Abstract:
A Liquid Crystal Display (called LCD as following) power-driven structure comprises a rotating mechanism, a lifting mechanism and an adjusting mechanism with a power unit each. The power unit drives the gears of the rotating mechanism to adjust the lateral angle of the LCD, the gears of the lifting mechanism to adjust the height level of the LCD and the gears of the adjusting mechanism to adjust the pitch angle of the LCD. The LCD power-driven structure overcomes the drawbacks of the prior technique and accomplishes the purpose of adjusting the LCD to any required posture without manual effort for saving a user&#39;s energy and improving the convenience.

Description:
BACKGROUND OF THE INVENTION  
       [0001]     1. Field of the Invention  
         [0002]     This invention relates to a Liquid Crystal Display (called LCD as following) power-driven structure which more particularly comprises a rotating mechanism, a lifting mechanism and an adjusting mechanism that each is driven by an independent power unit for adjusting the lateral angle, the pitch angle and the height level automatically on the purpose of improving utility and operating convenience.  
         [0003]     2. Description of the Prior Art  
         [0004]     A prior LCD I, shown as  FIG. 1 , comprises a fixed supporter  11  linked to an un-adjustable monitor  12  and is put on a cabinet or a table for using. As a user does not sit on the straight direction of facing the prior LCD  1 , he/she usually can&#39;t see the program or read the words on it because the reflection of lights impacts the user&#39;s visual performance. It&#39;s necessary to move the prior LCD  1  to a suitable angle position. If the prior LCD  1  is very large or heavy, it could cause the user a lot of strength to make a movement. This is very easy to induce the user&#39;s injury or the prior LCD  1  damage during the adjusting action.  
         [0005]     Furthermore, as the height difference between the user sitting posture and the prior LCD  1  on a cabinet or a table is great, it easily causes the user&#39;s visual fatigue. So, it is necessary to move the prior LCD  1  to a higher or lower place for using. This is also easily result in personal injury or the prior LCD  1  damage during the moving action.  
         [0006]     Therefore, considering of the defects and the inconvenience of the prior LCD  1  mentioned as above, this invention is created to increase the value and the range of substantial utility by inventor&#39;s professional knowledge and spirit of pursuing innovation and perfecting.  
       SUMMARY OF THE INVENTION  
       [0007]     This invention provides a technique solution as: a LCD power-driven structure. The LCD power-driven structure comprises a rotating mechanism, a lifting mechanism and an adjusting mechanism. The rotating mechanism includes a pedestal fixed on a monitor bracket of a monitor. A pivot trough set on the pedestal joins a bearing which has a gear part driven by a rotating gear. A pivot hole is set on the gear part and is corresponding to a hollow of the bearing and a hollow of the pivot trough. A shaft is inserted through the pivot hole and the hollows for fixing. And the shank also penetrates a bearing and a hollow of a cover. The lifting mechanism contains a box with a pivot trough set on the cover. The pivot trough is penetrated by the shank and joins a rotating bearing. A gear driven by an electrical thread gear is set around the surface of the rotating bearing. A box lid is set on the rotating bearing. An axle tube is set on the box lid for the shank penetrating through and into the rotating bearing. And a tube set on the shank joins the axle tube tightly. The adjusting mechanism comprises a base set on one end of the tube. A left gearbox and a right gearbox are set on each opposite side of the base. A power gear is set inside the left gearbox. A fixed part is set between the left gearbox and the right gearbox and a toothlike adjuster driven by the power gear is extended from the fixed part. The rotating mechanism, the lifting mechanism and the adjusting mechanism are connecting to a power unit each. The power unit of the rotating mechanism makes the rotating gear to drive the gear part for adjusting the lateral angle of the LCD. The power unit of the lifting mechanism makes the electrical thread gear to drive the gear around the rotating bearing and then makes the tube which joins tightly with the axle tube to move vertically for changing the height position of the LCD. The power unit of the adjusting mechanism makes the power gear to drive the toothlike adjuster of the fixed part to adjust the pitch angle of the LCD.  
         [0008]     The embody shape of the gear part of the rotating mechanism could be sector or round.  
         [0009]     About the rotating gear of the rotating mechanism mentioned above, it comprises an electrical thread gear, a small gear, a small thread gear and a gear axle. The electrical thread gear is set near the gear part and is fixed inside a setting part set on the pedestal. The both ends of the gear axle penetrating the small gear and the small thread gear are set in a clipping part inside the pedestal. And a containing part is set inside the box for joining the electrical thread gear of the lifting mechanism.  
         [0010]     The pedestal contains also a hooking post connected to one end of an elastic part. The other end of the elastic part is clipped on one end of the gear axle. This can protect the gear part from teeth cracking by separating from the small thread gear as receiving a huge force.  
         [0011]     About the shank of the lifting mechanism mentioned above, an inserting hole is set on one end of the shank with a latch inserted into for avoiding the axle tube escaped from the end of the shank.  
         [0012]     A hole is set on the box lid and an opening is set on the side of the hole. The opening is corresponding and props to a prominence set on the side of the tube. A fixed hole set on the axle tube is corresponding tightly to a fixed hole set on one end of the tube fixed with a latch or a bolt.  
         [0013]     The power unit as mentioned above could be a contact switch type or a remote controlled switch type.  
         [0014]     The principal object, also the feature, of this invention is: the power units set on the rotating mechanism, the lifting mechanism and the adjusting mechanism. By driving the gears set on above mechanisms with the power units, it is very easy for a user to adjust the lateral angle, the pitch angle and the height position without any manual effort. This invention improves the economic benefits of the convenience and the utility of a prior LCD. 
     
    
     BRIEF DESCRIPTION OF THE DRAWINGS  
       [0015]      FIG. 1  is an assembly perspective view of a prior LCD monitor;  
         [0016]      FIG. 2  is an exploded perspective view of the rotating mechanism and the lifting mechanism of a preferred embodiment of the present invention;  
         [0017]      FIG. 3  is an exploded perspective view of the adjusting mechanism of a preferred embodiment of the present invention;  
         [0018]      FIG. 4  an assembly perspective view of the rotating mechanism, the lifting mechanism and the adjusting mechanism of a preferred embodiment of the present invention;  
         [0019]      FIG. 5  illustrates the preferred embodiment of the present invention of the rotating mechanism in an operating position;  
         [0020]      FIG. 6  illustrates the preferred embodiment of the present invention of the lifting mechanism in an operating position;  
         [0021]      FIG. 7  illustrates the preferred embodiment of the present invention of the adjusting mechanism in an operating position. 
     
    
     DESCRIPTION OF THE PREFERRED EMBODIMENTS  
       [0022]     This invention comprises a rotating mechanism  2 , a lifting mechanism  3 , a adjusting mechanism  4  and three power units  5 .  
         [0023]     Referring to the  FIG. 2 , a rotating mechanism  2  contains a pedestal  21  which is fixed on a bracket  22  of a monitor. The pedestal  21  includes a pivot trough  211  used to join a bearing  23 . The bearing  23  contains a gear part  24  which is driven by a rotating gear  25 . A pivot hole  241  is set on the gear part  24  and is corresponding to a hollow  231  on the bearing  23  and a hollow  2111  on the pivot trough  211  which are inserted by a shaft  26  thoroughly for fixing. And the other end of the shaft  26  is inserted into a hollow  231  on another bearing  23  and a hollow  271  of a cover  27  for fixing.  
         [0024]     The embody shape of the gear part  24  can be sector or round. And the rotating gear  25  comprises an electrical thread gear  251 , a small gear  25 , a small thread gear  253  and a gear axle  254 . A setting part  212  is set on the pedestal  21  for fixing the electrical thread gear  251  near the gear part  24 . The both ends of the gear axle  254  are fixed in a clipping part  213  of the pedestal  21  after penetrating the small gear  252  and the small thread gear  253 . A hooking post  214  is installed in proper place inside of the pedestal  21  for hooking one end of an elastic part  215 . And the other end of the elastic part  215  is hooked on one end of the gear axle  254 . As receiving a huge outside force, the gear part  24  is separated from the small thread gear  253  for avoiding the teeth of the gear part  24  cracked.  
         [0025]     Furthermore, a lifting mechanism  3  comprises a box  31  which is set on the cover  27 . A pivot trough  311  set on the box  31  is penetrated by the shaft  26  and is joined with a rotating bearing  32 . A gear  33  set around the rotating bearing  32  is driven by an electrical thread gear  34 . An axle tube  36  is set on the box lid  35  which is set on the rotating bearing  32  for penetrating a shank  37  through and into the rotating bearing  32 . A tube  38  is covered the shank  37  and is joined tightly with the axle tube  36 .  
         [0026]     A containing part  312  is set inside of the box  31  for fixing the electrical thread gear  34 . And an inserting hole  371  is set on one end of the shank  37  for inserting a latch  372  to avoid the escaping of the axle tube  36 . A hole  351  is set on the box lid  35  and an opening  352  is set on side of the hole  351 . The opening  352  is corresponding and propping a prominence  382  which is set on one side of the tube  38 . And a fixed hole  381  set on this end of the tube  38  is corresponding tightly to a fixed hole  361  set on the axle tube  36 , and the fixed-holes  381 ,  361  are penetrated by a latch  383  or a bolt for fixing.  
         [0027]     Referring to the  FIG. 3 , an adjusting mechanism  4  contains a base  41  which is mounted on one end of the tube  38 . A left gearbox  42  with a power gear  44  and a right gearbox  43  are set correspondingly on each opposite side of the base  41 . A fixed part  45  is set between the left gearbox  42  and the right gearbox  43 , and a toothlike adjuster  451  extended from the fixed part  45  is driven by the power gear  44 .  
         [0028]     A placing part  411  is set on the proper place of the base  41  for putting the left and right gearboxs  42 ,  43  and the power gear  44  IN. On the side near the fixed part  45 , a joining part  412  is set for inserting one end of the tube  38  for fixing. Some fixed holes  413  are set equally on each opposite side of the base  41 , and every fixed hole  413  is corresponding to an aperture  421  of the left gearbox  42  or an aperture  431  of the right gearbox  43 . Every pair of the fixed hole  413  and the aperture  421 ,  431  is fixed with a latch  414 . A fixed post  422  set on each corner of the left gearbox  42  is corresponding to a fixed hole  432  of the right gearbox  43  and both fixed holes  422 ,  432  are fixed by a bolt.  
         [0029]     A pivot hole  452  set on the toothlike adjuster  451  of the fixed part  45  is corresponding to a pivot hole  423  on the left gearbox  42  and a pivot hole  433  on the right gearbox  43 , and is fixed by a penetrating pivot  454 . And a jog  453  is set on each opposite side of the fixed part  45  for joining a connecting plate  6  which is connected to a LCD.  
         [0030]     The power gear  44  comprises an electrical thread gear  441 , a small gear  442 , a small thread gear  443 , a parent gear  444 , a child gear  445  and a gear axle  446 . The electrical thread gear  441 , the parent gear  444  and the child gear  445  are set on the left gearbox  42 . Both ends of the gear axle  446  penetrated through the small gear  442  and the small thread gear  443  is fixed on a clip  424  set in the left gearbox  42 .  
         [0031]     Referring to the  FIG. 4 , the rotating mechanism  2 , the lifting mechanism  3  and the adjusting mechanism  4  are connecting to a power unit  5  each. The power unit  5  could be a contact switch type or a remote controlled switch type. The power unit  5  of the rotating mechanism  2  drives the gear part  24  through the rotating gear  25  for adjusting the lateral angle of the LCD. The electrical thread gear  34  of the lifting mechanism  3  drives the gear  33  on the rotating bearing  32  and then makes the tube  37  which joins tightly with the axle tube  36  to move vertically for changing the height position of the LCD. The power gear  44  of the adjusting mechanism  4  drives the toothlike adjuster  451  of the fixed part  45  for adjusting the pitch angle of the LCD.  
         [0032]     Referring to the  FIG. 5 , as the LCD is facing on a different position or the user sitting posture is deviated from the LCD, the user only need to switch on the power unit  5  of the rotating mechanism  2 . The electrical thread gear  251  of the rotating gear  25  drives the small gear  252  and the small thread gear  253  to rotate. Then the gear part  24  is driven to rotate laterally. The user can adjust the lateral rotation angle until the program or the words shown on the LCD clearly without applying any manual effort.  
         [0033]     Referring to the  FIG. 6 , because the height ratio of the sitting posture of a child or a adult is different, it causes that the height difference between the user&#39;s sitting position and the LCD on a cabinet or a table is changing frequently. The user can just switch on the power unit  5  of the lifting mechanism  3  to drive the shank  37  of the rotating bearing  32  to self rotate through the electrical thread-gear  34 . Then, because the prominence  382  of the tube  38  is embedded in the opening  352  (unshown) of the box lid  35  and limits the axle tube  36  and the shank  37  to move vertically only, so as to the movement of the tube  38 . This can achieve the goal of adjusting the height position of the LCD without any manual movement.  
         [0034]     Referring to the  FIG. 7 , as the program or the words on the LCD can&#39;t be seen or read clearly just because of the deviated pitch angle of the LCD, the user only need to switch on the power unit  5  of the adjusting mechanism  4  to drive the electrical thread gear  441  of the power gear  44 , and then the electrical thread gear  441  drives the small gear  442 . The small gear  442  drives the parent gear  444  through the thread gear  443 . Then, the child gear  445  set on the parent gear  444  drives the toothlike adjuster  451  of the fixed part  45  to adjust the pitch angle of the LCD without pulling the backside of the LCD manually.  
         [0035]     To summarize the above statements, the LCD power-driven structure of this invention applies the power unit  5  on every gear in above mentioned mechanisms to control the adjustment of the lateral angle, the pitch angle and the height position without manual effort. So this invention improves the economic efficiency of the convenience and the utility of the prior LCD  1 .  
         [0036]     Obviously the invention is susceptible to changes or alternations without defeating its practicability. Therefore, the preferred embodiment shown in the drawings and described herein is not confined.