WO2020043444A1 - Dispositif d'étanchéité et pièce de machine pour un tel dispositif d'étanchéité - Google Patents

Dispositif d'étanchéité et pièce de machine pour un tel dispositif d'étanchéité Download PDF

Info

Publication number
WO2020043444A1
WO2020043444A1 PCT/EP2019/071137 EP2019071137W WO2020043444A1 WO 2020043444 A1 WO2020043444 A1 WO 2020043444A1 EP 2019071137 W EP2019071137 W EP 2019071137W WO 2020043444 A1 WO2020043444 A1 WO 2020043444A1
Authority
WO
WIPO (PCT)
Prior art keywords
seal
circumferential surface
machine part
area
sealing
Prior art date
Application number
PCT/EP2019/071137
Other languages
German (de)
English (en)
Inventor
Reinhold WALDEIER
Andreas Fritz
Original Assignee
Parker Hannifin Emea S.A.R.L.
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 Parker Hannifin Emea S.A.R.L. filed Critical Parker Hannifin Emea S.A.R.L.
Publication of WO2020043444A1 publication Critical patent/WO2020043444A1/fr

Links

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
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L21/00—Joints with sleeve or socket
    • F16L21/02—Joints with sleeve or socket with elastic sealing rings between pipe and sleeve or between pipe and socket, e.g. with rolling or other prefabricated profiled rings
    • F16L21/025—Rolling sealing rings
    • 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
    • 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
    • F16J15/061—Sealings between relatively-stationary surfaces with solid packing compressed between sealing surfaces with positioning means
    • 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
    • F16J15/062—Sealings between relatively-stationary surfaces with solid packing compressed between sealing surfaces characterised by the geometry of the seat
    • 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
    • F16J15/104—Sealings between relatively-stationary surfaces with solid packing compressed between sealing surfaces with non-metallic packing characterised by structure
    • F16J15/106—Sealings between relatively-stationary surfaces with solid packing compressed between sealing surfaces with non-metallic packing characterised by structure homogeneous

Definitions

  • the present invention relates to a sealing arrangement, in particular for sealing between a first machine part and a second machine part.
  • the present invention further relates to a machine part, in particular a cover, for mounting in or on a further machine part.
  • the radial seal in a bore usually requires an insertion bevel on one of the two machine parts to be sealed against each other, otherwise the seal will be destroyed during assembly. Often, however, there is no space to implement such a chamfer or chamfer on the machine part, or the existing design cannot be changed, e.g. in a flange seal. Even a seal designed as an O-ring does not remedy such designs.
  • the present invention has for its object to provide a seal assembly and a corresponding machine part, in particular a lid, which allow easy and non-destructive assembly of the seal with improved sealing effect.
  • a sealing arrangement is provided with
  • a first machine part with a first end section with a first end surface and a first circumferential surface
  • a second machine part with a second end section with a second end surface and a second circumferential surface for mounting in or on the first end section of the first machine part, so that in the assembled state the second end surface is opposite the first end surface and the second circumferential surface of the second circumferential surface che is opposite, and
  • annular seal with a polygonal cross section for mounting in an installation space formed between the second circumferential surface and the first circumferential surface
  • the second circumferential surface of the second machine part has a seal mounting area, a seal seat area and a seal rolling area located therebetween, the seal seat area being closer to the second end face than the seal mounting area,
  • the distance between the second circumferential surface and the first circumferential surface being smaller in the region of the seal rolling region than in the region of the seal assembly region and the seal seat region
  • seal seat area extends obliquely to the first circumferential surface, starting from the seal rolling area increasing distance from the first circumferential surface, and wherein the thickness of the seal in the direction transverse to the first circumferential surface is greater than the distance between the seal mounting region and the first circumferential surface.
  • a machine part in particular a lid, is also used
  • the second circumferential surface of the second machine part has a seal mounting area, a seal seat area and a seal roll area located therebetween the seal seat area being closer to the second end surface than the seal assembly area,
  • the distance between the second circumferential surface and the first circumferential surface being smaller in the region of the seal rolling region than in the region of the seal assembly region and the seal seat region
  • seal seat area extends obliquely to the first circumferential surface, starting at the seal rolling area increasing distance from the first circumferential surface, and wherein the second circumferential surface with the first circumferential surface forms an installation space for mounting an annular seal with a polygonal cross section.
  • the solution according to the invention makes a usually required lead-in chamfer or chamfer on the machine part, in or on which the further machine part to be assembled (e.g. a cover) is to be mounted, superfluous.
  • a special contour of the sealing seat and the seal creates a snap-in function according to the invention, which brings the machine part to be assembled into the final assembly position, where it is held by the special contour of the installation space.
  • This function thus means that the fixing of the machine part to be assembled, which is usually necessary, in order to hold it in this final assembly position, is superfluous. This makes handling very easy and eliminates the risk of incorrect assembly. Constructions without this contour show a remaining axial assembly force that tries to push the machine part to be assembled out again, which is why fastening elements are usually required to carry this additional load.
  • Sealing roll area is stepped, cone-shaped, rounded or sawtooth-shaped.
  • the sealing roll-off area preferably has the least on both sides of the point
  • the seal mounting area runs essentially parallel to the first circumferential surface. This makes it easier to insert and hold the seal when inserting it into the installation space.
  • the seal can basically have different cross sections.
  • the seal preferably has a triangular cross section, in particular in the form of an equilateral or isosceles triangle.
  • a triangular cross-section enables advantageous rolling behavior and a secure fit in the end position.
  • the seal has a square, hexagonal, octagonal or round cross section.
  • the second end section has at its end facing away from the second end surface a projection which extends to the first circumferential surface and which adjoins the seal assembly area. This protrusion helps in particular to keep the seal in its initial assembly position and to prevent it from slipping off the machine part to be assembled during assembly.
  • Seal arrangement is used in the seal assembly area and that the seal after assembly of the seal arrangement is arranged essentially between the seal seat area, the seal rolling area and the first circumferential surface. The seal thus rolls through the assembly over the sealing roll area and then automatically maintains its position in its end position.
  • the thickness of the seal in the direction transverse to the first circumferential surface is preferably in the range from 5 to 50%, in particular in the range from 10 to 30%, greater than the distance between the seal assembly region and the first circumferential surface. As a result, the seal is unrolled and pressed between the machine elements without being damaged. [0014] The cross section of the seal towards the first circumferential surface is preferably reduced.
  • the second machine part is designed such that it has a larger cross section in its end region and is plugged onto the first machine part, the end region of which it overlaps.
  • the first end surface is an inner end surface
  • the second end surface is an inner end surface
  • the first circumferential surface is an outer circumferential surface
  • the second circumferential surface is an inner circumferential surface.
  • the second machine part is designed such that it has a smaller cross section in its end region and is inserted into the first machine part, in the end region of which it engages.
  • the first end surface is an outer end surface
  • the second end surface is an outer end surface
  • the first peripheral surface is an inner peripheral surface
  • the second peripheral surface is an outer peripheral surface.
  • the machine part which is designed in particular as a cover, can be further developed in a corresponding manner as explained above in relation to the sealing arrangement.
  • FIG. 1 shows a cross section of a first embodiment of the seal arrangement according to the invention in an initial installation position of the seal
  • FIG. 2 shows a cross section of the first embodiment of the seal arrangement according to the invention shown in FIG. 1 in an end position of the seal
  • 3 shows an enlarged section of the first embodiment of the sealing arrangement according to the invention shown in FIGS. 1 and 2 in various positions from the installation of the seal to the final position
  • FIG. 5 shows a cross section of a second embodiment of the seal arrangement according to the invention in an initial installation position of the seal
  • FIG. 6 shows a cross section of the second embodiment of the seal arrangement according to the invention shown in FIG. 5 in an end position of the seal.
  • Fig. 1 shows a cross section of a first embodiment of the invention
  • FIG. 2 shows a cross section of the first embodiment of sealing arrangement 100 according to the invention shown in FIG. 1 in an end position of seal 3.
  • the sealing arrangement 100 has a first machine part 1, a second machine part
  • the first machine part 1 can, for example, be a compressor (air compressor) in the automotive sector, on which the second machine part 2 is mounted as a cover.
  • the first machine part 1 has a first end portion 10 with a first (in this
  • the second machine part 2 has a second end section 20 with a second (in this embodiment inner) end surface 21 and a second (in this embodiment inner) circumferential surface 22 for mounting on the first end section 10 of the first machine part 1.
  • Die respective surfaces are dimensioned and shaped so that in the assembled state (see FIG. 2) the second end surface 21 is opposite the first end surface 11 and the second circumferential surface 22 is opposite the second circumferential surface 12.
  • the annular seal 3 has a polygonal cross section for mounting in an installation space 4 formed between the second circumferential surface 22 and the first circumferential surface 12.
  • the seal 3 has a triangular cross section, the sides being an equilateral Form a triangle.
  • the second circumferential surface 22 of the second machine part 2 has a seal mounting area 23, a seal seat area 24 and a seal rolling area 25 lying therebetween, the seal seat area 24 being closer to the second end face 21 than the seal mounting area 23.
  • the distance between the second circumferential surface 22 and the first circumferential surface 12 is smaller than in the area of the seal mounting area 23 and the seal seat area 24.
  • the seal seat area 24 runs obliquely to the first circumferential surface 12, starting with the seal rolling area 25 increasing distance from the first circumferential surface 12.
  • the thickness of the seal 3 in the direction transverse to the first circumferential surface 12 is greater than the distance between the seal mounting region 23 and the first circumferential surface 12.
  • the seal 3 is introduced by a rolling process and not by a sliding process, as in the case of conventional comparable sealing arrangements.
  • the proposed geometry of the seal and the installation space, which is determined in particular by the geometry of the second machine part, the desired defined positioning of the seal 3 is achieved.
  • FIG. 3 shows an enlarged section of the first shown in Figs. 1 and 2
  • Embodiment of the sealing arrangement 100 according to the invention in various positions from the installation of the seal to the final assembly.
  • the position shown in FIG. 3A corresponds to the installation position shown in FIG. 1
  • the position shown in FIG. 3E corresponds to the mounting position shown in FIG. 2
  • that in FIGS. 3B, 3C and 3D positions shown correspond to corresponding intermediate positions during assembly.
  • the seal 3 attached at the right place in the specially designed contour begins to roll when the edge 13 of the first machine part 1 touches the contour of the inner circumferential surface 22 of the second machine part 2.
  • This movement makes it possible to realize the radial deformation of the seal 3 which can be seen in FIGS. 3C and 3D without the seal 3 sliding and cutting.
  • the special seal cross-section in connection with the geometry of the second machine part 2 thus allows the seal 3 to roll into the end position (assembly position).
  • Machine part 2 touches the end face 1 1 of the first machine part 1, the compression required for proper sealing.
  • FIG. 4 shows the assembly force of the second machine part over the assembly path
  • the force required to push the second machine part 2 onto the first machine part 1 initially increases due to the deformation of the seal 3. If the maximum assembly force is overcome, the special contour of the installation space leads to a decreasing assembly force and even converts it into a negative value, i.e. the first machine part 1 is pulled into the final position during the final assembly.
  • the first machine part 1 can no longer fall off the second machine part 2, as a result of which other usual fastening means, such as screws or clamps, are either completely eliminated or at least with regard to them their number and / or fastening force can be reduced.
  • other usual fastening means such as screws or clamps
  • Fig. 5 shows a cross section of a second embodiment of the invention
  • FIG. 6 shows a cross section of the second embodiment of the seal arrangement 200 according to the invention shown in FIG. 5 in an end position of the seal 3.
  • the first machine part 1 here has a larger one Cross-section and is designed as a bore into which the second machine part 2 is inserted.
  • the first end surface 11 is an outer one End surface
  • the second end surface 21 an outer end surface
  • the first circumferential surface 12 an inner circumferential surface
  • the second circumferential surface 22 an outer circumferential surface.
  • the design is fundamentally identical and the mode of operation is also equivalent to the design and mode of operation of the sealing arrangement 100.
  • the assembly force is converted into a negative value by the special contour of the sealing seat, ie the second machine part 2 is in the final assembly pulled into the hole, which is perceived as snapping.
  • the solution according to the invention allows the first machine part to be used as it is, that is to say with an unsuitable or also without an insertion slope.
  • the assembly forces that occur are lower than with conventional solutions.
  • no lubrication is required according to the invention; however, the seal assembly can also be lubricated, i.e. work with very low coefficients of friction and fulfill the desired function.
  • the sealing body preferably consists of an elastomer, in particular PA, PK,

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Geometry (AREA)
  • Sealing Using Fluids, Sealing Without Contact, And Removal Of Oil (AREA)

Abstract

La présente invention concerne un dispositif d'étanchéité (100), qui comprend une première partie de machine (1), une deuxième partie de machine (2) devant être montée sur la première partie de machine (2), p. ex. en tant que couvercle, et un joint annulaire (3) disposé entre celles-ci. Pour l'amélioration du montage et de l'effet d'étanchéité, le joint (3) et le contour de la deuxième partie de machine (2) sont conçus de telle façon que le joint (3) parvient durant le montage par un processus de déroulement d'une position d'installation initiale à une position de montage finale dans laquelle il est maintenu par le contour spécial de l'espace de montage (4).
PCT/EP2019/071137 2018-08-30 2019-08-06 Dispositif d'étanchéité et pièce de machine pour un tel dispositif d'étanchéité WO2020043444A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102018121255.0 2018-08-30
DE102018121255.0A DE102018121255A1 (de) 2018-08-30 2018-08-30 Dichtungsanordnung und Maschinenteil für eine solche Dichtungsanordnung

Publications (1)

Publication Number Publication Date
WO2020043444A1 true WO2020043444A1 (fr) 2020-03-05

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ID=67659830

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2019/071137 WO2020043444A1 (fr) 2018-08-30 2019-08-06 Dispositif d'étanchéité et pièce de machine pour un tel dispositif d'étanchéité

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Country Link
DE (1) DE102018121255A1 (fr)
WO (1) WO2020043444A1 (fr)

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2674472A (en) * 1949-02-17 1954-04-06 Leer S Curacao N V Van Joint
US2674390A (en) * 1950-03-31 1954-04-06 Leer S Curacao N V Van Joint or closure

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE899580C (de) * 1949-06-04 1953-12-14 W Wiederhold Dipl Ing Muffenrohrverbindung mit elastischer Kippdichtung
DE1232414B (de) * 1961-02-27 1967-01-12 Forsheda Gummifabrik Aktiebola Dichtring aus elastischem Material
FR1409571A (fr) * 1964-09-02 1965-08-27 Forenede Gummi Luftringe Joint d'étanchéité en matière élastique
FR1415913A (fr) * 1964-10-17 1965-10-29 Joints d'étanchéité pour canalisations
FR1423100A (fr) * 1964-11-20 1966-01-03 Procedes Fit Soc D Perfectionnements aux joints d'étanchéité annulaires
DE3414693A1 (de) * 1983-07-04 1985-01-24 Karl 6969 Hardheim Hock Steckverbindung
US5683116A (en) * 1995-10-24 1997-11-04 Ameron International Corporation O-ring push-pull pipe joint

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2674472A (en) * 1949-02-17 1954-04-06 Leer S Curacao N V Van Joint
US2674390A (en) * 1950-03-31 1954-04-06 Leer S Curacao N V Van Joint or closure

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Publication number Publication date
DE102018121255A1 (de) 2020-03-05

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