초록 ▼

A drum brake assembly having a parking brake actuating lever is provided so that the parking brake cable end may be assembled in a blind fashion to the actuating lever. The cable is provided with a button. A spring is attached to the lever and to the backing plate about a parking brake cable opening

A drum brake assembly having a parking brake actuating lever is provided so that the parking brake cable end may be assembled in a blind fashion to the actuating lever. The cable is provided with a button. A spring is attached to the lever and to the backing plate about a parking brake cable opening. The spring end attached to the lever has a ramp section and a hook end, the ramp section being in a tapered open channel formed on the lever end and the hook end being secured to the lever. The cable button is inserted axially through the backing plate opening through the spring, being guided by the spring, into the channel. Further insertive movement of the cable button causes the button to be deflected upwardly by the coil spring ramp portion and the channel sides, side loading the cable. When the button passes the end of the ramp portion and the channel smaller end, the stored force in the cable because of the side loading moves the cable and the button downwardly in the channel. The button moves into tension a force-transmitting engagement with the edges of the channel smaller end so that as the cable is then tensioned the lever will be moved to actuate the brake.

대표청구항 ▼

In a blind cable assembly, a lever adapted to be pivotally moved to actuate a drum brake mechanism enclosed by a brake drum and a backing plate, said lever having one end formed to an open “J”shape with non-parallel sides forming an axially and upwardly tapered, upwardly open, channel at the bottom

In a blind cable assembly, a lever adapted to be pivotally moved to actuate a drum brake mechanism enclosed by a brake drum and a backing plate, said lever having one end formed to an open “J”shape with non-parallel sides forming an axially and upwardly tapered, upwardly open, channel at the bottom of the “J”, said channel having an open receiving end and a smaller open other end and a notch in one edge of one of said sides near the upper part of said smaller open end; a compression coil spring forming a lever return spring and a guide member, said coil spring having one end coil in abutting engagement with said channel sides at said open receiving end and having its other end operatively secured to and grounded for reaction on the backing plate around a backing plate opening so that said coil spring continually urges said lever in a brake released direction, said coil spring having a ramp section extending from said one end coil axially and laterally upward through said channel, and a hook end formed on the other end of said ramp section from said one end coil, said hook end being received in said notch to hold said coil spring securely to said lever one end; and a brake cable having a button on one end thereof, said cable being adapted to be tensioned to actuate the drum brake mechanism, said brake cable being blind-assembled to said lever by being inserted through the backing plate opening into and through said coil spring and moved axially into said channel, said spring ramp section and said channel sides guiding and deflecting said button and a portion of said cable adjacent thereto laterally upward and axially through said channel, side loading said cable and storing a spring-like force therein, until said button as moved beyond said ramp section and the edges of said channel sides forming said channel smaller open end, the spring-like force stored in said cable then moving said cable and said button laterally so that said cable is positioned in the bottom of said tapered channel and said button is in abutting engagement with the edges of said channel sides forming said channel smaller open end, tensioning of said cable for brake application then being transmitted to said lever through said button to actuate the drum brake.