Diffuser

Abstract

A diffuser for a hair dryer includes a main body case, an adjusting part rotatably mounted at the main body case, and a comb-tooth part mounted at the adjusting part and including a plurality of comb teeth. A rotation of the adjusting part relative to the main body case drives the plurality of comb teeth to move telescopically relative to the main body case, to adjust a length of a portion of each of the plurality of comb teeth protruding out of the main body case.

What is claimed is: 
     
         1 . A diffuser comprising:
 a main body case;   an adjusting part rotatably mounted at the main body case; and   a comb-tooth part mounted at the adjusting part and including a plurality of comb teeth, wherein a rotation of the adjusting part relative to the main body case drives the plurality of comb teeth to move telescopically relative to the main body case, to adjust a length of a portion of each of the plurality of comb teeth protruding out of the main body case.   
     
     
         2 . The diffuser of  claim 1 , wherein the comb-tooth part further includes a supporting ring connected to the adjusting part and telescopically mounted to the main body case, the plurality of comb teeth being disposed at the supporting ring. 
     
     
         3 . The diffuser of  claim 1 , wherein main body case includes:
 a top cover and a bottom case forming a space accommodating the adjusting part and at least a part of the comb-tooth part.   
     
     
         4 . The diffuser of  claim 3 , wherein the rotation of the adjusting part relative to the main body case drives the plurality of comb teeth to protrude out of or retract to the top cover. 
     
     
         5 . The diffuser of  claim 3 , wherein the top cover includes a plurality of avoiding holes having one-to-one correspondence with the plurality of comb teeth. 
     
     
         6 . The diffuser of  claim 5 , wherein the plurality of comb teeth are telescopically movable in the plurality of avoiding holes. 
     
     
         7 . The diffuser of  claim 5 , wherein the top cover includes:
 a ventilation screen includes the plurality of avoiding holes; and   a plurality of fixed comb teeth fixedly mounted at the ventilation screen.   
     
     
         8 . The diffuser of  claim 1 , wherein:
 the adjusting part includes a plurality of limiting grooves arranged in an array along a circumferential direction of main body case, the plurality of limiting grooves being corresponding to a plurality of different lengths of the portion of each of the plurality of comb teeth protruding out of the main body case, respectively; and   the main body case includes a limiting structure configured to be inserted into one of the plurality of limiting grooves to fix a corresponding length of the portion of each of the plurality of comb teeth protruding out of the main body case.   
     
     
         9 . The diffuser of  claim 8 , wherein the limiting structure includes:
 a fixing sleeve;   an elastic column configured to be inserted into one of the plurality of limiting grooves; and   a spring accommodate in the fixing sleeve, one end of the spring being connected to the elastic column and another end of the spring being connected to the elastic column.   
     
     
         10 . The diffuser of  claim 1 , wherein:
 the main body case includes an adjusting window extending along a circumferential direction of main body case; and   the adjusting part includes an adjusting level passing through the adjusting window and being movable along the adjusting window, wherein a movement of the adjusting level along the adjusting window drives the adjusting part to rotate relative to the main body case.   
     
     
         11 . A hair dryer assembly comprising:
 a hair dryer; and   a diffuser mounted at the hair dryer, the diffuser including:
 a main body case; 
 an adjusting part rotatably mounted at the main body case; and 
 a comb-tooth part mounted at the adjusting part and including a plurality of comb teeth, wherein a rotation of the adjusting part relative to the main body case drives the plurality of comb teeth to move telescopically relative to the main body case, to adjust a length of a portion of each of the plurality of comb teeth protruding out of the main body case. 
   
     
     
         12 . The hair dryer assembly of  claim 11 , wherein the comb-tooth part further includes a supporting ring connected to the adjusting part and telescopically mounted to the main body case, the plurality of comb teeth being disposed at the supporting ring. 
     
     
         13 . The hair dryer assembly of  claim 11 , wherein main body case includes:
 a top cover and a bottom case forming a space accommodating the adjusting part and at least a part of the comb-tooth part.   
     
     
         14 . The hair dryer assembly of  claim 13 , wherein the rotation of the adjusting part relative to the main body case drives the plurality of comb teeth to protrude out of or retract to the top cover. 
     
     
         15 . The hair dryer assembly of  claim 13 , wherein the top cover includes a plurality of avoiding holes having one-to-one correspondence with the plurality of comb teeth. 
     
     
         16 . The hair dryer assembly of  claim 15 , wherein the plurality of comb teeth are telescopically movable in the plurality of avoiding holes. 
     
     
         17 . The hair dryer assembly of  claim 15 , wherein the top cover includes:
 a ventilation screen includes the plurality of avoiding holes; and   a plurality of fixed comb teeth fixedly mounted at the ventilation screen.   
     
     
         18 . The hair dryer assembly of  claim 11 , wherein:
 the adjusting part includes a plurality of limiting grooves arranged in an array along a circumferential direction of main body case, the plurality of limiting grooves being corresponding to a plurality of different lengths of the portion of each of the plurality of comb teeth protruding out of the main body case, respectively; and   the main body case includes a limiting structure configured to be inserted into one of the plurality of limiting grooves to fix a corresponding length of the portion of each of the plurality of comb teeth protruding out of the main body case.   
     
     
         19 . The hair dryer assembly of  claim 18 , wherein the limiting structure includes:
 a fixing sleeve;   an elastic column configured to be inserted into one of the plurality of limiting grooves; and   a spring accommodate in the fixing sleeve, one end of the spring being connected to the elastic column and another end of the spring being connected to the elastic column.   
     
     
         20 . The hair dryer assembly of  claim 11 , wherein:
 the main body case includes an adjusting window extending along a circumferential direction of main body case; and   the adjusting part includes an adjusting level passing through the adjusting window and being movable along the adjusting window, wherein a movement of the adjusting level along the adjusting window drives the adjusting part to rotate relative to the main body case.