JP6791591B2 - Torque cam device and continuously variable transmission - Google Patents

Torque cam device and continuously variable transmission Download PDF

Info

Publication number
JP6791591B2
JP6791591B2 JP2017053114A JP2017053114A JP6791591B2 JP 6791591 B2 JP6791591 B2 JP 6791591B2 JP 2017053114 A JP2017053114 A JP 2017053114A JP 2017053114 A JP2017053114 A JP 2017053114A JP 6791591 B2 JP6791591 B2 JP 6791591B2
Authority
JP
Japan
Prior art keywords
torque
output
cam
cam member
rotating element
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.)
Active
Application number
JP2017053114A
Other languages
Japanese (ja)
Other versions
JP2018155340A (en
Inventor
達也 森本
達也 森本
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.)
JATCO Ltd
Original Assignee
JATCO Ltd
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 JATCO Ltd filed Critical JATCO Ltd
Priority to JP2017053114A priority Critical patent/JP6791591B2/en
Publication of JP2018155340A publication Critical patent/JP2018155340A/en
Application granted granted Critical
Publication of JP6791591B2 publication Critical patent/JP6791591B2/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Landscapes

  • Transmissions By Endless Flexible Members (AREA)
  • Transmission Devices (AREA)

Description

本発明は、無段変速機に用いて好適のトルクカム装置、及びこのトルクカム装置を備えた無段変速機に関するものである。 The present invention relates to a torque cam device suitable for use in a continuously variable transmission, and a continuously variable transmission provided with the torque cam device.

ベルト式無段変速機の変速機構の推力発生機構としてトルクカム機構を使用したものが開発されている(例えば、特許文献1参照)。
このトルクカム機構は、2つのカム部材の回転位相差に応じて推力を発生させるもので、各カム部材には、回転軸と直交する環状面に対して軸方向へ傾斜したカム斜面がそれぞれ形成され、2つのカム部材が互いにカム斜面どうしを摺動させて相対回転することにより、カム部材が離接してその全長(軸方向長)が変化する。これにより、回転軸方向への力(推力)が発生し、トルクを伝達する。
A system using a torque cam mechanism has been developed as a thrust generating mechanism of a speed change mechanism of a belt-type continuously variable transmission (see, for example, Patent Document 1).
This torque cam mechanism generates a thrust according to the rotational phase difference between the two cam members, and each cam member is formed with a cam slope inclined in the axial direction with respect to an annular surface orthogonal to the rotation axis. When the two cam members slide each other on the cam slopes and rotate relative to each other, the cam members are separated from each other and their total length (axial length) changes. As a result, a force (thrust) in the direction of the rotation axis is generated, and torque is transmitted.

車両の変速機構では、駆動源側から車輪側にトルクを伝達するドライブ状態と、車輪側から駆動源側にトルクを伝達するコースト状態との2つの態様でトルクを伝達するので、ドライブ状態に対応した第1トルクカム機構と、コースト状態に対応したト第2トルクカム機構とを装備し、これらをトルク伝達状態に応じて使い分けるようにする。 The transmission mechanism of the vehicle transmits torque in two modes, a drive state in which torque is transmitted from the drive source side to the wheel side and a coast state in which torque is transmitted from the wheel side to the drive source side. It is equipped with a first torque cam mechanism and a second torque cam mechanism corresponding to the coast state, and these are used properly according to the torque transmission state.

しかし、これら2つのトルクカム機構の切り替わり時に、動力を伝達していない状態から動力を伝達する状態に切り替わるトルクカム機構では、カム部材間のバックラッシに起因して、トルク伝達にタイムラグやショックが発生する。つまり、一方のトルクカム機構でトルクを伝達している時には、他方のトルクカム機構では2つのカム部材は互いに回転方向に追従操作していないため、他方のトルクカム機構でトルクを伝達させるためには、2つのカム部材を必要量だけ相対回転させることが必要になる。したがって、2つのカム部材を相対回転させる間はトルク伝達にタイムラグが発生し、2つのカム部材は相対回転後に瞬時にトルク伝達状態になるためトルクショックが発生する。 However, in the torque cam mechanism that switches from the state in which power is not transmitted to the state in which power is transmitted when these two torque cam mechanisms are switched, a time lag or shock occurs in torque transmission due to backlash between the cam members. That is, when torque is transmitted by one torque cam mechanism, the two cam members do not follow each other in the rotational direction in the other torque cam mechanism. Therefore, in order to transmit torque by the other torque cam mechanism, 2 It is necessary to rotate one cam member relative to the required amount. Therefore, a time lag occurs in torque transmission while the two cam members are relatively rotated, and a torque shock occurs because the two cam members are instantly in the torque transmission state after the relative rotation.

特許文献1には、このトルクカム機構の切り替わり時のトルク伝達にタイムラグやショックの発生を抑制する技術も提案されている。この技術では、トルクカム機構がトルクを伝達していないときにも、スプリングによって2つのカム部材のカム面どうしを圧接させて、2つのカム部材の回転位相を互いに追従させて、カム部材間のバックラッシを抑えようとしている。 Patent Document 1 also proposes a technique for suppressing the occurrence of a time lag or a shock in torque transmission when the torque cam mechanism is switched. In this technology, even when the torque cam mechanism does not transmit torque, the cam surfaces of the two cam members are pressed against each other by a spring so that the rotational phases of the two cam members follow each other, and the backlash between the cam members is performed. I'm trying to suppress.

特開2006−300213号公報Japanese Unexamined Patent Publication No. 2006-300123

しかしながら、特許文献1の技術では、スプリングによって2つのカム部材のカム斜面どうしを圧接させているだけなので、様々な点から、追従が確実にできなくなりバックラッシが大きくなるものと考えられる。 However, in the technique of Patent Document 1, since the cam slopes of the two cam members are only pressed against each other by the spring, it is considered that the follow-up cannot be reliably performed and the backlash increases from various points.

つまり、カム斜面どうしの摺動抵抗が大きい場合にはスプリングの付勢力が不足して追従操作が困難になる。また、2つのカム部材の相対回転量が大きく設定されていると、必要な追従量(追従のための回転)が多くなり追従操作が困難になる。さらに、車両が加速している場合にも追従操作が困難になる。このように追従が確実にできなくなると、バックラッシが大きくなるものと考えられる。 That is, when the sliding resistance between the cam slopes is large, the urging force of the spring is insufficient and the follow-up operation becomes difficult. Further, if the relative rotation amount of the two cam members is set to be large, the required follow-up amount (rotation for follow-up) increases and the follow-up operation becomes difficult. Further, the follow-up operation becomes difficult even when the vehicle is accelerating. It is considered that the backlash increases when the tracking cannot be performed reliably in this way.

本発明は、この課題に着目して創案されたもので、順方向にトルク伝達するトルクカム機構と、逆方向にトルク伝達するトルクカム機構とを備え、トルクカム機構がトルク伝達していない場合にも、当該トルクカム機構の2つのカム部材間のバックラッシの発生を抑制することができるようにした、トルクカム装置及びこのトルクカム装置を備えた無段変速機を提供することを目的としている。 The present invention has been devised in view of this problem, and includes a torque cam mechanism that transmits torque in the forward direction and a torque cam mechanism that transmits torque in the reverse direction, even when the torque cam mechanism does not transmit torque. An object of the present invention is to provide a torque cam device and a stepless transmission provided with the torque cam device, which can suppress the occurrence of backlash between two cam members of the torque cam mechanism.

(1)本発明のトルクカム装置は、入力回転要素に連結され、前記入力回転要素から出力回転要素へ順方向にトルクを伝達する際の入力側となり、螺旋状の第1駆動カム斜面を有する第1入力側カム部材と、前記出力回転要素に対して軸方向移動不能且つ相対回転可能に支持され、前記順方向にトルクを伝達する際の出力側となり、前記第1駆動カム斜面と伝達トルクに応じた力で摺接する螺旋状の第1被駆動カム斜面を有する第1出力側カム部材とからなる第1トルクカム機構と、前記出力回転要素に対して軸方向移動不能且つ相対回転可能に支持され、前記出力回転要素から前記入力回転要素へ逆方向にトルクを伝達する際の出力側となり、螺旋状の第2駆動カム斜面を有する第2出力側カム部材と、前記入力回転要素に連結され、前記逆方向にトルクを伝達する際の入力側となり、前記第2駆動カム斜面と伝達トルクに応じた力で摺接する螺旋状の第2被駆動カム斜面を有する第2入力側カム部材とからなる第2トルクカム機構と、前記入力回転要素と出力回転要素との間に介装され、前記入力回転要素に相対回転不能且つ軸方向に相対移動可能に連結されたピニオンキャリアと、前記出力回転要素に連結されたリングギヤと、サンギヤとからなる遊星歯車機構と、前記順方向にトルク伝達するときには前記第1出力側カム部材を前記出力回転要素に相対回転不能に連結すると共に前記第2出力側カム部材と前記サンギヤとを連結し、前記逆方向にトルク伝達するときには前記第2出力側カム部材を前記出力回転要素に相対回転不能に連結すると共に前記第1出力側カム部材と前記サンギヤとを連結する切替機構とを備えていることを特徴としている。 (1) The torque cam device of the present invention is connected to an input rotating element, serves as an input side when torque is forwardly transmitted from the input rotating element to the output rotating element, and has a spiral first drive cam slope. 1 The input side cam member and the output rotating element are supported so as to be non-movable in the axial direction and relatively rotatable, and serve as the output side when the torque is transmitted in the forward direction, and the first drive cam slope and the transmission torque become the same. A first torque cam mechanism composed of a first output-side cam member having a spiral first driven cam slope that slides in contact with a corresponding force, and a support that is axially immovable and relative to the output rotating element. , It becomes the output side when torque is transmitted from the output rotating element to the input rotating element in the opposite direction, and is connected to the input rotating element with a second output side cam member having a spiral second driving cam slope. It is an input side when transmitting torque in the opposite direction, and is composed of a second input side cam member having a spiral second driven cam slope that is in sliding contact with the second drive cam slope with a force corresponding to the transmission torque. A pinion carrier interposed between the second torque cam mechanism, the input rotating element and the output rotating element, and connected to the input rotating element so as to be relatively non-rotatable and axially movable, and the output rotating element. A planetary gear mechanism including a connected ring gear and a sun gear, and when torque is transmitted in the forward direction, the first output side cam member is connected to the output rotating element so as not to rotate relative to the second output side cam member. And the sun gear are connected, and when torque is transmitted in the opposite direction, the second output side cam member is connected to the output rotating element so as not to rotate relative to the output rotating element, and the first output side cam member and the sun gear are connected. It is characterized by having a switching mechanism.

(2)前記切替機構が、前記出力回転要素に相対回転不能且つ軸方向移動可能に連結されると共に軸方向移動によって前記第1出力側カム部材と第2出力側カム部材との何れか一方の出力側カム部材に連結され、他方の出力側カム部材を解放するフォーク部材と、前記フォーク部材に相対回転可能且つ軸方向相対移動不能に支持されると共に前記他方の出力側カム部材を前記サンギヤに連結する噛合いリング部材とを備えていることが好ましい。 (2) The switching mechanism is connected to the output rotating element so as to be relatively non-rotatable and axially movable, and the first output-side cam member and the second output-side cam member are connected by axial movement. A fork member that is connected to the output side cam member and releases the other output side cam member, and the other output side cam member that is supported by the fork member so as to be relatively rotatable and axially immovable, and the other output side cam member to the sun gear. It is preferable to have a meshing ring member to be connected.

(3)本発明の無段変速機は、プライマリプーリと、セカンダリプーリと、前記プライマリプーリ及び前記セカンダリプーリに掛け回されたベルト状部材と、前記プライマリプーリに推力を付与する第1推力付与機構と、前記セカンダリプーリに推力を付与する第2推力付与機構と、を備え、前記第1推力付与機構及び前記第2推力付与機構の少なくともいずれか一方に、前段に記載のトルクカム装置が装備されていることを特徴としている。 (3) The continuously variable transmission of the present invention includes a primary pulley, a secondary pulley, a belt-shaped member hung around the primary pulley and the secondary pulley, and a first thrust applying mechanism for applying thrust to the primary pulley. And a second thrust applying mechanism for applying thrust to the secondary pulley, and at least one of the first thrust applying mechanism and the second thrust applying mechanism is equipped with the torque cam device described in the previous stage. It is characterized by being.

本発明によれば、第1トルクカム機構が順方向にトルクを伝達している時には、第2トルクカム機構の第2出力側カム部材が遊星歯車機構のサンギヤに連結されて入力回転要素の回転に対して増速されるので、第2出力側カム部材を第2入力側カム部材に近接または当接させることができ、第2入力側カム部材と第2出力側カム部材との間のバックラッシの発生が抑制される。
また、第2トルクカム機構が逆方向にトルクを伝達している時には、第1トルクカム機構の第1出力側カム部材が遊星歯車機構のサンギヤに連結されて入力回転要素の回転に対して増速されるので、第1出力側カム部材を第1入力側カム部材に近接または当接させることができ、第1入力側カム部材と第1出力側カム部材との間のバックラッシの発生が抑制される。
このようにして、入力側カム部材と出力側カム部材との間のバックラッシの発生が抑制されるため、トルクの伝達方向を切り替える際に、トルク伝達のタイムラグの発生やトルクショックの発生が抑制される。
According to the present invention, when the first torque cam mechanism transmits torque in the forward direction, the second output side cam member of the second torque cam mechanism is connected to the sun gear of the planetary gear mechanism with respect to the rotation of the input rotating element. Since the speed is increased, the second output side cam member can be brought close to or in contact with the second input side cam member, and backlash occurs between the second input side cam member and the second output side cam member. Is suppressed.
Further, when the second torque cam mechanism transmits torque in the opposite direction, the first output side cam member of the first torque cam mechanism is connected to the sun gear of the planetary gear mechanism and is accelerated with respect to the rotation of the input rotating element. Therefore, the first output side cam member can be brought close to or in contact with the first input side cam member, and the occurrence of backlash between the first input side cam member and the first output side cam member is suppressed. ..
In this way, the occurrence of backlash between the input side cam member and the output side cam member is suppressed, so that the occurrence of a torque transmission time lag and the occurrence of torque shock are suppressed when the torque transmission direction is switched. Toque.

本発明の実施形態にかかる無段変速機の模式的な構成図である。It is a schematic block diagram of the continuously variable transmission which concerns on embodiment of this invention. 本発明の実施形態にかかるトルクカム装置の断面図である。It is sectional drawing of the torque cam device which concerns on embodiment of this invention. 本発明の実施形態にかかるトルクカム装置の各トルクカム機構を入力側カム部材と出力側カム部材とで分解して示す斜視図であり、(a)は第1トルクカム機構を示しており、(b)は第2トルクカム機構を示す。It is a perspective view which shows each torque cam mechanism of the torque cam device which concerns on embodiment of this invention by being disassembled by the input side cam member and the output side cam member, (a) shows the 1st torque cam mechanism, (b). Indicates a second torque cam mechanism. 図2において、二点鎖線Xで囲繞した部分を示す拡大図である。FIG. 2 is an enlarged view showing a portion surrounded by the alternate long and short dash line X. 図2において、Y−Y線で示す矢視断面図である。FIG. 2 is a cross-sectional view taken along the line YY.

以下、図面を参照して本発明にかかるトルクカム装置及びこのトルクカム装置を装備する車両用の無段変速機の実施形態を説明する。なお、ここでは、車両が電気モータを駆動源とする電気自動車の場合を例示するが、車両の駆動源はエンジンであってもよく、また、車両はエンジンと電気モータとを駆動源とするハイブリッド車であってもよい。また、以下に示す実施形態はあくまでも例示に過ぎず、以下の実施形態で明示しない種々の変形や技術の適用を排除する意図はない。かかる実施形態を部分的に用いて実施したり、一部を変更して実施したり、同等の機能を有する他の機構や装置に置き換えて実施したりすることができるものである。 Hereinafter, embodiments of the torque cam device according to the present invention and the continuously variable transmission for a vehicle equipped with the torque cam device will be described with reference to the drawings. Although the case where the vehicle is an electric vehicle whose drive source is an electric motor is illustrated here, the drive source of the vehicle may be an engine, and the vehicle is a hybrid whose drive source is an engine and an electric motor. It may be a car. In addition, the embodiments shown below are merely examples, and there is no intention of excluding the application of various modifications and techniques not specified in the following embodiments. Such an embodiment can be partially used, partially modified, or replaced with another mechanism or device having the same function.

図1は本実施形態に係る無段変速機を模式的に示す構成図であり、車両を走行させるための内燃機関(エンジン)、電動モータ等からなる駆動源2には、遊星歯車機構等で構成された前後進切換機構4を介して、無段変速機5のプライマリプーリ6の固定シーブ8に結合された回転軸10が連結されている。この回転軸10には、固定シーブ8のシーブ面に対向してプーリのV字状溝を形成するシーブ面を有する可動シーブ12が、軸方向に摺動可能且つ相対回転不能に配設されている。 FIG. 1 is a configuration diagram schematically showing a continuously variable transmission according to the present embodiment, and a drive source 2 including an internal combustion engine (engine) for running a vehicle, an electric motor, etc. is provided with a planetary gear mechanism or the like. The rotating shaft 10 coupled to the fixed sheave 8 of the primary pulley 6 of the continuously variable transmission 5 is connected via the configured forward / backward switching mechanism 4. A movable sheave 12 having a sheave surface that forms a V-shaped groove of a pulley facing the sheave surface of the fixed sheave 8 is arranged on the rotating shaft 10 so as to be slidable in the axial direction and non-relatively rotatable. There is.

また、無段変速機5のセカンダリプーリ14の固定シーブ16に結合された駆動軸18には、差動機構等を介して図示しない駆動輪が連結され、また、駆動軸18には固定シーブ16のシーブ面に対向してプーリのV字状溝を形成するシーブ面を有する可動シーブ20が、軸方向に摺動可能且つ相対回転不能に配設されている。 Further, a drive wheel (not shown) is connected to the drive shaft 18 coupled to the fixed sheave 16 of the secondary pulley 14 of the continuously variable transmission 5 via a differential mechanism or the like, and the fixed sheave 16 is connected to the drive shaft 18. A movable sheave 20 having a sheave surface that forms a V-shaped groove of the pulley facing the sheave surface of the above is arranged so as to be slidable in the axial direction and non-relatively rotatable.

さらに、セカンダリプーリ14の両シーブ16,20間にはV字状溝を狭める方向に付勢力を付加するスプリング22とトルクカム装置90が介装されている。
また、両プーリ6,14間には、ベルト26が巻き掛けられている。
さらに、スプリング22及びトルクカム装置90はセカンダリプーリ14の推力を調整してベルト26の挟圧力を調整する推力調整機構として機能する。
Further, a spring 22 for applying an urging force in the direction of narrowing the V-shaped groove and a torque cam device 90 are interposed between the sheaves 16 and 20 of the secondary pulley 14.
A belt 26 is wound between the pulleys 6 and 14.
Further, the spring 22 and the torque cam device 90 function as a thrust adjusting mechanism for adjusting the thrust of the secondary pulley 14 to adjust the pinching pressure of the belt 26.

なお、図1には、プライマリプーリ6,セカンダリプーリ14及びベルト26について、変速比がロー側の状態とハイ側の状態とを示している。プライマリプーリ6,セカンダリプーリ14の各外側の半部にロー側の状態を示し、各内側の半部にハイ側の状態を示している。ベルト26については、ロー側の状態を実線で示し、ハイ側の状態を破線で示している。但し、破線で示したハイ状態は、プーリとベルトの半径方向の位置関係を示すのみであり、実際のベルト位置がプーリの内側半部に現れることはない。 Note that FIG. 1 shows the gear ratios of the primary pulley 6, the secondary pulley 14 and the belt 26 on the low side and the high side. Each outer half of the primary pulley 6 and the secondary pulley 14 shows the low side state, and each inner half shows the high side state. Regarding the belt 26, the state on the low side is shown by a solid line, and the state on the high side is shown by a broken line. However, the high state shown by the broken line only indicates the positional relationship between the pulley and the belt in the radial direction, and the actual belt position does not appear in the inner half of the pulley.

プライマリプーリ6の可動シーブ12の背面(シーブ面と反対側の面)13側には、可動シーブ12を軸方向に移動して変速比を調整する機械式プーリ移動機構30が配設されている。図1では機械式プーリ移動機構30を極めて簡略化して記載しているが、この機械式プーリ移動機構30は、可動シーブ12に連結された駆動カム42と固定カム44とを有するトルクカム機構40と、アクチュエータとしての電動モータ70からの動力をトルクカム機構40に伝達するための2つの動力伝達機構50,60とを備えている。 On the back surface (the surface opposite to the sheave surface) 13 side of the movable sheave 12 of the primary pulley 6, a mechanical pulley moving mechanism 30 that moves the movable sheave 12 in the axial direction to adjust the gear ratio is arranged. .. Although the mechanical pulley moving mechanism 30 is described in an extremely simplified manner in FIG. 1, the mechanical pulley moving mechanism 30 includes a torque cam mechanism 40 having a drive cam 42 and a fixed cam 44 connected to the movable sheave 12. It is provided with two power transmission mechanisms 50 and 60 for transmitting power from the electric motor 70 as an actuator to the torque cam mechanism 40.

本実施形態にかかるトルクカム装置90は、このような無段変速機のセカンダリプーリ14に推力発生機構として装備される。
以下、トルクカム装置90について説明する。
The torque cam device 90 according to the present embodiment is mounted on the secondary pulley 14 of such a continuously variable transmission as a thrust generating mechanism.
Hereinafter, the torque cam device 90 will be described.

図1〜3に示すように、本実施形態のトルクカム装置90は、入力回転要素としてのセカンダリプーリ14の可動シーブ20と、出力回転要素としてのセカンダリプーリ14の固定シーブ16及び回転軸18との間に介装されている。本トルクカム装置90は、入力回転要素である可動シーブ20から出力回転要素である回転軸18にトルクが順方向に伝達されるドライブ走行時に推力を発生するとともにトルク伝達を行う第1トルクカム機構91と、出力回転要素である回転軸18から入力回転要素である可動シーブ20にトルクが逆方向に伝達されるコースト走行時に推力を発生するとともにトルク伝達を行う第2トルクカム機構92とを、並列に配設して構成されており、第1トルクカム機構91が第2トルクカム機構92の内周側に配設されている。 As shown in FIGS. 1 to 3, the torque cam device 90 of the present embodiment has a movable sheave 20 of the secondary pulley 14 as an input rotating element, a fixed sheave 16 of the secondary pulley 14 as an output rotating element, and a rotating shaft 18. It is intervened in between. The torque cam device 90 includes a first torque cam mechanism 91 that generates thrust and transmits torque during drive travel in which torque is forwardly transmitted from the movable sheave 20 which is an input rotating element to the rotating shaft 18 which is an output rotating element. , A second torque cam mechanism 92 that generates thrust and transmits torque during coastal travel in which torque is transmitted in the opposite direction from the rotating shaft 18 that is the output rotating element to the movable sheave 20 that is the input rotating element is arranged in parallel. The first torque cam mechanism 91 is arranged on the inner peripheral side of the second torque cam mechanism 92.

第1トルクカム機構91は、セカンダリプーリ14の可動シーブ20に固定された円筒状(筒状体)の第1入力側カム部材91Aと、回転軸18に後に詳述する切替機構80を介して連結可能に設けられた円筒状(筒状体)の第1出力側カム部材91Bとを有しており、図3(a)に示すように第1入力側カム部材91Aは、一端(図中上端)を可動シーブ20に固定され、他端に螺旋状の第1駆動カム斜面91aを有している。 The first torque cam mechanism 91 is connected to the cylindrical (cylindrical body) first input side cam member 91A fixed to the movable sheave 20 of the secondary pulley 14 via the switching mechanism 80 described in detail later on the rotating shaft 18. It has a cylindrical (cylindrical body) first output side cam member 91B that can be provided, and as shown in FIG. 3A, the first input side cam member 91A has one end (upper end in the drawing). ) Is fixed to the movable sheave 20, and has a spiral first drive cam slope 91a at the other end.

一方、第1出力側カム部材91Bには、一端に第1駆動カム斜面91aに対向する螺旋状の第1被駆動カム斜面91bが形成され、他端に、周方向に沿って間隙を存して配設された4つの連結部材91Cを介して円環状の第1クラッチ部材91Dが連結されている。第1クラッチ部材91Dの外周面には、前記切替機構80に噛合できるようにスプライン歯91E(図4参照)が形成されている。 On the other hand, the first output side cam member 91B is formed with a spiral first driven cam slope 91b facing the first driven cam slope 91a at one end, and has a gap at the other end along the circumferential direction. The annular first clutch member 91D is connected via the four connecting members 91C arranged therein. Spline teeth 91E (see FIG. 4) are formed on the outer peripheral surface of the first clutch member 91D so that they can mesh with the switching mechanism 80.

第1駆動カム斜面91aと第1被駆動カム斜面91bとは、同一の角度で周方向に傾斜して延在する螺旋状の斜面であり、これらのカム斜面91a,91bは図示しないボールを介して滑らかに摺接している。ここでは、カム斜面91a,91bは、位相角度を180度ずらせて2個ずつ設けられている。 The first driven cam slope 91a and the first driven cam slope 91b are spiral slopes extending in the circumferential direction at the same angle, and these cam slopes 91a and 91b are via balls (not shown). It slides smoothly. Here, two cam slopes 91a and 91b are provided with the phase angles shifted by 180 degrees.

第1入力側カム部材91Aが図中に矢印A1で示す方向に回転すると、第1駆動カム斜面91aが第1被駆動カム斜面91bに圧接しながら第1入力側カム部材91Aから第1出力側カム部材91Bに回転トルクが伝達される。このとき、第1駆動カム斜面91aと第1被駆動カム斜面91bとの間の圧接力は、第1入力側カム部材91Aと第1出力側カム部材91Bとを軸方向に離隔させる方向に働くが、第1出力側カム部材91Bの他端は、後に詳述するように、回転軸18に対して軸方向への相対移動不可となっているので、前記圧接力が可動シーブ20に加わる推力となる。可動シーブ20にはこの推力に対するベルト26からの反力が加わるため、第1入力側カム部材91Aと第1出力側カム部材91Bとの全長は、この推力がバランスする長さになる。 When the first input side cam member 91A rotates in the direction indicated by the arrow A1 in the drawing, the first drive cam slope 91a comes into pressure contact with the first driven cam slope 91b from the first input side cam member 91A to the first output side. Rotational torque is transmitted to the cam member 91B. At this time, the pressure contact force between the first driven cam slope 91a and the first driven cam slope 91b acts in the direction of axially separating the first input side cam member 91A and the first output side cam member 91B. However, as will be described in detail later, the other end of the first output side cam member 91B cannot move relative to the rotating shaft 18 in the axial direction, so that the pressure contact force is applied to the movable sheave 20. It becomes. Since the reaction force from the belt 26 with respect to this thrust is applied to the movable sheave 20, the total length of the first input side cam member 91A and the first output side cam member 91B has a length that balances this thrust.

第2トルクカム機構92は、セカンダリプーリ14の可動シーブ20に固定された円筒状(筒状体)の第2入力側カム部材92Aと、回転軸18に切替機構80を介して連結可能に設けられた円筒状(筒状体)の第2出力側カム部材92Bとを有しており、図3(b)に示すように第2入力側カム部材92Aは、一端(図中上端)を可動シーブ20に固定され、他端に螺旋状の第2駆動カム斜面92aを有している。 The second torque cam mechanism 92 is provided so as to be connectable to the rotary shaft 18 via the switching mechanism 80 with the cylindrical (cylindrical) second input side cam member 92A fixed to the movable sheave 20 of the secondary pulley 14. It has a cylindrical (cylindrical body) second output side cam member 92B, and as shown in FIG. 3B, the second input side cam member 92A has a movable sheave at one end (upper end in the drawing). It is fixed to 20 and has a spiral second drive cam slope 92a at the other end.

一方、第2出力側カム部材92Bには、一端に第2駆動カム斜面92aに対向する螺旋状の第2被駆動カム斜面92bが形成され、他端に大径の第2クラッチ部材92Dが形成されている。第2クラッチ部材92Dの外周面には、第1クラッチ部材91Dと同様に、切替機構80に噛合できるようにスプライン歯92E(図4参照)が形成されている。 On the other hand, the second output side cam member 92B is formed with a spiral second driven cam slope 92b facing the second drive cam slope 92a at one end and a large diameter second clutch member 92D at the other end. Has been done. Similar to the first clutch member 91D, spline teeth 92E (see FIG. 4) are formed on the outer peripheral surface of the second clutch member 92D so that they can mesh with the switching mechanism 80.

第2被駆動カム斜面92aと第2駆動カム斜面92bとは、同一の角度で周方向に傾斜して延在する螺旋状の斜面であり、これらのカム斜面92a,92bは図示しないボールを介して滑らかに摺接している。ここでは、カム斜面92a,92bは、位相角度を180度ずらせて2個ずつ設けられている。 The second driven cam slope 92a and the second driven cam slope 92b are spiral slopes extending in the circumferential direction at the same angle, and these cam slopes 92a and 92b are via balls (not shown). It slides smoothly. Here, two cam slopes 92a and 92b are provided with the phase angles shifted by 180 degrees.

第2出力側カム部材92Bが図中に矢印A2で示す方向に回転すると、第2駆動カム斜面92bが第2被駆動カム斜面92aに圧接しながら第2出力側カム部材92Bから第2で入力側カム部材92Aに回転トルクが伝達される。このとき、第2駆動カム斜面92bと第2被駆動カム斜面92aとの間の圧接力は、第2入力側カム部材92Aと第2出力側カム部材92Bとを軸方向に離隔させる方向に働くが、第2出力側カム部材92Bの他端は回転軸18に対して軸方向への相対移動不可となっているので、前記圧接力が可動シーブ20に加わる推力となる。可動シーブ20にはこの推力に対するベルト26からの反力が加わるため、第2入力側カム部材92Aと第2出力側カム部材92Bとの全長は、この推力がバランスする長さになる。 When the second output side cam member 92B rotates in the direction indicated by the arrow A2 in the drawing, the second drive cam slope 92b is pressed against the second driven cam slope 92a and input from the second output side cam member 92B. Rotational torque is transmitted to the side cam member 92A. At this time, the pressure contact force between the second driven cam slope 92b and the second driven cam slope 92a acts in the direction of axially separating the second input side cam member 92A and the second output side cam member 92B. However, since the other end of the second output side cam member 92B cannot move relative to the rotating shaft 18 in the axial direction, the pressure contact force becomes a thrust force applied to the movable sheave 20. Since the reaction force from the belt 26 with respect to this thrust is applied to the movable sheave 20, the total length of the second input side cam member 92A and the second output side cam member 92B has a length that balances this thrust.

図1,2に示すように、トルクカム装置90は、さらに、2つのトルクカム機構91,92と出力回転要素としての回転軸18との間に介装された切替機構80と遊星歯車機構100とを備えている。出力回転要素としての回転軸18には、その出力側端部(図中左端部)に拡径部18Aと、拡径部18Aの外周部から可動シーブ20方向へ延設された連結ドラム18Bが形成されており、切替機構80と遊星歯車機構100とは連結ドラム18Bの内周側に配設されている。 As shown in FIGS. 1 and 2, the torque cam device 90 further includes a switching mechanism 80 and a planetary gear mechanism 100 interposed between the two torque cam mechanisms 91 and 92 and the rotating shaft 18 as an output rotating element. I have. The rotating shaft 18 as an output rotating element includes a diameter-expanded portion 18A at its output side end (left end in the figure) and a connecting drum 18B extending from the outer peripheral portion of the diameter-expanded portion 18A in the movable sheave 20 direction. The switching mechanism 80 and the planetary gear mechanism 100 are arranged on the inner peripheral side of the connecting drum 18B.

図4に示すように、切替機構80は、フォーク部材82とリング部材84とを備えている。
フォーク部材82は、回転軸18と同軸の円筒からなる胴部82aと、胴部82aの軸方向中間部から外方に向かって突設され、外周面にスプライン歯82bが形成された円環状の脚部82cと、胴部82aの軸方向両端部から内方に向かって突設され、内周面にスプライン歯82d,82fが形成された2つの腕部82e,82gと、胴部82aの軸方向中間部から内方に向かって突設された円環状の係合部82hとを備えている。そして、フォーク部材82は、連結ドラム18Bの内周面に形成されたスプライン歯18Cに脚部82cのスプライン歯82bを噛合させることにより、連結ドラム18B(即ち、回転軸18)に対して相対回転不能且つ軸方向に相対移動可能に支持されている。
As shown in FIG. 4, the switching mechanism 80 includes a fork member 82 and a ring member 84.
The fork member 82 is an annular shape having a body portion 82a formed of a cylinder coaxial with the rotating shaft 18 and a body portion 82a projecting outward from the axially intermediate portion of the body portion 82a and having spline teeth 82b formed on the outer peripheral surface. Two arm portions 82e, 82g, which are projected inward from both ends of the leg portion 82c and the body portion 82a in the axial direction and have spline teeth 82d, 82f formed on the inner peripheral surface, and a shaft of the body portion 82a. It is provided with an annular engaging portion 82h projecting inward from the intermediate portion in the direction. Then, the fork member 82 rotates relative to the connecting drum 18B (that is, the rotation shaft 18) by engaging the spline teeth 82b of the leg portion 82c with the spline teeth 18C formed on the inner peripheral surface of the connecting drum 18B. It is supported so that it is impossible and can move relative to the axial direction.

リング部材84は、外周面に係合部82hに嵌合する円環状の溝84aが形成された円筒状の胴部84bと、胴部84bの軸方向両端部から内方に向かって突設され、内周面にスプライン歯84d,84fが形成された2つの腕部84e,84gとを備えている。また、リング部材84は、溝84aが係合部82hに嵌合することにより、相対回転可能且つ軸方向への相対移動不能に、フォーク部材82に支持されている。 The ring member 84 is projected inward from both ends of the cylindrical body portion 84b in which an annular groove 84a fitted to the engaging portion 82h is formed on the outer peripheral surface in the axial direction. It is provided with two arm portions 84e and 84g having spline teeth 84d and 84f formed on the inner peripheral surface. Further, the ring member 84 is supported by the fork member 82 so as to be relatively rotatable and unable to move in the axial direction by fitting the groove 84a into the engaging portion 82h.

一方、遊星歯車機構100は、リングギヤ100Rとピニオンギヤ100Pとサンギヤ100Sとピニオンギヤ100Pを支持するキャリア100Cとを有する単純遊星歯車で構成されており、リングギヤ100Rが連結ドラム18Bに固定的に連結され、キャリア100cがスプライン機構18Aを介して可動プーリ20に連結された回転支持軸18Bの軸端(図中左端)に相対回転不能且つ軸方向への相対移動可能に支持され、これによって可動プーリ20の軸方向移動が許容されている。 On the other hand, the planetary gear mechanism 100 is composed of a simple planetary gear having a ring gear 100R, a pinion gear 100P, a sun gear 100S, and a carrier 100C supporting the pinion gear 100P. The ring gear 100R is fixedly connected to the connecting drum 18B, and the carrier The 100c is supported by the shaft end (left end in the figure) of the rotary support shaft 18B connected to the movable pulley 20 via the spline mechanism 18A so as to be relatively non-rotatable and relatively movable in the axial direction, whereby the shaft of the movable pulley 20 is supported. Directional movement is allowed.

また、サンギヤ100Sには、サンギヤ100Sを切替機構80に連結するための連結軸120が結合されており、連結軸120には、その軸方向中間部に外方へ向かって突設された円板状のフランジ120Aと、軸端部に外方へ向かって突設され外周面にスプライン歯120C(図4参照)が形成された円盤状の第3クラッチ部材120Bとが設けられている。 Further, a connecting shaft 120 for connecting the sun gear 100S to the switching mechanism 80 is coupled to the sun gear 100S, and a disk projecting outward from the axially intermediate portion of the connecting shaft 120. A disk-shaped third clutch member 120B is provided with a shaped flange 120A and a disk-shaped third clutch member 120B projecting outward from the shaft end and having spline teeth 120C (see FIG. 4) formed on the outer peripheral surface.

さらに、図5に示すように、第3クラッチ部材120Bには、その径方向中間部における同一径上に間隔を存して4つの円弧状の孔120Dが穿設されており、孔120Dには第1出力側カム部材91Bの連結部材91Cが貫通している。
図5から明確なように、孔120Dの円弧長は連結部材91Cの円弧長より長く設定されているので、連結部材91Cは孔120Dの円弧長の範囲内において移動可能である。
なお、孔120Dの円弧長と連結部材91Cの円弧長との関係は、連結部材91Cが孔120Dの何れか一方の内壁に当接または近接したときに、第1入力側カム部材91Aと第1出力側カム部材91Bとが当接状態(即ち、両カム部材91A,91B間のバックラッシがなくなる状態)となる長さ比とすることが好ましい。
Further, as shown in FIG. 5, the third clutch member 120B is provided with four arcuate holes 120D having intervals on the same diameter in the radial intermediate portion thereof, and the holes 120D are bored. The connecting member 91C of the first output side cam member 91B penetrates.
As is clear from FIG. 5, since the arc length of the hole 120D is set longer than the arc length of the connecting member 91C, the connecting member 91C can move within the range of the arc length of the hole 120D.
The relationship between the arc length of the hole 120D and the arc length of the connecting member 91C is such that when the connecting member 91C abuts or approaches the inner wall of either one of the holes 120D, the first input side cam member 91A and the first It is preferable that the length ratio is such that the output side cam member 91B is in contact with the cam member 91B (that is, the backlash between the cam members 91A and 91B is eliminated).

図2に示すように、拡径部18Aの内側面18Cとキャリア100Cの一側面100C1との間、キャリア100Cの他側面100C2と連結軸120の軸端面との間、フランジ120Aの側面と第1クラッチ部材91Dの側面との間および第3クラッチ部材120Bの側面と第2クラッチ部材92Dの側面との間には、それぞれスラスト軸受25A,25B,25C,25Dが介装されており、この構成により、第1及び第2出力側カム部材91B,92Bが、出力回転要素である回転軸18に対して軸方向への相対移動不能に支持されることとなる。 As shown in FIG. 2, between the inner side surface 18C of the enlarged diameter portion 18A and one side surface 100C1 of the carrier 100C, between the other side surface 100C2 of the carrier 100C and the shaft end surface of the connecting shaft 120, the side surface of the clutch 120A and the first surface. Thrust bearings 25A, 25B, 25C, and 25D are interposed between the side surface of the clutch member 91D and between the side surface of the third clutch member 120B and the side surface of the second clutch member 92D, respectively. The first and second output side cam members 91B and 92B are supported so as not to be relatively movable in the axial direction with respect to the rotation shaft 18 which is an output rotation element.

ここで、切替機構82の作動態様を説明する。
フォーク部材82は図示しないアクチュエータにより軸方向に摺動駆動され、前記順方向へのトルク伝達が行われる状態、即ち、車両のドライブ走行状態では、図4に示す位置に駆動されて、腕部82gのスプライン歯82fを第1クラッチ部材91Dのスプライン歯91Eに噛合させて第1出力側カム部材91Bを連結ドラム18B(回転軸18)に相対回転不能に連結すると共にリング部材84のスプライン歯84fを第3クラッチ部材120Bのスプライン歯120Cに噛合させ、スプライン歯84dを第2クラッチ部材92Dのスプライン歯92Eに噛合させて第2出力側カム部材92Bをサンギヤ100Sに連結する。
Here, the operation mode of the switching mechanism 82 will be described.
The fork member 82 is slidably driven in the axial direction by an actuator (not shown), and in a state in which torque is transmitted in the forward direction, that is, in a driving running state of the vehicle, the fork member 82 is driven to the position shown in FIG. The spline teeth 82f of the first clutch member 91D are meshed with the spline teeth 91E of the first clutch member 91D to connect the first output side cam member 91B to the connecting drum 18B (rotating shaft 18) so as not to rotate relative to each other, and the spline teeth 84f of the ring member 84 are connected. The spline tooth 120C of the third clutch member 120B is meshed, the spline tooth 84d is meshed with the spline tooth 92E of the second clutch member 92D, and the second output side cam member 92B is connected to the sun gear 100S.

この状態では、第1トルクカム機構91がトルク伝達を実行し、第2トルクカム機構92はトルク伝達に寄与しないので、本実施態様のような構成を備えない従来のトルクカム装置の構成では、第2出力側カム部材92Bが自由状態となり、引き摺り摩擦等の影響により回転が遅くなって第2入力側カム部材92Aから離間してバックラッシが大きくなってしまう。
一方、本実施態様の構成によれば、第2出力側カム部材92Bがサンギヤ100Sに連結されるので、第2出力側カム部材92Bの回転が遊星歯車機構100のギヤ比に応じた分だけ第2入力側カム部材92Aの回転に対して増速され、両カム部材92A,92Bを近接させてバックラッシの発生を抑制または解消することができる。
In this state, the first torque cam mechanism 91 executes torque transmission, and the second torque cam mechanism 92 does not contribute to torque transmission. Therefore, in the configuration of the conventional torque cam device that does not have the configuration as in this embodiment, the second output The side cam member 92B is in a free state, the rotation is slowed down due to the influence of drag friction and the like, and the backlash is increased apart from the second input side cam member 92A.
On the other hand, according to the configuration of the present embodiment, since the second output side cam member 92B is connected to the sun gear 100S, the rotation of the second output side cam member 92B is equal to the gear ratio of the planetary gear mechanism 100. 2 The speed is increased with respect to the rotation of the input side cam member 92A, and both cam members 92A and 92B can be brought close to each other to suppress or eliminate the occurrence of backlash.

また、前記逆方向へのトルク伝達が行われる状態、即ち、車両のコースト走行状態では、図4に示す位置から左方へ移動されて、腕部82eのスプライン歯82dを第2クラッチ部材92Dのスプライン歯92Eに噛合させて第2出力側カム部材92Bを連結ドラム18B(回転軸18)に相対回転不能に連結すると共にリング部材84のスプライン歯84dを第3クラッチ部材120Bのスプライン歯120Cに噛合させ、スプライン歯84fを第1クラッチ部材91Dのスプライン歯91Eに噛合させて第1出力側カム部材91Bをサンギヤ100Sに連結する。 Further, in the state where the torque is transmitted in the opposite direction, that is, in the coast running state of the vehicle, the spline teeth 82d of the arm portion 82e are moved to the left from the position shown in FIG. 4, and the spline teeth 82d of the arm portion 82e are moved to the second clutch member 92D. The second output side cam member 92B is meshed with the spline tooth 92E so as to be non-rotatably connected to the connecting drum 18B (rotating shaft 18), and the spline tooth 84d of the ring member 84 is meshed with the spline tooth 120C of the third clutch member 120B. Then, the spline teeth 84f are engaged with the spline teeth 91E of the first clutch member 91D, and the first output side cam member 91B is connected to the sun gear 100S.

この状態は、第2トルクカム機構92がトルク伝達を実行し、第1トルクカム機構91がトルク伝達に寄与しない状態であるが、第1出力側カム部材91Bがサンギヤ100Sに連結されて増速されるので、第1入力側カム部材91Aと第1出力側カム部材91Bとの間のバックラッシの発生が抑制または解消される。 In this state, the second torque cam mechanism 92 executes torque transmission and the first torque cam mechanism 91 does not contribute to torque transmission, but the first output side cam member 91B is connected to the sun gear 100S to accelerate the speed. Therefore, the occurrence of backlash between the first input side cam member 91A and the first output side cam member 91B is suppressed or eliminated.

次に、本実施形態によるトルクカム装置90の作動について説明する。
無段変速機5では、車両のドライブ走行時に、ベルト26からセカンダリプーリ14に伝達される入力トルクが強まると、セカンダリプーリ14のベルト挟圧力が不足し、セカンダリプーリ14の固定シーブ18がベルト26に対して滑りを生じる。ただし、回転軸18と相対動可能な可動プーリ20はベルト26に追従するので、固定シーブ16は可動シーブ20に対して回転位相遅れを生じる。
Next, the operation of the torque cam device 90 according to the present embodiment will be described.
In the continuously variable transmission 5, when the input torque transmitted from the belt 26 to the secondary pulley 14 is strengthened during driving of the vehicle, the belt pinching pressure of the secondary pulley 14 becomes insufficient, and the fixed sheave 18 of the secondary pulley 14 becomes the belt 26. Causes slippage. However, since the movable pulley 20 that can move relative to the rotating shaft 18 follows the belt 26, the fixed sheave 16 causes a rotational phase lag with respect to the movable sheave 20.

このときには、第1トルクカム機構91の第1出力側カム部材91Bが、切替機構80を介して回転軸16に駆動連結されるので、可動シーブ20と一体回転する第1入力側カム部材91Aは、図示しないボールを介して第1駆動カム斜面91aと第1被駆動カム斜面91bとをスライドさせながら、固定シーブ16と一体回転する第1出力側カム部材91Bよりも先行するように相対回転しつつ、第1出力側カム部材91Bに対して軸方向に離隔するように(つまり、第1入力側カム部材91Aと第1出力側カム部材91Bとの全長を拡大する方向に)移動して可動シーブ20を固定シーブ16に接近させる。この結果、セカンダリプーリ14のV溝の溝幅が狭まってセカンダリプーリ14の推力が強まるため、ベルト挟圧力が強まり、固定シーブ16の滑りが解消される。 At this time, since the first output side cam member 91B of the first torque cam mechanism 91 is driven and connected to the rotating shaft 16 via the switching mechanism 80, the first input side cam member 91A that rotates integrally with the movable sheave 20 While sliding the first driven cam slope 91a and the first driven cam slope 91b via a ball (not shown), while rotating relative to the first output side cam member 91B which rotates integrally with the fixed sheave 16. , A movable sheave that moves so as to be axially separated from the first output side cam member 91B (that is, in a direction that expands the total length of the first input side cam member 91A and the first output side cam member 91B). Bring 20 closer to the fixed sheave 16. As a result, the groove width of the V groove of the secondary pulley 14 is narrowed and the thrust of the secondary pulley 14 is strengthened, so that the belt pinching pressure is strengthened and the slip of the fixed sheave 16 is eliminated.

一方、車両のコースト走行時に、駆動源が負の入力トルク(制動トルク)を作用する状態では、固定シーブ16の回転位相遅れは解消され、負の入力トルクに対してセカンダリプーリ14のベルト挟圧力が不足すると、固定シーブ16が可動シーブ20に対して回転位相進みを生じる(逆に言えば、可動シーブ20が固定シーブ16に対して回転位相遅れを生じる)。 On the other hand, when the drive source acts on a negative input torque (braking torque) when the vehicle is traveling on the coast, the rotation phase delay of the fixed sheave 16 is eliminated, and the belt pinching pressure of the secondary pulley 14 with respect to the negative input torque. If the amount is insufficient, the fixed sheave 16 causes a rotational phase advance with respect to the movable sheave 20 (conversely, the movable sheave 20 causes a rotational phase delay with respect to the fixed sheave 16).

このときには、第2トルクカム機構92の第2出力側カム部材92Bが回転軸18に駆動連結されるので、固定シーブ16と一体回転する第2出力側カム部材92Bは、図示しないボールを介して第2駆動カム斜面92bと第2被駆動カム斜面91bとをスライドさせながら、固定シーブ16と一体回転する第1出力側カム部材92Bよりも先行するように相対回転しつつ、第2入力側カム部材92Aに対して軸方向に離隔するように(つまり、第2入力側カム部材92Aと第2出力側カム部材92Bとの全長を拡大する方向に)移動して可動シーブ20を固定シーブ16に接近させる。この結果、セカンダリプーリ14のV溝の溝幅が狭まってセカンダリプーリ14の推力が強まるため、ベルト挟圧力が強まり、固定シーブ16の滑りが解消される。 At this time, since the second output side cam member 92B of the second torque cam mechanism 92 is driven and connected to the rotating shaft 18, the second output side cam member 92B that rotates integrally with the fixed sheave 16 is placed via a ball (not shown). While sliding the 2 drive cam slope 92b and the 2nd driven cam slope 91b, the 2nd input side cam member rotates relative to the 1st output side cam member 92B which rotates integrally with the fixed sheave 16. The movable sheave 20 approaches the fixed sheave 16 by moving so as to be axially separated from the 92A (that is, in the direction of expanding the total length of the second input side cam member 92A and the second output side cam member 92B). Let me. As a result, the groove width of the V groove of the secondary pulley 14 is narrowed and the thrust of the secondary pulley 14 is strengthened, so that the belt pinching pressure is strengthened and the slip of the fixed sheave 16 is eliminated.

なお、車両の停止時等には、駆動トルクも制動トルクも作用しないため、トルクカム装置90によるプーリの推力は加えられない。本装置では、可動プーリ20を固定プーリ16に接近する方向に付勢するコイルスプリング22が装備されているので、この車両の発進時等の初期駆動時にも、ベルト滑りを防止してベルト26を確実にクランプすることができる。 Since neither the driving torque nor the braking torque acts when the vehicle is stopped, the thrust of the pulley by the torque cam device 90 is not applied. Since the present device is equipped with a coil spring 22 that urges the movable pulley 20 in the direction approaching the fixed pulley 16, the belt 26 is prevented from slipping even during the initial drive such as when the vehicle starts. It can be securely clamped.

本実施形態にかかる無段変速機5は、上述のように構成されているので、トルクカム装置90を利用して、セカンダリプーリ14に推力を与えながら適宜の変速比で駆動トルクを伝達する。 Since the continuously variable transmission 5 according to the present embodiment is configured as described above, the torque cam device 90 is used to transmit the drive torque at an appropriate gear ratio while applying thrust to the secondary pulley 14.

そして、本トルクカム装置90では、トルク伝達に寄与していないトルクカム機構において、出力側カム部材を遊星歯車機構のサンギヤに連結し、同遊星歯車機構のキャリアに常時連結された入力側カム部材に対して増速回転させるので、入力側カム部材と出力側カム部材との間のバックラッシの発生が抑制または解消される効果を得ることができる。
このため、例えば、車両の走行状態がドライブ走行からコースト走行に切り替わった場合では、切替機構80が第2出力側カム部材92Bを回転軸18に駆動連結して第2トルクカム機構をトルク伝達状態とするときに、第2入力側カム部材92Aと第2出力側カム部材92B間のバックラッシが抑制または解消されているので、切り替えに伴うトルクショックを抑制または防止できる。また、走行状態がコースト走行からドライブ走行に切り替わる場合でも、同様にトルクショックの抑制または防止が可能である。
In the torque cam device 90, in the torque cam mechanism that does not contribute to torque transmission, the output side cam member is connected to the sun gear of the planetary gear mechanism, and the input side cam member is always connected to the carrier of the planetary gear mechanism. Since the speed is increased and rotated, the effect of suppressing or eliminating the occurrence of backlash between the input side cam member and the output side cam member can be obtained.
Therefore, for example, when the traveling state of the vehicle is switched from the driving traveling to the coast traveling, the switching mechanism 80 drives and connects the second output side cam member 92B to the rotating shaft 18 to bring the second torque cam mechanism into the torque transmission state. Since the backlash between the second input side cam member 92A and the second output side cam member 92B is suppressed or eliminated, the torque shock associated with the switching can be suppressed or prevented. Further, even when the running state is switched from the coast running to the driving running, the torque shock can be similarly suppressed or prevented.

以上、実施形態について説明したが、本発明は各実施形態を適宜変形して実施することができる。
例えば上記実施形態では、セカンダリプーリ側に本トルクカム装置を装備しているが、プライマリプーリの側に本トルクカム装置を装備してもよい。
また、本発明のトルクカム装置及びこれを備えた無段変速機は、車両用の変速機として用いるのに適しているが、その他の種々の動力伝達系にも適用できる。
Although the embodiments have been described above, the present invention can be implemented by appropriately modifying each embodiment.
For example, in the above embodiment, the torque cam device is provided on the secondary pulley side, but the torque cam device may be provided on the primary pulley side.
Further, the torque cam device of the present invention and the continuously variable transmission provided with the torque cam device are suitable for use as a transmission for a vehicle, but can also be applied to various other power transmission systems.

2 駆動源
5 無段変速機
6 プライマリプーリ
14 セカンダリプーリ
16 固定プーリ(出力回転要素)
20 可動プーリ(入力回転要素)
80 切替機構
82 フォーク部材
84 リング部材
90 トルクカム装置
91 第1トルクカム機構
91A 第1入力側カム部材
91a 第1駆動カム斜面
91B 第1出力側カム部材
91b 第1被駆動カム斜面
92 第2トルクカム機構
92A 第2入力側カム部材
92a 第2被駆動カム斜面
92B 第2出力側カム部材
92b 第2駆動カム斜面
100 遊星歯車機構
100C キャリア(ピニオンキャリア)
100R リングギヤ
100S サンギヤ
2 Drive source 5 Continuously variable transmission 6 Primary pulley 14 Secondary pulley 16 Fixed pulley (output rotating element)
20 Movable pulley (input rotating element)
80 Switching mechanism 82 Fork member 84 Ring member 90 Torque cam device 91 1st torque cam mechanism 91A 1st input side cam member 91a 1st drive cam slope 91B 1st output side cam member 91b 1st driven cam slope 92 2nd torque cam mechanism 92A 2nd input side cam member 92a 2nd driven cam slope 92B 2nd output side cam member 92b 2nd drive cam slope 100 Planetary gear mechanism 100C Carrier (pinion carrier)
100R ring gear 100S sun gear

Claims (3)

入力回転要素に連結され、前記入力回転要素から出力回転要素へ順方向にトルクを伝達する際の入力側となり、螺旋状の第1駆動カム斜面を有する第1入力側カム部材と、前記出力回転要素に対して軸方向移動不能且つ相対回転可能に支持され、前記順方向にトルクを伝達する際の出力側となり、前記第1駆動カム斜面と伝達トルクに応じた力で摺接する螺旋状の第1被駆動カム斜面を有する第1出力側カム部材とからなる第1トルクカム機構と、
前記出力回転要素に対して軸方向移動不能且つ相対回転可能に支持され、前記出力回転要素から前記入力回転要素へ逆方向にトルクを伝達する際の出力側となり、螺旋状の第2駆動カム斜面を有する第2出力側カム部材と、前記入力回転要素に連結され、前記逆方向にトルクを伝達する際の入力側となり、前記第2駆動カム斜面と伝達トルクに応じた力で摺接する螺旋状の第2被駆動カム斜面を有する第2入力側カム部材とからなる第2トルクカム機構と、
前記入力回転要素と出力回転要素との間に介装され、前記入力回転要素に相対回転不能且つ軸方向に相対移動可能に連結されたピニオンキャリアと、前記出力回転要素に連結されたリングギヤと、サンギヤとからなる遊星歯車機構と、
前記順方向にトルク伝達するときには前記第1出力側カム部材を前記出力回転要素に相対回転不能に連結すると共に前記第2出力側カム部材と前記サンギヤとを連結し、前記逆方向にトルク伝達するときには前記第2出力側カム部材を前記出力回転要素に相対回転不能に連結すると共に前記第1出力側カム部材と前記サンギヤとを連結する切替機構とを備えている
ことを特徴とするトルクカム装置。
A first input side cam member which is connected to an input rotation element and serves as an input side when torque is forwardly transmitted from the input rotation element to the output rotation element and has a spiral first drive cam slope, and the output rotation. A spiral first that is supported so that it cannot move in the axial direction and can rotate relative to the element, becomes the output side when torque is transmitted in the forward direction, and is in sliding contact with the first drive cam slope with a force corresponding to the transmission torque. 1 A first torque cam mechanism composed of a first output side cam member having a driven cam slope, and
It is supported so that it cannot move in the axial direction and can rotate relative to the output rotating element, and serves as an output side when torque is transmitted from the output rotating element to the input rotating element in the opposite direction, and is a spiral second drive cam slope. A spiral shape that is connected to the input rotating element and serves as an input side when transmitting torque in the opposite direction, and is in sliding contact with the second drive cam slope with a force corresponding to the transmission torque. A second torque cam mechanism composed of a second input side cam member having a second driven cam slope of
A pinion carrier interposed between the input rotating element and the output rotating element, which is connected to the input rotating element so as to be relatively non-rotatable and axially movable, and a ring gear connected to the output rotating element. A planetary gear mechanism consisting of a sun gear and
When torque is transmitted in the forward direction, the first output side cam member is connected to the output rotating element so as not to rotate relative to the output rotating element, and the second output side cam member and the sun gear are connected to transmit torque in the opposite direction. The torque cam device is characterized by comprising a switching mechanism for connecting the second output side cam member to the output rotating element so as not to rotate relative to the output rotating element and connecting the first output side cam member and the sun gear.
前記切替機構が、
前記出力回転要素に相対回転不能且つ軸方向移動可能に連結されると共に軸方向移動によって前記第1出力側カム部材と第2出力側カム部材との何れか一方の出力側カム部材に連結され、他方の出力側カム部材を解放するフォーク部材と、
前記フォーク部材に相対回転可能且つ軸方向相対移動不能に支持されると共に前記他方の出力側カム部材を前記サンギヤに連結する噛合いリング部材とを備えている
ことを特徴とする請求項1記載のトルクカム装置。
The switching mechanism
It is connected to the output rotating element so as to be relatively non-rotatable and axially movable, and is connected to the output-side cam member of either the first output-side cam member or the second output-side cam member by axial movement. A fork member that releases the other output side cam member,
The first aspect of the present invention, wherein the fork member is supported so as to be relatively rotatable and relatively immovable in the axial direction, and is provided with a meshing ring member for connecting the other output side cam member to the sun gear. Torque cam device.
プライマリプーリと、
セカンダリプーリと、
前記プライマリプーリ及び前記セカンダリプーリに掛け回されたベルト状部材と、
前記プライマリプーリに推力を付与する第1推力付与機構と、
前記セカンダリプーリに推力を付与する第2推力付与機構とを備え、
前記第1推力付与機構及び前記第2推力付与機構の少なくともいずれか一方に、請求項1又は2記載のトルクカム装置が装備されている
ことを特徴とする無段変速機。
With the primary pulley
With the secondary pulley
The primary pulley and the belt-shaped member hung around the secondary pulley,
A first thrust applying mechanism that applies thrust to the primary pulley,
A second thrust applying mechanism for applying thrust to the secondary pulley is provided.
A continuously variable transmission characterized in that at least one of the first thrust applying mechanism and the second thrust applying mechanism is equipped with the torque cam device according to claim 1 or 2.
JP2017053114A 2017-03-17 2017-03-17 Torque cam device and continuously variable transmission Active JP6791591B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2017053114A JP6791591B2 (en) 2017-03-17 2017-03-17 Torque cam device and continuously variable transmission

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2017053114A JP6791591B2 (en) 2017-03-17 2017-03-17 Torque cam device and continuously variable transmission

Publications (2)

Publication Number Publication Date
JP2018155340A JP2018155340A (en) 2018-10-04
JP6791591B2 true JP6791591B2 (en) 2020-11-25

Family

ID=63716420

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2017053114A Active JP6791591B2 (en) 2017-03-17 2017-03-17 Torque cam device and continuously variable transmission

Country Status (1)

Country Link
JP (1) JP6791591B2 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114483898B (en) * 2020-11-12 2024-02-09 杭州肇鹏科技有限公司 Speed regulating device of stepless speed changer

Also Published As

Publication number Publication date
JP2018155340A (en) 2018-10-04

Similar Documents

Publication Publication Date Title
JP6100388B2 (en) Torque cam device and belt-type continuously variable transmission
JP6015852B2 (en) Vehicle control apparatus and method
JP6791591B2 (en) Torque cam device and continuously variable transmission
US11592100B2 (en) Uniform clamp actuated shift infinitely variable transmission system
JP2008064125A (en) Belt type continuously variable transmission
WO2021179134A1 (en) Transmission device and control method therefor, and steering system and control method therefor
JP3100936B2 (en) V-belt type automatic transmission
JP6791590B2 (en) Torque cam device and continuously variable transmission
JP3201988B2 (en) Power transmission mechanism
JP7040396B2 (en) Vehicle power transmission device
US11293531B2 (en) Automatic transmission and control method of automatic transmission
JP6690004B2 (en) Continuously variable transmission
WO2005078313A1 (en) Continuously variable transmission
KR100444481B1 (en) Multistage Changeable Pulley for Auto Transmission
JP6129675B2 (en) Power transmission mechanism
JP2018179222A (en) Vehicular continuously variable transmission
JP6517688B2 (en) Power transmission
JP6892766B2 (en) Power transmission system for motorcycles
JP6493346B2 (en) Continuously variable transmission for vehicle
JP6529757B2 (en) Power split type continuously variable transmission
JP6575377B2 (en) Continuously variable transmission
JP6368670B2 (en) Transmission mechanism of continuously variable transmission
JP2019015305A (en) Pulley device for stepless transmission, stepless transmission and stepless transmission device
JP5099154B2 (en) Conical friction wheel ring type continuously variable transmission
JP2018096383A (en) Continuously variable transmission

Legal Events

Date Code Title Description
A621 Written request for application examination

Free format text: JAPANESE INTERMEDIATE CODE: A621

Effective date: 20191206

A977 Report on retrieval

Free format text: JAPANESE INTERMEDIATE CODE: A971007

Effective date: 20201027

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: 20201104

A61 First payment of annual fees (during grant procedure)

Free format text: JAPANESE INTERMEDIATE CODE: A61

Effective date: 20201104

R150 Certificate of patent or registration of utility model

Ref document number: 6791591

Country of ref document: JP

Free format text: JAPANESE INTERMEDIATE CODE: R150