초록 ▼

The drum-in-hat assembly (10) comprises a disc brake (12) mounted slidably relative to a backing plate (18) which includes an opening (19) through which extends a reverse scissors actuator (40) for the drum brake (30) of the assembly (10). The drum brake (30) includes a pair of arcuate drum brake sh

The drum-in-hat assembly (10) comprises a disc brake (12) mounted slidably relative to a backing plate (18) which includes an opening (19) through which extends a reverse scissors actuator (40) for the drum brake (30) of the assembly (10). The drum brake (30) includes a pair of arcuate drum brake shoes (32, 34) supported relative to the backing plate (18), with the shoes (32, 34) having a pair of opposed brake shoe ends (36, 38) engaged by the actuator (40). The actuator (40) comprises a pair of levers (42, 46) pivotably attached to one another with each lever (42, 46) having a second lever end (48, 58) engaging a respective end (38, 36) of an associated brake shoe, wherein the second lever end (48, 58) has either a slot (49) or an edge (59) located laterally away from the other and engaging the associated brake shoe end (38, 36). The actuator (40) is free to float relative to the backing plate (18), and the levers (42, 46) are located within a housing (70) attached to the backing plate (18).

대표청구항 ▼

A drum-in-hat brake assembly having a parking brake assembly with a reverse scissors actuator, comprising a pair of drum brake shoes supported relative to a backing plate, the reverse scissors actuator comprising first and second levers attached pivotably to one another, said first and second levers

A drum-in-hat brake assembly having a parking brake assembly with a reverse scissors actuator, comprising a pair of drum brake shoes supported relative to a backing plate, the reverse scissors actuator comprising first and second levers attached pivotably to one another, said first and second levers each having first and second lever ends with the second lever ends being located between and engaging a pair of opposing ends of said brake shoes, said first lever having a first lever end means for cable means to pass therethrough, the first lever end of said first lever extending to said second lever end which engages an end of an adjacent brake shoe, the second lever end of said first lever being located on a lateral side of said first lever opposite from and facing away from said second lever, said first lever comprising a pair of spaced-apart lever parts which receive therein a portion of said second lever, said lever parts each including a slotted opening which provides a snap-together connection with pin means, the second lever having a first lever end for attachably receiving said cable means, and the second lever having a second lever end which engages the adjacent brake shoe end and the second lever end disposed laterally on a side of said second lever facing away from said first lever, displacement of said second lever by the cable means causing said second lever ends to move the respective ends of the brake shoes laterally away from one another to effect braking.