JP2999149B2 - Tank cover mounting structure for riding four-wheeled vehicle - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a mounting structure for a cank cover of a four-wheeled vehicle mounted on a riding style.

[0002]

2. Description of the Related Art In general, a riding type four-wheeled vehicle mounts front wheels on the front left and right sides of a frame (body frame) via suspension devices (struts and the like) and swings around a pivot shaft provided at the center of the frame. The left and right rear wheels are mounted on a swing arm that is movably supported and suspended by a load-carrying cushion unit, and the steering shaft that is supported by the front of the frame and connected to the left and right front wheels is rotated by a handle. The vehicle is steered by driving the vehicle, and the vehicle is driven by driving rear wheels with an engine mounted in the center of the frame.

A fuel tank, a seat, a carrier, and the like are mounted on the upper portion of the frame from the front, and a driver straddles the seat, grasps the handle, and mounts a foot board (step) mounted on the left and right of the lower portion of the frame. Steer with your feet on. Further, covers that cover the frame, front and rear wheels, and the like are also attached to the frame. Documents disclosing this type of riding-type four-wheeled vehicle include, for example, Japanese Patent Application Laid-Open No. 1-223089.

The covers include a front fender covering a front wheel portion, a tank cover covering a fuel tank, a rear fender covering a rear wheel portion, a seat cover covering around a seat, a side cover covering left and right side portions of a frame, and the like. . In these covers, adjacent covers are appropriately integrated or conversely subdivided in consideration of productivity and assemblability.

The frame of the riding type four-wheeled vehicle is usually formed by a welding assembly such as a pipe, and generally includes left and right main upper members, left and right main lower members, and left and right main upper members. A plurality of side members connecting the lower members at a plurality of positions at predetermined intervals in the front-rear direction, a plurality of cross members connecting the left and right main upper members at a plurality of positions in the front-rear direction, and a rear extension of the left and right main upper members or The vehicle includes left and right seat rails formed by members extending rearward from the left and right main upper members, and left and right rear members extending obliquely from the middle of the rear side members toward the middle of the seat rail.

Various brackets for fixing an engine, an air cleaner, a fuel tank, a seat, a carrier, a radiator, various electric parts, and the like are fixed to the frame by welding or bolting. Further, the brackets are provided also as members (cross members or the like) constituting the frame in consideration of productivity or the like, or integrally form brackets for attaching a plurality of different components. Things have been done.

[0007]

However, in the conventional tank cover mounting structure of a riding type four-wheeled vehicle,
When the front fender and the tank cover are integrated, in order to remove the fuel tank to perform engine maintenance, a large front fender having a tank cover portion must be removed,
Maintenance work may be complicated.

On the other hand, if the front fender and the tank cover are separate parts, the fuel tank must be mounted after the fuel tank is mounted during engine maintenance. In addition, misalignment between the fuel gauge of the fuel tank, etc. and each opening formed in the tank cover to see through them is likely to occur, and in order to absorb this misalignment, make each opening larger than necessary. Must be done and the appearance may be impaired.

The present invention has been made in view of such technical problems, and an object of the present invention is to make it possible to simultaneously remove a fuel tank by removing a tank cover attaching means. A mountable four-wheeled vehicle tank that facilitates the attachment and detachment of the cover, improves the maintainability of the part including the area around the engine, reduces the number of parts in the mounting part, and reduces the displacement between the fuel tank and the tank cover. It is to provide a cover mounting structure.

[0010]

SUMMARY OF THE INVENTION In order to achieve the above object, a tank cover mounting structure for a riding type four-wheeled vehicle according to the present invention has a plurality of cross members arranged at predetermined positions in the front-rear direction. In a riding type four-wheeled vehicle having an upper member, a front cross member and a rear cross member are used as a front bracket and a rear bracket, respectively, and the front and rear of a fuel tank are attached to these brackets, and the fuel tank is covered. The front and rear of a tank cover having substantially the same shape as the fuel tank are attached to the front bracket and the rear bracket common to the fuel tank, and the attachment of the fuel tank and the tank cover to the front bracket is performed by attaching the fuel tank to the front bracket. A tank mounting boss is provided on the front, and a front mounting hole is provided at the front of the tank cover. A tank fitting hole and a female screw are provided on the front bracket, a rubber damper is fitted to the tank mounting boss, the rubber damper is pushed into the tank fitting hole and fitted, and the tank cover is formed. The front mounting hole is fastened to the female screw of the front bracket with a bolt, and the mounting of the fuel tank and the tank cover to the rear bracket is provided with a female screw on the rear bracket, A mounting bracket is provided at the rear and a mounting portion is provided at the rear of the tank cover, and the mounting bracket and the mounting portion are jointly fastened to the same position of the rear bracket by bolting to the female screw of the rear bracket. The fuel tank can be removed at the same time by removing the tank cover mounting means And wherein the door.

[0011]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a left side view of a four-wheeled vehicle equipped with a tank cover mounting structure to which the present invention is applied,
FIG. 2 is a plan view of the riding type four-wheeled vehicle of FIG. 1 and 2, an engine 11 is mounted at a central portion of a frame (body frame) 10 made of a pipe welded structure, and left and right front wheels 1 serving as steering wheels are provided on both front sides of the frame 10.
2 and 12 are suspended, and right and left rear wheels 13 and 13 driven by an engine 11 are suspended at a rear portion of the frame 10.

A steering shaft 14 extending substantially vertically is supported at the front of the frame 10, and a bar handle 15 is fixed to an upper end of the steering shaft 14. A tie rod (not shown) leading to the front wheels 12, 12 is connected. The left and right front wheels 12 are independently suspended on both sides of the front portion of the frame 10.

The left and right rear wheels 13, 13 are suspended by a swing arm 16 and a load carrying cushion unit 17, and are driven by the engine 11 via a transmission mechanism (not shown) such as a drive shaft or a drive chain. This transmission mechanism is connected to a differential gear (not shown) that drives the left and right rear wheels 13, 13.

A front carrier 18, a fuel tank 19, a seat 20, and a rear carrier 21 are attached to an upper portion of the frame 10 from the front, and footboards (steps) 22 are attached to both lower portions of the frame 10. Further, covers made of molded products such as plastics, such as a front fender 23, a tank cover 24, a rear fender 25, and a side cover 26, are detachably attached to the frame 10. The driver
Straddle the seat 20, put your feet on the foot board 22,
The driver operates while gripping the bar handle 15 (specifically, the grip portion thereof).

FIG. 3 is a perspective view of the frame 10 in FIG. In FIG. 3, the frame 10 includes left and right main upper members 31, 31 extending in the front-rear direction, left and right main lower members 32, 32 extending in the front-rear direction, and a main upper member 31 and a main lower member 32 on the left and right sides, respectively. A plurality of side members 33, 34, 35 connecting the
A plurality of cross members 36, 37 connecting the left and right main upper members 31, 31 at a plurality of positions in the front-rear direction;
38, 39, 40, 41, and a plurality of cross members 42, 43, 44, 45 connecting the left and right main lower members 32, 32 at a plurality of positions in the front-rear direction.

The frame 10 also serves as a cross member 46 for connecting the left and right front side members 33 and 33, a cross member 47 for connecting the left and right rear side members 35 and 35, and a cross member. The steering support member 48, the rear end member 49 connecting the rear ends of the left and right main upper members 31, 31 and the rear left and right side members 35,
Main upper members 31, 31 in the middle of 35 and left and right
Left and right rear members 50, 50 for connecting the rear extension portion (seat rail portion) of the vehicle.

In FIG. 3, detachable sub-frame members 75 are provided on the left and right of the approximate center of the frame 10.
75 are connected. This subframe member 7
5 and 75 make it easy to mount and remove the engine 11 even when the engine 11 is large,
This is for reducing the weight of the vehicle. In the illustrated example, an engine mounting bracket 76 is provided on each of the sub-frame members 75, 75. Each sub-frame member 75 is bolted at its upper end to a bracket 77 provided on the main upper member 31 and at its lower end to a bracket 78 provided below the rearmost side member 35. ing.

The frame 10 shown in FIG. 3 has an engine guard 51 coupled between the central portions of the left and right main lower members 32, 32, and a pair of front and rear fixed outside the left and right main lower members 32, 32. Step members 52, 52, and left and right side members 3 at the rear end
Left and right pivot bearings 53, 53 of the swing arm 16 provided at the lower portion of the swing arm 16.

FIG. 4 is an exploded perspective view showing one embodiment of a tank cover mounting structure to which the present invention is applied. In FIG. 4, an oil inlet 55 and an oil meter 56 are provided on the upper surface of the fuel tank 19, and a pair of left and right tank mounting bosses 57, 57 are provided on the front surface of the fuel tank 19. A pair of left and right mounting brackets 5 on the rear
8, 58 are provided.

An opening 59 for exposing the lubrication port 55 to the outside is provided in the tank cover 24 covering the fuel tank 19.
And an opening 60 for looking into the oil amount meter 56, and left and right front mounting holes 61, 61 are formed. Further, a pair of left and right bracket-shaped mounting portions 62, 62 are integrally formed at a rear portion of the tank cover 24. In addition, a tank cap 63 is attached to the lubrication port 55, and a breather pipe 64 is attached to the tank cap 63.

FIG. 5 shows the fuel tank 19 and the tank cover 2.
4 is a vertical sectional view showing a rear mounting structure, FIG. 6 is a vertical sectional view showing a front mounting structure of a fuel tank 19, and FIG. 7 is a vertical cross sectional view showing a front mounting structure of a tank cover 24. . The rear part of the fuel tank 19 and the rear part of the tank cover 24 are fastened together with the cross member 39 as shown in FIGS. Also,
The front part of the fuel tank 19 and the front part of the tank cover 24 are fastened to a common cross member 38 as shown in FIGS.

In FIGS. 4 and 5, the cross member 39 is provided with two internal threads (welding nuts in the illustrated example) at the left and right, and the mounting brackets 58, 58 and the tank cover of the fuel tank 19 are provided. 24 are provided with common mounting bolts 6.
6, 66, which are detachably fastened to the female screws 65, 65. In the illustrated example, both the left and right mounting portions have a grommet-shaped rubber damper 67 fitted in the mounting hole of the mounting bracket 58 of the fuel tank 19 and a distance collar 68 penetrating the mounting hole of the rubber damper 67 and the tank cover 24. Is used to support vibration isolation.

4 and 6, a pair of left and right tank fitting holes 69, 69 are formed in the cross member 38, and rubber bosses 57, 57 are attached to the left and right bosses 57, 57 at the front mounting portion of the fuel tank 19. The dampers 70, 70 are fitted and mounted, and the rubber dampers 70, 70 are pushed into the tank fitting holes 69, 69 to be fitted, so that vibration damping is supported. The cross member 39 includes
As shown in FIG. 4, a seat guide 73 for holding a front support bracket (not shown) of the seat 20 is provided.

In FIGS. 4 and 7, female screws (welding nuts in the illustrated example) 71, 71 are provided at the upper part of the cross member 38 at two places on the right and left sides. 61, the female screws 71, 71 are attached by the mounting bolts 72, 72.
It is detachably fastened to. In the present embodiment, as shown in FIG.
1 and 71 are fastened together with the rear mounting portion of the front fender 23 by common bolts 72 and 72. The tank cover 24 and the fuel tank 19 are made of a plastic molded product.
4 is formed in substantially the same shape as the fuel tank 19, as shown in FIG.

According to the tank cover mounting structure of FIGS. 4 to 7 described above, a plurality of cross members 36, 37, 38, 39, 40, 4 arranged at predetermined positions in the front-rear direction.
In a riding type four-wheeled vehicle having left and right upper members 31, 31 joined by
The fuel tank 19 is attached to these brackets using the front and rear cross members 39 as a front bracket and a rear bracket, respectively.
The tank cover 24 for covering the fuel tank 19 is provided with common mounting means 65, 66, etc., or the same bracket 38 as the fuel tank 19.
A tank cover mounting structure for a riding type four-wheeled vehicle configured to be mounted on the front bracket 38 and the rear bracket 39 via the mounting means 69 and 71 formed therein is obtained.

In the embodiment of FIGS. 4 to 7, a plurality of cross members 36, 37, 3
In a riding type four-wheeled vehicle having left and right upper members 31, 31 joined by 8, 39, 40, 41, the front cross member 38 and the rear cross member 39 are used as a front bracket and a rear bracket, respectively. Left and right tank mounting means 69, 69 for mounting the front part of the fuel tank 19 to the front bracket 38, and left and right cover mounting means 71, 71 for mounting the front part of the tank cover 24 covering the fuel tank 19. And a rear bracket 39 is provided on the rear part 5 of the fuel tank 19.
8 and 58 and the right and left side fastening means 65 and 6 for fastening the rear portions 62 and 62 of the cank cover 24 together.
A tank cover mounting structure provided with 5, 66, 66 is provided.

According to the embodiment described above, the front cross member 38 and the rear cross member 39 in the area where the fuel tank 19 is mounted are used as the front bracket and the rear bracket, respectively, and the front mounting portion of the fuel tank 19 is used. The front mounting portion of the tank cover 24 is provided in the common bracket 38, and the rear mounting portion of the fuel tank 19 and the rear mounting portion of the tank cover 24 are fastened to the same position of the common bracket 39. Therefore, by easily attaching and detaching the fuel tank 19 and the tank cover 24, the maintainability of the engine 11 is improved, and the relative positions of the fuel tank 19 and the tank cover 24 are accurately set, so that it is easy to assemble.

The fuel tank 19 and the tank cover 2
Also, the number of parts of the mounting portion 4 can be reduced. Further, since the above-described positioning can be easily and accurately performed, the gap between the lubrication port 55 and the opening 59 and the gap between the oil amount meter (fuel gauge) 56 and the opening 60 are reduced to improve the appearance. The gap between the outer shape of the fuel tank 19 and the inner surface of the tank cover 24 is reduced to reduce the fuel tank 1
9 can be secured sufficiently. The maintenance of the engine 11 includes operations such as adjustment of a carburetor, inspection and replacement of a spark plug, and adjustment of a control cable.

[0029]

As is apparent from the above description, according to the tank cover mounting structure for a riding type four-wheeled vehicle of the present invention,
In a riding type four-wheeled vehicle having left and right upper members joined by a plurality of cross members arranged at predetermined positions in the front-rear direction, a front cross member and a rear cross member are used as a front bracket and a rear bracket, respectively. The front and rear of the fuel tank are attached to these brackets, and the front and rear of a tank cover that covers the fuel tank and has substantially the same shape as the fuel tank are attached to the front bracket and the rear bracket common to the fuel tank. For mounting the fuel tank and the tank cover to the front bracket, a tank mounting boss is provided on a front surface of the fuel tank, a front mounting hole is formed at a front portion of the tank cover, and the tank is fitted to the front bracket. A hole and a female screw are provided, and a rubber damper is fitted and mounted on the tank mounting boss. A rubber damper is pushed into the tank fitting hole and fitted, and the front mounting hole of the tank cover is fastened to the female screw of the front bracket with a bolt. For mounting to the bracket, female screws are provided on the rear bracket, a mounting bracket is provided at the rear of the fuel tank, and a mounting portion is provided at the rear of the tank cover, and the mounting bracket and the mounting portion are connected to the female screw of the rear bracket. The bolts are fastened together at the same position on the rear bracket, and the fuel tank can be removed at the same time by removing the tank cover mounting means. Since it can be removed at the same time, the fuel tank and In addition to facilitating the maintenance of parts including the area around the engine by easily attaching and detaching the tank cover, the structure of the mounting part of the fuel tank and the tank cover is simplified and the processing is simplified, and the number of parts is reduced. And a tank cover mounting structure for a riding type four-wheeled vehicle capable of reducing the displacement between the fuel tank and the tank cover.

[Brief description of the drawings]

FIG. 1 is a left side view of a four-wheeled vehicle equipped with a tank cover mounting structure to which the present invention is applied.

FIG. 2 is a plan view of the riding type four-wheeled vehicle of FIG. 1;

FIG. 3 is a perspective view of a frame in FIG. 1;

FIG. 4 is an exploded perspective view showing one embodiment of a tank cover mounting structure to which the present invention is applied.

FIG. 5 is a longitudinal sectional view showing a rear mounting structure of a fuel tank and a tank cover.

FIG. 6 is a vertical sectional view showing a front mounting structure of a fuel tank.

FIG. 7 is a longitudinal sectional view showing a front mounting structure of the tank cover.

[Explanation of symbols]

 10 frame 11 engine 12 front wheel 13 rear wheel 15 handle 16 swing arm 19 fuel tank 20 seat 23 front fender 24 tank cover 31 main upper member 32 main lower member 33 side member 34 side member 35 side member 38 front cross member (bracket) 39 Rear cross member (bracket) 55 Lubrication port 56 Oil level meter 57 Boss (for front mounting) 58 Mounting bracket 59 Opening (lubrication port) 60 Opening (oil level meter) 61 Mounting hole 65 Female screw (for rear mounting) 66 Bolt (for joint fastening) 67 Rubber damper 69 Tank fitting hole (for front mounting) 70 Rubber damper 71 Female screw (for front mounting)

──────────────────────────────────────────────────続 き Continuation of the front page (56) References JP-A-5-319342 (JP, A) JP-A-62-218295 (JP, A) JP-A-7-285479 (JP, A) 135887 (JP, A) JP-A-61-75080 (JP, A) JP-A-64-44292 (JP, U) JP-B 5-7234 (JP, B2) (58) Fields investigated (Int. ⁷ , DB name) B62J 35/00 B62K 5/00 B62K 11/00-11/14 B62K 19/40

Claims (1)

(57) [Claims] 1. A riding type four-wheel vehicle having left and right upper members joined by a plurality of cross members arranged at predetermined positions in the front-rear direction, wherein a front cross member and a rear cross member are respectively connected to a front bracket and a front bracket. The front and rear of the fuel tank are attached to these brackets by using as a rear bracket, and the front and rear of a tank cover which covers the fuel tank and has a shape substantially the same as the fuel tank are shared by the front bracket and the rear. Mounting the fuel tank and the tank cover to the front bracket by providing a tank mounting boss on a front surface of the fuel tank, forming a front mounting hole in a front portion of the tank cover, The bracket is provided with a tank fitting hole and female screw, and the tank mounting boss is provided with a rubber damper. The rubber damper is fitted and fitted, and the rubber damper is pushed into the tank fitting hole and fitted, and the front mounting hole of the tank cover is fastened to the female screw of the front bracket with a bolt. Attachment of the tank cover to the rear bracket is provided with a female screw on the rear bracket,
A mounting bracket is provided at a rear portion of the fuel tank and a mounting portion is provided at a rear portion of the tank cover, and the mounting bracket and the mounting portion are bolted to the female screw of the rear bracket to be at the same position on the rear bracket. A tank cover mounting structure for a riding type four-wheeled vehicle, wherein the fuel tank is detached at the same time when the tank cover attaching means is removed.