JPH0420819B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a disc brake cover.

As is well known, in some motorcycles, a caliper is installed via a bracket on the front fork that supports the axle of the front wheel, and a friction pad built into the caliper brakes a disc that rotates together with the axle. By the way, in this type of disc brake, pebbles, mud, etc. may fly in from the front while the vehicle is running, and these may become stuck between the caliper and the disc or damage the braking surface of the disc. As a countermeasure against this problem, it is sufficient to cover the braking surface of the disc with a cover.
There are methods such as (see Figure 4).

With this item, a hole is made in the center of the cover body and the axle is passed through and fastened to the fork together with the wheel hub, so if you do not hold the holes in the fork, wheel hub, and cover body in alignment, the axle There is a problem in that it cannot be passed through, making assembly work difficult. Further, the brake hose that supplies brake fluid to the caliper swings relative to the caliper as the fork moves up and down. However, if the connection part between the brake hose and the caliper is swung, the connection part will be damaged, so the part of the brake hose near the caliper must be fixed to the fork. special preparations had to be made.

This invention was made against the background of this situation, and it covers the braking surface of the disc with an arc-shaped cover body, sufficiently protects the disc brake from stones, mud, etc., and simplifies the work of assembling the cover.
Another object of the present invention is to provide a disc brake cover that facilitates the fixing of a brake hose to a fork.

To achieve the above object, the present invention provides a disc brake in which a disc that rotates integrally with a wheel pivotally supported by a fork is covered with a cover, and the disc is braked by a caliper supported by the fork, in which a cover body that covers the disc is provided. is formed into an arc shape, and the outer covering portion of the cover body is fixed to the fork from the outer surface direction with screws, and further,
The present invention is characterized in that a protrusion that rises from the upper part of the cover body along the fork is fixed to the fork together with a brake hose that supplies brake hydraulic fluid by one attachment member.

Hereinafter, an embodiment in which the present invention is applied to a motorcycle will be described in detail based on the accompanying drawings.

A front fork 1 of a motorcycle is provided on the front side of a vehicle body so as to be turnable by a handle 2.
An axle 3 is fixed by a nut 4 to an axle mounting portion 1a that is integrally formed and protrudes toward the front side of the lower end of the front fork 1, and a front wheel 5 is rotatably supported on this axle 3. A disk 7 is fixed to the hub 6 of the front wheel 5 with a fixing bolt 8, and rotates together with the front wheel 5.

Further, a brake mounting portion 1b is formed protruding from the rear side of the lower end of the front fork 1, and a bracket 9 of the disc brake A is attached to this brake mounting portion 1b.
are fixed by tightening bolts 10, 10.
A caliper 11 is supported on this bracket 9 by support bolts 12, 12. Calipa 11
The piston straddles the disc 7 from the outer periphery and is equipped with a piston (not shown) that pushes the friction pads arranged on both sides of the disc 7. It is designed to brake by sliding into contact.

On the front side of the lower end of the front fork 1, cover mounting parts 1c, 1c are formed vertically to sandwich the axle 3, and a disc brake cover B is attached to the cover mounting parts 1c, 1c for disc braking on the front side of the front fork 1. It is attached so as to cover the upper side of the caliper 11 from the surface 7a.

This disc brake cover B is integrally formed of synthetic resin as shown in FIG. It consists of a fork fitting part 15 that fits together and a protrusion part 16 that comes into pressure contact with the outer periphery of the front fork 1.

The cover body 14 has a U-shaped cross section, and has an inner cover portion 14a and an outer cover portion 14b that cover both sides of the brake surface 7a of the disc, and mounting holes are provided at both ends of the outer cover portion 14b. 14c, 14c are provided. The upper end 14d of the cover body 14 extends to cover the disc brake A from above to prevent pebbles, mud, etc. from entering. Further, the protrusion 16 rises from the upper part of the cover body 14 along the front fork 1 and is bent to correspond to the outer periphery of the front fork 1. A band attachment part 16a is integrally formed on the outer periphery of the protrusion 16 to fix the brake hose 13 thereto.

When assembling the disc brake cover B, the cover body 14 is attached to the braking surface 7a of the disc 7 from the front of the vehicle body.
The front fork 1 is mounted by straddling the front fork 1 from the outer periphery, covering both sides, and fitting the fork fitting part 15 to the front fork 1. And mounting holes 14 at both ends of the outer covering part 14b
c, 14c from the outer side of the car body, screws 17, 1
7 and is screwed and fixed to the cover mounting portions 1c, 1c of the front fork 1, and the speedometer 18 and the like do not become an obstacle to assembly, making the work easy. and the center part 1 of the fork fitting part 15
9 is bent inward, and the protruding portion 16 is attached to the front fork 1 so as to press against the outer periphery from the inside thereof. The protrusion 16 is connected to the brake hose 1 by a band 20 which is a mounting member on the front fork 1.
3 and is fixed.

Next, the operation of this embodiment will be explained.

As described above, the disc brake cover B is installed from the front of the vehicle body so that the cover body 14 covers both sides of the braking surface 7a of the disc 7, and is positioned above and below the axle 3 at the lower end of the front fork 1. The cover mounting parts 1c, 1c can be easily and reliably assembled by screwing screws from the direction of the outer surface of the vehicle body.

The cover body 14 of the disc brake cover B covers the disc braking surface 7a on the front side of the front fork 1 and the upper part of the disc brake A, so that pebbles, mud, etc. are prevented from moving toward the disc brake A from the front or above while driving. Even if you jump in, the braking surface 7a of the disc 7 will not be damaged, and the inside of the disc brake A will not be clogged with mud.

Also, while driving, hydraulic fluid is supplied to the disc brake A and the pads are brought into sliding contact with the disc 7 to achieve braking. 1
Since it hits the braking surface 7a of the rear disc 7 and easily enters the inside of the disc brake A, it has excellent heat dissipation properties for braking heat.

Further, since the disc brake cover B is arc-shaped and covers only the front disc braking surface 7a of the front fork 1 and the upper part of the disc brake A, it is lightweight and manufacturing costs can be reduced.

The cover main body 14 of the disc brake cover B has an inner cover part 14a shorter than the outer cover part 14b and has a U-shaped cross section, but the invention is not limited to this. They may have the same length and have an L-shaped cross section so that only the outer covering portion 14b is provided.

Further, the protrusion 16 may be fixed with a bolt or the like instead of the band 20 described above.
Further, this disc brake cover B can be applied to a vehicle equipped with a disc brake on the rear wheel.

As mentioned above, this invention covers the disk that rotates integrally with the wheel pivotally supported by the fork with a cover,
In this disc brake that brakes with a caliper that supports the disc on a fork, a cover body that covers the disc is formed in an arc shape, an outer covering part of the cover body is fixed to the fork from the outer surface direction with screws, and further, A protrusion that rises from the top of the cover body along the fork,
The present invention is characterized in that it is fixed to the fork together with a brake hose that supplies brake hydraulic fluid by one mounting member. Therefore, since the cover body is attached to cover the disc braking surface of the disc brake, there is a risk that pebbles, mud, etc. may fly in from the front while the vehicle is running and get stuck between the caliper and the disc and damage the disc braking surface. There is no. Further, since the outer covering portion of the cover body is fixed to the fork from the outer surface direction with screws, screws and tools can be inserted from the lateral direction of the conveyor on the assembly conveyor, making it easy to assemble the cover.
Then, the protrusion that rises from the top of the cover body along the fork was attached and fixed to the fork together with the brake hose using one mounting member.
Even if the front fork moves up and down, the connection between the brake hose and caliper does not swing and this connection will not be damaged. Furthermore, since the attachment of the protruding part and the brake hose is common, there is no need to provide a special attachment member for fixing the brake hose to the fork, or a special fork boss, which simplifies the structure and facilitates the above-mentioned assembly work. This reduces work time and reduces costs.

[Brief explanation of drawings]

FIG. 1 is a front view of a motorcycle to which the invention is applied, FIG. 2 is a front view of the invention, FIG. 3 is an end view of FIG. 2, and FIG. 4 is a front view of a disc brake cover. A... Disc brake, B... Disc brake cover, 1... Front fork, 7... Disc, 11... Caliper, 13... Brake hose, 14... Cover body, 14b... Outer cover, 16... ...Protrusion, 20... Band (attachment member).

Claims (1)

[Claims] 1. In a disc brake that covers a disc rotating integrally with a wheel pivotally supported by a fork, and brakes this disc by a caliper supported by the fork, the cover main body that covers the disc is formed in an arc shape, and the cover main body has an arc shape. fixing the outer covering part to the fork from the outer surface direction with screws,
Furthermore, a disc brake cover characterized in that a protruding portion rising from the upper part of the cover body along the fork is fixed to the fork by a single attachment member together with a brake hose that supplies brake hydraulic fluid.