Cleaner

Abstract

A cleaner includes: a main body housing; a dust collecting housing detachably attached to the main body housing and having an air-intake port; a suction assembly housed in the main body housing and configured to generate a suction force; a first filter unit housed in the dust collecting housing and including a first filter to which air sucked through the air-intake port is supplied and a first support member supporting the first filter; a filter support mechanism configured to fix the first filter unit to the main body housing at a fixed position in a rotation direction when the first filter unit is rotated in a normal rotation direction with respect to the main body housing; and a reverse rotation limiting mechanism configured to restrict the first filter unit from being rotated beyond a limit angle from the fixed position in a reverse rotation direction.

What is claimed is: 
     
         1 . A cleaner comprising:
 a main body housing;   a dust collecting housing detachably attached to the main body housing and having an air-intake port;   a suction assembly housed in the main body housing and configured to generate a suction force to suck in dust with air through the air-intake port;   a first filter unit housed in the dust collecting housing, the first filter including a first filter to which air sucked through the air-intake port is supplied and a first support member that supports the first filter;   a filter support mechanism configured to fix the first filter unit to the main body housing at a fixed position in a rotation direction when the first filter unit is rotated in a normal rotation direction with respect to the main body housing; and   a reverse rotation limiting mechanism configured to restrict the first filter unit from being rotated beyond a limit angle from the fixed position in a reverse rotation direction.   
     
     
         2 . The cleaner according to  claim 1 , wherein
 the filter support mechanism releases the first filter unit from the main body housing when the first filter unit is rotated by a release angle from the fixed position in the reverse rotation direction.   
     
     
         3 . The cleaner according to  claim 2 , wherein
 the limit angle includes the release angle.   
     
     
         4 . The cleaner according to  claim 1 , wherein
 the first support member includes:   a first rear support part that supports a rear end portion of the first filter; and   a collar part protruding radially outward from the first rear support part,   the main body housing includes:   a front plate part disposed on a front portion of the main body housing and having a suction port;   an inner cylindrical part disposed so as to surround the suction port;   an outer cylindrical part disposed so as to surround the inner cylindrical part; and   an engagement part protruding radially inward from an inner surface of the outer cylindrical part,   the inner cylindrical part is surrounded by the first rear support part,   the outer cylindrical part is surrounded by a rear end portion of the dust collecting housing,   a support groove is provided between a rear surface of the engagement part and a front surface of the front plate part,   the filter support mechanism includes the collar part, and   the first filter unit is fixed at the fixed position when the first filter unit is rotated in the normal rotation direction with respect to the main body housing and the collar part is inserted into the support groove.   
     
     
         5 . The cleaner according to  claim 4 , wherein
 the reverse rotation limiting mechanism includes at least a portion of the first rear support part that makes contact with the engagement part when the first filter unit is in a state of being rotated by the limit angle from the fixed position in the reverse rotation direction.   
     
     
         6 . The cleaner according to  claim 4 , further comprising
 a normal rotation limiting mechanism configured to restrict rotation of the first filter unit from the fixed position in the normal rotation direction.   
     
     
         7 . The cleaner according to  claim 6 , wherein
 the normal rotation limiting mechanism includes at least a portion of the first rear support part that makes contact with the engagement part when the first filter unit is in a state of being located at the fixed position.   
     
     
         8 . The cleaner according to  claim 5 , wherein
 the first rear support part includes:   a pair of straight parts arranged at point-symmetrical positions with respect to a rotation axis of the first filter unit and parallel to each other; and   a pair of arc parts arranged adjacent to the straight parts in the rotation direction,   a pair of the collar parts is provided so as to be arranged adjacent to the arc parts in the rotation direction,   a pair of the engagement parts is provided in the rotation direction, and   the collar parts are inserted into the support groove when the first filter unit is rotated in the normal rotation direction after the first rear support part is inserted into the outer cylindrical part such that the straight parts and the engagement parts coincide in position with each other.   
     
     
         9 . The cleaner according to  claim 8 , wherein
 the reverse rotation limiting mechanism includes the straight parts that make contact with the engagement part when the first filter unit is in a state of being rotated by the limit angle from the fixed position in the reverse rotation direction.   
     
     
         10 . The cleaner according to  claim 6 , wherein
 the first rear support part includes an inclined part disposed forward of the collar part and inclined radially inward in the normal rotation direction, and   the normal rotation limiting mechanism includes the inclined part that makes contact with the engagement part when the first filter unit is in a state of being disposed at the fixed position.   
     
     
         11 . The cleaner according to  claim 4 , further comprising
 a second filter unit including a second filter to which air that has passed through the first filter is supplied and a second support member that supports the second filter, wherein   the second filter unit is fixed to the first filter unit in a state where the second filter unit is disposed inside the first filter unit.   
     
     
         12 . The cleaner according to  claim 11 , wherein
 the second support member includes   a second rear support part that supports a rear end portion of the second filter,   the second rear support part includes a cylinder part and a plurality of protrusions protruding radially outward from the cylinder part, and   the second filter unit is fixed to the first filter unit with the protrusions fitting inside the first rear support part.   
     
     
         13 . The cleaner according to  claim 11 , wherein
 the second support member includes   a second rear support part that supports a rear end portion of the second filter,   the second rear support part includes a cylinder part and a flange part having an annular shape and protruding radially outward from the cylinder part, and   the second filter unit is fixed to the first filter unit with the flange part fitting inside the first rear support part.   
     
     
         14 . The cleaner according to  claim 12 , wherein
 the second rear support part includes an annular sealing part provided at a rear portion of the cylinder part, the annular sealing part making contact with the front surface of the front plate part.   
     
     
         15 . The cleaner according to  claim 11 , wherein
 the first support member includes a first front support part that supports a front end portion of the first filter,   the second support member includes a second front support part that supports a front end portion of the second filter, and   the second front support part is fixed to the first front support part in a state of being disposed inside the first front support part.   
     
     
         16 . The cleaner according to  claim 15 , wherein
 the first front support part includes an annular part surrounding the second front support part, and a plurality of projections projecting radially inward from an inner surface of the annular part, and   the second front support part is fixed to the first front support part with the second front support part fitting inside the plurality of projections.   
     
     
         17 . The cleaner according to  claim 11 , wherein
 the first filter unit is fixed to the main body housing in a state where the second filter unit is fixed to the first filter unit.   
     
     
         18 . The cleaner according to  claim 1 , further comprising
 a normal rotation limiting mechanism configured to restrict rotation of the first filter unit from the fixed position in the normal rotation direction.   
     
     
         19 . The cleaner according to  claim 4 , wherein
 a rear end portion of the first support member is elastically deformed so as to bend radially inward when the collar part is inserted into the support groove.   
     
     
         20 . The cleaner according to  claim 2 , wherein
 the release angle is set to about 90 degrees, and   the limit angle is set to about 90 degrees or more.