WO2016047293A1 - Pulley device - Google Patents

Pulley device Download PDF

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Publication number
WO2016047293A1
WO2016047293A1 PCT/JP2015/072495 JP2015072495W WO2016047293A1 WO 2016047293 A1 WO2016047293 A1 WO 2016047293A1 JP 2015072495 W JP2015072495 W JP 2015072495W WO 2016047293 A1 WO2016047293 A1 WO 2016047293A1
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Prior art keywords
sheave
movable sheave
boss
fixed sheave
fixed
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PCT/JP2015/072495
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French (fr)
Japanese (ja)
Inventor
義夫 今西
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株式会社エクセディ
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Publication of WO2016047293A1 publication Critical patent/WO2016047293A1/en

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    • 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
    • F16H—GEARING
    • F16H9/00—Gearings for conveying rotary motion with variable gear ratio, or for reversing rotary motion, by endless flexible members
    • F16H9/02—Gearings for conveying rotary motion with variable gear ratio, or for reversing rotary motion, by endless flexible members without members having orbital motion
    • F16H9/04—Gearings for conveying rotary motion with variable gear ratio, or for reversing rotary motion, by endless flexible members without members having orbital motion using belts, V-belts, or ropes
    • F16H9/12—Gearings for conveying rotary motion with variable gear ratio, or for reversing rotary motion, by endless flexible members without members having orbital motion using belts, V-belts, or ropes engaging a pulley built-up out of relatively axially-adjustable parts in which the belt engages the opposite flanges of the pulley directly without interposed belt-supporting members

Definitions

  • the present invention relates to a pulley device.
  • a belt type continuously variable transmission is employed (for example, Patent Document 1).
  • This continuously variable transmission includes a drive pulley device, a driven pulley device, and a belt.
  • the belt is suspended between the drive pulley device and the driven pulley device.
  • the drive pulley device is fixed to the engine crankshaft.
  • the drive pulley device has a movable sheave and a fixed sheave.
  • the belt moves toward the outer peripheral side.
  • the movable sheave moves in a direction away from the fixed sheave, the belt moves to the inner peripheral side.
  • the driven pulley device has a fixed sheave and a movable sheave.
  • the movable sheave is disposed so as to be movable toward and away from the fixed sheave.
  • the movable sheave is biased in a direction approaching the fixed sheave by a coil spring. Further, the movable sheave moves in a direction away from the urging force of the coil spring by the pressing force from the belt.
  • the inner peripheral end of the movable sheave of the driven pulley device is pressed in a direction approaching the fixed sheave by a coil spring.
  • the movable sheave is pressed in the direction away from the fixed sheave by the belt on the outer side in the radial direction from the inner peripheral end.
  • a movable sheave may bend in the direction which the outer peripheral edge part of a movable sheave leaves
  • An object of the present invention is to prevent bending of the movable sheave.
  • a pulley apparatus includes a fixed sheave, a movable sheave, and an elastic member.
  • the fixed sheave is arranged so as to rotate about the rotation axis.
  • the movable sheave is arranged so as to rotate around the rotation axis.
  • the movable sheave is disposed so as to move along the rotation axis.
  • the elastic member has a central axis disposed coaxially with the rotation axis. The elastic member biases the movable sheave toward the fixed sheave.
  • the elastic member has a first end and a second end. The second end has a larger diameter than the first end. The second end is in contact with the movable sheave.
  • the elastic member urges the movable sheave to the fixed sheave by the second end having a diameter larger than that of the first end. For this reason, an elastic member can contact
  • the central axis of the elastic member may not completely coincide with the rotation axis.
  • the elastic member has a truncated cone shape.
  • the elastic member is a disc spring.
  • the load required to securely clamp the belt by the fixed sheave and the movable sheave is higher when the belt is at the outer peripheral position than when the belt is at the inner peripheral position. Then, by appropriately setting the load characteristics of the disc spring, the disc spring moves the movable sheave toward the belt with a higher load when the belt is at the outer peripheral position than when the belt is at the inner peripheral position. Can be pressed.
  • the fixed sheave and the movable sheave are configured to sandwich the belt between the outer peripheral side position and the inner peripheral side position in the radial direction.
  • the elastic member may be composed of a plurality of disc springs.
  • the pulley device further includes a plate and a cylindrical member.
  • the tubular member extends along the axial direction from the plate.
  • the first end of the elastic member is in contact with the tip of the cylindrical member.
  • the cylindrical member can be a coil spring. According to this configuration, since the coil spring is also contracted in the axial direction, the amount of deflection of the disc spring can be reduced.
  • bending of the movable sheave can be prevented.
  • FIG. 9 is a side cross-sectional view of a pulley device according to Modification 3.
  • the pulley device 100 is a driven-side pulley device 100. Torque is transmitted to the driven pulley device 100 from the driving pulley device (not shown) via the belt 101.
  • the belt 101 is a member for transmitting torque.
  • FIG. 1 is a side cross-sectional view of the pulley device 100.
  • the rotation axis O means the rotation axis of the pulley device 100.
  • the radial direction means the radial direction of a circle around the rotation axis O.
  • the outer side in the radial direction means the side away from the rotation axis O in the radial direction, and the inner side in the radial direction means the side closer to the rotation axis O in the radial direction.
  • the axial direction means a direction along the rotation axis O.
  • the first side in the axial direction means the left side of FIG. 1, and the second side in the axial direction means the right side of FIG.
  • the circumferential direction means the circumferential direction of a circle around the rotation axis O.
  • the pulley apparatus 100 includes a fixed sheave 1, a movable sheave 2, and a disc spring 3.
  • the pulley apparatus 100 further includes a fixed sheave boss 4, a movable sheave boss 5, a centrifugal clutch 6, and a cam mechanism 8.
  • the disc spring 3 corresponds to the elastic member of the present invention.
  • the fixed sheave 1 is arranged so as to rotate around the rotation axis O.
  • the central axis of the fixed sheave 1 is arranged substantially coaxially with the rotation axis O.
  • the fixed sheave 1 is disposed on the second side of the movable sheave 2 in the axial direction.
  • the fixed sheave 1 is fixed so as not to move in the axial direction.
  • the fixed sheave 1 is disk-shaped and has a through hole 1a in the center.
  • the facing surface 1b of the fixed sheave 1 is inclined so as to be separated from the movable sheave 2 as it goes outward in the radial direction. That is, the facing surface 1b is inclined toward the second side in the axial direction toward the outer side in the radial direction.
  • the facing surface 1 b of the fixed sheave 1 is a surface facing the movable sheave 2. That is, the facing surface 1b of the fixed sheave 1 faces the first side in the axial direction.
  • the fixed sheave boss 4 is cylindrical and extends in the axial direction.
  • the central axis of the fixed sheave boss 4 is arranged substantially coaxially with the rotation axis O.
  • the fixed sheave boss 4 has a third end 4a, a fourth end 4b, and a plurality of holes 4c.
  • the third end 4a is an end on the first side in the axial direction.
  • a centrifugal clutch 6 is attached to the third end 4a.
  • the third end 4a has attachment surfaces extending in parallel to each other on the outer peripheral surface. Since the third end 4a has a smaller outer diameter than other portions, a shoulder 4d is formed.
  • the fourth end 4b of the fixed sheave boss 4 is an end on the second side in the axial direction.
  • the fixed sheave 1 is fixed to the fourth end 4b.
  • the fourth end 4b is inserted and fixed in the through hole 1a of the fixed sheave 1.
  • the fixed sheave boss 4 rotates integrally with the fixed sheave 1.
  • the outer diameter of the 4th edge part 4b is larger than the outer diameter of another part.
  • the output shaft (not shown) extends in the axial direction inside the fixed sheave boss 4.
  • the output shaft is a shaft for transmitting torque to the rear wheels, for example.
  • the output shaft and the fixed sheave boss 4 rotate relative to each other.
  • a bearing 11 is disposed between the output shaft and the fixed sheave boss 4.
  • the movable sheave 2 is arranged so as to rotate around the rotation axis O.
  • the central axis of the movable sheave 2 is arranged substantially coaxially with the rotation axis O.
  • the movable sheave 2 is arranged so as to move along the rotation axis O. That is, the movable sheave 2 is disposed so as to move in the axial direction.
  • the movable sheave 2 is disposed on the first side of the fixed sheave 1 in the axial direction.
  • the movable sheave 2 is disc-shaped and has a through hole 2a in the center.
  • the facing surface 2b of the movable sheave 2 is inclined so as to be separated from the fixed sheave 1 as it goes outward in the radial direction. That is, the opposing surface 2b is inclined toward the first side in the axial direction toward the outer side in the radial direction.
  • the facing surface 2 b of the movable sheave 2 is a surface facing the fixed sheave 1. That is, the facing surface 2b of the movable sheave 2 faces the second side in the axial direction.
  • the facing surface 1b of the fixed sheave 1 and the facing surface 2b of the movable sheave 2 are opposed to each other with a space therebetween. That is, a V groove is formed by the facing surface 1 b of the fixed sheave 1 and the facing surface 2 b of the movable sheave 2.
  • the groove width of the V groove changes.
  • a belt 101 is disposed in the V groove. The belt 101 is sandwiched between the facing surface 1 b of the fixed sheave 1 and the facing surface 2 b of the movable sheave 2.
  • the fixed sheave 1 and the movable sheave 2 are configured to sandwich the belt 101 between an outer peripheral side position and an inner peripheral side position in the radial direction. That is, the belt 101 moves between the outer peripheral side position and the inner peripheral side position.
  • 1 is a diagram when the belt 101 is located at the inner circumferential side position
  • FIG. 2 is a diagram when the belt 101 is located at the outer circumferential side position. Note that the belt 101 is at the outer circumferential side position during low-speed traveling, and the belt 101 is at the inner circumferential side position during high-speed traveling.
  • the movable sheave boss 5 is cylindrical and extends in the axial direction.
  • the central axis of the movable sheave boss 5 is arranged substantially coaxially with the rotation axis O.
  • the movable sheave boss 5 is disposed so as to cover the fixed sheave boss 4.
  • the inner peripheral surface of the movable sheave boss 5 is in contact with the outer peripheral surface of the fixed sheave boss 4.
  • the movable sheave boss 5 is slidable on the fixed sheave boss 4 in the axial direction.
  • the movable sheave boss 5 has a fifth end 5a and a sixth end 5b.
  • the fifth end 5a is an end on the first side in the axial direction
  • the sixth end 5b is an end on the second side in the axial direction.
  • the movable sheave 2 is fixed to the sixth end 5b. Specifically, the sixth end portion 5 b is inserted and fixed in the through hole 2 a of the movable sheave 2. For this reason, the movable sheave 2 and the movable sheave boss 5 rotate integrally.
  • FIG. 3 is a side sectional view of the movable sheave boss 5
  • FIG. 4 is a side view of the boss main body 5c.
  • the movable sheave boss 5 includes a boss body 5c and a cover 5d.
  • the boss body 5c is cylindrical. As shown in FIGS. 3 and 4, the boss body 5c has a plurality of cam grooves 5e. Each cam groove 5e extends in the axial direction. The cam grooves 5e are arranged at intervals in the circumferential direction.
  • the cover 5d is cylindrical.
  • the cover portion 5d is disposed so as to cover the outer peripheral surface of the boss main body portion 5c. Specifically, the inner peripheral surface of the cover portion 5d is in contact with the outer peripheral surface of the boss main body portion 5c.
  • the boss body 5c and the cover 5d are fixed to each other. For example, the boss body 5c and the cover 5d are bonded to each other.
  • the cam groove 5e is sealed.
  • the cam groove 5e is filled with grease or the like.
  • the cam mechanism 8 includes a plurality of torque pins 81 and a plurality of cam grooves 5e.
  • Each torque pin 81 is configured to project radially outward from the outer peripheral surface of the fixed sheave boss 4. Specifically, each torque pin 81 is inserted and fixed in the hole 4c of the fixed sheave boss 4. Further, the protruding portion of each torque pin 81 is disposed in each cam groove 5e. Each torque pin 81 is slidable in each cam groove 5e.
  • Each torque pin 81 has a pin main body 81a and a resin collar 81b.
  • the pin main body 81a has a cylindrical shape and protrudes radially outward from the outer peripheral surface of the fixed sheave boss 4.
  • the pin body 81 a is fixed to the hole 4 c of the fixed sheave boss 4.
  • the resin collar 81b is disposed so as to cover the outer peripheral surface of the pin body 81a. Specifically, the resin collar 81b covers a portion of the pin body 81a protruding from the fixed sheave boss 4.
  • each cam groove 5e is formed in the boss body 5c of the movable sheave boss 5. As shown in FIG. Each cam groove 5e extends in the axial direction and is inclined in the circumferential direction. Each torque pin 81 can slide in each cam groove 5e.
  • the disc spring 3 biases the movable sheave 2 toward the fixed sheave 1. That is, the disc spring 3 urges the movable sheave 2 toward the second side in the axial direction. As a result, the fixed sheave 1 and the movable sheave 2 sandwich the belt 101.
  • the disc spring 3 has a truncated conical shape and has a first end 3a and a second end 3b.
  • the first end 3a is an end on the first side in the axial direction
  • the second end 3b is an end on the second side in the axial direction.
  • the diameter of the second end 3b is larger than the diameter of the first end 3a.
  • the outer diameter of the second end 3b is larger than the outer diameter of the first end 3a.
  • the central axis of the disc spring 3 is arranged substantially coaxially with the rotation axis O.
  • the inner peripheral surface of the first end 3 a of the disc spring 3 is in contact with the outer peripheral surface of the movable sheave boss 5.
  • the first end 3 a is in contact with the tubular member 7.
  • the cylindrical member 7 is a cylindrical member extending in the axial direction.
  • the cylindrical member 7 extends from the drive plate 61 described later toward the movable sheave 2. Specifically, the cylindrical member 7 extends from the drive plate 61 to the second side in the axial direction so as to exceed the weight 62.
  • the cylindrical member 7 is disposed so as to cover the movable sheave boss 5.
  • the first end 3 a of the disc spring 3 is in contact with the end of the cylindrical member 7 on the second side in the axial direction.
  • the second end 3 b of the disc spring 3 is in contact with the movable sheave 2. Specifically, the second end 3b is in contact with a surface 2c opposite to the facing surface 2b of the movable sheave 2. The second end 3b of the disc spring 3 is in contact with the movable sheave 2 between the outer peripheral side position and the inner peripheral side position in the radial direction.
  • the second end 3 b of the disc spring 3 when the belt 101 is in the inner peripheral side position, the second end 3 b of the disc spring 3 is located on the outer side in the radial direction than the belt 101. As shown in FIG. 2, when the belt 101 is at the outer peripheral side position, the second end 3 b of the disc spring 3 is located on the inner side in the radial direction than the belt 101.
  • the radial position where the second end 3 b of the disc spring 3 contacts the movable sheave 2 changes according to the radial position of the belt 101.
  • the disc spring 3 has a through hole 3c.
  • the movable sheave boss 5 passes through the through hole 3c of the disc spring 3.
  • the disc spring 3 is slidable on the movable sheave boss 5 in the axial direction. Further, the disc spring 3 may rotate integrally with the movable sheave boss 5 or may rotate relatively.
  • the centrifugal clutch 6 has a drive plate 61, a plurality of weights 62, and a clutch housing 63.
  • the centrifugal clutch 6 is configured to transmit or block the rotation of the fixed sheave 1 and the movable sheave 2 to the output shaft.
  • the centrifugal clutch 6 is configured to transmit or block the rotation of the fixed sheave boss 4 to the output shaft.
  • the drive plate 61 is attached to the third end 4a of the fixed sheave boss 4.
  • the drive plate 61 rotates integrally with the fixed sheave boss 4.
  • the drive plate 61 is a disk-shaped plate having a through hole 61a in the center.
  • the through hole 61 a is shaped to engage with the third end 4 a of the fixed sheave boss 4.
  • the outer peripheral edge of the through-hole 61 a has substantially the same shape as the outer peripheral edge of the fixed sheave boss 4.
  • the movement of the drive plate 61 toward the second side in the axial direction is restricted by contacting the shoulder 4d of the fixed sheave boss 4. Further, on the first side in the axial direction of the drive plate 61, the nut 64 is screwed into the third end 4 a of the fixed sheave boss 4. The nut 64 also restricts the drive plate 61 from moving toward the first side in the axial direction.
  • Each end of the circumferential direction is attached to the drive plate 61 so that it can swing.
  • a friction material 65 is fixed to the outer peripheral surface of each weight 62.
  • a return spring 66 is attached to the other end of each weight 62 so as to urge each weight 62 inward in the radial direction.
  • the clutch housing 63 is disposed so as to cover each weight 62 from the outside in the radial direction.
  • the clutch housing 63 is supported by the fixed sheave boss 4 so as to be relatively rotatable.
  • the clutch housing 63 has a boss portion 63a.
  • a spline hole 63b is formed in the boss portion 63a.
  • the output shaft can be spline engaged with the spline hole 63b.
  • the transmission state of the centrifugal clutch 6 means a state in which the centrifugal clutch 6 transmits the rotation of the fixed sheave 1 and the movable sheave 2 to the output shaft.
  • the disconnected state of the centrifugal clutch 6 means a state in which the centrifugal clutch 6 does not transmit the rotation of the fixed sheave 1 and the movable sheave 2 to the output shaft.
  • the pulley device configured as described above operates as follows.
  • the width of the groove formed by the fixed sheave 1 and the movable sheave 2 operates in reverse to the groove width in the driving-side pulley device. That is, when the belt 101 moves outward in the radial direction in the driving pulley apparatus, the belt 101 moves inward in the radial direction in the driven pulley apparatus 100.
  • the movable sheave 2 moves away from the fixed sheave 1 against the biasing force of the disc spring 3. That is, the movable sheave 2 moves to the first side in the axial direction. As a result, the width of the groove between the fixed sheave 1 and the movable sheave 2 is increased.
  • the winding diameter of the belt 101 becomes small. That is, the belt 101 moves inward in the radial direction in the pulley apparatus on the driving side.
  • the pulley apparatus 100 has the following characteristics.
  • the disc spring 3 urges the movable sheave 2 toward the fixed sheave 1 by a second end 3b having a diameter larger than that of the first end 3a. For this reason, the disc spring 3 can contact
  • the disc spring 3 was illustrated as an example of the elastic member of this invention, the elastic member of this invention is not limited to a disc spring.
  • a bamboo spring or the like may be used instead of the disc spring 3.
  • the elastic member of the present invention may be constituted by a plurality of disc springs. That is, as shown in FIG. 5, the pulley device 100 may have a plurality of disc springs 3.
  • the disc springs 3 are arranged in the axial direction. Specifically, each disc spring 3 has a small-diameter end 3d and a large-diameter end 3e.
  • the small-diameter end portion 3d is a radially inner end portion
  • the large-diameter end portion 3e is a radially outer end portion.
  • Each disc spring 3 is in contact with the adjacent disc spring 3, small diameter end portions 3d, and large diameter end portions 3e.
  • the small-diameter end 3d of the disc spring 3 disposed on the first side in the axial direction is the first end 3a.
  • the large-diameter end 3e of the disc spring 3 disposed on the second side in the axial direction is the second end 3b.
  • the cylindrical member 7 of the said embodiment may be comprised by the coil spring.

Abstract

A pulley device (100) is provided with a stationary sheave (1), a movable sheave (2), and a disc spring (3). The movable sheave (2) is disposed so as to move along a rotation axis (O). The disc spring (3) has a center axis disposed coaxially with the rotation axis (O). The disc spring (3) presses the movable sheave (2) toward the stationary sheave (1). A second end (3b) of the disc spring (3) has a larger diameter than a first end (3a) thereof. The second end (3b) is in contact with the movable sheave (2).

Description

プーリ装置Pulley device
　本発明は、プーリ装置に関するものである。 The present invention relates to a pulley device.
　スクータ型の自動二輪車などでは、ベルト式の無段変速機が採用されている（例えば、特許文献１）。この無段変速機は、駆動プーリ装置と、従動プーリ装置と、ベルトとを備えている。ベルトは、駆動プーリ装置と従動プーリ装置との間に架けられている。 In a scooter type motorcycle or the like, a belt type continuously variable transmission is employed (for example, Patent Document 1). This continuously variable transmission includes a drive pulley device, a driven pulley device, and a belt. The belt is suspended between the drive pulley device and the driven pulley device.
　駆動プーリ装置は、エンジンのクランク軸に固定されている。駆動プーリ装置は、可動シーブと固定シーブとを有している。可動シーブが、固定シーブに接近する方向に移動すると、ベルトは外周側へと移動する。また、可動シーブが固定シーブから離れる方向に移動すると、ベルトは内周側へ移動する。 The drive pulley device is fixed to the engine crankshaft. The drive pulley device has a movable sheave and a fixed sheave. When the movable sheave moves in a direction approaching the fixed sheave, the belt moves toward the outer peripheral side. Further, when the movable sheave moves in a direction away from the fixed sheave, the belt moves to the inner peripheral side.
　従動プーリ装置は、固定シーブと可動シーブとを有している。可動シーブは、固定シーブに対して接近及び離間するように移動可能に配置されている。可動シーブは、コイルバネによって固定シーブに近付く方向に付勢されている。また、可動シーブは、ベルトからの押圧力によって、コイルバネの付勢力に抗して離間する方向に移動する。 The driven pulley device has a fixed sheave and a movable sheave. The movable sheave is disposed so as to be movable toward and away from the fixed sheave. The movable sheave is biased in a direction approaching the fixed sheave by a coil spring. Further, the movable sheave moves in a direction away from the urging force of the coil spring by the pressing force from the belt.
特開２００８－２５６１２２号公報JP 2008-256122 A
　従動プーリ装置の可動シーブの内周端部は、コイルバネによって固定シーブに近付く方向に押圧されている。一方で、可動シーブは、内周端部よりも径方向の外側において、ベルトによって固定シーブから離れる方向に押圧されている。このため、可動シーブの外周端部が固定シーブから離れる方向に、可動シーブが撓むおそれがある。 The inner peripheral end of the movable sheave of the driven pulley device is pressed in a direction approaching the fixed sheave by a coil spring. On the other hand, the movable sheave is pressed in the direction away from the fixed sheave by the belt on the outer side in the radial direction from the inner peripheral end. For this reason, there exists a possibility that a movable sheave may bend in the direction which the outer peripheral edge part of a movable sheave leaves | separates from a fixed sheave.
　本発明の課題は、可動シーブの撓みを防止することにある。 An object of the present invention is to prevent bending of the movable sheave.
　本発明のある側面に係るプーリ装置は、固定シーブと、可動シーブと、弾性部材とを備えている。固定シーブは、回転軸周りに回転するように配置されている。可動シーブは、回転軸周りに回転するように配置されている。また、可動シーブは、回転軸に沿って移動するように配置されている。弾性部材は、回転軸と同軸上に配置された中心軸を有する。弾性部材は、可動シーブを固定シーブに向かって付勢する。弾性部材は、第１端部と、第２端部と、を有する。第２端部は、第１端部よりも径が大きい。第２端部は、可動シーブと当接する。 A pulley apparatus according to an aspect of the present invention includes a fixed sheave, a movable sheave, and an elastic member. The fixed sheave is arranged so as to rotate about the rotation axis. The movable sheave is arranged so as to rotate around the rotation axis. The movable sheave is disposed so as to move along the rotation axis. The elastic member has a central axis disposed coaxially with the rotation axis. The elastic member biases the movable sheave toward the fixed sheave. The elastic member has a first end and a second end. The second end has a larger diameter than the first end. The second end is in contact with the movable sheave.
　この構成によれば、弾性部材は、第１端部よりも径が大きい第２端部によって、可動シーブを固定シーブへ付勢している。このため、弾性部材は、従来のプーリ装置で使用されていたコイルバネよりも、径方向の外側において可動シーブと当接することができる。この結果、可動シーブに作用する曲げモーメントが小さくなり、可動シーブの撓みを防止することができる。なお、弾性部材の中心軸は、回転軸と完全に一致していなくてもよい。 According to this configuration, the elastic member urges the movable sheave to the fixed sheave by the second end having a diameter larger than that of the first end. For this reason, an elastic member can contact | abut with a movable sheave in the radial direction outer side rather than the coil spring used with the conventional pulley apparatus. As a result, the bending moment acting on the movable sheave is reduced, and the bending of the movable sheave can be prevented. Note that the central axis of the elastic member may not completely coincide with the rotation axis.
　好ましくは、弾性部材は、切頭円錐状である。 Preferably, the elastic member has a truncated cone shape.
　好ましくは、弾性部材は、皿バネである。固定シーブと可動シーブとによってベルトを確実に挟持するために必要な荷重は、ベルトが内周側位置にあるときよりも、外周側位置にあるときの方が高い。そして、皿バネの荷重特性を適切に設定することによって、ベルトが内周側位置にあるときよりも外周側位置にあるときの方が、皿バネは、より高い荷重によって可動シーブをベルトに向かって押圧することができる。 Preferably, the elastic member is a disc spring. The load required to securely clamp the belt by the fixed sheave and the movable sheave is higher when the belt is at the outer peripheral position than when the belt is at the inner peripheral position. Then, by appropriately setting the load characteristics of the disc spring, the disc spring moves the movable sheave toward the belt with a higher load when the belt is at the outer peripheral position than when the belt is at the inner peripheral position. Can be pressed.
　好ましくは、固定シーブと可動シーブとは、径方向における外周側位置と内周側位置との間でベルトを挟持するように構成されている。そして、皿バネの第２端部は、径方向において外周側位置と内周側位置との間において、可動シーブと当接する。この構成によれば、より確実に、可動シーブの撓みを防止することができる。 Preferably, the fixed sheave and the movable sheave are configured to sandwich the belt between the outer peripheral side position and the inner peripheral side position in the radial direction. And the 2nd end part of a disc spring contact | abuts with a movable sheave between an outer peripheral side position and an inner peripheral side position in radial direction. According to this configuration, it is possible to more reliably prevent the movable sheave from being bent.
　弾性部材は、複数の皿バネによって構成されていてもよい。 The elastic member may be composed of a plurality of disc springs.
　好ましくは、プーリ装置は、プレートと、筒状部材とをさらに備える。筒状部材は、プレートから軸方向に沿って延びる。弾性部材の第１端部は、筒状部材の先端部に当接する。 Preferably, the pulley device further includes a plate and a cylindrical member. The tubular member extends along the axial direction from the plate. The first end of the elastic member is in contact with the tip of the cylindrical member.
　筒状部材は、コイルバネとすることができる。この構成によれば、コイルバネも軸方向に縮むために、皿バネのたわみ量を小さくすることができる。 The cylindrical member can be a coil spring. According to this configuration, since the coil spring is also contracted in the axial direction, the amount of deflection of the disc spring can be reduced.
　本発明によれば、可動シーブの撓みを防止することができる。 According to the present invention, bending of the movable sheave can be prevented.
プーリ装置の側面断面図。Side surface sectional drawing of a pulley apparatus. プーリ装置の側面断面図。Side surface sectional drawing of a pulley apparatus. 可動シーブ用ボスの側面断面図。Side surface sectional drawing of the boss | hub for movable sheaves. 可動シーブ用ボスの側面図。The side view of the boss | hub for movable sheaves. 変形例２に係るプーリ装置の側面断面図。The side sectional drawing of the pulley apparatus which concerns on the modification 2. FIG. 変形例３に係るプーリ装置の側面断面図。FIG. 9 is a side cross-sectional view of a pulley device according to Modification 3.
　以下、本発明に係るプーリ装置の実施形態について図面を参照しつつ説明する。なお、本実施形態に係るプーリ装置１００は、従動側のプーリ装置１００である。この従動側のプーリ装置１００には、駆動側のプーリ装置（図示省略）からベルト１０１を介してトルクが伝達される。ベルト１０１は、トルクを伝達するための部材である。 Hereinafter, embodiments of a pulley apparatus according to the present invention will be described with reference to the drawings. The pulley device 100 according to the present embodiment is a driven-side pulley device 100. Torque is transmitted to the driven pulley device 100 from the driving pulley device (not shown) via the belt 101. The belt 101 is a member for transmitting torque.
　図１は、プーリ装置１００の側面断面図である。なお、以下の説明において、回転軸Ｏとは、プーリ装置１００の回転軸を意味する。径方向とは、回転軸Ｏを中心とした円の径方向を意味する。径方向の外側とは、径方向において回転軸Ｏから離れる側を意味し、径方向の内側とは、径方向において回転軸Ｏに近付く側を意味する。軸方向とは、回転軸Ｏに沿った方向を意味する。軸方向の第１側とは図１の左側を意味し、軸方向の第２側とは、図２の右側を意味する。周方向とは、回転軸Ｏを中心とした円の周方向を意味する。 FIG. 1 is a side cross-sectional view of the pulley device 100. In the following description, the rotation axis O means the rotation axis of the pulley device 100. The radial direction means the radial direction of a circle around the rotation axis O. The outer side in the radial direction means the side away from the rotation axis O in the radial direction, and the inner side in the radial direction means the side closer to the rotation axis O in the radial direction. The axial direction means a direction along the rotation axis O. The first side in the axial direction means the left side of FIG. 1, and the second side in the axial direction means the right side of FIG. The circumferential direction means the circumferential direction of a circle around the rotation axis O.
　図１に示すように、プーリ装置１００は、固定シーブ１と、可動シーブ２と、皿バネ３とを備えている。また、プーリ装置１００は、固定シーブ用ボス４と、可動シーブ用ボス５と、遠心クラッチ６と、カム機構８と、をさらに備えている。なお、皿バネ３は、本発明の弾性部材に相当する。 As shown in FIG. 1, the pulley apparatus 100 includes a fixed sheave 1, a movable sheave 2, and a disc spring 3. The pulley apparatus 100 further includes a fixed sheave boss 4, a movable sheave boss 5, a centrifugal clutch 6, and a cam mechanism 8. The disc spring 3 corresponds to the elastic member of the present invention.
　固定シーブ１は、回転軸Ｏを中心に回転するように配置されている。固定シーブ１の中心軸は、回転軸Oと実質的に同軸上に配置されている。固定シーブ１は、軸方向において、可動シーブ２の第２側に配置されている。固定シーブ１は、軸方向に移動しないように固定されている。 The fixed sheave 1 is arranged so as to rotate around the rotation axis O. The central axis of the fixed sheave 1 is arranged substantially coaxially with the rotation axis O. The fixed sheave 1 is disposed on the second side of the movable sheave 2 in the axial direction. The fixed sheave 1 is fixed so as not to move in the axial direction.
　固定シーブ１は、円板状であって、中央に貫通孔１ａを有している。固定シーブ１の対向面１ｂは、径方向の外側にいくにしたがって、可動シーブ２から離れるように傾斜している。すなわち、対向面１ｂは、径方向の外側に向かって、軸方向の第２側に傾斜している。なお、固定シーブ１の対向面１ｂは、可動シーブ２に対向する面である。すなわち、固定シーブ１の対向面１ｂは、軸方向の第１側を向いている。 The fixed sheave 1 is disk-shaped and has a through hole 1a in the center. The facing surface 1b of the fixed sheave 1 is inclined so as to be separated from the movable sheave 2 as it goes outward in the radial direction. That is, the facing surface 1b is inclined toward the second side in the axial direction toward the outer side in the radial direction. The facing surface 1 b of the fixed sheave 1 is a surface facing the movable sheave 2. That is, the facing surface 1b of the fixed sheave 1 faces the first side in the axial direction.
　固定シーブ用ボス４は、筒状であって、軸方向に延びている。固定シーブ用ボス４の中心軸は、回転軸Oと実質的に同軸上に配置されている。固定シーブ用ボス４は、第３端部４ａと、第４端部４ｂと、複数の孔部４ｃとを有している。 The fixed sheave boss 4 is cylindrical and extends in the axial direction. The central axis of the fixed sheave boss 4 is arranged substantially coaxially with the rotation axis O. The fixed sheave boss 4 has a third end 4a, a fourth end 4b, and a plurality of holes 4c.
　第３端部４ａは、軸方向の第１側の端部である。この第３端部４ａに、遠心クラッチ６が取り付けられている。第３端部４ａは、互いに平行に延びる取り付け面を外周面に有している。第３端部４ａは他の部分よりも外径が小さいため、肩部４ｄが形成されている。 The third end 4a is an end on the first side in the axial direction. A centrifugal clutch 6 is attached to the third end 4a. The third end 4a has attachment surfaces extending in parallel to each other on the outer peripheral surface. Since the third end 4a has a smaller outer diameter than other portions, a shoulder 4d is formed.
　固定シーブ用ボス４の第４端部４ｂは、軸方向の第２側の端部である。第４端部４ｂに固定シーブ１が固定されている。詳細には、第４端部４ｂは、固定シーブ１の貫通孔１ａに挿入されて固定されている。このため、固定シーブ用ボス４は、固定シーブ１と一体的に回転する。なお、第４端部４ｂの外径は、他の部分の外径よりも大きい。 The fourth end 4b of the fixed sheave boss 4 is an end on the second side in the axial direction. The fixed sheave 1 is fixed to the fourth end 4b. Specifically, the fourth end 4b is inserted and fixed in the through hole 1a of the fixed sheave 1. For this reason, the fixed sheave boss 4 rotates integrally with the fixed sheave 1. In addition, the outer diameter of the 4th edge part 4b is larger than the outer diameter of another part.
　出力軸（図示省略）は、固定シーブ用ボス４の内部を、軸方向に延びている。出力軸は、例えば後輪にトルクを伝えるための軸である。出力軸と固定シーブ用ボス４とは相対回転する。なお、出力軸と固定シーブ用ボス４との間に、ベアリング１１が配置されている。 The output shaft (not shown) extends in the axial direction inside the fixed sheave boss 4. The output shaft is a shaft for transmitting torque to the rear wheels, for example. The output shaft and the fixed sheave boss 4 rotate relative to each other. A bearing 11 is disposed between the output shaft and the fixed sheave boss 4.
　可動シーブ２は、回転軸Ｏを中心に回転するように配置されている。可動シーブ２の中心軸は、回転軸Ｏと実質的に同軸上に配置されている。可動シーブ２は、回転軸Ｏに沿って移動するように配置されている。すなわち、可動シーブ２は、軸方向に移動するように配置されている。可動シーブ２は、軸方向において、固定シーブ１の第１側に配置されている。 The movable sheave 2 is arranged so as to rotate around the rotation axis O. The central axis of the movable sheave 2 is arranged substantially coaxially with the rotation axis O. The movable sheave 2 is arranged so as to move along the rotation axis O. That is, the movable sheave 2 is disposed so as to move in the axial direction. The movable sheave 2 is disposed on the first side of the fixed sheave 1 in the axial direction.
　可動シーブ２は、円板状であって、中央に貫通孔２ａを有している。可動シーブ２の対向面２ｂは、径方向の外側にいくにしたがって、固定シーブ１から離れるように傾斜している。すなわち、対向面２ｂは、径方向の外側に向かって、軸方向の第１側に傾斜している。 The movable sheave 2 is disc-shaped and has a through hole 2a in the center. The facing surface 2b of the movable sheave 2 is inclined so as to be separated from the fixed sheave 1 as it goes outward in the radial direction. That is, the opposing surface 2b is inclined toward the first side in the axial direction toward the outer side in the radial direction.
　可動シーブ２の対向面２ｂは、固定シーブ１に対向する面である。すなわち、可動シーブ２の対向面２ｂは、軸方向の第２側を向いている。固定シーブ１の対向面１ｂと、可動シーブ２の対向面２ｂとは、間隔をあけて対向している。すなわち、固定シーブ１の対向面１ｂと、可動シーブ２の対向面２ｂとによって、Ｖ溝が形成されている。可動シーブ２が軸方向に移動することによって、Ｖ溝の溝幅が変わる。このＶ溝内において、ベルト１０１が配置されている。なお、固定シーブ１の対向面１ｂと、可動シーブ２の対向面２ｂとによって、ベルト１０１を挟持している。 The facing surface 2 b of the movable sheave 2 is a surface facing the fixed sheave 1. That is, the facing surface 2b of the movable sheave 2 faces the second side in the axial direction. The facing surface 1b of the fixed sheave 1 and the facing surface 2b of the movable sheave 2 are opposed to each other with a space therebetween. That is, a V groove is formed by the facing surface 1 b of the fixed sheave 1 and the facing surface 2 b of the movable sheave 2. As the movable sheave 2 moves in the axial direction, the groove width of the V groove changes. A belt 101 is disposed in the V groove. The belt 101 is sandwiched between the facing surface 1 b of the fixed sheave 1 and the facing surface 2 b of the movable sheave 2.
　固定シーブ１と可動シーブ２とは、径方向における外周側位置と内周側位置との間でベルト１０１を挟持するように構成されている。すなわち、ベルト１０１は、外周側位置と内周側位置との間を移動する。なお、図１は、ベルト１０１が内周側位置に位置するときの図であり、図２は、ベルト１０１が外周側位置に位置するときの図である。なお、低速走行の際は、ベルト１０１が外周側位置にあり、高速走行の際は、ベルト１０１が内周側位置にある。 The fixed sheave 1 and the movable sheave 2 are configured to sandwich the belt 101 between an outer peripheral side position and an inner peripheral side position in the radial direction. That is, the belt 101 moves between the outer peripheral side position and the inner peripheral side position. 1 is a diagram when the belt 101 is located at the inner circumferential side position, and FIG. 2 is a diagram when the belt 101 is located at the outer circumferential side position. Note that the belt 101 is at the outer circumferential side position during low-speed traveling, and the belt 101 is at the inner circumferential side position during high-speed traveling.
　可動シーブ用ボス５は、円筒状であって、軸方向に延びている。可動シーブ用ボス５の中心軸は、回転軸Ｏと実質的に同軸上に配置されている。可動シーブ用ボス５は、固定シーブ用ボス４を覆うように配置されている。可動シーブ用ボス５の内周面は、固定シーブ用ボス４の外周面と接触している。 The movable sheave boss 5 is cylindrical and extends in the axial direction. The central axis of the movable sheave boss 5 is arranged substantially coaxially with the rotation axis O. The movable sheave boss 5 is disposed so as to cover the fixed sheave boss 4. The inner peripheral surface of the movable sheave boss 5 is in contact with the outer peripheral surface of the fixed sheave boss 4.
　可動シーブ用ボス５は、軸方向において、固定シーブ用ボス４上を摺動可能である。可動シーブ用ボス５は、第５端部５ａと、第６端部５ｂとを有する。第５端部５ａは軸方向の第１側の端部であり、第６端部５ｂは軸方向の第２側の端部である。 The movable sheave boss 5 is slidable on the fixed sheave boss 4 in the axial direction. The movable sheave boss 5 has a fifth end 5a and a sixth end 5b. The fifth end 5a is an end on the first side in the axial direction, and the sixth end 5b is an end on the second side in the axial direction.
　第６端部５ｂには、可動シーブ２が固定されている。詳細には、第６端部５ｂは、可動シーブ２の貫通孔２ａに挿入されて固定されている。このため、可動シーブ２と可動シーブ用ボス５とは、一体的に回転する。 The movable sheave 2 is fixed to the sixth end 5b. Specifically, the sixth end portion 5 b is inserted and fixed in the through hole 2 a of the movable sheave 2. For this reason, the movable sheave 2 and the movable sheave boss 5 rotate integrally.
　図３は可動シーブ用ボス５の側面断面図、図４はボス本体部５ｃの側面図である。図３に示すように、可動シーブ用ボス５は、ボス本体部５ｃと、カバー部５ｄとを有している。 3 is a side sectional view of the movable sheave boss 5, and FIG. 4 is a side view of the boss main body 5c. As shown in FIG. 3, the movable sheave boss 5 includes a boss body 5c and a cover 5d.
　ボス本体部５ｃは、円筒状である。図３及び図４に示すように、ボス本体部５ｃは、複数のカム溝５ｅを有している。各カム溝５ｅは、軸方向に延びている。各カム溝５ｅは、周方向に互いに間隔をあけて配置されている。 The boss body 5c is cylindrical. As shown in FIGS. 3 and 4, the boss body 5c has a plurality of cam grooves 5e. Each cam groove 5e extends in the axial direction. The cam grooves 5e are arranged at intervals in the circumferential direction.
　カバー部５ｄは、円筒状である。カバー部５ｄは、ボス本体部５ｃの外周面を覆うように配置されている。詳細には、カバー部５ｄの内周面は、ボス本体部５ｃの外周面と接触している。ボス本体部５ｃとカバー部５ｄとは、互いに固定されている。例えば、ボス本体部５ｃとカバー部５ｄとは、互いに接着している。このようにカバー部５ｄがボス本体部５ｃの外周面を覆っているため、カム溝５ｅは、密閉されている。このカム溝５ｅ内に、グリスなどが充填されている。 The cover 5d is cylindrical. The cover portion 5d is disposed so as to cover the outer peripheral surface of the boss main body portion 5c. Specifically, the inner peripheral surface of the cover portion 5d is in contact with the outer peripheral surface of the boss main body portion 5c. The boss body 5c and the cover 5d are fixed to each other. For example, the boss body 5c and the cover 5d are bonded to each other. Thus, since the cover part 5d covers the outer peripheral surface of the boss main body part 5c, the cam groove 5e is sealed. The cam groove 5e is filled with grease or the like.
　図１に示すように、カム機構８は、複数のトルクピン８１と、複数のカム溝５ｅと、によって構成されている。各トルクピン８１は、固定シーブ用ボス４の外周面から径方向の外側に突出するように構成されている。詳細には、各トルクピン８１は、固定シーブ用ボス４の孔部４ｃに挿入されて固定されている。また、各トルクピン８１の突出部は、各カム溝５ｅ内に配置されている。各トルクピン８１は、各カム溝５ｅ内において、摺動可能である。 As shown in FIG. 1, the cam mechanism 8 includes a plurality of torque pins 81 and a plurality of cam grooves 5e. Each torque pin 81 is configured to project radially outward from the outer peripheral surface of the fixed sheave boss 4. Specifically, each torque pin 81 is inserted and fixed in the hole 4c of the fixed sheave boss 4. Further, the protruding portion of each torque pin 81 is disposed in each cam groove 5e. Each torque pin 81 is slidable in each cam groove 5e.
　各トルクピン８１は、ピン本体８１ａと、樹脂カラー８１ｂとを有している。ピン本体８１ａは、円柱状であって、固定シーブ用ボス４の外周面から径方向の外側に突出している。ピン本体８１ａは、固定シーブ用ボス４の孔部４ｃに固定されている。 Each torque pin 81 has a pin main body 81a and a resin collar 81b. The pin main body 81a has a cylindrical shape and protrudes radially outward from the outer peripheral surface of the fixed sheave boss 4. The pin body 81 a is fixed to the hole 4 c of the fixed sheave boss 4.
　樹脂カラー８１ｂは、ピン本体８１ａの外周面を覆うように配置されている。詳細には、樹脂カラー８１ｂは、ピン本体８１ａのうち、固定シーブ用ボス４から突出した部分を覆っている。 The resin collar 81b is disposed so as to cover the outer peripheral surface of the pin body 81a. Specifically, the resin collar 81b covers a portion of the pin body 81a protruding from the fixed sheave boss 4.
　図３及び図４に示すように、各カム溝５ｅは、可動シーブ用ボス５のボス本体部５ｃに形成されている。各カム溝５ｅは、軸方向に延びるとともに、円周方向に傾斜している。各トルクピン８１は、各カム溝５ｅ内を摺動することができる。 3 and 4, each cam groove 5e is formed in the boss body 5c of the movable sheave boss 5. As shown in FIG. Each cam groove 5e extends in the axial direction and is inclined in the circumferential direction. Each torque pin 81 can slide in each cam groove 5e.
　図１に示すように、皿バネ３は、可動シーブ２を固定シーブ１に向かって付勢する。すなわち、皿バネ３は、可動シーブ２を軸方向の第２側に向かって付勢している。これによって、固定シーブ１と可動シーブ２とが、ベルト１０１を挟持する。 As shown in FIG. 1, the disc spring 3 biases the movable sheave 2 toward the fixed sheave 1. That is, the disc spring 3 urges the movable sheave 2 toward the second side in the axial direction. As a result, the fixed sheave 1 and the movable sheave 2 sandwich the belt 101.
　皿バネ３は、切頭円錐状であって、第１端部３ａと第２端部３ｂとを有している。第１端部３ａは軸方向の第１側の端部であり、第２端部３ｂは軸方向の第２側の端部である。第２端部３ｂの径は、第１端部３ａの径よりも大きい。詳細には、第２端部３ｂの外径は、第１端部３ａの外径よりも大きい。また、皿バネ３の中心軸は、回転軸Oと実質的に同軸上に配置されている。 The disc spring 3 has a truncated conical shape and has a first end 3a and a second end 3b. The first end 3a is an end on the first side in the axial direction, and the second end 3b is an end on the second side in the axial direction. The diameter of the second end 3b is larger than the diameter of the first end 3a. Specifically, the outer diameter of the second end 3b is larger than the outer diameter of the first end 3a. Further, the central axis of the disc spring 3 is arranged substantially coaxially with the rotation axis O.
　皿バネ３の第１端部３ａの内周面は、可動シーブ用ボス５の外周面と接触している。また、第１端部３ａは、筒状部材７に当接している。これによって、皿バネ３の軸方向第１側への移動が規制される。すなわち、皿バネ３は、可動シーブ２から離れる方向への移動が筒状部材７によって規制される。 The inner peripheral surface of the first end 3 a of the disc spring 3 is in contact with the outer peripheral surface of the movable sheave boss 5. The first end 3 a is in contact with the tubular member 7. As a result, the movement of the disc spring 3 toward the first side in the axial direction is restricted. That is, movement of the disc spring 3 in the direction away from the movable sheave 2 is restricted by the cylindrical member 7.
　筒状部材７は、軸方向に延びる円筒状の部材である。筒状部材７は、後述するドライブプレート６１から可動シーブ２に向かって延びている。詳細には、筒状部材７は、ドライブプレート６１からウェイト６２を越えるように軸方向の第２側に延びている。筒状部材７は、可動シーブ用ボス５を覆うように配置されている。皿バネ３の第１端部３ａは、この筒状部材７の軸方向の第２側の端部と当接している。 The cylindrical member 7 is a cylindrical member extending in the axial direction. The cylindrical member 7 extends from the drive plate 61 described later toward the movable sheave 2. Specifically, the cylindrical member 7 extends from the drive plate 61 to the second side in the axial direction so as to exceed the weight 62. The cylindrical member 7 is disposed so as to cover the movable sheave boss 5. The first end 3 a of the disc spring 3 is in contact with the end of the cylindrical member 7 on the second side in the axial direction.
　皿バネ３の第２端部３ｂは、可動シーブ２と当接している。詳細には、第２端部３ｂは、可動シーブ２の対向面２ｂと反対側の面２ｃに当接している。皿バネ３の第２端部３ｂは、径方向において、外周側位置と内周側位置との間において、可動シーブ２と当接している。 The second end 3 b of the disc spring 3 is in contact with the movable sheave 2. Specifically, the second end 3b is in contact with a surface 2c opposite to the facing surface 2b of the movable sheave 2. The second end 3b of the disc spring 3 is in contact with the movable sheave 2 between the outer peripheral side position and the inner peripheral side position in the radial direction.
　詳細には、図１に示すようにベルト１０１が内周側位置にあるとき、皿バネ３の第２端部３ｂは、ベルト１０１よりも径方向の外側に位置している。また、図２に示すように、ベルト１０１が外周側位置にあるとき、皿バネ３の第２端部３ｂは、ベルト１０１よりも径方向の内側に位置している。皿バネ３の第２端部３ｂが可動シーブ２と当接する径方向の位置は、ベルト１０１の径方向の位置に応じて変化する。 Specifically, as shown in FIG. 1, when the belt 101 is in the inner peripheral side position, the second end 3 b of the disc spring 3 is located on the outer side in the radial direction than the belt 101. As shown in FIG. 2, when the belt 101 is at the outer peripheral side position, the second end 3 b of the disc spring 3 is located on the inner side in the radial direction than the belt 101. The radial position where the second end 3 b of the disc spring 3 contacts the movable sheave 2 changes according to the radial position of the belt 101.
　皿バネ３は、貫通孔３ｃを有している。皿バネ３の貫通孔３ｃ内を可動シーブ用ボス５が貫通している。なお、皿バネ３は、軸方向において、可動シーブ用ボス５上を摺動可能である。また、皿バネ３は、可動シーブ用ボス５に対して、一体的に回転してもよいし、相対的に回転してもよい。 The disc spring 3 has a through hole 3c. The movable sheave boss 5 passes through the through hole 3c of the disc spring 3. The disc spring 3 is slidable on the movable sheave boss 5 in the axial direction. Further, the disc spring 3 may rotate integrally with the movable sheave boss 5 or may rotate relatively.
　遠心クラッチ６は、ドライブプレート６１、複数のウェイト６２、及びクラッチハウジング６３を有している。遠心クラッチ６は、固定シーブ１及び可動シーブ２の回転を、出力軸に伝達したり遮断したりするように構成されている。詳細には、遠心クラッチ６は、固定シーブ用ボス４の回転を、出力軸に伝達したり遮断したりするように構成されている。 The centrifugal clutch 6 has a drive plate 61, a plurality of weights 62, and a clutch housing 63. The centrifugal clutch 6 is configured to transmit or block the rotation of the fixed sheave 1 and the movable sheave 2 to the output shaft. Specifically, the centrifugal clutch 6 is configured to transmit or block the rotation of the fixed sheave boss 4 to the output shaft.
　ドライブプレート６１は、固定シーブ用ボス４の第３端部４ａに取り付けられている。ドライブプレート６１は、固定シーブ用ボス４と一体的に回転する。詳細には、ドライブプレート６１は、中心部に貫通孔６１ａを有する円板状のプレートである。貫通孔６１ａは、固定シーブ用ボス４の第３端部４ａと係合するような形状である。具体的には、貫通孔６１ａの外周縁は、固定シーブ用ボス４の外周縁とほぼ同じ形状である。 The drive plate 61 is attached to the third end 4a of the fixed sheave boss 4. The drive plate 61 rotates integrally with the fixed sheave boss 4. Specifically, the drive plate 61 is a disk-shaped plate having a through hole 61a in the center. The through hole 61 a is shaped to engage with the third end 4 a of the fixed sheave boss 4. Specifically, the outer peripheral edge of the through-hole 61 a has substantially the same shape as the outer peripheral edge of the fixed sheave boss 4.
　ドライブプレート６１は、固定シーブ用ボス４の肩部４ｄと当接することによって、軸方向の第２側への移動が規制される。また、ドライブプレート６１の軸方向の第１側において、ナット６４が固定シーブ用ボス４の第３端部４ａに螺合している。このナット６４によって、ドライブプレート６１は軸方向の第１側への移動も規制される。 The movement of the drive plate 61 toward the second side in the axial direction is restricted by contacting the shoulder 4d of the fixed sheave boss 4. Further, on the first side in the axial direction of the drive plate 61, the nut 64 is screwed into the third end 4 a of the fixed sheave boss 4. The nut 64 also restricts the drive plate 61 from moving toward the first side in the axial direction.
　各ウェイト６２は、円周方向の一端部がドライブプレート６１に揺動可能に取り付けられている。各ウェイト６２の外周面には、摩擦材６５が固定されている。各ウェイト６２の他端部には、各ウェイト６２を径方向の内側に付勢するようにリターンスプリング６６が取り付けられている。 Each end of the circumferential direction is attached to the drive plate 61 so that it can swing. A friction material 65 is fixed to the outer peripheral surface of each weight 62. A return spring 66 is attached to the other end of each weight 62 so as to urge each weight 62 inward in the radial direction.
　クラッチハウジング６３は、各ウェイト６２を径方向の外側から覆うように配置されている。クラッチハウジング６３は、固定シーブ用ボス４に相対回転可能に支持されている。詳細には、クラッチハウジング６３は、ボス部６３ａを有している。ボス部６３ａには、スプライン孔６３ｂが形成されている。このスプライン孔６３ｂに、出力軸がスプライン係合することができる。 The clutch housing 63 is disposed so as to cover each weight 62 from the outside in the radial direction. The clutch housing 63 is supported by the fixed sheave boss 4 so as to be relatively rotatable. Specifically, the clutch housing 63 has a boss portion 63a. A spline hole 63b is formed in the boss portion 63a. The output shaft can be spline engaged with the spline hole 63b.
　遠心クラッチ６が伝達状態になると、各ウェイト６２の摩擦材６５は、クラッチハウジング６３の内周面と摩擦係合する。また、遠心クラッチ６が遮断状態になると、各ウェイト６２の摩擦材６５は、クラッチハウジング６３の内周面から離れる。なお、遠心クラッチ６の伝達状態とは、遠心クラッチ６が、固定シーブ１及び可動シーブ２の回転を出力軸に伝達する状態を意味する。また、遠心クラッチ６の遮断状態とは、遠心クラッチ６が、固定シーブ１及び可動シーブ２の回転を出力軸に伝達しない状態を意味する。 When the centrifugal clutch 6 is in the transmission state, the friction material 65 of each weight 62 frictionally engages with the inner peripheral surface of the clutch housing 63. Further, when the centrifugal clutch 6 is in the disconnected state, the friction material 65 of each weight 62 is separated from the inner peripheral surface of the clutch housing 63. The transmission state of the centrifugal clutch 6 means a state in which the centrifugal clutch 6 transmits the rotation of the fixed sheave 1 and the movable sheave 2 to the output shaft. The disconnected state of the centrifugal clutch 6 means a state in which the centrifugal clutch 6 does not transmit the rotation of the fixed sheave 1 and the movable sheave 2 to the output shaft.
　上述したように構成されたプーリ装置は、次のように動作する。 The pulley device configured as described above operates as follows.
　駆動側のプーリ装置において、固定シーブと可動シーブとによって構成される溝の幅が狭くなった場合、ベルト１０１の巻き付け径が大きくなる。すなわち、ベルト１０１は、駆動側のプーリ装置において、径方向の外側に移動する。 In the pulley apparatus on the driving side, when the width of the groove formed by the fixed sheave and the movable sheave becomes narrow, the winding diameter of the belt 101 becomes large. That is, the belt 101 moves radially outward in the driving pulley apparatus.
　従動側のプーリ装置１００において、固定シーブ１と可動シーブ２とによって構成される溝の幅は、駆動側のプーリ装置における溝幅と逆に動作する。すなわち、駆動側のプーリ装置においてベルト１０１が径方向の外側に移動すると、従動側のプーリ装置１００においてベルト１０１が径方向の内側へ移動する。 In the driven-side pulley device 100, the width of the groove formed by the fixed sheave 1 and the movable sheave 2 operates in reverse to the groove width in the driving-side pulley device. That is, when the belt 101 moves outward in the radial direction in the driving pulley apparatus, the belt 101 moves inward in the radial direction in the driven pulley apparatus 100.
　ベルト１０１が径方向の内側へ移動すると、皿バネ３の付勢力に抗して、可動シーブ２が固定シーブ１から離れる方向に移動する。すなわち、可動シーブ２が、軸方向の第１側に移動する。この結果、固定シーブ１と可動シーブ２との間の溝の幅が広がる。 When the belt 101 moves inward in the radial direction, the movable sheave 2 moves away from the fixed sheave 1 against the biasing force of the disc spring 3. That is, the movable sheave 2 moves to the first side in the axial direction. As a result, the width of the groove between the fixed sheave 1 and the movable sheave 2 is increased.
　また、駆動側のプーリ装置において、固定シーブと可動シーブとによって構成される溝の幅が広がった場合、ベルト１０１の巻き付け径が小さくなる。すなわち、ベルト１０１は、駆動側のプーリ装置において、径方向の内側に移動する。 Also, in the pulley apparatus on the driving side, when the width of the groove formed by the fixed sheave and the movable sheave increases, the winding diameter of the belt 101 becomes small. That is, the belt 101 moves inward in the radial direction in the pulley apparatus on the driving side.
　駆動側のプーリ装置においてベルト１０１が径方向の内側に移動すると、従動側のプーリ装置１００において、ベルト１０１が径方向の外側へ移動する。そして、皿バネ３の付勢力によって、可動シーブ２が固定シーブ１に近付く方向に移動する。この結果、固定シーブ１と可動シーブ２との間の溝の幅が狭くなる。 When the belt 101 moves inward in the radial direction in the driving-side pulley device, the belt 101 moves outward in the radial direction in the driven-side pulley device 100. Then, the movable sheave 2 moves in a direction approaching the fixed sheave 1 by the biasing force of the disc spring 3. As a result, the width of the groove between the fixed sheave 1 and the movable sheave 2 is reduced.
　以上、本実施形態に係るプーリ装置１００は、次の特徴を有する。 As described above, the pulley apparatus 100 according to the present embodiment has the following characteristics.
　皿バネ３は、第１端部３ａよりも径が大きい第２端部３ｂによって、可動シーブ２を固定シーブ１に向かって付勢している。このため、皿バネ３は、従来のプーリ装置で使用されていたコイルバネよりも、径方向の外側で可動シーブ２と当接することができる。この結果、可動シーブ２の撓みを防止することができる。 The disc spring 3 urges the movable sheave 2 toward the fixed sheave 1 by a second end 3b having a diameter larger than that of the first end 3a. For this reason, the disc spring 3 can contact | abut with the movable sheave 2 on the outer side of radial direction rather than the coil spring used with the conventional pulley apparatus. As a result, bending of the movable sheave 2 can be prevented.
　［変形例］
　以上、本発明の実施形態について説明したが、本発明はこれらに限定されるものではなく、本発明の趣旨を逸脱しない限りにおいて種々の変更が可能である。 [Modification]
As mentioned above, although embodiment of this invention was described, this invention is not limited to these, A various change is possible unless it deviates from the meaning of this invention.
　変形例１
　上記実施形態では、本発明の弾性部材の一例として皿バネ３を例示したが、本発明の弾性部材は皿バネに限定されない。例えば、皿バネ３の代わりに、竹の子バネなどを使用しても良い。 Modification 1
In the said embodiment, although the disc spring 3 was illustrated as an example of the elastic member of this invention, the elastic member of this invention is not limited to a disc spring. For example, a bamboo spring or the like may be used instead of the disc spring 3.
　変形例２
　本発明の弾性部材は、複数の皿バネによって構成されていてもよい。すなわち、図５に示すように、プーリ装置１００は、複数の皿バネ３を有していてもよい。各皿バネ３は、軸方向において並んでいる。詳細には、各皿バネ３は、小径端部３ｄと、大径端部３ｅとを有している。小径端部３ｄは径方向の内側の端部であり、大径端部３ｅは径方向の外側の端部である。各皿バネ３は、隣接する皿バネ３と、小径端部３ｄ同士、大径端部３ｅ同士が当接している。この場合、軸方向の第１側に配置された皿バネ３の小径端部３ｄが、第１端部３ａである。また、軸方向の第２側に配置された皿バネ３の大径端部３ｅが、第２端部３ｂである。 Modification 2
The elastic member of the present invention may be constituted by a plurality of disc springs. That is, as shown in FIG. 5, the pulley device 100 may have a plurality of disc springs 3. The disc springs 3 are arranged in the axial direction. Specifically, each disc spring 3 has a small-diameter end 3d and a large-diameter end 3e. The small-diameter end portion 3d is a radially inner end portion, and the large-diameter end portion 3e is a radially outer end portion. Each disc spring 3 is in contact with the adjacent disc spring 3, small diameter end portions 3d, and large diameter end portions 3e. In this case, the small-diameter end 3d of the disc spring 3 disposed on the first side in the axial direction is the first end 3a. The large-diameter end 3e of the disc spring 3 disposed on the second side in the axial direction is the second end 3b.
　変形例３
　図６に示すように、上記実施形態の筒状部材７は、コイルバネによって構成されていてもよい。 Modification 3
As shown in FIG. 6, the cylindrical member 7 of the said embodiment may be comprised by the coil spring.
　１　　固定シーブ
　２　　可動シーブ
　３　　皿バネ
　３ａ　　第１端部
　３ｂ　　第２端部 1 fixed sheave 2 movable sheave 3 disc spring 3a first end 3b second end

Claims (7)

  1. 　回転軸周りに回転するように配置された固定シーブと、
    　前記回転軸周りに回転するように且つ前記回転軸に沿って移動するように配置された可動シーブと、
    　前記回転軸と同軸上に配置された中心軸を有し、前記可動シーブを前記固定シーブに向かって付勢する弾性部材と、
    を備え、
    　前記弾性部材は、第１端部と、前記第１端部よりも径が大きい第２端部と、を有し、
    　前記第２端部は、前記可動シーブと当接する、
    プーリ装置。     A fixed sheave arranged to rotate about a rotation axis;
    A movable sheave arranged to rotate about the rotation axis and to move along the rotation axis;
    An elastic member having a central axis arranged coaxially with the rotating shaft, and biasing the movable sheave toward the fixed sheave;
    With
    The elastic member has a first end and a second end having a larger diameter than the first end,
    The second end abuts the movable sheave;
    Pulley device.
  2. 　前記弾性部材は、切頭円錐状である、
    請求項１に記載のプーリ装置。     The elastic member has a truncated cone shape.
    The pulley apparatus according to claim 1.
  3. 　前記弾性部材は、皿バネである、
    請求項１又は２に記載のプーリ装置。     The elastic member is a disc spring,
    The pulley apparatus according to claim 1 or 2.
  4. 　前記固定シーブと前記可動シーブとは、径方向における外周側位置と内周側位置との間でベルトを挟持するように構成されており、
    　前記第２端部は、径方向において前記外周側位置と前記内周側位置との間において、前記可動シーブと当接する、
    請求項１から３のいずれかに記載のプーリ装置。     The fixed sheave and the movable sheave are configured to sandwich a belt between an outer peripheral side position and an inner peripheral side position in the radial direction,
    The second end portion is in contact with the movable sheave between the outer peripheral position and the inner peripheral position in the radial direction.
    The pulley apparatus in any one of Claim 1 to 3.
  5. 　前記弾性部材は、複数の皿バネによって構成される、
    請求項１から４のいずれかに記載のプーリ装置。     The elastic member is constituted by a plurality of disc springs.
    The pulley apparatus in any one of Claim 1 to 4.
  6. 　プレートと、
    　前記プレートから前記軸方向に沿って延びる筒状部材をさらに備え、
    　前記弾性部材の第１端部は、前記筒状部材の先端部に当接する、
    請求項１から５のいずれかに記載のプーリ装置。     Plates,
    A cylindrical member extending along the axial direction from the plate;
    A first end of the elastic member is in contact with a tip of the tubular member;
    The pulley apparatus in any one of Claim 1 to 5.
  7. 　前記筒状部材は、コイルバネである、
    請求項６に記載のプーリ装置。     The cylindrical member is a coil spring.
    The pulley apparatus according to claim 6.
PCT/JP2015/072495 2014-09-24 2015-08-07 Pulley device WO2016047293A1 (en)

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP7283884B2 (en) * 2018-10-26 2023-05-30 株式会社エクセディ Hardened part and pulley device using the same
JP7398863B2 (en) * 2018-10-26 2023-12-15 株式会社エクセディ Shaft member and pulley device using the same

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4983043U (en) * 1972-10-25 1974-07-18
JPH0285062U (en) * 1988-12-20 1990-07-03
JPH0754945A (en) * 1993-08-17 1995-02-28 Tochigi Fuji Ind Co Ltd Belt type continuously variable transmission

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4938840U (en) * 1972-07-14 1974-04-05
JPS62156656U (en) * 1986-03-27 1987-10-05
FR2618512B1 (en) * 1987-07-23 1989-10-27 Valeo SPEED VARIATOR PULLEY

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4983043U (en) * 1972-10-25 1974-07-18
JPH0285062U (en) * 1988-12-20 1990-07-03
JPH0754945A (en) * 1993-08-17 1995-02-28 Tochigi Fuji Ind Co Ltd Belt type continuously variable transmission

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