摘要:
A brake caliper is provided with a timing and retraction controller, a brake pad and a lock-connection comprising an engaging component and a locking component. The timing and retraction controller adjusts brake timing, eliminates parasitic brake losses and dampens out-of-plane vibration between the brake pad and rotor. The brake caliper includes a housing disposed over a brake rotor; first and second opposing brake pads extendably and retractably mounted on opposite sides of the caliper housing, brake pistons that extend and retract the brake pads into and out of frictional engagement with the rotor, and brake pad timing and retraction controllers disposed on opposite sides of the caliper housing. Each controller includes a Belleville spring or other resilient member with a short compression travel limited to between about 1.50 mm and 0.025 mm. The short stroke Belleville spring of each controller applies a hold-off force against the extension force of the brake pistons that slightly delays brake pad extension and slightly reduces brake pad clamping force against the rotor, thereby advantageously providing a front wheel braking bias when applied to the rear wheels of a vehicle. The restorative force applied by the short stroke Belleville forcefully and uniformly retracts the brake pad from the rotor, eliminating parasitic brake losses, and dampening out-of-plane vibration between the brake pad and rotor.
摘要:
A brake assembly (10) for use on vehicles includes a rotor (14) having connection tabs (36) and a hub (12) having bobbins (24), integrally formed or separate, with the rotor connection tabs (36) being positioned between the hub bobbins and clamped together with a top plate (64). An ABS tone ring (40) is fastened to the hub and is circumscribed by the rotor (14). Alternatively, an ABS tone ring (40) can be formed as part of the top plate (64). A spring clip (50) can be used with the top plate to accommodate thermal expansion of the rotor (14) and eliminate rotor rattling. Torque is transfened from the brake rotor to the hub (12) in a common plane to prevent twisting in the fastener connection.
摘要:
The floating brake drum and hub assembly includes a brake drum (12) having a braking surface and an attachment flange (16); a hub (18) having an outer diameter and a brake drum mounting flange (22) for mounting to the attachment flange of the brake drum; and means for coupling (24, 26) the attachment flange of the brake drum to the brake drum mounting flange of the hub, the means for coupling structured and arranged to allow radial thermal expansion and contraction of at least a portion of the attachment flange of the brake drum and/or at least a portion of the brake drum mounting flange of the hub.
摘要:
A disc brake assembly includes a rotor (12) with an ABS tone ring insert (26) assembly that functions as a rotation indicator in an anti-lock braking system. The insert is positioned in the hat (18) of a rotor disc in a spaced relationship and is mounted to the mounting flange (20) of the rotor disc. Forming the ring insert separately from the rotor disc also allows different coating materials to be used on the tone ring that may be more heat resistant. The ring insert assembly can be made of powder metal or made as a cast iron cylinder with a toothed cap made of powder metal having a corrosion resistant coating. Cost savings can be realized along with high performance when only a portion of the assembly if made of powder metal and coated.
摘要:
A system, apparatus and method for machining (110) a rotor by determining a center plane (126) of the rotor based on two surfaces of the rotor (101, 105), preferably two interior surfaces (101, 105); positioning the rotor (106) based on the determined center plane (126); and then machining the positioned rotor (106). The center plane of the rotor is determined using at least one image of the rotor (116). In some preferred embodiments, the center plane can be determined based on a measure of parallelism of two braking surfaces of the rotor or of two (106), non-braking surfaces of the rotor (101, 105). Before and/or after the rotor is machined, it can also be inspected.
摘要:
A floating disc brake assembly having a disc brake rotor secured to a mounting assembly, such as a hat or a hat with a retention ring structured and arranged to fit within retention ring flanges of a plurality of rotor mounting tabs uniformly distributed about the mounting assembly. A method of uniformly transferring braking forces from a rotor of a brake assembly about a wheel hat component of the brake assembly and a kit of parts are also provided.