JPS6228932U - - Google Patents

Description

[Brief explanation of the drawing]

FIG. 1 is a schematic diagram showing an assembled state of the shoe hold down device in FIG. 5, and is a perspective view shown together with a brake shoe. FIGS. 2 and 3 are a plan view and a side view, respectively, showing an enlarged show-hold down spring of the show-hold down device shown in FIG. 5. FIG. Figure 4 is the 5th
It is a perspective view which expands and shows the hold-down pin of the hold-down device shown in a figure. Fifth
The figure is a front view showing the main parts of a drum brake in which the shun hold down device of the present invention is assembled. FIG. 6 is a diagram corresponding to FIG. 2 showing another embodiment of the present invention. FIG. 7 is a diagram corresponding to FIG. 3 showing still another embodiment of the present invention. FIG. 8 is a diagram corresponding to FIG. 2 showing still another embodiment of the present invention. 10: Bucking plate, 12, 14: Brake shoe, 20, 22: Shuhold down device, 24: Shuhold down spring, 26:
Shuhold down pin, 28, 30: Coil part, 32, 34: Leg part, 36: Connection part, 38, 40
: Detent part (contact part), 42: Wide part (first part), 44: Guide part (second part), 46, 60:
Narrow width part, 48: Shaft part, 52: Conical head (head)
, 58: Grip section.

Claims (1)

[Scope of claims for utility model registration] (1) A member bent from a single piece of wire,
a pair of coil parts each wound around one axis;
a pair of legs extending in one direction substantially perpendicular to the one axis from mutually separated ends of the coil part; and a pair of legs extending in one direction substantially perpendicular to the one axis from mutually close ends of the coil part; A shew-hold down spring is provided with a U-shaped connection portion that is connected to each other at each extending position in the direction, and the shew-hold down pin head protrudes from the bucking plate at the U-shaped connection portion. In a shoe hold down device of a type that attaches the brake shoe so as to be expandable by engaging with the brake shoe and pressing the brake shoe toward the bucking plate with the leg portion, The head of the down pin is shaped to have a larger diameter than the shaft thereof, and the distance is formed at the U-shaped connection portion of the down spring to allow the head of the down pin to pass through. a first portion provided adjacent to the first portion and formed at a spacing that allows the shaft portion of the shew-hold down pin to pass through but prevents the head portion from passing through and engages with the shaft portion; A shew hold down device characterized in that a second portion is provided. (2) The second portion provided at the U-shaped connection portion of the shoe-hold down spring is inclined so that it approaches the brake shoe toward the distal end when the shoe-hold down spring is installed. The hold-down device according to claim 1, which is a utility model registration. (3) The system according to claim 1 or 2, wherein the U-shaped connection part of the shuhold down spring is provided with a grip part for mounting operation at its tip. U-hold down device. (4) The legs of the shoe-hold down spring are curved at their tips, so that when the shoe-hold down spring is installed, they come into contact with the brake shoe and prevent rotation of the legs around the axis. A hold-down device according to any one of claims 1 to 3, which is provided with a contact portion that provides a contact portion that provides a contact portion.