Supporting foot assembly

Abstract

A supporting foot assembly includes a base having a spherical convex, a disk connected to the spherical convex, a through hole, and an internal space; a swingably fitting member having a spherical concave swingably and fittingly contacting the spherical convex of the base, a lower edge located at a lower periphery of the spherical concave, an aperture, and an upper outer edge; a prop component having a bolt passing through the through hole and the aperture, a retaining portion integrated to or combined with the bolt and located in the internal space of the base so as to prevent the bolt from completely departing from the through hole of the base; and a nut screwed to the bolt of the prop component to abut against the upper outer edge of the swingably fitting member. Alternatively, the nut is integratedly formed on the swingably fitting member.

What is claimed is: 
     
         1 . A supporting foot assembly, comprising:
 a base ( 10 ), having a spherical convex ( 11 ), a disk ( 12 ) connected to the spherical convex ( 11 ) from below, a through hole ( 13 ), and an internal space ( 14 );   a swingably fitting member ( 20 ), having a spherical concave ( 21 ) swingably and fittingly contacting the spherical convex ( 11 ) of the base ( 10 ), a lower edge ( 22 ) located at a lower periphery of the spherical concave ( 21 ), an aperture ( 23 ), and an upper outer edge ( 24 );   a prop component ( 30 ), having a bolt ( 31 ) passing through the through hole ( 13 ) of the base ( 10 ) and the aperture ( 23 ) of the swingably fitting member ( 20 ), and a retaining portion ( 33 ) integrated to or combined with the bolt ( 31 ) and located in the internal space ( 14 ) of the base ( 10 ) so as to prevent the bolt ( 31 ) completely departing from the through hole ( 13 ) of the base ( 10 ); and   a nut ( 40 ), being screwed to the bolt ( 31 ) of the prop component ( 30 ) so as to abut against the upper outer edge ( 24 ) of the swingably fitting member ( 20 ).   
     
     
         2 . The supporting foot assembly of  claim 1 , further comprising a bottom pad ( 70 ) assembled to the disk ( 12 ) of the base ( 10 ); the base ( 10 ) having a first positioning portion ( 17 ), and the bottom pad ( 70 ) having a second positioning portion ( 72 ) that is configured to be positioned by the second positioning portion ( 17 ) of the base ( 10 ). 
     
     
         3 . The supporting foot assembly of  claim 1 , wherein the prop component ( 30 ) is axially hollowed as a tube and the retaining portion ( 33 ) is flared. 
     
     
         4 . The supporting foot assembly of  claim 1 , wherein the spherical concave ( 21 ) of the swingably fitting member ( 20 ) has an included angle (A 1 ) from a center line thereof that is of between 60 degrees and 80 degrees. 
     
     
         5 . The supporting foot assembly of  claim 1 , wherein an included angle difference (A 2 ) between the spherical convex ( 11 ) of the base ( 10 ) and the spherical concave ( 21 ) of the swingably fitting member ( 20 ) is of between 5 degrees and 30 degrees. 
     
     
         6 . A supporting foot assembly, comprising:
 a base ( 10 ), having a spherical convex ( 11 ), a disk ( 12 ) connected to the spherical convex ( 11 ) from below, a through hole ( 13 ), and an internal space ( 14 );   a swingably fitting member ( 20 ), having a spherical concave ( 21 ) swingably and fittingly contacting the spherical convex ( 11 ) of the base ( 10 ), a threaded hole ( 23 A), and a lower edge ( 22 ) located at a lower periphery of the spherical concave ( 21 ); and   a prop component ( 30 ), having a bolt ( 31 ) passing through the through hole ( 13 ) of the base ( 10 ) and being screwed to the threaded hole ( 23 A) of the swingably fitting member ( 20 ),and a retaining portion ( 33 ) integrated to or combined with the bolt ( 31 ) and located in the internal space ( 14 ) of the base ( 10 ) so as to prevent the bolt ( 31 ) completely departing from the through hole ( 13 ) of the base ( 10 ).   
     
     
         7 . The supporting foot assembly of  claim 6 , further comprising a bottom pad ( 70 ) assembled to the disk ( 12 ) of the base ( 10 ); the base ( 10 ) having a first positioning portion ( 17 ), and the bottom pad ( 70 ) having a second positioning portion ( 72 ) that is configured to be positioned by the first positioning portion ( 17 ) of the base ( 10 ). 
     
     
         8 . The supporting foot assembly of  claim 6 , wherein the prop component ( 30 ) is axially hollowed as a tube and the retaining portion ( 33 ) is flared. 
     
     
         9 . The supporting foot assembly of  claim 6 , wherein the spherical concave ( 21 ) of the swingably fitting member ( 20 ) has an included angle (A 1 ) from a center line thereof that is of between 60 degrees and 80 degrees. 
     
     
         10 . The supporting foot assembly of  claim 6 , wherein an included angle difference (A 2 ) between the spherical convex ( 11 ) of the base ( 10 ) and the spherical concave ( 21 ) of the swingably fitting member ( 20 ) is of between 5 degrees and 30 degrees.