Abstract:
A knockdown floor clock mainly includes a clock vertically stably supported on a plurality of legs that are radially connected at upper and lower sideward projected heads to upper and lower joining units, respectively. The upper joining unit includes an upper holding tube that is upward extended from a top center of the unit and cooperates with a plurality of curved side supports located at two sides thereof to provide multiple supporting points below the clock. The use of the upper and lower joining units to radially join the legs enables the forming of a knockdown floor clock that can be easily disassembled for convenient storage or firmly assembled for use.

Description:
FIELD OF THE INVENTION 
   The present invention relates to a knockdown floor clock, and more particularly to a floor clock that has simple structure for easy assembling and can be easily disassembled for convenient storage and transport. 
   BACKGROUND OF THE INVENTION 
   A floor clock mainly includes a plurality of legs supporting a clock thereon. The legs may be differently designed to show unique and beautiful appearances, making the floor clock an important and practical ornament in home design. 
   In the conventional floor clock, the legs for supporting the clock are mutually connected or connected to the clock by way of welding, bonding, etc. These connecting manners produce a floor clock that could not be disassembled once it is constructed. The fixedly assembled floor clock has big volume and therefore requires large space for warehousing or transporting it that adversely reduces its economical benefits. 
   It is therefore desirable to develop an improved floor clock that can be easily assembled and disassembled to eliminate the drawbacks existed in the conventional floor clock. 
   SUMMARY OF THE INVENTION 
   A primary object of the present invention is to provide an improved knockdown floor clock that mainly includes a plurality of legs that are radially connected at upper and lower projected heads to upper and lower joining units, respectively, so as to stably stand. The upper joining unit includes an upper holding tube that is upward extended from a top center of the unit to support a clock thereon. The use of the upper and lower joining units to join the legs enables the forming of a knockdown floor clock that can be easily assembled to stand stably for use, and easily disassembled to occupy a reduced space for convenient storage or transport thereof, and therefore has increased economic value. 
   The knockdown floor clock of the present invention is further provided with a plurality of curved side supports connected to two sides of the top of the upper joining unit. The side supports cooperate with the upper holding tube of the upper joining unit to provide multiple supporting points below the clock, so that the knockdown floor clock can stand on a floor in a more stable manner. 

   
     BRIEF DESCRIPTION OF THE DRAWINGS 
     The structure and the technical means adopted by the present invention to achieve the above and other objects can be best understood by referring to the following detailed description of the preferred embodiments and the accompanying drawings, wherein 
       FIG. 1  is an exploded perspective view of a knockdown floor clock according to the present invention; 
       FIG. 2A  is an enlarged exploded perspective view of a lower joining unit for the floor clock of the present invention; 
       FIG. 2B  is an enlarged exploded perspective view of au upper joining unit for the floor clock of the present invention; 
       FIG. 3A  is an assembled sectional view of the lower joining unit of  FIG. 2A ; 
       FIG. 3B  is an assembled sectional view of the upper joining unit of  FIG. 2B ; 
       FIG. 4  is an assembled front view of the floor clock of the present invention; and 
       FIG. 5  is an assembled side view of the floor clock of the present invention. 
   

   DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS 
   Please refer to  FIGS. 1 ,  4 , and  5  which are exploded perspective, assembled front, and assembled side views, respectively, of a knockdown floor clock according to an embodiment of the present invention. As shown, the knockdown floor clock of the present invention mainly includes a clock  1 , a plurality of legs  2 , an upper joining unit  3 , a lower joining unit  4 , and a plurality of side supports  5 . 
   The clock  1  includes a clock face  11  and a case  12  framing the clock face  11 . The case  12  is provided at an outer periphery with an upper threaded hole  121 , a lower threaded hole  122 , and a plurality of side holes  123  located at two lateral sides of the lower threaded hole  122 . An externally threaded connecting rod  1211  has a lower end screwed into the upper threaded hole  121  and an upper end into a threaded hole preformed at a bottom of an end plug  124 , so as to fixedly connect the end plug  124  to a top of the clock  1 . 
   The legs  2  are vertically located below the clock  1 . Each of the legs  2  is provided at a middle section with an upper and a lower laterally inward projected head  21 ,  22 , which are provided with a through hole  211 ,  221 , respectively, and at a lower end with a threaded hole  23 , into which an adjusting bolt  231  may be screwed by different depths to adjust a supporting height of the leg  2 . 
   Please refer to  FIGS. 2B and 3B  that are enlarged exploded perspective and assembled sectional views, respectively, of the upper joining unit  3 . As shown, the upper joining unit  3  includes a main screw rod  31 , a joining sleeve  32 , an upper cap  33 , a lower cap  34 , an upper holding tube  35 , a lower holding tube  36 , and an outer sleeve  37 . 
   The main screw rod  31  is provided at a middle section with a disk  311 , which is set to a point on the main screw rod  31  by screwing two nuts  313 ,  314  to the main screw rod  31  above and below the disk  311 . The disk  311  is provided along an outer periphery with spaced threaded holes  312 . 
   The joining sleeve  32  is a hollow cylindrical tube having two diametrically opposite openings  321  formed at a middle section thereof. 
   The upper cap  33  is for closing an upper end of the joining sleeve  32 , and has a centered through hole  331  for the main screw rod  31  to upward extend therethrough and screw into a lower end of an internal threaded hole  351  of the upper holding tube  35 . A plurality of side holes  333  are provided closed to an outer periphery of the upper cap  33 ; and a nut  332  on the main screw rod  31  is screwed to a lower side of the upper cap  33 , so as to firmly clamp the upper cap  33  between the nut  332  and the lower end of the upper holding tube  35 . 
   The upper projected head  21  of the leg  2  is adapted to extend into the opening  321  on the joining sleeve  32  and be connected to the outer periphery of the disk  311  by threading a bolt  212  through the through hole  211  on the projected head  21  and the threaded hole  312  on the disk  311 . 
   An upper end of the upper holding tube  35  is connected to a threaded connecting rod  352 , which is then extended into the lower threaded hole  122  on the clock  1  and locked thereto with a nut  353 . 
   The outer sleeve  37  is mounted to an outer side of the upper holding tube  35  to serve as a decorative as well as a reinforcing means. 
   The lower cap  34  is for closing a lower end of the joining sleeve  32  and has a centered through hole for a lower end of the main screw rod  31  to extend therethrough and into an upper end of a threaded hole  361  of the lower holding tube  36 . A lower end of the threaded hole  361  of the lower holding tube  36  is screwed to a threaded connecting rod  362 , which is then screwed to an end plug  363 . 
   Please refer to  FIGS. 2A and 3A  that are enlarged exploded perspective and assembled sectional views, respectively, of the lower joining unit  4 . As shown, the lower joining unit  4  includes a main screw rod  41 , a joining sleeve  42 , an upper cap  43 , a lower cap  44 , an upper holding tube  45 , and a lower holding tube  46 . 
   The main screw rod  41  is provided at a middle section with a disk  411 , which is set to a point on the main screw rod  41  by screwing two nuts  413 ,  414  to the main screw rod  41  above and below the disk  411 . The disk  411  is provided along an outer periphery with spaced threaded holes  412 . 
   The joining sleeve  42  is a hollow cylindrical tube having two diametrically opposite openings  421  formed at a middle section thereof. 
   The upper cap  43  is for closing an upper end of the joining sleeve  42 , and has a centered through hole  431  for the main screw rod  41  to upward extend therethrough and screw into a lower end of an internal threaded hole  451  of the upper holding tube  45 . A nut  432  on the main screw rod  41  is screwed to a lower side of the upper cap  43 , so as to firmly clamp the upper cap  43  between the nut  432  and the lower end of the upper holding tube  45 . 
   The lower projected head  22  of the leg  2  is adapted to extend into the opening  421  on the joining sleeve  42  and be connected to the outer periphery of the disk  411  by threading a bolt  222  through the through hole  221  on the projected head  22  and the threaded hole  412  on the disk  411 . 
   An upper end of the upper holding tube  45  is connected to a threaded connecting rod  452 , which is then connected to an end plug  453 . 
   The lower cap  44  is for closing a lower end of the joining sleeve  42  and has a centered through hole for a lower end of the main screw rod  41  to extend therethrough and into an upper end of a threaded hole  461  of the lower holding tube  46 . A lower end of the threaded hole  461  of the lower holding tube  46  is screwed to a threaded connecting rod  462 , which is then screwed to an end plug  463 . 
   With the upper and the lower joining unit  3 ,  4 , the legs  2  can be radially arranged around the two joining units  3 ,  4  to vertically stably support the clock  1  thereon. 
   The side supports  5  are curved members, and each of them has two externally threaded upper and lower ends  51 ,  52 . The externally threaded upper ends  51  are upward extended into the side holes  123  of the clock  1 , and locked thereto by nuts  511 . The externally threaded lower ends  52  are downward extended into the side holes  333  provided on the upper cap  33  of the upper joining unit  3  and locked thereto by nuts  521 . With the side supports  5  connected to two lower outer sides of the clock  1 , the clock  1  is more securely supported on the legs  2 . 
   When the legs  2  are fully radially extended to support the clock  1  thereon, the adjusting bolt  231  at the lower end of each leg  2  can be screwed into the threaded hole  23  by different depths to adjust an overall supporting height of the leg  2 , so that the whole floor clock of the present invention can stably stand on a floor surface.