation and prevent malfunction.

  In the examples shown in FIGS. 11 and 12, the directions of the magnetic poles of the stators 5 and 6 are not shown, but in order to maximize the generated force in the movable axis Z direction of the mover 1, the stator 5 , 6 are preferably set so that the directions of the magnetic poles of the movable element 1 and the magnetic poles of the mover 1 are also matched.

  As shown in FIG. 13, in the configuration shown in FIG. 9, the centers of the end portions of the yokes 17-1 and 17-2 that are opposed to each other with the movable element 1 sandwiched from the direction substantially orthogonal to the movable axis Z are connected. The line and the movable axis Z may not be crossed.

  Further, as shown in FIG. 14, in the configuration shown in FIG. 9, the centers of the ends of the yokes 17-1 and 17-2 facing each other with the movable element 1 sandwiched from the direction substantially orthogonal to the movable axis Z are You may make it shift to the both sides of the needle | mover 1 within the surface orthogonal to the movable axis Z. FIG.

  If the configuration as shown in FIG. 13 or FIG. 14 is used, it becomes easier to rotate by excitation of the electromagnetic coil 16 than the configuration shown in FIG. Power saving is possible.

  Further, in the configuration shown in FIG. 1, the mover rotating means 15 (15A) is composed of the electromagnetic coil 16 and the yokes 17-1 and 17-2, and the other ends of the yokes 17-1 and 17-2 are connected. Although it is made to oppose on both sides of the needle | mover 1 from the direction substantially orthogonal to the movable axis Z, it does not necessarily need to be such a structure.

  For example, as shown in FIG. 15 as an example applied to the configuration shown in FIG. 7, the axes of the movable shaft Z are made to substantially coincide and the ends of the cores 17-3 and 17-4 are made to face each other. The pair of electromagnetic coils 16-1 and 16-2 arranged in this manner, and the yoke 17-5 that connects the other ends of the cores 17-3 and 17-4 of this set of electromagnetic coils, and the mover rotating means 15 (15B) may be configured.

[Rotational force transmission suppression means]
In the configuration shown in FIG. 1, the shaft 2-1 of the movable body 4 is passed through the through hole 12 a provided on the back surface side of the valve body 12, and a spherical surface (curved surface) and a retaining ring 13 are provided at the tip of the shaft 2-1. Is mounted on the through hole 12a of the valve body 12 as a rotating sliding portion of the movable body 4, so that the force in the movable axis Z direction via the shaft 2-1 of the movable element 1 is transmitted and the movable element is transmitted. Transmission of the rotational force about the movable axis Z to the valve body 12 via the one shaft 2-1 is suppressed. That is, when the shaft 2-1 rotates about the movable axis Z and moves in one direction of the movable axis Z, the spherical surface (curved surface) at the tip of the shaft 2-1 is centered on the movable axis Z of the shaft 2-1. This rotation is received by the sliding between the spherical surface (curved surface) at the tip of the shaft 2-1 and the inner surface of the through hole 12a of the valve body 12, and the force in one direction of the movable shaft Z is transmitted to cause the valve body 12 to move to the movable shaft Z. Move in one direction (valve closing side). Conversely, when the shaft 2-1 rotates about the movable axis Z and moves in the other direction of the movable axis Z, the retaining ring 13 at the tip of the shaft 2-1 is centered on the movable axis Z of the shaft 2-1. Rotation is received by sliding between the retaining ring 13 at the tip of the shaft 2-1 and the inner surface of the through hole 12a of the valve body 12, and the force in the other direction of the movable shaft Z is transmitted to cause the valve body 12 to move in the other direction of the movable shaft Z. Move to (open side).

  Further, instead of the rotary sliding portion having the configuration shown in FIG. 1 as described above, as shown in FIG. 16, a bearing 20 is attached to the tip of the shaft 2-1, thereby constituting a rotational force transmission suppressing means, While transmitting the force in the direction of the movable axis Z via the shaft 2-1 of the mover 1 to the body 12, the transmission of the rotational force centered on the movable axis Z via the shaft 2-1 of the mover 1 is received. You may do it. Since the bearing 20 has less friction, the mover 1 can be rotated with low power, and power saving of the mover rotating means 15 can be achieved, which is preferable.

[Valve rotation stop mechanism]
In the configuration shown in FIGS. 1 and 16, the pin 14 provided on the flange 9 is inserted into the hole 12b provided on the back surface side of the valve body 12, thereby guiding the movement of the valve body 12 in the movable axis direction. The rotation of the valve body 12 around the movable axis Z is restricted (blocked). As a result, the valve body 12 is prevented from being erroneously rotated by some external force and giving the rotational force to the movable body 4.

  As shown in FIG. 17, a pin 21 is provided on the back surface side of the valve body 12, and the pin 21 is inserted into a hole 9 b provided in the flange 9 to guide the movement of the valve body 12 in the movable axis direction. At the same time, the rotation of the valve body 12 around the movable axis Z may be restricted (blocked).

  Further, as shown in FIG. 18, the plurality of convex portions 12 c provided on the back surface side of the valve body 12 and the plurality of convex portions 9 c provided on the flange 9 are engaged with each other, thereby moving the valve body 12 in the movable axis direction. The rotation of the valve body 12 around the movable axis Z may be regulated (blocked).

[About the permanent magnet of the mover]
In the structure shown in FIG. 1, the permanent magnet constituting the mover 1 has two magnetic poles. However, four or more magnetic poles (for example, cylindrical radial magnetization (in the case of a cylinder, there is a magnetic pole on the inner peripheral side). It may be a multi-pole permanent magnet of magnetic poles)).

  FIG. 19 shows a configuration diagram of a main part when the permanent magnet of the mover 1 is a cylindrical permanent magnet and the cylindrical permanent magnet has four magnetic poles. 19A is a side sectional view of the main part, FIG. 19B is a view of FIG. 19A viewed from the left direction, and FIG. 19C is a view of FIG. 19A viewed from the right direction. It is a figure. In FIG. 19, the mover rotating means 15, the seal tube 10 and the like shown in FIG. 1 are omitted.

  In this example, the permanent magnet of the mover 1 is divided into four in the circumferential direction, and magnetic poles are formed on adjacent circumferential surfaces at intervals of 90 °. In this example, the S pole is on the first circumferential surface (the upper surface in FIG. 19B) that is adjacent at 90 ° intervals, and the second surface (the left surface in FIG. 19B). The N pole is formed, the S pole is formed on the third surface (the lower surface in FIG. 19B), and the N pole is formed on the fourth surface (the right surface in FIG. 19B). .

  As a result, the stators 5 and 6 are also formed as cylindrical permanent magnets having a total of 8 magnetic poles with 4 magnetic poles on the inner peripheral surface and 4 magnetic poles on the outer peripheral surface. That is, the inner peripheral surface of the stator 5 is divided into four in the circumferential direction, and magnetic poles are formed on adjacent circumferential surfaces at 90 ° intervals. In this example, the N pole is formed on the first circumferential surface (the upper surface in FIG. 19B) adjacent to each other at 90 ° intervals, and the second surface (the left surface in FIG. 19B). The S pole is formed, the N pole is formed on the third surface (the lower surface in FIG. 19B), and the S pole is formed on the fourth surface (the right surface in FIG. 19B). . Further, the inner peripheral surface of the stator 6 is divided into four in the circumferential direction, and magnetic poles are formed on adjacent circumferential surfaces at intervals of 90 °. In this example, the S pole is on the first circumferential surface (the upper surface in FIG. 19C) that is adjacent at 90 ° intervals, and the second surface (the left surface in FIG. 19C). The N pole is formed, the S pole is formed on the third surface (the lower surface in FIG. 19C), and the N pole is formed on the fourth surface (the right surface in FIG. 19C). .

  In the structure shown in FIG. 19, when the mover rotating means 15 is provided, the other ends of the yokes 17-1 and 17-2 are substantially orthogonal to the movable axis Z as shown in FIG. From the direction to move, it arrange | positions so that it may oppose to a pair of adjacent magnetic pole on the outer peripheral surface of the permanent magnet of the needle | mover 1 substantially.

  Also in the case of such an arrangement of the yokes 17-1 and 17-2, a line connecting the center of the other end of the yoke 17-1 and the movable axis Z so as to be orthogonal to each other when the electromagnetic coil 16 is not excited. The angle of intersection between the center of the magnetic pole on the outer peripheral surface of the permanent magnet of the mover 1 and the other end of the yoke 17-1 and the line connecting the movable axis Z so as to be orthogonal is θ, A line connecting the center of the other end of the yoke 17-2 and the movable axis Z so as to be orthogonal to each other, and a magnetic pole on the outer peripheral surface of the permanent magnet of the mover 1 substantially facing the other end of the yoke 17-2. It is desirable that the crossing angle of the line connecting the center and the movable axis Z to be orthogonal is set as θ.

[Modification of mover / stator]
Further, a chamfered portion may be formed on both or one of the adjacent edges of the movable element 1 and the stators 5 and 6. FIG. 21 shows an example in which chamfered portions are formed on both the adjacent edges of the movable element 1 and the stators 5 and 6 in the configuration shown in FIG. FIG. 21 is a side sectional view of the main part.

  In the example shown in FIG. 21, chamfered portions 5 a and 6 a are formed at the edges of the stator 5 (cylindrical permanent magnet) and the stator 6 (cylindrical permanent magnet) that are close to and opposed to the mover 1. . Further, chamfered portions 1c and 1d are formed at edges that are close to and opposed to the stator 5 (cylindrical permanent magnet) and the stator 6 (cylindrical permanent magnet) of the mover 1.

  When the mover 1 and the edges of the stators 5 and 6 are close to each other, the magnetic attractive force suddenly increases, the characteristics of the force generated in the mover 1 change suddenly, and the direction orthogonal to the movable axis Z that prevents rotation The power of will also increase. By forming chamfers on both or one of the adjacent edges of the mover 1 and the stators 5 and 6, the characteristic change becomes smooth, so that variation between solids is reduced, and the direction orthogonal to the movable axis Z The power of the movable element rotating means 15 can be reduced because the torque of the moving member rotating means 15 is reduced. Further, since the force component in the direction parallel to the movable axis Z is increased, the generated force of the movable element 1 in the direction of the movable axis Z is improved.

[Embodiment 2]
FIG. 22 is a diagram showing a configuration of a main part of another embodiment (embodiment 2) of the shut-off valve according to the present invention (FIG. 22 (a) is a side sectional view, FIG. 22 (b) is FIG. 22 (a). ) Is a cross-sectional view taken along line AA in FIG. 22, and FIG. 22C is a cross-sectional view taken along line BB in FIG.

  In the second embodiment, the mover 1 is composed of a permanent magnet 1-A for rotation and a permanent magnet 1-B for linear motion / holding, and the permanent magnet 1-A for rotation and linear motion. The permanent magnet 1-B for holding is a non-rotating permanent magnet 1-A on one side in the movable axis direction, and a permanent magnet 1-B for linear motion / holding on the other side in the movable axis direction. The magnetic coupling part 1e is sandwiched between them.

  Further, in this mover 1, the distance between the magnetic poles facing each other across the movable axis Z of the permanent magnet 1-A for rotation is relative to the distance between the movable shaft Z of the permanent magnet 1-B for linear motion / holding. The mover rotating means 15 is provided for the permanent magnet 1-A for rotation, and the first fixed for the permanent magnet 1-B for linear motion / holding. A child 5 and a second stator 6 are provided. In this example, the stators 5 and 6 are cylindrical permanent magnets. Other configurations are the same as those of the first embodiment, and thus are omitted.

  The state of FIG. 22 shows a state in which the mover 1 is rotated by the mover rotating means 15 and the arrangement of the magnetic poles of the permanent magnet 1-B of the mover 1 is switched to the first arrangement. In this first arrangement, as shown in FIG. 22, the magnetic poles of the permanent magnet 1-B of the mover 1 have an S pole on the upper side and an N pole on the lower side.

  In this state, the permanent magnet 1 -B of the mover 1 is magnetically attracted to the stator 5 from the outside of the compartment 11. That is, the permanent magnet 1-B of the mover 1 is pulled and latched (attracted / held). As a result, the valve body 12 stops (maintains the closed state) in a state where it has moved to one side of the movable axis direction (left direction shown in FIG. 22A), that is, in a state where it has moved to the valve closing side. .

  From this state, it is assumed that the mover 1 is rotated (turned 180 °) by the mover rotating means 15 and the arrangement of the magnetic poles of the permanent magnet 1-B of the mover 1 is switched to the second arrangement. That is, the magnetic force of the mover rotating means 15 is applied to the permanent magnet 1-A, and the permanent magnet 1-A is rotated (rotated 180 °), thereby switching the arrangement of the magnetic poles of the permanent magnet 1-B. Is the S pole and the upper side is the N pole.

  Then, the magnetic attractive force between the permanent magnet 1-B of the mover 1 and the first stator 5 disappears, and the magnetic force between the permanent magnet 1-B of the mover 1 and the first stator 5 is lost. A repulsive force is generated. As a result, the permanent magnet 1 -B of the mover 1 leaves the first stator 5, approaches the second stator 6, and is combined with the magnetic attraction force generated between the second stator 6 and the second stator 6. Heading toward the second stator 6 side, magnetically attracted to the second stator 6 and latched on the second stator 6 side.

  The power of the mover 1 is transmitted to the valve body 12 by the shaft 2-1, and moves the valve body 12 to the other side (the valve opening side) in the movable axis direction. Then, the valve body 12 is held in the open position by the latch of the permanent magnet 1-B of the mover 1 by the second stator 6 (the valve open state is maintained).

  From this state, it is assumed that the mover 1 is rotated (turned 180 °) by the mover rotating means 15 and the arrangement of the magnetic poles of the permanent magnet 1-B of the mover 1 is switched to the first arrangement. That is, the magnetic force of the mover rotating means 15 is applied to the permanent magnet 1-A, and the permanent magnet 1-A is rotated (rotated 180 °), thereby switching the arrangement of the magnetic poles of the permanent magnet 1-B. Is returned to the N pole and the upper side to the S pole.

  Then, the magnetic attractive force between the permanent magnet 1-B of the mover 1 and the second stator 6 disappears, and the magnetism between the permanent magnet 1-B of the mover 1 and the second stator 6 is lost. A repulsive force is generated. As a result, the permanent magnet 1 -B of the mover 1 leaves the second stator 6, approaches the first stator 5, and is combined with the magnetic attraction force generated between the first stator 5 and the first stator 5. It goes to the first stator 6 side, is magnetically attracted to the first stator 5, and is latched on the first stator 5 side.

  The power of the mover 1 is transmitted to the valve body 12 by the shaft 2-1, and moves the valve body 12 to one side (valve closing side) in the movable axis direction. Then, the valve body 12 is held in the closed position by the latch of the permanent magnet 1-1 of the mover 1 by the first stator 5 (the valve closed state is maintained).

  In the second embodiment, the distance between the magnetic poles facing each other across the movable axis Z of the permanent magnet 1-A is made larger than the distance between the magnetic poles facing each other across the movable axis Z of the permanent magnet 1-B. Therefore, since the permanent magnet 1-A is advantageous in terms of torque against the force that prevents rotation caused by the attractive force acting between the permanent magnet 1-B and the stators 5, 6, a weaker force, that is, a lower force It can be rotated by electric power, and the power saving means 15 can be saved.

  In the second embodiment, the stators 5 and 6 are cylindrical permanent magnets, but the permanent magnets are fixed to the inner peripheral surface of the cylindrical yoke as in the configuration shown in FIG. It is good. In this case, the cylindrical yokes of the stators 5 and 6 may be connected or integrated in the direction of the movable axis. Needless to say, in the second embodiment, as in the first embodiment, various modifications are conceivable.

  In the first and second embodiments described above, the movable body 4 (mover 1), the stators 5 and 6, and the mover rotating means 15 constitute the bistable moving means. Are latched at the position where the mover 1 has moved to one side in the movable axis direction (first position) and at the position where it has moved to the other side in the movable axis direction (second position). In general, the structure is symmetrical in the direction of the movable axis, but depending on the application and specifications, the balance of the size, shape, arrangement, etc. of the permanent magnets related to the first and second positions May be changed to change the characteristics of the shut-off / return (valve closing / opening) operation. For example, in a shut-off valve, gas pressure (back pressure) is applied in the valve closing direction in the closed state, so a greater force is required when opening the valve than when the valve is closed. It is more efficient to make asymmetrical. It is also possible to set by means of a means for limiting the movable range of the mover 1 as shown in FIG.

  In the second embodiment, instead of the bistable moving means shown in the first embodiment, it is arranged in the compartment 11, is movable in the direction of the movable axis, and is held rotatably about the movable axis. A plurality of magnetic poles are arranged so as to sandwich the movable axis Z in a direction orthogonal to the movable axis Z, and the first permanent magnet 1-B and the second are separated from each other by a nonmagnetic member and separated from each other in the movable axis direction. The distance between the opposing magnetic poles across the movable axis Z of the first permanent magnet 1-B is such that the distance between the opposing magnetic poles across the movable axis Z of the first permanent magnet 1-B is A magnetic field is applied to the mover 1 (1C) and the second permanent magnet 1-A which are made larger than the distance of the first mover 1 (1C) to rotate the first mover 1-B and the second permanent magnet 1-B. Mover rotating means 15 (which replaces the arrangement of the magnetic poles of the permanent magnet 1-A between the first arrangement and the second arrangement) 5A) and the first permanent magnet 1-B across the first permanent magnet 1-B, the first permanent magnet 1-B is located on one side, and the first permanent magnet 1-B has the magnetic pole arrangement in the first arrangement. When the magnet 1-B is magnetically attracted and held, and the arrangement of the magnetic poles of the first permanent magnet 1-B is in the second arrangement, the first permanent magnet 1-B is composed of a member including a permanent magnet that repels magnetically. The first permanent magnet 5 and the first permanent magnet 1-B are located on the other side in the movable axis direction, and the arrangement of the magnetic poles of the first permanent magnet 1-B is in the second arrangement. In this case, when the first permanent magnet 1-B is magnetically attracted and held, and the arrangement of the magnetic poles of the first permanent magnet 1-B is in the first arrangement, the first permanent magnet 1-B is permanently repelled. Bistable moving means including a second stator 6 made of a member including a magnet is used.

  In the first and second embodiments described above, the permanent magnet is made of, for example, a rare earth magnet such as neodymium or samarium cobalt, or a ferrite magnet, or a bonded magnet formed by mixing a resin with these magnetic powders. . The yoke is made of a soft magnetic material (for example, an electromagnetic steel plate, electromagnetic soft iron, permalloy, etc.) having a large saturation magnetic flux density and magnetic permeability, a small coercive force, and a small magnetic hysteresis. The nonmagnetic member such as the shaft is made of, for example, aluminum, SUS316 (L), brass, resin, or the like. The non-magnetic member can be made of a slightly magnetic material (for example, SUS304) instead of the non-magnetic material as described above, and the performance is lowered, but should be selected from the viewpoint of cost. Is also possible. The valve body may be a single valve structure or a sub-valve structure having a pilot valve (relief valve). In the first and second embodiments described above, the valve body 12 is configured not to rotate. However, the valve body 12 is configured to rotate by omitting the rotational force transmission suppressing means and the valve body rotation stop mechanism. You can also In the case of the auxiliary valve structure, the pilot valve (relief valve) may be configured to rotate and open and close, and the main valve may not rotate. Moreover, it is not restricted to the gas emergency shut-off device installed in the supply line of city gas or LP gas, or a gas meter, but can be applied to shut-off valves for other purposes.

[Extension of the embodiment]
The present invention has been described above with reference to the embodiment. However, the present invention is not limited to the above embodiment. Various changes that can be understood by those skilled in the art can be made to the configuration and details of the present invention within the scope of the technical idea of the present invention.

   1 (1A, 1B, 1C): mover, 1-1, 1-2 ... permanent magnet, 2-1, 2-2 ... shaft, 3-1, 3-2 ... sliding body, 4 ... movable body, 5 ... 1st stator, 6 ... 2nd stator, 7-1, 7-2 ... Permanent magnet, 7-3 ... Yoke, 8-1, 8-2 ... Permanent magnet, 8-3 ... Yoke, 9 DESCRIPTION OF SYMBOLS ... Flange, 10 ... Seal pipe, 11 ... Compartment, 12 ... Valve body, 15 (15A, 15B) ... Movable member rotating means, 16 ... Electromagnetic coil, 17-1, 17-2 ... Yoke.

Claims (23)

A valve body movably provided in the direction of the movable axis;
A flange having an opening;
A compartment with one end communicating with the opening of the flange and the other end closed;
A plurality of magnetic poles arranged in the compartment, movable in the direction of the movable axis, held rotatably about the movable axis, and sandwiching the movable axis in a direction perpendicular to the movable axis A mover comprising a permanent magnet; a mover rotating means for rotating the mover to change the arrangement of the magnetic poles of the permanent magnet of the mover between the first arrangement and the second arrangement; When the magnetic poles of the permanent magnets of the mover are located on the one side of the movable axis direction with the child interposed therebetween, and the magnetic poles of the permanent magnets of the mover are magnetically attracted and held, When the arrangement of the magnetic poles is in the second arrangement, the first stator composed of a member including a permanent magnet that magnetically repels the mover, and the other side in the movable axis direction across the mover The arrangement of the magnetic poles of the permanent magnet of the mover is the second arrangement. The movable element is magnetically attracted and held, and when the arrangement of the magnetic poles of the permanent magnet of the movable element is in the first arrangement, the second element is formed of a member including a permanent magnet that magnetically repels the movable element. A bistable moving means comprising a stator;
Power transmitting means for transmitting the power of the mover of the bistable moving means to the valve body through the opening of the flange, and operating the valve body to an open or closed position ;
The first stator and the second stator are:
The magnetic pole direction is a direction perpendicular to the movable axis, the magnetic pole directions are the same direction, and are spaced apart so as not to contact the movable element in a direction perpendicular to the movable axis across the movable axis. A set of permanent magnets,
The set of permanent magnets of the first stator and the set of permanent magnets of the second stator are such that the magnetic poles of the permanent magnets facing each other in the direction of the movable axis are different from each other. A shut-off valve, which is disposed on one side and the other side in the movable axis direction with a mover interposed therebetween . The shut-off valve according to claim 1, wherein
The set of permanent magnets of the first stator and the set of permanent magnets of the second stator have magnetic pole faces facing each other across the movable shaft of each set of permanent magnets in an arc shape. shut-off valve, characterized by that. In the shut-off valve according to claim 1 or 2,
The set of permanent magnets of the first stator and the set of permanent magnets of the second stator are arranged with yokes that connect surfaces of the respective set of permanent magnets in the direction opposite to the movable shaft. shut-off valve, characterized by that. The shut-off valve according to claim 3,
The yoke has a ring shape,
The shut-off valve , wherein the set of permanent magnets is installed on an inner peripheral surface of the yoke . A valve body movably provided in the direction of the movable axis;
A flange having an opening;
A compartment with one end communicating with the opening of the flange and the other end closed;
A plurality of magnetic poles arranged in the compartment, movable in the direction of the movable axis, held rotatably about the movable axis, and sandwiching the movable axis in a direction perpendicular to the movable axis A mover comprising a permanent magnet; a mover rotating means for rotating the mover to change the arrangement of the magnetic poles of the permanent magnet of the mover between the first arrangement and the second arrangement; When the magnetic poles of the permanent magnets of the mover are located on the one side of the movable axis direction with the child interposed therebetween, and the magnetic poles of the permanent magnets of the mover are magnetically attracted and held, When the arrangement of the magnetic poles is in the second arrangement, the first stator composed of a member including a permanent magnet that magnetically repels the mover, and the other side in the movable axis direction across the mover The arrangement of the magnetic poles of the permanent magnet of the mover is the second arrangement. The movable element is magnetically attracted and held, and when the arrangement of the magnetic poles of the permanent magnet of the movable element is in the first arrangement, the second element is formed of a member including a permanent magnet that magnetically repels the movable element. A bistable moving means comprising a stator;
Power transmitting means for transmitting the power of the mover of the bistable moving means to the valve body through the opening of the flange, and operating the valve body to an open or closed position;
The first stator and the second stator are:
A cylindrical permanent magnet that is arranged with the movable shaft and the center approximately aligned, and is radially magnetized with an inner diameter that does not contact the mover;
The cylindrical permanent magnet of the first stator and the cylindrical permanent magnet of the second stator are arranged so that the magnetic poles of the permanent magnets facing each other in the direction of the movable axis are different from each other. A shut-off valve, which is disposed on one side and the other side in the movable axis direction with a mover interposed therebetween . A valve body movably provided in the direction of the movable axis;
A flange having an opening;
A compartment with one end communicating with the opening of the flange and the other end closed;
A plurality of magnetic poles arranged in the compartment, movable in the direction of the movable axis, held rotatably about the movable axis, and sandwiching the movable axis in a direction perpendicular to the movable axis A mover comprising a permanent magnet; a mover rotating means for rotating the mover to change the arrangement of the magnetic poles of the permanent magnet of the mover between the first arrangement and the second arrangement; When the magnetic poles of the permanent magnets of the mover are located on the one side of the movable axis direction with the child interposed therebetween, and the magnetic poles of the permanent magnets of the mover are magnetically attracted and held, When the arrangement of the magnetic poles is in the second arrangement, the first stator composed of a member including a permanent magnet that magnetically repels the mover, and the other side in the movable axis direction across the mover The arrangement of the magnetic poles of the permanent magnet of the mover is the second arrangement. The movable element is magnetically attracted and held, and when the arrangement of the magnetic poles of the permanent magnet of the movable element is in the first arrangement, the second element is formed of a member including a permanent magnet that magnetically repels the movable element. A bistable moving means comprising a stator;
Power transmitting means for transmitting the power of the mover of the bistable moving means to the valve body through the opening of the flange, and operating the valve body to an open or closed position;
The first stator and the second stator are:
The magnetic pole directions are parallel to the movable shaft, the magnetic pole directions are opposite to the other, and are spaced apart so as not to contact the movable element in a direction perpendicular to the movable shaft across the movable shaft. A set of permanent magnets arranged
The set of permanent magnets of the first stator and the set of permanent magnets of the second stator are such that the magnetic poles of the permanent magnets facing each other in the direction of the movable axis are different from each other. A shut-off valve, which is disposed on one side and the other side in the movable axis direction with a mover interposed therebetween . In the shut-off valve according to any one of claims 1 to 6,
The mover rotating means is
A shut-off valve, wherein the mover is rotated by applying a magnetic field to a permanent magnet of the mover . The shut-off valve according to claim 7,
The mover rotating means is
Arranged outside the compartment,
An electromagnetic coil, and first and second yokes having one end connected to or integrated with one end and the other end of the core of the electromagnetic coil;
The other ends of the first and second yokes are
A shut-off valve, wherein the shut-off valve is disposed so as to be substantially opposed to a pair of adjacent magnetic poles on an outer periphery of a permanent magnet of the mover from a direction substantially orthogonal to the movable shaft . The shut-off valve according to claim 8,
The shutoff valve, wherein the first and second yokes have an arcuate shape at the other end . The shut-off valve according to claim 8 or 9,
A line connecting the center of the other end of the first yoke and the movable shaft so as to be orthogonal to the other end of the first yoke is on the outer periphery of the permanent magnet of the mover. A crossing angle between a line connecting the center of the magnetic pole and the movable axis so as to be orthogonal, and a line connecting the center of the other end of the second yoke and the movable axis so as to be orthogonal to the second axis The crossing angle between the center of the magnetic pole on the outer periphery of the permanent magnet of the mover that is substantially opposite to the other end of the yoke and the line that connects the movable axis so as to be orthogonal to each other in the non-excited state of the electromagnetic coil A shut-off valve characterized by being in a range larger than 0 ° and smaller than 90 ° when viewed from the movable axis direction . The shut-off valve according to claim 10,
The shut-off valve , wherein the setting of the crossing angle is performed by setting a rotation angle around the movable shaft of the stator . The shut-off valve according to claim 10,
The isolation valve is characterized in that the crossing angle is set by making the first and second yokes asymmetrical in shape or arrangement . In the shut-off valve according to any one of claims 1 to 12,
The shut-off valve , wherein the permanent magnet of the mover is formed in a columnar shape or a cylindrical shape . The shutoff valve according to any one of claims 1 to 13,
The shut-off valve , wherein the movable element is connected in the movable axis direction of a nonmagnetic shaft that is movable in the movable axis direction and is rotatably held around the movable axis . The shut-off valve according to any one of claims 1 to 14,
The permanent magnet of the mover is
The length in the movable axis direction is opposed to the permanent magnet constituting the first stator and the permanent magnet constituting the second stator arranged on both sides in the movable axis direction across the mover. A shut-off valve characterized in that the distance is less than the distance between surfaces . In the shutoff valve according to any one of claims 1 to 15,
The mover is
A shut-off valve comprising a plurality of permanent magnets arranged with magnetic poles facing each other across the movable shaft in a direction orthogonal to the movable shaft . The shut-off valve according to claim 16,
The mover is
A first permanent magnet located approximately in the center of the movable axis direction;
Second and third permanent magnets located on both sides in the movable axis direction across the first permanent magnet,
The length of the first permanent magnet in the opposing magnetic pole direction is longer than the length of the second and third permanent magnets in the opposing magnetic pole direction . A valve body movably provided in the direction of the movable axis;
A flange having an opening;
A compartment with one end communicating with the opening of the flange and the other end closed;
A plurality of magnetic poles are disposed in the compartment, are movable in the direction of the movable axis, are rotatably held around the movable axis, and sandwich the movable axis in a direction perpendicular to the movable axis. A first permanent magnet and a second permanent magnet separated from each other in the direction of the movable axis and connected to each other by a non-magnetic member, and the distance between the magnetic poles facing each other across the movable axis of the second permanent magnet is The first and second movable magnets are made larger than the distance between the magnetic poles facing each other across the movable shaft of the first permanent magnet, and a magnetic field is applied to the second permanent magnet to rotate the first mover. A mover rotating means for switching the arrangement of the magnetic poles of the two permanent magnets between the first arrangement and the second arrangement, and one side of the movable axis direction with the first permanent magnet interposed therebetween, When the magnetic pole arrangement of the first permanent magnet is in the first arrangement, When the first permanent magnet is magnetically attracted and held, and the arrangement of the magnetic poles of the first permanent magnet is in the second arrangement, the first permanent magnet is configured by a member including a permanent magnet that magnetically repels the first permanent magnet. When the first permanent magnet is located on the other side in the movable axis direction with the first permanent magnet sandwiched therebetween, and the magnetic pole of the first permanent magnet is in the second arrangement, the first permanent When the magnet is magnetically attracted and held, and the magnetic pole of the first permanent magnet is in the first arrangement, the second stator is composed of a member including a permanent magnet that magnetically repels the first permanent magnet. A bistable moving means comprising:
Power transmitting means for transmitting the power of the mover of the bistable moving means to the valve body through the opening of the flange, and for operating the valve body to an open or closed position;
Shut-off valve, characterized in that it comprises a. In the shut-off valve according to any one of claims 1 to 18,
The power transmission means is
A shut-off valve comprising means for transmitting a force in the direction of the movable axis of the mover to the valve body and suppressing transmission of a rotational force about the movable axis of the mover to the valve body . In the shut-off valve according to any one of claims 1 to 19,
A shut-off valve , wherein a chamfered portion is formed on both or one of the adjacent edges of the movable element and the stator . In the shutoff valve according to any one of claims 1 to 20,
The said valve body is provided with the rotation stop means which blocks | prevents rotation centering on the said movable shaft, The cutoff valve characterized by the above-mentioned. In the shut-off valve according to any one of claims 1 to 21,
A shut-off valve comprising means for limiting a movable range of the movable element in a movable axis direction . In the shutoff valve according to any one of claims 1 to 22,
A shut-off valve , wherein a force characteristic when the valve element is operated to a closed position and a force characteristic when the valve element is operated to an open position are asymmetric .