JP5521987B2 - Power transmission device - Google Patents
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- JP5521987B2 JP5521987B2 JP2010254548A JP2010254548A JP5521987B2 JP 5521987 B2 JP5521987 B2 JP 5521987B2 JP 2010254548 A JP2010254548 A JP 2010254548A JP 2010254548 A JP2010254548 A JP 2010254548A JP 5521987 B2 JP5521987 B2 JP 5521987B2
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この発明は、自動車等の車両の無段変速機（ＣＶＴ）に好適な動力伝達装置に関する。 The present invention relates to a power transmission device suitable for a continuously variable transmission (CVT) of a vehicle such as an automobile.
自動車用無段変速機（動力伝達装置）として、円錐面状シーブ面をそれぞれ有する固定シーブおよび可動シーブからなるプライマリプーリと、円錐面状シーブ面をそれぞれ有する固定シーブおよび可動シーブからなるセカンダリプーリと、両プーリ間に巻き掛けられた巻き掛け伝動部材と、これらを収容するケーシングと、ケーシング内に設けられた支持軸に支持されて巻き掛け伝動部材の弦部が相対移動可能に挿通されることで巻き掛け伝動部材の動きを規制するガイドレールと、スタビライザを支持する支持軸とを備えているものが知られている（特許文献１）。 As a continuously variable transmission (power transmission device) for an automobile, a primary pulley composed of a fixed sheave and a movable sheave each having a conical surface sheave surface, and a secondary pulley composed of a fixed sheave and a movable sheave each having a conical surface sheave surface A winding transmission member wound between the pulleys, a casing for accommodating these members, and a support shaft provided in the casing, so that the string portion of the winding transmission member is inserted so as to be relatively movable. And a guide rail that regulates the movement of the winding transmission member and a support shaft that supports the stabilizer are known (Patent Document 1).
この種の動力伝達装置では、巻き掛け伝動部材のうちプーリと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、これが耳障りな音であるために、騒音特性が悪化するという問題があり、特許文献１のものでは、ガイドレール（本明細書では、「スタビライザ」と称す）によって巻き掛け伝動部材の動きを規制することで、弦振動の低減が図られている。
In this type of power transmission device, the portion (string portion) between the pulleys of the wrapping transmission member is not restricted by the pulley, so it is easy to vibrate (string vibration). For this reason, there is a problem that noise characteristics deteriorate. In the case of
上記従来の動力伝達装置では、支持軸がケーシングに固定されるとともに、スタビライザが１対の挟持壁によって支持軸を両側から挟むようにして支持軸に相対移動可能に取り付けられることで、スタビライザが支持軸に対して移動可能とされることがあり、この場合には、スタビライザの支持軸軸方向への移動は、防止する必要がある。スタビライザの支持軸軸方向への移動を防止するには、例えば、スタビライザの挟持壁を挟むようにして１対の環状凸部を支持軸に設ければよいが、他の部材（例えばプーリ）との干渉を避けるために、スタビライザ側に十分な大きさの挟持壁を設けることが難しいという制約があり、この制約の下に、振動が大きくなった場合でも、支持軸とスタビライザとの軸方向のずれを防止する必要がある。 In the above-described conventional power transmission device, the support shaft is fixed to the casing, and the stabilizer is attached to the support shaft so as to be relatively movable by sandwiching the support shaft from both sides by a pair of clamping walls, so that the stabilizer is attached to the support shaft. In this case, it is necessary to prevent the stabilizer from moving in the direction of the support shaft. In order to prevent the stabilizer from moving in the direction of the support shaft, for example, a pair of annular protrusions may be provided on the support shaft so as to sandwich the holding wall of the stabilizer, but interference with other members (for example, pulleys) In order to avoid this, there is a restriction that it is difficult to provide a sufficiently large holding wall on the stabilizer side.Under this restriction, even if the vibration becomes large, the axial displacement between the support shaft and the stabilizer is not allowed. There is a need to prevent.
この発明の目的は、他の部材との干渉を避け、しかも、振動が大きくなった場合でも、スタビライザの支持軸軸方向へのずれを確実に防止することができる動力伝達装置を提供することにある。 An object of the present invention is to provide a power transmission device that can avoid interference with other members and reliably prevent the stabilizer from shifting in the direction of the support shaft even when vibrations increase. is there.
第１の発明による動力伝達装置は、固定シーブおよび可動シーブからなるプライマリプーリと、固定シーブおよび可動シーブからなるセカンダリプーリと、両プーリ間に巻き掛けられた巻き掛け伝動部材と、これらを収容するケーシングと、巻き掛け伝動部材の弦部が相対移動可能に挿通されることで巻き掛け伝動部材の動きを規制するスタビライザと、スタビライザを支持する支持軸とを備えており、スタビライザは、スタビライザに設けられた１対の挟持壁によって支持軸を両側から挟むようにして支持軸に相対移動可能に取り付けられている動力伝達装置において、支持軸のスタビライザ中央に相当する位置に環状凸部が設けられ、スタビライザの挟持壁の長さ方向中央部に設けられた凹部と環状凸部の挟持壁対向部分とが嵌まり合うことによって、スタビライザの支持軸軸方向の移動が阻止されていることを特徴とするものである。 A power transmission device according to a first aspect of the present invention accommodates a primary pulley composed of a fixed sheave and a movable sheave, a secondary pulley composed of a fixed sheave and a movable sheave, a wound transmission member wound around both pulleys, and these. The stabilizer includes a casing, a stabilizer that restricts the movement of the winding transmission member by inserting the string portion of the winding transmission member so as to be relatively movable, and a support shaft that supports the stabilizer. The stabilizer is provided in the stabilizer. In the power transmission device attached to the support shaft so as to be relatively movable so that the support shaft is sandwiched from both sides by the pair of sandwiching walls, an annular convex portion is provided at a position corresponding to the center of the stabilizer of the support shaft. The concave portion provided in the central portion in the length direction of the sandwiching wall and the sandwiching wall facing portion of the annular convex portion fit each other. And by, and it is characterized in that the movement of the support shaft axis direction of the stabilizer is prevented.
第２の発明による動力伝達装置は、固定シーブおよび可動シーブからなるプライマリプーリと、固定シーブおよび可動シーブからなるセカンダリプーリと、両プーリ間に巻き掛けられた巻き掛け伝動部材と、これらを収容するケーシングと、巻き掛け伝動部材の弦部が相対移動可能に挿通されることで巻き掛け伝動部材の動きを規制するスタビライザと、スタビライザを支持する支持軸とを備えており、スタビライザは、スタビライザに設けられた１対の挟持壁によって支持軸を両側から挟むようにして支持軸に相対移動可能に取り付けられている動力伝達装置において、支持軸のスタビライザ中央に相当する位置に環状凹部が設けられ、スタビライザの挟持壁の長さ方向中央部に設けられた凸部と環状凹部の挟持壁対向部分とが嵌まり合うことによって、スタビライザの支持軸軸方向の移動が阻止されていることを特徴とするものである。 A power transmission device according to a second invention accommodates a primary pulley composed of a fixed sheave and a movable sheave, a secondary pulley composed of a fixed sheave and a movable sheave, a winding transmission member wound around both pulleys, and these The stabilizer includes a casing, a stabilizer that restricts the movement of the winding transmission member by inserting the string portion of the winding transmission member so as to be relatively movable, and a support shaft that supports the stabilizer. The stabilizer is provided in the stabilizer. In the power transmission device attached to the support shaft so as to be relatively movable by sandwiching the support shaft from both sides by a pair of sandwiched walls, an annular recess is provided at a position corresponding to the center of the stabilizer of the support shaft. The convex part provided in the central part in the longitudinal direction of the wall and the sandwiching wall facing part of the annular concave part fit together And by, and it is characterized in that the movement of the support shaft axis direction of the stabilizer is prevented.
動力伝達装置は、チェーン式（巻き掛け伝動部材がチェーン）とされることがあり、ベルト式（巻き掛け伝動部材がベルト）とされることがある。 The power transmission device may be a chain type (the winding transmission member is a chain), and may be a belt type (the winding transmission member is a belt).
この動力伝達装置は、自動車等の車両の無段変速機としての使用に好適なものとなる。このような無段変速機では、両シーブのシーブ面間に巻き掛け伝動部材を挟持し、可動シーブを油圧アクチュエータによって移動させることにより、無段変速機のシーブ面間距離したがって巻き掛け伝動部材の巻き掛け半径が変化するものとされる。 This power transmission device is suitable for use as a continuously variable transmission for a vehicle such as an automobile. In such a continuously variable transmission, a winding transmission member is sandwiched between the sheave surfaces of both sheaves, and the movable sheave is moved by a hydraulic actuator, so that the distance between the sheave surfaces of the continuously variable transmission and hence the winding transmission member of the continuously variable transmission is reduced. The winding radius is assumed to change.
スタビライザは、例えば、断面方形状とされ、これを構成する２部品（第１の半部および第２の半部）によって巻き掛け伝動部材を両側から挟むとともに、１対の挟持壁を介して支持軸に取り付けられる。巻き掛け伝動部材は、スタビライザに案内されて移動し、これにより、弦振動が低減される。 The stabilizer has, for example, a rectangular cross section, and sandwiches the power transmission member from both sides by two parts (the first half and the second half) constituting the stabilizer, and is supported through a pair of clamping walls. Mounted on the shaft. The winding transmission member moves while being guided by the stabilizer, thereby reducing the string vibration.
動力伝達装置では、低速走行時に対応する変速比が最大のアンダードライブ（以下、「Ｕ／Ｄ」と称す。）と、高速走行時に対応する変速比が最小のオーバードライブ（以下、「Ｏ／Ｄ」と称す。）との間で変速比が変化する。Ｕ／Ｄ状態では、プライマリプーリ側の巻き掛け径が最小で、セカンダリプーリ側の巻き掛け径が最大となっており、Ｏ／Ｄ状態では、その逆になっている。 In the power transmission device, the underdrive (hereinafter referred to as “U / D”) having the maximum speed ratio corresponding to low speed traveling and the overdrive (hereinafter referred to as “O / D”) corresponding to the minimum speed ratio corresponding to high speed traveling. ").) The gear ratio changes. In the U / D state, the winding diameter on the primary pulley side is the smallest and the winding diameter on the secondary pulley side is the maximum, and in the O / D state, the opposite is true.
動力伝達装置がＵ／Ｄ状態とＯ／Ｄ状態との間で変化する際、スタビライザは、巻き掛け伝動部材の形状の変化に応じて移動する必要があり、このため、ケーシングに固定された支持軸に対してスタビライザが移動可能（少なくともスタビライザが支持軸の軸線回りに回転可能）な構成とされる。ここで、スタビライザの支持軸軸方向へのずれは規制する必要があり、この規制手段としては、他の部材と干渉しないことおよび振動が大きくなった場合でも確実にずれを防止することが求められる。 When the power transmission device changes between the U / D state and the O / D state, the stabilizer needs to move in accordance with the change in the shape of the winding transmission member, and therefore, the support fixed to the casing. The stabilizer is movable with respect to the shaft (at least the stabilizer can rotate about the axis of the support shaft). Here, it is necessary to regulate the deviation of the stabilizer in the axial direction of the support shaft. As the regulating means, it is required not to interfere with other members and to reliably prevent the deviation even when the vibration becomes large. .
スタビライザの支持軸軸方向へのずれを規制するには、例えば、支持軸にスタビライザの挟持壁を挟む１対の環状凸部を設けることが考えられるが、スタビライザは、移動に伴ってプーリと干渉する可能性があることから、その支持軸軸方向の長さが十分に取れないという制限がある。 In order to restrict the shift of the stabilizer in the direction of the support shaft, for example, it is conceivable to provide a pair of annular projections on the support shaft that sandwich the holding wall of the stabilizer. However, the stabilizer interferes with the pulley as it moves. Therefore, there is a limitation that the length in the direction of the support shaft cannot be taken sufficiently.
そこで、第１の発明による動力伝達装置では、支持軸のスタビライザ中央に相当する位置に環状凸部が設けられ、スタビライザの挟持壁の長さ方向中央部に設けられた凹部と環状凸部の挟持壁対向部分とが嵌まり合うことによって、スタビライザの支持軸軸方向の移動が阻止されているものとされる。また、第２の発明による動力伝達装置では、支持軸のスタビライザ中央に相当する位置に環状凹部が設けられ、スタビライザの挟持壁の長さ方向中央部に設けられた凸部と環状凹部の挟持壁対向部分とが嵌まり合うことによって、スタビライザの支持軸軸方向の移動が阻止されているものとされる。いずれのものでも、１対の挟持壁に、プーリとの干渉防止用の切除部が設けられており、挟持壁の高さは、両端部が中央部よりも低くなされていることが好ましい。 Therefore, in the power transmission device according to the first aspect of the invention, an annular convex portion is provided at a position corresponding to the center of the stabilizer of the support shaft, and the concave portion provided in the central portion in the longitudinal direction of the sandwiching wall of the stabilizer and the annular convex portion is sandwiched. It is assumed that the movement of the stabilizer in the axial direction of the support shaft is prevented by fitting the wall facing portion. In the power transmission device according to the second invention, the annular recess is provided at a position corresponding to the center of the stabilizer of the support shaft, and the projection provided at the center in the longitudinal direction of the sandwiching wall of the stabilizer and the sandwiching wall of the annular recess It is assumed that the movement of the stabilizer in the direction of the support shaft is prevented by fitting the opposing portion. In any case, it is preferable that a pair of sandwiching walls is provided with a cut-out portion for preventing interference with the pulley, and the height of the sandwiching wall is lower at both ends than at the center.
第１および第２の発明の動力伝達装置によると、１対の環状凸部によってスタビライザの挟持壁を挟むものに比べて、支持軸軸方向のずれを規制する構成の支持軸軸方向の長さを短くすることができ、プーリとの干渉防止の点から有利になる。挟持壁の両端部がプーリと干渉しやすい箇所となっているので、挟持壁の高さは、両端部が中央部よりも低くなされていることが好ましい。 According to the power transmission devices of the first and second inventions, the length in the direction of the support shaft is configured to restrict the shift in the direction of the support shaft compared to a pair of annular convex portions sandwiching the holding wall of the stabilizer. This is advantageous from the viewpoint of preventing interference with the pulley. Since both ends of the sandwiching wall are likely to interfere with the pulley, it is preferable that the height of the sandwiching wall is lower at the both ends than at the center.
スタビライザは、合成樹脂製とされることが好ましく、この場合、挟持壁の内面を保護するために、挟持壁間に断面Ｕ字状の金属製補強材が配置されていることが好ましい。 The stabilizer is preferably made of a synthetic resin. In this case, in order to protect the inner surface of the sandwiching wall, it is preferable that a metal reinforcing material having a U-shaped cross section is disposed between the sandwiching walls.
１対の環状凸部によってスタビライザの挟持壁を挟むものにおいて、プーリとの干渉防止用の切除部が設けられて、挟持壁の両端部の高さが低くなされると、（挟持壁の端部の高さ位置−環状凸部の挟持壁対向部分の先端位置）が小さくなるために、振動が大きくなったときに、スタビライザの挟持壁の端部が環状凸部に乗り上げる可能性が大きくなるという問題がある。 In the case where the stabilizer holding wall is sandwiched by a pair of annular projections, when a cut-out portion for preventing interference with the pulley is provided and the height of both ends of the holding wall is lowered, the end of the holding wall The height position of the ring-shaped convex portion—the tip position of the annular convex portion facing the sandwiching wall) is small, and when the vibration becomes large, the possibility that the end portion of the stabilizer sandwiching wall rides on the annular convex portion is increased. There's a problem.
これに対し、第１の発明の動力伝達装置では、スタビライザが振動した場合に環状凸部の挟持壁対向部分と挟持壁の凹部とが外れるのは、振動量が（挟持壁の中央部の高さ位置−環状凸部の挟持壁対向部分の先端位置）を超えたときであり、他の部材との干渉を考慮した場合、挟持壁の中央部の高さは挟持壁の端部の高さに比べて大きくとることができるので、スタビライザの挟持壁をその両端側から１対の環状凸部で挟むものに比べて、スタビライザが支持軸から外れにくいものとなり、振動が大きくなった場合でも、スタビライザの支持軸軸方向へのずれを確実に防止することができる。また、第２の発明の動力伝達装置では、スタビライザが振動した場合に環状凹部の挟持壁対向部分と挟持壁の凸部とが外れるのは、振動量が（挟持壁の中央部の高さ位置−支持軸の挟持壁対向部分の外周位置）を超えたときであり、他の部材との干渉を考慮した場合、挟持壁の中央部の高さは挟持壁の端部の高さに比べて大きくとることができるので、スタビライザの挟持壁をその両端側から１対の環状凸部で挟むものに比べて、スタビライザが支持軸から外れにくいものとなり、振動が大きくなった場合でも、スタビライザの支持軸軸方向へのずれを確実に防止することができる。 On the other hand, in the power transmission device according to the first aspect of the invention, when the stabilizer vibrates, the sandwiching wall facing portion of the annular convex portion and the concave portion of the sandwiching wall come off because of the vibration amount (high in the central portion of the sandwiching wall). The height of the central portion of the sandwiching wall is the height of the end of the sandwiching wall when interference with other members is taken into consideration. Compared to the case where the stabilizer holding wall is sandwiched between a pair of annular projections from both ends thereof, the stabilizer is less likely to come off the support shaft, and even if the vibration increases, The stabilizer can be reliably prevented from shifting in the direction of the support shaft. In the power transmission device according to the second aspect of the present invention, when the stabilizer vibrates, the sandwiching wall facing portion of the annular recess and the projecting portion of the sandwiching wall are separated from each other because the amount of vibration is (the height position of the center portion of the sandwiching wall). -The outer peripheral position of the holding wall facing portion of the support shaft), and when considering interference with other members, the height of the central portion of the holding wall is higher than the height of the end portion of the holding wall Because it can be made larger, the stabilizer is less likely to come off the support shaft than the one that sandwiches the stabilizer clamping wall from both ends of the stabilizer, and the stabilizer can be supported even when vibration increases. A shift in the axial direction can be reliably prevented.
第１の発明の動力伝達装置によると、支持軸のスタビライザ中央に相当する位置に環状凸部が設けられ、スタビライザの挟持壁の長さ方向中央部に設けられた凹部と環状凸部の挟持壁対向部分とが嵌まり合うことによって、スタビライザの支持軸軸方向の移動が阻止されているので、支持軸軸方向のずれを規制する構成の支持軸軸方向の長さを短くすることができ、プーリとの干渉防止の点から有利になるとともに、（挟持壁の中央部の高さ位置−環状凸部の挟持壁対向部分の先端位置）が大きく取れるので、振動が大きくなった場合でも、スタビライザの支持軸軸方向へのずれを確実に防止することができる。 According to the power transmission device of the first invention, the annular convex portion is provided at a position corresponding to the center of the stabilizer of the support shaft, and the concave portion provided at the central portion in the longitudinal direction of the sandwiching wall of the stabilizer and the sandwiching wall of the annular convex portion Since the movement of the stabilizer in the support shaft axis direction is prevented by fitting the opposing portion, the length in the support shaft axis direction of the configuration that restricts the shift in the support shaft axis direction can be shortened, This is advantageous in terms of preventing interference with the pulley, and (the height position of the center portion of the sandwiching wall−the tip position of the annular projection facing the sandwiching wall portion) can be made large, so even if the vibration increases, the stabilizer Can be reliably prevented from shifting in the direction of the support shaft.
第２の発明の動力伝達装置によると、支持軸のスタビライザ中央に相当する位置に環状凹部が設けられ、スタビライザの挟持壁の長さ方向中央部に設けられた凸部と環状凹部の挟持壁対向部分とが嵌まり合うことによって、スタビライザの支持軸軸方向の移動が阻止されているので、支持軸軸方向のずれを規制する構成の支持軸軸方向の長さを短くすることができ、プーリとの干渉防止の点から有利になるとともに、（挟持壁の中央部の高さ位置−支持軸の挟持壁対向部分の外周位置）が大きく取れるので、振動が大きくなった場合でも、スタビライザの支持軸軸方向へのずれを確実に防止することができる。 According to the power transmission device of the second invention, the annular recess is provided at a position corresponding to the center of the stabilizer of the support shaft, and the projection provided at the center in the longitudinal direction of the sandwiching wall of the stabilizer is opposed to the sandwiching wall of the annular recess. Since the movement of the stabilizer in the direction of the support shaft is prevented by fitting the part, the length of the support shaft in the direction of the support shaft in the configuration that restricts the shift in the direction of the support shaft can be shortened, and the pulley This is advantageous from the viewpoint of preventing interference with the center, and (the height position of the center portion of the clamping wall−the outer peripheral position of the supporting shaft facing the clamping wall) can be made large, so even if the vibration becomes large, the stabilizer can be supported. A shift in the axial direction can be reliably prevented.
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。図１は、第１の発明および第２の発明に共通であり、図２および図３は、第１の発明の実施形態を示し、図４および図５は、第２の発明の実施形態を示し、図６および図７は、第１および第２の発明に対応する従来技術を示している。 Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is common to the first invention and the second invention, FIG. 2 and FIG. 3 show an embodiment of the first invention, and FIG. 4 and FIG. 5 show an embodiment of the second invention. 6 and 7 show the prior art corresponding to the first and second inventions.
この発明による動力伝達装置(1)は、図１に示すように、固定シーブおよび可動シーブからなるプライマリプーリ(2)と、固定シーブおよび可動シーブからなるセカンダリプーリ(3)と、両プーリ(2)(3)間に巻き掛けられ巻き掛け伝動部材(4)と、これらを収容するケーシング(5)と、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）が相対移動可能に挿通されることで巻き掛け伝動部材(4)の動きを規制するスタビライザ(6)と、スタビライザ(6)を支持する支持軸(7)とを備えている。 As shown in FIG. 1, a power transmission device (1) according to the present invention comprises a primary pulley (2) composed of a fixed sheave and a movable sheave, a secondary pulley (3) composed of a fixed sheave and a movable sheave, and both pulleys (2 ) (3) is wound between the winding transmission member (4), the casing (5) for accommodating these, and the string portion of the winding transmission member (4) (restricted by the pulley (2) (3)) And a stabilizer (6) for restricting the movement of the winding transmission member (4) by being inserted so as to be relatively movable, and a support shaft (7) for supporting the stabilizer (6).
動力伝達装置(1)では、低速走行時に対応する変速比が最大のアンダードライブ（以下、「Ｕ／Ｄ」と称す。）と、高速走行時に対応する変速比が最小のオーバードライブ（以下、「Ｏ／Ｄ」と称す。）との間で変速比が変化する。Ｕ／Ｄ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おり、Ｏ／Ｄ状態（図１に実線で示す）では、その逆になっている。 In the power transmission device (1), the underdrive (hereinafter referred to as “U / D”) corresponding to the maximum speed ratio corresponding to low speed driving and the overdrive (hereinafter referred to as “U / D”) corresponding to the maximum speed ratio during high speed driving. O / D "))). In the U / D state (indicated by a two-dot chain line in FIG. 1), the winding diameter on the primary pulley (2) side is the smallest, and the winding diameter on the secondary pulley (3) side is the largest. In the state (shown by the solid line in FIG. 1), the reverse is true.
スタビライザ(6)は、合成樹脂製で２つ割り形状とされており、両プーリ(2)(3)間に巻き掛けられた後の巻き掛け伝動部材(4)を両側から挟んで突き合わされることで巻き掛け伝動部材(4)に取り付けられている。スタビライザ(6)の中央部の断面は、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)の弦部がスタビライザ(6)に相対移動可能に挿通されており、巻き掛け伝動部材(4)の弦部の進行方向と直交する方向の動きがスタビライザ(6)によって規制されている。 The stabilizer (6) is made of a synthetic resin and has a split shape. The stabilizer (6) is sandwiched between both pulleys (2) and (3) with the wound transmission member (4) sandwiched from both sides. This is attached to the winding transmission member (4). The cross section of the central portion of the stabilizer (6) is formed in a square 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 stabilizer (6) so as to be relatively movable, and the movement in the direction orthogonal to the traveling direction of the string portion of the winding transmission member (4) is stabilized ( It is regulated by 6).
スタビライザ(6)は、合成樹脂製で、本体(11)と、本体(11)に一体に設けられて支持軸(7)を両側から挟む１対の挟持壁(12)とを有している。 The stabilizer (6) is made of synthetic resin, and has a main body (11) and a pair of clamping walls (12) that are provided integrally with the main body (11) and sandwich the support shaft (7) from both sides. .
支持軸(7)は、ケーシング(5)に固定され、スタビライザ(6)は、支持軸(7)の軸線回りに回転可能となっている。したがって、巻き掛け伝動部材(4)がＵ／Ｄ状態からＯ／Ｄ状態へと変化する場合には、図１に二点鎖線および実線で示しているように、巻き掛け伝動部材(4)の形状の変化にしたがってスタビライザ(6)がその傾斜角度を変化させる。 The support shaft (7) is fixed to the casing (5), and the stabilizer (6) is rotatable about the axis of the support shaft (7). Therefore, when the winding transmission member (4) changes from the U / D state to the O / D state, the winding transmission member (4) of the winding transmission member (4) as shown by the two-dot chain line and the solid line in FIG. The stabilizer (6) changes the inclination angle according to the change of the shape.
動力伝達装置がＵ／Ｄ状態とＯ／Ｄ状態との間で変化する際、スタビライザ(6)は、巻き掛け伝動部材の形状の変化に応じて移動する必要があり、このため、スタビライザ(6)が支持軸(7)の軸線回りに回転可能なように支持軸(7)に支持され、支持軸(7)に対してスタビライザ(6)が移動することもある程度許容されている。したがって、スタビライザ(6)を合成樹脂製とすると、スタビライザ(6)が摩耗することで、ガタが生じる可能性がある。そこで、スタビライザ(6)の１対の挟持壁(12)の内面を保護するために、スタビライザ(6)の１対の挟持壁(12)間に断面Ｕ字状の金属製補強材(13)が配置されている。 When the power transmission device changes between the U / D state and the O / D state, the stabilizer (6) needs to move in accordance with the change in the shape of the winding transmission member. Therefore, the stabilizer (6 ) Is supported by the support shaft (7) so as to be rotatable about the axis of the support shaft (7), and the stabilizer (6) is allowed to move to some extent relative to the support shaft (7). Therefore, if the stabilizer (6) is made of a synthetic resin, the stabilizer (6) may be worn and play may occur. Therefore, in order to protect the inner surface of the pair of sandwiching walls (12) of the stabilizer (6), a metal reinforcing material (13) having a U-shaped cross section between the pair of sandwiching walls (12) of the stabilizer (6). Is arranged.
スタビライザ(6)は、その移動に伴って他の部材（例えばプーリ(2)(3)）と干渉する可能性があることから、１対の挟持壁(12)の両端部には、両端部の高さを低くする干渉防止用の切除部(14)が設けられている。切除部(14)の下面(14a)は、図７に示すように、干渉する可能性があるプーリ(2)(3)形状に対応して、傾斜状に形成されている。 Since the stabilizer (6) may interfere with other members (for example, the pulleys (2) and (3)) along with its movement, both ends of the pair of holding walls (12) A cut-out portion (14) for preventing interference is provided to reduce the height of the interference. As shown in FIG. 7, the lower surface (14a) of the cut portion (14) is formed in an inclined shape corresponding to the shape of the pulleys (2) and (3) that may interfere with each other.
スタビライザ(6)の支持軸軸方向の移動は、防止する必要があり、図６および図７に示す従来のものでは、スタビライザ(6)の１対の挟持壁(12)が支持軸(7)に設けられた１対の環状凸部(51)によって挟まれることで防止されていた。この場合、上記の干渉防止用の切除部(14)の存在により、環状凸部(51)に当接する挟持壁(12)端部の高さＨ２が挟持壁(12)の高さＨ１に比べて低くなっているので、（挟持壁(12)の端部の高さ位置Ｈ２−環状凸部(51)の挟持壁対向部分の先端位置Ｂ１）が相対的に小さく、スタビライザ(6)が振動して、スタビライザ(6)に対する支持軸(7)の相対位置が図６および図７に二点鎖線で示す位置に達すると、挟持壁(12)の端部が環状の凸部(51)を乗り越えて、スタビライザ(6)の支持軸軸方向のずれが発生するという問題がある。 It is necessary to prevent the stabilizer (6) from moving in the direction of the support shaft. In the conventional apparatus shown in FIGS. 6 and 7, a pair of clamping walls (12) of the stabilizer (6) is supported by the support shaft (7). It was prevented by being pinched | interposed by a pair of annular convex part (51) provided in this. In this case, the height H2 of the end portion of the clamping wall (12) that contacts the annular convex portion (51) is higher than the height H1 of the clamping wall (12) due to the presence of the cut portion (14) for preventing interference. (The height position H2 of the end portion of the sandwiching wall (12)-the tip position B1 of the portion facing the sandwiching wall of the annular convex portion (51)) is relatively small, and the stabilizer (6) vibrates. Then, when the relative position of the support shaft (7) with respect to the stabilizer (6) reaches the position indicated by the two-dot chain line in FIGS. 6 and 7, the end of the sandwiching wall (12) becomes the annular convex portion (51). There is a problem that the stabilizer (6) shifts in the direction of the support shaft when it gets over.
そこで、図２に示す実施形態では、支持軸(7)のスタビライザ中央に相当する位置に、環状の凸部(21)が一体に設けられ、スタビライザ(6)に、環状の凸部(21)と嵌まり合う凹部(22)が設けられている。ここで、スタビライザ(6)は第１の半部(6a)と第２の半部(6b)とが突き合わされて形成されており、凹部(22)は、第１の半部(6a)の挟持壁(12a)と第２の半部(6b)の挟持壁(12b)とが所定間隔をおいて対向することで形成されている。このようにすると、（挟持壁(12)の中央部の高さ位置Ｈ１−環状凸部(21)の挟持壁対向部分の先端位置Ｂ１）が図６に示す従来の構成における（挟持壁(12)の端部の高さ位置Ｈ２−環状凸部(51)の挟持壁対向部分の先端位置Ｂ１）に比べて大きく取れるので、図３に示すように、スタビライザ(6)が振動して、スタビライザ(6)に対する支持軸(7)の相対位置が変化して、挟持壁(12)の端部の高さ位置Ｈ２が環状凸部(21)の挟持壁対向部分の先端位置Ｂ１よりも下方（外れる位置）にある場合でも、挟持壁(12)の中央部の高さＨ１の部分が環状凸部(21)を乗り越えることはなく、スタビライザ(6)の支持軸軸方向のずれが発生するという問題が解消する。 Therefore, in the embodiment shown in FIG. 2, the annular protrusion (21) is integrally provided at a position corresponding to the center of the stabilizer of the support shaft (7), and the annular protrusion (21) is provided on the stabilizer (6). A recess (22) that fits in is provided. Here, the stabilizer (6) is formed by abutting the first half (6a) and the second half (6b), and the recess (22) is formed on the first half (6a). The sandwiching wall (12a) and the sandwiching wall (12b) of the second half (6b) are opposed to each other with a predetermined distance therebetween. In this way, (the height position H1 of the center portion of the sandwiching wall (12) 1-the tip position B1 of the portion facing the sandwiching wall of the annular convex portion (21)) is (the sandwiching wall (12 ), The height position H2 of the end portion of the ring-shaped convex portion (51) is larger than the tip end position B1), so that the stabilizer (6) vibrates as shown in FIG. The relative position of the support shaft (7) with respect to (6) changes, and the height position H2 of the end portion of the holding wall (12) is lower than the tip position B1 of the holding wall facing portion of the annular convex portion (21) ( Even if it is in the position where it detaches, the height H1 portion of the central portion of the clamping wall (12) does not get over the annular convex portion (21), and the shift of the stabilizer (6) in the axial direction of the support shaft occurs. The problem is solved.
また、図４および図５に示す第２の発明の実施形態では、支持軸(7)のスタビライザ中央に相当する位置に、環状の凹部(23)が設けられ、スタビライザ(6)の挟持壁(12)の長さ方向中央部に、環状の凹部(23)と嵌まり合う凸部(24)が設けられている。ここで、凸部(24)は、補強材(13)の突き合わせ部分が厚肉とされることで形成されている。このようにすると、スタビライザ(6)が振動して、スタビライザ(6)に対する支持軸(7)の相対位置が図４および図５に二点鎖線で示す位置に達した場合に、（挟持壁(12)の中央部における補強部(13)の高さ位置Ｈ３−支持軸(7)の外周位置Ｂ２）が従来の構成における（挟持壁(12)の端部の高さ位置Ｈ２−環状凸部(51)の挟持壁対向部分の先端位置Ｂ１）に比べて大きく取れるので、補強材(13)の高さＨ３の部分が環状の凹部(23)から外れることはなく、スタビライザ(6)の支持軸軸方向のずれが発生するという問題が解消する。
In the embodiment of the second invention shown in FIG. 4 and FIG. 5, an annular recess (23) is provided at a position corresponding to the center of the stabilizer of the support shaft (7), and the sandwiching wall ( A convex part (24) that fits into the annular concave part (23) is provided at the center in the length direction of 12). Here, the convex portion (24) is formed by making the butted portion of the reinforcing material (13) thick. In this way, when the stabilizer (6) vibrates and the relative position of the support shaft (7) with respect to the stabilizer (6) reaches the position shown by the two-dot chain line in FIGS. 12) The height position H3 of the reinforcing
上記の第２の発明の実施形態において、補強材(13)は、省略することができ、この場合には、凸部(24)は、挟持壁(12)の突き合わせ部分が厚肉とされることで形成される。補強材(13)を設ける場合、補強材(13)の高さＨ３は、挟持壁(12)の高さＨ１と同じにする必要はなく、挟持壁(12)の高さより低くてもよい。 In the embodiment of the second invention described above, the reinforcing material (13) can be omitted, and in this case, the projecting portion (24) is thickened at the butted portion of the clamping wall (12). Is formed. When the reinforcing material (13) is provided, the height H3 of the reinforcing material (13) does not have to be the same as the height H1 of the holding wall (12), and may be lower than the height of the holding wall (12).
上記動力伝達装置(1)によると、巻き掛け伝動部材(4)の弦部の進行方向と直交する方向の動きがスタビライザ(6)によって規制されているので、弦振動が低減される。そして、図２および図３に示した実施形態では、（挟持壁(12)の中央部の高さ位置−環状凸部(21)の挟持壁対向部分の先端位置）が大きく取れるので、また、図４および図５に示した実施形態では、（挟持壁(12)の中央部の高さ位置−支持軸(7)の挟持壁対向部分の外周位置）が大きく取れるので、振動が大きくなった場合でも、スタビライザの支持軸軸方向へのずれを確実に防止することができる。 According to the power transmission device (1), since the movement in the direction orthogonal to the traveling direction of the string portion of the winding transmission member (4) is regulated by the stabilizer (6), string vibration is reduced. And in embodiment shown in FIG.2 and FIG.3, since it can take large (the height position of the center part of the clamping wall (12)-the front-end | tip position of the clamping wall opposing part of an annular convex part (21)), In the embodiment shown in FIG. 4 and FIG. 5, (the height position of the center portion of the sandwiching wall (12) −the outer peripheral position of the sandwiching wall facing portion of the support shaft (7)) can be increased, so that the vibration is increased. Even in this case, the stabilizer can be reliably prevented from shifting in the direction of the support shaft.
なお、図１において、スタビライザ(6)は、図の下側（プライマリプーリ(2)からセカンダリプーリ(3)に至る部分）に設けられているが、図の上側（セカンダリプーリ(3)からプライマリプーリ(2)に至る部分）に設けるようにしてもよく、上下両側に設けるようにしてもよい。 In FIG. 1, the stabilizer (6) is provided on the lower side (portion from the primary pulley (2) to the secondary pulley (3)), but the upper side (secondary pulley (3) to the primary pulley (3). It may be provided on the pulley (2), or on both the upper and lower sides.
(1) 動力伝達装置
(2)(3) プーリ
(4) 動巻き掛け伝動部材
(5) ケーシング
(6) スタビライザ
(7) 支持軸
(11) 本体
(12) 挟持壁
(14) 切除部
(21) 環状の凸部
(22) 凹部
(23) 環状の凹部
(24) 凸部
(1) Power transmission device
(2) (3) Pulley
(4) Dynamic winding transmission member
(5) Casing
(6) Stabilizer
(7) Support shaft
(11) Body
(12) Retaining wall
(14) Resection
(21) An annular projection
(22) Recess
(23) Annular recess
(24) Convex
Claims (3)
支持軸のスタビライザ中央に相当する位置に環状凸部が設けられ、スタビライザの挟持壁の長さ方向中央部に設けられた凹部と環状凸部の挟持壁対向部分とが嵌まり合うことによって、スタビライザの支持軸軸方向の移動が阻止されていることを特徴とする動力伝達装置。 A primary pulley composed of a fixed sheave and a movable sheave, a secondary pulley composed of a fixed sheave and a movable sheave, a winding transmission member wound between both pulleys, a casing for accommodating these, and a string portion of the winding transmission member Is provided with a stabilizer that restricts the movement of the winding transmission member by being inserted so as to be relatively movable, and a support shaft that supports the stabilizer, and the stabilizer is supported by a pair of clamping walls provided in the stabilizer. In the power transmission device attached to the support shaft so as to be relatively movable so as to sandwich the
An annular convex portion is provided at a position corresponding to the center of the stabilizer of the support shaft, and the concave portion provided in the center portion in the longitudinal direction of the sandwiching wall of the stabilizer and the sandwiching wall facing portion of the annular convex portion are fitted together, thereby stabilizing the stabilizer. The power transmission device is characterized in that movement in the axial direction of the support shaft is prevented.
支持軸のスタビライザ中央に相当する位置に環状凹部が設けられ、スタビライザの挟持壁の長さ方向中央部に設けられた凸部と環状凹部の挟持壁対向部分とが嵌まり合うことによって、スタビライザの支持軸軸方向の移動が阻止されていることを特徴とする動力伝達装置。 A primary pulley composed of a fixed sheave and a movable sheave, a secondary pulley composed of a fixed sheave and a movable sheave, a winding transmission member wound between both pulleys, a casing for accommodating these, and a string portion of the winding transmission member Is provided with a stabilizer that restricts the movement of the winding transmission member by being inserted so as to be relatively movable, and a support shaft that supports the stabilizer, and the stabilizer is supported by a pair of clamping walls provided in the stabilizer. In the power transmission device attached to the support shaft so as to be relatively movable so as to sandwich the
An annular recess is provided at a position corresponding to the center of the stabilizer of the support shaft, and the convex portion provided at the center in the longitudinal direction of the sandwiching wall of the stabilizer and the sandwiching wall facing portion of the annular recess are fitted to each other. A power transmission device characterized in that the movement in the axial direction of the support shaft is prevented.
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| JP2010254548A JP5521987B2 (en) | 2010-11-15 | 2010-11-15 | Power transmission device |
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| US9458916B2 (en) | 2014-08-08 | 2016-10-04 | Gm Global Technology Operations, Llc | Guide pin assembly |
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