WO2012017726A1 - Joint d'étanchéité à lèvre - Google Patents

Joint d'étanchéité à lèvre Download PDF

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Publication number
WO2012017726A1
WO2012017726A1 PCT/JP2011/062052 JP2011062052W WO2012017726A1 WO 2012017726 A1 WO2012017726 A1 WO 2012017726A1 JP 2011062052 W JP2011062052 W JP 2011062052W WO 2012017726 A1 WO2012017726 A1 WO 2012017726A1
Authority
WO
WIPO (PCT)
Prior art keywords
lip
ring
seal member
flange portion
caulking
Prior art date
Application number
PCT/JP2011/062052
Other languages
English (en)
Japanese (ja)
Inventor
壮敏 板谷
康浩 池田
Original Assignee
イーグル工業株式会社
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 イーグル工業株式会社 filed Critical イーグル工業株式会社
Priority to JP2011552267A priority Critical patent/JP5770109B2/ja
Publication of WO2012017726A1 publication Critical patent/WO2012017726A1/fr

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Classifications

    • 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
    • F16J15/3228—Sealings between relatively-moving surfaces with elastic sealings, e.g. O-rings with at least one lip formed by deforming a flat ring

Definitions

  • the present invention relates to a lip type seal which is a kind of sealing device.
  • the lip type seal of the present invention is used, for example, as a shaft seal for a water pump (W / P) for vehicles such as automobiles, or as a shaft seal for general-purpose W / P.
  • the lip type seal 81 has a holding ring 82 fitted to the inner periphery of the shaft hole, and a step-like holding part 82a for holding the O-ring 83 is provided at the end of the holding ring 82 on the sealing fluid side.
  • a caulking portion 82b is provided at the atmospheric end, and a rubber-like elastic first lip seal member 84, a resin second lip seal member 85, and a backup ring 86 are provided between the holding portion 82a and the caulking portion 82b.
  • a lip type seal 81 having a structure in which a pin is sandwiched (see Patent Document 1).
  • the first lip seal member 84 made of a rubber-like elastic body, the second lip seal member 85 made of resin, and the backup ring 86 are integrally held by a caulking load when the caulking portion 82b is caulked.
  • the second lip seal member 85 located in the middle of these three members 84, 85, 86 is simply sandwiched between the first lip seal member 84 and the backup ring 86 located on both sides thereof.
  • the second lip seal member 85 may start to rotate together with sliding with the shaft 74 or may be displaced so as to come out inward in the radial direction. Cannot be fully utilized.
  • the holding portion 82a provided on the holding ring 82 has a function of holding the O-ring 83 as described above, and the three members 84 and 85 are secondaryly connected to the crimping portion 82b. , 86 has a function of sandwiching. Therefore, the holding portion 82a has a situation that its radial width is determined solely by the size of the O-ring 83, so that the secondary function is achieved when the O-ring 83 has a small wire diameter. In some cases, the two lip seal members 84 and 85 and the backup ring 86 cannot be firmly fixed by caulking.
  • the present invention can firmly fix the resin-made second lip seal member assembled to the inner periphery of the retaining ring together with the rubber-like elastic first lip seal member and the backup ring, It is therefore an object of the present invention to provide a lip type seal capable of preventing the member from co-rotating with respect to the shaft and displacing in the radial direction, and in addition to this, both the lip seal member and the backup ring An object of the present invention is to provide a lip type seal that can be firmly fixed by caulking.
  • the lip type seal according to claim 1 of the present invention is mounted on the inner periphery of the shaft hole of the housing and is slidably brought into close contact with the peripheral surface of the shaft so that the sealed fluid in the machine is moved to the atmosphere side.
  • a lip-type seal that suppresses leakage a holding ring fitted to the inner periphery of the shaft hole, and a first lip seal member made of a rubber-like elastic body arranged on the inner peripheral side of the holding ring
  • a resin-made second lip seal member disposed on the inner circumferential side of the retaining ring and on the atmosphere side of the first lip seal member; and an inner circumferential side of the retaining ring and the second lip seal member
  • a backup ring disposed on the atmosphere side of the cylindrical hole, and the holding ring is provided at a cylindrical portion fitted on the inner peripheral side of the shaft hole, and at a sealed fluid side end of the cylindrical portion.
  • the crimping portion is integrally crimped with the first lip seal member, the second lip seal member, and the backup ring arranged on the inner peripheral side of the cylindrical portion of the retaining ring.
  • the first lip seal member, the second lip seal member, and the backup ring are sandwiched between the inward flange portion and the caulking portion in a non-adhesive manner, and the second lip seal member and the backup ring are
  • a fixing structure is provided in which a protrusion provided on the backup ring engages and engages with the second lip seal member by a load of the caulking, and the backup ring and the holding ring are provided with a circle of the annular caulking portion. A part of the circumference is pushed into and engaged with a kerf provided in the backup ring by the caulking load.
  • the fixing structure is provided.
  • the lip type seal according to claim 2 of the present invention is the lip type seal according to claim 1, wherein a folded portion is integrally provided at an inner peripheral end portion of the inward flange portion in the holding ring.
  • An outward flange portion is integrally provided continuously with the folded portion, and the outward flange portion is disposed such that an end surface on the atmosphere side contacts an end surface on the sealing fluid side of the inward flange portion, and the outward flange portion
  • the outer diameter dimension of the portion is set to be larger than the outer diameter dimension of the inward flange portion and the cylindrical portion.
  • the lip type seal according to claim 3 of the present invention is the lip type seal according to claim 1 or 2, wherein the backup ring is a cylinder disposed on the inner peripheral side of the cylindrical portion of the holding ring. And a flange portion provided radially inward from the sealed fluid side end of the cylindrical portion, and the projection is provided on the sealed fluid side end surface of the flange portion and the cylinder.
  • the kerf is provided at the atmosphere side end of the part.
  • the first lip seal member made of a rubber-like elastic body, the second lip seal member made of resin, and the backup ring by a caulking load when the caulking portion of the holding ring is caulked
  • the protrusions provided on the backup ring are inserted into the second lip seal member made of resin located in the middle of these three members and the adjacent backup ring by the caulking load.
  • a fixing structure (first fixing structure) that bites into and engages the lip seal member is provided. First, the resin-made second lip seal member and the backup ring are firmly fixed.
  • the backup ring and the holding ring are provided with a second fixing structure in which a part of the circumference of the annular crimping portion is pushed into a notch provided in the backup ring by a caulking load and engaged.
  • the backup ring and the retaining ring are firmly fixed.
  • the resin-made second lip seal member, the backup ring, and the retaining ring are firmly fixed by the first and second fixing structures, so that the resin-made second lip seal member is attached to the shaft.
  • an inward flange portion is provided at the end of the retaining ring on the side of the sealing fluid as an alternative to the step-shaped holding portion in the prior art. Since the flange portion does not hold the O-ring, the radial width thereof can be set to an arbitrary size regardless of the wire diameter of the O-ring. Accordingly, it is possible to suppress the occurrence of a situation in which the lip seal member and the backup ring cannot be firmly crimped and fixed as in the prior art described above due to insufficient radial width.
  • the inward flange portion it is conceivable that a folded portion is integrally provided at the inner peripheral end portion and an outward flange portion is integrally provided continuously to the folded portion. Is demonstrated.
  • the inward flange serving as a load receiving portion in the caulking structure is reinforced from behind by the outward flange portion, and thus the strength of the inward flange portion can be increased (merit 1).
  • the outward flange portion is more radially outward than the inward flange portion and the tubular portion. It is supposed to protrude. Therefore, when inserting the lip type seal into the shaft hole of the housing, the insertion depth of the lip type seal with respect to the shaft hole can be made constant by abutting the outward flange portion against the peripheral edge of the shaft hole (merits) 2).
  • this is a cylindrical portion disposed on the inner peripheral side of the cylindrical portion in the retaining ring, and a flange portion provided radially inward from the sealed fluid side end portion of the cylindrical portion.
  • the flange portion includes a projecting portion according to the first fixing structure on the end surface on the sealing fluid side, and a kerf according to the second fixing structure at the atmospheric end portion of the cylindrical portion. According to this, it is possible to firmly connect the resin-made second lip seal member and the holding ring via the backup ring provided with the protrusions and the cut grooves.
  • the second fixing structure by the kerf will be described together.
  • the second fixing structure is configured such that a part of the annular caulking portion on the circumference is caulking load.
  • the annular caulking portion is maintained in an annular shape even after being pushed and engaged.
  • a combination of a kerf and a claw can be mentioned, but in the case of this combination of a kerf and a claw, the circumference of the kerf and the claw is in each case when the lip type seal is assembled. The top alignment must be done.
  • the roller caulking method is more suitable than the press caulking method.
  • the protrusion provided on the backup ring bites into the second lip seal member and engages with the second lip seal member made of resin and the adjacent backup ring. Since the fixing structure is provided, the resin-made second lip seal member and the backup ring are firmly fixed. In addition, because the backup ring and the retaining ring are provided with a second fixing structure in which a part of the circumference of the annular crimping portion is pushed into and engaged with a kerf provided in the backup ring by a caulking load, These backup ring and holding ring are firmly fixed.
  • the resin-made second lip seal member rotates together with the shaft or in the radial direction. Displacement can be suppressed, and the sealing performance can be stabilized.
  • the inward flange portion provided at the end of the retaining ring on the sealed fluid side does not hold the O-ring, and the radial width can be set to an arbitrary size. It is possible to secure the radial width and firmly fix both the lip seal member and the backup ring by caulking.
  • the strength of the inward flange portion is increased by the outward flange portion.
  • the insertion depth of the lip type seal with respect to the shaft hole can be always constant.
  • the present invention includes the following embodiments.
  • (1) (1-1) In the present invention, the end face of the first metal ring (holding ring) is folded, and a rubber seal (first lip seal member), a resin seal (second lip seal member), and a second A metal ring (backup ring) was structured such that the other end face portion of the first metal ring was roller-caulked.
  • the metal burrs generated in the case of press caulking can be assembled without any occurrence, and the inclination variation of the rubber seal can be reduced.
  • the second metal ring is fixed by providing a protrusion, and the first metal is inserted into a groove provided on the end surface of the second metal ring.
  • the present invention can position the lip seal device on the end face of the housing by bending the metal ring that fits into the seal housing and providing a flange portion. Even when the sealing device moves in the axial direction, it can be allowed to move by the elastic force of the bent portion of the metal ring.
  • a lip member, a resin seal, and a caulking support plate are inserted in this order in a state in which a bent flange portion is formed on the metal ring, and opposite to the flange side of the metal ring.
  • the sealing device is created by crimping the part, but the caulking of the metal ring is caulked with the sealing member inserted, so the sealing member must be provided so as not to deviate from the design value.
  • the shape as in the present invention since the flat flange portion is provided, the structure is easy to apply a caulking load, and therefore the dimensions can be easily controlled. (2-4)
  • the same production method as in the present invention (after forming the O-ring holding part on the metal ring, When a lip member or the like is inserted and the side opposite to the O-ring holding part of the metal ring is squeezed), the O-ring holding part has only a depth in the radial direction for the insertion of the O-ring. It is difficult to fix a jig or the like and apply a caulking load, so it is difficult to control the dimensions. (Contrary to the above, since the method of forming the O-ring holding portion lastly affects the dimensions of the seal portion, such a method is difficult to consider.)
  • FIG. 1 shows an overall view of a water pump 71 to which a lip type seal 1 according to an embodiment of the present invention is attached, that is, a shaft (rotation) rotatably supported by a housing (casing) 72 via a bearing 73.
  • a pulley 75 is fixed to one end of a shaft 74 and an impeller 76 is fixed to the other end.
  • the lip type seal 1 is mounted on the inner periphery of the shaft hole of the housing 72 and is slidably brought into close contact with the peripheral surface of the shaft 74 so that the sealing fluid (cooling water) in the machine leaks to the atmosphere side (bearing side). Suppress.
  • FIG. 2 shows a cross section of the main part of the lip type seal 1 according to the embodiment, and the lip type seal 1 is configured as follows.
  • the right side of the figure is the sealed fluid side A, and the left side of the figure is the atmosphere side B.
  • the lip type seal 1 is attached to the inner periphery of the shaft hole of the housing 72 and is slidably in close contact with the peripheral surface of the shaft 74, and is made of a rubber-like elastic body disposed on the sealed fluid side A. It has a two-stage lip structure having a seal lip 24 and a resin seal lip 33 disposed on the atmosphere side B.
  • the lip type seal 1 includes, as its components, a holding ring 11 fitted to the inner periphery of the shaft hole of the housing 72 and a first rubber-made elastic body disposed on the inner peripheral side of the holding ring 11.
  • a backup ring 41 disposed on the atmosphere side B of the second lip seal member 31, and a reinforcing ring 51 is embedded inside the first lip seal member 21 made of rubber-like elastic material.
  • the holding ring 11 is made of a predetermined rigid material such as metal, for example, a pressed product of a metal plate, and is formed into a ring shape as a whole, and has a cylindrical portion 12 fitted to the inner periphery of the shaft hole of the housing 72.
  • An inward flange portion 13 is integrally formed with the end portion of the cylindrical portion 12 on the sealed fluid side, and an annular crimp portion 14 is integrally formed with the end portion of the cylindrical portion 12 on the atmosphere side.
  • the inward flange portion 13 is bent at the inner peripheral end portion thereof toward the sealed fluid side A and further radially outward, and a turn-back portion 15 rotated 180 degrees is integrally formed at the inner peripheral end portion of the inward flange portion 13.
  • an outward flange portion 16 is formed integrally with the folded portion 15.
  • the outward flange portion 16 is disposed so that the atmospheric end surface thereof is in contact with the sealed fluid side end surface of the inward flange portion 13, and the outer diameter dimension thereof is the outer diameter dimension of the inward flange portion 13 and the cylindrical portion 12. Is set larger than.
  • the former inward flange portion 13 acts as an end wall portion against which the first lip seal member 21 made of rubber-like elastic material and the reinforcing ring 51 are abutted from one side in the axial direction when the lip type seal 1 is assembled.
  • the first lip seal member 21, the second lip seal member 31, and the backup ring 41 are interposed between the crimping portion 14 and the end wall portion.
  • the latter outward flange portion 16 functions to reinforce the inward flange portion 13 from behind, and abuts against the peripheral edge of the shaft hole opening of the housing 72 when the lip type seal 1 is inserted into the shaft hole of the housing 72.
  • the outer diameter of the outward flange portion 16 is equal to the inward flange portion 13 and the cylindrical shape.
  • the outer diameter dimension of the portion 12 may be set equal to or less than the outer diameter dimension, or the outward flange portion 16 or the folded portion 15 and the outward flange portion 16 may be omitted without being formed.
  • an outer peripheral seal portion 17 made of an elastic film is interposed between the holding ring 11 and the inner peripheral surface of the shaft hole to form a sealing action over the entire periphery. It is attached.
  • the first lip seal member 21 is made of a predetermined rubber-like elastic body (for example, H-NBR), is formed into a ring shape as a whole, and is non-adhered to the inner peripheral side of the cylindrical portion 12 of the holding ring 11.
  • a cylindrical portion 22 is formed, and an annular radial direction portion 23 is integrally formed from the atmospheric end of the cylindrical portion 22 inward in the radial direction, and from the inner peripheral end of the radial direction portion 23 to the sealed fluid side A.
  • a seal lip (first seal lip) 24 is integrally formed.
  • the seal lip 24 is slidably in close contact with the peripheral surface of the shaft 74 at its lip end, and a screw portion (screw seal) 25 that performs a pumping action when the shaft rotates is provided on the slide portion.
  • the reinforcement ring 51 embedded in the first lip seal member 21 is made of a predetermined rigid material such as metal, for example, a pressed product of a metal plate, and is formed into a ring shape as a whole and embedded in the cylindrical portion 22 of the first lip seal member 21.
  • the cylindrical portion 52 and the inward flange portion 53 embedded in the radial portion 23 are integrally formed and formed into an L-shaped cross section.
  • the flange portion 53 is provided with a required number of through holes 54 passing through the flange portion 53 in the thickness direction.
  • the second lip seal member 31 is made of a predetermined resin material (for example, PTFE), is formed into an annular shape as a whole, has an annular flat surface portion 32, and a seal lip (secondary lip) is formed on the inner peripheral end of the flat surface portion 32.
  • the seal lip) 33 is integrally formed so as to be inclined toward the sealed fluid side A.
  • the seal lip 33 is slidably in close contact with the peripheral surface of the shaft 74 at its lip end, and is disposed on the atmosphere side B of the first seal lip 24. Therefore, the first seal lip 24 provides the primary seal. In contrast, a secondary seal is made.
  • the backup ring 41 is formed of a predetermined rigid material such as metal, for example, a pressed product of a metal plate, similar to the retaining ring 11 and the like, and is formed into an annular shape as a whole, and has a cylindrical portion 42.
  • a flange portion 43 is integrally molded from the portion toward the inside in the radial direction so as to have an L-shaped cross section.
  • the backup ring 41 is disposed on the atmosphere side B of the second lip seal member 31 and functions to support the second lip seal member 31 from the atmosphere side B.
  • the flange portion 43 is formed with a protrusion 44 for preventing rotation and preventing slipping, and the cylindrical portion 42 is provided with a kerf 45, which will be described later.
  • the first lip seal member 21 made of rubber-like elastic material, the second lip seal member 31 made of resin, and the backup ring 41 are caulked and held by the holding ring 11 as described above, and the cylindrical portion 12 of the holding ring 11 is held.
  • the first lip seal member 21, the second lip seal member 31, and the backup ring 41 are caulked and fixed side by side in the axial direction between the inward flange portion 13 and the caulking portion 14.
  • the caulking process is performed by bending the caulking portion 14 set to be relatively thin inward in the radial direction over the entire circumference.
  • first fixing structure 61 and second fixing structure 62 are provided so as not to occur.
  • First fixing structure 61 That is, a part of the protrusion 44 on the circumference is provided toward the sealing fluid side A on the sealing fluid side end face of the flange part 43 in the backup ring 41, and this protrusion 44 is the flat part 32 of the second lip seal member 31.
  • the backup ring 41 and the second lip seal member 31 are prevented from rotating by engaging in the circumferential direction and the backup ring 41 and the second lip seal member 31 in the radial direction by engaging in the radial direction. Relative displacement is prevented. Engagement is performed when the protrusion 44 bites into the surface of the second lip seal member 31 due to a caulking load during caulking.
  • a required number of the protrusions 44 are provided on the circumference, that is, provided at one place or a plurality of places on the circumference, and when provided at a plurality of places, it is preferable to have a uniform arrangement.
  • a circumferentially cut groove 45 is provided at the atmosphere side end of the cylindrical portion 42 of the backup ring 41, and a circumferentially part (part) 14 a of the crimped portion 14 is circumferentially provided in the groove 45.
  • Engagement is performed by pressing the circumferential portion 14a of the caulking portion 14 into the groove 45 by caulking load during caulking, and the annular caulking portion 14 is annular after being pushed and engaged. It is a structure that maintains that.
  • roller caulking is performed instead of press caulking.
  • a required number of the kerfs 45 are provided on the circumference, that is, provided at one place or a plurality of places on the circumference.
  • the lip type seal 1 having the above-described configuration is used as a shaft seal for, for example, a water pump for automobiles as described above, and is characterized in that the following functions and effects are exhibited by the above-described configuration.
  • the first lip seal member 21 made of a rubber-like elastic body
  • the second lip seal member 31 made of a resin, and the like by the caulking load when the caulking portion 14 of the holding ring 11 is caulked.
  • the backup ring 41 is configured to be integrally held.
  • the resin-made second lip seal member 31 located in the middle and the adjacent backup ring 41 are provided with protrusions 44 provided on the backup ring 41.
  • the second fixed portion is engaged with the backup ring 41 and the holding ring 11 by being pushed into the groove 45 provided in the backup ring 41 by the caulking load on the circumferential portion 14a of the annular caulking portion 14.
  • a structure 62 is provided, whereby the backup ring 41 and the holding ring 11 are firmly fixed. Therefore, the resin-made second lip seal member 31, the backup ring 41 and the retaining ring 11 are firmly fixed by the first and second fixing structures 61, 62.
  • the lip seal member 31 can be prevented from rotating around the shaft 74 or displaced in the radial direction, and the sealing performance can be stabilized.
  • an inward flange portion 13 is provided at the end of the sealing fluid side of the retaining ring 11 as an alternative to the step-shaped retaining portion 82a in the prior art. Since the portion 13 does not hold the O-ring, the radial width can be set to an arbitrary size regardless of the diameter of the O-ring. Therefore, it is possible to suppress the occurrence of a situation in which the lip seal members 21 and 31 and the backup ring 41 cannot be firmly crimped and fixed as in the above-described prior art due to insufficient radial width.
  • the inward flange portion 13 can secure a sufficient radial width and can firmly fix both the lip seal members 21 and 31 and the backup ring 41 by caulking.
  • the outward flange portion 16 causes the inward flange portion to be integrated. 13 can be increased, and the insertion depth of the lip type seal 1 with respect to the shaft hole can always be constant.
  • the cylindrical portion 42 and the flange portion 43 are integrally provided on the backup ring 41, the protrusion 44 is provided on the end surface on the sealed fluid side of the latter flange portion 43, and the kerf 45 is provided on the atmosphere side end portion of the former cylindrical portion 42. Therefore, the resin-made second lip seal member 31 and the retaining ring 11 can be firmly connected via the backup ring 41 provided with the protrusions 44 and the cut grooves 45.
  • the second fixing structure 62 having a structure in which the circumferential portion 14a of the annular caulking portion 14 is engaged with the cut groove 45 by the caulking load is provided, there is no need to align the circumference. Assembling can be performed, and the assembling process of the lip type seal 1 can be facilitated.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Sealing With Elastic Sealing Lips (AREA)

Abstract

Selon l'invention, de façon à fixer fortement un second élément de joint d'étanchéité à lèvre en résine, qui est assemblé sur la circonférence interne d'une bague de retenue conjointement avec une bague de renfort et un premier élément de joint d'étanchéité à lèvre ayant une élasticité de type caoutchouc, une structure de fixation est disposée sur le second élément de joint d'étanchéité à lèvre et la bague de renfort, de telle sorte qu'une saillie disposée sur la bague de renfort empiète sur le second élément de joint d'étanchéité à lèvre au moyen d'une charge de calfeutrage et vient en prise avec celui-ci. En outre, une seconde structure de fixation est disposée sur la bague de renfort et la bague de retenue, de telle sorte qu'une partie de la circonférence d'une section de calfeutrage circulaire est introduite à force dans une incision disposée sur la bague de renfort au moyen d'une charge de calfeutrage, et vient en prise avec celle-ci.
PCT/JP2011/062052 2010-08-06 2011-05-26 Joint d'étanchéité à lèvre WO2012017726A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2011552267A JP5770109B2 (ja) 2010-08-06 2011-05-26 リップタイプシール

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Application Number Priority Date Filing Date Title
JP2010177348 2010-08-06
JP2010-177348 2010-08-06

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Publication Number Publication Date
WO2012017726A1 true WO2012017726A1 (fr) 2012-02-09

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102818031A (zh) * 2012-09-05 2012-12-12 重庆市嘉龙密封件制造有限公司 矿用无油自润滑油封
WO2020054843A1 (fr) * 2018-09-14 2020-03-19 イーグル工業株式会社 Dispositif d'étanchéité d'arbre de type à lèvre

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0530637U (ja) * 1991-05-17 1993-04-23 スターライト工業株式会社 温度補償型オイルシール
JP2002364759A (ja) * 2001-06-06 2002-12-18 Toyota Industries Corp リップシール
WO2008004303A1 (fr) * 2006-07-07 2008-01-10 Eagle Industry Co., Ltd. Dispositif de scellement d'un arbre
JP2009133465A (ja) * 2007-12-03 2009-06-18 Eagle Ind Co Ltd 密封装置

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0530637U (ja) * 1991-05-17 1993-04-23 スターライト工業株式会社 温度補償型オイルシール
JP2002364759A (ja) * 2001-06-06 2002-12-18 Toyota Industries Corp リップシール
WO2008004303A1 (fr) * 2006-07-07 2008-01-10 Eagle Industry Co., Ltd. Dispositif de scellement d'un arbre
JP2009133465A (ja) * 2007-12-03 2009-06-18 Eagle Ind Co Ltd 密封装置

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102818031A (zh) * 2012-09-05 2012-12-12 重庆市嘉龙密封件制造有限公司 矿用无油自润滑油封
CN102818031B (zh) * 2012-09-05 2015-04-15 重庆市嘉龙密封件制造有限公司 矿用无油自润滑油封
WO2020054843A1 (fr) * 2018-09-14 2020-03-19 イーグル工業株式会社 Dispositif d'étanchéité d'arbre de type à lèvre

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JP5770109B2 (ja) 2015-08-26
JPWO2012017726A1 (ja) 2013-10-03

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