Abstract:
An adjustable base for carrying a device movably comprises a base body having at least two supporting portions which are extending and protruding from the base body oppositely and respectively. Additionally, one supporting portion is exposed greater than the other supporting portion when the device is moved to a position away from the middle of the adjustable base.

Description:
TECHNICAL FIELD  
       [0001]     This invention relates generally to a base used for supporting a device, and more particularly to an adjustable base, which shortens the distance between the device thereon and a wall so as to save space greatly.  
       BACKGROUND OF THE INVENTION  
       [0002]     As shown in  FIG. 10 , a conventional base  8  is used for supporting a device  7  to be straighten up, wherein the base  8  is assembled to a certain bottom of the device  7  and has two protruding portions which are extending from the base  8  and protruding outward two opposites of the bottom of the device  7  respectively; however, the base  8  is engagable only on the certain bottom of the device  7  so that the two exposed protruding portions of the base  8  must occupy a certain space. Therefore, when the device  7  is placed near against a wall  5 , there must be a great wasted space between one side of the device  7  and the wall  5  where the device  7  cannot move closer to the wall in the result of the limit of the protruding portions.  
         [0003]     From the foregoing it will be seen that room exists for improvements in the base.  
       SUMMARY OF INVENTION  
       [0004]     The primary objective of the present invention is to provide an adjustable base which is assembled to a bottom of a device movably to shorten the distance between the device and a wall so as to save space.  
         [0005]     More particularly, the base body has two supporting portions extending from the base body and protruding outward the two opposites of the bottom of the device. While the device is adjusted to a position away from the middle of the adjustable base, one of the supporting portions is exposed greater than the other supporting portion. In the meantime, the short other supporting portion is suitably for against the wall to shorten space between the device and the wall. 
     
    
     BRIEF DESCRIPTION OF DRAWINGS  
       [0006]     The features and advantages of an adjustable base according to the present invention will be more clearly understood from the following description taken in conjunction with the accompanying drawings in which:  
         [0007]      FIG. 1  is a perspective view of a first embodiment of the present invention, showing a device and an adjustable base;  
         [0008]      FIG. 2A  is a front view of the first embodiment of the present invention, showing the device assembled onto the adjustable base;  
         [0009]      FIG. 2B  is a top view of the first embodiment of the present invention, showing the device assembled onto the adjustable base;  
         [0010]      FIG. 3A  is a front view of the first embodiment of the present invention, showing the device adjusted rightward a position away from the middle of the adjustable base and close to a wall;  
         [0011]      FIG. 3B  is a top view of the first embodiment of the present invention, showing the device adjusted rightward a position away from the middle of the adjustable base and close to the wall;  
         [0012]      FIG. 4A  is a front view of the first embodiment of the present invention, showing the device adjusted leftward a position away from the middle of the adjustable base and close to a wall;  
         [0013]      FIG. 4B  is a top view of the first embodiment of the present invention, showing the device adjusted leftward a position away from the middle of the adjustable base and close to the wall;  
         [0014]      FIG. 5  is a partial cross sectional view of the first embodiment of the present invention; showing the device assembled against the adjustable base;  
         [0015]      FIG. 6  is a partial cross sectional view of the first embodiment of the present invention; showing the device lifted up from the adjustable base;  
         [0016]      FIG. 7  is a partial cross sectional view of a second embodiment of the present invention, showing a device assembled onto an adjustable base;  
         [0017]      FIG. 8  is a top view of a third embodiment of the present invention, showing a device assembled onto two base bodies;  
         [0018]      FIG. 9  is an exploded perspective view of a fourth embodiment of the present invention, showing a device, an adapter and a base body; and  
         [0019]      FIG. 10  shows a conventional base. 
     
    
     DETAILED DESCRIPTION OF PREFERRED EMBODIMENTS  
       [0020]     As shown in  FIG. 1 , an adjustable base according to the first embodiment of the present invention is provided for supporting a device  1  to be straightened up through screwing a base body  2  onto a bottom of the device  1  by at least one screw  3 . As shown in  FIG. 2A , the device  1  is a computer host or an electric device or goods in need of being straightened up.  
         [0021]     Referring again to  FIG. 1 , on the bottom of the device  1  has a pivot  10  with a hole  100  or a threaded hole therein. The base body  2  has a pivot section  20 , two supporting portions  21  (a first supporting portion  21  and a second portions  22 ), in which the pivot section  20  has a notch  200  thereon for receiving the pivot  10 , therefore, the base body  2  can pivot on the pivot  10 . Moreover, the screw  3  is cross the notch  200  of the base body  2  and screwed into the hole  100  of the pivot  10 .  
         [0022]     As illustrated in  FIG. 1 , there is a positioning structure  4  disposed between the device  1  and the base body  2  to allow the base body  2  engaging with a certain bottom of the device  1 . The positioning structure  4  comprises three setting holes  40  arranged in order along a circle arc whose center is the pivot  10  at a suitably distance from the pivot  10  and on the bottom of the device  1 , and three setting bolts  41  protruding from a top of the base body  2  for wedging into the setting holes  40 .  
         [0023]     As for the  FIGS. 1, 2A  and  2 B, there is illustrated the two supporting portions  21 , 22  extending from the base body  2  and protruding outward the two opposites of the bottom of the device  1  and having a first limiting pillar  210  and a second limiting pillar  220  formed thereon respectively.  FIGS. 2A and 2B  show the device  1  is disposed in the middle of the base body  2 , and the first and second supporting portions  21 , 22  are exposed equally.  
         [0024]     As shown in  FIGS. 3A and 3B , the device  1  is adjusted to pivot rightward a certain degree on the pivot  10  such that two right side setting bolts  41  of the base body  2  are wedged into two left side setting holes  40 , meanwhile, the exposed first supporting portion  21  is greatly reduced and the first limiting pillar  210  thereon is against the right side of the device  1  so as to stop the device  1  move out. Thus, the space between the right side of the device  1  and a wall  5  is greatly reduced.  
         [0025]      FIGS. 4A and 4B  show the device  1  is adjusted to pivot leftward a certain degree on the pivot  10  such that two left side setting bolts  41  of the base body  2  are wedged into two right side setting holes  40 , meanwhile, the exposed second supporting portion  22  is greatly reduced and the second limiting pillar  220  thereon is against the left side of the device  1  so as to prevent the device  1  from moving out from the adjustable base. Thus, the space between the left side of the device  1  and the wall  5  is greatly reduced.  
         [0026]      FIG. 5  shows a more detailed illustration of the notch  200  which has a flange  201  extending thereunder and the screw  3  having a thread  30 , a body  31 , and a head  32 , wherein the thread  30  is cross the notch  200  and screwed onto the hole  100  of the pivot  10 ; the body  31  is provided for rotating and sliding up and down within the notch  200 ; and the head  32  is able to against an end of the flange  201  so as to limit a sliding range when the device  1  is lifted up.  
         [0027]      FIG. 6  shows the device  1  can only be lifted upward to a certain height X that is higher than the height of the setting bolts  41  but lower than the second limiting pillar  220 ; moreover, the first limiting pillar  210  is as high as the second limiting pillar  220  as shown in  FIG. 2 . Thus, while being lifted up or pivoted on the pivot  10 , the device  1  will not be blocked by the setting bolts  41  but by the first limiting pillar  210  or the second limiting pillar  220 . Furthermore, it is clearly understood that the first limiting pillar  210  or the second limiting pillar  220  is regarded as the positioning point while the device  1  is pivoted on the base body  2 . According to this, the first limiting pillar  210  or the second limiting pillar  220  is against one side of the device  1  and the setting pillars  41  are properly wedged into the setting holes  40  respectively and correspondingly.  
         [0028]      FIG. 7  shows a second embodiment of the present invention. Comparing with the first embodiment, there is no difference between the first and the second embodiments in the present invention but only the positioning structure  4   a  of the second embodiments of the present invention. The positioning structure  4   a  comprises a plurality of setting cavities  40   a  disposed on the bottom of the device  1  at a suitable distance from the pivot  10  and arranged in order along a circle arc whose center is the pivot  10 ; and an elastic setting part  41   a  provided for being wedged into the setting holes  40   a , which is disposed in a recess  23 . The recess  23  is formed on the base body  2  and has a small diameter opening  230  theretop. Furthermore, the elastic setting part  41   a  comprises a setting bolt  410   a  being cross the opening  230  and wedged into the setting holes  40   a ; and a compression spring  411   a  allowing to push the setting bolt  41   a  upwardly.  
         [0029]      FIG. 8  shows a preferred third embodiment of the present invention. Similar to the first embodiment of the present invention, but the third embodiment of the present invention has two base bodies  2   b  different from only one base body of the first embodiment of the present invention. Wherein, the two base bodies  2   b  can be assembled on to the bottom of the device  1  separately and the two base bodies  2   b  are movable transversely.  
         [0030]      FIG. 9  shows a preferred fourth embodiment of the present invention. Both the first and the fourth embodiment of the present invention are similar but an added adapter  6  is further provided in the fourth embodiment of the present invention to carry the device  1  of the first embodiment of the present invention. In other words, the adjustable base of the fourth embodiment mainly comprises the base body  2  and the adapter  6 , which is provided for carrying a device  1   a , like a computer host or any other electric device or goods in need of being straightened up, and the adapter  6  has a chamber  60  formed theretop for installing the device  1   a . Besides, on the bottom of the adapter  6  has a bolt  61  and holes  62  providing for coupling with the corresponding notch  200  and the corresponding setting bolts  41  of the base body  2  respectively so that the adapter  6  can rotate and be positioned on the base body  2 .  
         [0031]     Numerous characteristics and advantages of the invention have been set forth in the foregoing description, together with details of the structure and function of the invention, and the novel features thereof are pointed out in appended claims. The disclosure, however, is illustrated only, and changes may be made in detail, especially, in matters of shape, size and arrangement of parts, materials and the combination thereof within the principle of the invention, to the full extent indicated by the broad general meaning of the terms in which the appended claims are expressed.