JP6003268B2 - Stabilizer device and continuously variable transmission - Google Patents
Stabilizer device and continuously variable transmission Download PDFInfo
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- JP6003268B2 JP6003268B2 JP2012134367A JP2012134367A JP6003268B2 JP 6003268 B2 JP6003268 B2 JP 6003268B2 JP 2012134367 A JP2012134367 A JP 2012134367A JP 2012134367 A JP2012134367 A JP 2012134367A JP 6003268 B2 JP6003268 B2 JP 6003268B2
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Description
この発明は、スタビライザ装置およびこれを備えた無段変速機に関する。 The present invention relates to a stabilizer device and a continuously variable transmission including the same.
自動車の無段変速機として、固定シーブおよび可動シーブを有するプライマリプーリと、固定シーブおよび可動シーブを有するセカンダリプーリと、プライマリプーリとセカンダリプーリとに巻き掛けられた巻き掛け伝動部材とを備えているものがある。 A continuously variable transmission for an automobile includes a primary pulley having a fixed sheave and a movable sheave, a secondary pulley having a fixed sheave and a movable sheave, and a winding transmission member wound around the primary pulley and the secondary pulley. There is something.
この種の無段変速機では、巻き掛け伝動部材のうちプライマリプーリとセカンダリプーリとの間にある部分（弦部）は、プーリで規制されていないことから振動（弦振動）しやすく、これにより、騒音特性が悪化するという問題がある。 In this type of continuously variable transmission, the portion (string portion) between the primary pulley and the secondary pulley of the winding transmission member is not restricted by the pulley, and thus easily vibrates (string vibration). There is a problem that noise characteristics deteriorate.
特許文献１には、弦振動を低減するために、スタビライザ装置を使用することが提案されている。スタビライザ装置は、無段変速機において動力を伝える巻き掛け伝動部材を覆うガイドレールと、ガイドレールを揺動可能に支持するストッパとを備えている。
ガイドレールは、巻き掛け伝動部材に幅方向の両側から対向する幅方向対向壁および巻き掛け伝動部材に径方向の両側から対向する径方向対向壁を有している。これらの対向壁によって巻き掛け伝動部材を巻き掛け伝動部材の進行方向に直交する両側（幅方向側および径方向側）から挟むことによって、巻き掛け伝動部材の弦振動が抑制されている。 The guide rail has a width direction facing wall that faces the winding transmission member from both sides in the width direction and a radial direction wall that faces the winding transmission member from both sides in the radial direction. String vibration of the winding transmission member is suppressed by sandwiching the winding transmission member from both sides (width direction side and radial direction side) orthogonal to the traveling direction of the winding transmission member by these opposing walls.
上記特許文献１のものでは、対向壁（幅方向対向壁および／または径方向対向壁）と巻き掛け伝動部材との間の隙間を小さくすることで、振動の抑制効果は大きくなるが、隙間を小さくし過ぎると、対向壁と巻き掛け伝動部材との接触面積が大きくなって、摩擦損失が増加するという問題がある。
In the thing of the said
この発明の目的は、摩擦損失の増加を抑えて、振動の抑制効果を大きくすることにある。 An object of the present invention is to suppress an increase in friction loss and increase a vibration suppressing effect.
この発明は、無段変速機において動力を伝える巻き掛け伝動部材を覆うガイドレールと、前記ガイドレールを揺動可能に支持するストッパとを備えるスタビライザ装置において、前記ガイドレールは、前記巻き掛け伝動部材に径方向の両側から対向する径方向対向壁を有し、前記ガイドレールの前記径方向対向壁の壁内面間距離は、両端部分の少なくとも一方が中央部分に比べて小さくなされているものである。 The present invention provides a stabilizer device including a guide rail that covers a winding transmission member that transmits power in a continuously variable transmission, and a stopper that supports the guide rail so as to be able to swing. The guide rail includes the winding transmission member. The guide wall has a radially opposing wall facing from both sides in the radial direction, and the distance between the wall inner surfaces of the radially opposing walls of the guide rail is such that at least one of both end portions is smaller than the central portion. .
この発明のスタビライザ装置によると、ガイドレールの両端部分の少なくとも一方すなわち巻き掛け伝動部材が出入りする入口部分および出口部分の少なくとも一方における振動が効果的に抑制されるとともに、接触面積の増加が小さく抑えられる。これにより、摩擦損失の増加を抑えて、振動の抑制効果を大きくすることができる。 According to the stabilizer device of the present invention, vibration in at least one of both end portions of the guide rail, that is, at least one of the entrance portion and the exit portion where the winding transmission member enters and exits is effectively suppressed, and an increase in the contact area is suppressed to a small extent. It is done. Thereby, the increase in friction loss can be suppressed and the effect of suppressing vibration can be increased.
以下、図面を参照して、この発明の実施形態について説明する。 Embodiments of the present invention will be described below with reference to the drawings.
図１および図２は、この発明によるスタビライザ装置および無段変速機の１実施形態を示している。 1 and 2 show an embodiment of a stabilizer device and a continuously variable transmission according to the present invention.
無段変速機(1)は、図１に示すように、プライマリプーリ(2)と、セカンダリプーリ(3)と、プライマリプーリ(2)とセカンダリプーリ(3)とに巻き掛けられた巻き掛け伝動部材(4)と、スタビライザ装置(6)とを備えている。 As shown in FIG. 1, the continuously variable transmission (1) has a primary transmission (2), a secondary pulley (3), a primary pulley (2) and a secondary pulley (3) that are wound around a transmission. A member (4) and a stabilizer device (6) are provided.
プライマリプーリ(2)、セカンダリプーリ(3)、巻き掛け伝動部材(4)およびスタビライザ装置(6)は、ケーシング(5)に収容されている。 The primary pulley (2), the secondary pulley (3), the winding transmission member (4), and the stabilizer device (6) are accommodated in the casing (5).
スタビライザ装置(6)は、プライマリプーリ(2)とセカンダリプーリ(3)との間にある巻き掛け伝動部材(4)の弦部（プーリ(2)(3)で規制されていない部分）の移動（振動）を規制する。スタビライザ装置(6)は、図１の下側（プライマリプーリ(2)からセカンダリプーリ(3)に向かう部分）に設けられている。 The stabilizer device (6) moves the string part (the part not regulated by the pulleys (2) and (3)) of the winding transmission member (4) between the primary pulley (2) and the secondary pulley (3). Regulate (vibration). The stabilizer device (6) is provided on the lower side of FIG. 1 (portion from the primary pulley (2) toward the secondary pulley (3)).
無段変速機(1)では、低速走行時に対応する変速比（セカンダリプーリ(3)の回転速度／プライマリプーリ(2)の回転速度）が最小のアンダードライブと、高速走行時に対応する変速比が最大のオーバードライブとの間で変速比が変化する。アンダードライブ状態（図１に二点鎖線で示す）では、プライマリプーリ(2)側の巻き掛け径が最小で、セカンダリプーリ(3)側の巻き掛け径が最大となっている。オーバードライブ状態（図１に実線および破線で示す）では、プライマリプーリ(2)側の巻き掛け径が最大で、セカンダリプーリ(3)側の巻き掛け径が最小となっている。 The continuously variable transmission (1) has an underdrive with a minimum speed ratio (rotational speed of the secondary pulley (3) / rotational speed of the primary pulley (2)) for low speed driving and a gear ratio for high speed driving. The gear ratio changes with the maximum overdrive. In the underdrive state (indicated by a two-dot chain line in FIG. 1), the winding diameter on the primary pulley (2) side is minimum and the winding diameter on the secondary pulley (3) side is maximum. In the overdrive state (shown by solid and broken lines in FIG. 1), the winding diameter on the primary pulley (2) side is the maximum and the winding diameter on the secondary pulley (3) side is the minimum.
巻き掛け伝動部材(4)は、ベルトであっても、チェーンであってもよく、チェーンの場合には、例えば、複数のリンクと、複数のリンクを屈曲可能に連結する複数の第１ピンおよび第２ピンとを備えているものとされる。 The winding transmission member (4) may be a belt or a chain. In the case of a chain, for example, a plurality of links, a plurality of first pins that connect the plurality of links so as to be bent, and And a second pin.
なお、巻き掛け伝動部材(4)の進行方向に直交する方向のうち、プライマリプーリ(2)およびセカンダリプーリ(3)の軸線方向を巻き掛け伝動部材(4)の幅方向といい、巻き掛け伝動部材(4)の幅方向に直交する方向を巻き掛け伝動部材(4)の径方向というものとする。 Of the directions orthogonal to the traveling direction of the winding transmission member (4), the axial direction of the primary pulley (2) and the secondary pulley (3) is referred to as the width direction of the winding transmission member (4). The direction perpendicular to the width direction of the member (4) is referred to as the radial direction of the transmission member (4).
スタビライザ装置(6)は、巻き掛け伝動部材(4)の弦部が相対移動可能に挿通されるガイドレール(7)と、ガイドレール(7)を揺動可能に支持するストッパ(8)とを備えている。 The stabilizer device (6) includes a guide rail (7) through which the string portion of the winding transmission member (4) is inserted so as to be relatively movable, and a stopper (8) that supports the guide rail (7) so as to be swingable. I have.
ストッパ(8)は、円柱状とされて、巻き掛け伝動部材(4)の幅方向にのびている。ストッパ(8)は、変速比が最大のときの巻き掛け伝動部材(4)と変速比が最小のときの巻き掛け伝動部材(4)との交点近傍に配置されている。このストッパ(8)がガイドレール(7)を揺動可能に支持する。 The stopper (8) has a cylindrical shape and extends in the width direction of the winding transmission member (4). The stopper (8) is disposed in the vicinity of the intersection of the winding transmission member (4) when the speed ratio is maximum and the winding transmission member (4) when the speed ratio is minimum. This stopper (8) supports the guide rail (7) in a swingable manner.
ガイドレール(7)は、合成樹脂製とされており、筒状の本体(11)を有している。本体(11)の断面は、巻き掛け伝動部材(4)が若干の遊びを有して挿通可能な大きさの方形に形成されている。これにより、巻き掛け伝動部材(4)の弦部がガイドレール(7)に相対移動可能に挿通されており、巻き掛け伝動部材(4)の弦部の巻き掛け伝動部材(4)の進行方向と直交する方向の動きがガイドレール(7)によって規制されている。 The guide rail (7) is made of synthetic resin and has a cylindrical main body (11). The cross section of the main body (11) is formed in a rectangular shape having a size that allows the winding transmission member (4) to be inserted with some play. Thereby, the string portion of the winding transmission member (4) is inserted into the guide rail (7) so as to be relatively movable, and the traveling direction of the winding transmission member (4) of the string portion of the winding transmission member (4) The movement in the direction orthogonal to is regulated by the guide rail (7).
ガイドレール(7)は、巻き掛け伝動部材(4)の幅方向の中央で２つに分割された形状とされ、両プーリ(2)(3)間に巻き掛けられた後、巻き掛け伝動部材(4)の弦部を巻き掛け伝動部材(4)の幅方向の両側から挟むようにして取り付けられている。 The guide rail (7) has a shape divided into two at the center in the width direction of the winding transmission member (4). After being wound between the pulleys (2) and (3), the winding transmission member The string part of (4) is wound around and attached so as to be sandwiched from both sides in the width direction of the transmission member (4).
ガイドレール(7)の本体(11)は、図２に示すように、巻き掛け伝動部材(4)に幅方向の両側から対向する１対の幅方向対向壁(21)と、巻き掛け伝動部材(4)に径方向の内外両側から対向する１対の径方向対向壁(22)(23)とからなる。径方向対向壁(22)(23)の長さ（巻き掛け伝動部材(4)の進行方向の長さ）は、プーリ(2)(3)と干渉しない程度に長くなされている。幅方向対向壁(21)の長さは、径方向対向壁(22)(23)に比べて短くなされている。 As shown in FIG. 2, the main body (11) of the guide rail (7) includes a pair of width direction facing walls (21) facing the winding transmission member (4) from both sides in the width direction, and the winding transmission member. (4) consists of a pair of radially opposed walls (22) and (23) facing from both the inside and outside in the radial direction. The length of the radially opposing walls (22) and (23) (the length in the traveling direction of the winding transmission member (4)) is long enough not to interfere with the pulleys (2) and (3). The length of the width direction facing wall (21) is shorter than that of the radial direction facing walls (22) and (23).
１対の径方向対向壁(22)(23)は、巻き掛け伝動部材(4)に径方向の内側から対向する内側対向壁(22)と、巻き掛け伝動部材(4)に径方向の外側から対向する外側対向壁(23)とからなる。各径方向対向壁(22)(23)の巻き掛け伝動部材(4)の進行方向の両端部（入口側端部および出口側端部）には、内側対向壁(22)と外側対向壁(23)との壁内面間距離を開口に向かって小さくする円弧部(22a)(23a)が形成されている。 A pair of radially opposing walls (22), (23) is provided on the inner facing wall (22) facing the winding transmission member (4) from the inside in the radial direction and on the outer side in the radial direction on the winding transmission member (4). And an outer facing wall (23) facing each other. At both ends (entrance side end portion and outlet side end portion) in the traveling direction of the winding transmission member (4) of each radial facing wall (22) (23), an inner facing wall (22) and an outer facing wall ( Arc portions (22a) and (23a) are formed to reduce the distance between the wall inner surface and 23) toward the opening.
ガイドレール(7)の本体(11)の巻き掛け伝動部材(4)の進行方向の中央部に、ストッパ(8)を支持するための略Ｕ字状の支持部(12)が一体に設けられている。ガイドレール(7)の支持部(12)の内面は、ガイドレール(7)を保護する略Ｕ字状の金属製補強材(13)によって形成されている。 A substantially U-shaped support part (12) for supporting the stopper (8) is integrally provided at the central part in the advancing direction of the winding transmission member (4) of the main body (11) of the guide rail (7). ing. The inner surface of the support portion (12) of the guide rail (7) is formed by a substantially U-shaped metal reinforcing material (13) that protects the guide rail (7).
図２に示すように、ガイドレール(7)の径方向対向壁(22)(23)の壁内面間距離は、Ｂで示す両端部分がＡで示す中央部分に比べて小さくなされている。これにより、ガイドレール(7)の両端部分すなわち巻き掛け伝動部材(4)が出入りする入口部分および出口部分における振動がより効果的に抑制される。一方、接触面積の増加については、両端部分以外では増加しないので、小さく抑えられ、全体として、摩擦損失の増加を抑えて、振動の抑制効果を大きくすることができる。こうして、互いに相反する特性である摩擦損失の増加の抑制と振動の抑制とを高いレベルでバランスさせることができる。なお、Ｂで示す両端部分のいずれか一方だけをＡで示す中央部分に比べて小さくするようにしてもよい。 As shown in FIG. 2, the distance between the wall inner surfaces of the radially opposing walls (22) and (23) of the guide rail (7) is made smaller at both end portions indicated by B than at the central portion indicated by A. Thus, vibrations at both ends of the guide rail (7), that is, the entrance and exit portions where the winding transmission member (4) enters and exits are more effectively suppressed. On the other hand, the increase in the contact area is not increased except at both end portions, so that the contact area can be suppressed to be small, and the increase in friction loss can be suppressed as a whole, and the vibration suppressing effect can be increased. In this way, it is possible to achieve a high level balance between suppression of increase in friction loss and suppression of vibration, which are mutually contradictory characteristics. Note that only one of the both end portions indicated by B may be made smaller than the central portion indicated by A.
ガイドレール(7)の径方向対向壁(22)(23)の両端部分の壁内面間距離Ｂは、中央部分の壁内面間距離Ａを基準にして、Ｂ≦０．８Ａとすることが好ましく、この条件を満たすように、ＡおよびＢが実験的に決められることがより好ましい。 It is preferable that the distance B between the wall inner surfaces of both end portions of the radially opposing walls (22) and (23) of the guide rail (7) is set to B ≦ 0.8A based on the distance A between the wall inner surfaces of the center portion. More preferably, A and B are determined experimentally so as to satisfy this condition.
上記において、スタビライザ装置(6)は、図１では、下側に１つだけ示されているが、上下に設けてもよく、上側だけに設けるようにしてもよい。また、図１において、ストッパ(8)とガイドレール(7)の支持部(12)との間には、隙間があってもよく（ガイドレール(7)が巻き掛け伝動部材(4)の進行方向に移動可能）、ストッパ(8)とガイドレール(7)の支持部(12)との間の隙間がゼロ（ガイドレール(7)は、ストッパ(8)を中心として回転可能であるが、巻き掛け伝動部材(4)の進行方向への移動は不可能）であってもよい。また、ストッパ(8)は、巻き掛け伝動部材(4)の径方向外側に配置されてもよい。 In the above description, only one stabilizer device (6) is shown on the lower side in FIG. 1, but it may be provided on the upper and lower sides, or may be provided only on the upper side. Further, in FIG. 1, there may be a gap between the stopper (8) and the support portion (12) of the guide rail (7) (the guide rail (7) is wound around and the transmission member (4) is advanced). The gap between the stopper (8) and the guide rail (7) support (12) is zero (the guide rail (7) can rotate around the stopper (8), The winding transmission member (4) may not be movable in the traveling direction). The stopper (8) may be disposed on the radially outer side of the winding transmission member (4).
(1)：無段変速機、(2)：プライマリプーリ、(3)：セカンダリプーリ、(4)：巻き掛け伝動部材、(5)：ケーシング、(6)：スタビライザ装置、(7)：ガイドレール、(8)：ストッパ、(21)：幅方向対向壁、(22)(23)：径方向対向壁 (1): continuously variable transmission, (2): primary pulley, (3): secondary pulley, (4): winding transmission member, (5): casing, (6): stabilizer device, (7): guide Rail, (8): Stopper, (21): Width facing wall, (22) (23): Radial facing wall
Claims (2)
前記ガイドレールは、前記巻き掛け伝動部材に径方向の両側から対向する径方向対向壁を有し、
前記ガイドレールの前記径方向対向壁の壁内面間距離について、前記巻き掛け伝動部材の進行方向の両端部分の少なくとも一方における壁内面間距離が中央部分における壁内面間距離に比べて小さく、前記中央部分における壁内面間距離よりも壁内面間距離が小さい前記両端部分の少なくとも一方は、開口に向かって小さくなっているスタビライザ装置。 In a stabilizer device comprising: a guide rail that covers a winding transmission member that transmits power in a continuously variable transmission; and a stopper that supports the guide rail so as to be swingable.
The guide rail has a radially opposing wall facing the winding transmission member from both sides in the radial direction,
Wherein the interior wall surface distance between the radially opposed walls of the guide rails, the wall inner surface distance of at least one of the traveling direction both end portions of the winding transmission member is smaller than the interior wall surface distance at the central portion, said central The stabilizer device in which at least one of the both end portions having a smaller distance between the wall inner surfaces than the distance between the wall inner surfaces in the portion is smaller toward the opening .
前記スタビライザ装置が請求項１に記載のスタビライザ装置とされている無段変速機。 In a continuously variable transmission comprising a primary pulley, a secondary pulley, a winding transmission member wound around the primary pulley and the secondary pulley, and a stabilizer device,
A continuously variable transmission in which the stabilizer device is the stabilizer device according to claim 1.
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| JP2012134367A JP6003268B2 (en) | 2012-06-14 | 2012-06-14 | Stabilizer device and continuously variable transmission |
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| WO2019209299A1 (en) * | 2018-04-26 | 2019-10-31 | Borgwarner, Inc. | Continuously variable transmission snubber assembly |
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