JPH08207865A - Disk brake mounting structure for scooter type vehicle - Google Patents

Abstract

PURPOSE: To compactly arrange a disk brake for facilitating attaching and detaching workability of the rear wheel in a scooter type vehicle. CONSTITUTION: In a disk brake mounting structure of a scooter type vehicle in which a crank case 2 surrounding a power transmitting means for transmitting the rotation of an engine to a rear wheel 1 having a hub 5 and rotatably holding the rear wheel at the rear end part is provided, a disk 3 for disk brakes is locked to the crank case side end face of the hub 5, and a brake caliper 11 for braking the disk for disk brakes is provided on the rear end part of the crank case.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a scooter type vehicle, and more particularly to a scooter type vehicle having a rear wheel braking disc brake.

[0002]

2. Description of the Related Art Conventionally, automobiles (including two wheels and four wheels)
So-called drum brakes and disc brakes are known as such braking devices. Since the disc brake is superior in heat dissipation to the drum brake, so-called fade phenomenon hardly occurs and stable braking force can be obtained. Therefore, it is desired to use the disc brake as a braking device for a rear wheel of a scooter type vehicle. However, since the suspension device for suspending the rear wheel on the vehicle body and the power transmission means including the transmission are densely arranged near the rear wheel of the scooter type vehicle, the disc brake is provided near the rear wheel. Especially when it is arranged, it is desired that the disc brake is arranged more compactly.

[0003]

In view of the above points, an object of the present invention is to provide a disc brake for a scooter type vehicle in which the disc brake for the rear wheel is compactly arranged and the rear wheel can be easily attached and detached. To provide a mounting structure.

[0004]

DISCLOSURE OF THE INVENTION A disc brake mounting structure for a scooter type vehicle according to the present invention encloses a power transmission means for transmitting engine rotation to a rear wheel having a hub, and at the rear end portion of the rear wheel. A scooter type vehicle having a crankcase rotatably supported, wherein a disc brake disc is fixed to a crankcase side end surface of the hub,
A brake caliper for braking the disc brake disc is provided at the rear end of the crankcase.

In this structure, since the brake caliper is arranged on the crankcase side, the rear wheel can be removed or attached in the direction away from the crankcase.

[0006]

Embodiments of the present invention will be described below with reference to the accompanying drawings. FIG. 1 shows a scooter type vehicle according to the present invention. The rear wheel 1 of the scooter type vehicle according to the present invention shown in FIG. 1 is rotatably carried by a rear end portion of a crankcase 2 extending rearward of the vehicle body. Crankcase 2
Extends while surrounding a power transmission means (not shown) for transmitting the engine rotation to the rear wheel 1. The power transmission means includes a pulley, a V belt and a transmission. At the rear end of the crankcase 2, a braking means 4 for braking the rotation of the disc brake disc 3 is carried.

FIG. 2 shows a cross section taken along the line AA of FIG. As is apparent from FIG. 2, the hub portion 5 of the rear wheel 1 is spline-coupled to the rear axle 7 which is rotatably supported by the crankcase 2 via the bearing 6, and the outer peripheral portion of the hub portion 5 is rotated by the rear wheel. It has a width in the axial direction. The disc brake disc 3 is attached to the end face on the crankcase side of the outer peripheral portion.
Is fixed, and the spoke portion 8 of the rear wheel 1 is fixed to the opposite end surface. The spokes 8 are formed as plate-shaped spokes made of, for example, a press-formed steel plate. It is preferable that the spoke portions 8 are formed in a plate shape in this manner, because the spoke portions 8 and the hub portion 5 can be easily coupled with each other by bolts or nuts.

Further, as shown in FIG. 2, the spoke portion 8
Is protruding from the center of the width of the rim portion 10 of the rear wheel 1 to the side opposite to the crankcase 2 in the direction of the rear wheel rotation axis, and is defined by the hub portion 5, the spoke portion 8 and the rim portion 10. In the space on the second side, the caliper portion 11 of the braking means 4 is arranged straddling the disc brake disc 3. In this way, the caliper portion 11 is arranged in the space and the space between the hub portion 5 and the rim portion 10 of the rear wheel 1 is utilized to the maximum extent, whereby the braking means 4 is made compact in the vicinity of the rear wheel 1. It is preferable because it can be arranged.

The attachment / detachment work and the adjustment work of the braking means 4 can be easily performed by dividing the rear wheel 1 from the hub portion 5 and shifting or removing the rear wheel 1 to the side opposite to the crankcase 2. If importance is attached to workability of these works, it is desirable that the rear axle 7 is supported by the crankcase 2 in a cantilever shape. The braking means 4 for braking the rotation of the disc brake disc 3 is, for example, a braking device of a type in which the disc brake disc 3 is narrowed by the action of hydraulic pressure in the thickness direction to perform braking, and its configuration is well known. Therefore, it is omitted.

By the way, in the above-mentioned embodiment, the rear end of the crankcase 2 has the suspension S on its upper surface.
The braking means 4 is supported by the rear end of the crankcase 2 behind the suspension S. It is preferable that the braking means 4 is provided behind the suspension S in this way, even when the suspension S is operating, especially when the suspension S is contracted, the braking means 4 and the suspension S do not interfere with each other. Although FIG. 2 and FIG. 3 show how the braking means 4 is carried on the rear end portion via the bracket 9, the braking means 4 is directly carried on the rear end portion without the bracket 9. It may be done.

[0011]

As described above, in the disc brake mounting structure of the scooter type vehicle of the present invention, since the brake caliper is provided on the crankcase side, there is no obstacle on the opposite side, and the rear wheels can be attached and detached. Work can be performed easily. Further, since the brake caliper is provided in the crankcase having high rigidity, the mounting rigidity of the brake caliper can be sufficiently secured.

[Brief description of drawings]

FIG. 1 is a side view of a scooter type vehicle according to the present invention.

FIG. 2 is a cross-sectional view of a rear wheel portion showing an AA cross section in FIG.

FIG. 3 is a side view showing a mounted state of the brake caliper according to the present invention.

[Explanation of symbols for main parts]

 1 Rear Wheel 2 Crankcase 3 Disk for Disc Brake 4 Braking Device 5 Hub 9 Bracket 11 Caliper

Claims (1)

[Claims] 1. A scooter type vehicle comprising a crankcase which surrounds a power transmission means for transmitting engine rotation to a rear wheel having a hub and which rotatably carries the rear wheel at a rear end thereof. A disc brake for a scooter type vehicle, wherein a brake disc is fixed to an end surface of the hub on the crankcase side, and a brake caliper for braking the disc brake disc is provided at a rear end portion of the crankcase. Mounting structure.