JPH05221202A - Rear wheel hub of motorcycle - Google Patents

Abstract

(57) [Summary] [Purpose] The rear wheel hub can be replaced by changing the entire rear wheel to the left and right to change the front and rear of the tire block pattern, and a rear wheel hub for a motorcycle that does not require replacement from the tire rim is obtained. thing. [Structure] A shaft hole 2 portion through which an axle 6 of a rear wheel hub 1 is passed is formed symmetrically so that the hub 1 can be passed through the axle 6 by changing the left and right directions. The driven sprocket 11 on both sides and the mounting surface 12 of the brake disc 10 are formed symmetrically.
1 and the brake disc 10 can be tightened by swapping the left and right.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a rear wheel hub of a motorcycle.

[0002]

2. Description of the Related Art Some motorcycles are called motocross type and are mainly used off-road. In this type of motorcycle, as shown in FIG. 3, the front wheel A and the rear wheel B have a large number of block patterns C of rectangular protrusions.
The tire D provided with is attached to improve the grip of the road surface on a bad road. In particular, as shown in FIG. 2, the block pattern C of the tire D of the rear wheel B that moves the vehicle forward by scratching the road surface with the driving force of the engine is severely worn on the front side in the rotational direction of the block pattern C. Therefore, the rear wheel B is appropriately removed, the right and left of the tire D are replaced, and the block pattern C
Rotate the front and rear of the
The front and back are worn out.

[0003]

When a tire is attached to or detached from a rim, a tire lever is used, but a strong force is required, and the tube may be caught in the tire or a hole may be bored in the tube. , The replacement work is troublesome, and there are many users who are not good at replacement.

In view of the above point, the present invention has a rear wheel of a motorcycle in which the front and rear of the tire block pattern can be interchanged by exchanging the entire rear wheel to the left and right and the tire rim does not have to be interchanged. Aim to get a hub.

[0005]

In order to achieve the above object, a rear wheel hub of a motorcycle according to the present invention has a shaft hole portion through which an axle of the hub of the rear wheel passes, which is formed symmetrically so that the hub can be left and right. Can be passed through the axle by changing the orientation, and the mounting surfaces of the driven sprocket and brake disc on both sides of the hub are formed symmetrically so that the driven sprocket and brake disc can be swapped left and right for tightening. I have done so.

[0006]

The rim is attached to the hub of the rear wheel through the spokes, and the tire is fitted on the rim. The hub is rotatably attached to the rear fork on the axle, the brake disc of the disc brake is attached to the right side of the hub, the driven sprocket is attached to the left side of the hub, and the chain is connected to the drive sprocket of the engine.

When the hub is removed from the rear fork after pulling out the axle, the mounting surfaces of the driven sprocket and the brake disc on both sides of the hub are formed symmetrically. , The driven sprocket and the brake disc can be left-right swapped and tightened. Further, since the shaft holes of the hub are symmetrical, the hubs can be interchanged and mounted on the rear forks through the axle. As a result, the block pattern of the tires on the rear wheels can be changed back and forth.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to FIG. The hub 1 is cast from a light alloy or the like. The spacer 3, the bearing 4 and the oil seal 5 are attached to the shaft hole 2, the shaft 6 is rotatably supported through the shaft 6, and the spacers 7 are inserted on both sides of the shaft 6. Attach both ends of 6 to the rear forks. The shaft hole 2 is formed so that the left and right sides are symmetrical, and the left and right sides can be interchanged and inserted into the axle 6. The hub 1 has a rim attached to the outside via spokes 8, and a tire is fitted to the rim. A brake disc 10 of a disc brake 9 is fastened to the right side of the hub 1, and a driven sprocket 11 is fastened to the left side of the hub 1, and is connected to a drive sprocket of the engine by a chain. Then, the mounting surface 12 of the driven sprocket 11 and the mounting surface 12 of the brake disc 10 on both sides of the hub 1 are formed symmetrically.

The hub 1 can be mounted by removing it from the axle 6, removing the driven sprocket 11 and the brake disc 10, and replacing the left and right. Further, since the hub 1 can be inserted into the axle 6 by replacing the left and right sides, it is the same as replacing the left and right tires.

[0010]

As described above, since the present invention is configured as described above, the brake discs 10 and the driven sprockets 11 mounted on both side surfaces of the hub 1 can be mounted by left-right swapping, and the hub 1 can also be swapped left-right. Can be attached to the axle 6. This makes it possible to replace the tires in the same state as when they are mounted on the rim by replacing them with each other, which makes the reassembling work easier than replacing the tires and does not damage the tube.

[Brief description of drawings]

FIG. 1 is a vertical sectional view showing an embodiment of the present invention.

FIG. 2 is a side view showing wear of a tire block pattern.

FIG. 3 is a side view showing an example of a motorcycle using a block pattern tire.

[Explanation of symbols]

 1 hub 2 shaft hole 6 axle 10 brake disc 11 driven sprocket 12 mounting surface

Claims (1)

[Claims] 1. A rear wheel hub having an axial hole portion through which an axle is passed is formed symmetrically so that the hub can be passed through the axle by changing the left and right directions, and both side surfaces of the hub are driven. Rear wheel hub for motorcycles, characterized in that the mounting surfaces of the sprocket and brake disc are formed symmetrically so that the driven sprocket and brake disc can be swapped between left and right for tightening.