JPH04288110A - Suction instrument for floor - Google Patents

Abstract

PURPOSE:To save the labor of cleaning by moving a title instrument 3 back and forth, and to right and left with small force. CONSTITUTION:A suction instrument for floor 3 is provided with a backward- and-forward driving wheel 25 which is rotated backward and forward by a motor 16 and a rightward-and-leftward driving wheel 22 which is rotated rightward and leftward by a motor 15. The proper driving wheel, detecting the direction of the suction instrument's travelling, is driven to rotate.

Description

[Detailed description of the invention]

0001

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a floor suction device for a vacuum cleaner.

0002

[Prior Art] Conventionally, in this type of floor suction tool, as shown in Japanese Utility Model Publication No. 54-23176 (A47L5/28), the floor suction tool has a built-in motor for forward and reverse rotation. A device that is connected to a running wheel and rotates the running wheel forward or backward in the same direction as the moving direction of the floor suction device, so that the back and forth movement during cleaning is smoothed by the rotation of the running wheel. be.

However, in the floor suction device described above, the running wheels do not rotate in the left-right direction. Normally, floor suction devices are often moved in the left and right directions, and in this case, with the conventional floor suction device, the weight and suction force of the floor suction device cause the floor and floor suction device to stick together, creating a very large force. Unless moved, the floor suction device would not move from side to side, requiring excessive effort when cleaning.

0004

[Problems to be Solved by the Invention] The present invention has been made in view of the above-mentioned drawbacks, and provides a floor suction device that is easy to move back and forth and from side to side and can be moved back and forth and from side to side with a small force. The task is to do so.

[0005]

[Means for Solving the Problems] The present invention provides a suction port provided on the bottom of a main case that moves on the floor, a connecting pipe movably supported by the main case, and a suction port provided on the bottom of the main case. A floor suction device equipped with multiple moving wheels.
The moving wheels have front and rear drive wheels rotated by front and rear motors and left and right drive wheels rotated by left and right motors, and are provided with direction detection means for detecting the moving direction of the main body case. The front and rear motors and the left and right motors are driven according to the output.

[0006]Furthermore, the front and rear drive wheels and the left and right drive wheels each have a semicircular tip end portion in a diametrical cross section, and the tip portions protrude from the main body case to the outside of the case.

[0007]

[Operation] The direction in which the suction tool for the floor is being cleaned is detected by the direction detection means, and the detected output drives the motor corresponding to the direction of movement.In other words, when moving back and forth, the front and rear motors rotate forward or backward. It rotates in reverse, and the front and rear drive wheels are rotated to make the floor suction device move forward and backward. When moving from side to side, the left and right motors rotate forward or reverse, and the left and right drive wheels are rotated to make the floor suction device move forward and backward. Make the tool move by itself in the left and right direction.

Furthermore, when moving in the front-rear direction or left-right direction, the drive wheels in the direction that does not move remain stationary and slide on the floor, but since the tips of the drive wheels have a semicircular cross section, they do not move on the floor. It can glide smoothly and does not get in the way of movement.

[0009]

DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be explained based on the drawings.

1 is a vacuum cleaner body equipped with an electric blower and a dust collection chamber (none of which are shown); 2 is a suction hose attached to a floor suction device 3 via a connecting pipe 33; is connected via a connecting pipe 8 to a connecting pipe 7 with a handle that includes an air blow control switch 5 and a rotation control switch 6, and a flexible hose body 4 is connected to the connecting pipe 7 with a handle. 4 is connected to the suction port of the cleaner body 1.

In the floor suction tool 3, reference numeral 9 denotes a main body case in the form of an oblong housing formed by connecting an upper case 10 and a lower case 11 via a bumper 12;
The front part has an oblong suction port 13 on the bottom surface, and the suction port 1
A rotary brush 14 is rotatably supported and housed facing the brush 3. Further, on the right side of the rotating brush 14, a left and right motor 15 that rotates at a low speed is built in. At the rear of the main body case 9, there is a front and rear motor 16 that rotates at high speed, and a control circuit board 1 that controls the front and rear motor 16 and the left and right motors 15.
7 and are stored separately on the left and right. Rotating brush 14
A belt 18 that transmits the rotation of the longitudinal motor 16 to the rotating brush 14 is hung on the right side of the motor.

Moving wheels 19 are attached to the outer bottom of the lower case 11 at two places on the front and one place on the left side of the rear. 20 is raised upward.

Left and right drive wheels 22 are attached to the shaft 21 of the left and right motors 15, and front and rear drive wheels 25 are attached to the shaft 23 of the front and rear motors 16 via a speed reduction mechanism 24. The tip end of each of the drive wheels 22 and 25 has a semicircular cross-sectional shape in the straight direction as shown in FIG. It protrudes outside the case and comes into contact with the floor.

The front and rear motors 16 and the control circuit board 1
A connecting pipe 33 communicating with the suction port 13 is connected between the
The connecting pipe 33 is connected to the main body case 9.
It is pivotally supported on a support shaft 28 by being loosely fitted in the front, rear, left and right directions so as to be freely rotatable in the vertical direction. A plurality of switch groups serving as direction detecting means for detecting the moving direction of the main body case 9 are installed in the front, rear, right and left gaps between the support shaft 28 and the bearing portion 29 provided on the main body case 9. In other words, the switch installed in the front gap is the front switch 34, the switch installed in the rear gap is the rear switch 35, the switch installed in the right gap is the right switch 36, and the switch installed in the left gap is the left switch. The switch 37 is used. And the bearing part 29 and the support shaft 2
8, plate springs 38, 39, 40, and 41 are interposed in the front, rear, left, and right gaps so that the support shaft 28 is located exactly at the center when no force is applied to the connecting pipe 33.

[0015] The above-mentioned front, rear, left and right switches 34, 35,
36 and 37 are designed to turn on when the connecting pipe 33 moves in the direction in which force is applied (that is, the main body case 9 moves) during cleaning.
This causes the front and rear motors 16 or the left and right motors 15 to rotate forward or backward, thereby moving the floor suction opening fitting 3 in a desired direction.

To explain the operation based on the above configuration, the user holds the handle of the connecting pipe 7, turns on the blower control switch 5, and moves the floor suction tool 3 to the area to be cleaned while opening the suction port. I will suck up the garbage from 13. At this time, when the floor suction tool 3 is moved forward, the front switch 34 is turned on due to the forward movement of the connecting pipe 33.
The control circuit board 17 indicates that only the front switch 34 is turned on.
Judging from this, the front and rear motors 16 are rotated in the forward direction, and the front and rear drive wheels 25 are rotated forward to move the floor suction tool 3 forward. At this time, the left and right drive wheels 22 remain stationary and slide on the floor, but since the tips of the left and right drive wheels 22 have a semicircular shape, they slide smoothly on, for example, a carpet floor as shown in FIG. be able to. In FIG. 5, the arrow indicates the direction of sliding. When the floor suction tool 3 is moved backward, only the rear switch 35 is turned on due to the backward movement of the connecting pipe 33, and the front and rear motor 1 is turned on.
6 and rotate the front and rear drive wheels 25 backwards to remove the floor suction tool 3.
move backwards.

When moving the floor suction tool 3 from side to side,
The left switch 37 and the right switch 36 are turned ON, and only the left and right motors 15 rotate forward or reverse to drive the left and right drive wheels 2.
2 to the left or right to move the floor suction tool 3 to the left or right. At this time, the front and rear drive wheels 25 remain stationary, and slide smoothly on the floor surface as in the case of the left and right drive wheels 22 described above.

In the above embodiment, the two drive wheels 22
, 25 is rotated while the other remains stationary and slides on the floor, but the other may be retracted from the floor. Moreover, although three of the moving wheels are made to be free wheels, they may also be spherical wheels. Also, although one pair of drive wheels is provided on the front, rear, left and right sides, two or more pairs may be provided in order to ensure running stability.

Further, front, rear, left and right switches 34, 35, 36 and 37 are provided as direction detection means for the main body case.
These may be detected by a pressure sensor or the like.

[0020]

According to the structure of the present invention, the moving direction of the floor suction tool is detected and the corresponding drive wheel is rotated in that direction, so that the floor suction tool can be moved back and forth with a small force. It can be moved left and right, reducing the user's effort.

[Brief explanation of the drawing]

FIG. 1 is a cross-sectional view of a floor suction device of the present invention.

FIG. 2 is an overall perspective view showing the state of use.

FIG. 3 is a sectional view taken along line AA in FIG. 1;

FIG. 4 is a cross-sectional view showing a connecting portion between a connecting pipe and a main body case.

FIG. 5 is a diagram showing how stationary left and right drive wheels slide on a floor surface (on a carpet).

[Explanation of symbols]

9 Main case 13 Suction port 33 Connecting pipe 19　　　　Swivel wheels (movement wheels) 16 Front and rear motors 25 Front and rear drive wheels 15 Left and right motors 22 Left and right drive wheels

Claims (2)

[Claims] 1. A suction port provided on the bottom of a main case that moves on the floor, a connecting pipe movably supported by the main case, and a plurality of moving wheels provided on the bottom of the main case. The moving wheels have front and rear drive wheels rotated by front and rear motors and left and right drive wheels rotated by left and right motors, and include direction detection means for detecting the moving direction of the main body case. A suction tool for a floor, characterized in that the front and rear motors and the left and right motors are driven according to the output of the detection means. 2. The front and rear drive wheels and the left and right drive wheels each have a semicircular tip in a diametrical cross section, and the tip protrudes from the main body case to the outside of the case. 1. The floor suction device described in 1.