Patent Publication Number: US-7591774-B1

Title: Waist twister with swaying function and heat radiating effect

Description:
BACKGROUND OF THE INVENTION 
   1. Field of the Invention 
   The present invention relates to an exercising machine and, more particularly, to a waist twister to provide an exercising effect to a user. 
   2. Description of the Related Art 
   A conventional waist twister comprises a base disk and a rotation disk rotatably mounted on the top of the base disk. Thus, a user can stand on the rotation disk to exert a rotating force on the rotation disk to rotate the rotation disk relative to the base disk rightward and leftward so that the user&#39;s body can be swung and twisted so as to exercise the user&#39;s body. However, the user can only drive the rotation disk to rotate relative to the base disk, so that the exercising action is tedious and boring, thereby limiting the exercising effect of the waist twister. In addition, the waist twister cannot provide a heat radiating effect to the user, thereby easily causing an uncomfortable sensation to the user. 
   BRIEF SUMMARY OF THE INVENTION 
   In accordance with the present invention, there is provided a waist twister, comprising a base disk, a rotation disk rotatably mounted on a top of the base disk, a top disk secured on a top of the rotation disk to rotate in concert with the rotation disk, a drive motor secured on the top disk to rotate in concert with the top disk and having a top provided with an impeller which has an unevenly distributed weight on the drive motor, and a top cover secured on a top of the top disk to cover the drive motor and the impeller. 
   The primary objective of the present invention is to provide a waist twister that has a swaying function and can provide a heat radiating effect. 
   Another objective of the present invention is to provide a waist twister, wherein the impeller has an unevenly distributed weight on the drive motor, so that when the drive motor is operated to rotate the impeller, the drive motor produces a vibration to vibrate the top disk, the rotation disk and the base disk simultaneously so as to provide a swaying function to the user standing on the top disk, thereby enhancing the exercising effect of the waist twister. 
   A further objective of the present invention is to provide a waist twister, wherein the top cover has a plurality of ventilating holes connected to the impeller of the drive motor to introduce the air flow produced by the impeller of the drive motor to flow outwardly from the top cover and the top disk so as to provide a heat dissipation effect to the user standing on the top disk, thereby providing a comfortable sensation to the user. 
   A further objective of the present invention is to provide a waist twister, wherein each of the support pads is made of a soft material to isolate the base disk from the ground so that the vibration produced by the drive motor is limited to the top disk, the rotation disk and the base disk only. 
   Further benefits and advantages of the present invention will become apparent after a careful reading of the detailed description with appropriate reference to the accompanying drawings. 

   
     BRIEF DESCRIPTION OF THE SEVERAL VIEWS OF THE DRAWING(S) 
       FIG. 1  is a perspective view of a waist twister in accordance with the preferred embodiment of the present invention. 
       FIG. 2  is an exploded perspective view of the waist twister as shown in  FIG. 1 . 
       FIG. 3  is a front cross-sectional view of the waist twister as shown in  FIG. 1 . 
       FIG. 4  is a schematic top cross-sectional operational view of the waist twister as shown in  FIG. 2 . 
       FIG. 5  is a bottom view of a rotation disk of the waist twister as shown in  FIG. 2 . 
       FIG. 6  is a bottom view of a base disk of the waist twister as shown in  FIG. 2 . 
       FIG. 7  is a partially front operational view of the waist twister as shown in  FIG. 1 . 
   

   DETAILED DESCRIPTION OF THE INVENTION 
   Referring to the drawings and initially to  FIGS. 1-6 , a waist twister  1  in accordance with the preferred embodiment of the present invention comprises a base disk  30 , a plurality of support pads  60  mounted on a bottom of the base disk  30 , a rotation disk  20  rotatably mounted on a top of the base disk  30 , a top disk  10  secured on a top of the rotation disk  20  to rotate in concert with the rotation disk  20 , a drive motor  70  secured on the top disk  10  to rotate in concert with the top disk  10  and having a top provided with an impeller  73  which has an unevenly distributed weight on the drive motor  70 , a top cover  80  secured on a top of the top disk  10  to cover the drive motor  70  and the impeller  73 , an inner ring  40  mounted on an inner periphery of the top disk  10  and located between the top disk  10  and the base disk  30 , and an outer ring  50  mounted on an outer periphery of the top disk  10  and located between the top disk  10  and the base disk  30 . 
   The top disk  10  is combined with the rotation disk  20  and has a surface provided with a plurality of positioning holes  11 , a plurality of positioning slots  12 , a plurality of screw holes  13  and a plurality of screw bores  14 . The inner periphery of the top disk  10  is provided with a downward extending inner extension  15  combined with the inner ring  40 . The inner extension  15  of the top disk  10  has an annular shape and is provided with a plurality of downward extending inner locking ribs  17 . The outer periphery of the top disk  10  is provided with a downward extending outer extension  16  combined with the outer ring  50 . The outer extension  16  of the top disk  10  has an annular shape and is provided with a plurality of downward extending outer locking ribs  18 . 
   The top of the base disk  30  is provided with a plurality of positioning bores  31 . The bottom of the base disk  30  is provided with a plurality of receiving recesses  35  for mounting the support pads  60 . The base disk  30  has a surface provided with a plurality of through holes  33  each aligning with and connected to a respective one of the receiving recesses  35 . The base disk  30  has an outer periphery provided with a protruding limit portion  34 . 
   The rotation disk  20  is sandwiched between the top disk  10  and the base disk  30 . The rotation disk  20  has a surface provided with a plurality of protruding massaging bosses  21  inserted through and protruding outwardly from the positioning holes  11  of the top disk  10  and a plurality of foot pads  22  inserted through and protruding outwardly from the positioning slots  12  of the top disk  10 . The rotation disk  20  has an outer periphery provided with a protruding limit section  23  that is movable to abut the limit portion  34  of the base disk  30  to limit a further rotation of the rotation disk  20  relative to the base disk  30 . The rotation disk  20  has a bottom provided with a plurality of annular slideways  24  (as shown in  FIG. 5 ) aligning with the positioning bores  31  of the base disk  30 , and the waist twister  1  further comprises a plurality of rolling balls  32  securely mounted in the positioning bores  31  of the base disk  30  and slidably mounted in the slideways  24  of the rotation disk  20  so that the rolling balls  32  are slidable and movable in the slideways  24  of the rotation disk  20  when the rotation disk  20  is rotatable relative to the base disk  30 . 
   Each of the support pads  60  has a top provided with a threaded hole  61 , and the waist twister  1  further comprises a plurality of locking screws  90  each extending through a respective one of the through holes  33  of the base disk  30  and each screwed into the threaded hole  61  of a respective one of the support pads  60  to combine the support pads  60  and the base disk  30  together. Each of the support pads  60  has a side provided with an elongate reinforcing strips  62 . 
   The drive motor  70  is supported by a support bracket  71  which is secured on the top disk  10 . The support bracket  71  extends through the top disk  10 , the rotation disk  20  and the base disk  30 , and the impeller  73  of the drive motor  70  protrudes outwardly from the support bracket  71  and the top disk  10  and faces the top cover  80 . The support bracket  71  has a periphery provided with a plurality of through bores  72 , and the waist twister  1  further comprises a plurality of locking screws  91  each extending through a respective one of the through bores  72  of the support bracket  71  and each screwed into a respective one of the screw holes  13  of the top disk  10  to combine the support bracket  71  and the top disk  10  together. 
   The top cover  80  has a periphery provided with a plurality of fixing holes  81 , and the waist twister  1  further comprises a plurality of locking screws  92  each extending through a respective one of the fixing holes  81  of the top cover  80  and each screwed into a respective one of the screw bores  14  of the top disk  10  to combine the top cover  80  and the top disk  10  together. The top cover  80  has a surface provided with a plurality of ventilating holes  82  aligning with and connected to the impeller  73  of the drive motor  70  to introduce an air flow  93  produced by the impeller  73  of the drive motor  70  to flow outwardly from the top cover  80  and the top disk  10 . 
   The inner ring  40  has an inner periphery provided with an annular fixing groove  41  to allow insertion of the inner extension  15  of the top disk  10 . The fixing groove  41  of the inner ring  40  has a bottom provided with a plurality of fixing apertures  42  to allow insertion of the inner locking ribs  17  of the inner extension  15 . 
   The outer ring  50  has an outer periphery provided with an annular retaining groove  51  to allow insertion of the outer extension  16  of the top disk  10 . The retaining groove  51  of the outer ring  50  has a bottom provided with a plurality of retaining apertures  52  to allow insertion of the outer locking ribs  18  of the outer extension  16 . Thus, the top disk  10 , the rotation disk  20  and the base disk  30  are combined together by the inner ring  40  and the outer ring  50 . 
   In practice, referring to  FIGS. 1-7 , the base disk  30  is fixed by the support pads  60  and cannot be moved, the top disk  10  is secured on a top of the rotation disk  20 , and the rolling balls  32  are slidable and movable in the slideways  24  of the rotation disk  20  when the rotation disk  20  is rotatable relative to the base disk  30 . Thus, a user can stand on the top disk  10  to exert a rotating force on the top disk  10  to rotate the rotation disk  20  relative to the base disk  30  rightward and leftward so that the user&#39;s body can be swung and twisted so as to exercise the user&#39;s body. At this time, the limit section  23  of the rotation disk  20  is movable to abut the limit portion  34  of the base disk  30  to limit a further rotation of the rotation disk  20  relative to the base disk  30  so as to prevent the rotation disk  20  from being rotated relative to the base disk  30  excessively. In such a manner, the impeller  73  has an unevenly distributed weight on the drive motor  70 , so that when the drive motor  70  is operated to rotate the impeller  73 , the drive motor  70  produces a vibration to vibrate the top disk  10 , the rotation disk  20  and the base disk  30  simultaneously as shown in  FIG. 7  so as to provide a swaying function to the user standing on the top disk  10 , thereby enhancing the exercising effect of the waist twister. In addition, the top cover  80  has a plurality of ventilating holes  82  connected to the impeller  73  of the drive motor  70  to introduce the air flow  93  produced by the impeller  73  of the drive motor  70  to flow outwardly from the top cover  80  and the top disk  10  as shown in  FIG. 3  so as to provide a heat dissipation effect to the user standing on the top disk  10 , thereby providing a comfortable sensation to the user. Further, each of the support pads  60  is made of a soft material to isolate the base disk  30  from the ground so that the vibration produced by the drive motor  70  is limited to the top disk  10 , the rotation disk  20  and the base disk  30  only. 
   Accordingly, the impeller  73  has an unevenly distributed weight on the drive motor  70 , so that when the drive motor  70  is operated to rotate the impeller  73 , the drive motor  70  produces a vibration to vibrate the top disk  10 , the rotation disk  20  and the base disk  30  simultaneously so as to provide a swaying function to the user standing on the top disk  10 , thereby enhancing the exercising effect of the waist twister. In addition, the top cover  80  has a plurality of ventilating holes  82  connected to the impeller  73  of the drive motor  70  to introduce the air flow  93  produced by the impeller  73  of the drive motor  70  to flow outwardly from the top cover  80  and the top disk  10  so as to provide a heat dissipation effect to the user standing on the top disk  10 , thereby providing a comfortable sensation to the user. Further, each of the support pads  60  is made of a soft material to isolate the base disk  30  from the ground so that the vibration produced by the drive motor  70  is limited to the top disk  10 , the rotation disk  20  and the base disk  30  only. 
   Although the invention has been explained in relation to its preferred embodiment(s) as mentioned above, it is to be understood that many other possible modifications and variations can be made without departing from the scope of the present invention. It is, therefore, contemplated that the appended claim or claims will cover such modifications and variations that fall within the true scope of the invention.