JPS62191287A - Car-body frame structure of motorcycle - Google Patents
Car-body frame structure of motorcycleInfo
- Publication number
- JPS62191287A JPS62191287A JP3068486A JP3068486A JPS62191287A JP S62191287 A JPS62191287 A JP S62191287A JP 3068486 A JP3068486 A JP 3068486A JP 3068486 A JP3068486 A JP 3068486A JP S62191287 A JPS62191287 A JP S62191287A
- Authority
- JP
- Japan
- Prior art keywords
- body frame
- motorcycle
- pair
- main frame
- frame structure
- 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
- 230000003014 reinforcing effect Effects 0.000 claims description 16
- 229910001234 light alloy Inorganic materials 0.000 claims description 8
- 238000003466 welding Methods 0.000 description 10
- 229910000838 Al alloy Inorganic materials 0.000 description 3
- 239000000956 alloy Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 230000002787 reinforcement Effects 0.000 description 1
- 230000008719 thickening Effects 0.000 description 1
Landscapes
- Automatic Cycles, And Cycles In General (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) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.
Description
【発明の詳細な説明】
［発明の技術分野〕
本発明は自動二輪車の車体フレーム構造に関するもので
ある。DETAILED DESCRIPTION OF THE INVENTION [Technical Field of the Invention] The present invention relates to a body frame structure for a motorcycle.
自動二輪車の車体フレームとして、アルミニウム合金等
の軽合金製主フレームを左右一対設け、その前端を操向
軸管に接続すると共に後端をそれぞれ左右一対のバック
ステーに接続するようにしたものがある。従来、このよ
うな車体フレームでは、シートを支持するためのシート
レールは、その前端部が主フレームの長手方向の途中に
溶接により取り付けられていた。Some motorcycle body frames include a pair of left and right main frames made of light alloy such as aluminum alloy, the front ends of which are connected to a steering shaft tube, and the rear ends of which are connected to a pair of left and right backstays, respectively. . Conventionally, in such a vehicle body frame, the front end of the seat rail for supporting the seat has been attached by welding to the main frame midway in the longitudinal direction.
ところが、このように主フレームの長手方向の途中にシ
ートレールの前端が取り付けられる構造では、その主フ
レームの取付は位置にシートからの荷重により応力集中
が起こり、またアルミニウム合金等の軽合金材料では溶
接による脆化は避けられない。このため、このような応
力集中或いは脆化による強度低下を補うため主フレーム
を厚肉化したり、他の補強部材で補強するようにしてい
た。しかし、このような主フレームの厚肉化や補強部材
による補強は、それだけ重量増加を招き、かつコスト上
昇の原因になっていた。However, in a structure where the front end of the seat rail is attached midway in the longitudinal direction of the main frame, stress concentration occurs at the main frame attachment position due to the load from the seat, and light alloy materials such as aluminum alloy Embrittlement due to welding is unavoidable. Therefore, in order to compensate for the decrease in strength due to such stress concentration or embrittlement, the main frame has been made thicker or reinforced with other reinforcing members. However, increasing the thickness of the main frame and reinforcing it with reinforcing members increases weight and costs.
本発明の目的は、上述のような軽合金製の車体フレーム
において、シートレールの組み付けに伴う主フレームの
厚肉化や余分な補強部材による補強をなくすことができ
る自動二輪車の車体フレーム構造を提供することにある
。An object of the present invention is to provide a body frame structure for a motorcycle that can eliminate the need for thickening of the main frame due to the assembly of seat rails and reinforcement by extra reinforcing members in a light alloy body frame as described above. It's about doing.
上記目的を達成する本発明は、左右一対の軽合金製の主
フレームの前端を操向軸管に接続し、後端を左右一対の
バックステーにそれぞれ接続した自動二輪車の車体フレ
ームにおいて、前記左右一対のバックステーまたはこれ
らを横方向に連結する補強部材のいずれかに、シートレ
ールの前端を取り付けたことを特徴とするものである。To achieve the above object, the present invention provides a body frame for a motorcycle in which the front ends of a pair of left and right main frames made of light alloy are connected to a steering shaft tube, and the rear ends are respectively connected to a pair of left and right backstays. It is characterized in that the front end of the seat rail is attached to either a pair of backstays or a reinforcing member that connects them laterally.
第１図および第２図において、１は操向軸管、２は主フ
レーム、３はバックステー、４はダウンチューブである
。このうち主フレーム２、バックステー３、ダウンチュ
ーブ４はそれぞれ左右一対設けられ、また操向軸管１と
バックステー３とはアルミニウム合金等の軽合金からな
る鋳造型であり、主フレーム２は同じ軽合金の板金型か
らなっている。左右一対の主フレーム２゜２の前端は操
向軸管１の後部左右に溶接され、また後端はそれぞれ左
右一対のバックステー３゜３に溶接されている。左右の
バックステー３゜３の間は、それらの上端部同士および
上端部同士がそれぞれ横補強部材７．８の溶接により連
結されて補強されている。In FIGS. 1 and 2, 1 is a steering shaft tube, 2 is a main frame, 3 is a backstay, and 4 is a down tube. Among these, the main frame 2, the back stay 3, and the down tube 4 are each provided in pairs on the left and right, and the steering shaft tube 1 and the back stay 3 are cast molds made of light alloy such as aluminum alloy, and the main frame 2 is the same. It consists of a light alloy sheet metal mold. The front ends of the pair of left and right main frames 2.degree. 2 are welded to the rear left and right sides of the steering shaft tube 1, and the rear ends are welded to the pair of left and right backstays 3.3, respectively. The left and right backstays 3.degree. 3 are reinforced by connecting their upper ends to each other and to each other by welding horizontal reinforcing members 7.8.
このように構成された車体フレームは、主フレーム２，
２、バックステー３．３、ダウンチューブ４．４に囲ま
れた空間域にエンジン６を搭載し、またバックステー３
，３には、後輪支持用のリヤアーム５．５の前端を枢支
するようにしている。The vehicle body frame configured in this way includes the main frame 2,
2. The engine 6 is mounted in the space surrounded by the backstay 3.3 and the down tube 4.4, and the backstay 3.
, 3, the front end of a rear arm 5.5 for supporting the rear wheel is pivotally supported.
一方、１０．１０はシート９を支持するための左右一対
のシートレールで、それらの前端はバックステー３．３
に一体の横補強部材７の上面に溶接されている。シート
レール１０．１０の前端の溶接位置は、上述のように横
補強部材７に対してせず、第３図の実施例のようにバッ
クステー３．３に対して溶接するようにしてもよい。或
いは、このような溶接によらず、溶接されたブラケット
を介してボルト止めしてもよい。このように前端が溶接
またはボルト止めされたシートレール１０．１０は、そ
の中間部の下面をステー１１．１１によって支えられ、
かつそのステー１１．１１の下端はそれぞれバックステ
ー３．３の後部に溶接またはボルト止めにより取り付け
られている。On the other hand, 10.10 is a pair of left and right seat rails for supporting the seat 9, and their front ends are connected to the backstay 3.3.
It is welded to the upper surface of the horizontal reinforcing member 7 which is integral with the lateral reinforcing member 7. The welding position of the front end of the seat rail 10.10 may not be welded to the lateral reinforcing member 7 as described above, but may be welded to the backstay 3.3 as in the embodiment shown in FIG. . Alternatively, instead of such welding, it may be bolted through a welded bracket. The seat rail 10.10, whose front end is welded or bolted in this way, is supported by the stay 11.11 on the lower surface of its middle part,
The lower ends of the stays 11.11 are each attached to the rear of the back stay 3.3 by welding or bolting.
上述した車体フレームでは、シートレール１０．１０の
前端の取付は位置が第３図の実施例のようにバックステ
ー３．３に対してか、または第１．２図の実施例のよう
にバックステー３゜３を補強する横補強部材７に対して
であるため、 ｌ従来の主フレーム２．２の途中に取り
付ける構造のように、その主フレーム２に対する応力集
中や、また溶接の場合その溶接による脆化を招くことは
ない。したがって、その応力集中や脆化を補うための主
フレーム２の厚肉化や他の補強部材による補強は不要で
あり、それによって車体フレームを軽量化することがで
きる。In the body frame described above, the front end of the seat rail 10.10 is mounted either in position relative to the backstay 3.3, as in the embodiment of FIG. 3, or at the back, as in the embodiment of FIG. Since this is for the horizontal reinforcing member 7 that reinforces the stay 3゜3, as in the conventional structure where it is attached in the middle of the main frame 2.2, there is stress concentration on the main frame 2, and in the case of welding, the welding This will not cause embrittlement. Therefore, it is not necessary to increase the thickness of the main frame 2 or to reinforce it with other reinforcing members to compensate for stress concentration and embrittlement, thereby making it possible to reduce the weight of the vehicle body frame.
上述したように本発明は、左右一対の軽合金製の主フレ
ームの前端を操向軸管に接続し、後端を左右一対のバッ
クステーにそれぞれ接続した自動二輪車の車体フレーム
において、前記左右一対のバックステーまたはこれらを
横方向に連結する補強部材のいずれかに、シートレール
の前端を取り付けたので、主フレームの途中に応力集中
、或いは溶接の場合にはその溶接による脆化は発生せず
、そのため主フレームを厚肉化したり、あるいは他の補
強部材で補強する必要がなく、軽量化を可能にする。As described above, the present invention provides a body frame for a motorcycle in which the front ends of a pair of left and right main frames made of light alloy are connected to a steering shaft tube, and the rear ends are respectively connected to a pair of left and right backstays. Since the front end of the seat rail is attached to either the backstay or the reinforcing member that connects them laterally, there is no stress concentration in the middle of the main frame, or embrittlement due to welding in the case of welding. Therefore, there is no need to increase the thickness of the main frame or to reinforce it with other reinforcing members, making it possible to reduce the weight.
第１図は本発明の実施例による車体フレームを示す斜視
図、第２図は同車体フレームを装備した自動二輪車の側
面図、第３図は本発明の他の実施例による車体フレーム
の要部を示す斜視図である。
１−操向軸管、 ２−・−生フレーム、 ３・−・バッ
クステー、 ７，８・・−横補強部材、 ９−・・シー
ト、 １０−シートレール、 １１−ステー。FIG. 1 is a perspective view showing a body frame according to an embodiment of the present invention, FIG. 2 is a side view of a motorcycle equipped with the body frame, and FIG. 3 is a main part of a body frame according to another embodiment of the present invention. FIG. 1-steering shaft tube, 2-- raw frame, 3-- back stay, 7, 8-- lateral reinforcing member, 9-- seat, 10- seat rail, 11- stay.
Claims (1)
続し、後端を左右一対のバックステーにそれぞれ接続し
た自動二輪車の車体フレームにおいて、前記左右一対の
バックステーまたはこれらを横方向に連結する横補強部
材のいずれかに、シートレールの前端を取り付けたこと
を特徴とする自動二輪車の車体フレーム構造。In a motorcycle body frame in which the front ends of a pair of left and right main frames made of light alloy are connected to a steering shaft tube, and the rear ends are connected to a pair of left and right backstays, respectively, the pair of left and right backstays or these are connected in a lateral direction. A body frame structure for a motorcycle, characterized in that the front end of a seat rail is attached to one of the lateral reinforcing members connected to the lateral reinforcing member.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61030684A JPH0774019B2 (en) | 1986-02-17 | 1986-02-17 | Motorcycle body frame structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61030684A JPH0774019B2 (en) | 1986-02-17 | 1986-02-17 | Motorcycle body frame structure |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS62191287A true JPS62191287A (en) | 1987-08-21 |
| JPH0774019B2 JPH0774019B2 (en) | 1995-08-09 |
Family
ID=12310512
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP61030684A Expired - Fee Related JPH0774019B2 (en) | 1986-02-17 | 1986-02-17 | Motorcycle body frame structure |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0774019B2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6444293U (en) * | 1987-09-14 | 1989-03-16 |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS60191889A (en) * | 1984-11-22 | 1985-09-30 | 本田技研工業株式会社 | Car body frame for motorcycle |
| JPS60197477A (en) * | 1984-03-21 | 1985-10-05 | ヤマハ発動機株式会社 | Car body frame structure of motorcycle |
| JPS6236978U (en) * | 1985-08-23 | 1987-03-04 |
-
1986
- 1986-02-17 JP JP61030684A patent/JPH0774019B2/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS60197477A (en) * | 1984-03-21 | 1985-10-05 | ヤマハ発動機株式会社 | Car body frame structure of motorcycle |
| JPS60191889A (en) * | 1984-11-22 | 1985-09-30 | 本田技研工業株式会社 | Car body frame for motorcycle |
| JPS6236978U (en) * | 1985-08-23 | 1987-03-04 |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6444293U (en) * | 1987-09-14 | 1989-03-16 |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0774019B2 (en) | 1995-08-09 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US4660854A (en) | Frame construction for motorcycles | |
| JP3014597B2 (en) | Cover for cabriolet vehicles | |
| JPH026670B2 (en) | ||
| JPH11278346A (en) | Vehicle body frame structure for motorcycle | |
| JPS62191287A (en) | Car-body frame structure of motorcycle | |
| JPH10226380A (en) | Cowling mounting device for motorcycle | |
| JPH0585407A (en) | Front part body structure of automobile and assembly method therefor | |
| JPS59223581A (en) | Frame for motorcycle | |
| JPH0653508B2 (en) | Rear wheel suspension system for motorcycles | |
| JPS6136072A (en) | Car body frame of motorcycle | |
| JPH04244492A (en) | Frame for motorcycle | |
| JPS61178277A (en) | Car body frame of motorcycle | |
| JPH0635700Y2 (en) | Rear suspension mounting structure reinforcement structure | |
| JP2003063472A (en) | Car body structure for motor-bicycle | |
| JPS60157974A (en) | Frame structure of motorcycle | |
| JPH0518235Y2 (en) | ||
| JP2598909B2 (en) | Body structure of motorcycle | |
| JPH09207857A (en) | Frame structure for motorcycle | |
| JPS6346312Y2 (en) | ||
| JPS63315386A (en) | Car body frame for motorcycle | |
| JPS6234881A (en) | Frame for motorcycle | |
| JPH0585400B2 (en) | ||
| JPH05178253A (en) | Car body frame of motorcycle | |
| JPH0142876B2 (en) | ||
| JPH0784191B2 (en) | Motorcycle frame |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| LAPS | Cancellation because of no payment of annual fees |