WO2015111334A1 - Valve - Google Patents

Valve Download PDF

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Publication number
WO2015111334A1
WO2015111334A1 PCT/JP2014/083521 JP2014083521W WO2015111334A1 WO 2015111334 A1 WO2015111334 A1 WO 2015111334A1 JP 2014083521 W JP2014083521 W JP 2014083521W WO 2015111334 A1 WO2015111334 A1 WO 2015111334A1
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WO
WIPO (PCT)
Prior art keywords
valve body
valve
contact
state
air flow
Prior art date
Application number
PCT/JP2014/083521
Other languages
French (fr)
Japanese (ja)
Inventor
久幸 加藤
裕久 大上
Original Assignee
フタバ産業株式会社
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by フタバ産業株式会社 filed Critical フタバ産業株式会社
Publication of WO2015111334A1 publication Critical patent/WO2015111334A1/en

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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
    • F16K27/00—Construction of housing; Use of materials therefor
    • F16K27/02—Construction of housing; Use of materials therefor of lift valves
    • F16K27/0209—Check valves or pivoted valves
    • F16K27/0218—Butterfly valves
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N13/00—Exhaust or silencing apparatus characterised by constructional features ; Exhaust or silencing apparatus, or parts thereof, having pertinent characteristics not provided for in, or of interest apart from, groups F01N1/00 - F01N5/00, F01N9/00, F01N11/00
    • F01N13/08—Other arrangements or adaptations of exhaust conduits
    • F01N13/087—Other arrangements or adaptations of exhaust conduits having valves upstream of silencing apparatus for by-passing at least part of exhaust directly to atmosphere
    • 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
    • F16K1/16—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 with pivoted closure-members
    • F16K1/18—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 with pivoted closure-members with pivoted discs or flaps
    • F16K1/22—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 with pivoted closure-members with pivoted discs or flaps with axis of rotation crossing the valve member, e.g. butterfly valves
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N2240/00—Combination or association of two or more different exhaust treating devices, or of at least one such device with an auxiliary device, not covered by indexing codes F01N2230/00 or F01N2250/00, one of the devices being
    • F01N2240/36—Combination or association of two or more different exhaust treating devices, or of at least one such device with an auxiliary device, not covered by indexing codes F01N2230/00 or F01N2250/00, one of the devices being an exhaust flap

Definitions

  • the present invention relates to a valve for opening and closing an air flow path of an exhaust heat recovery device or the like.
  • a valve for opening and closing an exhaust passage is provided, and by controlling the exhaust pressure, a large amount of air flows into the combustion chamber of the engine, or the engine Exhaust noise is reduced.
  • a butterfly valve or a catch valve that opens and closes an exhaust passage by rotating a plate-like valve body supported on a rotating shaft may be used.
  • a butterfly valve or a catch valve that opens and closes an exhaust passage by rotating a plate-like valve body supported on a rotating shaft.
  • the main causes of abnormal noise are due to the shakiness and vibration of the valve body, the whistling phenomenon caused by air flow, and the collision of the valve body with the case when the valve is opened and closed.
  • the present invention has been made in view of such problems, and the object thereof is to suppress a collision sound caused by opening and closing of the valve body without providing a separate member on the valve body and the rotating shaft of the valve body. Is to provide a simple valve.
  • a valve according to the present invention includes a case in which an air flow path is formed and a rotation axis that is perpendicular to the air flow direction of the air flow path, thereby rotating the air flow.
  • a valve body that switches between a first state that opens a path and a second state that closes the air flow path; and the case, wherein the valve body switches from the first state to the second state.
  • a contact portion that contacts the valve body and restricts the rotation of the valve body, and the contact portion contacts only a region in the vicinity of the rotating shaft of the valve body, It is provided so that it may not contact
  • the rotation of the valve body when the valve body is closed which is the second state of the valve body, is restricted by bringing the contact portion into contact with only the vicinity of the rotation shaft of the valve body.
  • the case includes a pedestal raised on the inside of the case, and the contact portion is formed at an end of the pedestal in the air flow direction.
  • the contact portion that collides with the valve body in order to restrict the rotation of the valve body can be easily fixed to the case by providing the contact portion on the pedestal raised on the inside of the case. become.
  • a projecting portion that protrudes from the valve body is provided in a region in the vicinity of the rotation axis of the valve body, and the contact portion is configured so that the valve body changes from the first state to the second state.
  • the valve body is provided with a protrusion, and the protrusion and the contact portion are in contact with each other, so that the contact portion is reliably contacted at a predetermined position near the rotation axis of the valve body.
  • Can do In this way, the position of the valve body is regulated by reliably applying the contact part to the position where the rotational speed of the valve body is slow, so that the collision noise generated when the valve body comes into contact with the contact part can be kept small. Can do.
  • the contact portion is provided at a position protruding from the pedestal end portion at the end portion in the air flow direction.
  • the contact portion by providing the contact portion at the protruding position of the end portion of the pedestal, the contact portion can be reliably brought into contact with the target position in the vicinity of the rotation axis of the valve element.
  • the present invention it is possible to provide a valve capable of suppressing a collision sound due to opening and closing of the valve body without providing a separate member on the valve body and the rotating shaft of the valve body.
  • FIG. 1 is a perspective view showing a configuration of a valve according to the first embodiment.
  • FIG. 2A is a perspective view of the valve body, the valve stem, and the contact portion extracted from FIG.
  • FIG. 2B is a perspective view showing a state in which the valve is opened by rotating (A) by 90 degrees.
  • the valve 10 includes a case 11 that forms an air flow path, a valve body 12 that opens and closes the air flow path, and the valve body 12 that is perpendicular to the air flow direction of the air flow path. And a valve rod 13 that rotates around a rotating shaft.
  • the case 11 has a cylindrical shape, and an air flow is formed in the case 11 in the axial direction of the cylinder indicated by a broken line arrow in the figure.
  • the case 11 penetrates the valve stem 13 in the diameter direction of the case 11 in order to rotatably support the valve stem 13.
  • the case 11 is supported by the rotation support portion 11a with the one end portion 13a of the valve rod 13 passed through as a support portion. Therefore, the rotation support portion 11a side is in a closed state without leading the end portion 13a to the outside.
  • the case 11 leads the other end 13b out of the case 11 by the lead-out part 11b as a part to be rotated.
  • the derived end 13b is rotationally driven by a drive source such as a motor (not shown).
  • the valve body 12 has a disc shape, and is formed by bending one plate-like body and joining it to one side surface of the valve stem 13 as shown in FIGS. 2 (A) and 2 (B). That is, in the state of FIG. 2 (A), the valve rod 13 is exposed, and on the opposite side, as shown in FIG. 2 (B), the valve body 12 is curved and covers the valve rod 12. It is configured as follows.
  • the joining method of the valve plate 12 and the valve stem 13 is merely an example, and may be configured by other joining methods such as joining the valve stem through the valve plate, It is also possible to form by other methods, such as integrally forming.
  • the valve body 12 is also in a second state (see FIG. 2 (A)) in which the air flow indicated by broken line arrows in FIG. 1 is closed, and a first state (see FIG. 2 (B)) in which the air flow path is opened.
  • a second state in which the air flow indicated by broken line arrows in FIG. 1 is closed
  • a first state in which the air flow path is opened.
  • the valve body 12 is configured with an outer diameter sufficient to close the air flow path with a clearance that does not hinder rotation with the inner wall of the case 11. That is, the diameter of the valve body 12 may be substantially equal to the diameter of the inner wall of the case 11.
  • the valve 10 constitutes a butterfly valve that opens and closes the air flow path by the case 11, the valve body 12, and the valve rod 13 described above.
  • the contact portion 14 that contacts the valve body 12 and restricts the rotation of the valve body 12 is fixed to the case 11. Provided.
  • the contact portion 14 is formed in a protruding shape or a trapezoidal shape by welding or the like on the inner wall of the case 11.
  • the abutment portion 14 is formed so as to abut only on a region of the valve body 12 in the vicinity of the valve stem 13 that is a rotating shaft, and not in contact with a region farther from the valve stem 13 than a region in the vicinity of the valve stem 13. The This is due to the following reason.
  • the farthest distance from the axis l of the valve stem 13 that is the rotation axis of the valve element 12 is the valve element that has risen perpendicularly from the center O of the valve element 12 to the axis l.
  • 12 is a point P on the outer periphery of 12 or a point P ′ on the outer periphery of the valve body 12 descending perpendicularly from the center O to the axis l. Since the point P or the point P ′ is the farthest from the rotation axis, when the valve body 12 rotates, the rotation speed is the fastest at the point P or the point P ′ as compared with other portions. Such a point P or point P ′ has the highest collision energy and the highest collision sound when the rotation of the valve body 12 is restricted by contacting a member at these portions.
  • the contact portion 14 of the present embodiment is provided in the case 11 only in a region in the vicinity of the valve stem 13 that is the rotating shaft, and in a region farther from the valve stem 13 than the region in the vicinity of the valve stem 13. It was decided not to. In other words, the contact portion 14 is fixed to the case 11 while avoiding a portion where the valve body 12 has a high rotational speed.
  • the abutting portion 14 is located at a position close to the valve stem 13, which is the slowest rotation speed of the valve body 12. It is configured with a size sufficient to regulate the rotation.
  • the contact portion 14 is provided by avoiding the point P or the point P ′, the effect of the present invention can be obtained. Or if it is an aspect which is not provided in point P ', it will not be restricted to the aspect shown in FIG. For example, when the contact portion 14 is provided within a range of 45 degrees with respect to the axis 1 from the center O in FIG. 2A, a sufficient effect of the present invention is exhibited.
  • the abutting portion 14 is constituted by a total of two in the case 11. That is, at the closed position of the valve body 12 shown in FIG. 2 (A), on the side facing the rotational direction of the valve body 12 (see FIG. 2 (B)) indicated by the solid line arrow in FIG. It is formed on the side that stops rotation.
  • the air flow path is formed from the left side to the right side, and the valve body is in the open state of the valve body 12. It is assumed that the rotation is clockwise (clockwise) from the state 2 (B) toward the closed state of FIG. 2 (A).
  • the contact portion 14a is provided on the lower side of the valve rod 13 in the figure and on the upstream side of the air flow path.
  • the abutting portion 14b is provided on the upper side of the valve rod 13 in the drawing and on the downstream side of the air flow path.
  • the structure which provided such a contact part 14 with respect to the case 11 as such is only an example.
  • the contact portion 14 is provided on either one of the sides facing the rotation direction of the valve body 12 (see FIG. 2B).
  • the present invention is not limited to a pair as in the present embodiment, and a plurality of pairs may be provided on one side, and two or three pairs may be provided as a whole.
  • FIGS. 3 and 4 show the rotational operation of the valve body 12 and the action of the contact portion 14 by taking out the valve body 12, the valve rod 13, and the contact portion 14 from the configuration of the valve 10 shown in FIG. It is a figure. 3 is a perspective view, and FIG. 4 is a side view. 3A and 4A show a first state in which the valve body 12 opens the air flow path, and FIGS. 3C and 4C show the valve body 12 in the air flow path. FIG. 3B and FIG. 4B show a state intermediate between the first state and the second state.
  • valve body 12 when the valve rod 13 is rotated by a driving source (not shown), the valve body 12 starts to rotate from the first state in the direction indicated by the solid line arrow in the drawing. .
  • the surface of the valve body 12 is brought into contact with the contact portions 14a and 14b at the stage where the second state shown in FIGS. 3C and 4C is reached after the state shown in FIGS.
  • the rotation of the valve body 12 is restricted by contact. Note that, from the second state where the valve body 12 is closed to the first state where the valve body 12 is opened, the valve body 12 is reversed from FIG. 3 (C) to FIG. 3 (A) or FIG. 4 (C) to (A). Rotates and displaces.
  • the contact portions 14a and 14b are provided on the inner wall of the case 11 in the vicinity of the valve rod 13 that is the rotation shaft of the valve body 12, and therefore the contact portion 14a.
  • abuts is slow compared with the part far from the valve rod 13 of the valve body 12.
  • FIG. Therefore, the collision energy when the contact portions 14a and 14b contact the valve body 12 can be reduced. Thereby, in the valve 10, it is possible to reduce a collision sound caused by the contact of the valve body 12 with the contact portion 14.
  • valve of the present embodiment it is possible to suppress a collision sound due to opening and closing of the valve body without providing a separate member on the valve body and the rotating shaft of the valve body.
  • FIGS. 5 and 6 are perspective views showing the configuration of the valve 20 according to the second embodiment, and FIGS. 7 and 8 show the valve body and the valve among the configurations of the valve 20 shown in FIGS. 5 and 6. It is a figure which takes out the base provided with the stick
  • the case 11 of the valve 20 is provided with a pedestal 25 (25a, 25b) raised on the inside of the case 11.
  • the bases 25a and 25b are joined to the inner wall of the case 11 by welding or the like.
  • the pedestals 25a and 25b each have a semi-cylindrical shape with a semicircular cross section obtained by dividing the cylinder in the diameter direction.
  • the semicircle here means not only a true semicircle but also an elliptical semicircle, and can be appropriately changed according to the shape and design of the case 11.
  • the pedestal 25a is formed on the lower side of the valve rod 13 in the drawing and on the upstream side of the air flow path
  • the pedestal 25b is formed on the upper side of the valve rod 13 in the drawing and on the downstream side of the air flow passage.
  • the contact portion 24 is provided at the ends of the pedestals 25a and 25b at the end in the air flow direction, which is a position where the contact portion 24 is in contact with the valve body 12 in the closed state of the valve body 12 (FIGS. 7C and 8C). It is done.
  • the position where the contact part 24 is provided is the same as that of the contact part 14 of the first embodiment. That is, the contact portion 24 is formed only in a region near the valve stem 13 and is not formed in a region away from the valve stem 13. The contact portion 24 is provided to avoid a portion where the rotational speed of the valve body 12 is fast.
  • the contact portion 24 is formed so as to protrude from the end of the base 25 in the air flow direction. That is, the abutment portion 24 is formed to protrude so as to abut against a position close to the valve stem 13 which is a position where the rotation speed of the valve body 12 is slow, and to restrict the rotation of the valve body 12. It is configured with a sufficient size (end area).
  • a total of four contact portions 24 (two contact portions 24a and 24b and contact portions 24c and 24d) are provided on each of the pedestals 25a and 25b, but this is only an embodiment. .
  • the present invention is not limited to such an embodiment, and only one of the contact portions 24 may be provided. In addition, two or three may be selected and provided, and four or more may be provided. It is also possible to configure.
  • FIGS. 7A and 8A show the first state where the valve body 12 opens the air flow path
  • FIGS. 7C and 8C show the valve body. 12 shows the 2nd state which obstruct
  • FIG.7 (B) and FIG.8 (B) show the intermediate state of a 1st state and a 2nd state.
  • valve body 12 when the valve rod 13 rotates, the valve body 12 starts to rotate from the first state in the direction indicated by the solid arrow in the drawing. 7B and 8B, the surface of the valve body 12 comes into contact with the contact portion 24 when the second state shown in FIGS. 7C and 8C is reached. The rotation of the valve body 12 is restricted.
  • the contact portion 24 is provided in the vicinity of the valve stem 13 that is the rotation shaft of the valve body 12, the region of the valve body 12 with which the contact portion 24 contacts is the other part of the valve body 12.
  • the rotation speed is slow compared to.
  • the collision energy when contacting the valve body 12 can be reduced, and as a result, the collision sound generated by the contact of the valve body 12 with the contact portion 14 is reduced. Can be small.
  • the contact portion 24 collides with the valve body 12 as the valve body 12 rotates, it is preferable that the contact portion 24 is fixed to the case 11 to such an extent that it can withstand the collision.
  • the contact portion 24 can be reliably fixed to the case by being fixed to the case via the pedestal 25. Further, by providing the contact portion 24 so as to protrude from the end portion of the base 25, the contact portion 24 can be reliably brought into contact with a target position in the vicinity of the rotation axis of the valve body 12.
  • FIG. 9 is a perspective view showing the overall configuration of the valve 30 according to the third embodiment
  • FIG. 10 is a view showing the valve body and the valve stem of FIG. 9 taken out.
  • 11 and 12 show the valve 30 and the valve rod shown in FIGS. 9 and 10, and the valve body, the valve rod, and the pedestal provided with the contact portion and the contact portion are taken out to rotate the valve body. It is the figure which showed the effect
  • a pedestal 35 is formed in the case 11 of the valve 30 so as to rise inside the case 11.
  • the basic configuration of the pedestal 35 is the same as that of the pedestal 25 of the second embodiment.
  • the pedestal 35 is structurally different from the pedestal 25 in that the contact portion 34 is not formed so as to protrude from the pedestal 35.
  • the valve body 32 is provided with a protruding portion 36 (36a to 36d). That is, the valve body 32 has a protruding portion 36 that protrudes from the plane of the valve body 32 in a region near the valve rod 13. The valve body 32 comes into contact with the contact portion 34 provided on the pedestal 35 at the protruding portion 36.
  • the projecting portion 36 abuts on the abutting portion 34, the projecting portion 36 is formed only in a region in the vicinity of the valve stem 13 as in the case where the abutting portion shown in the first and second embodiments is formed. However, it is not formed in a region away from the valve stem 13. That is, the protruding portion 36 is provided avoiding a portion where the rotational speed of the valve body 12 is fast. Further, the protrusion 36 is formed in a size sufficient to restrict the rotation of the valve body 12 at a position close to the valve rod 13 that is the position where the rotation speed of the valve body 12 is the slowest.
  • the protrusion part 36 is provided in total four each (two protrusion parts 36a and 36b, protrusion parts 36c and 36d) on the front and back of the valve body 32, this is only an example. In the embodiment of the present invention, the present invention is not limited to such a mode, and only one of the projecting portion 36 and the abutting portion 34 that abuts on the projecting portion 36 or two or three may be selected. It is possible to form or more than four.
  • FIGS. 11A and 12A show the first state in which the valve body 12 opens the air flow path
  • FIGS. 12 (C) shows a second state in which the valve body 12 blocks the air flow path
  • FIGS. 11 (B) and 12 (B) show an intermediate state between the first state and the second state.
  • valve element 32 when the valve rod 13 rotates, the valve element 32 starts to rotate from the first state in the direction indicated by the solid line arrow in the figure.
  • the protrusions 36a and 36b and the protrusions 36c and 36d are The rotation of the valve body 32 is regulated by contacting the contact portions 34a to 34d.
  • the contact portions 34a to 34d that contact the projecting portions 36a to 36d of the valve body 32 are provided in the vicinity of the valve rod 13 that is the rotating shaft of the valve body 32, so the contact portions 34a to 34d are provided.
  • the rotation speed of the projecting portions 36a to 36d that are in contact with each other is slower than that of the portion of the valve body 12 far from the valve stem 13.
  • the collision energy when the projecting portion 36 and the abutting portion 34 abut can be kept small. As a result, it is possible to reduce the collision sound generated by the contact of the valve body 32 with the contact portion 34.
  • the contact portion 34 can be reliably brought into contact with a target position near the rotation axis of the valve body 32. it can.
  • the present invention is not limited to the above-described embodiment, and includes, for example, the following aspects. That is, in the above-described embodiment, the shape of the valve case is cylindrical, and the shape of the valve body is also disc-like. However, the present invention is not limited to such an embodiment.
  • the valve may be formed in a cylindrical shape with a square cross section, and the valve body may be formed in a square shape in accordance with this.
  • the contact portion is formed only in the area near the rotation axis and not in the area farthest from the rotation axis. In the case where it is provided at the center, the two regions parallel to the rotation axis are the farthest regions. Therefore, in this case, the contact portion is not formed on two sides parallel to the rotation axis, but is formed at any position on the side in the direction perpendicular to the rotation axis.
  • a butterfly valve provided with a rotation shaft in the central part of the valve body has been shown.
  • the present invention is not limited to a butterfly valve, and a structure in which opening and closing is repeated by rotating the valve body. It can be used for other valve structures such as a catch valve.
  • the contact portion may be provided with a cushioning material so as to absorb the impact of contact between the valve body and the contact portion.
  • the present invention exhibits a sufficient effect for suppressing the collision noise between the valve body and the member that restricts the rotation of the valve body without providing a buffer material, the buffer material is provided at the contact portion. Thus, the effect of suppressing the collision noise is further enhanced.
  • Valve 11 Case 11a: Rotating support portion 11b: Deriving portion 12, 32: Valve body 13: Valve rod 13a, 13b: End portions 14, 14a, 14b, 24, 24a-24d, 34, 34a to 34d: contact portions 25, 25a, 25b, 35: pedestal 36, 36a to 36d: projecting portion l: axis O: center

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Lift Valve (AREA)
  • Exhaust Silencers (AREA)

Abstract

A valve (10) has a contact part (14) that comes in contact with a valve body (12) and restricts the rotation of the valve body (12) when the valve body (12) is switched from a first state to a second state. The contact part (14) is formed into the shape of a protuberance or a platform by a method such as welding to the inner wall of a case (11). The contact part (14) is provided so as to come in contact only with an area of the valve body (12) near a valve rod (13) which is a rotating shaft, and not come in contact with areas farther away from the valve rod (13) than the area near the valve rod (13).

Description

バルブvalve
　本発明は、排気熱回収器等の空気流路を開閉するバルブに関する。 The present invention relates to a valve for opening and closing an air flow path of an exhaust heat recovery device or the like.
　一般に、自動車の排気熱回収器などに用いられる排気系では、排気通路を開閉させるバルブを設け、排気圧力を制御することで、エンジンの燃焼室内により多量の空気が流入するようにし、またはエンジンの排気騒音を低減している。 In general, in an exhaust system used for an exhaust heat recovery device of an automobile, a valve for opening and closing an exhaust passage is provided, and by controlling the exhaust pressure, a large amount of air flows into the combustion chamber of the engine, or the engine Exhaust noise is reduced.
　このような排気系のバルブには、回転軸上に支持された板状の弁体を回転させて排気通路を開閉させるバタフライバルブやキャッチバルブを用いる場合がある。従来、これらのバルブを用いた場合、バルブの稼動による異音の発生を抑えることが検討されてきた。主な異音の発生原因としては、弁体のがたつきや振動によるもの、空気流による笛吹き現象によるもの、バルブ開閉時における弁体のケースへの衝突によるものなどがある。 For such an exhaust system valve, a butterfly valve or a catch valve that opens and closes an exhaust passage by rotating a plate-like valve body supported on a rotating shaft may be used. Conventionally, when these valves are used, it has been studied to suppress the generation of abnormal noise due to the operation of the valves. The main causes of abnormal noise are due to the shakiness and vibration of the valve body, the whistling phenomenon caused by air flow, and the collision of the valve body with the case when the valve is opened and closed.
　このうち、バルブ開閉時の衝突音を防止する取り組みとして以下の技術が提案されている。例えば、弁体がケースに当接する部分に弾性部材を設け、バルブの閉時に弁体がケースの内壁面に衝突する際に、衝撃を吸収することで衝突音の発生を抑える技術がある（例えば、特許文献１参照）。また、軸受け部分に金属メッシュからなる弾性部材を設けて、バルブの軸部に回動抵抗を与えることで閉時に弁体の回動を減速させ、衝突音を抑える技術がある（例えば、特許文献２参照）。 Of these, the following technologies have been proposed as efforts to prevent collision noise when opening and closing the valve. For example, there is a technology that suppresses the generation of collision noise by providing an elastic member at a portion where the valve body abuts the case and absorbing the impact when the valve body collides with the inner wall surface of the case when the valve is closed (for example, , See Patent Document 1). In addition, there is a technology that suppresses collision noise by providing an elastic member made of a metal mesh in the bearing portion and decelerating the rotation of the valve body when closed by applying a rotation resistance to the shaft portion of the valve (for example, Patent Documents) 2).
特開２００７－５６８２６号公報JP 2007-56826 A 特開２０１０－１６９０５９号公報JP 2010-169059 A
　しかしながら、上記従来の技術に見られるように、衝突音を抑制する手段として、弁体自体や弁体の回動軸に緩衝材などの別部材を設けた場合、構造が複雑となる。そのため、より簡易な構造により衝突音を抑制する手段の提案が望まれていた。 However, as seen in the above-described conventional technology, the structure is complicated when another member such as a cushioning material is provided on the valve body itself or the rotation shaft of the valve body as means for suppressing the collision noise. Therefore, there has been a demand for a means for suppressing collision noise with a simpler structure.
　本発明はこのような課題に鑑みてなされたものであり、その目的は、弁体や弁体の回動軸に別部材を設けなくても、弁体の開閉による衝突音を抑えることが可能なバルブを提供することにある。 The present invention has been made in view of such problems, and the object thereof is to suppress a collision sound caused by opening and closing of the valve body without providing a separate member on the valve body and the rotating shaft of the valve body. Is to provide a simple valve.
　上記課題を解決するために、本発明に係るバルブは、空気流路が形成されたケースと、前記空気流路の空気流れ方向に対して垂直な回転軸周りに回転することにより、前記空気流路を開放する第一状態と、前記空気流路を閉塞する第二状態とを切り換える弁体と、前記ケースに設けられ、前記弁体が前記第一状態から前記第二状態へ切り換わる際に、前記弁体に当接して前記弁体の回転を規制する当接部と、を備え、前記当接部は、前記弁体のうち前記回転軸の近傍の領域にのみ当接し、当該近傍の領域より前記回転軸から遠い領域には当接しないように設けられたことを特徴とする。 In order to solve the above-described problems, a valve according to the present invention includes a case in which an air flow path is formed and a rotation axis that is perpendicular to the air flow direction of the air flow path, thereby rotating the air flow. A valve body that switches between a first state that opens a path and a second state that closes the air flow path; and the case, wherein the valve body switches from the first state to the second state. A contact portion that contacts the valve body and restricts the rotation of the valve body, and the contact portion contacts only a region in the vicinity of the rotating shaft of the valve body, It is provided so that it may not contact | abut to the area | region far from the said rotating shaft from an area | region.
　本発明に係るバルブによれば、弁体の第二状態である閉じ際における弁体の回転を、当接部を弁体の回動軸近傍のみに当接させることにより規制する。これにより、弁体の回動軸近傍は、回動軸から離れた位置よりも回転速度が遅いため、弁体が当接部に当接した際に生じる衝突音を小さく抑えることができる。 According to the valve of the present invention, the rotation of the valve body when the valve body is closed, which is the second state of the valve body, is restricted by bringing the contact portion into contact with only the vicinity of the rotation shaft of the valve body. Thereby, since the rotation speed of the vicinity of the rotation axis of the valve body is slower than the position away from the rotation axis, it is possible to suppress a collision sound generated when the valve body comes into contact with the contact portion.
　他の態様として、前記ケースには、前記ケース内側に***した台座を備え、前記当接部は、前記台座における前記空気流れ方向端部に形成されたことを特徴とする。 As another aspect, the case includes a pedestal raised on the inside of the case, and the contact portion is formed at an end of the pedestal in the air flow direction.
　この態様では、当接部をケース内側に***した台座に設けることで、弁体の回転を規制するために弁体と衝突する当接部を、ケースに対して容易に固定することができるようになる。 In this aspect, the contact portion that collides with the valve body in order to restrict the rotation of the valve body can be easily fixed to the case by providing the contact portion on the pedestal raised on the inside of the case. become.
　他の態様として、前記弁体の回転軸の近傍の領域には、前記弁体から突出した突出部が設けられ、前記当接部は、前記弁体が前記第一状態から前記第二状態へ切り換わる際に、前記突出部と当接するように構成することが好ましい。 As another aspect, a projecting portion that protrudes from the valve body is provided in a region in the vicinity of the rotation axis of the valve body, and the contact portion is configured so that the valve body changes from the first state to the second state. When switching, it is preferable to be configured to abut against the protruding portion.
　この態様では、弁体に突出部を設け、この突出部と当接部とが当接するようにすることで、当接部を、弁体の回転軸近傍の所定位置で確実に当接させることができる。このように、当接部を弁体の回転速度の遅い位置に確実に当てて弁体の位置規制を行うことで、弁体が当接部に当接した際に生じる衝突音を小さく抑えることができる。 In this aspect, the valve body is provided with a protrusion, and the protrusion and the contact portion are in contact with each other, so that the contact portion is reliably contacted at a predetermined position near the rotation axis of the valve body. Can do. In this way, the position of the valve body is regulated by reliably applying the contact part to the position where the rotational speed of the valve body is slow, so that the collision noise generated when the valve body comes into contact with the contact part can be kept small. Can do.
　また、他の態様として、前記当接部は、前記空気流れ方向端部において、前記台座端部から突出した位置に設けられることも好ましい。 Also, as another aspect, it is preferable that the contact portion is provided at a position protruding from the pedestal end portion at the end portion in the air flow direction.
　この態様では、台座の端部の突出した位置に当接部を設けることで、当接部を、弁体の回転軸近傍の狙った位置に確実に当接させることができる。 In this aspect, by providing the contact portion at the protruding position of the end portion of the pedestal, the contact portion can be reliably brought into contact with the target position in the vicinity of the rotation axis of the valve element.
　本発明によれば、弁体や弁体の回動軸に別部材を設けなくても、弁体の開閉による衝突音を抑えることが可能なバルブを提供することができる。 According to the present invention, it is possible to provide a valve capable of suppressing a collision sound due to opening and closing of the valve body without providing a separate member on the valve body and the rotating shaft of the valve body.
本発明の第１実施形態に係るバルブ全体の構成を示す斜視図である。It is a perspective view which shows the structure of the whole valve | bulb which concerns on 1st Embodiment of this invention. 図１の弁体及び当接部を示す斜視図である。It is a perspective view which shows the valve body and contact part of FIG. 本発明の第１実施形態に係るバルブの作用を示す斜視図である。It is a perspective view which shows the effect | action of the valve | bulb which concerns on 1st Embodiment of this invention. 本発明の第１実施形態に係るバルブの作用を示す側面図である。It is a side view which shows the effect | action of the valve | bulb which concerns on 1st Embodiment of this invention. 本発明の第２実施形態に係るバルブの構成を示す斜視図である。It is a perspective view which shows the structure of the valve | bulb which concerns on 2nd Embodiment of this invention. 図１の台座を示す斜視図である。It is a perspective view which shows the base of FIG. 本発明の第２実施形態に係るバルブの作用を示す斜視図ある。It is a perspective view which shows the effect | action of the valve | bulb which concerns on 2nd Embodiment of this invention. 本発明の第２実施形態に係るバルブの作用を示す側面図である。It is a side view which shows the effect | action of the valve | bulb which concerns on 2nd Embodiment of this invention. 本発明の第３実施形態に係るバルブの構成を示す斜視図である。It is a perspective view which shows the structure of the valve | bulb which concerns on 3rd Embodiment of this invention. 図９の弁体を示す斜視図である。It is a perspective view which shows the valve body of FIG. 本発明の第３実施形態に係るバルブの作用を示す斜視図である。It is a perspective view which shows the effect | action of the valve | bulb which concerns on 3rd Embodiment of this invention. 本発明の第３実施形態に係るバルブの作用を示す側面図である。It is a side view which shows the effect | action of the valve | bulb which concerns on 3rd Embodiment of this invention.
　以下、図面を参照しながら本発明の実施形態について説明する。 Hereinafter, embodiments of the present invention will be described with reference to the drawings.
［１．第１の実施形態］
　図１は、第１の実施形態に係るバルブの構成を示す斜視図である。図２の（Ａ）は、図１から弁体及び弁棒並びに当接部を抜き出して表した斜視図である。また、図２の（Ｂ）は、（Ａ）を９０度回転させたバルブ開の状態を示す斜視図である。 [1. First Embodiment]
FIG. 1 is a perspective view showing a configuration of a valve according to the first embodiment. FIG. 2A is a perspective view of the valve body, the valve stem, and the contact portion extracted from FIG. FIG. 2B is a perspective view showing a state in which the valve is opened by rotating (A) by 90 degrees.
　図１に示すように、バルブ１０は、空気流路を形成するケース１１と、空気流路の開放と閉塞を行う弁体１２と、弁体１２を空気流路の空気流れ方向に対して垂直な回転軸周りに回転支持する弁棒１３と、を備える。 As shown in FIG. 1, the valve 10 includes a case 11 that forms an air flow path, a valve body 12 that opens and closes the air flow path, and the valve body 12 that is perpendicular to the air flow direction of the air flow path. And a valve rod 13 that rotates around a rotating shaft.
　ケース１１は円筒形状で、ケース１１には図に破線矢印で示す円筒の軸方向に空気流れが形成される。ケース１１は、弁棒１３を回動可能に支持するため、弁棒１３をケース１１の直径方向に貫通させている。ケース１１は、貫通させた弁棒１３の一方の端部１３ａを支持部として回動支持部１１ａにより支持する。したがって、回転支持部１１ａ側は端部１３ａを外部へ導出せず、閉じた状態になっている。一方、ケース１１は、他方の端部１３ｂを、回転させる部分として導出部１１ｂによりケース１１外へ導出する。導出された端部１３ｂは、図示しないモータ等の駆動源により回転駆動される。 The case 11 has a cylindrical shape, and an air flow is formed in the case 11 in the axial direction of the cylinder indicated by a broken line arrow in the figure. The case 11 penetrates the valve stem 13 in the diameter direction of the case 11 in order to rotatably support the valve stem 13. The case 11 is supported by the rotation support portion 11a with the one end portion 13a of the valve rod 13 passed through as a support portion. Therefore, the rotation support portion 11a side is in a closed state without leading the end portion 13a to the outside. On the other hand, the case 11 leads the other end 13b out of the case 11 by the lead-out part 11b as a part to be rotated. The derived end 13b is rotationally driven by a drive source such as a motor (not shown).
　弁体１２は、円板形状で、図２（Ａ）及び（Ｂ）に示すように、一枚の板状体を曲げ加工し、弁棒１３の片側面に接合して形成される。すなわち、図２（Ａ）の状態では、弁棒１３が露出した状態になり、これと反対の側では、図２（Ｂ）に示すように、弁棒１３を弁体１２が湾曲して覆うように構成されている。なお、弁板１２と弁棒１３との接合方法は、一例を示すに過ぎず、例えば、弁棒を弁板に貫通させて接合するなど他の接合方法によって構成したり、弁板と弁棒とを一体に成形したりするなど、他の方法によって構成することも可能である。 The valve body 12 has a disc shape, and is formed by bending one plate-like body and joining it to one side surface of the valve stem 13 as shown in FIGS. 2 (A) and 2 (B). That is, in the state of FIG. 2 (A), the valve rod 13 is exposed, and on the opposite side, as shown in FIG. 2 (B), the valve body 12 is curved and covers the valve rod 12. It is configured as follows. In addition, the joining method of the valve plate 12 and the valve stem 13 is merely an example, and may be configured by other joining methods such as joining the valve stem through the valve plate, It is also possible to form by other methods, such as integrally forming.
　弁体１２は、また、図１に破線矢印で示す空気流れを閉塞する第二状態（図２（Ａ）参照）と、空気流路を開放する第一状態（図２（Ｂ）参照）とを、弁棒１３の回転駆動により切り換えるように構成される。弁体１２は、ケース１１の内壁との間で回転に支障がない程度のクリアランスを設けたうえで、空気流路を閉塞するのに十分な外径で構成される。すなわち、弁体１２の直径は、ケース１１の内壁の直径とほぼ同等といってよい。 The valve body 12 is also in a second state (see FIG. 2 (A)) in which the air flow indicated by broken line arrows in FIG. 1 is closed, and a first state (see FIG. 2 (B)) in which the air flow path is opened. Are switched by the rotational drive of the valve stem 13. The valve body 12 is configured with an outer diameter sufficient to close the air flow path with a clearance that does not hinder rotation with the inner wall of the case 11. That is, the diameter of the valve body 12 may be substantially equal to the diameter of the inner wall of the case 11.
　以上のように、バルブ１０は、上述のケース１１、弁体１２及び弁棒１３により、空気流路の開放と閉塞を行うバタフライバルブを構成する。 As described above, the valve 10 constitutes a butterfly valve that opens and closes the air flow path by the case 11, the valve body 12, and the valve rod 13 described above.
　本実施形態のバルブ１０では、弁体１２が第一状態から第二状態へ切り換わる際に、弁体１２に当接して弁体１２の回転を規制する当接部１４を、ケース１１に固定して設けている。 In the valve 10 of the present embodiment, when the valve body 12 is switched from the first state to the second state, the contact portion 14 that contacts the valve body 12 and restricts the rotation of the valve body 12 is fixed to the case 11. Provided.
　当接部１４は、図１に示すように、ケース１１の内壁に対して溶接等により突起状または台状に形成される。当接部１４は、弁体１２のうち回転軸である弁棒１３の近傍の領域にのみ当接し、弁棒１３の近傍の領域より弁棒１３から遠い領域には当接しないように形成される。これは次の理由による。 As shown in FIG. 1, the contact portion 14 is formed in a protruding shape or a trapezoidal shape by welding or the like on the inner wall of the case 11. The abutment portion 14 is formed so as to abut only on a region of the valve body 12 in the vicinity of the valve stem 13 that is a rotating shaft, and not in contact with a region farther from the valve stem 13 than a region in the vicinity of the valve stem 13. The This is due to the following reason.
　すなわち、図２（Ａ）において、弁体１２の回転軸である、弁棒１３の軸ｌから距離が最も遠いのは、弁体１２の中心Ｏから軸ｌに対して垂直に上がった弁体１２の外周上の点Ｐ、又は中心Ｏから軸ｌに対して垂直に下りた弁体１２の外周上の点Ｐ´である。この点Ｐ又は点Ｐ´は回転軸から最も距離が遠いため、弁体１２が回転した場合、他の部分に比較して点Ｐ又は点Ｐ´において回転速度が最も速い。このような点Ｐ又は点Ｐ´は、これらの部分において部材を当接させて弁体１２の回転を規制した場合、衝突エネルギーは最も高く、衝突音も最も高いことになる。 That is, in FIG. 2 (A), the farthest distance from the axis l of the valve stem 13 that is the rotation axis of the valve element 12 is the valve element that has risen perpendicularly from the center O of the valve element 12 to the axis l. 12 is a point P on the outer periphery of 12 or a point P ′ on the outer periphery of the valve body 12 descending perpendicularly from the center O to the axis l. Since the point P or the point P ′ is the farthest from the rotation axis, when the valve body 12 rotates, the rotation speed is the fastest at the point P or the point P ′ as compared with other portions. Such a point P or point P ′ has the highest collision energy and the highest collision sound when the rotation of the valve body 12 is restricted by contacting a member at these portions.
　そこで、本実施形態の当接部１４は、ケース１１において、回転軸である弁棒１３の近傍の領域にのみ設けられ、弁棒１３の近傍の領域より弁棒１３から遠い領域には設けられないこととした。言い換えれば、当接部１４は、弁体１２の回転速度の速い部分を避けて、ケース１１に固定して設けられるものである。 Therefore, the contact portion 14 of the present embodiment is provided in the case 11 only in a region in the vicinity of the valve stem 13 that is the rotating shaft, and in a region farther from the valve stem 13 than the region in the vicinity of the valve stem 13. It was decided not to. In other words, the contact portion 14 is fixed to the case 11 while avoiding a portion where the valve body 12 has a high rotational speed.
　なお、図１に示す態様は、当接部１４の最適な実施形態として、当接部１４を、弁体１２の回転速度の最も遅い領域である弁棒１３に近接した位置に、弁体１２の回転を規制するのに十分な大きさで構成したものである。 In the embodiment shown in FIG. 1, as an optimal embodiment of the abutting portion 14, the abutting portion 14 is located at a position close to the valve stem 13, which is the slowest rotation speed of the valve body 12. It is configured with a size sufficient to regulate the rotation.
　上述のように、当接部１４は、点Ｐ又は点Ｐ´を避けて設けることにより、本発明の効果は奏するのであるから、本発明の実施形態としては、当接部１４を、点Ｐ又は点Ｐ´に設けない態様であれば、図１に示す態様に限られない。例えば、当接部１４を、図２（Ａ）において中心Ｏから軸ｌに対して４５度内の範囲に設けた場合には、本発明の十分な効果を奏するものである。 As described above, since the contact portion 14 is provided by avoiding the point P or the point P ′, the effect of the present invention can be obtained. Or if it is an aspect which is not provided in point P ', it will not be restricted to the aspect shown in FIG. For example, when the contact portion 14 is provided within a range of 45 degrees with respect to the axis 1 from the center O in FIG. 2A, a sufficient effect of the present invention is exhibited.
　また、当接部１４は、図１に１４ａ及び１４ｂとして示すように、ケース１１に計２つにより構成されている。すなわち、図２（Ａ）に示す弁体１２の閉塞位置において、図中実線矢印で示す弁体１２の回動方向（図２（Ｂ）参照）に対向する側であって、弁体１２の回転を停止させる側に形成される。 Further, as shown in FIG. 1 as 14a and 14b, the abutting portion 14 is constituted by a total of two in the case 11. That is, at the closed position of the valve body 12 shown in FIG. 2 (A), on the side facing the rotational direction of the valve body 12 (see FIG. 2 (B)) indicated by the solid line arrow in FIG. It is formed on the side that stops rotation.
　より具体的には、弁体１２の回転を、弁棒１３の端部１３ａ側から見た場合に、空気流路が左側から右側へ形成され、弁体が弁体１２の開放状態である図２（Ｂ）の状態から閉塞状態である図２（Ａ）の状態へ向かって時計回り（右周り）に回転したとする。この場合、当接部１４ａは、弁棒１３の図中下側かつ空気流路の上流側に設けられる。また、当接部１４ｂは、弁棒１３の図中上側かつ空気流路の下流側に設けられる。 More specifically, when the rotation of the valve body 12 is viewed from the end portion 13a side of the valve rod 13, the air flow path is formed from the left side to the right side, and the valve body is in the open state of the valve body 12. It is assumed that the rotation is clockwise (clockwise) from the state 2 (B) toward the closed state of FIG. 2 (A). In this case, the contact portion 14a is provided on the lower side of the valve rod 13 in the figure and on the upstream side of the air flow path. The abutting portion 14b is provided on the upper side of the valve rod 13 in the drawing and on the downstream side of the air flow path.
　なお、このような当接部１４をケース１１に対して一対設けた構成は、一例に過ぎない。本発明の実施形態としては、当接部１４は、弁体１２の回動方向（図２（Ｂ）参照）に対向する側のいずれか一方に設けていれば十分である。また、これとは逆に、本実施形態のような一対に限らず、片側に複数個設け、全体として二対あるいは三対設けて構成することも可能である。 In addition, the structure which provided such a contact part 14 with respect to the case 11 as such is only an example. As an embodiment of the present invention, it is sufficient that the contact portion 14 is provided on either one of the sides facing the rotation direction of the valve body 12 (see FIG. 2B). On the other hand, the present invention is not limited to a pair as in the present embodiment, and a plurality of pairs may be provided on one side, and two or three pairs may be provided as a whole.
　以上のような構成からなるバルブ１０の作用について、図３及び図４を用いて説明する。図３及び図４は、図１に示したバルブ１０の構成のうち、弁体１２及び弁棒１３並びに当接部１４を取り出して、弁体１２の回転動作と当接部１４の作用について示した図である。図３は斜視図であり、図４は側面図である。また、図３（Ａ）及び図４（Ａ）は弁体１２が空気流路を開放した第一状態を示し、図３（Ｃ）及び図４（Ｃ）は弁体１２が空気流路を閉塞した第二状態を示し、図３（Ｂ）及び図４（Ｂ）は第一状態と第二状態の中間の状態を示す。 The operation of the valve 10 configured as described above will be described with reference to FIGS. 3 and 4 show the rotational operation of the valve body 12 and the action of the contact portion 14 by taking out the valve body 12, the valve rod 13, and the contact portion 14 from the configuration of the valve 10 shown in FIG. It is a figure. 3 is a perspective view, and FIG. 4 is a side view. 3A and 4A show a first state in which the valve body 12 opens the air flow path, and FIGS. 3C and 4C show the valve body 12 in the air flow path. FIG. 3B and FIG. 4B show a state intermediate between the first state and the second state.
　図３（Ａ）及び図４（Ａ）に示すように、弁棒１３が図示しない駆動源により回転することにより、弁体１２が第一状態から図中に実線矢印に示す方向に回転をはじめる。図３（Ｂ）及び図４（Ｂ）の状態を経て、図３（Ｃ）及び図４（Ｃ）の第二状態に至った段階で、弁体１２の面が当接部１４ａ及び１４ｂに当接して、弁体１２の回転が規制される。なお、弁体１２が閉塞した第二状態から開放した第一状態へは、弁体１２は、図３（Ｃ）から図３（Ａ）又は図４（Ｃ）から（Ａ）に向かって逆回転して変位する。 As shown in FIGS. 3A and 4A, when the valve rod 13 is rotated by a driving source (not shown), the valve body 12 starts to rotate from the first state in the direction indicated by the solid line arrow in the drawing. . The surface of the valve body 12 is brought into contact with the contact portions 14a and 14b at the stage where the second state shown in FIGS. 3C and 4C is reached after the state shown in FIGS. The rotation of the valve body 12 is restricted by contact. Note that, from the second state where the valve body 12 is closed to the first state where the valve body 12 is opened, the valve body 12 is reversed from FIG. 3 (C) to FIG. 3 (A) or FIG. 4 (C) to (A). Rotates and displaces.
　以上のような本実施形態のバルブ１０では、当接部１４ａ及び１４ｂは、ケース１１の内壁において、弁体１２の回転軸である弁棒１３の近傍に設けられているので、当接部１４ａ及び１４ｂが当接する弁体１２の領域の回転速度は、弁体１２の弁棒１３から遠い部分に比べて遅い。したがって、当接部１４ａ及び１４ｂが、弁体１２に当接した際の衝突エネルギーを小さく抑えることができる。これにより、バルブ１０において、弁体１２の当接部１４への当接により生じる衝突音を小さくすることができる。 In the valve 10 of the present embodiment as described above, the contact portions 14a and 14b are provided on the inner wall of the case 11 in the vicinity of the valve rod 13 that is the rotation shaft of the valve body 12, and therefore the contact portion 14a. And the rotational speed of the area | region of the valve body 12 which 14b contact | abuts is slow compared with the part far from the valve rod 13 of the valve body 12. FIG. Therefore, the collision energy when the contact portions 14a and 14b contact the valve body 12 can be reduced. Thereby, in the valve 10, it is possible to reduce a collision sound caused by the contact of the valve body 12 with the contact portion 14.
　このように、本実施形態のバルブによれば、弁体や弁体の回動軸に別部材を設けなくても、弁体の開閉による衝突音を抑えることが可能になる。 As described above, according to the valve of the present embodiment, it is possible to suppress a collision sound due to opening and closing of the valve body without providing a separate member on the valve body and the rotating shaft of the valve body.
［２．第２の実施形態］
　続いて、第２の実施形態に係るバルブについて説明する。第２の実施形態は、第１の実施形態におけるバルブの構成のうち、当接部の構成に変更を加えたものである。なお、第１の実施形態と同様の構成には同一の符号を付し、適宜説明を省略する。 [2. Second Embodiment]
Next, the valve according to the second embodiment will be described. In the second embodiment, a change is made to the configuration of the contact portion in the configuration of the valve in the first embodiment. In addition, the same code | symbol is attached | subjected to the structure similar to 1st Embodiment, and description is abbreviate | omitted suitably.
　図５及び図６は、第２実施形態に係るバルブ２０の構成を示す斜視図であり、図７及び図８は、図５及び図６に示したバルブ２０の構成のうち、弁体及び弁棒並びに当接部及び当接部を備えた台座を取り出して、弁体の回転動作と当接部の作用について示す図である。 5 and 6 are perspective views showing the configuration of the valve 20 according to the second embodiment, and FIGS. 7 and 8 show the valve body and the valve among the configurations of the valve 20 shown in FIGS. 5 and 6. It is a figure which takes out the base provided with the stick | rod, the contact part, and the contact part, and shows the rotation operation | movement of a valve body, and the effect | action of a contact part.
　図５に示すように、バルブ２０のケース１１には、ケース１１の内側に***した台座２５（２５ａ，２５ｂ）が設けられている。台座２５ａ及び２５ｂは、ケース１１の内壁に対して溶接等により接合されている。図６に示すように、台座２５ａ及び２５ｂは、それぞれ円筒を直径方向に割った断面半円の半円筒形状をなす。なお、ここでいう半円とは、真半円のみではなく、楕半円も含む趣旨であり、ケース１１の形状や設計に応じて、適宜変更可能なものである。 As shown in FIG. 5, the case 11 of the valve 20 is provided with a pedestal 25 (25a, 25b) raised on the inside of the case 11. The bases 25a and 25b are joined to the inner wall of the case 11 by welding or the like. As shown in FIG. 6, the pedestals 25a and 25b each have a semi-cylindrical shape with a semicircular cross section obtained by dividing the cylinder in the diameter direction. The semicircle here means not only a true semicircle but also an elliptical semicircle, and can be appropriately changed according to the shape and design of the case 11.
　続いて、台座２５ａ及び２５ｂの位置関係について説明する。図５から図８に示すように、弁体１２の閉塞位置において、図中に実線矢印で示す弁体１２の回動方向に対向する側であって、弁体１２の回転を停止させる側にそれぞれ形成される。具体的には、図８に示すように、空気流れ方向が左から右へ形成され、弁体１２が開放状態図８（Ａ）から閉塞状態図８（Ｃ）に向かって時計回り（右周り）に回転したとする。この場合、台座２５ａが、弁棒１３の図中下側かつ空気流路の上流側に形成され、台座２５ｂが、弁棒１３の図中上側かつ空気流路の下流側に形成される。 Subsequently, the positional relationship between the bases 25a and 25b will be described. As shown in FIGS. 5 to 8, in the closed position of the valve body 12, on the side facing the rotation direction of the valve body 12 indicated by the solid line arrow in the figure, on the side where the rotation of the valve body 12 is stopped. Each is formed. Specifically, as shown in FIG. 8, the air flow direction is formed from left to right, and the valve body 12 is rotated clockwise (clockwise) from the open state FIG. 8 (A) to the closed state FIG. 8 (C). ). In this case, the pedestal 25a is formed on the lower side of the valve rod 13 in the drawing and on the upstream side of the air flow path, and the pedestal 25b is formed on the upper side of the valve rod 13 in the drawing and on the downstream side of the air flow passage.
　そして、当接部２４は、台座２５ａ及び２５ｂにおいて、弁体１２の閉塞状態（図７（Ｃ）、図８（Ｃ））において弁体１２に当接する位置である空気流れ方向端部に設けられる。 The contact portion 24 is provided at the ends of the pedestals 25a and 25b at the end in the air flow direction, which is a position where the contact portion 24 is in contact with the valve body 12 in the closed state of the valve body 12 (FIGS. 7C and 8C). It is done.
　当接部２４が設けられる位置は、第１の実施形態の当接部１４と同様である。すなわち、当接部２４は、弁棒１３の近傍の領域にのみ形成され、弁棒１３から離れた領域には形成されない。当接部２４は、弁体１２の回転速度の速い部分を避けて設けられる。 The position where the contact part 24 is provided is the same as that of the contact part 14 of the first embodiment. That is, the contact portion 24 is formed only in a region near the valve stem 13 and is not formed in a region away from the valve stem 13. The contact portion 24 is provided to avoid a portion where the rotational speed of the valve body 12 is fast.
　また、当接部２４は、台座２５の空気流れ方向端部において突出して形成されている。すなわち、当接部２４は、弁体１２の回転速度の遅い位置である弁棒１３に近接した位置に確実に当接するように突出して形成されるとともに、弁体１２の回転を規制するのに十分な大きさ（端部の面積）で構成されている。 Further, the contact portion 24 is formed so as to protrude from the end of the base 25 in the air flow direction. That is, the abutment portion 24 is formed to protrude so as to abut against a position close to the valve stem 13 which is a position where the rotation speed of the valve body 12 is slow, and to restrict the rotation of the valve body 12. It is configured with a sufficient size (end area).
　なお、当接部２４は、台座２５ａ，２５ｂにそれぞれ２つずつ、計４つ（当接部２４ａ，２４ｂ、当接部２４ｃ，２４ｄ）設けられているが、これは一実施形態に過ぎない。本発明は、このような態様に限られず、当接部２４はいずれか一つのみを設けられれば良く、その他、２又は３つを選択して設けて構成することも、４つ以上設けて構成することも可能である。 Note that a total of four contact portions 24 (two contact portions 24a and 24b and contact portions 24c and 24d) are provided on each of the pedestals 25a and 25b, but this is only an embodiment. . The present invention is not limited to such an embodiment, and only one of the contact portions 24 may be provided. In addition, two or three may be selected and provided, and four or more may be provided. It is also possible to configure.
　以上のような構成からなるバルブ２０の作用について、図７及び図８を用いて説明する。図３及び図４と同様、図７（Ａ）及び図８（Ａ）は弁体１２が空気流路を開放した第一状態を示し、図７（Ｃ）及び図８（Ｃ）は弁体１２が空気流路を閉塞した第二状態を示し、図７（Ｂ）及び図８（Ｂ）は第一状態と第二状態の中間の状態を示す。 The operation of the valve 20 configured as above will be described with reference to FIGS. 7A and 8A show the first state where the valve body 12 opens the air flow path, and FIGS. 7C and 8C show the valve body. 12 shows the 2nd state which obstruct | occluded the air flow path, FIG.7 (B) and FIG.8 (B) show the intermediate state of a 1st state and a 2nd state.
　図７（Ａ）及び図８（Ａ）に示すように、弁棒１３が回転することにより、弁体１２が第一状態から図中に実線矢印に示す方向に回転をはじめる。図７（Ｂ）及び図８（Ｂ）の状態を経て、図７（Ｃ）及び図８（Ｃ）の第二状態至った段階で、弁体１２の面が当接部２４に当接して、弁体１２の回転が規制される。 As shown in FIGS. 7A and 8A, when the valve rod 13 rotates, the valve body 12 starts to rotate from the first state in the direction indicated by the solid arrow in the drawing. 7B and 8B, the surface of the valve body 12 comes into contact with the contact portion 24 when the second state shown in FIGS. 7C and 8C is reached. The rotation of the valve body 12 is restricted.
　このとき、当接部２４は、弁体１２の回転軸である弁棒１３の近傍に設けられているので、当接部２４が当接する弁体１２の領域は、弁体１２の他の部分に比較して回転速度が遅い。このように構成される当接部２４では、弁体１２に当接した際の衝突エネルギーを小さく抑えることができ、結果として、弁体１２の当接部１４への当接により生じる衝突音を小さくすることができる。 At this time, since the contact portion 24 is provided in the vicinity of the valve stem 13 that is the rotation shaft of the valve body 12, the region of the valve body 12 with which the contact portion 24 contacts is the other part of the valve body 12. The rotation speed is slow compared to. In the contact portion 24 configured in this manner, the collision energy when contacting the valve body 12 can be reduced, and as a result, the collision sound generated by the contact of the valve body 12 with the contact portion 14 is reduced. Can be small.
　また、当接部２４は、弁体１２の回転に伴って、弁体１２と衝突するから、衝突に耐えうる程度にケース１１に固定されているのが好ましい。この点、本実施形態では、台座２５を介してケースに固定することで、当接部２４のケースへ確実に固定することができる。また、当接部２４を台座２５の端部から突出して設けたことで、当接部２４を、弁体１２の回転軸近傍の狙った位置に確実に当接させることができる。 Further, since the contact portion 24 collides with the valve body 12 as the valve body 12 rotates, it is preferable that the contact portion 24 is fixed to the case 11 to such an extent that it can withstand the collision. In this regard, in the present embodiment, the contact portion 24 can be reliably fixed to the case by being fixed to the case via the pedestal 25. Further, by providing the contact portion 24 so as to protrude from the end portion of the base 25, the contact portion 24 can be reliably brought into contact with a target position in the vicinity of the rotation axis of the valve body 12.
［３．第３の実施形態］
　続いて、第３の実施形態に係るバルブについて説明する。第３の実施形態は、第１及び第２の実施形態における当接部及び弁体の構成に変更を加えたものである。なお、第１及び第２の実施形態と同様の構成には同一の符号を付し、適宜説明を省略する。 [3. Third Embodiment]
Subsequently, a valve according to a third embodiment will be described. In the third embodiment, the configurations of the contact portion and the valve body in the first and second embodiments are changed. In addition, the same code | symbol is attached | subjected to the structure similar to 1st and 2nd embodiment, and description is abbreviate | omitted suitably.
　図９は、第３実施形態に係るバルブ３０の全体構成を示す斜視図であり、図１０は、図９の弁体及び弁棒を取り出して示した図である。また、図１１及び図１２は、図９及び図１０に示したバルブ３０の構成のうち、弁体及び弁棒並びに当接部及び当接部を備えた台座を取り出して、弁体の回転動作と当接部の作用を示した図である。 FIG. 9 is a perspective view showing the overall configuration of the valve 30 according to the third embodiment, and FIG. 10 is a view showing the valve body and the valve stem of FIG. 9 taken out. 11 and 12 show the valve 30 and the valve rod shown in FIGS. 9 and 10, and the valve body, the valve rod, and the pedestal provided with the contact portion and the contact portion are taken out to rotate the valve body. It is the figure which showed the effect | action of a contact part.
　図９及び図１０に示すように、バルブ３０のケース１１には、ケース１１の内側に***した台座３５が形成される。この台座３５の基本的な構成は、第２の実施形態の台座２５と同様である。台座３５が台座２５と構成上異なるのは、当接部３４を台座３５から突出して形成していない点である。 As shown in FIGS. 9 and 10, a pedestal 35 is formed in the case 11 of the valve 30 so as to rise inside the case 11. The basic configuration of the pedestal 35 is the same as that of the pedestal 25 of the second embodiment. The pedestal 35 is structurally different from the pedestal 25 in that the contact portion 34 is not formed so as to protrude from the pedestal 35.
　一方で、本実施形態では、弁体３２に突出部３６（３６ａ～３６ｄ）を設けて構成している。すなわち、弁体３２は、弁棒１３の近傍の領域に、弁体３２の平面から突出した突出部３６を有する。そして、弁体３２は、この突出部３６において、台座３５に設けられた当接部３４と当接する。 On the other hand, in the present embodiment, the valve body 32 is provided with a protruding portion 36 (36a to 36d). That is, the valve body 32 has a protruding portion 36 that protrudes from the plane of the valve body 32 in a region near the valve rod 13. The valve body 32 comes into contact with the contact portion 34 provided on the pedestal 35 at the protruding portion 36.
　上述のように、突出部３６は、当接部３４と当接するため、第１及び第２の実施形態で示した当接部を形成したのと同様、弁棒１３の近傍の領域にのみ形成され、弁棒１３から離れた領域には形成されない。すなわち、突出部３６は、弁体１２の回転速度の速い部分を避けて設けられる。また、突出部３６は、弁体１２の回転速度の最も遅い位置である弁棒１３に近接する位置に、弁体１２の回転を規制するのに十分な大きさで形成される。 As described above, since the projecting portion 36 abuts on the abutting portion 34, the projecting portion 36 is formed only in a region in the vicinity of the valve stem 13 as in the case where the abutting portion shown in the first and second embodiments is formed. However, it is not formed in a region away from the valve stem 13. That is, the protruding portion 36 is provided avoiding a portion where the rotational speed of the valve body 12 is fast. Further, the protrusion 36 is formed in a size sufficient to restrict the rotation of the valve body 12 at a position close to the valve rod 13 that is the position where the rotation speed of the valve body 12 is the slowest.
　なお、突出部３６は、弁体３２の表裏にそれぞれ２つずつ、計４つ（突出部３６ａ，３６ｂ、突出部３６ｃ，３６ｄ）設けられているが、これは一例に過ぎない。本発明の実施形態では、このような態様に限られず、突出部３６及びこれに当接する当接部３４を、いずれか一つのみを形成してもよいし、２又は３つを選択して形成すること、または、４つよりも多く形成することも可能である。 In addition, although the protrusion part 36 is provided in total four each (two protrusion parts 36a and 36b, protrusion parts 36c and 36d) on the front and back of the valve body 32, this is only an example. In the embodiment of the present invention, the present invention is not limited to such a mode, and only one of the projecting portion 36 and the abutting portion 34 that abuts on the projecting portion 36 or two or three may be selected. It is possible to form or more than four.
　以上のような構成からなるバルブ３０の作用について、図１１及び図１２を用いて説明する。図３及び図４、又は図７及び図８と同様、図１１（Ａ）及び図１２（Ａ）は弁体１２が空気流路を開放した第一状態を示し、図１１（Ｃ）及び図１２（Ｃ）は弁体１２が空気流路を閉塞した第二状態を示し、図１１（Ｂ）及び図１２（Ｂ）は第一状態と第二状態の中間の状態を示す。 The operation of the valve 30 configured as described above will be described with reference to FIGS. Similar to FIGS. 3 and 4, or FIGS. 7 and 8, FIGS. 11A and 12A show the first state in which the valve body 12 opens the air flow path, and FIGS. 12 (C) shows a second state in which the valve body 12 blocks the air flow path, and FIGS. 11 (B) and 12 (B) show an intermediate state between the first state and the second state.
　図１１（Ａ）及び図１２（Ａ）に示すように、弁棒１３が回転することにより、弁体３２が第一状態から図中の実線矢印で示す方向に回転をはじめる。図１１（Ｂ）及び図１２（Ｂ）の状態を経て、図１１（Ｃ）及び図１２（Ｃ）の第二状態に至った段階で、突出部３６ａ，３６ｂ及び突出部３６ｃ，３６ｄが、当接部３４ａ～３４ｄにそれぞれ当接して、弁体３２の回転が規制される。 As shown in FIGS. 11 (A) and 12 (A), when the valve rod 13 rotates, the valve element 32 starts to rotate from the first state in the direction indicated by the solid line arrow in the figure. At the stage of reaching the second state of FIG. 11C and FIG. 12C through the state of FIG. 11B and FIG. 12B, the protrusions 36a and 36b and the protrusions 36c and 36d are The rotation of the valve body 32 is regulated by contacting the contact portions 34a to 34d.
　このとき、弁体３２の突出部３６ａ～３６ｄに当接する当接部３４ａ～３４ｄは、弁体３２の回転軸である弁棒１３の近傍に設けられているので、当接部３４ａ～３４ｄが当接する突出部３６ａ～３６ｄの領域の回転速度は、弁体１２の弁棒１３から遠い部分に比べて遅い。このような本実施形態のバルブ３０では、突出部３６と当接部３４とが当接した際の衝突エネルギーを小さく抑えることができる。結果として、弁体３２の当接部３４への当接により生じる衝突音を小さくすることができる。 At this time, the contact portions 34a to 34d that contact the projecting portions 36a to 36d of the valve body 32 are provided in the vicinity of the valve rod 13 that is the rotating shaft of the valve body 32, so the contact portions 34a to 34d are provided. The rotation speed of the projecting portions 36a to 36d that are in contact with each other is slower than that of the portion of the valve body 12 far from the valve stem 13. In such a valve 30 of this embodiment, the collision energy when the projecting portion 36 and the abutting portion 34 abut can be kept small. As a result, it is possible to reduce the collision sound generated by the contact of the valve body 32 with the contact portion 34.
　また、本実施形態のバルブ３０では、弁体３２に突出した突出部３６を形成したことで、当接部３４を、弁体３２の回転軸近傍の狙った位置に確実に当接させることができる。 Further, in the valve 30 of the present embodiment, since the protruding portion 36 that protrudes from the valve body 32 is formed, the contact portion 34 can be reliably brought into contact with a target position near the rotation axis of the valve body 32. it can.
［４．他の実施形態］
　本発明は、上記の実施形態に限定されるものではなく、例えば、以下のような態様も包含する。すなわち、上記実施形態において、バルブのケースの形状をいずれも円筒形とし、弁体の形状もそれに合わせて円板状にしている。しかしながら、本発明はこのような態様に限定されず、例えばバルブを断面方形の筒状で形成し、これに合わせて弁体を方形にして形成することも可能である。 [4. Other Embodiments]
The present invention is not limited to the above-described embodiment, and includes, for example, the following aspects. That is, in the above-described embodiment, the shape of the valve case is cylindrical, and the shape of the valve body is also disc-like. However, the present invention is not limited to such an embodiment. For example, the valve may be formed in a cylindrical shape with a square cross section, and the valve body may be formed in a square shape in accordance with this.
　なお、弁体を方形で構成する場合には、当接部は、回転軸近傍の領域のみに形成し、回転軸から最も距離が遠い領域には形成しないから、回転軸を方形の縦横いずれかの中心に設けた場合には、回転軸と平行な２辺上は、もっとも遠い領域となる。したがって、この場合、当接部は、回転軸と平行な２辺上には形成されず、回転軸と垂直な方向の辺上のいずれかの位置に形成されることになる。 When the valve body is formed in a square shape, the contact portion is formed only in the area near the rotation axis and not in the area farthest from the rotation axis. In the case where it is provided at the center, the two regions parallel to the rotation axis are the farthest regions. Therefore, in this case, the contact portion is not formed on two sides parallel to the rotation axis, but is formed at any position on the side in the direction perpendicular to the rotation axis.
　また、上記実施形態では、弁体の中心部分に回転軸を設けたバタフライバルブの例を示したが、本発明は、バタフライバルブに限らず、弁体を回転させて開放と閉塞を繰り返す構造を有するキャッチバルブなど、他のバルブ構造に用いることも可能である。 In the above embodiment, an example of a butterfly valve provided with a rotation shaft in the central part of the valve body has been shown. However, the present invention is not limited to a butterfly valve, and a structure in which opening and closing is repeated by rotating the valve body. It can be used for other valve structures such as a catch valve.
　上記実施形態における当接部には、緩衝材を設け、弁体と当接部との当たる衝撃を吸収させることもできる。本発明は、緩衝材を設けなくても、弁体と弁体の回転を規制する部材との衝突音の抑制に十分な効果を発揮するものであるが、当接部に緩衝材を設けることにより、衝突音抑制の効果はさらに高まる。 In the above-described embodiment, the contact portion may be provided with a cushioning material so as to absorb the impact of contact between the valve body and the contact portion. Although the present invention exhibits a sufficient effect for suppressing the collision noise between the valve body and the member that restricts the rotation of the valve body without providing a buffer material, the buffer material is provided at the contact portion. Thus, the effect of suppressing the collision noise is further enhanced.
１０，２０，３０：バルブ
１１：ケース
１１ａ：回動支持部
１１ｂ：導出部
１２，３２：弁体
１３：弁棒
１３ａ，１３ｂ：端部
１４，１４ａ，１４ｂ，２４，２４ａ～２４ｄ，３４，３４ａ～３４ｄ：当接部
２５，２５ａ，２５ｂ，３５：台座
３６，３６ａ～３６ｄ：突出部
ｌ：軸
Ｏ：中心 10, 20, 30: Valve 11: Case 11a: Rotating support portion 11b: Deriving portion 12, 32: Valve body 13: Valve rod 13a, 13b: End portions 14, 14a, 14b, 24, 24a-24d, 34, 34a to 34d: contact portions 25, 25a, 25b, 35: pedestal 36, 36a to 36d: projecting portion l: axis O: center

Claims (4)

  1. 　空気流路が形成されたケースと、
    　前記空気流路の空気流れ方向に対して垂直な回転軸周りに回転することにより、前記空気流路を開放する第一状態と、前記空気流路を閉塞する第二状態とを切り換える弁体と、
    　前記ケースに設けられ、前記弁体が前記第一状態から前記第二状態へ切り換わる際に、前記弁体に当接して前記弁体の回転を規制する当接部と、
    を備え、
    　前記当接部は、前記弁体のうち前記回転軸の近傍の領域にのみ当接し、当該近傍の領域より前記回転軸から遠い領域には当接しないように設けられたことを特徴とするバルブ。     A case in which an air flow path is formed;
    A valve body for switching between a first state in which the air flow path is opened and a second state in which the air flow path is closed by rotating around a rotation axis perpendicular to the air flow direction of the air flow path; ,
    A contact portion that is provided in the case and contacts the valve body to restrict the rotation of the valve body when the valve body switches from the first state to the second state;
    With
    The contact portion is provided so as to contact only a region in the vicinity of the rotating shaft of the valve body and not to contact a region farther from the rotating shaft than the region in the vicinity. .
  2. 　前記ケースには、前記ケース内側に***した台座を備え、
    　前記当接部は、前記台座における前記空気流れ方向端部に形成されたことを特徴とする請求項１記載のバルブ。     The case includes a pedestal raised on the inside of the case,
    The valve according to claim 1, wherein the contact portion is formed at an end portion of the pedestal in the air flow direction.
  3. 　前記弁体の回転軸の近傍の領域には、前記弁体から突出した突出部が設けられ、
    　前記当接部は、前記弁体が前記第一状態から前記第二状態へ切り換わる際に、前記突出部と当接することを特徴とする請求項２記載のバルブ。     In a region in the vicinity of the rotation axis of the valve body, a protruding portion protruding from the valve body is provided,
    The valve according to claim 2, wherein the abutting portion abuts on the protrusion when the valve body is switched from the first state to the second state.
  4. 　前記当接部は、前記空気流れ方向端部において、前記台座端部から突出した位置に設けられることを特徴とする請求項２記載のバルブ。 The valve according to claim 2, wherein the contact portion is provided at a position protruding from the pedestal end portion at the end portion in the air flow direction.
PCT/JP2014/083521 2014-01-21 2014-12-18 Valve WO2015111334A1 (en)

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FR3041692A1 (en) * 2015-09-30 2017-03-31 Faurecia Systemes D'echappement EXHAUST LINE ELEMENT COMPRISING A VALVE WITH REPORTED BUTTONS
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US10961896B2 (en) * 2016-11-14 2021-03-30 Eberspächer Exhaust Technology GmbH & Co. KG Method for manufacturing a flap carrier for an exhaust gas flap

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