Monoblock Brake Caliper Having Crossover Reinforcement Elements
Provided is, among other things, a disc brake caliper that includes: a unitary main housing, a leading reinforcement element and a trailing reinforcement element. The unitary main housing is made of a first material and includes: (a) an inner portion, (b) an outer portion, (c) a leading crossover section that extends between the inner portion and the outer portion, forward of both the inner opening and the outer opening, and over the brake rotor when in use, and (d) a trailing crossover section that extends between the inner portion and the outer portion, behind both the inner opening and the outer opening, and over the brake rotor when in use.
1 . A disc brake caliper, comprising:
a unitary main housing made of a first material and including: (a) an inner portion that is adjacent to an inner side of a brake rotor when in use and includes an inner opening for receiving an inner brake pad, (b) an outer portion that is adjacent to an outer side of a brake rotor when in use and includes an outer opening for receiving an outer brake pad, (c) a leading crossover section that extends between the inner portion and the outer portion, forward of both the inner opening and the outer opening, and over the brake rotor when in use, and (d) a trailing crossover section that extends between the inner portion and the outer portion, behind both the inner opening and the outer opening, and over the brake rotor when in use;
a leading reinforcement element extending between the inner portion and the outer portion through the leading crossover section; and
a trailing reinforcement element extending between the inner portion and the outer portion through the trailing crossover section,
each said leading and trailing reinforcement element having a Young's modulus that is at least twice that of the first material.
2 . A disc brake caliper according to claim 1 , further comprising:
a second leading reinforcement element extending between the inner portion and the outer portion through the leading crossover section; and
a second trailing reinforcement element extending between the inner portion and the outer portion through the trailing crossover section,
each said second leading and second trailing reinforcement element having a Young's modulus that is at least twice that of the first material.
3 . A disc brake caliper according to claim 1 , wherein said reinforcement elements comprise threaded bolts.
4 . A disc brake caliper according to claim 1 , wherein the first material is comprised of aluminum and the leading and trailing reinforcement elements are comprised of steel.
5 . A disc brake caliper according to claim 1 , wherein each of the inner portion and the outer portion includes at least two hydraulic piston chambers.
6 . A disc brake caliper according to claim 1 , wherein the inner portion includes a hydraulic piston chamber, but the outer portion does not.
7 . A disc brake caliper according to claim 1 , further comprising a bridge that extends between the inner portion and the outer portion above both the inner opening and the outer opening.
8 . A disc brake caliper according to claim 1 , further comprising a brace that extends along an outer surface of at least one of the inner portion and the outer portion and that attaches to the leading reinforcement element near a leading end of the brace and attaches to the trailing reinforcement element near a trailing end of the brace.
9 . A disc brake caliper according to claim 8 , wherein the brace is configured as a truss.
10 . A disc brake caliper according to claim 9 , wherein the brace is a unitary piece.
11 . A disc brake caliper according to claim 8 , wherein the brace has a Young's modulus that is at least twice that of the first material.
12 . A disc brake caliper according to claim 8 , wherein the brace extends along the outer surface of the outer portion, the outer portion being adjacent to an outer surface of the brake rotor.
13 . A disc brake caliper according to claim 1 , wherein each of said leading reinforcement element and said trailing reinforcement element has a Young's modulus that is at least 2½ times that of the first material.
14 . A disc brake caliper according to claim 1 , further comprising a piston cavity having a horizontal centerline, and wherein at least a portion of each said leading and trailing reinforcement element is disposed at a horizontal level that is below the centerline of the piston cavity.
15 . A disc brake caliper according to claim 1 , further comprising a piston cavity having a horizontal centerline, and wherein each said leading and trailing reinforcement element is entirely disposed at a horizontal level that is below the centerline of the piston cavity.
16 . A disc brake caliper according to claim 1 , wherein said leading and trailing reinforcement elements are disposed close to outer edges of the unitary main housing.