Patent ID: 6740014
Filing Date: 2004-05-25
Classification: A63B

Abstract:
A body exerciser, comprising a main body structure, a gravity mechanism, and a restoring mechanism, wherein:the main body structure includes a flat plate, a casing secured on a top face of the flat plate, two spindles rotatably mounted on the casing, two single-direction bearings each mounted on a respective one of the two spindles, two reels each mounted on a respective one of the two single-direction bearings and each having an inner wall formed with a plurality of slits, two pull cords each having a first end mounted around an outer wall of a respective one of the two reels and a second end extended outward from the casing, and two restoring springs each mounted on the inner wall of a respective one of the two reels and each having a fixing end secured in one of the slits of the respective reel; the gravity mechanism includes two friction wheels each secured on a respective one of the two spindles of the main body structure to rotate therewith, a first plate secured on the top face of the flat plate for supporting each of the two spindles, a positioning frame secured between the first plate and the casing, an adjusting column extended through a top face of the positioning frame, an adjusting knob secured on a top of the adjusting column for rotating the adjusting column, a displacement frame screwed on a bottom of the adjusting column, an elastic member urged between the positioning frame and the displacement frame, and two friction pieces secured on the displacement frame and enclosed around a periphery of a respective one of the two friction wheels; and the restoring mechanism includes a second plate secured on a side edge of the casing, the second plate of the restoring mechanism is formed with two through holes and a plurality of positioning holes arranged around a periphery of each of the two through holes in an annular manner, the restoring mechanism further includes two drive shafts each passed through a respective one of the two through holes of the second plate, two rotation knobs each secured on a first end of a respective one of the two drive shafts for rotating it, two drive gears each secured on and rotated by a second end of a respective one of the two drive shafts, and two driven gears each mounted on a respective one of the two spindles and each meshing with a respective one of the two drive gears, each of the two driven gears has one side provided with a positioning pin which is secured on a free end of a respective one of the two restoring springs, each of the two rotation knobs has one side provided with a plurality of protruding stubs each positioned in a respective one of the positioning holes of the second plate.