JP2014152884A - Movable sheave support structure for continuously variable transmission - Google Patents

Movable sheave support structure for continuously variable transmission Download PDF

Info

Publication number
JP2014152884A
JP2014152884A JP2013024286A JP2013024286A JP2014152884A JP 2014152884 A JP2014152884 A JP 2014152884A JP 2013024286 A JP2013024286 A JP 2013024286A JP 2013024286 A JP2013024286 A JP 2013024286A JP 2014152884 A JP2014152884 A JP 2014152884A
Authority
JP
Japan
Prior art keywords
oil
outer peripheral
movable sheave
collar
support structure
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.)
Granted
Application number
JP2013024286A
Other languages
Japanese (ja)
Other versions
JP6060001B2 (en
Inventor
Takatoshi Imai
隆敏 今井
Hiromichi Ito
博倫 伊藤
Takahiro Kishimoto
隆宏 岸本
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Exedy Corp
Original Assignee
Exedy Corp
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 Exedy Corp filed Critical Exedy Corp
Priority to JP2013024286A priority Critical patent/JP6060001B2/en
Publication of JP2014152884A publication Critical patent/JP2014152884A/en
Application granted granted Critical
Publication of JP6060001B2 publication Critical patent/JP6060001B2/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C33/00—Parts of bearings; Special methods for making bearings or parts thereof
    • F16C33/02—Parts of sliding-contact bearings
    • F16C33/04—Brasses; Bushes; Linings
    • F16C33/06—Sliding surface mainly made of metal
    • F16C33/10—Construction relative to lubrication
    • F16C33/1025—Construction relative to lubrication with liquid, e.g. oil, as lubricant
    • F16C33/103—Construction relative to lubrication with liquid, e.g. oil, as lubricant retained in or near the bearing
    • F16C33/104—Construction relative to lubrication with liquid, e.g. oil, as lubricant retained in or near the bearing in a porous body, e.g. oil impregnated sintered sleeve
    • 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
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C29/00—Bearings for parts moving only linearly
    • F16C29/02—Sliding-contact bearings

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Mechanical Engineering (AREA)
  • Transmissions By Endless Flexible Members (AREA)

Abstract

PROBLEM TO BE SOLVED: To provide a structure supporting a movable sheave by using an oil-impregnated bushing, in which a foreign matter is prevented from being easily caught between the oil-impregnated bushing and a collar.SOLUTION: This movable sheave support structure is provided for supporting a moveable sheave 2 on a rotating shaft 4. Here, the moveable sheave 2 is arranged opposing to a fixed sheave 3 and formed movable in a shaft direction with respect to the fixed sheave 3. The structure includes a cylindrical collar 14 and an oil-impregnated bushing 15. The collar 14 is arranged around the outer periphery of the rotation shaft 4. The oil-impregnated bushing 15 is arranged on the outer peripheral surface of the collar 14 and supports the movable sheave 2 movably in and rotatably about the shaft direction with respect to the collar 14. Further, the oil-impregnated bushing 15 has, on an end surface thereof, an inner peripheral side flat surface 15a for preventing a foreign matter from being caught, on the inner peripheral part abutting to the outer peripheral surface of the collar.

Description

本発明は、可動シーブ支持構造、特に、固定シーブに対向して配置されるとともに固定シーブに対して軸方向に移動可能な可動シーブを回転軸に支持するための無段変速機用の可動シーブ支持構造に関する。   The present invention relates to a movable sheave support structure, and in particular, a movable sheave for a continuously variable transmission for supporting a movable sheave disposed opposite to a fixed sheave and movable in the axial direction with respect to the fixed sheave on a rotating shaft. It relates to the support structure.

スクータ型の自動二輪車等においては、ベルト式の無段変速機が採用されている。この無段変速機は、エンジンのクランク軸に固定された駆動プーリと、従動プーリと、これらのプーリ間に架け渡されたベルトと、を備えている。そして、駆動プーリは、クランク軸に固定された固定シーブと、固定シーブに対向して配置され軸方向に移動自在な可動シーブと、を有している。   In a scooter type motorcycle or the like, a belt type continuously variable transmission is employed. This continuously variable transmission includes a drive pulley fixed to the crankshaft of the engine, a driven pulley, and a belt that is stretched between these pulleys. The drive pulley includes a fixed sheave fixed to the crankshaft, and a movable sheave that is disposed to face the fixed sheave and is movable in the axial direction.

ここで、可動シーブの内周面にはブッシュが設けられ、このブッシュによって可動シーブはクランク軸の外周側に設けられたカラーに対して軸方向にスライド自在に支持されている。そして、ブッシュの軸方向中央部には環状の凹部が形成され、この凹部にグリースが充填されている。また、可動シーブの内周面において、ブッシュの両端にはグリースが外部に流れ出るのを防止するとともに、外部から異物が侵入するのを抑えるために、１対のオイルシールが装着されている。   Here, a bush is provided on the inner peripheral surface of the movable sheave, and the movable sheave is supported by the bush so as to be slidable in the axial direction with respect to a collar provided on the outer peripheral side of the crankshaft. And the annular recessed part is formed in the axial direction center part of a bush, and this recessed part is filled with grease. In addition, a pair of oil seals is attached to both ends of the bush on the inner peripheral surface of the movable sheave to prevent grease from flowing out and to prevent foreign matter from entering from the outside.

このような可動シーブの支持構造において、特許文献１には、可動シーブを支持するブッシュを含油ブッシュとすることが示されている。   In such a movable sheave support structure, Patent Document 1 discloses that a bush that supports the movable sheave is an oil-impregnated bush.

特開２００９−１２７６４５号公報JP 2009-127645 A

特許文献１に示された構成では、含油ブッシュによって可動シーブを支持することによって、グリースが不要となり、ひいてはオイルシールを設ける必要がない。   In the configuration shown in Patent Document 1, the movable sheave is supported by the oil-impregnated bush, thereby eliminating the need for grease and hence the need for providing an oil seal.

ここで、ブッシュの端面内周部には、ブッシュが組み込まれた可動シーブをカラーに対してスムーズに組み込めるように、面取りが形成されている。   Here, a chamfer is formed on the inner peripheral portion of the end surface of the bush so that the movable sheave incorporating the bush can be smoothly incorporated into the collar.

しかし、この面取りは、外方に行くにしたがって広がるテーパ状であるために、外部からの異物を内方に取り込みやすく、取り込まれた異物が、ブッシュの内周面とカラーの外周面との間に噛み込み、焼き付きの原因となる。特に、含油ブッシュを採用した支持構造では、オイルシールが設けられていないので、異物が面取り部分に侵入しやすく、以上の問題はより顕著になる。   However, since this chamfer is a tapered shape that spreads outward, it is easy to take in foreign matter inward, and the foreign matter that is taken in is between the inner peripheral surface of the bush and the outer peripheral surface of the collar. It will bite and cause seizure. In particular, in a support structure that employs an oil-impregnated bush, since no oil seal is provided, foreign matter is likely to enter the chamfered portion, and the above problem becomes more prominent.

本発明の課題は、含油ブッシュを用いて可動シーブを支持した構造において、含油ブッシュとカラーとの間に異物が噛み込むのを抑えることにある。   An object of the present invention is to prevent foreign matter from getting caught between the oil-impregnated bush and the collar in the structure in which the movable sheave is supported using the oil-impregnated bush.

（１）本発明の一側面に係る無段変速機用の可動シーブ支持構造は、固定シーブに対向して配置されるとともに固定シーブに対して軸方向に移動可能な可動シーブを回転軸に支持するための支持構造であって、筒状のカラーと、含油ブッシュと、を備えている。カラーは回転軸の外周に配置されている。含油ブッシュは、カラーの外周面に配置され、カラーに対して可動シーブを軸方向移動自在かつ回転自在に支持する。また、含油ブッシュは、軸方向の少なくとも一方の端面において、カラー外周面に当接する内周部に異物噛み込み防止用の非テーパ面を有する。   (1) A movable sheave support structure for a continuously variable transmission according to one aspect of the present invention is disposed so as to face a fixed sheave and supports a movable sheave that is movable in the axial direction with respect to the fixed sheave on a rotating shaft. This is a support structure for providing a cylindrical collar and an oil-impregnated bush. The collar is disposed on the outer periphery of the rotating shaft. The oil-impregnated bush is disposed on the outer peripheral surface of the collar, and supports the movable sheave with respect to the collar so as to be axially movable and rotatable. In addition, the oil-impregnated bush has a non-tapered surface for preventing foreign matter biting on an inner peripheral portion that is in contact with the outer peripheral surface of the collar on at least one end surface in the axial direction.

ここでは、含油ブッシュによって可動シーブが支持されているので、ブッシュにグリースを充填する必要がなく、またオイルシールが不要になる。また、オイルシールが不要になるので、外部からの異物がブッシュ部分に侵入しやすくなるが、ブッシュの端面には異物噛み込み防止用の非テーパ面が形成されているので、ブッシュとカラーとの間に異物が噛み込みにくくなる。このため、異物の噛み込みによってブッシュとカラーとが焼き付く等の不具合を抑えることができる。   Here, since the movable sheave is supported by the oil-impregnated bush, it is not necessary to fill the bush with grease, and an oil seal becomes unnecessary. In addition, since no oil seal is required, foreign matter from the outside tends to enter the bush part, but the non-tapered surface is formed on the end face of the bush to prevent foreign matter from getting caught. Foreign matter is less likely to be caught between them. For this reason, it is possible to suppress problems such as seizure of the bush and the collar due to the biting of foreign matter.

（２）好ましくは、可動シーブにおいて、含油ブッシュの一方の端面側の内径は、含油ブッシュの外径よりも小さい。   (2) Preferably, in the movable sheave, the inner diameter of one end face side of the oil-impregnated bush is smaller than the outer diameter of the oil-impregnated bush.

ここでは、可動シーブの内径が含油ブッシュの外径よりも小さいので、外部から含油ブッシュが設けられた部分に異物が侵入しにくくなる。   Here, since the inner diameter of the movable sheave is smaller than the outer diameter of the oil-impregnated bush, it is difficult for foreign matter to enter the portion where the oil-impregnated bush is provided from the outside.

（３）好ましくは、含油ブッシュの非テーパ面は、回転軸に対して直交する平坦面である。また、含油ブッシュの一方の端面は、テーパ面と、外周側平坦面と、をさらに有する。テーパ面は、非テーパ面としての平坦面の外周側に形成され、軸方向外側に行くにしたがって広がる。外周側平坦面は、テーパ面のさらに外周側に形成され、回転軸に対して直交する。   (3) Preferably, the non-tapered surface of the oil-impregnated bush is a flat surface orthogonal to the rotation axis. Moreover, one end surface of the oil-impregnated bush further has a tapered surface and an outer peripheral side flat surface. The tapered surface is formed on the outer peripheral side of a flat surface as a non-tapered surface and expands toward the outer side in the axial direction. The outer peripheral flat surface is formed further on the outer peripheral side of the tapered surface and is orthogonal to the rotation axis.

可動シーブの内周面とカラーとの間の隙間を侵入してきた空気は、含油ブッシュの一方の端面に形成されたテーパ面に沿って内周側に案内され、その後平坦面に沿ってさらに内周側に導かれる。そして、カラーの外周面に当り、逆に外側に流れる。   The air that has entered the gap between the inner peripheral surface of the movable sheave and the collar is guided to the inner peripheral side along the tapered surface formed on one end surface of the oil-impregnated bush, and then further into the inner surface along the flat surface. Guided to the circumferential side. Then, it hits the outer peripheral surface of the collar and flows outward.

このように、含油ブッシュの一方の端面におけるテーパ面と平坦面とカラー外周面とによって凹部が形成され、外部から侵入してきた空気がこの凹部に沿って流れることによって渦が発生する。この空気の渦によって異物が外部に排出される。   In this way, a concave portion is formed by the tapered surface, the flat surface, and the collar outer peripheral surface at one end face of the oil-impregnated bush, and vortex is generated by the air that has entered from the outside flowing along the concave portion. Foreign matter is discharged to the outside by this air vortex.

（４）好ましくは、含油ブッシュの第１端面は、外周側テーパ面と、平坦面と、を有する。外周側テーパ面は、外周面に連続し、軸方向外側にいくにしたがって径が小さくなる。平坦面は、外周側テーパ面から内周側に連続し、回転軸に直交する。   (4) Preferably, the 1st end surface of an oil-impregnated bush has an outer peripheral side taper surface and a flat surface. The outer peripheral side taper surface is continuous with the outer peripheral surface, and the diameter becomes smaller toward the outer side in the axial direction. The flat surface is continuous from the outer peripheral side tapered surface to the inner peripheral side and is orthogonal to the rotation axis.

（５）好ましくは、含油ブッシュの第１端面は固定シーブに対向している。   (5) Preferably, the first end surface of the oil-impregnated bush is opposed to the fixed sheave.

ここで、可動シーブにおいて、固定シーブに対向する側と逆側の第２端面には、カムプレート等の他の部材が設けられている場合が多く、このような場合は、第２端面からは異物が侵入しにくい。このため、異物噛み込み防止用の非テーパ面は固定シーブと対向する側に設けられている。   Here, in the movable sheave, the second end surface opposite to the side facing the fixed sheave is often provided with another member such as a cam plate. In such a case, from the second end surface, Foreign matter is difficult to enter. For this reason, the non-tapered surface for preventing foreign object biting is provided on the side facing the fixed sheave.

以上のような本発明では、含油ブッシュを用いて可動シーブを支持した構造において、含油ブッシュとカラーとの間に異物が噛み込みにくくなる。   In the present invention as described above, in the structure in which the movable sheave is supported using the oil-impregnated bush, foreign matter is less likely to be caught between the oil-impregnated bush and the collar.

本発明の一実施形態による可動シーブ及びその支持構造の断面図。Sectional drawing of the movable sheave and its support structure by one Embodiment of this invention. 図１に拡大部分図。FIG. 1 is an enlarged partial view. 従来の支持構造の図２に相当する図。The figure corresponding to FIG. 2 of the conventional support structure. 異物を吐き出す作用を説明するための図。The figure for demonstrating the effect | action which exhales a foreign material. 本発明の他の実施形態の図２に相当する図。The figure equivalent to FIG. 2 of other embodiment of this invention.

［全体構成］
図１は、無段変速機の駆動プーリ１を構成する可動シーブ２と、その支持構造と、を示している。なお、駆動プーリ１は、可動シーブ２に対向して設けられた固定シーブ３をさらに有している。固定シーブ３は、エンジンの出力回転軸４に固定され、軸方向に移動不能である。そして、可動シーブ２と固定シーブ３との間にベルト５が架けられている。 [overall structure]
FIG. 1 shows a movable sheave 2 constituting a drive pulley 1 of a continuously variable transmission and a support structure thereof. The drive pulley 1 further includes a fixed sheave 3 provided to face the movable sheave 2. The fixed sheave 3 is fixed to the output rotation shaft 4 of the engine and cannot move in the axial direction. A belt 5 is placed between the movable sheave 2 and the fixed sheave 3.

以下、可動シーブ２及びその支持構造について詳細に説明する。   Hereinafter, the movable sheave 2 and the support structure thereof will be described in detail.

［可動シーブ２］
可動シーブ２は、円板状の部材であり、中央に貫通孔１０を有している。可動シーブ２の固定シーブ３と対向する側の面は、外周側にいくにしたがって固定シーブ３から離れるように傾斜するテーパ状に形成され、固定シーブ３の対向する面とともにＶ溝を形成している。また、可動シーブ２の固定シーブ３と逆側の面には、複数の溝部１１が形成されている。 [Movable sheave 2]
The movable sheave 2 is a disk-shaped member and has a through hole 10 in the center. The surface of the movable sheave 2 on the side facing the fixed sheave 3 is formed in a tapered shape that is inclined away from the fixed sheave 3 as it goes to the outer peripheral side, and forms a V-groove together with the surface facing the fixed sheave 3. Yes. A plurality of grooves 11 are formed on the surface of the movable sheave 2 opposite to the fixed sheave 3.

可動シーブ２の貫通孔１０には、カラー１４が挿入されている。カラー１４は回転軸４の外周に設けられ、回転軸４に対して軸方向に移動不能である。可動シーブ２の内周面、すなわち貫通孔１０には、含油ブッシュ１５が装着されている。可動シーブ２の貫通孔１０の固定シーブ３側の端部には、図１及び図１の一部を拡大して示す図２に示すように、他の部分に比較して内径が小さい小径部１０ａが形成されている。小径部１０ａの内径ｄは、含油ブッシュ１５の外径Ｄよりも小さい。そして、可動シーブ２は、含油ブッシュ１５とともにカラー１４の外周面に沿ってスライド自在であり、固定シーブ３に対して接近、離反自在である。   A collar 14 is inserted into the through hole 10 of the movable sheave 2. The collar 14 is provided on the outer periphery of the rotating shaft 4 and cannot move in the axial direction with respect to the rotating shaft 4. An oil retaining bush 15 is mounted on the inner peripheral surface of the movable sheave 2, that is, the through hole 10. At the end of the movable sheave 2 on the fixed sheave 3 side of the through-hole 10, as shown in FIG. 2, which is an enlarged view of a part of FIG. 1 and FIG. 10a is formed. The inner diameter d of the small diameter portion 10 a is smaller than the outer diameter D of the oil retaining bush 15. The movable sheave 2 is slidable along the outer peripheral surface of the collar 14 together with the oil-impregnated bush 15, and can move toward and away from the fixed sheave 3.

可動シーブ２の複数の溝部１１には、ウェイト１８が径方向に移動自在に収容されている。また、カラー１４の固定シーブ３と逆側の端面には、カムプレート１９が固定されている。そして、このカムプレート１９によってウェイト１８が溝部１１内に保持されている。カムプレート１９は、外周側に行くにしたがって溝部１１の壁との間隔が狭くなるように傾斜している。   Weights 18 are accommodated in the plurality of grooves 11 of the movable sheave 2 so as to be movable in the radial direction. A cam plate 19 is fixed to the end surface of the collar 14 opposite to the fixed sheave 3. The cam plate 19 holds the weight 18 in the groove 11. The cam plate 19 is inclined so that the distance from the wall of the groove portion 11 becomes narrower as it goes to the outer peripheral side.

したがって、回転が高くなり、ウェイト１８が遠心力で外周側に移動すると、可動シーブ２は固定シーブ３に近づくように移動する。   Accordingly, when the rotation increases and the weight 18 moves to the outer peripheral side by centrifugal force, the movable sheave 2 moves so as to approach the fixed sheave 3.

［含油ブッシュ１５］
含油ブッシュ１５は、多孔質材料である焼結金属に潤滑油を含浸して形成されたものである。含油ブッシュ１５は、図２に示すように、異物噛み込み防止用の内周側平坦面（非テーパ面）１５ａと、内周側テーパ面１５ｂと、外周側平坦面１５ｃと、外周側テーパ面１５ｄと、を有している。 [Oil-impregnated bush 15]
The oil-impregnated bush 15 is formed by impregnating a sintered metal, which is a porous material, with a lubricating oil. As shown in FIG. 2, the oil-impregnated bush 15 includes an inner peripheral side flat surface (non-tapered surface) 15a, an inner peripheral side tapered surface 15b, an outer peripheral side flat surface 15c, and an outer peripheral side tapered surface for preventing foreign object biting. 15d.

内周側平坦面１５ａは、含油ブッシュ１５の最も内周側に形成された面であり、回転軸４に対して直交している。内周側テーパ面１５ｂは、内周側平坦面１５ａの外周側に形成され、軸方向外側に行くにしたがって広がっている。外周側平坦面１５ｃは、内周側テーパ面１５ｂのさらに外周側に形成され、回転軸４に対して直交している。外周側テーパ面１５ｄは、外周側平坦面１５ｃの外周側に含油ブッシュ１５の外周面に連続するように形成され、内周側テーパ面１５ｂとは逆方向に傾斜している。   The inner peripheral flat surface 15 a is a surface formed on the innermost peripheral side of the oil-impregnated bush 15 and is orthogonal to the rotation shaft 4. The inner peripheral side taper surface 15b is formed on the outer peripheral side of the inner peripheral side flat surface 15a and expands toward the outer side in the axial direction. The outer peripheral flat surface 15 c is formed on the outer peripheral side of the inner peripheral tapered surface 15 b and is orthogonal to the rotation shaft 4. The outer peripheral side tapered surface 15d is formed on the outer peripheral side of the outer peripheral side flat surface 15c so as to be continuous with the outer peripheral surface of the oil-impregnated bush 15, and is inclined in the opposite direction to the inner peripheral side tapered surface 15b.

なお、含油ブッシュ１５の逆側の端面は、図２に示した形状と同様の形状にしてもよいし、従来と同様の形状にしてもよい。   The end face on the opposite side of the oil-impregnated bush 15 may have the same shape as that shown in FIG. 2 or may have the same shape as the conventional one.

［異物の侵入］
以上のような可動シーブ２の支持構造では、含油ブッシュ１５によって可動シーブ２がカラー１４に支持されているので、グリース等の潤滑剤が不要になる。このため、グリースが外部に流れ出るのを防止するためのオイルシールも不要となる。 [Invasion of foreign matter]
In the support structure of the movable sheave 2 as described above, since the movable sheave 2 is supported by the collar 14 by the oil retaining bush 15, a lubricant such as grease becomes unnecessary. This eliminates the need for an oil seal for preventing the grease from flowing out.

また、可動シーブ２の貫通孔１０において、固定シーブ３側の端部は小径部１０ａになっている。したがって、外部から異物が侵入しにくくなっている。   Further, in the through hole 10 of the movable sheave 2, the end portion on the fixed sheave 3 side is a small diameter portion 10a. Therefore, it is difficult for foreign matter to enter from the outside.

異物が含油ブッシュ部分に侵入してきた場合の作用を、従来との比較で図３及び図４に示している。図３は、従来の含油ブッシュ１５’であり、図４は本発明の一実施形態による含油ブッシュ１５である。   FIG. 3 and FIG. 4 show the operation when a foreign substance has entered the oil-impregnated bush portion in comparison with the prior art. FIG. 3 shows a conventional oil-impregnated bush 15 ′, and FIG. 4 shows an oil-impregnated bush 15 according to an embodiment of the present invention.

まず、図３に示す従来の含油ブッシュ１５’では、端面の内周部にテーパ面１５ｂ’のみが形成されている。この場合は、外部から侵入してきた異物Ｐは、テーパ面１５ｂ’に沿って内周側に入り込み、含油ブッシュ１５’の内周面とカラー１４の外周面との間に噛み込む。このため、この部分で焼き付きが生じるおそれがある。   First, in the conventional oil-impregnated bush 15 ′ shown in FIG. 3, only the tapered surface 15 b ′ is formed on the inner peripheral portion of the end surface. In this case, the foreign matter P that has entered from the outside enters the inner peripheral side along the tapered surface 15 b ′ and is caught between the inner peripheral surface of the oil-impregnated bush 15 ′ and the outer peripheral surface of the collar 14. For this reason, there is a possibility that seizure occurs in this portion.

一方、図４に示す本実施形態では、外部から侵入してきた異物Ｐは、内周側テーパ面１５ｂによって内部に案内された後、内周側平坦面１５ａによりさらに内周側に導かれてカラー１４の外周面に衝突する。ここで、含油ブッシュ１５の端面部分には、内周側テーパ面１５ｂと、内周側平坦面１５ａと、カラー１４の外周面と、によって軸方向内部に凹む凹部が形成されている。したがって、この凹部の部分で空気の渦が発生することになる。この渦によって、外部から侵入してきた異物Ｐは外部に吐出されることになる。   On the other hand, in the present embodiment shown in FIG. 4, the foreign matter P that has entered from the outside is guided to the inside by the inner peripheral side tapered surface 15b, and then guided further to the inner peripheral side by the inner peripheral side flat surface 15a. 14 collides with the outer peripheral surface. Here, the end face portion of the oil-impregnated bush 15 is formed with a recess recessed inward in the axial direction by the inner peripheral tapered surface 15b, the inner peripheral flat surface 15a, and the outer peripheral surface of the collar 14. Accordingly, an air vortex is generated in the concave portion. Due to this vortex, the foreign matter P entering from the outside is discharged to the outside.

［他の実施形態］
本発明は以上のような実施形態に限定されるものではなく、本発明の範囲を逸脱することなく種々の変形又は修正が可能である。 [Other Embodiments]
The present invention is not limited to the above-described embodiments, and various changes or modifications can be made without departing from the scope of the present invention.

図５に含油ブッシュの別の実施形態を示している。この図５の含油ブッシュ２５は、平坦面２５ａと、外周側テーパ面２５ｂと、を有している。平坦面２５ａは、回転軸に直交しており、含油ブッシュ２５の内周面から外周側に向かって延びている。外周側テーパ面２５ｂは前記実施形態の外周側テーパ面１５ｄと同様の形状である。   FIG. 5 shows another embodiment of the oil-impregnated bush. The oil-impregnated bush 25 in FIG. 5 has a flat surface 25a and an outer peripheral side tapered surface 25b. The flat surface 25a is orthogonal to the rotation axis and extends from the inner peripheral surface of the oil-impregnated bush 25 toward the outer peripheral side. The outer peripheral side taper surface 25b has the same shape as the outer peripheral side taper surface 15d of the embodiment.

このような実施形態によっても、空気の渦を形成する作用はないものの、異物の噛み込みを抑えることができる。   Even in such an embodiment, although there is no effect of forming an air vortex, the biting of foreign matter can be suppressed.

１ 駆動プーリ
２ 可動シーブ
３ 固定シーブ
４ 回転軸
５ ベルト
１０ 貫通孔
１０ａ 小径部
１４ カラー
１５，２５ 含油ブッシュ
１５ａ 内周側平坦面（非テーパ面）
１５ｂ 内周側テーパ面
１５ｃ 外周側平坦面
１５ｄ 外周側テーパ面 DESCRIPTION OF SYMBOLS 1 Drive pulley 2 Movable sheave 3 Fixed sheave 4 Rotating shaft 5 Belt 10 Through-hole 10a Small diameter part 14 Collar 15, 25 Oil-impregnated bush 15a Inner peripheral side flat surface (non-tapered surface)
15b Inner peripheral side taper surface 15c Outer peripheral side flat surface 15d Outer peripheral side taper surface

Claims (5)

固定シーブに対向して配置されるとともに前記固定シーブに対して軸方向に移動可能な可動シーブを回転軸に支持するための無段変速機用の可動シーブ支持構造であって、
前記回転軸の外周に配置された筒状のカラーと、
前記カラーの外周面に配置され、前記カラーに対して前記可動シーブを軸方向移動自在かつ回転自在に支持する含油ブッシュと、
を備え、
前記含油ブッシュは、軸方向の少なくとも一方の端面において、前記カラー外周面に当接する内周部に異物噛み込み防止用の非テーパ面を有する、
無段変速機用の可動シーブ支持構造。 A movable sheave support structure for a continuously variable transmission for supporting a movable sheave arranged opposite to the fixed sheave and movable in the axial direction with respect to the fixed sheave on a rotating shaft,
A cylindrical collar disposed on the outer periphery of the rotating shaft;
An oil-impregnated bush disposed on the outer peripheral surface of the collar and supporting the movable sheave axially movable and rotatable with respect to the collar;
With
The oil-impregnated bush has a non-tapered surface for preventing foreign matter biting on an inner peripheral portion that abuts on the outer peripheral surface of the collar at at least one end surface in the axial direction.
A movable sheave support structure for a continuously variable transmission. 前記可動シーブにおいて、前記含油ブッシュの一方の端面側の内径は、前記含油ブッシュの外径よりも小さい、請求項１に記載の無段変速機用の可動シーブ支持構造。   2. The movable sheave support structure for a continuously variable transmission according to claim 1, wherein an inner diameter of one end face side of the oil-impregnated bush is smaller than an outer diameter of the oil-impregnated bush. 前記含油ブッシュの非テーパ面は、前記回転軸に対して直交する平坦面であり、
前記含油ブッシュの一方の端面は、
前記非テーパ面としての平坦面の外周側に形成され、軸方向外側に行くにしたがって広がるテーパ面と、
前記テーパ面のさらに外周側に形成され、前記回転軸に対して直交する外周側平坦面と、
をさらに有する、
請求項１又は２に記載の無段変速機用の可動シーブ支持構造。 The non-tapered surface of the oil-impregnated bush is a flat surface orthogonal to the rotation axis,
One end face of the oil-impregnated bush is
A tapered surface formed on the outer peripheral side of the flat surface as the non-tapered surface and spreads outward in the axial direction;
An outer peripheral flat surface formed on the outer peripheral side of the tapered surface and orthogonal to the rotation axis;
Further having
The movable sheave support structure for a continuously variable transmission according to claim 1 or 2. 前記含油ブッシュの第１端面は、
外周面に連続し、軸方向外側にいくにしたがって径が小さくなる外周側テーパ面と、
前記外周側テーパ面から内周側に連続し、回転軸に直交する平坦面と、
を有する、
請求項１又は２に記載の無段変速機用の可動シーブ支持構造。 The first end surface of the oil-impregnated bush is:
An outer peripheral taper surface that is continuous with the outer peripheral surface and decreases in diameter as it goes outward in the axial direction;
A flat surface that is continuous from the outer peripheral taper surface to the inner peripheral side and orthogonal to the rotation axis;
Having
The movable sheave support structure for a continuously variable transmission according to claim 1 or 2. 前記含油ブッシュの第１端面は前記固定シーブに対向している、請求項１から４のいずれかに記載の無段変速機用の可動シーブ支持構造。   The movable sheave support structure for a continuously variable transmission according to any one of claims 1 to 4, wherein a first end surface of the oil-impregnated bush is opposed to the fixed sheave.
JP2013024286A 2013-02-12 2013-02-12 Movable sheave support structure for continuously variable transmission Active JP6060001B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2013024286A JP6060001B2 (en) 2013-02-12 2013-02-12 Movable sheave support structure for continuously variable transmission

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2013024286A JP6060001B2 (en) 2013-02-12 2013-02-12 Movable sheave support structure for continuously variable transmission

Publications (2)

Publication Number Publication Date
JP2014152884A true JP2014152884A (en) 2014-08-25
JP6060001B2 JP6060001B2 (en) 2017-01-11

Family

ID=51574943

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2013024286A Active JP6060001B2 (en) 2013-02-12 2013-02-12 Movable sheave support structure for continuously variable transmission

Country Status (1)

Country Link
JP (1) JP6060001B2 (en)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0337461A (en) * 1989-07-05 1991-02-18 Yamaha Motor Co Ltd V-belt continuously variable transmission
JPH06185589A (en) * 1992-12-17 1994-07-05 Suzuki Motor Corp V-belt continuously variable transmission device
JP2004125105A (en) * 2002-10-04 2004-04-22 Mitsubishi Heavy Ind Ltd Thrust bearing
JP2004308682A (en) * 2003-04-02 2004-11-04 Mitsubishi Materials Corp Sintered oil retaining bearing

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0337461A (en) * 1989-07-05 1991-02-18 Yamaha Motor Co Ltd V-belt continuously variable transmission
JPH06185589A (en) * 1992-12-17 1994-07-05 Suzuki Motor Corp V-belt continuously variable transmission device
JP2004125105A (en) * 2002-10-04 2004-04-22 Mitsubishi Heavy Ind Ltd Thrust bearing
JP2004308682A (en) * 2003-04-02 2004-11-04 Mitsubishi Materials Corp Sintered oil retaining bearing

Also Published As

Publication number Publication date
JP6060001B2 (en) 2017-01-11

Similar Documents

Publication Publication Date Title
JP6442837B2 (en) Tapered roller bearings
US9803718B2 (en) Torsional vibration reducing device
JP2013053734A (en) Cage for rolling bearing and rolling bearing
JP2006226400A (en) Shaft device
JP6852260B2 (en) Roller bearing
JP6359251B2 (en) Idler pulley support device
US20160298688A1 (en) Spherical roller bearing arrangement
US20160025134A1 (en) Cage for angular ball bearing
JP6060001B2 (en) Movable sheave support structure for continuously variable transmission
US10001171B2 (en) Rolling bearing
JP7142629B2 (en) Angular contact ball bearing cage and angular contact ball bearing
KR101462782B1 (en) Transmission element having a lubricating structure of the rolling bodies are two annularly arranged at a distance
JP2017110744A (en) Tapered roller bearing
JP2018135957A (en) Conical roller bearing
JP2014105809A (en) Retainer for rolling bearing
JP2015222089A (en) Needle bearing
JP2007116887A (en) Shaft for motor
KR101864611B1 (en) Ball bearing
KR101634891B1 (en) Bearing assembly for a connecting rod
JP2015152086A (en) Cage for radial roller bearing
JP2011137395A (en) Bearing device for turbocharger
JP2014132186A (en) Bearing device
JP2012163166A (en) Conical roller bearing
JP5315881B2 (en) Rolling bearing
JP2007120715A (en) Tapered roller bearing

Legal Events

Date Code Title Description
A621 Written request for application examination

Free format text: JAPANESE INTERMEDIATE CODE: A621

Effective date: 20150610

A977 Report on retrieval

Free format text: JAPANESE INTERMEDIATE CODE: A971007

Effective date: 20160316

A131 Notification of reasons for refusal

Free format text: JAPANESE INTERMEDIATE CODE: A131

Effective date: 20160405

A521 Request for written amendment filed

Free format text: JAPANESE INTERMEDIATE CODE: A523

Effective date: 20160603

TRDD Decision of grant or rejection written
A01 Written decision to grant a patent or to grant a registration (utility model)

Free format text: JAPANESE INTERMEDIATE CODE: A01

Effective date: 20161115

A61 First payment of annual fees (during grant procedure)

Free format text: JAPANESE INTERMEDIATE CODE: A61

Effective date: 20161212

R150 Certificate of patent or registration of utility model

Ref document number: 6060001

Country of ref document: JP

Free format text: JAPANESE INTERMEDIATE CODE: R150

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250