Electric vacuum cleaner

• US 20010023517A1
• Filed: 03/23/2001
• Published: 09/27/2001
• Est. Priority Date: 03/23/2000
• Status: Active Grant

• Current Assignee: Sharp Kabushiki Kaisha (Hon Hai Precision Industry Co., Ltd.)
• Original Assignee: Sharp Kabushiki Kaisha (Hon Hai Precision Industry Co., Ltd.)
• Inventors: Hayashi, Kazumasa, Inoue, Teruhisa, Onishi, Yuji, Hikida, Nobuharu, Nagai, Kiyomu
• Granted Patent: US 6,553,613 B2
• Time in Patent Office: Days
• US Class Current: 15/351
• CPC Class Codes: A47L 9/02 Nozzles suction nozzles for fluid transport B65G51/00
• CPC Class Codes: A47L 9/242 Hose or pipe couplings
• CPC Class Codes: A47L 9/327 for suction cleaners with hose between nozzle and casing

Abstract

An electric vacuum cleaner has a main body 1 incorporating an electric blower 2, a nozzle unit 6 having a nozzle, and a first and a second connection pipe 7 and 8 fitted between the main body 1 and the nozzle unit 6 so as to serve as part of the passage for a dust suction air flow generated by driving the electric blower 2. The first and second connection pipes 7 and 8 are rotatable, and support the main body 1 in a standing position.

Claims

1. An electric vacuum cleaner comprising an electric blower, a nozzle unit having a nozzle, and a dust suction duct fitted between the electric blower and the nozzle unit so as to serve as a passage for a dust suction air flow generated by driving the electric blower,

wherein the dust suction duct is bendable at some point along itself and can stand in an upright position by itself.

2. An electric vacuum cleaner as claimed in

claim 1

,

wherein the dust suction duct has a first dust suction duct of which one end is joined to the nozzle unit and a second dust suction duct that is rotatably joined to another end of the first dust suction duct.

3. An electric vacuum cleaner as claimed in

claim 2

,

wherein said one end of the first dust suction duct is rotatably joined to the nozzle unit.

4. An electric vacuum cleaner as claimed in

claim 2

, further comprising:

a locking mechanism that, when the first and second dust suction ducts come into a substantially straight state, locks the first and second dust suction ducts to keep them in said substantially straight state.

5. An electric vacuum cleaner as claimed in

claim 2

,

wherein the nozzle unit is removable integrally with the first and second dust suction ducts.

6. An electric vacuum cleaner as claimed in

claim 1

, further comprising:

a cyclone-type dust collector portion fitted at some point along the dust suction duct so as to separate dust sucked in through the nozzle unit by whirling around the dust suction air flow generated by driving the electric blower.

7. An electric vacuum cleaner as claimed in

claim 2

,

wherein the second dust suction duct is rotatable up to more than 90 degrees from a position in which the first and second dust suction ducts are in a substantially straight state.

8. An electric vacuum cleaner as claimed in

claim 2

, further comprising:

means for stopping the driving of the electric blower when, at a joint between the first and second dust suction ducts, the second dust suction duct is rotated to a predetermined rotation angle.

9. An electric vacuum cleaner as claimed in

claim 2

, further comprising:

a shock absorbing member fitted in a portion of the first dust suction duct at which the first dust suction duct makes contact with a floor surface.

10. An electric vacuum cleaner as claimed in

claim 2

, further comprising:

a caster fitted on the first dust suction duct so as to permit the nozzle unit to be moved around on a floor surface.