JP2003306182A - Scooter type motorcycle - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a scooter type motorcycle allowing to place legs on step parts naturally at ease and take a riding position to easily drive even thought having a structure comprising a floor step with a center tunnel structure. <P>SOLUTION: The floor step F arranged throughout a lower part side of a seat 1 for riding to a front wheel 2 side is provided with a right and left pair of step parts S for placing legs and a tunnel part T covering devices between both the steps S so as to stride the devices. Tunnel portions 82, 83 opposing to legs 80 of a rider R are formed in a front extending shape having a larger width in the lateral direction as getting closer to the front side. <P>COPYRIGHT: (C)2004,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a state in which a floor step disposed from the lower side of a riding seat to the front wheel side is straddled by a pair of left and right foot step portions and devices between the step portions. The present invention relates to a scooter-type motorcycle having a tunnel portion covering the inside of the motorcycle.

[0002]

2. Description of the Related Art In a scooter type motorcycle equipped with an engine (horizontal engine, etc.) whose cylinder axis extends along the front-rear direction, the floor step can be avoided because the engine, etc. is arranged between the front wheels and the riding seat. The center tunnel structure is as described above. In addition, in order to increase the strength of the underbone frame, even in models where the multiple frame pipe members between the front wheels and the passenger seat are separated from each other vertically, and in models where a large capacity fuel tank is arranged between the left and right step parts. The floor steps are constructed in a center tunnel structure.

The entire width of this floor step is kept within a predetermined dimension because it is necessary to secure a predetermined maximum bank angle. Therefore, if the width of the tunnel part is increased to correspond to those with a large engine, fuel tank, etc., it is necessary to narrow the width of each step part, but with this structure, the rider straightens his legs in the front-back direction. Must be placed on the step part, and the position where the foot is placed approaches the outside, causing a slight inward thigh, and a cramped riding posture (when the outer thigh is pushed, the toes extend largely outward from the step part to the lateral outside). ).

Therefore, as disclosed in Japanese Unexamined Patent Publication No. 11-263265, the foot rest surface of the step portion is formed into an inclined surface which becomes higher toward the outer side in the left-right direction of the vehicle body so that the left and right knees do not open too much. The first technique and JP 2000-
As disclosed in Japanese Patent No. 19665, a second technique has been proposed which facilitates grip traveling in which a tunnel portion is sandwiched for traveling.

[0005]

However, according to the above-mentioned first conventional technique, the foot resting surface of the step portion is an inclined surface which becomes higher toward the outer side in the left-right direction of the vehicle body. It was easy to feel. In addition, the above-mentioned second
According to this technique, it is easier to grip the tunnel part with both feet, but there is no choice but to put the foot straight on the step part in the front-back direction, which makes the foot cramped.

The present invention has been made in view of the above situation, and an object thereof is to place a foot in a natural and comfortable posture on a step portion even though the floor step has a center tunnel structure. The point is to provide a scooter-type motorcycle that is capable of taking a riding position that is easy to drive.

[0007]

According to a characteristic configuration of the present invention, as described in claim 1, a floor step provided from the lower side of the riding seat to the front wheel side is provided for a pair of left and right feet. A scooter type motorcycle comprising a step portion and a tunnel portion covering the devices between the step portions so as to straddle the devices, wherein the width of the tunnel portion facing the rider's foot in the left-right direction is The point is that the front side is wider and wider.

The structure of claim 2 is that in the structure of claim 1, the devices are an engine.

According to a third aspect of the present invention, in the configuration of the first aspect, the devices are an engine and a radiator arranged in front of the engine.

According to a fourth aspect of the present invention, in the configuration of the second or third aspect, the posture of the engine is set such that the axis of the cylinder is substantially along the front-rear direction, and the rear end of the front widening tunnel portion is set. , Located in the front-rear direction between the front end and the rear end of the cylinder.

The structure of claim 5 is the same as that of claims 1, 2, 3, 4
In any one of the above configurations, the rear side tunnel portion connected to the rear end portion of the front widening tunnel portion is formed in a stopper portion that blocks the rearward movement of the rider's foot.

[0012]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described below with reference to the drawings. 1, 2 and 3 show a scooter type motorcycle. In this motorcycle, a polypropylene floor step F is arranged from a lower side of a two-seater riding seat 1 composed of a front seat portion 1a and a rear seat portion 1b to a front wheel 2 side, and a front portion covering a steering portion is covered. The large scooter is provided with a cover 3 and a frame cover 4 extending from below the seat 1 to the rear. In addition to the front wheels 2 and the front cover 3, a steering wheel 6, a windscreen 7, a pair of left and right headlights 8, a pair of left and right rearview mirrors 9, a front fender 10, etc. are provided on the front portion of the vehicle body, and the rear portion of the vehicle body is provided. In addition to the riding seat 1 and the frame cover 4, a rear carrier 11, a backrest 12, a rear fender 13, a silencer 14, rear wheels 15 and the like are provided. The front wheel 2 is provided with a disc type braking device 5.

The frame cover 4 is used for the passenger seat 1
Side covers 54 provided on the left and right below, a lower cover 55, a rear center cover 56, and a rear cover.
The rear frame cover is composed of the fender 13. In addition, the center stand 1
6, side stand 17, side leg shield 43,
44 and the like are provided. Reference numeral 29 is a front fork, and 30 is a rear cushion unit.

As shown in FIGS. 5 and 6, a power unit U is arranged between the front and rear wheels at the bottom of the vehicle body. The power unit U is provided with a transmission case 19 having a belt continuously variable transmission mechanism (not shown) incorporated therein, and is provided with an engine E including a cylinder 20 tilted substantially horizontally and forward, a cylinder head 21, a head cover 22, and the like. Installation, mission case 1
Transmission case 2 for transmitting output rotation from 9 to rear wheel 15
3, a fuel supply device 24 and the like are provided. A radiator 26 is arranged in front of the head cover 22, and a pair of supply / discharge hoses 28 that are connected for communication with a water pump 27 and the like are provided. 25 is an oil filter.

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 provided with left and right leg shields 39b and a central box portion 39c, and a pair of left and right stepping steps. It comprises a section S, a tunnel section T covering the engine E between the step sections S so as to straddle the engine E, and a footboard 42 having a rear footrest surface 41 for a pillion rider.

The tunnel portion T is provided with the step portion S integrally with the inner tunnel 31 having a downward U-shaped cross section, and the downward tunnel U having a detachable overlap with the inner tunnel 31.
It is configured in a double structure with the letter-shaped outer tunnel 34.
The outer tunnel 34 is a lid that covers the maintenance hole as described later, and will be referred to as “maintenance lid 3” below.
4 ”. 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.

[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, and the front divided floor base 35 and the rear divided floor base are divided. 36 and 36 can be connected and disconnected freely.

As shown in FIGS. 7 and 8, the front split floor base 35 is a member integrally molded with the front box portion 39, and the front foot step portion 39a is formed.
And the first inner tunnel portion 37 on the front side. And
A rear portion of the first inner tunnel portion 37 is formed into a step portion 37A having an outer surface 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, K2 is formed. Around the K3, a vertical rib portion is formed by bending the periphery of the hole downward so as to project to increase the strength of the step portion 37A. The vertical ribs have substantially the same structure as the vertical ribs 38a (see FIG. 11A) formed on the step portion 38A of the second inner tunnel portion 38 described later.

As shown in FIG. 6, the maintenance holes K1 and K3 formed in the first inner tunnel portion 37 are used for operating the fuel supply device 24 (fuel injection device, carburetor, etc.) to adjust the idling. Is a small hole in
The maintenance hole K2 is used to operate the head cover 22 to adjust the tappet, to insert and remove the oil cap 54 to supply and replace engine oil, and to supply cooling water to a reservoir tank (not shown). It is a large hole.

As shown in FIGS. 9 and 10, the split floor base 36 on the rear side is a member integrally molded with the footboard 42, and includes a step portion 40 on the rear side and a second step on the rear side. It consists of an inner tunnel portion 38. Then, the step portion 3 whose outer surface is lowered by one step from the front portion of the second inner tunnel portion 38
8A, and a plurality of maintenance holes K4 are formed in this step portion 38A, and the vertical periphery of each maintenance hole K4 is bent downward and protruded around the maintenance hole K4 as shown in FIG. 11 (a). The rib portion 38a is formed to increase the strength of the step portion 38A. Second inner tunnel part 3
The front portion of 8 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
It is a hole for inspecting and servicing each auxiliary machine such as the water pump 27 and the starter motor 18 arranged on the engine E.

The connecting structure of 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 screw fastening portions provided on both the step portions 37A and 38A. As shown in FIG. 4, the front foot step portions 3 are connected to each other by screws.
A plurality of screw fastening parts n provided respectively at the rear end of 9a and the front end of the rear footrest step portion 40 are screw-connected to each other and connected to a frame member (not shown).

In this connected state, the long front floor mats 45 and 46 are superposed and attached to the front footrest step portion 39a and the rear footrest step portion 40. Further, rear floor mats 47 and 48 are superposed and attached to the rear footrest surface 41 for the pillion rider. In the completed product state, the front floor mats 45 and 46 cover the plurality of screw fastening portions n. Next, the maintenance lid 34
The structure of will be described.

[Structure of Maintenance Lid 34] FIG.
2, the maintenance lid 3 as shown in FIGS.
4 is a left and right vertical wall 34 having a V-shaped front edge in a side view.
a, 34b and the upper surface portion 34c between them,
From the step portion 37A of the first inner tunnel portion 37 in the connected state to the step portion 38A of the second inner tunnel portion 38, the step portions 37A are removably superposed and assembled, and in the assembled state, both step portions 37
All maintenance holes A1, 38A K1, K2, K3
It is configured to cover K4.

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 foot 80 of the rider R is arranged such that the width in the left-right direction is closer to the front side. A stopper that prevents the heel of the foot 80 from moving backwards by forming a second vertical wall portion 82 (corresponding to a rear tunnel portion) that is formed in a wide front spread shape and is continuous with the rear end portion of the first vertical wall portion 81. It is formed in the part.

More specifically, as shown in FIG. 18, the right wall portion 8 composed of the first vertical wall portion 81 and the second vertical wall portion 82 on the right side.
3 is recessed so that the cross-sectional shape when viewed from the upper right outside of the vehicle body is substantially a "V" shape, and the right wall portion 8 is formed.
The left wall portion 84 corresponding to No. 3 is recessed so as to be symmetrical with the right wall portion 83. Further, the right and left wall portions 83, 84 as viewed from the front-rear direction are slightly tilted toward the center of the vehicle body in the left-right direction (see FIG. 17). The length of both wall portions 83, 84 in the front-rear direction is set to be slightly longer than the length of the foot 80, and the most recessed 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 of the portion 38 are formed such that the portions facing the both wall portions 83 and 84 are brought closer to the center of the vehicle body so as to correspond thereto.

The apex 85 (corresponding to the rear end of the front widening tunnel portion) of the most recessed portions of the both wall portions 83 and 84 is located at the front portion of the crank case portion 93 on the front side of the mission case 19 and is apex 85. The gaps between the inner surfaces of both wall portions 83 and 84 and the outer surface of the crankcase portion 93 are made as close as possible to each other. With this configuration, the rider R is designed so that the toes of the foot do not protrude from the rear footrest step portion 40 and that the heel is located closer to the center of the vehicle than the toes. 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 1a can be made substantially equal to the opening angle of the foot 80. That is, as shown in FIG. 18, a line R1 that connects the sitting center position P of the rider R and the knee in a plan view and a line R2 that is the direction of the foot 80 can take a substantially natural riding posture.

For example, as a means for enabling this riding posture, when the footrest step portion 40 is extended laterally outward, the maximum bank angle θ (maximum lateral tilt angle) (see FIG. 17, Although D is a smaller road surface, the structure of the present invention uses the right and left wall portions 8 as described above.
Since the means for making the depressions 3 and 84 are taken, a decrease in the maximum bank angle θ can be avoided.

The both wall portions 83 and 84 are located on the lateral outer side of the cylinder 20, the cylinder head 21, the head cover 22, etc. of the engine E. Further, the radiator 26 is located in front of the both wall portions 83, 84, and a part of the traveling wind that has passed through the radiator 26 passes around the engine E and cools the engine E to escape backward. And most of them bend downward on the front side of the head cover 22,
It goes out below the tunnel T.

The maintenance lid 34 can be molded by a molding die having a vertically divided structure.
3 and 84 can be formed in a vertical wall having a gradient of about the minimum draft, and both wall portions 83 and 84 can be firmly sandwiched and held by the rider R's heel, ankle, and calf.

As shown in FIGS. 12, 13, and 14, hooks 49 are formed at the front ends of the left and right vertical walls 34a, 34b of the maintenance lid 34, and a pair of left and right is formed at the lower ends of the front and rear intermediate portions. An insertion piece portion 50 is formed, and a pair of left and right sideways engaging projections 51 are formed at the rear lower end portion,
A screw insertion hole 52 is formed at the center of the rear end of the upper surface portion 34c.

The maintenance lid 34 is assembled over the inner tunnel 31 (that is, the first inner tunnel portion 37 and the second inner tunnel portion 38 in the connected state) as follows (see FIG. 5). (1) The hole 53 formed in the side part of the left and right front footrest step portions 39a with the maintenance lid 34 in the front downward inclination posture above the inner tunnel 31 in the connected state.
Each hook 49 is fitted into the front side (corresponding to the drainage part. This hole is a hole that is long in the front and rear direction as described later). (2) The maintenance lid 34 is swung downward around the hook 49 to move the left and right vertical walls 34a, 34b.
The rear end portion is elastically deformed to project outward, and each insertion piece 50 is fitted into the rear side of the hole portion 53. (3) The left and right engagement projections 51 on the rear end side, which are forcibly moved to the outside, are moved to the inside, and are pushed and inserted into the ring-shaped rubber material 67 (see FIG. 9) on the side of the second inner tunnel portion 38. (4) A screw is passed through the screw insertion hole 52 of the maintenance lid 34 (see FIG. 4) and fixed to the screw fixing portion n provided on the second inner tunnel portion 38.

When removing the maintenance lid 34 from the inner tunnel 31, the procedure may be reversed.

FIG. 15A shows the maintenance lid 34.
And the first inner tunnel portion 37 and the second inner tunnel portion 3
The connection structure with 8 is shown (the place of X in FIG. 1). That is, the arcuate rear end of the first inner tunnel portion 37 and the arcuate end of the maintenance lid 34 are vertically overlapped with each other, and the downward engaging protrusion 70 provided on the end of the maintenance lid 34 is The first contact plate 72 provided on the first inner tunnel portion 37 and the first contact plate 73 disposed on the second inner tunnel portion 38 are engaged with each other by engaging the engaging holes provided in the first inner tunnel portion 37. Butt in the front-back direction.

As described above, the tunnel portion T has a double structure consisting of the inner tunnel 31 and the maintenance lid 34, and the cross-sectional shape of the tunnel portion T is downward facing U with high rigidity.
Since it is formed in a character shape, the strength of the tunnel portion T can be increased, and it becomes difficult to deform even if a heavy load is placed. Further, the tunnel portion T can be sandwiched between the left and right feet and firmly held, and it becomes easier to ride the tunnel portion T with both feet. Then, at the time of maintenance, all maintenance holes K can be obtained by simply removing the maintenance lid 34 from the inner tunnel 31.
1, K2, K3, K4 can be exposed,
It is possible to easily perform inspections and maintenance, that is, maintenance, over many items from the respective maintenance holes K1, K2, K3, K4.

As shown in FIGS. 7, 8 and 15 (b),
At the lower end of the left and right vertical walls 31a in the first inner tunnel portion 37, a drain groove 57 along the front-rear direction and a drain hole (an example of a drain portion) 59 for discharging the liquid guided to the drain groove 57 to the outside. And a water guiding portion d for guiding the liquid flowing down along the back surface 34u to the drain groove 57 is formed on the back surface 34u of the maintenance lid 34 (between the vertical wall 31a and the back surface of the maintenance lid 34). Has a gap). The water guiding part d is provided with a maintenance lid 34.
The lower end portions of the vertical wall portions 34a and 34b are formed in a stepped shape in which the inside projects downward more than the outside. Then, the water guiding portion d is inserted into the drain groove 57.

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 has a bottomless hole shape. The hole portion serves as the above-described long hole portion 53 into which the hook 49 or the insertion piece 50 is inserted. As a result, most of the rainwater or muddy water guided to the drainage groove 57 on the front side is discharged down the hole 53.

FIG. 9, FIG. 10, FIG. 11 (a), FIG.
As shown in (b), drainage grooves 58 along the front-rear direction are formed at the lower end portions of the left and right vertical walls 31a of the second inner tunnel portion 38, and drainage for discharging the liquid guided to the drainage grooves 58 to the outside. While forming a hole (an example of drainage part),
On the back surface 34u of the maintenance lid 34, the back surface 34u
Water guiding part for guiding the liquid flowing down along u to the drain groove 58 (having the same structure as the water guiding part on the first inner tunnel portion 37 side).
Has been formed. The drain groove 58 is located near the root of the rear footrest step portion 40. As a result, rainwater and muddy water guided to the drainage groove 58 on the rear side are discharged downward.

With the above structure, muddy water and rainwater scattered from the front wheels 2 due to traveling are maintained in the maintenance holes K1, K2, K.
Back surface 34u of the maintenance lid 34 through 3, K4
Even if it adheres to the muddy water, the muddy water flowing down along the back surface 34u is guided from the water guiding part d to the front and rear drain grooves 57 and 58, and is discharged to the outside of the machine without leaking to the step part S. The drain 59 may be a vertical groove or pipe. The water guiding part d turns the inward direction of the muddy water flowing down the lid back surface 34u so as to guide it to the drain grooves 57 and 58.
A tongue piece may be integrally provided on the back surface 34u of the maintenance lid 34.

[Other Embodiments] [1] Although not shown, since the cylinder 20 has the narrowest width in a four-cycle engine, the engine is set in a posture in which the axis of the cylinder 20 extends substantially in the front-rear direction. The apex 85 of the most recessed portion of the vertical walls of the maintenance lid 34 may be located between the front end and the rear end of the cylinder 20 in the front-rear direction. With this configuration, the apex 85 can be moved further inward in the left-right direction.

[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, electrical equipment such as a battery, and the like may be arranged. Collectively referred to as "equipment between both step units".

[0041]

The scooter type motorcycle according to the present invention is
A floor step disposed from the lower side of the riding seat to the front wheel side is configured by providing a pair of left and right step portions for foot placement and a tunnel portion covering the devices between the step portions so as to straddle the devices. In a certain scooter type motorcycle, the tunnel part facing the rider's foot is formed in a front expanse shape whose width in the left-right direction is wider toward the front side, so the feet placed on both step parts should be straight in the front-back direction. Not only can it be placed, but the heel can be placed in a natural forward spread with the heel closer to the center of the body, and the opening angle of both thighs can be adjusted to the opening angle of the foot.

As a result, a scooter-type automatic machine which has a floor step of a center tunnel structure and can put a foot in a step position with a natural and comfortable posture and can take a riding position which is easy to drive We were able to provide a motorcycle.

When the device is an engine, the longitudinal sectional area in the tunnel portion is larger toward the front side, so that the speed of traveling wind in the tunnel portion can be increased toward the rear side, and the engine (both air cooling and water cooling) can be increased. (Including also) can be cooled efficiently.

In the structure in which the above-mentioned devices are the engine and the radiator arranged 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. Further, for example, even if the distance between the radiator and the engine cannot be sufficiently secured, since the longitudinal cross-sectional area in the tunnel portion is larger toward the front side, the traveling wind after passing through the radiator can be made faster toward the rear side inside the tunnel portion. As a result, the engine can be cooled efficiently, and hot running wind can be quickly discharged to the outside of the tunnel section.

The engine is set such that the axis of the cylinder is substantially in the front-rear direction, and the rear end of the front widening tunnel portion is located between the front end and the rear end of the cylinder in the front-rear direction. Since the cylinder has the narrowest width in the engine, the rear end of the front widening tunnel can be moved closer to the center of the vehicle in the left-right direction, and the width of the step portion can be increased. , You will be able to take a more comfortable riding position.

When the rear tunnel portion connected to the rear end portion of the front widened tunnel portion is formed as a stopper portion which prevents the heel of the rider's foot from moving backward, the position of the foot during running It is possible to prevent the shift, and it is possible to facilitate grip traveling in which the tunnel portion is sandwiched for traveling.

[Brief description of 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. 4 is an exploded perspective view showing the structure of a floor step.

FIG. 5 is a side view showing a positional relationship between an engine and a floor step.

FIG. 6 is a plan view showing a positional relationship between an engine and a floor step.

FIG. 7 is a side view showing a front box and a split floor base on the front side.

FIG. 8 is a plan view showing a front box and a front split floor base.

FIG. 9 is a side view showing a footboard and a rear split floor base.

FIG. 10 is a plan view showing a split floor base on the rear side.

11A is a view taken along the line AA in FIG. 9, and FIG.
BB view in

FIG. 12 is a side view of the maintenance lid.

FIG. 13 is a plan view of the maintenance lid.

FIG. 14 is a rear view of the maintenance lid.

15A is a cross-sectional view showing a portion X of FIG. 1, and FIG. 15B is a cross-sectional view showing a front split floor base and a maintenance lid.

FIG. 16 is a perspective view showing a structure around maintenance and a passenger seat.

FIG. 17 is a diagram showing a state in which the foot is placed on the step part.

FIG. 18 is a plan view showing the posture of the legs of the rider in the sitting posture.

[Explanation of symbols]

1 passenger seat 2 front wheels 20 cylinders 26 radiator 80 feet 81 Tunnel part 82 Rear tunnel part 85 The rear end of the front tunnel E engine R rider Step part for S foot rest T tunnel section F floor step

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Claims (5)

[Claims] 1. A floor step disposed from the lower side of the riding seat to the front wheel side is provided with a pair of left and right foot step portions and a tunnel portion that covers the devices between the step portions. A scooter-type motorcycle that is configured and provided, in which the tunnel portion facing the rider's foot is formed in a front expanse shape whose width in the left-right direction is wider toward the front side. 2. The scooter type motorcycle according to claim 1, wherein the devices are an engine. 3. The scooter type motorcycle according to claim 1, wherein the devices are an engine and a radiator arranged in front of the engine. 4. The engine is set such that the axis of the cylinder is substantially along the front-rear direction, and the rear end of the front widening tunnel portion is located between the front end and the rear end of the cylinder in the front-rear direction. The scooter-type motorcycle according to claim 2 or 3, wherein 5. The rear tunnel portion connected to the rear end portion of the front widened tunnel portion is formed as a stopper portion that prevents the heel of the rider's foot from moving rearward. The scooter-type motorcycle according to any one of 3 and 4.