JP2002331977A - Scooter type vehicle - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent the mud splashed by a front wheel from proceeding to a steering shaft supporting bearing when raising the rear end of a front fender. SOLUTION: This scooter type vehicle 10 is a motorcycle comprising a front frame part 23 raised up from the front part of a center frame 22 for supporting a footrest 14, a head pipe 24 provided on the front frame part 23, a steering shaft 93 rotatably mounted on the head pipe through bearings 91 and 92 to steer the front wheel 96 by the steering shaft 93, and a front fender 97 arranged above the front wheel 96. A mudguard member 100 is arranged on the front frame part 23 in an upper position than the rear end 97b of the front fender 97. The mud splashed by the front wheel 96 can be prevented from proceeding to the bearings 91 and 92.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a scooter type vehicle, and more particularly to a structure for preventing mud splashed by front wheels from going to a bearing for supporting a steering shaft.

[0002]

2. Description of the Related Art In a vehicle such as a scooter, a so-called full cowling type in which the entire body frame is covered with a body cover is generally used. Such a scooter type vehicle is disclosed in, for example, JP-A-2000-313.
Japanese Patent No. 393, “Scooter type vehicle body frame” (hereinafter referred to as “prior art”) is known.

In the above prior art, as shown in FIGS. 1 and 2 of the publication, a front portion of a vehicle body frame F (the reference numerals are quoted in the publication; the same applies hereinafter) is covered with a front cover. The present invention relates to a scooter-type vehicle in which a leg shield 41a is provided at a rear portion of a front cover to cover a leg of a driver, and a lower front portion of a body frame F is covered by an under cover 41c.

In this scooter type vehicle, a front fender indicated by an imaginary line is arranged above a front wheel WF,
Mud splashed by the front wheel WF can be prevented from going upward. Further, the lower half of the front cover can prevent the mud splashed by the front wheel WF from moving upward. As described above, the conventional technique employs the full cowling-type vehicle body cover 41 to prevent the mud jumped up by the front wheels WF from going upward.

[0005] However, there is also a scooter-type vehicle of an exposed type (a naked type) in which only a part of the body frame F is covered with a body cover or not covered at all. In this case, as shown in the following FIG.
The front fender alone will prevent the mud that has been bounced up from going up.

FIG. 20 is a side view of a front half of a conventional scooter type vehicle, and shows a conventional scooter type vehicle 200.
The first half of is shown. Prior art scooter type vehicle 20
0, the front frame 202 is raised from the front of the center frame 201 upward, a head pipe 203 is provided on the front frame 202, and a steering shaft 206 is mounted on the head pipe 203 via bearings 204 and 205. Is rotatably mounted, and a front wheel 208 is rotatably mounted on the steering shaft 206 via a front fork 207.
This is a motorcycle in which a front fender 209 is arranged above the front wheel 208. According to the prior art, the front wheel 208
The front fender 209 can prevent the mud flipped up by the fender from going to the bearing 205. As a result, the performance of the bearing 205 can always be ensured.

[0007]

However, according to the above-mentioned conventional technique, the mud splashed by the front wheel 208 is prevented from going upward only by the front fender 209. Is relatively large. In particular, the mud that has jumped up
, It is necessary to lower the rear end 209 a of the front fender 209 to a position near the lower end of the center frame 201. The rear end 209 a of the front fender 209 enters between the center frame 201 and the front wheel 208. Center frame 2 only
The distance L10 from the front end of the front wheel 01 to the front wheel 208 is set to be large, and the front wheel 208 is arranged in front. As a result, front wheel 2
The distance W10 (wheel base W10) from the rear wheel 08 to the rear wheel (not shown) must be increased. As a result, the degree of freedom in designing the scooter type vehicle 200 is reduced. In order to maintain the distance L10, simply use the front fender 20
Raising the rear end 209 a of the 9 is not preferable because the splashed mud can face the bearing 205.

SUMMARY OF THE INVENTION It is an object of the present invention to provide a technique capable of preventing mud splashed up by a front wheel from going to a bearing for supporting a steering shaft even when a rear end of a front fender is raised.

[0009]

In order to achieve the above object, a first aspect of the present invention is to raise a front frame from the front of a center frame for supporting a footrest plate, and to attach a head to the front frame. In a scooter type vehicle in which a pipe is provided, a steering shaft is rotatably mounted on the head pipe via a bearing, and the front wheel is steered by the steering shaft, and a front fender is disposed above the front wheel. A mudguard member is disposed on the front frame at a position higher than the rear end to prevent the mud jumped up by the front wheel from going to the bearing.

When the mud splashed up by the front wheels is directed to the bearing for supporting the steering shaft, the mud directed to the bearing bounces down against the mudguard member. Also, when the mud splashed up by the front wheel hits the front frame portion and then goes to the bearing, the mud going to the bearing hits the mudguard member and bounces downward. Therefore, even if the rear end of the front fender is raised, it is possible to prevent the mud jumped up by the front wheel from going to the bearing. By raising the rear end of the front fender, the distance from the front end of the center frame to the front wheel can be reduced. As a result, the distance between the front and rear wheels (wheel base) can be reduced. To that extent, the degree of freedom in designing a scooter type vehicle can be increased.

According to a second aspect of the present invention, left and right leg shields for covering the driver's legs are provided on the left and right sides of the front frame portion, and a mudguard member is overlapped on the front surfaces of these leg shields.
The left and right leg shields are connected by this mudguard member.

The role of the reinforcing member for connecting and reinforcing the left and right leg shields can be also used by the mudguard member. Therefore, separate members for reinforcing the left and right leg shields are not required. Moreover, after the left and right leg shields are provided on the left and right sides of the front frame part, only the mudguard members are overlapped and connected to the front of these leg shields,
The right and left leg shields can be easily assembled.

[0013]

Embodiments of the present invention will be described below with reference to the accompanying drawings. Note that "before", "after",
“Left”, “right”, “up”, and “down” follow directions seen from the driver. Also, the drawings should be viewed in the direction of reference numerals. FIG. 1 is a perspective view of a scooter-type vehicle according to the present invention. A scooter-type vehicle 10 has a handle 11, a seat 12 that can be flipped up as shown by an arrow, and a seat under the seat that is opened and closed by the seat 12 and provided below the seat. Tray 13 and handle 1
1 and a flat step floor 14 disposed between the seat 12, a rear frame 31 is extended obliquely rearward and upward from the step floor 14, and a support member 32 is erected from the rear frame 31. By mounting the seat 12 so as to bridge over the upper end, an article storage space S1 surrounded by the seat 12 and the left and right support members 32 is formed, and the motorcycle has the article storage space S1 open front, rear, left and right.

The step floor 14 is a footrest plate provided with a leg shield 52 that extends integrally from the front end and rises up, and a storage section bottom plate 53 that integrally extends from the rear end. The leg shield 52 is a member that covers the front of the legs of the driver sitting on the seat 12.

FIG. 2 is a side view of the scooter type vehicle according to the present invention. The vehicle body frame 20 (vehicle body) of the scooter type vehicle 10 has a front half 21 and a rear half of which is bolted to a rear end of the front frame 21. Rear frame 31
This indicates that the frame is divided into two. Such a scooter type vehicle 10 has a rear frame 31 and a cylinder 4
Power unit 43 including engine 42 with 1 tilted forward
Is mounted so as to be able to swing, and the rear wheel 44 is driven by the power unit 43. An under cover 60 is disposed below the step floor 14, and the fuel tank is disposed in a space surrounded by the step floor 14 and the under cover 60. 70 is a two-wheeled vehicle.

In the drawing, reference numeral 81 denotes a headlamp support pipe also serving as a front carrier, 82 a headlamp, 83 an air cleaner, 84 a silencer, 85 a rear cushion,
86 is a rear fender, 87 is a tail lamp, and 88 is a stand.

FIG. 3 is an exploded view of the front frame, the step floor, the under cover, and the fuel tank according to the present invention, showing the relationship among the respective members. Front frame 21
Raises an elongated columnar front frame portion 23 upward from the front portion of the center frame portion 22, and the front frame portion 23
Is an aluminum die-cast product provided with a head pipe 24. The center frame portion 22 includes a pair of left and right side frames 25, 25 extending forward and backward, a front cross member 26 bridged between the front ends of the left and right side frames 25, 25, and a rear end of the left and right side frames 25, 25. A substantially U-shaped rear cross member 27 which is bridged between the rear view,
This is a substantially rectangular frame in plan view. Since it is a square frame, it has a space S2 vertically penetrating at the center.

The step floor 14 is integrally extended from the center of the vehicle width at the front end, and is an inner cover 51 having a substantially U-shape in plan view, which is a front opening, and is integrally extended from the left and right of the front end. Left and right leg shields 52,
52 are provided continuously. Such a step floor 14 is configured such that the left and right leg shields 52, 52 are arranged from the rear of the vehicle body (the front frame 21) to the front frame portion 23.
Is a footrest plate that is supported by the front frame 21 by extending to the left and right sides of the front frame 21, surrounding the rear portion of the front frame portion 23 with the inner cover 51, and overlapping the front frame 21.

The under cover 60 is mounted on the step floor 14.
And a cover member that is supported by the front frame 21 by being placed below the front frame 21 and overlapping the front frame 21. Such an undercover 60
Are a pair of left and right side frames 25, 25 extending back and forth.
An upper open storage recess 61 arranged in the space, that is, in the space S2 of the front frame 21, is integrally formed, and includes left and right outer covers 62, 62 extending integrally from the left and right front ends and rising. Left and right outer covers 62,
62 can be integrated with the leg shields 52, 52 by being superimposed on the front surfaces of the left and right leg shields 52, 52 and stopped by screws 63, 63.

This figure shows a fuel tank 70 as a container between a pair of left and right side frames 25, 25 extending forward and backward.
And an under cover 60 is provided under the fuel tank 70.
Indicates that the fuel tank 70 is covered with the step floor 14. For details, scooter type vehicle 1
0, the under cover 60 is attached to the left and right side frames 25,
25 from above, and the edge 6 of the under cover 60 is inserted.
4 and 64 are mounted on the left and right side frames 25, 25, and the fuel tank 70 is inserted into the storage recess 61 of the under cover 60 from above and stored therein.
The under cover 60, the fuel tank 70 and the step floor 14 are mounted on the edges 71, 71 of the fuel tank 70 by mounting the under cover 60, 71 on the edges 64, 64 of the under cover 60. , 25
It is characterized in that it has a superposed support structure for supporting by.

FIG. 4 is a perspective view of a main part of the scooter-type vehicle according to the present invention. FIG. FIG. Further, in this figure, the front end of the rear frame 31 is connected to the rear ends of the left and right side frames 25, 25 in the front frame 21 by bolts 33 (... indicates a plurality; the same applies hereinafter). Is shown. Some parts have been omitted to make the drawing easier to see.

FIG. 5 is a side view of the front half of the scooter type vehicle according to the present invention.
The steering shaft 93 is rotatably mounted via the steering shafts 1 and 92, the handle 11 (see FIG. 1) is mounted on the upper end of the steering shaft 93, and the bridge 9 is mounted on the lower end of the steering shaft 93.
4 shows that the front wheel 96 is rotatably mounted via the front fork 95 and the front fender 97 and the front fender 97 is mounted on the front fork 95. The front wheel 96 is steered by the steering shaft 93, and the upper portion of the front wheel 96 can be covered by the front fender 97.

The front fender 97 is characterized in that it is a relatively small cover member with its rear end 97a raised. Specifically, the rear end 97b of the front fender 97
(That is, the lower rear end) is the height from the center frame portion 22 to the head pipe 24, that is, the front frame portion 2
The height is set to approximately 1/3 from the bottom with respect to the total length of No.3. Since the rear end 97a of the front fender 97 is not lowered to the center frame 22, the rear end 97a does not enter between the center frame 22 and the front wheel 96.
The distance L1 from the front end of the center frame portion 22 to the front wheel 96 can be set small, and the front wheel 96 can be displaced rearward by the amount of no entry. As a result, the front wheels 96 to the rear wheels 4
4 (see FIG. 2), that is, the wheelbase W1 can be reduced. The scooter type vehicle 10
The degree of freedom in the design is increased.

According to the present invention, the rear end 9 of the front fender 97 is provided.
The mudguard member 100 is arranged at a position higher than 7b and in the front frame portion 23. Specifically, the mudguard member 100 is arranged on the front surface of the front frame portion 23.
The mudguard member 100 is a member that prevents the mud splashed by the front wheel 96 from going to the lower bearing 92 for supporting the steering shaft.

Further, in this figure, an electric component box 111 is attached to the head pipe 24, and the electric component box 111 is attached.
Shows that electrical components (not shown), such as a battery and an engine control unit, are accommodated. The electrical component box 111 includes a front board 112 attached to the front of the head pipe 24 and a dedicated cover 113 attached to the rear of the front board 112 so as to surround the head pipe 24. A headlamp support pipe 81 can be attached to the front of the front board 112.

FIG. 6 is an exploded view of the leg shield, the mudguard member, and the front board according to the present invention, showing the relationship among the members. The left and right leg shields 52, 52 form flange portions 52a, 52a extending left and right at the upper front ends, and have screw holes 52b, 52b penetrating through the flange portions 52a, 52a.

The mudguard member 100 is a substantially horizontal plate 1
01 and a vertical plate 10 extending downward from the front end of the horizontal plate 101
2 form a mudguard portion 103 having an inverted L-shape in side view, and hook arms 104, 104 having a substantially inverted U-shape in front view from above from the upper left and upper right portions of the vertical plate 102. It is a bent and integrally formed product made of a steel plate, which is extended and has flaky holding legs 105, 105 extending downward from the lower left and lower right portions of the vertical plate 102. The hook arms 104, 104 have screw holes 107, 107 which penetrate the hook portions 106, 106 which penetrate forward and rearward at the left and right outer positions.

According to the present invention, leg shields 52, 52 are provided on the left and right of the front frame portion 23 indicated by imaginary lines, and a mudguard member 100 is provided on the front surfaces of these leg shields 52, 52.
And the left and right leg shields 52, 52 are connected by the mudguard member 100. More specifically, the left and right leg shields 52 extend from the rear of the vehicle body to the left and right sides of the front frame portion 23, and the mudguard member 100 is lowered from above and in front of the front frame portion 23, so that the hook portion 106 is formed. , 106 to the flanges 52a, 52a
Of the leg shields 52, 52.

Thereafter, the front board 112 is superposed on the front surface of the mudguard member 100 from the front, and the screw holes 112a, 112a of the front board 112 and the screw holes 5 of the flanges 52a, 52a are formed.
2b, 52b and screw holes 10 of hook portions 106, 106
7 and 107 are aligned and fastened together with screws 114 and 114. Thus, the left and right leg shields 5
The mudguard member 100 can be attached to the leg shields 52, 52 by detachably connecting the front ends of the two and 52 with the mudguard member 100.

By connecting the left leg shield 52 and the right leg shield 52, the left and right leg shields 52, 52 can be reinforced to increase rigidity. The mudguard member 100 includes the left and right leg shields 52,5.
Since it also serves as a reinforcing member for the leg shield 5, the leg shield 5
No separate member is required to reinforce 2,52. Moreover, the assemblability of the left and right leg shields 52, 52 is enhanced.

FIG. 7 is a perspective view showing a mounting structure of the mudguard member according to the present invention.
FIG. 5 is a diagram showing a configuration in which a mudguard member 100 is attached to the front view from above in the front. Some parts have been omitted to make the drawing easier to see.

The back of the flanges 52a, 52a
6 and 106, and the outer covers 62 and 62
Press the leg shields 52, 52 on the front surface and press the leg 1
05, 105, leg shield 5
2 and 52 can be sandwiched by the mudguard members 100 to perform temporary fixing before bolting.

FIG. 8 is a perspective view showing a mounting structure of the mudguard member and the front board according to the present invention. The mudguard member 100 and the front board 112 are attached to the left and right leg shields 52 and 52 with screws 114 and 114. This indicates that the front ends of the left and right leg shields 52, 52 have been connected by the mudguard member 100. Some parts have been omitted to make the drawing easier to see.

FIG. 9 is a perspective view of the main part of the upper front part of the scooter type vehicle according to the present invention. The front frame part 23, the left and right leg shields 52, 52, the under cover 60, the front fender 97, the mudguard Member 100 and front board 1
12 is a diagram showing the relationship of No. 12 from the lower front. Some parts have been omitted to make the drawing easier to see. 121 is a front brake cable, and 122 is a speedometer cable.

FIG. 10 is a sectional view taken along the line 10-10 in FIG. 5, in which the front frame 23 is a substantially U-shaped cross-section with an open front. This shows that the horizontal plate 101 of the member 100 has been inserted. The front frame part 23 integrally includes four vertical ribs 23c... Extending from the bottom 23b of the groove 23a forward (to the left in the figure) and a plurality of horizontal ribs 23d. It is formed. The length of the four vertical ribs 23c is approximately の of the groove depth. The tips of the horizontal ribs 23d are vertical ribs 23c.
..Extending forward from the tip of.

On the other hand, the horizontal width of the horizontal plate 101 is slightly smaller than the width of the groove 23a, and the depth of the horizontal plate 101 is such that the front end 101a inserted into the groove 23a extends to the vicinity of the front end of the vertical rib 23c. is there. Such a horizontal plate 101 is inserted into the groove 2
By inserting it into the groove 3a, the front half of the groove 23a can be partitioned vertically (front and back in the figure). Further, the front end of the horizontal plate 101 vertically overlaps (overlaps) the front end portion 101a of the horizontal rib 23d.

The inner cover 51 is a substantially U-shaped cross-section that surrounds the left and right sides and the rear of the front frame 23 with a space. A throttle cable 123 and a rear brake cable 1 are provided in a space S3 between the left side wall of the front frame portion 23 and the left side wall of the inner cover 51.
24 and the front frame 23
Space S between the right side wall of the inner cover 51 and the right side wall of the inner cover 51
4 can be passed through the wire harness 125. Therefore, the throttle cable 123,
Rear brake cable 124 and wire harness 12
By passing the wire 5, the wires 123 to 125 can be protected.

FIG. 11 is an operation diagram of the mudguard member according to the present invention. Here, a straight line Ta in contact with the rear end 97b of the front fender 97 and in contact with the rear outer peripheral surface of the front wheel 96
Will be referred to as “mud splash boundary line Ta”. In the area A1 ahead of the mud splash boundary line Ta, the mud splashed by the front wheels 96 is blocked by the front fender 97, and therefore cannot face the lower bearing 92 for supporting the steering shaft. On the other hand, in the area A2 behind the mud splash boundary line Ta, the mud bounced up by the front wheel 96 may hit the front portion of the front frame portion 23 and bounce back toward the bearing 92.

Therefore, in the present invention, a mudguard member 100 is disposed above the rear end 97b of the front fender 97 and on the front frame portion 23 to prevent the mud jumped up by the front wheel 96 from going to the bearing 92. It is characterized by having done. More specifically, the rear end 97 of the front fender 97
b and on the line of the mud splash boundary line Ta, and when the mud jumped up by the front wheel 96 hits the front part of the front frame part 23, the mud bounces back toward the bearing 92. The horizontal plate 101 of the mudguard member 100 is arranged.

Further, the front frame portion 23 is provided with a groove 23
A plurality of horizontal ribs 23d extending from the bottom 23b of FIG. The mudguard member 100 is arranged on at least one of the ends of the horizontal ribs 23d so that the end of the horizontal plate 101 vertically overlaps with a slight gap. By laminating the horizontal rib 23d and the horizontal plate 101 up and down, a labyrinth effect can be expected. That is, there is no fear that mud will pass through a slight gap between the horizontal rib 23d and the horizontal plate 101. In addition,
The size of the gap and the presence or absence of the gap are arbitrary.

When the mud splashed by the front wheel 96 hits the lower surface of the horizontal plate 101, the hit mud bounces downward. In addition, the mud that has been jumped up is located in the front frame portion 23.
When it hits the front part of, for example, the inside of the groove 23a or the vertical rib 23c, the hit mud hits the lower surface of the horizontal plate 101, the back surface of the vertical plate 102, and the lower surface of the horizontal rib 23d and rebounds downward.
When the splashed-up mud hits the horizontal rib 23d, the hit mud hits the lower surface of the horizontal plate 101, the back surface of the vertical plate 102, and the lower surfaces of the other horizontal ribs 23d. Thus, the rear end 97 of the front fender 97
Even if a is raised, it is possible to prevent the mud splashed by the front wheel 96 from going to the bearing 92 for supporting the steering shaft.

FIG. 12 is a left side sectional view of the vehicle body frame, the step floor, the undercover, and the fuel tank according to the present invention. A storage recess 61 is disposed in the space S2 of the front frame 21. This shows that the fuel tank 70 is arranged in a space surrounded by the step floor 14 and the storage recess 61, which covers the step floor 14. Since the storage recess 61 is arranged below the step floor 14, a container such as the fuel tank 70 can be easily arranged by effectively utilizing the empty space below the step floor 14.

Further, in this figure, an opening portion 54 penetrating up and down is opened at the rear of the step floor 14, and a refueling lid 55 for opening and closing the opening portion 54 on the step floor 14.
Opening portion 54 when the refueling lid 55 is opened
Shows that the refueling cap 72 of the fuel tank 70 is exposed. The fuel supply cap 72 with the fuel supply port of the fuel tank 70 closed is protruded upward from the upper surface of the step floor 14. For this reason, the refueling lid 55 has a shape bulging upward.

The fuel system 130 including the fuel filter 132 and the fuel pump 134 is disposed in a space S5 surrounded by the under cover 60 for covering and protecting the bottom of the fuel tank 70 and the step floor 14, as shown in FIG. It is arranged at a position close to the cylinder 41 of the engine 42 shown. Therefore, the heat shield plate 140 is provided so that the fuel system 130 including the fuel filter 132 and the fuel pump 134 is not affected by the heat of the engine 42 having a relatively high temperature.
To cover it. The details of the heat shield plate 140 will be described later.

FIG. 13 is a sectional view taken along line 13-13 of FIG. The left and right side frames 25, 25 are substantially U-shaped cross-section members as viewed from the rear, provided with upper open grooves 25e, 25e extending in the front-rear direction (front and back directions in the drawing). More specifically, the left side frame 25 includes an inner upright wall 25a close to the vehicle interior, and a horizontal wall 25b extending outward from the lower end of the inner upright wall 25a.
And an outer upright wall 25c protruding upward from the outer end of the horizontal wall 25b toward the outside of the vehicle body, and an edge 25d (flange 25d) extending horizontally from the upper end of the outer upright wall 25c to the outside of the vehicle body. It is. The upper end of the inner standing wall 25a is lower than the edge 25d. Inner wall 25a and horizontal wall 25b
The space surrounded by the outer standing wall 25c is the groove 25e. The right side frame 25 is a member symmetrical to the left side frame 25 with respect to the vehicle center line CL passing through the center of the vehicle.

The undercover 60 integrally forms edges 64, 64 (flanges 64, 64) extending horizontally from the upper opening end of the storage recess 61 to the left and right, that is, outwardly of the vehicle body. A substantially U-shaped bulging portion 65, 65 extending in the front-back direction (the direction of the front and back in the drawing) is provided integrally with the rear surface 64.

Since the bulging portions 65 are substantially U-shaped,
An upper open elongated recess 6 extending in the front-rear direction (front-back direction in the figure)
6,66. Wires such as the throttle cable 123 and the wire harness 125 can be passed through the concave portions 66, 66.

The step floor 14 has bosses 56... Extending downward from left and right on the lower surface, and edges 57, 57 extending downward from the left and right ends.
This is a substantially flat member in which 57 is put on the edges 64, 64 of the under cover 60.

This figure shows the left and right side frames 25, 2
5, edges 64d, 6d of the under cover 60 are attached to the edges 25d, 25d.
4, and the edges 71, 71 of the fuel tank 70 are placed on the edges 64, 64 of the under cover 60.
The step floor 14 is placed on the first floor 71 and the bosses 56... Of the step floor 14 are applied to the edge 71 of the side frames 25, 25 and the edge 6 of the under cover 60.
4, 64, the edges 71, 71 of the fuel tank 70, and the step floor 14 are overlapped, and furthermore, the bolts 151,..., And nuts 152,. Indicates that they are bound. In this way, the left and right side frames 25, 25 can support the under cover 60, the fuel tank 70, and the step floor 14 to sufficiently receive the load.

Moreover, the left and right side frames 25, 25
The under cover 60, the fuel tank 70, and the step floor 14 can be assembled on top of each other in this order, and the assembling structure for assembling these three parts 60, 70, 14 can be simplified. Thus, the number of parts to be assembled can be reduced, and assemblability can be improved. For example, as shown in FIG. 3, four sets of bolts 151... And nuts 152.
It is only necessary to fasten the three parts 60, 70 and 14 together. Then, the three components 60, 70, 14 can be integrated with each other only by superposing the three components 60, 70, 14 from above on the left and right side frames 25, 25, which is optimal for assembling the modules, and has good assemblability. Therefore, the scooter type vehicle 10
Cost can be reduced.

As described above, the under cover 60
The substantially horizontal edges 64, 64 are overlapped with the other parts on the left and right side frames 25, 25 from above, and the bolts 1
.. And nuts 152.
Therefore, as compared with the conventional connection structure in which the side frames 25 are bolted to the side frames 25, 25, the under cover 6 is not required.
0 can be made thin. Therefore, when the periphery of the step floor 14 is viewed from the side, the appearance is slim, and the appearance of the scooter type vehicle 10 can be enhanced.

Further, the left and right side frames 25, 2
5, the upper open grooves 25e, 25e extending back and forth
The under cover 60 can be easily positioned with respect to the left and right side frames 25, 25 only by fitting the bulging portions 65, 65 extending to the front and rear provided on the edges 64, 64 of the under cover 60. Therefore, assemblability can be further improved. In addition, a separate member for positioning is not required.

Furthermore, the nut 152 can be positioned on the step floor 14 by inserting the clip 153 with the nut 152 attached to the edge 25d of the step floor 14. The presence or absence of the clip 153 is optional.

By the way, the storage recess 61 is located at the center line C of the vehicle body.
It is arranged from L to the right or left shown in the figure.
By disposing the storage recess 61 rightward or leftward, the gap S between the side frame 25 and the side of the storage recess 61 can be reduced.
6, a wire such as the rear brake cable 124 can be passed through the gap S6.

FIG. 14 is a sectional view taken along line 14-14 of FIG. 12, and shows that the bosses 58... Extend from the lower surface of the step floor 14 toward the edges 71 of the fuel tank 70.
By the bosses 58...
4 and the edges 71 of the fuel tank 70 can be prevented from rising.

FIG. 15 is a perspective view showing the mounting structure of the front frame and the under cover according to the present invention, and shows that the under cover 60 is superimposed on the front frame 21. Some parts have been omitted to make the drawing easier to see.

FIG. 16 shows a front frame according to the present invention.
FIG. 4 is a perspective view showing a mounting configuration of an under cover and a fuel tank, and shows that an under cover 60 and a fuel tank 70 are superimposed on a front frame 21. The left and right positioning protrusions 6 are raised upward from the edges 64, 64 of the under cover 60.
4a and 64a, and these positioning projections 64a and 6a are provided.
By contacting the rear ends of the edges 71, 71 of the fuel tank 70 with 4 a, the fuel tank 70
Can be positioned in the front-rear direction. Some parts have been omitted to make the drawing easier to see. 73 is a fuel level gauge.

FIG. 17 is a diagram showing the relationship between the undercover and the wire according to the present invention, and shows the configuration of the undercover 60 viewed from the upper right. This figure shows that the under cover 60
(1) The throttle cable 123 is passed through the left recess 66, and the guide pieces 66a projecting from the recess 66 are provided.
(2) The wire harness 125 is passed through the right concave portion 66, and the wire harness 125 is raised by the guide pieces 66b projecting from the concave portion 66. (3) Left inner standing wall 2
5a, the rear brake cable 124
This shows that the support is held by a clamper 67 provided on the inner standing wall 25a.

Returning to FIG. 13 once, the wire rods such as the throttle cable 123 and the wire harness 125 are passed through the concave portions 66, 66 of the bulging portions 65, 65. The wire can be easily passed between the step floor 14 and the under cover 60 while securing the capacity of the space S5 surrounded by the under cover 60.

Moreover, guide portions for guiding the wires 123, 125, that is, the recessed portions 66, 66 can be easily provided between the step floor 14 and the under cover 60. And the wire rod 123,
Since these wires 123 and 125 can be guided over a sufficient length, these wires 123 and 125 are connected to the body frame 20.
(See FIG. 1), and can be easily routed without rubbing against other members.

FIG. 18 shows a front frame according to the present invention,
FIG. 3 is a perspective view showing a mounting configuration of an under cover and a fuel system, which is a view of a fuel system 130 viewed from a rear upper right, where a fuel filter 132 is disposed on a vehicle body left side, and a fuel pump 134 is disposed on a vehicle body right side; A check valve (check valve) 136 is disposed at the upper right of the pump 134, and the fuel pump 134 is attached to the rear cross member 27 of the front frame 21 via the stay 138.

The fuel system 130 is connected to the outlet 7 of the fuel tank 70.
4 (see FIG. 12), the inlet of the fuel filter 132 is connected via a hose 131, the outlet of the fuel filter 132 is connected to the suction port of a fuel pump 134 via a hose 133, and the outlet of the fuel pump 134 is connected to a hose. An inlet of the check valve 136 is connected via 135, and an outlet of the check valve 136 is connected to an engine fuel injection system (not shown) via a hose 137.

The heat shield plate 140 is formed integrally with the under cover 60 made of a resin material, and includes a left shield portion 141 that covers around the fuel filter 132 and a fuel pump 13.
4 and a right / left shielding part 141,
And a central shielding part 143 between the two. Central shielding part 1
The lower end of 43 is formed by integrally forming a thin hinge portion 144 with the under cover 60. For this reason, the central shielding part 143 can be opened and closed back and forth with the hinge part 144 as a base end. The central shield 143 is opened as shown by the arrow, and the connection between the fuel filter 132 and the fuel pump 134 is maintained.
You can check.

FIG. 19 shows a front frame according to the present invention.
FIG. 9 is a perspective view showing the mounting configuration of the under cover and the fuel system, and is a view of the fuel system 130 viewed from the lower left rear, and the check valve 136 is removed from a portion 146 of the under cover 60 that covers the right side frame 25. This shows that the covering heat shield 147 has been extended.

In the embodiment of the present invention,
The scooter-type vehicle 10 is not limited to a scooter-type motorcycle, but may be, for example, a scooter-type motorcycle or a scooter-type automobile. The containers housed in the under cover 60 are not limited to the fuel tank 70, and include various containers such as a container for storing batteries and electrical components, and a radiator reserve tank.

[0066]

According to the present invention, the following effects are exhibited by the above configuration. According to the first aspect of the present invention, the mudguard member that prevents the mud splashed up by the front wheels from moving toward the bearing for supporting the steering shaft is disposed on the front frame at a position higher than the rear end of the front fender. Even if the rear end of the front fender is raised, mud splashed by the front wheel can be prevented from going to the bearing. By raising the rear end of the front fender, the distance from the front end of the center frame to the front wheel can be reduced. As a result,
The distance between the front and rear wheels (wheel base) can be reduced.
To that extent, the degree of freedom in designing a scooter type vehicle can be increased.

According to a second aspect of the present invention, left and right leg shields for covering the driver's legs are provided on the left and right sides of the front frame portion, and a mudguard member is overlapped on the front surfaces of these leg shields.
Since the left and right leg shields are connected by the mudguard member, the role of the reinforcing member for connecting and reinforcing the left and right leg shields can be also used by the mudguard member. Therefore, separate members for reinforcing the left and right leg shields are not required. Moreover, after the left and right leg shields are provided on the left and right of the front frame part, only the mudguard members are overlapped and connected to the front of these leg shields,
With a simple configuration, the assemblability of the left and right leg shields can be improved.

[Brief description of the drawings]

FIG. 1 is a perspective view of a scooter type vehicle according to the present invention.

FIG. 2 is a side view of the scooter type vehicle according to the present invention.

FIG. 3 is an exploded view of a front frame, a step floor, an under cover, and a fuel tank according to the present invention.

FIG. 4 is a perspective view of a main part of the scooter type vehicle according to the present invention.

FIG. 5 is a side view of the front half of the scooter type vehicle according to the present invention.

FIG. 6 is an exploded view of the leg shield, the mudguard member and the front board according to the present invention.

FIG. 7 is a perspective view showing an attachment configuration of a mudguard member according to the present invention.

FIG. 8 is a perspective view showing a mounting structure of a mudguard member and a front board according to the present invention.

FIG. 9 is a perspective view of a main part of an upper front part of the scooter type vehicle according to the present invention.

FIG. 10 is a sectional view taken along line 10-10 of FIG. 5;

FIG. 11 is an operation view of the mudguard member according to the present invention.

FIG. 12 is a left side cross-sectional view around the vehicle body frame, the step floor, the undercover, and the fuel tank according to the present invention.

13 is a sectional view taken along line 13-13 of FIG.

FIG. 14 is a sectional view taken along line 14-14 of FIG. 12;

FIG. 15 is a perspective view showing a mounting structure of a front frame and an under cover according to the present invention.

FIG. 16 is a perspective view showing a mounting structure of a front frame, an under cover, and a fuel tank according to the present invention.

FIG. 17 is a diagram showing the relationship between an undercover and a wire according to the present invention.

FIG. 18 is a perspective view showing a mounting structure of a front frame, an under cover, and a fuel system according to the present invention.

FIG. 19 is a perspective view showing a mounting structure of a front frame, an under cover, and a fuel system according to the present invention.

FIG. 20 is a side view of the front half of a conventional scooter type vehicle.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 10 ... Scooter type vehicle, 14 ... Footrest board (step floor), 22 ... Center frame part, 23 ... Front frame part, 24 ... Head pipe, 52 ... Leg shield, 9
1, 92: bearing, 93: steering shaft, 96: front wheel,
97: front fender, 97b: rear end of front fender, 100: mudguard member.

Continued on the front page (72) Inventor Susumu Michisaka 1-4-1 Chuo, Wako-shi, Saitama F-term in Honda R & D Co., Ltd. 3D011 AG01 AK13

Claims (2)

[Claims] 1. A front frame part is set up from a front part of a center frame part supporting a footrest plate, and a head pipe is provided on the front frame part. A steering shaft is rotated through a bearing on the head pipe. A scooter-type vehicle having a front fender disposed above the front wheel, wherein the front fender is disposed at a position higher than a rear end of the front fender. A scooter-type vehicle comprising a mudguard member for preventing mud splashed by a front wheel from heading toward the bearing. 2. Right and left leg shields covering the driver's legs are provided on the left and right sides of the front frame portion, and the mudguard members are superposed on the front surfaces of these leg shields. The scooter-type vehicle according to claim 1, wherein said leg shield is connected.