Drum brake device
AssigneeNisshinbo Industries, Inc.
InventorsSeiji Asai, Takashi Ikeda
Life of this patent
Estimating the term…
Abstract
A drum brake device having a brake lever with sufficient rigidity, and securing a larger space at a central region of a brake in order to provide a long, effective brake lever stroke. A by-pass hole 60d, through which the shoe-hold pin 41 swingably rising from the back plate penetrates, is formed in the brake lever 60 positioned beneath the shoe web 20b of the brake shoe 20, and the bending sections 60e, 60f, 60g are integrally formed toward the back plate 10 at the outermost circumferential edge portion of the brake lever 60 surrounding the by-pass hole 60d.
Claims7
A drum brake device comprising a brake shoe being movably disposed parallel to a surface on a fixed back plate, a brake lever superposed on a shoe web of the brake shoe, positioned between the back plate and the shoe web, but adjacent to the shoe web, a base end of which is pivotally supported at one end of the shoe web, a shoe-hold mechanism, composed of a shoe-hold pin, rising from the back plate, and a shoe-hold spring, laid on the brake shoe, said shoe-hold pin contracting said shoe-hold spring so as to urge the brake shoe toward the back plate and to hold the brake shoe, and a remote control device which pulls a free end of said brake lever to cause a frictional engagement between the brake shoe and a brake drum, wherein a by-pass hole is formed in said brake lever through which said shoe-hold pin penetrates and a bending section extending toward the back plate is integrally formed at an outermost circumferential edge of said brake lever surrounding the by-pass hole.
A drum brake device comprising a brake shoe being movably disposed parallel to a surface on a fixed back plate, a brake lever superposed on a shoe web of the brake shoe, positioned between the back plate and the shoe web, but adjacent to the shoe web, a base end of which is pivotally supported at one end of the shoe web, a shoe-hold mechanism, composed of a shoe-hold pin, rising from the back plate, and a shoe-hold spring, laid on the brake shoe, said shoe-hold pin contracting said shoe-hold spring so as to urge the brake shoe toward the back plate and to hold the brake shoe, and a remote control device which pulls a free end of said brake lever to cause a frictional engagement between the brake shoe and a brake drum, wherein a tube section, through which said shoe-hold pin penetrates, is integrally formed in said brake lever toward the back plate.
Dependencies are inferred from the claim text.