Electric umbrella stand

Abstract

An electrical stand poling umbrella comprises a stand pole, a sliding seat, a suspending arm, a pulling arm, a frame and a drive mechanism. The frame includes a fixed joint mounted at a top of a central rod, a movable joint mounted at a bottom of the central rod, and multiple upper ribs and lower ribs. The drive mechanism includes an electromotor, a rope axle linked to the electromotor by a gear assembly, and a rope having a first end fastened on the rope axle. The drive mechanism is installed in the movable joint. The rope has a second end extending in turn through the frame, the suspending arm, and the pulley and is fastened on the stand pole. The electromotor is electrically connected with a power supply by a wire. The drive mechanism will not be dampened in rainy days. The stand pole has an enough strength for long usage life. In addition, the electromotor has a lower output power and is highly efficient. A hand crank is provided on the stand pole for manual operation.

1 . An electric umbrella stand comprising: 
 a stand pole;    a pulley in the stand pole;    a sliding seat movably mounted outside the stand pole;    a suspending arm;    a pulling arm;    a frame with a drive mechanism, the frame having a fixed joint mounted at a top of a central rod;    a movable joint mounted at a bottom of the central rod;    at least one upper rib; and    at least one lower rib;    where the suspending arm has two ends, the ends respectively and pivotally connected to the sliding seat and the fixed joint,    where the suspending arm has a middle portion that is pivotally mounted on a first end of the pulling arm,    where a second end of the pulling arm is pivotally mounted on a top of the stand pole,    where the at least one upper rib has a first upper rib end pivotally mounted on the fixed joint,    where the at least one lower rib has a first lower rib end pivotally mounted on the movable joint,    where the at least one lower rib has a second lower rib end pivotally mounted on the coupler of the at least one upper rib and suspending arm,    where the drive mechanism has an electromotor,    where a rope axle is coupled to the electromotor by a gear assembly,    where a first end of a rope is fastened on the rope axle,    where the drive mechanism is installed onto the movable joint,    where a second end of the rope passes through:    the frame, the suspending arm, and the pulley,    where the second end of the rope is fastened to the stand pole, and    where the electromotor is electrically connected to a power supply via a wire.    
   
   
       2 . The umbrella stand of  claim 1 , further comprising a crank, the crank being installed on the stand pole, where the second end of the rope is fastened on the crank.  
   
   
       3 . The umbrella stand of  claim 1 , further comprising: 
 an upper stationary pulley;    a lower stationary pulley; and    a central stationary pulley;    where the upper and lower pulleys are mounted at upper and lower ends of the suspending arm respectively,    where the central pulley is mounted at the top of the central rod, and    where the rope is wound on the upper, lower, and central pulleys.    
   
   
       4 . The umbrella stand of claims  1 ,  2 , or  3 , wherein the power supply is a battery installed in a base under the stand pole.  
   
   
       5 . The umbrella stand of  claim 4 , wherein the battery is a rechargeable battery.  
   
   
       6 . The umbrella stand of  claim 4 , wherein the battery is a solar battery.  
   
   
       7 . The umbrella stand of  claim 1 ,  2  or  3 , further comprising a remote controller and a signal receiver to actuate the electromotor.  
   
   
       8 . The umbrella stand of  claim 1 ,  2  or  3 , wherein the electric wire passes through in turn and hidden within the pipe of the thick rib, partial sector of suspending arm, pulling arm via a fixed seat on the top place of the stand pole, finally along the stand pole downwardly running to and connected with the electric adapter.  
   
   
       9 . The umbrella stand of  claim 1 ,  2  or  3 , characterized in that the electric motor is dual-direction rotatable motor.