JPS6181880A - Swing arm for two-wheel barrow - Google Patents
Swing arm for two-wheel barrowInfo
- Publication number
- JPS6181880A JPS6181880A JP13312785A JP13312785A JPS6181880A JP S6181880 A JPS6181880 A JP S6181880A JP 13312785 A JP13312785 A JP 13312785A JP 13312785 A JP13312785 A JP 13312785A JP S6181880 A JPS6181880 A JP S6181880A
- Authority
- JP
- Japan
- Prior art keywords
- swing arm
- light metal
- wheeled vehicle
- rib
- vehicle according
- 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
- Axle Suspensions And Sidecars For Cycles (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〕 本発明は二輪車用スイングアームに関する。[Detailed description of the invention] [Technical field of invention] The present invention relates to a swing arm for a two-wheeled vehicle.
従来の二輪車用スイングアームは、パイプ製あるいはプ
レス製スイングアームであったため型の製作費が非常に
高く、また、二輪車用の機種の変更あるいはりャーショ
ックアブソーバの取付位置の変更のたびに型変更が必要
となり型償却費が割高であった。また、製品としてのス
イングアームを形成するために多数の部品を溶接して組
合せるので、その溶接長さが長く製作工程が面倒で生産
性が悪かった。加えて溶接箇所が多いためその強度のバ
ラツキが生じ安定しないし、また外観も悪かった。ざら
に、二輪車用のスイングアームの断面形状に制約を受け
るのでｆｆ１ｆｆｉ的にΦくなりかつ１４ＩＩ性も−低
い等の柚々の問題点があった。Conventional swing arms for motorcycles have been made of pipes or presses, so the production costs for the molds are very high.Moreover, the molds are required every time the motorcycle model is changed or the mounting position of the shock absorber is changed. Changes were required, and mold depreciation costs were high. Furthermore, since a large number of parts are welded and assembled to form the swing arm as a product, the welding length is long and the manufacturing process is troublesome, resulting in poor productivity. In addition, since there were many welded parts, the strength varied, making it unstable, and the appearance was poor. Furthermore, since there are restrictions on the cross-sectional shape of the swing arm for two-wheeled vehicles, there have been many problems such as ff1ffi being Φ and 14II performance being low.
本発明は”上述した事情を考慮してなされたもので、溶
接箇所を茗しく減少させて強度的なバラツキを防止し、
充分に大きな剛性力を確保できるとともに、生産性を向
上させ、コストダウンを図ることができる二輪車用スイ
ングアームを提供することにある。The present invention has been made in consideration of the above-mentioned circumstances, and aims to reduce the number of welded parts in a flexible manner to prevent variations in strength.
It is an object of the present invention to provide a swing arm for a two-wheeled vehicle that can secure a sufficiently large rigidity, improve productivity, and reduce costs.
本発明の他の目的は溶接箇所を減少させることにより、
美的外観に擾れ、かつ軽聞構造の二輪車用スイングアー
ムを提供することである。Another object of the present invention is to reduce the number of welding points.
To provide a swing arm for a two-wheeled vehicle that has an aesthetic appearance and a lightweight structure.
〔発明の概要］
上述した目的を達成するために、本発明に係や二輪車用
スイングアームは閉じた断面形状を有するように押出し
成形された長尺軽金属製型材を所要の長さにＶＪｒｆＩ
シてスイングアームメンバを形成したことを特徴とする
ものである。[Summary of the Invention] In order to achieve the above-mentioned object, the swing arm for a two-wheeled vehicle according to the present invention is a swing arm for a two-wheeled vehicle in which a long light metal shape extruded to have a closed cross-sectional shape is VJrfI to a required length.
It is characterized in that the swing arm member is formed by using the swing arm member.
（発明の実施例）
以下、本発明に係る二輪車用スイングアームの実施例に
ついて添付図面を参照して説明する。(Embodiments of the Invention) Hereinafter, embodiments of a swing arm for a two-wheeled vehicle according to the present invention will be described with reference to the accompanying drawings.
第、１図（イ） Ｊ５よび（ロ）は本発明に係る二、輪
車のスイングアームの平面図および側面図を示し、図中
符号１．１は左右対向して設けられるスイングアームの
スイングアームメンバ、２は二輪車の一車体に軸着する
ピボットシャフト、３．３はりＡ７−７クスルシヤフト
の取付プレー１〜．４，４はスイングアームメンバ１，
１の上縁および下縁に突出成形したリブである。Figures 1 (a) and (b) show a plan view and a side view of a swing arm of a two-wheeled vehicle according to the present invention, and reference numeral 1.1 in the figure shows the swing of the swing arm provided left and right oppositely. Arm member 2 is a pivot shaft that is attached to one body of a two-wheeled vehicle, 3.3 beam A7-7 wheel shaft installation play 1-. 4, 4 is swing arm member 1,
This is a rib formed protrudingly on the upper and lower edges of 1.
しかして、上記スイングアーム１，１は、第２図（イ）
に示すようにダイスによる押出し成形によって長尺の型
材ａから成形される。この型材ａはアルミニウム材の如
き軽金属で作られ、その断面形状は第２図（ロ）に示す
如く閉じた断面形状を有し、この長尺、軽金属製型材ａ
の一側（上縁）あるいは他側（下縁）にリブＣを成形す
ると強度上有利である。゛ −
上記の如く得られた長尺軽金属製型材ａを切断線すに沿
ってスイングアームの所要の長さで切断する。このよう
にして得られた軽金属製型材ａを第１図（イ）の如く前
方部を少し内側に折り曲げてスイングアームメンバ１，
１に形成する。このメンバ１，１はｎｉ：ＩＱにピボッ
トシャフト２を溶接し、また後端にリヤーアクスルシャ
フト取付プレート３を取付けてスイングアームを構成す
る。Therefore, the swing arms 1, 1 are as shown in Fig. 2 (a).
As shown in the figure, a long shape material a is formed by extrusion molding using a die. This long, light metal mold material a is made of a light metal such as aluminum, and has a closed cross-sectional shape as shown in Figure 2 (B).
It is advantageous in terms of strength to form a rib C on one side (upper edge) or the other side (lower edge) of. - Cut the long light metal profile a obtained as described above along the cutting line to the required length of the swing arm. The light metal profile a obtained in this way is bent at the front part slightly inward as shown in FIG.
Form into 1. These members 1, 1 have a pivot shaft 2 welded to the ni:IQ, and a rear axle shaft mounting plate 3 attached to the rear end to form a swing arm.
なお、二輪車の中でも競技用二輪車においては少しでも
軽量化を図るために、上記軽金属製型材ａに形成したり
ブＣを、リヤーショックアブソーバｄの取付部を基準に
してそのモーメン１−の変化に応じプレス等で切除する
ことができる。叩ら、第２図（ハ）に示Ｊ°如く型材ａ
の上縁、下縁に形成したりブＣをリヤーショックアブソ
ーバｄの取イ・」部ｅを中心にその断面係数を徐々に変
化させるためにプレス等で切除する（斜線部が切除部）
。In addition, in order to reduce the weight of motorcycles for competition as much as possible among motorcycles, the above-mentioned light metal profile a is formed with a bulge C that is adjusted to the change in moment 1- with reference to the mounting part of the rear shock absorber d. It can be removed using a press or the like. After pounding, form material a as shown in Fig. 2 (c).
The sections C formed on the upper and lower edges are removed using a press or the like to gradually change the section modulus centering around the section e of the rear shock absorber d (the shaded section is the cut section).
.
この場合、すＸ７−ジヨツクアブソーバｄの取付位置が
前方あるいｔよ後方に変化しても、それにつれて切除部
を変化させるだけでよく、スイングアームの長尺軽金属
製型材は共通のものを使用することができ、スイングア
ーム部品の共用化を図ることができる。 −
さらにまた、本発明によるスイングアームは、上述した
りＡ７−アクスルシャフト取付プレート３を軽金属製型
材ａと一体に成形することもできる。In this case, even if the mounting position of the X7-joke absorber d changes from the front to the rear, it is only necessary to change the cutout part accordingly, and the long light metal profile of the swing arm is the same. This makes it possible to share swing arm parts. - Furthermore, in the swing arm according to the invention, the axle shaft mounting plate 3 described above or A7 can be molded integrally with the light metal profile a.
即ち第３図（ロ）もしくは（へ）に示す如、り、上述形
材ａのリブＣを一側に偏位させたり、また中央に貫通す
るリブＣ′とし、これを軽金属製型材ａの最後端部にお
いて、型材ａの胴部の一側面を残して切除する（第３図
（ハ）の斜線部）。即ちリブＣと胴部の残り部ｒとによ
って１ｑられる平板状部をリヤーアクスルシャフト取付
プレートとするらのである。That is, as shown in Fig. 3 (B) or (F), the rib C of the above-mentioned section a is shifted to one side, or the rib C' is made to penetrate through the center, and this is set as the rib C of the light metal section a. At the rearmost end, the shape material a is cut off leaving one side of the trunk (shaded area in FIG. 3(C)). That is, the flat plate-shaped portion formed by the rib C and the remaining portion r of the body is used as the rear axle shaft mounting plate.
なお、長尺軽金属製型材ａの断面は閉じ！、：断面形状
を有するもので、その−例を参考までに第４図（イ）か
ら（ト）に付記する。ただし、第４図（ロンは軽金属製
型材が閉じた断面形状を有さないので、他の型材に較べ
強度的に弱い。In addition, the cross section of the long light metal shape material a is closed! , :It has a cross-sectional shape, and examples thereof are shown in FIGS. 4(A) to 4(G) for reference. However, as shown in FIG. 4 (Ron), the light metal mold material does not have a closed cross-sectional shape, so it is weaker in strength than other mold materials.
また、二輪車用スイングアームは車体の中央下部後方側
に軸着される。スイングアームはピボットシャフト２廻
りに揺動自在に片持県状に取付けられ、スイングアーム
メンバ１，１の自由端側に俊輪を回転自在に軸支するよ
うになっている。このため、スイングアームメンバ１．
１には曲げ荷重の他に１１λり向上も作用し、曲げや捩
りに対して大きなｔｉｌＩ性を有ざなければならない。Further, the swing arm for a two-wheeled vehicle is pivotally attached to the rear side of the lower center of the vehicle body. The swing arm is attached in a cantilevered manner so as to be swingable around the pivot shaft 2, and a shuttlecock is rotatably supported on the free end side of the swing arm members 1,1. For this reason, swing arm member 1.
In addition to the bending load, 11λ resistance also acts on No. 1, and it must have great tilI resistance against bending and torsion.
しかし、本発明のスイングアームはスイングアームメン
バ１゜１が閉じた断面形状を右しているので捩りや曲げ
荷重に対しても充分に大きな剛性力を有し、かつリブＣ
を設けることにより曲げ荷重に対してより一層大きな強
度を有する。また、二輪車用スイングアームはスイング
アームメンバ１．１が外部に露呈しているので、美観を
高め商品価値を向上さぼる必要があるが、本発明による
スイングアームは溶接箇所が非常に少ないので、美的外
観を向上させ、商品性を高めることができる。However, in the swing arm of the present invention, since the swing arm member 1°1 has a closed cross-sectional shape, it has a sufficiently large rigidity against torsional and bending loads, and the rib C
By providing this, it has even greater strength against bending loads. In addition, since the swing arm member 1.1 of a motorcycle swing arm is exposed to the outside, it is necessary to enhance the aesthetic appearance and improve the product value, but the swing arm according to the present invention has very few welded parts, so It is possible to improve the appearance and increase the marketability.
以上に述べたように本発明に係る二輪車用スイングアー
ムは閉じた断面形状を有するように長尺軽金属製型材を
押出し成形したから、スイングアームは従来のプレス製
に比し安価である。溶接箇所が少なくかつ溶接線の長さ
が半分以下でずみ、かつ閉じた断面形状を有するので強
度上のバラツキがなく安定した捩りや曲げに対する強度
が丙られる。リヤーショックアブソーバの取（＝Ｊ位置
変更が型を修正することなく切除部の形状変更のみで可
能である。車の用途、機能別に広範囲の多種多様の断面
形状が自由に設定できる。ｆｆ１ｆｆｉ的に有利である
。大幅コストダウンができる。生産性が向上できる。外
観上美しく製作できる。As described above, since the swing arm for a two-wheeled vehicle according to the present invention is formed by extruding a long light metal molding so as to have a closed cross-sectional shape, the swing arm is cheaper than a conventional press-made swing arm. Since there are few welding points, the length of the weld line is less than half, and it has a closed cross-sectional shape, there is no variation in strength and stable strength against torsion and bending is improved. Rear shock absorber removal (=J position change is possible without modifying the mold, just by changing the shape of the cut out part.A wide variety of cross-sectional shapes can be freely set depending on the purpose and function of the car.ff1ffi-wise) It is advantageous. Cost can be significantly reduced. Productivity can be improved. It can be manufactured with a beautiful appearance.
第１図は本発明によって１ｑられるスイングアームを示
しくイ）は平面図、（ロ）は側面図、第２図（イ）は押
出し成形した形材の一部側面図、（ロ）は第２図（イ）
のローロ断面図、（ハ）は形材の成形加工を示した側面
図、（ニ）および（ホ）は第２図（ハ）の二一二および
ホーホ断面図、第３図（イ）は形材の側面図、（ロ）は
第３図（イ）のローロ断面図、（ハ）は形材を加工した
側面図、（ニ）および（ホ）は第３図（ハ）の二一二お
よびホーホ断面図、（へ）は第３図（ホ）の他の例を示
す断面図、第４図は形材の種々の断面形状を示す断面図
である。
１．１・・・スイングアームメンバ、２・・・ビボッ［
−シャフト、３・・・リヤー７クスルシヤフトの取付プ
レート、ａ・・・長尺軽金属製型材、ｂ・・・切断線、
Ｃ・・・リブ、ｄ・・・リヤーショックアブソーバ。
出願人代理人 波 多 野 久α。
２− 才、 −Fig. 1 shows a swing arm made by 1q according to the present invention; (a) is a plan view, (b) is a side view, Fig. 2 (a) is a partial side view of an extruded section, and (b) is a side view of the extruded section; Figure 2 (a)
, (C) is a side view showing the forming process of the section, (D) and (E) are 212 and Hoho sectional views of Figure 2 (C), and Figure 3 (A) is Side view of the shape material, (B) is a cross-sectional view of the roller in Figure 3 (A), (C) is a side view of the shape material after processing, (D) and (E) are 21 in Figure 3 (C). FIG. 4 is a sectional view showing another example of FIG. 3(e), and FIG. 4 is a sectional view showing various cross-sectional shapes of the profile. 1.1... Swing arm member, 2... Bibbo [
- Shaft, 3... Rear 7 wheel shaft mounting plate, a... Long light metal profile, b... Cutting line,
C...Rib, d...Rear shock absorber. Applicant's agent Hisa Hatano. 2- years old, -
Claims (1)
尺軽金属製型材を所要の長さに切断してスイングアーム
メンバを形成したことを特徴とする二輪車用スイングア
ーム。 ２、長尺軽金属製型材は閉じた断面形状の一側または他
側にリブを一体に設けた形状に押出し成形された特許請
求の範囲第１項に記載の二輪車用スイングアーム。 ３、リブを一体成形した長尺軽金属製型材を所要長さに
切断して構成されるスイングアームメンバからリブの一
部を切除し、前記長尺軽金属製型材の断面係数を変化さ
せた特許請求の範囲第２項に記載の二輪車用スイングア
ーム。 ４、スイングアームメンバの一端部を切除してリヤ−ア
クスルシャフト取付プレート用装着部を形成した特許請
求の範囲第１項に記載の二輪車用スイングアーム。[Scope of Claims] 1. A swing arm for a two-wheeled vehicle, characterized in that a swing arm member is formed by cutting a long light metal profile extruded to have a closed cross-sectional shape into a required length. 2. The swing arm for a two-wheeled vehicle according to claim 1, wherein the elongated light metal shape member is extruded into a closed cross-sectional shape with a rib integrally provided on one side or the other side. 3. A patent claim in which a portion of the rib is removed from a swing arm member constructed by cutting a long light metal shape material integrally molded with ribs to a required length, and the section modulus of the long light metal shape material is changed. A swing arm for a two-wheeled vehicle according to item 2 of the range. 4. The swing arm for a two-wheeled vehicle according to claim 1, wherein one end of the swing arm member is cut off to form a mounting portion for a rear axle shaft mounting plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13312785A JPS6181880A (en) | 1985-06-20 | 1985-06-20 | Swing arm for two-wheel barrow |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13312785A JPS6181880A (en) | 1985-06-20 | 1985-06-20 | Swing arm for two-wheel barrow |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6181880A true JPS6181880A (en) | 1986-04-25 |
| JPS632833B2 JPS632833B2 (en) | 1988-01-20 |
Family
ID=15097412
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP13312785A Granted JPS6181880A (en) | 1985-06-20 | 1985-06-20 | Swing arm for two-wheel barrow |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6181880A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH01175495U (en) * | 1988-06-02 | 1989-12-13 |
-
1985
- 1985-06-20 JP JP13312785A patent/JPS6181880A/en active Granted
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH01175495U (en) * | 1988-06-02 | 1989-12-13 |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS632833B2 (en) | 1988-01-20 |
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