WO2015189999A1 - Rear suspension for motorcycle - Google Patents

Rear suspension for motorcycle Download PDF

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Publication number
WO2015189999A1
WO2015189999A1 PCT/JP2014/065786 JP2014065786W WO2015189999A1 WO 2015189999 A1 WO2015189999 A1 WO 2015189999A1 JP 2014065786 W JP2014065786 W JP 2014065786W WO 2015189999 A1 WO2015189999 A1 WO 2015189999A1
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WO
WIPO (PCT)
Prior art keywords
swing arm
movable part
rear suspension
connecting means
motorcycle
Prior art date
Application number
PCT/JP2014/065786
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French (fr)
Japanese (ja)
Inventor
瀧井正明
Original Assignee
株式会社ソミック石川
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Filing date
Publication date
Application filed by 株式会社ソミック石川 filed Critical 株式会社ソミック石川
Priority to JP2016527602A priority Critical patent/JP6427568B2/en
Priority to PCT/JP2014/065786 priority patent/WO2015189999A1/en
Priority to CN201480080807.9A priority patent/CN106573662A/en
Publication of WO2015189999A1 publication Critical patent/WO2015189999A1/en

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62K—CYCLES; CYCLE FRAMES; CYCLE STEERING DEVICES; RIDER-OPERATED TERMINAL CONTROLS SPECIALLY ADAPTED FOR CYCLES; CYCLE AXLE SUSPENSIONS; CYCLE SIDE-CARS, FORECARS, OR THE LIKE
    • B62K25/00—Axle suspensions
    • B62K25/04—Axle suspensions for mounting axles resiliently on cycle frame or fork
    • B62K25/12—Axle suspensions for mounting axles resiliently on cycle frame or fork with rocking arm pivoted on each fork leg
    • B62K25/14—Axle suspensions for mounting axles resiliently on cycle frame or fork with rocking arm pivoted on each fork leg with single arm on each fork leg
    • B62K25/20—Axle suspensions for mounting axles resiliently on cycle frame or fork with rocking arm pivoted on each fork leg with single arm on each fork leg for rear wheel
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62K—CYCLES; CYCLE FRAMES; CYCLE STEERING DEVICES; RIDER-OPERATED TERMINAL CONTROLS SPECIALLY ADAPTED FOR CYCLES; CYCLE AXLE SUSPENSIONS; CYCLE SIDE-CARS, FORECARS, OR THE LIKE
    • B62K25/00—Axle suspensions
    • B62K25/04—Axle suspensions for mounting axles resiliently on cycle frame or fork
    • B62K25/12—Axle suspensions for mounting axles resiliently on cycle frame or fork with rocking arm pivoted on each fork leg
    • B62K25/22—Axle suspensions for mounting axles resiliently on cycle frame or fork with rocking arm pivoted on each fork leg with more than one arm on each fork leg
    • B62K25/26—Axle suspensions for mounting axles resiliently on cycle frame or fork with rocking arm pivoted on each fork leg with more than one arm on each fork leg for rear wheel

Definitions

  • the present invention relates to a rear suspension of a motorcycle.
  • a rear suspension (conventional technology) described in Japanese Patent Application Laid-Open No. 6-183386 includes a buffer mechanism using a rotary damper and a restoration mechanism using a torsion bar.
  • the conventional rotary damper includes a damper shaft that is fixed to a damper stay, a damper body that rotates around the damper shaft, and oil that is filled between the damper shaft and the damper body.
  • the damper stay supporting the damper shaft is provided at a position different from the pivot shaft.
  • the damper shaft is a non-movable part that constitutes a rotary damper
  • the damper body is a movable part that constitutes a rotary damper.
  • the non-movable part and the pivot shaft are arranged in parallel.
  • the non-movable part in order to smoothly rotate the movable part around the non-movable part, it is necessary to dispose the non-movable part so that the level of the non-movable part is equal to the level of the pivot shaft. Therefore, in the prior art, a high degree of assembly accuracy is required for peripheral parts related to the rotary damper.
  • the configuration in which the non-movable part and the pivot shaft are not arranged coaxially causes an increase in the size of the rear suspension.
  • a joint that connects the swing arm and the movable portion is connected to the center portion in the width direction of the swing arm.
  • the swing arm can be twisted, for example, when the axle of the rear wheel is tilted during traveling.
  • the rotation of the movable part may be disturbed, and the rotary damper may be damaged.
  • the movable part of the rotary damper and the swing arm are connected via a plurality of parts (that is, a damper bracket, a swing arm bracket and a link).
  • a damper bracket that is, a damper bracket, a swing arm bracket and a link.
  • the torsion bar and the swing arm are connected via a pair of link mechanisms.
  • Each of the pair of link mechanisms includes a torque arm, a torque rod, and a torque bracket.
  • a first problem to be solved by the present invention is to provide a rear suspension of a motorcycle that can be easily assembled and can be reduced in size.
  • a second problem is to provide a motorcycle rear suspension capable of smoothly rotating a movable portion of a rotary damper even when a swing arm is twisted.
  • a third problem is to provide a rear suspension for a motorcycle in which rear wheels can be easily replaced.
  • a fourth problem is to provide a rear suspension for a motorcycle in which rear wheels can be easily exchanged and a movable part of a rotary damper can be smoothly rotated even when a swing arm is twisted. is there.
  • the fifth problem is to provide a motorcycle rear suspension capable of reducing the number of parts and the number of assembly steps.
  • the present invention provides the following rear suspension of a motorcycle.
  • a swing arm that pivots about a pivot shaft; and a rotary damper that alleviates an impact that occurs when the swing arm pivots, wherein the rotary damper is disposed on the same axis as the pivot shaft.
  • a rear suspension for a motorcycle comprising: a movable part that rotates around the non-movable part in conjunction with rotation of the swing arm; and oil that is filled between the movable part and the non-movable part. 2.
  • the rear suspension for a motorcycle according to claim 1 further comprising a ball joint including a socket connected to one of the swing arm and the movable portion.
  • a connecting means for connecting the swing arm and the movable part is provided, and the connecting means includes a first ball joint connected to the swing arm and a second ball joint connected to the movable part.
  • the rear suspension of a motorcycle according to the above further comprising a joint. 4).
  • a connecting means for connecting the swing arm and the movable part is provided, and the connecting means includes a first ball joint connected to the swing arm and a second ball joint connected to the movable part.
  • the motorcycle rear suspension according to claim 1 further comprising coupling means for coupling the swing arm and the movable part, wherein the coupling means comprises a single component attached to both the swing arm and the movable part. 8).
  • the connecting means includes a ball stud that is connected to one of the swing arm and the movable part, and a ball stud that contacts the ball stud with a ball pair. Since the ball joint including the socket connected to one of the other is provided, the twist of the swing arm can be absorbed by the connecting means.
  • the connecting means includes a joint including a first ball joint connected to the swing arm and a second ball joint connected to the movable part.
  • the twist of the swing arm can be absorbed. Therefore, the present invention can smoothly rotate the movable part even when the swing arm is twisted.
  • the connecting means includes a ball stud that is connected to one of the swing arm and the movable part, and a ball stud that contacts the ball stud with a ball pair.
  • the connecting means includes a joint including a first ball joint connected to the swing arm and a second ball joint connected to the movable part, The twist of the swing arm can be absorbed. Therefore, the present invention can smoothly rotate the movable part even when the swing arm is twisted.
  • the connecting means since the connecting means includes a single part attached to both the swing arm and the movable part, the swing arm and the movable part are connected through a single part. .
  • the number of parts and the number of assembly steps can be reduced as compared with the prior art in which the swing arm and the movable part are connected via a plurality of parts. Since the present invention described in 8 is provided with a support that is provided on the swing arm and supports the coil spring, the coil spring and the swing arm are connected via the support. Therefore, according to the present invention, the number of parts and the number of assembly steps can be reduced as compared with the prior art in which the torsion bar and the swing arm are connected via a pair of link mechanisms.
  • FIG. 1 is a schematic perspective view showing a rear suspension of a motorcycle according to a first embodiment of the present invention.
  • FIG. 2 is a schematic left side view showing the rear suspension of the motorcycle according to the first embodiment of the present invention.
  • 3 is a cross-sectional view taken along a line AA in FIG.
  • FIG. 4 is a sectional view of the rotary damper.
  • FIG. 5 is a schematic bottom view showing the rear suspension of the motorcycle according to the first embodiment of the present invention.
  • FIG. 6 is a schematic perspective view showing a rear suspension of the motorcycle according to the second embodiment of the present invention.
  • FIG. 7 is a schematic left side view showing the rear suspension of the motorcycle according to the second embodiment of the present invention.
  • 8 is a cross-sectional view taken along the line BB in FIG. FIG.
  • FIG. 9 is a perspective view of the joint.
  • FIG. 10 is a cross-sectional view of the first ball joint.
  • FIG. 11 is a schematic perspective view showing the rear suspension of the motorcycle according to the third embodiment of the present invention.
  • FIG. 12 is a schematic perspective view showing the rear suspension of the motorcycle according to the fourth embodiment of the present invention.
  • the rear suspension of the motorcycle according to the first embodiment of the present invention includes a swing arm 101, a rotary damper 102, and a coil spring 103.
  • the swing arm 101 includes a pair of arms (that is, the first arm 104 and the second arm 105), and a bridge 106 that connects the first arm 104 and the second arm 105.
  • the swing arm 101 is configured such that the distal end portion of the first arm 104 and the distal end portion of the second arm 105 are rotatably connected to a pivot shaft 108 fixed to the vehicle body frame 107. , Supported by the pivot shaft 108.
  • holes 109 and 110 are formed in the rear end portion of the first arm 104 and the rear end portion of the second arm 105, respectively.
  • the axle of the wheel 111 is inserted.
  • the swing arm 101 supports both sides of the axle of the rear wheel 111 by the first arm 104 and the second arm 105. However, the swing arm 101 may support only one side of the axle of the rear wheel 111 (see the fourth embodiment and FIG. 12).
  • the rotary damper 102 includes a non-movable part 112, a movable part 113, and an oil 114.
  • the non-movable part 112 includes a hollow shaft part 115 and a first vane 116 protruding outward from the shaft part 115.
  • a spline 117 is formed on the inner peripheral surface of the shaft portion 115.
  • the movable portion 113 includes a cylindrical peripheral wall 118 and a second vane 119 that protrudes inward from the peripheral wall 118. Oil 114 is filled between the non-movable part 112 and the movable part 113.
  • the non-movable part 112 of the rotary damper 102 is arranged coaxially with the pivot shaft 108.
  • a bush 120 interposed between the non-movable part 112 and the pivot shaft 108 is fixed to the vehicle body frame 107.
  • a pivot shaft 108 is inserted through a hole that passes through the bush 120 in the axial direction.
  • the bush 120 is arranged coaxially with the pivot shaft 108, and a spline is formed on the outer peripheral surface of the bush 120.
  • the non-movable part 112 is fixed to the bush 120 by combining a spline formed on the bush 120 and a spline 117 of the non-movable part 112.
  • the axis of the non-movable part 112 coincides with the axis of the pivot shaft 108. Therefore, this embodiment does not require a high level of assembly accuracy. Therefore, this embodiment is easy to assemble. Moreover, since the non-movable part 112 and the pivot shaft 108 are coaxially arranged in this embodiment, the rear suspension can be downsized.
  • the movable portion 113 of the rotary damper 102 is connected to the swing arm 101 via a connecting means.
  • a connecting means that is, one plate 121 attached to both the swing arm 101 and the movable portion 113 as the connecting means, it is not limited to this.
  • the plate 121 has one end fixed to the movable portion 113 with a bolt and the other end fixed to the bridge 106 of the swing arm 101 by welding.
  • the swing arm 101 and the movable portion 113 are connected via a single plate 121 attached to both the swing arm 101 and the movable portion 113, the swing arm and the movable portion are connected via a plurality of components. The number of parts and the number of assembling steps can be reduced as compared with the related art.
  • the rotation of the swing arm 101 is transmitted to the movable portion 113 by the plate 121.
  • the movable portion 113 rotates around the non-movable portion 112 in conjunction with the rotation of the swing arm 101.
  • the second vane 119 pressurizes the oil by the rotation of the movable portion 113, so that the oil 114 flows through the gap between the non-movable portion 112 and the movable portion 113.
  • the flow resistance of the oil 114 generated at this time becomes a braking force that decelerates the rotation of the movable portion 113.
  • This braking force is transmitted to the bridge 106 by the plate 121.
  • the plate 121 is preferably connected to the center portion in the width direction of the swing arm 101 (that is, the center portion of the bridge 106 that is an intermediate position between the first arm 104 and the second arm 105). Thereby, the braking force of the rotary damper 102 acts evenly on the pair of arms 104 and 105, so that the twist of the swing arm 101 can be suppressed.
  • the coil spring 103 is supported by a support provided on the swing arm 101 (ie, the first support 122).
  • the first support 122 is rotatably attached to a bracket 123 provided on the bridge 106 of the swing arm 101.
  • the other end of the coil spring 103 is supported by the second support 124.
  • the second support 124 is rotatably attached to a bracket 125 provided on the vehicle body frame 107.
  • the coil spring 103 arranged in this manner expands and contracts in conjunction with the rotation of the swing arm 101, and the elastic force of the coil spring 103 generated at that time returns the swing arm 101 to its original position.
  • the bracket 123 to which the first support 122 is attached may be provided at the center in the width direction of the swing arm 101 (that is, the center of the bridge 106 that is an intermediate position between the first arm 104 and the second arm 105). preferable. Thereby, since the elastic force of the coil spring 103 acts equally on the pair of arms 104 and 105, the twist of the swing arm 101 can be suppressed.
  • the connecting means for connecting the swing arm 101 and the movable portion 113 of the rotary damper 102 is different from the connecting means employed in the first embodiment. .
  • the connecting means employed in this embodiment includes a joint 126.
  • the joint 126 includes a first ball joint 127 and a second ball joint 128.
  • the first ball joint 127 includes a ball stud 129 including a ball portion 129, a shaft portion 130 protruding from the ball portion 129, and a socket 132 that contacts the ball portion 129 by a ball pair. It is configured.
  • the second ball joint 128 has the same configuration as the first ball joint 127.
  • the socket 132 of the first ball joint 127 and the socket 133 of the second ball joint 128 are connected by a joint 134, and the two sockets 132, 133 and the joint 134 are one component. As a single unit.
  • the first ball joint 127 is connected to the swing arm 101. More specifically, the ball stud 131 of the first ball joint 127 is attached to a flange 135 provided on the bridge 106 of the swing arm 101.
  • the second ball joint 128 is connected to the movable portion 113 of the rotary damper 102. More specifically, the ball stud 136 of the second ball joint 128 is attached to a flange 137 provided on the movable portion 113.
  • the rotation of the swing arm 101 is transmitted to the movable portion 113 by the joint 126.
  • the movable portion 113 rotates around the non-movable portion 112 in conjunction with the rotation of the swing arm 101.
  • the oil flow resistance generated when the movable portion 113 rotates serves as a braking force that decelerates the rotation of the movable portion 113.
  • This braking force is transmitted to the bridge 106 by the joint 126.
  • the joint 126 can be twisted even if the swing arm 101 is twisted. Can be absorbed.
  • the coil spring 103 and the joint 126 are both disposed on the upper surface side of the swing arm 101.
  • the coil spring 103 is disposed on the upper surface of the swing arm 101.
  • the joint 126 may be disposed on the lower surface side of the swing arm 101.
  • the connecting means for connecting the swing arm 101 and the movable portion 113 of the rotary damper 102 is used in the first and second embodiments. And different.
  • the connecting means employed in this embodiment includes a ball joint 138.
  • the basic configuration of the ball joint 138 is the same as that of the first ball joint 127 described above.
  • the ball joint 138 includes a ball stud including a ball portion, a shaft portion protruding from the ball portion, and a socket 139 that contacts the ball portion by a ball pair.
  • the ball stud of the ball joint 138 is connected to the swing arm 101 (more specifically, the joint 140 provided on the bridge 106), and the socket 139 of the ball joint 138 is connected to the movable portion 113 of the rotary damper 102. Has been.
  • the ball joint 138 can absorb the twist even when the swing arm 101 is twisted.
  • the swing arm 101 is different from the swing arm 101 employed in the first to third embodiments.
  • the swing arm 101 employed in this embodiment includes an arm 141 that supports only one side of the axle.
  • the distal end portion of the arm 141 is rotatably connected to the pivot shaft 108.
  • a hole 142 is formed in the rear end portion of the arm 141, and a rear wheel axle is inserted into the hole 142.
  • the swing arm 101 supports only one side of the rear axle by an arm 141.
  • the swing arm 101 employed in this embodiment is more likely to be twisted than the swing arm that supports both sides of the axle.
  • the connecting means employed in this embodiment has the same configuration as the connecting means employed in Embodiment 2, even if the swing arm 101 is twisted, the movable portion 113 of the rotary damper 102 is smoothly rotated. It is possible to make it.
  • it can replace with the connection means employ

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Axle Suspensions And Sidecars For Cycles (AREA)
  • Vehicle Body Suspensions (AREA)

Abstract

　The present invention provides a rear suspension for a motorcycle, provided with: a non-movable part (112) provided with a swing arm (101) turning about a pivot shaft (108) and a rotary damper (102) for mitigating an impact generated during turning of the swing arm (101), the rotary damper (102) being arranged coaxially with respect to the pivot shaft (108); a movable part (113) that rotates around the non-movable part (112) in linkage with the turning of the swing arm (101); and oil (114) packed between the movable part (113) and the non-movable part (112). The present invention can be readily assembled. The present invention also makes it possible to reduce the size of a rear suspension.

Description

自動二輪車のリヤサスペンションRear suspension of motorcycle
　本発明は、自動二輪車のリヤサスペンションに関する。 The present invention relates to a rear suspension of a motorcycle.
　従来、ピボットシャフトを中心として回動するスイングアームと、該スイングアームの回動時に発生する衝撃を緩和する緩衝機構と、前記スイングアームをもとの位置に復帰させる復元機構とを備えた自動二輪車のリヤサスペンションが知られている。 2. Description of the Related Art Conventionally, a motorcycle provided with a swing arm that pivots about a pivot shaft, a buffer mechanism that alleviates an impact that occurs when the swing arm rotates, and a restoring mechanism that returns the swing arm to its original position. The rear suspension is known.
　例えば、特開平６－１８３３８６号公報に記載されたリヤサスペンション（従来技術）は、ロータリーダンパを用いた緩衝機構と、トーションバーを用いた復元機構とを備えている。 For example, a rear suspension (conventional technology) described in Japanese Patent Application Laid-Open No. 6-183386 includes a buffer mechanism using a rotary damper and a restoration mechanism using a torsion bar.
　従来技術のロータリーダンパは、ダンパステーに固定されるダンパシャフトと、該ダンパシャフトの周りで回転するダンパボディと、前記ダンパシャフトと前記ダンパボディとの間に充填されるオイルとを備えている。ダンパシャフトを支持するダンパステーは、ピボットシャフトと異なる位置に設けられている。 The conventional rotary damper includes a damper shaft that is fixed to a damper stay, a damper body that rotates around the damper shaft, and oil that is filled between the damper shaft and the damper body. The damper stay supporting the damper shaft is provided at a position different from the pivot shaft.
　従来技術において、ダンパシャフトはロータリーダンパを構成する非可動部であり、ダンパボディはロータリーダンパを構成する可動部である。従来技術のように非可動部とピボットシャフトが同軸上に配置されていない構成では、非可動部とピボットシャフトが平行に配置される。しかしながら、可動部を非可動部の周りで円滑に回転させるためには、非可動部の水平度がピボットシャフトの水平度と等しくなるように非可動部を配置することが必要である。したがって、従来技術では、ロータリーダンパに関連する周辺部品に対して高度な組立精度が要求される。また、非可動部とピボットシャフトが同軸上に配置されていない構成は、リヤサスペンションの大型化を招来する。 In the prior art, the damper shaft is a non-movable part that constitutes a rotary damper, and the damper body is a movable part that constitutes a rotary damper. In the configuration in which the non-movable part and the pivot shaft are not coaxially arranged as in the prior art, the non-movable part and the pivot shaft are arranged in parallel. However, in order to smoothly rotate the movable part around the non-movable part, it is necessary to dispose the non-movable part so that the level of the non-movable part is equal to the level of the pivot shaft. Therefore, in the prior art, a high degree of assembly accuracy is required for peripheral parts related to the rotary damper. In addition, the configuration in which the non-movable part and the pivot shaft are not arranged coaxially causes an increase in the size of the rear suspension.
　従来技術では、ロータリーダンパの作用によって引き起こされるスイングアームのねじれを防止するために、スイングアームと可動部を連結するジョイントがスイングアームの幅方向中央部に連結されている。しかしながら、スイングアームのねじれは、例えば、走行時に後輪の車軸が傾くことによって発生し得る。従来技術では、スイングアームのねじれが発生したときに、可動部の回転に障害が発生し、それによりロータリーダンパが破損するおそれがある。 In the conventional technology, in order to prevent the twist of the swing arm caused by the action of the rotary damper, a joint that connects the swing arm and the movable portion is connected to the center portion in the width direction of the swing arm. However, the swing arm can be twisted, for example, when the axle of the rear wheel is tilted during traveling. In the prior art, when the swing arm is twisted, there is a risk that the rotation of the movable part may be disturbed, and the rotary damper may be damaged.
　従来技術では、ロータリーダンパの可動部とスイングアームが複数の部品（即ち、ダンパブラケット、スイングアームブラケット及びリンク）を介して連結されている。しかしながら、このような構成は、部品点数及び組立工数を増大させる。 In the prior art, the movable part of the rotary damper and the swing arm are connected via a plurality of parts (that is, a damper bracket, a swing arm bracket and a link). However, such a configuration increases the number of parts and the number of assembly steps.
　従来技術では、トーションバーとスイングアームが一対のリンク機構を介して連結されている。一対のリンク機構は、それぞれ、トルクアーム、トルクロッド及びトルクブラケットを備えている。しかしながら、このような構成は、部品点数及び組立工数を増大させる。 In the prior art, the torsion bar and the swing arm are connected via a pair of link mechanisms. Each of the pair of link mechanisms includes a torque arm, a torque rod, and a torque bracket. However, such a configuration increases the number of parts and the number of assembly steps.
特開平６－１８３３８６号公報JP-A-6-183386
　本発明が解決しようとする第１の課題は、組立が容易で、かつ小型化を図ることが可能な自動二輪車のリヤサスペンションを提供することである。第２の課題は、たとえスイングアームのねじれが発生した場合でも、ロータリーダンパの可動部を円滑に回転させることが可能な自動二輪車のリヤサスペンションを提供することである。第３の課題は、後輪の交換が容易な自動二輪車のリヤサスペンションを提供することである。第４の課題は、後輪の交換が容易で、かつたとえスイングアームのねじれが発生した場合でも、ロータリーダンパの可動部を円滑に回転させることが可能な自動二輪車のリヤサスペンションを提供することである。第５の課題は、部品点数及び組立工数を削減することが可能な自動二輪車のリヤサスペンションを提供することである。 A first problem to be solved by the present invention is to provide a rear suspension of a motorcycle that can be easily assembled and can be reduced in size. A second problem is to provide a motorcycle rear suspension capable of smoothly rotating a movable portion of a rotary damper even when a swing arm is twisted. A third problem is to provide a rear suspension for a motorcycle in which rear wheels can be easily replaced. A fourth problem is to provide a rear suspension for a motorcycle in which rear wheels can be easily exchanged and a movable part of a rotary damper can be smoothly rotated even when a swing arm is twisted. is there. The fifth problem is to provide a motorcycle rear suspension capable of reducing the number of parts and the number of assembly steps.
　上記課題を解決するため、本発明は、以下の自動二輪車のリヤサスペンションを提供する。
　１．ピボットシャフトを中心として回動するスイングアームと、該スイングアームの回動時に発生する衝撃を緩和するロータリーダンパとを備え、前記ロータリーダンパが、前記ピボットシャフトと同軸上に配置される非可動部と、前記スイングアームの回動に連動して前記非可動部の周りで回転する可動部と、該可動部と前記非可動部との間に充填されるオイルとを備える自動二輪車のリヤサスペンション。
　２．前記スイングアームと前記可動部を連結する連結手段を備え、該連結手段が、前記スイングアーム及び前記可動部のうちのいずれか一方に連結されるボールスタッドと、該ボールスタッドと球対偶で接触し、前記スイングアーム及び前記可動部のうちのいずれか他方に連結されるソケットとを含んで構成されるボールジョイントを備える前記１に記載の自動二輪車のリヤサスペンション。
　３．前記スイングアームと前記可動部を連結する連結手段を備え、該連結手段が、前記スイングアームに連結される第１ボールジョイントと、前記可動部に連結される第２ボールジョイントとを含んで構成されるジョイントを備える前記１に記載の自動二輪車のリヤサスペンション。
　４．前記スイングアームが、車軸の片側のみを支持するアームを備える前記１に記載の自動二輪車のリヤサスペンション。
　５．前記スイングアームと前記可動部を連結する連結手段を備え、該連結手段が、前記スイングアーム及び前記可動部のうちのいずれか一方に連結されるボールスタッドと、該ボールスタッドと球対偶で接触し、前記スイングアーム及び前記可動部のうちのいずれか他方に連結されるソケットとを含んで構成されるボールジョイントを備える前記４に記載の自動二輪車のリヤサスペンション。
　６．前記スイングアームと前記可動部を連結する連結手段を備え、該連結手段が、前記スイングアームに連結される第１ボールジョイントと、前記可動部に連結される第２ボールジョイントとを含んで構成されるジョイントを備える前記４に記載の自動二輪車のリヤサスペンション。
　７．前記スイングアームと前記可動部を連結する連結手段を備え、該連結手段が、前記スイングアーム及び前記可動部の両方に取り付けられる単一の部品を備える前記１に記載の自動二輪車のリヤサスペンション。
　８．前記スイングアームをもとの位置に復帰させるコイルスプリングと、前記スイングアームに設けられ、前記コイルスプリングを支持する支持具とを備える前記１に記載の自動二輪車のリヤサスペンション。 In order to solve the above problems, the present invention provides the following rear suspension of a motorcycle.
1. A swing arm that pivots about a pivot shaft; and a rotary damper that alleviates an impact that occurs when the swing arm pivots, wherein the rotary damper is disposed on the same axis as the pivot shaft. A rear suspension for a motorcycle, comprising: a movable part that rotates around the non-movable part in conjunction with rotation of the swing arm; and oil that is filled between the movable part and the non-movable part.
2. A connecting means for connecting the swing arm and the movable part, the connecting means contacting the ball stud connected to one of the swing arm and the movable part; The rear suspension for a motorcycle according to claim 1, further comprising a ball joint including a socket connected to one of the swing arm and the movable portion.
3. A connecting means for connecting the swing arm and the movable part is provided, and the connecting means includes a first ball joint connected to the swing arm and a second ball joint connected to the movable part. The rear suspension of a motorcycle according to the above 1, further comprising a joint.
4). 2. The motorcycle rear suspension according to claim 1, wherein the swing arm includes an arm that supports only one side of an axle.
5. A connecting means for connecting the swing arm and the movable part, the connecting means contacting the ball stud connected to one of the swing arm and the movable part; 5. The rear suspension for a motorcycle according to claim 4, further comprising a ball joint configured to include a socket connected to one of the swing arm and the movable portion.
6). A connecting means for connecting the swing arm and the movable part is provided, and the connecting means includes a first ball joint connected to the swing arm and a second ball joint connected to the movable part. The motorcycle's rear suspension according to 4, wherein the motorcycle has a joint.
7). 2. The motorcycle rear suspension according to claim 1, further comprising coupling means for coupling the swing arm and the movable part, wherein the coupling means comprises a single component attached to both the swing arm and the movable part.
8). The rear suspension for a motorcycle according to claim 1, further comprising: a coil spring that returns the swing arm to an original position; and a support that is provided on the swing arm and supports the coil spring.
　前記１に記載の本発明は、ピボットシャフトと同軸上に配置される非可動部を備えるため、非可動部の軸心がピボットシャフトの軸心と一致している。そのため、高度な組立精度が要求されない。したがって、この発明は、組立が容易である。また、この発明は、非可動部とピボットシャフトが同軸上に配置される構成であるため、リヤサスペンションの小型化を図ることが可能である。
　前記２に記載の本発明は、連結手段が、スイングアーム及び可動部のうちのいずれか一方に連結されるボールスタッドと、該ボールスタッドと球対偶で接触し、スイングアーム及び可動部のうちのいずれか他方に連結されるソケットとを含んで構成されるボールジョイントを備えるため、連結手段によってスイングアームのねじれを吸収することができる。したがって、この発明は、たとえスイングアームのねじれが発生した場合でも、可動部を円滑に回転させることが可能である。
　前記３に記載の本発明は、連結手段が、スイングアームに連結される第１ボールジョイントと、可動部に連結される第２ボールジョイントとを含んで構成されるジョイントを備えるため、連結手段によってスイングアームのねじれを吸収することができる。したがって、この発明は、たとえスイングアームのねじれが発生した場合でも、可動部を円滑に回転させることが可能である。
　前記４に記載の本発明は、スイングアームが、車軸の片側のみを支持するアームを備えるため、後輪の交換が容易である。
　前記５に記載の本発明は、連結手段が、スイングアーム及び可動部のうちのいずれか一方に連結されるボールスタッドと、該ボールスタッドと球対偶で接触し、スイングアーム及び可動部のうちのいずれか他方に連結されるソケットとを含んで構成されるボールジョイントを備えるため、連結手段によってスイングアームのねじれを吸収することができる。したがって、この発明は、たとえスイングアームのねじれが発生した場合でも、可動部を円滑に回転させることが可能である。
　前記６に記載の本発明は、連結手段が、スイングアームに連結される第１ボールジョイントと、可動部に連結される第２ボールジョイントとを含んで構成されるジョイントを備えるため、連結手段によってスイングアームのねじれを吸収することができる。したがって、この発明は、たとえスイングアームのねじれが発生した場合でも、可動部を円滑に回転させることが可能である。
　前記７に記載の本発明は、連結手段が、スイングアーム及び可動部の両方に取り付けられる単一の部品を備えるため、スイングアームと可動部が単一の部品を介して連結されることになる。したがって、この発明は、スイングアームと可動部が複数の部品を介して連結された従来技術と比較して部品点数及び組立工数を削減することが可能である。
　前記８に記載の本発明は、スイングアームに設けられ、コイルスプリングを支持する支持具を備えるため、コイルスプリングとスイングアームが支持具を介して連結されることになる。したがって、この発明は、トーションバーとスイングアームが一対のリンク機構を介して連結された従来技術と比較して部品点数及び組立工数を削減することが可能である。 Since the first aspect of the present invention includes the non-movable portion arranged coaxially with the pivot shaft, the axis of the non-movable portion coincides with the axis of the pivot shaft. Therefore, high assembly accuracy is not required. Therefore, the present invention is easy to assemble. Further, according to the present invention, since the non-movable part and the pivot shaft are arranged coaxially, the rear suspension can be downsized.
According to the second aspect of the present invention, the connecting means includes a ball stud that is connected to one of the swing arm and the movable part, and a ball stud that contacts the ball stud with a ball pair. Since the ball joint including the socket connected to one of the other is provided, the twist of the swing arm can be absorbed by the connecting means. Therefore, the present invention can smoothly rotate the movable part even when the swing arm is twisted.
According to the third aspect of the present invention, the connecting means includes a joint including a first ball joint connected to the swing arm and a second ball joint connected to the movable part. The twist of the swing arm can be absorbed. Therefore, the present invention can smoothly rotate the movable part even when the swing arm is twisted.
In the present invention described in 4 above, since the swing arm includes an arm that supports only one side of the axle, the rear wheel can be easily replaced.
According to the fifth aspect of the present invention, the connecting means includes a ball stud that is connected to one of the swing arm and the movable part, and a ball stud that contacts the ball stud with a ball pair. Since the ball joint including the socket connected to one of the other is provided, the twist of the swing arm can be absorbed by the connecting means. Therefore, the present invention can smoothly rotate the movable part even when the swing arm is twisted.
In the present invention described in 6 above, since the connecting means includes a joint including a first ball joint connected to the swing arm and a second ball joint connected to the movable part, The twist of the swing arm can be absorbed. Therefore, the present invention can smoothly rotate the movable part even when the swing arm is twisted.
In the present invention described in 7 above, since the connecting means includes a single part attached to both the swing arm and the movable part, the swing arm and the movable part are connected through a single part. . Therefore, according to the present invention, the number of parts and the number of assembly steps can be reduced as compared with the prior art in which the swing arm and the movable part are connected via a plurality of parts.
Since the present invention described in 8 is provided with a support that is provided on the swing arm and supports the coil spring, the coil spring and the swing arm are connected via the support. Therefore, according to the present invention, the number of parts and the number of assembly steps can be reduced as compared with the prior art in which the torsion bar and the swing arm are connected via a pair of link mechanisms.
図１は、本発明の実施例１に係る自動二輪車のリヤサスペンションを示す概略斜視図である。FIG. 1 is a schematic perspective view showing a rear suspension of a motorcycle according to a first embodiment of the present invention. 図２は、本発明の実施例１に係る自動二輪車のリヤサスペンションを示す概略左側面図である。FIG. 2 is a schematic left side view showing the rear suspension of the motorcycle according to the first embodiment of the present invention. 図３は、図２のＡ－Ａ部断面図である。3 is a cross-sectional view taken along a line AA in FIG. 図４は、ロータリーダンパの断面図である。FIG. 4 is a sectional view of the rotary damper. 図５は、本発明の実施例１に係る自動二輪車のリヤサスペンションを示す概略底面図である。FIG. 5 is a schematic bottom view showing the rear suspension of the motorcycle according to the first embodiment of the present invention. 図６は、本発明の実施例２に係る自動二輪車のリヤサスペンションを示す概略斜視図である。FIG. 6 is a schematic perspective view showing a rear suspension of the motorcycle according to the second embodiment of the present invention. 図７は、本発明の実施例２に係る自動二輪車のリヤサスペンションを示す概略左側面図である。FIG. 7 is a schematic left side view showing the rear suspension of the motorcycle according to the second embodiment of the present invention. 図８は、図７のＢ－Ｂ部断面図である。8 is a cross-sectional view taken along the line BB in FIG. 図９は、ジョイントの斜視図である。FIG. 9 is a perspective view of the joint. 図１０は、第１ボールジョイントの断面図である。FIG. 10 is a cross-sectional view of the first ball joint. 図１１は、本発明の実施例３に係る自動二輪車のリヤサスペンションを示す概略斜視図である。FIG. 11 is a schematic perspective view showing the rear suspension of the motorcycle according to the third embodiment of the present invention. 図１２は、本発明の実施例４に係る自動二輪車のリヤサスペンションを示す概略斜視図である。FIG. 12 is a schematic perspective view showing the rear suspension of the motorcycle according to the fourth embodiment of the present invention.
　以下、本発明の実施例に基づいて本発明の実施形態をさらに具体的に説明するが、本発明の技術的範囲は以下の説明の内容に限定されるものではない。 Hereinafter, the embodiment of the present invention will be described more specifically based on examples of the present invention, but the technical scope of the present invention is not limited to the contents of the following description.
　図１に示したように、本発明の実施例１に係る自動二輪車のリヤサスペンションは、スイングアーム１０１と、ロータリーダンパ１０２と、コイルスプリング１０３とを備えている。 As shown in FIG. 1, the rear suspension of the motorcycle according to the first embodiment of the present invention includes a swing arm 101, a rotary damper 102, and a coil spring 103.
　スイングアーム１０１は、一対のアーム（即ち、第１アーム１０４及び第２アーム１０５）と、第１アーム１０４と第２アーム１０５を連結するブリッジ１０６とを備えている。 The swing arm 101 includes a pair of arms (that is, the first arm 104 and the second arm 105), and a bridge 106 that connects the first arm 104 and the second arm 105.
　図３に示したように、スイングアーム１０１は、第１アーム１０４の先端部及び第２アーム１０５の先端部がそれぞれ車体フレーム１０７に固定されたピボットシャフト１０８に回動可能に連結されることによって、ピボットシャフト１０８に支持されている。 As shown in FIG. 3, the swing arm 101 is configured such that the distal end portion of the first arm 104 and the distal end portion of the second arm 105 are rotatably connected to a pivot shaft 108 fixed to the vehicle body frame 107. , Supported by the pivot shaft 108.
　図１に示したように、第１アーム１０４の後端部及び第２アーム１０５の後端部には、それぞれ穴１０９，１１０が形成されており、これらの穴１０９，１１０には、それぞれ後輪１１１の車軸が挿通される。スイングアーム１０１は、第１アーム１０４及び第２アーム１０５によって、後輪１１１の車軸の両側を支持するものである。但し、スイングアーム１０１は、後輪１１１の車軸の片側のみを支持するもの（実施例４及び図１２参照）であっても良い。 As shown in FIG. 1, holes 109 and 110 are formed in the rear end portion of the first arm 104 and the rear end portion of the second arm 105, respectively. The axle of the wheel 111 is inserted. The swing arm 101 supports both sides of the axle of the rear wheel 111 by the first arm 104 and the second arm 105. However, the swing arm 101 may support only one side of the axle of the rear wheel 111 (see the fourth embodiment and FIG. 12).
　図４に示したように、ロータリーダンパ１０２は、非可動部１１２と、可動部１１３と、オイル１１４とを備えている。 As shown in FIG. 4, the rotary damper 102 includes a non-movable part 112, a movable part 113, and an oil 114.
　非可動部１１２は、中空の軸部１１５と、軸部１１５から外へ向かって突出する第１ベーン１１６とを備えている。軸部１１５の内周面には、スプライン１１７が形成されている。 The non-movable part 112 includes a hollow shaft part 115 and a first vane 116 protruding outward from the shaft part 115. A spline 117 is formed on the inner peripheral surface of the shaft portion 115.
　可動部１１３は、筒状の周壁１１８と、周壁１１８から内へ向かって突出する第２ベーン１１９とを備えている。オイル１１４は、非可動部１１２と可動部１１３との間に充填されている。 The movable portion 113 includes a cylindrical peripheral wall 118 and a second vane 119 that protrudes inward from the peripheral wall 118. Oil 114 is filled between the non-movable part 112 and the movable part 113.
　図３に示したように、ロータリーダンパ１０２の非可動部１１２は、ピボットシャフト１０８と同軸上に配置されている。非可動部１１２とピボットシャフト１０８との間に介在するブッシュ１２０は、車体フレーム１０７に固定されている。ブッシュ１２０を軸方向に貫通する穴には、ピボットシャフト１０８が挿通される。ブッシュ１２０は、ピボットシャフト１０８と同軸上に配置されており、ブッシュ１２０の外周面には、スプラインが形成されている。非可動部１１２は、ブッシュ１２０に形成されたスプラインと非可動部１１２のスプライン１１７とを組み合わせることによって、ブッシュ１２０に固定されている。この構成によって、非可動部１１２の軸心がピボットシャフト１０８の軸心と一致する。そのため、本実施例は、高度な組立精度が要求されない。したがって、本実施例は、組立が容易である。また、本実施例は、非可動部１１２とピボットシャフト１０８が同軸上に配置される構成であるため、リヤサスペンションの小型化を図ることができる。 As shown in FIG. 3, the non-movable part 112 of the rotary damper 102 is arranged coaxially with the pivot shaft 108. A bush 120 interposed between the non-movable part 112 and the pivot shaft 108 is fixed to the vehicle body frame 107. A pivot shaft 108 is inserted through a hole that passes through the bush 120 in the axial direction. The bush 120 is arranged coaxially with the pivot shaft 108, and a spline is formed on the outer peripheral surface of the bush 120. The non-movable part 112 is fixed to the bush 120 by combining a spline formed on the bush 120 and a spline 117 of the non-movable part 112. With this configuration, the axis of the non-movable part 112 coincides with the axis of the pivot shaft 108. Therefore, this embodiment does not require a high level of assembly accuracy. Therefore, this embodiment is easy to assemble. Moreover, since the non-movable part 112 and the pivot shaft 108 are coaxially arranged in this embodiment, the rear suspension can be downsized.
　図２及び図５に示したように、ロータリーダンパ１０２の可動部１１３は、連結手段を介してスイングアーム１０１に連結される。本実施例は、連結手段として、スイングアーム１０１及び可動部１１３の両方に取り付けられる単一の部品（即ち、１個のプレート１２１）を採用しているが、これに限定されない。 2 and 5, the movable portion 113 of the rotary damper 102 is connected to the swing arm 101 via a connecting means. Although the present embodiment employs a single component (that is, one plate 121) attached to both the swing arm 101 and the movable portion 113 as the connecting means, it is not limited to this.
　プレート１２１は、一端側が可動部１１３にボルトで固定され、他端側がスイングアーム１０１のブリッジ１０６に溶接で固定されている。本実施例は、スイングアーム１０１と可動部１１３がスイングアーム１０１及び可動部１１３の両方に取り付けられる１個のプレート１２１を介して連結されるため、スイングアームと可動部が複数の部品を介して連結された従来技術と比較して部品点数及び組立工数を削減することができる。 The plate 121 has one end fixed to the movable portion 113 with a bolt and the other end fixed to the bridge 106 of the swing arm 101 by welding. In this embodiment, since the swing arm 101 and the movable portion 113 are connected via a single plate 121 attached to both the swing arm 101 and the movable portion 113, the swing arm and the movable portion are connected via a plurality of components. The number of parts and the number of assembling steps can be reduced as compared with the related art.
　スイングアーム１０１の回動は、プレート１２１によって可動部１１３に伝達される。この構成によって、可動部１１３は、スイングアーム１０１の回動に連動して非可動部１１２の周りで回転する。可動部１１３の回転によって第２ベーン１１９がオイルを加圧し、これにより、オイル１１４が非可動部１１２と可動部１１３との間の隙間を通って流動する。そして、この際に発生するオイル１１４の流動抵抗が可動部１１３の回転を減速させる制動力となる。この制動力は、プレート１２１によってブリッジ１０６に伝達される。この構成によって、スイングアーム１０１の回動が減速されるので、スイングアーム１０１の回動時に発生する衝撃が緩和される。 The rotation of the swing arm 101 is transmitted to the movable portion 113 by the plate 121. With this configuration, the movable portion 113 rotates around the non-movable portion 112 in conjunction with the rotation of the swing arm 101. The second vane 119 pressurizes the oil by the rotation of the movable portion 113, so that the oil 114 flows through the gap between the non-movable portion 112 and the movable portion 113. The flow resistance of the oil 114 generated at this time becomes a braking force that decelerates the rotation of the movable portion 113. This braking force is transmitted to the bridge 106 by the plate 121. With this configuration, since the swing of the swing arm 101 is decelerated, the impact generated when the swing arm 101 is rotated is reduced.
　なお、プレート１２１は、スイングアーム１０１の幅方向中央部（即ち、第１アーム１０４と第２アーム１０５の中間位置であるブリッジ１０６の中央部）に連結されることが好ましい。それにより、ロータリーダンパ１０２の制動力が一対のアーム１０４，１０５に均等に作用するので、スイングアーム１０１のねじれを抑制することができる。 The plate 121 is preferably connected to the center portion in the width direction of the swing arm 101 (that is, the center portion of the bridge 106 that is an intermediate position between the first arm 104 and the second arm 105). Thereby, the braking force of the rotary damper 102 acts evenly on the pair of arms 104 and 105, so that the twist of the swing arm 101 can be suppressed.
　図１及び図２に示したように、コイルスプリング１０３は、スイングアーム１０１に設けられる支持具（即ち、第１支持具１２２）によって支持されている。第１支持具１２２は、スイングアーム１０１のブリッジ１０６に設けられたブラケット１２３に回動可能に取り付けられている。 As shown in FIGS. 1 and 2, the coil spring 103 is supported by a support provided on the swing arm 101 (ie, the first support 122). The first support 122 is rotatably attached to a bracket 123 provided on the bridge 106 of the swing arm 101.
　本実施例は、コイルスプリング１０３の一方の端部とスイングアーム１０１のブリッジ１０６が第１支持具１２２を介して連結されるため、トーションバーとスイングアームが一対のリンク機構を介して連結された従来技術と比較して部品点数及び組立工数を削減することが可能である。 In this embodiment, since one end of the coil spring 103 and the bridge 106 of the swing arm 101 are connected via the first support 122, the torsion bar and the swing arm are connected via a pair of link mechanisms. Compared with the prior art, the number of parts and the number of assembly steps can be reduced.
　図１及び図２に示したように、コイルスプリング１０３の他方の端部は、第２支持具１２４によって支持されている。第２支持具１２４は、車体フレーム１０７に設けられたブラケット１２５に回動可能に取り付けられている。 1 and 2, the other end of the coil spring 103 is supported by the second support 124. The second support 124 is rotatably attached to a bracket 125 provided on the vehicle body frame 107.
　このように配置されたコイルスプリング１０３は、スイングアーム１０１の回動に連動して伸縮し、その際に発生するコイルスプリング１０３の弾性力がスイングアーム１０１をもとの位置に復帰させる。 The coil spring 103 arranged in this manner expands and contracts in conjunction with the rotation of the swing arm 101, and the elastic force of the coil spring 103 generated at that time returns the swing arm 101 to its original position.
　なお、第１支持具１２２が取り付けられるブラケット１２３は、スイングアーム１０１の幅方向中央部（即ち、第１アーム１０４と第２アーム１０５の中間位置であるブリッジ１０６の中央部）に設けられることが好ましい。それにより、コイルスプリング１０３の弾性力が一対のアーム１０４，１０５に均等に作用するので、スイングアーム１０１のねじれを抑制することができる。 The bracket 123 to which the first support 122 is attached may be provided at the center in the width direction of the swing arm 101 (that is, the center of the bridge 106 that is an intermediate position between the first arm 104 and the second arm 105). preferable. Thereby, since the elastic force of the coil spring 103 acts equally on the pair of arms 104 and 105, the twist of the swing arm 101 can be suppressed.
　図６に示したように、本発明の実施例２に係る自動二輪車のリヤサスペンションは、スイングアーム１０１とロータリーダンパ１０２の可動部１１３を連結する連結手段が実施例１で採用した連結手段と異なる。 As shown in FIG. 6, in the rear suspension of the motorcycle according to the second embodiment of the present invention, the connecting means for connecting the swing arm 101 and the movable portion 113 of the rotary damper 102 is different from the connecting means employed in the first embodiment. .
　図９に示したように、本実施例で採用した連結手段は、ジョイント１２６を備えている。ジョイント１２６は、第１ボールジョイント１２７と、第２ボールジョイント１２８とを備えている。 As shown in FIG. 9, the connecting means employed in this embodiment includes a joint 126. The joint 126 includes a first ball joint 127 and a second ball joint 128.
　図１０に示したように、第１ボールジョイント１２７は、ボール部１２９と、ボール部１２９から突出する軸部１３０とを備えるボールスタッド１３１と、ボール部１２９と球対偶で接触するソケット１３２とを有して構成される。第２ボールジョイント１２８は、第１ボールジョイント１２７と同じ構成である。 As shown in FIG. 10, the first ball joint 127 includes a ball stud 129 including a ball portion 129, a shaft portion 130 protruding from the ball portion 129, and a socket 132 that contacts the ball portion 129 by a ball pair. It is configured. The second ball joint 128 has the same configuration as the first ball joint 127.
　図９に示したように、第１ボールジョイント１２７のソケット１３２と第２ボールジョイント１２８のソケット１３３は、継手１３４で連結されており、２つのソケット１３２，１３３及び継手１３４は、１個の部品として一体に成形されている。 As shown in FIG. 9, the socket 132 of the first ball joint 127 and the socket 133 of the second ball joint 128 are connected by a joint 134, and the two sockets 132, 133 and the joint 134 are one component. As a single unit.
　図６に示したように、第１ボールジョイント１２７は、スイングアーム１０１に連結される。より具体的には、第１ボールジョイント１２７のボールスタッド１３１がスイングアーム１０１のブリッジ１０６に設けられたフランジ１３５に取り付けられている。 As shown in FIG. 6, the first ball joint 127 is connected to the swing arm 101. More specifically, the ball stud 131 of the first ball joint 127 is attached to a flange 135 provided on the bridge 106 of the swing arm 101.
　図７及び図８に示したように、第２ボールジョイント１２８は、ロータリーダンパ１０２の可動部１１３に連結される。より具体的には、第２ボールジョイント１２８のボールスタッド１３６が可動部１１３に設けられたフランジ１３７に取り付けられている。 7 and 8, the second ball joint 128 is connected to the movable portion 113 of the rotary damper 102. More specifically, the ball stud 136 of the second ball joint 128 is attached to a flange 137 provided on the movable portion 113.
　スイングアーム１０１の回動は、ジョイント１２６によって可動部１１３に伝達される。この構成によって、可動部１１３は、スイングアーム１０１の回動に連動して非可動部１１２の周りで回転する。そして、可動部１１３が回転する際に発生するオイルの流動抵抗が可動部１１３の回転を減速させる制動力となる。この制動力は、ジョイント１２６によってブリッジ１０６に伝達される。この構成によって、スイングアーム１０１の回動が減速されるので、スイングアーム１０１の回動時に発生する衝撃が緩和される。 The rotation of the swing arm 101 is transmitted to the movable portion 113 by the joint 126. With this configuration, the movable portion 113 rotates around the non-movable portion 112 in conjunction with the rotation of the swing arm 101. The oil flow resistance generated when the movable portion 113 rotates serves as a braking force that decelerates the rotation of the movable portion 113. This braking force is transmitted to the bridge 106 by the joint 126. With this configuration, since the swing of the swing arm 101 is decelerated, the impact generated when the swing arm 101 is rotated is reduced.
　ジョイント１２６は、第１ボールジョイント１２７のボールスタッド１３１及び第２ボールジョイント１２８のボールスタッド１３６が、ともに任意の方向に回転可能であるため、たとえスイングアーム１０１にねじれが発生した場合でも、そのねじれを吸収することができる。 Since the ball stud 131 of the first ball joint 127 and the ball stud 136 of the second ball joint 128 can both rotate in any direction, the joint 126 can be twisted even if the swing arm 101 is twisted. Can be absorbed.
　即ち、スイングアーム１０１にねじれが発生し、ピボットシャフト１０８に対するブリッジ１０６の傾きが生じると、その傾きに対応して第１ボールジョイント１２７のボールスタッド１３１が回転する。この際、たとえボールスタッド１３１の回転に伴って第１ボールジョイント１２７のソケット１３２が傾いても、第２ボールジョイント１２８のソケット１３３が第２ボールジョイント１２８のボールスタッド１３６に対して相対的に回転するため、ロータリーダンパ１０２の可動部１１３に対して、スイングアーム１０１のねじれの影響が及ばない。したがって、本実施例は、たとえスイングアーム１０１のねじれが発生した場合でも、ロータリーダンパ１０２の可動部１１３を円滑に回転させることができる。 That is, when the swing arm 101 is twisted and the bridge 106 is inclined with respect to the pivot shaft 108, the ball stud 131 of the first ball joint 127 is rotated in accordance with the inclination. At this time, even if the socket 132 of the first ball joint 127 is tilted as the ball stud 131 rotates, the socket 133 of the second ball joint 128 rotates relative to the ball stud 136 of the second ball joint 128. Therefore, the influence of the twist of the swing arm 101 is not exerted on the movable portion 113 of the rotary damper 102. Therefore, in this embodiment, even when the swing arm 101 is twisted, the movable portion 113 of the rotary damper 102 can be smoothly rotated.
　なお、図６及び図７に示したように、本実施例では、コイルスプリング１０３とジョイント１２６がともにスイングアーム１０１の上面側に配置されているが、例えば、コイルスプリング１０３をスイングアーム１０１の上面側に配置し、ジョイント１２６をスイングアーム１０１の下面側に配置する構成を採用しても良い。 6 and 7, in this embodiment, the coil spring 103 and the joint 126 are both disposed on the upper surface side of the swing arm 101. For example, the coil spring 103 is disposed on the upper surface of the swing arm 101. The joint 126 may be disposed on the lower surface side of the swing arm 101.
　図１１に示したように、本発明の実施例３に係る自動二輪車のリヤサスペンションは、スイングアーム１０１とロータリーダンパ１０２の可動部１１３を連結する連結手段が実施例１及び２で採用した連結手段と異なる。 As shown in FIG. 11, in the rear suspension of the motorcycle according to the third embodiment of the present invention, the connecting means for connecting the swing arm 101 and the movable portion 113 of the rotary damper 102 is used in the first and second embodiments. And different.
　本実施例で採用した連結手段は、ボールジョイント１３８を備えている。ボールジョイント１３８の基本構成は、上記した第１ボールジョイント１２７と同じである。即ち、ボールジョイント１３８は、ボール部と、該ボール部から突出する軸部とを備えるボールスタッドと、ボール部と球対偶で接触するソケット１３９とを有して構成される。 The connecting means employed in this embodiment includes a ball joint 138. The basic configuration of the ball joint 138 is the same as that of the first ball joint 127 described above. In other words, the ball joint 138 includes a ball stud including a ball portion, a shaft portion protruding from the ball portion, and a socket 139 that contacts the ball portion by a ball pair.
　本実施例では、ボールジョイント１３８のボールスタッドがスイングアーム１０１（より詳細には、ブリッジ１０６に設けられた継手１４０）に連結され、ボールジョイント１３８のソケット１３９がロータリーダンパ１０２の可動部１１３に連結されている。 In this embodiment, the ball stud of the ball joint 138 is connected to the swing arm 101 (more specifically, the joint 140 provided on the bridge 106), and the socket 139 of the ball joint 138 is connected to the movable portion 113 of the rotary damper 102. Has been.
　なお、ボールジョイント１３８のボールスタッドを可動部１１３に連結し、ボールジョイント１３８のソケット１３９をスイングアーム１０１に連結する構成を採用することも可能である。 It is also possible to adopt a configuration in which the ball stud of the ball joint 138 is connected to the movable portion 113 and the socket 139 of the ball joint 138 is connected to the swing arm 101.
　ボールジョイント１３８は、ボールスタッドが任意の方向に回転可能であるため、たとえスイングアーム１０１にねじれが発生した場合でも、そのねじれを吸収することが可能である。 Since the ball stud 138 can rotate in any direction, the ball joint 138 can absorb the twist even when the swing arm 101 is twisted.
　即ち、スイングアーム１０１にねじれが発生し、ピボットシャフト１０８に対するブリッジ１０６の傾きが生じると、その傾きに対応してボールジョイント１３８のボールスタッドが回転する。そのため、ロータリーダンパ１０２の可動部１１３に対して、スイングアーム１０１のねじれの影響が及ばない。したがって、本実施例は、たとえスイングアーム１０１のねじれが発生した場合でも、ロータリーダンパ１０２の可動部１１３を円滑に回転させることができる。 That is, when the swing arm 101 is twisted and the bridge 106 is tilted with respect to the pivot shaft 108, the ball stud of the ball joint 138 rotates corresponding to the tilt. Therefore, the influence of twisting of the swing arm 101 does not affect the movable portion 113 of the rotary damper 102. Therefore, in this embodiment, even when the swing arm 101 is twisted, the movable portion 113 of the rotary damper 102 can be smoothly rotated.
　図１２に示したように、本発明の実施例４に係る自動二輪車のリヤサスペンションは、スイングアーム１０１が実施例１～３で採用したスイングアーム１０１と異なる。 As shown in FIG. 12, in the rear suspension of the motorcycle according to the fourth embodiment of the present invention, the swing arm 101 is different from the swing arm 101 employed in the first to third embodiments.
　本実施例で採用したスイングアーム１０１は、車軸の片側のみを支持するアーム１４１を備えている。アーム１４１の先端部は、ピボットシャフト１０８に回動可能に連結されている。アーム１４１の後端部には、穴１４２が形成されており、この穴１４２には、後輪の車軸が挿通される。このスイングアーム１０１は、アーム１４１によって、後輪の車軸の片側のみを支持するものである。 The swing arm 101 employed in this embodiment includes an arm 141 that supports only one side of the axle. The distal end portion of the arm 141 is rotatably connected to the pivot shaft 108. A hole 142 is formed in the rear end portion of the arm 141, and a rear wheel axle is inserted into the hole 142. The swing arm 101 supports only one side of the rear axle by an arm 141.
　この構成によれば、後輪の片側しかスイングアーム１０１が存在しないため、後輪の交換を容易に行うことが可能である。 According to this configuration, since the swing arm 101 exists only on one side of the rear wheel, it is possible to easily replace the rear wheel.
　本実施例で採用したスイングアーム１０１は、車軸の両側を支持するスイングアームと比較してねじれが生じ易い。しかしながら、本実施例で採用した連結手段は、実施例２で採用した連結手段と同じ構成であるため、たとえスイングアーム１０１のねじれが発生した場合でも、ロータリーダンパ１０２の可動部１１３を円滑に回転させることが可能である。なお、本実施例で採用した連結手段に代えて実施例１又は３で採用した連結手段を採用することも可能である。 The swing arm 101 employed in this embodiment is more likely to be twisted than the swing arm that supports both sides of the axle. However, since the connecting means employed in this embodiment has the same configuration as the connecting means employed in Embodiment 2, even if the swing arm 101 is twisted, the movable portion 113 of the rotary damper 102 is smoothly rotated. It is possible to make it. In addition, it can replace with the connection means employ | adopted by the present Example, and can also employ | adopt the connection means employ | adopted in Example 1 or 3.
　１０１　スイングアーム
　１０２　ロータリーダンパ
　１０３　コイルスプリング
　１０４　第１アーム
　１０５　第２アーム
　１０６　ブリッジ
　１０７　車体フレーム
　１０８　ピボットシャフト
　１０９　穴
　１１０　穴
　１１１　後輪
　１１２　非可動部
　１１３　可動部
　１１４　オイル
　１１５　軸部
　１１６　第１ベーン
　１１７　スプライン
　１１８　周壁
　１１９　第２ベーン
　１２０　ブッシュ
　１２１　プレート
　１２２　第１支持具
　１２３　ブラケット
　１２４　第２支持具
　１２５　ブラケット
　１２６　ジョイント
　１２７　第１ボールジョイント
　１２８　第２ボールジョイント
　１２９　ボール部
　１３０　軸部
　１３１　ボールスタッド
　１３２　ソケット
　１３３　ソケット
　１３４　継手
　１３５　フランジ
　１３６　ボールスタッド
　１３７　フランジ
　１３８　ボールジョイント
　１３９　ソケット
　１４０　継手
　１４１　アーム
　１４２　穴 DESCRIPTION OF SYMBOLS 101 Swing arm 102 Rotary damper 103 Coil spring 104 1st arm 105 2nd arm 106 Bridge 107 Body frame 108 Pivot shaft 109 Hole 110 Hole 111 Rear wheel 112 Non-movable part 113 Movable part 114 Oil 115 Shaft part 116 1st vane 117 Spline 118 peripheral wall 119 second vane 120 bush 121 plate 122 first support 123 bracket 124 124 second support 125 bracket 126 joint 127 first ball joint 128 second ball joint 129 ball part 130 shaft part 131 ball stud 132 socket 133 socket 134 Joint 135 Flange 136 Ball stud 137 Flange 138 Ball joint 139 Socket 140 Joint 141 Arm 142 Hole

Claims (8)

  1. 　ピボットシャフトを中心として回動するスイングアームと、該スイングアームの回動時に発生する衝撃を緩和するロータリーダンパとを備え、前記ロータリーダンパが、前記ピボットシャフトと同軸上に配置される非可動部と、前記スイングアームの回動に連動して前記非可動部の周りで回転する可動部と、該可動部と前記非可動部との間に充填されるオイルとを備える自動二輪車のリヤサスペンション。 A swing arm that pivots about a pivot shaft; and a rotary damper that alleviates an impact that occurs when the swing arm pivots, wherein the rotary damper is disposed on the same axis as the pivot shaft. A rear suspension for a motorcycle, comprising: a movable part that rotates around the non-movable part in conjunction with rotation of the swing arm; and oil that is filled between the movable part and the non-movable part.
  2. 　前記スイングアームと前記可動部を連結する連結手段を備え、該連結手段が、前記スイングアーム及び前記可動部のうちのいずれか一方に連結されるボールスタッドと、該ボールスタッドと球対偶で接触し、前記スイングアーム及び前記可動部のうちのいずれか他方に連結されるソケットとを含んで構成されるボールジョイントを備える請求項１に記載の自動二輪車のリヤサスペンション。 A connecting means for connecting the swing arm and the movable part, the connecting means contacting the ball stud connected to one of the swing arm and the movable part; The rear suspension for a motorcycle according to claim 1, further comprising a ball joint including a socket connected to one of the swing arm and the movable portion.
  3. 　前記スイングアームと前記可動部を連結する連結手段を備え、該連結手段が、前記スイングアームに連結される第１ボールジョイントと、前記可動部に連結される第２ボールジョイントとを含んで構成されるジョイントを備える請求項１に記載の自動二輪車のリヤサスペンション。 A connecting means for connecting the swing arm and the movable part is provided, and the connecting means includes a first ball joint connected to the swing arm and a second ball joint connected to the movable part. The motorcycle rear suspension according to claim 1, further comprising a joint.
  4. 　前記スイングアームが、車軸の片側のみを支持するアームを備える請求項１に記載の自動二輪車のリヤサスペンション。 The rear suspension of a motorcycle according to claim 1, wherein the swing arm includes an arm that supports only one side of an axle.
  5. 　前記スイングアームと前記可動部を連結する連結手段を備え、該連結手段が、前記スイングアーム及び前記可動部のうちのいずれか一方に連結されるボールスタッドと、該ボールスタッドと球対偶で接触し、前記スイングアーム及び前記可動部のうちのいずれか他方に連結されるソケットとを含んで構成されるボールジョイントを備える請求項４に記載の自動二輪車のリヤサスペンション。 A connecting means for connecting the swing arm and the movable part, the connecting means contacting the ball stud connected to one of the swing arm and the movable part; The rear suspension for a motorcycle according to claim 4, further comprising a ball joint including a socket connected to one of the swing arm and the movable portion.
  6. 　前記スイングアームと前記可動部を連結する連結手段を備え、該連結手段が、前記スイングアームに連結される第１ボールジョイントと、前記可動部に連結される第２ボールジョイントとを含んで構成されるジョイントを備える請求項４に記載の自動二輪車のリヤサスペンション。 A connecting means for connecting the swing arm and the movable part is provided, and the connecting means includes a first ball joint connected to the swing arm and a second ball joint connected to the movable part. The motorcycle rear suspension according to claim 4, further comprising a joint.
  7. 　前記スイングアームと前記可動部を連結する連結手段を備え、該連結手段が、前記スイングアーム及び前記可動部の両方に取り付けられる単一の部品を備える請求項１に記載の自動二輪車のリヤサスペンション。 The motorcycle rear suspension according to claim 1, further comprising a connecting means for connecting the swing arm and the movable part, wherein the connecting means comprises a single part attached to both the swing arm and the movable part.
  8. 　前記スイングアームをもとの位置に復帰させるコイルスプリングと、前記スイングアームに設けられ、前記コイルスプリングを支持する支持具とを備える請求項１に記載の自動二輪車のリヤサスペンション。 The rear suspension for a motorcycle according to claim 1, further comprising a coil spring for returning the swing arm to an original position, and a support provided on the swing arm and supporting the coil spring.
PCT/JP2014/065786 2014-06-13 2014-06-13 Rear suspension for motorcycle WO2015189999A1 (en)

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