WO2011158750A1 - 環状弾性ガスケット - Google Patents
環状弾性ガスケット Download PDFInfo
- Publication number
- WO2011158750A1 WO2011158750A1 PCT/JP2011/063360 JP2011063360W WO2011158750A1 WO 2011158750 A1 WO2011158750 A1 WO 2011158750A1 JP 2011063360 W JP2011063360 W JP 2011063360W WO 2011158750 A1 WO2011158750 A1 WO 2011158750A1
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- WO
- WIPO (PCT)
- Prior art keywords
- gasket
- annular
- annular elastic
- cylindrical body
- elastic gasket
- Prior art date
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02F—CYLINDERS, PISTONS OR CASINGS, FOR COMBUSTION ENGINES; ARRANGEMENTS OF SEALINGS IN COMBUSTION ENGINES
- F02F11/00—Arrangements of sealings in combustion engines
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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
- F16J15/02—Sealings between relatively-stationary surfaces
- F16J15/021—Sealings between relatively-stationary surfaces with elastic packing
- F16J15/022—Sealings between relatively-stationary surfaces with elastic packing characterised by structure or material
- F16J15/024—Sealings between relatively-stationary surfaces with elastic packing characterised by structure or material the packing being locally weakened in order to increase elasticity
- F16J15/025—Sealings between relatively-stationary surfaces with elastic packing characterised by structure or material the packing being locally weakened in order to increase elasticity and with at least one flexible lip
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C45/14—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor incorporating preformed parts or layers, e.g. injection moulding around inserts or for coating articles
- B29C45/14065—Positioning or centering articles in the mould
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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
- F16J15/02—Sealings between relatively-stationary surfaces
- F16J15/06—Sealings between relatively-stationary surfaces with solid packing compressed between sealing surfaces
- F16J15/10—Sealings between relatively-stationary surfaces with solid packing compressed between sealing surfaces with non-metallic packing
- F16J15/12—Sealings between relatively-stationary surfaces with solid packing compressed between sealing surfaces with non-metallic packing with metal reinforcement or covering
- F16J15/121—Sealings between relatively-stationary surfaces with solid packing compressed between sealing surfaces with non-metallic packing with metal reinforcement or covering with metal reinforcement
- F16J15/122—Sealings between relatively-stationary surfaces with solid packing compressed between sealing surfaces with non-metallic packing with metal reinforcement or covering with metal reinforcement generally parallel to the 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
- F16J15/3204—Sealings between relatively-moving surfaces with elastic sealings, e.g. O-rings with at least one lip
- F16J15/3224—Sealings between relatively-moving surfaces with elastic sealings, e.g. O-rings with at least one lip capable of accommodating changes in distances or misalignment between the surfaces, e.g. able to compensate for defaults of eccentricity or angular deviations
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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
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L5/00—Devices for use where pipes, cables or protective tubing pass through walls or partitions
- F16L5/02—Sealing
- F16L5/025—Sealing the pipe being movable
-
- 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
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L5/00—Devices for use where pipes, cables or protective tubing pass through walls or partitions
- F16L5/02—Sealing
- F16L5/10—Sealing by using sealing rings or sleeves only
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C45/14—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor incorporating preformed parts or layers, e.g. injection moulding around inserts or for coating articles
- B29C45/14065—Positioning or centering articles in the mould
- B29C2045/14122—Positioning or centering articles in the mould using fixed mould wall projections for centering the insert
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C45/0001—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor characterised by the choice of material
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
- B29K2021/00—Use of unspecified rubbers as moulding material
- B29K2021/006—Thermosetting elastomers
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
- B29L2031/00—Other particular articles
- B29L2031/26—Sealing devices, e.g. packaging for pistons or pipe joints
- B29L2031/265—Packings, Gaskets
Definitions
- the present invention relates to an annular elastic gasket that is interposed between an insertion hole formed in a housing and a cylindrical body that is inserted into the housing via the insertion hole.
- an inverter case in an internal combustion engine And an annular elastic gasket interposed between the head cover and a plug tube penetrating the head cover.
- An insertion hole is formed in the inverter case, the head cover or the like as a housing, and the cooling pipe or the plug tube as a cylindrical body is held through the insertion hole.
- An annular gasket made of an elastic body such as rubber or a synthetic resin for interposing the fluid flowing inside is prevented.
- Such an annular gasket includes a hollow cylindrical gasket base that is held in a press-fitted state in the insertion hole, and an annular shape that extends from the gasket base toward the centripetal side and elastically contacts the outer peripheral portion of the cylindrical body. It consists of a seal lip.
- Patent Documents 1 to 4 show examples of such gaskets.
- Patent Document 5 discloses an annular rubber gasket having an annular concave groove for holding a fluid device such as a thermostat in an inner peripheral portion and interposed in a compressed state at a joint portion of a pipe.
- Patent Document 1 a rubber tongue (seal lip) having a V-shaped cross section is configured to elastically contact the outer peripheral portion of the inserted plug tube.
- the tongue-like portion is made of rubber and has a V-shaped cross section, so that it elastically contacts the plug tube.
- Patent Document 3 shows a similar gasket molded from a relatively hard synthetic resin material, but there is a difficulty in suitability such as durability (cracking etc.) of the gasket against vibration of the plug tube. It is expected that.
- Patent Documents 2 and 4 show a gasket in which an extension spring or a garter spring is embedded in a seal lip having rubber elasticity so as to reinforce the binding force on the plug tube.
- an extension spring or garter spring is used, the cost is high, and the need for cost reduction cannot be met.
- Patent Document 5 when an annular rubber gasket having an annular groove on the inner peripheral portion is produced by molding, an annular groove is formed on the outer peripheral portion in order to simplify the undercut structure for molding as much as possible. A mold structure is used, and after demolding, the molded body is inverted inside and outside using the characteristics of rubber.
- the annular rubber gasket disclosed in Patent Document 5 is not elastically fitted to the outer peripheral portion of the cylindrical body as described above, and therefore, it is possible to reverse the inside and outside of the annular rubber gasket. It is not directly related to power.
- the present invention has been made in view of the above circumstances, and provides an annular elastic gasket that has followability and binding force for a cylindrical body and can be easily manufactured without causing an increase in cost. It is aimed.
- the annular elastic gasket according to the present invention includes a hole wall of the insertion hole and the cylindrical body between the insertion hole formed in the housing and the cylindrical body that penetrates the housing through the insertion hole.
- An annular elastic gasket interposed in a state of being elastically contacted with an outer peripheral portion of the hollow gasket gasket body, comprising a molded body of an elastic material, and being held in a press-fitted state in the insertion hole;
- An annular seal lip portion extending to the centripetal side, and an elastic coupling portion flexibly coupled to the tip of the front side portion of the annular seal lip portion with the tip as a coupling base toward the centripetal side,
- the elastic coupling part is expanded with the front side part, and is elastically mounted on the outer peripheral part of the cylindrical body in a state of having a reduced diameter elasticity. It is formed.
- the elastic coupling part when the cylindrical body is penetrated, the elastic coupling part is formed so as to be elastically mounted in contact with the outer peripheral part of the cylindrical body. It is also good.
- the front side portion may be formed so as to be elastically mounted in a state of contacting the outer peripheral portion of the cylindrical body.
- the elastic coupling portion is folded back from the state facing the centripetal side with the coupling base as a base point to the centrifugal side, and the seal lip portion of the seal lip portion has a reduced diameter elasticity. It is located on the distal side of the distal side and is formed so as to be elastically mounted on the outer periphery of the cylindrical body via the front side when the cylindrical body is penetrated. Also good.
- the front side portion of the seal lip portion may include a minimum diameter portion that elastically contacts the outer peripheral portion of the cylindrical body.
- the elastic coupling portion may be formed thicker than the front side portion of the seal lip portion.
- a reinforcing material may be embedded in the gasket base.
- An annular elastic gasket according to the present invention includes an insertion hole formed in a housing and a cylindrical body that is inserted into the housing through the insertion hole, and a hole wall of the insertion hole and the cylindrical body. It is inserted in a state of elastic contact with the outer periphery. In this interposed state, the hollow cylindrical gasket base is held in a press-fitted state in the insertion hole.
- an annular seal lip portion extends to the centripetal side, and is elastically coupled to the tip of the front side portion of the annular seal lip portion so as to be bent toward the centripetal side with the tip as a coupling base. Department.
- the said elastic coupling part is diameter-expanded with the said front side part, and is elastically mounted by the outer peripheral part of the said cylindrical body in the state holding the diameter reduction elasticity.
- the gasket base is held in the insertion hole in a press-fitted state, and this elastic state seals the gap between the hole wall of the insertion hole of the housing and the outer peripheral portion of the cylindrical body. Even when the fluid circulates, the fluid does not leak out of the housing from the penetrating portion of the cylindrical body.
- the elastic coupling portion is bent and coupled to the front side portion of the annular seal lip portion so as to face the centripetal side.
- the elastic coupling portion when the cylindrical body is penetrated, the elastic coupling portion is expanded in diameter and has a reduced diameter elasticity. Therefore, the cylindrical body is firmly mounted, and this portion is securely sealed.
- the elastic coupling part is expanded in diameter together with the front side part, the restoring elasticity of both of them synergizes, and the strong elastic state is accurately expressed.
- the elastic coupling portion when configured to be elastically mounted in contact with the outer peripheral portion of the cylindrical body, the elastic coupling portion directly contacts the outer peripheral portion of the cylindrical body, and this elastic The outer peripheral portion of the cylindrical body is sealed by the contact portion.
- the tip side part is also brought into contact with the outer peripheral part of the cylindrical body, two sealing points are substantially formed, and the sealing performance is further improved.
- the elastic coupling portion when the elastic coupling portion is folded back to the centrifugal side so as to be positioned on the centrifugal side back portion of the front side portion, the elastic elasticity of the elastic coupling portion is reduced. It acts on the front side part of the seal lip part from its back part, and this acts to reinforce the binding force of the front side part against the tubular body. Accordingly, it is possible to improve the followability to the vibration of the cylindrical body and the retention of the cylindrical body without using an extension spring or a garter spring.
- the elastic coupling portion is folded back from the state facing the centripetal side to the centrifugal side, and is formed so as to be located at the centrifugal back portion in the front side portion of the seal lip portion, so that the gasket is molded. Undercutting is not required as a molding machine, and there is no excessive cutting of the mold, and the productivity is excellent.
- the tip side portion of the seal lip portion includes a minimum diameter portion that elastically contacts the outer peripheral portion of the cylindrical body
- the elastic link acting from the back portion of the tip side portion is used.
- the reduced diameter elasticity of the adult is concentrated on this minimum diameter portion. Therefore, the elastic contact of the front side portion with respect to the outer peripheral portion of the cylindrical body is made stable, and the followability to the vibration of the cylindrical body and the holding performance of the cylindrical body are further improved.
- the elastic coupling portion when the elastic coupling portion is formed thicker than the front side portion of the seal lip portion, the reduced diameter elastic force in the folded state as described above becomes stronger, and the elastic body portion is more resistant to the cylindrical body. The binding action is more prominently expressed.
- the engagement portion that meshes with each other is formed on the centrifugal back portion in the front side portion of the seal lip portion and the elastic coupling portion, the folded state of the elastic coupling portion is stabilized, There is no concern that the elastic coupling portion is restored to the centripetal side during storage or transportation, or when the tubular body is inserted into the ring of the annular seal lip portion.
- a plurality of punched portions are intermittently formed in the elastic coupling portion along the circumferential direction, the elastic coupling portion can be easily folded back, and the folded state can be stabilized.
- any of the annular elastic gaskets if a reinforcing material is embedded in the gasket base, the shape of the gasket base is maintained, and deformation when the gasket base is press-fitted into the insertion hole is prevented. This press-fit holding state is further stabilized.
- FIG. 1 shows a longitudinal sectional view of an embodiment of an annular elastic gasket according to the present invention.
- An annular elastic gasket 1 shown in the figure is, for example, an insertion hole 20a formed in an inverter case (housing) 20 of an internal combustion engine. And a cooling pipe (cylindrical body) 30 that is inserted through the inverter case 20 through the insertion hole 20a.
- the annular elastic gasket 1 is made of a molded body of an elastic material such as an elastomer, which will be described later, and has a hollow cylindrical gasket base 2 held in a press-fitted state in the insertion hole 20a, and one end of the gasket base 2 (in FIG. 1).
- An annular seal lip portion 3 extending in a two-step taper shape that gradually decreases in diameter in the centripetal direction from the lower side portion of the paper surface toward the other end portion (upper portion of the paper surface in FIG. 1), and the annular seal lip portion 3 And an elastic coupling portion 4 coupled to the tip of the front side portion 3a.
- the outer diameter of the gasket base 2 is slightly larger than the inner diameter of the insertion hole 20 a formed in the inverter case 20.
- the two-step tapered annular seal lip portion 3 includes a base portion 3b having a large taper angle on the gasket base 2 side and a front side portion 3a having a small taper angle connected to the front side thereof.
- the elastic coupling portion 4 is bent and coupled at an obtuse angle with the distal end of the front side portion 3a as a coupling base portion 4a so that the distal end portion 4b faces straight toward the centripetal side from the coupling base portion 4a.
- the inner diameter of the tip portion 4 b is smaller than the outer diameter of the cooling pipe 30.
- An outward flange 2a is coupled to the other end of the gasket base 2, and has an L-shaped cross section including a cylindrical portion 5a and an outward flange 5b within the thickness of the gasket base 2 toward the outward flange 2a.
- a metal annular reinforcing material 5 is embedded.
- the missing portion 2b is formed as a result of molding in a state where the reinforcing material 5 is held at a predetermined position by the protrusion formed on the lower mold when the annular elastic gasket 1 is molded by the molding apparatus. .
- elastomer material constituting the annular elastic gasket 1 examples include ethylene propylene rubber (EPDM), acrylonitrile butadiene rubber (NBR), styrene butadiene rubber (SBR), acrylic rubber (ACM), hydrogenated acrylonitrile butadiene rubber (HNBR), and silicone.
- Rubber materials such as rubber (VMQ), fluorosilicone rubber (FVMQ), fluorine rubber (FKM), butyl rubber, polyisobutylene rubber, ethylene propylene copolymer rubber (EPDM), thermoplastic elastomers (olefin, polyester, polyamide) Styrene, etc.) are preferably employed.
- the annular elastic gasket 1 is used in a manner as shown in FIG. That is, the hollow cylindrical gasket base 2 is press-fitted in the opposite direction a into the insertion hole 20a formed in the inverter case 20 to be used from the upper side of the drawing, and is formed at the other end of the gasket base 2.
- the outward flanged portion 2a is carried on the upper peripheral edge of the insertion hole 20a in the inverter case 20.
- the reinforcing material 5 is embedded in the gasket base 2, the outer wall portion of the gasket base 2 and the inner wall portion of the insertion hole 20 a are not affected by the compression without elastic deformation due to the compression.
- the pressure contact state is maintained. By this pressure contact state, the interface between both wall portions is sealed, and external leakage of the fluid flowing through the inverter case 20 from the interface is prevented.
- a cooling pipe 30 is press-fitted into the ring of the annular seal lip portion 3 from the one end side of the gasket base 2 along the direction of arrow a.
- the cooling pipe 30 acts to push up the elastic coupling portion 4, and the elastic coupling portion 4 of the annular seal lip portion 3 is elastically expanded to the position of the two-dot chain line together with the front side portion 3a. Radially deformed.
- the distal end portion 4 b of the elastic coupling portion 4 is elastically and strongly abutted against the outer peripheral portion of the cooling pipe 30 by the restoring and contracting elastic force due to the diameter expansion accompanied by the front side portion 3 a of the elastic coupling portion 4.
- the elastic coupling portion 4 is bent and coupled so as to face the centripetal direction with the distal end of the front side portion 3a, that is, the coupling base portion 4a as a base point, the diameter expansion with the front side portion 3a is A strong restoring and shrinking elastic force is generated, whereby an elastic strong contact state of the elastic coupling portion 4 with respect to the outer peripheral portion of the cooling pipe 30 is realized.
- the contact interface between the elastic coupling portion 4 and the outer peripheral portion of the cooling pipe 30 is sealed, and external leakage of fluid flowing through the inverter case 20 from the interface is prevented. Further, the holding of the cooling pipe 30 is stabilized by the binding force of the elastic coupling portion 4.
- the elastic coupling portion 4 is coupled in a curved hook shape with the coupling base portion 4a as a base point so as to face the centripetal side.
- the tip 4b of the hook-shaped elastic coupling portion 4 is formed downward as shown in the figure so as to face in the anti-a direction.
- the elastic coupling portion 4 is It is pushed up by the cooling pipe 30 and is expanded in diameter with the front side portion 3a.
- the elastic coupling part 4 has a hook shape such that the tip part 4b faces in the anti-a direction, the pushing-up and the diameter expansion are the diameters of the bending radii of the bending part in the elastic coupling part 4. Largely elastically deformed with increasing size. As a result, a stronger restoring and shrinking elastic force than that in the above example is generated, and a part of the front side portion 3 a including the coupling base portion 4 a is formed by the outer peripheral portion of the cooling pipe 30 together with the tip end portion 4 b of the elastic coupling portion 4. Strong and elastic contact.
- the contact interface between the elastic coupling portion 4 and the outer peripheral portion of the cooling pipe 30 is more reliably sealed, and external leakage of the fluid flowing through the inverter case 20 from the interface is prevented. Further, the holding of the cooling pipe 30 is further stabilized by the binding force of the elastic coupling portion 4.
- the radius of curvature of the curved portion of the elastic coupling portion 4 is smaller than that of the example of FIG. 2, the elastic deformation accompanying the expansion of the diameter is further increased. Therefore, the inner surface of the front side portion 3a is elastically brought into contact with the outer peripheral portion of the cooling pipe 30 in a surface contact state in a wider range than the example of FIG.
- the elastic coupling portion 4 is coupled in such a shape that the distal end portion 4 b faces straight toward the centripetal side after once bent in a hook shape to the centrifugal side from the coupling base portion 4 a. .
- the straight portion facing the centripetal side is refracted in the middle due to the shape holding action of the curved portion facing the centrifugal side.
- the portion from the refracting portion to the tip portion 4b elastically contacts the outer peripheral portion of the cooling pipe 30 in a surface contact state.
- a part of the front side portion 3a including the coupling base portion 4a also elastically contacts the outer peripheral portion of the cooling pipe 30 in a surface contact state as in the example of FIG.
- two contact portions in a surface contact state are formed between the cooling pipe 30 and the annular elastic gasket 1, and the sealing performance of the portion is further improved.
- the elastic contact of the elastic coupling portion 4 and the front side portion 3 a with the outer peripheral portion of the cooling pipe 30 is not limited to the mode shown in the figure, but is a line contact Other contact modes with various combinations of contacts are also possible.
- FIG. 5 shows another embodiment of the annular elastic gasket according to the present invention.
- the curved elastic coupling portion 4 is folded back from the distal end of the annular seal lip portion 3, that is, the centripetal side from the coupling base portion 4a to the centrifugal side.
- the seal lip portion 3 is formed so as to be positioned on the distal side of the distal side portion 3a of the seal lip portion 3 while maintaining the reduced diameter elasticity.
- the minimum diameter portion 3c substantially corresponds to the inner diameter side portion of the coupling base portion 4a, and is the main body of the seal contact with the cooling pipe 30, and the inner diameter is the outer diameter of the target cooling pipe 30. It is considered smaller.
- symbol is attached
- FIG. 6 shows a procedure for molding the semi-finished product 10 of the annular elastic gasket 1 as shown in FIG.
- FIG. 6 shows a method using an injection molding apparatus 6.
- the injection molding apparatus 6 includes a lower mold 7 having a female mold 7a having a predetermined shape and an upper mold 8 having a male mold 8a having a predetermined shape. And an elastomer injection device (not shown).
- a plurality of protrusions 7b are formed at equal intervals in the circumferential direction on the peripheral upper end surface of the female die 7a.
- a steel plate such as an SPCC steel plate or stainless steel is pressed to prepare an L-shaped reinforcing member 5 having a cylindrical portion 5a and an outward flange portion 5b at one end.
- the reinforcing member 5 is disposed in the female die 7a of the lower die 7 so that the outward flange portion 5b is supported by the protrusion 7b.
- a cavity 9 as shown is formed by the male and female molds 7a and 8a.
- An unvulcanized or uncrosslinked elastomer material 100 is injected into the cavity 9 from the injection device and molded.
- the elastomer material those exemplified above are employed.
- the semi-finished product 10 includes a hollow cylindrical gasket base 2, an annular seal lip portion 3 including a base portion 3 b and a front side portion 3 a extending in a two-step taper direction from one end of the gasket base 2 to the centripetal side, A curved elastic coupling portion 4 coupled to the distal end of the annular seal lip portion 3.
- the elastic coupling portion 4 is located on the centripetal side and the distal end portion 4b is in the anti-a direction (see FIG. 5)). As shown in FIG.
- the elastic coupling portion 4 is sealed by the manual operation by folding it back to the centrifugal side with the coupling base portion 4a as a base point, as shown by a two-dot chain line in FIG.
- An annular elastic gasket 1 ⁇ / b> A as a final product located at the distal side of the distal side 3 a of the lip 3 is obtained. Since the elastic coupling portion 4 is positioned on the distal back portion of the front side portion 3a in a state where the elastic coupling portion 4 is expanded in diameter against the elasticity by the folding, the elastic coupling portion 4 has a reduced diameter elasticity by the restoring elasticity. .
- the position of the coupling base portion (folding base portion) 4a and the position of the minimum diameter portion 3c be substantially the same, thereby the minimum diameter portion 3c when the elastic coupling portion 4 is folded.
- the influence on the dimensional design specification can be suppressed.
- the elastic coupling part 4 is shaped to face the centripetal side, so that the molding device 6 does not need an undercut, and the molds 7 and 8 are impossible. There is no disconnection and its productivity is excellent.
- the front side portion 3a of the annular seal lip portion 3 is provided with a minimum diameter portion 3c that slightly protrudes toward the centripetal side. It will not be so much.
- the state shown in FIG. 7 is the semi-finished product 10 that reaches the annular elastic gasket 1A.
- the semi-finished product 10 is the final product in the distribution stage.
- the example by injection molding was shown, it is possible from the start to produce the semi-finished product 10 by other molding.
- the annular elastic gasket 1A is used in a manner as shown in FIG. That is, the hollow cylindrical gasket base 2 is press-fitted from one end thereof into an insertion hole 20a formed in the inverter case 20 to be used, and the outward flange-like portion 2a formed at the other end of the gasket base 2 is The inverter case 20 is carried on the periphery of the insertion hole 20a. By this press-fitting, the outer wall portion of the gasket base 2 is compressed in the centripetal direction so as to follow the position of the two-dot chain line (the position of the inner wall portion of the insertion hole 20a).
- the cooling pipe 30 is press-fitted into the ring of the annular seal lip portion 3 in the same manner as described above.
- the front side portion 3a of the annular seal lip portion 3 is elastically expanded in the centrifugal direction along the position of the two-dot chain line (the position of the outer peripheral portion of the cooling pipe 30).
- the restored reduced diameter elastic force due to the diameter expansion and the reduced diameter elastic force of the elastic coupling portion 4 synergize, and the front side portion 3 a elastically strongly contacts the outer peripheral portion of the cooling pipe 30.
- the elastic coupling portion 4 is positioned on the distal side of the distal side portion 3a in a state of having a reduced diameter elastic force, and when the diameter expansion force acts on the front side portion 3a, the elastic coupling portion 4 The diameter reduction elasticity is further promoted, the sealing function becomes remarkable, and the holding of the cooling pipe 30 is stabilized by the binding force.
- the minimum diameter portion 3c is formed in the front side portion 3a, the synergistic reduced diameter elasticity is concentrated on the minimum diameter portion 3c, and the elasticity of the front side portion 3a with respect to the outer peripheral portion of the cooling pipe 30 is increased.
- the contact of the annular seal lip 3 with respect to the vibration of the cooling pipe 30 and the retention of the cooling pipe 30 are further improved.
- FIG. 8 shows a modification of the annular elastic gasket 1A shown in FIG.
- a plurality of hollow portions 4 c are intermittently formed in the curved portion of the elastic coupling portion 4 along the circumferential direction.
- FIG. 9 shows another modification of the annular elastic gasket 1A of the same embodiment.
- the annular elastic gasket 1A of this example is characterized in that the elastic coupling portion 4 is formed thicker than the front side portion 3a of the seal lip portion 3 toward the tip portion 4b.
- the elastic coupling part 4 is thick, the elastic elasticity of the elastic coupling part 4 in the folded state becomes stronger, and in the usage mode shown in FIG. Is more prominently expressed.
- FIG. 10 shows still another modification of the annular elastic gasket 1A of the same embodiment.
- the elastic coupling portion 4 is formed thicker than the front side portion 3a of the seal lip portion 3 toward the tip portion 4b. It is characterized by the engagement part 40 which mutually meshes
- the claw portion 42 When the claw portion 42 is formed and the elastic coupling portion 4 is folded back to the centrifugal side, the claw portions 41 and 42 are engaged with each other, thereby forming the engagement portion 40. If such an engaging portion 40 is formed, the elastic force of the elastic coupling portion 4 is stabilized in addition to the reduced diameter elastic force, and can be cooled during storage, transportation, and cooling. At the time of press-fitting the pipe 30 or the like, there is no concern that the elastic coupling portion 4 is restored to the state facing the centripetal side.
- FIGS. 9 and 10 can be formed with a hollow portion 4c as shown in FIG. 8, which synergizes the specific effects of each example and further improves the practical value.
- the other configurations in the examples shown in FIGS. 9 and 10 are the same as those in the above example, so the same reference numerals are given to the common parts, and the description thereof is omitted here.
- the reinforcing material 5 is embedded in the gasket base 2
- the reinforcing material is used. 5 is not required.
- the reinforcing material 5 is not limited to metal, but may be made of hard synthetic resin or other material having rigidity.
- the inverter case 20 of the internal combustion engine and the cooling pipe 30 penetrating the inverter case 20 have been described as examples.
- a plug tube penetrating therewith and can also be applied between other two members having the same penetrating relation.
- the overall shape of the annular elastic gasket is not limited to the example shown in the figure.
- the annular elastic lip portion 3 does not have an outward flange-like portion 2a, and the annular seal lip portion 3 is not a two-step taper shape as shown in the figure, but gently curved. The shape etc. which were made may be sufficient.
Abstract
Description
尚、図1~図4に示す例において、弾性連成部4及び先側部3aの、冷却パイプ30の外周部に対する弾性的当接は、図示のような態様に限らず、線接触及び面接触の種々の組合せによる他の当接態様も可能である。
尚、図7に示す状態を、環状弾性ガスケット1Aに至る半製品10としたが、メーカーサイドでこの半製品10の状態でユーザー側に提供し、ユーザーサイドで前記弾性連成部4を折り返して使用するような仕様とする場合は、当該半製品10が流通段階における最終製品とされる。また、射出成型による例を示したが、その他の成型によって半製品10を作製することはもとより可能である。
2 ガスケット基体
3 環状シールリップ部
3a 先側部
3c 最小径部
4 弾性連成部
4a 連成基部(先側部の先端)
4c 刳り抜き部
5 補強材
20 インバータケース(ハウジング)
20a 挿通孔
30 冷却パイプ(筒状体)
40 係合部
Claims (9)
- ハウジングに形成された挿通孔と、該挿通孔を介して前記ハウジングに貫装される筒状体との間に、該挿通孔の孔壁と前記筒状体の外周部とに弾接する状態で介装される環状弾性ガスケットであって、
弾性材の成型体からなり、前記挿通孔に圧入状態で保持される中空筒状のガスケット基体と、該ガスケット基体より求心側に延出された環状シールリップ部と、該環状シールリップ部の先側部の先端に該先端を連成基部として求心側に向くよう屈曲連成された弾性連成部とよりなり、
前記筒状体が貫装された際には、前記弾性連成部が、前記先側部と共に拡径され、縮径弾力を保有した状態で前記筒状体の外周部に弾装されるよう形成されていることを特徴とする環状弾性ガスケット。 - 請求項1に記載の環状弾性ガスケットにおいて、
前記筒状体が貫装された際には、前記弾性連成部が、前記筒状体の外周部に当接する状態で弾装されるよう形成されていることを特徴とする環状弾性ガスケット。 - 請求項2に記載の環状弾性ガスケットにおいて、
前記筒状体が貫装された際には、更に前記先側部が、前記筒状体の外周部に当接する状態で弾装されるよう形成されていることを特徴とする環状弾性ガスケット。 - 請求項1に記載の環状弾性ガスケットにおいて、
前記弾性連成部は、前記連成基部を基点として求心側に向く状態から遠心側に折り返されて、縮径弾力を保有した状態で前記シールリップ部の先側部における遠心側背部に位置し、前記筒状体が貫装された際には、前記筒状体の外周部に前記先側部を介して弾装されるよう形成されていることを特徴とする環状弾性ガスケット。 - 請求項4に記載の環状弾性ガスケットにおいて、
前記シールリップ部の先側部は、前記筒状体の外周部に弾性的に当接する最小径部を備えていることを特徴とする環状弾性ガスケット。 - 請求項4または5に記載の環状弾性ガスケットにおいて、
前記弾性連成部は、前記シールリップ部の先側部より厚肉に形成されていることを特徴とする環状弾性ガスケット。 - 請求項6に記載の環状弾性ガスケットにおいて、
前記シールリップ部の先側部における遠心側背部と、前記弾性連成部とに、互いに噛み合う係合部が形成されていることを特徴とする環状弾性ガスケット。 - 請求項4乃至7のいずれか1項に記載の環状弾性ガスケットにおいて、
前記弾性連成部には、複数の刳り抜き部が、周方向に沿って間欠的に形成されていることを特徴とする環状弾性ガスケット。 - 請求項1乃至8のいずれか1項に記載の環状弾性ガスケットにおいて、
前記ガスケット基体に補強材が埋設されていることを特徴とする環状弾性ガスケット。
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CN2011800292536A CN102947629A (zh) | 2010-06-15 | 2011-06-10 | 环状弹性密封圈 |
JP2012520421A JPWO2011158750A1 (ja) | 2010-06-15 | 2011-06-10 | 環状弾性ガスケット |
US13/702,715 US8714563B2 (en) | 2010-06-15 | 2011-06-10 | Annular elastic gasket |
DE112011102032T DE112011102032T5 (de) | 2010-06-15 | 2011-06-10 | Ringförmige elastische Dichtung |
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JP2010135972 | 2010-06-15 | ||
JP2010-135972 | 2010-06-15 |
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JP (1) | JPWO2011158750A1 (ja) |
CN (1) | CN102947629A (ja) |
DE (1) | DE112011102032T5 (ja) |
WO (1) | WO2011158750A1 (ja) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
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WO2014026955A1 (fr) * | 2012-08-17 | 2014-02-20 | Acc - La Jonchere | Raccord de jonction entre une conduite pour fluide et un support annulaire |
JP2014090019A (ja) * | 2012-10-29 | 2014-05-15 | Denso Corp | 電力変換装置 |
US20170284477A1 (en) * | 2016-03-30 | 2017-10-05 | Sueddeutsche Gelenkscheibenfabrik Gmbh & Co. Kg | Connector arrangement for centering two shaft sections to be connected with one another |
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Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS63171648U (ja) * | 1987-04-30 | 1988-11-08 | ||
JP2002295341A (ja) * | 2001-03-30 | 2002-10-09 | Hino Motors Ltd | フューエルインジェクタのシール構造 |
JP2009150454A (ja) * | 2007-12-19 | 2009-07-09 | Nok Corp | パッキン |
Family Cites Families (15)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4696479A (en) * | 1985-08-26 | 1987-09-29 | Triseal Corporation | Unitized shaft seal assembly |
JPS63171648A (ja) | 1987-01-09 | 1988-07-15 | 株式会社 サタケ | 精穀装置 |
US5015001A (en) * | 1990-07-23 | 1991-05-14 | Mather Seal Company | Low friction seal assembly |
US5186472A (en) * | 1991-06-25 | 1993-02-16 | Federal-Mogul Corporation | Unitized radial shaft seal |
JP2990896B2 (ja) | 1991-09-30 | 1999-12-13 | 豊田工機株式会社 | ラビリンスシール付き回転機構 |
US5209499A (en) * | 1992-05-26 | 1993-05-11 | Mather Seal Company | Unitized polytetrafluoroethylene radial lip seal |
US5458420A (en) * | 1993-12-10 | 1995-10-17 | The Timken Company | Bearing seal with encoder |
US6357757B1 (en) * | 2000-03-07 | 2002-03-19 | American Axle & Manufacturing, Inc. | Integral seal protector/labyrinth |
JP2002098231A (ja) | 2000-09-21 | 2002-04-05 | Toyoda Gosei Co Ltd | 弾性ガスケット |
JP2002195096A (ja) | 2000-12-26 | 2002-07-10 | Toyoda Spinning & Weaving Co Ltd | シリンダヘッドカバー |
JP2006013076A (ja) | 2004-06-24 | 2006-01-12 | Mitsubishi Electric Corp | ラミネート基板及びそれを用いた電気機器 |
JP4516825B2 (ja) | 2004-11-12 | 2010-08-04 | 内山工業株式会社 | 環状ゴムガスケットの製造方法 |
JP4739745B2 (ja) * | 2004-12-21 | 2011-08-03 | Nok株式会社 | 遮音シール付き密封装置 |
JP2008144784A (ja) * | 2006-12-06 | 2008-06-26 | Nok Corp | パッキン及びシーリングシステム |
JP2009019740A (ja) | 2007-07-13 | 2009-01-29 | Nok Corp | 密封装置 |
-
2011
- 2011-06-10 WO PCT/JP2011/063360 patent/WO2011158750A1/ja active Application Filing
- 2011-06-10 US US13/702,715 patent/US8714563B2/en not_active Expired - Fee Related
- 2011-06-10 DE DE112011102032T patent/DE112011102032T5/de not_active Withdrawn
- 2011-06-10 CN CN2011800292536A patent/CN102947629A/zh active Pending
- 2011-06-10 JP JP2012520421A patent/JPWO2011158750A1/ja active Pending
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS63171648U (ja) * | 1987-04-30 | 1988-11-08 | ||
JP2002295341A (ja) * | 2001-03-30 | 2002-10-09 | Hino Motors Ltd | フューエルインジェクタのシール構造 |
JP2009150454A (ja) * | 2007-12-19 | 2009-07-09 | Nok Corp | パッキン |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2014026955A1 (fr) * | 2012-08-17 | 2014-02-20 | Acc - La Jonchere | Raccord de jonction entre une conduite pour fluide et un support annulaire |
FR2994591A1 (fr) * | 2012-08-17 | 2014-02-21 | Acc La Jonchere | Raccord de jonction entre une conduite pour fluide et un support annulaire |
JP2014090019A (ja) * | 2012-10-29 | 2014-05-15 | Denso Corp | 電力変換装置 |
US9307681B2 (en) | 2012-10-29 | 2016-04-05 | Denso Corporation | Power converter including semiconductor module and cooler |
US20170284477A1 (en) * | 2016-03-30 | 2017-10-05 | Sueddeutsche Gelenkscheibenfabrik Gmbh & Co. Kg | Connector arrangement for centering two shaft sections to be connected with one another |
Also Published As
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JPWO2011158750A1 (ja) | 2013-08-19 |
DE112011102032T5 (de) | 2013-04-04 |
US20130075980A1 (en) | 2013-03-28 |
CN102947629A (zh) | 2013-02-27 |
US8714563B2 (en) | 2014-05-06 |
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