JP2008024226A - Front fender of motorcycle - Google Patents

Front fender of motorcycle Download PDF

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Publication number
JP2008024226A
JP2008024226A JP2006200841A JP2006200841A JP2008024226A JP 2008024226 A JP2008024226 A JP 2008024226A JP 2006200841 A JP2006200841 A JP 2006200841A JP 2006200841 A JP2006200841 A JP 2006200841A JP 2008024226 A JP2008024226 A JP 2008024226A
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Prior art keywords
fender
fork
reinforcing member
motorcycle
side extension
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JP2006200841A
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JP5021971B2 (en
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Seiji Hagio
清二 萩尾
Hideaki Kawai
秀明 川井
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Kawasaki Heavy Industries Ltd
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Kawasaki Heavy Industries Ltd
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Abstract

<P>PROBLEM TO BE SOLVED: To provide a front fender of a motorcycle which is easily manufactured while capable of ensuring the strength and enhancing the appearance. <P>SOLUTION: The front fender has a fender body 31 for covering an upper portion of a front wheel 2, and a side extension body 32 extending downwardly from right and left sides of the fender body 31 as an integrated product. The side extension body 32 comprises a fork cover part 34 for covering a front fork 11, a mounted part 35 to be mounted on a fender mounting stay 29 of the front fork 11. A part in a vicinity of an intersection part P1 of right and left edges 31a of the fender body 31 and a front edge 35a of the side extension body 32 has a backwardly recessed shape in side view. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

本発明は、自動二輪車のフロントフェンダーに関し、特に、フロントフォークを覆うフォークカバー部を備えた自動二輪車のフロントフェンダーに関する。   The present invention relates to a motorcycle front fender, and more particularly, to a motorcycle front fender having a fork cover portion that covers a front fork.

図13及び図14は、自動二輪車の従来のフロントフェンダーを示しており、フロントフェンダー300は、前車輪308の上部を覆うフェンダー本体301と、該フェンダー本体301の左右側部から下方に延びる側方延長体302と、を一体成形物として備えている。側方延長体302は、フロントフォーク310の前方を覆うフォークカバー部304と、該フォークカバー部304の前側に形成された被取付部303を有している。フロントフォーク310の下端部のアクスルブラケット313には、フロントフォーク310の前面に沿って上方に延びる取付ステー315が設けられ、該取付ステー315に前記被取付部303が上下一対のボルト305により締着されている。フロントフォーク310は、たとえば外筒312内に下方から内筒311を挿入した倒立型であり、下側の内筒311をフォークカバー部304により前方から覆っている。   FIGS. 13 and 14 show a conventional front fender of a motorcycle. The front fender 300 includes a fender body 301 that covers an upper portion of a front wheel 308, and lateral sides that extend downward from the left and right sides of the fender body 301. The extension body 302 is provided as an integral molded product. The lateral extension 302 has a fork cover portion 304 that covers the front of the front fork 310 and a mounted portion 303 that is formed on the front side of the fork cover portion 304. The axle bracket 313 at the lower end of the front fork 310 is provided with a mounting stay 315 extending upward along the front surface of the front fork 310, and the mounted portion 303 is fastened to the mounting stay 315 by a pair of upper and lower bolts 305. Has been. The front fork 310 is an inverted type in which, for example, an inner cylinder 311 is inserted into the outer cylinder 312 from below, and the lower inner cylinder 311 is covered from the front by a fork cover portion 304.

図15は、自動二輪車の従来のフロントフェンダーの別の例(特許文献1)を示しており、フロントフェンダー400は、前車輪408の上部を覆うフェンダー本体401と、該フェンダー本体401とは別体に形成された左右一対の取付部材402とから構成され、該取付部材402には、フロントフォーク410を前方から覆うフォークカバー部404が形成されている。フェンダー本体401は、取付部材402の外周円弧部分に、複数のボルト49により取り付けられている。フロントフォーク410は、前記図13及び図14のフロントフォークと同様、外筒412内に下方から内筒411を挿入した倒立型であり、前記内筒411をフォークカバー部404により前方から覆っている。フロントフォーク410の下端部のアクスルブラケット413には、フロントフォーク410の前面に沿って上方に延びる取付ステー415が設けられ、該取付ステー415にフォークカバー部404がボルト407により締着されている。
特開2004−338428号公報
FIG. 15 shows another example of a conventional front fender for a motorcycle (Patent Document 1). A front fender 400 includes a fender body 401 that covers the upper part of the front wheel 408, and a separate body from the fender body 401. The mounting member 402 is formed with a fork cover portion 404 that covers the front fork 410 from the front. The fender body 401 is attached to the outer peripheral arc portion of the attachment member 402 with a plurality of bolts 49. The front fork 410 is an inverted type in which an inner cylinder 411 is inserted into the outer cylinder 412 from below, similarly to the front fork of FIGS. 13 and 14, and the inner cylinder 411 is covered from the front by a fork cover portion 404. . The axle bracket 413 at the lower end portion of the front fork 410 is provided with a mounting stay 415 extending upward along the front surface of the front fork 410, and the fork cover portion 404 is fastened to the mounting stay 415 with bolts 407.
JP 2004-338428 A

図13及び図14の従来例のように、フォークカバー部304と被取付部303とを、フェンダー本体301と一体成形しているフロントフェンダー300では、部品点数を少なくできると共に製造工程も少なくすることができる。しかし、フェンダー成形用の型の製作の容易性並びに側方延長体302とフェンダー本体301との連結部分の強度を考慮すると、側方延長体302は、側面視で、フェンダー本体301の前端から後端に至る広い範囲の裾野を有する山形状に形成しなければならず、そのため、フェンダー本体301の前端近傍から被取付部303の下端近傍に至るまでの範囲S1に、壁部が一体に形成されている。このような余分な範囲S1に壁部が形成されると、自動二輪車としての良好な外観を保つことができず、デザイン上の制約が大きくなる。また、走行時の空気抵抗が大きくなる。   In the front fender 300 in which the fork cover portion 304 and the attached portion 303 are integrally formed with the fender body 301 as in the conventional example of FIGS. 13 and 14, the number of parts can be reduced and the manufacturing process can be reduced. Can do. However, considering the ease of manufacturing the mold for fender molding and the strength of the connecting portion between the side extension body 302 and the fender body 301, the side extension body 302 is rear side from the front end of the fender body 301 in a side view. It must be formed in a mountain shape having a wide range of skirts reaching the end, and therefore, the wall portion is integrally formed in the range S1 from the vicinity of the front end of the fender body 301 to the vicinity of the lower end of the attached portion 303. ing. If the wall portion is formed in such an extra range S1, a good appearance as a motorcycle cannot be maintained, and design restrictions are increased. In addition, the air resistance during running increases.

一方、図15の従来例のように、フェンダー本体401と、左右の取付部材402(フォークカバー部404を含む)とを、別部材により構成していると、フロントフェンダー400の組付作業に手間がかかると共に、複数のボルト409が外部に露出し、自動二輪車として良好な外観を保つことができない。また、フェンダー本体401と左右の取付部材402との組付精度も厳しく要求される。   On the other hand, if the fender body 401 and the left and right mounting members 402 (including the fork cover portion 404) are configured as separate members as in the conventional example of FIG. 15, it takes time to assemble the front fender 400. In addition, a plurality of bolts 409 are exposed to the outside, and a good appearance as a motorcycle cannot be maintained. Further, the assembling accuracy between the fender body 401 and the left and right attachment members 402 is also strictly required.

本発明は前記課題に鑑みてなされたものであり、製造が容易で、良好な外観及び強度を維持できる自動二輪車のフロントフェンダーを提供することを目的としている。   The present invention has been made in view of the above problems, and an object of the present invention is to provide a front fender of a motorcycle that is easy to manufacture and can maintain a good appearance and strength.

上記課題を解決するために本発明は、前車輪の少なくとも一部を覆うフェンダー本体と、該フェンダー本体の左右側部から下方へ延びる側方延長体とを、一体成形物として備え、前記側方延長体は、フロントフォークの少なくとも一部を覆うフォークカバー部と、前記フロントフォークのフェンダー取付部に取り付けられる被取付部と、を有し、前記フェンダー本体の左右側縁と前記側方延長体の前縁との交差部近傍は、側面視で後方へ凹む形状とし、前記側方延長体の前車輪側には補強部材を固着している。   In order to solve the above-mentioned problems, the present invention comprises a fender body that covers at least a part of a front wheel, and a lateral extension that extends downward from the left and right side portions of the fender body as an integrally molded product. The extension body has a fork cover portion that covers at least a part of the front fork, and a mounted portion that is attached to the fender attachment portion of the front fork, and the left and right side edges of the fender body and the side extension body The vicinity of the intersection with the front edge is shaped to be recessed rearward in a side view, and a reinforcing member is fixed to the front wheel side of the side extension.

上記構成によると、(1)フェンダー本体と、左右の被取付部と、左右のフォークカバー部とを、一体成形しているので、部品点数を少なくできると共に、製造及び組付が容易になる。   According to the above configuration, (1) since the fender body, the left and right attached parts, and the left and right fork cover parts are integrally formed, the number of parts can be reduced, and manufacture and assembly are facilitated.

(2)フェンダー本体の左右側縁と側方延長体の前縁との交差部近傍の形状が、側面視で後方に凹む形状となっているので、自動二輪車としての外観が向上すると共に、成形時において余分な壁部を形成する必要がなくなり、走行時の空気抵抗を減らすことができる。 (2) The shape in the vicinity of the intersection of the left and right side edges of the fender body and the front edge of the lateral extension body is recessed rearward in a side view, so that the appearance as a motorcycle is improved and molded. It is not necessary to form an extra wall part at the time, and the air resistance during traveling can be reduced.

(3)側方延長体の前車輪側に補強部材を固着しているので、外観を損なうことなく、強度を向上させることができる。特に、凹状の交差部分の強度(剛性)を向上させることができる。 (3) Since the reinforcing member is fixed to the front wheel side of the side extension body, the strength can be improved without impairing the appearance. In particular, the strength (rigidity) of the concave intersection can be improved.

前記自動二輪車のフロントフェンダーにおいて、前記補強部材は、前記フォークカバー部と共に、前記フロントフォークの筒体の少なくとも一部を覆う構造とすることができる。   In the front fender of the motorcycle, the reinforcing member may have a structure that covers at least a part of a cylinder of the front fork together with the fork cover portion.

上記構成によると、フェンダー本体と一体成形されるフォークカバー部の形状を複雑化することなく、フロントフォークを覆う面積を広げることができ、走行中に前方から飛散する小石や砂から効率良くフロントフォークを保護できる。   According to the above configuration, the area for covering the front fork can be expanded without complicating the shape of the fork cover part formed integrally with the fender body, and the front fork can be efficiently removed from pebbles and sand scattered from the front during traveling. Can be protected.

前記自動二輪車のフロントフェンダーにおいて、前記フロントフォークの筒体は、外筒と、該外筒内に下方から挿入された内筒とから構成し、前記フォークカバー部は前記内筒の少なくとも一部を覆う構造とすることができる。   In the front fender of the motorcycle, the cylinder body of the front fork is composed of an outer cylinder and an inner cylinder inserted into the outer cylinder from below, and the fork cover portion includes at least a part of the inner cylinder. It can be set as the structure covered.

上記構成によると、いわゆる倒立形のフロントフォークにおいて、外筒よりも外部からの保護が必要な内筒を、走行中に前方から飛散する小石等に対し、優先的に保護することができる。   According to the above configuration, in the so-called inverted front fork, the inner cylinder that needs to be protected from the outside rather than the outer cylinder can be preferentially protected against pebbles scattered from the front during traveling.

前記自動二輪車のフロントフェンダーにおいて、前記補強部材は、少なくとも一箇所を前記フェンダー本体又は前記側方延長体にボルトにより固着すると共に、前記ボルトの配置箇所とは別の箇所を、突起と孔との係合により位置決めすることができる。   In the front fender of the motorcycle, the reinforcing member is fixed to the fender body or the lateral extension by at least one place with a bolt, and a place different from the place where the bolt is arranged is a protrusion and a hole. It can be positioned by engagement.

上記構成によると、補強部材の取付用部品の数を減らすことができると共に、補強部材の取付時に、補強部材を側方延長体の所定の位置に簡単に取り付けることができる。   According to the said structure, while the number of the components for attachment of a reinforcement member can be reduced, a reinforcement member can be easily attached to the predetermined position of a side extension body at the time of attachment of a reinforcement member.

前記位置決め用の突起と孔を有する自動二輪車のフロントフェンダーにおいて、前記突起は、補強部材の取付用ボルト挿通孔の周縁に形成した環状突起とし、前記孔は、前記被取付部の取付用ボルト挿通孔とすることができる。   In the front fender of a motorcycle having the positioning protrusion and the hole, the protrusion is an annular protrusion formed at the periphery of the mounting bolt insertion hole of the reinforcing member, and the hole is an insertion bolt insertion of the mounting portion. It can be a hole.

上記構成によると、位置決め用の環状突起は、取付用ボルト挿通孔の成形時に、たとえばバーリング加工により簡単に形成することができ、また、位置決め専用の孔を新たに形成することもなく、加工に手間がかからない。   According to the above configuration, the positioning annular protrusion can be easily formed by, for example, burring when forming the mounting bolt insertion hole, and without forming a new positioning dedicated hole. It does not take time and effort.

図1〜図12は本発明にかかる自動二輪車のフロントフェンダーの一実施の形態であり、これらの図面に基づいて本発明の一実施の形態を詳細に説明する。   1 to 12 show one embodiment of a front fender of a motorcycle according to the present invention, and one embodiment of the present invention will be described in detail with reference to these drawings.

[自動二輪車の全体の概要]
図1は自動二輪車の左側面図であり、車体フレーム1には前車輪2と後車輪3との間にエンジン4が搭載され、車体フレーム1の上方には、前側から順にハンドルバー6、燃料タンク7、シート8、リヤシート9等が配置されている。前車輪2は、車体フレーム1の前端部のヘッドパイプ10にフロントフォーク11を介して左右操向自在に支持されている。後車輪3は、車体フレーム1のスイングアームブラケット部1aに、スイングアーム12を介して上下方向揺動自在に支持されている。
[Overview of the entire motorcycle]
FIG. 1 is a left side view of a motorcycle. An engine 4 is mounted on a body frame 1 between a front wheel 2 and a rear wheel 3. A handle bar 6 and a fuel are disposed above the body frame 1 in order from the front side. A tank 7, a seat 8, a rear seat 9, and the like are arranged. The front wheel 2 is supported on the head pipe 10 at the front end of the body frame 1 via a front fork 11 so as to be steerable left and right. The rear wheel 3 is supported by the swing arm bracket portion 1 a of the vehicle body frame 1 via a swing arm 12 so as to be swingable in the vertical direction.

フロントフォーク11は、外筒15aと内筒15bとからなる伸縮自在な筒体15を左右一対備えており、筒体15は、垂直な面に対して後傾姿勢に配置され、筒体15内には緩衝ばね及びオイル減衰機構が内蔵されている。該実施の形態では、フロントフォーク30として、いわゆる倒立型フロントフォークを備えており、外筒15a内に下方から内筒15bが挿入されている。このようなフロントフォーク11の左右の筒体15間に、前車輪2を覆うフロントフェンダー30が配置されている。   The front fork 11 includes a pair of left and right extendable cylinders 15 each including an outer cylinder 15a and an inner cylinder 15b. The cylinders 15 are disposed in a backward inclined posture with respect to a vertical plane, Has a built-in buffer spring and an oil damping mechanism. In this embodiment, a so-called inverted front fork is provided as the front fork 30, and the inner cylinder 15b is inserted into the outer cylinder 15a from below. A front fender 30 covering the front wheel 2 is disposed between the left and right cylinders 15 of the front fork 11.

左右の外筒15aの上部は、上下一対の操舵ブラケット17、18により結合されており、該操舵ブラケット17,18の左右幅の中央部には操舵軸(図示せず)が固着され、該操舵軸が、前記ヘッドパイプ10に回動自在に支持されている。上側の操舵ブラケット17には、締結金具20により前記ハンドルバー6が取り付けられている。左右の内筒15bの下端部にはアクスルブラケット21がそれぞれ固着されており、該アクスルブラケット21により前車軸22を回転自在に支持している。アクスルブラケット21には、後上方に延びるブレーキキャリパ支持部23が一体に形成され、該ブレーキキャリパ支持部23には前輪用のブレーキキャリパ24が取り付けられ、該ブレーキキャリパ24内のブレーキパッドにより、前車軸22に固着されたブレーキディスク25を挟圧するようになっている。   The upper portions of the left and right outer cylinders 15a are coupled by a pair of upper and lower steering brackets 17 and 18, and a steering shaft (not shown) is fixed to the center of the left and right widths of the steering brackets 17 and 18, and the steering A shaft is rotatably supported by the head pipe 10. The handle bar 6 is attached to the upper steering bracket 17 by a fastener 20. Axle brackets 21 are fixed to the lower end portions of the left and right inner cylinders 15b, respectively, and the front axle 22 is rotatably supported by the axle brackets 21. The axle bracket 21 is integrally formed with a brake caliper support portion 23 that extends rearward and upward. A brake caliper 24 for a front wheel is attached to the brake caliper support portion 23, and a brake pad in the brake caliper 24 The brake disc 25 fixed to the axle 22 is clamped.

「フロントフェンダーの構成]
図2は、図1の前車輪2及びフロントフェンダー30の左側面拡大図であり、フロントフォーク11の左右の筒体15間に配置されているフロントフェンダー30は、前車輪2の少なくとも一部を覆うフェンダー本体31と、該フェンダー本体31の左右側部から下方に延びる左右一対の側方延長体32とを、樹脂製の一体成形物として備えている。たとえばABS樹脂(アクリロニトリル、ブタジエン及びスチレンの共重合化合物)等で前記フェンダー本体31及び側方延長体32を形成している。該実施の形態では、フェンダー本体31は、前車輪2の上端より少し前方位から後部にかけて、径方向の外方から前車輪2を覆う形状となっているが、前車輪2の前端部近傍位置から後端位置まで覆うような形状を有するフェンダー本体31を採用することもでき、その他、自動二輪車の種類に応じて、前車輪2を覆う範囲は変更可能である。側方延長体32は、内筒15bの少なくとも一部を前方及び側方から覆うフォークカバー部34と、該フォークカバー部34の前端から前方に延設された被取付部35とを有している。フロントフォーク11の下端のアクスルブラケット21には、内筒15bの前方を上方に延びる取付ステー29が一体に形成されており、該取付ステー29に、側方延長体32の被取付部35が、上下一対のフェンダー取付用のボルト36により取り付けられている。また、フロントフェンダー30は、前記フェンダー本体31と側方延長体32との一体成形物に加え、左右の側方延長体32の裏面側(前車輪側)に、金属製の補強部材33が着脱自在に固着されている。
“Configuration of front fender”
FIG. 2 is an enlarged left side view of the front wheel 2 and the front fender 30 of FIG. 1. The front fender 30 disposed between the left and right cylinders 15 of the front fork 11 includes at least a part of the front wheel 2. A fender body 31 to be covered and a pair of left and right side extending bodies 32 extending downward from the left and right side portions of the fender body 31 are provided as an integrally molded product made of resin. For example, the fender body 31 and the side extension 32 are formed of ABS resin (a copolymer compound of acrylonitrile, butadiene and styrene) or the like. In this embodiment, the fender body 31 has a shape that covers the front wheel 2 from the outside in the radial direction from the front direction to the rear part slightly from the upper end of the front wheel 2. The fender body 31 having a shape that covers from the rear end position to the rear end position can also be adopted, and the range covering the front wheels 2 can be changed according to the type of the motorcycle. The lateral extension 32 has a fork cover part 34 that covers at least a part of the inner cylinder 15b from the front and the side, and a mounted part 35 that extends forward from the front end of the fork cover part 34. Yes. The axle bracket 21 at the lower end of the front fork 11 is integrally formed with an attachment stay 29 that extends upward in front of the inner cylinder 15b, and the attached portion 35 of the side extension 32 is attached to the attachment stay 29. It is attached by a pair of upper and lower fender mounting bolts 36. Further, the front fender 30 has a metal reinforcing member 33 attached to and detached from the back side (front wheel side) of the left and right side extension bodies 32 in addition to the integrally formed product of the fender body 31 and the side extension bodies 32. It is fixed freely.

(フェンダー本体31及び側方延長体32の詳細な形状)
図2において、フェンダー本体31の上端は、前車輪2の外周端形状に略沿った円弧状に形成されており、フェンダー本体31の前部の左右側縁31aは、フェンダー本体31の前端から略水平直線状に後方に延びると共に、途中から側方延長体32との交差部P1に至るまで後下がりに傾斜している。フェンダー本体31の後部の左右側縁31bは、フェンダー本体31の後端から側面視で前上方に湾曲し、前上方に延びると共に途中から前下がりに傾斜し、側方延長体32に至っている。
(Detailed shapes of the fender body 31 and the side extension body 32)
In FIG. 2, the upper end of the fender body 31 is formed in an arc shape substantially along the outer peripheral end shape of the front wheel 2, and the left and right side edges 31 a of the front portion of the fender body 31 are substantially from the front end of the fender body 31. It extends rearward in a horizontal straight line, and inclines downward from the middle to the intersection P1 with the side extension 32. The left and right side edges 31b of the rear part of the fender main body 31 are curved forward and upward from the rear end of the fender main body 31 and extend frontward and upward, and incline forward and downward from the middle to the side extension 32.

左右の側方延長体32は、フェンダー本体31の左右側部からフロントフォーク11の内筒15bと略平行に(後傾姿勢)で下方に延びている。   The left and right side extension bodies 32 extend downward from the left and right side portions of the fender body 31 substantially in parallel with the inner cylinder 15b of the front fork 11 (backward tilting posture).

フォークカバー部34は部分円筒状に形成されており、上端部の大径部34aと、該大径部34aの下端につながると共に下方に向いて小径となるテーパー部34bと、該テーパー部34bの下端につながると共に内筒15bに沿って下方に延びる小径部34cとから構成されている。大径部34aは略半円筒状に形成され、内筒15bの上端部の前半部を前方及び側方から覆っており、外筒15aの下端部を十分に収納できる寸法(半径)となっている。テーパー部34bと小径部34cとは、概ね四半円筒状に形成され、内筒15bの前車輪側とは反対側の前半部を前方及び側方から覆っている。   The fork cover part 34 is formed in a partial cylindrical shape, and has a large diameter part 34a at the upper end part, a tapered part 34b that is connected to the lower end of the large diameter part 34a and has a smaller diameter toward the lower part, and the tapered part 34b. The small diameter part 34c is connected to the lower end and extends downward along the inner cylinder 15b. The large-diameter portion 34a is formed in a substantially semi-cylindrical shape, covers the front half of the upper end portion of the inner cylinder 15b from the front and sides, and has a size (radius) that can sufficiently accommodate the lower end portion of the outer cylinder 15a. Yes. The tapered portion 34b and the small-diameter portion 34c are formed in a substantially quarter-cylindrical shape, and cover the front half of the inner cylinder 15b opposite to the front wheel side from the front and side.

前記テーパー部34bの前端部が、フェンダー本体31の側縁31aと側方延長体32の前縁35aとの交差部P1となっている。該交差部P1の近傍は、フェンダー本体31の前部の左右側縁31aから被取付部35の前縁35aに亘り、後方に凹む形状になっている。すなわち、側方延長体32の交差部P1の近傍は後方に括れた形状となっており、交差部P1の前方には、側面視で後方へ湾曲する空間部S2が形成されている。   The front end portion of the tapered portion 34b is an intersection P1 between the side edge 31a of the fender body 31 and the front edge 35a of the side extension body 32. The vicinity of the intersection P1 has a shape that is recessed backward from the left and right side edges 31a of the front part of the fender body 31 to the front edge 35a of the attached part 35. That is, the vicinity of the intersection P1 of the lateral extension body 32 has a shape constricted rearward, and a space S2 that curves backward in a side view is formed in front of the intersection P1.

図5は、フェンダー本体31と側方延長体32との一体成形物の左側面拡大図であり、被取付部35には上下に間隔をおいて一対の凹部40が形成されており、該凹部40は前車輪側に凹むと共に、該凹部40の底面にそれぞれボルト挿通孔41が形成されている。   FIG. 5 is an enlarged left side view of an integrally molded product of the fender body 31 and the side extension body 32, and a pair of recesses 40 are formed in the attached portion 35 with a space in the vertical direction. 40 is recessed on the front wheel side, and a bolt insertion hole 41 is formed on the bottom surface of the recess 40.

図6は、フェンダー本体31と側方延長体32との一体成形物の正面図(図5の正面図)であり、フォークカバー部34の大径部34a及びテーパー部34bの近傍には、フェンダー本体31に連結する連結壁43が形成されており、該連結壁43には、補強部材取付孔44がそれぞれ形成されている。   FIG. 6 is a front view (a front view of FIG. 5) of an integrally molded product of the fender body 31 and the side extension body 32. In the vicinity of the large-diameter portion 34a and the tapered portion 34b of the fork cover portion 34, A connecting wall 43 connected to the main body 31 is formed, and a reinforcing member mounting hole 44 is formed in the connecting wall 43.

(補強部材の形状)
図7は左側の補強部材33の左側面図、図8は図7のVIII矢視図、図9は補強部材33の上端部の縦断面拡大図、図10及び図11は、図2のX-X、XI-XI断面図である。図7において、補強部材33の前半部33aには、上下に間隔おいて一対のボルト挿通孔51が形成されており、下側のボルト挿通孔51の周縁には、図8に示すように前車輪側と反対側に突出する環状突起52がバーニング加工により一体に形成されている。一方、補強部材33の後半部33bは水平断面が円弧状に形成されており、該円弧状の後半部33bは、図10及び図11に示すように、側方延長体32のフォークカバー部34から前車輪側に延長するように形成されており、内筒15bの前車輪側の部分を前方から覆っている。すなわち、側方延長体32のフォークカバー部34と、補強部材33の円弧状後半部33bにより、フロントフォーク11の内筒15bの略全面を前方から覆っている。
(Reinforcing member shape)
7 is a left side view of the left reinforcing member 33, FIG. 8 is a view taken along arrow VIII in FIG. 7, FIG. 9 is an enlarged longitudinal sectional view of the upper end portion of the reinforcing member 33, and FIGS. FIG. In FIG. 7, a pair of bolt insertion holes 51 are formed in the front half portion 33a of the reinforcing member 33 at an interval in the vertical direction, and at the periphery of the lower bolt insertion hole 51, as shown in FIG. An annular protrusion 52 that protrudes on the side opposite to the wheel side is integrally formed by burning. On the other hand, the rear half part 33b of the reinforcing member 33 is formed in an arc shape in the horizontal section, and the arc-like rear half part 33b is formed in the fork cover part 34 of the lateral extension body 32 as shown in FIGS. Is formed so as to extend from the front side to the front wheel side, and covers the front wheel side portion of the inner cylinder 15b from the front side. That is, the fork cover part 34 of the side extension 32 and the arc-shaped rear half part 33b of the reinforcing member 33 cover substantially the entire surface of the inner cylinder 15b of the front fork 11 from the front.

(補強部材33及び側方延長体32の取付構造)
図9は補強部材33の上端部の縦断面図であり、補強部材33の上端部には、ナット61が溶接により固着されており、前記連結壁43の補強部材取付孔44に前方から挿入されたボルト60をナット61に螺着することにより、補強部材33の上端部を連結壁43に固着している。補強部材33の前半部33aは、図10及び図11に示すように、側方延長体32の被取付部35と共に、上下一対の前記フェンダー取付用のボルト36により、前記取付ステー29に固着されている。
(Mounting structure of the reinforcing member 33 and the side extension 32)
FIG. 9 is a longitudinal sectional view of the upper end portion of the reinforcing member 33. A nut 61 is fixed to the upper end portion of the reinforcing member 33 by welding, and is inserted into the reinforcing member mounting hole 44 of the connecting wall 43 from the front. The upper end portion of the reinforcing member 33 is fixed to the connecting wall 43 by screwing the bolt 60 to the nut 61. As shown in FIGS. 10 and 11, the front half 33 a of the reinforcing member 33 is fixed to the mounting stay 29 by a pair of upper and lower fender mounting bolts 36 together with the mounted portion 35 of the lateral extension body 32. ing.

図10及び図11において、取付ステー29には、上下一対のフェンダー取付孔64が形成されると共に、各フェンダー取付孔64の裏面側(前車輪側)には、ナット65が溶接により固着されている。フェンダー取付用の上下一対のボルト36を、被取付部35のボルト挿通孔41、補強部材33のボルト挿通孔51及び取付ステー20のフェンダー取付孔64に挿通し、ナット65に螺着することにより、側方延長体32の被取付部35と補強部材33とを、取付ステー29に共締めしているのである。なお、前記ナット65は、取付ステー29に溶接せずに用いることも可能である。   10 and 11, a pair of upper and lower fender mounting holes 64 are formed in the mounting stay 29, and a nut 65 is fixed to the back side (front wheel side) of each fender mounting hole 64 by welding. Yes. By inserting a pair of upper and lower bolts 36 for fender attachment into the bolt insertion hole 41 of the attached portion 35, the bolt insertion hole 51 of the reinforcing member 33, and the fender attachment hole 64 of the attachment stay 20, and screwing to the nut 65. The attached portion 35 and the reinforcing member 33 of the side extension body 32 are fastened to the attachment stay 29 together. The nut 65 can be used without being welded to the mounting stay 29.

(補強部材33及び側方延長体32の取付順序)
(1)まず、図3に示すように、補強部材33をフェンダー本体31及び側方延長体32との一体成形物に取り付ける。すなわち、補強部材33の上端部をフェンダー本体31の連結壁43に固定するが、この作業において、補強部材33の下側のボルト挿通孔51の環状突起部(バーニング加工部)52を、被取付部35の下側のボルト挿通孔41に嵌合することにより、側方延長体32に対して補強部材33を所定位置に位置決めする。すなわち、補強部材33の上下のボルト挿通孔51が被取付孔35の上下のボルト挿通孔41に対応した位置に固定されるように位置決めしておく。
(Attaching order of the reinforcing member 33 and the side extension 32)
(1) First, as shown in FIG. 3, the reinforcing member 33 is attached to an integrally molded product of the fender body 31 and the side extension body 32. That is, the upper end portion of the reinforcing member 33 is fixed to the connecting wall 43 of the fender body 31. In this operation, the annular protrusion (burning portion) 52 of the bolt insertion hole 51 on the lower side of the reinforcing member 33 is attached. The reinforcing member 33 is positioned at a predetermined position with respect to the lateral extension body 32 by fitting into the bolt insertion hole 41 on the lower side of the portion 35. In other words, the upper and lower bolt insertion holes 51 of the reinforcing member 33 are positioned so as to be fixed at positions corresponding to the upper and lower bolt insertion holes 41 of the attached hole 35.

(2)補強部材33を側方延長体32に仮止めした後、図2に示すように側方延長体32の被取付部35を、アクスルブラケット21の取付ステー29に重ね合わせ、上下のフェンダー取付用のボルト36により、補強部材33と側方延長体32とを、取付ステー29に共締めする。 (2) After the reinforcing member 33 is temporarily fixed to the side extension body 32, the attached portion 35 of the side extension body 32 is overlapped with the attachment stay 29 of the axle bracket 21, as shown in FIG. The reinforcing member 33 and the side extension 32 are fastened to the mounting stay 29 together with the mounting bolts 36.

(フェンダー本体31と側方延長体32との一体成形物の成形方法)
図6において、フェンダー本体31と側方延長体32との一体成形物は、フェンダー本体31の上面及び側方延長体32の外側面(前車輪側とは反対側)を成形する上型D1と、フェンダー本体31の下面と側方延長体32の内側面(前車輪側の面)を成形する下型D2と、フォークカバー部34の内部等を成形する幾つかのスライド中子(図示せず)により成形される。なお、上型D1と下側D2と称しているが、これは取付状態のフロントフェンダー30の上下に対応させた呼び方であり、実際の成形時には上型D1を下側に配置し、下型D2を上側に配置して、成形する場合もある。
(Method of forming an integrally molded product of the fender body 31 and the side extension 32)
In FIG. 6, the integrally molded product of the fender body 31 and the side extension body 32 is an upper mold D1 that molds the upper surface of the fender body 31 and the outer surface of the side extension body 32 (the side opposite to the front wheel side). The lower die D2 for molding the lower surface of the fender body 31 and the inner side surface (front wheel side surface) of the side extension 32, and several slide cores for molding the interior of the fork cover portion 34 and the like (not shown) ). The upper mold D1 and the lower D2 are referred to as upper and lower sides of the attached front fender 30. In actual molding, the upper mold D1 is arranged on the lower side, and the lower mold is used. In some cases, D2 is disposed on the upper side and molded.

図5の矢印K1、K2は上型D1と下型D2の抜き方向を示しており、抜き方向K1、K2は、フォークカバー部34のテーパー部34bの前端部P1の前縁の傾斜方向に沿った方向に設定されている。   The arrows K1 and K2 in FIG. 5 indicate the direction in which the upper mold D1 and the lower mold D2 are pulled out. The pulling directions K1 and K2 are along the inclination direction of the front edge of the front end portion P1 of the tapered portion 34b of the fork cover portion 34. The direction is set.

図12は、型成形時の図5のXII-XII断面拡大図であり、後方に凹む空間S2を囲むフェンダー本体31の前部の側縁31aと、側方延長体32の前縁35aとは、左右方向に所定間隔L1を有するように形成されており、これにより、上下の型D1、D2は、型強度を低下させるような薄肉部等を有しない形状とすることができる。すなわち、上下の型D1,D2の製作に手間がかからず、しかも、フェンダー本体31と側方延長体32との一体成形物を容易に成形することができる。   12 is an enlarged cross-sectional view taken along the line XII-XII of FIG. 5 at the time of molding. The front side edge 31a of the fender body 31 surrounding the space S2 recessed rearward and the front edge 35a of the side extension 32 are shown. The upper and lower molds D1 and D2 can be formed to have a shape that does not have a thin portion or the like that lowers the mold strength. That is, it takes less time to manufacture the upper and lower molds D1 and D2, and it is possible to easily form an integrally molded product of the fender body 31 and the side extension body 32.

(実施の形態における効果)
(1)図12のように、後方へ凹む空間S2を囲むフェンダー本体31の前部の側縁31aと、側方延長体32の前縁35aとを、左右方向に所定間隔L1を有するように形成することにより、図10及び図11のように、フォークカバー部34の小径部34cによりフロントフォーク11の内筒15bを覆う面積は狭くなるが、補強部材33をフォークカバー部34の補完部材として利用することにより、内筒15bの大部分を前方及び側方から覆うことができ、内筒の保護機能を保つことができる。
(Effect in embodiment)
(1) As shown in FIG. 12, the front side edge 31a of the fender body 31 surrounding the space S2 recessed backward and the front edge 35a of the lateral extension body 32 have a predetermined interval L1 in the left-right direction. As a result, the area of the inner cylinder 15b of the front fork 11 covered by the small diameter portion 34c of the fork cover portion 34 is reduced as shown in FIGS. 10 and 11, but the reinforcing member 33 is used as a complementary member of the fork cover portion 34. By using it, most of the inner cylinder 15b can be covered from the front and the side, and the protection function of the inner cylinder can be maintained.

(2)図2のように、フェンダー本体31と側方延長体32との交差部P1が後方に括れるように形成することにより、交差部P1の前方に、後方へ凹む空間部S2を形成しているので、図13及び図14のような余分な壁部(範囲S1)を省くことができ、外観が向上すると共に、走行中における空気抵抗を減らすこともできる。しかも、後方へ凹む空間部S2を形成したことに対し、側方延長体32の裏面側(前車輪側)に補強部材33を固着しているので、外観を損なうことなく、フロントフェンダー30の強度(剛性)を高く維持することができる。 (2) As shown in FIG. 2, by forming the intersecting portion P1 between the fender body 31 and the side extension body 32 so as to be constricted rearward, a space portion S2 recessed backward is formed in front of the intersecting portion P1. Therefore, an extra wall portion (range S1) as shown in FIGS. 13 and 14 can be omitted, the appearance can be improved, and the air resistance during traveling can be reduced. Moreover, since the reinforcing member 33 is fixed to the back surface side (front wheel side) of the lateral extension body 32 in contrast to the formation of the space portion S2 that is recessed rearward, the strength of the front fender 30 is maintained without impairing the appearance. (Rigidity) can be kept high.

(3)図4に示すように、補強部材33を側方延長体32に取り付ける構造として、補強部材33の上端部の一箇所のみを、補強部材専用のボルト60により連結壁43に固着し、図10及び図11に示すように、前半部33aの2箇所のボルト挿通孔51の部分は、側方延長体32の被取付部35との共締めにより、アクスルブラケット21の取付ステー29に取り付けているので、補強部材専用の固定部材を削減することができる。 (3) As shown in FIG. 4, as a structure for attaching the reinforcing member 33 to the lateral extension body 32, only one portion of the upper end portion of the reinforcing member 33 is fixed to the connecting wall 43 with the bolt 60 dedicated to the reinforcing member, As shown in FIGS. 10 and 11, the two bolt insertion holes 51 of the front half 33 a are attached to the attachment stay 29 of the axle bracket 21 by tightening together with the attached portion 35 of the side extension 32. As a result, the number of fixing members dedicated to the reinforcing member can be reduced.

(4)また、図7に示すように、補強部材33の2箇所のボルト挿通孔51のうち、一つのボルト挿通孔51の周縁にバーニング加工による環状突起52を形成し、図3に示すように、該環状突起52を側方延長体32のボルト挿通孔41に嵌合することにより、側方延長体32に対する補強部材33の位置決めをしているので、補強部材33を、側方延長体32の所定の位置及び所定の姿勢に、簡単に取り付けることができ、補強部材33の取付作業に手間がかからない。 (4) Further, as shown in FIG. 7, an annular projection 52 is formed by burning on the periphery of one bolt insertion hole 51 out of the two bolt insertion holes 51 of the reinforcing member 33, as shown in FIG. In addition, the reinforcing member 33 is positioned with respect to the side extension body 32 by fitting the annular protrusion 52 into the bolt insertion hole 41 of the side extension body 32. It can be easily attached to the predetermined position and the predetermined posture of 32, and the attaching work of the reinforcing member 33 does not take time.

[その他の実施の形態]
(1)前記実施の形態では、補強部材33を鉄等の金属製としているが、硬質樹脂で成形することも可能である。
[Other embodiments]
(1) Although the reinforcing member 33 is made of metal such as iron in the above embodiment, it can be formed of hard resin.

(2)前記実施の形態は、フロントフォーク30として、外筒15aの下方から内筒15bを挿入する倒立型フロントフォークを備えた自動二輪車に適用しているが、外筒の上方から内筒を挿入する正立型フロントフォークを備えた自動二輪車に適用することも可能である。この場合は、フロントフェンダーのフォークカバー部は、下側の外筒の少なくとも一部を前方及び側方から保護することになり、また、取付ステー29は下側の外筒に直接形成されることになる。 (2) In the above embodiment, the front fork 30 is applied to a motorcycle provided with an inverted front fork into which the inner cylinder 15b is inserted from the lower side of the outer cylinder 15a. It can also be applied to a motorcycle having an upright front fork to be inserted. In this case, the fork cover portion of the front fender protects at least a part of the lower outer cylinder from the front and sides, and the mounting stay 29 is formed directly on the lower outer cylinder. become.

(3)前記実施の形態では、図2のように、側方延長体32の被取付部35が、フォークカバー部34の前側に一体成形された構造となっているが、フォークカバー部34の前車輪側とは反対側に被取付部を形成し、アクスルブラケット21の取付ステー29を、内筒15bの外側(前車輪を反対側)に形成する構造とすることも可能である。 (3) In the above-described embodiment, as shown in FIG. 2, the attached portion 35 of the lateral extension body 32 is integrally formed on the front side of the fork cover portion 34. It is also possible to adopt a structure in which a mounted portion is formed on the side opposite to the front wheel side, and the mounting stay 29 of the axle bracket 21 is formed outside the inner cylinder 15b (the front wheel is on the opposite side).

(4)本発明は、前記各種実施の形態には限定されず、特許請求の範囲に記載した範囲内において、各種変形例が含まれる。特に、フェンダー本体31の側縁31aと側方延長体32との交差部P1の近傍における後方に凹む形状とは、たとえば図3の仮想線35’aで示すように、被取付部35の前縁35’aが略一直線状に後上方に延びてフェンダー本体31の側縁31aに交わる構造も含むものである。また、フロントフェンダー30は、前記実施の形態では、前車輪2の上端部より少し前方位置から、フロントフォーク11の側方と通過して前車輪2の斜め後上方位置までを覆う構造であるが、このような構造には限定されず、たとえば前車輪2の上半部を上方から覆う構造とすることも可能である。 (4) The present invention is not limited to the various embodiments described above, and includes various modifications within the scope described in the claims. In particular, the shape recessed backward in the vicinity of the intersection P1 between the side edge 31a of the fender body 31 and the side extension 32 is, for example, the front of the attached portion 35 as shown by a virtual line 35'a in FIG. It also includes a structure in which the edge 35 ′ a extends substantially rearward and upward and intersects with the side edge 31 a of the fender body 31. In the embodiment, the front fender 30 is configured to cover a position slightly forward from the upper end portion of the front wheel 2 to the side of the front fork 11 and the oblique rear upper position of the front wheel 2. The structure is not limited to such a structure, and for example, a structure that covers the upper half of the front wheel 2 from above can be used.

本発明の一実施の形態のフロントフェンダーを備えた自動二輪車の左側面図である。1 is a left side view of a motorcycle including a front fender according to an embodiment of the present invention. 図1のフロントフェンダー及び前車輪の左側面拡大図である。FIG. 2 is an enlarged left side view of a front fender and a front wheel in FIG. 1. フロントフェンダーの左側面図である。It is a left view of a front fender. フロントフェンダーの正面図である。It is a front view of a front fender. フェンダー本体及び側方延長体との一体成形物の左側拡大図である。It is a left side enlarged view of the integral molding with a fender main body and a side extension body. フェンダー本体及び側方延長体との一体成形物の左側拡大図である。It is a left side enlarged view of the integral molding with a fender main body and a side extension body. 図3の左側の補強部材の左側面図である。FIG. 4 is a left side view of the left reinforcing member in FIG. 3. 図7の補強部材のVIII矢視図である。It is a VIII arrow directional view of the reinforcing member of FIG. 図7の補強部材の取付状態を示す上端部の縦断面拡大図である。It is a longitudinal cross-sectional enlarged view of the upper end part which shows the attachment state of the reinforcement member of FIG. 側方延長体及び補強部材の図2のX-X断面図である。It is XX sectional drawing of FIG. 2 of a side extension body and a reinforcement member. 側方延長体及び補強部材の図2のXI-XI断面図である。It is a XI-XI sectional view of Drawing 2 of a side extension object and a reinforcing member. フェンダー本体及び側方延長体の成形時の状態を示す図5のXII-XII断面拡大図である。FIG. 6 is an enlarged cross-sectional view taken along the line XII-XII in FIG. 従来例の左側面図である。It is a left view of a prior art example. 図13のフロントフェンダーの左半分の正面図である。It is a front view of the left half of the front fender of FIG. 別の従来例の左側面図である。It is a left view of another prior art example.

符号の説明Explanation of symbols

1 車体フレーム
11 フロントフォーク
15 筒体
15a 外筒
15b 内筒
29 取付ステー
30 フロントフェンダー
31 フェンダー本体
31a フェンダー本体の側縁
32 側方延長体
33 補強部材
34 フォークカバー部
35 被取付部
35a 側方延長体(被取付部)の前縁
41 被取付部のボルト挿通孔
43 連結壁
44 補強部材取付孔
351 補強部材のボルト挿通孔
52 環状突起
60 補強部材取付用のボルト
DESCRIPTION OF SYMBOLS 1 Body frame 11 Front fork 15 Cylinder 15a Outer cylinder 15b Inner cylinder 29 Mounting stay 30 Front fender 31 Fender main body 31a Side edge 32 of fender main body Side extension body 33 Reinforcement member 34 Fork cover part 35 Mounted part 35a Side extension Front edge 41 of body (attached part) Bolt insertion hole 43 of attached part 43 Connecting wall 44 Reinforcement member attachment hole 351 Reinforcement member bolt insertion hole 52 Annular protrusion 60 Reinforcement member attachment bolt

Claims (5)

前車輪の少なくとも一部を覆うフェンダー本体と、該フェンダー本体の左右側部から下方へ延びる側方延長体とを、一体成形物として備え、
前記側方延長体は、フロントフォークの筒体の少なくとも一部を覆うフォークカバー部と、前記フロントフォークのフェンダー取付部に取り付けられる被取付部と、を有し、
前記フェンダー本体の左右側縁と前記側方延長体の前縁との交差部近傍は、側面視で後方へ凹む形状とし、
前記側方延長体の前車輪側には補強部材を固着していることを特徴とする自動二輪車のフロントフェンダー。
A fender body that covers at least a part of the front wheel, and a lateral extension that extends downward from the left and right side portions of the fender body, are provided as an integrally molded product.
The lateral extension includes a fork cover portion that covers at least a part of a front fork cylinder, and a mounted portion that is attached to a fender mounting portion of the front fork,
The vicinity of the intersection of the left and right side edges of the fender body and the front edge of the lateral extension body is shaped to be recessed backward in a side view,
A front fender of a motorcycle, wherein a reinforcing member is fixed to a front wheel side of the side extension body.
前記補強部材は、前記フォークカバー部と共に、前記フロントフォークの筒体の少なくとも一部を覆っていることを特徴とする請求項1記載の自動二輪車のフロントフェンダー。   2. The front fender of a motorcycle according to claim 1, wherein the reinforcing member covers at least a part of a cylinder of the front fork together with the fork cover portion. 前記筒体は、外筒と、該外筒内に下方から挿入される内筒とから構成され、前記フォークカバー部は前記内筒の少なくとも一部を覆っていることを特徴とする請求項1又は2記載の自動二輪車のフロントフェンダー。   The said cylinder is comprised from the outer cylinder and the inner cylinder inserted in this outer cylinder from the downward direction, The said fork cover part has covered at least one part of the said inner cylinder. Or the front fender of a motorcycle according to 2. 前記補強部材は、少なくとも一箇所を前記フェンダー本体又は側方延長体にボルトにより固着すると共に、前記ボルトの配置箇所とは別の箇所を、突起と孔との係合により位置決めしていることを特徴とする請求項1〜3のいずれかに記載の自動二輪車のフロントフェンダー。   The reinforcing member is fixed at least one place to the fender body or the lateral extension body with a bolt, and a position different from the place where the bolt is arranged is positioned by engagement between a protrusion and a hole. The front fender of a motorcycle according to any one of claims 1 to 3. 前記突起は、補強部材の取付用ボルト挿通孔の周縁に形成した環状突起であり、前記孔は、前記被取付部の取付用ボルト挿通孔であることを特徴とする請求項4記載の自動二輪車のフロントフェンダー。
The motorcycle according to claim 4, wherein the protrusion is an annular protrusion formed on a peripheral edge of a mounting bolt insertion hole of the reinforcing member, and the hole is a mounting bolt insertion hole of the mounted portion. Front fender.
JP2006200841A 2006-07-24 2006-07-24 Motorcycle front fender Expired - Fee Related JP5021971B2 (en)

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Cited By (4)

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Publication number Priority date Publication date Assignee Title
JP2009264484A (en) * 2008-04-24 2009-11-12 Honda Motor Co Ltd Disc brake cover structure
EP2759461A1 (en) * 2013-01-25 2014-07-30 Honda Motor Co., Ltd. Fork guard
JP2015085743A (en) * 2013-10-29 2015-05-07 スズキ株式会社 Reinforcement structure of front fender
JP2023051452A (en) * 2021-09-30 2023-04-11 本田技研工業株式会社 Saddle-riding type vehicle

Families Citing this family (1)

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CN106553721B (en) * 2015-09-28 2019-09-17 光阳工业股份有限公司 Bike fender structure

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JP2000159170A (en) * 1998-11-30 2000-06-13 Honda Motor Co Ltd Front fender mounting structure of motorcycle
JP2005306053A (en) * 2004-04-16 2005-11-04 Magical Racing Co Ltd Supporting structure of front mudguard of motorcycle

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JPS6422593U (en) * 1987-07-31 1989-02-06
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Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2009264484A (en) * 2008-04-24 2009-11-12 Honda Motor Co Ltd Disc brake cover structure
EP2759461A1 (en) * 2013-01-25 2014-07-30 Honda Motor Co., Ltd. Fork guard
JP2014141200A (en) * 2013-01-25 2014-08-07 Honda Motor Co Ltd Fork guard structure
JP2015085743A (en) * 2013-10-29 2015-05-07 スズキ株式会社 Reinforcement structure of front fender
JP2023051452A (en) * 2021-09-30 2023-04-11 本田技研工業株式会社 Saddle-riding type vehicle
JP7391923B2 (en) 2021-09-30 2023-12-05 本田技研工業株式会社 saddle type vehicle

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