JPS6238869Y2 - - Google Patents

Description

[Detailed Description of the Invention] This invention relates to an attachment structure for a cargo platform provided at the rear of a vehicle body such as a two-wheeled vehicle or a three-wheeled vehicle, that is, a rear carrier, to the vehicle body.

As shown in FIG. 1, the conventional mounting structure for a rear carrier on a two-wheeled vehicle or three-wheeled vehicle involves raising the rear part of a vehicle body frame 1, and attaching an upper front end 2a and a lower front end 2b of the rear carrier 2 to the raised portion 1a.
It was fixed to a bracket 3 fixed to the upper end of the body frame 1 with bolts 4 and 5. The fuel tank 6 has a mating flange portion 6.
The rear edge of the rear carrier 2 was overlapped with the upper front end 2a of the rear carrier 2 and attached to the upper end of the raised portion 1a. Further, although not shown in the drawings, instead of raising the vehicle body frame 1, a stay for attaching an upper part of the rear carrier is fixed to the vehicle body frame 1, and the rear carrier is similarly attached. In addition,
7 indicates a sheet. However, in the above-mentioned conventional mounting structure, the space available below the seat for installing auxiliary equipment is limited by the presence of the raised portion 1a of the vehicle body frame 1 or the alternative upper rear carrier mounting stay. It will be narrowed down. In addition, if the raised part is abolished and the mating flange part 6a of the fuel tank 6 is fixed directly to the upper front end 2a of the rear carrier instead of being fixed to the raised part 1a, the thickness of the mating flange part 6a will be increased to ensure its strength. , Therefore, the wall thickness of the fuel tank 6 becomes thicker.
This results in increased weight and cost.

This idea was made in view of the above circumstances,
A rear carrier mounting structure that expands the usable space at the rear of the vehicle, improves the placement of auxiliary equipment under the seat and ease of maintenance, and allows the fuel tank to be formed with a thinner wall, reducing weight and cost. The purpose is to obtain.

An embodiment of the present invention will be described below with reference to the drawings.

FIG. 2 shows a side view of the main parts of the rear body of a scooter type two-wheeled vehicle.A fuel tank 11, an oil tank 12, a rear carrier 13, and a seat 14 are attached to a rear body frame 10.

As shown in cross section in FIG. 6, the vehicle body frame 10 has a box-like shape made up of two concavely formed steel plates joined together, and the joining part 10a is welded. This rear body frame 10 is welded and fixed to the rear end of a down tube 10b, which is a body frame extending rearward from the front part of the vehicle body.

As shown in FIGS. 3 to 5, the fuel tank 11 is formed by welding a main body portion 11a and an upper surface portion 11b together at a flange portion 11c. A reinforcing plate 15 is welded and fixed to the back side. This reinforcing plate 15 is attached to the fuel tank 11 in order to provide strength.
The peripheral edge that contacts the main body is bent (the bent part is shown as 15a), and a bolt 16 passes upwardly and is fixed by welding, and has an oil tank holding part 15b extending rearward. A fitting hole 15c into which the convex portion 12a of the oil tank 12 is fitted is formed. Also, in the center of the front part of the fuel tank 11, there is a bolt 1 pointing upward.
A seat hinge member 19 is attached to the bracket 18, and the seat 14 is hingedly connected to the seat hinge member 19. 14a indicates its hinge axis. Further, a tank mounting member 20 having two tank mounting brackets 20a and 20b integrally fixed to the lower part of the fuel tank 11 is welded, and the front tank mounting bracket 20a is fixed to the vehicle body frame 1 with bolts 21, and the rear The side tank mounting bracket 20b is fixed to the vehicle body frame 10 via a connecting rod 22 as described later. Also,
The front upper part of the rear body cover 23 is the fuel tank 1
1 with bolts 24.

The rear carrier 13 includes a cargo platform frame portion 13a,
An upper stay 13b that integrally extends this loading platform frame portion 13a forward, a lower stay 13d that is integrated with the rear grip portion 13c, and reinforcement provided diagonally between the rear of the loading platform frame portion 13a and the lower stay 13d. and the upper stay 13b.
The flattened front end of the fuel tank 11 is fixed by tightening with a nut 25 to a bolt 16 fixed to a reinforcing plate 15 at the rear edge of the mating flange 11c of the fuel tank 11.

To explain the attachment part of the front end of the lower stay 13a of the rear carrier 13 to the vehicle body frame 10, as shown in FIG. On the side end surface, the flattened front end of the lower stay 13d of the rear carrier 13 and the tank mounting bracket 20b of the fuel tank 11 are fixed together by bolts 26, and the connecting rod 2
A lower stay 13d, a tank mounting bracket 20b, and a pivot portion 27a at the upper end of the rear wheel suspension 27 are fitted onto the other side of the rear wheel suspension 27, and are fastened together with a nut 28.

Further, the oil tank 12 is connected to the vehicle body frame 1.
0, and the convex portion 1 of the oil tank 12
2a is fitted into the fitting hole 15c of the reinforcing plate 15 and stably supported. 12b is an oil tank cap.

Although not shown, the power unit, which integrates an engine and a power transmission device, is connected to a bracket 29 fixed to the lower end of the vehicle body frame 10 so as to be able to swing vertically. The rear wheel is pivotally supported on the unit.
In addition, the lower end of the suspension 27 is connected.

In addition, turn signals 3 are installed on the left and right lower stays 13b.
0 is attached, and the rear end of the vehicle body frame 10 has an upwardly rising portion 10c that also serves as an oil tank support plate, and a protruding portion 10d at the rear of this rising portion.
A bracket 31 is fixed to the vehicle with bolts 32, and a tail light 33 and a license plate 34 are attached to this bracket 31. Also, 35
is a body cover that covers the vehicle body frame and partitions the engine side and the upper part of the vehicle body.

In the above-mentioned rear carrier mounting structure, the upper stay 13b of the rear carrier 13 is attached to the fuel tank 11, and the fuel tank 11 itself serves as a carrier support member. Raised part 1
(a) Alternatively, a stay for attaching the upper part of the rear carrier is not required, and the space between the fuel tank 11 and the rear carrier 13 becomes wider accordingly. Therefore,
As the storage part of the oil tank 12 as in the embodiment,
Alternatively, this space can be used effectively as a storage section for a tool case.

Moreover, the fuel tank 11 of the upper stay 13b
Since the attachment to the mating flange part 11c is done using the reinforcing plate 15 that is integrally provided over the rear edge of the mating flange part 11c, it is only necessary to select the thickness and size of the reinforcing plate 15, and the plate thickness of the mating flange part 11c has sufficient strength even if it is thin, and if the peripheral edge of the reinforcing plate 15 that contacts the main body of the fuel tank 11 is bent,
The reinforcing plate can also be made thinner. Therefore, sufficient strength can be obtained even if the wall thickness of the fuel tank 11 itself is made thin.

In addition, in the embodiment, the reinforcing plate 15 has a fitting hole 15c.
Since the oil tank holder 15b is provided with an oil tank holding portion 15b having a holder portion 15b, and the convex portion 12a of the oil tank 12 is fitted into the fitting hole 15c to support the oil tank 12, it is not necessary to separately provide a stopper member for the oil tank 12. This reduces the number of parts.

In addition, the lower stay 13d of the rear carrier 13
, attach the upper end of the suspension 27 to the body frame 1.
Since the fuel tank 11 is connected to the vehicle body frame 10 together with the tank mounting bracket 20b of the fuel tank 11 using the connecting rod 22 for connecting to the vehicle body frame 10, there is no need to provide a separate bracket on the vehicle body frame 10, and the structure is also improved in this respect. has been simplified and the number of parts has been reduced.

As explained above, according to the present invention, a reinforcing plate is integrally provided at the rear edge of the mating flange of the fuel tank fixed to the upper part of the vehicle body frame, overlapping the mating flange, and this reinforcing plate is attached to the upper part of the rear carrier. Since the stays are connected and the lower stay of the rear carrier is connected to the vehicle body frame, the usable space between the fuel tank and the rear carrier is expanded.
It can be used as a storage space for oil tanks, tool cases, etc., and also facilitates the arrangement and maintenance of auxiliary equipment below the seat. Furthermore, since the strength for supporting the rear carrier can be obtained even if the mating flange portion is made thinner, the fuel tank itself can be made thinner to reduce weight and cost.

[Brief explanation of the drawing]

Fig. 1 is a side view of a conventional rear carrier mounting structure, Fig. 2 and the following show an embodiment of the present invention, Fig. 2 is a side view of the vicinity of the rear carrier of a scooter type two-wheeled vehicle, and Fig. 3 is the same plane. Fig. 4 is a plan view of the main part of the fuel tank, Fig. 5 is a side view of the main part, and Fig. 6 is a plan view of the main part of the fuel tank.
The figure is a sectional view of the main part taken along the line - in FIG. 2. 10...Vehicle frame, 11...Fuel tank,
11c...Matching flange portion, 12...Oil tank, 12a...Protrusion, 13...Rear carrier,
13a...Cargo platform frame part, 13b...Upper stay, 1
3c...Rear grip part, 13d...Lower stay, 13e...Reinforcement member, 15...Reinforcement plate, 15
a...Bending part, 15b...Oil tank holding part, 15c...Fitting hole, 16...Bolt, 20...
...Tank mounting member, 20a, 20b...Tank mounting bracket, 22...Connecting rod, 27...Suspension.

Claims (1)

[Scope of utility model registration request] A fuel tank having a mating flange portion is fixed to the upper part of the vehicle body frame, and a reinforcing plate is stacked and integrally provided on the rear edge of the mating flange portion of the fuel tank,
A rear carrier mounting structure characterized in that an upper stay of the rear carrier is coupled to the reinforcing plate, and a lower stay of the rear carrier is coupled to the vehicle body frame.