Suction nozzle with rotary brush for vacuum cleaner

• US 5,054,156 A
• Filed: 04/17/1989
• Issued: 10/08/1991
• Est. Priority Date: 04/20/1988
• Status: Expired due to Fees

• Current Assignee: Hitachi, Ltd.
• Original Assignee: Hitachi, Ltd.
• Inventors: Satoh, Susumu, Sagawa, Koichi, Watanabe, Syuji
• Primary Examiner(s): MOORE, CHRISTOPHER K
• Application Number:
  US07/338,859
• Time in Patent Office: 904 Days
• Field of Search: 15/383, 15/377, 15/419, 15/420, 15/325, 15/401, 15/415 A
• US Class Current: 15/325
• CPC Class Codes: A47L 9/0411 driven by electric motor

Abstract

A front side flexible member is provided along the vicinity of an opening front edge of a suction opening of a suction nozzle main body and has a plurality of opening grooves. The flexible member is positioned at a dent wall of the suction nozzle main body. A suction guide wall is formed between the flexible member and the suction opening of the suction nozzle main body. The suction guide wall is positioned at a dent portion more than a bottom face of the suction nozzle main body. The large size solid dust at the corner portion is moved smoothly into the suction opening and the cleaning operation with the large size solid dust at the corner portion is carried out thoroughly.

Claims

1. A suction nozzle with a rotary brush for a vacuum cleaner comprising:

a suction nozzle main body having a front wall, bottom face, top face and rear portion, said suction nozzle main body being formed with a suction opening in said bottom face, said suction opening opens toward a floor surface, said suction opening having a width in left and right directions substantially equal to a width in left and right directions of said suction nozzle main body and having a suction force applied therein when said vacuum cleaner is operated;

a rotary brush disposed rotatively in said suction nozzle main body adjacent to said suction opening of said suction nozzle main body;

a front side flexible member mounted along a front edge of said suction opening of said suction nozzle main body; and

a bumper constituting a flexible material which covers said front wall of said suction nozzle main body, said bumper when receiving an outside force contacts said front side flexible member causing it to bend toward said suction opening;

wherein said front wall of said suction nozzle main body projects toward said floor surface and includes a suction guide wall which curves toward said suction opening, wherein a distal end of said suction guide wall extends to a position higher than said bottom face of said suction nozzle main body relative to said floor surface, said front side flexible member is attached to a portion of said front wall of said suction nozzle main body, and said suction guide wall projects from between said front side flexible member and said rotary brush;

wherein said suction guide wall extends toward said floor surface and has a width substantially equal to said width of said suction opening of said suction nozzle main body;

wherein, said suction guide wall is positioned apart from said front side flexible member so as to form a space between a front surface of said suction guide wall and a rear surface of said front side flexible member;

wherein a portion of said front side flexible member extends beyond said distal end of said suction guide wall; and

wherein when said bumper receives an outside force, said bumper contacts said front side flexible member causing it to bend toward said suction opening thereby causing a space between said floor surface and said front side flexible member to be increased.

2. A suction nozzle with a rotary brush for a vacuum cleaner according to claim 1, wherein an inner wall of a lower end of said bumper is formed closely to of said portion of said front wall which has attached thereto said front side flexible member.

3. A suction nozzle with a rotary brush for a vacuum cleaner comprising:

a suction nozzle main body having a front wall, bottom face, top face and rear portion, said suction nozzle main body being formed with a suction opening in said bottom face, said suction opening opens toward a floor surface, said suction opening having a width in left and right directions substantially equal to a width in left and right directions of said suction nozzle main body and having a suction force applied therein when said vacuum cleaning is operated;

a rotary brush disposed rotatively in said suction nozzle main body adjacent to said suction opening of said suction nozzle main body;

a front side flexible member mounted along a front edge of said suction opening of said suction nozzle main body;

wherein said front wall of said suction nozzle main body projects toward said floor surface and includes a suction guide wall which curves toward said suction opening, wherein a distal end of said suction guide wall extends to a position higher than a bottom face of said suction nozzle main body relative to said floor surface, said front side flexible member is attached to a portion of said front wall of said suction nozzle main body, sad suction guide wall projects from between said front side flexible member and said rotary brush, said suction guide wall extends toward said floor surface and has a width substantially equal to said width of said suction opening of said suction nozzle main body;

wherein, said suction guide wall is positioned apart from said front side flexible member so as to form a space between a front surface of said suction guide and a rear surface of said front side flexible member, and a plurality of opening grooves are provided on said front side flexible member;

wherein a portion of said front side flexible member extends beyond said distal end of said suction guide wall; and

wherein an opening area of a first opening groove is smaller than an opening area of an adjacent opening groove, said adjacent opening groove being on a side of said first opening groove toward a center of side front said flexible member, whereby an opening area of each of said opening grooves is set in proportion to its position in a direction of both ends of said front side flexible member from said center.

4. A suction nozzle with a rotary brush for a vacuum cleaner according to claim 3, wherein each of said opening grooves is a notched groove.

5. A suction nozzle with a rotary brush for a vacuum cleaner comprising:

a suction nozzle main body having a front wall, bottom face, top face and rear portion, said suction nozzle main body being formed with a suction opening in said bottom face, said suction opening opens toward a floor surface, said suction opening having a width in left and right directions of said suction nozzle main width of left and right directions substantially equal to a body and having a suction force applied therein when said vacuum cleaner is operated;

a rotary brush disposed rotatively in said suction nozzle main body adjacent to said suction opening of said suction nozzle main body;

an electric motor for driving said rotary brush;

a front side flexible member mounted along a front edge of said suction opening of said suction nozzle main body;

a rear side flexible member mounted along a rear edge of said suction opening of said nozzle main body; and

a bumper constituting a flexible material which covers said front wall of said suction nozzle main body, said bumper when receiving an outside force contacts said front side flexible member causing it to bend toward said suction opening;

wherein, said front wall of said suction nozzle main body projects toward said floor surface and includes a suction guide wall which curves toward said suction opening, wherein a distal end of said suction guide walls extends to a position higher than a bottom face of said suction nozzle main body relative to said floor surface, said front side flexible member includes a plurality of opening grooves and is attached to a portion of said front wall of said suction nozzle main body; and

said suction guide wall projects from between said front side flexible member and said rotary brush;

wherein, said suction guide wall extends toward said floor surface and has a width substantially equal to said width of said suction opening of said suction nozzle main body;

wherein, said suction guide wall is positioned apart from said front side flexible member so as to form a space between a front surface of said suction guide wall and a rear surface of said front side flexible member;

wherein a portion of said front side flexible member extends beyond said distal end of said suction guide wall; and

wherein, when said bumper receives an outside force, said bumper contacts said front side flexible member causing it to bend toward said suction opening thereby causing a space between said floor surface and said front side flexible member to be increased.

6. A suction nozzle with a rotary brush for a vacuum cleaner comprising:

a suction nozzle main body being formed with a suction opening which opens toward a floor surface;

a rotary brush being disposed rotatively in said suction nozzle main body adjacent said suction opening; and

an electric motor for driving said rotary brush;

wherein a casing having a suction passage is provided at a central portion of a rear portion of said suction nozzle main body, said casing being mounted to rotate in upper and lower directions, a curved turntable coupling is connected to said casing for movement in right and left directions, a protection cover is disposed on an outside of said curved turntable coupling, and an electric power supply wiring is led to said electric motor of said rotary brush from a vacuum cleaner main body along a hose and an extension pipe and is led into said suction nozzle main body from a side of said casing by passing between said curved turntable coupling and said protection cover in a mid portion of; and

wherein, said electric power supply wiring is slackened in said protection cover and is set so as to move freely with said curved turntable coupling.