Adaptor for converting conventional office chair into a multifunctional office/fitness chair

摘要

The invention is directed to an adaptor for converting a conventional office chair into a multifunctional office/fitness chair. The adaptor comprises a seat connector, a pair of rowing shafts, a seat post holder, and a foldable footrest. By adjusting the angle of the backrest up to 120°, a user can use the converted chair either as a conventional office chair, or as a fitness chair capable of assisting the user to do sit-up exercises in a rowing motion which focuses the exercise forces on the abdominal muscles, burns abdomen fat pad, and therefore effectively reduces waist line. Further, because the rowing motion is assisted by the backrest and armrest, the risk to injure the neck or back is eliminated.

主权项

1. An adaptor for converting a conventional office chair into a multifunctional office or fitness chair, said adaptor comprising:
a) a seat connector comprising a rotatable pivoting component, a seat connecting plate, a reclining angle setting component, a pair of supporting rods, and a balancing leg; wherein said pivoting component is positioned at a joint between a backrest and a seat of a chair and is adapted to be able to rotate the backrest up to 120° away from the chair seat surface; said seat connecting plate is attached to a bottom of the pivoting component and the entire seat connector is mounted to a bottom side of the seat; a center of a back side of the pivoting component is connected to the reclining angle setting component; middle sections of the pair of supporting rods are mounted vertically to opposite ends on the back side of the pivoting component; upper sections of the pair of supporting rods are adapted to be mounted on a back side of the backrest; lower ends of supporting rods are configured to have coupling structures; an upper end of the balancing leg is attached to a lower face of the seat connecting plate at a rear end; and a lower end of the balancing leg extends towards a floor, and is terminated with a floor contacting component; b) a pair of longitudinal rowing shafts comprising front ends and rear ends; c) a seat post holder configured to securely fix a pair of tracks for the pair of longitudinal rowing shafts on opposite sides of a central seat post of the chair; and d) a foldable footrest attached to the front ends of the pair of longitudinal rowing shafts, said foldable footrest comprising a foldable middle section and a pair of shoe-like structures at a front section.