Waist exercise device

Abstract

A waist exercise device has an annular rail, a slide base slidably mounted on the annular rail, and a balance weight connected to the slide base via a rope. A user wears the waist exercise device on his waist and twists his waist and moves his hips to fling the balance weight to revolve around the annular rail and to drive the slide base to slide along the annular rail. Thus, muscles in the waist, the abdomen, and the hips of the user are trained and strengthened. Since the annular rail does not repeatedly press against the waist and the abdomen, exercising with the waist exercise device does not cause damage to the muscles in the waist, the abdomen, and the hip, does not injure the spine, and is safe.

What is claimed is: 
     
         1 . A waist exercise device comprising
 an annular rail being circular;   a slide base slidably mounted on and selectively orbiting around the annular rail; and   a balance weight connected to the slide base via a rope.   
     
     
         2 . The waist exercise device as claimed in  claim 1 , wherein
 the annular rail has
 a main panel being annular and having an upper peripheral edge, a lower peripheral edge, and an outer surface; 
 two extending panels respectively formed around and protruding from the upper peripheral edge and the lower peripheral edge of the main panel and radially extending outwardly, and each extending panel having an outer peripheral edge; 
 two retaining panels respectively formed around and protruding from the outer peripheral edges of the extending panels, and each one of the retaining panels extending toward the other retaining panel; and 
 an annular recess defined between the extending panels; and 
   the slide base is slidably mounted in the annular recess of the annular rail and has
 two lateral surfaces respectively corresponding to the extending panels of the annular rail; and 
 multiple inner rollers rotatably mounted on the lateral surfaces of the slide base, and each inner roller disposed between the main panel and a corresponding one of the extending panels. 
   
     
     
         3 . The waist exercise device as claimed in  claim 2 , wherein
 the annular rail further has a gap defined between the retaining panels of the annular rail;   the slide base further has
 a longitudinal surface corresponding to the gap of the annular rail; and 
 multiple outer rollers rotatably mounted on the longitudinal surface of the slide base and disposed between the retaining panels of the annular rail. 
   
     
     
         4 . The waist exercise device as claimed in  claim 2 , wherein
 each extending panel of the annular rail further has an outer surface;   the annular rail further has
 a first mounting end; 
 a second mounting end selectively mounted around the first mounting end of the annular rail; 
 multiple protruding stops separately formed on the outer surfaces of the extending panels, arranged in rows, and disposed adjacent to the first mounting end of the annular rail; 
 two locking hooks respectively mounted pivotally on the outer surfaces of the extending panels and disposed adjacent to the second mounting end of the annular rail, and each locking hook selectively hooking one of the protruding stops; and 
 two resilient elements respectively mounted between the locking hooks and the extending panels of the annular rail, and each resilient element having two ends respectively abutting a corresponding locking hook and a corresponding extending panel. 
   
     
     
         5 . The waist exercise device as claimed in  claim 3 , wherein
 each extending panel of the annular rail further has an outer surface;   the annular rail further has
 a first mounting end; 
 a second mounting end selectively mounted around the first mounting end of the annular rail; 
 multiple protruding stops separately formed on the outer surfaces of the extending panels, arranged in rows, and disposed adjacent to the first mounting end of the annular rail; 
 two locking hooks respectively mounted pivotally on the outer surfaces of the extending panels and disposed adjacent to the second mounting end of the annular rail, and each locking hook selectively hooking one of the protruding stops; and 
 two resilient elements respectively mounted between the locking hooks and the extending panels of the annular rail, and each resilient element having two ends respectively abutting a corresponding locking hook and a corresponding extending panel. 
   
     
     
         6 . The waist exercise device as claimed in  claim 4 , wherein
 the annular rail is formed by connecting multiple connecting rail sections, a first mounting rail section, and a second mounting rail section, wherein
 the connecting rail sections are pivotally connected to each other in series to form an arced rail having two ends, and each connecting rail section is an arc; 
 the first mounting rail section is pivotally connected to one of the ends of the arced rail; and 
 the second mounting rail section is pivotally connected to the other end of the arced rail and is selectively mounted around the first mounting rail section; 
   the protruding stops of the annular rail are formed on the first mounting rail section; and   the locking hooks and the resilient elements are mounted on the second mounting rail section.   
     
     
         7 . The waist exercise device as claimed in  claim 5 , wherein
 the annular rail is formed by connecting multiple connecting rail sections, a first mounting rail section, and a second mounting rail section, wherein
 the connecting rail sections are pivotally connected to each other in series to form an arced rail having two ends, and each connecting rail section is an arc; 
 the first mounting rail section is pivotally connected to one of the ends of the arced rail; and 
 the second mounting rail section is pivotally connected to the other end of the arced rail and is selectively mounted around the first mounting rail section; 
   the protruding stops of the annular rail are formed on the first mounting rail section; and   the locking hooks and the resilient elements are mounted on the second mounting rail section.   
     
     
         8 . The waist exercise device as claimed in  claim 1 , wherein
 the annular rail further has an inner annular surface; and   the waist exercise device further comprises a cushion belt mounted on and around the inner annular surface of the annular rail.   
     
     
         9 . The waist exercise device as claimed in  claim 2 , wherein
 the annular rail further has an inner annular surface; and   the waist exercise device further comprises a cushion belt mounted on and around the inner annular surface of the annular rail.   
     
     
         10 . The waist exercise device as claimed in  claim 3 , wherein
 the annular rail further has an inner annular surface; and   the waist exercise device further comprises a cushion belt mounted on and around the inner annular surface of the annular rail.