초록 ▼

A wheel-type resistance device includes a flywheel which is rotated together with a hub member around an axle and which has an accommodation chamber indented axially to form a first circumferential portion that extends in a radial direction relative to the axle. A plurality of magnetically attractiv

A wheel-type resistance device includes a flywheel which is rotated together with a hub member around an axle and which has an accommodation chamber indented axially to form a first circumferential portion that extends in a radial direction relative to the axle. A plurality of magnetically attractive members have magnetically permeable members thereon and are angularly displaced on the first circumferential portion. A dragging force adjusting member is mounted on the axle and is shiftable in the axial direction. The adjusting member has a left major surface with a second circumferential portion opposing the first circumferential portion for mounting a plurality of magnets so that the magnets will be drawn by the magnetically attractive members through the permeable members when the flywheel rotates. A shifting member is operable to shift the adjusting member away from the flywheel so as to decrease the dragging force imposed upon the rotation of the flywheel. A coil spring biases the adjusting member toward the flywheel against the action of the shifting member.

대표청구항 ▼

[ We claim:] [1.] A wheel-type resistance device for providing a resisting force to a bicycle exerciser which includes an axle defining an axial direction, and a hub member mounted rotatably on the axle and driven to rotate by a pedaling action of a user, said wheel-type resistance device comprising

[ We claim:] [1.] A wheel-type resistance device for providing a resisting force to a bicycle exerciser which includes an axle defining an axial direction, and a hub member mounted rotatably on the axle and driven to rotate by a pedaling action of a user, said wheel-type resistance device comprising:a flywheel having left and right end walls, said flywheel being adapted to be mounted rotatably on the axle such that said left end wall is proximate to and is rotated together with the hub member around the axle, and such that said right end wall is distal to the hub member, said right end wall having an accommodation chamber therein indented axially and leftward so as to form a dragging force generating wall which is spaced apart from said right end wall in the axial direction and which has a first circumferential portion extending in a radial direction relative to the axle;a plurality of magnetically attractive members angularly displaced on said first circumferential portion of said dragging force generating wall;a plurality of magnetically permeable members provided on said magnetically attractive members;a dragging force adjusting member adapted to be mounted on the axle and shiftable in the axial direction, said adjusting member having a left major surface which is spaced apart from said dragging force generating wall and which has a second circumferential portion opposing said first circumferential portion, and a right major surface;a plurality of magnets angularly displaced on said second circumferential portion of said left major surface such that each of said magnets will be drawn by said magnetically attractive members through said magnetically permeable members when said flywheel is rotated, each of said magnets being spaced apart from the respective one of said magnetically permeable members with a clearance;means for shifting said dragging force adjusting member away from said flywheel in the axial direction so as to decrease dragging force imposed upon rotation of said flywheel; andmeans for biasing said dragging force adjusting member toward said flywheel against action of said shifting means.