JPH01226484A - Frame member for motorcycle - Google Patents
Frame member for motorcycleInfo
- Publication number
- JPH01226484A JPH01226484A JP63052710A JP5271088A JPH01226484A JP H01226484 A JPH01226484 A JP H01226484A JP 63052710 A JP63052710 A JP 63052710A JP 5271088 A JP5271088 A JP 5271088A JP H01226484 A JPH01226484 A JP H01226484A
- Authority
- JP
- Japan
- Prior art keywords
- ribs
- deformation
- pipe
- projecting
- curved face
- 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
- 239000000463 material Substances 0.000 claims description 17
- 238000005452 bending Methods 0.000 abstract description 7
- 229910001234 light alloy Inorganic materials 0.000 abstract description 5
- 230000015556 catabolic process Effects 0.000 abstract 1
- 238000006731 degradation reaction Methods 0.000 abstract 1
- 239000002184 metal Substances 0.000 description 4
- 229910000831 Steel Inorganic materials 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 239000010959 steel Substances 0.000 description 3
- 241000257465 Echinoidea Species 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Landscapes
- Motorcycle And Bicycle Frame (AREA)
Abstract
Description
【発明の詳細な説明】 〔産業上の利用分野〕 この発明は、オートバイのフレーム材に関する。[Detailed description of the invention] [Industrial application field] The present invention relates to a frame material for a motorcycle.
(従来の技術とその問題点)
一般に、オートバイのフレームは、使用場所に適する剛
性を有する鋼管を選定し、これを適宜切所曲げ加工し、
溶着して結合して作っている。ところが、スポーツタイ
プのオートバイでは、車両@鏝の軽減による重両性能の
向上が求められており、鋼管の代りに軽合金をパイプ状
に引抜いたパイプ材を用いて、軽量化を図っている。軽
合金の場合、材料自体は鋼材に較べて剛性が不足するの
で、パイプ材の肉厚さを厚くしたり、内側にリブを設け
て強化している。第5図は、断面長四角形のパイプ材A
の場合を示し、この場合、曲げ加工すると二点鎖線で示
すように変形ができ、剛性不足が生じるだけでなく、目
立って体裁が悪い。第6図は、縦長長四角形のパイプ1
4Aの間に、横に一体にリブBを設けた場合であるが、
この場合も曲げ加工すると、二点鎖線で示すように変形
ができる。これを防ぐため、第7図に示すように、長四
角形のパイプ材への内側に入れたりブBに合せて、外側
に溝Cを設け、溝Cで曲げた場合の変形を吸収して、変
形を少なくしようとしたものがある。例えば実開昭61
−98690号公報参照。(Prior art and its problems) Generally, a motorcycle frame is made by selecting a steel pipe with a rigidity suitable for the place of use, bending it at appropriate places, and
It is made by welding and joining. However, in sports-type motorcycles, there is a need to improve heavy-duty performance by reducing the weight of the vehicle, so instead of steel pipes, light alloy pipes are used to reduce weight. In the case of light alloy, the material itself lacks rigidity compared to steel, so the pipe material is made thicker or ribs are provided on the inside to strengthen it. Figure 5 shows pipe material A with a rectangular cross section.
In this case, the bending process results in deformation as shown by the two-dot chain line, which not only results in insufficient rigidity, but also makes it noticeably unsightly. Figure 6 shows a vertically long rectangular pipe 1.
In the case where rib B is provided horizontally and integrally between 4A,
In this case as well, when the material is bent, it can be deformed as shown by the two-dot chain line. In order to prevent this, as shown in Fig. 7, a groove C is provided on the outside of the rectangular pipe material to fit inside the pipe B, and the groove C absorbs the deformation when bent. There are some attempts to reduce deformation. For example, Jitsukai 61
See Publication No.-98690.
しかし、この場合は、見た目はよくなるが、溝C部分に
応力が集中し弱くなり、使用していると溝Cに埃がつま
って見苦しくなる不都合がある。However, in this case, although the appearance is improved, stress is concentrated in the groove C, making it weaker, and the groove C gets clogged with dust during use, making it unsightly.
(発明の目的)
この発明は、断面縦長の長四角形で、内側に横にリブを
設けたパイプ材で、曲げ加工した場合に、剛性の低下が
少なく、変形が目立たないオートバイのフレーム材を得
ることを目的とする。(Objective of the Invention) The present invention provides a motorcycle frame material that has a vertically elongated rectangular cross section and has horizontal ribs on the inside, and that exhibits less decrease in rigidity and less noticeable deformation when bent. The purpose is to
(発明の構成)
以下、本発明を第1図乃至第4図に示す実施例によって
説明する。(Structure of the Invention) The present invention will be described below with reference to embodiments shown in FIGS. 1 to 4.
第1図乃至第3図は、本発明の一実施例を示すものであ
る。1 to 3 show one embodiment of the present invention.
フレーム前端のヘッドパイプ1と、フレーム中央の左右
の中央金具2の間を、パイプ材でできた上バイブ3で溶
着結合し、更に左右の中央金具2に、細いパイプ材の後
パイプ4を溶着結合してフレームに形成する。尚、ヘッ
ドパイプには、前ホーク5を装着し、左右の中央金具2
には、後ホークロの前端を軸着し、左右の上ペイプ3と
、左右の中央金具2の前側には、エンジン7を搭゛載す
る。The head pipe 1 at the front end of the frame and the left and right central metal fittings 2 in the center of the frame are welded together using an upper vibe 3 made of pipe material, and the rear pipe 4 of thin pipe material is further welded to the left and right central metal fittings 2. Combine to form a frame. In addition, the front fork 5 is attached to the head pipe, and the left and right center metal fittings 2 are attached.
The front end of the rear hook is pivoted to the front end, and an engine 7 is mounted on the front side of the left and right upper pipes 3 and the left and right center metal fittings 2.
しかして、左右の上パイプ3にするパイプ材は、第3図
に示すJ:うに、軽合金でill長の長四角形断面で、
内側に横にリブ8を設けてパイプ状に引抜いたもので、
一方の側の上辺及び)辺9とリブ8の間を凸円弧10の
曲面に形成し、二つのりブ8の間を凹円弧11の曲面に
形成する。Therefore, the pipe material for the left and right upper pipes 3 is made of J: sea urchin, a light alloy, and has a rectangular cross section with ill length, as shown in Fig. 3.
It has horizontal ribs 8 on the inside and is pulled out into a pipe shape.
A curved surface of a convex arc 10 is formed between the upper edge of one side and the edge 9 and the rib 8, and a curved surface of a concave arc 11 is formed between the two ribs 8.
第4図は、本発明の他の実施例を示すものである。この
場合は、左右の上パイプ3にするパイプ材は、軽合金で
縦長の長四角形断面で、内側に横に設けたりブ8を一個
としたもので、一方の側の上辺及び下辺9とリブ8の間
を凸円弧10の曲面に形成する。その他は、第1図乃至
第3図に示したものと同じである。FIG. 4 shows another embodiment of the invention. In this case, the pipe material for the left and right upper pipes 3 is made of light alloy and has a vertically elongated rectangular cross section, with a rib 8 installed horizontally on the inside, and ribs on the upper and lower sides 9 of one side. 8 is formed into a curved surface of a convex arc 10. The other parts are the same as those shown in FIGS. 1 to 3.
(発明の作用)
左右の上パイプ3は、前端を中央に寄せてヘッドパイプ
1に溶着し、中央部にエンジン7が入るように11広に
し、後端を左右の中央金具2に溶着するので、曲げ加工
が必要である。一方の側の凸円弧10及び凹円弧11の
曲面で形成した部分が、外側になるようにして、曲げ加
工する。曲げ加工した部分には、変形ができるが、凸円
弧10及び凹円弧11の曲面にした部分の曲率が変化す
るが、当初から曲面にしであるので、変形が目立たない
し、曲げ加工によって応力が集中する個所もさけること
ができるので剛性低下も少な(できる。(Operation of the invention) The left and right upper pipes 3 are welded to the head pipe 1 with their front ends centered, made 11 wide so that the engine 7 can fit in the center, and their rear ends welded to the left and right center fittings 2. , bending is required. The bending process is performed so that the portion formed by the curved surfaces of the convex arc 10 and the concave arc 11 on one side is on the outside. The bent part can be deformed, and the curvature of the curved surface of the convex arc 10 and concave arc 11 changes, but since the curved surface has been formed from the beginning, the deformation is not noticeable, and stress is concentrated due to the bending process. Since it is possible to avoid the parts where the parts are bent, there is less decrease in rigidity.
以上説明したように、この発明は、断面が縦長の長四角
形で、内側に横に一個所又は二個所リプを一体に設けた
パイプで、一方の側面を上下辺とリブの間、或いは二つ
のリブの間を凸円弧又は凹円弧の曲面に形成し、これを
オートバイのフレーム材としたので、曲げ加工した場合
に、曲率が変化して変形し、変形を目立たないようにで
きる。As explained above, the present invention is a pipe having a vertically elongated rectangular cross section and integrally provided with one or two ribs on the inside. Since the space between the ribs is formed into a convex or concave curved surface and used as a frame material for a motorcycle, the curvature changes and deforms when it is bent, making the deformation less noticeable.
そして、曲げ加工によって応力が集中する個所もさける
ことができて、剛性低下も少なく、丈夫にできる。In addition, it is possible to avoid areas where stress is concentrated during bending, resulting in less reduction in rigidity and increased durability.
第1図乃至第3図は本発明の一実施例を示し、第1図は
本発明のフレーム材を用いたオートバイフレームの側面
図、第2図は同平面図、第3図は第1図x−x矢視拡大
断面図、第4図は本発明の他の実施例を示すフレーム材
の断面図、第5図乃至第7図は各々従来の例を示すフレ
ーム材の断面図である。
3・・・パイプ、8・・・リブ、9・・・上辺および下
辺、10・・・凸円弧、11・・・凹円弧。1 to 3 show one embodiment of the present invention, FIG. 1 is a side view of a motorcycle frame using the frame material of the present invention, FIG. 2 is a plan view of the same, and FIG. 4 is a sectional view of a frame material showing another embodiment of the present invention, and FIGS. 5 to 7 are sectional views of a frame material showing conventional examples. 3... Pipe, 8... Rib, 9... Upper side and lower side, 10... Convex circular arc, 11... Concave circular arc.
Claims (1)
リブを一体に設けたパイプで、一方の側面を上下辺とリ
ブの間、或いは二つのリブの間を凸円弧又は凹円弧の曲
面に形成し、これをオートバイのフレーム材としたこと
を特徴とするオートバイのフレーム材。A pipe with a vertically elongated rectangular cross section and one or two horizontal ribs on the inside, with one side between the top and bottom sides and the ribs, or between the two ribs with a convex or concave arc. A motorcycle frame material formed into a curved surface and used as a motorcycle frame material.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP63052710A JPH01226484A (en) | 1988-03-08 | 1988-03-08 | Frame member for motorcycle |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP63052710A JPH01226484A (en) | 1988-03-08 | 1988-03-08 | Frame member for motorcycle |
Publications (1)
Publication Number | Publication Date |
---|---|
JPH01226484A true JPH01226484A (en) | 1989-09-11 |
Family
ID=12922452
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP63052710A Pending JPH01226484A (en) | 1988-03-08 | 1988-03-08 | Frame member for motorcycle |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPH01226484A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1138588A3 (en) * | 2000-03-31 | 2004-08-11 | Honda Giken Kogyo Kabushiki Kaisha | A motorcycle frame |
Citations (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS58145584A (en) * | 1982-02-25 | 1983-08-30 | スズキ株式会社 | Frame of motorcycle |
JPS5950938A (en) * | 1982-09-14 | 1984-03-24 | Teruaki Yoshida | Manufacture of car body frame for automobile |
JPS6124681A (en) * | 1984-07-13 | 1986-02-03 | ヤマハ発動機株式会社 | Frame for car of motorcycle, etc. |
JPS6122074Y2 (en) * | 1984-12-04 | 1986-07-02 | ||
JPS61202992A (en) * | 1985-03-06 | 1986-09-08 | 本田技研工業株式会社 | Car body frame of motorcycle |
JPS61282185A (en) * | 1985-06-05 | 1986-12-12 | ヤマハ発動機株式会社 | Car body frame for motorcycle |
JPS61282183A (en) * | 1985-06-05 | 1986-12-12 | ヤマハ発動機株式会社 | Car body frame for motorcycle |
JPS61282184A (en) * | 1985-06-05 | 1986-12-12 | ヤマハ発動機株式会社 | Car body frame for motorcycle |
JPS61285183A (en) * | 1985-06-10 | 1986-12-15 | ヤマハ発動機株式会社 | Car body frame for motorcycle |
-
1988
- 1988-03-08 JP JP63052710A patent/JPH01226484A/en active Pending
Patent Citations (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS58145584A (en) * | 1982-02-25 | 1983-08-30 | スズキ株式会社 | Frame of motorcycle |
JPS5950938A (en) * | 1982-09-14 | 1984-03-24 | Teruaki Yoshida | Manufacture of car body frame for automobile |
JPS6124681A (en) * | 1984-07-13 | 1986-02-03 | ヤマハ発動機株式会社 | Frame for car of motorcycle, etc. |
JPS6122074Y2 (en) * | 1984-12-04 | 1986-07-02 | ||
JPS61202992A (en) * | 1985-03-06 | 1986-09-08 | 本田技研工業株式会社 | Car body frame of motorcycle |
JPS61282185A (en) * | 1985-06-05 | 1986-12-12 | ヤマハ発動機株式会社 | Car body frame for motorcycle |
JPS61282183A (en) * | 1985-06-05 | 1986-12-12 | ヤマハ発動機株式会社 | Car body frame for motorcycle |
JPS61282184A (en) * | 1985-06-05 | 1986-12-12 | ヤマハ発動機株式会社 | Car body frame for motorcycle |
JPS61285183A (en) * | 1985-06-10 | 1986-12-15 | ヤマハ発動機株式会社 | Car body frame for motorcycle |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1138588A3 (en) * | 2000-03-31 | 2004-08-11 | Honda Giken Kogyo Kabushiki Kaisha | A motorcycle frame |
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