JPS5920781A - Front fork for motorcycle, etc. - Google Patents
Front fork for motorcycle, etc.Info
- Publication number
- JPS5920781A JPS5920781A JP13100282A JP13100282A JPS5920781A JP S5920781 A JPS5920781 A JP S5920781A JP 13100282 A JP13100282 A JP 13100282A JP 13100282 A JP13100282 A JP 13100282A JP S5920781 A JPS5920781 A JP S5920781A
- Authority
- JP
- Japan
- Prior art keywords
- motorcycle
- bottom case
- front fork
- baffle plate
- cowling
- 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
- Steering Devices For Bicycles And Motorcycles (AREA)
- 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】
本発明は自動二輪車等の前車輪を支承するフロントフォ
ークに関する。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a front fork that supports a front wheel of a motorcycle or the like.
競技用自動二輪車、あるいは高性能実用二輪車等では、
これまで、ステアリング・ヘッド近傍に装備されるカウ
リング（風防スクリーン）の形状等を工夫して空気抵抗
の低減をはかつてきたが、カウリングと他の部材との関
連において空気抵抗を全体酌、あるいは総合的に低減さ
せることについては余シ配慮されていなかった。For competition motorcycles or high-performance practical motorcycles,
Until now, air resistance has been reduced by devising the shape of the cowling (windshield screen) installed near the steering head. No particular consideration was given to reducing the
本発明は、従来のカウリングを装備した二輪車では、ｊ
＠１図に示すように、カウリングｌのＦ’＋ｆＴ 方（
図で左方）で前車輪２を支承している円形断面のフロン
トフォーク３の後側で乱流が発生し、これがフロントフ
ォーク３とカウリング１との間の気流のっながシを損な
って空気抵抗を発生する一つの原因となっていることに
・着目してなされたものでおる。The present invention provides a two-wheeled vehicle equipped with a conventional cowling.
@ As shown in Figure 1, the F'+fT direction of the cowling l (
Turbulence occurs on the rear side of the front fork 3 with a circular cross section that supports the front wheel 2 (on the left in the figure), and this impairs the air flow between the front fork 3 and the cowling 1. This was done by focusing on the fact that this is one of the causes of air resistance.
すなわち、本発明は、フロントフォークのボトムケース
の後側に、外気流整流板をボトムケースに沿って設ける
ことにより、上ｌ己従来の問題点を解消したもので、ボ
トムケース自体の空気抵抗はもとよシ、これとカウリン
グとの関連において二輪車等の空気抵抗を改善すること
ができる、自動二輪車等のフロント７オークを提供する
ことを目的とする。以下、本発明を図面を参照して説明
する。That is, the present invention solves the above conventional problems by providing an outside airflow rectifying plate along the bottom case on the rear side of the bottom case of the front fork, and the air resistance of the bottom case itself is reduced. An object of the present invention is to provide a front 7 oak for a motorcycle, etc., which can improve the air resistance of the motorcycle, etc. in conjunction with a cowling. Hereinafter, the present invention will be explained with reference to the drawings.
第２図ないし第４図は本発明の一実施例を示すもので、
図中１０は自動二輪車である。この自動二輪車１０はカ
ウリング１１を備え、またその前車輪１２は、通例のよ
うに上ｔＪｒ２カウリング１１の前方（第２図で左方）
においてフロントフォーク１３に支承されている。Figures 2 to 4 show an embodiment of the present invention,
In the figure, 10 is a motorcycle. This motorcycle 10 is equipped with a cowling 11, and its front wheel 12 is located in front of the upper tJr2 cowling 11 (to the left in FIG. 2) as usual.
It is supported by the front fork 13 at.
しかして上り己フロントフォーク１３のボトムケース１
４は、その横断面形状を円形に形成され、後側（第２図
ないし第４図において右１１１１ ）にボトルケース１
４の軸線方向に延在する整流板１５を備える。上記の整
流板１５は、外気流を整流して、ボトムケース１４の後
ｆｌＧで発生する気流の剥離と乱流を緩オロするもので
あって、その外面１５ａを車体中心線０に平行なボトム
ケース１４の外側の接線Ｔに一致させ、かつ上記車体中
心線０に指向する上下２個の通風路１６を形成してボト
ムケース１４に一体に設けられている。However, the bottom case 1 of the front fork 13
4 has a circular cross-sectional shape, and a bottle case 1 is located on the rear side (1111 on the right in Figs. 2 to 4).
A rectifying plate 15 extending in the axial direction of the 4 is provided. The above-mentioned rectifier plate 15 rectifies the outside airflow and gently reduces the separation and turbulence of the airflow that occurs in the rear flG of the bottom case 14. Two ventilation passages 16, upper and lower, which are aligned with the tangent line T on the outside of the case 14 and directed toward the vehicle body center line 0, are integrally provided in the bottom case 14.
上記の構成においては、第４図に示すように、ボトムケ
ース１４の後側に設けられた整流板１５が、外気流を整
流して、ボトムケース１４の後側に発生する気流の剥離
及び乱流を可及的に抑止するので、空気抵抗が小さく抑
えられる。しかも全体として気流の剥離点が後方に移動
すると同時に、フロントフォーク１３とカウリング１１
との間の気流のつながシがスムーズになるため、カウリ
ング１１との関連において自動二輪車１０の空気抵抗が
全体的に低減せしめられるようになる。なお、上記にお
いて通風路１６は外気流の一部をボトムケース１４の後
側に流し、気流の剥離と乱流の発生を抑止する。In the above configuration, as shown in FIG. 4, the rectifier plate 15 provided on the rear side of the bottom case 14 rectifies the outside airflow, causing separation and turbulence of the airflow that occurs on the rear side of the bottom case 14. Since the flow is suppressed as much as possible, air resistance can be kept low. Moreover, the separation point of the airflow as a whole moves rearward, and at the same time, the front fork 13 and cowling 11
Since the air flow between the cowling 11 and the cowling 11 is smoothly connected, the air resistance of the motorcycle 10 in relation to the cowling 11 is reduced overall. Note that in the above, the ventilation passage 16 allows a part of the outside airflow to flow toward the rear side of the bottom case 14, thereby suppressing separation of the airflow and occurrence of turbulence.
次に本発明の他の実施例を説明する。Next, another embodiment of the present invention will be described.
第５図は本発明の第二実施例を示すものであり、整流板
１５はボトムケース１４とは別体に作製され、ボトムケ
ース１４との間に通風路１６を形成して取付はボルト等
の固着具１７によ？てボトムケース１４に固定されてい
る。この例のものは、整流板１５が着脱自在となってい
るだめ、破損したような場合でも簡単に交換できるとと
もに、既存の二輪車のボトムケース１４にも自由に取り
付けることができるという長所を有する。機能的には第
２図及び第３図の第一実施例のものと全く回−である。FIG. 5 shows a second embodiment of the present invention, in which a rectifier plate 15 is manufactured separately from the bottom case 14, a ventilation passage 16 is formed between the bottom case 14, and the rectifying plate 15 is attached using bolts or the like. By the fixing tool 17? and is fixed to the bottom case 14. This example has the advantage that since the current plate 15 is detachable, it can be easily replaced even if it is damaged, and it can also be freely attached to the bottom case 14 of an existing two-wheeled vehicle. Functionally, it is completely the same as that of the first embodiment shown in FIGS. 2 and 3.
第６図は本発明の第三実施例を示すもので、平板状の整
流板１５がボトムケース１４に設けられた取付は部１４
ｇに取付はボルト等の固着具１７によシ固定されている
。この実施例のフロントフォーク１３には通風路１６が
設けられていない。FIG. 6 shows a third embodiment of the present invention, in which a flat rectifying plate 15 is attached to the bottom case 14.
g is fixed with a fixing member 17 such as a bolt. The front fork 13 of this embodiment is not provided with a ventilation passage 16.
第７図は本発明の第四実施例を示すものであって、この
場合は、整流板１５が通風路を形成せずにボトムケース
１４に一体に設けられ、さらに整流板１５にボトムケー
ス１４内の油圧系１４ｂと連通ずるオイル通路１５ｂが
設けられている。この構成においては、オイル通路を別
途に設けなくて済むので、構造が簡単になる。この図に
おいて１８は整流板１５に嵌め付けたプジグである。FIG. 7 shows a fourth embodiment of the present invention. In this case, the current plate 15 is provided integrally with the bottom case 14 without forming a ventilation path, and the bottom case 14 is provided integrally with the current plate 15. An oil passage 15b communicating with the hydraulic system 14b inside is provided. In this configuration, since there is no need to provide a separate oil passage, the structure is simplified. In this figure, reference numeral 18 denotes a pudge fitted to the rectifying plate 15.
第８図は、整流板１５をボトムケース１４に一体に設け
た前記第−及び第四実施例の変形例であ拐、整流板１５
は車体の中心線Ｏ（第４図）に対して外方へ指向させて
ボトムケース１４に一体に設けられている。ここで車体
中心線ＯＫ対する整流板１５の角度θは、整流板１５と
前記カウリング１１（第２図）との間の気流のつカがシ
がスムーズになるように、カウリング１１０位ｒ１Ｍ、
＋形状等を勘案して決定される。FIG. 8 shows a modification of the fourth and fourth embodiments in which the current plate 15 is integrally provided with the bottom case 14.
is integrally provided in the bottom case 14 so as to be oriented outward with respect to the center line O of the vehicle body (FIG. 4). Here, the angle θ of the rectifying plate 15 with respect to the vehicle body center line OK is set so that the airflow between the rectifying plate 15 and the cowling 11 (FIG. 2) is smooth.
+Determined by taking shape etc. into consideration.
第９図は本発明の第六実施例を示すもので、整流板１５
はボトムケース１４の上部と下部に設けられた一対の取
付は部１４ａに取付はボルト等の固着具１７によって取
シ付けられ、固着具１７を中心に回動させて車体中心線
０に対する角度θを ４・自由に変えることができるよ
うに構成されている。FIG. 9 shows a sixth embodiment of the present invention, in which the current plate 15
is attached to a pair of mounting parts 14a provided at the upper and lower parts of the bottom case 14 by fasteners 17 such as bolts, and is rotated around the fasteners 17 to adjust the angle θ with respect to the vehicle body centerline 0. 4. It is structured so that it can be changed freely.
この構成においては、整流板１５０角度θを調節するこ
とによって、整流板１５とカウリング１１との間の気流
のつながシを最良にすることができる。In this configuration, by adjusting the angle θ of the current plate 150, the airflow connection between the current plate 15 and the cowling 11 can be optimized.
以上、幾つかの実施例を説明したが、例えば第９図の整
流板１５に通風路１６を形成するなど、各実施例の特徴
的構成を組み合わせたり、通風路の個数や形状を変えた
シすることは自由である。Several embodiments have been described above, but the characteristic configurations of each embodiment may be combined, such as forming the ventilation passages 16 on the rectifying plate 15 in FIG. 9, or the number and shape of the ventilation passages may be changed. You are free to do what you want.
以上説明したよ°うに、本発明の自動二輪車等のフロン
トフォークは、ボトムケースの後側に、該ボトムケース
の軸線方向に延在する外気流整流板を配設して成シ、上
記整流板が外気流を整流して、フロントフォークの後側
で発゛生ずる気流の剥離と乱流を緩和し、またフロント
フォークとカウリングとの間の気流のつながシをスムー
ズにするので、フロントフォークの空気抵抗はもとよυ
、カウリングとの関連において自動二輪車等の空気抵抗
が全体的に低減される効果がある。As explained above, the front fork of the present invention, such as a motorcycle, is constructed by disposing an outside air flow baffle plate extending in the axial direction of the bottom case on the rear side of the bottom case. rectifies the outside airflow, alleviates airflow separation and turbulence that occurs behind the front fork, and also smoothes the airflow connection between the front fork and cowling, so the airflow around the front fork is improved. Resistance is a given υ
, in relation to the cowling, has the effect of reducing the air resistance of motorcycles, etc. as a whole.
第１図は従来の自動二輪車のフロントフォークとカウリ
ング周辺における気流の説明図、第２図は本発明を爽施
した自動二輪車の側面図、第３図（Ａｌは本発明に係る
フロントフォークの側面図、第３図（Ｂ）は第３図（Ａ
ｌの（ＩＩＩ−ＩＩＩ）線に沿う断面図、第４図は本発
明におけるフロントフォークとカウリング周辺の気流の
説明図、第５図（Ａｌは本発明の第二実施例のフロント
フォークの側面図、ＩＢ５図（Ｂ）は第５図（Ａｌの＜
Ｖ−Ｖ ）線に沿う断面図、第６図（Ａｌは本発明の第
三実施例のフロントフォークのｌＩＱ面図、第６図（Ｂ
）は第６図（蜀の（Ｖｌ−ＶＩ ）線に沿う断面図、第
７図（Ａ）は本発明の第四実施例のフロントフォークの
側面図、第７図（Ｂ）は第７図（Ｎの（Ｖｌｌ−■）線
に沿う断面図、第７図（Ｃ１は同（■目′−Ｍｌ’ ）
線に沿う断面図、第８図（Ａ）は本発明の第五実施例の
フロントフォークの側面図、第８図（Ｂｌは第８図（Ａ
）のＣ■−■）１１ｉｉに沿う断面図、第９図（蜀は本
発明の第六実施例のフロントフォークの側面図、第９図
（Ｂ）は第９図（４）の（ＩＸ−ＩＸ）線に沿う断面図
である。
１０・・・自動二輪車、１３・・・フロントフォーク、
１４・・・ボトムケース、１４ｂ・・・油圧系、１５・
・・整流板、１５ｂ・・・オイル通路、１６・・・通風
路、１７・・・固着具、０・・・車体中心線。
出願人 本田技研工業株式会社Figure 1 is an explanatory diagram of airflow around the front fork and cowling of a conventional motorcycle, Figure 2 is a side view of a motorcycle to which the present invention has been applied, and Figure 3 (Al is a side view of the front fork according to the present invention). Figure 3 (B) and Figure 3 (A)
4 is an explanatory diagram of the airflow around the front fork and cowling in the present invention, and FIG. 5 is a side view of the front fork of the second embodiment of the present invention. , IB5 (B) is shown in Figure 5 (Al <
A sectional view taken along the line V-V (V-V), FIG.
) is a sectional view taken along the line (Vl-VI) of FIG. 6, FIG. 7(A) is a side view of the front fork of the fourth embodiment of the present invention, and FIG. (Cross-sectional view along the (Vll-■) line of N, Figure 7 (C1 is the same (■'-Ml')
8(A) is a side view of the front fork of the fifth embodiment of the present invention, and FIG. 8(A) is a sectional view taken along the line.
), FIG. 9 is a side view of the front fork of the sixth embodiment of the present invention, and FIG. 9(B) is a cross-sectional view along line C■-■)11ii of FIG. IX) is a sectional view taken along line 10...motorcycle, 13...front fork,
14...Bottom case, 14b...Hydraulic system, 15.
... rectifying plate, 15b... oil passage, 16... ventilation passage, 17... fixing tool, 0... vehicle body center line. Applicant Honda Motor Co., Ltd.
Claims (1)
に延在する外気流整流板を配設したことな特徴とする自
動二輪車等のフロントフォーク。 ２ 上記整流板をボトムケースと一体に成形してなる特
許請求の範囲第１項記載の自動二輪車等のフロントフォ
ーク。 ３ 整流板に車体の中心線に指向する通風路を形成して
なる特許請求の範囲第２項記載の自動二輪車等のフロン
ト７オーク。 ４ 上記整流板をボトムケースに対し、固着具を介して
取シ付けてなるｌ特許請求の範囲第１項記載の自動二輪
車等のフロントフォーク。 ５ ボトムケースと整流板の間に通風路を設けてなる特
許請求の範囲第４項記載の自動二輪車等のフロントフォ
ーク。 ６ 上記整流板を車体中心線に対して、外方へ指向させ
てなる特許請求の範囲第１項記載の自動二輪車等の７０
ントフオーク。 ７ 上記整流板に、ボトムケース内の油圧系と連通ずる
オイル通路を配設してなる特許請求の範囲第１項記載の
自動二輪車等のフロントフォーク。[Scope of Claims] l. A front fork for a motorcycle, etc., characterized in that an outside airflow baffle plate extending in the axial direction of the bottom case is disposed on the rear side of the bottom case. 2. A front fork for a motorcycle or the like as set forth in claim 1, wherein the baffle plate is integrally formed with a bottom case. 3. A front 7 oak for a motorcycle, etc., according to claim 2, wherein a ventilation passage directed toward the centerline of the vehicle body is formed in the baffle plate. 4. A front fork for a motorcycle or the like as set forth in claim 1, wherein the baffle plate is attached to the bottom case via a fixing device. 5. A front fork for a motorcycle or the like as set forth in claim 4, wherein a ventilation passage is provided between the bottom case and the current plate. 6. 70 of the motorcycle, etc. according to claim 1, wherein the baffle plate is oriented outward with respect to the center line of the vehicle body.
ntofoak. 7. A front fork for a motorcycle or the like according to claim 1, wherein the baffle plate is provided with an oil passage communicating with a hydraulic system in the bottom case.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13100282A JPS5920781A (en) | 1982-07-27 | 1982-07-27 | Front fork for motorcycle, etc. |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13100282A JPS5920781A (en) | 1982-07-27 | 1982-07-27 | Front fork for motorcycle, etc. |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5920781A true JPS5920781A (en) | 1984-02-02 |
| JPS6319397B2 JPS6319397B2 (en) | 1988-04-22 |
Family
ID=15047650
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP13100282A Granted JPS5920781A (en) | 1982-07-27 | 1982-07-27 | Front fork for motorcycle, etc. |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5920781A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS62199849A (en) * | 1986-02-27 | 1987-09-03 | 株式会社豊田自動織機製作所 | Weft yarn storage apparatus in shuttleless loom |
| GB2501896A (en) * | 2012-05-09 | 2013-11-13 | Uk Sport | Aerodynamic fork |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0387498U (en) * | 1989-12-26 | 1991-09-05 |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3718345A (en) * | 1970-12-28 | 1973-02-27 | R Bringman | Stabilizing apparatus |
| JPS5752379U (en) * | 1980-09-10 | 1982-03-26 |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CA1036286A (en) * | 1973-04-03 | 1978-08-08 | Uniroyal | 1,2,3,4,9,9-hexachloro-1,4-dihydro-1,4-methanonaphthalene-5,8-diols as flame retardants for polymers |
-
1982
- 1982-07-27 JP JP13100282A patent/JPS5920781A/en active Granted
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3718345A (en) * | 1970-12-28 | 1973-02-27 | R Bringman | Stabilizing apparatus |
| JPS5752379U (en) * | 1980-09-10 | 1982-03-26 |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS62199849A (en) * | 1986-02-27 | 1987-09-03 | 株式会社豊田自動織機製作所 | Weft yarn storage apparatus in shuttleless loom |
| GB2501896A (en) * | 2012-05-09 | 2013-11-13 | Uk Sport | Aerodynamic fork |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6319397B2 (en) | 1988-04-22 |
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