WO2013121597A1 - Front fender structure in automatic two-wheeled vehicle - Google Patents

Front fender structure in automatic two-wheeled vehicle Download PDF

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Publication number
WO2013121597A1
WO2013121597A1 PCT/JP2012/061330 JP2012061330W WO2013121597A1 WO 2013121597 A1 WO2013121597 A1 WO 2013121597A1 JP 2012061330 W JP2012061330 W JP 2012061330W WO 2013121597 A1 WO2013121597 A1 WO 2013121597A1
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WO
WIPO (PCT)
Prior art keywords
fender
downfender
upfender
front wheel
pair
Prior art date
Application number
PCT/JP2012/061330
Other languages
French (fr)
Japanese (ja)
Inventor
光 横村
寛 竹中
吉田　直樹
高橋　敦彦
Original Assignee
本田技研工業株式会社
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by 本田技研工業株式会社 filed Critical 本田技研工業株式会社
Priority to JP2014500027A priority Critical patent/JP5806380B2/en
Priority to CN201280069763.0A priority patent/CN104114443B/en
Priority to AP2014007839A priority patent/AP2014007839A0/en
Publication of WO2013121597A1 publication Critical patent/WO2013121597A1/en
Priority to ZA2014/05536A priority patent/ZA201405536B/en

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62J—CYCLE SADDLES OR SEATS; AUXILIARY DEVICES OR ACCESSORIES SPECIALLY ADAPTED TO CYCLES AND NOT OTHERWISE PROVIDED FOR, e.g. ARTICLE CARRIERS OR CYCLE PROTECTORS
    • B62J15/00—Mud-guards for wheels

Definitions

  • a front fender covering the front wheel from above is supported by a front fork having a pair of left and right legs pivotally supporting the front wheel at a lower end portion so as to approach and separate from the front wheel and at least the front of the front fork And an upper fender covering the front wheel from above, and a lower front than the up fender so as to cover the front wheel from above at the rear of the front fork and the front fork being positioned at a constant vertical relative position to the front wheel
  • the present invention relates to improvement of a front fender structure.
  • a motorcycle having a front fender configured by an up fender covering the front wheel from above and a down fender covering the front wheel from below and behind the up fender is known from Patent Document 1.
  • the upfender is formed so as to cover the front wheel from above at the front of the leg of the front fork, and the downfender from above at the back of the leg of the front fork.
  • the upfender is supported by the front fork so that it can approach and move away from the front wheel
  • the downfender is supported by the front fork with a constant vertical relative position with respect to the front wheel.
  • the positional relationship between upfenders and downfenders is important in order to effectively reduce the splashing of mud to the passenger side.
  • consideration must be given to mutual interference between the rear of the upfender and the front of the downfender.
  • the present invention has been made in view of such circumstances, and it is possible to reduce the splashing of mud and water to the passenger side by the mutual function of the upfender and the downfender, or the mutual interaction of the upfender and the downfender.
  • An object of the present invention is to provide a front fender structure in a motorcycle that can avoid interference.
  • a front fender covering a front wheel from above is supported by a front fork having a pair of left and right legs pivotally supporting the front wheel at a lower end portion so as to approach and separate from the front wheel.
  • An upfender covering the front wheel from above at least in front of the front fork, and being disposed below the upfender so as to cover the front wheel from above at the back of the front fork and being vertically disposed relative to the front wheel In a motorcycle comprising a downfender supported by the front fork at a constant relative position, the upfender overlaps the front of the downfork so that the rear portion thereof is superimposed on the front of the downfender in plan view. And the above-mentioned upfender when getting on the passenger That the rear end bottom edge thereof so as to be positioned below the front upper edge of the down fender to the first aspect.
  • curved side wall portions which are recessed inward in the width direction so as to avoid the pair of left and right legs are provided on both left and right sides of the upfender.
  • the downfender has an arc-like cross-sectional shape that bulges upward, and a ceiling wall facing the front wheel from above as well as a pair of left and right side walls integrally provided on both left and right sides of the ceiling wall.
  • a second feature is that the relief recess is formed to be recessed rearward from the upper portion of the pair of left and right side wall portions to the ceiling wall portion.
  • a third feature is that a pair of recessed left and right recesses extend in the front-rear direction.
  • a projection projecting downward is provided on the lower surface of the front end portion of the downfender.
  • the present invention is fifthly characterized in that, in addition to the configuration of the fourth feature, the projection is constituted by a part of a stay for fixing the downfender to the leg portion of the front fork. .
  • the vehicle body frame is located behind the rear end of the upfender and above the rear end lower edge of the upfender in a side view
  • the sixth feature is that the electrical components are attached.
  • the downfender is formed such that a lower end lower edge thereof is positioned lower than the rotation axis of the front wheel. It is the feature of
  • the rear end of the downfender is formed so as to widen in the downward direction along the vehicle width direction. It is the feature of
  • a rib extending in the vehicle width direction is provided on the lower surface of the upfender in front of the downfender.
  • a wing-shaped straightening vane may be provided at a rear end portion of the downfender, projecting to both left and right sides from the downfender. It is the feature of
  • a louver having a plurality of slats in the straightening vane and a flow through hole formed between the slats is viewed from the front wheel side
  • An eleventh feature is that a slat is provided so as to be in a position covering the flow through hole.
  • a pair of left and right legs covering the pair of left and right legs from the front in front of the pair of left and right legs and the downfender included in the front fork
  • the wind guide member of the present invention is fixedly disposed so as to guide traveling air from the front to the engine side behind the two legs.
  • the semiconductor device in a side view shape of the air guide member, a front protrusion protruding forward, an upper inclined portion extending upward from the front protrusion, and the front inclined shape
  • the semiconductor device is formed in a substantially V-shape having a lower inclined portion extending rearward from the projection.
  • the upfender extends over the front fork so as to overlap the rear of the upfender with the front of the downfender in plan view, and also has the rear of the upfender when getting on the passenger. Since the lower edge is located lower than the upper edge of the front end of the down fender, even if water or mud thrown up from the front wheel splashes backward from the front end of the down fender, the mud or water at the rear end of the up fender Thus, it is possible to prevent the water and mud splashed from the front wheels from reaching the occupant side as much as possible.
  • curved side wall portions which are concaved inward in the width direction so as to form an arc shape in a cross section so as to avoid a pair of left and right legs provided in the front fork are provided on both left and right sides of the upfender.
  • the upfender can be made as close as possible to the downfender as much as possible to prevent splashing of water and mud from the front wheels while preventing mutual interference between the fender and the downfender.
  • a pair of left and right recesses formed on the front upper surface of the ceiling wall of the downfender accommodates a part of both rear sides of the upfender when approaching the front wheel Therefore, the upfender can be brought closer to the downfender while preventing mutual interference of the upfender and the downfender, and the splashing of water and mud from the front wheel can be sufficiently prevented.
  • the projection is provided on the lower surface of the front end of the downfender so as to project downward, so the space between the downfender and the front wheel is narrowed in the portion where the projection is provided.
  • the projection is formed by a part of the stay for fixing the downfender to the leg portion of the front fork, the lower surface shape of the downfender is not specially changed. The effect of the fourth feature can be obtained.
  • the electrical components mounted on the vehicle body frame are covered from the front at the rear of the upfender to prevent water and mud splashed from the front wheels from adhering to the electrical components. it can.
  • the lower end of the rear end of the down fender is disposed below the rotation axis of the front wheel, mud and water splashed back from the front wheel scatter on the engine and passenger side. Can be suppressed as much as possible by the rear end of the downfender.
  • the rear portion of the down fender is formed to be downwardly extended, mud and water splashed and raised from the front wheel may be scattered to the engine and the occupant side. It can be effectively suppressed at the rear of the down fender.
  • the rib located forward of the downfender is provided on the lower surface of the upfender so as to extend in the vehicle width direction. Mud etc. adhering to the inner surface of the upfender can be prevented from splashing backward, and mud can be prevented from reaching the occupant.
  • the mudguard performance can be improved by extending the rear end of the downfender in the vehicle width direction. It can be enhanced.
  • the louver since the louver is provided on the straightening vane, the traveling wind can be guided to the engine side, and moreover, the plurality of flow through holes possessed by the louver are covered by the wing plate when viewed from the front wheel side. Since it is possible to prevent the mud and the like from the front wheel side from reaching the engine side through the flow hole.
  • a pair of left and right air guide members covering from the front a pair of left and right legs provided in the front fork is adapted to guide traveling wind from the front to the engine side behind the two legs. Since it is fixedly arranged in front of the down fender, traveling wind can be flowed to the engine side behind the down fender.
  • the air guide member since the air guide member has a V-like shape directed forward in side view, the air guide member is provided with sufficient durability against the traveling wind. be able to.
  • FIG. 1 is a side view of a motorcycle.
  • First Embodiment FIG. 2 is an enlarged view around the front fork of FIG.
  • First Embodiment FIG. 3 is a sectional view taken along line 3-3 of FIG.
  • First Embodiment 4 is a cross-sectional view taken along line 4-4 of FIG.
  • First Embodiment FIG. 5 is a cross-sectional view taken along line 5-5 of FIG.
  • First Embodiment FIG. 6 is a perspective view of the downfender.
  • First Embodiment FIG. 7 is a view corresponding to FIG. 2 in the passenger riding state.
  • First Embodiment FIG. 8 is a front side view of the motorcycle with the front fork fully contracted.
  • First Embodiment FIG. 9 is a view on arrow 9 of FIG.
  • First Embodiment FIG. 10 is a side view in the direction of arrow 10 in FIG.
  • First Embodiment FIG. 11 is a perspective view of a headlight stay.
  • First Embodiment FIG. 12 is a view corresponding to FIG. 7 in a state where the rear end lower edge of the up fender is above the front end upper edge of the down fender in the occupant riding state.
  • First Embodiment FIG. 13 is a side view corresponding to FIG. 2 of the second embodiment.
  • Second Embodiment FIG. 14 is a cross-sectional view taken along line 14-14 of FIG.
  • Second Embodiment FIG. 15 is a rear view of the downfender according to the third embodiment.
  • Third Embodiment FIG. 16 is a perspective view of the downfender according to the fourth embodiment.
  • Fourth Embodiment FIG. 17 is a view on arrow 17 of FIG. Fourth Embodiment
  • FIG. 1 a body frame F of this motorcycle manipulates a front fork 11 for supporting a front wheel WF at its lower end.
  • a pair of left and right rear pipes 15 extending upward and backward, and a rear end of the front half inclined portion 13a of the main pipe 13 Comprises a connecting pipe 16 ... and connecting between fine the rear pipe 15 ... intermediate portion of.
  • the engine body 18 of the engine E is supported at the lower portion of the rear half inclined portion 13b of the main pipe 13 via an engine hanger (not shown) and provided at the lower portion of the down pipe 14 It is mounted so as to be supported by the engine hanger 17.
  • a fuel tank 19 is disposed above the engine body 18 so as to straddle the front inclined portion 13a of the main pipe 13 in the vehicle body frame F.
  • This fuel tank 19 is a front end portion of the front inclined portion 13a in the main pipe 13 and
  • the rubber is supported by a stiffener 91 extending between the upper and lower tabs of the down pipe 14 via a rubber 92.
  • Behind the fuel tank 19, a tandem type passenger seat 20 is disposed so as to be supported by the rear pipes 15 of the vehicle body frame F.
  • the engine body 18 has a crankcase 22 rotatably supporting a crankshaft 21 having an axis extending in the vehicle width direction, a cylinder block 23 coupled to a front upper portion of the crankcase 22 and rising upward, and the cylinder block A cylinder head 24 coupled to the upper end of the cylinder head 23 and a head cover 25 coupled to the upper end of the cylinder head 24 are provided.
  • a transmission case 26 extending rearward is connected to a lower portion of the engine body 18, that is, the crankcase 22.
  • the transmission case 26 is a transmission for changing rotational power from the crankshaft 21 ( (Not shown) is accommodated, and an output shaft 27 is rotatably supported on the transmission case 26.
  • the left end of the swing arm 28 for supporting the rear wheel WR at the rear end supports the support shaft 29 at a pair of left and right pivot frames 93 connected to the lower part of the rear half inclined portion 13b of the main pipe 13 of the vehicle body frame F.
  • a rear cushion unit 30 is provided between the rear pipe 15 of the vehicle body frame F and the rear portion of the swing arm 28 so as to be pivotally supported.
  • the rotational power is transmitted from the output shaft 27 to the rear wheel WR, and provided on the drive sprocket 31 fixed to the end of the output shaft 27 projecting from the transmission case 26 and the axle of the rear wheel WR
  • An endless chain 33 is wound around the driven driven sprocket 32.
  • the front fork 11 connects between a pair of left and right legs 35 and 35 pivotally supporting the front wheel WF at the lower end and the upper ends of the legs 35.
  • a top bridge 36 (see FIG. 1) and a bottom bridge 37 connecting the two legs 35 below the top bridge 36, and the top bridge 36 and the bottom bridge 37 sandwich the head pipe 12 from above and below
  • a steering shaft 38 is provided between the top bridge 36 and the bottom bridge 37 so as to be disposed at a position and inserted into the head pipe 12 so as to be steerably supported by the head pipe 12.
  • a longitudinal central portion of a bar-shaped steering handle 39 (see FIG. 1) is attached to the top bridge 36.
  • the leg portion 35 is constructed in an upright shape by an inner tube 40 fixed to the top bridge 36 and the bottom bridge 37 and an outer tube 41 to which the lower portion of the inner tube 40 is fitted.
  • a bellows-like boot 42 is provided between the lower portion 40 and the upper portion of the outer tube 41, and a buffer mechanism is incorporated in the leg 35.
  • an axle 43 (see FIG. 1) of the front wheel WF is supported between lower ends of the outer tubes 41 in the two legs 35.
  • the front wheel WF is covered from above by a front fender 45.
  • the front fender 45 is an up fender 46 that covers the front wheel WF from above, and a lower side than the up fender 46 so as to cover the front wheel WF from above.
  • a down fender 47 disposed at the Moreover, the up fender 46 is formed to extend over the front fork 11 and to cover the front wheel WF from above, with the rear of the up fender 46 overlapping the front of the down fender 47 in plan view.
  • the up fender 46 has an arc-like cross-sectional shape that bulges upward, and a pair of bolts 48, 48 aligned in the vehicle width direction is inserted into the up fender 46 from below via a collar (not shown) And a bolt 50 which is screwed to the front of the bottom bridge 37 in the front fork 11 and is inserted from below into the upfender 46 through a collar (not shown) is a central portion in the vehicle width direction of the rear of the bottom bridge 37 Are fixed to the bottom bridge 37 by screwing. Since the bottom bridge 37 is capable of approaching and separating from the front wheel WF, the up fender 46 is supported by the front fork 11 so as to be capable of approaching and separating from the front wheel WF.
  • the pair of left and right legs 35 provided on the front fork 11 is recessed inward in the width direction so as to avoid the portion where the boots 42 are provided, Curved side walls 46a, 46a are provided.
  • the downfender 47 has a ceiling wall 47a having an arc-like cross-sectional shape inflated upward and facing the front wheel WF from above, and the ceiling wall 47a.
  • the left and right side walls 47b and 47b are integrally formed continuously on both the left and right sides of the front cover 11 and formed in a substantially U-shaped cross section.
  • the front part of the down fender 47 is the front fork 11 Are supported by outer tubes 41 of both legs 35. Since the outer tubes 41 have a constant vertical relative position to the front wheel WF, the down fender 47 is supported by the front fork 11 with the vertical relative position to the front wheel WF constant. Become.
  • the up fender 46 capable of coming in and out of the front wheel WF is extended so as to overlap the front and rear of the front fork 11 so that the rear of the up fender 46 overlaps the front of the down fender 47 in plan view.
  • the down fender 47 which is formed on the front wheel WF and has a constant vertical relative position to the front wheel WF, is disposed below the up fender 46 so as to cover the front wheel WF from the top behind the front fork 11.
  • the upfender 46 is formed such that the lower end 46b of the rear end of the upfender 46 is located below the upper end 47c of the front end of the downfender 47. That is, the rear end lower edge 46b of the upfender 46 is disposed below the horizontal line L1 passing through the front end upper edge 47c of the downfender 47 when the passenger gets on the vehicle.
  • the downfender 47 is formed such that its lower end lower edge 47d is located below the rotation axis C of the front wheel WF, that is, the central axis of the axle 43 of the front wheel WF, and a horizontal line L2 passing through the rotation axis C.
  • a rear end lower edge 47 d of the down fender 47 is disposed below the lower end.
  • the legs 35 of the front fork 11 are provided on the left and right sides of the upfender 46 so as to be recessed inwardly in the width direction so as to avoid the legs 35 as shown in FIG.
  • the curved side wall portions 46 a are close to the front of the down fender 47. Therefore, in order to avoid interference between the front portion of the downfender 47 and the curved side wall portions 46a, the ceiling wall portion 47a and a pair of left and right side wall portions 47b and 47b integrally provided on both left and right sides of the ceiling wall portion 47a.
  • the relief recess 52 recessed rearward from the top of the side wall portion 47b to the ceiling wall portion 47a interferes with the curved side wall portion 46a in the front portion of the downfender 47 It is formed to avoid the.
  • a pair of recesses 94 are formed extending in the front-rear direction.
  • a horn 95 which is an electric component, is attached to the down pipe 14 of the vehicle body frame F behind the rear of the up fender 46 so as to be positioned above the rear lower end 46 b of the up fender 46 in a side view. .
  • the outer tubes 41 of the legs 35 of the front fork 11 have first support projections 53 projecting forward from the front near the upper end, and the first support projections The second support protrusions 54 that project rearward from the rear above the portions 53.
  • a stay 55 is fastened to the first support projection 53 and the second support projection 54, and the front end of the downfender 47 is supported by the outer tube 41 via the stay 55.
  • the stay 55 has a pair of left and right support plate portions 55a, 55a having a front end portion fastened to the first support projection 53, and extending around the outer tube 41 inward in the vehicle width direction and extending backward; A pair of left and right rising plates 55b, 55b that rise upward from the rear end of the support plate 55a at the rear of the legs 35 and face the inner surface of the side walls 47b of the downfender 47, and both rising plates
  • the upper ends of the portions 55b are connected to each other so as to integrally have an arc-shaped connecting plate 55c close to and opposed to the inner surface of the ceiling wall 47a of the downfender 47.
  • First weld nuts 56 are fixed to the front end of the support plate portions 55a, and bolts 57 inserted through the first support projections 53 are screwed onto the first weld nuts 56.
  • the front end portion of the support plate portion 55a, that is, the front end portion of the stay 55 is fastened to the first support projection 53 by clamping.
  • a second flange 58a, 58a sandwiched between the inner surface of the front end lower portion of the side wall 47b of the downfender 47 and the rear end outer surface of the support plate 55a.
  • Weld nuts 58, 58 are fixed, and bolts 59, 59 inserted into lower end portions of the side walls 47b are screwed on and tightened to the second weld nuts 58, so that the front ends of the side walls 47b are The lower part is fastened to the stay 55.
  • a third support nut 54 is secured to the third weld nut 60 having a flange 60a and a flange 60a, and the second support projection 54 sandwiches the upper end of the front end of the side wall 47b with the flange 60a.
  • the lower end of the front end portion of the down fender 47 is provided with a protrusion 62 projecting downward, and the protrusion 62 is a rising plate portion 55b which is a part of the stay 55 and a connecting plate portion 55c. Configured Further, a rib 63 extending in the vehicle width direction is provided on the lower surface of the upfender 46 in front of the downfender 47.
  • a headlight stay 70 is supported by the top bridge 36 and the bottom bridge 37 of the front fork 11.
  • the headlight stay 70 is a main pipe. 71, a lower mounting plate 72 to which the main pipe 71 is attached, a pair of left and right sub pipes 73 and 73 whose one end is fixed to the main pipe 71, and a support plate 74 fixed to the middle part of both sub pipes 73, 74 and an upper mounting plate 75 to which the other ends of the two sub pipes 73 are fixed in common.
  • the main pipe 71 includes a curved portion 71a formed in a substantially U shape opened downward, and a pair of left and right arm portions 71b and 71b extending from lower ends of the curved portion 71a toward the bottom bridge 37 of the front fork 11. It is formed to have it in one. Further, one end of a pair of left and right sub pipes 73 is fixed to the left and right middle portions of the curved portion 71a and is extended to the top bridge 36 side of the front fork 11, and both arm portions 71b of the main pipe 71 , 71b are fixed to the lower mounting plate 72, and the other ends of the sub pipes 73 are fixed to the upper mounting plate 75.
  • the lower mounting plate 72 is brought into contact with the upper surface of the bottom bridge 37 from the upper side, and is fixed to the lower mounting plate 72 so that a pair of pins 76 and 76 which project downward from the lower mounting plate 72.
  • the lower part is inserted into a pair of insertion holes 77, 77 (see FIG. 3) provided in the bottom bridge 37.
  • the upper mounting plate 75 is in contact with the lower surface of the top bridge 36 from below, and is fixed to the upper mounting plate 75 and a pair of pins 78 projecting downward from the upper mounting plate 75,
  • the upper part of 78 is inserted into a pair of insertion holes (not shown) provided in the top bridge 36.
  • the headlight stay 70 is supported by the top bridge 36 and the bottom bridge 37 of the front fork 11.
  • Insertion holes 79, 79 are provided at the front of the support plate 74, and both side surfaces of the headlight 80 disposed in the curved portion 71a of the main pipe 71 are inserted through the insertion holes 79 in a front view.
  • the support plate 74 is supported by bolts 81.
  • mounting holes 82, 82 are provided at the rear of the support plate 74, and blinkers 83, 83 arranged on the left and right sides of the headlight 80 are attached to the support plate 74 using the mounting holes 82. It is attached.
  • an instrument support stay 84 is provided between the two sub pipes 83 so as to be located behind the headlight 80, and an instrument unit 85 disposed obliquely above the rear of the headlight 80 supports the instrument. It is supported by the stay 84 and the top bridge 36.
  • the front fender 45 covering the front wheel WF from above is covered with the front wheel WF behind the front fork 11 from above while the vertical relative position to the front wheel WF is fixed.
  • An upfender 46 configured in cooperation with a downfender 47 supported by the forks 11 extends over the front and back of the front fork 11 so that the rear of the upfender 46 overlaps the front of the downfender 47 in plan view.
  • the rear end lower edge 46 ′ b of the up fender 46 ′ that constitutes the front fender 45 ′ in cooperation with the down fender 47 is the front end upper edge 47 c of the down fender 47.
  • Curved side walls 46a and 46a are provided on the left and right sides of the up fender 46 so that the side walls 46a and 46a are concaved inward in the width direction so as to avoid a pair of left and right legs 35 of the front fork 11 and bulge upward
  • a front of a down fender 47 having an arc-shaped cross-sectional shape and having a ceiling wall 47a facing the front wheel WF from above and a pair of side walls 47b integrally connected on both left and right sides of the ceiling wall 47a
  • a pair of left and right recessed downward so as to be able to accommodate a part of both rear sides of the up fender 46 when the up fender 46 approaches the front wheel WF. Since the recesses 94, 94 are formed to extend in the front-rear direction, the upfender 46 can be brought closer to the downfender 47 side while preventing the upfender 46 and the downfender 47 from interfering with each other. Water and mud can be sufficiently prevented from splashing.
  • the lower projecting portion 62 is provided on the lower surface of the front end portion of the down fender 47, the space between the down fender 47 and the front wheel WF is narrowed at the portion where the projecting portion 62 is provided Due to this, mud and the like that scatter forward move around from the front end of the down fender 47 to the upper surface side, and it is possible to suppress that the upper surface of the down fender 47 becomes dirty.
  • the projection 62 is constituted by a part of the stay 55 for fixing the down fender 47 to the legs 35 of the front fork 11, the shape of the down fender 47 can be lowered without specially changing the lower surface shape. The effect of suppressing the contamination of the upper surface of the fender 47 can be obtained.
  • the horn 95 is attached to the down pipe 14 of the vehicle body frame F at the rear of the rear of the up fender 46 so as to be positioned above the rear lower end 46 b of the up fender 46 in a side view, It is possible to prevent water and mud splashed from WF from adhering to the horn 95.
  • the lower fender 47 is formed so that the lower end lower edge 47 d is positioned below the rotation axis C of the front wheel WF, the mud and water splashed and raised from the front wheel WF to the engine E and the occupant side Scattering can be suppressed as much as possible by the rear end portion of the down fender 47.
  • a rib 63 extending in the vehicle width direction is provided on the lower surface of the upfender 46 in front of the downfender 47, mud etc. that scatters from the front to the upper side of the front wheel WF and adheres to the inner surface of the upfender 46 It can be prevented from splashing backwards and mud can be prevented from reaching the occupants.
  • a pair of left and right air guide members 65, 65 covering the both legs 35 from the front are fixedly arranged in front of the pair of left and right legs 35 and the down fender 47 provided in the front fork 11.
  • the air guide member 65 has a shape that is expanded outward in the vehicle width direction so as to be positioned outward in the vehicle width direction as it goes to the rear in plan view, and the front of the leg portion 35 in the front fork 11 is As shown by the arrow in FIG. 14, the traveling wind that has passed the side of the air guide member 65 causes a vortex to occur behind the leg 35 on the rear side of the leg 35. By the negative pressure generated at this time, the traveling wind can be made to flow toward the engine E side behind the down fender 47 by being drawn inward in the vehicle width direction.
  • the air guide member 65 has a side view shape, a front protrusion 65 a protruding forward, an upper inclined portion 65 b extending upward from the front protrusion 65 a, and extension extending downward from the front protrusion 65 a
  • a lower inclined portion 65c is provided, and the front projection 65a, the upper inclined portion 65b, and the lower inclined portion 65c are arranged to be substantially V-shaped.
  • the upper inclined portion 65b and the lower inclined portion 65c exert a supporting action when the traveling wind hits the front projection 65a, and the lower inclined portion 65c exhibits the support action when the traveling wind hits the upper inclined portion 65b.
  • the upper inclined portion 65b exerts a supporting function to have sufficient durability against the traveling wind.
  • the air guide member 65 integrally has a flat plate-like attached portion 65d connecting between the rear of the upper inclined portion 65b and the lower inclined portion 65c, and the lower portion of the attached portion 65d is the front fork 11
  • the front end portion of the support plate portion 55a of the stay 55 is fastened together to the first support projection 53 provided on the front portion of the outer tube 41 of the leg portion 35 at the upper end close to the upper end and projecting forward.
  • the third support projection 66 projecting forward from the front of the outer tube 41 above the first support projection 53 is fastened by a bolt 67.
  • a pair of left and right air guide members 65 covering the pair of left and right legs 35 and 35 from the front in front of the pair of left and right legs 35 and the down fender 47 provided in the front fork 11 , 65 are arranged so as to guide the traveling wind from the front to the engine E side behind the two legs 35..., The traveling wind can be flowed to the engine E side behind the down fender 47.
  • the side view shape of the air guide member 65 includes a front protrusion 65a projecting forward, an upper inclined portion 65b extending upward from the front projection 65a, and a lower inclined portion extending rearward from the front projection 65a.
  • the air guide member 65 is formed in a substantially V-shape, so that the wind guide member 65 can be provided with sufficient durability against the traveling wind.
  • the downfender according to the third embodiment of the present invention will be described with reference to FIG. 15.
  • the rear of the downfender 47 is formed so as to widen in the downward direction along the vehicle width direction. That is, on the both sides of the rear part of the down fender 47, a pair of left and right overhangs 47e and 47e are integrally formed, and the amount of side overhang of the overhangs 47e... Is set to be
  • the mud or water splashed backward from the front wheel WF (see the first embodiment) is scattered to the engine E (see the first embodiment) and the occupant. Can be effectively suppressed at the rear of the down fender 47.
  • vane-shaped straightening vanes 88, 88 project from the down fender 47 to the left and right. Louvers 89 and 89 are provided on the straightening vanes 88.
  • the louver 89 includes a plurality of wing plates 89a and so on and a flow through hole 90 is formed between the wing plates 89a and so on.
  • the louver 89 is provided on the straightening vane 88 so as to cover the flow holes 90 when viewed from the side.
  • the rear end of the downfender 47 is expanded in the vehicle width direction. Mudguard performance can be enhanced.
  • louver 89 is provided on the straightening vane 88, the traveling wind can be guided to the engine E side, and the plurality of flow through holes 90 of the louver 89 are covered with the wing plates 89a when viewed from the front wheel WF side. Therefore, it is possible to prevent mud and the like from the front wheel WF side from reaching the engine E side through the flow holes 90.
  • the lower end of the rear end of the upfender is positioned lower than the upper end of the front end of the downfender when getting on the occupant, but in this case, the lower end of the rear end of the upfender when no occupant May be located above the front end upper edge of the down fender. Then, the effects of the present invention can be obtained at the time of getting on the passenger while making both the upfender and the downfender as small as possible. Also, the rear end lower edge of the up fender may be positioned at the same height as the front end upper edge of the down fender or below the front end upper edge of the down fender even in a state where the passenger does not get on. Even when the weight of the occupant is, for example, 40 kg or less, the effects of the present invention can be obtained at the time of getting on the vehicle.

Abstract

In an automatic two-wheeled vehicle in which a front fender is configured from an up-fender capable of moving toward and away from a front wheel, and a down-fender disposed below the up-fender so as to cover the front wheel from above behind a front fork and having a constant vertical relative position with respect to the front wheel, the up-fender (46) is formed so as to extend in front of and behind the front fork (11) with the rear part thereof overlapping with the front part of the down-fender (47) in plan view, and formed such that the rear end lower edge (46b) of the up-fender (46) is located below the front end upper edge (47c) of the down-fender (47) while an occupant is riding in a vehicle. Consequently, the scattering of mud and water to the occupant side can be reduced by mutual functions of the up-fender and the down-fender.

Description

自動二輪車におけるフロントフェンダ構造Front fender structure in a motorcycle
　本発明は、前輪を上方から覆うフロントフェンダが、前輪を下端部で軸支する左右一対の脚部を有するフロントフォークに前記前輪に対する近接・離反を可能として支持されるとともに少なくとも前記フロントフォークの前方で前記前輪を上方から覆うアップフェンダと、前記フロントフォークの後方で前記前輪を上方から覆うようにして前記アップフェンダよりも下方に配置されるとともに前記前輪に対する上下方向相対位置を一定として前記フロントフォークに支持されるダウンフェンダとで構成される自動二輪車に関し、特に、フロントフェンダ構造の改良に関する。 According to the present invention, a front fender covering the front wheel from above is supported by a front fork having a pair of left and right legs pivotally supporting the front wheel at a lower end portion so as to approach and separate from the front wheel and at least the front of the front fork And an upper fender covering the front wheel from above, and a lower front than the up fender so as to cover the front wheel from above at the rear of the front fork and the front fork being positioned at a constant vertical relative position to the front wheel In particular, the present invention relates to improvement of a front fender structure.
　前輪を上方から覆うアップフェンダと、該アップフェンダよりも下方かつ後方で前輪を上方から覆うダウンフェンダとでフロントフェンダが構成されるようにした自動二輪車が、特許文献１で知られている。 A motorcycle having a front fender configured by an up fender covering the front wheel from above and a down fender covering the front wheel from below and behind the up fender is known from Patent Document 1.
日本特許第４０３１５０２号公報Japanese Patent No. 4031502
　ところが、上記特許文献１で開示されるものでは、アップフェンダは、フロントフォークの脚部の前方で前輪を上方から覆い、ダウンフェンダがフロントフォークの脚部の後方で前輪を上方から覆うように形成されており、前輪からの水や泥の跳ね上げを充分に防止するために、前記アップフェンダをフロントフォークの脚部よりも後方まで延ばしたいと言う要望がある。しかるにアップフェンダは、前輪に対する近接・離反を可能としてフロントフォークに支持されるのに対して、ダウンフェンダは前輪に対する上下方向相対位置を一定としてフロントフォークに支持されるので、撥ね上げられた水や泥の乗員側への飛散を効率良く減らすためにはアップフェンダおよびダウンフェンダの位置関係が重要になる。あるいはまたアップフェンダの後部をフロントフォークの脚部よりも後方に単純に延ばした構造では、アップフェンダの後部およびダウンフェンダの前部の相互干渉への配慮が必要である。 However, in the above-mentioned Patent Document 1, the upfender is formed so as to cover the front wheel from above at the front of the leg of the front fork, and the downfender from above at the back of the leg of the front fork. There is a demand to extend the up-fender to the rear of the front fork legs in order to sufficiently prevent water and mud from rising from the front wheels. However, while the upfender is supported by the front fork so that it can approach and move away from the front wheel, the downfender is supported by the front fork with a constant vertical relative position with respect to the front wheel. The positional relationship between upfenders and downfenders is important in order to effectively reduce the splashing of mud to the passenger side. Alternatively, in a structure in which the rear of the upfender is simply extended rearward of the legs of the front fork, consideration must be given to mutual interference between the rear of the upfender and the front of the downfender.
　本発明は、かかる事情に鑑みてなされたものであり、アップフェンダおよびダウンフェンダの相互の機能によって泥や水の乗員側への飛散を減らすことを可能とし、あるいはまたアップフェンダおよびダウンフェンダの相互干渉を回避し得るようにした自動二輪車におけるフロントフェンダ構造を提供することを目的とする。 The present invention has been made in view of such circumstances, and it is possible to reduce the splashing of mud and water to the passenger side by the mutual function of the upfender and the downfender, or the mutual interaction of the upfender and the downfender. An object of the present invention is to provide a front fender structure in a motorcycle that can avoid interference.
　上記目的を達成するために、本発明は、前輪を上方から覆うフロントフェンダが、前輪を下端部で軸支する左右一対の脚部を有するフロントフォークに前記前輪に対する近接・離反を可能として支持されるとともに少なくとも前記フロントフォークの前方で前記前輪を上方から覆うアップフェンダと、前記フロントフォークの後方で前記前輪を上方から覆うようにして前記アップフェンダよりも下方に配置されるとともに前記前輪に対する上下方向相対位置を一定として前記フロントフォークに支持されるダウンフェンダとで構成される自動二輪車において、前記アップフェンダが、その後部を平面視で前記ダウンフェンダの前部に重ねるようにして前記フロントフォークの前後にわたって延びるとともに乗員乗車時の前記アップフェンダの後端下縁が前記ダウンフェンダの前端上縁よりも下方に位置するように形成されることを第１の特徴とする。 In order to achieve the above object, according to the present invention, a front fender covering a front wheel from above is supported by a front fork having a pair of left and right legs pivotally supporting the front wheel at a lower end portion so as to approach and separate from the front wheel. An upfender covering the front wheel from above at least in front of the front fork, and being disposed below the upfender so as to cover the front wheel from above at the back of the front fork and being vertically disposed relative to the front wheel In a motorcycle comprising a downfender supported by the front fork at a constant relative position, the upfender overlaps the front of the downfork so that the rear portion thereof is superimposed on the front of the downfender in plan view. And the above-mentioned upfender when getting on the passenger That the rear end bottom edge thereof so as to be positioned below the front upper edge of the down fender to the first aspect.
　また本発明は、第１の特徴の構成に加えて、左右一対の前記脚部を避けるように幅方向内方に凹んで横断面円弧状となる湾曲側壁部が前記アップフェンダの左右両側に設けられ、前記ダウンフェンダが、上方に膨らんだ円弧状の横断面形状を有して前記前輪に上方から対向する天井壁部ならびに該天井壁部の左右両側に一体に連設される左右一対の側壁部を有するように形成され、このダウンフェンダの前部に、前記アップフェンダが前記前輪に近接したときに前記アップフェンダの前記湾曲側壁部が前記ダウンフェンダの前部と干渉するのを避けるための逃げ凹部が、左右一対の前記側壁部の上部から前記天井壁部にかけて後方側に凹むようにして形成されることを第２の特徴とする。 Further, according to the present invention, in addition to the configuration of the first feature, curved side wall portions which are recessed inward in the width direction so as to avoid the pair of left and right legs are provided on both left and right sides of the upfender. And the downfender has an arc-like cross-sectional shape that bulges upward, and a ceiling wall facing the front wheel from above as well as a pair of left and right side walls integrally provided on both left and right sides of the ceiling wall. Formed at the front of the downfender to prevent the curved side wall of the upfender from interfering with the front of the downfender when the upfender approaches the front wheel A second feature is that the relief recess is formed to be recessed rearward from the upper portion of the pair of left and right side wall portions to the ceiling wall portion.
　本発明は、第２の特徴の構成に加えて、前記天井壁部の前部上面に、前記アップフェンダが前記前輪に近接したときに前記アップフェンダの後部両側の一部を収容可能として下方に凹んだ左右一対の凹部が前後方向に延びて形成されることを第３の特徴とする。 According to the present invention, in addition to the configuration of the second feature, a part of both sides of the rear of the upfender can be accommodated downward when the upfender approaches the front wheel on the upper surface of the front wall of the ceiling wall. A third feature is that a pair of recessed left and right recesses extend in the front-rear direction.
　本発明は、第１～第３の特徴の構成のいずれかに加えて、前記ダウンフェンダの前端部下面に、下方に突出する突部が設けられることを第４の特徴とする。 According to a fourth feature of the present invention, in addition to any of the configurations of the first to third features, a projection projecting downward is provided on the lower surface of the front end portion of the downfender.
　本発明は、第４の特徴の構成に加えて、前記突部が、前記ダウンフェンダを前記フロントフォークの脚部に固定するためのステーの一部で構成されることを第５の特徴とする。 The present invention is fifthly characterized in that, in addition to the configuration of the fourth feature, the projection is constituted by a part of a stay for fixing the downfender to the leg portion of the front fork. .
　本発明は、第１～第５の特徴の構成のいずれかに加えて、前記アップフェンダの後部の後方で車体フレームに、該アップフェンダの後端下縁よりも側面視で上方に位置するようにして電装品が取付けられることを第６の特徴とする。 According to the present invention, in addition to any one of the configurations of the first to fifth features, the vehicle body frame is located behind the rear end of the upfender and above the rear end lower edge of the upfender in a side view The sixth feature is that the electrical components are attached.
　本発明は、第１～第６の特徴の構成のいずれかに加えて、前記ダウンフェンダは、その後端下縁が前記前輪の回転軸線よりも下方に位置するように形成されることを第７の特徴とする。 According to the present invention, in addition to any of the first to sixth aspects, the downfender is formed such that a lower end lower edge thereof is positioned lower than the rotation axis of the front wheel. It is the feature of
　本発明は、第１～第７の特徴の構成のいずれかに加えて、前記ダウンフェンダの後部が、その車幅方向に沿う幅を下方に向かうにつれて広くするように形成されることを第８の特徴とする。 According to the present invention, in addition to any one of the configurations of the first to seventh features, the rear end of the downfender is formed so as to widen in the downward direction along the vehicle width direction. It is the feature of
　本発明は、第１～第８の特徴の構成のいずれかに加えて、前記ダウンフェンダよりも前方で前記アップフェンダの下面に、車幅方向に延びるリブが設けられることを第９の特徴とする。 According to a ninth aspect of the present invention, in addition to any one of the first to eighth features, a rib extending in the vehicle width direction is provided on the lower surface of the upfender in front of the downfender. Do.
　本発明は、第１～第９の特徴の構成のいずれかに加えて、前記ダウンフェンダの後端部に、該ダウンフェンダから左右両側に張り出す翼形状の整流板が設けられることを第１０の特徴とする。 According to a tenth aspect of the present invention, in addition to any one of the first to ninth aspects, a wing-shaped straightening vane may be provided at a rear end portion of the downfender, projecting to both left and right sides from the downfender. It is the feature of
　本発明は、第１０の特徴の構成に加えて、前記整流板に、複数の羽板を有するとともにそれらの羽板相互間に流通孔が形成されるルーバが、前輪側から見たときに前記羽板が前記流通孔を覆う位置にあるようにして設けられることを第１１の特徴とする。 According to the present invention, in addition to the configuration of the tenth feature, a louver having a plurality of slats in the straightening vane and a flow through hole formed between the slats is viewed from the front wheel side An eleventh feature is that a slat is provided so as to be in a position covering the flow through hole.
　本発明は、第１～第１１の特徴の構成のいずれかに加えて、前記フロントフォークが備える左右一対の脚部および前記ダウンフェンダの前方に、左右一対の前記脚部を前方から覆う左右一対の導風部材が、前方からの走行風を前記両脚部の後方のエンジン側に導くようにして固定配置されることを第１２の特徴とする。 According to the present invention, in addition to any of the configurations of the first to eleventh features, a pair of left and right legs covering the pair of left and right legs from the front in front of the pair of left and right legs and the downfender included in the front fork A twelfth feature of the present invention is that the wind guide member of the present invention is fixedly disposed so as to guide traveling air from the front to the engine side behind the two legs.
　さらに本発明は、第１２の特徴の構成に加えて、前記導風部材の側面視形状が、前方に突出する前方突部と、該前方突部から後上がりに延びる上傾斜部と、前記前方突部から後下がりに延びる下傾斜部とを有して略Ｖ字状に形成されることを第１３の特徴とする。 Furthermore, in addition to the configuration of the twelfth feature of the present invention, in a side view shape of the air guide member, a front protrusion protruding forward, an upper inclined portion extending upward from the front protrusion, and the front inclined shape According to a thirteenth feature of the present invention, the semiconductor device is formed in a substantially V-shape having a lower inclined portion extending rearward from the projection.
　本発明の第１の特徴によれば、アップフェンダが、該アップフェンダの後部を平面視でダウンフェンダの前部に重ねるようにして前記フロントフォークの前後にわたって延び、しかも乗員乗車時にアップフェンダの後端下縁がダウンフェンダの前端上縁よりも下方に位置するので、前輪から撥ね上げられた水や泥がダウンフェンダの前端から後方に飛散してもアップフェンダの後端部でその泥や水を受けることを可能とし、前輪から撥ね上げられた水や泥が乗員側に達するのを極力防止することができる。 According to the first aspect of the present invention, the upfender extends over the front fork so as to overlap the rear of the upfender with the front of the downfender in plan view, and also has the rear of the upfender when getting on the passenger. Since the lower edge is located lower than the upper edge of the front end of the down fender, even if water or mud thrown up from the front wheel splashes backward from the front end of the down fender, the mud or water at the rear end of the up fender Thus, it is possible to prevent the water and mud splashed from the front wheels from reaching the occupant side as much as possible.
　また本発明の第２の特徴によれば、フロントフォークが備える左右一対の脚部を避けるように幅方向内方に凹んで横断面円弧状となる湾曲側壁部がアップフェンダの左右両側に設けられるのであるが、アップフェンダが前輪に近接したときにアップフェンダの両湾曲側壁部がダウンフェンダの前部と干渉するのを避けるための逃げ凹部がダウンフェンダの前部に形成されるので、アップフェンダおよびダウンフェンダの相互干渉が生じるのを防止しつつアップフェンダをダウンフェンダ側に極力近接させて前輪からの水や泥の跳ね上げを充分に防止することができる。 Further, according to the second feature of the present invention, curved side wall portions which are concaved inward in the width direction so as to form an arc shape in a cross section so as to avoid a pair of left and right legs provided in the front fork are provided on both left and right sides of the upfender. However, since the relief recess is formed on the front of the downfender to prevent the curved side walls of the upfender from interfering with the front of the downfender when the upfender approaches the front wheel, The upfender can be made as close as possible to the downfender as much as possible to prevent splashing of water and mud from the front wheels while preventing mutual interference between the fender and the downfender.
　本発明の第３の特徴によれば、ダウンフェンダの天井壁部の前部上面に形成される左右一対の凹部に、前輪に近接したときにアップフェンダの後部両側の一部を収容することができるので、アップフェンダおよびダウンフェンダの相互干渉が生じるのを防止しつつアップフェンダをダウンフェンダ側により近接させることができ、前輪からの水や泥の跳ね上げを充分に防止することができる。 According to the third aspect of the present invention, a pair of left and right recesses formed on the front upper surface of the ceiling wall of the downfender accommodates a part of both rear sides of the upfender when approaching the front wheel Therefore, the upfender can be brought closer to the downfender while preventing mutual interference of the upfender and the downfender, and the splashing of water and mud from the front wheel can be sufficiently prevented.
　本発明の第４の特徴によれば、下方に突出するようにしてダウンフェンダの前端部下面に突部が設けられるので、該突部が設けられる部分ではダウンフェンダおよび前輪間の間隔を狭くして、走行時に前輪の回転に伴って前方に飛散する泥等がダウンフェンダの前端から上面側に回り込み、ダウンフェンダの上面が汚れることを抑制することができる。 According to the fourth aspect of the present invention, the projection is provided on the lower surface of the front end of the downfender so as to project downward, so the space between the downfender and the front wheel is narrowed in the portion where the projection is provided. Thus, it is possible to suppress dirt on the upper surface of the downfender from being swept away from the front end of the downfender from the front end of the downfender by mud and the like scattering forward with the rotation of the front wheel during traveling.
　本発明の第５の特徴によれば、ダウンフェンダをフロントフォークの脚部に固定するためのステーの一部で突部が構成されるので、ダウンフェンダの下面形状を特別に変更することなく、第４の特徴の効果を得ることができる。 According to the fifth aspect of the present invention, since the projection is formed by a part of the stay for fixing the downfender to the leg portion of the front fork, the lower surface shape of the downfender is not specially changed. The effect of the fourth feature can be obtained.
　本発明の第６の特徴によれば、車体フレームに取付けられる電装品をアップフェンダの後部で前方から覆うようにして、前輪から跳ね上がられる水や泥が電装品に付着するのを防止することができる。 According to the sixth aspect of the present invention, the electrical components mounted on the vehicle body frame are covered from the front at the rear of the upfender to prevent water and mud splashed from the front wheels from adhering to the electrical components. it can.
　本発明の第７の特徴によれば、ダウンフェンダの後端下縁が前輪の回転軸線よりも下方に配置されるので、前輪から後方に撥ね上げられる泥や水がエンジンおよび乗員側に飛散するのをダウンフェンダの後端部によって極力抑制することができる。 According to the seventh aspect of the present invention, since the lower end of the rear end of the down fender is disposed below the rotation axis of the front wheel, mud and water splashed back from the front wheel scatter on the engine and passenger side. Can be suppressed as much as possible by the rear end of the downfender.
　本発明の第８の特徴によれば、ダウンフェンダの後部が下方に向かって末広がりとなるように形成されるので、前輪から後方に撥ね上げられる泥や水がエンジンおよび乗員側に飛散するのをダウンフェンダの後部で効果的に抑制することができる。 According to the eighth aspect of the present invention, since the rear portion of the down fender is formed to be downwardly extended, mud and water splashed and raised from the front wheel may be scattered to the engine and the occupant side. It can be effectively suppressed at the rear of the down fender.
　本発明の第９の特徴によれば、アップフェンダの下面に、ダウンフェンダよりも前方に位置するリブが車幅方向に延びるようにして設けられるので、走行時に前方から前輪の上方に飛散してアップフェンダの内面に付着した泥等が後方に飛び散らないようにすることができ、乗員まで泥が到達するのを防止することができる。 According to the ninth aspect of the present invention, the rib located forward of the downfender is provided on the lower surface of the upfender so as to extend in the vehicle width direction. Mud etc. adhering to the inner surface of the upfender can be prevented from splashing backward, and mud can be prevented from reaching the occupant.
　本発明の第１０の特徴によれば、ダウンフェンダの後端部から翼形状の整流板が左右両側に張り出すので、ダウンフェンダの後端を車幅方向に拡げることで、泥よけ性能を高めることができる。 According to the tenth aspect of the present invention, since the vane-shaped straightening vanes project to the left and right from the rear end of the downfender, the mudguard performance can be improved by extending the rear end of the downfender in the vehicle width direction. It can be enhanced.
　本発明の第１１の特徴によれば、整流板にルーバが設けられるのでエンジン側に走行風を導くことができ、しかもルーバが有する複数の流通孔は前輪側から見たときに羽板で覆われるので、前輪側からの泥等が流通孔を経てエンジン側に及ぶことを防止することができる。 According to the eleventh feature of the present invention, since the louver is provided on the straightening vane, the traveling wind can be guided to the engine side, and moreover, the plurality of flow through holes possessed by the louver are covered by the wing plate when viewed from the front wheel side. Since it is possible to prevent the mud and the like from the front wheel side from reaching the engine side through the flow hole.
　本発明の第１２の特徴によれば、フロントフォークが備える左右一対の脚部を前方から覆う左右一対の導風部材が、前方からの走行風を前記両脚部の後方のエンジン側に導くようにしてダウンフェンダの前方に固定配置されるので、ダウンフェンダの後方のエンジン側に走行風を流すことができる。 According to a twelfth aspect of the present invention, a pair of left and right air guide members covering from the front a pair of left and right legs provided in the front fork is adapted to guide traveling wind from the front to the engine side behind the two legs. Since it is fixedly arranged in front of the down fender, traveling wind can be flowed to the engine side behind the down fender.
　さらに本発明の第１３の特徴によれば、導風部材が側面視では前方に向けたＶ字状の形状を有するものであるので、導風部材に、走行風に対する充分な耐久性を付与することができる。 Furthermore, according to a thirteenth feature of the present invention, since the air guide member has a V-like shape directed forward in side view, the air guide member is provided with sufficient durability against the traveling wind. be able to.
図１は自動二輪車の側面図である。（第１の実施の形態）FIG. 1 is a side view of a motorcycle. First Embodiment 図２は図１のフロントフォーク付近の拡大図である。（第１の実施の形態）FIG. 2 is an enlarged view around the front fork of FIG. First Embodiment 図３は図２の３－３線断面図である。（第１の実施の形態）FIG. 3 is a sectional view taken along line 3-3 of FIG. First Embodiment 図４は図２の４－４線断面図である。（第１の実施の形態）4 is a cross-sectional view taken along line 4-4 of FIG. First Embodiment 図５は図２の５－５線断面図である。（第１の実施の形態）FIG. 5 is a cross-sectional view taken along line 5-5 of FIG. First Embodiment 図６はダウンフェンダの斜視図である。（第１の実施の形態）FIG. 6 is a perspective view of the downfender. First Embodiment 図７は乗員乗車状態での図２に対応した図である。（第１の実施の形態）FIG. 7 is a view corresponding to FIG. 2 in the passenger riding state. First Embodiment 図８はフロントフォークが最大限収縮した状態での自動二輪車の前部側面図である。（第１の実施の形態）FIG. 8 is a front side view of the motorcycle with the front fork fully contracted. First Embodiment 図９は図１の９矢視図である。（第１の実施の形態）FIG. 9 is a view on arrow 9 of FIG. First Embodiment 図１０は図９の１０矢視側面図である。（第１の実施の形態）FIG. 10 is a side view in the direction of arrow 10 in FIG. First Embodiment 図１１はヘッドライト用ステーの斜視図である。（第１の実施の形態）FIG. 11 is a perspective view of a headlight stay. First Embodiment 図１２は乗員乗車状態でアップフェンダの後端下縁がダウンフェンダの前端上縁よりも上方にある状態での図７に対応した図である。（第１の実施の形態）FIG. 12 is a view corresponding to FIG. 7 in a state where the rear end lower edge of the up fender is above the front end upper edge of the down fender in the occupant riding state. First Embodiment 図１３は第２の実施の形態の図２に対応した側面図である。（第２の実施の形態）FIG. 13 is a side view corresponding to FIG. 2 of the second embodiment. Second Embodiment 図１４は図１３の１４－１４線断面図である。（第２の実施の形態）FIG. 14 is a cross-sectional view taken along line 14-14 of FIG. Second Embodiment 図１５は第３の実施の形態のダウンフェンダの背面図である。（第３の実施の形態）FIG. 15 is a rear view of the downfender according to the third embodiment. Third Embodiment 図１６は第４の実施の形態のダウンフェンダの斜視図である。（第４の実施の形態）FIG. 16 is a perspective view of the downfender according to the fourth embodiment. Fourth Embodiment 図１７は図１６の１７矢視図である。（第４の実施の形態）FIG. 17 is a view on arrow 17 of FIG. Fourth Embodiment
１１・・・フロントフォーク
３５・・・脚部
４５・・・フロントフェンダ
４６・・・アップフェンダ
４６ａ・・・湾曲側壁部
４６ｂ・・・アップフェンダの後端下縁
４７・・・ダウンフェンダ
４７ａ・・・天井壁部
４７ｂ・・・側壁部
４７ｃ・・・ダウンフェンダの前端上縁
４７ｄ・・・ダウンフェンダの後端下縁
５２・・・逃げ凹部
５５・・・ステー
６２・・・突部
６３・・・リブ
６５・・・導風部材
６５ａ・・・前方突部
６５ｂ・・・上傾斜部
６５ｃ・・・下傾斜部
８８・・・整流板
８９・・・ルーバ
８９ａ・・・羽板
９０・・・流通孔
９４・・・凹部
９５・・・電装品であるホーン
Ｃ・・・前輪の回転軸線
Ｅ・・・エンジン
ＷＦ・・・前輪 11: Front fork 35: Leg 45: Front fender 46: Up fender 46a: Curved side wall 46b: Rear end lower edge of up fender 47: Down fender 47a · · · · Ceiling wall portion 47b · · · sidewall portion 47c · · · · front edge of the down fender upper edge 47 d · · · · · · rear edge lower edge 52 of the down fender · · · relief recess 55 · · · stay 62 · · · · · ... Rib 65 ... Air guide member 65a ... Front projection 65b ... Upper inclined portion 65c ... Lower inclined portion 88 ... Current plate 89 ... Louver 89a ... Feather plate 90 ... is a flow holes 94 ... recess 95 ... electrical equipment horn C ... front wheel rotation axis E ... engine WF ... front wheel
　以下、本発明の実施の形態について、添付の図面を参照しながら説明する。 Hereinafter, embodiments of the present invention will be described with reference to the attached drawings.
第１の実施の形態First embodiment
　本発明の第１の実施の形態について図１～図１２を参照しながら説明すると、先ず図１において、この自動二輪車の車体フレームＦは、前輪ＷＦを下端部で軸支するフロントフォーク１１を操向可能に支承するヘッドパイプ１２と、該ヘッドパイプ１２からわずかに後下がりに延びる前半傾斜部１３ａならびに前半傾斜部１３ａよりも急傾斜で前半傾斜部１３ａの後端から後下がりに延びる後半傾斜部１３ｂを有するメインパイプ１３と、該メインパイプ１３の前半傾斜部１３ａよりも急角度に傾斜して前記ヘッドパイプ１２から後下がりに延びるダウンパイプ１４と、前記メインパイプ１３における後半傾斜部１３ｂの下部から後上がりに延びる左右一対のリヤパイプ１５…と、前記メインパイプ１３における前半傾斜部１３ａの後端および前記リヤパイプ１５…の中間部間を連結する連結パイプ１６…とを備える。 A first embodiment of the present invention will be described with reference to FIGS. 1 to 12. First, in FIG. 1, a body frame F of this motorcycle manipulates a front fork 11 for supporting a front wheel WF at its lower end. The head pipe 12, which supports movably, and the first half inclined portion 13a extending slightly backward from the head pipe 12, and the second half inclined portion extending backward from the rear end of the first half inclined portion 13a A main pipe 13 having a 13b, a down pipe 14 which is inclined at a steeper angle than the front half inclined portion 13a of the main pipe 13 and extends backward from the head pipe 12, and a lower portion of a rear half inclined portion 13b of the main pipe 13. And a pair of left and right rear pipes 15 extending upward and backward, and a rear end of the front half inclined portion 13a of the main pipe 13 Comprises a connecting pipe 16 ... and connecting between fine the rear pipe 15 ... intermediate portion of.
　車体フレームＦには、エンジンＥのエンジン本体１８が、前記メインパイプ１３における後半傾斜部１３ｂの下部にエンジンハンガ（図示せず）を介して支持されるとともに前記ダウンパイプ１４の下部に設けられたエンジンハンガ１７で支持されるようにして搭載される。またエンジン本体１８の上方で前記車体フレームＦにおけるメインパイプ１３の前半傾斜部１３ａを跨ぐように燃料タンク１９が配置され、この燃料タンク１９は、前記メインパイプ１３における前半傾斜部１３ａの前端部および前記ダウンパイプ１４の上タンブ間にわたるスチフナ９１にラバー９２を介して支持される。その燃料タンク１９の後方には、前記車体フレームＦにおけるリヤパイプ１５…で支持されるようにしてタンデム型の乗車用シート２０が配置される。 In the vehicle body frame F, the engine body 18 of the engine E is supported at the lower portion of the rear half inclined portion 13b of the main pipe 13 via an engine hanger (not shown) and provided at the lower portion of the down pipe 14 It is mounted so as to be supported by the engine hanger 17. A fuel tank 19 is disposed above the engine body 18 so as to straddle the front inclined portion 13a of the main pipe 13 in the vehicle body frame F. This fuel tank 19 is a front end portion of the front inclined portion 13a in the main pipe 13 and The rubber is supported by a stiffener 91 extending between the upper and lower tabs of the down pipe 14 via a rubber 92. Behind the fuel tank 19, a tandem type passenger seat 20 is disposed so as to be supported by the rear pipes 15 of the vehicle body frame F.
　前記エンジン本体１８は、車幅方向に沿う軸線を有するクランクシャフト２１を回転自在に支承するクランクケース２２と、該クランクケース２２の前側上部に結合されて上方に立ち上がるシリンダブロック２３と、該シリンダブロック２３の上端に結合されるシリンダヘッド２４と、該シリンダヘッド２４の上端に結合されるヘッドカバー２５とを備える。 The engine body 18 has a crankcase 22 rotatably supporting a crankshaft 21 having an axis extending in the vehicle width direction, a cylinder block 23 coupled to a front upper portion of the crankcase 22 and rising upward, and the cylinder block A cylinder head 24 coupled to the upper end of the cylinder head 23 and a head cover 25 coupled to the upper end of the cylinder head 24 are provided.
　また前記エンジン本体１８の下部すなわちクランクケース２２には、後方に延びるミッションケース２６が連設されており、このミッションケース２６には、前記クランクシャフト２１からの回転動力を変速するための変速機（図示せず）が収容され、ミッションケース２６には出力軸２７が回転自在に支承される。 A transmission case 26 extending rearward is connected to a lower portion of the engine body 18, that is, the crankcase 22. The transmission case 26 is a transmission for changing rotational power from the crankshaft 21 ( (Not shown) is accommodated, and an output shaft 27 is rotatably supported on the transmission case 26.
　前記車体フレームＦのメインパイプ１３における後半傾斜部１３ｂの下部に連設された左右一対のピボットフレーム９３…には、後端で後輪ＷＲを軸支するスイングアーム２８の前端が支軸２９を介して揺動可能に支承されており、車体フレームＦのリヤパイプ１５および前記スイングアーム２８の後部間にはリヤクッションユニット３０が設けられる。 The left end of the swing arm 28 for supporting the rear wheel WR at the rear end supports the support shaft 29 at a pair of left and right pivot frames 93 connected to the lower part of the rear half inclined portion 13b of the main pipe 13 of the vehicle body frame F. A rear cushion unit 30 is provided between the rear pipe 15 of the vehicle body frame F and the rear portion of the swing arm 28 so as to be pivotally supported.
　前記後輪ＷＲには前記出力軸２７から回転動力が伝達されるものであり、出力軸２７のミッションケース２６からの突出端部に固着された駆動スプロケット３１と、前記後輪ＷＲの車軸に設けられた被動スプロケット３２とに、無端状のチェーン３３が巻き掛けられる。 The rotational power is transmitted from the output shaft 27 to the rear wheel WR, and provided on the drive sprocket 31 fixed to the end of the output shaft 27 projecting from the transmission case 26 and the axle of the rear wheel WR An endless chain 33 is wound around the driven driven sprocket 32.
　図２～図４を併せて参照して、前記フロントフォーク１１は、前輪ＷＦを下端部で軸支する左右一対の脚部３５，３５と、それらの脚部３５…の上端部間を連結するトップブリッジ３６（図１参照）と、該トップブリッジ３６よりも下方で前記両脚部３５…を連結するボトムブリッジ３７とを有し、トップブリッジ３６およびボトムブリッジ３７は前記ヘッドパイプ１２を上下から挟む位置に配置され、ヘッドパイプ１２で操向可能に支承されるようにして該ヘッドパイプ１２内に挿入されステアリング軸３８がトップブリッジ３６およびボトムブリッジ３７間に設けられる。またトップブリッジ３６には、バー状の操向ハンドル３９（図１参照）の長手方向中央部が取付けられる。 Referring also to FIGS. 2 to 4, the front fork 11 connects between a pair of left and right legs 35 and 35 pivotally supporting the front wheel WF at the lower end and the upper ends of the legs 35. A top bridge 36 (see FIG. 1) and a bottom bridge 37 connecting the two legs 35 below the top bridge 36, and the top bridge 36 and the bottom bridge 37 sandwich the head pipe 12 from above and below A steering shaft 38 is provided between the top bridge 36 and the bottom bridge 37 so as to be disposed at a position and inserted into the head pipe 12 so as to be steerably supported by the head pipe 12. Further, a longitudinal central portion of a bar-shaped steering handle 39 (see FIG. 1) is attached to the top bridge 36.
　前記脚部３５は、トップブリッジ３６およびボトムブリッジ３７に固定されるインナーチューブ４０と、該インナーチューブ４０の下部を嵌合せしめるアウターチューブ４１とで正立型に構成されるものであり、インナーチューブ４０の下部およびアウターチューブ４１の上部間に蛇腹状のブーツ４２が設けられ、脚部３５内に緩衝機構が内蔵される。また両脚部３５…におけるアウターチューブ４１…の下端部間に前輪ＷＦの車軸４３（図１参照）が支承される。 The leg portion 35 is constructed in an upright shape by an inner tube 40 fixed to the top bridge 36 and the bottom bridge 37 and an outer tube 41 to which the lower portion of the inner tube 40 is fitted. A bellows-like boot 42 is provided between the lower portion 40 and the upper portion of the outer tube 41, and a buffer mechanism is incorporated in the leg 35. Further, an axle 43 (see FIG. 1) of the front wheel WF is supported between lower ends of the outer tubes 41 in the two legs 35.
　前輪ＷＦはフロントフェンダ４５で上方から覆われるものであり、このフロントフェンダ４５は、前記前輪ＷＦを上方から覆うアップフェンダ４６と、前記前輪ＷＦを上方から覆うようにして前記アップフェンダ４６よりも下方に配置されるダウンフェンダ４７とで構成される。しかも前記アップフェンダ４６は、該アップフェンダ４６の後部を平面視で前記ダウンフェンダ４７の前部に重ねるようにして前記フロントフォーク１１の前後にわたって延びて前輪ＷＦを上方から覆うように形成される。 The front wheel WF is covered from above by a front fender 45. The front fender 45 is an up fender 46 that covers the front wheel WF from above, and a lower side than the up fender 46 so as to cover the front wheel WF from above. And a down fender 47 disposed at the Moreover, the up fender 46 is formed to extend over the front fork 11 and to cover the front wheel WF from above, with the rear of the up fender 46 overlapping the front of the down fender 47 in plan view.
　前記アップフェンダ４６は、上方に向けて膨らんだ円弧状の横断面形状を有するものであり、車幅方向で並ぶ一対のボルト４８，４８が図示しないカラーを介して前記アップフェンダ４６に下方から挿通されるとともに前記フロントフォーク１１におけるボトムブリッジ３７の前部に螺合され、図示しないカラーを介して前記アップフェンダ４６に下方から挿通されるボルト５０が前記ボトムブリッジ３７の後部の車幅方向中央部に螺合されることによって前記ボトムブリッジ３７に固定される。而して前記ボトムブリッジ３７は、前輪ＷＦに対する近接・離反が可能であるので、前記アップフェンダ４６は、前輪ＷＦに対する近接・離反を可能として前記フロントフォーク１１に支持されることになる。 The up fender 46 has an arc-like cross-sectional shape that bulges upward, and a pair of bolts 48, 48 aligned in the vehicle width direction is inserted into the up fender 46 from below via a collar (not shown) And a bolt 50 which is screwed to the front of the bottom bridge 37 in the front fork 11 and is inserted from below into the upfender 46 through a collar (not shown) is a central portion in the vehicle width direction of the rear of the bottom bridge 37 Are fixed to the bottom bridge 37 by screwing. Since the bottom bridge 37 is capable of approaching and separating from the front wheel WF, the up fender 46 is supported by the front fork 11 so as to be capable of approaching and separating from the front wheel WF.
　また前記アップフェンダ４６の左右両側には、前記フロントフォーク１１が備える左右一対の脚部３５…のうち前記ブーツ４２…が設けられる部分を避けるように幅方向内方に凹んで横断面円弧状となる湾曲側壁部４６ａ，４６ａが設けられる。 Further, on the left and right sides of the up fender 46, the pair of left and right legs 35 provided on the front fork 11 is recessed inward in the width direction so as to avoid the portion where the boots 42 are provided, Curved side walls 46a, 46a are provided.
　図５および図６を併せて参照して、前記ダウンフェンダ４７は、上方に膨らんだ円弧状の横断面形状を有して前輪ＷＦに上方から対向する天井壁部４７ａと、該天井壁部４７ａの左右両側に一体に連設される左右一対の側壁部４７ｂ，４７ｂとを有して横断面略Ｕ字状に形成されるものであり、このダウンフェンダ４７の前部が、前記フロントフォーク１１における両脚部３５…のアウターチューブ４１…に支持される。而してアウターチューブ４１…は、前記前輪ＷＦに対する上下方向相対位置が一定であるので、前記ダウンフェンダ４７は、前記前輪ＷＦに対する上下方向相対位置を一定として前記フロントフォーク１１に支持されることになる。 With reference to FIG. 5 and FIG. 6 together, the downfender 47 has a ceiling wall 47a having an arc-like cross-sectional shape inflated upward and facing the front wheel WF from above, and the ceiling wall 47a. The left and right side walls 47b and 47b are integrally formed continuously on both the left and right sides of the front cover 11 and formed in a substantially U-shaped cross section. The front part of the down fender 47 is the front fork 11 Are supported by outer tubes 41 of both legs 35. Since the outer tubes 41 have a constant vertical relative position to the front wheel WF, the down fender 47 is supported by the front fork 11 with the vertical relative position to the front wheel WF constant. Become.
　而して前輪ＷＦに対する近接・離反が可能である前記アップフェンダ４６が、該アップフェンダ４６の後部を平面視で前記ダウンフェンダ４７の前部に重ねるようにして前記フロントフォーク１１の前後にわたって延びるように形成され、前輪ＷＦに対する上下方向相対位置を一定としたダウンフェンダ４７が、フロントフォーク１１の後方で前輪ＷＦを上方から覆うようにしてアップフェンダ４６よりも下方に配置されているので、乗車用シート２０に乗員が乗車したときには、図７で示すように、上下方向に伸縮可能である前記脚部３５…が収縮し、アップフェンダ４６がダウンフェンダ４７に近接する。この際、前記アップフェンダ４６の後端下縁４６ｂが前記ダウンフェンダ４７の前端上縁４７ｃよりも下方に位置するように前記アップフェンダ４６が形成される。すなわち乗員乗車時に前記ダウンフェンダ４７の前端上縁４７ｃを通る水平線Ｌ１よりも下方に前記アップフェンダ４６の後端下縁４６ｂが配置される。 The up fender 46 capable of coming in and out of the front wheel WF is extended so as to overlap the front and rear of the front fork 11 so that the rear of the up fender 46 overlaps the front of the down fender 47 in plan view. The down fender 47, which is formed on the front wheel WF and has a constant vertical relative position to the front wheel WF, is disposed below the up fender 46 so as to cover the front wheel WF from the top behind the front fork 11. When the occupant gets on the seat 20, the leg portions 35 which can be extended and contracted in the vertical direction contract as shown in FIG. 7, and the up fender 46 approaches the down fender 47. At this time, the upfender 46 is formed such that the lower end 46b of the rear end of the upfender 46 is located below the upper end 47c of the front end of the downfender 47. That is, the rear end lower edge 46b of the upfender 46 is disposed below the horizontal line L1 passing through the front end upper edge 47c of the downfender 47 when the passenger gets on the vehicle.
　なお乗員として、この実施の形態では４０ｋｇ以上の体重の乗員を想定しており、したがって４０ｋｇ以上の体重の乗員の乗車時にフロントフォーク１１が収縮することで、アップフェンダ４６の後端下縁４６ｂおよびダウンフェンダ４７の前端上縁４７ｃの上下方向相対位置が上述の関係となる。 In this embodiment, an occupant having a weight of 40 kg or more is assumed as an occupant, and therefore, the front fork 11 contracts when the occupant having a weight of 40 kg or more gets on the rear end lower edge 46 b of the upfender 46 and The vertical relative position of the front end upper edge 47 c of the down fender 47 has the above-described relationship.
　また前記ダウンフェンダ４７は、その後端下縁４７ｄが前記前輪ＷＦの回転軸線Ｃすなわち前輪ＷＦの車軸４３の中心軸線よりも下方に位置するように形成されており、前記回転軸線Ｃを通る水平線Ｌ２よりも下方に前記ダウンフェンダ４７の後端下縁４７ｄが配置される。 The downfender 47 is formed such that its lower end lower edge 47d is located below the rotation axis C of the front wheel WF, that is, the central axis of the axle 43 of the front wheel WF, and a horizontal line L2 passing through the rotation axis C. A rear end lower edge 47 d of the down fender 47 is disposed below the lower end.
　前記フロントフォーク１１の前記脚部３５…が、図８で示すように、最大限収縮すると、前記脚部３５…を避けるように幅方向内方に凹んで前記アップフェンダ４６の左右両側に設けられた湾曲側壁部４６ａ…が前記ダウンフェンダ４７の前部に近接することになる。そこでダウンフェンダ４７の前部および前記湾曲側壁部４６ａ…の干渉を回避すべく、天井壁部４７ａならびに該天井壁部４７ａの左右両側に一体に連設される左右一対の側壁部４７ｂ，４７ｂを有する前記ダウンフェンダ４７の前部には、前記側壁部４７ｂ…の上部から前記天井壁部４７ａにかけて後方側に凹む逃げ凹部５２が、ダウンフェンダ４７の前部に前記湾曲側壁部４６ａ…が干渉するのを避けるようにして形成される。 The legs 35 of the front fork 11 are provided on the left and right sides of the upfender 46 so as to be recessed inwardly in the width direction so as to avoid the legs 35 as shown in FIG. The curved side wall portions 46 a are close to the front of the down fender 47. Therefore, in order to avoid interference between the front portion of the downfender 47 and the curved side wall portions 46a, the ceiling wall portion 47a and a pair of left and right side wall portions 47b and 47b integrally provided on both left and right sides of the ceiling wall portion 47a. In the front portion of the downfender 47, the relief recess 52 recessed rearward from the top of the side wall portion 47b to the ceiling wall portion 47a interferes with the curved side wall portion 46a in the front portion of the downfender 47 It is formed to avoid the.
　また前記ダウンフェンダ４７における前記天井壁部４７ａの前部上面には、前記アップフェンダ４６が前記前輪ＷＦに近接したときに前記アップフェンダ４６の後部両側の一部を収容可能として下方に凹んだ左右一対の凹部９４，９４が前後方向に延びて形成される。 Further, on the front upper surface of the ceiling wall 47a of the down fender 47, left and right recessed so as to be able to accommodate parts of both rear sides of the up fender 46 when the up fender 46 approaches the front wheel WF. A pair of recesses 94 are formed extending in the front-rear direction.
　前記アップフェンダ４６の後部の後方で車体フレームＦのダウンパイプ１４には、前記アップフェンダ４６の後端下縁４６ｂよりも側面視で上方に位置するようにして電装品であるホーン９５が取付けられる。 A horn 95, which is an electric component, is attached to the down pipe 14 of the vehicle body frame F behind the rear of the up fender 46 so as to be positioned above the rear lower end 46 b of the up fender 46 in a side view. .
　前記ダウンフェンダ４７を支持するために、前記フロントフォーク１１における脚部３５のアウターチューブ４１…には、その上端寄りの前部から前方に突出する第１支持突部５３…と、第１支持突部５３…よりも上方の後部から後方に突出する第２支持突部５４…とが突設される。 In order to support the downfender 47, the outer tubes 41 of the legs 35 of the front fork 11 have first support projections 53 projecting forward from the front near the upper end, and the first support projections The second support protrusions 54 that project rearward from the rear above the portions 53.
　第１支持突部５３…および第２支持突部５４…にはステー５５が締結されており、前記ダウンフェンダ４７の前端部は該ステー５５を介して前記アウターチューブ４１…に支持される。 A stay 55 is fastened to the first support projection 53 and the second support projection 54, and the front end of the downfender 47 is supported by the outer tube 41 via the stay 55.
　前記ステー５５は、前端部が第１支持突部５３…に締結されるとともに前記アウターチューブ４１…を車幅方向内方側で回り込んで後方に延びる左右一対の支持板部５５ａ，５５ａと、前記脚部３５…の後方で前記支持板部５５ａ…の後端から上方に立ち上がって前記ダウンフェンダ４７における側壁部４７ｂ…の内面に対向する左右一対の立ち上がり板部５５ｂ，５５ｂと、両立ち上がり板部５５ｂ…の上端間を連結して前記ダウンフェンダ４７における天井壁部４７ａの内面に近接、対向する円弧状の連結板部５５ｃとを一体に有するように形成される。 The stay 55 has a pair of left and right support plate portions 55a, 55a having a front end portion fastened to the first support projection 53, and extending around the outer tube 41 inward in the vehicle width direction and extending backward; A pair of left and right rising plates 55b, 55b that rise upward from the rear end of the support plate 55a at the rear of the legs 35 and face the inner surface of the side walls 47b of the downfender 47, and both rising plates The upper ends of the portions 55b are connected to each other so as to integrally have an arc-shaped connecting plate 55c close to and opposed to the inner surface of the ceiling wall 47a of the downfender 47.
　前記支持板部５５ａ…の前端部には第１ウエルドナット５６，５６が固着されており、第１支持突部５３…に挿通されるボルト５７，５７を第１ウエルドナット５６…に螺合して締めつけることで前記支持板部５５ａ…の前端部すなわち前記ステー５５の前端部が第１支持突部５３…に締結される。 First weld nuts 56 are fixed to the front end of the support plate portions 55a, and bolts 57 inserted through the first support projections 53 are screwed onto the first weld nuts 56. The front end portion of the support plate portion 55a, that is, the front end portion of the stay 55 is fastened to the first support projection 53 by clamping.
　また前記支持板部５５ａ…の後端には、前記ダウンフェンダ４７における側壁部４７ｂ…の前端下部内面および前記支持板部５５ａ…の後端外面間に挟まれる鍔部５８ａ，５８ａを有する第２ウエルドナット５８，５８が固着されており、前記側壁部４７ｂ…の前端下部に挿通されるボルト５９，５９を第２ウエルドナット５８…に螺合して締めつけることで、前記側壁部４７ｂ…の前端下部が前記ステー５５に締結される。 Further, at the rear end of the support plate 55a, there is provided a second flange 58a, 58a sandwiched between the inner surface of the front end lower portion of the side wall 47b of the downfender 47 and the rear end outer surface of the support plate 55a. Weld nuts 58, 58 are fixed, and bolts 59, 59 inserted into lower end portions of the side walls 47b are screwed on and tightened to the second weld nuts 58, so that the front ends of the side walls 47b are The lower part is fastened to the stay 55.
　さらに第２支持突部５４に対応する部分で前記立ち上がり板部５５ｂ，５５ｂの上端部には、前記ダウンフェンダ４７における側壁部４７ｂ…の前端上部内面および前記立ち上がり板部５５ｂ，５５ｂの上端部外面間に挟まれる鍔部６０ａ，６０ａを有する第３ウエルドナット６０，６０が固着されており、前記鍔部６０ａ…との間に前記側壁部４７ｂ…の前端上部を挟む第２支持突部５４…および前記側壁部４７ｂ…の前端上部に挿通されるボルト６１，６１を第３ウエルドナット６０…に螺合して締めつけることで、前記ステー５５の前記立ち上がり板部５５ｂ…の上端部および前記側壁部４７ｂ…の前端上部が共締めで第２支持突部５４…に締結される。 Furthermore, the upper end portions of the rising plate portions 55b, 55b at portions corresponding to the second support protrusions 54, the inner surfaces of the front end upper portions of the side wall portions 47b in the downfender 47 and the upper end portion outer surface of the rising plate portions 55b, 55b A third support nut 54 is secured to the third weld nut 60 having a flange 60a and a flange 60a, and the second support projection 54 sandwiches the upper end of the front end of the side wall 47b with the flange 60a. And the upper end portion of the rising plate portion 55b of the stay 55 and the side wall portion by screwing and tightening the bolts 61, 61 inserted into the upper end of the front end of the side wall portions 47b to the third weld nut 60. The front end upper portions of 47b are tightened together to the second support protrusions 54.
　前記ダウンフェンダ４７の前端部下面には、下方に突出する突部６２が設けられるものであり、この突部６２は、前記ステー５５の一部である立ち上がり板部５５ｂ…および連結板部５５ｃで構成される。また前記ダウンフェンダ４７よりも前方で前記アップフェンダ４６の下面には、車幅方向に延びるリブ６３が設けられる。 The lower end of the front end portion of the down fender 47 is provided with a protrusion 62 projecting downward, and the protrusion 62 is a rising plate portion 55b which is a part of the stay 55 and a connecting plate portion 55c. Configured Further, a rib 63 extending in the vehicle width direction is provided on the lower surface of the upfender 46 in front of the downfender 47.
　図９～図１１を併せて参照して、前記フロントフォーク１１のトップブリッジ３６およびボトムブリッジ３７には、ヘッドライト用ステー７０が支持されるものであり、このヘッドライト用ステー７０は、メインパイプ７１と、該メインパイプ７１が取付けられる下部取付け板７２と、前記メインパイプ７１に一端が固着される左右一対のサブパイプ７３，７３と、両サブパイプ７３…の中間部に固着される支持板７４，７４と、両サブパイプ７３…の他端が共通に固着される上部取付け板７５とを備える。 9 to 11, a headlight stay 70 is supported by the top bridge 36 and the bottom bridge 37 of the front fork 11. The headlight stay 70 is a main pipe. 71, a lower mounting plate 72 to which the main pipe 71 is attached, a pair of left and right sub pipes 73 and 73 whose one end is fixed to the main pipe 71, and a support plate 74 fixed to the middle part of both sub pipes 73, 74 and an upper mounting plate 75 to which the other ends of the two sub pipes 73 are fixed in common.
　前記メインフパイプ７１は、下方に開いた略Ｕ字状に形成される湾曲部７１ａと、湾曲部７１ａの両端下部からフロントフォーク１１のボトムブリッジ３７側に延びる左右一対の腕部７１ｂ，７１ｂとを一体に有するように形成される。また左右一対のサブパイプ７３，７３の一端は前記湾曲部７１ａの左右両側中間部に一端が固着されてフロントフォーク１１のトップブリッジ３６側に延出されており、前記メインパイプ７１の両腕部７１ｂ，７１ｂが下部取付け板７２に固着され、前記両サブパイプ７３…の他端が上部取付け板７５に固着される。 The main pipe 71 includes a curved portion 71a formed in a substantially U shape opened downward, and a pair of left and right arm portions 71b and 71b extending from lower ends of the curved portion 71a toward the bottom bridge 37 of the front fork 11. It is formed to have it in one. Further, one end of a pair of left and right sub pipes 73 is fixed to the left and right middle portions of the curved portion 71a and is extended to the top bridge 36 side of the front fork 11, and both arm portions 71b of the main pipe 71 , 71b are fixed to the lower mounting plate 72, and the other ends of the sub pipes 73 are fixed to the upper mounting plate 75.
　前記下部取付け板７２は、前記ボトムブリッジ３７の上面に上方から当接されるものであり、この下部取付け板７２に固着されて該下部取付け板７２から下方に突出する一対のピン７６，７６の下部が前記ボトムブリッジ３７に設けられる一対の差し込み孔７７，７７（図３参照）に差し込まれる。一方、前記上部取付け板７５は、前記トップブリッジ３６の下面に下方から当接されるものであり、この上部取付け板７５に固着されて該上部取付け板７５から下方に突出する一対のピン７８，７８の上部が前記トップブリッジ３６に設けられる一対の差し込み孔（図示せず）に差し込まれる。これにより前記フロントフォーク１１のトップブリッジ３６およびボトムブリッジ３７にヘッドライト用ステー７０が支持されることになる。 The lower mounting plate 72 is brought into contact with the upper surface of the bottom bridge 37 from the upper side, and is fixed to the lower mounting plate 72 so that a pair of pins 76 and 76 which project downward from the lower mounting plate 72. The lower part is inserted into a pair of insertion holes 77, 77 (see FIG. 3) provided in the bottom bridge 37. On the other hand, the upper mounting plate 75 is in contact with the lower surface of the top bridge 36 from below, and is fixed to the upper mounting plate 75 and a pair of pins 78 projecting downward from the upper mounting plate 75, The upper part of 78 is inserted into a pair of insertion holes (not shown) provided in the top bridge 36. Thus, the headlight stay 70 is supported by the top bridge 36 and the bottom bridge 37 of the front fork 11.
　前記支持板７４の前部には挿通孔７９，７９が設けられており、正面視で前記メインパイプ７１の湾曲部７１ａ内に配置されるヘッドライト８０の両側面が前記挿通孔７９…に挿通されるボルト８１…で前記支持板７４に支持される。また前記支持板７４の後部には取付け孔８２，８２が設けられており、前記ヘッドライト８０の左右両側に配置されるウインカ８３，８３が、前記取付け孔８２…を用いて前記支持板７４に取付けられる。 Insertion holes 79, 79 are provided at the front of the support plate 74, and both side surfaces of the headlight 80 disposed in the curved portion 71a of the main pipe 71 are inserted through the insertion holes 79 in a front view. The support plate 74 is supported by bolts 81. Further, mounting holes 82, 82 are provided at the rear of the support plate 74, and blinkers 83, 83 arranged on the left and right sides of the headlight 80 are attached to the support plate 74 using the mounting holes 82. It is attached.
　また前記両サブパイプ８３…間には前記ヘッドライト８０の後方に位置するようにして計器支持ステー８４が設けられており、前記ヘッドライト８０の後方斜め上方に配置される計器ユニット８５が前記計器支持ステー８４および前記トップブリッジ３６で支持される。 Further, an instrument support stay 84 is provided between the two sub pipes 83 so as to be located behind the headlight 80, and an instrument unit 85 disposed obliquely above the rear of the headlight 80 supports the instrument. It is supported by the stay 84 and the top bridge 36.
　次にこの第１の実施の形態の作用について説明すると、前輪ＷＦを上方から覆うフロントフェンダ４５を、フロントフォーク１１の後方で前輪ＷＦを上方から覆うとともに前輪ＷＦに対する上下方向相対位置を一定としてフロントフォーク１１に支持されるダウンフェンダ４７と協働して構成するアップフェンダ４６が、該アップフェンダ４６の後部を平面視でダウンフェンダ４７の前部に重ねるようにしてフロントフォーク１１の前後にわたって延びて前輪ＷＦを上方から覆うように形成されるとともに前輪ＷＦに対する近接・離反を可能としてフロントフォーク１１に支持され、乗員乗車時の前記アップフェンダ４６の後端下縁４６ｂがダウンフェンダ４７の前端上縁４７ｃよりも下方に位置するので、前輪ＷＦから撥ね上げられた水や泥が図７の矢印で示すようにダウンフェンダ４７の前端から後方に飛散してもアップフェンダ４６の後端部でその泥や水を受けることを可能とし、前輪ＷＦから撥ね上げられた水や泥が乗員側に達するのを極力防止することができる。 Next, the operation of the first embodiment will be described. The front fender 45 covering the front wheel WF from above is covered with the front wheel WF behind the front fork 11 from above while the vertical relative position to the front wheel WF is fixed. An upfender 46 configured in cooperation with a downfender 47 supported by the forks 11 extends over the front and back of the front fork 11 so that the rear of the upfender 46 overlaps the front of the downfender 47 in plan view. It is formed to cover the front wheel WF from above and is supported by the front fork 11 so that it can approach and move away from the front wheel WF, and the rear end lower edge 46b of the upfender 46 at the time of getting on the passenger is the front end upper edge of the downfender 47 Because it is located lower than 47c, the water that has been splashed and raised from the front wheel WF Even if the mud splashes backward from the front end of the down fender 47 as shown by the arrow in FIG. 7, it is possible to receive the mud and water at the rear end of the up fender 46 and the water and splashed up from the front wheel WF Mud can be prevented as much as possible from reaching the passenger side.
　それに対して図１２で示すように、フロントフェンダ４５′をダウンフェンダ４７と協働して構成するアップフェンダ４６′の乗員乗車時の後端下縁４６′ｂがダウンフェンダ４７の前端上縁４７ｃよりも上方に位置する場合、すなわち前記ダウンフェンダ４７の前端上縁４７ｃを通る水平線Ｌ１よりも上方に前記アップフェンダ４６′の後端下縁４６′ｂが在る場合には、前輪ＷＦから撥ね上げられた水や泥が図１２の矢印で示すようにダウンフェンダ４７の前端から後方に飛散すると、アップフェンダ４６′の後端部で受けられない水や泥が乗員側に飛散するが、上述のように、乗員乗車時の前記アップフェンダ４６の後端下縁４６ｂがダウンフェンダ４７の前端上縁４７ｃよりも下方に位置することによって、前輪ＷＦから撥ね上げられた水や泥が乗員側に達するのを極力防止することができるのである。 On the other hand, as shown in FIG. 12, the rear end lower edge 46 ′ b of the up fender 46 ′ that constitutes the front fender 45 ′ in cooperation with the down fender 47 is the front end upper edge 47 c of the down fender 47. When the lower end 46'b of the rear end of the up fender 46 'is above the horizontal line L1 passing through the front upper end 47c of the down fender 47, the front wheel WF will When raised water or mud scatters rearward from the front end of the downfender 47 as shown by the arrow in FIG. 12, water or mud not received at the rear end of the upfender 46 'scatters toward the occupant, but When the rear end lower edge 46 b of the up fender 46 is positioned lower than the front upper edge 47 c of the down fender 47 as shown in FIG. Water or mud it is possible to minimize prevented from reaching the passenger side.
　またフロントフォーク１１が備える左右一対の脚部３５を避けるように幅方向内方に凹んで横断面円弧状となる湾曲側壁部４６ａ，４６ａがアップフェンダ４６の左右両側に設けられ、上方に膨らんだ円弧状の横断面形状を有して前輪ＷＦに上方から対向する天井壁部４７ａならびに該天井壁部４７ａの左右両側に一体に連設される左右一対の側壁部４７ｂを有するダウンフェンダ４７の前部に、アップフェンダ４６が前輪ＷＦに近接したときに前記湾曲側壁部４６ａが前記ダウンフェンダ４７の前部と干渉するのを避けるための逃げ凹部５２が、左右一対の前記側壁部４７ｂ…の上部から天井壁部４７ａにかけて後方側に凹むようにして形成されるので、アップフェンダ４６およびダウンフェンダ４７の相互干渉が生じるのを防止することができる。 Curved side walls 46a and 46a are provided on the left and right sides of the up fender 46 so that the side walls 46a and 46a are concaved inward in the width direction so as to avoid a pair of left and right legs 35 of the front fork 11 and bulge upward A front of a down fender 47 having an arc-shaped cross-sectional shape and having a ceiling wall 47a facing the front wheel WF from above and a pair of side walls 47b integrally connected on both left and right sides of the ceiling wall 47a The relief recess 52 for preventing the curved side wall portion 46a from interfering with the front portion of the down fender 47 when the up fender 46 approaches the front wheel WF, the upper portion of the pair of left and right side wall portions 47b. From the rear to the ceiling wall 47a so that mutual interference between the upfender 46 and the downfender 47 is prevented. Can.
　また前記ダウンフェンダ４７における前記天井壁部４７ａの前部上面に、前記アップフェンダ４６が前記前輪ＷＦに近接したときに前記アップフェンダ４６の後部両側の一部を収容可能として下方に凹んだ左右一対の凹部９４，９４が前後方向に延びて形成されるので、アップフェンダ４６およびダウンフェンダ４７の相互干渉が生じるのを防止しつつアップフェンダ４６をダウンフェンダ４７側により近接させることができ、前輪ＷＦからの水や泥の跳ね上げを充分に防止することができる。 Further, on the front upper surface of the ceiling wall portion 47a of the down fender 47, a pair of left and right recessed downward so as to be able to accommodate a part of both rear sides of the up fender 46 when the up fender 46 approaches the front wheel WF. Since the recesses 94, 94 are formed to extend in the front-rear direction, the upfender 46 can be brought closer to the downfender 47 side while preventing the upfender 46 and the downfender 47 from interfering with each other. Water and mud can be sufficiently prevented from splashing.
　またダウンフェンダ４７の前端部下面に、下方に突出する突部６２が設けられるので、突部６２が設けられる部分ではダウンフェンダ４７および前輪ＷＦ間の間隔を狭くして、走行時に前輪ＷＦの回転に伴って前方に飛散する泥等がダウンフェンダ４７の前端から上面側に回り込み、ダウンフェンダ４７の上面が汚れることを抑制することができる。 In addition, since the lower projecting portion 62 is provided on the lower surface of the front end portion of the down fender 47, the space between the down fender 47 and the front wheel WF is narrowed at the portion where the projecting portion 62 is provided Due to this, mud and the like that scatter forward move around from the front end of the down fender 47 to the upper surface side, and it is possible to suppress that the upper surface of the down fender 47 becomes dirty.
　しかも前記突部６２が、ダウンフェンダ４７をフロントフォーク１１の脚部３５…に固定するためのステー５５の一部で構成されるので、ダウンフェンダ４７の下面形状を特別に変更することなく、ダウンフェンダ４７の上面が汚れることを抑制する効果を得ることができる。 Moreover, since the projection 62 is constituted by a part of the stay 55 for fixing the down fender 47 to the legs 35 of the front fork 11, the shape of the down fender 47 can be lowered without specially changing the lower surface shape. The effect of suppressing the contamination of the upper surface of the fender 47 can be obtained.
　また前記アップフェンダ４６の後部の後方で車体フレームＦのダウンパイプ１４には、前記アップフェンダ４６の後端下縁４６ｂよりも側面視で上方に位置するようにしてホーン９５が取付けられるので、前輪ＷＦから跳ね上がられる水や泥が前記ホーン９５に付着するのを防止することができる。 Further, since the horn 95 is attached to the down pipe 14 of the vehicle body frame F at the rear of the rear of the up fender 46 so as to be positioned above the rear lower end 46 b of the up fender 46 in a side view, It is possible to prevent water and mud splashed from WF from adhering to the horn 95.
　また前記ダウンフェンダ４７は、その後端下縁４７ｄが前輪ＷＦの回転軸線Ｃよりも下方に位置するように形成されるので、前輪ＷＦから後方に撥ね上げられる泥や水がエンジンＥおよび乗員側に飛散するのをダウンフェンダ４７の後端部によって極力抑制することができる。 Further, since the lower fender 47 is formed so that the lower end lower edge 47 d is positioned below the rotation axis C of the front wheel WF, the mud and water splashed and raised from the front wheel WF to the engine E and the occupant side Scattering can be suppressed as much as possible by the rear end portion of the down fender 47.
　またダウンフェンダ４７よりも前方でアップフェンダ４６の下面に、車幅方向に延びるリブ６３が設けられるので、走行時に前方から前輪ＷＦの上方に飛散してアップフェンダ４６の内面に付着した泥等が後方に飛び散らないようにすることができ、乗員まで泥が到達するのを防止することができる。 Further, since a rib 63 extending in the vehicle width direction is provided on the lower surface of the upfender 46 in front of the downfender 47, mud etc. that scatters from the front to the upper side of the front wheel WF and adheres to the inner surface of the upfender 46 It can be prevented from splashing backwards and mud can be prevented from reaching the occupants.
第２の実施の形態Second embodiment
　本発明の第２の実施の形態について図１３および図１４を参照しながら説明するが、上記第１の実施の形態に対応する部分には同一の参照符号を付して図示するのみとし、詳細な説明は省略する。 Although the second embodiment of the present invention will be described with reference to FIGS. 13 and 14, the parts corresponding to those of the first embodiment are only illustrated with the same reference numerals, Description is omitted.
　前記フロントフォーク１１が備える左右一対の脚部３５…および前記ダウンフェンダ４７の前方には、前記両脚部３５…を前方から覆う左右一対の導風部材６５，６５が、固定配置される。 A pair of left and right air guide members 65, 65 covering the both legs 35 from the front are fixedly arranged in front of the pair of left and right legs 35 and the down fender 47 provided in the front fork 11.
　この導風部材６５は、その平面視では後方に向かうにつれて車幅方向外方に位置するようにして車幅方向外方に膨らんだ形状を有して、前記フロントフォーク１１における脚部３５の前方に配置されるものであり、図１４の矢印で示すように、導風部材６５の側方を通過した走行風は、前記脚部３５の後方では該脚部３５の後方側で渦が生じることで発生する負圧によって車幅方向内方側に引き寄せられ、ダウンフェンダ４７の後方のエンジンＥ側に走行風を流すことができる。 The air guide member 65 has a shape that is expanded outward in the vehicle width direction so as to be positioned outward in the vehicle width direction as it goes to the rear in plan view, and the front of the leg portion 35 in the front fork 11 is As shown by the arrow in FIG. 14, the traveling wind that has passed the side of the air guide member 65 causes a vortex to occur behind the leg 35 on the rear side of the leg 35. By the negative pressure generated at this time, the traveling wind can be made to flow toward the engine E side behind the down fender 47 by being drawn inward in the vehicle width direction.
　また前記導風部材６５は、その側面視形状が、前方に突出する前方突部６５ａと、該前方突部６５ａから後上がりに延びる上傾斜部６５ｂと、前記前方突部６５ａから後下がりに延びる下傾斜部６５ｃとを有し、前方突部６５ａ、上傾斜部６５ｂおよび下傾斜部６５ｃが略Ｖ字状となるように配置される。 Further, the air guide member 65 has a side view shape, a front protrusion 65 a protruding forward, an upper inclined portion 65 b extending upward from the front protrusion 65 a, and extension extending downward from the front protrusion 65 a A lower inclined portion 65c is provided, and the front projection 65a, the upper inclined portion 65b, and the lower inclined portion 65c are arranged to be substantially V-shaped.
　而して前方突部６５ａに走行風が当たったときには上傾斜部６５ｂおよび下傾斜部６５ｃが支持作用を発揮し、上傾斜部６５ｂに走行風が当たったときには下傾斜部６５ｃが支持作用を発揮し、下傾斜部６５ｃに走行風が当たった時には上傾斜部６５ｂが支持作用を発揮するようにして走行風に対して充分な耐久性を有する。 The upper inclined portion 65b and the lower inclined portion 65c exert a supporting action when the traveling wind hits the front projection 65a, and the lower inclined portion 65c exhibits the support action when the traveling wind hits the upper inclined portion 65b. When the traveling wind strikes the lower inclined portion 65c, the upper inclined portion 65b exerts a supporting function to have sufficient durability against the traveling wind.
　また前記導風部材６５は、上傾斜部６５ｂおよび下傾斜部６５ｃの後部間を連結する平板状の被取付け部６５ｄを一体に有しており、その被取付け部６５ｄの下部が、フロントフォーク１１における脚部３５のアウターチューブ４１…の上端寄りの前部に設けられて前方に突出する第１支持突部５３に、前記ステー５５における支持板部５５ａの前端部ともに共締めで締結するようにしてボルト５７で締結され、第１支持突部５３よりも上方で前記アウターチューブ４１の前部から前方に突出する第３支持突部６６にボルト６７で締結される。 Further, the air guide member 65 integrally has a flat plate-like attached portion 65d connecting between the rear of the upper inclined portion 65b and the lower inclined portion 65c, and the lower portion of the attached portion 65d is the front fork 11 The front end portion of the support plate portion 55a of the stay 55 is fastened together to the first support projection 53 provided on the front portion of the outer tube 41 of the leg portion 35 at the upper end close to the upper end and projecting forward. And the third support projection 66 projecting forward from the front of the outer tube 41 above the first support projection 53 is fastened by a bolt 67.
　この第２の実施の形態によれば、フロントフォーク１１が備える左右一対の脚部３５およびダウンフェンダ４７の前方に、左右一対の前記脚部３５，３５を前方から覆う左右一対の導風部材６５，６５が、前方からの走行風を前記両脚部３５…の後方のエンジンＥ側に導くようにして固定配置されるので、ダウンフェンダ４７の後方のエンジンＥ側に走行風を流すことができる。 According to the second embodiment, a pair of left and right air guide members 65 covering the pair of left and right legs 35 and 35 from the front in front of the pair of left and right legs 35 and the down fender 47 provided in the front fork 11 , 65 are arranged so as to guide the traveling wind from the front to the engine E side behind the two legs 35..., The traveling wind can be flowed to the engine E side behind the down fender 47.
　また導風部材６５の側面視形状が、前方に突出する前方突部６５ａと、該前方突部６５ａから後上がりに延びる上傾斜部６５ｂと、前記前方突部６５ａから後下がりに延びる下傾斜部６５ｃとを有して略Ｖ字状に形成されるので、導風部材６５に、走行風に対する充分な耐久性を付与することができる。 In addition, the side view shape of the air guide member 65 includes a front protrusion 65a projecting forward, an upper inclined portion 65b extending upward from the front projection 65a, and a lower inclined portion extending rearward from the front projection 65a. The air guide member 65 is formed in a substantially V-shape, so that the wind guide member 65 can be provided with sufficient durability against the traveling wind.
第３の実施の形態Third embodiment
　本発明の第３の実施の形態のダウンフェンダについて図１５を参照しながら説明すると、このダウンフェンダ４７の後部は、その車幅方向に沿う幅を下方に向かうにつれて広くするように形成される。すなわちダウンフェンダ４７の後部両側には側方に張り出す左右一対の張出部４７ｅ，４７ｅが一体に形成されており、それらの張出部４７ｅ…の側方張出量が後方に向かうにつれて大きくなるように設定される。 The downfender according to the third embodiment of the present invention will be described with reference to FIG. 15. The rear of the downfender 47 is formed so as to widen in the downward direction along the vehicle width direction. That is, on the both sides of the rear part of the down fender 47, a pair of left and right overhangs 47e and 47e are integrally formed, and the amount of side overhang of the overhangs 47e... Is set to be
　この第３の実施の形態によれば、前輪ＷＦ（第１の実施の形態参照）から後方に撥ね上げられる泥や水がエンジンＥ（第１の実施の形態参照）および乗員側に飛散するのをダウンフェンダ４７の後部で効果的に抑制することができる。 According to the third embodiment, the mud or water splashed backward from the front wheel WF (see the first embodiment) is scattered to the engine E (see the first embodiment) and the occupant. Can be effectively suppressed at the rear of the down fender 47.
第４の実施の形態Fourth embodiment
　本発明の第４の実施の形態について図１６および図１７を参照しながら説明すると、ダウンフェンダ４７の後端部に、該ダウンフェンダ４７から左右両側に張り出す翼形状の整流板８８，８８が一体に設けられ、それらの整流板８８…にはルーバ８９，８９が設けられる。 The fourth embodiment of the present invention will be described with reference to FIGS. 16 and 17. At the rear end of the down fender 47, vane-shaped straightening vanes 88, 88 project from the down fender 47 to the left and right. Louvers 89 and 89 are provided on the straightening vanes 88.
　前記ルーバ８９は、複数の羽板８９ａ…を有するとともに、それらの羽板８９ａ…相互間に流通孔９０…が形成されるように構成されるのであるが、各羽板８９ａ…が、前輪ＷＦ側から見たときに前記流通孔９０…を覆う位置にあるようにして前記ルーバ８９が前記整流板８８に設けられる。 The louver 89 includes a plurality of wing plates 89a and so on and a flow through hole 90 is formed between the wing plates 89a and so on. The louver 89 is provided on the straightening vane 88 so as to cover the flow holes 90 when viewed from the side.
　この第４の実施の形態によれば、ダウンフェンダ４７の後端部から翼形状の整流板８８，８８が左右両側に張り出すので、ダウンフェンダ４７の後端を車幅方向に拡げることで、泥よけ性能を高めることができる。 According to the fourth embodiment, since the blade-shaped straightening vanes 88, 88 project from the rear end of the downfender 47 to the left and right sides, the rear end of the downfender 47 is expanded in the vehicle width direction. Mudguard performance can be enhanced.
　また整流板８８にルーバ８９が設けられるのでエンジンＥ側に走行風を導くことができ、しかもルーバ８９が有する複数の流通孔９０…は前輪ＷＦ側から見たときに羽板８９ａ…で覆われるので、前輪ＷＦ側からの泥等が流通孔９０…を経てエンジンＥ側に及ぶことを防止することができる。 Further, since the louver 89 is provided on the straightening vane 88, the traveling wind can be guided to the engine E side, and the plurality of flow through holes 90 of the louver 89 are covered with the wing plates 89a when viewed from the front wheel WF side. Therefore, it is possible to prevent mud and the like from the front wheel WF side from reaching the engine E side through the flow holes 90.
　以上、本発明の実施の形態について説明したが、本発明は上記実施の形態に限定されるものではなく、本発明の要旨を逸脱することなく種々の設計変更を行うことが可能である。 As mentioned above, although embodiment of this invention was described, this invention is not limited to the said embodiment, It is possible to perform various design changes, without deviating from the summary of this invention.
　たとえば上記実施の形態では乗員乗車時にアップフェンダの後端下縁がダウンフェンダの前端上縁よりも下方に位置するようにしたが、この場合、乗員が乗車いない状態でアップフェンダの後端下縁がダウンフェンダの前端上縁よりも上方に位置するようにしてもよい。そうすれば、アップフェンダおよびダウンフェンダの一方ありは両方をできるだけ小さくしつつ、乗員乗車時に本発明の効果を得ることができる。また乗員が乗車しない状態でもアップフェンダの後端下縁が、ダウンフェンダの前端上縁と同じ高さか、ダウンフェンダの前端上縁よりも下方に位置するようにしてもよく、この場合には、乗員の体重がたとえば４０ｋｇ以下であっても乗車時に本発明の効果を得ることができる。
  For example, in the above embodiment, the lower end of the rear end of the upfender is positioned lower than the upper end of the front end of the downfender when getting on the occupant, but in this case, the lower end of the rear end of the upfender when no occupant May be located above the front end upper edge of the down fender. Then, the effects of the present invention can be obtained at the time of getting on the passenger while making both the upfender and the downfender as small as possible. Also, the rear end lower edge of the up fender may be positioned at the same height as the front end upper edge of the down fender or below the front end upper edge of the down fender even in a state where the passenger does not get on. Even when the weight of the occupant is, for example, 40 kg or less, the effects of the present invention can be obtained at the time of getting on the vehicle.

Claims (13)

  1. 　前輪（ＷＦ）を上方から覆うフロントフェンダ（４５）が、前輪（ＷＦ）を下端部で軸支する左右一対の脚部（３５）を有するフロントフォーク（１１）に前記前輪（ＷＦ）に対する近接・離反を可能として支持されるとともに少なくとも前記フロントフォーク（１１）の前方で前記前輪（ＷＦ）を上方から覆うアップフェンダ（４６）と、前記フロントフォーク（１１）の後方で前記前輪（ＷＦ）を上方から覆うようにして前記アップフェンダ（４６）よりも下方に配置されるとともに前記前輪（ＷＦ）に対する上下方向相対位置を一定として前記フロントフォーク（１１）に支持されるダウンフェンダ（４７）とで構成される自動二輪車において、前記アップフェンダ（４６）が、その後部を平面視で前記ダウンフェンダ（４７）の前部に重ねるようにして前記フロントフォーク（１１）の前後にわたって延びるとともに乗員乗車時の前記アップフェンダ（４６）の後端下縁（４６ｂ）が前記ダウンフェンダ（４７）の前端上縁（４７ｃ）よりも下方に位置するように形成されることを特徴とする自動二輪車におけるフロントフェンダ構造。 The front fender (45) covering the front wheel (WF) from the upper side approaches the front wheel (WF) to the front fork (11) having a pair of left and right legs (35) pivotally supporting the front wheel (WF) at the lower end. An upfender (46) which is supported to be able to separate and which covers the front wheel (WF) from above at least in front of the front fork (11), and above the front wheel (WF) behind the front fork (11) And a downfender (47) disposed below the upfender (46) and supported by the front fork (11) with a constant relative position to the front wheel (WF). In the two-wheeled motor vehicle, the upfender (46) is in front of the downfender (47) in a plan view of the rear portion thereof. The lower end (46b) of the rear end of the upfender (46) extends forward and backward of the front fork (11) so as to overlap with the front fork (11) of the downfender (47). A front fender structure in a motorcycle, wherein the front fender structure is formed to be positioned below.
  2. 　左右一対の前記脚部（３５）を避けるように幅方向内方に凹んで横断面円弧状となる湾曲側壁部（４６ａ）が前記アップフェンダ（４６）の左右両側に設けられ、前記ダウンフェンダ（４７）が、上方に膨らんだ円弧状の横断面形状を有して前記前輪（ＷＦ）に上方から対向する天井壁部（４７ａ）ならびに該天井壁部（４７ａ）の左右両側に一体に連設される左右一対の側壁部（４７ｂ）を有するように形成され、このダウンフェンダ（４７）の前部に、前記アップフェンダ（４６）が前記前輪（ＷＦ）に近接したときに前記アップフェンダ（４６）の前記湾曲側壁部（４６ａ）が前記ダウンフェンダ（４７）の前部と干渉するのを避けるための逃げ凹部（５２）が、左右一対の前記側壁部（４７ｂ）の上部から前記天井壁部（４７ａ）にかけて後方側に凹むようにして形成されることを特徴とする請求項１記載の自動二輪車におけるフロントフェンダ構造。 Curved side walls (46a) are provided on the left and right sides of the up fender (46) so as to be recessed inward in the width direction so as to avoid the pair of left and right legs (35) on the left and right sides of the up fender (46) 47) has an arc-shaped cross-sectional shape that bulges upward, and is integrally provided integrally on the left and right sides of the ceiling wall (47a) facing the front wheel (WF) from above and the ceiling wall (47a) It is formed to have a pair of left and right side wall portions (47b), and the upfender (46) is placed in front of the downfender (47) when the upfender (46) approaches the front wheel (WF). A relief recess (52) for avoiding interference between the curved side wall (46a) of the lower fender (47) and the ceiling wall from the top of the pair of left and right side walls (47b) (47a) A front fender structure of a motorcycle according to claim 1, characterized in that it is formed as concaved rearward over.
  3. 　前記天井壁部（４７ａ）の前部上面に、前記アップフェンダ（４６）が前記前輪（ＷＦ）に近接したときに前記アップフェンダ（４６）の後部両側の一部を収容可能として下方に凹んだ左右一対の凹部（９４）が前後方向に延びて形成されることを特徴とする請求項２記載の自動二輪車におけるフロントフェンダ構造。 The upper surface of the front wall of the ceiling wall (47a) is recessed downward so as to be able to accommodate part of the rear sides of the up fender (46) when the up fender (46) approaches the front wheel (WF) The front fender structure in a motorcycle according to claim 2, characterized in that a pair of left and right recesses (94) is formed extending in the front-rear direction.
  4. 　前記ダウンフェンダ（４７）の前端部下面に、下方に突出する突部（６２）が設けられ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におけるフロントフェンダ構造。 The front fender structure in a motorcycle according to any one of claims 1 to 3, wherein a protrusion (62) which protrudes downward is provided on a lower surface of a front end portion of the downfender (47).
  5. 　前記突部（６２）が、前記ダウンフェンダ（４７）を前記フロントフォーク（１１）の脚部（３５）に固定するためのステー（５５）の一部で構成されることを特徴とする請求項４記載の自動二輪車におけるフロントフェンダ構造。 An arrangement according to claim 1, characterized in that the projection (62) is part of a stay (55) for fixing the downfender (47) to the legs (35) of the front fork (11). The front fender structure in the motorcycle according to 4.
  6. 　前記アップフェンダ（４６）の後部の後方で車体フレーム（Ｆ）に、該アップフェンダ（４６）の後端下縁（４６ｂ）よりも側面視で上方に位置するようにして電装品（９５）が取付けられることを特徴とする請求項１～５のいずれかに記載の自動二輪車におけるフロントフェンダ構造。 The electric component (95) is positioned on the vehicle body frame (F) behind the rear of the upfender (46) and above the rear lower end (46b) of the upfender (46) in a side view. The front fender structure in a motorcycle according to any one of claims 1 to 5, which is mounted.
  7. 　前記ダウンフェンダ（４７）は、その後端下縁（４７ｄ）が前記前輪（ＷＦ）の回転軸線（Ｃ）よりも下方に位置するように形成されることを特徴とする請求項１～６のいずれかに記載の自動二輪車におけるフロントフェンダ構造。 The downfender (47) according to any of the preceding claims, characterized in that the lower lower edge (47d) is located below the axis of rotation (C) of the front wheel (WF). Front fender structure in a motorcycle according to one or more embodiments of the present invention.
  8. 　前記ダウンフェンダ（４７）の後部が、その車幅方向に沿う幅を下方に向かうにつれて広くするように形成されることを特徴とする請求項１～７のいずれかに記載の自動二輪車におけるフロントフェンダ構造。 The front fender in a motorcycle according to any one of claims 1 to 7, wherein a rear portion of the down fender (47) is formed to widen in the vehicle width direction as it goes downward. Construction.
  9. 　前記ダウンフェンダ（４７）よりも前方で前記アップフェンダ（４６）の下面に、車幅方向に延びるリブ（６３）が設けられることを特徴とする請求項１～８のいずれかに記載の自動二輪車におけるフロントフェンダ構造。 The motorcycle according to any one of claims 1 to 8, wherein a rib (63) extending in the vehicle width direction is provided on the lower surface of the upfender (46) in front of the downfender (47). Front fender structure in the.
  10. 　前記ダウンフェンダ（４７）の後端部に、該ダウンフェンダ（４７）から左右両側に張り出す翼形状の整流板（８８）が設けられることを特徴とする請求項１～９のいずれかに記載の自動二輪車におけるフロントフェンダ構造。 The flow straightener plate (88) according to any one of the preceding claims, characterized in that at the rear end of the downfender (47) a vane-shaped straightening vane (88) is provided which projects to the left and right from the downfender (47). Front fender structure of motorcycles.
  11. 　前記整流板（８８）に、複数の羽板（８９ａ）を有するとともにそれらの羽板（８９ａ）相互間に流通孔（９０）が形成されるルーバ（８９）が、前輪（ＷＦ）側から見たときに前記羽板（８９ａ）が前記流通孔（９０）を覆う位置にあるようにして設けられることを特徴とする請求項１０記載の自動二輪車におけるフロントフェンダ構造。 A louver (89) having a plurality of blades (89a) and a flow through hole (90) between the blades (89a) is viewed from the front wheel (WF) side in the straightening vane (88). 11. The front fender structure in a motorcycle according to claim 10, wherein said wing plate (89a) is provided so as to cover said flow through hole (90) when it is closed.
  12. 　前記フロントフォーク（１１）が備える左右一対の脚部（３５）および前記ダウンフェンダ（４７）の前方に、左右一対の前記脚部（３５）を前方から覆う左右一対の導風部材（６５）が、前方からの走行風を前記両脚部（３５）の後方のエンジン（Ｅ）側に導くようにして固定配置されることを特徴とする請求項１～１１のいずれかに記載の自動二輪車におけるフロントフェンダ構造。 A pair of left and right air guide members (65) covering the pair of left and right legs (35) from the front in front of the pair of left and right legs (35) of the front fork (11) and the downfender (47) The front according to any one of claims 1 to 11, wherein the front of the motorcycle according to any one of claims 1 to 11, which is fixedly arranged so as to guide traveling wind from the front to the engine (E) side behind the legs (35). Fender structure.
  13. 　前記導風部材（６５）の側面視形状が、前方に突出する前方突部（６５ａ）と、該前方突部（６５ａ）から後上がりに延びる上傾斜部（６５ｂ）と、前記前方突部（６５ａ）から後下がりに延びる下傾斜部（６５ｃ）とを有して略Ｖ字状に形成されることを特徴とする請求項１２記載の自動二輪車におけるフロントフェンダ構造。 The side view shape of the air guide member (65) includes a front protrusion (65a) protruding forward, an upper inclined portion (65b) extending upward from the front protrusion (65a), and the front protrusion ( The front fender structure in a motorcycle according to claim 12, characterized in that the front fender structure is formed in a substantially V shape having a lower inclined portion (65c) extending rearward from 65a).
PCT/JP2012/061330 2012-02-16 2012-04-27 Front fender structure in automatic two-wheeled vehicle WO2013121597A1 (en)

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JP2014500027A JP5806380B2 (en) 2012-02-16 2012-04-27 Front fender structure in motorcycles
CN201280069763.0A CN104114443B (en) 2012-02-16 2012-04-27 Front fender structure in two-wheeled
AP2014007839A AP2014007839A0 (en) 2012-02-16 2012-04-27 Front fender structure in automatic two-wheeled vehicle
ZA2014/05536A ZA201405536B (en) 2012-02-16 2014-07-25 Front fender structure in automatic two-wheeled vehicle

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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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CN104114443A (en) 2014-10-22
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AP2014007839A0 (en) 2014-07-31
CN104114443B (en) 2016-08-24

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