WO2017169535A1 - Bague d'étanchéité - Google Patents

Bague d'étanchéité Download PDF

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Publication number
WO2017169535A1
WO2017169535A1 PCT/JP2017/008756 JP2017008756W WO2017169535A1 WO 2017169535 A1 WO2017169535 A1 WO 2017169535A1 JP 2017008756 W JP2017008756 W JP 2017008756W WO 2017169535 A1 WO2017169535 A1 WO 2017169535A1
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WO
WIPO (PCT)
Prior art keywords
tip
seal ring
locking
projecting
section
Prior art date
Application number
PCT/JP2017/008756
Other languages
English (en)
Japanese (ja)
Inventor
政徳 藤井
賢一 木津
宏昌 本城
池田　毅
秀夫 長岡
門口　正人
Original Assignee
三菱電線工業株式会社
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 三菱電線工業株式会社 filed Critical 三菱電線工業株式会社
Publication of WO2017169535A1 publication Critical patent/WO2017169535A1/fr

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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
    • 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
    • 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

Definitions

  • the present invention relates to a seal ring.
  • this seal ring 43 is an annular shape having a mating port portion 45 obtained by bias cutting a metal ring plate, and has a large amount of fluid leakage.
  • the metal seal ring 43 exerts a sealing performance by being pressed against the inner peripheral surface of the hole 44 with its own elastic urging force in the diameter expanding direction. Because a configuration, the open state of the butterfly valve 40, an arrow when Yuku close to M 41 direction, and fall off inadvertently from the outer peripheral recessed groove 42 as shown by two-dot chain line I hooking the valve seat corners 46 There was a problem that.
  • the composite piston ring described in Patent Document 1 has a structure in which a metal C-shaped ring on the inner peripheral side strongly resiliently biases the resin seal ring main body on the outer peripheral side in the diameter increasing direction. (It can be used for pistons that reciprocate in the cylinder), but if applied to the butterfly valve 40 as illustrated in FIG. There is a problem that the resin seal ring body is damaged early (before dropping off). Further, the resin seal ring main body has a problem that the joint portion is a simple step type and the amount of fluid leakage is large.
  • the present invention provides a seal ring body made of an overall annular resin composition having a joint portion formed by a first end and a second end at one place on the circumference, and an inner circumference of the seal ring body.
  • a seal ring provided with a metal elastic C-shaped ring that comes into contact with the surface with a large-diameter bullet urging force; Locking means for locking the first end portion and the second end portion against each other to restrict the force to a predetermined value is provided.
  • the locking means includes: a plate-shaped projecting piece protruding in the circumferential direction from an intermediate position in the thickness direction at the tip of the first end portion; and having a tip locking claw; and the second end A recessed groove for insertion provided with a back bulging space portion having a locking stepped portion that is recessed in the circumferential direction from an intermediate position in the thickness direction at the distal end of the portion.
  • the claw is configured to be locked to the locking stepped portion.
  • the locking means includes: a plate-shaped projecting piece projecting in the circumferential direction at the tip of the first end portion and having a tip locking pawl protruding radially outward; and the second A concave recess portion that is open radially inward at the tip of the end portion, and is configured such that the tip locking pawl is locked to a locking inner end surface near the tip of the concave portion. ing.
  • the locking means includes: a protruding piece protruding in the circumferential direction at the tip of the first end portion and having a tip locking claw protruding radially outward; and the second end portion A concave recess portion that is open radially inward, and is configured such that the tip locking pawl is locked to a locking inner end surface near the distal end of the concave portion;
  • the projecting piece and the recessed portion are disposed so as to be offset toward one side in the width direction, and the other end in the width direction prevents the first end from escaping radially inward with respect to the second end. Escape prevention means is provided.
  • the first end has a first base half with an L-shaped cross section and a first tip half with a rectangular cross section; the second end has a second base end with an L-shaped cross section.
  • a second half of the first end of the rectangular cross section; the second half of the second end can be fitted into a first recess of the first cross section of the first base half of the rectangular cross section; and
  • the first tip half can be fitted into a second recess having a rectangular cross section of two base end halves;
  • the locking means is the forefront of the first tip half of the first end, and
  • the first locking projection and the second locking projection are provided so as to protrude from the foremost end of the second tip half of the second end portion toward the inner side approaching each other.
  • joint portion of the seal ring main body and the cut line of the elastic C-shaped ring are disposed with their positions shifted in the circumferential direction. Further, it is used by being fitted into the outer circumferential groove of the valve body of the butterfly valve.
  • the above-described problems can be solved, the amount of fluid leakage can be reduced, the dropout from the seal groove formed in the valve body of the butterfly valve can be prevented, and the resin seal ring body Can prevent damage. In this way, the lifetime is long and stable and excellent sealing performance can be exhibited.
  • FIG. 1 It is a perspective view which shows one Embodiment of this invention. It is a simplified diagram explaining a structure and an effect
  • FIG. 6 is a perspective view showing a main part in a free state (a mating part open state) according to another embodiment of the present invention. It is a figure which shows the fitting part closed state.
  • FIG. 6 is a perspective view showing a main part in a free state (a joint opening state) according to another embodiment of the present invention.
  • FIG. 10 is a perspective view showing a main part in a free state (a mating part open state), showing still another embodiment of the present invention. It is a figure which shows a prior art example, (A) is explanatory drawing of a problem at the time of applying the conventional metal seal ring to a butterfly valve, (B) is a top view of the conventional seal ring.
  • a seal ring S includes a seal ring body 1 made of a resin composition, and a metal that contacts the inner peripheral surface 1 ⁇ / b> A of the seal ring body 1 with a resilient urging force F. And an elastic C-shaped ring 2 made of metal.
  • a seal ring main body (hereinafter sometimes referred to as a ring main body) 1 has a joint portion 3 at one place on the circumference, is entirely annular, and is made of a resin composition, and is a thermoplastic resin such as a PES resin composition. Compositions are preferred and can be molded integrally by injection molding.
  • a resin material of a resin composition PPS, PEEK, PTFE, etc. may be sufficient.
  • part or the whole of the ring body 1 may be formed by machining.
  • the joint portion 3 of the ring main body 1 and the cut 4 of the elastic C-shaped ring 2 are arranged with their positions shifted in the circumferential direction. As illustrated in FIG. 2, it is desirable to arrange (symmetrically) the mating portion 3 and the cut 4 at a position opposite to about 180 ° --- 180 ° ⁇ 30 °.
  • a butterfly valve 5 (used for an EGR valve or the like) can be cited. That is, as shown in the figure, is fitted on the outer periphery (seal) groove 7 of a disc-shaped valve element 6 of the butterfly valve 5, swings axis O 6 around a hole portion 8A of the valve seat 8 Open and close.
  • the two-dot chain line indicates the open state
  • solid lines the valve body 6 indicates a state immediately before closing the hole portion 8A while swinging in the arrow M 6 direction
  • said at Figure 14 of the conventional example in that The point at which the valve seat corner 46 (symbol 9 in FIG. 3) can be prevented from being caught, damaged or dropped will be described later.
  • a circumferential groove 13 is provided on the inner peripheral surface 1 ⁇ / b> A of the ring body 1 made of the resin composition, and an elastic C-shaped ring 2 having a circular cross section is formed in the groove 13. is fitted, it is held so as not to shift position in the width direction W 1 of the ring body 1.
  • the cross-sectional shape of the groove 13 is a triangular shape as shown in FIG. 4A, a shallow arc shape as shown in FIG. 4B, a shallow trapezoidal shape as shown in FIG.
  • the groove 13 is not formed on the entire inner peripheral surface 1 ⁇ / b> A of the ring body 1, but a groove non-formation region Y is provided.
  • the elastic C-shaped ring 2 is surrounded along the concave groove 13 by disposing the concave groove non-forming region Y at a position opposite to the mating portion 3 by 180 ° ⁇ 30 °. The positional deviation is prevented from occurring in the direction, and the cut 4 is kept at a position opposite to the mating portion 3 by about 180 ° as shown in FIG.
  • the seal ring main body 1 has the first end portion 21 and the second end portion 22 forming the above-mentioned joint portion 3 at one circumference in a closed state.
  • the locking means Z which can be stopped is provided.
  • the first end 21 and the second end 22 are locked to each other by the locking means Z in the closed state of the mating portion in each of the embodiments shown in FIGS. Te, to regulate the maximum diameter dimension D 1 of the seal ring outside diameter to "predetermined value". That is, the maximum diameter dimension D 1 of the seal ring outside diameter at the mating opening closed, with no grant radial in direction of shrinkage ⁇ (external force) to the ring body 1, the locking means Z only The outer diameter of the seal ring when the mating port is closed by the action.
  • the “predetermined value” means that the valve body 6 is outside of the seal ring body 1 in the “fully closed state” in which the valve body 6 has a shape perpendicular to the axis of the hole 8A.
  • This is a slightly larger value (1.01 ⁇ D 8 to 1.08D 8 ) than the outer diameter D 8 in the sealed state. That is, the inner diameter of the hole 8A of the valve seat 8, since it is the phase equal to the outer diameter D 8, slightly 1% to than the inner diameter of the hole 8A of the valve seat 8 the "predetermined value” In other words, the value is 8% larger.
  • the “predetermined value” means a seal ring when the piston comes into sliding contact with the inner surface of the cylinder tube and is sealed by the seal ring S.
  • a value slightly larger than the outer diameter D 8 of the main body 1 is 1.01 ⁇ D 8 to 1.08D 8 . That is, since the inner diameter of the cylinder tube is of a phase equal to the outer diameter D 8 of the seal ring main body 1 of the sealed state, the "predetermined value", only slightly 1% to 8% than the inner diameter of the cylinder tube In other words, it can be paraphrased as a large value.
  • the seal ring S In the closed state, the seal ring S generates a large-diameter bullet urging force that is a combination of the large-diameter bullet urging force of the elastic C-shaped ring 2 and the large-diameter bullet urging force of the seal ring body 1. ing. against this combined expanded resilient urging force, said locking means Z is in regulating the maximum diameter dimension D 1 of the seal ring outside diameter of the mating opening the closed state to the predetermined value. By regulating in this way, as shown in FIG.
  • valve body 6 by closing the valve body 6 while oscillating in an arrow M 6 direction without interfering with (seal ring S) ring body 1 valve seat corners 9
  • the ring body 1 can be prevented from being damaged, and the ring body 1 can be removed from the concave groove 7 (see the dropout of the conventional seal ring 43 shown by the two-dot chain line in FIG. 14). ) Can be prevented.
  • a plate-like projecting piece 15 having a tip locking claw 16 is provided at the first end portion 21 from the intermediate position in the thickness direction T of the ring body 1 in the circumferential direction. Projected to R.
  • the case where the plate-like projecting piece 15 (the locking claw 16) has a width dimension corresponding to the entire width dimension of the ring body 1 is illustrated.
  • the locking claw 16 has a triangular mountain shape, protrudes radially outward from the outermost end portion of the plate-like protruding piece 15, and the distal end surface 16A of the locking claw 16 is inclined and has a base end surface 16B. Substantially coincides with the thickness direction T.
  • a slit-like insertion groove having a rear bulging space portion 17 having a locking stepped portion 18 in the circumferential direction R from the intermediate position in the thickness direction T at the tip of the second end portion 22. 19 is formed.
  • the insertion groove 19 has a width dimension corresponding to the entire width dimension of the ring body 1 from the middle to the back including the back bulging space 17.
  • Deeper bulging space portion 17 has a radial dimension S 17 larger than the slit dimensions S 19 from the opening at the distal end of the radial direction of the intermediate region of the inserting groove 19, a radial of the insertion concave grooves 19
  • a locking stepped portion 18 is formed on the outer ceiling surface.
  • the locking stepped portion 18 forms its vertical side.
  • the above-mentioned unequal trapezoidal back bulge space is shaped and dimensioned so that the tip locking claw 16 can move in the back bulge space portion 17 in the circumferential direction R by a small dimension (when an external force acts on the ring body 1). If the portion 17 is formed and the ring body 1 is in a free state in which no external force is applied, the tip locking claw 16 becomes locked to the locking stepped portion 18 as shown in FIGS. the maximum diameter dimension D 1 of the can be maintained.
  • the locking means Z includes the plate-like projecting piece 15 and the insertion concave groove 19.
  • the first end portion 21 has a base end portion 21A having an L-shaped cross section with a bottom wall thickness, an intermediate portion 21B having an L-shaped cross section as shown in FIG.
  • the tip portion 21C forming a plate-like projecting piece body 15A having a single-character cross section and a tip locking claw 16 (described above).
  • a part of the second end portion 22 is fitted into a rectangular recess 23 formed in a continuous shape (as will be described later).
  • the second end portion 22 has a base end portion 22A having a cross-sectional shape in which the rear bulging space portion 17 is punched in the width direction with a single-character cross section, and the second end portion 22 is shown in FIG. 8 (D).
  • the intermediate portion 22B has an L-shaped cross section and the cross-sectional shape of the intermediate body portion of the concave groove 19 for insertion having a single character cross section is punched in the width direction.
  • the front end portion 22C is shown in FIG. 8 (C)
  • the intermediate portion 22B has an L-shaped cross section and the cross-sectional shape of the intermediate body portion of the concave groove 19 for insertion having a single character cross section is punched in the width direction.
  • the upper surface 22D of the lower portion 22E from which the space portion 17 (the insertion recessed groove 19) shown in FIGS. 8C and 8D is punched forms a continuous plane, and the upper portion of FIG. 22F continues in a rectangular cross section having the same shape and dimensions as the tip 22C, and fits into the rectangular recess 23 of the first end 21 described with reference to FIG.
  • the first end 21 can be said to be a three-step step having a first stepped surface 31, a second stepped surface 32, and a third stepped surface 33.
  • the second end portion 22 is a two-step step having a first stepped surface 34 and a second stepped surface 35, and it can be said that a concave groove 19 for insertion is formed in this.
  • the locking means Z has a plate-like projecting piece 15 that protrudes in the circumferential direction at the tip of the first end 21 and has a tip locking claw 16 that protrudes radially outward, and a second end.
  • the concave portion 24 is formed in the radial inward direction.
  • the front end locking claw 16 of the first end portion 21 can be locked to the locking inner end surface 25 of the second end portion 22 near the front end of the recessed portion 24.
  • the inner peripheral surface layer portion indicated by the two-dot chain lines 26 and 27 is omitted. It has a structure.
  • the second stepped surface 32 of FIG. 5 is omitted, and two stepped surfaces 31A and 33A are provided at the first end portion 21, and in FIG.
  • the recessed groove 19 for insertion is omitted, and a recessed portion 24 that opens in the radial direction is formed.
  • the locking means Z has a distal end locking claw 16 projecting in the circumferential direction at the distal end of the first end 21 and projecting outward in the radial direction.
  • a projecting piece 55 and a concave recess portion 24 that is open radially inward.
  • the front end locking claw 16 of the first end portion 21 can be locked to the locking inner end surface 25 of the second end portion 22 near the front end of the recessed portion 24.
  • the protrusion 55 and the recessed portion 24 is disposed offset to one of the width direction W 1, for example, the width W 55 of the projecting pieces 55, of the ring body 1 and 50% to 75% of the width dimension W 10.
  • the escape preventing means G for the first end portion 21 is prevented from escaping in the radial inward direction relative to the second end portion 22, arranged.
  • This escape prevention means G reliably prevents the tip locking claw 16 of the projecting piece 55 from detaching from the locking inner end surface 25 of the recessed recess 24 that is open in the radial inward direction.
  • the first end 21 shown in FIGS. 11 and 12 is provided with a first stepped surface 31A, as will be apparent from comparison with FIGS. 9 and 10 (described above).
  • a projecting piece 55 is projected in the circumferential direction with the same width as 31A, and a rectangular bar-shaped locking projection 28 is projected in the circumferential direction along the projecting piece 55.
  • the second end 22, Fig. 9, has the same recessed portion 24, engaging the end face 25 and 10, At a other in the width direction W 1, for the engagement
  • a receiving projecting piece 29 for projecting the projecting portion 28 at a radially inward position is provided.
  • the first end 21 escapes radially inward (downward in FIGS. 12 (B) and 12 (C)) with respect to the second end 22 and engages.
  • the tip locking claw 16 is about to be detached from the stop inner end surface 25
  • the receiving projecting piece 29 of the second end 22 is strongly received while being locked to the protruding portion 28 of the first end 21. It is the structure which holds and prevents the said detachment
  • FIG. 12 (B) (C) the first end portion 21 in the radial direction, while attempting to escape as indicated by arrow H, receiving the other of the locking projection 28 in the width direction W 1
  • the protrusion 29 is blocked.
  • the escape prevention means G is configured by the locking protrusion 28 of the first end 21 and the receiving protrusion 29 of the second end 22.
  • the escape prevention means G is not limited to FIGS. 11 and 12, and may be, for example, an insertion structure between a circumferential ridge and a groove (not shown) as long as the same function and function are exhibited. Etc., design change is free.
  • a front end locking claw 16 and a locking inner end face 25 near the front end of the recessed portion 24 of the second end 22 are formed at the front end of the projecting piece 55 of the first end 21.
  • the locking protrusion 28 of the first end 21 and the receiving protrusion 29 of the second end 22 are also provided with a locking inner end surface near the tip of the tip locking claw and the recessed portion. Also good. By doing so, it can be mounted without worrying about the mounting direction.
  • the first end 21 has a first base half 51 with an L-shaped cross section and a first base half 51 with an L-shaped cross section and a first tip half 52 with a rectangular cross section.
  • the second end 22 has a second base half 53 with an L-shaped cross section and a second tip half 54 with a rectangular cross section.
  • the second tip half portion 54 can be fitted into the first recess 65 having a rectangular cross section of the first base end half portion 51. Further, the first tip half 52 can be fitted into the second recess 56 having a rectangular cross section of the second base end half 53. In this way, the first end 21 has the first stepped surface 57 and the second stepped surface 58 (two step steps). Further, the second end portion 22 has a first stepped surface 59 and a second stepped surface 60 (two step steps).
  • the locking means Z includes the tip of the first tip half 52 of the first end 21 and the second tip half 54 of the second end 22.
  • the first latching convex portion 61 and the second latching convex portion 62 are provided so as to project inward and inward from the leading edge.
  • the design change is free,
  • the cross-sectional shape of the ring main body 1 is a chamfered rectangle as shown in FIG. 4 (C), or FIG. As shown in B), it is also desirable that the sliding contact surface 63 has a round shape or the like.
  • the first and second end portions 21 and 22 have two or more steps so that the amount of fluid leakage can be sufficiently reduced and stabilized. Excellent sealing performance. Moreover, since the seal body 1 made of the resin composition and the metal elastic C-shaped ring 2 are combined (composite product), the adhesion to the seal surface is improved, and the amount of fluid leakage can be further reduced. In addition, the metal C-shaped ring 2 has taken sufficient measures against creep (deformation) of the resin composition, and exhibits excellent sealing performance over a long period of use.
  • the sealing function is exhibited on the outer peripheral surface side (radial outer surface side), and the locking means Z is provided in the middle or inner surface side in the radial direction. Since it is the arrangement
  • the seal ring S As a use of the seal ring S according to the present invention, it is suitable for a butterfly valve, and when applied to a butterfly valve of an EGR valve of an automobile or the like, the original exhaust gas control function of the EGR valve is accurately, stably, over a long period of time. In addition, the problem of the seal ring falling off when the valve is opened / closed is solved, and the exhaust gas control function is accurately demonstrated over a long period of time.
  • the present invention provides a seal ring body 1 made of an overall annular resin composition having a mating portion 3 formed by the first end portion 21 and the second end portion 22 at one place on the circumference. And a metal elastic C-shaped ring 2 that comes into contact with the inner peripheral surface 1A of the seal ring main body 1 with an expanded elastic urging force.
  • the locking means Z for locking the first end 21, second end 22 to each other
  • a non-contact (non-sealed) state to a contact (sealed) state with respect to the sealed surface such as the inner peripheral surface of the valve seat and the inner peripheral surface of the cylinder tube, the valve For seat angles and cylinder tube opening corners, etc. (fit on butterfly valve body or piston etc. It is possible to prevent the seal ring from biting and being damaged, and when switching to the contact (sealed) state as described above, the valve seat corners and the cylinder tube opening end corners, etc.
  • the seal ring has a small amount of fluid leakage, excellent sealing performance, and withstands long-term use and has a long life. For example, if it is applied to a butterfly valve of an EGR valve, it can contribute to improving the accuracy of exhaust gas control and extending its life.
  • the locking means Z protrudes in the circumferential direction R from the intermediate position in the thickness direction T at the tip of the first end portion 21 and has a plate-like protruding piece 15 having a tip locking claw 16. And at the front end of the second end portion 22 for insertion with a rear bulging space portion 17 having a locking stepped portion 18 that is recessed from the intermediate position in the thickness direction T in the circumferential direction R. And the tip locking claw 16 is configured to be locked to the locking stepped portion 18, so that once the tip locking claw 16 is locked, the locked state is changed. Even if the butterfly valve is kept open and closed repeatedly, it will not come off unexpectedly. In this way, the locked state is stably maintained for a long period of time, and the sealing performance is highly reliable.
  • the seal since the plate-like projecting piece 15 and the back bulging space portion 17 (the recessed groove 19 for insertion) are arranged in the radial direction from the middle to the inner circumference, which is not involved in the sealing function of the seal ring, the seal The outer peripheral surface directly related to the function can exhibit a sufficiently excellent sealing performance. Thus, the great effects of reducing fluid leakage and preventing the seal ring from falling off and being damaged are obtained.
  • the locking means Z includes a plate-shaped protruding piece 15 that protrudes in the circumferential direction at the tip of the first end 21 and has a tip locking claw 16 that protrudes radially outward.
  • the tip end of the second end portion 22 comprises a concave recess 24 that is open radially inward, and the tip end locking claw is formed on the locking inner end face 25 near the tip of the recess 24. Since 16 is configured to be locked, the shape of the first and second end portions 21 and 22 is simplified, facilitating manufacture, and when the first end portion 21 is switched to the locked state.
  • the second end portion 22 may be elastically deformed slightly inward and outward in the radial direction, so that the mating portion 3 can be easily changed from the open state to the closed state.
  • the locking means Z protrudes in the circumferential direction at the tip of the first end 21 and has a protruding piece 55 having a tip locking claw 16 protruding radially outward
  • the tip end of the second end portion 22 comprises a concave recess 24 that is open radially inward, and the tip locking pawl 16 is attached to the locking inner end face 25 near the tip of the recess 24.
  • the escape preventing means G for preventing the second end portion 22 from escaping in the radial inward direction is provided, the projecting piece 55 is elastically deformed radially inward when switching to the locked state. It can be done easily and quickly. Moreover, once the locking state is established, the escape preventing means G prevents the first end 21 from escaping in the radial inward direction, so that the locking is not unexpectedly released.
  • the first end 21 has a first base half 51 having an L-shaped cross section and a first tip half 52 having a rectangular cross section
  • the second end 22 has an L-shaped cross section.
  • the second base end half 53 and the second front end half 54 having a rectangular cross section
  • the second front end half 54 is fitted in the first recess 65 of the first base end half 51 having a rectangular cross section.
  • the first tip half 52 can be fitted into a second recess 56 having a rectangular cross section of the second base half 53
  • the locking means Z includes the first end
  • the first locking projections projecting inward from the leading edge of the first tip half 52 of 21 and the leading edge of the second tip half 54 of the second end 22 toward the inside. 61. Since it is configured with the second locking projection 62, the shape and structure can be simplified, and the switching to the locked state can be easily performed. Furthermore, there is little fluid leakage and sealing performance is excellent.
  • the seal ring is evenly distributed over the entire 360 ° circumference.
  • a resilient force is generated outwardly and evenly in close contact with the inner peripheral surface to be sealed, so that the sealing performance can be improved, and the above-described damage and dropout of the seal ring can be prevented more reliably.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Lift Valve (AREA)
  • Sealing Devices (AREA)

Abstract

Selon la présente invention, afin d'empêcher qu'une bague d'étanchéité montée sur une rainure de joint périphérique externe du corps de vanne d'une vanne papillon se détache, la bague d'étanchéité a un corps de joint d'étanchéité (1) qui est constitué à partir d'une composition de résine et qui a une partie encoche d'ajustement (3) au niveau d'une position circonférentielle, et une première partie d'extrémité (21) et une seconde partie d'extrémité (22) du corps de joint d'étanchéité (1) sont en prise l'une avec l'autre par un moyen de mise en prise (Z), la dimension maximale du diamètre agrandi D1 du diamètre extérieur de la bague d'étanchéité lorsque la partie encoche d'ajustement est fermée étant limitée à une valeur prédéterminée.
PCT/JP2017/008756 2016-03-31 2017-03-06 Bague d'étanchéité WO2017169535A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2016070665A JP6650810B2 (ja) 2016-03-31 2016-03-31 シールリング
JP2016-070665 2016-03-31

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WO2017169535A1 true WO2017169535A1 (fr) 2017-10-05

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WO (1) WO2017169535A1 (fr)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2020012507A (ja) * 2018-07-18 2020-01-23 株式会社デンソー シールリング及びこれを用いた弁装置
JP2020122521A (ja) * 2019-01-30 2020-08-13 株式会社デンソー バタフライバルブ
CN116277689A (zh) * 2023-03-27 2023-06-23 安徽禾臣普菲彻橡塑科技有限公司 高性能氟橡胶环及成型机
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JP2020012507A (ja) * 2018-07-18 2020-01-23 株式会社デンソー シールリング及びこれを用いた弁装置
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