Abstract:
A monitor support device includes a tube for fixing a post and at least one collar is pivotably connected to the tube by engaging two respective toothed surfaces on the tube and the at least one collar so as to support a load in vertical direction. A plurality of pivot members are pivotably connected with each other and the first pivot member of the series of pivot members is pivotably connected to the at least one collar, and the last pivot member of the series of pivot members is pivotably connected with a U-shaped connection member on the monitor. The monitor can be pivoted in horizontal and vertical directions and the toothed surfaces are able to hold the monitor in position in vertical directions.

Description:
BACKGROUND OF THE INVENTION  
       [0001]     (1) Field of the Invention  
         [0002]     The present invention relates to a monitor support device which allows the monitor to be pivoted in horizontal directions and can be supported in vertical directions.  
         [0000]     (2) Description of the Prior Arts  
         [0003]     In a modern office, computers are used for the members in the office and each member is equipped with at least one monitor which is connected with a computer so as to form a office network. Each monitor is connected to the desk by a support device which generally includes a base with a post connected thereon and the monitor is pivotably connected to the post. The monitor can be adjusted in horizontal directions to meet the user&#39;s needs. However, an inherent shortcoming for the conventional monitor support device is that the monitor is so heavy so that the support device cannot well hold it in the direction directions and the monitor tends to pivot downward due to its weight.  
       SUMMARY OF THE INVENTION  
       [0004]     The present invention relates to a monitor support device that includes a tube for being connected to a post and two plates extend radially from the tube. One of the two plates has a positioning plate connected to an inside thereof and the positioning plate has a first toothed surface. At least one collar has an insertion extending therefrom which is pivotably connected between the two plates. The insertion has a second toothed surface which is matched with the first toothed surface. A first pivot member is pivotably connected to a first passage of the at least one collar and has a first bar extending radially therefrom. An extension rod has a first end connected with the first bar and a second end of the extension rod is connected with a second pivot member which is pivotably connected with a third pivot member. The third pivot member is pivotably connected with a U-shaped connection member which is connected with a monitor.  
         [0005]     The primary object of the present invention is to provide a monitor support device which can support the monitor in vertical directions.  
         [0006]     The present invention intends to provide a monitor support device that can be extended to connect with multiple support devices to form a monitor wall.  
         [0007]     The present invention will become more obvious from the following description when taken in connection with the accompanying drawings which show, for purposes of illustration only, a preferred embodiment in accordance with the present invention. 
     
    
     BRIEF DESCRIPTION OF THE DRAWINGS  
       [0008]      FIG. 1  is an exploded view to show the first embodiment of the support device of the present invention;  
         [0009]      FIG. 2  is a perspective view to show the first embodiment of the support device of the present invention;  
         [0010]      FIG. 3  is a cross sectional view of the first embodiment of the support device of the present invention;  
         [0011]      FIG. 4  is a top cross sectional view of the first embodiment of the support device of the present invention;  
         [0012]      FIG. 5  shows two sets of the support devices are connected together;  
         [0013]      FIG. 6  shows another embodiment of the tube with three collars;  
         [0014]      FIG. 7  shows three monitors are cooperated with each other to form a monitor wall;  
         [0015]      FIG. 8  shows two sets of the support devices are connected with each other;  
         [0016]      FIG. 9  is an exploded view to show a second embodiment of the support device of the present invention;  
         [0017]      FIG. 10  is a perspective view to show the support device in  FIG. 9  of the present invention;  
         [0018]      FIG. 11  is a cross sectional view to show the support device in  FIG. 9  of the present invention;  
         [0019]      FIG. 12  shows the two toothed surfaces are matched with each other in the second embodiment of the present invention, and  
         [0020]      FIG. 13  shows the monitor is adjusted in vertical directions. 
     
    
     DESCRIPTION OF THE PREFERRED EMBODIMENTS  
       [0021]     Referring to FIGS.  1  to  4 , the monitor support device of the present invention comprises a tube  10  through which a post  74  extends and the tube  10  includes two holes  101 ,  102  defined through a wall thereof. A fastening sleeve  11  having a longitudinal slit is received in the tube  10  and mounted on the post  74 , two positioning bolts  131 ,  14  extend through the two holes  101 ,  102  and contact against the post  74  to position the tube  10  relative to the post  74 . One of the bolts  131  is connected with an operation handle  13 . A collar  20  is connected to the tube  10  and includes a first passage  21 .  
         [0022]     A first pivot member  30  has a first threaded rod  31  which extends through the first passage  21  and is cooperated with washers  321  and a nut  32 . The first pivot member  30  is pivotably connected to the first passage  21  of the collar  20  and has a first bar  33  extending radially therefrom. The first bar  33  includes a plurality of grooves and ridges  331 ,  332  defined in an outer periphery thereof. An extension rod  60  includes an axial passage defined therethrough and the first bar  33  is inserted into a first end of the extension rod  60 . A second pivot member  40  has a second passage  42  and a second bar  41  which includes a plurality of grooves and ridges defined in an outer periphery thereof and is inserted into a second end of the extension rod  60 .  
         [0023]     The extension rod  60  includes a groove  63  defined in a top thereof and threaded holes  62  are located in an inside of the groove  63  so that bolts  61  extend through the threaded holes  62  and are engaged with the grooves  332  of the first and second bars  33 ,  41 . A decoration plate  64  is engaged with the groove  63  to hide the threaded holes  62  and a fastening belt  65  is wrapped around the extension rod  60  to position the decoration plate  64 .  
         [0024]     A third pivot member  50  has a second threaded rod  31  which extends through the second passage  42  and is cooperated with washers  521  and a nut  52  so that the third pivot member  50  is pivotably connected to the second passage  42 . The third pivot  50  includes a lug  53  which has a through hole  531  and the lug  53  is pivotably connected to the U-shaped connection member  55  by extending a bolt  54  through a polygonal hole  551  in one of two wings of the U-shaped connection member  55 , the through hole  531  in the lug  53 , a circular hole in the other wing, a nut  554  and connected with a handle  56 . The U-shaped connection member  55  includes a center hole  552  and a bracket  71  is connected to the U-shaped member  55  by a bolt  53  extending through the center hole  552  and connected with a nut. The bracket  71  is connected to a connection plate  72  fixed on a monitor  90  by bolts  711 .  
         [0025]     The length of the extension rod  60  can be set to be a desired length so as to extend the position of the monitor  90 . The monitor  90  can also be pivoted in horizontal directions by pivoting the first pivot member  30 , the second pivot member  40  and/or the third pivot member  50 .  
         [0026]      FIG. 5  shows that two sets of the first pivot members  30  and the extension rods  60  are used to increase the length in the horizontal directions. In other words, the second pivot member  40  is connected with another set of the first pivot member  30  and the extension rod  60 .  
         [0027]      FIGS. 6 and 7  show that the number of the collars  82 ,  83 ,  84  can be three and the three collars  82 ,  83 ,  84  are cooperated with on tube  81  so that three sets of the support devices can be connected to one post  74  to arrange three monitors  90  side by side to form a monitor wall.  
         [0028]      FIG. 8  shows that the number of the collars  87 ,  88  can be two and the two collars  87 ,  88  are cooperated with on tube  86  so that two sets of the support devices can be connected to one post  74  as shown.  
         [0029]     Referring to FIGS.  9  to  12 , a second embodiment of the monitor support device comprises a tube  110  a tube  10  through which a post  74  extends and the tube  110  includes two holes defined through a wall thereof. A fastening sleeve  111  having a longitudinal slit is received in the tube  110  and mounted on the post  74 . Two positioning bolts  1131 ,  1132  extend through the two holes and contact against the post  74  to position the tube  110  relative to the post  74 . One of the bolts  1131  is connected with an operation handle  113 . Two plates  112 ,  114  extend radially from the tube  110  and one of the two plates  112 ,  114  has a positioning plate  115  connected to an inside thereof. One of the two plates  112 ,  114  has a plurality of apertures  1141  defined therethrough and the positioning plate  115  has a plurality of positioning protrusions  1151  which are inserted into the apertures  1141 . The positioning plate  115  has a first toothed surface  1153 .  
         [0030]     A collar  120  has an insertion  121  extending therefrom which is pivotably connected between the two plates  112 ,  114 . The insertion  121  has a recessed area  1212  and a second toothed surface  1211  is defined in the recessed area  121  and the second toothed surface  1211  is matched with the first toothed surface  1153 . A bolt  117  extends through a central hole  1142  in the plate  114 , the hole  1152  in the positioning plate  115 , the hole  1214  in the insertion  121 , another hole  1121  in the plate  112  and is connected to a threaded hole  1180  defined in a knob  118  so as to position the insertion  121  between the two plates  112 ,  114  of the tube  110 .  
         [0031]     A first pivot member  130  has a first threaded rod  1301  which extends through a first passage  123  in the collar  120  and is cooperated with washers  1321  and a nut  132 , and is connected to a threaded recess in a knob  134 . A first bar  133  extends radially from the first pivot member  130  and includes plurality of grooves and ridges  1331 ,  1332  defined in an outer periphery thereof.  
         [0032]     An extension rod  160  has an axial passage defined therethrough and the first end of the extension rod  160  is connected with the first bar  133  and a second end of the extension rod  160  is connected with a second bar  141  of a second pivot member  140 . The second bar  141  includes a plurality of grooves and ridges defined in an outer periphery thereof. The extension rod  160  includes a plurality of bolts  161  threadedly extend through threaded holes  162  in the extension rod  160  and are connected with the grooves  1331  in the first and second pivot members  133 ,  141 . The extension rod  60  includes a groove  163  defined in a top thereof and the threaded holes  162  are located in an inside of the groove  163 . A decoration plate  164  is engaged with the groove  163  to hide the threaded holes  162  and a fastening belt  165  is wrapped around the extension rod  160  to position the decoration plate  164 . The second pivot member  140  has a second passage  142 .  
         [0033]     A third pivot member  150  is pivotably connected to the second passage  142  and pivotably connected with a U-shaped connection member  156  which is connected with a monitor  90 . The third pivot  150  includes a second threaded rod  151  which extends through the second passage  142  and is cooperated with washers  1521  and a nut  152 , and is connected to a knob  153 . The third pivot  50  includes a lug  154  which has a through hole  1541  and the lug  154  is pivotably connected to the U-shaped connection member  156  by extending a bolt  155  through the U-shaped connection member  156 , the through hole  1541  in the lug  154  and connected with a handle  157 . The U-shaped connection member  156  is connected with a bracket  71  and a connection plate  72  that is fixed on a monitor  90 .  
         [0034]      FIG. 13  shows that two sets of the first pivot members  130  and the extension rods  160  are used to increase the length in the horizontal directions. In other words, the second pivot member  140  is connected with another set of the first pivot member  130  and the extension rod  160 . By the engagement of the first and second toothed surfaces  1153 ,  1211 , the monitor  90  can be held in position in the vertical directions.  
         [0035]     While we have shown and described the embodiment in accordance with the present invention, it should be clear to those skilled in the art that further embodiments may be made without departing from the scope of the present invention.