WO1985005421A1 - Soufflet pour accouplement rigide - Google Patents

Soufflet pour accouplement rigide Download PDF

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Publication number
WO1985005421A1
WO1985005421A1 PCT/EP1985/000205 EP8500205W WO8505421A1 WO 1985005421 A1 WO1985005421 A1 WO 1985005421A1 EP 8500205 W EP8500205 W EP 8500205W WO 8505421 A1 WO8505421 A1 WO 8505421A1
Authority
WO
WIPO (PCT)
Prior art keywords
fold
bellows
degrees
flank
joint
Prior art date
Application number
PCT/EP1985/000205
Other languages
German (de)
English (en)
Inventor
Siegfried Frank
Günter GLÜHMANN
Klaus Keinrad
Richard Zigelli
Original Assignee
Feldmühle Aktiengesellschaft
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 Feldmühle Aktiengesellschaft filed Critical Feldmühle Aktiengesellschaft
Priority to BR8507188A priority Critical patent/BR8507188A/pt
Publication of WO1985005421A1 publication Critical patent/WO1985005421A1/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
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D3/00—Yielding couplings, i.e. with means permitting movement between the connected parts during the drive
    • F16D3/84—Shrouds, e.g. casings, covers; Sealing means specially adapted therefor
    • F16D3/843—Shrouds, e.g. casings, covers; Sealing means specially adapted therefor enclosed covers
    • F16D3/845—Shrouds, e.g. casings, covers; Sealing means specially adapted therefor enclosed covers allowing relative movement of joint parts due to the flexing of the cover
    • 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
    • F16J3/00—Diaphragms; Bellows; Bellows pistons
    • F16J3/04—Bellows
    • F16J3/041—Non-metallic bellows

Definitions

  • the invention relates to a bellows for fixed joints with a deflection of up to 50
  • thermoplastic elastomer based on polyetherester and has at least three folds.
  • Bellows for fixed joints, in particular for homokinetic joints, have been known for a long time and are generally made from natural or synthetic rubbers and their mixtures and polyurethane.
  • the area of. Deflection was continuously increased because these bellows constructions are intended to protect cardan shafts of vehicle drives and the aim is to keep the turning circle of the vehicle as small as possible. Due to the requirement to withstand a deflection of up to 50 degrees, considerable demands are placed on the bellows, which are exacerbated by the fact that the bellows absorb grease inside and quite high speeds over a long period, in generally has to withstand a mileage of 150,000 to 200,000 km corresponding time of about 8 to 10 years.
  • this material has only a very low elasticity and therefore has completely different properties during assembly and also in use as an axle boot, so that special steps have to be taken to make a bellows out of this material to design that meets the requirements.
  • the present application is therefore based on the task of a cold-resistant material, that is, a thermoplastic Elastomers based on polyetherester to create a bellows that withstands damage of 50 degrees and has a long service life even at the lowest temperatures, such as occur in regions of the Arctic Circle.
  • a bellows for fixed joints with a deflection of up to 50 degrees which consists of a thermoplastic elastomer based on polyetherester, has at least three folds with the characteristic feature that at least the front flank of the first fold and possibly the front flank the second fold, seen from the side facing away from the joint, has a taper ratio of the flank wall thickness from the base of the fold to the pleat tip of 15: 1 to 8: 1 and all other flanks have a ratio of the flank wall thicknesses of 6: 1 to 4: 1.
  • the side of the bellows facing away from the joint is generally the side that has the small axis diameter.
  • the wrinkles in this area are also smaller.
  • the bellows is stretched on the outside of the bend and compressed on the inside of the bend.
  • Rubber materials tolerate both buckling and slipping, particularly in the case of dynamic stress, but not materials that have a much lower elongation, such as polyether ester elastomers. With these, the overturning and also the kinking will certainly lead to the cuff breaking after a short time.
  • flank wall thickness of the front flank of the first fold and possibly the second fold in the region of the flank base is between 2 and 3.5 mm.
  • the flank wall thickness of the further folds is advantageously in the foot area between 1.2 and 2.2 mm. There is therefore a considerable difference in the wall thicknesses, ie all rear flanks are made thinner and therefore easier to deform, which ensures that the sleeve is not slipped on.
  • the flank wall thickness is preferably between 0.2 and 0.4 mm, in order to ensure high elasticity while maintaining the required strength.
  • the joint-side inside diameter of the cuff was 80 mm, the small inside diameter of the cuff was 25 mm, the wall thickness of the front flank, the first fold in the area of the fold base 2.5 mm, in the area of the fold tip 0.4 mm, the front flank of the second fold showed A thickness of 2.2 in the area of the fold base and a thickness of 0.35 mm in the area of the fold tip. All further
  • Trailing edge angle 29 degrees.
  • Trailing edge angle 28 degrees.
  • Trailing edge angle ⁇ 35 degrees.
  • the width to height ratio was:
  • the length of the bellows between the bundles was 130 mm, the installation length 84 mm. The following tests were carried out on these bellows: 1. deformation behavior during the static deflection,
  • the axle boot test rig consisted of two columns that were adjustable at an angle to each other, between which a drivable, homokinetic fixed joint with a bellows was applied.
  • the length of the bellows was 84 mm.
  • "Molykote VN 2461 C” was used as fat.
  • the rotary test bench was equipped with a drive that was continuously adjustable in the speed range 0 ... 3500 min.
  • the flash frequency of a stroposcope was adjusted to the speed so that every change in shape of the cuff was visible and measurable and could be captured photographically.
  • the diameter changes of the cuff were determined at the speed levels 1600; 1800; 2000; 2200; 2400; 2600; 2800; 3000; 3200 min -1 compared to the actual dimensions before the test.
  • the table shows the dimensional deviations in the corresponding folds.
  • the bellows was brought to a temperature of 100 ° C.
  • the axle boot test bench was set to a flexion angle of 20 degrees and the homokinetic joint with a speed of 140 rpm. powered for 240 hours. Two bellows were subjected to this test. After 240 hours, no grease had escaped, and no damage to the bellows could be found.
  • FIG. 1 shows a constant velocity joint with bellows in partial section
  • FIG. 2 shows the front view of the bellows in partial section
  • the homokinetic joint 7 consists of a fixed area 9, in which the shaft 10 is pivotally mounted.
  • the shaft 10 has two annular beads 11, which serve to receive the small collar 12 of the bellows 13.
  • the collar 12 of the bellows 13 is held on the shaft 10 in the area between the annular beads 11 by a tensioning band 14.
  • the large collar 15 of the bellows 13 is attached to the
  • the front flank 3 of the first fold 1 has a wall thickness of 3.20 mm in the region of the fold base 5 and tapers towards the fold tip 6 towards 0.60 mm.
  • the front flank 3 of the second folds 2 has a wall thickness of 2.40 mm in the region of the fold base 5 and tapers to 0.40 mm.
  • the rear flank 4 of the first fold 1 and also the rear flank 4 of the further fold 2 have the same dimension in the area of the fold base 5, namely 1.50 mm and taper to 0.60 or 0.40 mm.
  • the fold base 5 at the front flank 3 of the third fold 21 is 1.80, the fourth fold 20 1.65 and the fifth fold 19 1.40 mm.
  • the corresponding rear flanks 4 have a thickness of 1, 50 or 1.35 or 1.30 mm in the fold base 5. They taper to a total of 0.40, 0.25 and 0.20 mm.
  • a circumferential relief groove 17 is arranged between the individual folds, through which the upsetting and stretching of the bellows is facilitated.
  • the angle ⁇ is 37.5 degrees, which gives the fourth touch, that is to say that the second fold 2 is now also in contact with the first fold 1.
  • 6 shows a diffraction of 40.5, in FIG. 7 that of 50 degrees. All wrinkles touch each other continuously.
  • Figures 8 and 9 show a homokinetic joint according to the prior art, i. H. a homokinetic joint 7, which according to FIG. 8 has a diffraction angle ⁇ of 42.0 and according to FIG. It is shown that at 42.0 degrees diffraction the first fold 1 has already been slipped over, and at a diffraction angle ⁇ of 50.0 degrees, the last fold 19 also slips over itself. In addition, the buckling 22 can be clearly seen in the practically stretched area.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Diaphragms And Bellows (AREA)

Abstract

Le soufflet pour accouplement à grand pivotement, qui est utilisé à des basses températures, est fabriqué en un élastomère thermoplastique à base de polyétherester. Les flancs antérieurs (3) du premier pli (1) vus du côté opposé à l'accouplement (7), diminuent plus fortement à partir du creux (5) du pli vers la crête (6) que les autres flancs.
PCT/EP1985/000205 1984-05-12 1985-05-07 Soufflet pour accouplement rigide WO1985005421A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
BR8507188A BR8507188A (pt) 1984-05-12 1985-05-07 Fole de dobras para articulacoes fixas

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DEP3417708.6 1984-05-12
DE19843417708 DE3417708A1 (de) 1984-05-12 1984-05-12 Faltenbalg fuer festgelenke

Publications (1)

Publication Number Publication Date
WO1985005421A1 true WO1985005421A1 (fr) 1985-12-05

Family

ID=6235696

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP1985/000205 WO1985005421A1 (fr) 1984-05-12 1985-05-07 Soufflet pour accouplement rigide

Country Status (6)

Country Link
EP (1) EP0211845A1 (fr)
JP (1) JPS61502139A (fr)
BR (1) BR8507188A (fr)
DE (1) DE3417708A1 (fr)
ES (1) ES8607489A1 (fr)
WO (1) WO1985005421A1 (fr)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4923432A (en) * 1989-02-10 1990-05-08 Moog Automotive, Inc. Flexible boot for driving axle joints
DE4037482A1 (de) * 1990-11-24 1992-05-27 Freudenberg Carl Fa Faltenbalg aus thermoplastischem elastomer
US5176390A (en) * 1990-06-30 1993-01-05 Draftex Industries Limited Flexible protective bellows optionally including serrated attachment groove
US5222746A (en) * 1990-03-07 1993-06-29 Brian Technics Protective bellows for universal joints allowing rapid installation
FR2711751A1 (fr) * 1993-09-30 1995-05-05 Ntn Toyo Bearing Co Ltd Soufflet en résine pour joints universels à vitesse constante.
DE102008034959A1 (de) 2008-07-25 2010-01-28 Fuchs Petrolub Ag Calcium/Lithium-Komplexfette und gekapseltes Gleichlaufgelenk enthaltend diese sowie deren Anwendung
DE102011108575A1 (de) 2011-07-27 2013-01-31 Fuchs Petrolub Ag Schmierfette enthaltend Ligninsulfonat, deren Herstellung und Verwendung, insbesondere in Gleichlaufgelenkwellen
WO2016141911A1 (fr) 2015-03-09 2016-09-15 Fuchs Petrolub Se Procédé de fabrication de graisses lubrifiantes épaissies par polyurée, à base de dérivés de lignine, graisses lubrifiantes de ce type et leur utilisation

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3639482A1 (de) * 1986-11-18 1988-05-26 Wolfram Dr Schiemann Faltenbalg fuer kraftfahrzeuge
DE4020403A1 (de) * 1990-06-27 1992-01-02 Continental Ag Faltenbalg
DE29618360U1 (de) * 1996-10-25 1997-02-27 Willer Rolf Faltenbalg zur Abdeckung von beweglichen Teilen, insbesondere im Kraftfahrzeugbau
DE102006039861A1 (de) * 2006-08-25 2008-03-13 Zf Friedrichshafen Ag Dichtungs- oder Faltenbalg

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1238365A (fr) * 1959-06-30 1960-08-12 Hispano Suiza Sa Perfectionnements apportés aux soufflets métalliques, notamment à ceux pour joints d'étanchéité, ainsi qu'aux procédés pour leur élaboration
FR2300266A1 (fr) * 1975-02-10 1976-09-03 Continental Gummi Werke Ag Manchette a plis d'etancheite
FR2414144A1 (fr) * 1978-01-04 1979-08-03 Citroen Sa Joint de transmission a protecteur a soufflet
FR2435641A1 (fr) * 1978-09-09 1980-04-04 Continental Gummi Werke Ag Soufflet en accordeon pour manchon de protection de pieces de machine
DE2845243A1 (de) * 1978-10-18 1980-04-30 Audi Nsu Auto Union Ag Faltenbalg fuer ein teleskopierbares bauteil
US4235427A (en) * 1979-05-07 1980-11-25 Walter Bialobrzeski Spring

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1238365A (fr) * 1959-06-30 1960-08-12 Hispano Suiza Sa Perfectionnements apportés aux soufflets métalliques, notamment à ceux pour joints d'étanchéité, ainsi qu'aux procédés pour leur élaboration
FR2300266A1 (fr) * 1975-02-10 1976-09-03 Continental Gummi Werke Ag Manchette a plis d'etancheite
FR2414144A1 (fr) * 1978-01-04 1979-08-03 Citroen Sa Joint de transmission a protecteur a soufflet
FR2435641A1 (fr) * 1978-09-09 1980-04-04 Continental Gummi Werke Ag Soufflet en accordeon pour manchon de protection de pieces de machine
DE2845243A1 (de) * 1978-10-18 1980-04-30 Audi Nsu Auto Union Ag Faltenbalg fuer ein teleskopierbares bauteil
US4235427A (en) * 1979-05-07 1980-11-25 Walter Bialobrzeski Spring

Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4923432A (en) * 1989-02-10 1990-05-08 Moog Automotive, Inc. Flexible boot for driving axle joints
US5222746A (en) * 1990-03-07 1993-06-29 Brian Technics Protective bellows for universal joints allowing rapid installation
US5176390A (en) * 1990-06-30 1993-01-05 Draftex Industries Limited Flexible protective bellows optionally including serrated attachment groove
DE4037482A1 (de) * 1990-11-24 1992-05-27 Freudenberg Carl Fa Faltenbalg aus thermoplastischem elastomer
FR2711751A1 (fr) * 1993-09-30 1995-05-05 Ntn Toyo Bearing Co Ltd Soufflet en résine pour joints universels à vitesse constante.
US5645286A (en) * 1993-09-30 1997-07-08 Ntn Corporation Resin boot for constant velocity universal joints
DE102008034959A1 (de) 2008-07-25 2010-01-28 Fuchs Petrolub Ag Calcium/Lithium-Komplexfette und gekapseltes Gleichlaufgelenk enthaltend diese sowie deren Anwendung
EP2154229A2 (fr) 2008-07-25 2010-02-17 Fuchs Petrolub AG Graisses complexes de calcium/lithium, joints de transmission homocinétiques encapsulés comprenant de telles graisses de lubrification, leur utilisation et leur procédé de fabrication
US8603958B2 (en) 2008-07-25 2013-12-10 Fuchs Petrolub Ag Calcium/lithium complex greases and encapsulated constant velocity joint containing the grease and method for their production
DE102011108575A1 (de) 2011-07-27 2013-01-31 Fuchs Petrolub Ag Schmierfette enthaltend Ligninsulfonat, deren Herstellung und Verwendung, insbesondere in Gleichlaufgelenkwellen
WO2016141911A1 (fr) 2015-03-09 2016-09-15 Fuchs Petrolub Se Procédé de fabrication de graisses lubrifiantes épaissies par polyurée, à base de dérivés de lignine, graisses lubrifiantes de ce type et leur utilisation
DE102015103440A1 (de) 2015-03-09 2016-09-15 Fuchs Petrolub Se Verfahren zur Herstellung von Polyharnstoff-verdickten Schmierfetten auf Basis von Lignin-Derivaten, derartige Schmierfette und deren Verwendung
US10604721B2 (en) 2015-03-09 2020-03-31 Fuchs Petrolub Se Process for the preparation of polyurea-thickened lignin derivative-based lubricating greases, such lubricant greases and use thereof

Also Published As

Publication number Publication date
BR8507188A (pt) 1987-07-14
JPS61502139A (ja) 1986-09-25
DE3417708A1 (de) 1985-11-14
ES543018A0 (es) 1986-05-16
EP0211845A1 (fr) 1987-03-04
ES8607489A1 (es) 1986-05-16

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