Abstract:
The present invention provides fitness sit-up chair, which is typically comprised of a frame and an exercise ball, wherein said frame is constructed of a support and a triangle stand, said exercise ball is mounted on the foldable triangle stand. The AB trainer has easy exercising, easy folding, occupying small volume features, meanwhile facilitates to packaging, transporting and storing.

Description:
BACKGROUND OF THE INVENTION 
       [0001]    1. Field of the Invention 
         [0002]    The present invention relates to a fitness sporting apparatus, and more particularly to a rotatable Swiss-ball AB (abdominal) trainer. 
         [0003]    2. Description of Prior Art 
         [0004]    Along with the continuous improvement of the life level of the people, various fitness exercises are widely popularized, meanwhile the various fitness sporting apparatus as assistant tools of fitness sport have made considerable headway, such like the innovated various styles of running machines, weightlifting, chest developers, rowing machines, sit-up boards, exercise balls (Swiss-ball) and so on, are came out in the market. Among of them, the abdominal fitness apparatuses are in good grace of the people bored by abdominal shape problems. 
         [0005]    In accordance with the conventional technology, the apparatuses used for shaping abdomen simplistic, such as said exercise ball is put on the ground or leaned against some places for location so as not to carry out its all functions, in the same case, the sit-up boards have relative static, rigid and big volume shortcomings so that they are inconvenient for storing and transportation. 
         [0006]    Therefore, for overcoming the shortcomings of the conventional sit-up boards and the exercise ball, a sport product having soft of the exercise ball and sit-up board&#39;s function is designed, meanwhile it also has smaller volume for storing, and movable for meeting the necessary of the user features, so the present invention comes out. 
       OBJECTS AND SUMMARY OF THE INVENTION 
       [0007]    It is therefore a main object of the present invention to provide a rotatable Swiss-ball AB trainer facilitating to make various exercises, it also has foldable, small volume features for apt to package and transport and store. 
         [0008]    The second object of the present invention is to provide a rotatable Swiss-ball AB trainer convenience for use. 
         [0009]    For achieving the objects depicted above, a rotatable Swiss-ball AB trainer of the present invention is typically comprised of a frame and an exercise ball, wherein said frame is constructed of a support and a triangle stand, said exercise ball is mounted on the foldable triangle stand. 
         [0010]    Said foldable triangle stand is consisted of side bars, rear carriage and tilting bars, said side bar is connected to the support with one end, and another end of the side bar is connected to the top end of the rear carriage via the tilting bar. 
         [0011]    Said tilting bar is a two-bar linkage located on the both ends with bolts respectively. 
         [0012]    Said side bar and the support are attached with a strut bracing. 
         [0013]    Said strut bracing is a bar located by a bolt on one end and a latch on another end. 
         [0014]    Said rear carriage is a U-shaped bar. 
         [0015]    Said rear carriage is attached with a handle on each top end respectively. 
         [0016]    Said foldable triangle is consisted of side bars, rear carriage and cross pivoting connectors, said side bar is connected to the support with one end, and another end of the side bar is connected to the top end of the rear carriage via the cross pivoting connector crossly located by a latch. 
         [0017]    Said support is constructed of ground-based pipes and hook pipes, within said hook pipe is in telescopiform. 
         [0018]    Said exercise ball is an inflatable ball. 
         [0019]    As adopting the project depicted above, the present invention has following advantages comparing with the prior art:
       1. due to the foldable triangle stand, it can be folded up so as to reduce the volume of the frame, further to the whole AB trainer in convenience of packaging, transporting or storing;   2. due to the hook pipe attached on the support, the feet of exerciser can be hooked on and located facilitating to operation;   3. Due to the handles formed on the top of the rear carriage, the user can hold on as sitting down or up conveniently so that the action is smooth and safety.       
 
     
    
     
       BRIEF DESCRIPTION OF THE DRAWINGS 
         [0023]      FIG. 1  is an exploded view of the present invention. 
           [0024]      FIG. 2  is a perspective view of the present invention. 
           [0025]      FIG. 3  is an exploded view showing another embodiment of the pre-sent invention. 
           [0026]      FIG. 4  is a perspective view showing the combination state of another embodiment of the present invention. 
           [0027]      FIG. 5  is a perspective view showing the folded state of another embodiment of the present invention. 
       
    
    
     DETAILED DESCRIPTION OF PREFERRED EMBODIMENTS 
       [0028]    Referring to  FIG. 1  and  FIG. 2 , a rotatable exercise ball AB trainer provided by the present invention is comprised of a frame  1 , a exercise ball  2 . 
         [0029]    Said frame  1  is constructed of a support  11  and a triangle stand  12 . 
         [0030]    Said exercise ball  2  is mounted on the foldable triangle stand  12  via a tube  16  passing through said exercise ball  2  and a securing bar  15  fitting into the inside of the tube  16  by securing the securing bar  15  on the both top ends of the triangle stand  12  crossly with the nuts  150  respectively. 
         [0031]    Said triangle stand  12  is designed into foldable. The structure, as shown in  FIG. 1 , is constructed of side bars  121 , a rear carriage  122  and tilting bars  123 , said side bar  121  is connected to the support  11  with one end via a pivoting pin  129 , and a strut bracing  124  is attached beyond the pivoting connection of the side bar  121  and the support  11 , therein said strut bracing  124  being a bar is located on the support  11  with one end by a latch  131 , and with another end on the side bar  121  by a bolt  130 ; and another end of the side bar  121  is connected to the top end of the rear carriage  122  via the securing bar  15  by gearing the nuts  150  in the threaded ends of the securing bar  15 , and the tilting bar  123  being a foldable two-bar linkage is attached on between the side bar  121  and the rear carriage  122  by locating the both ends with bolts  130 , in the same way, said tilting bar  123  also can be a bar as same as the strut bracing  124 . Said rear carriage  122  can be shaped in U-shaped, or other shapes. As tending to fold up, just need to pull out the latches  131  locking the strut bracings  124  from the locking positions respectively, and to bend the tilting bars  123  (two-bar linkage) to release the location positions of the strut bracings  124  and the tilting bars  123 , so that the rear carriage  122 , the side bars  121  and the support  11  can be folded up conveniently for retracting the triangle stand  12  and the frame  1 . In this way, the volume of the whole AB trainer can be reduced greatly for packaging, transporting and storing easily. The folding structure of said triangle stand  12  also can be in other styles, and the tilting bar  123  also can be in other mechanism, here will not instantiate in detail further. 
         [0032]    Referring to  FIG. 3  to  FIG. 5 , another preferred embodiment of the present invention is typically comprised of a frame  1  and an exercise ball  2 , wherein said frame  1  is constructed of a support  11  and a triangle stand  12 , and said exercise ball  2  is mounted on the foldable triangle stand  12 . The differences of the embodiment from the first embodiment is that the triangle stand  12  is constructed of side bars  121 , a rear carriage  122  and triangle connectors  125 , said side bar  121  is connected to the support  11  with one end via a pivoting pin  129 , and a strut bracing  134  is attached between the pivoting connection of the side bar  121  and the support  11 , therein said strut bracing  134  being a bar bended the both ends into a long folding head and a short folding head respectively is located on the coordinating holes of the support  11  and the side bar  121  by plugging in separately; and another end of the side bar  121  is pivoted on the side of the triangle connector  125  with a rivet  126 , for locating the side bar  121  on the triangle connector  125  relatively, a latching pin  127  is employed for plugging into the locating holes  128  respectively drilled on this end of the side bar  121  and the coordinated end of the triangle connector  125 , the top end of the rear carriage  122  is fit into the inside of the housing hole built on the other end of the triangle connector  125 , and riveted on by a rivet  126 , or via two rivets the top end of the rear carriage  122  is directly fixed on the other side of the triangle connector  125 . As tending to fold up, just need to pull out the latching pins  127  from the locking locating holes  128  respectively, so that the side bars  121  can be rotatable relative to the triangle connector  125 , as shown in  FIG. 5 , for folding up conveniently to reducing the volume as same as the above-described in the first embodiment, it will not be described again. 
         [0033]    For further reducing the volume of the whole AB trainer, the exercise ball  2  is designed into an inflatable ball, so that the inflated ball can be used in exercising, and the bled ball is in convenience of packaging, transporting and storing with the smaller volume. 
         [0034]    Said support  11  is constructed of ground-based pipes and hook pipes  13 , within said hook pipe is in telescopiform for locating the feet of user and adjusting the size according to the necessary; said rear carriage (U-shaped)  122  is attached with a handle  14  on each top end respectively for holding on by the user as sitting down or up conveniently.