EP2069110A1 - Zahnrad mit dämpfungselement - Google Patents
Zahnrad mit dämpfungselementInfo
- Publication number
- EP2069110A1 EP2069110A1 EP07788119A EP07788119A EP2069110A1 EP 2069110 A1 EP2069110 A1 EP 2069110A1 EP 07788119 A EP07788119 A EP 07788119A EP 07788119 A EP07788119 A EP 07788119A EP 2069110 A1 EP2069110 A1 EP 2069110A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- gear
- damping element
- tooth
- toothing
- contour
- 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- Withdrawn
Links
- 238000013016 damping Methods 0.000 title claims abstract description 77
- 239000013013 elastic material Substances 0.000 claims abstract description 5
- 230000000149 penetrating effect Effects 0.000 claims abstract description 5
- 230000005540 biological transmission Effects 0.000 claims description 13
- 210000000332 tooth crown Anatomy 0.000 claims description 9
- 230000003252 repetitive effect Effects 0.000 claims description 5
- 239000000463 material Substances 0.000 description 5
- 238000004519 manufacturing process Methods 0.000 description 3
- 230000003313 weakening effect Effects 0.000 description 3
- 238000004026 adhesive bonding Methods 0.000 description 2
- 238000003754 machining Methods 0.000 description 2
- 230000002028 premature Effects 0.000 description 2
- 238000005096 rolling process Methods 0.000 description 2
- 238000000926 separation method Methods 0.000 description 2
- 239000006228 supernatant Substances 0.000 description 2
- 229920001875 Ebonite Polymers 0.000 description 1
- 238000005299 abrasion Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000000295 complement effect Effects 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 230000002045 lasting effect Effects 0.000 description 1
- 230000001404 mediated effect Effects 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 238000010008 shearing Methods 0.000 description 1
- 238000005245 sintering Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25F—COMBINATION OR MULTI-PURPOSE TOOLS NOT OTHERWISE PROVIDED FOR; DETAILS OR COMPONENTS OF PORTABLE POWER-DRIVEN TOOLS NOT PARTICULARLY RELATED TO THE OPERATIONS PERFORMED AND NOT OTHERWISE PROVIDED FOR
- B25F5/00—Details or components of portable power-driven tools not particularly related to the operations performed and not otherwise provided for
- B25F5/001—Gearings, speed selectors, clutches or the like specially adapted for rotary tools
-
- 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
- F16H55/00—Elements with teeth or friction surfaces for conveying motion; Worms, pulleys or sheaves for gearing mechanisms
- F16H55/02—Toothed members; Worms
- F16H55/14—Construction providing resilience or vibration-damping
-
- 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
- F16H55/00—Elements with teeth or friction surfaces for conveying motion; Worms, pulleys or sheaves for gearing mechanisms
- F16H55/02—Toothed members; Worms
- F16H55/14—Construction providing resilience or vibration-damping
- F16H55/16—Construction providing resilience or vibration-damping relating to teeth only
-
- 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
- Y10T74/00—Machine element or mechanism
- Y10T74/19—Gearing
- Y10T74/19949—Teeth
- Y10T74/19958—Bevel
Definitions
- the invention relates to a gear of a gear transmission, in particular for electric hand tool machines, with a toothing and with an existing of an elastic material damping element which is arranged in a recess of the gear.
- GB 2 224 805 A proposes a toothed disk with an elastic insert which is fitted in an edge recess of the spur gear.
- the circumferential profile of the toothed disc corresponds to the profile of the gear, wherein the toothed disc, however, projects beyond the outer contour of the toothing of the spur gear.
- the force acting on the gear during operation of the gear transmission force components can generate mechanical stresses in the toothed disc, which can result in a detachment of the toothed disc from the gear.
- the object of the invention is to improve the effectiveness and reliability of the damping element on a gear with little effort to increase the life of the gear train. Disclosure of the invention
- the object is achieved in that the gear has a toothing penetrating recess.
- the damping element While in recesses according to the prior art, the damping element rests only on the toothing, in a toothing penetrating recess according to the invention, the damping element is at least partially bordered by the toothing.
- the damping element placed in the recess receives lateral support transverse to the direction of the compressive force exerted by the counter gear on the gear and respectively on the damping element solely by the at least partial enclosure of the toothing, which is formed of hard material.
- the risk of lateral detachment of the damping element is thereby substantially reduced, so that the damping element longer lasting and more effective can fulfill its beneficial damping functions on the gear.
- toothing has a contour
- the recess penetrates this contour in such a way that an opening enclosed by the contour is formed.
- This results surrounded on all sides by the unyielding edges of the opening, which are formed by contour of the toothing of hard material, a particularly secure hold for the damping element, while the teeth of the counter gear roll on the contour of the toothing.
- a lateral risk of separation of the damping element from the gear transversely to the direction of the compressive force of the counter gear is in principle not to get.
- the damping element is integrated into the toothing of the gear, whereby uneven loading of the gear transmission can be avoided by the projection of the damping element in the peripheral position of the gear, which further improves the life of the gear transmission.
- the recess is covered by the tooth crown.
- the recess penetrates the toothing so that a weakening of the gear in the teeth, in particular the tooth head is avoided, which prevents premature tooth breakage.
- the stability of the embedded in the recess damping element is increased.
- the damping element has a profile which is flush with the contour of the toothing.
- the damping element unfolded by the embedding in the toothing without supernatant of the damping element on the tooth profile, already damping properties, since hereby the toothing an elasticity is mediated in itself
- the damping elements which have a profile over the contour of the toothing projecting profile, an effective damping of the gear transmission, because even the protruding profile of the present invention enclosed damping element receives a support.
- Good damping is achieved in particular if the profile of the damping element terminates above a toothing base.
- the Vernierungsground which corresponds to the base circle diameter, for example, the spur gear is the height level of the toothing, up to the combing of the gear pair, the
- the recess is an annular groove with repetitive openings in the contour of
- the formation of this annular groove with the associated annular damping element is easy to manufacture and achieves a stable, detachment-safe positioning of the damping element with effective damping properties.
- the recess is formed as a bore with an opening in the contour of the tooth gap and / or the tooth flank, wherein in the recess, a pin-shaped damping element is arranged.
- the recess does not penetrate the toothing as a continuous groove, but only partially, so that a weakening of the gear is avoided, especially for small gears.
- FIG. 1 is a plan view of a crown gear of a bevel gear with an annular groove and an annular damping element
- Fig. 2 is a sectional view of the ring gear along the
- Fig. 3 is an enlarged perspective view of
- FIG. 4 shows a further sectional view of the ring gear along the section line A-A from FIG. 1 with a positional variant of the annular groove and of the annular damping element, FIG.
- Fig. 5 is an enlarged, perspective detail view of the toothing with tooth grooves and tooth-shaped
- Fig. 6 is an enlarged cross-section of the toothing in detail with holes and pin-shaped damping elements.
- Fig. 1 shows the ring gear 1 of the bevel gear in a plan view.
- the gear pair of the bevel gear associated bevel gear, as a drive pinion for the ring gear 1, and the associated gear shafts are not shown for simplicity.
- the ring gear 1 of, for example, sintered material has at its edge over a toothing 2 of an alternating juxtaposition of teeth 3 and tooth spaces 4, which are uniformly spaced apart.
- the toothing 2 is penetrated by a recess 5 in the form of an integrated annular groove 5.1.
- the annular groove 5.1 can be incorporated into the ring gear 1 with a single machining operation.
- this annular groove 5.1 is formed as a damping ring 6.1 elastic damping element 6, for example, hard rubber, embedded, inter alia, by gluing in the annular groove 5.1 is fixed.
- the position of the annular groove 5.1 and the damping ring 6.1 in the toothing 2 is well visible in Fig. 2.
- the annular groove 5.1 generates in the contour 8 of the toothing 2 repetitive openings 9, from which the profile 10 of the damping ring 6.1, protrudes, as well shown in Fig. 3.
- the openings 9 are each surrounded by the contour 8 of a tooth gap 4 and the contours 8 of the tooth gap 4 adjacent tooth flanks 11, wherein the profile 10 of the damping ring 6.1, the contour 8 of the tooth gap 4 and the tooth flanks 11 surmounted.
- the profile 10 of the protruding damping ring 6.1 closes above the Veriereungsgroundes 12 (shown as a dashed line in Fig. 2) of the ring gear 1, so that when combing the bevel gear, not shown with the ring gear 1, a touch of the damping ring 6.1 with the crowns of this bevel gear and thus a damping of the bevel gear.
- the annular groove 5.1 is incorporated only so deeply into the toothing 2 that a sufficient for the stability of the gear 1 overlap of the annular groove 5.1 is given by the tooth crowns 13 of the ring gear 1.
- the damping ring 6.1 is secured as a result of its enclosure in the opening 9 of the toothing 2 from a radial displacement or detachment from the ring gear 1.
- Fig. 2 further shows at the bottom of the ring gear 1, a retaining ring 14 which additionally fixes the damping ring 6.1 in operation of the bevel gear axially to the ring gear 1 in the annular groove 5.1, and thus the stability of the damping ring 6.1 in the ring gear 1 against the applied pressure force of Bevel gear increased.
- the retaining ring 14 may be connected, for example, by means of screwing, caulking, gluing with the ring gear 1.
- the width and height and the diameter of the annular groove 5.1 can be chosen arbitrarily in accordance with adapted dimensions of the damping ring 6.1 in width, height and diameter.
- Fig. 4 shows an example of a arranged on the outer diameter of the ring gear 1 annular groove 5.2 with a damping ring 6.2 of correspondingly larger diameter.
- this mainly for supporting the damping ring 6.2 in the annular groove 5.2, this incorporated only so deep in the toothing 2, that an overlap of the annular groove 5.2 and the damping ring 6.2 takes place through the tooth crowns 13 of the ring gear 1.
- Fig. 5 are repetitive recesses 5 in the form of tooth grooves 5.3 in the teeth 3 of the teeth 2 can be seen.
- the tooth grooves 5.3 can be produced individually as well as uniformly in one machining operation.
- various tooth-shaped damping elements 6.3, 6.4, 6.5 are arranged by way of example.
- the damping element 6.3 has a knob-shaped profile 10, which projects beyond the contour 8 of the tooth flank 11.
- the damping element 6.4 has a profile 10 which is completely flush with the contour 8 of the tooth flank 11 and the tooth crown 13.
- the profile 10 of the damping element 6.5 is fully over the contour 8 of the two-sided tooth flanks 11 of the tooth 3 over.
- Fig. 6 shows in an excerpted cross-section of the toothing 2 repetitive recesses 5 as holes 5.4 each having an opening 9 in the contour 8 of a tooth gap 4 and a Tooth flank 11.
- a pin-shaped damping element 6.6 is arranged in each case, which projects with its profile 10 over the contour 8 of the tooth gap 4 and the tooth flank 11.
- This embodiment of the recesses 5 also reduces good attenuation successes, the cross-sectional weakening of the ring gear 1 to a minimum, and is therefore particularly well for small ring gears 1 with low material concentration.
- the recesses 5 in the toothing 2 can be provided in various numbers and combinations according to the specific application and the damping requirements.
- the degree of hardness of the elastic material of the damping element 6 can be varied to adapt to the respective damping requirements.
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Gears, Cams (AREA)
- Gear Transmission (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102006044446A DE102006044446A1 (de) | 2006-09-21 | 2006-09-21 | Zahnrad mit Dämpfungselement |
| PCT/EP2007/057949 WO2008034669A1 (de) | 2006-09-21 | 2007-08-01 | Zahnrad mit dämpfungselement |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| EP2069110A1 true EP2069110A1 (de) | 2009-06-17 |
Family
ID=38657721
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP07788119A Withdrawn EP2069110A1 (de) | 2006-09-21 | 2007-08-01 | Zahnrad mit dämpfungselement |
Country Status (6)
| Country | Link |
|---|---|
| US (1) | US20080289441A1 (de) |
| EP (1) | EP2069110A1 (de) |
| CN (1) | CN101516579B (de) |
| DE (1) | DE102006044446A1 (de) |
| RU (1) | RU2448293C2 (de) |
| WO (1) | WO2008034669A1 (de) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| AT510575B1 (de) * | 2010-09-24 | 2012-05-15 | Miba Sinter Austria Gmbh | Zahnrad |
| GB201611572D0 (en) * | 2016-07-01 | 2016-08-17 | Victrex Mfg Ltd | Polymeric materials |
| DE102017222346B3 (de) * | 2017-12-11 | 2018-10-18 | Audi Ag | Gangschaltkupplung für ein Fahrzeuggetriebe |
Family Cites Families (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US1015870A (en) * | 1911-08-10 | 1912-01-30 | Warner Instr Company | Gear. |
| US1295231A (en) * | 1917-06-28 | 1919-02-25 | Gleason Works | Gearing. |
| SU42767A1 (ru) * | 1934-03-25 | 1935-04-30 | Э.Г. Билефельд | Эластичные зубь сцеплени |
| DE834799C (de) * | 1950-05-13 | 1952-03-24 | Daimler Benz Ag | Geraeuschlos laufende Zahnraeder, insbesondere zum UEbertragen ungleichfoermiger Drehmomente |
| DE3934377A1 (de) * | 1988-11-09 | 1990-05-10 | Borg Warner Automotive | Anti-klappervorrichtung fuer ein getriebe |
| RU2010145C1 (ru) * | 1991-01-22 | 1994-03-30 | Беспалов Валерий Валентинович | Зубчатое колесо |
| US5400672A (en) * | 1993-07-09 | 1995-03-28 | Bunch, Jr.; Earnest B. | Gear with inset O-ring for setting backlash |
| DE9313547U1 (de) * | 1993-09-08 | 1995-01-12 | Robert Bosch Gmbh, 70469 Stuttgart | Stirnradgetriebe, insbesondere für Stellantriebe von Sitzen in Kraftfahrzeugen |
| JP2001221322A (ja) * | 2000-02-08 | 2001-08-17 | Nok Corp | 歯車装置 |
| JP2002021978A (ja) * | 2000-07-06 | 2002-01-23 | Enplas Corp | 樹脂製ギヤ及び金型構造 |
| EP1180617A1 (de) * | 2000-08-17 | 2002-02-20 | Ford Global Technologies, Inc. | Zahnradgetriebe mit einem Dämpfungselement |
-
2006
- 2006-09-21 DE DE102006044446A patent/DE102006044446A1/de not_active Withdrawn
-
2007
- 2007-08-01 WO PCT/EP2007/057949 patent/WO2008034669A1/de not_active Ceased
- 2007-08-01 CN CN2007800350925A patent/CN101516579B/zh not_active Expired - Fee Related
- 2007-08-01 RU RU2009114756/02A patent/RU2448293C2/ru not_active IP Right Cessation
- 2007-08-01 EP EP07788119A patent/EP2069110A1/de not_active Withdrawn
- 2007-08-01 US US12/094,657 patent/US20080289441A1/en not_active Abandoned
Non-Patent Citations (1)
| Title |
|---|
| See references of WO2008034669A1 * |
Also Published As
| Publication number | Publication date |
|---|---|
| US20080289441A1 (en) | 2008-11-27 |
| WO2008034669A1 (de) | 2008-03-27 |
| DE102006044446A1 (de) | 2008-04-03 |
| CN101516579B (zh) | 2012-08-01 |
| CN101516579A (zh) | 2009-08-26 |
| RU2448293C2 (ru) | 2012-04-20 |
| RU2009114756A (ru) | 2010-10-27 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
Free format text: ORIGINAL CODE: 0009012 |
|
| 17P | Request for examination filed |
Effective date: 20090421 |
|
| AK | Designated contracting states |
Kind code of ref document: A1 Designated state(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU LV MC MT NL PL PT RO SE SI SK TR |
|
| AX | Request for extension of the european patent |
Extension state: AL BA HR MK RS |
|
| DAX | Request for extension of the european patent (deleted) | ||
| 17Q | First examination report despatched |
Effective date: 20150105 |
|
| GRAP | Despatch of communication of intention to grant a patent |
Free format text: ORIGINAL CODE: EPIDOSNIGR1 |
|
| INTG | Intention to grant announced |
Effective date: 20160824 |
|
| STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN |
|
| 18D | Application deemed to be withdrawn |
Effective date: 20170104 |