JP2000095171A - Frame structure of motorcycle - Google Patents
Frame structure of motorcycleInfo
- Publication number
- JP2000095171A JP2000095171A JP27235298A JP27235298A JP2000095171A JP 2000095171 A JP2000095171 A JP 2000095171A JP 27235298 A JP27235298 A JP 27235298A JP 27235298 A JP27235298 A JP 27235298A JP 2000095171 A JP2000095171 A JP 2000095171A
- Authority
- JP
- Japan
- Prior art keywords
- frame
- sub
- mounting
- portions
- cross
- 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
Landscapes
- Automatic Cycles, And Cycles In General (AREA)
- Motorcycle And Bicycle Frame (AREA)
Abstract
Description
【0001】[0001]
【発明の属する技術分野】本発明は、自動二輪車のフレ
ーム構造にかかり、特にエンジンを取付、支持するフレ
ームの構造に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a motorcycle frame structure, and more particularly to a frame structure for mounting and supporting an engine.
【0002】[0002]
【従来の技術】自動二輪車の車体フレームとして、例え
ば特開平9−95279号が開示されている。ここで開
示されている技術は、メインフレームを偏平なパイプ材
とし、これの後部を下方に曲げ、後部にエンジン後部の
上部を取付、支持するハンガーを別部材として接合し、
一体化する構造であり、上部のハンガーの下方に、エン
ジン後部の下部を取付、支持するブラケットを別部材と
して接合、一体化して設けている。この例に限らず、自
動二輪車における従来のエンジンハンガーは、メインフ
レームに対してエンジン、及びリヤのスイングアームを
支持するフレーム部材を別部材として接合し、且つこの
部材に、別個に形成したハンガーやブラケット類を接合
し、このハンガやブラケット類でエンジンの取付、支持
を行っている。2. Description of the Related Art As a vehicle body frame of a motorcycle, for example, Japanese Patent Laid-Open No. 9-95279 is disclosed. The technology disclosed herein is to make the main frame a flat pipe material, bend the rear part downward, attach the upper part of the engine rear to the rear part, and join the hanger to support as a separate member,
It is an integrated structure, and a bracket for attaching and supporting the lower part of the rear part of the engine is provided as a separate member and joined and integrated below the upper hanger. Not limited to this example, a conventional engine hanger in a motorcycle includes a frame member that supports an engine and a rear swing arm with a main frame as a separate member, and a hanger formed separately from the frame member. Brackets are joined, and the hanger and brackets are used to mount and support the engine.
【0003】[0003]
【発明が解決しようとする課題】以上の従来技術は、ハ
ンガやブラケット類等のエンジン取付、支持部材を、フ
レーム構成部材とは別個に形成し、フレーム構成部材に
溶接やネジ止め等で接合、一体化した構造なので、部品
点数が多くなること、溶接等の組付工数が多く、フレー
ム構造の複雑化、製作に際し工数が多くなること、又こ
れにより重量が重くなる傾向にあること、更にこれ等の
エンジン取付、支持部材を別個に設けることから、フレ
ーム製造に際しコスト的にも不利であること、トータル
として自動二輪車のコストダウンを図る上で好ましくな
いこと、等の不利がある。In the above prior art, the engine mounting and support members such as hangers and brackets are formed separately from the frame components, and are joined to the frame components by welding or screwing. Because of the integrated structure, the number of parts increases, the number of man-hours required for welding etc. increases, the frame structure becomes complicated, the number of man-hours required for manufacturing increases, and this tends to increase the weight. Since the engine mounting and support members such as are separately provided, there are disadvantages in that it is disadvantageous in terms of cost when manufacturing the frame, and it is not preferable in reducing the cost of the motorcycle as a whole.
【0004】本発明は、以上の課題を解決すべくなされ
たもので、本発明の目的とする処は、エンジン取付、支
持部を含むフレームを、簡素な構造で、製作上容易に、
且つ安価に得ることを可能とした自動二輪車のフレーム
構造を提供し、又高い剛性、強度を確保しつつ、軽量な
フレームを得ることが可能である自動二輪車のフレーム
構造を提供することにある。SUMMARY OF THE INVENTION The present invention has been made to solve the above problems, and an object of the present invention is to provide a simple structure in which a frame including an engine mounting and a support portion is manufactured with a simple structure.
It is another object of the present invention to provide a motorcycle frame structure that can be obtained at a low cost and that can obtain a lightweight frame while securing high rigidity and strength.
【0005】[0005]
【課題を解決するための手段】上記課題を解決するため
に請求項1は、ヘッドパイプから後方に延びるメインフ
レームから、該メインフレームの下方に向けて断面視コ
字状の金属板材のプレス成形されたサブフレームメンバ
を接合して垂下し、サブフレームメンバに、プレス加工
で部品取付部を一体に設けた。In order to solve the above-mentioned problems, a first aspect of the present invention is to press-form a metal plate having a U-shaped cross section from a main frame extending rearward from a head pipe toward a lower side of the main frame. The assembled sub-frame members were joined and hung down, and the sub-frame members were integrally provided with component mounting portions by press working.
【0006】請求項1では、サブフレームメンバに部品
取付部を一体に設けるので、部品取付部を別部材とし、
これを溶接したり、ネジ止めする等の必要がなく、部品
点数の削減、工数削減、軽量化、コストダウンを図るこ
とができる。又サブフレームメンバは、断面視コ字形な
ので、メインフレームへの溶接等の接合に際し、溶接等
がし易く、溶接面積等の接合面積も稼ぎやすく、高い剛
性、強度のメインフレームへのサブフレームメンバの接
合が容易に可能である。According to the first aspect of the present invention, since the component mounting portion is provided integrally with the sub-frame member, the component mounting portion is formed as a separate member.
There is no need to weld or screw this, and it is possible to reduce the number of parts, reduce man-hours, reduce weight, and reduce costs. Also, since the sub-frame member has a U-shape in cross section, it is easy to perform welding, etc. when joining to the main frame by welding, etc., and it is easy to gain a joint area such as a welding area, and the sub-frame member to the high rigidity and strength main frame. Can be easily joined.
【0007】請求項2は、請求項1記載において、部品
取付部を、エンジンハンガ部とした。従来のように、メ
インフレームに設けられるサブフレームメンバに、別部
材として上下のエンジンハンガーやブラケットを溶接等
する必要がなく、フレームの構造の簡素化、製作の容易
化、コストダウン、軽量化が図れる。According to a second aspect, in the first aspect, the component mounting portion is an engine hanger portion. It is not necessary to weld the upper and lower engine hangers and brackets as separate members to the sub-frame members provided on the main frame, as in the conventional case. This simplifies the structure of the frame, simplifies manufacturing, reduces costs and reduces weight. I can do it.
【0008】請求項3は、請求項1記載において、サブ
フレームメンバの内側に、断面視コ字状の補強メンバを
配置し、該サブフレームメンバと補強メンバとを接合、
一体化した。請求項3では、サブフレームメンバと補強
メンバとの接合したので、閉断面構造体となり、エンジ
ン取付、支持部等の部品取付部に高い剛性、強度が得ら
れ、又コ字形のサブフレームメンバ内にコ字形の補強メ
ンバを嵌め込んで溶接等して接合するので、製作も容易
である。According to a third aspect of the present invention, in the first aspect, a reinforcing member having a U-shaped cross section is disposed inside the sub-frame member, and the sub-frame member and the reinforcing member are joined.
Integrated. According to the third aspect of the present invention, since the sub-frame member and the reinforcing member are joined to each other, the structure becomes a closed-section structure, and high rigidity and strength can be obtained in a component mounting portion such as an engine mounting portion and a support portion. Since a U-shaped reinforcing member is fitted into the joints and joined by welding or the like, manufacture is easy.
【0009】[0009]
【発明の実施の形態】本発明の実施の形態を添付図に基
づいて以下に説明する。なお、図面は符号の向きに見る
ものとする。図1は本発明にかかるフレーム構造を採用
した自動二輪車の一例を示す外観側面図、図2は図1の
平面図である。図1、図2に従って自動二輪車の概略を
説明すると、自動二輪車1は、後に詳細に説明するフレ
ーム21の前端部のヘッドパイプ22を介して、フロン
トフォーク3により前輪2を操向自在に支持する。フレ
ーム21の中間部下部から後方に延出したスイングアー
ム4を介して後輪5を支持し、スイングアーム4の後部
とフレーム21との間には、後輪懸架用のリヤクッショ
ンユニット6,6を左右に介設する。Embodiments of the present invention will be described below with reference to the accompanying drawings. The drawings should be viewed in the direction of reference numerals. FIG. 1 is an external side view showing an example of a motorcycle employing a frame structure according to the present invention, and FIG. 2 is a plan view of FIG. The outline of the motorcycle will be described with reference to FIGS. 1 and 2. The motorcycle 1 is supported by a front fork 3 so as to be steerable by a front fork 3 via a head pipe 22 at a front end of a frame 21 which will be described in detail later. . A rear wheel 5 is supported via a swing arm 4 extending rearward from a lower portion of a middle portion of the frame 21, and a rear cushion unit 6, 6 for rear wheel suspension is provided between a rear portion of the swing arm 4 and the frame 21. Are interposed on the left and right.
【0010】フレーム21の前部上には燃料タンク7を
設置し、フレーム30のこれの後方上には乗員跨乗用の
シート8を設置し、フレーム30の燃料タンク7下方位
置には、エンジン9を搭載し、エンジン9の下部後部の
ミッションケース10の一側方にはドライブスプロケッ
ト10aを配置し、後輪5の同側に設けたドリブンスプ
ロケット5aとチエン10で連結し、後輪5を駆動す
る。フロントフォーク3の前部の上部にはヘッドライト
12を設置し、ヘッドライト12の直後で、フロントフ
ォーク3の上端部のトップブリッジ上には、バー式のハ
ンドル13を設置し、ハンドル13の前方にはメータユ
ニット14を設置する。A fuel tank 7 is installed on the front of the frame 21, an occupant seat 8 is installed on the rear of the frame 30, and an engine 9 is mounted on the frame 30 below the fuel tank 7. A drive sprocket 10a is arranged on one side of a transmission case 10 at a lower rear portion of the engine 9, and is connected to a driven sprocket 5a provided on the same side of the rear wheel 5 by a chain 10, thereby driving the rear wheel 5. I do. A headlight 12 is installed above the front of the front fork 3, and a bar-type handle 13 is installed immediately above the headlight 12 on the top bridge at the upper end of the front fork 3. Is provided with a meter unit 14.
【0011】前記したシート7の前部の下方の左右に
は、サイドカウル15,15を配置してこの部分の側部
を覆い、シート7の前後方向中間部〜後方の部分の側部
をリヤカウル16,16で覆い、リヤカウル16,16
の後部には、リヤフェンダ17を後下方に傾斜するよう
に設置した。尚、前輪2の上半部をフロントフェンダ2
aで覆う。シート8は前後に長いタンデム式とし、シー
ト後部の下部の左右には後席乗員把持、自動二輪車のメ
インスタンド起立時に手掛かりとするリヤグリップ18
を設置し、リヤグリップ18は、図2で明示したように
平面視が略U字形である。尚、エンジン9のシリンダ後
方に配置された気化器19は、サイドカバー15の隠さ
れた後方の空間に配置される不図示のエアクリーナに接
続されている。又図2において20は、自動二輪車1の
後部の一側方の後方、且つ外側方に延出されたマフラー
である。Side cowls 15, 15 are disposed on the left and right below the front portion of the seat 7 to cover the side portions of this portion, and the side portions of the middle portion of the seat 7 in the front-rear direction to the rear portion are rear cowls. Cover with 16, 16 and rear cowl 16, 16
The rear fender 17 is installed at the rear of the vehicle so as to be inclined downward and rearward. The upper half of the front wheel 2 is the front fender 2
Cover with a. The seat 8 is a tandem type that is long in the front and rear directions. Rear grips 18 are provided on the left and right lower portions of the rear portion of the seat to hold rear passengers and to provide clues when the main stand of the motorcycle stands.
The rear grip 18 is substantially U-shaped in plan view as clearly shown in FIG. The carburetor 19 disposed behind the cylinder of the engine 9 is connected to an air cleaner (not shown) disposed in a space behind the side cover 15 hidden behind. In FIG. 2, reference numeral 20 denotes a muffler extending rearward on one side of the rear part of the motorcycle 1 and extending outward.
【0012】図3は本発明にかかるフレームの外観側面
図である。フレーム21は、自動二輪車の略々全長にわ
たる長さで、前後に長いメインフレーム30と、メイン
フレーム30の前端部〜前部の中間部の両側に、後下傾
するように溶接したフロントメンバ40と、メインフレ
ーム30の中間部に若干後下傾するように垂下したミド
ルメンバ50と、メインフレーム30の後部〜ミドルメ
ンバ50の下部とを繋ぐように配置したリヤメンバ70
とからなる。リヤメンバ70と前方のミドルメンバ50
と上方のメインフレーム30とで構成される略三角形の
空間23内に、不図示のエアクリーナを配置する。又メ
インフレーム30の前端部には、ヘッドパイプ22を若
干前下傾するように備える。メインフレーム30の上面
は、前部〜中間部が若干下方に弯曲し、中間部と前後部
とで高さに違いがあり、後部が一段高くなるように形成
したが、上面は略々平坦であり、略々水平に近い状態で
前後方向に延出する。メインフレーム30の後部には、
前記したシート8の後部を取付、支持するスティ81が
下方に垂下するように設けられている。FIG. 3 is an external side view of the frame according to the present invention. The frame 21 has a length substantially the entire length of the motorcycle, a long front and rear main frame 30, and a front member 40 that is welded to both sides of a front end to a middle portion of the front end of the main frame 30 so as to tilt rearward and downward. And a middle member 50 hanging down to a middle portion of the main frame 30 so as to tilt slightly downward, and a rear member 70 arranged to connect a rear portion of the main frame 30 to a lower portion of the middle member 50.
Consists of Rear member 70 and front middle member 50
An air cleaner (not shown) is arranged in a substantially triangular space 23 formed by the main frame 30 and the upper frame. A head pipe 22 is provided at the front end of the main frame 30 so as to be slightly inclined forward and downward. The upper surface of the main frame 30 is formed so that the front part to the middle part is slightly curved downward, there is a difference in height between the middle part and the front and rear parts, and the rear part is one step higher, but the upper surface is substantially flat. Yes, it extends in the front-rear direction in a substantially horizontal state. At the rear of the mainframe 30,
A stay 81 for attaching and supporting the rear portion of the sheet 8 is provided so as to hang downward.
【0013】図4は図3の平面図である。メインフレー
ム30は、図で示したように前部30aの幅W1が幅狭
で、後部30cの幅W2が幅広に形成され、中間部30
bは、この間を一体に繋ぐように、後方に向かって幅が
斬増する。FIG. 4 is a plan view of FIG. As shown in the figure, the main frame 30 is formed such that the width W1 of the front portion 30a is narrow, the width W2 of the rear portion 30c is wide, and the middle portion 30 is formed.
The width of b increases rearward so as to integrally connect the spaces.
【0014】図5はフレーム21の構成メンバの分解斜
視図である。メインフレーム30は、断面形状が下向き
凹状のアッパメンバ31、及び断面形状が上向き凹状の
ロアメンバ32とからなり、上下で対称形状をなす。各
前端部には、ヘッドパイプ22の上部の後半部が嵌まる
弧状の凹部31a(ロアメンバ32には表されていない
が、同様に凹部を備える)を備える。これ等のアッパメ
ンバ31、ロアメンバ32は、例えば、鋼板素材のプレ
ス加工で成形する。アッパメンバ31、ロアメンバ32
の左右の側壁部31b,32bの対向する両端部には、
各外側方に折曲して突出するフランジ部31c,32c
を夫々一体に設ける。FIG. 5 is an exploded perspective view of the constituent members of the frame 21. The main frame 30 is composed of an upper member 31 having a downward concave cross section and a lower member 32 having a downward concave cross section, and has a vertically symmetric shape. Each front end is provided with an arc-shaped concave portion 31a (not shown in the lower member 32, but also provided with a concave portion) in which the upper rear half of the head pipe 22 fits. The upper member 31 and the lower member 32 are formed by, for example, pressing a steel plate material. Upper member 31, Lower member 32
Opposite ends of the left and right side walls 31b, 32b
Flange portions 31c, 32c bent outward and projected
Are provided integrally.
【0015】アッパメンバ31の上面31dは略々平坦
で、前部の前後方向中間部で、幅方向中間部には、前後
に離間して電装品の取付ボス部31e,31fをプレス
加工で一体成形して設ける。又上面31dの後部取付ボ
ス部31fの直後には、断面が凹状の電装品取付スティ
33を溶接し、この取付スティ33を上面31d上に幅
一杯に横断するように起立、設置する。The upper surface 31d of the upper member 31 is substantially flat, and the mounting bosses 31e and 31f of the electrical component are integrally formed by pressing at the front middle part in the front-rear direction and the middle part in the width direction. Provided. Immediately after the rear mounting boss portion 31f of the upper surface 31d, an electric component mounting stay 33 having a concave cross section is welded, and the mounting stay 33 is erected and installed so as to cross the upper surface 31d as wide as possible.
【0016】又アッパメンバ31の上面31dの前後方
向中間部で、幅方向中間部には、燃料タンク7、及びシ
ート8の取付スティ34を設ける。この取付スティ34
は、上面31dを上方に膨出させ、且つ後部を切り欠い
て形成し、燃料タンク7の後部下面に設けた不図示の取
付片を取付孔34aを介してネジ止めし、又シート8の
前部の下面に設けた不図示の舌片状の取付片を切欠34
bに嵌め込んで、シート前部をメインフレーム30の上
面に支持する。この取付スティ34は、アッパメンバ3
1の上面31dに対し、プレス加工で下方から膨出する
ようにして形成するので、メインフレームの構成部材と
は別個の部材を必要とせず、且つアッパメンバ31を成
形する工程で同時に成形することができ、部品点数の削
減、別部品を溶接する必要がないことから製作が容易で
あり、又別部品を取り付ける必要がないことから軽量化
が図れる。このことは、上記した電装品の取付ボス部3
1e,31fにおいても、同様である。The fuel tank 7 and the mounting stay 34 for the seat 8 are provided at the middle part in the width direction at the middle part in the front-rear direction of the upper surface 31d of the upper member 31. This mounting stay 34
Is formed by swelling the upper surface 31d upward and notching the rear portion, and screwing a mounting piece (not shown) provided on the rear lower surface of the fuel tank 7 through a mounting hole 34a. The tongue-shaped mounting piece (not shown) provided on the lower surface of the
b, and supports the front portion of the seat on the upper surface of the main frame 30. The mounting stay 34 is attached to the upper member 3
The upper member 31 is formed so as to swell from below by press working, so that a member separate from the constituent members of the main frame is not required, and the upper member 31 can be formed simultaneously in the step of forming the upper member 31. Therefore, the number of parts can be reduced, and there is no need to weld another part, so that it is easy to manufacture, and since there is no need to attach another part, the weight can be reduced. This is because the mounting boss portion 3
The same applies to 1e and 31f.
【0017】アッパメンバ31の中間後部、及びロアメ
ンバ32の各中間後部の上下で対称部分の両側壁部31
b,32bには、両側に突出したフランジ部31c,3
2cを含んで、夫々対称的に、アッパメンバ31側が下
向き、ロアメンバ32側が上向きの弧状の凹部31g,
32gを一体に設ける。アッパメンバ31、ロアメンバ
32を上下で重ね合せ、フランジ部31c,32c相互
を突合せて重ね合わせ、溶接する際、凹部31g,32
gは円形となり、この間に、両端部でヤクッションユニ
ット6の上端部を取付、支持する軸状のクロスメンバ3
5を介在させて溶接し、メインフレーム30と一体化す
る。The side wall portions 31 of the upper and lower intermediate portions of the upper member 31 and the upper and lower symmetrical portions of the respective intermediate rear portions of the lower member 32 are formed.
b, 32b have flange portions 31c, 3 protruding on both sides.
2c, the upper member 31 side is downward and the lower member 32 side is upward symmetrically.
32g are provided integrally. When the upper member 31 and the lower member 32 are vertically overlapped and the flange portions 31c and 32c are abutted and overlapped and welded, the concave portions 31g and 32 are used.
g is a circle, between which the shaft-shaped cross member 3 for attaching and supporting the upper end of the cushion unit 6 at both ends is provided.
5 and welded together to integrate with the main frame 30.
【0018】この際、正面視凹状のリヤカウル取付ステ
ィ36を上面31d上に配置し、取付スティ36の左右
の側壁36aの下端部をクロスメンバ35の両端寄り部
上半部に溶接し、又前後の突出片36b,36bをアッ
パメンバ31の上面31dのこの部分に溶接する。尚、
アッパメンバ31のこの部分の上面には、上方へ膨出す
る取付ベースを一体にプレス加工で形成しておき、この
部分の上面に前後の突出片36b,36bを溶接する。At this time, the rear cowl mounting stay 36 having a concave shape as viewed from the front is disposed on the upper surface 31d, and the lower ends of the left and right side walls 36a of the mounting stay 36 are welded to the upper halves near both ends of the cross member 35. Are welded to this portion of the upper surface 31d of the upper member 31. still,
On the upper surface of this portion of the upper member 31, a mounting base that swells upward is formed integrally by press working, and front and rear protruding pieces 36b, 36b are welded to the upper surface of this portion.
【0019】アッパメンバ31の上面31dの後部に
は、前後方向に長さを有する凹状のリブ37を複数個プ
レス加工で形成しておき、剛性を高めた。又上面31d
の後部には、その前部に左右2個、後部に1個のリヤグ
リップ取付孔39…(…は複数を表す。以下同じ)を備
える。一方、ロアメンバ32の中間部の側部には、エン
ジン補機類の取付スティ38を前後に設けた取付片38
a,38aで溶接する。At the rear of the upper surface 31d of the upper member 31, a plurality of concave ribs 37 having a length in the front-rear direction are formed by press working to increase rigidity. Also upper surface 31d
The rear part is provided with two rear grip mounting holes 39 at the front and one rear grip mounting hole 39 at the rear. On the other hand, on the side of the middle part of the lower member 32, there are provided mounting pieces 38 provided with mounting stays 38 for engine accessories in the front and rear.
a, welding at 38a.
【0020】フロントメンバ40は、図3に示したよう
に、ヘッドチューブ22後半部、メインフレーム30の
前半部の前端部、及び上縁部を繋ぐものである。フロン
トメンバ40は、所謂ダウンチューブの上半部に相当す
る構造で、鋼板素材をプレス加工した得た側面視略
「く」字形の左右のメンバ41,41からなる。左右の
各板状部41aの上下を内方に折曲し、各板状部の全体
の断面が凹状である。各板状部41aの各下壁片41b
には、内方への凸片41cを夫々備え、各板状部41a
の上縁部には、この面よりも内方にZ字形に折曲して突
出した上壁片41fを夫々備える。又各板状部41aの
先部には、対称的に外側方へ膨出円形部42を夫々備
え、各膨出円形部42には、燃料タンク7の前部を取り
付けるパイプ状の取付スティ43を貫通する取付孔43
aを夫々備える。As shown in FIG. 3, the front member 40 connects the rear half of the head tube 22, the front end of the front half of the main frame 30, and the upper edge. The front member 40 has a structure corresponding to the upper half of a so-called down tube, and includes left and right members 41, 41 each of which is formed by pressing a steel plate material and has a substantially "L" shape in a side view. The upper and lower portions of each of the left and right plate portions 41a are bent inward, and the entire cross section of each plate portion is concave. Each lower wall piece 41b of each plate-shaped portion 41a
Each has an inwardly projecting piece 41c, and each plate-like portion 41a
The upper edge portion is provided with an upper wall piece 41f which is bent inward from the surface and bent in a Z-shape. Each of the plate portions 41a has a symmetrically outwardly protruding circular portion 42 at the front end thereof, and each of the protruding circular portions 42 has a pipe-like mounting stay 43 for mounting the front portion of the fuel tank 7. Mounting hole 43 penetrating through
a.
【0021】又各板状部41aの中間部には、略々三角
形の軽量化用の窓44を夫々備え、窓44の周縁部には
内方に折曲した縁部44aを設け、剛性を高めた。各板
状部41aには、後下傾する下部延出部41dを夫々備
え、この部分の断面形状も、左右で対称的な凹状とし、
上述の下壁片41bはそのままこの部分の下方まで延長
する。板状部41aの側面視略「く」字形の後縁部に
は、各内方、且つ後方に折曲したZ字形の後壁片41e
を夫々備える。各下部延出部41dの下部には、上下に
離間して取付孔45,45を夫々備え、下部延出部41
d間にパイプ材からなるクロスメンバ46,46を通
す。A substantially triangular lightening window 44 is provided in the middle of each plate-like portion 41a, and an inwardly bent edge 44a is provided at the periphery of the window 44 to increase rigidity. Enhanced. Each plate-shaped portion 41a is provided with a lower extending portion 41d inclined backward and downward, and the cross-sectional shape of this portion is also a left-right symmetric concave shape,
The above-mentioned lower wall piece 41b extends to below this portion as it is. The rear edge 41e of the Z-shaped rear wall bent inwardly and rearwardly is provided at the rear edge of the plate-shaped portion 41a.
Are provided. At the lower portion of each lower extension portion 41d, mounting holes 45, 45 are provided, which are vertically separated from each other.
Cross members 46, 46 made of a pipe material are passed between d.
【0022】ミドルメンバ50は、図3に示したよう
に、メインフレーム30の中間部から下方に垂下するよ
うに設けられるものである。実施例では、他のフレーム
メンバとの関係から、ミドルメンバとして記述するが、
請求項1にいうところのサブフレームメンバである。以
下にミドルメンバとして説明する。ミドルメンバ50
は、メインメンバ51、及びサブメンバ61からなり、
これ等は、鋼板素材のプレス加工で得る。As shown in FIG. 3, the middle member 50 is provided so as to hang downward from an intermediate portion of the main frame 30. In the embodiment, it is described as a middle member from the relationship with other frame members.
The sub-frame member according to claim 1. A description will be given below as a middle member. Middle member 50
Consists of a main member 51 and a sub member 61,
These are obtained by pressing a steel plate material.
【0023】メインメンバ51は、平面視(断面視)が
凹状(コ字形)で後方への深さが大きく、上下に長さが
長く、左右の側壁部51b,51b、後壁部51aを備
え、後壁部51aの上部を切り欠いて二股部51c,5
1cを備える。二股部51c,51cは、溶接面積を稼
ぐように若干前後方向に長く形成されており、側壁部5
1b,51bの下部51d,51dは、上下にある程度
の高さを有するように、略逆L字形に前方に膨出する。
ミドルメンバ50のメインメンバ51は、前後に長い二
股部51c,51cをメインフレーム30のロアメンバ
32両側の側壁部32bの外側から当てがい、図3の溶
接箇所sで示すように、二股部51cと側壁部32bと
をスポット溶接する。これにより、図3に示すように、
サブフレームメンバであるミドルメンバ50のメインメ
ンバ51をメインフレーム30のロアメンバ32に吊り
下げるように接合、一体化する。The main member 51 is concave (U-shaped) in plan view (cross-sectional view), has a large depth in the rear, is long vertically, and has left and right side walls 51b, 51b and a rear wall 51a. The upper portion of the rear wall portion 51a is cut out to form a forked portion 51c, 5.
1c. The forked portions 51c, 51c are formed slightly longer in the front-rear direction so as to increase the welding area.
Lower portions 51d, 51d of 1b, 51b swell forward in a substantially inverted L-shape so as to have a certain height vertically.
The main member 51 of the middle member 50 applies bifurcated portions 51c, 51c long from front to back from outside the side wall portions 32b on both sides of the lower member 32 of the main frame 30. Spot welding is performed on the side wall 32b. Thereby, as shown in FIG.
The main member 51 of the middle member 50 which is a sub-frame member is joined and integrated so as to be suspended from the lower member 32 of the main frame 30.
【0024】メインメンバ51の各側壁部51bの各下
部51dの上方部には、凹状断面形状に沿って断面視が
凹状(コ字形)の補強用ガセット52を内張りするよう
に溶接して一体化する。この部分の両側部に、前記した
スイングアーム4の前端部のピボットを、回動自在に支
持する支持管54を、貫通して取り付ける取付孔53を
形成する。又メインメンバ51の各側壁部51bの各下
部51dには、前部の上部にエンジン9の取付用の取付
孔55を左右対称的に設け、各下部51dの後部には、
スタンド取付用のクロスメンバ57を取り付ける取付孔
56を夫々設ける。又各側壁部51bの前記した取付孔
53の上方の部分を夫々前方に突出させ、この各突出部
51eには、左右で対称的にエンジン9の取付用の取付
孔58を設ける。A reinforcing gusset 52 whose cross section is concave (U-shaped) is welded to the upper part of each lower part 51d of each side wall part 51b of the main member 51 so as to line the concave cross section. I do. At both sides of this portion, mounting holes 53 are formed through which a support tube 54 for rotatably supporting the pivot at the front end of the swing arm 4 is inserted. At the lower part 51d of each side wall part 51b of the main member 51, a mounting hole 55 for mounting the engine 9 is provided symmetrically at the upper part of the front part, and at the rear part of each lower part 51d,
Mounting holes 56 for mounting stand mounting cross members 57 are provided. The upper portions of the mounting holes 53 of the side wall portions 51b are respectively protruded forward, and mounting holes 58 for mounting the engine 9 are provided symmetrically on the left and right sides of the respective protruding portions 51e.
【0025】更に、各側壁部51bの下部51dの前部
には、前方への突出部51fを一体に前方に突出するよ
うに設け、この部分にエンジン取付、支持用の取付孔5
5を夫々設ける。これにより、各側壁部51bの下半部
の上下に、エンジン取付孔58,55が形成されること
となる。Further, at the front of the lower portion 51d of each side wall portion 51b, a forwardly projecting portion 51f is provided so as to integrally project forward, and a mounting hole 5 for engine mounting and support is provided in this portion.
5 are provided respectively. As a result, engine mounting holes 58 and 55 are formed above and below the lower half of each side wall 51b.
【0026】サブメンバ61は、断面視が凹状(コ字
形)で、高さ方向の長さにおいて、前記したメインメン
バ51の取付孔53の上方から二股部51c間の長さを
有する。メインメインメンバ51の深さに対し、サブメ
ンバ61のコ字形断面の深さは浅い。後壁部61aの両
側部から前方に折曲した側壁部61b,61bは、後壁
部61aからの突出量が小さく、上部61cは前方に屈
曲して曲り、天井部を構成し、前記したロアメンバ32
の底面32dの下面に突き当てる。又後壁部61aの下
端部の幅方向中央部には、逆凹状の欠部61dを備え
る。上部61cはロアメンバ32の下面32dにスポッ
ト溶接等で接合する。以上のサブメンバ61は、メイン
メンバ51の前方から嵌め込み、溶接する。The sub-member 61 is concave (U-shaped) in cross section and has a length in the height direction between the forked portion 51c from above the mounting hole 53 of the main member 51 described above. The depth of the U-shaped cross section of the sub member 61 is smaller than the depth of the main member 51. The side wall portions 61b, 61b bent forward from both sides of the rear wall portion 61a have a small amount of protrusion from the rear wall portion 61a, and the upper portion 61c bends forward and bends to form a ceiling portion. 32
To the lower surface of the bottom surface 32d. In addition, an indentation 61d having an inverted concave shape is provided at the center in the width direction at the lower end of the rear wall 61a. The upper portion 61c is joined to the lower surface 32d of the lower member 32 by spot welding or the like. The above sub-member 61 is fitted and welded from the front of the main member 51.
【0027】70はリヤメンバで、図3で示すようにメ
インフレーム30の後部とミドルメンバー50の下部と
を繋ぐものである。リヤメンバ70は、メインメンバ7
1とサブメンバ74とで構成し、これ等は鋼板素材のプ
レス加工で得る。メインメンバ71は側面視「弓」形を
なし、断面形状は深さが大きい凹状で、後壁部71a、
左右の側壁部71bからなり、各側壁部71bの各中間
部には、左右のサイドカウル15の取付ボス部72を一
体に設け、この部分に取付孔72aを備え、又これの下
方にサイドカウル取付孔72bを備える。A rear member 70 connects the rear part of the main frame 30 and the lower part of the middle member 50 as shown in FIG. The rear member 70 includes the main member 7
1 and a sub-member 74, which are obtained by pressing a steel plate material. The main member 71 has a “bow” shape in a side view, and the cross-sectional shape is a concave shape having a large depth, and a rear wall portion 71a,
At the middle of each side wall 71b, a mounting boss 72 of the left and right side cowl 15 is provided integrally, and a mounting hole 72a is provided in this portion. A mounting hole 72b is provided.
【0028】メインメンバ71の前方に突出した各側壁
部71bの各下部71cには、左右で対称的な前方に開
く凹状の二股部73を夫々設ける。この二股部73は、
ミドルメンバ50の、前記した支持管54の両側突出部
を挟むようにしてミドルメンバ50のメインメンバ51
のこの部分の側壁部51bに溶接する。サブメンバ74
は、後壁部74a、及びこれの両側部から前方に折曲し
た左右の側壁部74bを有し、断面形状が凹状である。
凹状の深さが、メインメンバ71よりも小さく、且つ図
3に示すように、二股部73の上方からサイドカウル1
5の取付ボス部72の間の長さを有する。サブメンバ7
4を、メインメンバ71の二股部73の上方からサイド
カウル15の取付ボス部72の間の側壁部71b間に嵌
め込み、側壁部71b、74bを溶接し、双方を一体化
する。これにより、リヤメンバ70のこの部分は閉断面
構造となり、剛性、強度を高めた。The lower part 71c of each side wall part 71b protruding forward of the main member 71 is provided with a bifurcated part 73 which is symmetrical in the left and right and opens forward. This forked part 73 is
The main member 51 of the middle member 50 is sandwiched between the projections on both sides of the support tube 54 of the middle member 50.
Is welded to the side wall 51b of this portion. Sub-member 74
Has a rear wall portion 74a and left and right side wall portions 74b bent forward from both side portions thereof, and has a concave cross-sectional shape.
The concave depth is smaller than that of the main member 71 and, as shown in FIG.
5 between the mounting bosses 72. Sub-member 7
4 is fitted between the side wall portions 71b between the mounting boss portions 72 of the side cowl 15 from above the forked portion 73 of the main member 71, and the side wall portions 71b and 74b are welded to integrate them. As a result, this portion of the rear member 70 has a closed cross-sectional structure, and has increased rigidity and strength.
【0029】次に、図6〜図9でメインフレーム30と
フロントメンバ40、ミドルメンバ50、及びリヤメン
バ70の接合構造を説明する。図6は図3の6−6線拡
大断面図である。アッパメンバ31とロアメンバ32と
は、対向するフランジ部31c,32cを上下に重ね合
わせ、例えばスポット溶接等で所定の部位を溶接し、一
体的に接合し、閉断面構造の中空なメインフレーム30
を形成する。溶接部をaで示した。前記した左右のフロ
ントメンバ40は、左右のメンバ41,41の板状部4
1a,41a上縁部の上壁片41f,41fを、上記し
たメインフレーム30のロアメンバ32の左右の側壁部
32b,32bに外側から当て、スポット溶接等で接合
する。Next, the joining structure of the main frame 30, the front member 40, the middle member 50, and the rear member 70 will be described with reference to FIGS. FIG. 6 is an enlarged sectional view taken along line 6-6 of FIG. The upper member 31 and the lower member 32 overlap the opposing flange portions 31c, 32c vertically, and are welded to a predetermined portion by, for example, spot welding or the like, and are integrally joined to form a hollow main frame 30 having a closed cross-sectional structure.
To form The weld is indicated by a. The left and right front members 40 are the plate-like portions 4 of the left and right members 41, 41.
The upper wall pieces 41f, 41f of the upper edge portions 1a, 41a are applied to the left and right side walls 32b, 32b of the lower member 32 of the main frame 30 from outside, and are joined by spot welding or the like.
【0030】前記した膨出円形部42,42に設けた取
付孔42a,42a間に、パイプ状取付スティ43を貫
通し、このスティ43と各取付孔42a,42a周辺部
とをミグ溶接等で接合し、取付スティ43を一体的に架
設する。溶接箇所をbで示した。板状部41a,41a
の前端部は、ヘッドパイプ22の外周部にミグ溶接等で
接合する。又板状部41a,41aの下壁部41b,4
1bの端部相互を突合せ、これの下面にガセット47を
当てがい、このガセット47と下壁部41b,41bの
外端部とをミグ溶接等で接合し、溶接部をcで示した。
ガセット47の前端部は、ヘッドパイプ22の下部後半
部周にミグ溶接等で接合する。A pipe-shaped mounting stay 43 penetrates between the mounting holes 42a provided in the bulging circular portions 42, 42, and the stay 43 and peripheral portions of the mounting holes 42a, 42a are formed by MIG welding or the like. It is joined and the mounting stay 43 is integrally installed. The weld location is indicated by b. Plate portions 41a, 41a
Is joined to the outer peripheral portion of the head pipe 22 by MIG welding or the like. Also, the lower wall portions 41b, 4 of the plate portions 41a, 41a
The ends of 1b were butted against each other, and a gusset 47 was applied to the lower surface thereof. The gusset 47 and the outer ends of the lower walls 41b, 41b were joined by MIG welding or the like, and the welded portion was indicated by c.
The front end of the gusset 47 is joined to the periphery of the lower rear half of the head pipe 22 by MIG welding or the like.
【0031】ところで、アッパメンバ31の両側に突出
したフランジ部31c,31cであるが、ロアメンバ3
2のフランジ部32c,32cよりも外側方への突出量
を大きくし、その各先端部を下方に折曲し、この部分の
断面を略逆L字形の折曲部31hとする。これにより、
下部のロアメンバ32のフランジ部32c,32cの外
端部は隠され、且つ、折曲部31hにより剛性が高くな
り、アッパメンバ31、従ってこれと一体的に接合する
ロアメンバ32を含むメインフレーム30全体の剛性、
強度を高めることができる。The flanges 31c, 31c protruding from both sides of the upper member 31,
The protrusions of the second flange portions 32c, 32c are made larger outward than the second flange portions 32c, and the respective tips are bent downward, so that the cross section of this portion is formed into a substantially inverted L-shaped bent portion 31h. This allows
The outer ends of the flange portions 32c, 32c of the lower member 32 at the lower portion are hidden, and the rigidity is increased by the bent portion 31h, and the entire main frame 30 including the upper member 31 and, therefore, the lower member 32 integrally joined therewith. rigidity,
Strength can be increased.
【0032】図7は図3の7−7線拡大断面図である。
前記したようにアッパメンバ31とロアメンバ32とは
フランジ部31c,32cで溶接されており、ロアメン
バ32の側壁部32bの一方に、前述のエンジン補機類
の取付スティ38を、スポット溶接等で接合する。溶接
箇所をdで示した。取付スティ38は前後の取付片38
aを含んで断面形状が略々Z字形をなし、上部の取付片
38aをロアメンバ32の側壁部32bの一方に溶接
し、ロアメンバ32の下方に垂下した本体部38bに
は、補機類取付用のウエルドナット38cを備える。FIG. 7 is an enlarged sectional view taken along line 7-7 of FIG.
As described above, the upper member 31 and the lower member 32 are welded by the flange portions 31c, 32c, and the mounting stay 38 of the above-described engine accessory is joined to one of the side wall portions 32b of the lower member 32 by spot welding or the like. . The weld location is indicated by d. The mounting stays 38 are front and rear mounting pieces 38.
a, the upper mounting piece 38a is welded to one of the side wall portions 32b of the lower member 32, and a main body portion 38b hanging down below the lower member 32 is used for attaching auxiliary equipment. Is provided.
【0033】図8は図3の8−8線拡大断面図である。
この部分はリヤクッションユニットの支持部材である軸
状のクロスメンバ35の取付部である。メインフレーム
30のこの部分の幅は、前述したように前部に対して幅
広であり、アッパメンバ31、ロアメンバ32のフラン
ジ部のこの部分を対称的に弧状の凹部31g,32gと
し、凹部31g,32g間でクロスメンバ35の両端部
を挟み込み、端部周縁とクロスメンバ35との間をミグ
溶接等し、溶接箇所をeで示した。これにより、アッパ
メンバ31、ロアメンバ32のこの部分間にクロスメン
バ35が横架するように架設されて一体に介在し、メイ
ンフレーム30のこの部分の剛性、強度を高めることが
できる。クロスメンバ35の両端部35a,35aは小
径で、この部分に左右のリヤクッションユニット6,6
の上端の取付ボス部6aを各取付、支持する。FIG. 8 is an enlarged sectional view taken along line 8-8 in FIG.
This portion is a mounting portion of a shaft-shaped cross member 35 which is a support member of the rear cushion unit. The width of this portion of the main frame 30 is wider than the front portion as described above, and this portion of the flange portion of the upper member 31 and the lower member 32 is symmetrically formed into arc-shaped concave portions 31g, 32g, and the concave portions 31g, 32g. Both ends of the cross member 35 are sandwiched between them, and MIG welding or the like is performed between the peripheral edge of the cross member 35 and the cross member 35, and a welded portion is indicated by e. As a result, the cross member 35 is erected so as to extend laterally between the upper member 31 and the lower member 32, and integrally interposed therebetween, so that the rigidity and strength of the main frame 30 can be increased. Both ends 35a, 35a of the cross member 35 have a small diameter, and the left and right rear cushion units 6, 6
The mounting boss 6a at the upper end of each is mounted and supported.
【0034】ロアメンバ31の下側には、この部分から
後方にかけて、前記したリヤメンバ70のメインメンバ
71後部が接合されておいる。具体的は、メインメンバ
71の後部の後壁部71aがロアメンバ31の下面31
dの下方に若干隙間をもって位置し、メインメンバ71
の左右の側壁部71b,71bがロアメンバ32の側壁
部32b,32bの外側から重なり、側壁部71b,3
2b相互をスポット溶接等で接合し、リヤメンバ70の
メインメンバ71の後部をメインフレーム30に接合、
一体化した。溶接箇所をfで示した。The lower part of the lower member 31 is joined to the rear part of the main member 71 of the rear member 70 from this part to the rear. Specifically, the rear wall 71 a of the rear part of the main member 71 is attached to the lower surface 31 of the lower member 31.
d with a slight gap below the main member 71.
Left and right side walls 71b, 71b overlap from the outside of the side walls 32b, 32b of the lower member 32, and the side walls 71b, 3b
2b are joined by spot welding or the like, and the rear part of the main member 71 of the rear member 70 is joined to the main frame 30,
Integrated. The welding location is indicated by f.
【0035】図9は図3の9−9線拡大断面図である。
メインフレーム30のアッパメンバ31のこの部分の上
面31dには、前記したように左右2個の凹状のリブ3
7,37が前後方向に形成されておいる。ロアメンバ3
2の後部の左右の側壁部32b,32bの外側部には、
前記したシート取付スティ81,81が溶接されてお
り、取付スティ81,81は左右分割構造で、鋼板素材
のプレス加工で得る。このスティ81,81は断面形状
が略々Z字形類似の形状で、左右の単体81A,81B
で上下方向の長さが異なる。このスティ81,81は、
上部81a,81aをロアメンバ32の左右の側壁部3
2b,32bの後部外側に配置し、スポット溶接等で接
合し、溶接箇所をgで示した。FIG. 9 is an enlarged sectional view taken along line 9-9 of FIG.
On the upper surface 31d of this portion of the upper member 31 of the main frame 30, the two left and right concave ribs 3 are provided as described above.
7, 37 are formed in the front-back direction. Lower member 3
2 on the left and right side walls 32b, 32b,
The above-mentioned sheet mounting stays 81, 81 are welded, and the mounting stays 81, 81 have a left-right divided structure and are obtained by pressing a steel plate material. The stays 81, 81 have a cross-sectional shape substantially similar to a Z-shape, and include left and right single bodies 81A, 81B.
The vertical length is different. The stays 81, 81
The upper portions 81a, 81a are connected to the left and right side wall portions 3 of the lower member 32.
2b and 32b were arranged on the rear outer side and joined by spot welding or the like, and the welding location was indicated by g.
【0036】図10は図3の矢視10方向から見た拡大
図である。ガセット47の正面視の形状は図10に示す
通りで、フロントメンバ40の左右のメンバ41,41
に設けた前記膨出円形部42,42の取付孔42a,4
2aに前記した燃料タンク前部の取付スティ43を左右
に貫通させ、接合部をミグ溶接等で接合し、接合箇所を
bで示し、スティ43の両端部43a,43aはフロン
トメンバ40の左右に突出する。又ガセット47の後端
部部の溶接箇所は、前記したようにcである。FIG. 10 is an enlarged view as viewed from the direction of arrow 10 in FIG. The shape of the gusset 47 in a front view is as shown in FIG.
Mounting holes 42a, 4 of the bulging circular portions 42, 42
2a, the mounting stay 43 at the front of the fuel tank is penetrated to the left and right, and the joint is joined by MIG welding or the like, and the joint is indicated by b. Protrude. Also, the welding location at the rear end of the gusset 47 is c as described above.
【0037】左右のメンバ41,41の各下壁片41
b,41bは、その下半部の対向する端部相互を突合
せ、突き合せ部をミグ溶接等で接合する。溶接箇所をh
で示した。この部分は、前方に前輪2が位置し、前輪2
のクッション動に起因する上下動に際し、前方への溶接
による張り出し部が生じないように配慮し、前輪のクッ
ションストロークを確保するように構成した。又各下壁
片41b,41bの上部に設けた凸片41c,41c
は、前後に重ね合せ、スポット溶接等で接合し、溶接箇
所をiで示した。この手法においても、溶接部分は前方
に突出することが無く、上記と同様に前輪のクッション
ストロークを確保するように構成した。Each lower wall piece 41 of the left and right members 41, 41
b, 41b, butts the opposing ends of the lower half thereof, and joins the butted portions by MIG welding or the like. H
Indicated by In this part, the front wheel 2 is located in front,
In the case of vertical movement caused by the cushioning movement, it was configured so as not to generate an overhang due to welding forward, and to secure a cushion stroke of the front wheels. Also, convex pieces 41c, 41c provided on the upper portions of the lower wall pieces 41b, 41b.
Is overlapped before and after, joined by spot welding or the like, and the welding location is indicated by i. Also in this method, the welded portion does not protrude forward, and the cushion stroke of the front wheel is secured in the same manner as described above.
【0038】図11は図3の11−11線拡大断面図で
ある。この部分は、フロントメンバ40の下部を示して
おり、フロントメンバ40の前側となる左右のメンバ4
1,41の各下壁片41b,41bは、実際には図のよ
うにこの部分を前後に重ね合わせ、重ね合わせた外側端
縁部を溶接hする。後部となる後壁片41e,41e相
互は、フランジ状なので左右に重ね合せ、スポット溶接
等で接合し、接合箇所をkで示した。又この部分には、
取付孔を介して、前記した上下2本のパイプ状のクロス
メンバ46を左右に貫通し、取付孔外周辺部とクロスメ
ンバ46とをミグ溶接等で接合し、接合箇所をjで示し
た。FIG. 11 is an enlarged sectional view taken along line 11-11 of FIG. This portion shows the lower part of the front member 40, and the left and right members 4 which are the front side of the front member 40 are shown.
Actually, the lower wall pieces 41b, 41b of the first and the first 41 are overlapped with each other back and forth as shown in the drawing, and the overlapped outer edges are welded. Since the rear wall pieces 41e, 41e, which are rear portions, are flange-shaped, they are superimposed on the left and right and joined by spot welding or the like, and the joint is indicated by k. Also in this part,
The upper and lower two pipe-shaped cross members 46 penetrated to the left and right through the mounting holes, and the outer peripheral portion of the mounting holes and the cross member 46 were joined by MIG welding or the like, and the joints were indicated by j.
【0039】クロスメンバ46,46は、図3に鎖線で
示したエンジン前部ハンガー82の前部をボルト83で
結合し、このエンジンハンガー82の後部をエンジン9
のクランクケースの前部にボルト結合し、エンジン9を
フロントメンバ40に取付、支持する。この際、フロン
トメンバ40は、左右のプレス加工板材の断面形状凹状
の溶接、接合構造体であり、全体として閉断面構造なの
で、剛性が高く、重量物であるエンジン前部の支持を強
固、確実に行うことができる。又左右のメンバ41,4
1を突合せて溶接し、クロスメンバ46,46を通して
溶接する構造なので、構造が簡素で、製作も容易であ
る。The cross members 46, 46 are connected with bolts 83 at the front of an engine front hanger 82 shown by chain lines in FIG.
To the front part of the crankcase, and attaches and supports the engine 9 to the front member 40. At this time, the front member 40 is a welded / joined structure having a concave cross-sectional shape of the left and right pressed plate materials, and has a closed cross-sectional structure as a whole. Can be done. The left and right members 41, 4
1 is butt-welded and welded through the cross members 46, 46, so the structure is simple and easy to manufacture.
【0040】図12は図3の12−12線拡大断面図で
ある。ミドルメンバ50のメインメンバ51は、後壁部
51a、左右に側壁部51b,51bを備え、前記した
ように鋼板素材のプレス加工で形成し、図のように奥行
が深い。これの内側にサブメンバ61を配置し、サブメ
ンバ61は同様に後壁部61a、左右の側壁部61b,
61bを備えて同様に鋼板素材のプレス加工で形成し、
奥行は浅い。メインメンバ51の内側にサブメンバ61
を嵌め込み、サブメンバ61の後壁部61aとメインメ
ンバ51aとの間に、前後方向に空間を設け、左右(内
外)に重なった側壁部61b,51b相互をスポット溶
接等で接合し、溶接箇所をmで示した。FIG. 12 is an enlarged sectional view taken along line 12-12 of FIG. The main member 51 of the middle member 50 has a rear wall portion 51a, left and right side wall portions 51b, 51b, and is formed by pressing a steel plate material as described above, and has a deep depth as shown in the figure. A sub-member 61 is arranged inside the sub-member 61, and the sub-member 61 is similarly provided with a rear wall portion 61a, left and right side wall portions 61b,
61b and similarly formed by pressing steel plate material,
The depth is shallow. Sub-member 61 inside main member 51
And a space is provided in the front-rear direction between the rear wall portion 61a of the sub-member 61 and the main member 51a, and the side wall portions 61b, 51b overlapping left and right (inside and outside) are joined to each other by spot welding or the like. Indicated by m.
【0041】ミドルメンバ50は、上記により閉断面構
造体となる。しかも凹状(コ字形)構造物を嵌め込んで
左右の部分を溶接したので、高い剛性が得られ、エンジ
ン9の後部ハンガー、及びスイングアーム4の支持構造
体として必要、且つ十分の剛性、強度を確保することが
できる。以上で形成したミドルメンバ50のメインメン
バ51の側壁部51b,51bに形成した前記の突出部
51e間に、エンジン9の後部のミッションケース10
の上部10bを挟み込み、取付孔58,58にボルト8
4を通し、ミッションケース10のこの部分10bを取
付、支持する。図では示していないが、ミッションケー
ス10の下部も、同様に突出部51f間に挟み込まれ、
同様にボルトで側壁部51d,51bの下部51d間に
取付、支持される。The middle member 50 has a closed sectional structure as described above. In addition, since the left and right portions are welded by fitting the concave (U-shaped) structure, high rigidity is obtained, and sufficient rigidity and strength are required as the rear hanger of the engine 9 and the support structure of the swing arm 4. Can be secured. The transmission case 10 at the rear of the engine 9 is located between the protrusions 51e formed on the side walls 51b of the main member 51 of the middle member 50 formed above.
The upper part 10b of the bolt, and insert the bolt 8 into the mounting holes 58, 58.
4, and attaches and supports this portion 10b of the transmission case 10. Although not shown in the drawing, the lower portion of the transmission case 10 is similarly sandwiched between the protruding portions 51f,
Similarly, it is attached and supported between the lower portions 51d of the side wall portions 51d, 51b by bolts.
【0042】図13は図3の矢視13方向から見た拡大
図である。ミドルメンバ50のメインメンバ51の支持
管54の取付部の後面から、リヤメンバ70のメインメ
ンバ71の左右の二股部73を、支持管54を二股部で
挟むように差込む。左右の二股部73の上下の部分73
a,73aを上述のメインメンバ51のこの部分の側壁
部51b,51bに重ね合せ、スポット溶接等で溶接
し、溶接箇所を図3のnで示した。支持管54の両端部
54a,54aは、側壁部51d,51dの二股部7
3,73の部分から外側方に突出し、スイングアーム4
の前端部を回動可能に支持する。従って、ミドルメンバ
50のエンジン取付、支持部周辺部において、支持管5
4が横架されたことで、この部分の剛性、強度も高めら
れる。FIG. 13 is an enlarged view as seen from the direction of arrow 13 in FIG. The right and left forked portions 73 of the main member 71 of the rear member 70 are inserted from the rear surface of the attachment portion of the support member 54 of the main member 51 of the middle member 50 so as to sandwich the support tube 54 between the forked portions. Upper and lower parts 73 of left and right forked parts 73
a, 73a are superimposed on the side wall portions 51b, 51b of this portion of the main member 51, and are welded by spot welding or the like, and the welding locations are indicated by n in FIG. Both ends 54a, 54a of the support tube 54 are forked portions 7 of the side walls 51d, 51d.
3 and 73, projecting outward from the swing arm 4
Is rotatably supported. Therefore, the support pipe 5 is provided around the middle member 50 for mounting the engine and the support portion.
The rigidity and strength of this part are also increased by the fact that 4 is suspended.
【0043】又支持管54を設置した部分のメインメン
バ51の後壁部51a、左右の側壁部51b,51bに
は、重なり合うように断面凹状の補強用ガセット52を
当てがって溶接し、スイングアーム支持部分を補強し
た。リヤメンバ70のメインメンバ71の後壁部71a
下端部には延出片71dを設け、これをスポット溶接等
でメインメンバ51の後壁部51a下部に接合し、溶接
箇所をpで示した。又メインメンバ51の下部51dの
には、前記したスタンド取付用のクロスメンバ57が取
付孔56を介して左右に貫通するように設置され、下部
51dとクロスメンバ57とはミグ溶接等で接合し、溶
接箇所をqで示した。これ等のク支持管54、スタンド
取付用クロスメンバ57は、何れもメインメンバの下方
部、下部間に横架されており、サブメンバ61がこの部
分には配置されていないが、これ等の部材が補強梁とし
ても機能し、エンジン取付、支持部周辺部の剛性、強度
を高める。Further, a reinforcing gusset 52 having a concave cross section is applied to the rear wall portion 51a and the left and right side wall portions 51b and 51b of the main member 51 where the support tube 54 is installed, and welded by overlapping. The arm support was reinforced. Rear wall 71a of main member 71 of rear member 70
An extension piece 71d is provided at the lower end, and this is joined to the lower portion of the rear wall 51a of the main member 51 by spot welding or the like, and the welded portion is indicated by p. The lower member 51d of the main member 51 is provided with the cross member 57 for mounting the stand so as to penetrate left and right through the mounting hole 56. The lower member 51d and the cross member 57 are joined by MIG welding or the like. , The welding location is indicated by q. These support tube 54 and stand mounting cross member 57 are both laterally suspended between the lower part and the lower part of the main member, and the sub member 61 is not disposed in this part. Also functions as a reinforcing beam, increasing the rigidity and strength of the engine mounting and the periphery of the support.
【0044】図14は図3の矢視14方向から見た拡大
図である。ミドルメンバ50のサブメンバ61の逆凹状
の切欠部61dの左右の下端部は、支持管54の上面に
突き当て、ミグ溶接等で接合し、溶接箇所をrで示し
た。FIG. 14 is an enlarged view as seen from the direction of arrow 14 in FIG. The left and right lower ends of the inverted concave notch 61d of the sub-member 61 of the middle member 50 abut against the upper surface of the support pipe 54 and are joined by MIG welding or the like, and the welded portion is indicated by r.
【0045】以上、実施例を詳述したが、溶接手法は前
記したスポット溶接、ミグ溶接に限られることはなく、
抵抗溶接としてはシーム溶接、レーザ溶接等任意の溶接
手法を用いてフレームを接合することができ、実施例の
溶接手法に限られるものではない。又フレーム構成部材
を、鋼板素材のプレス加工として説明したが、アルミニ
ウムの板材をプレス加工して構成部材を形成しても良
く、構成部材の素材は、溶接可能であり、剛性が得られ
ることを条件として、使用可能な金属板材のプレス加工
素材を用いることができる。Although the embodiment has been described in detail, the welding technique is not limited to the spot welding and the MIG welding described above.
The frame can be joined using any welding technique such as seam welding or laser welding as the resistance welding, and is not limited to the welding technique of the embodiment. Although the frame component is described as pressing a steel plate material, the component member may be formed by pressing an aluminum plate material, and the material of the component member is weldable and rigid. As a condition, a pressed metal plate material that can be used can be used.
【0046】[0046]
【発明の効果】本発明は上記構成により次の効果を発揮
する。請求項1は、ヘッドパイプから後方に延びるメイ
ンフレームから、該メインフレームの下方に向けて断面
視コ字状の金属板材のプレス成形されたサブフレームメ
ンバを接合して垂下し、サブフレームメンバに、プレス
加工で部品取付部を一体に設けたので、サブフレームメ
ンバに部品取付部を一体に設けることにより、部品取付
部を別部材として製作したり、又これを溶接したり、ネ
ジ止めする等の別部材の接合工程が必要ない。従って、
フレーム、特にサブフレームメンバの構成部品点数の削
減が図れ、又部品の組付、溶接等の工数の削減が図れ、
更に別部品を必要としないことから、フレームの軽量
化、及びコストダウンを図ることができる。According to the present invention, the following effects are exhibited by the above configuration. According to a first aspect of the present invention, a sub-frame member formed by pressing a metal plate having a U-shaped cross section is joined downward from the main frame extending rearward from the head pipe toward the lower side of the main frame, and the sub-frame member is hung down. Since the component mounting portion is integrally provided by press working, the component mounting portion is integrally provided on the sub-frame member, so that the component mounting portion can be manufactured as a separate member, or can be welded or screwed. There is no need for a separate member joining step. Therefore,
The number of components of the frame, especially the sub-frame members, can be reduced, and the man-hours for assembling and welding parts can be reduced.
Further, since no separate parts are required, the weight and cost of the frame can be reduced.
【0047】又サブフレームメンバは、断面視コ字形な
ので、メインフレームへの溶接等の接合に際し、メイン
フレームの下半部側部等に溶接すれば良く、溶接等がし
易く、又コ字形なので、メインフレームへの接合部も任
意に設定が可能であり、溶接面積等の接合面積も稼ぎ易
い。従って、高い剛性、強度のメインフレームへのサブ
フレームメンバの接合が、簡素な構造で、作業性良好
に、容易に可能である。Since the sub-frame member has a U-shape in cross section, it can be welded to the lower half side of the main frame when welding or the like to the main frame. Also, the joint to the main frame can be arbitrarily set, and the joint area such as the welding area can be easily obtained. Therefore, the joining of the sub-frame member to the main frame having high rigidity and strength can be easily performed with a simple structure with good workability.
【0048】請求項2は、請求項1において、部品取付
部を、エンジンハンガ部としたので、請求項1の効果に
加えるに、従来のように、メインフレームに設けられる
サブフレームメンバに、別部材として上下のエンジンハ
ンガーやブラケット類を溶接等する必要がない。従っ
て、サブフレーム、延いては自動二輪車のフレームの構
造の簡素化、製作の容易化、コストダウン、軽量化が図
れる。According to a second aspect of the present invention, the component mounting portion is an engine hanger portion in the first aspect. Therefore, in addition to the effect of the first aspect, a separate sub-frame member provided on the main frame as in the related art is provided. There is no need to weld upper and lower engine hangers or brackets as members. Therefore, simplification of the structure of the sub-frame, and hence the frame of the motorcycle, simplification of manufacture, cost reduction, and weight reduction can be achieved.
【0049】請求項3は、請求項1において、サブフレ
ームメンバの内側に、断面視コ字状の補強メンバを配置
し、該サブフレームメンバと補強メンバとを接合、一体
化したので、請求項1の効果に加えるに、サブフレーム
メンバと補強メンバの接合部は閉断面構造体となり、エ
ンジン取付、支持部等の部品取付部に高い剛性、強度が
得られる。又コ字形のサブフレームメンバ内にコ字形の
補強メンバを嵌め込んで溶接等して接合することができ
るので、補強メンバのサブフレームメンバ内への嵌め込
み、重ね合わせ部分の溶接で双方を接合することがで
き、製作が容易であり、フレーム構成部材も最少で足
り、高い剛性、強度を有するサブフレームメンバを、製
作容易に、安価に得ることができる。According to a third aspect, in the first aspect, a reinforcing member having a U-shaped cross section is disposed inside the sub-frame member, and the sub-frame member and the reinforcing member are joined and integrated. In addition to the effects of the first aspect, the joint between the sub-frame member and the reinforcing member has a closed-section structure, so that high rigidity and strength can be obtained in a component mounting portion such as an engine mounting and a support portion. Also, since the U-shaped reinforcing member can be fitted into the U-shaped sub-frame member and joined by welding or the like, the reinforcing member can be fitted into the sub-frame member, and the two can be joined by welding the overlapped portion. It is possible to obtain a sub-frame member having high rigidity and strength easily and inexpensively, which is easy to manufacture, requires a minimum number of frame components.
【図1】本発明にかかるフレーム構造を採用した自動二
輪車の一例を示す外観側面図FIG. 1 is an external side view showing an example of a motorcycle employing a frame structure according to the present invention.
【図2】図1の平面図FIG. 2 is a plan view of FIG. 1;
【図3】本発明にかかるフレームの外観側面図FIG. 3 is an external side view of a frame according to the present invention.
【図4】図3の平面図FIG. 4 is a plan view of FIG. 3;
【図5】フレーム構成メンバの分解斜視図FIG. 5 is an exploded perspective view of a frame constituent member.
【図6】図3の6−6線拡大断面図FIG. 6 is an enlarged sectional view taken along line 6-6 in FIG. 3;
【図7】図3の7−7線拡大断面図FIG. 7 is an enlarged sectional view taken along line 7-7 of FIG. 3;
【図8】図3の8−8線拡大断面図FIG. 8 is an enlarged sectional view taken along line 8-8 in FIG. 3;
【図9】図3の9−9線拡大断面図FIG. 9 is an enlarged sectional view taken along line 9-9 of FIG. 3;
【図10】図3の矢視10方向から見た拡大図FIG. 10 is an enlarged view as viewed from a direction indicated by arrows 10 in FIG. 3;
【図11】図3の11−11線拡大断面図FIG. 11 is an enlarged sectional view taken along line 11-11 of FIG. 3;
【図12】図3の12−12線拡大断面図FIG. 12 is an enlarged sectional view taken along line 12-12 of FIG. 3;
【図13】図3の矢視13方向から見た図FIG. 13 is a view as viewed from the direction of arrow 13 in FIG. 3;
【図14】図3の矢視14方向から見た図14 is a view as seen from the direction of arrow 14 in FIG. 3;
1…自動二輪車、 9…エンジン、 22…ヘッドパイ
プ、 30…メインフレーム、 50…サブフレーム、
51e,51f…エンジンハンガ部である部品取付
部、 61…補強メンバ。1 ... motorcycle, 9 ... engine, 22 ... head pipe, 30 ... main frame, 50 ... sub frame,
51e, 51f: a component mounting portion which is an engine hanger portion, 61: a reinforcing member.
Claims (3)
レームから、該メインフレームの下方に向けて断面視コ
字状の金属板材のプレス成形されたサブフレームメンバ
を接合して垂下し、 前記サブフレームメンバに、プレス加工で部品取付部を
一体に設けた、 ことを特徴とする自動二輪車のフレーム構造。1. A sub-frame member formed by pressing a metal plate having a U-shape in cross section from a main frame extending rearward from a head pipe toward a lower portion of the main frame, and hanging down. The frame structure of a motorcycle, wherein a part mounting portion is integrally provided by press working.
あることを特徴とする請求項1に記載の自動二輪車のフ
レーム構造。2. The motorcycle frame structure according to claim 1, wherein said component mounting portion is an engine hanger portion.
視コ字状の補強メンバを配置し、該サブフレームメンバ
と補強メンバとを接合、一体化したことを特徴とする請
求項1に記載の自動二輪車のフレーム構造。3. The sub-frame member according to claim 1, wherein a reinforcing member having a U-shaped cross section is disposed inside the sub-frame member, and the sub-frame member and the reinforcing member are joined and integrated. Motorcycle frame structure.
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP27235298A JP4153105B2 (en) | 1998-09-25 | 1998-09-25 | Motorcycle frame structure |
BR9904351A BR9904351A (en) | 1998-09-25 | 1999-09-23 | Frame structure for motorcycle. |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP27235298A JP4153105B2 (en) | 1998-09-25 | 1998-09-25 | Motorcycle frame structure |
Publications (2)
Publication Number | Publication Date |
---|---|
JP2000095171A true JP2000095171A (en) | 2000-04-04 |
JP4153105B2 JP4153105B2 (en) | 2008-09-17 |
Family
ID=17512690
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP27235298A Expired - Fee Related JP4153105B2 (en) | 1998-09-25 | 1998-09-25 | Motorcycle frame structure |
Country Status (2)
Country | Link |
---|---|
JP (1) | JP4153105B2 (en) |
BR (1) | BR9904351A (en) |
Cited By (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2006109482A1 (en) * | 2005-03-31 | 2006-10-19 | Honda Motor Co., Ltd. | Body frame for motorcycle |
CN102233923A (en) * | 2010-04-26 | 2011-11-09 | 本田技研工业株式会社 | Frame for motor-driven two wheel motorcycle and manufacturing method for the same |
JP2012183984A (en) * | 2011-03-08 | 2012-09-27 | Honda Motor Co Ltd | Vehicle body frame of motorcycle |
JP2012187940A (en) * | 2011-03-08 | 2012-10-04 | Honda Motor Co Ltd | Vehicle body frame of motorcycle |
JP2015189385A (en) * | 2014-03-28 | 2015-11-02 | 本田技研工業株式会社 | Vehicle body frame of saddle-riding type vehicle |
JP2015189372A (en) * | 2014-03-28 | 2015-11-02 | 本田技研工業株式会社 | Vehicle body frame of two-wheeled vehicle |
WO2017056166A1 (en) * | 2015-09-28 | 2017-04-06 | 本田技研工業株式会社 | Vehicle frame structure |
AT526917A1 (en) * | 2022-12-15 | 2024-07-15 | Haager Alexander | Bicycle frame element |
-
1998
- 1998-09-25 JP JP27235298A patent/JP4153105B2/en not_active Expired - Fee Related
-
1999
- 1999-09-23 BR BR9904351A patent/BR9904351A/en not_active IP Right Cessation
Cited By (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2006109482A1 (en) * | 2005-03-31 | 2006-10-19 | Honda Motor Co., Ltd. | Body frame for motorcycle |
CN102233923A (en) * | 2010-04-26 | 2011-11-09 | 本田技研工业株式会社 | Frame for motor-driven two wheel motorcycle and manufacturing method for the same |
JP2012183984A (en) * | 2011-03-08 | 2012-09-27 | Honda Motor Co Ltd | Vehicle body frame of motorcycle |
JP2012187940A (en) * | 2011-03-08 | 2012-10-04 | Honda Motor Co Ltd | Vehicle body frame of motorcycle |
JP2015189385A (en) * | 2014-03-28 | 2015-11-02 | 本田技研工業株式会社 | Vehicle body frame of saddle-riding type vehicle |
JP2015189372A (en) * | 2014-03-28 | 2015-11-02 | 本田技研工業株式会社 | Vehicle body frame of two-wheeled vehicle |
WO2017056166A1 (en) * | 2015-09-28 | 2017-04-06 | 本田技研工業株式会社 | Vehicle frame structure |
CN108137120A (en) * | 2015-09-28 | 2018-06-08 | 本田技研工业株式会社 | The body frame structure for automotive of vehicle |
AT526917A1 (en) * | 2022-12-15 | 2024-07-15 | Haager Alexander | Bicycle frame element |
Also Published As
Publication number | Publication date |
---|---|
BR9904351A (en) | 2000-09-26 |
JP4153105B2 (en) | 2008-09-17 |
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