WO2022024728A1 - 流量制御弁 - Google Patents
流量制御弁 Download PDFInfo
- Publication number
- WO2022024728A1 WO2022024728A1 PCT/JP2021/026056 JP2021026056W WO2022024728A1 WO 2022024728 A1 WO2022024728 A1 WO 2022024728A1 JP 2021026056 W JP2021026056 W JP 2021026056W WO 2022024728 A1 WO2022024728 A1 WO 2022024728A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- scale
- handle
- axis
- cam
- control valve
- Prior art date
Links
- 230000005540 biological transmission Effects 0.000 claims abstract description 7
- 239000012530 fluid Substances 0.000 claims description 20
- 230000000903 blocking effect Effects 0.000 claims description 2
- 125000006850 spacer group Chemical group 0.000 description 34
- 230000002093 peripheral effect Effects 0.000 description 21
- 210000000078 claw Anatomy 0.000 description 10
- 230000000149 penetrating effect Effects 0.000 description 7
- 229920005989 resin Polymers 0.000 description 7
- 239000011347 resin Substances 0.000 description 7
- 229920003002 synthetic resin Polymers 0.000 description 6
- 239000000057 synthetic resin Substances 0.000 description 6
- 229920006324 polyoxymethylene Polymers 0.000 description 4
- 229920001707 polybutylene terephthalate Polymers 0.000 description 3
- 229930182556 Polyacetal Natural products 0.000 description 2
- 239000004734 Polyphenylene sulfide Substances 0.000 description 2
- 230000001154 acute effect Effects 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 229920000069 polyphenylene sulfide Polymers 0.000 description 2
- 229910001369 Brass Inorganic materials 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 239000010951 brass Substances 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- -1 polybutylene terephthalate Polymers 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
Images
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
- F16K31/00—Actuating devices; Operating means; Releasing devices
- F16K31/44—Mechanical actuating means
- F16K31/50—Mechanical actuating means with screw-spindle or internally threaded actuating means
-
- 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
- F16K31/44—Mechanical actuating means
- F16K31/60—Handles
- F16K31/602—Pivoting levers, e.g. single-sided
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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
- F16K37/00—Special means in or on valves or other cut-off apparatus for indicating or recording operation thereof, or for enabling an alarm to be given
- F16K37/0008—Mechanical means
- F16K37/0016—Mechanical means having a graduated scale
Definitions
- the present invention is particularly in a flow rate control valve that controls the flow rate of the fluid flowing through the flow path by adjusting the opening degree of the flow path formed in the valve body with a needle valve linked to the rotation operation of the handle. ,
- the amount of rotation operation of the handle that is, the one capable of displaying the opening degree of the flow path by the needle valve.
- the flow rate control valve is a small device that limits the flow of fluid and controls the speed of the actuator, and is used in, for example, an automated equipment line for assembling mechanical devices and electronic devices.
- the flow control valve includes a needle valve for adjusting the opening degree of the flow path, a rotary handle interlocking with the needle valve, and the opening degree of the flow path by the needle valve, that is, the said.
- Some have a display unit that displays the amount of rotation operation of the handle.
- the flow control valve described in Patent Document 1 includes a hanging that extends in the axial direction and is formed in a cylindrical shape, a cylindrical housing attached to one end (upper side) of the housing in the axial direction, and a housing. It has an eclipse-cylindrical handle provided rotatably around an axis on the upper side of the body. Inside the housing, a needle valve is provided so as to be movable in the axial direction and rotatable around the axis. The upper part of the needle valve is arranged in the housing and inserted into the shaft portion extending in the axial direction, and the needle valve and the shaft portion are mutually fixed around the shaft and mutually in the axial direction. It is movably fitted to.
- a hole extending downward in the axial direction is provided in the central portion of the handle, and the shaft portion extending from the upper part of the housing is mutually fixed around the axis with respect to the hole portion. It has been inserted. That is, when the handle is rotated, the shaft portion and the needle valve can be rotated integrally.
- a cylindrical needle guide arranged below the shaft portion is provided in the housing, and a female screw provided on the inner surface of the needle guide is screwed with a male screw provided on the outer periphery of the needle valve. .. Therefore, when the handle is rotated, the needle valve moves in the axial direction while rotating with respect to the needle guide. By moving the needle valve in the axial direction, the opening degree of the flow path provided in the housing is adjusted, and the flow rate of the fluid flowing through the flow path can be controlled.
- an annular display ring is provided at a position deviated outward in the radial direction of the shaft portion on the upper side of the housing, and the central axis of the display ring is the shaft. It extends parallel to the central axis of rotation of the part.
- a hole portion penetrating in the axial direction is provided, and on the inner surface of the display ring forming the hole portion, internal tooth portions are recessed at equal intervals in the circumferential direction.
- the shaft portion is inserted into the hole portion of the display ring, and a tooth portion capable of meshing with the internal tooth portion is provided on the side surface of the shaft portion, and the inner diameter of the hole portion of the display ring is provided. Is formed larger than the outer shape of the shaft portion, and the shaft portion is arranged at a position close to one side in the radial direction of the hole portion of the display ring. Then, when this shaft portion makes one rotation, the toothed portion sends out one internal tooth portion in the circumferential direction to rotate the display ring at a predetermined rotation angle.
- the outer peripheral surface of the display ring is provided with a scale indicating the opening degree (rotation operation amount of the handle) of the fluid flow path by the needle valve, and the housing facing the outer peripheral surface of the display ring is provided with a scale.
- a display window that allows the scale to be visually recognized is open.
- the central axis of the display ring is provided at a position deviated outward in the radial direction of the shaft portion coaxially arranged with the handle and the needle valve.
- the housing for accommodating this display ring must also be formed so as to bulge outward in the radial direction of the shaft portion, and structurally, the size of the housing and the size of the entire flow control valve are avoided. Can't.
- users are desired to reduce the size of such a flow rate control valve as the space is saved.
- a technical object of the present invention is to provide a flow control valve capable of displaying the rotation operation amount of the handle, that is, the opening degree of the flow path by the needle valve, which can be further miniaturized.
- the flow control valve according to the present invention is provided on the body extending in the axial direction, the flow path formed in the body, and the body on one side in the axial direction.
- a flow rate control valve having a needle valve for adjusting the opening degree and capable of controlling the flow rate of the fluid flowing through the flow path according to the rotation operation amount of the handle, the flow rate control valve is ,
- a scale body that is rotatably supported around the axis and has a scale indicating the amount of rotation operation of the handle, and the handle and the axis that are always integrally rotated around the axis to correspond to the amount of rotation operation of the handle.
- the scale indicating unit indicating the scale and the scale indicated by the scale indicating unit each time the handle is rotated by a predetermined angle by transmitting the rotation of the handle to the scale body or blocking the transmission.
- the clutch mechanism transmits the rotation of the handle to the scale body by engaging with each other, and the scale indicator and the scale body. And the engaged portion and the engaged portion that are integrally rotated around the axis, and the engaged portion and the engaged portion are disengaged each time the handle is rotated by a predetermined angle.
- the rotation of the handle allows the scale indicator to rotate about the axis with respect to the scale, and the rotation of the scale indicator with respect to the scale allows the scale indicator to rotate, and the scale indicator points to the scale. It is characterized by having a clutch drive mechanism for re-engaging the engaged portion and the engaged portion after the scale is switched.
- the clutch drive mechanism is arranged so as to face the cam surface that is fixedly provided to the body and extends annularly around the axis and rotates the handle.
- the cam surface has a cam copying protrusion that rotates around the axis and slides on the cam surface, and the cam surface has a cam protrusion that protrudes to one side in the axial direction and a cam protrusion. It has a cam flat portion extending in a plane from the bottom portion of the cam to one side in the axial direction, and the cam copying protrusion portion and the engaged portion are always integrally rotatable and always integrally the shaft.
- the engaging portion is movably supported in a direction, the engaging portion is fixedly supported with respect to the body, and the clutch drive mechanism causes the cam copying protrusion to move the cam each time the handle is rotated by a predetermined angle.
- the clutch drive mechanism By sliding on the protrusion and moving the engaged portion to one side in the axial direction with respect to the engaged portion, the engagement between the engaged portion and the engaged portion is released.
- the rotation of the handle allows the scale indicator to rotate about the axis with respect to the scale.
- the clutch drive mechanism has a spring portion that constantly urges the cam copying protrusion portion and the engaged portion toward the other side in the axial direction opposite to the one side in the axial direction.
- the cam copying protrusion is moved to the other side in the axial direction by the urging of the spring portion to be brought into contact with the cam flat surface portion.
- the engaged portion is re-engaged with the engaged portion.
- the flow rate control valve has a resistance generating surface that is fixedly provided to the body and extends in an annular shape around the axis, and the scale body slides on the resistance generating surface.
- the contact portion has a contact portion that can be in contact with the contact portion, and the contact portion hits the resistance generation surface in a state where the engagement between the engaged portion and the engagement portion is disengaged.
- the resistance force generated in contact with the scale prevents the scale from rotating with the rotation of the handle.
- the abutting portion has an engaging projection projecting outward in the radial direction, and the engaging projection is recessed toward the outward in the radial direction on the resistance generating surface.
- a plurality of movable recesses are provided, and the plurality of recesses are provided on the resistance generating surface at equal intervals around the axis.
- the scale indicating portion is a scale indicating opening opened in the handle, and the scale attached to the scale body is visible from the outside through the scale indicating opening.
- a flow control valve capable of displaying the amount of rotation operation of the handle, that is, the opening degree of the flow path by the needle valve, which can be further miniaturized.
- FIG. 6 is a cross-sectional view taken along the line IV-IV of the flow control valve shown in FIG. It is an exploded perspective view of the flow rate control mechanism in the flow rate control valve shown in FIG. It is a side view of the needle valve shown in FIG. It is a perspective view of the needle guide shown in FIG.
- FIG. 5 is a perspective view of the shaft portion shown in FIG. There is a front view of the coaxial part. It is a side view of the scale shown in FIG. It is a front view of the same scale body.
- FIG. 11 is a cross-sectional view taken along the line XII-XII in FIG.
- FIG. 4 is a cross-sectional perspective view taken along the line XIII-XIII in FIG. It is a side view of the spacer shown in FIG.
- FIG. 5 is a cross-sectional perspective view of the XV-XV in FIG. 5 of the spacer. It is a perspective view of the needle valve holder shown in FIG. It is a front view of the handle shown in FIG.
- FIG. 17 is a cross-sectional view taken along the line XVIII-XVIII in FIG. It is explanatory drawing for demonstrating the operation of the clutch mechanism and the cam mechanism part shown in FIG. 5, and shows the state in which the rotation of a handle is locked.
- the flow rate control valve according to the embodiment of the present invention will be described below.
- the fluid is compressed air
- the flow rate control valve is used by directly attaching to the fluid pressure cylinder, and the operating speed of the fluid pressure cylinder is controlled by limiting the exhaust flow rate from the fluid pressure cylinder.
- a meter-out control type speed controller will be described as an example.
- the present invention can also be applied to a meter-in control type speed controller that controls the operating speed of the fluid pressure cylinder by, for example, limiting the supply flow rate of the compressed air supplied to the fluid pressure cylinder.
- this flow rate control valve is not exclusively used for a fluid pressure cylinder, and of course, it can also be used for various other fluid pressure devices.
- the flow control valve 10 has a substantially cylindrical first body 12 (body) extending along the first axis L1 and the first body 12.
- a second body 13 having a substantially cylindrical shape, which is connected so as to extend along a second axis L2 orthogonal to the first axis L1, is provided. That is, the first axis L1 and the second axis L2 are in a twisted position relationship with each other.
- the inside of the first body 12 is hollow, and one end of the first body 12 in the first axis L1 direction (hereinafter referred to as “axis L1 direction”) (hereinafter referred to as “tip in the axis L1 direction"). ), A first port 14 for connecting a pipe from a pressure source such as a compressor (not shown) is provided. Further, at one end (hereinafter referred to as “axis L2 direction tip") of the second body 13 in the second axis L2 direction (hereinafter referred to as "axis L2 direction”), for example, a double acting fluid pressure cylinder is used. A second port 15 for connecting to the air supply / exhaust port is opened, and a fluid flow path 16 for communicating the first port 14 and the second port 15 is formed inside the first body 12 and the second body 13. ing.
- the first body 12 has a valve accommodating portion 12a formed on the other end of the first body 12 in the axis L1 direction (hereinafter referred to as “the base end in the axis L1 direction”) and the tip end side in the axis L1 direction. It has a formed port forming portion 12b. A first port 14 is opened at the tip of the port forming portion 12b in the axis L1 direction, and a simple connection type pipe joint 17 is attached to the first port 14.
- the plurality of locking pieces 17a bite into the outer periphery of the pipe and lock the pipe to prevent the pipe from coming off, and the release bush 17b Is pushed into the inside of the pipe joint 17, and the tip of the release bush 17b spreads the locking piece 17a outward and separates it from the pipe, so that the pipe can be pulled out.
- the hollow portion inside the valve accommodating portion 12a has a cylindrical check valve holder 20 from the tip end side in the axis L1 direction toward the proximal end side in the axis L1 direction, and an inner diameter portion and an outer diameter portion different in a plurality of stages.
- a cylindrical needle valve holder 21 is provided coaxially.
- a part of the fluid flow path 16 is branched into a first flow path 16a and a second flow path 16b (flow path) in parallel with each other by the check valve holder 20.
- a sealing member 23 that airtightly seals between the needle valve holder 21 and the inner peripheral surface of the valve accommodating portion 12a is mounted on the outer periphery of the needle valve holder 21 near the tip in the axis L1 direction.
- the check valve holder 20 and the needle valve holder 21 are each integrally molded of synthetic resin.
- the first flow path 16a is an annular flow path formed between the outer circumference of the check valve holder 20 and the inner circumference of the first body 12, and the second flow path 16b is the check valve holder. It is a flow path passing through the central hole 22 of 20.
- the first flow path 16a and the second flow path 16b communicate with the communication flow path 19 in the second body 13 through the internal flow path 16c between the check valve holder 20 and the needle valve holder 21.
- An annular check valve 25 is provided in the first flow path 16a to limit the direction of the flow of the compressed fluid flowing through the first flow path 16a to only one direction.
- the check valve 25 is airtightly mounted in an annular recess 20a formed on the outer periphery of the check valve holder 20, and the radial outside of the check valve 25 is deformed by the action of compressed air, and the first check valve 25 is described.
- the first flow path 16a is opened and closed by contacting and separating from the surface of the annular seat portion 26 protruding from the inner circumference of the body 12 inward in the radial direction toward the proximal end side in the axis L1 direction.
- the check valve 25 since the check valve 25 extends outward in the radial direction, the check is performed against the forward flow of compressed air from the first port 14 to the second port 15.
- the valve 25 is separated from the seat portion 26 to open the first flow path 16a, thereby allowing this forward flow.
- the check valve 25 With respect to the reverse flow of compressed air from the second port 15 to the first port 14, the check valve 25 abuts on the seat portion 26 and airtightly closes the first flow path 16a. , Block this reverse flow.
- a valve hole 21a penetrating in the shaft L1 direction is formed inside the needle valve holder 21, and a needle valve 27 is airtightly and in the shaft L1 direction in the valve hole 21a via the valve seal 28. It is fitted so that it can move forward and backward along it. Then, by advancing and retreating the needle valve 27, the throttle portion 27a formed at the tip end portion of the needle valve 27 can be inserted and removed from the throttle hole 29 of the center hole 22 of the check valve holder 20. That is, when the throttle portion 27a advances and retreats with respect to the throttle hole 29 in the axis L1 direction, the distance between the throttle portion 27a and the throttle hole 29 (that is, the flow path cross-sectional area) changes, and the said. The flow rate of the compressed air flowing through the second flow path 16b is controlled.
- a male screw 30 is formed on the outer periphery of the portion of the needle valve 27 closer to the base end in the axis L1 direction than the throttle portion 27a, and the male screw 30 is the needle valve. It is screwed into the female screw 31a of the needle guide 31 fixed inside the holder 21.
- a cap-shaped handle 32 for rotation operation is connected to the base end side of the needle valve 27 in the axis L1 direction via a cylindrical shaft portion 40.
- the needle valve 27 is inserted into the shaft portion 40 in a state of being mutually fixed in the rotation direction (around the first shaft L1) and movable in the shaft L1 direction.
- the handle 32 is inserted into the shaft portion 40 in a state of being mutually fixed around the shaft L1 and movable in the shaft L1 direction with respect to the shaft portion 40 at the base end side end portion in the shaft L1 direction. Therefore, when the handle 32 is rotated in the forward and reverse directions, the needle valve 27 rotates in the forward and reverse directions and is guided by the needle guide 31 to move forward and backward in the shaft L1 direction. Therefore, the needle valve 27 can move forward and backward in accordance with the rotation operation of the handle 32 to adjust the opening degree of the second flow path 16b.
- the rotation operation amount of the handle 32 that is, the opening degree of the second flow path 16b by the needle valve 27 is displayed by numbers or symbols so that it can be visually confirmed. You can do it. Therefore, the flow control valve 10 is always integrally integrated with the scale body 70, which is rotatably supported around the shaft L1 and has a scale 72b indicating the rotational operation amount of the handle 32, and the handle 32 and the shaft L1.
- the scale indicating unit 34 that rotates and points to the scale 72b corresponding to the rotation operation amount of the handle 32, and the rotation of the handle 32 is transmitted to or blocked from the scale body 70.
- the clutch mechanism 47 for switching the scale 72b of the scale body 70 pointed to by the scale indicating unit 34 is provided.
- the main configurations related to this display mechanism are, that is, the needle valve 27, the needle guide 31, the spacer 50, the bush 60, the scale body 70, and the shaft.
- the portion 40, the coil spring 62, the spring seat 64, and the handle 32 are arranged coaxially on the shaft L1 in the valve accommodating portion 12a and on the proximal end side in the axis L1 direction with respect to the valve accommodating portion 12a.
- the needle valve 27 is formed in a columnar shape extending in the axis L1 direction, and is formed on the throttle portion 27a at the tip portion and the needle formed on the proximal end side in the shaft L1 direction with respect to the throttle portion 27a. It has a main body portion 27b.
- the needle valve 27 is made of a synthetic resin such as PBT resin, for example.
- the needle body portion 27b has a larger diameter than the throttle portion 27a, and a pair of flat notched surfaces 27c and 27c are provided on both sides in the radial direction sandwiching the central axis J (that is, the axis L1). It is formed facing each other.
- the needle body portion 27b having these notched surfaces 27c was inserted into the shaft portion 40, and as described above, the needle valves 27 were mutually fixed around the shaft L1 with respect to the shaft portion 40. It is in a state. Further, the male screw 30 is formed on the outer peripheral surface of the needle body portion 27b excluding the notched surface 27c.
- the needle guide 31 is formed in a cylindrical shape and is provided on the tip side in the L1 direction of the shaft with respect to the shaft portion 40.
- a through hole 31b penetrating in the shaft L1 direction is provided inside the needle guide 31, and a female screw 30 of the needle valve 27 is screwed into a portion of the inner peripheral surface thereof near the tip in the shaft L1 direction.
- a screw 31a is formed. Therefore, when the needle valve 27 is rotated around the shaft L1 by the rotation operation of the handle 32, the needle valve 27 can be moved in the shaft L1 direction with respect to the needle guide 31 accordingly.
- the needle guide 31 is made of, for example, a metal, preferably an alloy (eg, brass).
- annular cam surface 46 forming a part of the cam mechanism portion 45 is formed on the end surface of the needle guide 31 facing the base end side in the axis L1 direction, and the needle valve is operated by rotating the handle 32.
- the cam surface 46 has a cam protrusion 46a projecting toward the proximal end side in the axis L1 direction, and a cam flat surface portion 46b extending from the bottom of the cam protrusion 46a along the circumferential direction of the needle guide 31.
- the cam protrusions 46a are formed in pairs on the end faces of the needle guide 31, and these are provided at intervals of 180 degrees in the circumferential direction about the central axis J (that is, the axis L1). Both of the cam protrusions 46a and 46a are formed in a smooth triangular shape protruding toward the base end side in the axis L1 direction in the side view, and have the same shape and dimensions as each other. In the present embodiment, the circumferential length of the cam protrusion 46a is formed to be about 1/4 of the circumferential length of the end face of the needle guide 31.
- the cam flat surface portion 46b is formed by a portion of the end surface of the needle guide 31 on the base end side in the axis L1 direction, excluding the pair of cam protrusions 46a, 46a, and is orthogonal to the axis L1 direction. It is formed by an arcuate plane.
- a plurality of locking projections 33 projecting outward in the radial direction are formed at equal intervals in the circumferential direction on the outer peripheral surface of the tip end portion of the needle guide 31 in the axis L1 direction. These locking protrusions 33 are pressed against the inner wall of the valve hole 21a of the needle valve holder 21 when the needle guide 31 is fitted into a predetermined position in the valve hole 21a of the needle valve holder 21. This is to prevent the needle guide 31 from rotating with respect to the needle valve holder 21 and from being pulled out from the valve hole 21a.
- the shaft portion 40 is formed in a cylindrical shape extending in the axis L1 direction, and has a first shaft portion 41 on the tip end side in the shaft L1 direction and the first shaft portion 41. It has a second shaft portion 42 on the base end side in the L1 direction of the shaft.
- the shaft portion 40 is formed of, for example, a synthetic resin, preferably a polyphenylene sulfide resin (PPS resin).
- PPS resin polyphenylene sulfide resin
- the shaft portion 40 is formed with a through hole 43 penetrating along the central axis J (that is, the shaft L1).
- the through hole 43 is formed by a pair of flat surface portions 43a facing each other with the central axis J interposed therebetween and a pair of curved portions 43b formed of an arc centered on the central axis J.
- the through hole 43 has a cross-sectional shape similar to the cross-sectional shape of the needle main body portion 27b of the needle valve 27, and is formed to be slightly larger than the cross-sectional area of the needle main body portion 27b.
- the shaft portion 40 is fixed to the needle valve 27 and around the shaft L1 and rotates integrally, while the needle valve 27 is movably supported in the shaft L1 direction.
- An annular urging flange portion 41a projecting outward in the radial direction is formed at the end portion of the first shaft portion 41 on the base end side in the axis L1 direction.
- a plurality of tooth pieces 47a'protruding toward the tip side in the axis L1 direction are formed on the end surface of the urging flange portion 41a on the tip end side in the axis L1 direction at equal intervals in the circumferential direction. It constitutes 47a (engagement portion).
- the meshed portion 47a engages with a gear portion 47b (see FIG. 11, engaged portion) provided on the scale 70, which will be described later.
- the meshing portion 47a and the gear portion 47b form a part of the clutch mechanism 47, which will be described later.
- a cam copying protrusion 41b is projected from the end surface of the first shaft portion 41 located on the tip side in the axis L1 direction toward the tip side in the shaft L1 direction.
- the cam copying protrusion 41b is formed in a triangular shape in a side view, and is linearly linear in the radial direction from the outer peripheral end toward the central axis J at one position in the circumferential direction on the end surface of the first shaft portion 41. It is projected so as to extend.
- the tip of the cam copying protrusion 41b is arranged to face the cam surface 46 and is slidably in contact with the cam surface 46.
- the cam copying protrusion 41b constitutes a cam mechanism portion 45 together with the cam surface 46. That is, the cam mechanism portion 45 slides on the annular cam surface 46 while the cam copying protrusion 41b rotates with the rotation of the shaft portion 40 due to the rotation operation of the handle 32. Has a function of reciprocating in the axis L1 direction.
- the engaging protrusion 32a (see FIG. 4) of the handle 32 is fitted into the through hole 43 in the second shaft portion 42, and the shaft portion 40 is formed around the handle 32 and the shaft L1 as described above. While they are fixed to each other and rotate integrally, they are movable in the axis L1 direction with respect to the handle 32. Further, as shown in FIG. 4, a coil spring 62 (spring portion) made of a compression spring is mounted on the radial outer side of the second shaft portion 42.
- the end portion on the tip end side in the shaft L1 direction abuts on the end surface on the proximal end side in the shaft L1 direction in the urging flange portion 41a of the shaft portion 40, while the end portion on the proximal end side in the shaft L1 direction abuts.
- the shaft portion 40 is always urged toward the tip end side in the axis L1 direction by abutting against the spring seat 64 mounted on the scale body 70.
- the spring seat 64 is formed in an annular shape, and is mounted on the spring seat holder 75 of the scale body 70 with the engaging protrusion 32a of the handle 32 inserted therein.
- the coil spring 62 urges the scale body 70 toward the base end side in the axis L1 direction via the spring seat 64 and the spring seat receiver 75, and the end end of the scale body 70 in the axis L1 direction is the top plate of the handle 32. It is in contact with the inner surface of the portion 32b.
- the clutch drive mechanism 48 is configured by the shaft portion 40, the needle guide 31, the cam mechanism portion 45 provided between the shaft portion 40 and the needle guide 31, and the coil spring 62 described above.
- the clutch mechanism 47 is composed of the clutch drive mechanism 48, the meshed portion (engaged portion) 47a, and the gear portion (engaged portion) 47b.
- the scale 70 is formed in a cylindrical shape extending along the axis L1 direction, and surrounds a portion of the shaft portion 40 on the base end side in the axis L1 direction. It is arranged so as to be rotatable around the shaft L1 and movable in the shaft L1 direction with respect to the shaft portion 40.
- the scale 70 is formed of, for example, a synthetic resin, preferably polyacetal (POM).
- the scale body 70 has a ring main body portion 71 formed in a cylindrical shape, and the end portion of the ring main body portion 71 on the axial L1 direction proximal end side protrudes outward in the radial direction and is annular in the circumferential direction.
- a flange-shaped scale plate 72 extending to the surface is formed.
- An annular flat surface portion 72a extending in the circumferential direction is formed on the end surface of the scale board 72 on the base end side in the axis L1 direction, and the rotation operation amount (for example, the number of rotations) of the handle 32 is represented on the flat surface portion 72a.
- a scale 72b is attached.
- the scale 72b is a number 1, 2, 3 ... Representing the number of rotations of the handle 32 (that is, the number of times the handle 32 is rotated 360 degrees) and a symbol of ⁇ .
- This circle symbol is attached to the center position between the numbers adjacent to each other in the circumferential direction, and represents a half rotation of the handle 32 (that is, a state in which the handle 32 is rotated 180 degrees from the position of each rotation speed).
- the ⁇ symbol between 0 and 1 represents 0.5
- the ⁇ symbol between 1 and 2 represents 1.5
- the symbol represents 2.5
- the circled symbol between 3 and 4 represents 3.5. Therefore, instead of these symbols ⁇ , numbers 0.5, 1.5, 2.5, and 3.5 may be used.
- the scale 72b corresponding to the actual rotation operation amount of the handle is pointed by the scale indicating portion 34 provided on the handle 32.
- a flange portion 73 is formed in the middle portion in the axis L1 direction of the ring main body portion 71 so as to project outward in the radial direction and extend in an annular shape in the circumferential direction.
- the outer diameter of the flange portion 73 is formed to be smaller than the outer diameter of the scale plate 72.
- the scale body 70 is restricted from moving in the radial direction by the outer periphery of the flange portion 73 slidably contacting the inner surface of the locking claw portion 51 of the spacer 50.
- a locking protrusion 51a is projected inward from the tip of the locking claw portion 51, and the scale body 70 is inserted into the space between the scale plate 72 and the flange portion 73.
- the locking protrusion 51a regulates the range of movement toward the tip end side in the axis L1 direction.
- a ring hole portion 74 penetrating in the shaft L1 direction is provided inside the ring body portion 71, and is provided on the inner surface of the ring hole portion 74 near the tip in the shaft L1 direction. Is provided with a gear piece 47b'protruding inward in the radial direction.
- gear portions 47b (engaged portions) composed of a pair of gear pieces 47b'and 47b'arranged at predetermined intervals in the circumferential direction are arranged in the circumferential direction at equal intervals larger than the predetermined intervals. It is arranged in three places.
- gear portions 47b are arranged on the tip side in the shaft L1 direction with respect to the meshing portion 47a of the shaft portion 40, and are engaged with the meshing portion 47a by the reciprocating movement of the shaft portion 40 in the shaft L1 direction. It is possible to switch between the engaged state and the disengaged state in which the meshed tooth portion 47a is disengaged. Then, as described above, the gear portion 47b constitutes a part of the clutch mechanism 47 together with the meshing portion 47a provided on the shaft portion 40, and the meshing portion is accompanied by the rotation operation of the handle 32. By engaging and disengaging with 47a, the rotation of the shaft portion 40 can be transmitted to the scale body 70, and the transmission of the rotation of the shaft portion 40 to the scale body 70 can be blocked.
- the scale body 70 is integrally provided with a plate-shaped arm portion 76 extending from the flange portion 73 of the ring main body portion 71 toward the tip end side in the axis L1 direction.
- a locking projection 76a is projected outward on the outer surface of the tip of the arm 76 facing outward in the radial direction.
- three arm portions 76 are provided at equal intervals in the circumferential direction of the flange portion 73.
- the tip side of the arm portion 76 is elastically deformable in the radial direction with the base end portion integrally connected to the flange portion 73 as a fulcrum, and the hemispherically formed locking protrusion 76a is the first. It is slidably abutted on the inner peripheral surface 52a (resistance generation surface) of the spacer 50 which is fixedly provided to the body 12. That is, the scale body 70 is supported by the spacer in a state where the locking protrusion 76a of the arm portion 76 is slidably contacted with the spacer 50.
- reference numeral 60 indicates a bush formed in a C-shaped cylinder.
- the bush 60 is arranged closer to the tip in the axis L1 direction than the flange portion 73 of the scale body 70, and in the radial direction, the outer peripheral surface of the ring body portion 71 of the scale body 70 and the inner surface of the locking protrusion 76a. It is inserted between and.
- the locking protrusion 76a is supported from the inner surface side by the bush 60 arranged in this way.
- the bush 60 is made of metal, preferably stainless steel.
- the number of arm portions 76 provided on the scale 70 is not limited to three as in the present embodiment, but a plurality of arms 76 may be sufficient.
- the shape of the locking protrusion 76a is not limited to a hemispherical shape, and may be any shape as long as it is suitable for sliding while rubbing. Further, the above-mentioned arm portion 76 and the locking protrusion portion 76a are collectively referred to as a contact portion 77.
- the spacer 50 is formed in a cylindrical shape extending along the axis L1 direction (central axis J direction), and is arranged radially outside the scale body 70 so as to surround the scale body 70. ing.
- a through hole portion 52 penetrating in the axis L1 direction is formed inside the spacer 50, and the inner diameter of the through hole portion 52 is formed to be slightly larger than the outer diameter of the flange portion 73 of the scale body 70. Therefore, the scale 70 can move in the axis L1 direction with respect to the spacer 50.
- the spacer 50 is formed of, for example, a synthetic resin, preferably a polybutylene terephthalate resin (PBT resin).
- a fixing piece 57a projecting inward in the radial direction is provided on the inner surface of the spacer 50 forming the through hole portion 52.
- the circumferential fixing portions 57 composed of a pair of fixing pieces 57a arranged at predetermined intervals in the circumferential direction are arranged on both sides in the radial direction with the central axis J interposed therebetween. That is, two peripheral fixing portions 57 are provided on the inner surface forming the through hole portion 52.
- the fixed piece 57a extends from the inner surface of the through hole portion 52 at an acute angle with respect to the inner surface and extends inward with respect to the inner surface and the first surface portion 57b in a plan view. It has a second surface portion 57c that has a smaller acute angle and extends inward.
- fixing pieces 57a are inserted into the fixing hole portion 21b formed on the shaft L1 direction proximal end side of the needle valve holder 21 shown in FIG. 16 to prevent the spacer 50 from rotating around the shaft L1.
- the fixing hole portion 21b is formed in the peripheral wall 21c on the proximal end side in the first axis L1 direction of the needle valve holder 21, opens at the end of the peripheral wall 21c on the proximal end side in the axial L1 direction, and extends toward the distal end side in the axial L1 direction. There is.
- the fixing hole portion 21b extends in a direction inclined with respect to the radial direction in a plan view, and the first fixing surface portion 21b1 to which the first surface portion 57b of the fixing piece 57a abuts and the second fixing piece 57a It has a second fixed surface portion 21b2 with which the surface portion 57c abuts.
- an opening 58 extending from the proximal end side in the axis L1 direction to the distal end side is formed between the pair of fixed pieces 57a adjacent to each other in the circumferential direction of the spacer 50, and the shaft is formed in the opening 58.
- a plate-shaped leg portion 59 that is connected to the end portion on the base end side in the L1 direction and extends toward the tip end side in the L1 direction is formed.
- a locking convex portion 59a protruding inward in the radial direction is provided on the inner surface of the tip portion of the leg portion 59.
- the radial inner end of the locking convex portion 59a slightly protrudes inward from the inner surface of the through hole portion 52, and the shaft L1 is located on the axial L1 direction proximal end side of the needle valve holder 21 shown in FIG. It is locked between a pair of annular step portions 21d and 21d'formed at intervals in the direction. Therefore, the spacer 50 is restricted from moving in the direction of the first axis L1 of the needle valve holder 21 and is fixed.
- annular ridge portion 53 projecting outward in the radial direction is formed in an annular shape in the circumferential direction in the axial intermediate portion on the radial outer side of the spacer 50.
- a step portion 54 extending radially outward is formed in an annular shape on the proximal end side in the axis L1 direction with respect to the annular ridge portion 53.
- a pair of locking claw portions 51 arranged on both sides in the radial direction sandwiching the central axis J and projecting toward the axial L1 axial proximal end side are provided.
- a locking projection 51a projecting inward in the radial direction is provided at the end of the axial base end of the locking claw portion 51 in the axial direction.
- the surface of the locking projection 51a facing the axial direction proximal end side forms a flat surface portion 51b extending in a direction (diametrical direction) orthogonal to the axial L1 direction.
- the inner surface 51c of the locking protrusion 51a facing the tip end side in the axis L1 direction abuts on the flange portion 73 of the scale body 70 to regulate the range of movement of the scale body 70 toward the base end side in the axis L1 direction. do.
- a plurality of locking recesses 55 recessed inward in the radial direction are provided at intervals in the circumferential direction. These locking recesses 55 are used to lock the rotation of the handle 32.
- the handle 32 has a top plate portion 32b extending in the radial direction and a cylindrical shape extending from the peripheral edge portion of the top plate portion 32b toward the tip end side in the axis L1 direction. It has a side plate portion 32c and is formed in a ridged cylinder shape.
- the handle 32 is formed of, for example, a synthetic resin, preferably a polyacetal resin (POM resin).
- the handle 32 having such a shape is mounted on the radial outer side of the spacer 50 so as to surround the axial L1 direction proximal end side of the spacer 50.
- an engaging protrusion portion 32a extending along the central axis J (that is, the axis L1) and projecting toward the tip end side in the axis L1 direction is provided.
- the engaging protrusion 32a has a shape similar to the cross-sectional shape of the through hole 43 of the shaft portion 40, and is inserted into the through hole 43 of the shaft portion 40. Therefore, as described above, the handle 32 is fixed to each other around the shaft portion 40 and the shaft L1 and rotates integrally, while being movable in the shaft L1 direction with respect to the shaft portion 40. ing.
- the top plate portion 32b of the handle 32 is provided with a scale indicating portion 34 indicating the scale 72b corresponding to the rotation operation amount of the handle 32.
- the scale indicating portion 34 is a "scale indicating opening" opened by penetrating the top plate portion 32b in the axis L1 direction, and has a rectangular shape extending radially inward from the peripheral edge of the top plate portion 32b. It is made up.
- the flat surface portion 72a of the scale plate 72 of the scale body 70 is exposed from the scale instruction opening 34. Therefore, the scale 72b (see FIG. 11) displayed on the flat surface portion 72a can be visually recognized through the scale indicating portion 34.
- a plurality of engaging convex portions 32d protruding inward in the radial direction and extending in the axial L1 direction are formed at equal intervals in the circumferential direction on the inner peripheral surface of the intermediate portion of the side plate portion 32c in the axial L1 direction. It is provided.
- the engaging convex portion 32d meshes with the locking recess 55 (see FIG. 14) of the spacer 50 to rotate the handle 32. To lock.
- the side plate portion 32c is provided on the inner surface of the tip portion in the shaft L1 direction in the side plate portion 32c.
- the engaging claw portion 32e is locked to the annular ridge portion 53 provided on the outer peripheral surface of the spacer 50, and the handle 32 is held at the lock position Pr.
- the handle 32 is moved from the lock position Pr to the axial L1 direction proximal end side, the engaging claw portion 32e gets over the annular ridge portion 53 and is closer to the axial L1 direction proximal end side than the annular ridge portion 53. It is locked to the step portion 54 provided in the above.
- the engaging claw portion 32e locked to the step portion 54 is sandwiched between the step portion 54 and the annular ridge portion 53, and the handle 32 is held in an unlocked state.
- the shaft portion 40, the scale body 70, and the spacer 50 are coaxially arranged on the shaft L1 inside the handle 32. Therefore, the flow rate control valve 10 can be further miniaturized as compared with the conventional one in which the central axis J of the scale body 70 is arranged at a position deviated in the radial direction with respect to the axis L1.
- the second body 13 projects radially outward from the first body 12 on the side surface of the valve accommodating portion 12a in the first body 12. It is connected like this.
- the second body 13 is formed in a substantially columnar shape in appearance, and the end portion on the base end side (upper end side in FIG. 1) in the axis L2 direction is airtightly closed, and the tip end side in the axis L2 direction (the tip end side in the axis L2 direction).
- the second port 15 is provided at the end of (the lower end side in FIG. 1).
- a male screw 18 is formed on the outer periphery of the second port 15 around the shaft L2, and is attached to the body of a pneumatic device such as a pneumatic cylinder by screwing and connected to a flow path formed in the body. You can do it.
- the inside of the second body 13 forms a part of the fluid flow path 16, and the internal flow path 16c formed in the first body is communicated with the second port 15.
- the flow path 19 is formed.
- the communication flow path 19 extends in the second body 13 in the radial direction orthogonal to the axis L2, and is connected to the internal flow path 16c of the first body in the communication flow path 19a and in the second body 13. It extends on the shaft L2 along the shaft L2, and is formed by a port flow path 19b having one end connected to the connecting flow path 19a and the other end connected to the second port 15. That is, the port flow path 19b is formed at a position radially outward from the axis L1 by a distance X (see FIG. 2) from the axis L2.
- FIG. 19 shows a state in which the handle 32 is moved to the lock position Pr and the rotation of the handle 32 is restricted.
- the handle 32 is pressed toward the tip end side in the axis L1 direction, and the engaging convex portion 32d (see FIG. 18) of the handle 32 meshes with the locking recess 55 (see FIG. 14) of the spacer 50.
- the rotation of the handle 32 is restricted.
- the scale 70 that comes into contact with the inner surface of the top plate portion 32b of the handle 32 also moves toward the tip end side in the shaft L1 direction, and the gear portion 47b moves. It becomes a state away from the tooth joint portion 47a.
- the shaft portion 40 moves toward the tip end side in the shaft L1 direction due to the urging force of the coil spring 62, and the cam copying protrusion 41b of the cam mechanism portion 45 is in contact with the cam flat surface portion 46b of the cam surface 46.
- the scale 70 is moved to the base end side in the shaft L1 direction by the urging force of the coil spring 62.
- the gear portion 47b provided on the scale 70 also moves in the same direction, and the meshing portion 47a and the gear portion 47b of the clutch mechanism 47 are in a meshed state. Therefore, the scale 70 can rotate in a state of being fixed to each other around the shaft portion 40 and the shaft L1.
- the handle 32 is further rotated, and as shown in FIG. 21, when the cam copying protrusion 41b reaches the cam protrusion 46a against the urging force of the coil spring 62, the shaft portion 40 moves in the shaft L1 direction. Move to the base end side. Then, the meshing between the meshing portion 47a and the gear portion 47b of the clutch mechanism 47 is released, the rotation of the shaft portion 40 is not transmitted to the scale body 70, and the rotation of the scale body 70 is stopped.
- the scale indicating portion 34 scale indicating opening
- the scale 72b pointed to by the scale indicating unit 34 is switched to the adjacent scale 72b.
- the scale 72b displayed in the scale instruction opening 34 is switched from “1” to “ ⁇ ” (1.5) attached between “1” and “2”.
- the cam copying protrusion 41b of the cam mechanism portion 45 moves to a position on the cam surface 46 overcoming the cam projection portion 46a, and the gear portion 47b of the clutch mechanism 47 and the toothed portion are engaged.
- the 47a is in a state of being toothed again, and the scale 70 and the handle 32 are in a state of being fixed to each other around the axis L. Therefore, the scale 70 and the handle 32 are rotated together again.
- the handle 32 formed in the shape of a ridge, the scale 70, and the clutch mechanism 47 for switching the scale 70 have the spacer 50 on the shaft L1. They are arranged coaxially. Therefore, for example, the radial dimension of the first body 12 is made smaller than that of the conventional one in which the central axis J of the scale body 70 is arranged at a position deviated in the radial direction with respect to the axis L1. Therefore, the flow rate control valve 10 can be further miniaturized.
- FIG. 17 shows a modified example of the spacer 50 of the flow rate control valve 10 described above.
- the case where the scale body 70 is provided with the arm portion 76 having the locking projection portion 76a is described.
- the locking protrusion 76a is formed in a hemispherical shape, the contact width in which the locking protrusion 76a contacts the inner surface of the spacer 50 is relatively small, and the generated resistance is also small. Therefore, as shown in FIG. 22, a recess 56 that is hemispherically recessed may be provided on the inner peripheral surface of the spacer 50 facing the locking protrusion 76a.
- a large number of the recesses 56 are continuously provided in the circumferential direction and are formed in a wavy shape. Therefore, when a rotating force acts on the scale 70, it is necessary to elastically deform the arm portion 76 inward in the radial direction in order to allow the locking protrusion 76a inserted in the recess 56 to escape from the recess 56. Therefore, the resistance force in the rotation direction of the scale 70 can be further increased. Therefore, when the scale 72b pointed to by the scale indicating unit 34 is switched by the clutch mechanism 47, the rotation of the scale body 70 can be more reliably prevented.
- the locking protrusion 76a is provided on the arm 76 and the recess 56 is provided on the inner surface of the spacer 50 is shown, but the present invention is not limited to this.
- a recess 56 may be provided in the arm portion 76, and a plurality of locking protrusions 76a capable of engaging with the recess 56 may be provided on the inner surface of the spacer 50 in the circumferential direction.
- the scale indicating portion 34 for instructing the scale 72b is a scale indicating opening provided in the top plate portion 32b of the handle 32 is shown, but the present invention is not limited to this, and the scale indicating portion is not limited to this. 34 may be, for example, an arrow or the like.
- the number on the scale 72b does not have to represent the number of times the handle has been rotated 360 degrees as in the present embodiment.
- the opening degree of the needle valve 27 is divided into equal parts and the same. It can also be a number representing the amount of rotation operation of the handle corresponding to each opening degree of the needle valve 27.
- the cam mechanism unit 45 is shown as the axial drive means for operating the shaft portion 40 in the axis L1 direction, but the present invention is not limited to this, and various drive means can be adopted.
- Flow control valve 12 1st body (body) 12a Valve accommodating part 12b Port forming part 13 2nd body 14 1st port 15 2nd port 16 Fluid flow path 16a 1st flow path 16b 2nd flow path (flow path) 16c Internal flow path 17 Pipe fitting 17a Locking piece 17b Sleeve bush 18, 30 Male screw 19 Communication flow path 19a Communication flow path 19b Port flow path 20
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- Indication Of The Valve Opening Or Closing Status (AREA)
- Mechanically-Actuated Valves (AREA)
Abstract
Description
前記軸周りに回転可能に支持され、前記ハンドルの回転操作量を表す目盛りが付された目盛体と、前記ハンドルと前記軸周りに常時一体に回転し、前記ハンドルの回転操作量に対応した前記目盛りを指し示す目盛指示部と、前記ハンドルの回動を前記目盛体に伝達したりその伝達を遮断したりすることにより、前記ハンドルを所定角度回動させる毎に、前記目盛指示部が指し示す前記目盛体の前記目盛りを切り替えるクラッチ機構と、をさらに有しており、前記クラッチ機構は、互いに係合することにより前記ハンドルの回動を前記目盛体に伝達して、前記目盛指示部と前記目盛体とを、前記軸周りに一体に回転させる係合部及び被係合部と、前記ハンドルを所定角度回動させる毎に前記係合部と前記被係合部との係合を解除して、前記ハンドルの回動により前記目盛指示部が前記目盛体に対して前記軸周りに回転することを許容し、その前記目盛体に対する前記目盛指示部の回転により、前記目盛指示部が指し示す前記目盛体の前記目盛りが切り替えられた後に、前記係合部と前記被係合部とを再係合させるクラッチ駆動機構と、を有している、ことを特徴とする。
12 第1ボディ(ボディ)
12a 弁収容部
12b ポート形成部
13 第2ボディ
14 第1ポート
15 第2ポート
16 流体流路
16a 第1流路
16b 第2流路(流路)
16c 内部流路
17 管継手
17a 係止片
17b スリーブブッシュ
18、30 雄ネジ
19 連通流路
19a 連絡流路
19b ポート流路
20 チェック弁ホルダー
20a、56 凹部
21 ニードル弁ホルダー
21a 弁孔
21b 固定孔部
21b1 第1固定面部
21b2 第2固定面部
21c 周壁
22 中心孔
23 シール部材
25 チェック弁
26 シート部
27 ニードル弁
27a 絞り部
27b ニードル本体部
27c 切り欠き面
28 弁シール
29 絞り孔
31 ニードルガイド
31a 雌ネジ
31b、43 貫通孔
32 ハンドル
32a 係合突起部
32b 天板部
32c 側板部
32d 係合凸部
32e 係合爪部
33、51a 係止突起部
34 目盛指示部(目盛指示開口)
40 軸部
41 第1軸部分
41a 付勢フランジ部
41b カム倣い突部
42 第2軸部分
43a、51b、72a 平面部
43b 湾曲部
45 カム機構部
46 カム面
46a カム突起部
46b カム平面部
47 クラッチ機構
47a 歯合部(係合部)
47a’ 歯合片
47b ギア部(被係合部)
47b’ ギア片
48 クラッチ駆動機構
50 スペーサ
51 係止爪部
51c 内面
52 貫通孔部
52a 内周面(抵抗力発生面)
53 環状突条部
54 段部
55 係止凹部
57 周方向固定部
57a 固定片
57b 第1面部
57c 第2面部
58 開口部
59 脚部
59a 係止凸部
60 ブッシュ
62 コイルバネ(バネ部)
64 バネ座
70 目盛体
71 リング本体部
72 目盛盤
72b 目盛り
73 鍔部
74 リング孔部
75 バネ座受け
76 腕部(当接部)
76a 係止突起部(当接部)
77 当接部
J 中心軸
L1 第1軸
L2 第2軸
Pr ロック位置
Claims (6)
- 軸方向に延びるボディと、
前記ボディ内に形成された流路と、
前記ボディの前記軸方向一方側に配設され、前記ボディに対して前記軸周りに回転可能に支持されたハンドルと、
前記ボディ内において前記ハンドルと同軸上に配置され、前記ハンドルの回転操作量に応じて前記軸方向に移動することにより、前記流路の開度を調節するニードル弁と、を有し、
前記ハンドルの回転操作量に応じて、前記流路を流れる流体の流量を制御することが可能な流量制御弁であって、
前記流量制御弁は、
前記軸周りに回転可能に支持され、前記ハンドルの回転操作量を表す目盛りが付された目盛体と、
前記ハンドルと前記軸周りに常時一体に回転し、前記ハンドルの回転操作量に対応した前記目盛りを指し示す目盛指示部と、
前記ハンドルの回動を前記目盛体に伝達したりその伝達を遮断したりすることにより、前記ハンドルを所定角度回動させる毎に、前記目盛指示部が指し示す前記目盛体の前記目盛りを切り替えるクラッチ機構と、をさらに有しており、
前記クラッチ機構は、
互いに係合することにより前記ハンドルの回動を前記目盛体に伝達して、前記目盛指示部と前記目盛体とを、前記軸周りに一体に回転させる係合部及び被係合部と、
前記ハンドルを所定角度回動させる毎に前記係合部と前記被係合部との係合を解除して、前記ハンドルの回動により前記目盛指示部が前記目盛体に対して前記軸周りに回転することを許容し、その前記目盛体に対する前記目盛指示部の回転により、前記目盛指示部が指し示す前記目盛体の前記目盛りが切り替えられた後に、前記係合部と前記被係合部とを再係合させるクラッチ駆動機構と、を有している、
ことを特徴とする流量制御弁。 - 前記クラッチ駆動機構は、
前記ボディに対して固定的に設けられて前記軸周りに環状に延びるカム面と、
前記カム面に対向配置されて、前記ハンドルの回動に伴って前記軸周りに回動して前記カム面上を摺動するカム倣い突部と、を有し、
前記カム面は、
前記軸方向一方側へ突出するカム突起部と、
前記カム突起部の底部から前記軸方向一方側を向いて平面状に延びるカム平面部と、を有し、
前記カム倣い突部と前記被係合部とは、常時一体に回転可能に且つ常時一体に前記軸方向に移動可能に支持され、
前記係合部は、前記ボディに対して固定的に支持され、
前記クラッチ駆動機構は、前記ハンドルを所定角度回動させる毎に、前記カム倣い突部が前記カム突起部上を摺動して、前記被係合部が前記係合部に対して軸方向一方側に移動することにより、前記被係合部と前記係合部との係合を解除して、前記ハンドルの回動により前記目盛指示部が前記目盛体に対して前記軸周りに回転することを許容する
ことを特徴とする請求項1に記載の流量制御弁。 - 前記クラッチ駆動機構は、
前記軸方向一方側と逆の軸方向他方側に向かって、前記カム倣い突部及び前記被係合部を常時付勢するバネ部を有し、前記目盛指示部が指し示す前記目盛体の前記目盛りが切り替えられた後において、前記バネ部の付勢により、前記カム倣い突部を軸方向他方側に移動させて前記カム平面部に当接させ、且つ前記被係合部を前記係合部と再係合させる
ことを特徴とする請求項2に記載の流量制御弁。 - 前記流量制御弁は、前記ボディに対して固定的に設けられて前記軸周りに環状に延びる抵抗力発生面を有し、
前記目盛体は、前記抵抗力発生面に摺動可能に当接する当接部を有し、
前記被係合部と前記係合部との係合が解除された状態において、前記当接部が前記抵抗力発生面に当接して生じる抵抗力により、前記ハンドルの回動に伴う前記目盛体の供回りが阻止される
ことを特徴とする請求項2又は3に記載の流量制御弁。 - 前記当接部は、その径方向外側に向かって突設された係止突起部を有し、
前記抵抗力発生面は、前記軸周りに等間隔を有して径方向外側に向かって窪んだ複数の凹部が設けられて形成されている
ことを特徴とする請求項4に記載の流量制御弁。 - 前記目盛指示部は、前記ハンドルに開口した目盛指示開口であり、
前記目盛体に付された前記目盛りは、前記目盛指示開口を通じて外部から目視可能である
ことを特徴とする請求項1から5のいずれか1項に記載の流量制御弁。
Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN202180064700.5A CN116194698A (zh) | 2020-07-30 | 2021-07-12 | 流量控制阀 |
MX2023001291A MX2023001291A (es) | 2020-07-30 | 2021-07-12 | Valvula de control de tasa de flujo. |
KR1020237004011A KR20230042472A (ko) | 2020-07-30 | 2021-07-12 | 유량 제어 밸브 |
EP21849646.1A EP4191106A1 (en) | 2020-07-30 | 2021-07-12 | Flow rate control valve |
US18/006,930 US20230265942A1 (en) | 2020-07-30 | 2021-07-12 | Flow rate control valve |
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JP2020-129543 | 2020-07-30 | ||
JP2020129543A JP7409591B2 (ja) | 2020-07-30 | 2020-07-30 | 流量制御弁 |
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WO2022024728A1 true WO2022024728A1 (ja) | 2022-02-03 |
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PCT/JP2021/026056 WO2022024728A1 (ja) | 2020-07-30 | 2021-07-12 | 流量制御弁 |
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US (1) | US20230265942A1 (ja) |
EP (1) | EP4191106A1 (ja) |
JP (1) | JP7409591B2 (ja) |
KR (1) | KR20230042472A (ja) |
CN (1) | CN116194698A (ja) |
MX (1) | MX2023001291A (ja) |
TW (1) | TW202219677A (ja) |
WO (1) | WO2022024728A1 (ja) |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
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JP2017048902A (ja) * | 2015-09-04 | 2017-03-09 | Ckd株式会社 | 流量制御弁 |
JP6179510B2 (ja) | 2012-06-14 | 2017-08-16 | Smc株式会社 | 流量制御装置 |
JP2018204777A (ja) * | 2017-06-09 | 2018-12-27 | 株式会社日本ピスコ | 流量制御弁 |
Family Cites Families (2)
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US8689826B2 (en) | 2011-05-25 | 2014-04-08 | Trident Emergency Products, Llc | Valve control hand wheel with position indicator and magnetic couple feature |
KR101819921B1 (ko) | 2016-10-10 | 2018-01-18 | 삼성전자주식회사 | 밸브 셔터 |
-
2020
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2021
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- 2021-07-12 WO PCT/JP2021/026056 patent/WO2022024728A1/ja active Application Filing
- 2021-07-12 KR KR1020237004011A patent/KR20230042472A/ko unknown
- 2021-07-12 EP EP21849646.1A patent/EP4191106A1/en active Pending
- 2021-07-12 MX MX2023001291A patent/MX2023001291A/es unknown
- 2021-07-12 CN CN202180064700.5A patent/CN116194698A/zh active Pending
- 2021-07-12 TW TW110125496A patent/TW202219677A/zh unknown
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
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JP6179510B2 (ja) | 2012-06-14 | 2017-08-16 | Smc株式会社 | 流量制御装置 |
JP2017048902A (ja) * | 2015-09-04 | 2017-03-09 | Ckd株式会社 | 流量制御弁 |
JP2018204777A (ja) * | 2017-06-09 | 2018-12-27 | 株式会社日本ピスコ | 流量制御弁 |
Also Published As
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KR20230042472A (ko) | 2023-03-28 |
TW202219677A (zh) | 2022-05-16 |
CN116194698A (zh) | 2023-05-30 |
US20230265942A1 (en) | 2023-08-24 |
JP7409591B2 (ja) | 2024-01-09 |
MX2023001291A (es) | 2023-02-22 |
EP4191106A1 (en) | 2023-06-07 |
JP2022026193A (ja) | 2022-02-10 |
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