WO2016035385A1 - 無段変速機 - Google Patents
無段変速機 Download PDFInfo
- Publication number
- WO2016035385A1 WO2016035385A1 PCT/JP2015/063744 JP2015063744W WO2016035385A1 WO 2016035385 A1 WO2016035385 A1 WO 2016035385A1 JP 2015063744 W JP2015063744 W JP 2015063744W WO 2016035385 A1 WO2016035385 A1 WO 2016035385A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- pulley
- continuously variable
- variable transmission
- half element
- input
- Prior art date
Links
Images
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
- F16H—GEARING
- F16H9/00—Gearings for conveying rotary motion with variable gear ratio, or for reversing rotary motion, by endless flexible members
- F16H9/02—Gearings for conveying rotary motion with variable gear ratio, or for reversing rotary motion, by endless flexible members without members having orbital motion
- F16H9/04—Gearings for conveying rotary motion with variable gear ratio, or for reversing rotary motion, by endless flexible members without members having orbital motion using belts, V-belts, or ropes
- F16H9/12—Gearings for conveying rotary motion with variable gear ratio, or for reversing rotary motion, by endless flexible members without members having orbital motion using belts, V-belts, or ropes engaging a pulley built-up out of relatively axially-adjustable parts in which the belt engages the opposite flanges of the pulley directly without interposed belt-supporting members
- F16H9/16—Gearings for conveying rotary motion with variable gear ratio, or for reversing rotary motion, by endless flexible members without members having orbital motion using belts, V-belts, or ropes engaging a pulley built-up out of relatively axially-adjustable parts in which the belt engages the opposite flanges of the pulley directly without interposed belt-supporting members using two pulleys, both built-up out of adjustable conical parts
- F16H9/18—Gearings for conveying rotary motion with variable gear ratio, or for reversing rotary motion, by endless flexible members without members having orbital motion using belts, V-belts, or ropes engaging a pulley built-up out of relatively axially-adjustable parts in which the belt engages the opposite flanges of the pulley directly without interposed belt-supporting members using two pulleys, both built-up out of adjustable conical parts only one flange of each pulley being adjustable
-
- 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
- F16H55/32—Friction members
- F16H55/52—Pulleys or friction discs of adjustable construction
- F16H55/56—Pulleys or friction discs of adjustable construction of which the bearing parts are relatively axially adjustable
-
- 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
- F16H9/00—Gearings for conveying rotary motion with variable gear ratio, or for reversing rotary motion, by endless flexible members
- F16H9/02—Gearings for conveying rotary motion with variable gear ratio, or for reversing rotary motion, by endless flexible members without members having orbital motion
- F16H9/04—Gearings for conveying rotary motion with variable gear ratio, or for reversing rotary motion, by endless flexible members without members having orbital motion using belts, V-belts, or ropes
- F16H9/12—Gearings for conveying rotary motion with variable gear ratio, or for reversing rotary motion, by endless flexible members without members having orbital motion using belts, V-belts, or ropes engaging a pulley built-up out of relatively axially-adjustable parts in which the belt engages the opposite flanges of the pulley directly without interposed belt-supporting members
Definitions
- the present invention relates to a continuously variable transmission provided with a pulley.
- a continuously variable transmission has been known in which an endless transmission member consisting of a belt-like belt is wound around an input pulley and an output pulley, and the gear ratio is changed by changing the width of V grooves of the input and output pulleys. (See, for example, Japanese Utility Model Application Publication No. 63-89458).
- a conical disk is disposed to prevent collision noise between the endless transmission member and the pulley.
- An object of the present invention is to provide a continuously variable transmission which can reduce power loss more than before.
- the present invention is An input pulley and an output pulley that form a V-groove with a pair of pulley halves having pulley surfaces;
- a rotary shaft that pivotally supports the input pulley or the output pulley;
- An endless transmission member which is wound around the input pulley and the output pulley;
- a continuously variable transmission that changes the transmission gear ratio by changing the V-groove width of the input pulley or the output pulley, and transmits the driving force transmitted to the input pulley to the output pulley via the endless transmission member
- the at least one pulley half of the input pulley or the output pulley has a first half element rotatable relative to the rotation axis, the first half element, and the endless transmission member.
- a second half element slidable on the surface of the one half element;
- the second half element is characterized in that it is configured to integrally rotate with the rotation axis as a rotation center.
- the second half element rotates, and the first half element does not rotate integrally with the rotating shaft, so that there are few rotating parts rotating integrally with the rotating shaft and the pulley is substantially rotated. Mass can be reduced, and power loss can be suppressed.
- the pulley half of the input pulley and the pulley half of the output pulley are at least axially movable movable halves, and the movable halves are axially movable relative to the rotation axis.
- the movable halves are axially movable relative to the rotation axis.
- the first half element is not influenced by the rotation (centrifugal force) of the rotating shaft and the pulley half by the above-mentioned configuration. For this reason, according to the present invention, when adjusting the V-groove width to change the gear ratio by oil pressure, the centrifugal oil pressure is not generated as in the conventional case, so the first half element is pivoted with less power (hydraulic pressure). It is possible to move in the direction, and it is possible to achieve further suppression of power loss.
- a friction reducing portion having a plurality of rolling elements arranged at intervals in the circumferential direction is provided between the first half element and the second half element. It can. According to this configuration, the friction reducing portion reduces the friction between the first half element and the second half element to make it easy to rotate the second half element, thereby further reducing the power loss. Can be Further, since the plurality of rolling elements are arranged at intervals in the circumferential direction in the friction reducing portion, the second half element can stably rotate.
- Sectional drawing which shows embodiment of the continuously variable transmission of this invention.
- the perspective view which shows the friction reduction part of the continuously variable transmission of this embodiment.
- the perspective view which shows the 2nd pulley of the continuously variable transmission of this embodiment.
- Sectional drawing which shows the state which the V groove width of the continuously variable transmission of this embodiment became narrow, and the winding diameter of the endless transmission member became large.
- the continuously variable transmission according to this embodiment includes an input pulley, an output pulley, and a belt-like endless transmission member made of a belt (may be a chain) wound around the two pulleys.
- a belt-like endless transmission member made of a belt (may be a chain) wound around the two pulleys.
- the input pulley and the output pulley are configured in the same manner, the input pulley will be described in detail, and the detailed description of the output pulley will be omitted.
- the input pulley 1 is provided on an input shaft 2 as a rotating shaft to which a driving force from an internal combustion engine or a motor is transmitted.
- the input shaft 2 is rotatably supported by a transmission case 3 accommodating the input pulley 1.
- the input pulley 1 is composed of a pair of pulley halves 4.
- the pulley half 4 is provided with pulley surfaces 4 a each forming a V-groove 6 in which the endless transmission member 5 is bridged.
- the pulley half 4 on one side is a stationary half 7 fixed immovably in the axial direction.
- the other (right side in FIG. 1) pulley half 4 is a moving half 8 which is axially movable.
- the fixed half 7 includes a fixed portion 10 fixed to the transmission case 3 with a bolt 9.
- the fixing portion 10 corresponds to a first half element of the present invention.
- the fixing portion 10 is formed with a conical tapered surface 10 a having the same shape as the pulley surface 4 a forming the V-groove 6.
- a conical plate-like friction reducing portion 11 having the same shape as the tapered surface 10 a is disposed. As shown in FIG. 2, in the friction reducing portion 11, rectangular through holes 11a extending in the radial direction are provided at a plurality of places. A cylindrical roller 12 is accommodated in each through hole 11a.
- a conical disc-like pulley half disk 13 having the same shape as the friction reducing portion 11 is disposed on the surface of the friction reducing portion 11 opposite to the fixing portion 10.
- the pulley half disc 13 slides on the tapered surface 10 a (surface) of the fixed portion 10 via the friction reducing portion 11.
- This pulley half disc 13 corresponds to the second half element of the present invention.
- the pulley half disc 13 is provided with a pulley surface 4 a which is in contact with the endless transmission member 5 to form the V groove 6.
- a cylindrical portion 13 a spline-connected to the input shaft 2 is provided at the radially inner end of the pulley half disc 13.
- the pulley half disc 13 rotates integrally with the input shaft 2 with the input shaft 2 as a rotation center.
- the moving half 8 is provided with a fixing portion 15 fixed to the transmission case 3 by a bolt 14.
- a piston portion 16 movable in the axial direction is disposed.
- the piston portion 16 is non-rotatably attached to the fixed portion 15 around the input shaft 2.
- the piston portion 16 also corresponds to the first half element of the present invention.
- a hydraulic chamber 17 is defined between the fixed portion 15 and the piston portion 16.
- the piston portion 16 is formed with a tapered surface 16 a facing the tapered surface 10 a of the fixed half 7.
- a friction reducing portion 11 having the same shape as the conical plate friction reducing portion 11 disposed on the tapered surface 10 a of the fixed portion 10 is disposed on the tapered surface 16 a of the piston portion 16.
- the same pulley half disc 13 as the pulley half disc 13 of the stationary half 7 is disposed on the surface of the friction reducing portion 11 disposed on the piston portion 16 opposite to the piston portion 16.
- the pulley half disk 13 slides on the tapered surface 16 a (surface) of the piston portion 16 via the friction reducing portion 11.
- the pulley half disc 13 also corresponds to the second half element of the present invention.
- the pulley half disk 13 is also provided with a cylindrical portion 13a spline-connected to the input shaft 2 at the radially inner end.
- the continuously variable transmission of this embodiment changes the transmission gear ratio by adjusting the winding radius of the endless transmission member 5 in this manner.
- the fixed portion 10 as the first half element is fixed to the transmission case 3 and the piston portion 16 similarly as the first half element is the transmission case via the fixed portion 15 It is provided non-rotatably at 3.
- the continuously variable transmission of the present embodiment only the pulley half disc 13 as the second half element rotates, and the fixed portion 10 and the piston portion 16 as the first half element do not rotate. Therefore, there are few rotating parts which rotate integrally with the input shaft 2 as a rotating shaft, and according to the continuously variable transmission of this embodiment, the mass of a pulley can be reduced and power loss can be suppressed.
- the moving half 8 of the input pulley 1 is provided to the transmission case 3 so as to be prevented from rotating via the fixed portion 15.
- a piston portion 16 as an element, and a pulley half disc 13 as a second half element which is movable in the axial direction with respect to the input shaft 2 as a rotation shaft and which rotates integrally with the input shaft 2 ing.
- the piston portion 16 as a first half element for changing the width of the V groove 6 is not affected by the rotation (centrifugal force) of the input shaft 2 and the pulley half disc 13. For this reason, when adjusting the width of the V groove 6 to change the transmission ratio of the continuously variable transmission, it is desirable to generate centrifugal hydraulic pressure as in the prior art, the piston portion 16 is moved in the axial direction with less power (hydraulic pressure) The power loss can be further suppressed.
- a piston portion as the first half element and between the fixed portion 10 as the first half element and the pulley half disc 13 as the second half element
- the friction reducing portion 11 having the plurality of rollers 12 as rolling elements arranged at intervals in the circumferential direction.
- the friction reducing portion 11 reduces the friction between the fixed portion 10 or the piston portion 16 as the first half element and the pulley half disc 13 as the second half element, and the pulley half disc By making it easy to rotate 13, it is possible to achieve further reduction of power loss. Further, since the plurality of rollers 12 as rolling elements are arranged at intervals in the circumferential direction in the friction reducing portion 11, the pulley half disk 13 can be stably rotated.
- the moving half of the output pulley of the present invention is not limited to this, and the width of the V groove 6 of the input pulley 1
- the width of the V groove decreases with the increase of V, and the width of the V groove increases with the decrease of the width of the V groove 6 of the input pulley 1.
- the moving half of the output pulley may be spring biased towards one.
- the first half element is fixed to the transmission case 3 in a non-rotatable manner, but the first half element of the present invention is not limited to this, and the effect of suppressing power loss is Although it reduces, it should be able to rotate relative to the rotation axis. Also by this, it is not necessary to rotate the first half element about the rotation axis such as the input shaft or the output shaft, and it is possible to achieve the operation and effect that power loss can be suppressed more than in the past.
- the power source of the moving half of this invention is not restricted to this.
- the moving half may be moved by an electric actuator to change / adjust the width of the V-groove.
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Transmissions By Endless Flexible Members (AREA)
- Pulleys (AREA)
Abstract
Description
プーリ面を有する一対のプーリ半体でV溝を形成する入力プーリ及び出力プーリと、
前記入力プーリ又は前記出力プーリを軸支する回転軸と、
前記入力プーリと前記出力プーリとに掛け渡される無端伝達部材とを備え、
前記入力プーリ又は前記出力プーリのV溝幅を変更することにより変速比を変更して、前記無端伝達部材を介して前記入力プーリに伝達された駆動力を前記出力プーリに伝達する無段変速機であって、
前記入力プーリ又は前記出力プーリの少なくとも一方のプーリ半体は、前記回転軸に対して相対回転可能な第1半体要素と、前記第1半体要素と前記無端伝達部材との間で前記第1半体要素の表面を摺動可能な第2半体要素とを有し、
前記第2半体要素は、回転中心としての前記回転軸と一体回転するように構成されることを特徴とする。
2 入力軸(回転軸)
3 変速機ケース
4 プーリ半体
4a プーリ面
5 無端伝達部材
6 V溝
7 固定半体
8 移動半体
9 ボルト
10 固定部(第1半体要素)
10a テーパー面
11 摩擦低減部
11a 貫通孔
12 ころ
13 プーリ半体ディスク(第2半体要素)
13a 筒状部
14 ボルト
15 固定部
16 ピストン部(第1半体要素)
16a テーパー面
17 油圧室
Claims (4)
- プーリ面を有する一対のプーリ半体でV溝を形成する入力プーリ及び出力プーリと、
前記入力プーリ又は前記出力プーリを軸支する回転軸と、
前記入力プーリと前記出力プーリとに掛け渡される無端伝達部材とを備え、
前記入力プーリ又は前記出力プーリのV溝幅を変更することにより変速比を変更して、前記無端伝達部材を介して前記入力プーリに伝達された駆動力を前記出力プーリに伝達する無段変速機であって、
前記入力プーリ及び前記出力プーリは一対のプーリ半体で夫々構成され、
前記入力プーリ又は前記出力プーリの少なくとも一方のプーリ半体は、前記回転軸に対して相対回転可能な第1半体要素と、前記第1半体要素と前記無端伝達部材との間で前記第1半体要素の表面を摺動可能な第2半体要素とを有し、
前記第2半体要素は、回転中心としての前記回転軸と一体回転するように構成されることを特徴とする無段変速機。 - 請求項1記載の無段変速機であって、
前記入力プーリのプーリ半体及び前記出力プーリのプーリ半体は、少なくとも軸方向に移動可能な移動半体であり、
該移動半体が、
前記回転軸に対して軸方向に移動可能であり且つ回転が阻止される前記第1半体要素と、
前記回転軸に対して軸方向に移動可能であると共に、前記回転軸と一体回転する前記第2半体要素とで構成されることを特徴とする無段変速機。 - 請求項2に記載の無段変速機であって、
前記第1半体要素と前記第2半体要素との間には、
周方向に間隔を存して配置される複数の転動体を有する摩擦低減部が設けられることを特徴とする無段変速機。 - 請求項1に記載の無段変速機であって、
前記第1半体要素と前記第2半体要素との間には、
周方向に間隔を存して配置される複数の転動体を有する摩擦低減部が設けられることを特徴とする無段変速機。
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201580042020.8A CN106574697B (zh) | 2014-09-05 | 2015-05-13 | 无级变速器 |
JP2016546341A JP6311027B2 (ja) | 2014-09-05 | 2015-05-13 | 無段変速機 |
US15/506,076 US10436293B2 (en) | 2014-09-05 | 2015-05-13 | Continuously variable transmission |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2014181402 | 2014-09-05 | ||
JP2014-181402 | 2014-09-05 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2016035385A1 true WO2016035385A1 (ja) | 2016-03-10 |
Family
ID=55439459
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2015/063744 WO2016035385A1 (ja) | 2014-09-05 | 2015-05-13 | 無段変速機 |
Country Status (4)
Country | Link |
---|---|
US (1) | US10436293B2 (ja) |
JP (1) | JP6311027B2 (ja) |
CN (1) | CN106574697B (ja) |
WO (1) | WO2016035385A1 (ja) |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS582448U (ja) * | 1981-06-30 | 1983-01-08 | 三菱農機株式会社 | 変速プ−リ |
JPH1113846A (ja) * | 1997-06-27 | 1999-01-22 | Koyo Seiko Co Ltd | 可変径プーリ |
JP2004156686A (ja) * | 2002-11-06 | 2004-06-03 | Toyota Motor Corp | ベルト挟み径/挟み圧直列制御型無段変速装置 |
JP2005053344A (ja) * | 2003-08-05 | 2005-03-03 | Hino Motors Ltd | 動力伝達構造 |
Family Cites Families (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5697282U (ja) * | 1979-12-26 | 1981-08-01 | ||
US4634405A (en) * | 1982-12-13 | 1987-01-06 | Dayco Corporation | Pulley construction and method of making the same |
JPS6389458U (ja) | 1986-12-02 | 1988-06-10 | ||
JPH052448A (ja) | 1991-06-26 | 1993-01-08 | Hitachi Seiko Ltd | 座標検出器 |
DE19743675A1 (de) * | 1996-10-08 | 1998-04-09 | Luk Getriebe Systeme Gmbh | Getriebe |
US6017285A (en) * | 1997-06-27 | 2000-01-25 | Koyo Seiko Co., Ltd. | Variable diameter pulley |
DE10022846B4 (de) * | 1999-05-17 | 2013-03-28 | Schaeffler Technologies AG & Co. KG | Getriebe |
ITTO20030314A1 (it) * | 2003-04-23 | 2004-10-24 | Dayco Europe Srl | Puleggia per una trasmissione a variazione continua di rapporto. |
JP5689973B2 (ja) * | 2011-09-28 | 2015-03-25 | 本田技研工業株式会社 | 無端伝動帯式無段変速機 |
JP5748684B2 (ja) | 2012-02-08 | 2015-07-15 | ジヤトコ株式会社 | 無段変速機 |
-
2015
- 2015-05-13 CN CN201580042020.8A patent/CN106574697B/zh not_active Expired - Fee Related
- 2015-05-13 JP JP2016546341A patent/JP6311027B2/ja not_active Expired - Fee Related
- 2015-05-13 US US15/506,076 patent/US10436293B2/en not_active Expired - Fee Related
- 2015-05-13 WO PCT/JP2015/063744 patent/WO2016035385A1/ja active Application Filing
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS582448U (ja) * | 1981-06-30 | 1983-01-08 | 三菱農機株式会社 | 変速プ−リ |
JPH1113846A (ja) * | 1997-06-27 | 1999-01-22 | Koyo Seiko Co Ltd | 可変径プーリ |
JP2004156686A (ja) * | 2002-11-06 | 2004-06-03 | Toyota Motor Corp | ベルト挟み径/挟み圧直列制御型無段変速装置 |
JP2005053344A (ja) * | 2003-08-05 | 2005-03-03 | Hino Motors Ltd | 動力伝達構造 |
Also Published As
Publication number | Publication date |
---|---|
CN106574697A (zh) | 2017-04-19 |
US20170254394A1 (en) | 2017-09-07 |
JPWO2016035385A1 (ja) | 2017-04-27 |
JP6311027B2 (ja) | 2018-04-11 |
CN106574697B (zh) | 2018-10-19 |
US10436293B2 (en) | 2019-10-08 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
CN110036222B (zh) | 用于机动车的牵引变速器和驱动单元 | |
JPWO2020084936A1 (ja) | 無段変速機 | |
WO2016051845A1 (ja) | 無段変速機 | |
WO2016035385A1 (ja) | 無段変速機 | |
JP6427899B2 (ja) | トロイダル型無段変速機 | |
JP5180931B2 (ja) | ベルト式無段変速機 | |
WO2016038933A1 (ja) | 無段変速機 | |
WO2012131842A1 (ja) | ベルト式無段変速機 | |
JP2018021587A (ja) | 車両用無段変速機 | |
TWI732907B (zh) | 無段變速器 | |
JP4891284B2 (ja) | ベルト式無段変速機 | |
JP2013181590A (ja) | ベルト式無段変速機 | |
JP2015007462A (ja) | Vベルト式無段変速機 | |
JP5969431B2 (ja) | 無段変速機 | |
JP2013217439A (ja) | 動力伝達装置 | |
JP7093258B2 (ja) | トルクベクタリング装置 | |
JP7091769B2 (ja) | 遠心振り子式ダンパ装置 | |
JP2010255728A (ja) | 無段変速機 | |
JP6654931B2 (ja) | 可動装置および無段変速機 | |
JP2020090995A (ja) | 車両用ベルト式無段変速機 | |
JP2009103166A (ja) | ベルト式無段変速機 | |
JP2014098468A (ja) | ベルト式無段変速機 | |
JP2014181794A (ja) | 無段変速機 | |
JP2014137121A (ja) | ベルト式無段変速機の推力機構 | |
JP2015232355A (ja) | オイル供給構造 |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
121 | Ep: the epo has been informed by wipo that ep was designated in this application |
Ref document number: 15837416 Country of ref document: EP Kind code of ref document: A1 |
|
ENP | Entry into the national phase |
Ref document number: 2016546341 Country of ref document: JP Kind code of ref document: A |
|
WWE | Wipo information: entry into national phase |
Ref document number: 15506076 Country of ref document: US |
|
NENP | Non-entry into the national phase |
Ref country code: DE |
|
122 | Ep: pct application non-entry in european phase |
Ref document number: 15837416 Country of ref document: EP Kind code of ref document: A1 |