EP2297490A1 - Bague d'étanchéité, ainsi que dispositif et procédé de montage d'une bague d'étanchéité - Google Patents

Bague d'étanchéité, ainsi que dispositif et procédé de montage d'une bague d'étanchéité

Info

Publication number
EP2297490A1
EP2297490A1 EP09768878A EP09768878A EP2297490A1 EP 2297490 A1 EP2297490 A1 EP 2297490A1 EP 09768878 A EP09768878 A EP 09768878A EP 09768878 A EP09768878 A EP 09768878A EP 2297490 A1 EP2297490 A1 EP 2297490A1
Authority
EP
European Patent Office
Prior art keywords
sealing ring
coupling member
component
ring
mounting device
Prior art date
Legal status (The legal status 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 status listed.)
Withdrawn
Application number
EP09768878A
Other languages
German (de)
English (en)
Inventor
Gerhard Lechler
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Promess Gesellschaft fur Montage- und Pruefsysteme Mbh
Original Assignee
Promess Gesellschaft fur Montage- und Pruefsysteme Mbh
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 Promess Gesellschaft fur Montage- und Pruefsysteme Mbh filed Critical Promess Gesellschaft fur Montage- und Pruefsysteme Mbh
Publication of EP2297490A1 publication Critical patent/EP2297490A1/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
    • B25B27/00—Hand tools, specially adapted for fitting together or separating parts or objects whether or not involving some deformation, not otherwise provided for
    • B25B27/0028—Tools for removing or installing seals
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
    • B23P19/00—Machines for simply fitting together or separating metal parts or objects, or metal and non-metal parts, whether or not involving some deformation; Tools or devices therefor so far as not provided for in other classes
    • B23P19/04—Machines for simply fitting together or separating metal parts or objects, or metal and non-metal parts, whether or not involving some deformation; Tools or devices therefor so far as not provided for in other classes for assembling or disassembling parts
    • B23P19/08—Machines for placing washers, circlips, or the like on bolts or other members
    • B23P19/084—Machines for placing washers, circlips, or the like on bolts or other members for placing resilient or flexible rings, e.g. O-rings, circlips
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/53—Means to assemble or disassemble
    • Y10T29/53687—Means to assemble or disassemble by rotation of work part

Definitions

  • the invention relates to a mounting device for mounting a sealing ring on or in a component, for example a shaft or a housing, with a coupling member for transmitting a mounting force on the sealing ring. Furthermore, the invention relates to a sealing ring which comprises a rubber-elastic base body and a stiffening ring, wherein the stiffening ring is at least partially embedded in the rubber-elastic base body, and a method for mounting a sealing ring on or in a component, wherein the sealing ring in the axial direction pushed onto or into the component.
  • Rotating or pivoting machine elements are lubricated for a long service life.
  • shaft seals which are used as rotary seals, often consist of a rubber-elastic base body, which is reinforced by a made of a stiffer material, such as metal, reinforcing ring.
  • Shaft seals conventionally have a rubber-elastic sealing lip, which rests on the inside of the sealing ring on the component to be sealed, for example, a shaft or axis.
  • a tension spring can be integrated, which generates a bias in the radial direction, inwardly acting.
  • Shaft seals are usually pushed in the axial direction on a shaft or in a bore, wherein an axial force is exerted in the mounting direction on the circumference of the sealing ring via a tool.
  • the assembly force usually exerted on the sealing ring in the axial direction should lie on the symmetry line of the sealing ring during assembly.
  • the assembly force should be as close as possible to the outside diameter.
  • US 3,030,702 describes a mounting plate for receiving the shaft seal, which is connected via a threaded rod with an adjustable stop for adjusting the axial mounting position of the sealing ring. Upon reaching a predetermined axial position of the shaft seal in the associated bore of the stop at the entrance of the bore.
  • the devices of US Pat. No. 4,515,376, US Pat. No. 3,165,949, DE 262 807 and US Pat. No. 4,550,486 each have two cylindrical elements, which fit into one another and are movable into one another.
  • the sealing ring is pushed onto the inner cylindrical element before assembly.
  • the sealing ring of the sealing ring can be arranged centrally.
  • a mounting force is exerted on the circumference of the sealing ring.
  • the US 5,052,695, DE 2340275 B, DE 3503602 C1 and EP 0794037 B1 show mounting rings for shaft seals.
  • the mounting ring of US 5,052,695 and DE 2340275 B is inserted via a sleeve-shaped extension in the shaft seal, on which rests the sealing lip of the shaft seal.
  • the mounting ring of DE 3503602 C1 is locked to the inner circumference of the sleeve-shaped shell part of the shaft seal.
  • the mounting ring of EP 0794037 B1 should be suitable in particular for the assembly of shaft sealing rings with races for the sealing lips.
  • the air side or bottom side of the shaft seal is in each case against a support surface of the tool, via which an axial assembly force is transmitted to the shaft seal.
  • the shaft seal can be held in accordance with the US 5,052,695 via adhesive or elastic extensions on the mounting ring.
  • the US 6,370,751 B1 is concerned with a mounting aid for shaft sealing rings, which consists essentially of a conically shaped metal cap. While the metal cap rests with its edge on the sealing ring, the assembly force can be transmitted to the shaft seal via a centrally arranged on the metal cap piece of wood.
  • the US 5,709,018 deals with a disassembly tool for disassembly of oil seals with a gripper, which engages in the pressure side of the shaft seal.
  • the gripper is substantially cylindrically shaped and provided on its side facing the sealing ring with longitudinally extending slots.
  • a conical bore in the gripper rests on a conical flange connected to the threaded rod.
  • the sealing ring For a reliable sealing of the components, the sealing ring must be arranged centrally and at right angles to the component even after the assembly process. During the pressing in, the sealing ring deforms under the influence of the assembly force due to its geometry and the low rigidity of the sealing materials. For example, when inserting a shaft sealing ring into a bore at the end of the insertion movement, an elastic deformation of the sealing ring remains, which remains due to the static friction between the sealing ring and bore. This elastic deformation leads after the removal of the assembly force to a spring back and thus to a shift or tilting of the sealing ring. Such displacements cause the sealing ring is no longer arranged centrally and perpendicular to the component and thus the sealing surfaces do not rest uniformly on the machine elements to be sealed, i. a reliable sealing effect is no longer guaranteed.
  • the present invention is therefore based on the object to improve the assembly of sealing rings of the type mentioned above such that a centric and rectangular position of the sealing ring is ensured after removal of the assembly force.
  • the invention solves the problem by a rotary drive is provided, through which a relative rotation between the sealing ring and component can be generated.
  • the mounting device according to the invention can be further developed by different, mutually independent, each advantageous embodiments.
  • the coupling member may comprise at least one positive-locking element.
  • This form-fitting element can be designed as an extension which engages in a corresponding recess in the sealing ring.
  • the coupling member may comprise a form-locking element, which is designed as a recess and receives corresponding, associated extensions of the sealing ring.
  • the positive-locking element designed as an extension or as a recess enables a positive-locking transmission of the circumferential force acting in the circumferential direction of the sealing ring, transmitted by the rotary drive. Compared to a purely frictional connection between the coupling member and sealing ring thus significantly larger circumferential forces or acting around the axis of symmetry of the sealing ring torques can be transmitted.
  • the positive locking element also allows attachment of the sealing ring to the coupling member of the mounting device before it is mounted on or in a component. In this way, the sealing ring with the aid of the mounting device relative to the component can be arranged at right angles and centered, so that tilting of the sealing ring is avoided during assembly.
  • the mounting device may have centering extensions, which are used in the assembly in a center hole of the component.
  • the extension can be configured as part of a cylindrical portion of the mounting device in the form of a shoulder, which is used during assembly, for example, in the receiving bore for the sealing ring.
  • the mounting device may be provided with a centering bore for receiving a centering extension or a shoulder of the component.
  • the form-fitting element may have undercuts with at least one surface running essentially obliquely to the axial direction or to the mounting direction.
  • the surface running obliquely to the axial direction can be paired with a complex one. mentarily configured undercut of the sealing ring rest on a surface extending obliquely to the axial direction of the sealing ring.
  • the interlocking elements can be configured as detents, so that a locking of the positive locking element in a corresponding recess or a corresponding extension of the sealing ring is possible.
  • a positive connection between the coupling member and sealing ring can be realized, which allows transmission of forces in the circumferential direction of the sealing ring as well as in the axial direction in and against the mounting direction.
  • the coupling member may have at least one substantially circumferentially facing stop surface.
  • This stop surface may be an integral part of a positive locking element or be arranged separately from the positive locking elements on the coupling member.
  • the stop surface should have the preferred direction of rotation during assembly, so that it can transmit the rotational force generated by the rotary drive on the sealing ring when hitting a corresponding configured counter surface of the sealing ring.
  • the stop surface may have at least one undercut, so that upon rotation of the coupling member by the rotary drive, the stop surface on a corresponding mating surface of the sealing ring, which is parallel to the stop surface and adjacent to the stop surface generates a force through which the coupling member and sealing ring pressed together become.
  • the coupling member may have a closable on at least one side of the sealing ring configured and connected to a vacuum line vacuum chamber.
  • a negative pressure is generated, creating a suction force that pulls the sealing ring to the coupling member.
  • the surrounding the vacuum chamber surfaces of the coupling member, which adjoin the sealing ring are pressed by suction on the sealing ring and thus form a frictional connection with the adjacent surfaces of the sealing ring, which allows a slip-free transmission of the rotational forces caused by the rotary peripheral forces on the sealing ring ,
  • the vacuum chamber may be adjacent to the axially facing surface of the air side of the shaft seal for the assembly of conventional shaft seals. If the space available during assembly allow this, the vacuum chamber can also be adjacent to an axially facing surface of the end face of the shaft seal or sealed by the radially outwardly facing support surface of the shaft seal.
  • the object is achieved by the sealing ring has at least one substantially circumferentially facing stop surface.
  • the abutment surface of the sealing ring may have at least one undercut according to stop surface of the above-mentioned mounting device. In this way, acting in the axial direction positive engagement is possible between the stop surface of the sealing ring and a correspondingly configured stop surface of the mounting device. If the undercut forms a plane essentially in a direction oblique to the axial direction or mounting direction, the pairing with a correspondingly configured mating surface of the mounting device causes the sealing ring to be pulled against the mounting device upon introduction of a rotational force by the mounting device and a frictional connection between Sealing ring and mounting device is created.
  • the sealing ring can be provided according to the mounting device on an externally accessible mounting contact surface with at least one positive locking element.
  • the interlocking element can be configured as an extension, which can be inserted into a corresponding recess of the mounting device, or as a recess, the one corresponding extension of the mounting device receives.
  • Such a form-locking element allows the attachment of the sealing ring to the mounting device, so that the sealing ring can be connected before its installation with the mounting device. In this way, with the help of the mounting device also poorly accessible components can be achieved to mount the sealing ring.
  • a mounting device provided with a centering device can be used to position the sealing ring at a right angle and centered to the sealing ring receptacle before it is pushed into or onto the component.
  • this may have a coupling member which is glued to the sealing ring.
  • the adhesive bond between the sealing ring and coupling member may have a strength which allows the transmission of the assembly force, but is below a predetermined value, beyond which the coupling member is released by a force introduced via the mounting device of the sealing ring. It can, for example, be glued to the coupling member in the axial direction facing surface of the air or bottom side of the sealing ring, since this is large enough in conventional shaft sealing rings to form suitable, high-strength adhesive bonds for the assembly of the sealing ring.
  • the coupling member may have heels on which the sealing ring is pushed at least in sections.
  • the object is achieved in that the sealing ring for its assembly is not only pushed onto or into the component, but is additionally rotated relative to the component.
  • the sealing ring can be turned into or onto the component during insertion or sliding. By superimposing the pushing and turning movements, the assembling process is shortened as a whole.
  • the rotation of the sealing ring can be limited to a portion of the assembly movement, which is shortly before reaching the end position of the sealing ring. In this way, the relative movement between the sealing ring and component and thus the friction caused by heating is limited.
  • the sealing ring can only be pushed into or onto the component and only turned on reaching its axial end position. In this way, a possibly increased wear of the sealing ring is completely avoided by the superposition of the sliding and the rotational movement.
  • Fig. 1 is a schematic sectional view of a first embodiment of the invention
  • FIG. 2 is a schematic sectional view of a prior art rotary shaft seal
  • FIG. 3 is a schematic sectional view of a first embodiment of the sealing ring according to the invention.
  • FIG. 4 is a schematic sectional view of a second embodiment of the sealing ring according to the invention.
  • FIG. 5 is a schematic sectional view of a conventional shaft seal with a detail of an embodiment of the assembly device according to the invention
  • Fig. 6 is a schematic side view of a third embodiment of the sealing ring according to the invention
  • Fig. 7 is a schematic sectional view of a detail of the third embodiment of the sealing ring according to the invention at the point VII-VII of FIG.
  • FIG. 8 is a schematic side view of a fourth embodiment of the sealing ring according to the invention.
  • FIG. 9 is a schematic sectional view of a section of the fourth embodiment of the sealing ring according to the invention at the point VIII-VIII of FIG.
  • Fig. 10 is a schematic sectional view of a detail of a fifth embodiment of the sealing ring according to the invention.
  • a sealing ring 1 is shown, which is inserted into a component 2.
  • the sealing ring 1 adjoins a mounting device 3, which exerts a mounting force F on the sealing ring 1 via a coupling member 4.
  • the sealing ring 1, the component 2 and the mounting device 3 are constructed symmetrically to an axis of symmetry S, wherein in each case only the half lying above the axis of symmetry S is shown.
  • the mounting force F pointing in a mounting direction Z or in the axial direction lies on the plane of symmetry S and is transmitted from the mounting device 3 via the coupling member 4 to the sealing ring 1.
  • the sealing ring is pushed in this way in the mounting direction Z and in the direction of the axis of symmetry S in the component 2, which has a bore 5 for receiving the sealing ring 1.
  • the component 2 is provided with a shoulder 6 which defines the end of the bore 5 and thus the end position of the sealing ring 1.
  • a torque M is introduced into the coupling member 4 via the mounting device 3, which is transmitted via a mounting contact surface 7 on the sealing ring 1.
  • the torque M acts around the axis of symmetry of the sealing ring S.
  • the mounting contact surface 7 is not shown here Form gleich- or traction elements, which are exemplified in the following figures in various embodiments.
  • the mounting device 3 To generate the torque M, the mounting device 3, a rotary drive 8, which generates a moment M which is large enough to overcome the static friction between the sealing ring 1 and adjacent to the sealing ring 1 surfaces of the component 2. While the sealing ring 1 initially adjoins only the inner surface of the bore 5, it meets in the mounting end position on the sealing ring 1 facing surface of the paragraph 6. Also increased with this additional contact surface static friction is able to overcome the rotary drive 8.
  • the torque M of the rotary drive 8 passes through a shaft 9 and a shaft-hub connection 10 in the coupling member 4.
  • the shaft-hub connection 10 can be used as frictional shaft-hub connection 10, for example a press connection, as a form-fitting shaft hub Compound 10, for example, a splined or toothed shaft connection, or designed as cohesive connection 10.
  • the sealing ring 1 comprises a rubber-elastic base body 11 which encloses a stiffening ring 12.
  • the sealing ring 1 is provided with a sealing lip 13, which is held by a circumference of the sealing lip 13 enclosing tension spring 14 under tension.
  • the tension spring 14 is arranged in a spring groove 15, which is bounded by a spring retaining collar 16 on the end face of the shaft seal 1. Below the tongue groove 15, the sealing lip 13 has a sealing edge 17.
  • the biased tension spring 14 generates a spring force which presses in the direction of the spring line 18 on the circumference of the sealing lip 13.
  • the sealing edge 17 is held on the enclosed by the sealing ring 1 component.
  • the sealing ring 1 is surrounded at its outer periphery by an outer casing 20 which is formed by a portion of the rubber-elastic base body 11. Likewise is one On the bottom side B or air side B of the sealing ring 1 located bottom surface 21 formed by the rubber-elastic body 11.
  • Fig. 3 shows a first embodiment of the sealing ring according to the invention, wherein for elements which correspond in function and structure to the elements of the sealing ring shown in Fig. 2 from the prior art, the same reference numerals are used.
  • the stiffening ring 12 occurs on the end face A of the sealing ring 1 from the rubber-elastic body 11. It has a recess 22, which comprises a stop surface 23, which runs parallel to the axial direction S or mounting direction Z, but perpendicular to the circumferential direction U.
  • the recess 22 serves to receive a suitably designed extension of the coupling member 4, so that in the circumferential direction U acting assembly forces can be transmitted from the coupling member 4 on the sealing ring 1.
  • the stiffening ring 12 may have a plurality of recesses 22 which are distributed at constant angular intervals over the circumference of the stiffening ring 12 in order to avoid a circumferential displacement caused by lateral forces of the sealing ring 1 during the assembly process.
  • the recess 22 may be undercut, so that the stop surface 23 extends obliquely to the circumferential direction U.
  • a form-fitting element 24 is provided which serves to receive a provided on the coupling member 4 complementary positive-locking element 25. Circumferential forces or torques can also be transmitted to the sealing ring 1 during assembly on the form-locking elements 24 and 25.
  • the positive locking elements 24, 25 allow attachment of the sealing ring to the coupling member 4 of the mounting device 3, so that the position of the sealing ring 1 is fixed in relation to the mounting device 3 before the start of assembly.
  • the mounting device 3 may have at least one centering member for centering the coupling member 4 relative to the component, so that the position of the sealing ring 1 on the Attachment to the mounting device 3 is clearly defined before the assembly process against the component.
  • the centering element can be designed, for example, as an extension which is inserted into recesses of the component or as a recess which receives an extension of the component.
  • Fig. 4 shows a further embodiment of the sealing ring according to the invention, wherein for elements which correspond in function and structure to the elements of the embodiment of Figure 3, the same reference numerals are used. For the sake of brevity, the differences from the exemplary embodiment of FIG. 3 will be discussed.
  • the sealing ring 1 is provided on its bottom side B with a positive-locking element 26 in the form of a recess 26.
  • the recess 26 intersects both the elastomeric base body 11 and the stiffening ring 12.
  • the coupling member 4 of the mounting device 3 can engage from the bottom side B of the sealing ring 1 in the form-fitting element 26 in the embodiment of Figure 4 .
  • the recess 26 also intersects the stiffening ring 12, relatively large circumferential forces can be transmitted to the sealing ring 1, which allow for overcoming the static friction between outer jacket 20 of the sealing ring 1 and the component with mounted sealing ring 1.
  • FIG. 5 shows a sectional view of a conventional shaft seal with a detail of an embodiment of a mounting device according to the invention 3.
  • the coupling member 4 of the mounting device 3 is located on the bottom surface 21 of the sealing ring 1 at.
  • the coupling member 4 has a vacuum chamber 27 into which a vacuum line 28 opens.
  • the medium located in the vacuum chamber 27 can be transported in the direction of the suction, so that in the vacuum chamber 27, a negative pressure is formed, which is adjacent to the vacuum chamber 27 sealing ring to the coupling member draws.
  • the adjacent to the bottom surface 21 of the sealing ring 1 bearing surfaces 29 of the coupling member 4 seal off the vacuum chamber 27 from the environment.
  • the pressure produced between the bearing surfaces 29 and the bottom surface 21, the negative pressure in the vacuum chamber 27 corresponding contact pressure ensures a frictional connection between the coupling member 4 and sealing ring 1, on the peripheral forces or Torques from the mounting device 3 can be transmitted to the sealing ring 1.
  • Fig. 6 shows a third embodiment of the sealing ring 1 according to the invention, wherein for elements which correspond in function and structure to the elements of the embodiments of Figures 3 and 4, the same reference numerals are used. For brevity, the differences to the embodiments of Figures 3 and 4 will be discussed.
  • arcuate extensions 30 are arranged, which widen in the direction of the outer shell 20. Due to the arcuate profile of the extensions 30, the surface load on the flanks of the extensions 30 is reduced.
  • FIG. 7 shows a detail of the third exemplary embodiment of the outer sealing ring according to the invention at the point VI-VII of FIG. 6.
  • the bottom surface 21 is formed by the stiffening ring 12, which has extensions 30 and depressions 31 with a substantially rectangular profile. In the recesses 31 of the stiffening ring 12 engage extensions 36 of a correspondingly shaped coupling member 4, while depressions 38 in the coupling member 4 receive the projections 30 formed by the stiffening ring 12.
  • the coupling member 4 is placed centrally on the symmetry line S of the sealing ring 1 on the bottom surface 21, enclose the recesses 38 on the coupling member 4, the extensions 30 and transferred in this way applied by the rotary drive of the mounting device circumferential force.
  • variable over the diameter of the sealing ring 1 slope of the profile lines of the extensions 30 allows a wedge effect between the extensions 30 and the corresponding the recesses 38 of the coupling member, which fixes the frictional connection between the sealing ring 1 and coupling member 4.
  • the coupling member is rotated about the symmetry axis S after placing on the bottom surface 21 relative to the sealing ring 1, the side surfaces 39, 40 move towards each other.
  • the extensions 30, 36 deforming elastically with this movement creates a bias between the side surfaces 39, 40, which increases the static friction between the side surfaces 39, 40.
  • the arcuate side surfaces 39 of the extensions 30 thus wedge with the side surfaces 40 of the corresponding recesses 38 of the coupling member.
  • FIG. 8 shows a fourth exemplary embodiment of the sealing ring according to the invention in a schematic side view.
  • FIG. 8 shows a fourth exemplary embodiment of the sealing ring according to the invention in a schematic side view.
  • the bottom surface 21 of the sealing ring 1 has extensions 30 and recesses 31, which are connected to each other via bevels 32.
  • the extensions 30, recesses 31 and the bevels 32 each extend perpendicular to the circumference of the sealing ring 1, wherein they widen away from the marked by the line of symmetry S center away.
  • Fig. 9 shows a sectional view of the fourth embodiment of the sealing ring 1 at the point VIII-VIII of Fig. 8 and a sectional view of a section of the coupling member 4 of another exemplary embodiment of the mounting device.
  • the geometry of the bottom surface 21 is determined by the stiffening ring 12, which corresponding to the bottom surface 21 recesses 33, slopes 34 and extensions 35 has.
  • the recesses 33, slopes 34 and extensions 35 stiffen the stiffening ring 12 in addition.
  • the stiffening ring 12 is enveloped by the rubber-elastic base body 11, so that the bottom surface 21 is formed by the rubber-elastic body and supported by the underlying stiffening ring 12.
  • the complementarily shaped coupling member 4 has extensions 36, bevels 37 and recesses 38.
  • the coupling member 4 is placed on the bottom surface 21, so that the recesses 38 of the coupling member 4 extensions 30 of the bottom surface 21 record while recesses 31 of the bottom surface 21 record extensions 36 of the coupling member. In this way, a positive connection, which allows the positive transmission of forces in the circumferential direction U.
  • FIG 10 A fifth embodiment of the sealing ring according to the invention is shown in FIG 10, wherein the same reference numerals are used for elements that correspond in function and structure of the elements of the embodiments of Figures 3, 4, 6, 7 and 8. For brevity, the differences to the previous embodiments will be discussed.
  • the bottom surface 21 of the sealing ring 1 has extensions 30, bevels 32, 32 'and depressions 31.
  • the stiffening ring 12 is not surrounded on its outer side by the rubber-elastic base body 11 and thus forms the bottom surface 21. Due to the harder surface of the stiffening ring 12, which is preferably made of metal, during assembly over the intervening Clutch member 4 larger surface loads and thus greater circumferential forces are initiated.
  • the stiffening ring 12 has undercuts, which are formed by the slopes 32 '. In the undercuts formed by the bevels 32 'engage the projections 36 of the coupling member 4 during assembly.
  • the bevels 37 'of the coupling member 4 are on the slopes 32' of the stiffening ring 12. Since the bevels 32 'and 37' designed as undercuts run obliquely to the direction of rotation D, the introduction of a peripheral force acting in the direction of rotation D via the coupling member 4 causes the extensions 30 to slide into the depressions 38 or extensions 36 into the depressions 31.
  • the embodiment of the sealing ring 1 shown with the corresponding embodiment of the coupling member 4 is suitable both for the assembly and for a non-destructive disassembly of a shaft seal. 1
  • the sealing rings of the invention can be configured according to the known from the prior art embodiments with two or more zugfederbelasteten sealing lips, without tension spring or without dust lip.
  • the stiffening ring may alternatively adjoin the inner or the outer side of the sealing ring to the rubber-elastic body.
  • an additional stiffening ring may be provided in the form of a cap.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Sealing Devices (AREA)

Abstract

L'invention concerne un dispositif de montage (3) destiné au montage d'une bague d'étanchéité (1) sur ou dans une pièce (2), par exemple un arbre ou un carter, à l'aide d'un organe d'accouplement (4) destiné à transmettre une force de montage (F) à la bague d'étanchéité (1). L'invention concerne par ailleurs une bague d'étanchéité (1) qui comprend un corps principal (11) élastique en caoutchouc et un anneau de renforcement (12). L'anneau de renforcement (12) est au moins partiellement noyé dans le corps principal (11) élastique en caoutchouc. L'invention concerne par ailleurs un procédé de montage d'une bague d'étanchéité (1) sur ou dans une pièce (2), la bague d'étanchéité (1) étant poussée sur ou dans la pièce (2) dans la direction axiale. L'invention vise à améliorer le montage de bagues d'étanchéité (1) du type mentionné en vue d'obtenir une position centrée et perpendiculaire de la bague d'étanchéité (1) après suppression de la force de montage. A cet effet, il est prévu pour le dispositif de montage (3) un mécanisme d'entraînement en rotation (8) permettant de produire une rotation relative entre la bague d'étanchéité (1) et la pièce (2). Lors du montage, la bague d'étanchéité (1) subit une rotation par rapport à la pièce (2) et possède à cette fin une surface de butée (23, 32, 32') orientée essentiellement dans la direction de la circonférence (U).
EP09768878A 2008-06-27 2009-05-25 Bague d'étanchéité, ainsi que dispositif et procédé de montage d'une bague d'étanchéité Withdrawn EP2297490A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102008030174A DE102008030174A1 (de) 2008-06-27 2008-06-27 Dichtring sowie Vorrichtung und Verfahren zur Montage eines Dichtringes
PCT/EP2009/003678 WO2009156029A1 (fr) 2008-06-27 2009-05-25 Bague d'étanchéité, ainsi que dispositif et procédé de montage d'une bague d'étanchéité

Publications (1)

Publication Number Publication Date
EP2297490A1 true EP2297490A1 (fr) 2011-03-23

Family

ID=40910874

Family Applications (1)

Application Number Title Priority Date Filing Date
EP09768878A Withdrawn EP2297490A1 (fr) 2008-06-27 2009-05-25 Bague d'étanchéité, ainsi que dispositif et procédé de montage d'une bague d'étanchéité

Country Status (4)

Country Link
US (1) US20110121513A1 (fr)
EP (1) EP2297490A1 (fr)
DE (1) DE102008030174A1 (fr)
WO (1) WO2009156029A1 (fr)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102011015228A1 (de) * 2010-08-10 2012-02-16 Carl Freudenberg Kg Radialwellendichtring mit Formschlusselementen
US10088052B2 (en) * 2015-09-22 2018-10-02 Aktiebolaget Skf Method of manufacturing a seal
JP6678556B2 (ja) * 2016-10-27 2020-04-08 株式会社バルカー 分割シールリング圧入用治具
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FR3079154B1 (fr) * 2018-03-21 2020-02-28 Psa Automobiles Sa Procede de montage d’un joint a levre avec un manchon de protection retire par une depression
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US20110121513A1 (en) 2011-05-26
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