JPS6260317B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a parts assembly structure for a split frame type motorcycle or the like.

The applicant previously proposed a motorcycle in which the front and rear frames can be separated.

In such motorcycles, when the frame is divided into front and rear parts and removed, it is necessary to connect and separate parts that span the front and rear frames, such as the exhaust system and fuel supply system, each time the frame is attached or removed. It is necessary to connect and separate parts easily and quickly when attaching and detaching the frame.

The present invention has been made in view of the above, and its purpose is to make the connecting portions of the parts face the dividing plane of the plurality of frames, so that the parts can be easily connected and separated.
It is an object of the present invention to provide a structure for assembling parts of a motorcycle, etc., which can be assembled quickly and improves workability and maintainability of assembling.

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

FIG. 1 is a side view of the motorcycle 1, FIG. 2 is a diagram showing the motorcycle 1 in a divided state, and FIG. 3 is a diagram showing the motorcycle 1 during attachment and detachment.

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 front end of a rear fork 12, which supports a rear wheel 13 at the rear end, is pivoted to the bracket 10.
1, and an upper bracket 14 is mounted rearwardly at the rear end of the main frame 2a above the center tube 2d.
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 19 and sub-stays 20 are provided with left-right symmetrical shapes, and the left and right rear stays 19, 19 are connected by a cross member (not shown), on which a seat 21 is mounted, and a rear fender 22 is mounted on the rear end. A side cover 23 is attached and supported on the side. 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 mounting portion 20a of the substay 20 was removably connected to the lower bracket 17 with bolts and nuts, respectively, to obtain a motorcycle as shown in FIG. 1, and the divided state is shown in FIG.

In the above description, the fuel supply device composed of the carburetor 25 and the air cleaner 24 is mounted and supported astride the front and rear frames, and the exhaust device composed of the exhaust pipe 27 and the muffler 28 is also mounted and supported astride the front and rear frames. Therefore, the carburetor 25 and the air cleaner 24 are mounted and supported separately on the front and rear frames, and the exhaust pipe 2
The muffler 7 is supported by the front frame 2 because it is led out from the engine 9, and the muffler 28 is supported by the rear frame 18 because the exhaust pipe of the exhaust system is long.

The connecting and separating portions of the exhaust system and fuel supply system are made to face the dividing surface of the frames 2 and 18. The upstream part 25 of the carburetor 25 is located in front of the air cleaner 24.
A connecting pipe 26 is provided which is detachably connected to the connecting pipe 26, the front end of which faces the dividing surface, and the rear end of the upstream section 25a of the carburetor 25 faces the dividing surface. The dividing plane is N-N
It is constructed near the line connecting the upper and lower joints a and b shown in . On the other hand, the connecting portion 27a at the downstream end of the exhaust pipe 27 faces near the dividing surface, and the connecting portion 29a at the upstream end of the joint pipe 29 provided at the front of the muffler 28 faces near the dividing surface.

The frames are combined as shown in Figure 3, frames 2 and 1.
8 to the lower bracket 17 and the mounting portion 20a, and using this b as a fulcrum, raise the rear frame 18 and connect the respective connecting portions 26, 25a, 27.
a, 29a faces the dividing surface, and the upper bracket 14
Attach the attachment portion 19a to the. Then, the connecting portions 26, 25a, 27a, and 29a facing the dividing plane are connected. When dividing, perform the procedure in reverse.

In this way, the connection and separation of components that span two or more frames can be easily and quickly done because they are located on the dividing surface. There is no need to add a support bracket, which would be expected if a connection or separation part is provided at a distant location, the number of support and attachment parts is minimized, assembly work and division work are facilitated, and maintenance is also excellent.

The present invention has many advantages as described above.

In the embodiment, a motorcycle is shown, but the invention can also be applied to a three-wheeled motor vehicle having a similar structure, and although the frame is divided into two, the invention can also be applied when the frame is divided into two or more parts.

[Brief explanation of the drawing]

FIG. 1 is a side view of the motorcycle, FIG. 2 is a diagram of the same divided state, and FIG. 3 is a diagram of the motorcycle in the intermediate state. In the drawings, numerals 2 and 18 are frames, and NN is a dividing plane.

Claims (1)

[Claims] 1 A divided frame that can be divided into a plurality of frame parts via a detachable joint, and a connecting part of a component that spans at least two of the plurality of frame parts on the dividing surface of the frame part. A structure for assembling parts of a motorcycle, etc.