JP3453464B2 - Belt type continuously variable transmission - Google Patents
Belt type continuously variable transmissionInfo
- Publication number
- JP3453464B2 JP3453464B2 JP26249295A JP26249295A JP3453464B2 JP 3453464 B2 JP3453464 B2 JP 3453464B2 JP 26249295 A JP26249295 A JP 26249295A JP 26249295 A JP26249295 A JP 26249295A JP 3453464 B2 JP3453464 B2 JP 3453464B2
- Authority
- JP
- Japan
- Prior art keywords
- shaft
- input shaft
- continuously variable
- variable transmission
- variable
- Prior art date
- Legal status (The legal status 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 status listed.)
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Description
【０００１】[0001]
【発明の属する技術分野】本発明は、２個の可変プーリ
間に無端ベルトをかけわたし、可変プーリに接する無端
ベルトの半径位置に応じて両可変プーリ軸間の回転速度
を無段階に変化させるベルト式無段変速機に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention applies an endless belt between two variable pulleys and continuously changes the rotational speed between the variable pulley shafts according to the radial position of the endless belt contacting the variable pulleys. The present invention relates to a belt type continuously variable transmission.
【０００２】[0002]
【従来の技術】従来の車両用ベルト式無段変速機は、特
開平１−２８３４６１号公報に例示されているように、
原動機からトルクコンバータ及び遊星歯車装置を経て入
力軸と同軸である一方の可変プーリに回転力が伝えら
れ、その可変プーリと下方に配置された他方の可変プー
リとの間に無端ベルトがかけわたされて、各可変プーリ
に接する無端ベルトの半径位置に応じて両可変プーリ軸
間の回転速度を無段階に変化させるように構成されてい
るが、この場合、上方の可変プーリ軸から下方の可変プ
ーリ側へは、少なくとも両可変プーリ軸間距離に可変プ
ーリの半径を加えた長さの空間が必要であるので、両可
変プーリを収容するハウジングの外径をそれだけ大きく
しなければならず、ベルト式無段変速機の地上高を十分
に確保する必要上、車両に対するベルト式無段変速機の
搭載が容易でない等の不具合があった。2. Description of the Related Art A conventional vehicle belt type continuously variable transmission is disclosed in Japanese Patent Application Laid-Open No. 1-283461.
The torque is transmitted from the prime mover to the one variable pulley coaxial with the input shaft through the torque converter and the planetary gear device, and the endless belt is hung between the variable pulley and the other variable pulley arranged below. In this case, the rotational speed between the variable pulley shafts is continuously changed according to the radial position of the endless belt in contact with each variable pulley. On the side, a space of at least the distance between the two variable pulley shafts plus the radius of the variable pulley is required.Therefore, the outer diameter of the housing that accommodates both variable pulleys must be increased accordingly. Since it is necessary to secure a sufficient ground clearance of the continuously variable transmission, there is a problem that it is not easy to mount the belt type continuously variable transmission on the vehicle.
【０００３】また、変速機の制御用及び潤滑用の油圧源
となるオイルポンプは、エンジンの作動中常にエンジン
側から駆動する必要があるが、上記従来装置のようにエ
ンジン側からトルクコンバータ及び遊星歯車装置を経て
同軸上の可変プーリに回転力が伝達されるものにおいて
は、その構造上トルクコンバータと遊星歯車装置との間
にオイルポンプを配置せざるを得ず、このため、入力軸
側の全長が大きくなって、変速機が大型化する傾向があ
った。The oil pump, which serves as a hydraulic power source for controlling the transmission and for lubrication, must always be driven from the engine side during operation of the engine. In the case where the rotational force is transmitted to the coaxial variable pulley via the gear device, an oil pump has to be arranged between the torque converter and the planetary gear device because of its structure, and therefore, the input shaft side The total length tends to be large, and the transmission tends to be large.
【０００４】[0004]
【発明が解決しようとする課題】本発明は、ベルト式無
段変速機の構成をコンパクトにして、とくに車両への搭
載性が良好となるようにしようとするものである。SUMMARY OF THE INVENTION An object of the present invention is to make the structure of a belt type continuously variable transmission compact so that it can be easily mounted on a vehicle.
【０００５】[0005]
【課題を解決するための手段】この目的を達成するた
め、本発明にかかるベルト式無段変速機は、中空の入力
軸、同入力軸と上下方向に間隔をおいて平行に配置され
歯車列により上記入力軸と連動する第２軸、上記入力軸
と上下方向に間隔をおいて平行に配置された第３軸、上
記第２軸に取り付けられた可変駆動プーリと上記第３軸
に取り付けられた可変従動プーリと上記両可変プーリ間
にかけわたされた無端ベルトとからなる無段変速機構、
エンジン側に連結されて上記入力軸内を回動自在に挿通
する駆動軸、及び、上記入力軸内から突出する上記駆動
軸の先端部に配置されたオイルポンプを有し、上記第２
軸及び上記第３軸が上記入力軸を通る平面に対してほぼ
対称に配置され、上記オイルポンプが上記無段変速機構
と干渉することなく上記駆動軸の軸方向と垂直で上記無
段変速機構を通る面内に設置されている。Means for Solving the Problems] To achieve this object, a belt type continuously variable transmission according to the present invention includes a hollow input shaft, it is disposed on a flat row at intervals in the vertical direction as the input shaft gear A second axis that interlocks with the input shaft depending on the row, the input shaft
Passed a vertical third axis direction is arranged on a flat row spaced, sieved between said variable driven pulley and the both variable pulleys mounted on the variable drive pulley and the third shaft which is mounted on the second shaft Continuously variable transmission consisting of an endless belt,
A drive shaft connected to the engine side is inserted rotatably within the input shaft, and has an oil pump disposed at the distal end of the drive shaft projecting from the said input shaft, said second
The axis and the third axis with respect to a plane passing through the input axis
The oil pumps are arranged symmetrically, and are installed in a plane that passes through the continuously variable transmission mechanism perpendicular to the axial direction of the drive shaft without interfering with the continuously variable transmission mechanism.
【０００６】この場合、可変駆動プーリが取り付けられ
た第２軸及び可変従動プーリが取り付けられた第３軸
が、入力軸とそれぞれ上下方向に間隔をおいて平行に配
置されていて、入力軸と第２軸及び第３軸のいずれもが
同軸上に配置されておらず、しかも、第２軸及び第３軸
が入力軸を通る平面に対してほぼ対称に配置されている
ため、両可変プーリの各直径及び両可変プーリ軸間距離
が全く同じであっても、入力軸をふくめた変速機構全体
を容易に小型化することができ、また、エンジン側に連
結された駆動軸が入力軸内を回動自在に挿通していると
共に、入力軸内から突出する駆動軸の先端部にオイルポ
ンプが配置され、かつ、オイルポンプが無段変速機構と
干渉することなく駆動軸の軸方向と垂直で無段変速機構
を通る面内に設置されていて、オイルポンプをトルクコ
ンバータと遊星歯車機構との間等に配置する必要がない
ので、ベルト式無段変速機をコンパクトに構成すること
が可能となる。[0006] In this case, the third axis the second axis and the variable driven pulley variable drive pulley is attached is attached, located on the flat row at intervals each with an input shaft in the vertical direction, the input shaft Neither the second shaft and the third shaft are coaxially arranged , and the second shaft and the third shaft
Are arranged almost symmetrically with respect to the plane passing through the input axis
Therefore, even in the diameter and both the variable pulley shaft distance between identical for both variable pulleys, the entire transmission mechanism including an input shaft can be easily miniaturized, also connected to the engine side drive The shaft is rotatably inserted in the input shaft, the oil pump is arranged at the tip of the drive shaft protruding from the input shaft, and the oil pump does not interfere with the continuously variable transmission mechanism. Since it is installed in a plane that is perpendicular to the axial direction of and through the continuously variable transmission and there is no need to arrange the oil pump between the torque converter and the planetary gear mechanism, the belt type continuously variable transmission can be made compact. It becomes possible to configure.
【０００７】[0007]
【発明の実施の形態】以下、本発明の各実施形態例につ
いて、同等部分にはそれぞれ同一符号を付けて説明す
る。図１及び図２において、車両のエンジン出力はトル
クコンバータ１またはロックアップクラッチ２を介し回
転力として中空の伝動軸３に伝達され、伝動軸３と同軸
上に中空の入力軸４が回転自在に配置されていて、伝動
軸３には遊星歯車機構５のサンギヤ６が設けられ、入力
軸４に遊星歯車機構５のプラネタリギヤ７が連結され
て、伝動軸３とプラネタリギヤ７との間に前進用湿式ク
ラッチ８が設置されると共に、遊星歯車機構５のリング
ギヤ９と変速ケーシング１０との間に後進用湿式ブレー
キ１１が設置されている。BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, each embodiment of the present invention will be described with the same reference numerals being given to the same parts. 1 and 2, the engine output of the vehicle is transmitted as a rotational force to the hollow transmission shaft 3 via the torque converter 1 or the lockup clutch 2, and the hollow input shaft 4 is rotatable coaxially with the transmission shaft 3. The transmission shaft 3 is provided with the sun gear 6 of the planetary gear mechanism 5, the planetary gear 7 of the planetary gear mechanism 5 is connected to the input shaft 4, and the wet type for forward movement is provided between the transmission shaft 3 and the planetary gear 7. The clutch 8 is installed, and the reverse wet brake 11 is installed between the ring gear 9 of the planetary gear mechanism 5 and the speed change casing 10.
【０００８】また、入力軸４の斜め上方に間隔をおいて
入力軸４と平行に第２軸１２が回転自在に配置され、入
力軸４の歯車１３と第２軸１２の歯車１４とがかみ合っ
ていると共に、第２軸１２に可変駆動プーリ１５が取り
付けられている。A second shaft 12 is rotatably arranged parallel to the input shaft 4 at a distance obliquely above the input shaft 4, and a gear 13 of the input shaft 4 and a gear 14 of the second shaft 12 mesh with each other. In addition, the variable drive pulley 15 is attached to the second shaft 12.
【０００９】一方、入力軸４を中心として第２軸１２の
対称位置に入力軸４と平行な第３軸１６が回転自在に配
置され、第３軸１６に可変従動プーリ１７が取り付けら
れていて、可変駆動プーリ１５と可変従動プーリ１７と
の間に無端ベルト１８がかけわたされ、周知のように可
変駆動プーリ１５、可変従動プーリ１７及び無端ベルト
１８により無段変速機構１９が形成され、可変駆動プー
リ１５及び可変従動プーリ１７に接する無端ベルト１８
の半径位置に応じ、可変駆動プーリ１５から可変従動プ
ーリ１７へ回転力が無段変速されて伝達される。On the other hand, a third shaft 16 parallel to the input shaft 4 is rotatably arranged at a symmetrical position of the second shaft 12 about the input shaft 4, and a variable driven pulley 17 is attached to the third shaft 16. An endless belt 18 is stretched between the variable drive pulley 15 and the variable driven pulley 17, and as is well known, a continuously variable transmission mechanism 19 is formed by the variable drive pulley 15, the variable driven pulley 17 and the endless belt 18, Endless belt 18 in contact with drive pulley 15 and variable driven pulley 17
In accordance with the radial position of, the rotational force is continuously stepped from the variable drive pulley 15 to the variable driven pulley 17 and transmitted.
【００１０】さらに、入力軸４と同軸上に出力軸２０が
回転自在に配置されていて、第３軸１６の歯車２１と出
力軸２０の歯車２２とがかみ合っている。他方、エンジ
ン側から延び出した駆動軸２３が中空伝動軸３及び中空
入力軸４内を回転自在に挿通し、入力軸４から変速ケー
シング１０内へ突出した駆動軸２３の先端部にオイルポ
ンプ２４が配置されている。Further, the output shaft 20 is rotatably arranged coaxially with the input shaft 4, and the gear 21 of the third shaft 16 and the gear 22 of the output shaft 20 mesh with each other. On the other hand, the drive shaft 23 extending from the engine side is rotatably inserted into the hollow transmission shaft 3 and the hollow input shaft 4, and the oil pump 24 is attached to the tip of the drive shaft 23 protruding from the input shaft 4 into the speed change casing 10. Are arranged.
【００１１】なお、変速ケーシング１０はクラッチ機構
としてのトルクコンバータ１、前後進切替え機構として
の遊星歯車機構５等、及び、主要な変速機構の無段変速
機構１９を収容しているが、トルクコンバータ１を収容
している部分を第１ケーシング部分１０１、遊星歯車機
構５等を収容している部分を第２ケーシング部分１０
２、無段変速機構１９を収容している部分を第３ケーシ
ング部分１０３とそれぞれ表すこととする。The speed change casing 10 houses a torque converter 1 as a clutch mechanism, a planetary gear mechanism 5 as a forward / reverse switching mechanism, and a continuously variable speed change mechanism 19 as a main speed change mechanism. 1 is accommodated in the first casing portion 101, and the planet gear mechanism 5 is accommodated in the second casing portion 10
2. The portion housing the continuously variable transmission mechanism 19 will be referred to as the third casing portion 103, respectively.
【００１２】上記装置において、トルクコンバータ１ま
たはロックアップクラッチ２を介して伝動軸３に伝達さ
れた回転力は、前進用湿式クラッチ８が接続されること
により入力軸４へそのまま伝えられ、歯車１３、１４に
より入力軸４から第２軸１２へ伝達された回転力は、無
段変速機構１９により変速されて第３軸１６へ伝えら
れ、歯車２１、２２により第３軸１６から出力軸２０へ
前進回転力として伝達される。In the above device, the rotational force transmitted to the transmission shaft 3 via the torque converter 1 or the lockup clutch 2 is directly transmitted to the input shaft 4 by connecting the forward wet clutch 8 to the gear 13 The rotational force transmitted from the input shaft 4 to the second shaft 12 by the gears 14, 14 is transmitted by the continuously variable transmission mechanism 19 to the third shaft 16, and is transmitted from the third shaft 16 to the output shaft 20 by the gears 21 and 22. It is transmitted as forward rotational force.
【００１３】また、トルクコンバータ１を介して伝動軸
３に伝達された回転力は、前進用湿式クラッチ８が遮断
されて後進用湿式ブレーキ１１が作動することにより、
逆転減速して入力軸４へ伝えられ、歯車１３、１４によ
り入力軸４から第２軸１２へ伝達された回転力は、無段
変速機構１９により変速されて第３軸１６へ伝えられ、
歯車２１、２２により第３軸１６から出力軸２０へ後進
回転力として伝達される。The torque transmitted to the transmission shaft 3 through the torque converter 1 is disengaged from the forward wet clutch 8 and the reverse wet brake 11 is operated,
The rotational force decelerated in the reverse direction is transmitted to the input shaft 4, and the rotational force transmitted from the input shaft 4 to the second shaft 12 by the gears 13 and 14 is transmitted by the continuously variable transmission mechanism 19 to the third shaft 16,
By the gears 21 and 22, the reverse rotational force is transmitted from the third shaft 16 to the output shaft 20.
【００１４】この場合、第２軸１２及び第３軸１６が入
力軸４を中心として対称位置である斜め上方にそれぞれ
配置されているので、第２軸１２及び第３軸１６にそれ
ぞれ可変駆動プーリ１５及び可変従動プーリ１７が取り
付けられたとき、入力軸４から各可変プーリ１５、１７
外周縁までの最大距離は、入力軸４から第２軸１２また
は第３軸１６までの距離に各可変プーリ１５、１７の半
径を加えた長さとなり、前記従来装置のように両可変プ
ーリ軸間距離に可変プーリの半径を加えた長さと比較す
ると、上記最大距離を容易に小さくしてコンパクトに構
成することができるので、無段変速機構１９を収容する
第３ケーシング１０３の外径は前記従来装置の場合より
も必然的に小さくすることが可能であって、車両への搭
載が比較的容易となる利点がある。In this case, since the second shaft 12 and the third shaft 16 are arranged diagonally above the input shaft 4, which is a symmetrical position, the variable drive pulleys are respectively arranged on the second shaft 12 and the third shaft 16. 15 and the variable driven pulley 17 are attached, the variable pulleys 15,
The maximum distance to the outer peripheral edge is the distance from the input shaft 4 to the second shaft 12 or the third shaft 16 plus the radius of each of the variable pulleys 15 and 17, which is the same as the conventional device. Compared with the length obtained by adding the radius of the variable pulley to the inter-distance, the maximum distance can be easily reduced to make a compact structure. Therefore, the outer diameter of the third casing 103 for housing the continuously variable transmission mechanism 19 is It is inevitably smaller than the case of the conventional device, and there is an advantage that mounting on a vehicle is relatively easy.
【００１５】また、変速ケーシング１０の下部に溜めら
れた油面に無段変速機構１９が浸されることは、両可変
プーリ１５、１７以外に無端ベルト１８が油面に無段変
速機構１９が浸されることとなり、両可変プーリ１５、
１７及び無端ベルト１８が油面を激しく攪拌して、両可
変プーリ１５、１７及び無端ベルト１８の駆動抵抗によ
る出力損失、油温の上昇等の不具合を招くため好ましく
ないが、上記装置においては無段変速機構１９が入力軸
４及び出力軸２０の上方で左右対称的に配置されている
ので、とくに無段変速機構１９の無端ベルト１８が油面
に浸ってその油面を攪拌することはない。The immersion of the continuously variable transmission mechanism 19 in the oil surface accumulated in the lower portion of the speed change casing 10 means that the endless belt 18 is provided on the oil surface of the variable pulley 15 and 17 in addition to the variable pulleys 15 and 17. Will be soaked, both variable pulley 15,
17 and the endless belt 18 vigorously agitate the oil surface, which causes problems such as output loss due to driving resistance of the variable pulleys 15 and 17 and the endless belt 18 and an increase in oil temperature, which is not preferable. Since the continuously variable transmission mechanism 19 is symmetrically arranged above the input shaft 4 and the output shaft 20, the endless belt 18 of the continuously variable transmission mechanism 19 does not particularly soak into the oil surface and agitate the oil surface. .
【００１６】従って、第３ケーシング部分１０３の底部
における油溜りの油面高さを上昇させることができて、
歯車１３、２２と第３ケーシング部分１０３の底部との
上下間隙を小さくすることが可能となり、第２軸１２、
第３軸１６及び出力軸２０にそれぞれ垂直な縦断面が略
三角形である第３ケーシング部分１０３の縦断面積を最
小として、変速ケーシング１０のうち第３ケーシング部
分１０３を部分的に小型化することが可能となるので、
この面からも車両への搭載が比較的容易となると共に、
車両に搭載されたその部分の地上高を大きくすることが
できる長所もある。Therefore, the oil level of the oil sump at the bottom of the third casing 103 can be increased,
It is possible to reduce the vertical gap between the gears 13 and 22 and the bottom of the third casing portion 103, and the second shaft 12,
It is possible to partially reduce the size of the third casing portion 103 of the transmission casing 10 by minimizing the vertical sectional area of the third casing portion 103 having a substantially triangular vertical section perpendicular to the third shaft 16 and the output shaft 20. Because it will be possible
From this aspect, mounting on a vehicle is relatively easy,
There is also an advantage that the ground clearance of the part mounted on the vehicle can be increased.
【００１７】さらに、駆動軸２３がエンジン側から中空
伝動軸３及び中空入力軸４内を挿通するように延びて、
入力軸４から変速ケーシング１０内へ突出した駆動軸２
３の先端部にオイルポンプ２４が配置されており、しか
も、無段変速機構１９が入力軸４の上方に配置されてい
るので、オイルポンプ２４は無段変速機構１９の直下に
形成された空間内に配置することができて、オイルポン
プ２４を設置するための軸方向空間を、例えばトルクコ
ンバータ１と遊星歯車機構５との間にとくに設ける必要
がなく、また、オイルポンプ２４が変速ケーシング１０
内に設置されているので、オイルポンプを変速ケーシン
グ外に配置して、変速ケーシングの全長を小さくしたも
のと比較し、車両搭載に関する空間上の制限、あるい
は、他の搭載物からの制約を低減させることができて、
車両用のベルト式無段変速機として特に好適である。Further, the drive shaft 23 extends from the engine side so as to pass through the hollow transmission shaft 3 and the hollow input shaft 4,
Drive shaft 2 protruding from input shaft 4 into speed change casing 10
Since the oil pump 24 is arranged at the tip of the oil pump 3, and the continuously variable transmission mechanism 19 is arranged above the input shaft 4, the oil pump 24 is formed in the space immediately below the continuously variable transmission mechanism 19. It is not necessary to provide an axial space for installing the oil pump 24, for example, between the torque converter 1 and the planetary gear mechanism 5, and the oil pump 24 does not need to be provided.
Since it is installed inside, the oil pump is placed outside the speed change casing to reduce the space restrictions related to vehicle mounting or restrictions from other loads compared to the case where the total length of the speed change casing is reduced. You can let
It is particularly suitable as a belt type continuously variable transmission for vehicles.
【００１８】次に、図３に示す実施形態例では、入力軸
４と同軸上に配置された出力軸２０に対し、第２軸１２
及び第３軸１６がそれぞれ斜め下方に間隔をおいて出力
軸２０と平行で、出力軸２０を中心として左右対称とな
るようにそれぞれ回転自在に配置されており、第２軸１
２に取り付けられた可変駆動プーリ１５と第３軸１６に
取り付けられた可変従動プーリ１７との間に無端ベルト
１８がかけわたされて、無段変速機構１９が形成され、
また、上記実施形態例と同様に、エンジン側から中空伝
動軸及び中空入力軸４内を挿通して、入力軸４から変速
ケーシング１０内へ突出した駆動軸２３の先端部にオイ
ルポンプ２４が配置されている。Next, in the embodiment shown in FIG. 3, the second shaft 12 is arranged with respect to the output shaft 20 arranged coaxially with the input shaft 4.
The third shaft 16 and the third shaft 16 are obliquely downwardly spaced from each other, are parallel to the output shaft 20, and are rotatably arranged symmetrically with respect to the output shaft 20.
The endless belt 18 is stretched between the variable drive pulley 15 attached to the No. 2 and the variable driven pulley 17 attached to the third shaft 16 to form the continuously variable transmission mechanism 19.
Further, similarly to the above-described embodiment, the oil pump 24 is arranged at the tip of the drive shaft 23 that is inserted from the engine side through the hollow transmission shaft and the hollow input shaft 4 and projects from the input shaft 4 into the speed change casing 10. Has been done.
【００１９】このベルト式無段変速機においても、上記
実施形態例と同様に、第３ケーシング部分１０３の底部
には油溜まりが存在するが、各可変プーリ１５、１７と
第３ケーシング部分１０３底部との上下間隙を十分に確
保して、各可変プーリ１５、１７や無端ベルト１８が油
面に浸ることは防止されており、他方、車両への搭載に
際して第３ケーシング部分１０３の上方に空間が必要と
される場合等には、第３ケーシング部分１０３の第２軸
１２、第３軸１６及び出力軸２０にそれぞれ垂直な縦断
面を略三角形に小型化して、第１ケーシング部分１０１
及び第２ケーシング部分１０２に対し第３ケーシング部
分１０３が下方へコンパクトに配置されているため、そ
の搭載が容易となる利点がある。Also in this belt type continuously variable transmission, similar to the above-mentioned embodiment, there is an oil sump at the bottom of the third casing portion 103, but the variable pulleys 15 and 17 and the bottom portion of the third casing portion 103 are provided. And the variable pulleys 15 and 17 and the endless belt 18 are prevented from being immersed in the oil surface, while a space above the third casing portion 103 is provided during mounting on a vehicle. If required, the second shaft of the third casing portion 103
12, the vertical section of each of the third shaft 16 and the output shaft 20 is reduced to a substantially triangular shape, and the first casing portion 101
Since the third casing portion 103 is compactly arranged downward with respect to the second casing portion 102, there is an advantage that the mounting is easy.
【００２０】また、この実施形態例では、上記実施形態
例と同様に、出力軸２０から各可変プーリ１５、１７外
周縁までの最大距離を前記従来装置の場合より容易に小
さくして、無段変速機構１９を収容する第３ケーシング
部分１０３の外径も小さくすることが可能であって、車
両への搭載が比較的容易となる長所があり、しかも、オ
イルポンプ２４は無段変速機構１９の直上に形成された
空間内に配置することができて、オイルポンプ２４を設
置するための軸方向空間をとくに設ける必要がなく、従
って、オイルポンプ２４を変速ケーシング１０内に設置
できるばかりでなく、オイルポンプ２４の設置により変
速ケーシング１０の全長を増大させる必要もないので、
車両用のベルト式無段変速機として好適である。Further, in this embodiment, similarly to the above-mentioned embodiment, the maximum distance from the output shaft 20 to the outer peripheral edges of the variable pulleys 15 and 17 can be easily made smaller than in the case of the above-mentioned conventional device, so that there is no step. The outer diameter of the third casing portion 103 for accommodating the speed change mechanism 19 can also be made small, and there is an advantage that mounting on a vehicle is relatively easy. It can be arranged in the space formed directly above, and it is not necessary to particularly provide an axial space for installing the oil pump 24. Therefore, not only can the oil pump 24 be installed in the speed change casing 10, Since it is not necessary to increase the total length of the transmission casing 10 by installing the oil pump 24,
It is suitable as a belt type continuously variable transmission for vehicles.
【００２１】なお、上記各実施形態例においては、それ
ぞれ可変プーリが取り付けられた平行な第２軸及び第３
軸が入力軸の左右へほぼ水平に配置されているが、必要
に応じて、この平行な第２軸及び第３軸を含む面を水平
方向から傾斜させ、もしくは、この平行な第２軸及び第
３軸を入力軸から水平方向へずらして上下に配置させる
ことも可能であり、また、入力軸に対して第２軸及び第
３軸を非対称的に配置し、あるいはまた、入力軸と出力
軸との軸心を適宜ずらし、さらには、上記各変形例を適
宜組み合わせるようにしても、それぞれ上記各実施形態
例と同様な作用効果を奏することができるものである。In each of the above-described embodiments, the second parallel shaft and the third parallel shaft to which the variable pulleys are respectively attached.
The shafts are arranged substantially horizontally to the left and right of the input shaft. If necessary, the plane including the parallel second shaft and the third shaft is inclined from the horizontal direction, or the parallel second shaft and It is also possible to displace the third shaft vertically from the input shaft in the horizontal direction, or to dispose the second shaft and the third shaft asymmetrically with respect to the input shaft, or alternatively, to dispose the input shaft and the output shaft. Even if the axial center with respect to the shaft is appropriately shifted, and further, the above-mentioned modified examples are appropriately combined, the same operational effects as those of the above-described respective embodiment examples can be obtained.
【００２２】[0022]
【発明の効果】本発明にかかるベルト式無段変速機で
は、可変駆動プーリが取り付けられた第２軸及び可変従
動プーリが取り付けられた第３軸が、入力軸とそれぞれ
上下方向に間隔をおいて平行に配置されていて、入力軸
と第２軸及び第３軸のいずれもが同軸上に配置されてお
らず、しかも、第２軸及び第３軸が入力軸を通る平面に
対してほぼ対称に配置され、また、エンジン側に連結さ
れて入力軸内を回動自在に挿通する駆動軸の先端部にオ
イルポンプが配置され、かつ、オイルポンプが無段変速
機構と干渉することなく駆動軸の軸方向と垂直で無段変
速機構を通る面内に設置されているため、入力軸及びオ
イルポンプをふくめた変速機全体を容易に小さくするこ
とができるので、ベルト式無段変速機をコンパクトに構
成することができて、とくに車両用としての利点が大き
い。In the belt type continuously variable transmission according to the present invention, the second shaft to which the variable drive pulley is mounted and the third shaft to which the variable driven pulley is mounted are respectively the input shaft and the input shaft.
Vertically be disposed on a flat row at intervals, none of the input shaft and the second and third axes are not disposed coaxially, moreover, second and third axes are input shaft On the plane passing through
An oil pump is arranged substantially symmetrically with respect to the engine, and an oil pump is arranged at the tip of a drive shaft that is rotatably inserted in the input shaft and connected to the engine side, and the oil pump interferes with the continuously variable transmission mechanism. Since it is installed in the plane perpendicular to the axial direction of the drive shaft and passing through the continuously variable transmission mechanism, the entire transmission including the input shaft and the oil pump can be easily made smaller. The transmission can be made compact, which is particularly advantageous for vehicles.
【図１】本発明の実施形態例における概略上面図。FIG. 1 is a schematic top view of an embodiment of the present invention.
【図２】上記実施形態例の要部後面図。FIG. 2 is a rear view of the main part of the embodiment described above.
【図３】本発明の他の実施形態例における要部後面図。FIG. 3 is a rear view of a main part according to another embodiment of the present invention.
１ トルクコンバータ ３ 伝動軸 ４ 入力軸 ５ 遊星歯車機構 ８ 前進用湿式クラッチ １０ 変速ケーシング １１ 後進用湿式ブレーキ １２ 第２軸 １５ 可変駆動プーリ １６ 第３軸 １７ 可変従動プーリ １８ 無端ベルト １９ 無段変速機構 ２０ 出力軸 ２３ 駆動軸 ２４ オイルポンプ 1 Torque converter 3 transmission shaft 4 input axes 5 Planetary gear mechanism 8 Forward wet clutch 10 variable speed casing 11 Wet brakes for reverse 12 Second axis 15 Variable drive pulley 16 Third axis 17 Variable driven pulley 18 endless belt 19 continuously variable transmission 20 output shaft 23 Drive axis 24 oil pump
───────────────────────────────────────────────────── フロントページの続き (56)参考文献 特開 平４−341652（ＪＰ，Ａ) 特開 平７−190164（ＪＰ，Ａ) 特開 平１−283461（ＪＰ，Ａ) 特開 平４−231624（ＪＰ，Ａ) 特開 平５−126220（ＪＰ，Ａ) 実開 平７−14251（ＪＰ，Ｕ) (58)調査した分野(Int.Cl.7，ＤＢ名) F16H 37/02 F16H 9/12 - 9/20 ─────────────────────────────────────────────────── ─── Continuation of the front page (56) References JP-A-4-341652 (JP, A) JP-A-7-190164 (JP, A) JP-A-1-283461 (JP, A) JP-A-4- 231624 (JP, A) Japanese Patent Laid-Open No. 5-126220 (JP, A) Actual Development 7-14251 (JP, U) (58) Fields investigated (Int.Cl. 7 , DB name) F16H 37/02 F16H 9 / 12-9/20
Claims (3)
隔をおいて平行に配置され歯車列により上記入力軸と連
動する第２軸、上記入力軸と上下方向に間隔をおいて平
行に配置された第３軸、上記第２軸に取り付けられた可
変駆動プーリと上記第３軸に取り付けられた可変従動プ
ーリと上記両可変プーリ間にかけわたされた無端ベルト
とからなる無段変速機構、エンジン側に連結されて上記
入力軸内を回動自在に挿通する駆動軸、及び、上記入力
軸内から突出する上記駆動軸の先端部に配置されたオイ
ルポンプを有し、上記第２軸及び上記第３軸が上記入力
軸を通る平面に対してほぼ対称に配置され、上記オイル
ポンプが上記無段変速機構と干渉することなく上記駆動
軸の軸方向と垂直で上記無段変速機構を通る面内に設置
されたベルト式無段変速機。1. A hollow input shaft, the vertical direction and the input shaft vertically disposed flat row at intervals <br/> interval a second axis in conjunction with the input shaft by the gear train, the input shaft third shaft arranged in flat <br/> line spaced, Kakewata between said variable driven pulley and the both variable pulleys mounted on the variable drive pulley and the third shaft which is mounted on the second shaft And a drive shaft that is connected to the engine side and rotatably passes through the input shaft, and is disposed at the tip of the drive shaft that projects from the input shaft. Has an oil pump, and the second shaft and the third shaft have the input
A belt that is arranged substantially symmetrically with respect to a plane passing through the shaft, and is installed in a plane that passes through the continuously variable transmission mechanism perpendicular to the axial direction of the drive shaft without the oil pump interfering with the continuously variable transmission mechanism. Type continuously variable transmission.
シングを有し、同ケーシングのうち上記両可変プーリを
収容する部分の上記第２軸及び上記第３軸にそれぞれ垂
直な縦断面が略三角形であるベルト式無段変速機。 To 2. A method according to claim 1 Oite, has a casing which accommodates the whole, each vertical longitudinal section to the second axis and the third axis portion for accommodating the two variable pulleys of the casing A belt-type continuously variable transmission that has a substantially triangular shape.
列により上記第３軸と連動する出力軸が上記入力軸と同
軸上に配置されたベルト式無段変速機。3. A process according to claim 1 or Oite to claim 2, the output shaft is the input shaft and arranged belt-type continuously variable transmission are coaxially interlocked with the third shaft by a gear train.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP26249295A JP3453464B2 (en) | 1995-09-16 | 1995-09-16 | Belt type continuously variable transmission |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP26249295A JP3453464B2 (en) | 1995-09-16 | 1995-09-16 | Belt type continuously variable transmission |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0979334A JPH0979334A (en) | 1997-03-25 |
| JP3453464B2 true JP3453464B2 (en) | 2003-10-06 |
Family
ID=17376554
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP26249295A Expired - Fee Related JP3453464B2 (en) | 1995-09-16 | 1995-09-16 | Belt type continuously variable transmission |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3453464B2 (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5416009B2 (en) * | 2009-09-08 | 2014-02-12 | 本田技研工業株式会社 | Continuously variable transmission |
| JP7305375B2 (en) * | 2019-02-28 | 2023-07-10 | ダイハツ工業株式会社 | transmission |
| JP7391464B2 (en) * | 2019-02-28 | 2023-12-05 | ダイハツ工業株式会社 | transmission |
| JP7123505B2 (en) * | 2019-06-28 | 2022-08-23 | ダイハツ工業株式会社 | transmission |
| JP7374557B2 (en) * | 2019-11-29 | 2023-11-07 | ダイハツ工業株式会社 | transmission |
-
1995
- 1995-09-16 JP JP26249295A patent/JP3453464B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0979334A (en) | 1997-03-25 |
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