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US 8,840,125 B2Granted
Rollator with improved brake device
OwnerWendy Huanginventor
Life of this patent
Estimating the term…
Abstract
A rollator includes a support frame assembly, a handgrip unit pivotable relative to the support frame assembly between depressed and non-depressed positions, at least three wheels mounted pivotally to a bottom portion of the support frame assembly, and at least one braking device including a brake wire unit connected to the handgrip unit, and a brake fixed to the support frame assembly at a location proximate to one of the wheels and connected to the brake wire unit. The brake includes a casing, a stop member, and a gear connected coaxially to one of the wheels. The stop member is movable between free and braking positions where the stop member is spaced apart from and is engaged with the gear, respectively.
Claims16
A rollator with an improved braking device, comprising:
- a main frame body including a support frame assembly, a handgrip unit pivoted to a rear top side of said support frame assembly, and at least three wheels mounted pivotally to a bottom portion of said support frame assembly, said handgrip unit being pivotable relative to said support frame assembly between a depressed position and a non-depressed position;
- and
- at least one braking device including a brake wire unit connected to said handgrip unit and fixed to said support frame assembly, and a brake fixed to said support frame assembly at a location proximate to one of said wheels and connected to said brake wire unit, said brake including a casing connected fixedly to said support frame assembly, a sliding member connected to said brake wire unit and slidable relative to said casing, a stop member connected to one end of said sliding member that is proximate to said one of said wheels, and a gear connected coaxially to said one of said wheels, said stop member being movable between a free position, where said stop member is spaced apart from said gear, and a braking position, where said stop member is engaged with said gear;
- when said handgrip unit is pivoted from said non-depressed position to said depressed position, said brake wire unit is displaced to move said brake, so that said stop member is moved from said braking position to said free position, and said wheels are free to rotate;
- and
- when said handgrip unit is restored from said depressed position to said non-depressed position, said brake wire unit is displaced to move said brake, so that said stop member is moved from said free position to said braking position, and said wheels are prevented from rotation;
- wherein said handgrip unit includes two handgrips, each of which is pivotable relative to said support frame assembly between said depressed position and said non-depressed position, each of said handgrips including a lever pivoted to said support frame assembly, a tubular sleeve sleeved slidably on and covering said lever, and a warning portion disposed on one end of said lever that is distal from said support frame assembly, when said tubular sleeve is pushed inwardly of said lever, said warning portion is exposed from said tubular sleeve and said handgrip is retained in said depressed position.
4 more elements
A rollator with an improved braking device, comprising:
- a main frame body including a support frame assembly, a handgrip unit pivoted to a rear top side of said support frame assembly, and at least three wheels mounted pivotally to a bottom portion of said support frame assembly, said handgrip unit being pivotable relative to said support frame assembly between a depressed position and a non-depressed position;
- and
- at least one braking device including a brake wire unit connected to said handgrip unit and fixed to said support frame assembly, and a brake fixed to said support frame assembly at a location proximate to one of said wheels and connected to said brake wire unit, said brake including a casing connected fixedly to said support frame assembly, a sliding member connected to said brake wire unit and slidable relative to said casing, a stop member connected to one end of said sliding member that is proximate to said one of said wheels, and a gear connected coaxially to said one of said wheels, said stop member being movable between a free position, where said stop member is spaced apart from said gear, and a braking position, where said stop member is engaged with said gear;
- when said handgrip unit is pivoted from said non-depressed position to said depressed position, said brake wire unit is displaced to move said brake, so that said stop member is moved from said braking position to said free position, and said wheels are free to rotate;
- and
- when said handgrip unit is restored from said depressed position to said non-depressed position, said brake wire unit is displaced to move said brake, so that said stop member is moved from said free position to said braking position, and said wheels are prevented from rotation;
- wherein said brake further includes a first biasing member sleeved on said sliding member, said first biasing member having one end abutting against said casing and the other end abutting against said stop member to bias said stop member away from said casing, said casing having an opening proximate to said one of said wheels.
4 more elements
Dependencies are inferred from the claim text.