[go: up one dir, main page]

WO2016038933A1 - Stepless transmission - Google Patents

Stepless transmission Download PDF

Info

Publication number
WO2016038933A1
WO2016038933A1 PCT/JP2015/063776 JP2015063776W WO2016038933A1 WO 2016038933 A1 WO2016038933 A1 WO 2016038933A1 JP 2015063776 W JP2015063776 W JP 2015063776W WO 2016038933 A1 WO2016038933 A1 WO 2016038933A1
Authority
WO
WIPO (PCT)
Prior art keywords
pulley
continuously variable
pair
variable transmission
input
Prior art date
Application number
PCT/JP2015/063776
Other languages
French (fr)
Japanese (ja)
Inventor
アンドレイ ピディン
Original Assignee
本田技研工業株式会社
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 本田技研工業株式会社 filed Critical 本田技研工業株式会社
Publication of WO2016038933A1 publication Critical patent/WO2016038933A1/en

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
    • F16H9/20—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 both flanges of the pulleys 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
    • F16H55/36—Pulleys
    • F16H55/49—Features essential to V-belts pulleys

Definitions

  • the present invention relates to a continuously variable transmission including a pulley.
  • a central wall is provided between pulleys, and two endless transmission members are wound around the central wall to prevent twisting of the endless transmission member.
  • an object of the present invention is to provide a continuously variable transmission that can prevent torsion of an endless transmission member without increasing power loss.
  • the present invention provides: Form V-grooves on the pulley surface of the input pulley and output pulley, A continuously variable transmission for transmitting a driving force by winding an endless transmission member around a V groove of the input pulley and the output pulley;
  • the input pulley or the output pulley is A pair of first pulleys movable in the axial direction with respect to the transmission case;
  • a pair of second pulleys capable of rotating relative to the first pulley and movable integrally in the axial direction;
  • the second pulley has the pulley surface, the endless transmission member is in contact with the pulley surface, and is connected to the rotation shaft so as to rotate integrally with the rotation shaft,
  • the link mechanism is characterized by expanding and contracting so that the movement amounts of the pair of first pulleys in the axial direction are equal to each other.
  • the amount of movement of the pair of first pulleys in the axial direction is equalized by the function of the link mechanism. Therefore, it is possible to prevent the endless transmission member from being twisted due to a difference in the amount of movement of the first pulley.
  • the first pulley and the second pulley can be rotated relative to each other, only the second pulley rotates integrally with the rotating shaft, and the first pulley does not rotate integrally with the rotating shaft. Therefore, according to the continuously variable transmission of the present invention, the mass of the second pulley that rotates integrally with the rotating shaft can be reduced as compared with the conventional one, and the power loss can be reduced.
  • the link mechanism is arranged corresponding to the position of the center in the axial direction of the pair of first pulleys, and the center link is rotatably supported by the transmission case at the center, One end may be connected to the end of the central link, and the other end may be composed of a pair of connecting links connected to the first pulley.
  • a link mechanism can be configured with a total of three links, one central link and two connecting links, and the movement amount in the axial direction of the pair of first pulleys can be synchronized with a simple configuration. Can do.
  • the first pulley includes a sliding portion that slides with the transmission case, and a plurality of the sliding portions are provided at intervals in the radial direction of the first pulley. It is preferable. According to such a configuration, since the first pulley is supported by the plurality of sliding portions, the first pulley can be prevented from being inclined and the first pulley can be stably slid.
  • Explanatory drawing which shows embodiment of the continuously variable transmission of this invention.
  • Explanatory drawing which shows FIG. 1 in the state rotated 90 degrees centering on the rotating shaft.
  • Sectional drawing which shows the continuously variable transmission of this embodiment.
  • the perspective view which shows the friction reduction part arrange
  • Sectional drawing which shows the 2nd pulley of this embodiment.
  • Sectional drawing which shows the state from which the width
  • the continuously variable transmission according to this embodiment includes an input pulley, an output pulley, and a belt-like endless transmission member including a belt (or a chain) wound around the two pulleys.
  • a belt-like endless transmission member including a belt (or 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 power from an internal combustion engine or an electric motor is transmitted.
  • 2 shows FIG. 1 in a state in which the input shaft 2 is rotated by 90 °.
  • the input shaft 2 is rotatably supported by a transmission case 3 that houses 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 4a that form V-grooves 6 around which the endless transmission member 5 is wound.
  • the transmission case 3 includes a fixing portion 7 attached with a bolt 7a.
  • the pair of pulley halves 4 includes a moving portion 8 that can move in the axial direction with respect to the fixed portion 7.
  • the moving unit 8 is attached to the fixed unit 7 so as not to rotate about the input shaft 2.
  • This moving part 8 corresponds to the first pulley of this embodiment.
  • a cylindrical portion 7 b extending toward the adjacent moving portion 8 is provided at the radially inner end of the fixed portion 7.
  • the moving portion 8 is provided so as to be slidable in the axial direction at two locations, the outer peripheral surface of the fixed portion 7 and the outer peripheral surface of the cylindrical portion 7b.
  • two portions that is, a portion that contacts the outer peripheral surface of the fixed portion 7 of the moving portion 8 and a portion that contacts the outer peripheral surface of the cylindrical portion 7b correspond to the sliding portion of the present invention.
  • the two sliding portions are provided corresponding to positions when the winding radius of the endless transmission member 5 is maximized and minimized.
  • a hydraulic chamber 9 is defined between the fixed portion 7 and the moving portion 8.
  • the moving portion 8 is formed with a conical tapered surface 8 a having the same shape as the pulley surface 4 a that forms the V-groove 6.
  • a conical plate-like friction reducing portion 11 having the same shape as the tapered surface 8a is disposed on the tapered surface 8a of the moving portion 8. As shown in FIG. 4, the friction reducing portion 11 is provided with a plurality of rectangular through holes 11a extending in the radial direction. A cylindrical roller 12 is accommodated in each through hole 11a.
  • a conical plate-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 moving portion 8.
  • the pulley half disk 13 slides on the tapered surface 8 a (surface) of the moving unit 8 via the friction reducing unit 11.
  • This pulley half disk 13 corresponds to the second pulley of the present invention.
  • the pulley half body disk 13 includes a pulley surface 4 a that contacts the endless transmission member 5 and forms a V groove 6.
  • a cylindrical portion 13 a that is spline-coupled with the input shaft 2 is provided at the radially inner end of the pulley half disk 13. Thereby, the pulley half body disk 13 rotates integrally with the input shaft 2.
  • the transmission case 3 is provided with a central link 21 corresponding to the centers of the pair of pulley half disks 13.
  • the center link 21 is pivotally supported by the transmission case 3 at the center thereof.
  • One end of a connecting link 23 is rotatably connected to both ends of the central link 21.
  • the other end of each connecting link 23 is rotatably connected to a moving part 8 as a first pulley.
  • the central link 21 and the connecting link 23 constitute a link mechanism.
  • the moving unit 8 moves by supplying or discharging oil to the hydraulic chamber 9, a pair of movements is performed by the action of the central link 21 and the connecting link 23 that form the link mechanism.
  • the amount of movement of the portion 8 in the axial direction becomes equal. Therefore, according to the continuously variable transmission of the present embodiment, when the moving amount of the moving unit 8 is different, the winding position of the endless transmission member 5 is shifted between the input pulley 1 and the output pulley, and the endless transmission member 5 is twisted. Can be prevented.
  • the moving unit 8 is provided in the transmission case 3 through the fixed unit 7 so as not to rotate. For this reason, in the continuously variable transmission according to the present embodiment, only the pulley half disk 13 rotates integrally with the input shaft 2, and the moving unit 8 does not rotate integrally with the input shaft 2. Therefore, according to the continuously variable transmission of the present embodiment, when the input shaft 2 is rotated, the number of components of the input pulley 1 that rotates together with the input shaft 2 is smaller than that in the prior art. Can be reduced, and power loss can be suppressed.
  • the input pulley 1 is rotated with the moving portion 8 as the first pulley provided in the transmission case 3 so as to be prevented from rotating via the fixing portion 7.
  • the input shaft 2 is movable in the axial direction with respect to the input shaft 2 and is constituted by a pulley half disk 13 as a second pulley half that rotates integrally with the input shaft 2.
  • the moving unit 8 as the first pulley that changes the width of the V-groove 6 is not affected by the rotation of the input shaft 2 and no centrifugal force is generated. For this reason, when adjusting the width of the V-groove 6 to change the transmission ratio of the continuously variable transmission, the moving portion 8 can be moved in the axial direction simply by supplying less hydraulic pressure to the hydraulic chamber 9 than before. It is possible to further suppress power loss.
  • a plurality of circumferentially spaced spaces are arranged between the moving portion 8 as the first pulley and the pulley half disk 13 as the second pulley.
  • the friction reduction part 11 which has the roller 12 as a rolling element is provided.
  • the friction reducing unit 11 reduces the friction between the moving unit 8 as the first pulley and the pulley half disk 13 as the second pulley, making the pulley half disk 13 easier to rotate, and further power. Loss can be reduced. Further, since a plurality of rollers 12 as rolling elements are arranged in the circumferential direction at intervals in the friction reducing portion 11, the pulley half disk 13 can be stably rotated.
  • the output pulley having the same configuration as that of the input pulley 1 has been described.
  • 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 is not limited thereto. It is only necessary that the width of the V-groove decreases as the width of the V-groove decreases and the width of the V-groove increases as the width of the V-groove 6 of the input pulley 1 decreases. Therefore, for example, the moving half of the output pulley may be biased to one side by a spring.
  • the motive power source of the moving part 8 of this invention is not restricted to this.
  • the moving portion 8 may be moved by an electric actuator to change / adjust the width of the V groove.
  • the effect of the present invention it is possible to obtain the effect of the present invention that the amount of movement of the pair of moving portions 8 in the axial direction can be made equal by the link mechanism without controlling the electric actuator with high accuracy.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Transmissions By Endless Flexible Members (AREA)

Abstract

Provided is a stepless transmission in which driving force is transmitted by an endless transmission member 5 wound around V-grooves 6 in both an input pulley 1 and an output pulley. The input pulley 1 is provided with: a pair of movable sections 8; a pair of pulley half-disks 13 connected to an input shaft 2; and a center link 21 and connection links 23, 23, the center and connection links 21, 23, 23 connecting the pair of movable sections 8 to each other. The endless transmission member 5 is in contact with the pulley surfaces 4a of the pulley half-disks 13. A link mechanism which is constituted by the center link 21 and the connection links 23, 23 extends and contracts so that the amounts of axial movement of the pair of movable sections 8 are equal.

Description

無段変速機Continuously variable transmission
　本発明は、プーリを備える無段変速機に関する。 The present invention relates to a continuously variable transmission including a pulley.
　従来、入力プーリと出力プーリとに帯状のベルトからなる無端伝達部材が巻き掛けられ、入力プーリと出力プーリとのＶ溝の幅を変更することにより変速比を変更する無段変速機が知られている（例えば、日本国実開昭６１－１３０５９号公報参照）。 2. Description of the Related Art Conventionally, a continuously variable transmission is known in which an endless transmission member made of a belt is wound around an input pulley and an output pulley, and a gear ratio is changed by changing a width of a V groove between the input pulley and the output pulley. (For example, see Japanese Utility Model Publication No. 61-13059).
　日本国実開昭６１－１３０５９号公報のものでは、プーリの間に中央壁を設け、この中央壁を挟むようにして２つの無端伝達部材を巻き掛け、無端伝達部材の捩れを防止している。 In Japanese Utility Model Publication No. 61-13059, a central wall is provided between pulleys, and two endless transmission members are wound around the central wall to prevent twisting of the endless transmission member.
実開昭６１－１３０５９号公報Japanese Utility Model Publication No. 61-13059
　従来の無段変速機では、中央壁及び２つの無端伝達部材を必要とするため、プーリを構成する部品点数が増加してプーリの質量が増加し動力損失が大きくなるという問題がある。 Since the conventional continuously variable transmission requires a central wall and two endless transmission members, there is a problem that the number of parts constituting the pulley increases, the mass of the pulley increases, and the power loss increases.
　本発明は、以上の点に鑑み、動力損失を増加させることなく無端伝達部材の捩れを防止できる無段変速機を提供することを目的とする。 In view of the above points, an object of the present invention is to provide a continuously variable transmission that can prevent torsion of an endless transmission member without increasing power loss.
　［１］上記目的を達成するため、本発明は、
　入力プーリ及び出力プーリのプーリ面でＶ溝を形成し、
　前記入力プーリ及び前記出力プーリのＶ溝に無端伝達部材を巻き掛けて駆動力を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は、
　変速機ケースに対して軸方向に移動可能な一対の第１プーリと、
　前記第１プーリと相対回転可能であると共に、軸方向に一体的に移動可能な一対の第２プーリと、
　一対の前記第１プーリを互いに連結するリンク機構とを備え、
　前記第２プーリは、前記プーリ面を有し、前記プーリ面に前記無端伝達部材が接触すると共に、回転軸と一体に回転するように前記回転軸に連結され、
　前記リンク機構は、一対の前記第１プーリの軸方向への移動量が夫々等しくなるように伸縮することを特徴とする。 [1] In order to achieve the above object, the present invention provides:
Form V-grooves on the pulley surface of the input pulley and output pulley,
A continuously variable transmission for transmitting a driving force by winding an endless transmission member around a V groove of the input pulley and the output pulley;
The input pulley or the output pulley is
A pair of first pulleys movable in the axial direction with respect to the transmission case;
A pair of second pulleys capable of rotating relative to the first pulley and movable integrally in the axial direction;
A link mechanism for connecting the pair of first pulleys to each other;
The second pulley has the pulley surface, the endless transmission member is in contact with the pulley surface, and is connected to the rotation shaft so as to rotate integrally with the rotation shaft,
The link mechanism is characterized by expanding and contracting so that the movement amounts of the pair of first pulleys in the axial direction are equal to each other.
　本発明によれば、リンク機構の働きによって一対の第１プーリの軸方向への移動量が等しくなる。従って、第１プーリの移動量が異なることによる無端伝達部材の捩れを防止することができる。 According to the present invention, the amount of movement of the pair of first pulleys in the axial direction is equalized by the function of the link mechanism. Therefore, it is possible to prevent the endless transmission member from being twisted due to a difference in the amount of movement of the first pulley.
　また、第１プーリと第２プーリとは相対回転可能であるため、回転軸と一体に回転するのは第２プーリのみとなり、第１プーリは回転軸と一体回転しない。従って、本発明の無段変速機によれば、回転軸と一体に回転する第２プーリの質量を従来よりも減少させることができ、動力損失の低減を図ることができる。 Also, since the first pulley and the second pulley can be rotated relative to each other, only the second pulley rotates integrally with the rotating shaft, and the first pulley does not rotate integrally with the rotating shaft. Therefore, according to the continuously variable transmission of the present invention, the mass of the second pulley that rotates integrally with the rotating shaft can be reduced as compared with the conventional one, and the power loss can be reduced.
　［２］また、本発明においては、リンク機構を、一対の第１プーリの軸方向中央の位置に対応させて配置されると共に変速機ケースに中央を回転自在に軸支される中央リンクと、一端を中央リンクの端部に連結されると共に他端を第１プーリに連結される一対の連結リンクとで構成することができる。 [2] Further, in the present invention, the link mechanism is arranged corresponding to the position of the center in the axial direction of the pair of first pulleys, and the center link is rotatably supported by the transmission case at the center, One end may be connected to the end of the central link, and the other end may be composed of a pair of connecting links connected to the first pulley.
　かかる構成によれば、１つの中央リンクと２つの連結リンクの合計３つのリンクでリンク機構を構成することができ、単純な構成で一対の第１プーリの軸方向への移動量を同期させることができる。 According to such a configuration, a link mechanism can be configured with a total of three links, one central link and two connecting links, and the movement amount in the axial direction of the pair of first pulleys can be synchronized with a simple configuration. Can do.
　［３］また、本発明において、第１プーリは変速機ケースとの間で摺動する摺動部を備え、当該摺動部は、第１プーリの径方向に間隔を存して複数設けられることが好ましい。かかる構成によれば、第１プーリが複数の摺動部で支えられるため、第１プーリが傾くことを防止して、第１プーリを安定して摺動させることができる。 [3] In the present invention, the first pulley includes a sliding portion that slides with the transmission case, and a plurality of the sliding portions are provided at intervals in the radial direction of the first pulley. It is preferable. According to such a configuration, since the first pulley is supported by the plurality of sliding portions, the first pulley can be prevented from being inclined and the first pulley can be stably slid.
本発明の無段変速機の実施形態を示す説明図。Explanatory drawing which shows embodiment of the continuously variable transmission of this invention. 図１を回転軸を中心に９０°回転させた状態で示す説明図。Explanatory drawing which shows FIG. 1 in the state rotated 90 degrees centering on the rotating shaft. 本実施形態の無段変速機を示す断面図。Sectional drawing which shows the continuously variable transmission of this embodiment. 本実施形態の第１プーリと第２プーリの間に配置される摩擦低減部を示す斜視図。The perspective view which shows the friction reduction part arrange | positioned between the 1st pulley and 2nd pulley of this embodiment. 本実施形態の第２プーリを示す断面図。Sectional drawing which shows the 2nd pulley of this embodiment. 本実施形態の無段変速機においてＶ溝の幅が最も狭くなる状態を示す断面図。Sectional drawing which shows the state from which the width | variety of a V-groove becomes the narrowest in the continuously variable transmission of this embodiment.
　図を参照して、本発明の無段変速機の実施形態を説明する。本実施形態の無段変速機は、入力プーリと、出力プーリと、この２つのプーリに巻き掛けられるベルト（チェーンでもよい）からなる帯状の無端伝達部材とを備える。なお、本実施形態においては、入力プーリと出力プーリとは同様に構成されるため、入力プーリを詳細に説明して、出力プーリの詳細な説明は省略する。 Referring to the drawings, an embodiment of a continuously variable transmission according to the present invention will be described. The continuously variable transmission according to this embodiment includes an input pulley, an output pulley, and a belt-like endless transmission member including a belt (or a chain) wound around the two pulleys. In this embodiment, since 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.
　図１及び図２に示すように、入力プーリ１は、内燃機関や電動機からの動力が伝達される回転軸としての入力軸２に設けられるものである。なお、図２は、図１を入力軸２を中心に９０°回転させた状態で示している。図３に断面で示すように、入力軸２は、入力プーリ１を収容する変速機ケース３に回転自在に軸支されている。入力プーリ１は、一対のプーリ半体４で構成される。 As shown in FIGS. 1 and 2, the input pulley 1 is provided on an input shaft 2 as a rotating shaft to which power from an internal combustion engine or an electric motor is transmitted. 2 shows FIG. 1 in a state in which the input shaft 2 is rotated by 90 °. As shown in cross section in FIG. 3, the input shaft 2 is rotatably supported by a transmission case 3 that houses the input pulley 1. The input pulley 1 is composed of a pair of pulley halves 4.
　プーリ半体４には、無端伝達部材５が巻き掛けられるＶ溝６を形成するプーリ面４ａが夫々設けられている。変速機ケース３は、ボルト７ａで取り付けられた固定部７を備える。 The pulley half 4 is provided with pulley surfaces 4a that form V-grooves 6 around which the endless transmission member 5 is wound. The transmission case 3 includes a fixing portion 7 attached with a bolt 7a.
　一対のプーリ半体４は、固定部７に対して軸方向に移動可能な移動部８を備える。移動部８は固定部７に対して入力軸２を中心に回転不能に取り付けられている。この移動部８が本実施形態の第１プーリに該当する。固定部７の径方向内端部には、隣接する移動部８側に向かって延びる筒状部７ｂが設けられている。 The pair of pulley halves 4 includes a moving portion 8 that can move in the axial direction with respect to the fixed portion 7. The moving unit 8 is attached to the fixed unit 7 so as not to rotate about the input shaft 2. This moving part 8 corresponds to the first pulley of this embodiment. A cylindrical portion 7 b extending toward the adjacent moving portion 8 is provided at the radially inner end of the fixed portion 7.
　移動部８は、固定部７の外周面と筒状部７ｂの外周面の２カ所で軸方向に摺動可能に設けられている。本実施形態においては、移動部８の固定部７の外周面と接触する部分、及び筒状部７ｂの外周面と接触する部分の２カ所が本発明の摺動部に該当する。なお、２つの摺動部は、無端伝達部材５の巻き掛け半径が最大となるときと最小となるときの位置に対応させて設けられている。このように構成することにより、第１プーリとしての移動部８が２つの摺動部で支えられ、移動部８が傾くことを防止して、移動部８を安定して固定部７で摺動させることができる。 The moving portion 8 is provided so as to be slidable in the axial direction at two locations, the outer peripheral surface of the fixed portion 7 and the outer peripheral surface of the cylindrical portion 7b. In the present embodiment, two portions, that is, a portion that contacts the outer peripheral surface of the fixed portion 7 of the moving portion 8 and a portion that contacts the outer peripheral surface of the cylindrical portion 7b correspond to the sliding portion of the present invention. Note that the two sliding portions are provided corresponding to positions when the winding radius of the endless transmission member 5 is maximized and minimized. With this configuration, the moving portion 8 as the first pulley is supported by the two sliding portions, the moving portion 8 is prevented from being inclined, and the moving portion 8 is stably slid by the fixed portion 7. Can be made.
　固定部７と移動部８との間には油圧室９が画成される。移動部８には、Ｖ溝６を形成するプーリ面４ａと同一形状の円錐状のテーパー面８ａが形成されている。 A hydraulic chamber 9 is defined between the fixed portion 7 and the moving portion 8. The moving portion 8 is formed with a conical tapered surface 8 a having the same shape as the pulley surface 4 a that forms the V-groove 6.
　また、移動部８のテーパー面８ａには、テーパー面８ａと同一形状の円錐板状の摩擦低減部１１が配置されている。図４に示すように、摩擦低減部１１には、径方向に延びる長方形状の貫通孔１１ａが複数個所に設けられている。各貫通孔１１ａには、円柱状のころ１２が収容されている。 Further, a conical plate-like friction reducing portion 11 having the same shape as the tapered surface 8a is disposed on the tapered surface 8a of the moving portion 8. As shown in FIG. 4, the friction reducing portion 11 is provided with a plurality of rectangular through holes 11a extending in the radial direction. A cylindrical roller 12 is accommodated in each through hole 11a.
　摩擦低減部１１の移動部８とは反対側の面には、摩擦低減部１１と同形状の円錐板状のプーリ半体ディスク１３が配置されている。プーリ半体ディスク１３は、摩擦低減部１１を介して移動部８のテーパー面８ａ（表面）を摺動する。このプーリ半体ディスク１３が本発明の第２プーリに相当する。プーリ半体ディスク１３は、無端伝達部材５と接触してＶ溝６を構成するプーリ面４ａを備える。 A conical plate-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 moving portion 8. The pulley half disk 13 slides on the tapered surface 8 a (surface) of the moving unit 8 via the friction reducing unit 11. This pulley half disk 13 corresponds to the second pulley of the present invention. The pulley half body disk 13 includes a pulley surface 4 a that contacts the endless transmission member 5 and forms a V groove 6.
　図５に示すように、プーリ半体ディスク１３の径方向内端部には、入力軸２とスプライン結合する筒状部１３ａが設けられている。これにより、プーリ半体ディスク１３は、入力軸２と一体に回転する。 As shown in FIG. 5, a cylindrical portion 13 a that is spline-coupled with the input shaft 2 is provided at the radially inner end of the pulley half disk 13. Thereby, the pulley half body disk 13 rotates integrally with the input shaft 2.
　図６に示すように、油圧室９にオイルが供給されると、移動部８が入力軸２の中央へ移動し、入力プーリ１のＶ溝６の幅が狭くなる。これにより、入力プーリ１に巻き掛けられた無端伝達部材５の巻き掛け半径が大きくなる。 As shown in FIG. 6, when oil is supplied to the hydraulic chamber 9, the moving unit 8 moves to the center of the input shaft 2, and the width of the V groove 6 of the input pulley 1 becomes narrow. Thereby, the winding radius of the endless transmission member 5 wound around the input pulley 1 is increased.
　逆に、油圧室９からオイルを排出すると移動部８同士が入力軸２の軸方向に離隔するように移動し、図２及び図３に示すように、入力プーリ１のＶ溝６の幅が広くなる。これにより、入力プーリ１に巻き掛けられた無端伝達部材５の巻き掛け半径が小さくなる。本実施形態の無段変速機は、このように無端伝達部材５の巻き掛け半径を調節することにより変速比を変更する。油圧室９へのオイルの供給及び排出は図示省略した油圧制御回路によって行われる。 Conversely, when the oil is discharged from the hydraulic chamber 9, the moving parts 8 move so as to be separated from each other in the axial direction of the input shaft 2, and the width of the V groove 6 of the input pulley 1 is reduced as shown in FIGS. 2 and 3. Become wider. Thereby, the winding radius of the endless transmission member 5 wound around the input pulley 1 becomes small. The continuously variable transmission of the present embodiment changes the gear ratio by adjusting the winding radius of the endless transmission member 5 in this way. Supply and discharge of oil to the hydraulic chamber 9 are performed by a hydraulic control circuit (not shown).
　また、図２及び図３に示すように、変速機ケース３には、一対のプーリ半体ディスク１３の中心に対応させて中央リンク２１が配置されている。中央リンク２１は、その中央を変速機ケース３に回転自在に軸支されている。中央リンク２１の両端には、夫々連結リンク２３の一方の端部が回転自在に連結されている。また、各連結リンク２３の他方の端部は、第１プーリとしての移動部８に夫々回転自在に連結されている。本実施形態においては、中央リンク２１と連結リンク２３とがリンク機構を構成する。 Further, as shown in FIGS. 2 and 3, the transmission case 3 is provided with a central link 21 corresponding to the centers of the pair of pulley half disks 13. The center link 21 is pivotally supported by the transmission case 3 at the center thereof. One end of a connecting link 23 is rotatably connected to both ends of the central link 21. The other end of each connecting link 23 is rotatably connected to a moving part 8 as a first pulley. In the present embodiment, the central link 21 and the connecting link 23 constitute a link mechanism.
　本実施形態の無段変速機によれば、油圧室９へのオイルの供給又は排出によって移動部８が移動すると、リンク機構を構成する中央リンク２１と連結リンク２３との働きにより、一対の移動部８の軸方向への移動量が等しくなる。従って、本実施形態の無段変速機によれば、移動部８の移動量が異なることによって、入力プーリ１と出力プーリとで無端伝達部材５の巻き掛け位置がずれて無端伝達部材５が捩れてしまうことを防止することができる。 According to the continuously variable transmission of the present embodiment, when the moving unit 8 moves by supplying or discharging oil to the hydraulic chamber 9, a pair of movements is performed by the action of the central link 21 and the connecting link 23 that form the link mechanism. The amount of movement of the portion 8 in the axial direction becomes equal. Therefore, according to the continuously variable transmission of the present embodiment, when the moving amount of the moving unit 8 is different, the winding position of the endless transmission member 5 is shifted between the input pulley 1 and the output pulley, and the endless transmission member 5 is twisted. Can be prevented.
　また、本実施形態の無段変速機では、移動部８は固定部７を介して変速機ケース３に回転不能に設けられている。このため、本実施形態の無段変速機では、プーリ半体ディスク１３のみが入力軸２と一体に回転し、移動部８は入力軸２と一体に回転しない。従って、本実施形態の無段変速機によれば、入力軸２を回転させるときに、入力軸２と共に回転する入力プーリ１の構成部品が従来よりも少ないため、入力プーリ１の実質的な質量を低減させることができ、動力損失を抑制することができる。 In the continuously variable transmission according to this embodiment, the moving unit 8 is provided in the transmission case 3 through the fixed unit 7 so as not to rotate. For this reason, in the continuously variable transmission according to the present embodiment, only the pulley half disk 13 rotates integrally with the input shaft 2, and the moving unit 8 does not rotate integrally with the input shaft 2. Therefore, according to the continuously variable transmission of the present embodiment, when the input shaft 2 is rotated, the number of components of the input pulley 1 that rotates together with the input shaft 2 is smaller than that in the prior art. Can be reduced, and power loss can be suppressed.
　また、本実施形態の無段変速機においては、入力プーリ１を、変速機ケース３に固定部７を介して回転が阻止されるように設けられた第１プーリとしての移動部８と、回転軸としての入力軸２に対して軸方向に移動可能であると共に、入力軸２と一体回転する第２プーリ半体としてのプーリ半体ディスク１３とで構成している。 Further, in the continuously variable transmission according to the present embodiment, the input pulley 1 is rotated with the moving portion 8 as the first pulley provided in the transmission case 3 so as to be prevented from rotating via the fixing portion 7. The input shaft 2 is movable in the axial direction with respect to the input shaft 2 and is constituted by a pulley half disk 13 as a second pulley half that rotates integrally with the input shaft 2.
　このように構成することにより、Ｖ溝６の幅を変更する第１プーリとしての移動部８が入力軸２の回転の影響を受けず、遠心力が発生しない。このため、無段変速機の変速比を変更すべくＶ溝６を幅を調整するときに、従来よりも少ない油圧を油圧室９に供給するだけで移動部８を軸方向に移動させることができ、更なる動力損失の抑制を図ることができる。 With this configuration, the moving unit 8 as the first pulley that changes the width of the V-groove 6 is not affected by the rotation of the input shaft 2 and no centrifugal force is generated. For this reason, when adjusting the width of the V-groove 6 to change the transmission ratio of the continuously variable transmission, the moving portion 8 can be moved in the axial direction simply by supplying less hydraulic pressure to the hydraulic chamber 9 than before. It is possible to further suppress power loss.
　また、本実施形態の無段変速機においては、第１プーリとしての移動部８と第２プーリとしてのプーリ半体ディスク１３との間に、周方向に間隔を存して配置される複数の転動体としてのころ１２を有する摩擦低減部１１を設けている。 Further, in the continuously variable transmission according to the present embodiment, a plurality of circumferentially spaced spaces are arranged between the moving portion 8 as the first pulley and the pulley half disk 13 as the second pulley. The friction reduction part 11 which has the roller 12 as a rolling element is provided.
　この摩擦低減部１１により、第１プーリとしての移動部８と第２プーリとしてのプーリ半体ディスク１３との間の摩擦を低減させて、プーリ半体ディスク１３を回転し易くし、更なる動力損失の低減を図ることができる。また、摩擦低減部１１には転動体としてのころ１２が周方向に間隔を存して複数配置されているため、プーリ半体ディスク１３を安定して回転させることができる。 The friction reducing unit 11 reduces the friction between the moving unit 8 as the first pulley and the pulley half disk 13 as the second pulley, making the pulley half disk 13 easier to rotate, and further power. Loss can be reduced. Further, since a plurality of rollers 12 as rolling elements are arranged in the circumferential direction at intervals in the friction reducing portion 11, the pulley half disk 13 can be stably rotated.
　なお、本実施形態においては、出力プーリを入力プーリ１と同様に構成したものを説明したが、本発明の出力プーリの移動半体は、これに限らず、入力プーリ１のＶ溝６の幅の増加に伴いＶ溝の幅が減少し、入力プーリ１のＶ溝６の幅の減少に伴いＶ溝の幅が増加するように構成されていればよい。従って、例えば、出力プーリの移動半体をスプリングで一方に付勢するように構成してもよい。 In the present embodiment, the output pulley having the same configuration as that of the input pulley 1 has been described. However, 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 is not limited thereto. It is only necessary that the width of the V-groove decreases as the width of the V-groove decreases and the width of the V-groove increases as the width of the V-groove 6 of the input pulley 1 decreases. Therefore, for example, the moving half of the output pulley may be biased to one side by a spring.
　また、本実施形態においては、移動部８を油圧で移動させるものを説明したが、本発明の移動部８の動力源はこれに限らない。例えば、電動アクチュエータによって移動部８を移動させてＶ溝の幅を変更・調節してもよい。これによっても、電動アクチュエータを高精度に制御することなく、リンク機構によって、一対の移動部８の軸方向への移動量を等しくすることができるという本発明の効果を得ることができる。 Moreover, in this embodiment, although what moved the moving part 8 hydraulically was demonstrated, the motive power source of the moving part 8 of this invention is not restricted to this. For example, the moving portion 8 may be moved by an electric actuator to change / adjust the width of the V groove. Also by this, it is possible to obtain the effect of the present invention that the amount of movement of the pair of moving portions 8 in the axial direction can be made equal by the link mechanism without controlling the electric actuator with high accuracy.
１　入力プーリ
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　固定部
７ａ　ボルト
７ｂ　筒状部
８　移動部（第１プーリ）
８ａ　テーパー面
９　油圧室
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プーリ）
１３ａ　筒状部
１４　ボルト
１５　固定部
１６　ピストン部（第１プーリ半体）
１６ａ　テーパー面
１７　油圧室
２１　中央リンク
２３　連結リンク 1 Input pulley 2 Input shaft (rotating shaft)
3 Transmission case 4 Pulley half 4a Pulley surface 5 Endless transmission member 6 V groove 7 Fixing portion 7a Bolt 7b Cylindrical portion 8 Moving portion (first pulley)
8a Tapered surface 9 Hydraulic chamber 11 Friction reducing portion 11a Through hole 12 Roller 13 Pulley half disk (second pulley)
13a Cylindrical part 14 Bolt 15 Fixing part 16 Piston part (first pulley half)
16a Tapered surface 17 Hydraulic chamber 21 Central link 23 Link

Claims (4)

  1. 　入力プーリ及び出力プーリのプーリ面でＶ溝を形成し、
    　前記入力プーリ及び前記出力プーリのＶ溝に無端伝達部材を巻き掛けて駆動力を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は、
    　変速機ケースに対して軸方向に移動可能な一対の第１プーリと、
    　前記第１プーリと相対回転可能であると共に、軸方向に一体的に移動可能な一対の第２プーリと、
    　一対の前記第１プーリを互いに連結するリンク機構とを備え、
    　前記第２プーリは、前記プーリ面を有し、前記プーリ面に前記無端伝達部材が接触すると共に、回転軸と一体に回転するように前記回転軸に連結され、
    　前記リンク機構は、一対の前記第１プーリの軸方向への移動量が夫々等しくなるように伸縮することを特徴とする無段変速機。     Form V-grooves on the pulley surface of the input pulley and output pulley,
    A continuously variable transmission for transmitting a driving force by winding an endless transmission member around a V groove of the input pulley and the output pulley;
    The input pulley or the output pulley is
    A pair of first pulleys movable in the axial direction with respect to the transmission case;
    A pair of second pulleys capable of rotating relative to the first pulley and movable integrally in the axial direction;
    A link mechanism for connecting the pair of first pulleys to each other;
    The second pulley has the pulley surface, the endless transmission member is in contact with the pulley surface, and is connected to the rotation shaft so as to rotate integrally with the rotation shaft,
    The continuously variable transmission is characterized in that the link mechanism expands and contracts so that the movement amounts of the pair of first pulleys in the axial direction are equal to each other.
  2. 　請求項１記載の無段変速機であって、
    　前記リンク機構は、
    　一対の前記第１プーリの軸方向中央の位置に対応させて配置され、前記変速機ケースに中央を回転自在に軸支される中央リンクと、
    　一端を前記中央リンクの端部と連結し、他端を前記第１プーリに連結する一対の連結リンクとを備えることを特徴とする無段変速機。     The continuously variable transmission according to claim 1,
    The link mechanism is
    A central link that is arranged corresponding to a position in the axial center of the pair of first pulleys and is pivotally supported by the transmission case so that the center is rotatable;
    A continuously variable transmission, comprising: a pair of connecting links that connect one end to the end of the central link and connect the other end to the first pulley.
  3. 　請求項２に記載の無段変速機であって、
    　前記第１プーリは、前記変速機ケースとの間で摺動する摺動部を備え、
    　前記摺動部は、前記第１プーリの径方向に間隔を存して複数設けられることを特徴とする無段変速機。     The continuously variable transmission according to claim 2,
    The first pulley includes a sliding portion that slides between the transmission case and the first pulley.
    A continuously variable transmission, wherein a plurality of the sliding portions are provided at intervals in the radial direction of the first pulley.
  4. 　請求項１に記載の無段変速機であって、
    　前記第１プーリは、前記変速機ケースとの間で摺動する摺動部を備え、
    　前記摺動部は、前記第１プーリの径方向に間隔を存して複数設けられることを特徴とする無段変速機。     The continuously variable transmission according to claim 1,
    The first pulley includes a sliding portion that slides between the transmission case and the first pulley.
    A continuously variable transmission, wherein a plurality of the sliding portions are provided at intervals in the radial direction of the first pulley.
PCT/JP2015/063776 2014-09-10 2015-05-13 Stepless transmission WO2016038933A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2014-184203 2014-09-10
JP2014184203 2014-09-10

Publications (1)

Publication Number Publication Date
WO2016038933A1 true WO2016038933A1 (en) 2016-03-17

Family

ID=55458696

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2015/063776 WO2016038933A1 (en) 2014-09-10 2015-05-13 Stepless transmission

Country Status (1)

Country Link
WO (1) WO2016038933A1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2020129214A1 (en) * 2018-12-20 2020-06-25 三菱電機株式会社 Device

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4914866A (en) * 1972-06-06 1974-02-08

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4914866A (en) * 1972-06-06 1974-02-08

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2020129214A1 (en) * 2018-12-20 2020-06-25 三菱電機株式会社 Device
JPWO2020129214A1 (en) * 2018-12-20 2021-09-02 三菱電機株式会社 device
US11582875B2 (en) 2018-12-20 2023-02-14 Mitsubishi Electric Corporation Rail mount device with locking member and release button
JP7262486B2 (en) 2018-12-20 2023-04-21 三菱電機株式会社 device

Similar Documents

Publication Publication Date Title
US6805654B2 (en) Toroidal-type continuously variable transmission
US9347531B2 (en) Belt-type continuously variable transmission
EP2988022B1 (en) Variable-speed belt drive assembly
JP7339909B2 (en) Driven pulley device
JP2019138443A (en) Rotor and its manufacturing method
CN103104666A (en) Diameter changing hub type mechanical transmission stepless speed regulator utilizing friction to drag and drive
JP5877900B2 (en) Metal belt element
WO2016038933A1 (en) Stepless transmission
JP6279755B2 (en) Continuously variable transmission
US20160053872A1 (en) Serial continuously variable transmission
JP2018096461A (en) Belt-type continuously variable transmission
JP7002283B2 (en) Toroidal continuously variable transmission
WO2015016080A1 (en) Toroidal continuously variable transmission
JP6311027B2 (en) Continuously variable transmission
JP4891284B2 (en) Belt type continuously variable transmission
JP5126016B2 (en) Belt type continuously variable transmission
JP2009264509A (en) Shaft coupling and pulley having the same
JP6528358B2 (en) Toroidal type continuously variable transmission
JP5282748B2 (en) Belt type continuously variable transmission
JP6845093B2 (en) Winding transmission device
JP7094629B2 (en) Belt type continuously variable transmission
JP2016080109A (en) Gear change mechanism of transmission
JP5969431B2 (en) Continuously variable transmission
JP2020143734A (en) Continuously variable transmission
JP6379216B2 (en) Belt type continuously variable transmission

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: 15839449

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 15839449

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: JP