Wheeled walker brake lever mounting structure
원문보기
IPC분류정보
국가/구분
United States(US) Patent
등록
국제특허분류(IPC7판)
F16D-065/14
F16C-001/10
출원번호
US-0219322
(2002-08-16)
발명자
/ 주소
Wu, David
대리인 / 주소
Troxell Law Office PLLC
인용정보
피인용 횟수 :
20인용 특허 :
4
초록▼
A wheeled walker brake lever mounting structure is constructed to include a mounting base frame fixedly fasten ed to one handlebar of a wheeled walker, a brake cable inserted through the mounting base frame and connected to a brake assembly at rear wheels of the wheeled walker, a brake lever pivoted
A wheeled walker brake lever mounting structure is constructed to include a mounting base frame fixedly fasten ed to one handlebar of a wheeled walker, a brake cable inserted through the mounting base frame and connected to a brake assembly at rear wheels of the wheeled walker, a brake lever pivoted to the mounting base frame for turning by hand in either of two reversed directions to pull the brake cable and to further stop the wheeled walker, and an auxiliary control block coupled to one side of the mounting base frame for turning with the hand to move the brake lever upwards or downwards and to achieve a braking action.
대표청구항▼
1. A wheeled walker brake lever mounting structure comprising a mounting base frame fastened to one handlebar of a wheeled walker, said mounting base frame comprising a top wall, a front wall, a bottom wall, a first sidewall, a second sidewall, a barrel integral with said top wall, a wire hole exten
1. A wheeled walker brake lever mounting structure comprising a mounting base frame fastened to one handlebar of a wheeled walker, said mounting base frame comprising a top wall, a front wall, a bottom wall, a first sidewall, a second sidewall, a barrel integral with said top wall, a wire hole extended through said bottom wall, and a wire guide mounted in said wire hole, said barrel having an axially extended mounting hole, which receives the handlebar of the wheeled walker, and a transverse screw hole, which receives a tightening up screw that fixes said barrel to the handlebar of the wheeled walker, a brake lever pivoted to said mounting base frame between the first and second sidewalls of said mounting base frame, said brake lever having a locating hole near a front side thereof and a backwardly extended handhold portion for the holding of the hand, and a brake cable inserted through said wire guide in said wire hole, said brake cable having one end terminating in an end rod, which is fastened to the locating hole of said brake lever, and an opposite end fastened to a rear wheel brake assembly of the wheeled walker;wherein said mounting base frame further comprises a stop block inwardly protruded from an inner surface of said front wall and forming, a stop face, a recessed positioning portion disposed on the inside between said frontwall and said top wall, and two pivot holes respectively extended through said left sidewall and said right sidewall and aligned in a line; said brake lever further comprises a base block connected to one end of said handhold portion, a conical front protruding block perpendicularly forwardly protruded from a front side of said base block, said conical front protruding block having a front side, a coupling slot of arches cross section transversely extended through said base block and pivotally connected between the pivot hole in said left sidewall and the pivot hole in said right sidewall by a pivot, a top positioning groove transversely disposed in a top side of said coupling slot, and a bottom positioning groove transversely disposed in a bottom side of said coupling slot, said top positioning groove and said bottom positioning groove being not vertically aligned; when the user turned said handhold portion of said brake lever downwards to pull up said brake cable, said top positioning groove of said base block of said brake lever is stopped at the pivot in the pivot holes of said left and right sidewalls, and the front side of the said conical front protruding block of said brake lever is stopped at the recessed positioning portion of said mounting base frame, achieving a brake action; when the user turned said handhold portion of said brake lever upwards to pull said brake cable and to force said bottom positioning groove of said base block of said brake lever into engagement with the pivot in the pivot holes of said left and right sidewalls, the front side of said conical front protruding block of said brake lever is stopped at said stop face of said stop block, achieving a brake action. 2. The wheeled walker brake lever mounting structure as claimed in claim 1, wherein the locating hole of said brake lever faces downwards, the wire hole of said mounting base frame formed in the bottom wall of said mounting base frame and facing downwards, said brake cable is supported in said brake lever and said mounting base frame at a location relatively closer to the wheel axles of rear wheels of the wheeled walker. 3. The wheeled walker brake lever mounting surface as claimed in claim 1, wherein said mounting base frame further comprises a through hole in said right sidewall, a circular opening in said left sidewall, and a protruding block outwardly protruded from said left sidewall above said circular opening; said base block of said brake lever comprises a transverse pivot hole, a first open chamber at a front side of said transverse pivot hole, a second open chamber at a back side of said transvers e pivot hole; an auxiliary control block is coupled to said mounting base frame and said brake lever at one side around said protruded block, said auxiliary control block comprising a pivot hole connected to the transverse pivot hole of said brake lever and the through hole in said mounting base frame by a pivot, a first stop pin and a second stop pin respectively inserted into said first open chamber and said second open chamber in said base block os said brake lever, a back open chamber, which receives the protruded block of said mounting base frame, and a first stop wall and a second stop wall perpendicularly extended from a back sidewall thereof at two sides of said back open chamber; when the user turned said auxiliary control block downwards, said first stop pin is stopped at a top sidewall of said first open chamber, and said second stop pin is stopped at a bottom sidewall of said second open chamber to force said brake lever downwards and to further pull up said brake cable unit said first stop wall of said auxiliary control block has been stopped at said protruded block; when the user turned said auxiliary control block upwards, said first stop pin is stopped at a bottom sidewall of said first open chamber, and said second stop pin is stopped at a top sidewall of said second open chamber to force said brake lever upwards and to further pull up said brake cable until said second stop wall of said auxiliary control block has been stopped at said protruded block. 4. The wheeled walker brake lever mounting structure as claimed in claim 1 further comprising a return spring mounted in said second open chamber of said base block of said brake lever and stopped against said second stop pin.
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