JP3194288B2 - Motorcycle body frame - Google Patents
Motorcycle body frameInfo
- Publication number
- JP3194288B2 JP3194288B2 JP06717292A JP6717292A JP3194288B2 JP 3194288 B2 JP3194288 B2 JP 3194288B2 JP 06717292 A JP06717292 A JP 06717292A JP 6717292 A JP6717292 A JP 6717292A JP 3194288 B2 JP3194288 B2 JP 3194288B2
- Authority
- JP
- Japan
- Prior art keywords
- body frame
- round pipe
- bridge member
- members
- bridge
- 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.)
- Expired - Fee Related
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62K—CYCLES; CYCLE FRAMES; CYCLE STEERING DEVICES; RIDER-OPERATED TERMINAL CONTROLS SPECIALLY ADAPTED FOR CYCLES; CYCLE AXLE SUSPENSIONS; CYCLE SIDE-CARS, FORECARS, OR THE LIKE
- B62K11/00—Motorcycles, engine-assisted cycles or motor scooters with one or two wheels
- B62K11/02—Frames
- B62K11/04—Frames characterised by the engine being between front and rear wheels
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62K—CYCLES; CYCLE FRAMES; CYCLE STEERING DEVICES; RIDER-OPERATED TERMINAL CONTROLS SPECIALLY ADAPTED FOR CYCLES; CYCLE AXLE SUSPENSIONS; CYCLE SIDE-CARS, FORECARS, OR THE LIKE
- B62K19/00—Cycle frames
- B62K19/02—Cycle frames characterised by material or cross-section of frame members
- B62K19/04—Cycle frames characterised by material or cross-section of frame members the material being wholly or mainly metallic, e.g. of high elasticity
- B62K19/06—Cycle frames characterised by material or cross-section of frame members the material being wholly or mainly metallic, e.g. of high elasticity tubular
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62K—CYCLES; CYCLE FRAMES; CYCLE STEERING DEVICES; RIDER-OPERATED TERMINAL CONTROLS SPECIALLY ADAPTED FOR CYCLES; CYCLE AXLE SUSPENSIONS; CYCLE SIDE-CARS, FORECARS, OR THE LIKE
- B62K19/00—Cycle frames
- B62K19/18—Joints between frame members
- B62K19/20—Joints between frame members welded, soldered, or brazed
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Motorcycle And Bicycle Frame (AREA)
Description
【発明の詳細な説明】DETAILED DESCRIPTION OF THE INVENTION
【０００１】[0001]
【産業上の利用分野】本発明は、自動二輪車の車体フレ
ームに関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a motorcycle body frame.
【０００２】[0002]
【従来の技術】丸パイプ材によって構成された自動二輪
車の車体フレームには、図５（ａ）、（ｂ）に示すよう
に左右両側のパイプ材Ａ，Ａ間にブリッジ部材Ｂを架設
した構造が多く採られている。ブリッジ部材Ｂは、その
両端部の形状をパイプ材Ａ，Ａの曲面に合わせてカット
され、パイプ材Ａ，Ａの径方向全幅にわたってパイプ材
Ａ，Ａに突き当てられ、溶着される。2. Description of the Related Art As shown in FIGS. 5 (a) and 5 (b), a motorcycle body frame formed of a round pipe material has a structure in which a bridge member B is bridged between pipe materials A on both right and left sides. Are often adopted. The bridge member B is cut so that the shape of both ends thereof is in conformity with the curved surfaces of the pipe members A, A, and is abutted against and welded to the pipe members A, A over the entire radial width of the pipe members A, A.
【０００３】上記パイプ材Ａ，Ａは、車体フレームを構
成する左右一対のトップチューブやダウンチューブ、あ
るいはシートレールなどである。[0003] The pipe members A, A are a pair of left and right top tubes, down tubes, or seat rails constituting a vehicle body frame.
【０００４】[0004]
【発明が解決しようとする課題】ところで、自動二輪車
の車体フレームの組み立て手順は、先ず上記した左右一
対のトップチューブ、ダウンチューブ、シートレール等
の片側ずつをそれぞれ溶着してサイドコンプリートと呼
ばれる車体フレームの左右半身を個別に組み立て、次に
左右のサイドコンプリートを治具上で正確に対向させて
その間に数本の前記ブリッジ部材Ｂと、ヘッドパイプ等
の中間部材とを溶着し、左右のサイドコンプリートを一
体化させることによって車体フレームの完成となる。By the way, the assembling procedure of the body frame of the motorcycle is as follows. First, the above-mentioned pair of left and right top tubes, down tubes, seat rails and the like are welded to each side, respectively, and the body frame is called a side complete. The left and right halves are assembled individually, and then the left and right side completes are accurately opposed on a jig, and several bridge members B and an intermediate member such as a head pipe are welded therebetween, thereby completing the left and right side completes. Is completed to complete the body frame.
【０００５】しかしながら、左右のサイドコンプリート
を対向させる治具には、全てのブリッジ部材Ｂをサイド
コンプリート間に仮止めさせる構造が必要となるため、
治具が複雑化かつ大型化して非常にコストが嵩むととも
に、各ブリッジ部材Ｂをそれぞれずれることなく治具に
仮止めするのに多大な手数が掛かってしまう。[0005] However, a jig for opposing the left and right side completes needs a structure for temporarily fixing all the bridge members B between the side completes.
The jig becomes complicated and large-sized, and the cost is extremely increased. In addition, it takes a lot of trouble to temporarily fix the bridge members B to the jig without shifting.
【０００６】このような治具のコストアップを回避し、
ブリッジ部材Ｂの仮止め作業を容易にするためには、全
てのブリッジ部材Ｂを治具上で同時に溶着するのではな
く、何本かのブリッジ部材Ｂを左右のサイドコンプリー
トが一体化した後に後付けするという手法を採るのが効
果的である。In order to avoid such a jig cost increase,
To facilitate the temporary fixing work of the bridge members B, instead of welding all the bridge members B on the jig at the same time, some bridge members B are retrofitted after the left and right side completes are integrated. It is effective to adopt a method of doing so.
【０００７】ところが、ブリッジ部材Ｂの両端部は前述
したようにパイプ材Ａ，Ａの曲面に合わせてカットされ
ているため、左右のサイドコンプリートが一体化してパ
イプ材Ａ，Ａの間隔が固定されてしまうと、ブリッジ部
材Ｂをパイプ材Ａ，Ａ間に仮止めすることができなくな
る。仮に、パイプ材Ａ，Ａとブリッジ部材Ｂとの間隙を
大きくして仮止めを可能とさせても、両部材Ａ，Ｂの溶
着時に上記間隙に肉盛りを施す必要が生じ、溶着作業が
困難になるとともに接合部の強度低下につながる恐れが
ある。However, since both ends of the bridge member B are cut in accordance with the curved surfaces of the pipe members A, A as described above, the left and right side completes are integrated and the interval between the pipe members A, A is fixed. In this case, the bridge member B cannot be temporarily fixed between the pipe members A. Even if the gap between the pipe members A, A and the bridge member B is increased to enable temporary fixing, it is necessary to build up the gap at the time of welding the members A, B, making welding work difficult. And the strength of the joint may be reduced.
【０００８】本発明は、これらの問題点を解決するため
になされたもので、車体フレームを構成する左右一対の
丸パイプ材間に架設されるブリッジ部材を、車体フレー
ムの組み上がり後に後付け可能とさせ、車体フレーム組
立用の治具をコストダウンするとともに、車体フレーム
組立時におけるブリッジ部材の仮止め作業を容易にし、
しかも車体フレームの丸パイプ材にブリッジ部材を高い
強度で接合することのできる自動二輪車の車体フレーム
を提供することを目的とする。SUMMARY OF THE INVENTION The present invention has been made to solve these problems, and a bridge member installed between a pair of left and right round pipe members constituting a body frame can be retrofitted after the body frame is assembled. In addition to reducing the cost of the jig for assembling the body frame, it also facilitates the temporary fixing work of the bridge member when assembling the body frame,
Moreover, it is an object of the present invention to provide a motorcycle body frame in which a bridge member can be joined to a round pipe member of the body frame with high strength.
【０００９】[0009]
【課題を解決するための手段】上記目的を達成するた
め、本発明に係る自動二輪車の車体フレームは、丸パイ
プ材により左右一対のサイドコンプリートを形成し、こ
の左右のサイドコンプリートを対向させてその間を車幅
方向に延びるブリッジ部材で連結してなる自動二輪車の
車体フレームにおいて、各サイドコンプリートを車両側
面視で閉ループ状に形成するとともに、上記ブリッジ部
材の少なくとも両端部を各サイドコンプリートを形成す
る丸パイプ材の長手方向に沿うように偏平化し、この偏
平化されたブリッジ部材の両端部を車両側面視で丸パイ
プ材の軸心線と上記閉ループの外周側の輪郭線との間に
突き当てて溶着し、丸パイプ材の軸方向視でブリッジ部
材の両端部の溶着部を丸パイプ材外周面の略四半円弧面
に沿わせたことを特徴とするものである。In order to achieve the above object, a motorcycle body frame according to the present invention has a pair of left and right side completes formed of a round pipe material, and the left and right side completes are opposed to each other. Are connected by a bridge member extending in the vehicle width direction, a side frame is formed in a closed loop shape in a side view of the vehicle, and at least both ends of the bridge member form a side complete. Flattening along the longitudinal direction of the pipe material, and abutting both ends of the flattened bridge member between the axis of the round pipe material and the contour line on the outer peripheral side of the closed loop in a vehicle side view. It is characterized in that the welded portions at both ends of the bridge member are aligned along the substantially quarter-arc surface of the outer peripheral surface of the round pipe material when viewed in the axial direction of the round pipe material. It is an.
【００１０】[0010]
【作用】このようにすることにより、車体フレームのサ
イドコンプリートを構成する左右一対の丸パイプ材間の
間隔が固定されていてもブリッジ部材を容易に丸パイプ
材間に仮止めすることができるようになり、組み上がっ
た車体フレームにブリッジ部材を後付けできる。しか
も、ブリッジ部材を比較的広い接合面積で丸パイプ材に
接合できるので、高い接合強度が得られる。In this manner, the bridge member can easily be temporarily fixed between the round pipe members even if the distance between the pair of left and right round pipe members constituting the side complete of the vehicle body frame is fixed. The bridge member can be retrofitted to the assembled body frame. In addition, since the bridge member can be joined to the round pipe material with a relatively large joining area, high joining strength can be obtained.
【００１１】[0011]
【実施例】以下、本発明の実施例について図面を参照し
ながら説明する。Embodiments of the present invention will be described below with reference to the drawings.
【００１２】図１は、本発明が適用された自動二輪車の
車体フレーム斜視図である。この車体フレーム１は丸パ
イプ材によって構成された一般的なダブレクレードル型
のものであり、フロントフォークが支持されるヘッドパ
イプ２から後方に延びて下方に湾曲する左右一対のトッ
プチューブ３，３と、同じくヘッドパイプ２から下方へ
延びて後方に湾曲する左右一対のダウンチューブ４，４
と、上記トップチューブ３，３の湾曲部から後方に延び
る左右一対のシートレール５，５と、これら左右一対の
丸パイプ材３，３、４，４、５，５間に架設されるブリ
ッジ部材６，７，８，９，１０，１１などから成り立っ
ている。FIG. 1 is a perspective view of a body frame of a motorcycle to which the present invention is applied. The body frame 1 is of a general double cradle type made of a round pipe material, and a pair of left and right top tubes 3 and 3 extending rearward from a head pipe 2 supporting a front fork and curving downward. And a pair of left and right down tubes 4 and 4 which also extend downward from the head pipe 2 and curve backward.
A pair of left and right seat rails 5, 5 extending rearward from the curved portions of the top tubes 3, 3, and a bridge member bridged between the pair of left and right round pipe members 3, 3, 4, 4, 5, 5 6, 7, 8, 9, 10, 11 and the like.
【００１３】上記トップチューブ３，３の後端部はダウ
ンチューブ４，４上に溶着され、ダウンチューブ４，４
の後端部はシートレール５，５に溶着されてシートレー
ル５，５を下方から支持し、これにより車両側面視で閉
ループ状である左右一対のサイドコンプリートが形成さ
れ、各サイドコンプリートが図示しない治具上で正確に
対向されてその間がブリッジ部材６，７，８，９，１
０，１１により連結されるとともに、ヘッドパイプ２が
固定される。なお、１２，１２は補強部材であり、１
３，１３は後部乗員用ピリオンフットレストの取付ステ
ーである。The rear ends of the top tubes 3 and 3 are welded onto the down tubes 4 and 4, respectively.
The rear end portions are welded to the seat rails 5, 5 to support the seat rails 5, 5 from below, thereby forming a pair of left and right side completes having a closed loop shape in a vehicle side view, and each side complete is not shown. Bridge members 6, 7, 8, 9, 1 are exactly opposed to each other on the jig.
The head pipe 2 is fixed while being connected by 0 and 11. In addition, 12 and 12 are reinforcing members, and 1
Reference numerals 3 and 13 denote attachment stays for rear passenger pillion footrests.
【００１４】図２（ａ），（ｂ）は、本発明の第１実施
例を示しており、（ａ）は前記ブリッジ部材６，７とト
ップチューブ３，３との取着状態を示す側面図、（ｂ）
は（ａ）のＩＩｂ−ＩＩｂ線に沿う断面図である。FIGS. 2 (a) and 2 (b) show a first embodiment of the present invention. FIG. 2 (a) is a side view showing an attached state of the bridge members 6, 7 and the top tubes 3, 3. Figure, (b)
FIG. 2A is a cross-sectional view taken along line IIb-IIb in FIG.
【００１５】ブリッジ部材６，７は、例えば丸パイプ材
を潰して長円形断面を持たせたものであり、その両端部
の長円形断面の長軸がトップチューブ３，３の長手方向
に沿う向きでトップチューブ３，３間に架設され、両端
部が溶着されて固定される。より具体的には、車両側面
視で閉ループ状に構成されたサイドコンプリートの外周
側の輪郭線となるトップチューブ３，３の一辺３ａと軸
心線３ｂとの間にかけてブリッジ部材６，７の両端部が
突き当てられて全周にわたり溶着され、トップチューブ
３，３の軸方向視でブリッジ部材６，７の両端部の溶着
部がトップチューブ３，３の外周面の略四半円弧面に沿
うようにされている。The bridge members 6 and 7 are formed, for example, by crushing a round pipe material so as to have an oval cross section. The major axes of the oval cross sections at both ends are oriented along the longitudinal direction of the top tubes 3 and 3. , And is fixed between the top tubes 3 and 3 by welding at both ends. More specifically, both ends of the bridge members 6 and 7 extend between one side 3a of the top tubes 3 and 3 which are contours on the outer peripheral side of the side complete formed in a closed loop shape in a vehicle side view and the axis 3b. The top tubes 3 and 3 are welded over the entire circumference so that the welded portions at both ends of the bridge members 6 and 7 along the substantially quarter-arc surface of the outer peripheral surface of the top tubes 3 and 3 when viewed in the axial direction of the top tubes 3 and 3. Has been.
【００１６】このようにした場合、ブリッジ部材６，７
は左右のトップチューブ３，３の間隔が固定されていて
も、サイドコンプリートの外周側（一辺３ａ側）からト
ップチューブ３，３間に容易に仮止めすることができる
ため、車体フレーム１が組み上げられてからブリッジ部
材６，７を後付けすることが可能となる。In this case, the bridge members 6, 7
Even if the distance between the left and right top tubes 3, 3 is fixed, the vehicle body frame 1 can be easily temporarily fixed between the top tubes 3, 3 from the outer peripheral side (one side 3a side) of the side complete. After that, the bridge members 6 and 7 can be retrofitted.
【００１７】したがって、車体フレーム１組立用の治具
からブリッジ部材６，７を仮止めする構造を省略するこ
とができ、治具を大幅にコストダウンさせることができ
る。また、車体フレーム１を上記治具にて組み立てる際
に全てのブリッジ部材６，７，８，９，１０，１１を同
時に治具に仮止めする必要がなくなるため、仮止め作業
が容易になる。その上、ブリッジ部材６，７を比較的広
い接合面積でトップチューブ３，３に接合できるので、
高い接合強度が得られる。Therefore, the structure for temporarily fixing the bridge members 6, 7 from the jig for assembling the body frame 1 can be omitted, and the cost of the jig can be greatly reduced. Further, when assembling the body frame 1 with the jig, it is not necessary to temporarily fix all the bridge members 6, 7, 8, 9, 10, 11 to the jig at the same time. In addition, since the bridge members 6, 7 can be joined to the top tubes 3, 3 with a relatively large joining area,
High bonding strength can be obtained.
【００１８】図３（ａ），（ｂ）は本発明の第２実施例
を示すもので、ブリッジ部材６，７は丸パイプ材の両端
部のみを潰した形状とされている。また、図４（ａ），
（ｂ）は本発明の第３実施例で、ブリッジ部材６，７は
角パイプ材とされている。図２〜図４に示すようなブリ
ッジ部材形状を採用することにより、溶着部の直線区間
が長くなるため、ロボットによる自動溶着が行い易くな
り、車体フレーム１の生産性を向上させることができ
る。FIGS. 3 (a) and 3 (b) show a second embodiment of the present invention, in which the bridge members 6, 7 have a shape in which only both ends of a round pipe material are crushed. In addition, FIG.
(B) is a third embodiment of the present invention, in which the bridge members 6, 7 are made of square pipe material. By adopting the bridge member shape as shown in FIG. 2 to FIG. 4, the straight section of the welding portion becomes longer, so that automatic welding by the robot can be easily performed, and the productivity of the body frame 1 can be improved.
【００１９】なお、本発明はブリッジ部材６，７に限ら
ず、他のパイプ状のブリッジ部材８，９，１０に適用し
ても良い。その場合にも、各ブリッジ部材８，９，１０
の少なくとも両端部を、車体フレーム１のサイドコンプ
リートを形成する丸パイプ材（４，５，６）の長手方向
に沿うように偏平化し、この偏平化した部分を車両側面
視で丸パイプ材（４，５，６）の軸心線とサイドコンプ
リートの閉ループ外周側の輪郭線との間に突き当てて溶
着し、丸パイプ材（４，５，６）の軸方向視でブリッジ
部材８，９，１０の両端部の溶着部を丸パイプ材（４，
５，６）の外周面の略四半円弧面に沿わせる必要があ
る。The present invention is not limited to the bridge members 6, 7, but may be applied to other pipe-like bridge members 8, 9, 10. Also in that case, each of the bridge members 8, 9, 10
At least both ends are flattened along the longitudinal direction of the round pipe material (4, 5, 6) forming the side complete of the body frame 1, and the flattened portion is viewed from the side of the vehicle as the round pipe material (4). , 5,6) and welded by abutting between the axial line of the side complete closed loop outer peripheral side and the bridge members 8, 9,, in the axial direction of the round pipe member (4, 5, 6). The welded portions at both ends of 10 are round pipe materials (4,
It is necessary to conform to the substantially quarter-arc surface of the outer peripheral surface of (5, 6).
【００２０】[0020]
【発明の効果】以上説明したように、本発明に係る自動
二輪車の車体フレームは、丸パイプ材により左右一対の
サイドコンプリートを形成し、この左右のサイドコンプ
リートを対向させてその間を車幅方向に延びるブリッジ
部材で連結してなる自動二輪車の車体フレームにおい
て、各サイドコンプリートを車両側面視で閉ループ状に
形成するとともに、上記ブリッジ部材の少なくとも両端
部を各サイドコンプリートを形成する丸パイプ材の長手
方向に沿うように偏平化し、この偏平化されたブリッジ
部材の両端部を車両側面視で丸パイプ材の軸心線と上記
閉ループの外周側の輪郭線との間に突き当てて溶着し、
丸パイプ材の軸方向視でブリッジ部材の両端部の溶着部
を丸パイプ材外周面の略四半円弧面に沿わせたことを特
徴とするものである。As described above, the motorcycle body frame according to the present invention has a pair of left and right side completes formed of a round pipe material, and the left and right side completes are opposed to each other in the vehicle width direction. In a motorcycle body frame connected by an extending bridge member, each side complete is formed in a closed loop shape in a vehicle side view, and at least both ends of the bridge member are formed in a longitudinal direction of a round pipe material forming each side complete. The ends of this flattened bridge member are abutted and welded between the axis of the round pipe material and the contour of the outer periphery of the closed loop in a vehicle side view,
The welded portions at both ends of the bridge member are arranged along substantially a quarter-arc surface of the outer peripheral surface of the round pipe member when viewed in the axial direction of the round pipe member.
【００２１】したがって、左右の丸パイプ材間の間隔が
固定されていてもブリッジ部材を容易に丸パイプ材間に
仮止め可能であり、組み上がった車体フレームにブリッ
ジ部材を後付けすることができる。このため、車体フレ
ーム組立用の治具からブリッジ部材仮止め用の構造を省
くことができ、治具の大幅なコストダウンを実現できる
とともに、車体フレーム組立時におけるブリッジ部材の
仮止め作業が容易となる。しかも、ブリッジ部材を比較
的広い接合面積で丸パイプ材に接合できるので、高い接
合強度が得られる。Therefore, even if the interval between the left and right round pipe members is fixed, the bridge member can be easily temporarily fixed between the round pipe members, and the bridge member can be retrofitted to the assembled body frame. For this reason, the structure for temporarily fixing the bridge member can be omitted from the jig for assembling the body frame, and the cost of the jig can be significantly reduced. Become. In addition, since the bridge member can be joined to the round pipe material with a relatively large joining area, high joining strength can be obtained.
【図１】本発明が適用された自動二輪車の車体フレーム
斜視図。FIG. 1 is a perspective view of a vehicle body frame of a motorcycle to which the present invention is applied.
【図２】本発明の第１実施例を示すもので、（ａ）はブ
リッジ部材とトップチューブとの取着状態を示す側面
図、（ｂ）は（ａ）のＩＩｂ−ＩＩｂ線に沿う断面図。FIGS. 2A and 2B show a first embodiment of the present invention, in which FIG. 2A is a side view showing a state of attachment between a bridge member and a top tube, and FIG. 2B is a cross section taken along line IIb-IIb of FIG. FIG.
【図３】（ａ）は本発明の第２実施例を示す側面図、
（ｂ）は（ａ）のＩＩＩｂ−ＩＩＩｂ線に沿う断面図。FIG. 3 (a) is a side view showing a second embodiment of the present invention,
(B) is sectional drawing which follows the IIIb-IIIb line of (a).
【図４】（ａ）は本発明の第３実施例を示す側面図、
（ｂ）は（ａ）のＩＶｂ−ＩＶｂ線に沿う断面図。FIG. 4A is a side view showing a third embodiment of the present invention,
(B) is sectional drawing which follows the IVb-IVb line of (a).
【図５】（ａ）は従来の技術を示す側面図、（ｂ）は
（ａ）のＶｂ−Ｖｂ線に沿う断面図。5A is a side view showing a conventional technique, and FIG. 5B is a cross-sectional view taken along line Vb-Vb in FIG.
１ 車体フレーム ３ 丸パイプ材であるトップチューブ ３ａ 閉ループの外周側の輪郭線となるトップチューブ
の一辺 ３ｂ トップチューブの軸心線 ４ ダウンチューブ ５ シートレール ６，７ ブリッジ部材 １４ 突き当て部DESCRIPTION OF SYMBOLS 1 Body frame 3 Top tube which is a round pipe material 3a One side of top tube which serves as a contour line of the outer circumference side of a closed loop 3b Center line of top tube 4 Down tube 5 Seat rail 6, 7 Bridge member 14 Butt
Claims (1)
プリートを形成し、この左右のサイドコンプリートを対
向させてその間を車幅方向に延びるブリッジ部材で連結
してなる自動二輪車の車体フレームにおいて、各サイド
コンプリートを車両側面視で閉ループ状に形成するとと
もに、上記ブリッジ部材の少なくとも両端部を各サイド
コンプリートを形成する丸パイプ材の長手方向に沿うよ
うに偏平化し、この偏平化されたブリッジ部材の両端部
を車両側面視で丸パイプ材の軸心線と上記閉ループの外
周側の輪郭線との間に突き当てて溶着し、丸パイプ材の
軸方向視でブリッジ部材の両端部の溶着部を丸パイプ材
外周面の略四半円弧面に沿わせたことを特徴とする自動
二輪車の車体フレーム。In a vehicle body frame of a motorcycle, a pair of left and right side completes is formed by a round pipe material, and the left and right side completes are opposed to each other and connected by a bridge member extending in a vehicle width direction. The complete is formed in a closed loop shape when viewed from the side of the vehicle, and at least both ends of the bridge member are flattened along the longitudinal direction of the round pipe material forming each side complete, and both ends of the flattened bridge member are formed. Between the axis of the round pipe material and the contour line on the outer peripheral side of the closed loop in the side view of the vehicle and welded, and weld the welded portions at both ends of the bridge member in the axial view of the round pipe material to the round pipe. A body frame of a motorcycle, characterized by being formed along a substantially arc-shaped surface of a material outer peripheral surface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP06717292A JP3194288B2 (en) | 1992-03-25 | 1992-03-25 | Motorcycle body frame |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP06717292A JP3194288B2 (en) | 1992-03-25 | 1992-03-25 | Motorcycle body frame |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH05270471A JPH05270471A (en) | 1993-10-19 |
| JP3194288B2 true JP3194288B2 (en) | 2001-07-30 |
Family
ID=13337214
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP06717292A Expired - Fee Related JP3194288B2 (en) | 1992-03-25 | 1992-03-25 | Motorcycle body frame |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3194288B2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7114588B2 (en) | 2003-07-08 | 2006-10-03 | Honda Motor Co., Ltd. | Vehicle body frame structure of two-wheeler |
-
1992
- 1992-03-25 JP JP06717292A patent/JP3194288B2/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7114588B2 (en) | 2003-07-08 | 2006-10-03 | Honda Motor Co., Ltd. | Vehicle body frame structure of two-wheeler |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH05270471A (en) | 1993-10-19 |
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