Positioning of a brake caliper
The present invention concerns a disc brake having a caliper encircling one or more brake discs. At least one of said brake discs is received sliding on a hub or a part connected to the hub. According to the invention the caliper is to be mounted in a lagging position. In said lagging position at least a portion of the brake pad assemblies is positioned 0°-180° behind an imaginary point vertically above the centre of a wheel axle, when seen in the normal direction of disc rotation. The invention is intended for brakes, in which the brake pads only act on a restricted part of a full circle.
1. A disc brake having a calliper receiving one or more brake pads and encircling one or more brake discs, of which at least one brake disc is received sliding on a hub or a part connected to the hub, which hub is received on a wheel axle, which one or more brake pads are parts of brake pad assemblies, characterized in that the caliper being mounted so that at least a portion of the brake pad assemblies is positioned 0-180° behind an imaginary point vertically above the centre of the wheel axle, when seen in the normal direction of disc rotation and that in a released condition of the disc brake, points of contact between the disc and the hub or the part connected to the hub are concentrated to an upper part of their interface thereby defining a rolling contact.
2. The disc brake of claim 1 , characterized in that a predominant proportion of the surface area of the brake pads are positioned behind the imaginary point.
3. The disc brake of claim 1 , characterized in that at least 50% of the surface area of the brake pads are placed in a lagging position.
4. The disc brake of claim 1 , characterized in that at least 75% of the surface area of the brake pads are placed in a lagging position.
5. The disc brake of claim 1 , characterized in that 100% of the surface area of the brake pads are placed in a lagging position.
6. The disc brake of claim 1 , characterized in that an angle (α) between a trailing edge of the brake pads, taken in the direction of disc rotation, and a vertical line going through the centre of the wheel axle and said imaginary point of the brake disc is between 0° and 180°.
7. The disc brake of claim 1 , characterized in that an angle (β) between a front edge of the brake pads, taken in the direction of disc rotation, and a vertical line going through the centre of the wheel axle and said imaginary point of the brake disc is between 0° and 180°.
8. The disc brake of claim 1 , characterized in that a maximal angle (γ) between the rotational axes of the wheel axle and the brake disc is limited by the clearance between the brake disc and adjacent brake pads.
9. The disc brake of claim 1 , characterized in that an angle (β) between a trailing edge of the brake pads, taken in the direction of disc rotation, and a vertical line going through the centre of the wheel axle and said imaginary point of the brake disc is between 0° and 90°.
10. The disc brake of claim 1 , characterized in that an angle (β) between a front edge of the brake pads, taken in the direction of disc rotation, and a vertical line going through the centre of the wheel axle and said imaginary point of the brake disc is between 90° and 180°.