Suction nozzle with rotary brush for vacuum cleaner

• US 5,101,534 A
• Filed: 02/28/1991
• Issued: 04/07/1992
• Est. Priority Date: 04/17/1989
• 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:
  US07/662,363
• Time in Patent Office: 404 Days
• Field of Search: 15/377, 15/401, 15/420
• US Class Current: 15/377
• 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; and

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 towards 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;

wherein said 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 a 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;

wherein when said suction force is applied to said suction opening, said suction force causes said front side flexible member to bend toward said suction opening causing said portion of said front side flexible member which extends beyond said distal end of said suction guide wall to cover a part of said suction opening thereby causing said suction force to increase;

wherein small wheels are arranged at portions which are at said bottom face of said suction nozzle main body and positioned at outside portions outside both ends of said front side flexible member; and

wherein a plurality of opening grooves are provided on said front side flexible member.

2. 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; and

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 and provides a plurality of opening grooves, 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 and a portion of said front side flexible member extends beyond said distal end of said suction guide wall; and

wherein, when said flexible front side member bends along said suction guide wall, a part of said suction opening of said suction nozzle main body is covered by said portion of said front side flexible member which extends beyond said distal lower end of said suction guide wall.