WO2020125866A1 - Schiebemuffe - Google Patents
Schiebemuffe Download PDFInfo
- Publication number
- WO2020125866A1 WO2020125866A1 PCT/DE2019/101100 DE2019101100W WO2020125866A1 WO 2020125866 A1 WO2020125866 A1 WO 2020125866A1 DE 2019101100 W DE2019101100 W DE 2019101100W WO 2020125866 A1 WO2020125866 A1 WO 2020125866A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- sliding sleeve
- toothing
- tooth
- sleeve according
- tooth flanks
- Prior art date
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
- F16D23/00—Details of mechanically-actuated clutches not specific for one distinct type
- F16D23/02—Arrangements for synchronisation, also for power-operated clutches
- F16D23/04—Arrangements for synchronisation, also for power-operated clutches with an additional friction clutch
- F16D23/06—Arrangements for synchronisation, also for power-operated clutches with an additional friction clutch and a blocking mechanism preventing the engagement of the main clutch prior to synchronisation
-
- 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
- F16D23/00—Details of mechanically-actuated clutches not specific for one distinct type
- F16D23/02—Arrangements for synchronisation, also for power-operated clutches
- F16D23/04—Arrangements for synchronisation, also for power-operated clutches with an additional friction clutch
- F16D23/06—Arrangements for synchronisation, also for power-operated clutches with an additional friction clutch and a blocking mechanism preventing the engagement of the main clutch prior to synchronisation
- F16D2023/0631—Sliding sleeves; Details thereof
-
- 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
- F16D23/00—Details of mechanically-actuated clutches not specific for one distinct type
- F16D23/02—Arrangements for synchronisation, also for power-operated clutches
- F16D23/04—Arrangements for synchronisation, also for power-operated clutches with an additional friction clutch
- F16D23/06—Arrangements for synchronisation, also for power-operated clutches with an additional friction clutch and a blocking mechanism preventing the engagement of the main clutch prior to synchronisation
- F16D2023/0656—Details of the tooth structure; Arrangements of teeth
-
- 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
- F16D2250/00—Manufacturing; Assembly
- F16D2250/0038—Surface treatment
- F16D2250/0046—Coating
-
- 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
- F16D2250/00—Manufacturing; Assembly
- F16D2250/0038—Surface treatment
- F16D2250/0053—Hardening
Definitions
- the invention relates to a sliding sleeve of a motor vehicle change transmission.
- Sliding sleeves are used in motor vehicle transmissions to connect idler gears to the synchronizer body arranged on the main transmission shaft in a rotationally fixed manner.
- the sliding sleeve has an internal toothing which is permanently engaged with an external toothing of the synchronizer body.
- the speeds of the gear wheel and the synchronizer body are matched to one another by means of a synchronizer ring or a plurality of synchronizer rings.
- the gear components are in frictional engagement.
- Sliding sleeves are case hardened and tempered due to the load.
- the gear can be shifted in this way.
- the sliding sleeve is axially displaced so that it meshes with additional gearwheel-fixed toothing and produces a positive connection that ensures high efficiency.
- DE 102 30 189 A1 proposes to provide the tooth profile of a sliding sleeve with a sliding layer.
- the sliding layer can be based on metal phosphates, PTFE, graphite, carbon, plastic, molybdenum sulfide, chromium, nickel or silver.
- EP 1 150 028 A1 shows that case hardening or nitriding of a sliding sleeve is to be replaced by local hardening in order to reduce component wear.
- the power density of synchronizations can be further increased by lightweight construction. However, this is accompanied by increased loads that impair the functional reliability and service life of the synchronization components. Do not play only the loads involved in coupling play a role, and loads in the switched state are also increasingly gaining influence.
- the object of the invention is to provide a synchronization that allows a low mass of the synchronization components and does not have the disadvantages mentioned above.
- the object of the invention is achieved in a sliding sleeve according to the preamble of claim 1 in that its toothing is surface-treated in such a way that it has a higher coefficient of friction with the synchronizing body provided for engagement or with the counter-toothing belonging to a gear wheel or coupling body than he would be without the surface treatment.
- the invention is based on the technical effect that increased loads, such as those that can arise from vibrations, can be eliminated by the surface treatment which is inherently not necessary.
- the sliding sleeve is subjected to a surface treatment, and the toothing partners remain untreated, which reduces the manufacturing cost of the synchronization, since the sliding sleeve toothing in the switched state is in engagement with two toothings, so that only one surface treatment is required.
- one of the teeth is shot-peened, nitrided or hardened.
- the toothing is coated.
- the toothing can alternatively or subsequently be microstructured.
- the surface coverage of the meshing components can be increased by laser-generated surface modifications.
- a friction-increasing shear can help to reduce vibrations or rotational irregularities introduced into the transmission so that the switching components are not loaded in stationary operation. This increases the service life and functional reliability.
- the power density can be increased by eliminating the vibrations in the teeth.
- the toothing of the sliding sleeve is treated differently in different areas.
- the teeth thus experience a different surface modification in comparison with the tooth tips in the area of their tooth flanks which are in engagement with the synchronizer body or the gear wheel or the clutch body. While friction reduction is sought in the area of the tooth tips, the coefficient of friction in the tooth flank area should be increased.
- aftertreatment can be carried out by laser structuring in the tooth flank area.
- the surface treatment can also, as is the sole purpose in the prior art, secondarily reduce the friction between the shift fork and the contact surfaces of the sliding sleeve. This reduces friction losses. A coating at this point can therefore be dispensed with in some cases.
- Fig. 1 shows a partial view of a first sliding sleeve with an internal toothing
- FIG. 2 is a perspective view of a further sliding sleeve.
- the schematic representation of FIG. 1 shows a partial view of a sliding sleeve 1 with a toothing 2 designed as an internal toothing.
- the toothing 2 is designed in a known manner as a straight toothing.
- the individual teeth 3, 5 of the toothing each have a flattened cross section 4 with oblique tooth flanks 10 tapering upwards.
- Some of the teeth 5 have a flattened cross-section on the end face as a bevel 6, which can serve in particular to improve pre-synchronization when axially displacing the sliding sleeve 1 in the direction of a gearwheel with external teeth (not shown).
- the ringförmi ge sliding sleeve 1 comprises, in addition to the toothing 2, a closed toothing ring 7, which carries the toothing 2, and on the outer jacket 8 of a groove-like engagement 9 for a switching element (not shown), in particular for a shift fork, is rotatably attached.
- the toothing 2 has tooth flanks 10 which are oriented in the circumferential direction. On the face side, the tooth flanks 10 merge into the roof slopes 6, which in turn open into end faces 13, 14 arranged in a V-shape. Together with the roof slopes 6 form the end faces 13, 14 roof tops.
- the entire sliding sleeve 1 of FIG. 2 is nitrided, the tooth flanks 10 being surface-treated in such a way that their friction with the counter-toothing is greater than it would be in the untreated state. Their surface structure and thus their coefficient of friction differs in the present case also from that of the tooth roofs 12, the tooth bases 11 and that of the roof slopes 6 and end faces 13, 14 by the duration and conditions of the nit process.
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Mechanical Operated Clutches (AREA)
Abstract
Description
Claims
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE112019006243.3T DE112019006243A5 (de) | 2018-12-17 | 2019-12-17 | Schiebemuffe |
JP2021534912A JP2022513295A (ja) | 2018-12-17 | 2019-12-17 | スライドスリーブ |
CN201980079153.0A CN113167340A (zh) | 2018-12-17 | 2019-12-17 | 滑动套筒 |
US17/413,975 US20220025937A1 (en) | 2018-12-17 | 2019-12-17 | Sliding sleeve |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102018132517.7A DE102018132517A1 (de) | 2018-12-17 | 2018-12-17 | Schiebemuffe |
DE102018132517.7 | 2018-12-17 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2020125866A1 true WO2020125866A1 (de) | 2020-06-25 |
Family
ID=69159501
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/DE2019/101100 WO2020125866A1 (de) | 2018-12-17 | 2019-12-17 | Schiebemuffe |
Country Status (5)
Country | Link |
---|---|
US (1) | US20220025937A1 (de) |
JP (1) | JP2022513295A (de) |
CN (1) | CN113167340A (de) |
DE (2) | DE102018132517A1 (de) |
WO (1) | WO2020125866A1 (de) |
Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1150028A1 (de) | 2000-04-28 | 2001-10-31 | Johann Hay GmbH & Co. KG, Automobiltechnik | Schiebemuffe für ein Schaltgetriebe und Verfahren zu deren Herstellung |
DE10230189A1 (de) | 2002-07-05 | 2004-01-22 | Ina-Schaeffler Kg | Schaltkupplung in einem Schaltgetriebe |
KR20070030560A (ko) * | 2005-09-13 | 2007-03-16 | 현대자동차주식회사 | 수동 변속기의 슬리브 결합구조 |
DE102008047019A1 (de) * | 2008-09-13 | 2010-03-18 | Schaeffler Kg | Schaltanordnung mit Synchronisiereinrichtung für ein Schalt-Wechselgetriebe |
FR3040200A1 (fr) * | 2015-08-21 | 2017-02-24 | Peugeot Citroen Automobiles Sa | Manchon de synchroniseur comprenant une cannelure interne en plastique et procede de fabrication du manchon |
CN107061536A (zh) * | 2017-04-24 | 2017-08-18 | 宁波上中下自动变速器有限公司 | 一种采用电控换挡的变速器总成 |
Family Cites Families (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE10006168A1 (de) * | 2000-02-11 | 2001-08-23 | Schaeffler Waelzlager Ohg | Reibpaarung für eine Synchronisiereinrichtung in Zahnräderwechselgetrieben |
DE102006053495A1 (de) * | 2006-11-14 | 2008-05-15 | Schaeffler Kg | Schiebemuffe einer Synchronisiervorrichtung |
CN102401023A (zh) * | 2011-11-15 | 2012-04-04 | 无锡贺安特动力科技有限公司 | 碳基耐磨同步齿环 |
DE102013220251A1 (de) * | 2013-10-08 | 2015-04-09 | Schaeffler Technologies Gmbh & Co. Kg | Schaltkupplung in einem Schaltgetriebe |
ES2663475T3 (es) * | 2013-12-17 | 2018-04-12 | OERLIKON FRICTION SYSTEMS (GERMANY) GmbH | Anillo de fricción, anillo de sincronización, unidad de sincronización, así como una caja de cambios de velocidades para un vehículo |
DE102015225100B4 (de) * | 2015-12-14 | 2024-06-20 | Schaeffler Technologies AG & Co. KG | Synchronisiereinrichtung |
DE102016104495A1 (de) * | 2016-03-11 | 2017-09-14 | Hoerbiger Antriebstechnik Holding Gmbh | Schiebemuffe einer Synchronisationsvorrichtung für ein Schaltgetriebe sowie Verfahren zum Herstellen einer solchen Schiebemuffe |
-
2018
- 2018-12-17 DE DE102018132517.7A patent/DE102018132517A1/de not_active Withdrawn
-
2019
- 2019-12-17 JP JP2021534912A patent/JP2022513295A/ja active Pending
- 2019-12-17 WO PCT/DE2019/101100 patent/WO2020125866A1/de active Application Filing
- 2019-12-17 CN CN201980079153.0A patent/CN113167340A/zh active Pending
- 2019-12-17 DE DE112019006243.3T patent/DE112019006243A5/de not_active Withdrawn
- 2019-12-17 US US17/413,975 patent/US20220025937A1/en not_active Abandoned
Patent Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1150028A1 (de) | 2000-04-28 | 2001-10-31 | Johann Hay GmbH & Co. KG, Automobiltechnik | Schiebemuffe für ein Schaltgetriebe und Verfahren zu deren Herstellung |
DE10230189A1 (de) | 2002-07-05 | 2004-01-22 | Ina-Schaeffler Kg | Schaltkupplung in einem Schaltgetriebe |
KR20070030560A (ko) * | 2005-09-13 | 2007-03-16 | 현대자동차주식회사 | 수동 변속기의 슬리브 결합구조 |
DE102008047019A1 (de) * | 2008-09-13 | 2010-03-18 | Schaeffler Kg | Schaltanordnung mit Synchronisiereinrichtung für ein Schalt-Wechselgetriebe |
FR3040200A1 (fr) * | 2015-08-21 | 2017-02-24 | Peugeot Citroen Automobiles Sa | Manchon de synchroniseur comprenant une cannelure interne en plastique et procede de fabrication du manchon |
CN107061536A (zh) * | 2017-04-24 | 2017-08-18 | 宁波上中下自动变速器有限公司 | 一种采用电控换挡的变速器总成 |
Also Published As
Publication number | Publication date |
---|---|
DE102018132517A1 (de) | 2020-06-18 |
JP2022513295A (ja) | 2022-02-07 |
US20220025937A1 (en) | 2022-01-27 |
CN113167340A (zh) | 2021-07-23 |
DE112019006243A5 (de) | 2021-08-26 |
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