Dust-collecting device for vacuum cleaner and upright type vacuum cleaner

• US 6,192,550 B1
• Filed: 01/28/2000
• Issued: 02/27/2001
• Est. Priority Date: 01/29/1999
• Status: Expired due to Term

• Current Assignee: Sanyo Electric Company Limited (Panasonic Holdings Corporation)
• Original Assignee: Sanyo Electric Company Limited (Panasonic Holdings Corporation)
• Inventors: Ueyama, Syuzou, Takahashi, Nobuaki, Hamada, Atsuo, Okuda, Atsushi, Yoshimi, Kazuyoshi, Kamatani, Kazumasa, Suetsugu, Naoki, Sakata, Souji
• Primary Examiner(s): MOORE, CHRISTOPHER K
• Application Number:
  US09/493,068
• Time in Patent Office: 396 Days
• Field of Search: 153/52, 552/95, 552/99, 553/00, 553/05
• US Class Current: 15/352
• CPC Class Codes: A47L 5/28 Suction cleaners with handles and nozzles fixed on the casings, e.g. wheeled suction cleaners with steering handle A47L5/24 takes precedence
• CPC Class Codes: A47L 9/108 Dust compression means
• CPC Class Codes: A47L 9/1608 Cyclonic chamber constructions
• CPC Class Codes: A47L 9/1666 with filtering means
• CPC Class Codes: A47L 9/1683 Dust collecting chambers; Dust collecting receptacles
• CPC Class Codes: A47L 9/1691 Mounting or coupling means for cyclonic chamber or dust receptacles
• CPC Class Codes: A47L 9/20 Means for cleaning filters

Abstract

A dust-collecting device for a vacuum cleaner comprising a dust-collecting case which is fitted into a suction path extending from a suction nozzle to a motor fan and from which accumulated dust can be discharged by opening a bottom lid of the dust-collecting case, and a cylindrical filter fitted into the dust-collecting case. The filter is arranged to be rotatable, a spiral rib is formed at an outer periphery of the filter, and the device is equipped with a rotating means for rotating the filter. Dust which cannot be discharge by its own weight since it is in a compressed state can be pushed out through the spiral rib formed on the outer periphery of the filter by rotating the filter, so that dust accumulated within the dust-collecting case in a compressed state can be easily discharged.

Claims

1. A dust-collecting device for a vacuum cleaner comprising a dust-collecting case which is fitted into a suction path extending from a suction nozzle to a motor fan in a freely attachable and detachable manner and from which accumulated dust can be discharged by opening a bottom lid of the dust-collecting case, and a cylindrical filter fitted into the dust-collecting case for filtering dust contained in air which is taken in into the dust-collecting case,

wherein the filter is arranged to be rotatable, a spiral rib is formed at an outer periphery of the filter, and the device is equipped with a rotating means for rotating the filter.

7. The dust-collecting device of claim 1, wherein the device is provided with a grip, and a fulcrum for opening and closing the bottom lid is provided on a same side as that of the grip.

8. The dust-collecting device of claim 1, wherein the device is provided with a grip, and a fulcrum for opening and closing the bottom lid is provided on an opposing side as that of the grip.

2. A dust-collecting device for a vacuum cleaner comprising a dust-collecting case which is fitted into a suction path extending from a suction nozzle to a motor fan in a freely attachable and detachable manner and from which accumulated dust can be discharged by opening a bottom lid of the dust-collecting case, a cylindrical pre-filter fitted into the dust-collecting case for filtering coarse dust contained in air which is taken in into the dust-collecting case, and a cylindrical main filter fitted into the pre-filter for filtering minute dust contained in air which has been filtered by the pre-filter for eliminating coarse dust,

wherein the pre-filter is arranged to be rotatable, a spiral rib is formed at an outer periphery of the pre-filter, and the device is equipped with a rotating means for rotating the pre-filter.

3. The dust-collecting device of claim 2, wherein a filter portion of the pre-filter is designed to be located in a lower portion in the dust-collecting case.

4. The dust-collecting device of claim 2, wherein the pre-filter is provided with elastic protrusions which hit against the main filter through rotation thereof to make the main filter oscillate.

5. The dust-collecting device of claim 2, wherein the rotating means includes a handle and a gear mechanism for connecting a rotating axis of the handle and an attaching plate for the pre-filter.

6. The dust-collecting device of claim 2, wherein the rotating means includes a slide lever and a gear mechanism which is connected to the slide lever in case the slide lever is slid in either direction for rotating the pre-filter in a specified direction.

9. An upright type vacuum cleaner with a dust-collecting device for a vacuum cleaner being fitted to a main body of the upright type vacuum cleaner in a freely attachable and detachable manner, the dust-collecting device comprising a dust-collecting case which is fitted into a suction path extending from a suction nozzle to a motor fan in a freely attachable and detachable manner and from which accumulated dust can be discharged by opening a bottom lid of the dust-collecting case, and a cylindrical filter fitted into the dust-collecting case for filtering dust contained in air which is taken in into the dust-collecting case, in which the filter is arranged to be rotatable, a spiral rib is formed at an outer periphery of the filter, and the device is equipped with a rotating means for rotating the filter,

wherein the vacuum cleaner comprises a handle for operating the main body extending upward from a front surface side of the main body of the vacuum cleaner, the dust-collecting device is fitted to the front surface side of the main body of the vacuum cleaner in a freely attachable and detachable manner, and a grip of the dust-collecting device is formed to extend downward from the handle for operating the main body in a successive manner.