Drum brake device and method of assembly
AssigneeAutokinetics, Inc.
InventorJ. Bruce Emmons
Life of this patent
Estimating the term…
Abstract
An illustrative example drum brake device includes a drum having an inner, braking surface. At least one brake shoe includes a friction lining and a support structure for the friction lining. The support structure includes a window having a first portion that is wider than a second portion. A shoe mount is configured to be received through the first portion of the window and engage the support structure adjacent the second portion of the window in a manner that resists movement of the brake shoe in two dimensions and allows selective movement of the brake shoe in a third dimension for allowing the friction lining to selectively engage the braking surface.
Claims18
A method of assembling a drum brake device including at least one brake shoe having a friction lining on a support structure that moves with the friction lining during a brake application, a shoe mount, a brake actuating cylinder, and a drum having a braking surface inside the drum, the method comprising:
- positioning a portion of the support structure near the brake actuating cylinder;
- manipulating the support structure
- to cause a window through the support structure to receive a portion of the shoe mount and
- to place the support structure in a first position relative to the shoe mount wherein the support structure is removable from the shoe mount;
- moving the support structure relative to the shoe mount
- to couple the portion of the support structure with the brake actuating cylinder and
- to place the support structure in a second position relative to the shoe mount wherein the support structure is not removable from the shoe mount and the support structure is engaged by the shoe mount in a manner that the shoe mount restricts movement of the brake shoe in two dimensions and allows selective movement in a third dimension;
- and
- placing the drum into an installed position over the brake shoe with the braking surface facing the friction lining, wherein the support structure is prevented from moving from the second position into the first position when the drum is in the installed position.
A drum brake device, comprising:
- at least one brake shoe including a friction lining and a support structure that moves with the friction lining during a brake application, the support structure including a window having a first portion and a second portion, the first portion of the window being wider than the second portion;
- and
- a shoe mount including a portion that is configured to be received through and removable from the first portion of the window when the support structure is in a first position relative to the shoe mount, the portion of the shoe mount engages the support structure adjacent the second portion of the window in a manner that resists movement of the brake shoe in two dimensions and allows selective movement of the brake shoe in a third dimension for allowing the friction lining to selectively engage the braking surface when the support structure is in a second position relative to the shoe mount, wherein the support structure is not removable from the shoe mount while the support structure is in the second position.
Dependencies are inferred from the claim text.