JPS6244875Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a vehicle body structure for a motorcycle or the like that is equipped with a front and rear split body frame and allows the seat position to be adjusted up and down.

The applicant previously proposed a motorcycle in which the body frame can be divided into front and rear parts. By the way, the seat height of motorcycles is set based on the average physique.
Therefore, it cannot be said that the optimal riding position is necessarily set for each occupant, and it is desirable to adjust the seat height depending on the physique of the occupant. On the other hand, when driving off-road, it is preferable that the feet touch the ground depending on the road surface conditions, and it is desirable to be able to adjust the height of the seat depending on the driving conditions.

The present invention has been devised in view of the above, and its purpose is to provide a plurality of joining positions for the joining part between the rear frame with the seat and the front frame, and to increase the height of the rear frame in the vertical direction by selecting the joining position. To provide a vehicle body structure for a motorcycle or the like, in which the height of the seat can be adjusted and the height of the seat can be adjusted.

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, and FIG. 2 shows a state in which the front and rear frames are divided.

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.
The front end of the rear fork 12 that supports the main frame 2a at its rear end is supported by a pivot 11, and an upper bracket 1 is attached rearwardly to 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 horizontal V-shape on its side, and consists 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 obliquely 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 at the rear end. A side cover 23 is attached and supported on the side, and an air cleaner 24 is attached and supported on the lower side of the seat, and as shown in FIG. carburetor 26 on the engine 9 side
Connect with.

The rear frame 18 described above constitutes an assembled body A as shown in FIG. The front ends of the substays 20 are 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. An exhaust pipe is provided on the front frame side, and 28 is a muffler provided on the rear frame side, and these are connected in communication when the front and rear frames are connected.

In the above description, the upper and lower brackets of the front frame 2 are configured as shown in FIG. 3, and FIG. 3 shows only the frame to represent the brackets. The upper bracket 14 has a substantially triangular plate-like side surface, for example, an inverted concave end surface, and pivotally supports the upper end of the above-mentioned reaction unit 16 through a pin 29 between the intermediate portions of the side portions 14a. In this embodiment, three mounting holes a, b, and c are provided at different heights, such as at the rear, upper front, and lower front of the side portion 14a, and the mounting holes are concentrically located on the left and right side portions 14a. established in

On the other hand, the lower bracket 17 is constituted by, for example, a substantially semicircular plate having a vertical length, and is provided on the left and right center tubes 2d.
Three mounting holes d, e, and f are provided in the middle and lower portions, and the mounting holes are provided concentrically in each of the left and right brackets 17.

Mounting parts 19a and 20a are formed at the front ends of the left and right rear stays 19 and sub-stays 20 of the rear frame 18 by crushing pipes or joining thick plates, and one mounting hole g, h is formed concentrically in each of the mounting parts 19a and 20a. will be established.

In the above, the mounting holes g and h of the upper and lower stays 19 and 20 of the rear frame 18 are connected to the bracket 14,
17, the rear frame 18 becomes higher, and the mounting holes g,
The intermediate height can be reduced by aligning h with mounting holes a and e, and further reducing the intermediate height by aligning and coupling mounting holes g and h with mounting holes c and f. In this way, the height of the rear frame 18 can be selected by selecting the coupling position, that is, the height of the seat 21 can be adjusted.

FIG. 4 shows a modified embodiment, in which the rear frame 11
A plurality of mounting holes a', b', c' and d', e', f' are provided in the mounting parts 119a and 120a at the front ends of the rear stay 119 and sub-stay 120 of No. The same adjustment can be made by using one mounting hole each for the upper and lower brackets of the frame and selecting the position of the mounting hole on the rear frame side.

FIG. 5 shows a further modified embodiment, in which the upper and lower brackets 214 provided on the front frame 202,
At 217, one mounting hole a is provided in the upper bracket 214, and mounting holes d, e, and f are provided in the lower bracket 217 around the mounting hole a, and the upper mounting portion provided on the rear stay of the rear frame is connected to the mounting hole a. Then, using this as a fulcrum, the lower mounting portion of the sub-stay is swung to select mounting holes d, e, and f. This allows the rear frame to move up and down, allowing you to adjust the seat height as well.

In the above embodiments, a motorcycle is shown, but the present invention can also be applied to a three-wheeled motorcycle or the like that adopts a similar frame structure.

As is clear from the above, according to the present invention, the height of the seat can be adjusted by selecting the mounting position and coupling position of the rear frame with respect to the front frame, and the optimal riding position according to the physique of the occupant can be achieved. It has many advantages, such as being able to obtain a riding position suitable for driving conditions such as off-road driving, and being able to achieve the above with a simple configuration such as providing a plurality of mounting holes.

[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 side view of the front frame, and Figure 4 is a side view of the motorcycle.
FIG. 5 is a diagram of a modified embodiment. In the drawings, 2 is the front frame, 18 is the rear frame, 14, 17, 19a, 20a are the joints, and a to
h is a bonding position, and 21 is a sheet.

Claims (1)

[Scope of utility model registration request] In a separable motorcycle or the like in which a rear frame supporting a seat and a front frame are integrated via a removable joint, the joining position of the joint between the front frame and the rear frame is determined between the frames. A vehicle body structure for a motorcycle or the like, characterized in that a plurality of body structures are provided so as to be adjustable in the vertical direction.