JPS6382895A - Rear fork - Google Patents
Rear forkInfo
- Publication number
- JPS6382895A JPS6382895A JP22663986A JP22663986A JPS6382895A JP S6382895 A JPS6382895 A JP S6382895A JP 22663986 A JP22663986 A JP 22663986A JP 22663986 A JP22663986 A JP 22663986A JP S6382895 A JPS6382895 A JP S6382895A
- Authority
- JP
- Japan
- Prior art keywords
- fork
- inner edge
- view
- stabilizer
- plan
- 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.)
- Pending
Links
- 239000003381 stabilizer Substances 0.000 claims description 12
- 239000002131 composite material Substances 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 239000004918 carbon fiber reinforced polymer Substances 0.000 description 1
- 239000012141 concentrate Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 229910001234 light alloy Inorganic materials 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
- 239000000725 suspension Substances 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Landscapes
- Axle Suspensions And Sidecars For Cycles (AREA)
Abstract
(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Abstract] This bulletin contains application data before electronic filing, so abstract data is not recorded.
Description
【発明の詳細な説明】 （産業上の利用分野） 本発明は特に自動二輪車のリヤフォークに関する。[Detailed description of the invention] (Industrial application field) The present invention particularly relates to a rear fork of a motorcycle.
（従来の技術）
自動二輪車等の鞍乗型車両に一般に採用されるリヤフォ
ークは、前端で！１」体側に揺動自在にピボット軸支さ
れて後端間に後輪を回転自在に軸承しておす、この・リ
ヤフォークと車体側との間にはりャクッシ、ンユニット
が介設される。 ′モして１空゛め角形断面を
有して内側縁が平面視略Ｕ字形に形成されたフォーク部
を備えるリヤフォークが実用に供・される、
・（発明が解決゛□しようとする問題点）とこ
ろで、リヤフォークは左右間の捩れ剛性が低いと、コー
ナリング時や後輪へ駆動力が掛かった時等の場合、変形
が大きくなる。(Conventional technology) The rear fork, which is generally adopted in saddle-type vehicles such as motorcycles, has a front end! 1. A suspension unit is interposed between the rear fork and the vehicle body, which is pivotably supported on the body side and rotatably supports the rear wheel between the rear ends. In addition, a rear fork including a fork portion having a rectangular cross section and an inner edge formed into a substantially U-shape in plan view is provided for practical use.
- (Problem to be solved by the invention) However, if the torsional rigidity between the left and right sides of the rear fork is low, deformation will be large during cornering or when driving force is applied to the rear wheels.
そこで木゛発明の目的は、スタビライザを一体に備える
ことに□より左□右間の捩れ剛性を高めるようにし・た
りリヤフォークを提供するにある。Therefore, an object of the present invention is to provide a rear fork which has a stabilizer integrated therein, thereby increasing the torsional rigidity between the left and right sides.
（間□、！＆Ｉ鑞を解決子゛るための手段）以上の゛目
的を蓮成すべく本発明は、中空の角形。(Means for solving the gap □, ! & I) In order to achieve the above object, the present invention is directed to a hollow rectangular shape.
断面を有して内側縁（３）が平面視略Ｕ字形に形成され
たフォーク部（２）を備えるリヤフォーク（１）におい
て、上方または下方の少なくとも一方に突出するプ゛レ
ート上□のスタビライザ（１１）をフォークｍ （２）
の平面視略Ｕ字状をなす内側縁（３）に沿うて一体に結
合したことを特徴とする。In a rear fork (1) having a fork portion (2) having a cross section and an inner edge (3) formed in a substantially U-shape in plan view, a stabilizer on a plate that projects upwardly or downwardly at least one side. (11) Fork m (2)
It is characterized by being integrally joined along the inner edge (3) forming a substantially U-shape in plan view.
（作用）
フォーク部（２）の左右間に捩りモーメントが作用する
と、その平面視略Ｕ字形の内側縁（３）に応力が集中す
るが、この内側縁（３）部分には上方または下方の少な
くとも一方に突出するプレート状のスタビライザ（１１
）が一体に結合されており、このスタビライザ（１１）
に応力が分散されてフォーク部（２）の変形が抑えられ
るので、その補強効果により左右間の捩れ剛性が高まる
。(Function) When a torsional moment acts between the left and right sides of the fork part (2), stress concentrates on the inner edge (3) of the approximately U-shape in plan view, but this inner edge (3) part has an upper or lower A plate-shaped stabilizer (11
) are combined together, and this stabilizer (11)
Since the stress is dispersed and the deformation of the fork portion (2) is suppressed, the torsional rigidity between the left and right sides is increased due to its reinforcing effect.
（実施例） 以下に添付図面を基に実施例を説明する。(Example) Examples will be described below based on the accompanying drawings.
第１図はリヤフォークの外観を示し、リヤフォーク（１
）は中空の角形断面を有するアルミ軽合金等の金属また
はＣＦＲＰ等の硬質複合材料から成り、前端に横方向の
ピボットチューブ（６）を固着して備え、且つ後部は内
側縁（３）が平面視略Ｕ字形をなすフォーク部（２）に
形成される。このフォークｇＢ（２）の左右の後端には
エンドピース（７）、（７）が固着して備えられ、また
フォーク部（２）とピボットチューブ（６）間のりャフ
ォーク（１）前部には上下に貫通する角孔（４）が形成
されるとともに、その後部上には左右のクッショアーム
ブラケット（８）、（８）が起設される。Figure 1 shows the appearance of the rear fork.
) is made of a metal such as aluminum light alloy or a hard composite material such as CFRP with a hollow rectangular cross section, has a transverse pivot tube (6) fixed to the front end, and has a flat inner edge (3) at the rear. It is formed in a fork portion (2) that is approximately U-shaped when viewed. End pieces (7), (7) are fixed to the left and right rear ends of this fork gB (2), and the front part of the fork (1) between the fork part (2) and the pivot tube (6) is provided with end pieces (7), (7). A rectangular hole (4) is formed that penetrates vertically, and left and right cushion arm brackets (8) are erected on the rear part of the square hole (4).
斯かるリヤフォーク（１）は既知の如く前端のピボット
チューブ（６）部分でフレーム、エンジン等の車体側に
揺動自在にピボット軸支されるとともに、後端の左右の
エンドピース（７）、（７’）部間で後輪を回転自在に
軸承する。更に上端で車体側に取付けられたダンパを前
部の角孔（４）内に挿通し、このダンパの下端とクッシ
ョンアームブラケット（８）、（８）間をリンク及びク
ッションアームで枢着連結し、斯くしてリヤクッション
ユニットにリヤフォーク（１）を連結する。As is known, such a rear fork (1) is pivotably supported by a pivot tube (6) at the front end on the vehicle body side such as the frame, engine, etc., and has left and right end pieces (7) at the rear end, (7') The rear wheel is rotatably supported between the parts. Furthermore, the damper whose upper end is attached to the vehicle body is inserted into the square hole (4) in the front part, and the lower end of this damper and the cushion arm brackets (8) are pivotally connected by a link and a cushion arm. , thus connecting the rear fork (1) to the rear cushion unit.
以上において、実施例ではリヤフォーク（１）上方に突
出するプレート状のスタビライザ（１１）を、フォーク
部（２）の平面視略Ｕ字形をなす内側縁（３）に沿わせ
て結合する。第２図（ａ）は内側縁（３）の全面に結合
した場合を、また同図（ｂ）は内側縁（３）の上半面に
結合した場合を示す。ここで、結合は両者が金属の場合
は溶接により、また両者が硬質複合材料の場合は溶若若
しくは接着により行う。In the above embodiment, the plate-shaped stabilizer (11) projecting upward from the rear fork (1) is coupled along the inner edge (3) of the fork portion (2), which is approximately U-shaped in plan view. FIG. 2(a) shows a case in which it is bonded to the entire surface of the inner edge (3), and FIG. 2(b) shows a case in which it is bonded to the upper half surface of the inner edge (3). Here, the connection is performed by welding if both are metals, or by melting or adhesion if both are hard composite materials.
そしてスタビライザ（１１）はフォーク部（２）の左右
の後端から前方へ行くに従って徐々に立上がり、前部の
Ｕ字状連続部で最も高い形状をなし、後輪がチェーン駆
動の場合はその一側部にチェーンを通すための長孔（１
２）が形成されるが、シャフト駆動の場合は不要である
。The stabilizer (11) gradually rises from the left and right rear ends of the fork part (2) toward the front, forming the highest shape in the U-shaped continuous part at the front, and if the rear wheel is chain-driven, the stabilizer (11) gradually rises from the left and right rear ends of the fork part (2) toward the front. There is a long hole (1) on the side for passing the chain through.
2) is formed, but is not necessary in the case of shaft drive.
尚、スタビライザ（１１）はリヤフォーク（１）下方に
突出させても、または上下方向ともに突出させても良い
、更にリヤフェンダを備える自動二輪車に適用する場合
、スタビライザ（１１）にリヤフェンダを結合しても良
い、また鞍乗型の自動三輪車や自動四輪車のりャフォー
クにも、実施例構造を適用できること勿論である。The stabilizer (11) may protrude below the rear fork (1) or may protrude both in the vertical direction.Furthermore, when applied to a motorcycle equipped with a rear fender, the stabilizer (11) may be coupled to the rear fender. It goes without saying that the structure of the embodiment can also be applied to a straddle-type tricycle or four-wheeled vehicle.
（発明の効果）
以上のように本発明によれば、中空の角形断面を有する
フォーク部の平面視略Ｕ字形をなす内側縁に沿って一体
に結合したプレート状のスタビライザによって、フォー
ク部の左右間の捩れ剛性を高めて変形を抑えることがで
きる。(Effects of the Invention) As described above, according to the present invention, the plate-shaped stabilizer that is integrally connected along the inner edge of the fork portion having a hollow rectangular cross section and forming a substantially U-shape in plan view allows the left and right sides of the fork portion to be stabilized. It is possible to suppress deformation by increasing the torsional rigidity between the parts.
第１図は斜め前上方から見た本リヤフォークの外観図、
第２図（Ｑ）及び（ｂ）は結合部の態様を示す第１図Ｉ
ｊ−ＩＩ線に沿った各断面図である。
尚、図面中、（１）はりャフォーク、（２）はフォーク
部、（３）はその内側縁、（６）はピボットチューブ、
（７）はエンドピース、（１１）はスタビライザである
。Figure 1 is an external view of this rear fork viewed diagonally from the front and above.
Fig. 2 (Q) and (b) are Fig. 1 I showing the mode of the joint part.
It is each sectional view along the j-II line. In addition, in the drawing, (1) the beamer fork, (2) the fork part, (3) its inner edge, (6) the pivot tube,
(7) is an end piece, and (11) is a stabilizer.
Claims (1)
されたフォーク部の後端間に後輪を回転自在に軸承し、
且つ前端で車体側に揺動自在にピボット軸支されるリヤ
フォークにおいて、 前記フォーク部の平面視略Ｕ字形をなす内側縁に沿って
上方または下方の少なくとも一方に突出するプレート状
のスタビライザを一体に係合したこと、 を特徴とするリヤフォーク。[Scope of Claims] A rear wheel is rotatably supported between the rear ends of a fork part having a hollow rectangular cross section and an inner edge formed into a substantially U-shape in plan view,
In addition, in the rear fork whose front end is pivotably supported toward the vehicle body side, a plate-shaped stabilizer is integrally provided that projects upwardly or downwardly along the inner edge of the fork portion, which is approximately U-shaped in plan view. A rear fork characterized by engaging with.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP22663986A JPS6382895A (en) | 1986-09-25 | 1986-09-25 | Rear fork |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP22663986A JPS6382895A (en) | 1986-09-25 | 1986-09-25 | Rear fork |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6382895A true JPS6382895A (en) | 1988-04-13 |
Family
ID=16848332
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP22663986A Pending JPS6382895A (en) | 1986-09-25 | 1986-09-25 | Rear fork |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6382895A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2012076612A (en) * | 2010-10-01 | 2012-04-19 | Kawasaki Heavy Ind Ltd | Swing arm for motorcycle |
-
1986
- 1986-09-25 JP JP22663986A patent/JPS6382895A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2012076612A (en) * | 2010-10-01 | 2012-04-19 | Kawasaki Heavy Ind Ltd | Swing arm for motorcycle |
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