WO2018110000A1 - Actionneur électromagnétique et mécanisme de régulation hydraulique - Google Patents

Actionneur électromagnétique et mécanisme de régulation hydraulique Download PDF

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Publication number
WO2018110000A1
WO2018110000A1 PCT/JP2017/032283 JP2017032283W WO2018110000A1 WO 2018110000 A1 WO2018110000 A1 WO 2018110000A1 JP 2017032283 W JP2017032283 W JP 2017032283W WO 2018110000 A1 WO2018110000 A1 WO 2018110000A1
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WO
WIPO (PCT)
Prior art keywords
mover
electromagnetic actuator
guide
stator
axial direction
Prior art date
Application number
PCT/JP2017/032283
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English (en)
Japanese (ja)
Inventor
将司 石川
小川　徹
紘子 池田
信一 山口
Original Assignee
三菱電機株式会社
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 三菱電機株式会社 filed Critical 三菱電機株式会社
Priority to JP2018507656A priority Critical patent/JP6333496B1/ja
Publication of WO2018110000A1 publication Critical patent/WO2018110000A1/fr

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    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K33/00—Motors with reciprocating, oscillating or vibrating magnet, armature or coil system
    • H02K33/02—Motors with reciprocating, oscillating or vibrating magnet, armature or coil system with armatures moved one way by energisation of a single coil system and returned by mechanical force, e.g. by springs

Definitions

  • the present invention relates to an electromagnetic actuator that controls opening and closing of a valve by linearly moving a mover of a magnetic body by a magnetic attraction force.
  • the present invention also relates to a hydraulic adjustment mechanism using this.
  • a conventional electromagnetically operated valve actuator integrally connects a rod supported at both ends by a bearing and a movable iron core, attracts them to the stator side by an exciting current of an electromagnetic coil, and makes contact with one end of the rod.
  • the valve body is operated to control the opening and closing of the valve (see, for example, Patent Document 1).
  • the conventional electromagnetic actuator includes an outer housing in which a bottomed cylindrical body and a fixed core are coupled via a non-magnetic cylindrical body, surrounded by a coil, made of a magnetic material and covered with the coil.
  • an electromagnetic actuator in which a bottom cylindrical body and a fixed core are coupled to each other, and a drive rod that movably penetrates the fixed core is coupled to a movable core that is accommodated in the inner housing so as to be movable in the axial direction.
  • the other end of the guide shaft made of a non-magnetic material having a support rod in contact with the closed end of the bottomed cylindrical body at one end is one end side of the through hole provided in the movable core
  • One end of the drive rod that is inserted through the first bearing member and supported by the second bearing member attached to the fixed core so as to be movable in the axial direction is fitted and fixed to the other end side of the through hole.
  • the conventional electromagnetically operated valve actuator has a problem that the axial length of the actuator cannot be shortened because the bearings are provided at both ends of the rod that is integrally connected to the movable iron core.
  • the drive rod is provided on the axis of the bottomed cylindrical body, the fitting length between the movable core and the drive rod and the movable core and the bottomed cylindrical body is shortened, and the movable core is There was a problem of tilting when moving in the axial direction.
  • the portion of the non-magnetic cylindrical body provided on the outer periphery of the movable core in order to suppress the tilt becomes a magnetic resistance and the thrust is reduced.
  • the present invention has been made to solve the above-described problems, and an object of the present invention is to provide an electromagnetic actuator that can ensure thrust even if it is downsized. It is another object of the present invention to provide a small hydraulic adjustment mechanism.
  • the electromagnetic actuator according to the present invention includes a stator in which a cylindrical space is formed in an axial direction therein, a movable element that is disposed in the cylindrical space and is movable along the axial direction of the stator, An output portion projecting from at least one of end faces in the moving direction of the mover, a guide fitting portion provided on the outer diameter side of the mover from the output portion, the guide fitting portion and the axial direction And a slidable guide portion.
  • the hydraulic adjustment mechanism according to the present invention includes the electromagnetic actuator according to the present invention and a valve that opens and closes by an axial reciprocation of the output portion of the electromagnetic actuator.
  • the electromagnetic actuator of the present invention it is possible to ensure thrust even if it is downsized. Further, according to the hydraulic pressure adjusting mechanism of the present invention, sufficient thrust can be ensured and the size can be reduced.
  • FIG. 1 is a cross-sectional view schematically showing an electromagnetic actuator according to Embodiment 1 of the present invention.
  • the electromagnetic actuator 100 includes a coil 1 that generates a magnetic attractive force, and a stator 2 that is disposed so as to surround the coil 1 and in which a cylindrical space 8 is formed.
  • the axial direction of the cylindrical space of the stator 2 is the same as the axial direction of the stator 2.
  • the movable element 3 disposed in the cylindrical space 8 of the stator 2 and movable along the axial direction of the stator 2, and the shaft portion 41 provided by being press-fitted on the center line B of the movable element 3.
  • an output element 4 having an output part 40 protruding from at least one of the end faces in the moving direction of the mover 3 is provided.
  • a guide fitting portion 50 is provided in the mover 3 along the axial direction on the outer diameter side of the output piece 4 of the mover 3, and the guide portion 5 slidable in the axial direction with the guide fitting portion 50. Is provided.
  • FIG. 2 is a cross-sectional view showing a part of the electromagnetic actuator 100, in which the movable element 3, the output element 4 and the guide portion 5 of FIG. 1 are extracted.
  • the output element 4 is disposed on the center line of the movable element 3
  • the guide portion 5 is disposed on the outer diameter side of the shaft portion 41 of the output element 4.
  • FIG. 1 When the coil 1 is energized by an external power source (not shown), a magnetic flux ⁇ is generated as shown in FIG.
  • the broken line in FIG. 1 indicates the magnetic flux ⁇ when the coil 1 is energized clockwise when the coil 1 is viewed in the direction in which the output unit 40 projects from the mover 3 (the direction from the top to the bottom in FIG. 1). is there.
  • the magnetic flux ⁇ flows through a magnetic circuit formed by the stator 2 and the mover 3, and generates a magnetic attractive force between the stator 2 and the mover 3. Then, due to the axial component of the magnetic attractive force, the mover 3 moves in the direction in which the output unit 40 projects.
  • the coil 1 is energized clockwise. However, even if the coil 1 is energized counterclockwise, the direction of the magnetic flux ⁇ is opposite, but a magnetic attractive force is generated in the mover 3 and the stator 2. Needless to say, the mover 3 moves in the direction in which the output unit 40 projects.
  • the stator 2 is made of a magnetic material and forms a cylindrical space in the axial direction.
  • a first opening 21 is provided on one end surface in the axial direction of the stator 2 so that the output unit 40 can be penetrated from the space of the stator 2 to the outside, and the other end surface of the stator 2 is provided on the other end surface.
  • the 2nd opening part 23 which penetrates an outer side and the inside of space is provided.
  • the stator 2 has a cylindrical magnetic core 24 that extends from the second opening 23 side to the first opening 21 side in the cylindrical space.
  • the cylindrical core portion 24 is disposed so as to partition a part of the space of the stator 2 in the axial direction, and the coil 1 is disposed on the outer diameter side of the core portion 24 in the space of the stator 2.
  • the mover 3 is disposed on the inner diameter side of the core portion 24. Furthermore, the stator 2 has a protruding portion 25 that protrudes in the axial direction from the first opening 21 side toward the core portion 24.
  • the core part 24 and the protrusion part 25 are arrange
  • the side wall of the stator 2 is arrange
  • a magnetic circuit through which the magnetic flux ⁇ passes through the core portion 24 and the protruding portion 25 is formed, and a part thereof is shared with the mover 3. That is, a magnetic circuit through which the magnetic flux ⁇ passes in the order of the core portion 24, the mover 3, and the protruding portion 25 is formed.
  • the mover 3 is formed of a magnetic material, is surrounded by the coil 1 in the cylindrical space of the stator 2, and is arranged to be movable in the axial direction.
  • the mover 3 is held by, for example, a spring force of a spring (not shown) that is disposed between the mover 3 in the axial direction and the first opening 21 and that can extend and contract in the axial direction.
  • the mover 3 When the coil 1 is energized, the mover 3 shares a part of the magnetic flux ⁇ passing through the stator 2 and forms a magnetic circuit together with the stator 2.
  • the thrust force that moves the mover 3 in the axial direction is larger than the reaction force, for example, the resultant force such as spring force or friction force, The mover 3 is moved toward the first opening 21 in the axial direction from which the output unit 40 projects.
  • the mover 3 has a guide fitting part 50 for arranging the guide part 5 on the outer diameter side of the output element 4 provided on the center line of the mover 3 along the moving direction.
  • the guide fitting part 50 here is a hole.
  • the center line (not shown) of the output element 4 and the stator 2 is arranged on the same line as the center line of the movable element 3.
  • the output element 4 is formed, for example, in a cylindrical shape, and is fixed integrally with the mover 3 by press-fitting and arranging the shaft portion 41 of the output element 4 in a hole provided on the center line of the mover 3. Further, the output part 40 which is one end of the output element 4 projects from the end face of the movable element 3 toward the first opening 21 side which is an opening having a diameter larger than the diameter of the output part 40 provided in the stator 2. Arranged. As a result, the output element 4 also moves in the axial direction as the mover 3 moves, and the output part 40 of the output element 4 passes through the first opening 21 from the cylindrical space of the stator 2 and is fixed. It is exposed to the outside of the child 2.
  • the second opening 23 is not necessarily provided.
  • the magnetic resistance of the second opening 23 is larger than that covered with the stator 2, and therefore, the second opening 23 is not caused by the thrust of the mover 3. Therefore, it is easy to suppress the magnetic flux ⁇ toward the opposing stator 2 side.
  • the guide part 5 is formed in a columnar shape, for example, and is disposed along a guide fitting part 50 provided on the mover 3.
  • the guide portion 5 is disposed so as to penetrate the mover 3, and one end thereof is supported by a fixing portion 22 provided in the stator 2 on the axial extension line. Since the guide part 5 is arranged on the outer diameter side of the shaft part 41 of the output element 4, the fitting length between the movable element 3 and the output element 4 and the fitting between the guide fitting part 50 and the guide part 5 are set. Both lengths can be secured sufficiently without increasing the size. As a result, the output element 4 can be firmly fixed to the movable element 3 and the inclination of the movable element 3 can be suppressed.
  • the fitting length is an axial length that the movable element 3 and the output element 4 face and an axial length that the guide fitting part 50 and the guide part 5 face.
  • the operation of the electromagnetic actuator 100 will be described in more detail.
  • the movable element 3 and the output element 4 are held by spring force.
  • the position shown in FIG. 1 is this state.
  • it can adjust suitably by changing the arrangement
  • the reciprocating motion of the movable element 3 and the output element 4 in the axial direction is performed by switching between energization and non-energization of the coil 1.
  • the output unit 40 is a spool valve 43 described later
  • the flow path is opened or closed by reciprocating movement of the mover 3 and the output element 4, and the hydraulic valve that can adjust the amount of oil flowing in the flow path is opened and closed. It can be set as the hydraulic adjustment mechanism which performs.
  • a motor energization mechanism that controls the energization state of the motor by arranging a switch for energizing the motor at the tip of the reciprocating motion of the output unit 40 and pressing the switch at the output unit 40 using the reciprocating motion. It can be.
  • the output element 4 is installed on the movable element 3 along the center line of the movable element 3, and the guide portion 5 is provided on the outer diameter side of the output element 4 of the movable element 3. It is installed in the guide fitting part 50 so that fitting is possible. Since this configuration is adopted, the fitting length between the output element 4 and the movable element 3 and the fitting between the guide part 5 and the guide fitting part 50 can be achieved without increasing the axial length of the electromagnetic actuator 100. Both lengths can be secured. Thereby, it is possible to simultaneously realize the firm fixation of the output element 4 to the movable element 3 and the suppression of the inclination of the movable element 3.
  • FIG. FIG. 3 is a cross-sectional view schematically showing the electromagnetic actuator according to the second embodiment of the present invention
  • FIG. 4 is a perspective view schematically showing the electromagnetic actuator according to the second embodiment of the present invention.
  • FIG. 4 shows a part of the coil 1, the stator 2, and the mover 3 in a sectional view for convenience of explanation. 3 and 4, the same reference numerals as those in FIG. 1 denote the same or corresponding components, and the description thereof is omitted.
  • the first embodiment is different from the first embodiment in that a holding portion 6 for holding the other end portion of the guide portion 5 is provided in the stator 2. Only portions different in configuration and operation from the first embodiment will be described.
  • the holding portion 6 is formed by, for example, a press plate or the like arranged so that a holding plate formed in a disk shape closes the second opening 23 of the stator 2.
  • the holding unit 6 holds the guide unit 5 by connecting or integrally forming the holding plate and the other end of the guide unit 5 by welding, bonding, press-fitting, or the like.
  • the guide part 5 is formed in a columnar shape, for example, and is disposed along a guide fitting part 50 provided on the outer diameter side from the center line of the movable element 3.
  • the guide portion 5 is disposed so as to penetrate the mover 3 in the axial direction.
  • One end of the guide portion 5 is supported by a fixing portion 22 provided on the stator 2 on the axial extension line, and the other end is held by the holding portion 6. Retained.
  • the holding part 6 is shown as being formed by arranging the holding plate in the second opening 23 provided in the stator 2.
  • the second opening 23 is provided in the stator 2.
  • the shape may be integrally covered with the stator 2 and the other end of the guide portion 5 may be held.
  • a hole for inserting and arranging the guide portion 5 in the stator 2 may be provided, and the holding portion 6 configured to be press-fitted and held may be provided. Both hold the other axial end of the guide portion 5.
  • the output element 4 can be firmly fixed to the mover 3 and the inclination of the mover 3 can be simultaneously suppressed. Further, by improving the rigidity of the guide portion 5, it is possible to further suppress the center line of the output element 4 and the movable element 3 from being inclined with respect to the center line of the stator 2. Furthermore, by suppressing the inclination of the mover 3, the radial component of the magnetic attractive force acting on the mover 3 is suppressed, and the frictional force can be reduced. As a result, the thrust can be secured and the size can be reduced.
  • FIG. 5 is a cross-sectional view schematically showing an electromagnetic actuator according to Embodiment 3 of the present invention.
  • the same reference numerals as those in FIGS. 1 and 3 denote the same or corresponding components, and the description thereof is omitted.
  • the first and second embodiments are different from the first and second embodiments in that a fluid passage 7 is provided in a part of the side wall of the guide fitting portion 50 of the mover 3 on which the guide portion 5 is disposed.
  • Embodiments 1 and 2 Only parts that differ from Embodiments 1 and 2 in configuration and operation will be described.
  • a part of the side wall on which the guide portion 5 and the guide fitting portion 50 slide is used as a fluid passage 7.
  • 6 is a cross-sectional view of the movable element 3, the output element 4 and the guide portion 5 extracted from FIG. 5.
  • the output element 4 and the outside of the output element 4 are arranged on the center line of the movable element 3.
  • the guide portion 5 is disposed on the radial side.
  • the guide fitting portion 50 is disposed on the outer diameter side of the shaft portion 41 of the output element 4 located on the center line of the mover 3 and penetrates the mover 3 in the axial direction.
  • the center line of the stator 2 and the output element 4 is on the same line as the center line of the mover 3.
  • the guide portion 5 is, for example, a columnar shape, and is formed so that a cross-sectional area of a surface perpendicular to the axial direction is smaller than a cross-sectional area perpendicular to the axial direction of the guide fitting portion 50.
  • a part of the inner peripheral surface of the guide fitting part 50 and the outer periphery of the guide part 5 are arranged by arranging the center line of the guide part 5 on the outer diameter side with respect to the center line of the guide fitting part 50.
  • a part of the surface is slid.
  • a gap is formed in the axial direction between the inner peripheral surface of the guide fitting portion 50 excluding a part serving as a sliding surface and the outer peripheral surface of the guide portion 5, and the passage 7 can be secured.
  • a magnetic flux ⁇ is generated as shown in FIG.
  • the magnetic flux ⁇ passes through a magnetic circuit formed by the stator 2 and the mover 3, and a magnetic attraction force that is a part of the thrust that moves in the direction in which the output unit 40 projects from the mover 3.
  • a reaction force such as a spring force acts on the mover in a direction opposite to the magnetic attractive force.
  • a fluid such as oil moves in the passage 7 in a direction opposite to the moving direction of the movable element 3 and the output element 4.
  • the coil 1 When the coil 1 is not energized, the magnetic flux ⁇ is not generated and the magnetic attractive force does not act on the mover 3.
  • the thrust acting on the movable element 3 falls below the reaction force, the movable element 3 and the output element 4 are again returned to the positions before energization, and the movement of the fluid in the passage 7 is opposite to the movement of the fluid at the time of energization. It becomes the direction.
  • the thrust can be secured and the size can be reduced as in the first and second embodiments.
  • an increase in internal pressure that causes an increase in reaction force can be prevented by allowing fluid inside the actuator to pass.
  • a fluid that is a lubricant, such as oil flows between the sliding surfaces of the mover 3 and the guide portion 5, the sliding frictional force can be suppressed, and an increase in reaction force can be suppressed.
  • the center line of the guide part 5 is located on the outer diameter side with respect to the center line of the movable element 3 with respect to the center line of the guide fitting part 50.
  • the center line may be on the inner diameter side with respect to the center line of the guide fitting portion 50, and the passage 7 may be secured on the outer diameter side of the guide portion 5.
  • the cross-sectional shape of the guide part 5 may be a semicircle, and the center of the arc may be arranged on the center line of the guide fitting part 50. In any case, by ensuring the passage 7 in the guide fitting portion 50, an increase in internal pressure can be prevented.
  • the frictional force of the semicircular arc portion that is the sliding surface can be suppressed.
  • the axial cross-sectional area of the hole 22 of the fixing part that supports the guide part 5 is larger than the axial cross-sectional area of the guide part 5.
  • the guide fitting portion 50 provided in the mover 3 may be formed so as to form a groove that opens to the outer diameter side by cutting out a part of the outer peripheral portion of the mover 3 as shown in FIG.
  • the cross-sectional area of the guide part 5 may be equal to or larger than the cross-sectional area of the guide fitting part 50.
  • FIG. 7 is a perspective view schematically showing the electromagnetic actuator according to the fourth embodiment of the present invention.
  • the same reference numerals as those in FIGS. 1 to 6 denote the same or corresponding components, and the description thereof is omitted.
  • the opening 26 is provided in a part of the stator 2 and the set of the guide fitting part 50 and the guide part 5 is perpendicular to the center line of the mover 3.
  • the movable element 3 is arranged in a point symmetry with the center line of the mover 3 as a symmetric point.
  • Embodiments 1 to 3 Only the differences in configuration and operation from Embodiments 1 to 3 will be described.
  • the stator is placed on an extension line from the center line of the mover 3 on which the output element 4 is disposed toward the guide portion 5.
  • the open part 26 which makes the cylindrical space of 2 and the exterior communicate, and exposes the coil 1 to the exterior from the stator 2 is provided. By providing the opening portion 26, a part of the coil 1 is exposed to the outside from the stator 2.
  • the opening portion 26 is formed by cutting out a part in the circumferential direction of the side wall of the stator 2 disposed on the outer peripheral side of the coil 1 and a wall on one end face side in the axial direction of the stator 2. ing.
  • the magnetic circuit formed by the coil 1 is not limited to the shape in which the opening 26 is formed over the entire axial direction in a part of the side wall of the stator 2 in the circumferential direction.
  • a part of the axial direction in the circumferential direction of the side wall of the stator 2 may be cut away to form the opening 26.
  • the opening part 26 is opened so that the guide part 5 is disposed within the open range when the plane perpendicular to the axial direction of the electromagnetic actuator 100 is the viewpoint and the center line of the stator 2 is the center.
  • the open portion 26 and the guide portion 5 are provided point-symmetrically with the center line of the stator 2 as a symmetric point in a cross section perpendicular to the center line of the stator 2, for example.
  • the magnetic flux ⁇ when the electromagnetic actuator 100 is energized will be described.
  • a magnetic flux ⁇ is generated.
  • the magnetic flux ⁇ passes through a magnetic circuit formed by the stator 2 and the mover 3.
  • the open portion 26 opened so that a part of the coil 1 is exposed to the outside has a larger magnetic resistance than when the open portion 26 is not provided. Therefore, the magnetic flux ⁇ is less likely to flow through the open portion 26.
  • the guide portion 5 has a straight line connecting one circumferential end of the opening 26 and the center of the mover 3 in the cross section of the stator perpendicular to the axial direction, and the other circumferential end and the mover 3. Therefore, the magnetic flux ⁇ flowing through the guide portion 5 is also reduced. For this reason, the magnetic resistance of a magnetic circuit falls rather than the case where the guide part 5 exists on a magnetic circuit. Therefore, the magnetic flux ⁇ passing through the magnetic circuit increases.
  • the guide portion 5 is unlikely to become a magnetic resistance of the magnetic flux ⁇ caused by the thrust, and a reduction in thrust for moving the mover 3 can be suppressed.
  • the guide part 5 of the electromagnetic actuator 100 of the present application may cause a new problem that the linear motor does not have such that the magnetic flux ⁇ passes through the guide part 5 and the thrust is reduced.
  • FIG. FIG. 8 is a perspective view schematically showing the electromagnetic actuator according to the fifth embodiment of the present invention.
  • the same reference numerals as those in FIGS. 1 to 7 denote the same or corresponding components, and the description thereof is omitted.
  • the first to fourth embodiments of the present invention are different from the first to fourth embodiments in that a support portion 53 is disposed from the second opening 23 side in a hole in which the output element 4 of the mover 3 is disposed.
  • the mover 3 has a hole penetrating the center line.
  • the shaft portion 41 of the output element 4 is disposed, for example, by press-fitting from the end face of the mover 3 facing the first opening 21, and the other end from the end face of the mover 3 facing the second opening 23.
  • One end of the support part 53 held by the holding part 6 is arranged.
  • the shaft part 41 and the support part 53 of the output element 4 arranged in the hole are separated from each other, and the output element is secured so as to ensure a sufficient fitting length.
  • Four shaft portions 41 are arranged.
  • the support portion 53 is formed in a columnar shape, for example, and is disposed on the center line of the mover 3. Further, the outer peripheral surface of the support portion 53 slides with the side wall of the hole provided in the center line of the mover 3 when the mover 3 moves in the axial direction. In the present embodiment, the center line of the support portion 53 and the center line of the mover 3 are on the same line.
  • the shaft portion 41 and the support portion 53 of the output element 4 do not necessarily have to be separated from each other, and may be in contact, for example, when energization is stopped.
  • a holding plate in which a hole capable of press-fitting the support portion 53 is disposed in the second opening 23 of the stator 2 is used as the holding portion 6, and the other end portion of the support portion 53 is press-fitted into the hole for support.
  • the unit 53 may be held by the holding unit 6.
  • the holding portion 6 is not limited to the holding portion 6 that holds the support portion 53 by providing a hole, and other holding portions 6 such as a connection to the stator 2 by welding or adhesion may be provided.
  • the embodiment 3 As in 1 to 4, the thrust can be secured and the electromagnetic actuator can be downsized. Further, in addition to the sliding between the guide fitting portion 50 and the guide portion 5, the hole provided on the center line of the mover 3 and the support portion 53 slide, so that the mover 3 moves in the axial direction. There is an effect of increasing the sliding area and suppressing the center of the mover from being inclined with respect to the center line of the stator 2. Further, by arranging both the output element 4 and the support portion 53 in the hole on the center line provided so as to penetrate the movable element 3, the above-described effects can be obtained without increasing the number of machining points.
  • Embodiments 1 to 3 and 5 of the present invention an example in which one guide portion 5 is provided is shown.
  • Embodiment 4 an example in which two guide portions 5 are provided is shown. And it is good also as three as shown in FIG.
  • four or more guide portions 5 may be provided. As described above, by providing a plurality of guide portions 5, the sliding area between the guide fitting portion 50 provided on the mover 3 and the guide portion 5 is increased, so that the support of the mover 3 is strengthened.
  • the plurality of guide portions 5 are on the outer diameter side from the shaft portion 41 of the output element 4 with respect to the center line of the mover 3 so as not to interfere with the shaft portion 41 of the output element 4. Should just be arranged.
  • the plurality of guide portions 5 are further preferably arranged point-symmetrically with respect to the center line of the mover 3 in the cross section perpendicular to the center line of the mover 3. In this case, the thrust can be ensured even if the size is reduced, and the radial magnetic attractive force acting on the mover 3 is easily canceled by being arranged point-symmetrically, and the sliding caused by the magnetic attractive force in the radial direction is easily canceled. There is an effect of reducing the frictional force on the moving surface.
  • the guide unit 5 has an example in which one end is fixed by the holding unit 6 and the other end is fixed to the fixing unit 22, but as shown in FIGS. 11 and 12, One end may be fixed to the holding portion 6 and the other end may be a free end.
  • the radial force acting on the guide part 5 can be easily released, and the effect of making the guide part 5 difficult to break can be obtained.
  • fixed part 22 of the stator 2 can be abbreviate
  • positioning the output element 4 does not need to penetrate the needle
  • the guide portion 5 may be disposed so as not to protrude from the guide fitting portion 50.
  • the guide fitting portion 50 may or may not penetrate the mover 3. When it does not penetrate, it can function as a stop when arranging. When penetrating, it can function as the passage 7.
  • a through passage 31 for use as the fluid passage 7 is disposed on the outer diameter side of the shaft portion 41 of the output element 4 with respect to the center line of the mover 3 and penetrates in the axial direction. May be provided. Further, the guide portion 5 may not be disposed in the penetrating guide fitting portion 50 and may be used as the through passage 31. By flowing the fluid through the through passage 31, it is possible to prevent an increase in internal pressure that causes a reaction force increase.
  • a plurality of through passages 31 may be provided so as to penetrate through the mover 3.
  • the penetrating path 31 is provided point-symmetrically with the center line of the mover 3 as a symmetric point, so that the fluid flows through each penetrating path 31.
  • the moving force in the radial direction that acts on the is easily offset. Thereby, the effect of reducing the frictional force on the sliding surface between the guide part 5 and the guide fitting part 50 due to the moving force in the radial direction is exhibited.
  • the cross-sectional shape of the guide portion 5 is a circle, a polygon, or a partial arc. It is good also as the polygon which has. Moreover, the cross-sectional shape of the guide fitting part 50 and the penetration path 31 is good also as a polygon which has a circle, a polygon, and a partial arc. If any one of the shapes is appropriately combined, a good sliding surface and a passage 7 penetrating the mover 3 are obtained.
  • two thin portions 32 can be formed in the mover 3 by arranging the guide fitting portions 50 as shown in FIG.
  • the thin-walled portion 32 refers to a portion of the mover 3 perpendicular to the axial direction when the portion excluding the guide fitting portion 50 from the mover 3 is a flesh portion of the mover 3. It refers to the portion with the smallest wall thickness, which is the thickness of the meat portion.
  • the thin portion 32 is a portion where the distance between the outer peripheral surface of the mover 3 and the inner peripheral surface of the guide fitting portion 50 is the smallest. As shown in FIG.
  • the load direction received by the guide fitting portion 50 from the guide portion 5 does not face the thin portion 32, that is, the guide fitting portion 50 is It is preferable to provide the guide part 5 so that the load point received from the guide part 5 does not contact the thin part 32. Thereby, since an excessive load does not act on the thin portion 32, it is possible to prevent the thin portion 32 from being deformed or damaged.
  • the energization direction is described as being constant for convenience of explanation, but the energization direction may be reversed.
  • the direction of the magnetic flux ⁇ is reversed, but the direction in which the mover 3 moves by the magnetic attractive force when the coil 1 is energized is the same regardless of the direction of the magnetic flux ⁇ . Therefore, the same effect as in the first to fifth embodiments can be obtained.
  • the stator 2 is configured integrally with a core portion 24 disposed between the coil 1 and the mover 3 and a protruding portion 25 protruding toward the core portion 24.
  • the core part 24 and the protrusion part 25 may be formed separately, and you may comprise the stator 2 by what combined.
  • the shape shown in the drawing is not necessarily limited as long as it forms a magnetic circuit with the mover 3 and gives thrust to the mover 3. In this case, the same effects as those of the first to fifth embodiments can be obtained, and a magnetic circuit having a magnetic flux path intended during energization can be easily formed, and the thrust acting on the mover 3 can be adjusted.
  • the holding plate forming the output element 4, the guide portion 5, and the holding portion 6 may be a non-magnetic material or a magnetic material.
  • the leakage magnetic flux from the stator 2 that does not contribute to the thrust to the holding plate or the guide portion 5 can be reduced.
  • the magnetic flux (alpha) resulting from thrust can be increased and thrust can be improved more.
  • the output part 40 showed the example which protrudes from the axial direction end surface of the needle
  • the holding portion 6 is formed as a holding portion 6 in which a hole is formed in the stator 2 and the end portion of the guide portion 5 is press-fitted and held, or when the holding plate is provided in the holding portion 6 It is good to provide the hole for the output part 40 to project outside to a board. In that case, the same effects as those of the first to fifth embodiments are obtained.
  • the mover 3 and the output unit 40 are separate, and the shaft part 41 of the output element 4 is arranged on the mover 3 by press-fitting or the like, and the mover 3 moves with the output unit 40 on the end surface in the moving direction.
  • mover 3 may have the output part 40 previously, as shown in FIG.
  • the diameter of the guide fitting portion 50 is set. It is necessary to make it smaller than the diameter of the output part 40.
  • the fitting length between the guide fitting portion 50 and the guide portion 5 is the maximum without any limitation. A minute can be secured. Further, similarly to the first to fifth embodiments, the thrust can be secured even if the electromagnetic actuator is downsized, and the number of components can be reduced while the output unit 40 and the mover 3 are strong because they are integrally formed. .
  • FIG. 22 is a cross-sectional view schematically showing a hydraulic pressure adjustment mechanism according to Embodiment 6 of the present invention.
  • FIG. 22 is a cross-sectional view illustrating an outline of a hydraulic pressure adjustment mechanism 200 in which the electromagnetic actuator 100 described in the first embodiment and the hydraulic pressure adjustment unit 101 are combined.
  • the electromagnetic actuator 100 in FIG. 22 differs from the electromagnetic actuator 100 in FIG. 1 in that a spool valve 43 is provided in the output section 40 of the output element 4.
  • a spool valve 43 is provided in the output section 40 of the output element 4.
  • symbol as FIG. 1 has shown the structure which is the same or respond
  • the hydraulic pressure adjustment mechanism 200 includes the electromagnetic actuator 100 having the spool valve 43 and the hydraulic pressure adjustment unit 101.
  • the hydraulic pressure adjusting unit 101 includes a main passage 42 in which the spool valve 43 can move in the axial direction, a first sub-passage 422 that branches from the main passage 42, a second sub-passage 423, and a third sub-passage 424.
  • Each auxiliary passage is provided in an asymmetrical arrangement with respect to the main passage 42.
  • the oil can move in the main passage 42, the first sub passage 422, the second sub passage 423, and the third sub passage 424, and the movement of the spool valve 43 in the axial direction causes the oil pressure in the main passage 42 and each sub passage to be reduced. It can be adjusted to change the amount of oil.
  • the spool valve 43 has a convex portion 44 having a diameter larger than the diameter of the output element 4 as shown in FIG.
  • the main passage 42 is connected to each sub passage or each sub passage to the main passage 42.
  • Limit the movement of oil For example, as shown in FIG. 22, when the convex portion 44 of the spool valve 43 is only at the position of the communication port between the third sub passage 424 and the main passage 42 as the mover 3 of the electromagnetic actuator 100 moves, the main passage 42 is in communication with the first sub-passage 422 and the second sub-passage 423.
  • the operation of the hydraulic adjustment mechanism 200 will be further described.
  • a magnetic flux ⁇ is generated.
  • the magnetic flux ⁇ passes through a magnetic circuit formed by the stator 2 and the mover 3, and a magnetic attractive force acts on the mover 3.
  • mover 3 is guided by the guide part 5, and is moved to the 1st opening part 21 side. Accordingly, the spool valve 43 moves in the axial direction so as to be separated from the first opening 21.
  • the first sub-passage 422 and the second sub-passage 423 communicate with the main passage 42, and the convex portion 44 provided on the spool valve 43 pushes the oil in the main passage 42, and the oil pressure changes.
  • the amount of oil movement to the first sub-passage 422 and the second sub-passage 423 communicating with each other changes due to the change in the hydraulic pressure.
  • the convex portion 44 is positioned at the communication port between the first sub passage 422 and the main passage 42, and the second sub passage 423 and the third sub passage 424 communicate with the main passage 42.
  • oil is pushed by the convex portion 44 and the oil pressure changes, so that the amount of oil moving to the second sub-passage 423 and the third sub-passage 424 changes.
  • the communication port between the main passage 42 and each sub-passage is opened and closed depending on the position of the spool valve 43, and the amount of oil that moves from the main passage 42 communicating with each sub-passage changes due to a change in hydraulic pressure.
  • the magnetic flux ⁇ generated due to the energization of the coil 1 is not generated, and the magnetic attraction force by the magnetic flux ⁇ does not act on the mover 3. Therefore, the mover 3 and the spool valve 43 are again moved in the direction of returning to the position before energization by the spring force.
  • the communication port between each auxiliary passage and the main passage 42 is opened and closed by the convex portion 44, and the amount of oil can be adjusted as appropriate.
  • the electromagnetic actuator 100 that can secure the thrust force of the first to fifth embodiments and can be downsized together with the hydraulic pressure adjusting unit 101, the axial movement of the spool valve 43 is caused by the movement of the mover 3 while being small.
  • the hydraulic pressure adjustment mechanism 200 that can change the movement and position and adjust the hydraulic pressure in the hydraulic pressure adjustment unit 101 can be realized.
  • path of the hydraulic pressure adjustment part 101 in Embodiment 6 illustrated and demonstrated three things asymmetrical with respect to the main channel
  • path does not necessarily need to be asymmetrical. Alternatively, it may be symmetrical.
  • the number of auxiliary passages is not limited to this.
  • each sub-passage inclination and the diameter of the passage may be changed.
  • the hydraulic pressure can be adjusted as the spool valve 43 moves. In the example of the oil flow, the main passage 42 moves in the direction of each sub-passage with the movement of the spool valve 43 when energized.
  • the direction of the second auxiliary passage 423 may be used.
  • the amount of oil in the main passage 42 and each sub passage can be adjusted by adjusting the hydraulic pressure as the spool valve 43 moves.

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Reciprocating, Oscillating Or Vibrating Motors (AREA)

Abstract

Selon la présente invention, cet actionneur électromagnétique est pourvu : d'un stator ayant un espace cylindrique formé axialement en son sein ; d'un dispositif de déplacement disposé à l'intérieur de l'espace cylindrique du stator et déplacé dans la direction axiale du stator ; une section de sortie faisant saillie le long de la ligne centrale du dispositif de déplacement à partir d'au moins l'une des surfaces d'extrémité du dispositif de déplacement dans la direction de déplacement du dispositif de déplacement ; et d'une section de guidage disposée sur une section d'ajustement de guidage disposée plus près du côté de diamètre externe que la ligne centrale du dispositif de déplacement et permettant à la section d'ajustement de guidage de coulisser axialement sur cette dernière. En outre, ce mécanisme de régulation hydraulique est pourvu de l'actionneur électromagnétique de la présente invention et d'une soupape qui fait saillie à partir du stator de l'actionneur électromagnétique et régule la pression hydraulique en effectuant un mouvement de va-et-vient axial.
PCT/JP2017/032283 2016-12-15 2017-09-07 Actionneur électromagnétique et mécanisme de régulation hydraulique WO2018110000A1 (fr)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2020027842A (ja) * 2018-08-10 2020-02-20 豊興工業株式会社 電磁弁

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH08306527A (ja) * 1995-04-27 1996-11-22 Keihin Seiki Mfg Co Ltd リニアソレノイドバルブ
JP2012248196A (ja) * 2011-05-30 2012-12-13 Dh Holdings Co Ltd 能動タイプのエコペダル装置
JP2014027205A (ja) * 2012-07-30 2014-02-06 Denso Corp リニアソレノイド
JP2014110372A (ja) * 2012-12-04 2014-06-12 Keihin Corp リニアソレノイド及びリニアソレノイドバルブ，並びにリニアソレノイドの製造方法

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH08306527A (ja) * 1995-04-27 1996-11-22 Keihin Seiki Mfg Co Ltd リニアソレノイドバルブ
JP2012248196A (ja) * 2011-05-30 2012-12-13 Dh Holdings Co Ltd 能動タイプのエコペダル装置
JP2014027205A (ja) * 2012-07-30 2014-02-06 Denso Corp リニアソレノイド
JP2014110372A (ja) * 2012-12-04 2014-06-12 Keihin Corp リニアソレノイド及びリニアソレノイドバルブ，並びにリニアソレノイドの製造方法

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2020027842A (ja) * 2018-08-10 2020-02-20 豊興工業株式会社 電磁弁
JP7214393B2 (ja) 2018-08-10 2023-01-30 株式会社ジェイテクトフルードパワーシステム 電磁弁

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