Telescopic foldable fan

Abstract

The present application relates to a telescopic foldable fan, including a base; an upright pole, with one end rotatably connected to the base; a fan head, connected to one end of the upright pole departing from the base; and a locking sleeve, sleeved outside of the upright pole, and configured to be slidable relative to the upright pole and be sleeved on an outer circumference of a connection portion between the upright pole and the base, so that the upright pole is kept relatively perpendicular to a top surface of the base.

What is claimed is: 
     
         1 . A telescopic foldable fan, comprising:
 a base;   an upright pole, with one end rotatably connected to the base;   a fan head, connected to a second end of the upright pole departing from the base; and   a locking sleeve, sleeved outside of the upright pole, and configured to be slidable relative to the upright pole and be sleeved on an outer circumference of a connection portion between the upright pole and the base.   
     
     
         2 . The telescopic foldable fan according to  claim 1 , wherein a fixing sleeve is provided between the locking sleeve and the upright pole, the fixing sleeve is fixed on an outer side of the upright pole, and an inner wall of the locking sleeve is configured to be attached to and slidable relative to an outer wall of the fixing sleeve; and
 the fixing sleeve is provided with an elastic piece protruding from the outer wall of the fixing sleeve in a direction towards the locking sleeve, and the elastic piece abuts against the inner wall of the locking sleeve.   
     
     
         3 . The telescopic foldable fan according to  claim 2 , wherein the inner wall of the locking sleeve is defined with a first limit groove configured to fit with the elastic piece. 
     
     
         4 . The telescopic foldable fan according to  claim 2 , wherein the inner wall of the locking sleeve is provided with a second limit groove configured to fit with the elastic piece. 
     
     
         5 . The telescopic foldable fan according to  claim 2 , wherein a sliding groove is defined on the outer wall of the fixing sleeve, the sliding groove extends along an axial direction of the fixing sleeve, a sliding block is provided on the inner wall of the locking sleeve, and the sliding block is configured to slide inside the sliding groove along with a sliding of the locking sleeve relative to the fixing sleeve. 
     
     
         6 . The telescopic foldable fan according to  claim 2 , wherein the upright pole comprises a plurality of first sleeves with successively reduced diameters, the first sleeves are sleeved on one another, one of an outer wall and an inner wall of the first sleeves is defined with a guide groove, the other of the outer wall and the inner wall of the first sleeves is provided with a protrusion, the protrusion of one first sleeve of the first sleeves is configured to be in sliding fit with the guide groove of an adjacent first sleeve of the first sleeves. 
     
     
         7 . The telescopic foldable fan according to  claim 6 , wherein a first sleeve of the first sleeves with a smallest diameter is a first connecting sleeve, and the first connecting sleeve is rotatably connected to the fan head; and
 a first sleeve of the first sleeves with a largest diameter is a second connecting sleeve and is rotatably connected to the base, and the fixing sleeve is sleeved outside the second connecting sleeve.   
     
     
         8 . The telescopic foldable fan according to  claim 6 , wherein one end of the one first sleeve is fixedly sleeved with an auxiliary connecting sleeve, a mating portion is formed on a side wall of the auxiliary connecting sleeve, and the mating portion of one first sleeve is matched with the protrusion or the guide groove on a side wall of the adjacent first sleeve. 
     
     
         9 . The telescopic foldable fan according to  claim 6 , wherein the locking sleeve has an oblong cross section. 
     
     
         10 . The telescopic foldable fan according to  claim 9 , wherein a support fin is rotatably connected to a curved surface of an outer wall of the locking sleeve, and the support fin is configured to support the fan head when the fan head rotates to a direction parallel to a top surface of the base.