WO2013029681A1 - Boîte de vitesses à trains épicycloïdaux et bague de glissement - Google Patents

Boîte de vitesses à trains épicycloïdaux et bague de glissement Download PDF

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Publication number
WO2013029681A1
WO2013029681A1 PCT/EP2011/065084 EP2011065084W WO2013029681A1 WO 2013029681 A1 WO2013029681 A1 WO 2013029681A1 EP 2011065084 W EP2011065084 W EP 2011065084W WO 2013029681 A1 WO2013029681 A1 WO 2013029681A1
Authority
WO
WIPO (PCT)
Prior art keywords
sliding ring
planetary gear
sliding
gear
ring
Prior art date
Application number
PCT/EP2011/065084
Other languages
German (de)
English (en)
Inventor
Harald Martini
Thorsten Biermann
Original Assignee
Schaeffler Technologies AG & Co. KG
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 Schaeffler Technologies AG & Co. KG filed Critical Schaeffler Technologies AG & Co. KG
Priority to PCT/EP2011/065084 priority Critical patent/WO2013029681A1/fr
Publication of WO2013029681A1 publication Critical patent/WO2013029681A1/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
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C33/00—Parts of bearings; Special methods for making bearings or parts thereof
    • F16C33/02—Parts of sliding-contact bearings
    • F16C33/04—Brasses; Bushes; Linings
    • F16C33/20—Sliding surface consisting mainly of plastics
    • 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
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C17/00—Sliding-contact bearings for exclusively rotary movement
    • F16C17/02—Sliding-contact bearings for exclusively rotary movement for radial load only
    • 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
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C27/00—Elastic or yielding bearings or bearing supports, for exclusively rotary movement
    • F16C27/06—Elastic or yielding bearings or bearing supports, for exclusively rotary movement by means of parts of rubber or like materials
    • F16C27/063—Sliding contact bearings
    • 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
    • F16H—GEARING
    • F16H48/00—Differential gearings
    • F16H48/06—Differential gearings with gears having orbital motion
    • F16H48/10—Differential gearings with gears having orbital motion with orbital spur gears
    • F16H48/11—Differential gearings with gears having orbital motion with orbital spur gears having intermeshing planet gears
    • 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
    • F16H—GEARING
    • F16H48/00—Differential gearings
    • F16H48/38—Constructional details
    • F16H48/40—Constructional details characterised by features of the rotating cases
    • 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
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C2361/00—Apparatus or articles in engineering in general
    • F16C2361/61—Toothed gear systems, e.g. support of pinion shafts
    • 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
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C25/00—Bearings for exclusively rotary movement adjustable for wear or play
    • F16C25/02—Sliding-contact bearings
    • F16C25/04—Sliding-contact bearings self-adjusting
    • 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
    • F16H—GEARING
    • F16H48/00—Differential gearings
    • F16H48/06—Differential gearings with gears having orbital motion
    • F16H48/10—Differential gearings with gears having orbital motion with orbital spur gears
    • F16H2048/106—Differential gearings with gears having orbital motion with orbital spur gears characterised by two sun gears
    • 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
    • F16H—GEARING
    • F16H57/00—General details of gearing
    • F16H57/08—General details of gearing of gearings with members having orbital motion
    • F16H57/082—Planet carriers

Definitions

  • the invention relates to a planetary gear with at least one sun gear and at least one coaxial and rotatable arranged to this Planet tenradong.
  • the invention further relates to a sliding ring for sliding bearing of relatively rotatable components.
  • DE 10 2009 032 286 A1 is concerned with a planetary gear.
  • This has two sun gears, each of which sun gear is engaged with a set of planetary gears, which are supported by a Planetenradtrager.
  • the sun gears are radially centered by the tooth forces acting during operation in engagement with the planetary gears.
  • a disadvantage of this embodiment is that the centering is not guaranteed in the knot-free state, so that the position of the sun gears can be very far from the radial center position Misalignment between the sun gear and the planetary gear carrier is possible, all of which leads to increased wear and increased noise, especially when large forces are transmitted between planetary gears and sun gears, especially a differential. Summary of the invention
  • the invention is therefore based on the object in a Planetenradgetrie- and in a slide bearing of the aforementioned type to simplify manufacture and assembly.
  • the object is solved by the features of claim 1 and alternatively by the features of claim 4.
  • the storage space and cost-saving designed as sliding bearing.
  • at least one sliding ring can be arranged radially between the sun gear and the planet carrier.
  • the sliding ring is arranged with slight radial prestress between the sun gear and the planet carrier. In this way, the sun gear centered exactly and the center distances between this and the planetary gears can be precisely determined.
  • a Clarradlagerung on the planet carrier can be achieved in a simple manner in that the sliding ring is disposed on a sun gear on the axially projecting portion and is radially outside with a coaxially arranged to this section on the planet in sliding contact.
  • the slide ring can be arranged, for example, as a slide bushing on an axially protruding hub portion of the sun gear and radially outward with a coaxially arranged guide collar on the planet carrier in sliding contact.
  • the sliding ring dampens the noise between the sun gear and the guide collar during operation.
  • a sliding ring for sliding bearing of relatively rotatable components which is formed on at least one integrated spring element in diameter deformable.
  • the assembly or the attachment of the sliding ring is facilitated on a component.
  • the slide ring can be pressed on a component simply elastic force and / or positive fit, for example, plugged or postponed. In this way, a particularly easy-to-assemble elastic snap connection for fixing the sliding ring on a component is made possible.
  • the sliding ring can be pulled elastically over a paragraph for mounting to allow him to fix behind the paragraph positively snap easily.
  • Such a sliding ring can be used particularly advantageously in a planetary gear for the radial mounting of the sun gear on the planet carrier.
  • the spring element has at least one resilient web formed by one or more recesses on the sliding ring.
  • the elasticity of the sliding ring is adjustable in particular by the number of integrated webs and their design, such as web width and size of the recesses.
  • the recesses promote the distribution of lubricant and flow through the sliding ring, in particular the recesses serve at standstill of the sliding ring as a lubricant reservoir in which the lubricant can collect to be redistributed during operation, in particular on the sliding surface ,
  • the web is formed by two recesses on the sliding ring and has the shape of a right-angled "Z" in the circumferential direction They each terminate a web width spaced from the edge of the ring opposite the respective starting edge
  • the sliding ring is made of plastic.
  • a plurality of resilient webs integrated in the slide ring are provided. These are preferably arranged distributed uniformly around the circumference, whereby a uniform as possible elastic training of the sliding ring and a uniform lubricant distribution is achieved on the sliding ring.
  • the webs limit a corresponding number of arc sections on the sliding ring.
  • at least one radial projection is formed on each of the radially inner or outer sides of the arc sections, which can engage in one or more complementary recesses on the outer or inner circumference of a component for fastening the sliding ring.
  • the sliding ring on a component is simply elastically alspress-, push-on or pushed until it snaps fixed in the depression / en.
  • the slip ring can be arranged so radially with mounting radially inward and sliding contact radially outside or with attachment radially outside and sliding contact radially inside.
  • a simple Einschnapfeder suspension is achieved by the sliding ring for mounting in diameter expanded elastically and reduced in the assembled state on the insert diameter or vice versa reduced elastically reduced for mounting in diameter and expanded again in the assembled state to the insert diameter.
  • three evenly distributed over the circumference arranged resilient webs are integrated in the slide ring. These limit three arc sections on the sliding ring, on each of whose radial inner sides a circumferential radial projection is formed.
  • a fixation of the sliding ring on a component can be achieved in a simple manner by the fact that on the outer circumference of the component an easily manufacturable annular groove is formed, in which engage the projections on the sliding ring.
  • a planetary gear so can be easily fixed to the radial Sonneradlagerung the sliding ring in an annular groove on the outer circumference of the projecting hub portion of the sun gear. A, in particular temperature-related, release of the sliding ring on the hub portion is reliably avoided in this way.
  • the described invention may be preferably used in vehicles, but is not limited thereto.
  • the planetary gear is designed as a spur gear differential planetary design.
  • the planet carrier two sets of planet gears, which are each in engagement with a sun gear.
  • a planetary wheel of one set meshes with a pianeta wheel of the other set.
  • a drive wheel is provided on the planet carrier, via which a power in the spur gear differential is transferable.
  • Each of the sun gears is radially mounted on the planet carrier and at the same time connected to an axle shaft, via which in each case a wheel of a vehicle can be driven.
  • the planet carrier is preferably made in lightweight construction in sheet metal and consists of two housing parts, which can alternatively be carried out in one piece nen.
  • FIG. 1 is a perspective view of a planetary gear transmission according to the invention
  • FIG. 2 shows an enlarged detail from FIG. 1,
  • FIG. 3 shows a perspective individual view of a sliding ring according to the invention.
  • the Stirnraddifferenzial has two output sun gears 1, 2, which are each rotatably connected to a hub via a spline with a stub shaft, not shown, via each of which a wheel of a vehicle is driven.
  • Each of the sun gears 1, 2 is in each case with a set planetary gears 8, 9 in engagement.
  • a planetary gear 8 of the one set meshes in each case with a planetary gear 9 of the other set.
  • the two planetary gear sets are supported by a common planet carrier 3, which at the same time forms the differential housing and radially outside receives a drive wheel 10 (FIG.
  • Sun gears 1, 2 and planet carrier 3 are rotatable relative to one another and arranged coaxially to a central axis 1 1.
  • the planet carrier 3 consists of two housing parts, which are each designed in lightweight construction as sheet metal discs.
  • the sun gears 1, 2 each have, on their sides facing away from each other, an axially projecting hub section designed as a plug neck, in each of which a plug shaft is received for transmitting torques and which at the same time serves to guide.
  • the hub portions are each coaxially enclosed by a protruding hollow cylindrical guide collar on the outer sides of the housing parts of the planet carrier 3.
  • the sun gears 1, 2 are each mounted radially on the guide collar of the planet carrier 3, and consequently on the differential housing.
  • a sliding bearing is provided radially between the hub portions of the sun gears 1, 2 and the guide collar.
  • the slide bearing each consists of a sliding ring 4, which is arranged coaxially between the hub portion and guide collar.
  • the sliding ring 4 is fixedly arranged as a plastic sliding bushing on the hub portion of the sun gear 1, 2 and is radially outward in sliding contact with the guide collar of the Planetenradvons 3. In this way, the sliding ring 4 also serves as a damping element between the sun gear 1, 2 and differential housing.
  • the sliding rings 4 each have a plurality of sections on the inner circumference slightly radially projecting projections 6 ( Figure 2).
  • the projections 6 are formed with a rectangular cross-sectional shape and each engage in a complementary radial annular groove 7 on the outer circumference of the hub portions of the sun gears 1, 2 a.
  • the slip rings 4 are arranged axially fixed on the hub portions.
  • the seal rings 4 are inserted with slight radial bias between the hub portions of the sun gears 1, 2 and the guide collars of the planet carrier 3.
  • the center distances between the Clarradachsen extending along the central axis 1 1, and the Planetenradachsen 12, 13 can be accurately determined.
  • FIG. 3 shows the sliding ring 4 in a single view.
  • three resilient webs 5 are integrated, which are distributed over the circumference uniformly distributed by 120 ° to each other.
  • the webs 5 are each by two In the circumferential direction, the recesses extend in each case from the opposite annular edges and extend offset parallel to the circumferential direction by the web width parallel to each other and are terminated by a web width spaced from the respective starting edge
  • the edges at the ends of the recesses are rounded off in each case in the circumferential direction in order to avoid voltage peaks in the force flow
  • the three webs 5 delimit three arc sections of the same arc length on the sliding ring 4 and are connected integrally at their peripheral ends with one arc section in each case Inner circumference of each arc portion extends centrally between the ring edges a radial projection 6 in the circumferential direction.Thus, three projections 6 are arranged annularly on the inner circumference of the sliding ring 4 and in each case by the three integrated in the sliding ring
  • the projections 6 each extend almost over the entire length of the respective arch portion and end about a web width before the end.
  • the webs 5 serve as a snap-spring, by which the sliding ring 4 is elastically deformable in diameter. In this way, this is the hub portion of the sun gear 1, 2 simply alspress-, push-on or pushed until the projections 6 snap into the annular groove 7 on the hub portion frictionally and positively.
  • For mounting on the hub portion of the slide ring 4 is elastically expandable to the required mounting diameter and reduced by snapping on the annular groove 7 back to the insert diameter.
  • the elasticity of the sliding ring 4 in particular by the web width and the width of the recesses in the circumferential direction, variably adjustable. LIST OF REFERENCE NUMBERS

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Retarders (AREA)

Abstract

L'invention concerne une boîte de vitesses à trains épicycloïdaux comportant au moins un pignon planétaire (1, 2) et au moins un porte-satellites (3) disposé coaxial et rotatif par rapport au pignon planétaire, un logement radial étant prévu entre le planétaire (1, 2) et le porte-satellite (3). L'invention concerne également une bague de glissement (4) pour le logement à glissement de composants rotatifs les uns par rapport aux autres, la bague de glissement (4) étant conçue de façon diamétralement déformable sur au moins un élément ressort intégré.
PCT/EP2011/065084 2011-09-01 2011-09-01 Boîte de vitesses à trains épicycloïdaux et bague de glissement WO2013029681A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PCT/EP2011/065084 WO2013029681A1 (fr) 2011-09-01 2011-09-01 Boîte de vitesses à trains épicycloïdaux et bague de glissement

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/EP2011/065084 WO2013029681A1 (fr) 2011-09-01 2011-09-01 Boîte de vitesses à trains épicycloïdaux et bague de glissement

Publications (1)

Publication Number Publication Date
WO2013029681A1 true WO2013029681A1 (fr) 2013-03-07

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PCT/EP2011/065084 WO2013029681A1 (fr) 2011-09-01 2011-09-01 Boîte de vitesses à trains épicycloïdaux et bague de glissement

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Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US827095A (en) * 1904-04-18 1906-07-31 Gray Mfg Co Differential gearing.
US2481873A (en) * 1947-10-01 1949-09-13 Dualoc Engineering Co Non-torque-equalizing differential transmission
US2972265A (en) * 1958-04-23 1961-02-21 Walter Maurice Differential mechanism for motor vehicles
WO1993011374A1 (fr) * 1991-11-27 1993-06-10 Ivg Australia Pty. Ltd. Ensemble d'engrenage differentiel
DE102009032286A1 (de) 2008-12-18 2010-06-24 Schaeffler Kg Stirnraddifferenzial

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US827095A (en) * 1904-04-18 1906-07-31 Gray Mfg Co Differential gearing.
US2481873A (en) * 1947-10-01 1949-09-13 Dualoc Engineering Co Non-torque-equalizing differential transmission
US2972265A (en) * 1958-04-23 1961-02-21 Walter Maurice Differential mechanism for motor vehicles
WO1993011374A1 (fr) * 1991-11-27 1993-06-10 Ivg Australia Pty. Ltd. Ensemble d'engrenage differentiel
DE102009032286A1 (de) 2008-12-18 2010-06-24 Schaeffler Kg Stirnraddifferenzial

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