JPH04100979U - motorcycle swing arm - Google Patents
motorcycle swing armInfo
- Publication number
- JPH04100979U JPH04100979U JP1083391U JP1083391U JPH04100979U JP H04100979 U JPH04100979 U JP H04100979U JP 1083391 U JP1083391 U JP 1083391U JP 1083391 U JP1083391 U JP 1083391U JP H04100979 U JPH04100979 U JP H04100979U
- Authority
- JP
- Japan
- Prior art keywords
- arm
- rear arm
- swing arm
- motorcycle
- processing
- 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.)
- Withdrawn
Links
- 239000000463 material Substances 0.000 claims abstract description 15
- 238000001125 extrusion Methods 0.000 claims abstract description 6
- 238000004519 manufacturing process Methods 0.000 abstract description 9
- 230000000694 effects Effects 0.000 abstract description 4
- 238000003466 welding Methods 0.000 description 6
- 238000000034 method Methods 0.000 description 4
- 238000009987 spinning Methods 0.000 description 3
- 239000006096 absorbing agent Substances 0.000 description 2
- 238000007796 conventional method Methods 0.000 description 2
- 239000002828 fuel tank Substances 0.000 description 2
- 230000035939 shock Effects 0.000 description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000002542 deteriorative effect Effects 0.000 description 1
- 230000013011 mating Effects 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 238000004080 punching Methods 0.000 description 1
Landscapes
- Axle Suspensions And Sidecars For Cycles (AREA)
Abstract
(57)【要約】
【構成】 前端を車体側に枢着し、後端で後輪を支持す
るリヤアームを有する自動二輪車のスイングアームにお
いて、前記リヤアームを押し出し加工もしくは引き抜き
加工による展伸材にて形成するとともにプレス加工にて
このリヤアームの少なくとも一方の端部を側面視テーパ
状に形成したこと。
【効果】 前記リヤアームを押し出し加工もしくは引き
抜き加工による展伸材にて形成するとともにプレス加工
にてリヤアーム端部のテーパ部を形成するので、部品点
数の削減、製造コストの低減化、外観性の向上を図るこ
とができる。
(57) [Summary] [Structure] In a swing arm for a motorcycle having a rear arm whose front end is pivotally connected to the vehicle body side and whose rear end supports a rear wheel, the rear arm is made of a stretched material by extrusion processing or drawing processing. At least one end of the rear arm is formed into a tapered shape when viewed from the side by press working. [Effect] The rear arm is formed from a stretched material by extrusion processing or drawing processing, and the tapered portion at the end of the rear arm is formed by press processing, so the number of parts is reduced, manufacturing costs are reduced, and appearance is improved. can be achieved.
Description
【０００１】0001
本考案は自動二輪車のスイングアームに関するものである。 The present invention relates to a swing arm for a motorcycle.
【０００２】0002
自動二輪車のスイングアームにおいては、左右のリヤアームをクロスメンバー を介して結合し、前記リヤアームの前端を車体側に枢着するとともにこのリヤア ームの後端で後輪を支持するようにしたものがある。 In the swing arm of a motorcycle, the left and right rear arms are connected to cross members. The front end of the rear arm is pivotally connected to the vehicle body side, and the rear arm is There is one that supports the rear wheel at the rear end of the arm.
【０００３】 そして又このようなスイングアームにあっては、例えば特開平２−１２８９８ ５号公報に示されるようにリヤアームの前部、後部の少なくとも一方を側面視テ ーパ状にし、中央部分の高さを大きくしたものがある。0003 Furthermore, regarding such a swing arm, for example, Japanese Patent Application Laid-Open No. 2-12898 As shown in Publication No. 5, at least one of the front and rear parts of the rear arm is viewed from the side. There is one in which the height of the central part is increased.
【０００４】 従来において、このようなリヤアームのテーパ部分を形成するには、前記公報 にも開示されているように前後方向に長く且つ断面コ字状を成す左右の半体を嵌 合するとともにこれらの半体の嵌合部分を溶接するか、或いはリヤアームの端部 を前後にＶ字状に切欠くとともにこの切欠きを閉じるように上下から加圧して押 しつぶし、閉じられた部分を溶接するか、或いは丸パイプをスピニング加工して テーパ状にし、その後でパイプを角形状にするという手段がとられていた。0004 Conventionally, in order to form such a tapered portion of a rear arm, the method described in the above-mentioned publication is known. As disclosed in At the same time, either weld the mating parts of these halves or attach the end of the rear arm. Cut out a V-shaped notch in the front and back, and apply pressure from above and below to close this notch. By crushing and welding closed parts, or by spinning round pipes. The method used was to make the pipe tapered and then make it square.
【０００５】[0005]
しかしながら左右の半体を嵌合して溶接するという手段を取ると、部品数が増 え、又、溶接する部分も長いので、製造が困難になり製造コストが上昇し、更に は溶接時の熱の影響でリヤアームの強度も不利になるという不具合がある。 However, if we fit and weld the left and right halves together, the number of parts will increase. Also, the welded parts are long, making manufacturing difficult and increasing manufacturing costs. The problem with this is that the strength of the rear arm is also disadvantageous due to the effects of heat during welding.
【０００６】 又、リヤアームの端部をＶ字状に切欠いて上下から押しつぶし、閉じた部分を 溶接する手段を取ると、リヤアームの側面に切欠き部分が残り、外観性が悪化し 、又、前述同様溶接をするので製造コストの上昇、強度上の不利を招く。[0006] Also, cut out the end of the rear arm in a V shape and press it from above and below to open the closed part. If welding is used, a notch will remain on the side of the rear arm, deteriorating the appearance. In addition, since welding is performed as described above, the manufacturing cost increases and there are disadvantages in terms of strength.
【０００７】 更に丸パイプをスピニング加工するという手段ではリヤアームにスピニング加 工の跡が残り、外観性が悪化するという不具合がある。[0007] Furthermore, by spinning a round pipe, the rear arm cannot be spun. There is a problem that traces of work remain and the appearance deteriorates.
【０００８】[0008]
前記課題を解決するため本考案は前端を車体側に枢着し、後端で後輪を支持す るリヤアームを有する自動二輪車のスイングアームにおいて、前記リヤアームを 押し出し加工もしくは引き抜き加工による展伸材にて形成するとともにプレス加 工にてこのリヤアームの少なくとも一方の端部を側面視テーパ状に形成したこと を特徴とする。 In order to solve the above problem, the present invention pivots the front end to the vehicle body and supports the rear wheel at the rear end. In the swing arm of a motorcycle having a rear arm, the rear arm is Formed by extrusion processing or drawing processing, and press processing. At least one end of this rear arm is formed into a tapered shape when viewed from the side. It is characterized by
【０００９】[0009]
前記リヤアームを押し出し加工もしくは引き抜き加工による展伸材にて形成す るとともにプレス加工にてリヤアーム端部のテーパ部を形成するので、部品点数 の削減、製造コストの低減化、外観性の向上を図ることができる。 The rear arm is formed from a stretched material by extrusion processing or drawing processing. At the same time, the tapered part of the rear arm end is formed by press processing, so the number of parts is reduced. It is possible to reduce the cost, reduce the manufacturing cost, and improve the appearance.
【００１０】0010
以下に本考案の好適一実施例を添付図面に基づいて説明する。 A preferred embodiment of the present invention will be described below with reference to the accompanying drawings.
【００１１】 図１は本考案に係るスイングアームの平面図、図２は同側面図、図３は図１の ３−３線断面図を示す。[0011] Fig. 1 is a plan view of the swing arm according to the present invention, Fig. 2 is a side view of the same, and Fig. 3 is a plan view of the swing arm according to the present invention. A sectional view taken along line 3-3 is shown.
【００１２】 先ず、図６を用いて自動二輪車の概略について説明する。 図６中、１はメインフレームで、このメインフレーム１の前端にはヘッドチュ ーブ２を設け、このヘッドチューブ２でフロントフォーク３を操向自在に支持し 、このフロントフォーク３で前輪４を支持する。0012 First, the outline of a motorcycle will be explained using FIG. 6. In Figure 6, 1 is the main frame, and the front end of this main frame 1 is equipped with a head tube. The head tube 2 supports the front fork 3 so that it can be steered freely. , this front fork 3 supports the front wheel 4.
【００１３】 前記メインフレーム１の上部には燃料タンク６を取付け、メインフレーム１の 下部にはエンジンＥを取付け、燃料タンク６の後方にはシート７を設ける。 又、前記メインフレーム１の後端にはスイングアーム９の前端を揺動自在に設 け、このスイングアーム９で後輪１０を支持する。[0013] A fuel tank 6 is attached to the upper part of the main frame 1. An engine E is installed at the bottom, and a seat 7 is provided behind the fuel tank 6. Further, the front end of a swing arm 9 is swingably installed at the rear end of the main frame 1. This swing arm 9 supports the rear wheel 10.
【００１４】 前記メインフレーム１の下端にはダウンフレーム１２の後端を取付け、このダ ウンフレーム１２にはリンク１３の前端を枢着する。リンク１３の後端はリンク １４の中央部に枢着し、リンク１４の後端は後述するクロスメンバー１８の支持 軸２０に枢着する。又、リンク１４の前端には緩衝器１５の下端を取付け、この 緩衝器１５の上端は車体側に取付ける。[0014] The rear end of the down frame 12 is attached to the lower end of the main frame 1. The front end of a link 13 is pivotally connected to the unframe 12. The rear end of link 13 is a link 14, and the rear end of the link 14 is supported by a cross member 18, which will be described later. Pivotally attached to the shaft 20. Also, the lower end of the shock absorber 15 is attached to the front end of the link 14. The upper end of the shock absorber 15 is attached to the vehicle body side.
【００１５】 次に図１及至図３を用いてスイングアーム９について説明する。 スイングアーム９は左右のリヤアーム１７，１７と、この左右のリヤアーム１ ７，１７を連結するクロスメンバー１８とから成る。[0015] Next, the swing arm 9 will be explained using FIGS. 1 to 3. The swing arm 9 includes left and right rear arms 17, 17, and the left and right rear arms 1. and a cross member 18 that connects 7 and 17.
【００１６】 前記クロスメンバー１８の下面側には取付部１９を設け、この取付部１９に固 着した支持軸２０に前記リンク１４の後端を枢着する（図６参照）。[0016] A mounting portion 19 is provided on the lower surface side of the cross member 18, and a The rear end of the link 14 is pivotally connected to the attached support shaft 20 (see FIG. 6).
【００１７】 前記リヤアーム１７の後端には後輪１０の車軸１０ａを支持する支持ブラケッ ト２２を固設し、又、リヤアーム１７の前端にはクロスパイプ２３を溶着し、こ のクロスパイプ２３をメインフレーム１に設けた支持軸２４に回動自在に装着す る（図６参照）。[0017] A support bracket for supporting the axle 10a of the rear wheel 10 is provided at the rear end of the rear arm 17. A cross pipe 23 is welded to the front end of the rear arm 17. The cross pipe 23 is rotatably attached to a support shaft 24 provided on the main frame 1. (See Figure 6).
【００１８】 リヤアーム１７は中央部、即ちクロスメンバー１８の溶着部分の高さが大きく 形成されており、前端側、後端側には夫々テーパ部１７ａ，１７ｂが形成されて いる。従って図２に示すようにリヤアーム１７は側面視では前端側、後端側が夫 々端部にいくほど漸次高さが小さくなるように形成される。[0018] The rear arm 17 has a large height at the center, that is, at the welded part of the cross member 18. Tapered portions 17a and 17b are formed on the front end side and the rear end side, respectively. There is. Therefore, as shown in FIG. 2, when viewed from the side, the rear arm 17 has two opposite sides: It is formed so that the height gradually decreases toward each end.
【００１９】 又、図３にも示すようにテーパ部１７ｂの上下のコーナー部には傾斜部１７ｃ ，１７ｃ及び突部１７ｄ，１７ｄを形成し、テーパ部１７ａにも同様のものを形 成する。[0019] Further, as shown in FIG. 3, there are inclined portions 17c at the upper and lower corners of the tapered portion 17b. , 17c and protrusions 17d, 17d, and the same is formed on the tapered portion 17a. to be accomplished.
【００２０】 以上の如きリヤアームは以下のようにして製造する。[0020] The rear arm as described above is manufactured as follows.
【００２１】 先ず、アルミ等の材料を押し出しもしくは引き抜き加工し、図３に示すような 角パイプ状の展伸材Ａを得る。この展伸材Ａは前端から後端に至るまで高さは同 一となっている。[0021] First, a material such as aluminum is extruded or drawn to form a material like the one shown in Figure 3. A rectangular pipe-shaped wrought material A is obtained. This stretched material A has the same height from the front end to the rear end. It is one.
【００２２】 次にプレス加工によりこの展伸材Ａに前述した傾斜部１７ｃ，１７ｃ及び突部 １７ｄ，１７ｄを形成し、展伸材Ａの上下高さを縮めることでこの展伸材Ａの前 端側、後端側にテーパ部１７ａ，１７ｂを形成し、上述したリヤアーム１７を得 る。[0022] Next, the above-mentioned inclined portions 17c and 17c and protrusions are formed on this wrought material A by press working. 17d, 17d and reduce the vertical height of the wrought material A. The above-mentioned rear arm 17 is obtained by forming tapered parts 17a and 17b on the end side and the rear end side. Ru.
【００２３】 尚、図４，図５に示すように展伸材Ａをプレス加工し、左右側面に膨出部１７ ｅ，１７ｅを形成することでテーパ部１７ａ，１７ｂを形成しても良い。[0023] In addition, as shown in FIGS. 4 and 5, the wrought material A is pressed, and bulges 17 are formed on the left and right sides. Tapered portions 17a and 17b may be formed by forming portions e and 17e.
【００２４】 本実施例のリヤアーム１７は以上のようにして形成され、従って以下のような 効果がある。 先ず、本実施例のリヤアーム１７は１本の展伸材から形成するので、従来のよ うに左右の半体を嵌合するとともにこれらを溶着するものに比べ、部品点数が少 なくなる。従って製造が容易になり、製造コストを低減させることができる。又 、本実施例では溶接も行わないので、この点においても製造が容易になり、又、 リヤアーム１７は溶接時の熱の影響を受けないので強度上も有利になる。[0024] The rear arm 17 of this embodiment is formed as described above, and therefore has the following features. effective. First, since the rear arm 17 of this embodiment is formed from a single wrought material, it is not necessary to use the conventional method. The number of parts is reduced compared to a method in which the left and right halves are fitted together and welded together. It disappears. Therefore, manufacturing becomes easy and manufacturing costs can be reduced. or In this embodiment, welding is not performed, so manufacturing is easy in this respect as well. Since the rear arm 17 is not affected by heat during welding, it is advantageous in terms of strength.
【００２５】 更には本実施例のリヤアーム１７ではテーパ部１７ａ、１７ｂをプレス加工に て形成するので、従来に比べて外観性を向上させることができる。即ち、従来の ようにリヤアームの前部をＶ字状に切欠いたり、丸パイプをスピニング加工して テーパ状を形成すると切欠き部、或いはスピニング加工の跡が残るが、本実施例 ではこのような跡が残らず、加工後の外観性が向上するのである。[0025] Furthermore, in the rear arm 17 of this embodiment, the tapered parts 17a and 17b are pressed. Since it is formed using the same method, the appearance can be improved compared to the conventional method. That is, conventional The front part of the rear arm was cut out in a V shape, and the round pipe was spun. If a tapered shape is formed, notches or marks from spinning will remain, but in this example This leaves no traces and improves the appearance after processing.
【００２６】 図７は別実施例に係るリヤフォークの平面図、図８は同側面図、図９は図７の ９−９線断面図を示す。[0026] 7 is a plan view of a rear fork according to another embodiment, FIG. 8 is a side view of the same, and FIG. 9 is a plan view of a rear fork according to another embodiment. A sectional view taken along line 9-9 is shown.
【００２７】 この実施例では図９のように押し出し、もしくは引き抜きにより角パイプ状の 展伸材Ａを形成した後、プレス加工によりこの展伸材Ａの左右側壁に凹部１７ｆ ，１７ｆを形成することでリヤアーム１７の前端側、後端側にテーパ部１７ａ， １７ｂを形成している。[0027] In this example, as shown in Fig. 9, a square pipe shape is formed by extrusion or drawing. After forming the wrought material A, recesses 17f are formed in the left and right side walls of the wrought material A by press working. , 17f, the tapered portions 17a, 17f are formed on the front end side and the rear end side of the rear arm 17. 17b.
【００２８】[0028]
以上述べたように本考案によれば前記リヤアームを押し出し加工もしくは引き 抜き加工による展伸材にて形成するとともにプレス加工にてリヤアーム端部のテ ーパ部を形成するので、部品点数の削減、製造コストの低減化、外観性の向上を 図ることができる。 As described above, according to the present invention, the rear arm is extruded or pulled. It is formed from expanded material by punching, and the end of the rear arm is formed by pressing. Since it forms the outer part, it reduces the number of parts, lowers manufacturing costs, and improves appearance. can be achieved.
【図１】本考案に係るスイングアームの平面図[Fig. 1] Plan view of the swing arm according to the present invention
【図２】本考案に係るスイングアームの側面図[Fig. 2] Side view of the swing arm according to the present invention
【図３】図１の３−３線断面図[Figure 3] Cross-sectional view taken along line 3-3 in Figure 1
【図４】別実施例に係るスイングアームの側面図[Fig. 4] Side view of a swing arm according to another embodiment
【図５】図４の５−５線断面図[Figure 5] Cross-sectional view taken along line 5-5 in Figure 4
【図６】自動二輪車の側面図[Figure 6] Side view of motorcycle
【図７】別実施例に係るスイングアームの平面図[Fig. 7] Plan view of a swing arm according to another embodiment.
【図８】別実施例に係るスイングアームの側面図[Fig. 8] Side view of a swing arm according to another embodiment
【図９】図７の９−９線断面図[Figure 9] Cross-sectional view taken along line 9-9 in Figure 7
９…スイングアーム １０…後輪 １７…リヤアーム １７ａ，１７ｂ…テーパ部 9...Swing arm 10...Rear wheel 17...Rear arm 17a, 17b...Tapered part
Claims (1)
持するリヤアームを有する自動二輪車のスイングアーム
において、前記リヤアームを押し出し加工もしくは引き
抜き加工による展伸材にて形成するとともにプレス加工
にてこのリヤアームの少なくとも一方の端部を側面視テ
ーパ状に形成したことを特徴とする自動二輪車のスイン
グアーム。Claim 1: A swing arm for a motorcycle having a rear arm whose front end is pivotally connected to the vehicle body side and whose rear end supports a rear wheel, wherein the rear arm is formed of a wrought material by extrusion or drawing and is pressed. A swing arm for a motorcycle, characterized in that at least one end of the rear arm is formed into a tapered shape when viewed from the side.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1083391U JPH04100979U (en) | 1991-02-06 | 1991-02-06 | motorcycle swing arm |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1083391U JPH04100979U (en) | 1991-02-06 | 1991-02-06 | motorcycle swing arm |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH04100979U true JPH04100979U (en) | 1992-09-01 |
Family
ID=31744084
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1083391U Withdrawn JPH04100979U (en) | 1991-02-06 | 1991-02-06 | motorcycle swing arm |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH04100979U (en) |
-
1991
- 1991-02-06 JP JP1083391U patent/JPH04100979U/en not_active Withdrawn
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| Date | Code | Title | Description |
|---|---|---|---|
| A300 | Application deemed to be withdrawn because no request for examination was validly filed |
Free format text: JAPANESE INTERMEDIATE CODE: A300 Effective date: 19950518 |