JP3487362B2 - Seat support structure for small vehicles - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a seat support structure in which a seat is supported by a grab rail in a small vehicle such as a scooter type motorcycle or a motorcycle which leans on a seat and steers a front wheel steering bar handle. It is a thing.

[0002]

2. Description of the Related Art In a small vehicle such as a scooter having a storage box capable of storing a large article such as a helmet and a grab rail, a seat is supported by an upper edge of the storage box. The storage box is fixed to the frame body.

Further, the grab rail is attached to the frame body at its rear portion via a bracket, and is fastened at its front portion together with a partition plate integral with the storage box by bolts and nuts via other brackets. Is attached 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 plate and grab rail integral with the rear portion of the storage box, and the partition plate and the grab rail are seated. Does not bear the load of.

Therefore, when a passenger sits on the rear part of the seat, a large bending stress is generated in the seat in the direction in which the rear part of the seat bends downward, and the load applied to the seat concentrates on the front part of the seat. In order to prevent it, it is necessary to separately provide a receiving member that bears a load on the rear portion of the seat, and there is a problem that the number of parts increases.

[0006]

SUMMARY OF THE INVENTION The present invention relates to an improvement in a seat support structure for a small-sized vehicle that overcomes the above drawbacks. The invention according to claim 1 has a storage box disposed below the seat. In a small-sized vehicle, the left and right frames of the rear body of the small-sized vehicle are tilted upward from the lower part of the vehicle body from the center part of the vehicle body to the rear part of the vehicle body, and the rear parts of the left and right frames bypass the rear part of the seat and rise upward. The rising grab rail is attached integrally, and the storage box
Formed a substantially flat extension that extends backward from the storage part
The seat is supported over the storage portion of the storage box and the substantially flat plate-shaped extension portion, and the rear portion of the seat is supported by the grab rail via the substantially flat plate-shaped extension portion of the storage box. The tank is supported by the left and right inward projecting support portions of the storage box , and the tank is disposed below the substantially flat extension portion of the storage box. The substantially flat extension portion has an opening at a position located above the cap of the tank. Is formed.

The invention according to claim 1 is configured as described above, so that the grab rail is not disturbed,
By removing or opening the sheet, the article can be easily put in the storage section of the storage box, or the article can be easily taken out from the storage section of the storage box.

According to the invention of claim 1, the left and right frames are
Since a grab rail that bypasses the rear part of the seat and rises upward is integrally attached to the rear part of the chassis, the grab rail can be used to support the rear part of the vehicle body or easily pull it up. Therefore, it is possible to easily handle the vehicle body and raise and lower the stand.

Further, in the invention according to claim 1,
The load applied to the rear of the seat is guided through the storage box.
Are retained by Rabureru, also, the sheet storage box
It is supported over the storage part of the box and the substantially flat extension part.
As a result, no large bending stress is generated in the seat, and no large local force is applied to the seat or the storage box.

In this way, for grab rails with little deformation
Substantially flat extension behind the seat and storage compartment
Since it is not necessary to particularly increase the strength and rigidity of the seat and the storage box, it is possible to avoid preparing a seat supporting component that supports the rear portion of the seat separately, so that the cost can be reduced.

[0011] Furthermore, the tank is arranged below the substantially flat extension extending integrally backward from the storage portion of the storage box, the said substantially flat extension, positioned above the cap of the tank Since the opening is formed in the place, it is stored
The box storage part and the substantially flat extension part
The structure is reinforced and has a strong structure, which enables weight reduction, and the tank is covered with the rear substantially extended flat plate portion of the storage portion of the storage box, which improves the appearance without the need for a separate cover. It is easy to inject the filling material into the tank , and the number of parts is reduced to reduce the cost.
Ability and ing.

According to the second aspect of the invention, a large helmet such as a full-face helmet can be stored in the storage box.

Further, according to the third aspect, the storage box is supported at three points by the left and right inward projecting support portions of the grab rail and the cross members between the left and right claims, so that the storage box is supported. Is stably held on the vehicle body.

[0014]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS 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 includes an air-cooled internal combustion engine 3 having a cylinder head directed slightly upward from the front, and a V-belt type engine having the cylinder head directed rearward from the left side of the air-cooled internal combustion engine 3. The continuously variable transmission 4 is integrally connected to each other, the rear wheel 5 is integrally fitted to the 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 the crank of the internal combustion engine 3 is attached to brackets 8 of the left and right rear frames 7 via a link 9 so as to be swingable up and down, and near the rear end of the V-belt type continuously variable transmission 4. Shock absorber 10
The rear wheel 5 is supported by the bracket 11 of the rear frame 7 via the and is rotationally driven by the output of the power unit 2.
Thus, the scooter type motorcycle 1 can run.

The left and right rear frames 7 are located in the vicinity of 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, and the left and right rear frames are also connected. The front end of the bent tail pipe 14 is integrally fitted to the rear end of the No. 7, the box stay 15 is integrally fixed to the front cross member 12, and the rear cross member 13 and the tail pipe 14 are also fixed. , The tank stays 16 and 17 are integrally fixed.

Further, a rear portion of a helmet storage box 18 capable of storing a full-face type helmet (not shown) is extended rearward to form a substantially flat plate-like extension portion 19 , and an opening portion is formed at a bottom portion of the helmet storage box 18. The opening is pivotally attached by a maintenance lid 20 so as to be openable and closable up and down. The front lower end of the helmet storage box 18 is placed on the box stay 15 and penetrates the box stay 15 from below to above. with at the unillustrated bolts integrally attached to the box stay 15, the substantially flat-rolled
As shown in FIG. 4, the long portion 19 has a fuel tank described later.
Opening 21 that can expose the tank cap 24 of 23
And a fuel level meter protruding upward from the upper surface of the fuel tank 23.
A bulge 22 is provided which bulges upward in order to avoid the electrical signal extraction cord of 25.

Further, as shown in FIG. 3, tank stays 27 are provided on the left and right rear frames 7 rearward of the rear cross member 13, and are shown in FIGS. 3 and 5. Further, the flange 26 formed on the outer periphery of the upper portion of the fuel tank 23 is brought into contact with the tank stay 16 of the rear cross member 13, the tank stay 17 of the tail pipe 14, and the 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 7 by bolts (not shown) which pass through the flange 26 and are screwed to the tank stays 16, 17, 27.

Further, as shown in FIG. 3, a front grab rail stay 28 is integrally formed on the left and right rear frames 7 located between the rear cross member 13 and the tank stay 27, and the tail is also provided. The rear grab rail stay 41 is integrally attached to the pipe 14 upward, and the mounting bases 30 at both ends of the grab rail 29 pass through the mounting base 30 from the upper side to the lower side as shown in FIGS. 3 and 4. The front grab rail stay 28 is integrally attached to the front grab rail stay 28 by a bolt (not shown) screwed to the front grab rail stay 28, and a nut 43 is attached to a lower portion of a bolt 42 passing through the grab rail 29 and the rear grab rail stay 41. Is attached to the tip of the left and right inward projecting support portions 31 of the grab rail 29, and a substantially flat plate-like extension portion integrated with the helmet storage box 18
The rear outer circumference of 19 is placed.

A seat pivot 32 is formed at the upper front end of the helmet storage box 18 as shown in FIGS.
The seat supporting portion 33 is formed on the entire outer peripheral edge of the upper portion of the seat 34.
The front end of the seat bottom plate 35 is pivotally attached to the seat pivotally supporting portion 32 in a vertically swingable manner, and as shown in FIG. 6, a seal 38 is integrally fitted to the lower surface outer peripheral portion of the seat bottom plate 35. ing.

When the seat 34 is tilted downward to lock a seat locking device (not shown), the helmet storage box 18 is hermetically sealed with the seat bottom plate 35 and the seal 38, and the seat 34 is surrounded by the outer peripheral portion of the seat bottom plate 35. Seat support for helmet storage box 18 via seal 38 on
It is supposed to be supported by 33.

The seat 34 is packed on the seat bottom plate 35.
It is configured by placing 36 and stretching a seat skin 37 on the upper surface thereof.

A rear body cover 40 is stretched on the lower surface of the seat support portion 33 of the helmet storage box 18, and the rear frame 7 and the outside of the helmet storage box 18 are covered with the rear body cover 40. .

Since the embodiment shown in FIGS. 1 to 8 is constructed as described above, the bar handle 39 and the grab rail are provided when the seat 34 is tilted downward and the seat locking device (not shown) is locked. The scooter type motorcycle 1 can be turned around by holding 29 and with both hands and pushing them forward and backward, and a stand (not shown) can be erected or laid down.

Further, when the seat locking device is unlocked in the locked state, the seat 34 can be opened upward centering on the seat pivot portion 32 and the seat bottom plate 35 of the helmet storage box 18, and the helmet storage box is opened. A full-face type helmet (not shown) can be inserted into 18 or the full-face type helmet can be taken out from the helmet storage box 18, and the tank cap 24 of the fuel tank 23 can be removed to refuel the fuel tank 23. Can be done. If an opening is formed instead of the raised portion 22, the remaining fuel amount of the remaining amount meter 25 can be visually checked through the opening.

Further, in the state in which the seat 34 is laid down and the seat locking device is locked, since the seal 38 is attached to the entire circumference of the seat bottom plate 35, the helmet storage box 18 is kept airtight. Therefore, even if horizontal wind and rain blows, or water that jumps up from the road surface hits the lateral lower surface of the seat 34, water can be reliably prevented from entering the helmet storage box 18.

Furthermore, since a cross member for supporting the substantially flat plate-shaped extension portion 19 is unnecessary, a bolt (not shown) screwed to the box stay 15 through the lower front portion of the helmet storage box 18 is removed. For example, the helmet storage box 18 can be removed from the rear frame 7 of the scooter type motorcycle 1, and the fuel tank 23 can be easily removed and replaced without being disturbed by the member for supporting the substantially flat plate-shaped extension 19. Can be carried out.

Moreover, 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 by simply opening the maintenance lid 20 without removing the helmet storage box 18. Maintenance and maintenance of the intake system and auxiliaries (not shown) above can be performed easily.

[0029] The abbreviation of the rear of the helmet storage box 18
Due to so as to support the plate-like extension 19 to the inwardly projecting support portion 31 of the grab rail 29, is omitted a special stay or the like for supporting the substantially flat extension 19, to reduce the number of parts, The cost can be reduced.

Furthermore, the front lower end of the helmet storage box 18 and the left and right outer edges of the substantially flat plate-like extension 19 are connected to the box stick.
Since the 15 and the left and right inward protruding support portions 31 of the grab rail 29 supported at three points, the helmet storage box 18 and the substantially flat plate
The extended portion 19 can be stably held.

[0031] Furthermore covering the upper portion of the fuel tank 23 in a substantially flat plate-like extension 19 rearward of the helmet box 18, also the substantially flat extension 19 covered with a seat bottom plate 35, moreover in the overlapping unit side Since the grab rail 29 is arranged and the lower part of the overlapping portion is covered with the rear vehicle body cover 40, the upper portion of the fuel tank 23 can be reliably shielded and the appearance can be improved.

The mounting base portion 30 of the grab rail 29 and the inward protruding support portion 31 may be formed as shown in FIG.

[Brief description of drawings]

FIG. 1 is a side view of a scooter type motorcycle, which is a small vehicle equipped with 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 side view of the rear portion of the scooter type motorcycle cut through the center of the scooter type motorcycle in the vehicle width direction.

FIG. 4 is a plan view showing a state in which a seat is removed in FIG.

FIG. 5 is a helmet storage box and a schematic diagram in FIG.
It is a top view in the state where the flat extension part was removed.

6 is an enlarged sectional view of a main part cut along the line IV-IV in FIG.

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.

[Explanation of symbols]

1 ... Scooter type motorcycle, 2 ... Power unit, 3 ...
Air-cooled internal combustion engine, 4 ... V-belt type continuously variable transmission, 5 ... Rear wheel, 6 ... Hanger, 7 ... Rear frame, 8 ... Bracket, 9 ... Link, 10 ... Shock absorber, 11 ... Bracket, 12,
13 ... Cross member, 14 ... Tail pipe, 15 ... Box stay, 16, 17 ... Tank stay, 18 ... Helmet storage box, 19 ... Substantially flat extension , 20 ... Maintenance lid, 21
… Aperture, 22… Protrusion, 23… Fuel tank, 24… Tank cap, 25… Remaining meter, 26… Flange, 27… Tank stay, 28… Front grab rail stay, 29… Grab rail,
30 ... Attachment base part, 31 ... Inward protruding support part, 32 ... Seat pivot part, 33 ... Seat support part, 34 ... Seat, 35 ... Seat bottom plate,
36 ... filling, 37 ... seat skin, 38 ... seal, 39 ... bar handle, 40 ... rear body cover, 41 ... rear grab rail stay, 42 ... bolt, 43 ... nut.

─────────────────────────────────────────────────── ─── Continuation of the front page (56) Reference JP-A-5-50959 (JP, A) JP-A-5-278658 (JP, A) JP-A-5-58366 (JP, A) JP-A-5- 42888 (JP, A) Actual development 1-62180 (JP, U) Actual development Sho 63-54594 (JP, U) (58) Fields investigated (Int.Cl. ⁷ , DB name) B62J 9 / 00,35 / 00 B62J 1/18-1/28 B62J 1/12

Claims (3)

(57) [Claims] 1. In a small-sized vehicle having a storage box arranged below the seat, the left and right frames of the rear body of the small-sized vehicle are inclined upward from the lower part of the vehicle body from the center part of the vehicle body to the rear part of the vehicle body. A grab rail that bypasses the rear portion of the seat and rises upward is integrally attached to the rear portion, and extends substantially rearward from the storage portion of the storage box.
A flat plate-shaped extension portion is formed, the sheet is supported over the storage portion of the storage box and the substantially flat plate-shaped extension portion, and the rear portion of the sheet is provided via the substantially flat plate-shaped extension portion of the storage box. The tank is supported by the right and left inward protruding support portions of the grab rail, and the tank is disposed below the substantially flat plate-shaped extension portion of the storage box. The substantially flat plate-shaped extension portion is located above the tank cap. A seat support structure for a small vehicle, characterized in that an opening is formed in the seat. 2. The seat supporting structure for a small vehicle according to claim 1, wherein the storage box stores a helmet. 3. The seat supporting structure for a small vehicle according to claim 1, wherein a lower end of a front portion of the storage box is supported by a cross member that connects the left and right frames to each other.