WO2022071092A1 - 流体制御弁 - Google Patents
流体制御弁 Download PDFInfo
- Publication number
- WO2022071092A1 WO2022071092A1 PCT/JP2021/034995 JP2021034995W WO2022071092A1 WO 2022071092 A1 WO2022071092 A1 WO 2022071092A1 JP 2021034995 W JP2021034995 W JP 2021034995W WO 2022071092 A1 WO2022071092 A1 WO 2022071092A1
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- WO
- WIPO (PCT)
- Prior art keywords
- valve
- opening
- flow path
- axial direction
- working fluid
- Prior art date
- Legal status (The legal status 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 status listed.)
- Ceased
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K17/00—Safety valves; Equalising valves, e.g. pressure relief valves
- F16K17/02—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side
- F16K17/04—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side spring-loaded
- F16K17/044—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side spring-loaded with more than one spring
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F9/00—Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium
- F16F9/32—Details
- F16F9/44—Means on or in the damper for manual or non-automatic adjustment; such means combined with temperature correction
- F16F9/46—Means on or in the damper for manual or non-automatic adjustment; such means combined with temperature correction allowing control from a distance, i.e. location of means for control input being remote from site of valves, e.g. on damper external wall
- F16F9/465—Means on or in the damper for manual or non-automatic adjustment; such means combined with temperature correction allowing control from a distance, i.e. location of means for control input being remote from site of valves, e.g. on damper external wall using servo control, the servo pressure being created by the flow of damping fluid, e.g. controlling pressure in a chamber downstream of a pilot passage
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K1/00—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
- F16K1/32—Details
- F16K1/34—Cutting-off parts, e.g. valve members, seats
- F16K1/36—Valve members
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K1/00—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
- F16K1/32—Details
- F16K1/34—Cutting-off parts, e.g. valve members, seats
- F16K1/44—Details of seats or valve members of double-seat valves
- F16K1/443—Details of seats or valve members of double-seat valves the seats being in series
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K1/00—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
- F16K1/32—Details
- F16K1/34—Cutting-off parts, e.g. valve members, seats
- F16K1/46—Attachment of sealing rings
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K17/00—Safety valves; Equalising valves, e.g. pressure relief valves
- F16K17/02—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side
- F16K17/04—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side spring-loaded
- F16K17/0493—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side spring-loaded with a spring other than a helicoidal spring
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K17/00—Safety valves; Equalising valves, e.g. pressure relief valves
- F16K17/02—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side
- F16K17/04—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side spring-loaded
- F16K17/10—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side spring-loaded with auxiliary valve for fluid operation of the main valve
- F16K17/105—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side spring-loaded with auxiliary valve for fluid operation of the main valve using choking or throttling means to control the fluid operation of the main valve
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K31/00—Actuating devices; Operating means; Releasing devices
- F16K31/12—Actuating devices; Operating means; Releasing devices actuated by fluid
- F16K31/36—Actuating devices; Operating means; Releasing devices actuated by fluid in which fluid from the circuit is constantly supplied to the fluid motor
- F16K31/40—Actuating devices; Operating means; Releasing devices actuated by fluid in which fluid from the circuit is constantly supplied to the fluid motor with electrically-actuated member in the discharge of the motor
- F16K31/406—Actuating devices; Operating means; Releasing devices actuated by fluid in which fluid from the circuit is constantly supplied to the fluid motor with electrically-actuated member in the discharge of the motor acting on a piston
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K17/00—Safety valves; Equalising valves, e.g. pressure relief valves
- F16K17/02—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side
- F16K17/04—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side spring-loaded
- F16K17/0413—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side spring-loaded in the form of closure plates
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K17/00—Safety valves; Equalising valves, e.g. pressure relief valves
- F16K17/02—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side
- F16K17/04—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side spring-loaded
- F16K17/048—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side spring-loaded combined with other safety valves, or with pressure control devices
Definitions
- the present invention relates to a valve that controls a working fluid, and relates to, for example, a fluid control valve having a relief function capable of discharging the working fluid.
- the valve used to control the working fluid in various industrial fields is equipped with a valve body that is in contact with the valve seat, and the flow rate and pressure of the working fluid can be controlled by adjusting the valve opening. It is possible for such a fluid control valve to detect the fluid pressure on the secondary side and adjust the valve opening to reduce the amount of fluid introduced from the primary side and the flow rate of the working fluid on the primary side.
- the flow rate and pressure of the working fluid are controlled by detecting the fluid pressure of the working fluid and discharging the working fluid to the outside with respect to the fluid pressure above a predetermined value. It is roughly classified into a valve, a valve having a so-called relief function.
- a fluid control valve having a relief function may be required to have a relief function having extremely high responsiveness depending on the equipment used.
- Equipment that uses a fluid control valve with a highly responsive relief function includes a shock absorber, etc., and in order to control the damping force, the piston chamber in which the piston is arranged in the shock absorber and the piston chamber are communicated with each other.
- a fluid control valve having a relief function in which the valve body is separated from the valve seat according to the fluid pressure of the piston chamber is fluidly connected to the reservoir chamber provided so as to be possible.
- Patent Document 1 and the like are given as an example of a fluid control valve having a relief function used in a shock absorber, and the fluid control valve shown here is used in a first flow path communicating with a piston chamber of the shock absorber and a reservoir chamber.
- a valve housing having a second flow path for communication, a valve body and a valve seat provided between the first flow path and the second flow path, a first urging means for urging the valve body in the valve closing direction, and a valve body.
- a second urging means having a lower spring force than the first urging means is provided, and the first urging means and the second urging means are arranged in series. The valve body is pressed against the valve seat by these first urging means and the second urging means, and the valve closed state can be maintained.
- This fluid control valve simultaneously compresses the second urging means and the first urging means to discharge the working fluid when the pressure of the working fluid flowing into the first flow path is large, and also discharges the working fluid.
- the second urging means can be preferentially compressed. That is, when the pressure of the working fluid in the first flow path is small or more and less than large, the working fluid can be discharged without the need for movement against the urging force of the first urging means.
- the present invention has been made by paying attention to such a problem, and the pressure of the working fluid in the first flow path is the same as the responsiveness when the pressure of the working fluid flowing into the first flow path is large. It is an object of the present invention to provide a fluid control valve having extremely high responsiveness when the value is small.
- the fluid control valve of the present invention is used.
- a valve body that is separated from the valve seat and A first urging means for urging the valve body in the valve closing direction and a second urging means having a lower spring force than the first urging means are provided, depending on the pressure of the working fluid in the first flow path.
- a fluid control valve capable of discharging the working fluid to the second flow path.
- the valve body is provided with a base portion urged by the first urging means and an opening / closing portion that is separated from and detached from the valve seat, and is arranged so as to be divided in the axial direction. Is arranged so that the base portion and the opening / closing portion can be separated in the axial direction.
- the opening / closing portion moves against the second urging means having a lower spring force in preference to the base and the first urging means. .. Therefore, when the pressure of the working fluid in the first flow path is small, the opening / closing portion can be moved without moving the base or the first urging means, and a highly responsive fluid control valve can be provided. Further, when the pressure of the working fluid in the first flow path is large, the base portion is further pressed by the second urging means and the opening / closing portion from the state where the opening / closing portion is moving against the second urging means. Since the base, the second urging means, and the opening / closing part move against the first urging means, a highly responsive fluid control valve can be provided.
- the base may be axially slidable with respect to the valve housing in which the base is housed. According to this, since the base is guided by the valve housing, the operation of the valve body can be stabilized.
- the opening / closing portion may be slidable in the axial direction with respect to the base portion. According to this, since the opening / closing portion is guided and moved relatively coaxially with the base portion, the valve opening degree can be controlled with high accuracy.
- the space inside the valve housing in which the base portion and the first urging means are housed is used as a pilot control chamber, and the opening / closing portion has a communication passage connecting the first flow path and the pilot control chamber. You may. According to this, it is possible to change the pressure of the working fluid in the pilot control chamber by changing the flow rate of the working fluid flowing through the pilot control chamber. Can be changed.
- the second urging means may be arranged between the base portion and the opening / closing portion and outside the pilot control chamber. According to this, since the second urging means is not exposed to the pilot control chamber through which the working fluid passes, deterioration of the second urging means and contamination by the second urging means can be prevented.
- FIG. 1 It is sectional drawing which shows the fluid control valve of Example 1 which concerns on this invention. It is sectional drawing which shows the state that the pilot valve was opened in the fluid control valve of Example 1. FIG. It is sectional drawing which shows the state that the pilot valve was closed in the fluid control valve of Example 1. FIG. It is sectional drawing which shows the main valve enlarged in the fluid control valve of Example 1. FIG. It is a top view which shows the 2nd urging means which constitutes the main valve. It is sectional drawing which shows the state which the main valve was closed in the fluid control valve of Example 1, and the state which the 2nd urging means was compressed and opened side by side. FIG.
- FIG. 3 is a cross-sectional view showing side by side a state in which the main valve is closed in the fluid control valve of the first embodiment, and a state in which the first urging means and the second urging means are compressed and opened. It is sectional drawing which shows the main part of the fluid control valve of Example 2 which concerns on this invention.
- the fluid control valve according to the first embodiment will be described with reference to FIGS. 1 to 7.
- the first embodiment will be described by taking a fluid control valve used for the shock absorber as an example, it can also be applied to other uses.
- the upper and lower parts when viewed from the front of FIG. 1 will be described as the upper and lower parts of the fluid control valve. More specifically, the lower side of the paper surface on which the main valve 60 is arranged will be described as the lower side of the fluid control valve, and the upper side of the paper surface on which the solenoid 80 as a drive source is arranged will be described as the upper side of the fluid control valve.
- the fluid control valve V of the present invention is fluidly connected and arranged to the absorber piston chamber P and the reservoir chamber R of the shock absorber A.
- the main valve 60 of the fluid control valve V is opened to allow the working fluid to flow out from the second flow path 13 to the reservoir chamber R. ..
- the fluid control valve V controls the flow rate of the working fluid flowing from the absorber piston chamber P to the reservoir chamber R.
- the fluid control characteristics in the main valve 60 are adjusted by the pilot valve 50.
- the fluid control valve V controls the damping force in the shock absorber A.
- the fluid control valve V is mainly composed of a valve housing 10, a pilot valve 50, a main valve 60, and a solenoid 80.
- the pilot valve 50 is arranged at the upper end in the valve housing 10. Further, the main valve 60 is arranged below the pilot valve 50 in the valve housing 10.
- the pilot valve 50 is composed of a pilot valve body 51 and a pilot valve seat 40a.
- the pilot valve 50 opens and closes when the sealing body 54 constituting the pilot valve body 51 separates from and contacts the pilot valve seat 40a.
- the main valve 60 is composed of a main valve body 61 as a valve body and a main valve seat 45a as a valve seat.
- the main valve 60 is opened and closed by the opening / closing portion 63 constituting the main valve body 61 coming into contact with the main valve seat 45a.
- the solenoid 80 is connected to the valve housing 10 and exerts a driving force on the pilot valve body 51.
- the solenoid 80 is composed of a casing 81, a center post 82, a rod 83, a movable iron core 84, a coil spring 85, a coil 86, a sleeve 87, and bearings 88 and 89. It is mainly composed.
- the casing 81 includes a stepped cylindrical main body 81a into which the center post 82 is inserted and fixed from below in the axial direction.
- the casing 81 is formed with an opening 81b that is continuous with the lower end of the main body 81a and is open downward.
- the center post 82 is formed in a stepped cylindrical shape from a rigid body which is a magnetic material such as iron or silicon steel.
- the center post 82 includes a cylindrical main body portion 82a extending in the axial direction.
- center post 82 has an opening 82b that is continuous with the lower end of the main body 82a and is open to the lower side of the center post 82.
- the rod 83 is formed in a cylindrical shape.
- the rod 83 is inserted through the center post 82 and is arranged so as to be reciprocating in the axial direction.
- the rod 83 is inserted and fixed to the movable iron core 84.
- the rod 83 is moved in accordance with the movable iron core 84 that moves in the valve closing direction.
- the rod 83 moves the pilot valve body 51 in the valve closing direction, that is, downward in the axial direction.
- the upper end portion of the rod 83 is inserted through the bearing 88, and the lower end portion thereof is inserted through the bearing 89.
- These bearings 88 and 89 guide the rod 83 to move in the axial direction. Therefore, the rod 83 is less likely to tilt in the radial direction when moving in the axial direction.
- the rod 83 is formed with a communication passage 83a penetrating in the axial direction.
- the bearing 88 is formed with a communication groove 88a extending in the axial direction. As a result, the influence of the working fluid when the rod 83 and the movable iron core 84 are moved is reduced.
- the coil spring 85 is arranged between the pilot valve seat member 40 and the pilot valve body 51.
- the coil spring 85 urges the pilot valve body 51 in the valve opening direction of the pilot valve 50, that is, upward in the axial direction.
- the coil 86 is an exciting coil wound around the outside of the center post 82 via a bobbin.
- the sleeve 87 is formed in a bottomed cylindrical shape. Further, bearings 88 and 89 that guide the movement of the rod 83 are fitted and fixed to the sleeve 87.
- valve housing 10 side The elements on the valve housing 10 side are the valve housing 10, the pilot valve 50, and the main valve 60.
- valve housing 10 is formed of a metal material or a resin material in an inner stepped cylindrical shape.
- the valve housing 10 is formed with a cylindrical portion 10a, a small-diameter bottomed cylindrical portion 10b, a medium-diameter bottomed cylindrical portion 10c, and a large-diameter bottomed cylindrical portion 10d in this order from above in the axial direction.
- a pilot valve body 51 is inserted into the cylindrical portion 10a from above in the axial direction.
- the pilot valve body 51 is formed in a T-shape in cross-sectional view. Specifically, the pilot valve body 51 is composed of a cylindrical portion 52, a flange portion 53, and a sealing body 54.
- a recess 52a recessed downward in the axial direction is formed at the upper end of the cylindrical portion 52.
- the lower end portion of the rod 83 is in contact with the bottom surface of the recess 52a.
- a communication passage 52b penetrating in the axial direction is formed.
- the cylindrical portion 52 has a stepped cylindrical shape extending in the axial direction. Specifically, the cylindrical portion 52 is formed with a large diameter portion 52c, a medium diameter portion 52d, and a small diameter portion 52e in this order from above in the axial direction.
- a flange portion 53 extending in the outer diameter direction is continuous at the upper end of the large diameter portion 52c. Further, at the lower end of the large diameter portion 52c, a medium diameter portion 52d having a smaller diameter than the large diameter portion 52c is continuous.
- the flange portion 53 has a disk shape extending in the outer diameter direction from the upper end portion of the cylindrical portion 52.
- An annular recess 53a recessed upward in the axial direction is formed at the lower end of the flange 53.
- the outer diameter of the annular recess 53a is formed to be substantially the same as the outer diameter of the annular recess 41 of the pilot valve seat member 40, which will be described later. These outer diameters are formed to be slightly larger than the outer diameter of the coil spring 85.
- a coil spring 85 is disposed in the annular recess 53a and the annular recess 41 of the pilot valve seat member 40. Therefore, when the coil spring 85 is compressed in the axial direction, it is guided by the outer peripheral surfaces of the annular recess 53a and the annular recess 41 of the pilot valve seat member 40, and the coil spring 85 is prevented from being twisted or bent. There is.
- the flange portion 53 is formed with a communication passage 53b penetrating in the axial direction.
- the communication passage 53b communicates the cylindrical portion 10a of the valve housing 10 with the opening 82b of the center post 82 (see FIG. 1).
- the outer peripheral surface of the flange portion 53 is formed so as to be movable while being in sliding contact with the inner peripheral surface of the cylindrical portion 10a of the valve housing 10. As a result, the cylindrical portion 10a can guide the movement of the pilot valve body 51.
- a small diameter portion 52e having a smaller diameter than the medium diameter portion 52d is continuous.
- the small diameter portion 52e is formed with an annular groove 52f that is continuously recessed on the inner diameter side on the lower end surface of the middle diameter portion 52d.
- An inner diameter side end portion of the disk-shaped sealing body 54 is inserted and fixed in the annular groove 52f. That is, the sealing body 54 is cantilevered by the annular groove 52f and protrudes from the annular groove 52f in the outer diameter direction.
- the sealing body 54 is made of a metal material and can be elastically deformed by bending in the axial direction (see FIG. 3). Needless to say, the material forming the sealing body 54 is not limited to metal.
- the sealing body 54 is seated or detached from the pilot valve seat 40a.
- the small-diameter bottomed cylindrical portion 10b is continuous with the cylindrical portion 10a, has a larger diameter inside than the cylindrical portion 10a, and is recessed upward in the axial direction.
- the pilot valve seat member 40 press-fitted from below in the axial direction is integrally fixed to the small-diameter bottomed cylindrical portion 10b in a substantially sealed state.
- the pilot valve seat member 40 is formed of a metal material or a resin material into a circular plate shape.
- An annular recess 41 recessed downward in the axial direction is formed at the upper end of the pilot valve seat member 40.
- annular convex portion 42 protruding upward in the axial direction is formed on the inner diameter side of the annular recess 41.
- the upper end portion of the annular convex portion 42 is a pilot valve seat 40a.
- a circular recess 43 recessed axially downward from the bottom surface of the annular recess 41 is formed on the inner diameter side of the annular convex portion 42. Further, a continuous passage 44 penetrating in the axial direction is formed at the bottom of the circular recess 43.
- the medium-diameter bottomed cylindrical portion 10c is continuous with the small-diameter bottomed cylindrical portion 10b, has a larger diameter inside than the small-diameter bottomed cylindrical portion 10b, and is recessed upward in the axial direction.
- the main valve body 61 and the coil spring 64 are inserted into the medium-diameter bottomed cylindrical portion 10c from the lower side in the axial direction. Further, the upper end portion of the main valve seat member 45 press-fitted from below in the axial direction is integrally fixed to the medium-diameter bottomed cylindrical portion 10c in a substantially sealed state.
- a pilot control chamber S is formed in the space inside the small-diameter bottomed cylindrical portion 10b and the medium-diameter bottomed cylindrical portion 10c in the valve housing 10.
- the pilot control chamber S is defined by a small-diameter bottomed cylindrical portion 10b, a medium-diameter bottomed cylindrical portion 10c, a pilot valve seat member 40, a pilot valve body 51, and a main valve body 61.
- the pilot control chamber S includes the circular recess 43 of the pilot valve seat member 40 and the communication passage 44, and is a flow path on the upstream side of the pilot valve body 51, that is, a flow path on the upstream side of the pilot valve 50 (FIG. 2). reference).
- the main valve body 61 is mainly composed of a piston 62 as a base formed in a U-shaped cross-sectional view and an opening / closing portion 63. That is, the main valve body 61 is divided into two in the axial direction by the piston 62 and the opening / closing portion 63.
- the piston 62 includes a cylindrical portion 62a extending in the axial direction and a bottom portion 62b extending in the inner diameter direction from the lower end portion of the cylindrical portion 62a, and a through hole 62c penetrating in the axial direction is formed in the center of the bottom portion 62b. There is.
- a coil spring 64 as a first urging means for urging the piston 62 in the valve closing direction, that is, downward in the axial direction is arranged in a compressed state.
- a leaf spring 65 as a second urging means for urging the opening / closing portion 63 in the valve closing direction, that is, downward in the axial direction is arranged between the piston 62 and the opening / closing portion 63.
- the piston 62 is formed with a concave portion 61a which is defined by the inner peripheral surface of the cylindrical portion 62a and the upper end surface of the bottom portion 62b and is recessed in a funnel shape downward in the axial direction.
- An annular recess 62d recessed upward in the axial direction is formed at the lower end of the cylindrical portion 62a on the outer diameter side.
- the opening / closing portion 63 has an annular outer diameter side convex portion 63a protruding axially upward from the outer diameter side end portion and an annular inner diameter side convex portion 63b protruding axially upward from the radial center portion.
- An annular concave portion 63c is formed between the radial side convex portion 63a and the inner diameter side convex portion 63b.
- the inner diameter side convex portion 63b is inserted into the through hole 62c of the piston 62.
- a communication passage 63d penetrating in the axial direction is formed at the radial center of the opening / closing portion 63.
- the inside of the main valve body 61 communicates with the first flow path 11 through the communication passage 63d of the opening / closing portion 63.
- An annular recess 63e that is recessed upward in the axial direction is formed at the lower end of the opening / closing portion 63 on the outer diameter side.
- the lower end portion 63f of the opening / closing portion 63 located on the outer diameter side of the annular recess 63e is seated on the main valve seat 45a in the closed state of the main valve 60.
- the leaf spring 65 is an annular and plate-shaped spring with a stepped cross section, and has a lower spring constant than the coil spring 64. Further, the leaf spring 65 includes an annular inner diameter plate portion 65a, a plurality of connecting portions 65b bent upward from the outer diameter end of the inner diameter plate portion 65a and bridged, and downward from the outer diameter end of the connecting portion 65b. It is mainly composed of an annular outer diameter plate portion 65c which is bent and connected to the outer diameter plate portion 65c.
- the inner diameter plate portion 65a and the outer diameter plate portion 65c are substantially parallel to each other. As a result, the leaf spring 65 is deformed so that the bending angle of the connecting portion 65b becomes smaller by receiving the load in the axial direction, that is, the axial distance between the inner diameter plate portion 65a and the outer diameter plate portion 65c becomes smaller. It is possible.
- the upper end surface of the inner diameter plate portion 65a abuts on the lower end surface of the bottom portion 62b of the piston 62, and the lower end surface of the outer diameter plate portion 65c is on the outer diameter side of the opening / closing portion 63. It is arranged in contact with the upper end surface of the convex portion 63a. Further, the spring force of the leaf spring 65 is smaller than that of the coil spring 64 when the main valve 60 is closed.
- the large-diameter bottomed cylindrical portion 10d is continuous with the medium-diameter bottomed cylindrical portion 10c, the inner diameter is expanded from the medium-diameter bottomed cylindrical portion 10c, and the diameter is recessed upward in the axial direction. There is.
- the main valve seat member 45 press-fitted from below in the axial direction is integrally fixed to the large-diameter bottomed cylindrical portion 10d in a substantially sealed state.
- the main valve seat member 45 is formed of a metal material or a resin material in a cylindrical shape having a first flow path 11 penetrating in the axial direction.
- the main valve seat member 45 includes a cylindrical portion 46 extending in the axial direction and an annular flange portion 47 extending from the lower end portion of the cylindrical portion 46 to the outer diameter side. Further, in the main valve seat member 45, with the upper end of the cylindrical portion 46 inserted into the lower end of the medium-diameter bottomed cylindrical portion 10c, the flange portion 47 has a gasket from the lower axial direction to the large-diameter bottomed cylindrical portion 10d. It is press-fitted and fixed in a sealed state via.
- annular recess 48 that is recessed in a U-shape in a cross-sectional view is formed downward in the axial direction.
- a communication passage 45b is formed which penetrates in the axial direction and in which the working fluid flows from the absorber piston chamber P.
- annular land 49 is formed between the annular recess 48 and the communication passage 45b.
- a plurality of communication grooves 49a extending in the radial direction and communicating the annular recess 48 and the communication passage 45b are formed in the circumferential direction.
- the communication groove 49a allows the working fluid to be introduced into the annular recess 48 and the annular recess 63e of the opening / closing portion 63 even when the main valve 60 is in the closed state.
- the communication passage 45b, the annular recess 48, and the communication groove 49a of the main valve seat member 45 together with the lower end portion of the opening / closing portion 63 form a flow path on the upstream side of the main valve 60, that is, the first flow path 11.
- an L-shaped communication groove 10e facing downward in cross section is formed on the outer surface of the valve housing 10 from the upper end to the side surface of the cylindrical portion 10a. Specifically, the communication groove 10e extends in the outer radial direction along the upper end surface of the valve housing 10, and then extends downward in the axial direction substantially orthogonally along the outer peripheral surface of the valve housing 10.
- the lower end of the communication groove 10e extends downward from the lower end of the opening 81b when the valve housing 10 is inserted into the opening 81b of the casing 81, and the lower end of the communication groove 10e.
- the working fluid can flow into the reservoir chamber R from the above.
- the communication groove 10e constitutes the pilot downstream flow path 12 of the pilot valve 50.
- the pilot downstream flow path 12 includes a cylindrical portion 10a in the valve housing 10, a small-diameter bottomed cylindrical portion 10b, a communication groove 10e, an upper end portion on the outer diameter side of the annular convex portion 42 in the pilot valve seat member 40, and a casing. It is composed of an opening 81b in the 81 and an opening 82b in the center post 82.
- the valve housing 10 has a communication passage 10f extending from the medium-diameter bottomed cylindrical portion 10c to the outer diameter side and communicating the inside of the medium-diameter bottomed cylindrical portion 10c with the reservoir chamber R. Is formed, and the working fluid can flow into the reservoir chamber R from the communication passage 10f.
- the continuous passage 10f constitutes a flow path on the downstream side of the main valve 60, that is, a second flow path 13.
- the second flow path 13 is composed of a medium-diameter bottomed cylindrical portion 10c, a large-diameter bottomed cylindrical portion 10d, a communication passage 10f, a main valve body 61, and a main valve seat member 45 in the valve housing 10. ..
- the fluid control valve V in the non-energized state will be described.
- the pilot valve body 51 in the non-energized state, the pilot valve body 51 is pressed upward in the axial direction by the urging force of the coil spring 85.
- the sealing body 54 (see FIG. 2) of the pilot valve body 51 is separated from the pilot valve seat 40a, and the pilot valve 50 is opened.
- the pilot valve opening at this time is the maximum in this embodiment.
- the shock absorber A When the shock absorber A operates in the non-energized state and the pressure of the working fluid in the first flow path 11 increases, the working fluid passes through the communication passage 63d (see FIG. 4) of the opening / closing portion 63 and the pilot control chamber S. , Flows into the reservoir chamber R from the pilot downstream flow path 12. At the same time, as described below, the working fluid may flow into the reservoir chamber R from the second flow path 13 depending on the pressure of the working fluid.
- the fluid control valve V is formed so that the cross-sectional area of the flow path in the communication passage 63d of the opening / closing portion 63 is narrow. Therefore, even if the pressure of the working fluid in the first flow path 11 increases, the pressure of the working fluid in the pilot control chamber S does not easily increase in response to the pressure of the working fluid in the first flow path 11. Therefore, a differential pressure is generated between the pressure of the working fluid in the first flow path 11 and the pressure of the working fluid in the pilot control chamber S. The larger the differential pressure, the easier it is for the main valve 60 to be opened.
- the pressure of the working fluid in the first flow path 11 sufficient to deform only the leaf spring 65 with respect to the pressure of the working fluid in the pilot control chamber S is set to the pressure P1, the leaf spring 65, and the leaf spring 65.
- the pressure of the working fluid in the first flow path 11 sufficient to deform the coil spring 64 is defined as the pressure P2.
- the pressure P1 is lower than the pressure P2 (P1 ⁇ P2).
- the pressure of the working fluid in the first flow path 11 is described as "pressure Pin in the first flow path 11”
- the pressure of the working fluid in the pilot control chamber S is described as "pressure Ps in the pilot control chamber S”. do.
- the reason why the differential pressure ⁇ P becomes small is that the working fluid flows from the second flow path 13 into the reservoir chamber R through the main valve 60 and the pressure Pin in the first flow path 11 becomes small.
- the working fluid flows into the chamber S and the pressure Pin in the first flow path 11 becomes smaller, the volume of the pilot control chamber S becomes narrower due to the movement of the main valve body 61, and the pressure Ps in the pilot control chamber S increases.
- the opening / closing operation of the main valve 60 will be described in more detail with specific examples.
- the force of the coil spring 64 to urge the piston 62 downward is larger than the force of the leaf spring 65 urging the piston 62 upward. ing.
- the inner diameter plate portion 65a on the inner diameter side is pushed downward in the axial direction by the coil spring 64, and the outer diameter plate portion 65c on the outer diameter side is downward to the outer diameter side convex portion 63a of the opening / closing portion 63. It is abutted and supported from the ground, and is bent and deformed in the compression direction.
- the inner diameter plate portion 65a of the leaf spring 65 and the bottom surface of the annular recess 63c of the opening / closing portion 63, and the outer diameter plate portion 65c of the leaf spring 65 and the bottom surface of the recess 62d of the piston 62 are separated from each other in the axial direction to open and close. It is a movement allowance in the axial direction of the portion 63.
- the absorber piston in the shock absorber A repeatedly reciprocates with a small stroke, and the pressure Pin in the first flow path 11 is equal to or higher than the pressure P1 and the pressure P2. If it is less than (P2> Pin ⁇ P1), only the opening / closing portion 63 moves upward in the axial direction against the urging force of the leaf spring 65.
- the lower end portion 63f of the opening / closing portion 63 is slightly separated from the main valve seat 45a, and the main valve 60 is opened.
- the working fluid flows into the reservoir chamber R from the second flow path 13 through the main valve 60 (see the right half of FIG. 6).
- the valve opening degree in the main valve 60 increases as the pressure Pin in the first flow path 11 approaches the pressure P2.
- the opening / closing portion 63 moves against the urging force of the leaf spring 65, the lower end surface of the inner diameter plate portion 65a of the leaf spring 65 is pressed against the bottom surface of the annular recess 63c, and the outer diameter plate portion 65c of the leaf spring 65 is pressed.
- the upper end surface does not approach and abuts on the bottom surface of the recess 62d of the piston 62.
- the lower end portion 63f of the opening / closing portion 63 is further separated from the main valve seat 45a, and the main valve 60 is opened.
- the working fluid flows into the reservoir chamber R from the second flow path 13 through the main valve 60.
- the valve opening degree in the main valve 60 is the maximum in this embodiment (see the right half of FIG. 7).
- the fluid control valve V can open the main valve 60 in substantially two stages in response to an increase in the pressure Pin in the first flow path 11, and can relieve the working fluid to the reservoir chamber R side. ing.
- the main valve 60 has a valve characteristic that is easy to open, so that the damping force in the shock absorber A is controlled to be the minimum. There is.
- the working fluid flows from the second flow path 13 into the reservoir chamber R through the main valve 60, and as the pressure Pin in the first flow path 11 becomes smaller, the coil spring 64 expands and the valve opening becomes smaller, as described above.
- the pressure Pin in the first flow path 11 is equal to or higher than the pressure P1 and less than the pressure P2 (P2> Pin ⁇ P1), only the opening / closing portion 63 moves upward in the axial direction against the urging force of the leaf spring 65. Move (see the right half of Fig. 6).
- the rod 83 fixed to the movable iron core 84 moves downward in the axial direction together with the pilot valve body 51. Accordingly, the pilot valve 50 has a smaller pilot valve opening degree and is closed when a current of a predetermined value or more is applied.
- the working fluid in the first flow path 11 is the pilot downstream flow path due to the operation of the shock absorber A, as in the non-energized state. It flows into the reservoir chamber R from 12. Further, as described above, depending on the pressure Pin in the first flow path 11, the working fluid also flows into the reservoir chamber R from the second flow path 13.
- the damping force in the shock absorber A is the minimum. That is, it is controlled to the smallest damping force when the fluid control valve V is in the non-energized state.
- the smaller the pilot valve opening degree in the pilot valve 50 the smaller the differential pressure ⁇ P in a short time. That is, the smaller the pilot valve opening degree in the pilot valve 50, the shorter the opening time of the main valve 60.
- the fluid control characteristics in the main valve 60 are controlled according to the pilot valve opening degree in the pilot valve 50.
- the fluid control valve V can variably control the damping force in the shock absorber A.
- the fluid control valve V when the pilot valve 50 is closed in the energized state, the fluid control valve V is in a state in which the working fluid is most difficult to pass through the pilot valve 50 and the main valve 60 is in a state in which it is difficult to open. There is. Therefore, the fluid control valve V can maximize the damping force in the shock absorber A.
- the current value energized in the coil 86 constituting the solenoid 80 is set based on input parameters such as vehicle speed, vehicle acceleration / deceleration, steering angle, road surface condition, and spring load.
- pilot valve 50 in the open state may be blocked by setting a current value equal to or higher than a predetermined value.
- the leaf spring 165 of the fluid control valve of the second embodiment is a ring-shaped and plate-shaped spring having a stepped cross section, and has a spring constant lower than that of the coil spring 64.
- the leaf spring 165 has an annular inner diameter plate portion 165a, a plurality of connecting portions 165b bent downward from the outer diameter end of the inner diameter plate portion 165a and bridged, and upward from the outer diameter end of the connecting portion 165b. It is mainly composed of an annular outer diameter plate portion 165c that is bent and connected to the outer diameter plate portion 165c.
- the inner diameter plate portion 165a and the outer diameter plate portion 165c are substantially parallel to each other.
- the leaf spring 165 is deformed so that the bending angle of the connecting portion 165b becomes large, that is, the axial distance between the inner diameter plate portion 165a and the outer diameter plate portion 165c becomes large when the leaf spring 165 receives an axial load. It is possible.
- the leaf spring 165 has an outer diameter plate portion 165c installed between the coil spring 64 and the piston 62.
- the leaf spring 165 is arranged in a state where the lower end surface of the inner diameter plate portion 165a is in contact with the upper end surface of the inner diameter side convex portion 63b of the opening / closing portion 63 and is subjected to an axial load by the coil spring 64.
- the inner diameter plate portion 165a of the leaf spring 165 is the piston 62 in both the valve closed state (see the left half of FIG. 8) and the valve open state (see the left half of FIG. 8) of the main valve 60.
- the force for urging the coil spring 64 upward is smaller than the force for which the coil spring 64 urges the inner diameter plate portion 165a of the leaf spring 165 downward. That is, the spring force of the leaf spring 165 is smaller than the spring force of the coil spring 64.
- the inner diameter plate portion 165a on the inner diameter side is pushed upward in the axial direction by the upper end surface of the inner diameter side convex portion 63b of the opening / closing portion 63, and the leaf spring 165 is pushed upward in the expansion direction. It is bent and deformed (see the left half of FIG. 8). At this time, the opening / closing portion 63 and the piston 62 are separated from each other in the axial direction, which serves as an axial movement allowance for the opening / closing portion 63.
- the main valve 60 has only the opening / closing portion 63 against the urging force of the leaf spring 165. Move upward in the axial direction.
- the lower end portion 63f of the opening / closing portion 63 is slightly separated from the main valve seat 45a, and the main valve 60 is opened.
- the working fluid flows into the reservoir chamber R from the second flow path 13 through the main valve 60.
- the leaf spring 165 is bent and deformed in the expansion direction so that the opening / closing portion 63 approaches the piston 62.
- the fluid control valve V of the present embodiment resists the leaf spring 65 having a lower spring force in preference to the piston 62 and the coil spring 64 when the pressure Pin in the first flow path 11 increases. Then, the opening / closing unit 63 moves. Therefore, when the pressure in the first flow path 11 is small, as shown in FIG. 6, the opening / closing portion 63 can move without moving the piston 62 and the coil spring 64, and the fluid control has high responsiveness.
- a valve V can be provided.
- the cross-sectional area of the flow path between the convex portion 63b on the inner diameter side of the opening / closing portion 63 and the through hole 62c of the piston 62 is larger than the cross-sectional area of the flow path in the communication groove 49a of the land 49. Since it is narrowed, the responsiveness when the opening / closing portion 63 moves against the leaf spring 65 when the pressure of the first flow path 11 increases is enhanced.
- the piston 62 is slidable on the inner peripheral surface of the medium-diameter bottomed cylindrical portion 10c of the valve housing 10 when moving in the axial direction, and the movement is guided, so that the operation of the main valve body 61 is performed. Can be stabilized.
- the opening / closing portion 63 has an inner diameter side convex portion 63b slidable on the inner peripheral surface of the bottom portion 62b of the piston 62, and the opening / closing portion 63 is guided and moved relatively coaxially with the piston 62. ,
- the valve opening degree of the main valve 60 can be controlled with high accuracy.
- the opening / closing portion 63 has an outer diameter smaller than the inner diameter of the medium-diameter bottomed cylindrical portion 10c of the valve housing 10, and its outer peripheral surface is separated from the inner peripheral surface of the medium-diameter bottomed cylindrical portion 10c. Therefore, the responsiveness is improved as compared with the configuration in which the outer peripheral surface is arranged so as to be slidably contactable with the inner peripheral surface of the medium-diameter bottomed cylindrical portion 10c.
- the leaf spring 65 is applied as the second urging means, the axial dimension of the main valve 60 can be shortened as compared with the configuration in which the coil spring is applied, for example.
- the fluid control characteristics of the main valve 60 are correspondingly maintained while maintaining high responsiveness. Can be changed.
- leaf spring 65 is arranged outside the pilot control chamber S through which the working fluid passes and is not exposed to the pilot control chamber S, deterioration of the leaf spring 65 and contamination by the leaf spring 65 are prevented. You will be able to do it.
- the main valve body has been described as being divided into a piston and an opening / closing portion, but the present invention is not limited to this, and the base portion is divided into two or more portions, and the base portion and the opening / closing portion are included. It may be divided into three or more.
- a rigid base is divided into two in the axial direction, and a third urging means different from the spring force of the first urging means and the second urging means is provided between the upper base and the lower base.
- the main valve may be opened in substantially three stages.
- valve seat has been described as being formed on a valve seat member separate from the valve housing, the present invention is not limited to this, and the valve seat may be integrally formed with the valve housing.
- the base portion has been described by taking a piston that slides on the inner peripheral surface of the valve housing as an example, but the present invention is not limited to this, and the base portion may be movable in the axial direction apart from the inner peripheral surface of the valve housing. That is, the base may have a configuration other than the piston.
- the opening / closing part has been described as sliding on the inner surface of the bottom of the piston, the present invention is not limited to this, and the opening / closing part is provided with a means for separately guiding the movement such as sliding on the inner peripheral surface of the valve housing. If so, it does not have to be slidably provided at the base.
- the second urging means has been described as having a leaf spring, the present invention is not limited to this, and a coil spring, a disc spring, or the like may be appropriately changed.
- Valve housing 11 1st flow path 12 Pilot downstream flow path 13 2nd flow path 40a Pilot valve seat 45a Main valve seat (valve seat) 50 Pilot valve 51 Pilot valve body 60 Main valve 61 Main valve body (valve body) 62 Piston (base) 63 Opening and closing part 63d Communication passage 64 Coil spring (first urging means) 65 Leaf spring (second urging means) 80 Solenoid A Shock absorber P Absorber piston chamber R Reservoir chamber S Pilot control chamber V Fluid control valve
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Fluid-Driven Valves (AREA)
- Magnetically Actuated Valves (AREA)
- Multiple-Way Valves (AREA)
- Fluid-Damping Devices (AREA)
Abstract
Description
弁座と、
前記弁座に対して離接する弁体と、
前記弁体を閉弁方向に付勢する第1付勢手段および当該第1付勢手段よりバネ力の低い第2付勢手段と、を備え、第1流路における作動流体の圧力に応じて該作動流体を第2流路へ放出可能な流体制御弁であって、
前記弁体は、前記第1付勢手段によって付勢される基部と、前記弁座に対して離接する開閉部と、が軸方向に分割されて配設されており、前記第2付勢手段が前記基部と前記開閉部とを軸方向に離間可能に配設されている。
これによれば、第1流路における作動流体の圧力が高まった際に、基部および第1付勢手段よりも優先してバネ力の低い第2付勢手段に抗して開閉部が移動する。そのため、第1流路における作動流体の圧力が小である場合、基部や第1付勢手段の移動を伴うことなく開閉部の移動が可能となり、応答性の高い流体制御弁を提供できる。また、第1流路における作動流体の圧力が大である場合、第2付勢手段に抗して開閉部が移動している状態からさらに第2付勢手段および開閉部により基部が押圧され、第1付勢手段に抗して基部、第2付勢手段および開閉部が移動するので、応答性の高い流体制御弁を提供できる。
これによれば、バルブハウジングによって基部が案内されるため、弁体の動作を安定させることができる。
これによれば、開閉部が基部に相対的に同軸で案内されて移動するため、弁開度を精度良く制御できる。
これによれば、パイロット制御室を流れる作動流体の流量を変化させてパイロット制御室における作動流体の圧力を変化させることが可能となるため、これ応じて、高い応答性を維持したまま流体制御特性を変化させることができる。
これによれば、第2付勢手段が、作動流体が通過するパイロット制御室に露出しないため、第2付勢手段の劣化や第2付勢手段によるコンタミの噛み込みを防止できることになる。
11 第1流路
12 パイロット下流流路
13 第2流路
40a パイロット弁座
45a 主弁座(弁座)
50 パイロット弁
51 パイロット弁体
60 主弁
61 主弁体(弁体)
62 ピストン(基部)
63 開閉部
63d 連通路
64 コイルスプリング(第1付勢手段)
65 板バネ(第2付勢手段)
80 ソレノイド
A ショックアブソーバ
P アブソーバピストン室
R リザーバ室
S パイロット制御室
V 流体制御弁
Claims (5)
- 弁座と、
前記弁座に対して離接する弁体と、
前記弁体を閉弁方向に付勢する第1付勢手段および当該第1付勢手段よりバネ力の低い第2付勢手段と、を備え、第1流路における作動流体の圧力に応じて該作動流体を第2流路へ放出可能な流体制御弁であって、
前記弁体は、前記第1付勢手段によって付勢される基部と、前記弁座に対して離接する開閉部と、が軸方向に分割されて配設されており、前記第2付勢手段が前記基部と前記開閉部とを軸方向に離間可能に配設されている流体制御弁。 - 前記基部は、該基部が内装されるバルブハウジングに対して軸方向に摺動可能である請求項1に記載の流体制御弁。
- 前記開閉部は、前記基部に対して軸方向に摺動可能である請求項2に記載の流体制御弁。
- 前記基部および前記第1付勢手段が内装されるバルブハウジング内の空間をパイロット制御室とし、前記開閉部には、前記第1流路と前記パイロット制御室とを連通する連通路を有している請求項1ないし3のいずれかに記載の流体制御弁。
- 前記第2付勢手段は、前記基部と前記開閉部との間、かつ前記パイロット制御室の外側に配設されている請求項4に記載の流体制御弁。
Priority Applications (5)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| EP25166558.4A EP4553358A3 (en) | 2020-10-01 | 2021-09-24 | Fluid control valve |
| CN202180066798.8A CN116324245A (zh) | 2020-10-01 | 2021-09-24 | 流体控制阀 |
| EP21875394.5A EP4224047A4 (en) | 2020-10-01 | 2021-09-24 | FLUID CONTROL VALVE |
| JP2022553885A JP7631361B2 (ja) | 2020-10-01 | 2021-09-24 | 流体制御弁 |
| US18/029,063 US12276346B2 (en) | 2020-10-01 | 2021-09-24 | Fluid control valve |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2020166935 | 2020-10-01 | ||
| JP2020-166935 | 2020-10-01 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2022071092A1 true WO2022071092A1 (ja) | 2022-04-07 |
Family
ID=80950464
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/JP2021/034995 Ceased WO2022071092A1 (ja) | 2020-10-01 | 2021-09-24 | 流体制御弁 |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US12276346B2 (ja) |
| EP (2) | EP4224047A4 (ja) |
| JP (1) | JP7631361B2 (ja) |
| CN (1) | CN116324245A (ja) |
| WO (1) | WO2022071092A1 (ja) |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2024235493A1 (de) * | 2023-05-15 | 2024-11-21 | Kendrion (Villingen) Gmbh | Druckregelventil zum steuern oder regeln eines drucks eines fluids in einem pilotdruckraum und schwingungsdämpfer mit einem solchen druckregelventil |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2025124140A1 (zh) * | 2023-12-12 | 2025-06-19 | 比亚迪股份有限公司 | 用于减振器的调节模块、减振器和车辆 |
| DE102023136648A1 (de) * | 2023-12-22 | 2025-06-26 | Solero Technologies Villingen GmbH | Druckregelventil zum Steuern oder Regeln eines Drucks eines Fluids in einem Pilotdruckraum und Schwingungsdämpfer mit einem solchen Druckregelventil |
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- 2021-09-24 EP EP21875394.5A patent/EP4224047A4/en active Pending
- 2021-09-24 CN CN202180066798.8A patent/CN116324245A/zh active Pending
- 2021-09-24 US US18/029,063 patent/US12276346B2/en active Active
- 2021-09-24 JP JP2022553885A patent/JP7631361B2/ja active Active
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Also Published As
| Publication number | Publication date |
|---|---|
| EP4553358A3 (en) | 2025-07-02 |
| JP7631361B2 (ja) | 2025-02-18 |
| US12276346B2 (en) | 2025-04-15 |
| EP4224047A4 (en) | 2024-10-23 |
| EP4224047A1 (en) | 2023-08-09 |
| EP4553358A2 (en) | 2025-05-14 |
| JPWO2022071092A1 (ja) | 2022-04-07 |
| US20230375098A1 (en) | 2023-11-23 |
| CN116324245A (zh) | 2023-06-23 |
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