JP4117453B2 - Scooter type motorcycle - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention provides a floor step disposed from the lower side of the boarding seat to the front wheel side, a pair of left and right footrest step portions, and a tunnel portion that covers a device straddling devices between both step portions. The present invention relates to a scooter type motorcycle configured as described above.
[0002]
[Prior art]
In a scooter type motorcycle equipped with an engine (horizontal engine, etc.) whose cylinder axis is along the front-rear direction, the floor step is centered as described above, because the engine is arranged between the front wheel and the riding seat. It has a tunnel structure.
In addition, even in models where multiple frame pipe members between the front wheels and the riding seat are separated from each other so as to increase the strength of the underbone frame, and in models where large capacity fuel tanks are arranged between the left and right step parts The floor step has a center tunnel structure.
[0003]
The entire width of the floor step is accommodated within a predetermined dimension because it is necessary to ensure a predetermined maximum bank angle. Therefore, if the width of the tunnel part is increased correspondingly to the models with large engines, fuel tanks, etc., the width of each step part must be narrowed, but with this structure, the rider straightens his legs in the front-rear direction. It must be placed on the step part, and the position where the foot is placed on the outside makes it feel like an inner crotch, and it becomes a cramped posture (when the outer crotch is used, the toe greatly protrudes laterally outward from the step part) ).
[0004]
Therefore, as disclosed in Japanese Patent Application Laid-Open No. 11-263265, the first step is to prevent the left and right knees from opening too much by setting the footrest surface of the step portion to be an inclined surface that becomes higher outward in the left-right direction of the vehicle body. technology and, as disclosed in JP-a-200 2 -19 665, a second technique to easily perform gripping traveling traveling sandwich the tunnel portion has been proposed.
[0005]
[Problems to be solved by the invention]
However, according to the first conventional technique, since the footrest surface of the step portion is an inclined surface that becomes higher outward in the left-right direction of the vehicle body, it is easy to feel uncomfortable on the foot. Also, according to the second conventional technique, the tunnel portion can be easily gripped by both feet, but the foot has to be placed straight on the step portion in the front-rear direction, and the foot is cramped.
[0006]
The present invention has been made in view of the above circumstances, and the purpose thereof is a structure provided with a floor step of a center tunnel structure, and the foot can be placed on the step portion with a natural and easy posture, It is to provide a scooter type motorcycle that can take a riding position that is easy to drive.
[0007]
[Means for Solving the Problems]
The characteristic configuration of the present invention is as described in claim 1.
The floor step disposed from the lower side of the boarding seat to the front wheel side is configured by providing a pair of left and right footrest step portions and a tunnel portion that covers the devices between both step portions. A scooter type motorcycle,
The tunnel part facing the rider's foot is formed in a front spreading shape whose width in the left-right direction is wider toward the front side ,
The devices are engines,
The position of the engine is set so that the cylinder axis is substantially along the front-rear direction, and the rear end of the forward-spreading tunnel portion is positioned between the front end and the rear end of the cylinder in the front-rear direction. In the point.
[0008]
And the structure of Claim 2 is:
The floor step disposed from the lower side of the boarding seat to the front wheel side is configured by providing a pair of left and right footrest step portions and a tunnel portion that covers the devices between both step portions. A scooter type motorcycle,
The tunnel part facing the rider's foot is formed in a front spreading shape whose width in the left-right direction is wider toward the front side,
The devices are an engine and a radiator disposed in front of the engine,
The position of the engine is set so that the cylinder axis is substantially along the front-rear direction, and the rear end of the forward-spreading tunnel portion is positioned between the front end and the rear end of the cylinder in the front-rear direction. In the point.
[0009]
The configuration of claim 3 is the configuration of claim 1 or 2 ,
The rear tunnel portion connected to the rear end portion of the forward-spreading tunnel portion is formed as a stopper portion that prevents the rider's foot heel from moving backward.

[0012]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, embodiments of the present invention will be described with reference to the drawings.
1, 2 and 3 show a scooter type motorcycle. This motorcycle includes a floor step F made of polypropylene from a lower side of a two-seater boarding seat 1 consisting of a front seat portion 1a and a rear seat portion 1b to a front wheel 2 side, and covers a steering portion. The large scooter is provided with a cover 3 and a frame cover 4 extending from the bottom to the rear of the boarding seat 1.
In addition to the front wheels 2 and the front cover 3, a steering handle 6, a wind screen 7, a pair of left and right headlamps 8, a pair of left and right rearview mirrors 9, a front fender 10 and the like are provided at the front of the vehicle body. In addition to the boarding seat 1 and the frame cover 4, a rear carrier 11, a backrest 12, a rear fender 13, a silencer 14, a rear wheel 15 and the like are provided. The front wheel 2 includes a disc type braking device 5.
[0013]
The frame cover 4 includes a side cover 54 provided on each of the lower left and right sides of the boarding seat 1, a lower cover 55, a rear center cover 56, and a rear frame cover including a rear fender 13. Further, a center stand 16, side stand 17, side leg shields 43 and 44, etc. are provided at the lower part of the center of the vehicle body. Reference numeral 29 is a front fork, and 30 is a rear cushion unit.
[0014]
As shown in FIGS. 5 and 6, a power unit U is disposed between the front and rear wheels at the bottom of the vehicle body. This power unit U is provided with a transmission case 19 incorporating a belt continuously variable transmission mechanism (not shown), and has an engine E composed of a cylinder 20 tilted forward almost horizontally, a cylinder head 21, a head cover 22, and the like. A transmission case 23 for transmitting the output rotation from the transmission case 19 to the rear wheel 15, a fuel supply device 24, and the like are provided. A radiator 26 is disposed in front of the head cover 22, and a pair of supply / discharge hoses 28 that are connected in communication with a water pump 27 and the like are provided. Reference numeral 25 denotes an oil filter.
[0015]
Next, the structure of the floor step F will be described in detail.
[Overall structure of floor step F]
As shown in FIGS. 4 and 5, the floor step F includes a front box portion 39 having left and right leg shields 39b and a central box portion 39c, a pair of left and right stepping portions S, and both step portions S. The tunnel portion T covers the engine E between the footboard 42 and the footboard 42 having the rear foot mounting surface 41 for the pillion rider.
[0016]
The tunnel portion T has a double structure composed of an inner tunnel 31 with a U-shaped cross-section that is provided integrally with the step portion S and an outer tunnel 34 with a U-shaped cross-section that is detachably overlapped with the inner tunnel 31. It is configured. The outer tunnel 34 is a lid that covers a maintenance hole as will be described later, and is hereinafter referred to as a “maintenance lid 34”. The left and right step portions S and the inner tunnel 31 constitute a floor base 32. The structure of the floor base 32 is as follows.
[0017]
[Structure of floor base 32]
The floor base 32 is divided into a front divided floor base 35 and a rear divided floor base 36 in the front-rear direction so that the front divided floor base 35 and the rear divided floor base 36 can be connected and disconnected. It is.
[0018]
As shown in FIGS. 7 and 8, the front divided floor base 35 is a member molded integrally with the front box portion 39, and includes a front footrest step portion 39 a and a front first inner tunnel portion 37. Become. The rear portion of the first inner tunnel portion 37 is formed in a step portion 37A whose outer surface is lowered by one step, and a plurality of maintenance holes K1, K2, K3 are formed in the step portion 37A, and each maintenance hole K1, Around the holes K2 and K3, vertical ribs are formed by bending the periphery of the holes downward and projecting downward to increase the strength of the stepped portion 37A. This vertical rib has substantially the same structure as the vertical rib 38a (see FIG. 11A) formed in a step portion 38A of the second inner tunnel portion 38 described later.
[0019]
As shown in FIG. 6, the maintenance holes K1 and K3 formed in the first inner tunnel portion 37 are small holes for adjusting the idling by operating the fuel supply device 24 (fuel injection device, carburetor, etc.). The maintenance hole K2 adjusts the tappet by operating the head cover 22 part, inserts and removes the oil cap 54 to supply and replace engine oil, and supplies coolant water to the reservoir tank (not shown). It is a large hole for performing.
[0020]
As shown in FIGS. 9 and 10, the rear divided floor base 36 is a member molded integrally with the foot board 42, and includes a rear footrest step portion 40 and a rear second inner tunnel portion. It consists of 38. Then, the front portion of the second inner tunnel portion 38 is formed in a step portion 38A whose outer surface is lowered by one step, a plurality of maintenance holes K4 are formed in the step portion 38A, and around each maintenance hole K4, FIG. As shown to (a), the vertical rib part 38a which made the circumference | surroundings of the hole bent and protruded below is formed, and the intensity | strength of the said step part 38A is raised. The front part of the second inner tunnel portion 38 has a lattice shape by forming a plurality of maintenance holes K4.
As shown in FIG. 6, the maintenance hole K4 formed in the second inner tunnel portion 38 is a hole for inspecting and servicing each auxiliary machine arranged on the engine E such as the water pump 27 and the cell motor 18. It is.
[0021]
The connection structure between the front divided floor base 35 and the rear divided floor base 36 will be described. As shown in FIGS. 7 and 10, a plurality of screwing portions n provided on both stepped portions 37A and 38A are connected to each other. As shown in FIG. 4, a plurality of screwing portions n provided on the rear end portion of the front footrest step portion 39a and the front end portion of the rear footrest step portion 40 are connected to each other as shown in FIG. It connects with a screw | thread and it connects with a frame member (not shown).
[0022]
In this connected state, the long front floor mats 45, 46 are overlapped and attached over the front footrest step portion 39 a and the rear footrest step portion 40. Further, the rear floor mats 47 and 48 are attached to the rear foot mounting surface 41 for the pillion rider by superposition. In the completed product state, the front floor mats 45 and 46 cover the plurality of screwing portions n. Next, the structure of the maintenance lid 34 will be described.
[0023]
[Structure of maintenance lid 34]
As shown in FIGS. 12, 13, and 14, the maintenance lid 34 includes left and right vertical walls 34 a and 34 b whose front edges are shaped like “<” in a side view, and an upper surface portion 34 c therebetween. From the stepped portion 37A of the first inner tunnel portion 37 in the connected state to the stepped portion 38A of the second inner tunnel portion 38, it is assembled in a detachable manner, and in this assembled state, all the maintenance of both stepped portions 37A and 38A The holes K1, K2, K3, and K4 are configured to be covered.
[0024]
As shown in FIGS. 16, 17, and 18, the first vertical wall portion 81 (corresponding to the tunnel portion) of the maintenance lid 34 facing the rider's R foot 80 is widened forward as the width in the left-right direction increases. The second vertical wall portion 82 (corresponding to the rear tunnel portion) connected to the rear end portion of the first vertical wall portion 81 is formed as a stopper portion that prevents the heel of the foot 80 from moving backward. It is.
[0025]
More specifically, as shown in FIG. 18, the right wall portion 83 composed of the first vertical wall portion 81 and the second vertical wall portion 82 on the right side has a substantially cross-sectional shape when viewed from the upper right outside of the vehicle body. The left wall portion 84 corresponding to the right wall portion 83 is recessed so as to be symmetrical with the right wall portion 83 while being recessed so as to have a “he” shape. Further, the right and left wall portions 83 and 84 are slightly inclined toward the center in the left-right direction of the vehicle body when viewed from the front-rear direction (see FIG. 17). The length in the front-rear direction of both walls 83 and 84 is set slightly longer than the length of the foot 80, and the most depressed portion is a gently curved surface having a curvature larger than the curvature of the heel of the foot 80 (second inner tunnel). The left and right vertical walls 31a in the portion 38 are formed so that the portions facing the both wall portions 83 and 84 are brought closer to the vehicle body center side in correspondence with them.
[0026]
An apex 85 (corresponding to the rear end of the forward-spreading tunnel portion) of the most depressed portion of both wall portions 83 and 84 is located at the front portion of the crankcase portion 93 on the front side of the transmission case 19 and corresponds to the apex 85. The gap between the inner surfaces of both wall portions 83 and 84 and the outer surface of the crankcase portion 93 is as close as possible.
Since the rider R is configured in this way, the rider R should make sure that the toe of the foot does not protrude from the rear footrest step portion 40 and that the heel enters the center of the vehicle body from the toe. The foot 80 can be placed on the footrest step portion 40.
Then, the opening angle of both thighs 86 of the rider R seated on the front seat portion 1 a can be made substantially coincident with the opening angle of the foot 80. That is, as shown in FIG. 18, it is possible to take a natural riding posture in which the line R1 connecting the seating center position P of the rider R and the knee and the line R2 that is the direction of the foot 80 are substantially parallel in a plan view.
[0027]
For example, as a means for making it possible to take this riding posture, when the footrest step portion 40 is projected laterally outward, the maximum bank angle θ (maximum lateral tilt angle) (see FIG. 17, D is traveling) Although the road surface is small, the structure of the present invention employs a means for recessing the right and left wall portions 83 and 84 as described above, so that a decrease in the maximum bank angle θ can be avoided.
[0028]
Both the wall portions 83 and 84 are in a state of being located on the laterally outer side of the cylinder E, the cylinder head 21 and the head cover 22 of the engine E. In addition, the radiator 26 is positioned in front of both the wall portions 83 and 84, and a part of the traveling wind that has passed through the radiator 26 passes around the engine E and escapes backward while cooling it. And most of them bend downward on the front side of the head cover 22 and go out below the tunnel portion T.
[0029]
The maintenance lid 34 can be formed by a mold having a structure divided into upper and lower parts, and both wall parts 83 and 84 can be formed as vertical walls having a gradient of a minimum draft angle. , 84 can be held firmly between rider R's heels, ankles, and calves.
[0030]
As shown in FIGS. 12, 13, and 14, hooks 49 are respectively formed at the front end portions of the left and right vertical walls 34a and 34b of the maintenance lid 34, and a pair of left and right insertion pieces at the lower ends of the front and rear intermediate portions. 50 is formed, a pair of left and right engaging projections 51 are formed on the rear lower end, and a screw insertion hole 52 is formed in the center of the rear end of the upper surface 34c.
[0031]
The maintenance lid 34 is assembled as follows over the inner tunnel 31 (that is, the first inner tunnel portion 37 and the second inner tunnel portion 38 in the connected state) (see FIG. 5).
(1) The maintenance lid 34 is placed in a forward-downward inclined posture above the connected inner tunnel 31, and the front side of the hole 53 formed in the side part of the left and right front-facing step portions 39a (in the drainage part) Each of the hooks 49 is fitted into a hole that is long in the front-rear direction as will be described later.
(2) The maintenance lid 34 is pivotally moved downward about the hook 49, and the rear end portions of the left and right vertical walls 34a, 34b are elastically deformed so as to protrude outward, and are moved to the rear side of the hole 53. Each insertion piece 50 is inserted.
(3) The left and right engaging protrusions 51 on the rear end side that are forcibly moved outward are moved inward, and are inserted into a ring-shaped rubber member 67 (see FIG. 9) on the second inner tunnel portion 38 side.
(4) A screw is passed through the screw insertion hole 52 of the maintenance lid 34 (see FIG. 4), and screwed to a screwing portion n provided in the second inner tunnel portion 38.
[0032]
When removing the maintenance lid 34 from the inner tunnel 31, the operation may be performed in the reverse order.
[0033]
FIG. 15A shows a connection structure of the maintenance lid 34, the first inner tunnel portion 37, and the second inner tunnel portion 38 (the portion indicated by X in FIG. 1). That is, the arcuate rear end portion of the first inner tunnel portion 37 and the arcuate end portion of the maintenance lid 34 are vertically overlapped, and the downward engagement protrusion 70 provided at the end portion of the maintenance lid 34 is A downwardly facing first contact plate 72 provided in the first inner tunnel portion 37 and a first contact plate 73 provided in the second inner tunnel portion 38 are engaged with engagement holes provided in the first inner tunnel portion 37. They are butted in the front-rear direction.
[0034]
As described above, the tunnel portion T has a double structure including the inner tunnel 31 and the maintenance lid 34, and the cross-sectional shape thereof is formed in a strong downward U-shape. The strength can be increased, and it becomes difficult to deform even when a heavy load is placed. Furthermore, the tunnel portion T can be sandwiched and held firmly with the left and right feet, and it is easy to perform a ride to grip the tunnel portion T with both feet.
When maintenance is performed, all the maintenance holes K1, K2, K3, and K4 can be exposed by simply removing the maintenance lid 34 from the inner tunnel 31, so that there are many from the maintenance holes K1, K2, K3, and K4. Inspection and maintenance over the above items, that is, maintenance can be easily performed.
[0035]
As shown in FIGS. 7, 8, and 15 (b), the drainage groove 57 along the front-rear direction and the liquid guided to the drainage groove 57 are formed at the lower ends of the left and right vertical walls 31 a in the first inner tunnel portion 37. And a drainage hole (an example of a drainage part) 59 for discharging water to the outside, and a water guide part d for guiding the liquid flowing down the backside 34u to the drainage groove 57 on the backside 34u of the maintenance lid 34 (There is a gap between the vertical wall 31a and the back surface of the maintenance lid 34). The water guiding portion d is configured by forming the lower end portions of the vertical wall portions 34a and 34b of the maintenance lid 34 in a stepped shape in which the inner side protrudes downward from the outer side. The water guide portion d is inserted into the drainage groove 57.
[0036]
The drainage groove 57 is located near the root of the front footrest step portion 39a, and most of the drainage groove 57 extending from the front end to the rear portion is a hole without a bottom. The hole portion is the above-described long hole portion 53 into which the hook 49 and the insertion piece 50 are inserted. As a result, most of the rainwater and muddy water led to the front drainage groove 57 is discharged from the hole 53.
[0037]
As shown in FIGS. 9, 10, 11 (a), and 11 (b), a drainage groove 58 along the front-rear direction and a drainage groove are formed at the lower ends of the left and right vertical walls 31 a in the second inner tunnel portion 38. A drainage hole (an example of a drainage part) for discharging the liquid guided to 58 to the outside is formed, and the liquid flowing down through the backside 34 u of the maintenance lid 34 is guided to the drainage groove 58. A water guide portion (having the same structure as the water guide portion on the first inner tunnel portion 37 side) is formed.
The drainage groove 58 is located near the root of the rear footrest step portion 40. As a result, rainwater and muddy water led to the rear drain groove 58 are discharged.
[0038]
With the above structure, even if muddy water or rainwater splashed from the front wheel 2 during traveling adheres to the back surface 34u of the maintenance lid 34 through the maintenance holes K1, K2, K3, K4, it flows down the back surface 34u. The muddy water is guided from the water guide portion d to the front and rear drain grooves 57 and 58 and is discharged outside the apparatus without leaking to the step portion S. The drainage part 59 may be a vertically oriented groove or a pipe. The water guide portion d may be configured by integrally providing a tongue piece on the back surface 34u of the maintenance lid 34 so that the muddy water flowing down the lid back surface 34u can be directed inward to the drain grooves 57, 58. Good.
[0039]
[Another embodiment]
[1] Although not shown, in the four-cycle engine, the cylinder 20 has the narrowest width, so that the vertical position of the maintenance lid 34 is set with the engine posture set to a posture in which the axial center of the cylinder 20 is substantially along the front-rear direction. The apex 85 of the most depressed portion of the wall portion may be positioned between the front end and the rear end of the cylinder 20 in the front-rear direction. According to this configuration, the vertex 85 can be moved further inward in the left-right direction.
[0040]
[2] In the tunnel portion T, in addition to the engine E and the radiator 26, a frame pipe forming a frame, a fuel tank, an electrical device such as a battery, etc. may be arranged. Collectively referred to as “equipment between parts”.
[0041]
【The invention's effect】
A scooter type motorcycle according to the present invention covers a floor step disposed from a lower side of a boarding seat to a front wheel side so as to straddle a pair of left and right footrest steps and devices between both step portions. The scooter type motorcycle is provided with a tunnel portion, and the tunnel portion facing the rider's feet is formed in a front wide shape with the width in the left-right direction wider toward the front side, so both step portions In addition to being able to place the foot on the front and back straight, it can also be placed in a state where the heel is in a natural front spread near the center of the vehicle body, and the opening angle of both thighs is set to the opening angle of the foot Can be matched.
[0042]
As a result, a scooter-type motorcycle that has a floor step with a center tunnel structure, can be placed on the step part with a natural and comfortable posture, and can have a riding position that is easy to drive. We were able to.
[0043]
When the devices are engines, the longitudinal cross-sectional area in the tunnel portion is larger on the front side, so that the speed of traveling wind in the tunnel portion can be increased on the rear side, and the engine (including both air cooling and water cooling) Can be efficiently cooled.
[0044]
In the structure in which the devices are the engine and the radiator disposed in front of the engine, the heat radiation area of the radiator can be increased as compared with the structure in which the width of the tunnel portion is constant. Also, for example, even if the distance between the radiator and the engine cannot be sufficient, the longitudinal cross-sectional area in the tunnel portion is larger on the front side, so that the traveling wind after passing through the radiator can be made faster on the rear side in the tunnel portion. In addition, the engine can be cooled efficiently, and the heated traveling wind can be quickly discharged out of the tunnel.
[0045]
The position of the engine is set so that the cylinder axis is substantially along the front-rear direction, and the rear end of the forward-spreading tunnel portion is positioned between the front end and the rear end of the cylinder in the front-rear direction. In the engine, the cylinder has the narrowest width, so the rear end of the forward-spreading tunnel part can be moved closer to the center in the left-right direction of the vehicle body, and the width of the step part can be widened for more driving. You will be able to take an easy riding position.
[0046]
If the rear tunnel part connected to the rear end part of the tunnel part of the front spread is formed as a stopper part that prevents the rider's foot heel from moving backward, the position of the foot during running is prevented from shifting. It is possible to facilitate the grip traveling that travels with the tunnel portion interposed therebetween.
[Brief description of the drawings]
FIG. 1 is a side view of a scooter type motorcycle. FIG. 2 is a plan view of a scooter type motorcycle. FIG. 3 is a front view of a scooter type motorcycle. FIG. 5 is a side view showing the positional relationship between the engine and the floor step. FIG. 6 is a plan view showing the positional relationship between the engine and the floor step. FIG. 7 is a side view showing the front box and the front divided floor base. 8 is a plan view showing a front box and a front divided floor base. FIG. 9 is a side view showing a footboard and a rear divided floor base. FIG. 10 is a plan view showing a rear divided floor base. 9A is a view taken along line AA in FIG. 9, and FIG. 12B is a view taken along line BB in FIG. 9. FIG. 12 is a side view of the maintenance lid. FIG. 13 is a plan view of the maintenance lid. Rear view of 15A is a cross-sectional view showing a portion X in FIG. 1, and FIG. 15B is a cross-sectional view showing a front divided floor base and a maintenance lid. FIG. 16 is a perspective view showing a structure around a maintenance and boarding seat. FIG. 17 is a view showing a state where a foot is placed on a step part. FIG. 18 is a plan view showing a posture of a rider's foot in a sitting position.
DESCRIPTION OF SYMBOLS 1 Boarding seat 2 Front wheel 20 Cylinder 26 Radiator 80 Foot | foot 81 Tunnel part 82 Rear side tunnel part 85 The rear end E of the tunnel part which spreads forward E Engine R Rider S Step part T for footrests Tunnel part F Floor step

Claims (3)

The floor step disposed from the lower side of the boarding seat to the front wheel side is configured by providing a pair of left and right footrest step portions and a tunnel portion that covers the devices between both step portions. A scooter type motorcycle,
The tunnel part facing the rider's foot is formed in a front spreading shape whose width in the left-right direction is wider toward the front side ,
The devices are engines,
The position of the engine is set so that the cylinder axis is substantially along the front-rear direction, and the rear end of the forward-spreading tunnel portion is positioned between the front end and the rear end of the cylinder in the front-rear direction. Scooter type motorcycle. The floor step disposed from the lower side of the boarding seat to the front wheel side is configured by providing a pair of left and right footrest step portions and a tunnel portion that covers the devices between both step portions. A scooter type motorcycle,
The tunnel part facing the rider's foot is formed in a front spreading shape whose width in the left-right direction is wider toward the front side ,
The devices are an engine and a radiator disposed in front of the engine,
The position of the engine is set so that the cylinder axis is substantially along the front-rear direction, and the rear end of the forward-spreading tunnel portion is positioned between the front end and the rear end of the cylinder in the front-rear direction. Scooter type motorcycle. 3. The scooter type motorcycle according to claim 1 or 2, wherein a rear tunnel portion connected to a rear end portion of the forward spreading tunnel portion is formed as a stopper portion that prevents a heel of a rider's foot from moving backward. .

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