JPS6260318B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a frame structure for a motorcycle or the like that is split into front and rear parts and is detachable.

The applicant previously proposed a motorcycle that is split into the front and rear and is removable. In such motorcycles, it would be convenient if the maintenance work around the rear frame and the air cleaner, rear suspension, etc. under it could be done without removing the rear frame from the front frame. It would be easier to work if it could be held in place, and it would be convenient if it could be reassembled with the least amount of work.

The present invention has been made in view of the above, and an object of the present invention is to enable one of the frames to be rotated using one of the connecting parts of the front and rear frames as a fulcrum, and to maintain this state by a locking means. It is an object of the present invention to provide a frame structure for a motorcycle that can significantly improve workability and reassembly workability.

Next, a preferred embodiment of the present invention will be described in detail with reference to the accompanying drawings.

FIG. 1 shows a side view of the motorcycle 1, FIG. 2 shows the motorcycle 1 in the divided state, and FIG. 3 shows the motorcycle 1 in the rear rotation holding state.

A head tube 3 is provided at the front end of the front frame 2, and a front fork 4 supporting the front wheel 5 is attached to the head tube 3.
A steering handle 7 is provided on the top bridge 6. The front frame 2 includes a main frame 2a extending rearward from the upper part of the head tube 3, a down tube 2b hanging rearward from the lower part, a down tube blower 2c extending rearward from the lower end of the main frame 2a, It consists of a center tube 2d that is tilted forward and upward from its rear end, and the upper end of the center tube 2d is joined to the rear end of the main frame 2a, and the down tube blower 2
c. The left and right center tubes 2d are provided in parallel.

A fuel tank 8 is mounted on the main frame 2a, and an engine 9 is mounted below the main frame 2a surrounded by a down tube 2b, a lower tube 2c, and a center tube 2d. A bracket 10 is fixed to the rear lower part of the front frame 2, and a rear wheel 13 is attached to the bracket 10.
A rear fork 12 is supported at its rear end by a pivot 11, and an upper bracket 1 is mounted rearwardly at the rear end of the main frame 2a above the center tube 2d.
4 is provided protrudingly, and a rear action unit 16 is interposed between this and a progressive mechanism 15 provided on the rear fork 12. A lower bracket 17 is provided at the upper rear of the rear fork bracket 10 and at the lower rear of the center tube 2d.

18 indicates a rear frame; the rear frame 18
The rear stay 19 has a substantially horizontal V-shape on the side, and is composed of a rear stay 19 constituting a substantially horizontal seat rail, and a sub-stay 20 whose upper end is joined to the rear part of the rear stay 19 and which extends diagonally forward and downward. A pair of rear stays 20 and sub-stays 20 are provided with left and right symmetrical shapes, and the left and right rear stays 19, 19 are connected by a cross member 19b, on which a seat 21 is mounted, a rear fender 22 is mounted on the rear end, and a rear fender 22 is mounted on the side. A side cover 23 is attached and supported. An air cleaner 24 is mounted and supported under the seat 21, facing a carburetor 25 provided behind the cylinders of the engine 9, and connected in communication when the front and rear frames 2, 18 are connected.

The rear frame 18 described above constitutes an assembled body A as shown in FIG.
4, the front end attachment part 20a of the substay 20 is removably connected to the lower bracket 17 with bolts and nuts, etc., respectively, to obtain a motorcycle as shown in FIG. 1, and the divided state is shown in FIG. Ta. In addition, 26 in the drawing indicates an exhaust pipe mounted and supported on the front frame 2, and 26
A pillow 7 is attached and supported by the rear frame 18, and is connected when the frames are combined.

In the above, the upper and lower mounting portions 19a and 20a of the rear frame 18 face the outer surfaces of the upper and lower brackets 14 and 17 of the front frame 2, and are fastened a and b with bolts and nuts, etc. By removing the lower binding part b and loosening the lower binding part b, the rear frame 18 rotates about this part b as a fulcrum so that the rear part is lifted up and the front part is lowered. In this case, it is necessary to remove the seat 21, and an example of an attachment/detachment support device for this is shown in FIGS. 4 to 6.

A cross member 19b is provided at the intermediate portion of the rear stays 19, 19 of the rear frame 18, and a support plate 28 that bulges upward is horizontally suspended between the rear portions. On the other hand, mounting holes 21b, 21b are provided on the rear left and right sides of the bottom plate 21a of the seat 21, and nuts 30, 30 are attached thereto, and hooks 31, 31 are provided on the front left and right sides of the bottom plate 21a. Hook 31, 31
is engaged with the locking pieces 29, 29, and the support plate 28
Align the mounting holes 21b, 21b at the rear of the seat bottom plate with the mounting holes 28a, 28a provided on both sides of the top surface, pass the bolts from below, and screw them into the nuts 30, 30.
The seat 21 can be removed by mounting and supporting the seat 21 on the rear stay 19, removing bolts, and pulling the seat 21 rearward.

A locking hole 32 is formed in the center of the support plate 28, and as described above, the rear frame 18 is rotated about the lower binding part b as a fulcrum to lift it up with the seat removed, and the support plate 28 is locked. Hole 3
One end of the wire 33 is passed through the handle 7 and locked by a hook 34 or the like, and the other end of the wire 34 is tied to the handle 7. As a result, the rear part can be maintained in a lifted state, as shown in FIG. The lower part of the reaction unit 16 can be adjusted, cleaned, etc., and maintenance work can be performed.

As described above, according to the present invention, maintenance work can be performed without removing the front and rear frames, which is advantageous in terms of maintenance.In addition, since the upper binding part is removed and the lower binding part is rotated as a fulcrum, the work is easy. Easy and quick to assemble, easy to reassemble,
It has many advantages such as being able to be done quickly.

Although a motorcycle is shown in the embodiment, the present invention can also be applied to a three-wheeled motorcycle that employs a frame with a similar structure.

[Brief explanation of the drawing]

Figure 1 is a side view of the motorcycle, Figure 2 is a diagram of the same divided state, Figure 3 is a diagram of the rotation holding state, Figure 4 is a plan view of the rear frame, and Figure 5 is a main part of the seat broken. The side view, FIG. 6, is a bottom view of the seat. In addition, 2 and 18 in the drawing are frames, 14, 17, and 1.
9a and 19b are connecting portions, b is a rotation fulcrum, and 33 is a locking means.

Claims (1)

[Claims] 1. In a motorcycle, etc. equipped with a frame that can be divided through a plurality of removable joints, at least one of the split frames is configured to be rotatable about the joint, and when one frame is rotated, A frame structure for a motorcycle or the like, characterized in that the rotating state of one frame is maintained at a desired position through a locking means for locking the frame to the other frame.