Umbrella Having A Detachable Structure

Abstract

An umbrella includes a shank, a fixed ring mounted on the shank, a movable ring movably mounted on the shank, a plurality of mounting brackets secured on the fixed ring and the movable ring, a plurality of ribs each detachably connected with the respective mounting bracket on the fixed ring, a plurality of spreaders each detachably connected with the respective mounting bracket on the movable ring, and a plurality of locking mechanisms each mounted in the respective rib and the respective spreader and each detachably locked onto the respective mounting bracket to detachably lock each of the ribs and the spreaders onto the respective mounting bracket. Thus, each of the spreaders and the ribs can be detached from the respective mounting bracket, so that each of the spreaders and the ribs can be removed for replacement.

1 . An umbrella, comprising:
 a shank;   a fixed ring mounted on the shank;   a movable ring movably mounted on the shank;   a plurality of mounting brackets secured on the fixed ring and the movable ring respectively;   a plurality of ribs each detachably connected with a respective one of the mounting brackets on the fixed ring;   a plurality of spreaders each detachably connected with a respective one of the mounting brackets on the movable ring;   a plurality of locking mechanisms each mounted in a respective one of the ribs and the spreaders and each detachably locked onto a respective one of the mounting brackets to detachably lock each of the ribs and the spreaders onto the respective mounting bracket; wherein   the fixed ring has a periphery provided with a plurality of receiving grooves to receive the mounting brackets respectively;   the movable ring has a periphery provided with a plurality of receiving grooves to receive the mounting brackets respectively;   each of the mounting brackets is secured in the respective receiving groove of the fixed ring and the respective receiving groove of the movable ring by a plurality of locking screws;   each of the spreaders and the ribs is provided with a receiving chamber to receive a respective one of the locking mechanisms;   each of the mounting brackets is provided with at least one locking hole;   each of the locking mechanisms includes:   at least one locking stub movably mounted in the receiving chamber of the respective spreader and the respective rib and detachably locked in the locking hole of the respective mounting bracket to detachably lock the respective spreader and the respective rib onto the respective mounting bracket;   at least one elastic member mounted in the receiving chamber of the respective spreader and the respective rib and pressing the locking stub to push the locking stub outwardly from the locking hole of the respective mounting bracket;   the locking stub of each of the locking mechanisms functions as a pivot fulcrum of each of the spreaders and the ribs relative to the respective mounting bracket;   each of the locking mechanisms further includes:   at least one housing secured in the receiving chamber of the respective spreader and the respective rib to receive the locking stub and the elastic member;   the locking stub of each of the locking mechanisms has a first end provided with an enlarged limit plate movably mounted in the housing and movable to abut a peripheral wall of the housing to limit the locking stub of each of the locking mechanisms on the housing;   the locking stub of each of the locking mechanisms has a second end provided with an arcuate guide portion to guide movement of the locking stub in the locking hole of the respective mounting bracket;   each of the locking mechanisms further includes:   at least one fixing plate secured in the housing and abutting the elastic member;   the elastic member of each of the locking mechanisms is biased between the fixing plate and the limit plate of the locking stub;   each of the mounting brackets has an inner portion provided with a receiving chamber connected to the locking hole to receive a respective one of the ribs and the spreaders.   
   
   
       2 - 12 . (canceled) 
   
   
       13 . The umbrella of  claim 1 , wherein
 each of the ribs is pivotally connected with the respective mounting bracket on the fixed ring;   each of the ribs is pivotally connected with a respective one of the spreaders;   each of the spreaders is pivotally connected with the respective mounting bracket on the movable ring.   
   
   
       14 . The umbrella of  claim 1 , wherein
 each of the ribs is detachably attached to the fixed ring by the respective mounting bracket and the respective locking mechanism;   each of the spreaders is detachably attached to the movable ring by the respective mounting bracket and the respective locking mechanism.   
   
   
       15 . The umbrella of  claim 1 , wherein each of the mounting brackets has a substantially U-shaped profile with two triangular sidewalls. 
   
   
       16 . The umbrella of  claim 1 , wherein each of the mounting brackets has an elongate opening directed toward the respective rib and the respective spreader. 
   
   
       17 . The umbrella of  claim 1 , wherein when the locking stub of each of the locking mechanisms is pressed to retract into the locking hole of the respective mounting bracket, the arcuate guide portion of the locking stub is moved to abut an inner wall of the respective mounting bracket, the locking stub of each of the locking mechanisms is unlocked from the locking hole of the respective mounting bracket, and each of the spreaders and the ribs is unlocked from the respective mounting bracket. 
   
   
       18 . The umbrella of  claim 17 , wherein when each of the spreaders and the ribs is pulled outwardly relative to the respective mounting bracket, the locking stub of each of the locking mechanisms is detached from the locking hole of the respective mounting bracket by guidance of the arcuate guide portion of the locking stub and is retracted into and moved in the receiving chamber of the respective mounting bracket, so that each of the spreaders and the ribs can be moved outwardly and removed from the respective mounting bracket. 
   
   
       19 . The umbrella of  claim 1 , wherein
 each of the locking mechanisms is movable in a respective one of the ribs and the spreaders;   each of the locking mechanisms is fully hidden in a respective one of the ribs and the spreaders.   
   
   
       20 . The umbrella of  claim 1 , wherein
 each of the receiving grooves of the fixed ring extends through a whole length of the fixed ring;   each of the receiving grooves of the movable ring extends through a whole length of the movable ring.