JP2003265372A - Suction opening body and vacuum cleaner - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a suction opening body and a vacuum cleaner with which dust in the deep part of a carpet that can not be scooped up by a rotary cleaning body can be sufficiently sucked. <P>SOLUTION: In the suction opening body, a first suction opening 23A and a second suction opening 24A are respectively provided on the front side and the rear side of a bottom face 21a of a suction opening main body 21, a cleaning body chamber opening its lower face between the first suction opening 23A and the second suction opening 24A is provided on the suction opening main body 21, the cleaning body chamber is equipped with the rotary cleaning body to be freely rotatable, and a motor is provided for rotating the rotary cleaning body, dust is sucked only from the first suction opening 23A and the second suction opening 24A. <P>COPYRIGHT: (C)2003,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a suction port body having suction openings at front and rear sides of a bottom surface of a suction port body, and an electric vacuum cleaner provided with the suction port body.

[0002]

2. Description of the Related Art Conventionally, a suction port main body having a suction chamber having a suction opening on a bottom surface thereof, a rotary cleaning member rotatably provided in the suction chamber, and a motor for rotationally driving the rotary cleaning member are provided. A suction mouthpiece provided with is known.

The suction port scrapes up dust adhering to the carpet or the like by the rotation of the rotary cleaning member, so that the carpet or the like can be efficiently cleaned.

[0004]

However, in the conventional suction port body, since the rotary cleaning body is provided in the suction chamber, the width of the suction opening (width of the suction port body in the front-rear direction).
Therefore, the suction force from the suction opening is weak, and only the dust that can be scraped up by the rotary cleaning body can be sucked in. However, there was a problem that it could not be sufficiently sucked.

The present invention has been made in view of the above problems, and an object of the invention is to provide a suction port body and an electric device capable of sufficiently sucking dust in a deep portion of a carpet which cannot be scraped up by a rotary cleaning body. To provide a vacuum cleaner.

[0006]

To achieve the above object, according to the present invention, a first suction opening and a second suction opening are provided on the front side and the rear side of the bottom surface of the suction port body, respectively.
A cleaning body chamber having a lower surface opened between the suction opening and the second suction opening is provided in the suction port body, a rotary cleaning body is rotatably provided in the cleaning body chamber, and a driving means for rotating the rotary cleaning body. Is provided, and dust is sucked from only the first suction opening and the second suction opening.

[0007]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of a suction port body and a vacuum cleaner according to the present invention will be described below with reference to the drawings. [First Embodiment] In FIG. 1, 10 is a main body of an electric vacuum cleaner. Inside the main body 10, a dust collecting chamber 11 and an electric blower 12 for making the dust collecting chamber 11 a negative pressure are provided. A dust collecting filter 13 is detachably mounted in the dust collecting chamber 11. Reference numeral 15 denotes a hose, one end of which is detachably connected to the electric vacuum cleaner body 10, and a hand operation pipe 16 is provided at the other end of the hose 15.

The hand operation pipe 16 is provided with a handle portion 16A and an operation portion 16B, and the operation portion 16B is provided with a power setting switch for setting the power of the electric blower 11 and an off switch for turning off the power. ing. Further, an extension pipe 17 is detachably connected to the hand operation pipe 16, and a suction port body 20 is detachably connected to a tip end portion of the extension pipe 17.

A power supply line (not shown) is wired to the hose 15 and the extension pipe 17 so that a DC power source is supplied to a motor 33 described later.

As shown in FIGS. 2 to 4, the suction port body 20 is provided with a suction port body 21 and a connection pipe 19 and the like provided on the rear portion of the suction port body 21 so as to be vertically rotatable. There is.

In the suction port body 21, first and second suction chambers 23 and 24 are formed, in which first and second suction openings 23A and 24A extending in the left-right direction are formed in front of and behind the bottom surface 21a. Second
The openings 25A, 2 are formed between the suction chambers 23, 24 and between the first and second suction openings 23A, 24A of the bottom surface 21a.
6A is formed between the pair of cleaning chambers 25 and 26 and the opening 2 of the bottom surface 21a which is formed between the cleaning chambers 25 and 26.
Detection chamber 2 with detection opening 27A formed between 5A and 26A
7 are provided.

In the cleaning chambers 25 and 26, rotary cleaning members 30 and 31 are provided.
Are arranged in the cleaning chambers 25, 2
6 and the detection chamber 27, and is mounted on a rotary shaft 32 that is rotatably provided. The rotary shaft 32 is rotationally driven by a motor (driving means) 33, and the rotary cleaning bodies 30, 31 rotate together with the rotary shaft 32.

A detection member (moving direction detection member) 35 is arranged in the detection chamber 27, and the detection member 35 is rotatably provided on a cylindrical shaft portion 36 in which a rotary shaft 32 is rotatably inserted. The rotary unit 35A has a rotary unit 35A and a brush (contactor) 35B that extends downward and has a tip protruding from the detection opening 27A at the lower portion of the rotary unit 35A. Also, the rotating portion 35A
A valve body (air passage switching means) 37 is provided at the upper part of the valve body 37. The valve body 37 projects upward from an opening 27B in the upper part of the detection chamber 27 and enters a connection air passage part 45 described later.

The tip of the brush 35B comes into contact with the surface to be cleaned, and when the suction port body 20 is moved forward, the rotating portion 35A of the detection member 35 comes into contact with the brush 35B to center the cylindrical shaft portion 36. And rotate counterclockwise to detect member 3
5 is in the state shown in FIG. Similarly, when the suction port body 20 is retracted, the rotating portion 35A of the detecting member 35 is rotated clockwise around the cylinder shaft portion 36, and the detecting member 35 is brought into the state shown in FIG.

Further, the gap between the rotating portion 35A of the detection member 35 and the inner wall of the detection chamber 27 is small, and the suction force for sucking dust from the detection opening 27A of the detection chamber 27 is set small. .

In the suction port main body 21, a communication air passage 40 communicating with the connecting pipe 22 and extending from the rear portion of the suction port main body 21 to the front and a first suction chamber 23 and the first suction chamber 23. The first extending upward while tilting backward from the
A guide air passage 41 and a second guide air passage 42 communicating with the second suction chamber 24 and extending upward while tilting forward are formed. The first and second guide air passages 41 and 42 and the communication air passage 40 are formed in the central portion of the suction port body 21.

The front end opening 40A of the communication air passage 40 and the opening 27B of the detection chamber 27 are communicated with each other by the connection air passage portion 45, and the connection air passage portion 45 has an upper opening 41A of the first guide air passage 41. The upper opening 42A of the second guide air passage 42 is formed to face each other, and the first and second suction chambers 23, 24 and the communication air passage 40 are connected to the first and second guide air passages 41, 42 and connected. It communicates with each other via the air passage portion 45.

When the suction port body 20 moves forward, the valve body 37 closes the upper opening 41A of the first guide air passage 41, and when the suction port body 20 moves backward, the valve body 37 makes the second guide. The upper opening 42A of the air passage 42 is closed.

A pair of rollers R1 and R2 are provided on the bottom surface of the suction port body 21 in the front and the rear, respectively.

FIG. 5 is a block diagram showing the configuration of the control system of the suction port body 20. In FIG. 5, reference numeral 50 denotes the detection member 3.
5, the contact piece is connected to the contact 51 when the suction port body 21 moves forward, and is connected to the contact 52 when it moves backward. The contact piece 50 is connected to an input port 55 of a control device 54, which will be described later, the contact 51 is connected to an output terminal of a DC power supply circuit (not shown) via a resistor 53, and the contact 52 is grounded. Contact piece 50 and contact points 51, 5
2 is provided in the detection chamber 27 and is omitted in FIG.

Reference numeral 54 is a control device for reading the voltage input to the input port 55 to determine whether the suction port body 20 is moving forward or backward and drivingly controlling the rotation direction of the motor 33. It is composed of a CPU and the like.

The DC power supply circuit and control unit 54 is operated by the DC power supply supplied to the motor 33, and is provided in the suction port body 21. [Operation] Next, operations of the suction port body and the electric vacuum cleaner of the above-described embodiment will be described.

When the electric blower 12 is driven by operating the power setting switch, the dust collection chamber 11 has a negative pressure, and the hose 15, the extension pipe 17, the connection pipe 22, and the communication air passage 40 have a negative pressure. When the suction port body 20 is moved forward, the rotating portion 3 is moved by the brush 35B of the detection member 35 as shown in FIG.
5A rotates counterclockwise around the cylinder shaft portion 36, and the valve element 37 closes the upper opening 41A of the first guide air passage 41.

Therefore, the negative pressure of the communication air passage 40 does not act on the first suction chamber 23, and the dust is not sucked from the suction opening 23A of the first suction chamber 23. On the other hand, since the negative pressure in the communication air passage 40 acts on the second suction chamber 24, dust is sucked from the suction opening 24A of the second suction chamber 24.

Further, since the contact piece 50 comes into contact with the contact 51 due to the counterclockwise rotation of the rotating portion 35A of the detection member 35, the voltage input to the input port 55 of the controller 54 is Vc.
Becomes The controller 55 reads the voltage Vc input to the input port 55, determines that the suction port body 20 is moving forward, drives the motor 33 in the normal direction, and rotates the cleaning body 3.
0, 31 are rotated counterclockwise as shown in FIG.
That is, the rotary cleaning bodies 30, 31 are rotated in the forward direction with respect to the moving direction of the suction port body 20, and the forward movement operation of the suction port bodies 30, 31 becomes light.

Then, the dust scraped up by the rotary cleaning bodies 30, 31 is sucked from the suction opening 24A of the second suction chamber 24. That is, after the dust is picked up by the rotary cleaning bodies 30 and 31, it is sucked by the suction opening 24A of the second suction chamber 24, and the scratched dust is sucked by the suction opening 24A of the second suction chamber 24. The suction can be surely performed, and it is possible to prevent the scraped dust from being left.

When the suction port body 20 is moved backward, the rotating portion 3 is moved by the brush 35B of the detecting member 35 as shown in FIG.
5A rotates clockwise around the cylinder shaft portion 36, and the valve element 37 closes the upper opening 42A of the second guide air passage 42.

Therefore, the suction opening 24 of the second suction chamber 24
No dust is sucked from A. On the other hand, since the negative pressure in the communication air passage 40 acts on the first suction chamber 23, dust is sucked from the suction opening 23A of the first suction chamber 23.

Further, since the contact piece 50 contacts the contact 52 by the clockwise rotation of the rotating portion 35A of the detecting member 35, the voltage input to the input port 55 becomes 0 volt. The control device 55 reads the voltage (0 volt) input to the input port 55 and determines that the suction port body 20 is moved backward, and drives the motor 33 in the reverse direction to rotate the rotary cleaning body 30,
Rotate 31 counterclockwise. That is, the rotary cleaning body 30 is rotated in the forward direction with respect to the moving direction of the suction port body 20, and the backward movement operation of the suction port body 20 becomes light.

Then, the dust scraped up by the rotary cleaning bodies 30, 31 is sucked from the suction opening 23A of the first suction chamber 23. That is, after the dust is picked up by the rotary cleaning bodies 30, 31, it is sucked in by the suction opening 23A of the first suction chamber 23, and the scratched dust is sucked by the suction opening 23A of the first suction chamber 23. The suction can be surely performed, and it is possible to prevent the scraped dust from being left.

Further, since the detection chamber 27 is communicated with the communication air passage 40 via the connection air passage portion 45, it is possible to suck the thread waste and the like that have entered the detection chamber 27. Therefore, it is possible to prevent the yarn shaft and the like from being wound around the cylindrical shaft portion 36 of the detection chamber 27 and hindering the rotation of the detection member 35.

By the way, since the rotary cleaning bodies 30 and 31 are not provided in the first and second suction chambers 23 and 24, the first and second suction openings 23A and 24A of the first and second suction chambers 23 and 24 are not provided. Since the width (width with respect to the front-rear direction) can be reduced regardless of the size of the rotary cleaning bodies 30, 31, the suction force for sucking dust by the first and second suction openings 23A, 24A can be increased. .

Therefore, it is possible to sufficiently suck the dust adhering to the deep portion of the carpet or the like which could not be scraped up by the rotary cleaning bodies 30 and 31.

In the first embodiment, the rotary cleaning bodies 30, 31 are rotated in the forward direction of the moving direction of the suction port body 20, but the rotary cleaning body 30 is rotated in the reverse direction of the moving direction of the suction port body 20. , 31 may be rotated. In this case, the efficiency of scraping dust by the rotary cleaning bodies 30, 31 is improved. [Second Embodiment] FIG. 7 shows a suction port body 60 of a second embodiment. In this suction port body 60, one cleaning chamber 62 of the suction port body 61 is provided, one rotation cleaning body 63 is provided in the cleaning chamber 62, and a pair of detection chambers 64 is provided on both sides of the cleaning chamber 62. The detection member 35 is provided in the detection chamber 64. Incidentally, 64A is an opening.

Then, as shown in FIG. 8, an extension air passage 65 extending from the connecting pipe 22 in the left-right direction, and the extension air passage 6
5 and the first and second guide air passages 41 that communicate with the respective communication air passages 40 as in the first embodiment.
42 and the like are formed in the suction port body 61.

According to this second embodiment, since both ends of the first and second suction chambers 23 and 24 are communicated with the communication air passage 40, the first and second suction chambers 23 and 24 of the first and second suction chambers 23 and 24 are connected to each other. The dust can be sucked with a strong suction force from any position in the left-right direction of the second suction openings 23A, 24A, and the dust can be sucked with a stable suction force from any position. [Third Embodiment] FIG. 9 shows a suction port body 70 of a third embodiment. In this suction port body 70, two cleaning chambers 71 and 72 are provided, a detection chamber 73 is provided between the cleaning chambers 71 and 72, and a communication air passage 74 is provided at the center of the extension air passage 65 as shown in FIG. The first and second guide air passages 41 and 42 that are formed and communicate with the communication air passage 74 are formed. Note that 71A, 72A and 73A are openings.

According to the third embodiment, the dust can be sucked with a stronger suction force from any position in the left-right direction of the first and second suction openings 23A and 24A, and the dust can be further stabilized from any position. Dust can be sucked by the suction force.

[0038]

As described above, according to the present invention, the dust adhering to the deep portion of the carpet or the like can be sufficiently sucked regardless of the size of the rotary cleaning body.

[Brief description of drawings]

FIG. 1 is a perspective view showing an appearance of an electric vacuum cleaner according to the present invention.

FIG. 2 is a bottom view showing a bottom surface of the suction port body shown in FIG.

3 is a cross-sectional view of the suction port body shown in FIG.

FIG. 4 is a side view showing a cross section of a part of the suction port body.

FIG. 5 is a block diagram showing a configuration of a control system of a suction port body.

FIG. 6 is an explanatory diagram showing a state of the detection member when the suction port body is retracted.

FIG. 7 is a bottom view showing the suction port body of the second embodiment.

FIG. 8 is a conceptual diagram showing an air passage of the suction port body of FIG. 7.

FIG. 9 is a bottom view showing the suction port body of the third embodiment.

FIG. 10 is a conceptual diagram showing an air passage of the suction port body of FIG.

[Explanation of symbols]

21 Suction port body 21a bottom 23A First suction opening 24A Second suction opening 33 motor (driving means)

Claims (6)

[Claims] 1. A cleaning method in which a first suction opening and a second suction opening are provided on a front side and a rear side of a bottom surface of a suction port body, respectively, and a lower surface is opened between the first suction opening and the second suction opening. A suction chamber provided with a body chamber in the suction port body, a rotary cleaning device being rotatably provided in the cleaning chamber, and a drive means for rotating the rotary cleaning device, wherein the first suction opening is A suction port body that sucks dust only from the second suction opening. 2. The dust is sucked from the second suction opening when the suction port body is moving forward, and the dust is sucked from the first suction opening when the suction port body is retracting. The suction port body according to 1. 3. A communication air passage communicating with the dust collection chamber of the cleaner body, and a first communication passage communicating the communication air passage with the first suction opening.
A guide air passage, a second guide air passage that communicates the communication air passage with the second suction opening is formed in the suction port body, and a moving direction detection member that detects a moving direction of the suction port body, When the moving direction detecting member detects the forward movement of the suction port body, the first guide air passage is closed, and when the moving direction detecting member detects the backward movement of the suction port body, the second guide air passage is closed. An air passage switching unit that closes and a detection chamber that houses the moving direction detection member are provided in the suction port body, and the bottom of the detection chamber is opened to detect the movement of the suction port body, and the detection chamber is opened. The suction port body according to claim 1, wherein the suction port body is communicated with the communication air passage. 4. The rotation direction of the rotary cleaning body is switched based on the movement direction detected by the movement direction detection member so as to be forward with respect to the movement direction of the suction port body. Suction body. 5. The rotating direction of the rotary cleaning body is switched so as to be opposite to the moving direction of the suction port body based on the moving direction detected by the moving direction detecting member. Suction body. 6. An electric vacuum cleaner comprising the suction port body according to any one of claims 1 to 5.