Patent ID: 7712192

Claim:
A belt structure for binding a human body for first aid, comprising: a belt for surrounding the human body; a first housing, wherein the first housing has a hollow axle pipe at the front section thereof for fixing the front end of the belt, at least a gear is mounted on the hollow axle pipe, the first housing has at least a resisting element mounted therein for engaging the gear, the first housing has at least a resisting-element window formed thereon for exposing the two ends of the resisting element, the first housing also has a buckling trough mounted at the rear section thereof and an engaging element mounted therein, and the resisting element and the engaging element are respectively biased by an elastic element at one end thereof; a second housing, wherein the second housing is covered on the hollow axle pipe and the resisting element of the first housing, the second housing has an axle pillar mounted therein for extending into the hollow axle pipe, the second housing has at least a driving element mounted thereinside and an elastic element biasing the driving element, the second housing has at least a window formed thereon for exposing the driving element, each gear inside the first housing is engaged by the driving element, and the driving element has a bulge mounted thereon for engaging the resisting element as the driving element is moving backward, thereby the movement of the driving element rejects the resisting element to loose the gear; and a third housing, wherein the third housing has an opening for fixing the rear end of the belt and another opening for extending out thereof, the third housing also a pressing shaft for pressing and fixing the belt, and the third housing further has a buckling element at the other end thereof, wherein the two ends of the belt are respectively fixed at the first housing and the third housing and form a circular belt structure through the first housing and the third housing being buckled together, the second housing turns upwardly by using the axle pillar in the hollow axle pipe as the axle center so as to drive the gear by the driving element and also engaging and fixing the gear by the resisting element as the second housing is homed, and the engaging element and the buckling element respectively of the first housing and the third housing are capable of being released fast for separating the first housing and the third housing, so that a belt structure capable of being fast buckled and loosed and capable of fine tuning the level of tightness is achieved.