JPH05137678A - Suction port of vacuum cleaner - Google Patents

Abstract

PURPOSE:To prevent damages to floors and tatami mats while achieving smooth suction of large dirts by moving a rotary brush upward with an operating body through a shaft part to expand an interval between the rotary brush and the rim of a dust suction opening when the floors and the tatami mats are cleaned up. CONSTITUTION:When floors and tatami mats are cleaned up, an operating piece 15 is moved to the side of a suction port body 1. As a result, a rib 17 of the operating piece 15 moves along a hole 18 of a connecting rod so that an operation body 12 of the connecting rod advances and hence, a shaft part 10 moves above a bearing part 11, which makes a rotary brush stand by above a dust suction opening 6. At the same time, a protrusion (not shown) of the connecting rod separates from a working piece to turn OFF a control switch, putting the motor to a stop. As a result, the expansion of an interval A between the rotary brush (not shown) and a rim 23 of the dust suction opening 6 makes even large dirts hard to catch on the rotary brush thereby achieving a smooth cleaning work. There is no contact of the rotary brush with the floor and tatami mat thereby enabling the prevention of damages to them.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a suction port of a vacuum cleaner, and more particularly to a suction port having a rotating brush.

[0002]

2. Description of the Related Art Conventionally, a suction port provided with a rotary brush of this kind is disclosed in Japanese Examined Patent Publication No. 2-1146 (A47L9 / 04).
Etc. In this kind of suction port, when cleaning the carpet, it is used by rotating the rotating brush, but when cleaning the floor or tatami mat, in order to prevent the surface to be cleaned from being scratched by the rotating brush, The rotating brush is stopped and cleaned. However, when the rotating brush is stopped, the rotating brush facing the dust suction opening becomes an obstacle, and there is a fear that large dust is caught between the opening edge of the dust suction opening and the rotating brush and cannot absorb the dust. It was

[0003]

SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned drawbacks, and provides a suction port of an electric vacuum cleaner which does not obstruct the rotary brush even when the rotary brush is stopped and can absorb large dust. Is an issue.

[0004]

According to the present invention, a rotating brush which is rotated by a drive source and faces a dust suction opening formed on a lower surface of a suction port body, and a shaft portion of the rotating brush is vertically movable. It is characterized by comprising a bearing portion for supporting and an operating body for moving the shaft portion up and down.

Further, according to the present invention, an electric motor, a rotary brush provided to face a dust suction opening formed on a lower surface of a suction port body rotated by the electric motor, and a shaft portion of the rotary brush are vertically movably supported. It is characterized in that it comprises a bearing portion, an operating body for moving the shaft portion up and down, and a switch for controlling the input of the electric motor, and the switch is controlled in conjunction with the operation of the operating body.

[0006]

According to the first aspect of the present invention, since the rotary brush provided facing the dust suction opening formed on the lower surface of the suction port main body moves up and down by the operation of the operating body, the rotary brush is stopped to perform cleaning. In this case, by moving the rotary brush upward, the gap between the opening edge and the rotary brush is widened, and large dust can pass through.

According to the second aspect of the present invention, since the electric motor for driving the rotary brush is controlled in association with the vertical movement operation of the rotary brush, cleaning of the velvet and floor / tatami etc. can be performed by one operation. You can switch between cleaning.

[0008]

Embodiments of the present invention will be described in detail below with reference to the drawings.

Reference numeral 1 denotes a suction port main body, which is a lower case 2, an upper case 3, a brush chamber lid 4 which is detachably supported by the suction port main body, and is rotatably supported by the suction port main body. In addition, an outer shell is constituted by the connection pipe 5 connected to the electric vacuum cleaner via a hose (not shown). Reference numeral 6 denotes a dust suction opening formed in the lower case 2, and a rotating brush 9 facing the dust suction opening 6 and rotated by a motor 7 via a belt 8.
The shaft portion 10 is supported by the bearing portion 11 so as to be vertically slidable.

The bearing portion 11 is formed in a U shape having an open upper portion, and is provided on the left and right side walls with the dust suction opening 6 formed in the lower case 2 interposed therebetween. Reference numeral 12 denotes an operating body, the tip of which is located below the shaft portion 10 supported by the bearing portion 11 and an inclined surface 13 is formed at the rear portion thereof. Further, the left and right operating bodies 12 are integrated by a connecting rod 14. Are linked together. 15
Is an operation piece, and by moving the handle portion 16 to the left and right, the rib 17 integrally provided on the operation piece 15 is connected to the connecting rod 1.
The operation body 12 is configured to move in the front-rear direction by moving along the hole 18 formed in 4. Reference numeral 19 is a spring for urging the shaft portion 10 downward, which is a brush 9 which constantly rotates.
Are provided so as to face the dust suction opening 6.

Reference numeral 20 denotes a control switch for the electric motor 7, which is a projection 2 provided on the connecting rod 14 as the connecting rod 14 moves back and forth.
1 is brought into contact with and separated from the operating piece 22, and the electric motor 7 is turned on and off.

Next, the operation of this embodiment having the above configuration will be described. First, when cleaning the carpet, the operation piece 15 is moved toward the center of the suction port body 1 as shown in FIG. At this time, the ribs 17 provided on the operation piece 15 move along the holes 18 of the connecting rod 14, the connecting rod 14 is pulled rearward, and the operating bodies 12 provided at both ends of the connecting rod 14 are shown in FIGS. As shown in Fig. 1, it descends rearward, resulting in shank 1
0 moves below the bearing portion 11 so that the rotating brush 9 faces the dust suction opening 6. When the carpet is cleaned in this state, the rotating brush 9 can effectively come into contact with the surface of the carpet and scrape out dust and dirt to be sucked.

On the other hand, when cleaning the floor or tatami mat, the operation piece 15 is moved to the side of the suction port body 1 as shown in FIG. At this time, the rib 17 provided on the operation piece 15 moves along the hole 18 of the connecting rod 14, the connecting rod 14 is pushed forward, and the operating bodies 12 provided at both ends of the connecting rod 14 are moved to the position shown in FIG. As a result, the shaft portion 10 moves above the bearing portion 11 and the rotating brush 9 retracts above the dust suction opening 6. At this time, at the same time, the protrusion 21 of the connecting rod 14 causes the operating piece 2 to
2, the control switch 20 is turned off, and as a result, the electric motor 7 is also stopped. Therefore, when cleaning the floor or tatami mat, the distance between the rotary brush 9 and the edge 23 of the dust suction opening 6 is A in FIG. 1, which is larger than the distance B in FIG. 2 when cleaning the carpet. And, even large dust is a rotating brush 9
It is hard to get caught in and can be cleaned smoothly.

In this embodiment, the rotary brush 9 is turned on / off by the control switch 20, but the main body of the vacuum cleaner (Fig. Although it may be separately provided (not shown), in this case, the control of the rotary brush 9 must be separately performed. Further, the rotating brush 9 does not necessarily have to be turned off, and may be kept on, or the number of rotations may be controlled to be large or small.

[0015]

According to the suction port of the vacuum cleaner of the present invention,
When cleaning the floor or tatami mat, the rotary brush can be moved upward, the distance between the rotary brush and the opening edge of the dust suction opening is increased, and large dust is not caught on the rotary brush. Furthermore, when cleaning the floor or tatami mat, the rotating brush does not contact the floor surface or tatami mat surface, so the floor surface and tatami mat surface are not damaged.

Further, since the rotation control of the electric motor for driving the rotary brush is performed in association with the vertical movement of the rotary brush,
There is no wasteful rotation of the rotating brush, and power consumption can be reduced.

[Brief description of drawings]

FIG. 1 is a sectional view of a main part of a suction port of an electric vacuum cleaner showing an embodiment of the present invention.

FIG. 2 is a sectional view of the same main part.

FIG. 3 is a central sectional view of the same.

FIG. 4 is a top view of the same case with the case and the brush chamber lid removed.

FIG. 5 is a top view of the same.

FIG. 6 is a perspective view of the same.

[Explanation of symbols]

 1 Suction Port Main Body 6 Dust Suction Opening 7 Electric Motor (Drive Source) 9 Rotating Brush 10 Shaft Part 11 Bearing Part 12 Operating Body 15 Operating Piece 20 Control Switch (Switch)

Claims (2)

[Claims] 1. A rotary brush which is rotated by a drive source and faces a dust suction opening formed on a lower surface of a suction port body, a bearing portion which supports a shaft portion of the rotary brush so as to be vertically movable, and the shaft. The suction port of the vacuum cleaner, which consists of an operating unit that moves the unit up and down. 2. An electric motor, a rotary brush provided to face a dust suction opening formed on a lower surface of a suction port body rotated by the electric motor, and a bearing portion for supporting a shaft portion of the rotary brush so as to be vertically movable. A suction unit for an electric vacuum cleaner, comprising: an operating body that moves the shaft portion up and down; and a switch that controls input of the electric motor, and the switch is controlled in association with an operation of the operating body. mouth.