JPH0525995Y2 - - Google Patents
Info
- Publication number
- JPH0525995Y2 JPH0525995Y2 JP1984180887U JP18088784U JPH0525995Y2 JP H0525995 Y2 JPH0525995 Y2 JP H0525995Y2 JP 1984180887 U JP1984180887 U JP 1984180887U JP 18088784 U JP18088784 U JP 18088784U JP H0525995 Y2 JPH0525995 Y2 JP H0525995Y2
- Authority
- JP
- Japan
- Prior art keywords
- axle
- hole
- cam member
- large diameter
- diameter portion
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
- 238000005452 bending Methods 0.000 description 4
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 230000013011 mating Effects 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
Landscapes
- Axle Suspensions And Sidecars For Cycles (AREA)
Description
【考案の詳細な説明】
〔産業上の利用分野〕
この考案は自動二輪車の後輪支持装置に関する
ものであり、特に後輪をチエーンによつて駆動す
る形式の自動二輪車に好適な後輪支持装置に関す
る。[Detailed description of the invention] [Industrial application field] This invention relates to a rear wheel support device for a motorcycle, and is particularly suitable for a motorcycle whose rear wheel is driven by a chain. Regarding.
一般に後輪をチエーンで駆動する形式の自動二
輪車では、使用に伴うチエーンの伸びを補償する
ため、リヤアームに対して車軸を前後に移動可能
に構成してある（例えば実開昭54−71354号公
報）。
In general, motorcycles in which the rear wheel is driven by a chain are configured so that the axle can be moved back and forth with respect to the rear arm in order to compensate for the elongation of the chain due to use (for example, Japanese Utility Model Publication No. 71354/1983) ).
然しながら、このような構成のものでは、リヤ
アームに対して車軸の軸芯が倒れやすく、チエー
ンを緊張する作業の都度、前後車軸の平行度を確
認する必要があり、作業の能率が低下する。
However, with such a configuration, the axis of the axle tends to fall with respect to the rear arm, and it is necessary to check the parallelism of the front and rear axles each time the chain is tensioned, which reduces work efficiency.
この考案は上述のような不具合を回避し、効率
よく後輪駆動チエーンの緊張作業を行ない得る装
置を得ることを目的とするものであり、車体枠の
後部に、後輪を片持ちで支持するリヤアームを上
下揺動自在に枢支し、このリヤアームの後端に設
けた支持孔に、ボルトの締付けにより収縮可能な
スリツトを形成してこの孔の直径を多少変化させ
るようにし、前記支持孔に対し偏心した車軸孔を
有するカム部材をこの支持孔に締緩自在に嵌合
し、前記車軸孔に後車軸を挿通してなる自動二輪
車の後輪支持装置において、前記カム部材の前記
支持孔と嵌合する部分は、外径を大きくして大径
部とすると共に、リヤアーム後端の幅と等しく
し、前記大径部の外径より小さくした小径部をこ
の大径部の左右に突設し、この部分に後車軸支持
軸受を配置したものである。
The purpose of this invention is to avoid the above-mentioned problems and to obtain a device that can efficiently tension the rear wheel drive chain. A rear arm is pivotally supported to be able to swing up and down, and a slit is formed in a support hole provided at the rear end of the rear arm, which can be contracted by tightening a bolt, so that the diameter of this hole can be changed to some extent. On the other hand, in a rear wheel support device for a motorcycle, in which a cam member having an eccentric axle hole is fitted into the support hole in a manner that allows the rear axle to be inserted into the support hole, and the rear axle is inserted into the axle hole. The mating part has an outer diameter increased to form a large diameter part, and has a width equal to the rear end of the rear arm, and small diameter parts smaller than the outer diameter of the large diameter part are protruded on the left and right sides of this large diameter part. However, the rear axle support bearing is placed in this area.
以下、図示の実施例によつてこの考案を説明す
ると、図中１は自動二輪車であり、２はその車体
フレームである。車体フレーム２の前部に支持し
た前フオーク３には前輪４が左右転向自在に設け
られ、後部に支持したリヤアーム５の後端には後
輪６が支持されている。７は緩衝ばねであり、リ
ヤアーム５の後輪と車体フレーム２との間に張設
されている。８は自動二輪車のエンジンで変速機
を内蔵している。８ａはその出力軸であり、後輪
６に設けたスプロケツト９との間に巻回した駆動
チエーン１１によつて後輪６を駆動する。
This invention will be explained below with reference to the illustrated embodiment. In the figure, 1 is a motorcycle, and 2 is a body frame thereof. A front wheel 4 is provided on a front fork 3 supported at the front part of the vehicle body frame 2 so as to be able to freely turn left and right, and a rear wheel 6 is supported at the rear end of a rear arm 5 supported at the rear. A buffer spring 7 is stretched between the rear wheel of the rear arm 5 and the vehicle body frame 2. 8 is a motorcycle engine with a built-in transmission. The output shaft 8a drives the rear wheel 6 by a drive chain 11 wound between it and a sprocket 9 provided on the rear wheel 6.
リヤアーム５はアルミニウムの鋳造品であり、
前端がピボツト軸１２、ボルト１３および軸受１
４によつて車体フレーム２に設けたブラケツト２
ａへ揺動自在に軸支されている。リヤアーム５の
後端は第３図で示すように、外形が上下に膨大
し、そこに設けた大径の支持孔５ａには中空円筒
形のカム部材１５が嵌合されている。カム部材１
５は周方向の長孔１６とボルト形のピン１７によ
り回動のみ可能に、すなわち、軸方向は不動に支
持されている。カム部材１５の両端はリヤアーム
５より外方へ突出し、その突出部１５ａには外周
面の軸線C1に対してＥだけ偏心した軸線C2上に
車軸孔を形成する２個の球軸受１８，１８が嵌合
されており、両球軸受１８，１８には後輪６をフ
ランジで支持した筒形軸６ａと、同じくスプロケ
ツト９を支持した他の筒形軸９ａとが外周にスプ
ラインを形成した車軸１９により軸方向のみ不動
に支持されている。前記突出部１５ａは、このカ
ム部材１５における前記支持孔５ａに嵌合する大
径部よりは小径に形成されている。前記支持孔５
ａは内面にスリツト５ｂが形成されており、その
スリツト５ｂを押し縮めることができるように、
リヤアーム５の後端外方からボルト２１が挿通さ
れ螺合してある。なお、このスリツト５ｂはこの
ように後方へ向かつて開放されたものに限らず、
第４図で示すように、外端が閉じたものにすれ
ば、加工は複雑となるがリヤアーム５の剛性が増
し、弾力が大きくなるので、ボルト２１を開放し
たとき支持孔５ａが容易に原形に復帰する。前記
２個の球軸受１８，１８はリヤアーム５から外方
へ突出した位置に配置されているので、ボルト２
１を縮めたとき、その縮め付け力を直接受けるこ
とがなく変形がないか軽微である。２０は車軸１
９に螺合されナツトであり、前記筒形軸６ａと他
の筒形軸９ａとを結合する。２２は筒形軸６ａに
支持したブレーキデイスク、２３はそれを制止す
るブレーキキヤリバであり、いずれも公知のブレ
ーキ装置である。 The rear arm 5 is a cast aluminum product,
The front end is a pivot shaft 12, a bolt 13 and a bearing 1
Bracket 2 provided on the vehicle body frame 2 by 4
It is pivotably supported on a. As shown in FIG. 3, the outer shape of the rear end of the rear arm 5 expands vertically, and a hollow cylindrical cam member 15 is fitted into a large diameter support hole 5a provided therein. Cam member 1
5 is supported by an elongated hole 16 in the circumferential direction and a bolt-shaped pin 17 so that it can only rotate, that is, it cannot move in the axial direction. Both ends of the cam member 15 protrude outward from the rear arm 5, and the protruding portion 15a has two ball bearings 18 forming an axle hole on an axis C2 eccentric by E with respect to the axis C1 of the outer peripheral surface. 18 is fitted, and both ball bearings 18, 18 have a cylindrical shaft 6a that supports the rear wheel 6 with a flange, and another cylindrical shaft 9a that also supports the sprocket 9, forming a spline on the outer periphery. It is immovably supported only in the axial direction by an axle 19. The protruding portion 15a is formed to have a smaller diameter than the large diameter portion of the cam member 15 that fits into the support hole 5a. The support hole 5
A has a slit 5b formed on its inner surface, so that the slit 5b can be compressed.
A bolt 21 is inserted from the outside of the rear end of the rear arm 5 and is screwed together. Note that this slit 5b is not limited to the one opened toward the rear like this.
As shown in FIG. 4, if the outer end is closed, the machining will be complicated, but the rigidity and elasticity of the rear arm 5 will be increased, so that when the bolt 21 is released, the support hole 5a can be easily shaped into its original shape. to return to. Since the two ball bearings 18, 18 are arranged at positions protruding outward from the rear arm 5, the bolt 2
When 1 is compressed, it is not directly subjected to the compressing force, so there is no or only slight deformation. 20 is axle 1
9 is a nut, which connects the cylindrical shaft 6a and another cylindrical shaft 9a. 22 is a brake disk supported on the cylindrical shaft 6a, and 23 is a brake caliber for stopping the disk, both of which are known brake devices.
この実施例によれば、駆動チエーン１１の張り
過ぎや緩み過ぎを調節するには、ボルト２１を緩
めた後、第２図で示すように、他の筒形軸９ａに
設けた孔９ｂや、スプロケツト９に設けた孔９ｃ
へドライバなどの鉄棒Ｂを突つ込み、カム部材１
５の側面に設けた横長の窪み１５ｂに係合させて
スプロケツト９とカム部材１５とを相対的に回動
させることによつて、カム部材１５が支持孔内を
回動し、それに偏心して支持した軸受１８，１８
が車軸１９を伴つて前後方向に移動して駆動チエ
ーン１１の緩み具合を調節できる。調節が済んだ
後はボルト２１を緩めてカム部材１５を固定すれ
ば、以後、カム部材１５はリヤアーム５に対して
回動不能となり、その調節が狂うことがない。な
お、この調節において、車軸１９は車輪６をリヤ
アーム５に固定する作用を有していないので、何
等弛める必要がない。 According to this embodiment, in order to adjust whether the drive chain 11 is too tight or too loose, after loosening the bolt 21, as shown in FIG. Hole 9c provided in sprocket 9
Insert the iron rod B such as a screwdriver into the cam member 1.
By engaging the horizontally long recess 15b provided on the side surface of the sprocket 9 and rotating the cam member 15 relative to each other, the cam member 15 rotates within the support hole and is eccentrically supported. Bearings 18, 18
can be moved in the front and back direction along with the axle 19 to adjust the degree of slack in the drive chain 11. After the adjustment is completed, if the bolt 21 is loosened and the cam member 15 is fixed, the cam member 15 will no longer be able to rotate relative to the rear arm 5, and the adjustment will not go out of order. In this adjustment, since the axle 19 does not have the function of fixing the wheel 6 to the rear arm 5, there is no need to loosen it in any way.
この考案は以上のように、車体枠の後部に、後
輪を片持ちで支持するリヤアームを上下揺動自在
に枢支し、このリヤアームの後端に設けた支持孔
に、ボルトの締付けにより収縮可能なスリツトを
形成してこの孔の直径を多少変化させるように
し、前記支持孔に対し偏心した車軸孔を有するカ
ム部材をこの支持孔に締緩自在に嵌合し、前記車
軸孔に後車軸を挿通してなる自動二輪車の後輪支
持装置において、前記カム部材の前記支持孔と嵌
合する部分は、外径を大きくして大径部とすると
共に、リヤアーム後端の幅と等しくし、前記大径
部の外径より小さくした小径部をこの大径部の左
右に突設し、この部分に後車軸支持軸受を配置し
たものであるから、カム部材を回動させるのみ
で、前端のピボツト軸１２から車軸１９までの寸
法が長短に変化するから、車軸を緩めることな
く、駆動チエーン１１の張り具合を調節できる。
なお、実施例で示すように、リヤアームを片持ち
式とすれば、車体の一側においてカム部材を回動
させることにより、駆動チエーン１１の緩み具合
を調節でき、車体の両側に調節機構を有する従来
のものに較べて、調節作業を容易に行ない得る。
As described above, this idea consists of a rear arm that supports the rear wheel cantilevered at the rear of the vehicle body frame, which can be pivoted up and down, and a support hole provided at the rear end of the rear arm that is retracted by tightening a bolt. A cam member having an axle hole eccentric to the support hole is fitted into the support hole so as to be tightenable and loose, and a rear axle is inserted into the axle hole. In the rear wheel support device for a motorcycle, a portion of the cam member that fits into the support hole has an increased outer diameter to form a large diameter portion and is equal to the width of the rear end of the rear arm; Small diameter parts smaller than the outside diameter of the large diameter part are provided on the left and right sides of the large diameter part, and the rear axle support bearings are arranged in these parts, so that the front end can be moved by simply rotating the cam member. Since the dimension from the pivot shaft 12 to the axle 19 changes in length, the tension of the drive chain 11 can be adjusted without loosening the axle.
As shown in the embodiment, if the rear arm is of a cantilever type, the degree of loosening of the drive chain 11 can be adjusted by rotating a cam member on one side of the vehicle body, and adjustment mechanisms are provided on both sides of the vehicle body. Adjustment work can be performed more easily than with conventional ones.
また、カム部材は、片持ち式リヤアームの後端
の支持孔に嵌合する部分は外径を大きくして大径
部とし、かつこの大径部の外径より小さくした小
径部をこの大径部の左右に凸設し、この部分に後
車軸支持軸受を配置した構成であるため、この支
持軸受において、後輪側の支持軸受には後輪が路
面から受ける荷重がかかり、スプロケツト側の支
持軸受にはチエーンの張力による荷重がかかる。 In addition, the cam member has a large diameter portion by enlarging the outer diameter of the portion that fits into the support hole at the rear end of the cantilevered rear arm, and a small diameter portion smaller than the outer diameter of the large diameter portion. The structure is such that the rear axle support bearing is placed on the left and right sides of the sprocket, and the load that the rear wheel receives from the road is applied to the support bearing on the rear wheel side, and the support bearing on the sprocket side is The bearing is loaded by the tension of the chain.
カム部材は、その中央に位置する大径部により
リヤアームに支持されているので、支持軸受の荷
重による曲げモーメントが大径部に加わる。な
お、梁の一端を支持し他端に荷重をかけた場合に
は、梁の支持部には荷重による最も大きな曲げモ
ーメントが加わる。梁の設計においては曲げモー
メントの大きい断面の断面二次モーメントを大き
くして、発生する応力が一様になるような形態と
するのが合理的である。 Since the cam member is supported by the rear arm by the large diameter portion located at the center, a bending moment due to the load of the support bearing is applied to the large diameter portion. Note that when one end of a beam is supported and a load is applied to the other end, the largest bending moment due to the load is applied to the support portion of the beam. When designing a beam, it is reasonable to increase the moment of inertia of the section where the bending moment is large so that the generated stress is uniform.
本考案に使用するカム部材も一種の梁であり、
支持軸受の荷重により最も大きな曲げモーメント
が大径部に加わる。そのため、大径部の外径を荷
重のかかる小径部より大きくして梁の断面の断面
二次モーメントを大きくすることで、カム部材が
荷重に対する合理的な梁の形態となる。すなわ
ち、カム部材を、その重量を軽くして、かつコン
パクトに形成することができる。 The cam member used in this invention is also a type of beam,
The largest bending moment is applied to the large diameter section due to the load of the support bearing. Therefore, by increasing the moment of inertia of the cross section of the beam by making the outer diameter of the large diameter portion larger than the small diameter portion on which the load is applied, the cam member becomes a beam that can handle the load rationally. That is, the cam member can be made lighter and more compact.
さらに、大径部の外径のみ大きくすれば、ボル
ト締付けによりカム部材と支持孔との嵌合面に生
じる摩擦力によるトルクは大きくなるので、大径
部の幅を狭くしても、カム部材がチエーンの張力
により回動するのを十分防ぐことができる。 Furthermore, if only the outer diameter of the large diameter portion is increased, the torque due to the frictional force generated on the fitting surface between the cam member and the support hole due to bolt tightening will increase, so even if the width of the large diameter portion is narrowed, the cam member can be sufficiently prevented from rotating due to the tension of the chain.
このようにした場合、リヤアームの後端の幅も
同時に狭くなり、リヤアーム後端の左右の空間が
大きくなるのでスプロケツトやブレーキデイスク
を配置するのが容易となる。 In this case, the width of the rear end of the rear arm is also narrowed, and the space on both sides of the rear end of the rear arm is increased, making it easier to arrange the sprocket and brake disc.
加えて、カム部材は大径部と小径部とに分かれ
ているから、リヤアームの支持孔に嵌合する大径
部のみ外径を加工すればよい。 In addition, since the cam member is divided into a large diameter portion and a small diameter portion, it is only necessary to process the outer diameter of the large diameter portion that fits into the support hole of the rear arm.
すなわち、カム部材および支持孔の全長にわた
つて加工する必要がないので、加工時間が短縮さ
れると共に、寸法精度を出しやすくなる。特に、
大径部の外径を大きくして幅を短くしたときに
は、この効果が大きくなりコストを下げることが
できる。 That is, since it is not necessary to process the entire length of the cam member and the support hole, processing time is shortened and dimensional accuracy can be easily achieved. especially,
When the outer diameter of the large diameter portion is increased to shorten the width, this effect becomes greater and costs can be reduced.
図面はこの考案の一実施例を示すもので、第１
図は自動二輪車の側面図、第２図はその−断
面図、第３図はその−線断面を拡大して示す
拡大側面図、第４図はその変形例を示す第３図相
当の拡大断面図である。
５……リヤアーム、５ａ……支持孔、５ｂ……
スリツト、９……スプロケツト、１５……カム部
材。
The drawing shows one embodiment of this invention.
The figure is a side view of the motorcycle, Figure 2 is a cross-sectional view thereof, Figure 3 is an enlarged side view showing the cross-section taken along the line -, and Figure 4 is an enlarged cross-section equivalent to Figure 3 showing a modification thereof. It is a diagram. 5... Rear arm, 5a... Support hole, 5b...
Slit, 9... Sprocket, 15... Cam member.
Claims (1)
アームを上下揺動自在に枢支し、このリヤアーム
の後端に設けた支持孔に、ボルトの締付けにより
収縮可能なスリツトを形成してこの孔の直径を多
少変化させるようにし、前記支持孔に対し偏心し
た車軸孔を有するカム部材をこの支持孔に締緩自
在に嵌合し、前記車軸孔に後車軸を挿通してなる
自動二輪車の後輪支持装置において、前記カム部
材の前記支持孔と嵌合する部分は、外径を大きく
して大径部とすると共に、リヤアーム後端の幅と
等しくし、前記大径部の外径より小さくした小径
部をこの大径部の左右に突設し、この部分に後車
軸支持軸受を配置したことを特徴とする自動二輪
車の後輪支持装置。 At the rear of the vehicle body frame, a rear arm that supports the rear wheel in a cantilevered manner is pivoted so as to be able to swing up and down, and a slit is formed in the support hole at the rear end of the rear arm that can be retracted by tightening a bolt. A motorcycle in which a cam member having an axle hole eccentric to the support hole is fitted into the support hole so as to be tightenable and loose, and a rear axle is inserted through the axle hole, the diameter of the hole being slightly changed. In the rear wheel support device, the portion of the cam member that fits into the support hole has an outer diameter increased to form a large diameter portion, is equal to the width of the rear end of the rear arm, and is wider than the outer diameter of the large diameter portion. 1. A rear wheel support device for a motorcycle, characterized in that a small diameter portion is provided protruding from the left and right sides of the large diameter portion, and a rear axle support bearing is disposed in this portion.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1984180887U JPH0525995Y2 (en) | 1984-11-30 | 1984-11-30 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1984180887U JPH0525995Y2 (en) | 1984-11-30 | 1984-11-30 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6195688U JPS6195688U (en) | 1986-06-19 |
| JPH0525995Y2 true JPH0525995Y2 (en) | 1993-06-30 |
Family
ID=30738446
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1984180887U Expired - Lifetime JPH0525995Y2 (en) | 1984-11-30 | 1984-11-30 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0525995Y2 (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH065995Y2 (en) * | 1986-09-17 | 1994-02-16 | 本田技研工業株式会社 | Rear wheel support device |
| JPH065996Y2 (en) * | 1986-10-15 | 1994-02-16 | 本田技研工業株式会社 | Cantilever swing arm |
| JP2722063B2 (en) * | 1987-02-06 | 1998-03-04 | 本田技研工業 株式会社 | Motorcycle cantilever swing arm |
| JP6476224B2 (en) * | 2017-03-23 | 2019-02-27 | 本田技研工業株式会社 | Rear fender support structure for saddle-ride type vehicles |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5353237U (en) * | 1976-10-08 | 1978-05-08 |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS58181689U (en) * | 1982-05-31 | 1983-12-03 | 本田技研工業株式会社 | Tricycle drive chain adjustment mechanism |
-
1984
- 1984-11-30 JP JP1984180887U patent/JPH0525995Y2/ja not_active Expired - Lifetime
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5353237U (en) * | 1976-10-08 | 1978-05-08 |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6195688U (en) | 1986-06-19 |
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