WO2017077816A1 - シールリング - Google Patents
シールリング Download PDFInfo
- Publication number
- WO2017077816A1 WO2017077816A1 PCT/JP2016/080053 JP2016080053W WO2017077816A1 WO 2017077816 A1 WO2017077816 A1 WO 2017077816A1 JP 2016080053 W JP2016080053 W JP 2016080053W WO 2017077816 A1 WO2017077816 A1 WO 2017077816A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- seal ring
- joint
- circumferential direction
- thickness direction
- plate thickness
- Prior art date
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16J—PISTONS; CYLINDERS; SEALINGS
- F16J9/00—Piston-rings, e.g. non-metallic piston-rings, seats therefor; Ring sealings of similar construction
- F16J9/12—Details
- F16J9/14—Joint-closures
- F16J9/16—Joint-closures obtained by stacking of rings
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M26/00—Engine-pertinent apparatus for adding exhaust gases to combustion-air, main fuel or fuel-air mixture, e.g. by exhaust gas recirculation [EGR] systems
- F02M26/65—Constructional details of EGR valves
- F02M26/70—Flap valves; Rotary valves; Sliding valves; Resilient valves
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M26/00—Engine-pertinent apparatus for adding exhaust gases to combustion-air, main fuel or fuel-air mixture, e.g. by exhaust gas recirculation [EGR] systems
- F02M26/65—Constructional details of EGR valves
- F02M26/66—Lift valves, e.g. poppet valves
- F02M26/67—Pintles; Spindles; Springs; Bearings; Sealings; Connections to actuators
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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
- F16J—PISTONS; CYLINDERS; SEALINGS
- F16J15/00—Sealings
- F16J15/16—Sealings between relatively-moving surfaces
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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
- F16J—PISTONS; CYLINDERS; SEALINGS
- F16J15/00—Sealings
- F16J15/16—Sealings between relatively-moving surfaces
- F16J15/32—Sealings between relatively-moving surfaces with elastic sealings, e.g. O-rings
- F16J15/3268—Mounting of sealing rings
- F16J15/3272—Mounting of sealing rings the rings having a break or opening, e.g. to enable mounting on a shaft otherwise than from a shaft end
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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
- F16J—PISTONS; CYLINDERS; SEALINGS
- F16J9/00—Piston-rings, e.g. non-metallic piston-rings, seats therefor; Ring sealings of similar construction
- F16J9/12—Details
- F16J9/14—Joint-closures
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K1/00—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
- F16K1/16—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
- F16K1/224—Details of bearings for the axis of rotation
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K1/00—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
- F16K1/16—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
- F16K1/226—Shaping or arrangements of the sealing
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K1/00—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
- F16K1/16—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
- F16K1/226—Shaping or arrangements of the sealing
- F16K1/2261—Shaping or arrangements of the sealing the sealing being arranged on the valve member
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K1/00—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
- F16K1/16—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
- F16K1/226—Shaping or arrangements of the sealing
- F16K1/2268—Sealing means for the axis of rotation
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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
- F16K31/02—Actuating devices; Operating means; Releasing devices electric; magnetic
- F16K31/04—Actuating devices; Operating means; Releasing devices electric; magnetic using a motor
- F16K31/041—Actuating devices; Operating means; Releasing devices electric; magnetic using a motor for rotating valves
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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
- F16K31/53—Mechanical actuating means with toothed gearing
- F16K31/535—Mechanical actuating means with toothed gearing for rotating valves
Definitions
- This disclosure relates to a seal ring having a joint.
- the seal ring provided with a hard material such as resin or metal is provided with a joint for absorbing the difference in linear expansion.
- the abutment is a separation part in the circumferential direction of the seal ring, and both ends of the seal ring forming the abutment are separated in the circumferential direction in the free length of the seal ring, and the outer diameter of the seal ring is the object to be assembled.
- the diameter is slightly larger than the inner diameter of an object (for example, a nozzle).
- the seal ring is assembled inside the inner wall of the assembly target, so that the outer periphery of the seal ring is pressed against the inner wall of the assembly target, and the outer periphery of the seal ring matches the inner wall of the assembly target. To do.
- This disclosure is intended to provide a seal ring in which there is no gap in the joint A while preventing the radial displacement of the joint.
- the step cut joint 15 overlaps both the radial direction y and the plate thickness direction z of the seal ring 12, and restricts the end of the seal ring 12 from sliding in the radial direction y.
- the part is allowed to slide in the circumferential direction x.
- the step cut joint 15 disclosed in Patent Document 1 has a locking piece 15a extending from the end of the seal ring 12 in the circumferential direction x.
- a locking piece 15 b that engages with the locking piece 15 a in the radial direction y is provided on the inner diameter side of the seal ring 12. That is, a configuration is adopted in which the locking piece 15a at one end of the seal ring 12 and the locking piece 15a at the other end of the seal ring 12 are overlapped in the plate thickness direction z on the outer diameter side of the seal ring 12. is doing.
- the gap ⁇ in which fluid leaks in the thickness direction at the joint A can be closed on the outer diameter side of the seal ring 12.
- the seal ring according to the first aspect of the present disclosure has an annular shape and includes a main body having a joint at one place in the circumferential direction. Both ends of the main body forming the joint have overlapping portions where one end and the other end of the main body overlap.
- the overlapping portion has a step cut joint that overlaps in the radial direction and a lap joint that overlaps in the plate thickness direction.
- the opposing surface facing the plate thickness direction is a plane extending from the inner circumferential arc of the seal ring to the outer circumferential arc of the seal ring.
- the drawing It is a schematic sectional drawing of an EGR valve, It is an overall view of the seal ring, (A) The figure which looked at the joint of the seal ring by 1st Embodiment from the plate
- the EGR device is a technology that suppresses the combustion temperature in the engine combustion chamber by mixing a part of the exhaust gas discharged from the engine as EGR gas to the intake side of the engine, thereby mixing EGR gas that is non-combustible gas into a part of the intake air. It is.
- the EGR device includes an EGR valve 1 that opens and closes an EGR flow path 2 that returns a part of the exhaust gas flowing through the exhaust passage to the intake passage and adjusts the opening thereof.
- the EGR valve 1 may be used in a high pressure EGR device or may be used in a low pressure EGR device.
- the EGR valve 1 includes a housing 3 that forms a part of the EGR flow path 2 therein.
- the EGR valve 1 includes a butterfly valve 4 that can open and close the EGR flow path 2.
- the EGR valve 1 includes an electric actuator 6 that rotates the butterfly valve 4 via a shaft 5 that is instructed to rotate relative to the housing 3.
- the housing 3 is made of an aluminum alloy die-cast.
- a cylindrical nozzle 7 made of a metal material (for example, stainless steel) having excellent heat resistance and wear resistance is fixedly arranged on the inner wall of the EGR flow path 2, and the inside of the nozzle 7 is the EGR flow path 2.
- the butterfly valve 4 has a substantially disk shape, opens and closes the EGR flow path 2 according to the rotational position of the shaft 5, and variably adjusts the opening area of the EGR flow path 2.
- the shaft 5 supports the butterfly valve 4 so as to be rotatable inside the nozzle 7.
- the axis of the shaft 5 is inclined with respect to the center line of the nozzle 7.
- the shaft 5 supports the butterfly valve 4 in a cantilever manner, and is fixed to the lower end portion of the shaft 5 in a state where the butterfly valve 4 is inclined.
- the shaft 5 is rotatably supported by two bearings 8 arranged only on the upper side of the EGR flow path 2.
- the two bearings 8 are spaced apart in the vertical direction, and may be rolling bearings such as ball bearings or sliding bearings such as metal bearings.
- a seal member 9 that prevents leakage of EGR gas is disposed between the housing 3 and the shaft 5.
- an independent seal member 9 is provided between the two bearings 8.
- a bearing 8 combined with a sealing function may be used.
- the electric actuator 6 is fixed to the upper part of the housing 3 and rotationally drives the shaft 5.
- the electric actuator 6 is well known, and includes an electric motor that generates rotational power when energized, and a speed reducer that amplifies the rotational torque of the electric motor and transmits it to the shaft 5.
- the electric actuator 6 shown in FIG. 1 includes a return spring 10 that returns the shaft 5 to an initial position, and a rotation angle sensor 11 that detects the rotation angle of the shaft 5.
- the opening degree of the butterfly valve 4 is controlled and the EGR amount returned to the intake passage of the engine is adjusted.
- the butterfly valve 4 is rotated to adjust the EGR amount.
- the outer peripheral edge of the butterfly valve 4 is closed with a gap between the butterfly valve 4 and the inner peripheral wall of the nozzle 7 when fully closed.
- a seal ring 12 is provided. Specifically, the seal ring 12 is fitted into an annular groove 13 formed on the outer peripheral edge of the butterfly valve 4 over the entire circumference.
- the seal ring 12 includes a main body 20.
- the main body 20 is formed by forming a wire having a substantially square cross section into an annular shape.
- the main body 20 has a joint A for absorbing a difference in linear expansion at one place in the circumferential direction x.
- the joint A is a separation portion in the circumferential direction x in the seal ring 12, and the outer diameter dimension of the seal ring 12 is provided slightly larger than the inner diameter dimension of the nozzle 7 in the free length of the seal ring 12.
- overlapping portions 14 where one end and the other end of the seal ring 12 overlap.
- the overlapping portion 14 is provided with a step-cut joint 15 that overlaps the radial direction y and restricts the joint A from shifting in the radial direction y, and a lap joint 16 that overlaps the plate thickness direction z.
- the step cut joint 15 will be described.
- the step-cut joint 15 overlaps the radial direction y of the seal ring 12 and restricts the end of the seal ring 12 from sliding in the circumferential direction x while restricting the end of the seal ring 12 from sliding in the radial direction y. Allow.
- the step cut joint 15 is provided by combining a plane portion that overlaps in the plate thickness direction z and an engagement portion that overlaps in the radial direction y.
- one end of the seal ring 12 forming the joint A will be referred to as a first end B, and the other end will be referred to as a second end C.
- the plane portion is a plane perpendicular to the plate thickness direction z, and is a surface obtained by cutting the plate thickness direction z of the seal ring 12 with a thickness of 1 ⁇ 2. Specifically, a planar portion is provided on each of the first end B and the second end C.
- the plane portion provided at the first end B is referred to as a first plane portion 21, and the plane portion provided at the second end C is referred to as a second plane portion 22.
- the first flat surface portion 21 and the second flat surface portion 22 are provided so as to be slidable in the circumferential direction x in a state where they overlap with the plate thickness direction z.
- the engaging part has a stepped cross section, and includes an engaging piece that extends in the circumferential direction x at the end of the seal ring 12 and an engaged piece that engages with the engaging piece in the radial direction y.
- the locking piece is provided on the outer diameter side of the seal ring 12.
- the locked piece is provided on the inner diameter side of the seal ring 12.
- the locking piece may be provided on the inner diameter side of the seal ring 12 and the locked piece may be provided on the outer diameter side of the seal ring 12.
- a locking piece and a locked piece are provided at each of the first end B and the second end C.
- the locking piece and the locked piece provided at the first end B are referred to as a first locking piece 23 and a first locked piece 24.
- the locking piece and the locked piece provided at the second end C are referred to as a second locking piece 25 and a second locked piece 26.
- the first locking piece 23 is a protruding portion extending in the circumferential direction x on the outer diameter side of the first end B, and the inner peripheral surface of the first locking piece 23 is provided on an arc surface along the circumferential direction x.
- This arc surface is defined as a first inward arc surface 27.
- the second locking piece 25 is a protrusion that extends in the circumferential direction x on the outer diameter side of the second end C, and the inner peripheral surface of the second locking piece 25 is an arc surface along the circumferential direction x.
- This arc surface is defined as a second inward arc surface 28.
- the first locked piece 24 is a stepped step extending in the circumferential direction x on the inner diameter side of the first end B, and the outer peripheral surface of the first locked piece 24 is provided on an arc surface along the circumferential direction x. It is done.
- This arc surface is defined as a first outward arc surface 29.
- the second locked piece 26 is a step-shaped step extending in the circumferential direction x on the inner diameter side of the second end C, and the outer peripheral surface of the second locked piece 26 is an arc along the circumferential direction x. Provided on the surface.
- This arc surface is defined as a second outward arc surface 30.
- the first inward arc surface 27, the second inward arc surface 28, the first outward arc surface 29, and the second outward arc surface 30 described above are surfaces perpendicular to the radial direction y.
- the first inward arc surface 27, the second inward arc surface 28, the first outward arc surface 29, and the second outward arc surface 30 are all provided in an arc centered on the ring center of the seal ring 12.
- the first inward arc surface 27 and the second outward arc surface 30 are in contact with each other in the radial direction y, and the second inward arc surface 28 and the first outward arc surface 29 are in contact with each other in the radial direction y.
- an arc that forms the inner periphery of the seal ring 12 is referred to as an inner periphery arc R1
- an arc that forms the outer periphery of the seal ring 12 is referred to as an outer periphery arc R2.
- the facing surface facing the plate thickness direction z is provided on a plane extending from the inner circumferential arc R1 to the outer circumferential arc R2.
- the opposing surface will be specifically described.
- the facing surface is a plane perpendicular to the plate thickness direction z, and has a shape obtained by cutting the plate thickness direction z of the seal ring 12 with a thickness of 1 ⁇ 2. That is, when the facing surface of the first end portion B is the first facing surface 31 and the facing surface of the second end portion C is the second facing surface 32, the first facing surface 31 is in contact with the first flat surface portion 21 described above.
- the second opposing surface 32 is a flat surface that is continuous with the second flat surface portion 22 described above.
- the range in the circumferential direction x where the step cut joint 15 is provided at the first end B and the range in the circumferential direction x where the lap joint 16 is provided are provided adjacent to the circumferential direction x. That is, as shown in FIG.3 (b), the range of the circumferential direction in which the 1st locking piece 23 and the 1st to-be-latched piece 24 are provided, and the range of the circumferential direction x in which the 1st opposing surface 31 is provided are It is provided adjacent to the circumferential direction x.
- the range in the circumferential direction x where the step cut joint 15 is provided at the second end C and the range in the circumferential direction x where the lap joint 16 is provided are provided adjacent to the circumferential direction x. That is, as shown in FIG. 3C, the range in the circumferential direction x where the second locking piece 25 and the second locked piece 26 are provided and the range in the circumferential direction x where the second facing surface 32 is provided are , Adjacent to the circumferential direction x.
- the first facing surface 31 is a flat surface that continues from the inner circumferential arc R1 to the outer circumferential arc R2.
- the second facing surface 32 is a flat surface that continues from the inner circumferential arc R1 to the outer circumferential arc R2.
- the seal ring 12 of this embodiment can prevent the shift in the radial direction y of the joint A by the step cut joint 15 provided at the end of the seal ring 12 that forms the joint A, and further, the wraps facing each other in the plate thickness direction z
- the joint 16 makes it possible to eliminate the gap ⁇ (a sign, see FIG. 4A) of the joint A. That is, it is possible to provide the seal ring 12 in which the gap A does not exist in the joint A while preventing the deviation of the joint A in the radial direction y.
- the seal ring 12 of this embodiment is used for the EGR valve 1 as described above. For this reason, when EGR valve 1 is closed, it is possible to avoid a problem that EGR gas leaks from joint A of seal ring 12. That is, the valve closing leakage of the EGR valve 1 can be suppressed, and the reliability of the EGR valve 1 can be improved.
- the seal ring 12 of this embodiment is provided with a resin excellent in heat resistance, oil resistance, and wear resistance.
- the resin forming the seal ring 12 is not limited. However, when an example is disclosed, the resin is provided by a resin material such as PEEK, PPS, and PA.
- the seal ring 12 is provided by a resin molding technique in which a molten resin is poured into the resin mold and is taken out from the resin mold after the resin is cured. This will be described more specifically.
- the seal ring 12 is molded by a resin molding technique in a state where the joint A is separated in the circumferential direction x.
- the overlapping portions 14 are overlapped, and heat treatment is performed in a state where the seal ring 12 is kept in a perfect circle with a jig, and polymerization is performed even if the seal ring 12 has a free length.
- the seal ring 12 with the portion 14 overlapped is molded.
- the jig for keeping the seal ring 12 in a perfect circle is to keep the outer diameter dimension of the seal ring 12 in a perfect circle slightly larger in diameter than the inner diameter dimension of the nozzle 7.
- the seal ring 12 having both the step cut joint 15 and the lap joint 16 can be easily manufactured. That is, the productivity of the seal ring 12 having the step cut joint 15 and the lap joint 16 can be increased, and the seal ring 12 having the step cut joint 15 and the lap joint 16 can be provided at low cost.
- the present disclosure may be applied to a seal ring 12 for another use different from the EGR valve 1.
- the seal ring 12 of the present disclosure may be applied to all on-off valves, flow rate adjustment valves, and pressure adjustment valves that use the butterfly valve 4. Or you may apply to the seal ring 12 with which cylindrical bodies, such as a piston, are mounted
- both the step-cut joint 15 for preventing the radial displacement y of the joint A and the lap joint 16 for closing the gap ⁇ of the joint A are provided at the end of the seal ring 12 forming the joint A. Accordingly, it is possible to provide the seal ring 12 having no gap ⁇ in the joint A while preventing the joint A from shifting in the radial direction y.
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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)
- Sealing Devices (AREA)
- Exhaust-Gas Circulating Devices (AREA)
Abstract
Description
図1~図3(d)に基づいて第1実施形態を説明する。この第1実施形態は、本開示を自動車の走行用のエンジンに搭載されるEGR装置のEGRバルブ1に適用している。
この実施形態のシールリング12は、合口Aを成すシールリング12の端部に設けたステップカットジョイント15によって合口Aの径方向yのずれを防ぐことができ、さらに板厚方向zで対向するラップジョイント16によって合口Aの隙間α(符合、図4(a)参照)をなくすことができる。即ち、合口Aの径方向yのずれを防ぎつつ、合口Aに隙間αが存在しないシールリング12を提供できる。
この実施形態のシールリング12は、上述したように、EGRバルブ1に用いられる。このため、EGRバルブ1の閉弁時に、シールリング12の合口AからEGRガスが洩れる不具合を回避することができる。即ち、EGRバルブ1の閉弁漏れを抑えることができ、EGRバルブ1の信頼性を高めることができる。
この実施形態のシールリング12は、耐熱性、耐油性、耐摩耗性に優れた樹脂によって設けられる。シールリング12を成す樹脂はもちろん限定するものではないが、一例を開示するとPEEK、PPS、PA等の樹脂材料によって設けられる。
上記の実施形態では、シールリング12を樹脂で設ける例を示したが、限定するものではなく、ステンレス等の金属によって設けても良い。
Claims (3)
- 円環形状を呈し、周方向(x)の1箇所に合口(A)を有する本体(20)を備え、
前記合口(A)を形成する前記本体(20)の両端は、前記本体(20)の一端と他端が重なる重合部(14)を有し、
前記重合部(14)は、径方向(y)に重なるステップカットジョイント(15)と、板厚方向(z)に重なるラップジョイント(16)とを有し、
前記ラップジョイント(16)において板厚方向に対向する対向面(31、32)は、前記シールリングの内周円弧(R1)から、前記シールリングの外周円弧(R2)に至る平面であるシールリング。 - 前記本体(20)は、樹脂で形成される請求項1に記載のシールリング。
- 前記本体(20)は、エンジンの排気ガスの一部をEGRガスとしてエンジンの吸気側へ戻すEGRバルブ(1)に用いられる請求項1または請求項2に記載のシールリング。
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR1020177032093A KR20170134671A (ko) | 2015-11-04 | 2016-10-11 | 실링링 |
DE112016005053.4T DE112016005053T5 (de) | 2015-11-04 | 2016-10-11 | Dichtungsring |
US15/752,633 US10704507B2 (en) | 2015-11-04 | 2016-10-11 | EGR valve including seal ring |
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JP2015216544A JP6447461B2 (ja) | 2015-11-04 | 2015-11-04 | シールリング |
JP2015-216544 | 2015-11-04 |
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PCT/JP2016/080053 WO2017077816A1 (ja) | 2015-11-04 | 2016-10-11 | シールリング |
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US (1) | US10704507B2 (ja) |
JP (1) | JP6447461B2 (ja) |
KR (1) | KR20170134671A (ja) |
DE (1) | DE112016005053T5 (ja) |
WO (1) | WO2017077816A1 (ja) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
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CN110799783A (zh) * | 2017-06-19 | 2020-02-14 | 辉门布尔沙伊德有限公司 | 刮油活塞环 |
Families Citing this family (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CA3050340C (en) * | 2017-01-10 | 2021-08-31 | Saint-Gobain Performance Plastics L+S GMBH | Seal rings and methods for making them |
EP3568277B1 (en) | 2017-01-10 | 2023-09-20 | Saint-Gobain Performance Plastics L+S GmbH | Injection molded seal rings and methods for making them |
DE102019101051A1 (de) * | 2019-01-16 | 2020-07-16 | Pierburg Gmbh | Abgasrückführventil für eine Verbrennungskraftmaschine |
JP7127560B2 (ja) * | 2019-01-30 | 2022-08-30 | 株式会社デンソー | バタフライバルブ |
CN110030429A (zh) * | 2019-05-07 | 2019-07-19 | 浙江欧菲石油设备有限公司 | 一种软密封阀门及其挡圈 |
JP2021004670A (ja) * | 2019-06-27 | 2021-01-14 | 株式会社デンソー | バルブ装置 |
JP7147710B2 (ja) * | 2019-08-01 | 2022-10-05 | 株式会社デンソー | シールリング、弁装置 |
JP7226351B2 (ja) * | 2020-01-22 | 2023-02-21 | 株式会社デンソー | 弁装置 |
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JP6192524B2 (ja) | 2013-12-12 | 2017-09-06 | 株式会社リケン | ピストンリング |
JP2015216544A (ja) | 2014-05-12 | 2015-12-03 | 株式会社リコー | 撮像装置および撮像方法 |
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2015
- 2015-11-04 JP JP2015216544A patent/JP6447461B2/ja not_active Expired - Fee Related
-
2016
- 2016-10-11 WO PCT/JP2016/080053 patent/WO2017077816A1/ja active Application Filing
- 2016-10-11 KR KR1020177032093A patent/KR20170134671A/ko not_active Application Discontinuation
- 2016-10-11 US US15/752,633 patent/US10704507B2/en active Active
- 2016-10-11 DE DE112016005053.4T patent/DE112016005053T5/de not_active Ceased
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JPH0573359U (ja) * | 1992-03-12 | 1993-10-08 | 正道 池田 | ピストンリング |
JPH08326923A (ja) * | 1995-05-30 | 1996-12-10 | Nok Corp | シールリング |
JP2004028320A (ja) * | 2002-06-28 | 2004-01-29 | Sanyo Electric Co Ltd | ピストンリング |
JP2011179625A (ja) * | 2010-03-03 | 2011-09-15 | Denso Corp | ボールバルブ |
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CN110799783A (zh) * | 2017-06-19 | 2020-02-14 | 辉门布尔沙伊德有限公司 | 刮油活塞环 |
Also Published As
Publication number | Publication date |
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US10704507B2 (en) | 2020-07-07 |
JP2017089675A (ja) | 2017-05-25 |
US20180258889A1 (en) | 2018-09-13 |
JP6447461B2 (ja) | 2019-01-09 |
DE112016005053T5 (de) | 2018-07-12 |
KR20170134671A (ko) | 2017-12-06 |
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