JP2003237664A - Small-sized vehicle grab rail installing structure - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To make a seat smart, and to improve outer appearance by hiding a rear part both side edges of the seat by a grab rail. <P>SOLUTION: The grab rail 29 rising by detouring a rear part of the seat 34 is integrally installed on a rear part of right and left frames 14. The rear part of the seat 34 is supported by right and left inwardly projecting portion 31 of the grab rail 29, and an installing portion of the grab rail 29 to a grab rail stay 41 is arranged at a place lower than the right and left inwardly projecting portion 31 of the grab rail 29. <P>COPYRIGHT: (C)2003,JPO

Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a mounting of a grab rail in a small vehicle such as a scooter-type motorcycle or a three-wheeled vehicle, in which a front wheel steering bar handle is steered by sitting on a seat. It is about structure. 2. Description of the Related Art In a small vehicle such as a scooter having a storage box capable of storing large articles such as a helmet and a grab rail, a seat is supported on an upper edge of the storage box. The storage box is fixed to the frame body. The grab rail is attached to the frame body via a bracket at a rear portion thereof, and is fastened together with a partition plate integral with the storage box by bolts and nuts via another bracket at a front portion thereof. To the frame body. The front portion of the seat is supported by the upper edge of the storage box, but the rear portion of the seat is separated from the partition and the grab rail integrated with the rear portion of the storage box. Does not bear the load. Therefore, when a passenger sits on the rear part of the seat, a large bending stress is generated in the seat in a direction in which the rear part of the seat is bent downward, and the load applied to the seat is concentrated on the front part of the seat. In order to prevent this, it is necessary to separately provide a receiving member that bears the load at the rear portion of the seat, and there has been a problem that the number of parts increases. SUMMARY OF THE INVENTION The present invention relates to an improvement in a grab rail mounting structure for a small vehicle which overcomes the above-mentioned drawbacks. A small vehicle in which a box is arranged,
The left and right frames of the rear body of the small vehicle are provided so as to be inclined upward from the vehicle body lower portion from the vehicle body center portion to the vehicle rear portion, and the left and right sides of the substantially U-shaped grab rail in plan view are provided.
In the grab rail mounting structure for a small vehicle attached to the rear part of the left and right frames, the grab rail is screwed to the vehicle body, and is integrated with the left and right frames in a positional relationship vertically overlapping via a grab rail stay. Attached, the rear portion of the seat is supported by left and right inward protrusions provided on the grab rail, and the left and right inward protrusions have two left and right surface portions that receive the load of the sheet on the upper surface thereof, The grab rail mounting portion for at least a part of the grab rail stay is located substantially immediately below an outer edge of the seat, and is located outside the storage box in the vehicle width direction and on both left and right sides of the grab rail adjacent to the mounting portion. It is located one step lower than the inward protrusion, and is located outside the left and right inner protrusions on both left and right sides of the grab rail adjacent to the mounting portion. It is characterized in. According to the first aspect of the present invention, since the rear side edges of the seat are hidden by the grab rails, the seat looks smart and the appearance is improved. In addition, since the sheet is supported at the point where the strength and rigidity of the grab rail are the highest, the rear portion of the sheet is firmly and stably supported. Furthermore, the mounting rigidity of the grab rail on the vehicle body is high, and the grab rail can be easily held, making it easy to handle small vehicles and raising and lowering the stand. Is good. An embodiment of the present invention shown in FIGS. 1 to 8 will be described below. The power unit 2 mounted on the scooter type motorcycle 1 has an air-cooled internal combustion engine 3 whose cylinder head is directed slightly upward from the front, and a V-belt type which is directed rearward from the left side of the air-cooled internal combustion engine 3. The continuously variable transmission 4 is integrally connected to the V-belt type continuously variable transmission 4. A rear wheel 5 is integrally fitted to an output shaft (not shown) of the V-belt type continuously variable transmission 4, and the power unit 2 is an air-cooled type. A hanger 6 located above a crank portion of the internal combustion engine 3 is attached to a bracket 8 of the left and right rear frames 7 so as to be able to swing up and down via a link 9, and absorbs near a rear end of the V-belt type continuously variable transmission 4. Apparatus 1
The scooter-type motorcycle 1 is supported by a rear wheel 5 which is supported by a bracket 11 of a rear frame 7 via a rear wheel 0 and is driven to rotate by an output of the power unit 2. The left and right rear frames 7 are located near the front end of the air-cooled internal combustion engine 3 and in front of the bracket 11, and are integrally connected to each other by cross members 12 and 13. 7, a front end of a curved tail pipe 14 is integrally fitted to the rear end, a box stay 15 is integrally fixed to the front cross member 12, and the rear cross member 13 and the tail pipe 14 are joined together. The tank stays 16 and 17 are integrally fixed. Further, a helmet storage box 18 capable of storing a full-face helmet (not shown) is extended rearward to form a tank cover 19, and an opening is formed at the bottom of the helmet storage box 18. The helmet storage box 18 is mounted on the box stay 15, and is penetrated upward from below through the box stay 15 (not shown). Attached to the box stay 15 with bolts,
As shown in FIG. 4, the tank cover 19 has
An opening 21 through which a tank cap 24 of a fuel tank 23 can be exposed, and a bulging portion which rises upward to avoid an electric signal extracting code of a fuel gauge 25 projecting upward from an upper surface of the fuel tank 23. 22 are provided. Further, as shown in FIG. 3, tank stays 27 project from the left and right rear frames 7 at positions rearward of the front and rear cross members 13 as shown in FIGS. 3 and 5. The flange 26 formed on the upper outer periphery of the fuel tank 23 is provided with a tank stay 16 of the rear cross member 13, a tank stay 17 of the tail pipe 14, and a tank stay 27 of the left and right rear frames 7.
The fuel tank 23 is integrally attached to the left and right rear frames by bolts (not shown) which are in contact with the left and right and penetrate through the flange 26 and are screwed to the tank stays 16, 17, 27. Further, as shown in FIG. 3, a front garage rail stay 28 is integrally provided on the left and right rear frames 7 at a position intermediate between the rear cross member 13 and the tank stay 27. A rear gable rail stay 41 is integrally attached to the tail pipe 14 upward, and the mounting bases 30 at both ends of the grab rail 29 penetrate the mounting base 30 from above to below as shown in FIGS. A bolt 42 is integrally screwed to the front grab rail stay 28 by a bolt (not shown) screwed to the front grab rail stay 28, and passes through the grab rail 29 and the rear grab rail stay 41.
A nut 43 is screwed into the lower part of the grab rail 29.
A rear outer peripheral portion of the tank cover 19 integrated with the helmet storage box 18 is mounted on the distal end of the left and right inwardly projecting support portion 31. As shown in FIGS. 2 to 4, a seat pivotal support portion 32 is formed at the upper front end of the helmet storage box 18, and a seat support portion 33 is provided on the entire outer peripheral edge of the upper portion of the helmet storage box 18. Is formed,
The front end of the seat bottom plate 35 of the seat 34 is pivotally attached to the seat pivot 32 so as to swing up and down, and a seal 38 is integrally fitted to the outer peripheral portion of the lower surface of the seat bottom plate 35 as shown in FIG. Is being worn. When the seat 34 is tilted downward to lock a seat locking device (not shown), the helmet storage box 18 is airtightly sealed by a seat bottom plate 35 and a seal 38, and the seat 34 is attached to the outer peripheral portion of the seat bottom plate 35. Helmet storage box 1 through the seal 38 of
8 is supported by the sheet support portion 33. The sheet 34 is constituted by placing a filling 36 on a sheet bottom plate 35 and stretching a sheet skin 37 on the upper surface thereof. On the lower surface of the seat support portion 33 of the helmet storage box 18, a rear body cover 40 is stretched, and the rear frame 7 and the helmet storage box 1 are provided.
8 is covered with a rear body cover 40. Since the embodiment shown in FIGS. 1 to 8 is constructed as described above, the seat 34 is tilted downward to lock the unillustrated sheet locking device.
By holding the bar handle 39 and the grab rail 29 with both hands and pushing it back and forth, the scooter-type motorcycle 1 can be turned around, and a stand (not shown) can be raised or lowered. In the locked state, if the seat locking device is unlocked, the seat 34 can be opened upward around the seat pivot 32 and the seat bottom plate 35 of the helmet storage box 18, and the helmet storage box 18 can be opened. 18, a full-face type helmet (not shown) can be inserted, or the full-face type helmet can be taken out of the helmet storage box 18, and the tank cap 24 of the fuel tank 23 is removed.
3 can be refueled. If an opening is formed instead of the protruding portion 22, the remaining fuel amount of the fuel gauge 25 can be visually checked through the opening. Further, in a state where the seat locking device is locked with the seat 34 lying down, the seal 38 is attached to the entire outer peripheral portion of the seat bottom plate 35, so that the inside of the helmet storage box 18 is kept airtight. Seat 3 was blown by wind and rain, or water jumping from the road surface
4 and the helmet storage box 18
The intrusion of water into the inside is surely prevented. Further, since a cross member for supporting the tank cover 19 is not required, the box stay 1 penetrates through the front lower end of the helmet storage box 18.
The helmet storage box 18 can be removed from the rear frame 7 of the scooter type motorcycle 1 by removing bolts (not shown) screwed to the fuel tank 5, and the fuel tank can be removed without being hindered by members for supporting the tank cover 19. 23 can be easily removed or replaced. Further, since the maintenance lid 20 is pivotally attached to the bottom of the helmet storage box 18 so as to be openable and closable, the air-cooled internal combustion engine 3 can be opened without opening the maintenance lid 20 without removing the helmet storage box 18.
Maintenance and maintenance of an upper intake system (not shown) and accessories can be easily performed. Further, since the tank cover 19 behind the helmet storage box 18 is supported by the inwardly projecting support portion 31 of the grab rail 29, the tank cover 19 is provided.
By omitting a special stay or the like for supporting the device, the number of parts can be reduced and cost can be reduced. Further, the lower end of the front portion of the helmet storage box 18 and the left and right outer edges of the tank cover 19 are connected to the left and right inwardly projecting support portions 31 of the box stay 15 and the grab rail 29.
And the helmet storage box 18 and the tank cover 19 can be stably held. Further, the upper part of the fuel tank 23 is covered with a tank cover 19 behind the helmet storage box 18, and the tank cover 19 is covered with a seat bottom plate 35.
In addition, since the grab rail 29 is arranged on the side of the overlapping portion and the rear body cover 40 covers the lower portion of the overlapping portion, the upper portion of the fuel tank 23 can be reliably blocked to improve the appearance. The mounting base 30 of the grab rail 29 and the inwardly projecting support 31 may be formed as shown in FIG.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a side view of a scooter type motorcycle as a small vehicle having a support structure for a seat lower storage box according to the present invention. FIG. 2 is an enlarged perspective view of a main part of FIG. FIG. 3 is a vertical cross-sectional view of the scooter-type motorcycle cut through a rear portion of the scooter-type motorcycle through a center in a vehicle width direction of the motorcycle. FIG. 4 is a plan view showing a state where a sheet is removed in FIG. 3; FIG. 5 is a plan view showing a state where a helmet storage box and a tank cover are removed in FIG. 4; FIG. 6 is an enlarged sectional view of a main part, taken along the line IV-IV in FIG. 4; FIG. 7 is a plan view of a grab rail. FIG. 8 is a rear view of the grab rail. FIG. 9 is a perspective view of a main part of a grab rail according to another embodiment. [Description of Signs] 1 ... Scooter type motorcycle, 2 ... Power unit, 3 ... Air-cooled internal combustion engine, 4 ... V-belt type continuously variable transmission, 5 ... Rear wheel, 6 ... hangers, 7 ...
Rear frame, 8 ... bracket, 9 ... link,
10: shock absorber, 11: bracket, 12, 1
3 ··· Cross member, 14 ··· Tail pipe, 15
... box stay, 16, 17 ... tank stay, 18 ... helmet storage box, 19 ... tank cover, 20 ... maintenance lid, 21 ... opening, 22 ... protruding part , 23 ... fuel tank, 24
..Tank cap, 25 ... Remaining meter, 26 ...
・ Flange, 27 ・ ・ ・ Tank stay, 28 ・ ・ ・ Front grab rail stay, 29 ・ ・ ・ Grab rail, 30 ・
..Mounting base, 31 ... inwardly projecting support, 32
.Seat pivot, 33 ... Seat support, 34 ...
Seat, 35: Seat bottom plate, 36: Filling, 37
... Seat skin, 38 ... Seal, 39 ... Bar handle, 40 ... Rear body cover, 41 ... Back grab rail stay, 42 ... Bolt, 43 ... Nut.

Claims (1)

Claims 1. A small vehicle having a storage box disposed below a seat, wherein left and right frames of a rear vehicle body of the small vehicle extend upward from a vehicle body lower portion from a vehicle body center portion to a vehicle body rear portion. The left and right sides of a substantially U-shaped grab rail in plan view are attached to the rear portions of the left and right frames, in a grab rail mounting structure for a small vehicle, wherein the grab rail is screwed to the vehicle body. The grab rail stay is vertically attached via the grab rail stay, and is integrally attached to the left and right frames, the rear portion of the seat is supported by left and right inwardly protruding portions provided on the grab rail, and the left and right both sides are supported. The inwardly protruding portion has two left and right surface portions on the upper surface thereof for receiving a load of the sheet, and the grab rail mounting for at least a part of the grab rail stay. A catch portion is located immediately below the outer edge of the seat, at a location outside the storage box in the vehicle width direction, and at a position one step lower than the left and right inward projections on the left and right sides of the grab rail adjacent to the attachment portion. A grab rail mounting structure for a small vehicle, wherein the grab rail mounting structure is located outside the left and right inwardly protruding portions of the grab rail adjacent to the mounting portion.