JPH04349086A - Body frame structure of motorcycle - Google Patents
Body frame structure of motorcycleInfo
- Publication number
- JPH04349086A JPH04349086A JP3185830A JP18583091A JPH04349086A JP H04349086 A JPH04349086 A JP H04349086A JP 3185830 A JP3185830 A JP 3185830A JP 18583091 A JP18583091 A JP 18583091A JP H04349086 A JPH04349086 A JP H04349086A
- Authority
- JP
- Japan
- Prior art keywords
- body frame
- frame
- motorcycle
- head pipe
- upper frame
- 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.)
- Granted
Links
- 239000006096 absorbing agent Substances 0.000 claims description 5
- 230000035939 shock Effects 0.000 claims description 5
- 239000002828 fuel tank Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
Landscapes
- Automatic Cycles, And Cycles In General (AREA)
- Axle Suspensions And Sidecars For Cycles (AREA)
Abstract
Description
【０００１】0001
【産業上の利用分野】本発明は、自動二輪車における車
体フレ―ムの構造に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to the structure of a body frame for a motorcycle.
【０００２】0002
【従来の技術】従来、前後輪間に配設されたエンジンを
車体フレ―ムで支持し、該車体フレ―ムをヘッドパイプ
から後方へ延出させ、該後部に後輪を支持するリヤア―
ムを枢着し、該リヤア―ムと前記車体フレ―ムの間に緩
衝器を介設させた自動二輪車がある。2. Description of the Related Art Conventionally, an engine disposed between front and rear wheels is supported by a body frame, and the body frame is extended rearward from a head pipe, and a rear arm supporting the rear wheels is provided at the rear of the body frame.
There is a motorcycle in which a rear arm is pivotally mounted and a shock absorber is interposed between the rear arm and the vehicle body frame.
【０００３】0003
【発明が解決しようとする課題】ところが、上記の車体
フレ―ムは、ヘッドパイプから後方へ左右一対のフレ―
ムが略水平に延出され、その中間部から後部にかけて下
方に湾曲されて構成されていたため、フレ―ムの全長が
長くなりその分重量を増す、という問題があった。[Problems to be Solved by the Invention] However, the above-described vehicle body frame has a pair of left and right frames extending from the head pipe to the rear.
Since the frame extends approximately horizontally and is curved downward from the middle part to the rear part, there is a problem in that the overall length of the frame becomes longer and the weight increases accordingly.
【０００４】また、左右一対のフレ―ムからなるので、
前後輪からのよじれや衝撃力に対してある程度の強度を
確保しようとするとオフロ―ドのような場合にはその重
量が増加する、という問題もあった。[0004] Also, since it consists of a pair of left and right frames,
There was also the problem that if you tried to ensure a certain level of strength against twisting and impact forces from the front and rear wheels, the weight would increase in off-road situations.
【０００５】本発明は、従来の技術の有するこのような
問題点に鑑みてなされたものであり、その目的とすると
ころは、フレ―ムを略直線状とし、３本のフレ―ムを使
用することによって、軽量でオフロ―ドにも耐え得る自
動二輪車の車体フレ―ム構造を提供しようとするもので
ある。The present invention has been made in view of the above-mentioned problems of the conventional technology, and its purpose is to make the frame substantially straight and to use three frames. By doing so, we aim to provide a motorcycle body frame structure that is lightweight and can withstand off-road use.
【０００６】[0006]
【課題を解決するための手段】上記目的を達成するため
に、本発明における自動二輪車の車体フレ―ム構造は、
車体フレ―ムをヘッドパイプ上部から後方へ延びる１本
の短いアッパフレ―ムとヘッドパイプ下部から略直線状
に後方へ延びる左右一対の長いロアフレ―ムとで構成し
、前記アッパフレ―ムの後部と前記左右のロアフレ―ム
を連結すると共に該アッパフレ―ムの後端部に緩衝器の
上端を接続したことを特徴とする、ものである。[Means for Solving the Problems] In order to achieve the above object, the body frame structure of a motorcycle according to the present invention has the following features:
The vehicle body frame is composed of a short upper frame extending rearward from the upper part of the head pipe, and a pair of left and right long lower frames extending rearward in a substantially straight line from the lower part of the head pipe. The left and right lower frames are connected to each other, and the upper end of the shock absorber is connected to the rear end of the upper frame.
【０００７】[0007]
【作用】上記のように構成された車体フレ―ムであるの
で、フレ―ムが略直線状に後方へ延びているため、その
フレ―ム全長が短くなる。また、フレ―ムは１本の短い
アッパフレ―ムと左右一対の長いロアフレ―ムとで構成
されているため、その強度は抜群であると共にアッパフ
レ―ムとしては短いものを使用するので３本にしたこと
による重量の増加は僅かである。従って全体的に軽量な
フレ―ム構成となる。[Operation] Since the vehicle body frame is constructed as described above, the frame extends rearward in a substantially straight line, so that the overall length of the frame is shortened. In addition, since the frame is composed of one short upper frame and a pair of long lower frames on the left and right, its strength is outstanding, and since a short upper frame is used, there are three The weight increase due to this is slight. Therefore, the overall frame structure is lightweight.
【０００８】[0008]
【実施例】添付図面を参照して本発明の実施例について
説明する。図１はオフロ―ド走行競技用の自動二輪車を
示し、図中Ａは車体フレ―ム、ａはエンジン、１は気化
器、２は燃料タンク、３はシ―ト、４は操向ハンドル、
５はフロントフォ―ク、６は前輪である。DESCRIPTION OF THE PREFERRED EMBODIMENTS Examples of the present invention will be described with reference to the accompanying drawings. Figure 1 shows a motorcycle for off-road driving competitions, where A is the body frame, a is the engine, 1 is the carburetor, 2 is the fuel tank, 3 is the seat, 4 is the steering handle,
5 is the front fork, and 6 is the front wheel.
【０００９】車体フレ―ムＡはパイプ材で構成され、ヘ
ッドパイプ７、アッパフレ―ム８、２本のロアフレ―ム
９、シ―トレ―ル１０、シ―トピラ―チュ―ブ１１を備
えている。The vehicle body frame A is made of pipe material and includes a head pipe 7, an upper frame 8, two lower frames 9, a seat rail 10, and a seat pillar tube 11. There is.
【００１０】前記アッパフレ―ム８は、ヘッドパイプ７
の上部から後方へ下向きに傾斜して略直線状に短く延び
ていて、その後部は左右のロアフレ―ム９に連結されて
いる。The upper frame 8 has a head pipe 7
It extends rearward from the upper part of the frame in a substantially straight line and slopes downward, and its rear part is connected to the left and right lower frames 9.
【００１１】前記ロアフレ―ム９は、アッパフレ―ム８
と略平行にヘッドパイプ７の下部から後方へ下向きに傾
斜して略直線状に長く延び、その後部下方にエンジンａ
を吊り下げるようにして支持している。The lower frame 9 is connected to the upper frame 8.
The head pipe 7 extends rearward from the lower part of the head pipe 7 in a substantially straight line and extends substantially parallel to the engine a.
It is supported by hanging it.
【００１２】１２は後輪１３を支持するリヤア―ムであ
り、略三角形状の枠体とされその上部棒１２ａがシ―ト
３下方の車体フレ―ムＡ内側に設置された１本の緩衝器
１４に連結されており、該リヤア―ム１２はロアフレ―
ム９の後部に枢着１２ｂされていると共に後輪を支持す
るようになっている。また、前記緩衝器１４の上端は前
記アッパフレ―ム８の後端部に接続されている。Reference numeral 12 designates a rear arm that supports the rear wheel 13, and has a substantially triangular frame whose upper bar 12a is connected to a single shock absorber installed inside the vehicle body frame A below the seat 3. The rear arm 12 is connected to the lower frame 14.
It is pivotally attached 12b to the rear of the wheel 9 and supports the rear wheel. Further, the upper end of the buffer 14 is connected to the rear end of the upper frame 8.
【００１３】１５はゼッケンプレ―ト１５ｂと一体に形
成されたフロントフェンダであり、フロントフォ―ク５
の上部前方に取付けられている。このフロントフェンダ
１５はフロントフォ―ク５の前方にのみ泥除け部１５ａ
を有し、従来のフェンダの後半部を省略した形態となっ
ている。15 is a front fender formed integrally with the number plate 15b, and the front fork 5
is installed at the top and front of the This front fender 15 has a mudguard part 15a only in front of the front fork 5.
It has a configuration in which the rear half of the conventional fender is omitted.
【００１４】なお、１６はエアクリ―ナ、１７はそのケ
―ス、１９はエアクリ―ナ１６の取付ステ―、２０はロ
アフレ―ム９に設けたブラケット、２１は吸気ダクト、
２２は吸気出口、２３は気化器１へのダクトである。Note that 16 is an air cleaner, 17 is its case, 19 is a mounting stay for the air cleaner 16, 20 is a bracket provided on the lower frame 9, 21 is an intake duct,
22 is an intake outlet, and 23 is a duct to the carburetor 1.
【００１５】以上のような構成からなる自動二輪車の車
体フレ―ム構造であるので、前後輪間に配設されたエン
ジンａは車体フレ―ムＡによって充分に支持され、また
、後輪１３は車体フレ―ムの後部に枢着されたリヤア―
ムにより揺動自在に保持され、更に後輪１３の上下移動
は緩衝器１４が車体フレ―ムＡに接続されていることか
ら車体に対して柔らかく伝達される。Since the body frame structure of the motorcycle is constructed as described above, the engine a disposed between the front and rear wheels is sufficiently supported by the body frame A, and the rear wheel 13 is Rear arm pivoted to the rear of the vehicle body frame
Further, since the shock absorber 14 is connected to the vehicle body frame A, the vertical movement of the rear wheel 13 is smoothly transmitted to the vehicle body.
【００１６】また、前後輪からのよじれや衝撃力に対し
ては３本のフレ―ム８，９がこれを分担して受け持つの
で、その力に充分に耐え得る。また、ロアフレ―ム９は
、ヘッドパイプ７の下部から略直線状に延びているので
、その長さは比較的に短くなる。Furthermore, since the three frames 8 and 9 share the burden of twisting and impact forces from the front and rear wheels, they can withstand the forces sufficiently. Furthermore, since the lower frame 9 extends substantially linearly from the lower part of the head pipe 7, its length is relatively short.
【００１７】[0017]
【発明の効果】本発明は、車体フレ―ムをヘッドパイプ
上部から後方へ延びる１本の短いアッパフレ―ムとヘッ
ドパイプ下部から略直線状に後方へ延びる左右一対の長
いロアフレ―ムとで構成したので、充分な強度を有する
フレ―ムでありながら、全体的に軽量なフレ―ムとする
ことができる。[Effects of the Invention] According to the present invention, the vehicle body frame is composed of one short upper frame extending rearward from the upper part of the head pipe, and a pair of left and right long lower frames extending rearward in a substantially straight line from the lower part of the head pipe. Therefore, although the frame has sufficient strength, it can be made lightweight overall.
【図１】本発明に係る車体フレ―ム構造をもちいた自動
二輪車の側面図である。FIG. 1 is a side view of a motorcycle using a body frame structure according to the present invention.
【図２】図１のイ―イ拡大断面図である。FIG. 2 is an enlarged cross-sectional view taken along line II in FIG. 1;
Ａ 車体フレ―ム ａ エンジン ６ 前輪 ７ ヘッドパイプ ８ アッパフレ―ム ９ ロアフレ―ム １２ リヤア―ム １２ｂ 枢着部 １３ 後輪 １４ 緩衝器 A Vehicle body frame a Engine 6 Front wheel 7 Head pipe 8 Upper frame 9 Lower frame 12 Rear arm 12b Pivot joint 13 Rear wheel 14 Buffer
Claims (1)
フレ―ムで支持し、該車体フレ―ムをヘッドパイプから
後方へ延出させ、該後部に後輪を支持するリヤア―ムを
枢着し、該リヤア―ムと前記車体フレ―ムの間に緩衝器
を介設させた自動二輪車において、前記車体フレ―ムを
ヘッドパイプ上部から後方へ延びる１本の短いアッパフ
レ―ムとヘッドパイプ下部から略直線状に後方へ延びる
左右一対の長いロアフレ―ムとで構成し、前記アッパフ
レ―ムの後部と前記左右のロアフレ―ムを連結すると共
に該アッパフレ―ムの後端部に前記緩衝器の上端を接続
したことを特徴とする自動二輪車の車体フレ―ム構造。Claim 1: An engine disposed between the front and rear wheels is supported by a body frame, the body frame extends rearward from a head pipe, and a rear arm supporting the rear wheels is provided at the rear part of the body frame. In a motorcycle which is pivotally mounted and has a shock absorber interposed between the rear arm and the body frame, the body frame is connected to a head and a short upper frame extending rearward from the upper part of the head pipe. It is composed of a pair of left and right long lower frames extending rearward in a substantially straight line from the lower part of the pipe, and connects the rear part of the upper frame to the left and right lower frames, and the buffer is attached to the rear end of the upper frame. A motorcycle body frame structure characterized by connecting the upper ends of the containers.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3185830A JP2537437B2 (en) | 1991-07-01 | 1991-07-01 | Motorcycle body frame structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3185830A JP2537437B2 (en) | 1991-07-01 | 1991-07-01 | Motorcycle body frame structure |
Related Parent Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP57086212A Division JPH068624B2 (en) | 1982-05-20 | 1982-05-20 | Arrangement structure of air cleaner in motorcycle |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH04349086A true JPH04349086A (en) | 1992-12-03 |
| JP2537437B2 JP2537437B2 (en) | 1996-09-25 |
Family
ID=16177625
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP3185830A Expired - Lifetime JP2537437B2 (en) | 1991-07-01 | 1991-07-01 | Motorcycle body frame structure |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2537437B2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008189288A (en) * | 2007-02-06 | 2008-08-21 | Shogo Nakagawa | Motorcycle |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5568487A (en) * | 1978-11-11 | 1980-05-23 | Yamaha Motor Co Ltd | Engine mounting construction of rhombic frame |
| JPS55127269A (en) * | 1979-03-26 | 1980-10-01 | Honda Motor Co Ltd | Frame structure of autobicycle |
| JPS577774A (en) * | 1980-06-19 | 1982-01-14 | Honda Motor Co Ltd | Autobicycle |
| JPS5746014A (en) * | 1980-09-02 | 1982-03-16 | Honda Motor Co Ltd | Supercharger for motorcycle |
-
1991
- 1991-07-01 JP JP3185830A patent/JP2537437B2/en not_active Expired - Lifetime
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5568487A (en) * | 1978-11-11 | 1980-05-23 | Yamaha Motor Co Ltd | Engine mounting construction of rhombic frame |
| JPS55127269A (en) * | 1979-03-26 | 1980-10-01 | Honda Motor Co Ltd | Frame structure of autobicycle |
| JPS577774A (en) * | 1980-06-19 | 1982-01-14 | Honda Motor Co Ltd | Autobicycle |
| JPS5746014A (en) * | 1980-09-02 | 1982-03-16 | Honda Motor Co Ltd | Supercharger for motorcycle |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008189288A (en) * | 2007-02-06 | 2008-08-21 | Shogo Nakagawa | Motorcycle |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2537437B2 (en) | 1996-09-25 |
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