Back to results
US 12,766,453 B2Granted
Cyclonic, dust-collecting unit and vacuum cleaner
AssigneeMakita Corporation
InventorsKosuke Komiya, Junichi Iwakami, Kentaro Nakahara
Life of this patent
Estimating the term…
Abstract
A cyclonic, dust-collecting unit includes: one or more air swirling members, which swirl(s) air; a dust cap, into which air that has passed through the swirling member(s) flows; and a filter unit, through which air that flows out of the dust cap passes. The filter unit includes: a prefilter; a sound-absorbing member, through which air that has passed through the prefilter flows; and a post filter, through which air that has passed through the sound-absorbing member flows.
Claims19
A cyclonic, dust-collecting unit comprising:
- one or more air swirling members, which swirl(s) air;
- a dust cap, into which air that has passed through the swirling member(s) flows;
- and
- a filter unit, through which air that flows out of the dust cap passes;
- wherein:
- the filter unit comprises:
- a prefilter;
- a sound-absorbing member, through which air that has passed through the prefilter flows;
- and a post filter comprising a filter-tube part, a filter-cover part that covers an opening at a front-end portion of the filter-tube part, and one or more filter-hook parts provided on and extending forward from a front surface of the filter-cover part in the axial direction, through which air that has passed through the sound-absorbing member flows;
- the sound-absorbing member is sandwiched between the prefilter and the post filter in a radial direction of the filter-tube part;
- the prefilter comprises a filter-coupling part provided on a front-end portion of the prefilter in the axial direction and on which the filter-hook part(s) is (are) hooked;
- the prefilter and the post filter are fixable to each other by hooking the filter-hook part(s) of the post filter onto the filter-coupling part of the prefilter;
- a rear-end portion of the post filter is located closer to the one or more swirling members than the front-end portion of the post filter;
- and
- the prefilter, the sound-absorbing member, and the post filter are separable from each other by detaching the filter-hook part(s) from the filter-coupling part.
12 more elements
A cyclonic, dust-collecting unit comprising:
- one or more air swirling members, which swirl(s) air;
- a dust cap, into which air that has passed through the swirling member(s) flows;
- and
- a filter unit, through which air that flows out of the dust cap passes;
- wherein:
- the filter unit comprises:
- a prefilter;
- a sound-absorbing member, through which air that has passed through the prefilter flows;
- and a post filter, through which air that has passed through the sound-absorbing member flows;
- the prefilter, the sound-absorbing member, and the post filter each have holes through which air passes;
- the size of the holes in the prefilter is smaller than the size of the holes in the sound-absorbing member;
- the size of the holes in the sound-absorbing member is smaller than the size of the holes in the post filter;
- the post filter comprises a filter-tube part and a filter-cover part covering an opening at a front-end portion of the filter-tube part;
- the sound-absorbing member is disposed around the filter-tube part;
- at least a portion of the prefilter is disposed around the sound-absorbing member;
- the post filter comprises one or more filter-hook parts provided on and protruding forward from a front surface of the filter-cover part in the axial direction;
- a rear-end portion of the post filter is located closer to the one or more swirling members than the front-end portion of the post filter;
- and
- the prefilter comprises a filter-coupling part provided on a front-end portion of the prefilter in the axial direction and on which the filter-hook part(s) is (are) hooked.
16 more elements
A cyclonic, dust-collecting unit comprising:
- one or more air swirling members, which swirl(s) air;
- a dust cap, into which air that has passed through the swirling member(s) flows;
- and
- a filter unit, through which air that flows out of the dust cap passes;
- wherein:
- the filter unit comprises:
- a prefilter;
- a sound-absorbing member, through which air that has passed through the prefilter flows;
- and a post filter comprising a filter-tube part and one or more filter-hook parts provided at one-end portion of the filter-tube part in the axial direction, through which air that has passed through the sound-absorbing member flows;
- the sound-absorbing member is disposed around the filter-tube part;
- at least a portion of the prefilter is disposed around the sound-absorbing member;
- the prefilter comprises a filter-coupling part provided on one-end portion of the prefilter in the axial direction and on which the filter-hook part(s) is hooked;
- the prefilter, the sound-absorbing member, and the post filter are separable from each other;
- the filter-hook part(s) is (are) snap-fit connected to the filter-coupling part;
- the one-end portion of the filter-tube part is a front-end portion of the post filter;
- the one-end portion of the filter-coupling part is a front-end portion of the prefilter;
- the filter-hook part(s) protrude(s) forward from a front surface of a filter-cover part;
- and
- a rear-end portion of the post filter is located closer to the one or more swirling members than the front-end portion of the post filter.
16 more elements
Dependencies are inferred from the claim text.