JPH11197064A - Sucking device for vacuum cleaner and vacuum cleaner using the same - Google Patents

Abstract

PROBLEM TO BE SOLVED: To sweep reliably to the depths of piles of a carpet by blast from a communicating opening by providing a pipe having a hollow portion communicating with outside air in a dust collecting room, and providing more than one communicating opening communicating with the hollow portion and the dust collecting room on the wall of the pipe. SOLUTION: A pipe 7 is arranged in a dust collecting room 6 inside a suction device, a hollow portion 9 of the pipe communicates with outside air penetrating the outside covering of the suction device. The pipe 7 has communicating openings 10 communicating with outside air through a hole 8 of the suction device covering and communicating with the dust collecting room 6 on the surface. Such structure makes pressure inside the suction device lower than the pressure of outside air around the suction device and thereby allows outside air to enter from the hole 8 of the outer covering of the suction device, pass the hollow portion 9 of the pipe 7, and to be injected into the dust collecting room 6 from the communicating openings 10. Thus cleaning work is carried out reliably by straightening the flow of suction air inside the dust collecting room 6 by jetting air and blowing off dust on a surface to be cleaned by a jetting air ejected to the surface to be cleaned effectively.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

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

[0002]

2. Description of the Related Art In recent years, suction devices for vacuum cleaners for effectively rotating an agitator to effectively clean a carpet have become mainstream.

Conventionally, this type of suction tool is disclosed in Japanese Patent Publication No. 1-602.
No. 52 is generally known. The structure will be described with reference to FIGS. 15 and 16.
A brush chamber which includes an upper frame 1 and a lower frame 2 and has an agitator 36 in which a blade 15 is arranged on a peripheral surface at a front portion of the suction tool, and collects dust by rotation of the agitator 36. The brush chamber 30 is provided with a brush chamber opening 37 on the lower surface side of the brush chamber 30 which is in contact with the floor surface. An arm 5 is rotatably held up and down by an upper frame 1 and a lower frame 2 at the rear of the suction device. 4 is a connecting pipe 4 attached to one end of the arm 5 so as to be rotatable in the circumferential direction.
It is.

In the arm 5, an air turbine 20 which rotates by utilizing the suction air from the cleaner main body is fixed to an air turbine shaft 21, and the air turbine shaft 21 is formed by a hole provided in a side wall of the arm 5. It penetrates and passes through the air turbine bearing 22 sandwiched between the upper frame 1 and the lower frame 2. A small pulley 24 is formed at the end of the air turbine shaft 21, and a large pulley 26 is formed at the end of the agitator 36 via a belt 25.
The power generated by the rotation of the air turbine 20 by the suction wind from the main body of the cleaner is transmitted.

[0005] An opening a34 is provided on the side surface of the arm 5, and coincides with an opening b35 provided in the upper frame 1 at the lowermost part of the vertical rotation of the arm 5 and communicating with the outside air. When the suction device is positioned in the air, the arm 5 is forcibly positioned at the lowest position of rotation by the weight of the suction device and the spring 33 provided on the rotation shaft portion of the arm 5. The opening a34 and the opening b35 communicate with each other to form a flow path in which outside air does not pass through the air turbine 20, so that the rotation of the air turbine 20 is reduced.

[0006]

As described above, in the conventional suction device for a vacuum cleaner, the rotation of the agitator 20 does not completely stop because all the inflow air flowing through the air turbine 20 cannot be eliminated. When the suction tool is positioned in the air, no rotational load is applied to the agitator 36, so that the air turbine 20 rotates at a high rotation speed. At that time, the rotating shaft of the air turbine 20 generates heat due to friction, causing rotation failure due to image sticking, Even when the suction tool is in the air, a load is applied to the rotating shaft, so that the durability of the rotating shaft is poor.

Further, there is a drawback that a contact object such as a curtain which reduces the load on the agitator 36 is involved.

Further, the suction force of the main body of the vacuum cleaner is used to rotate the air turbine 20, and the air turbine 20 is located closer to the main body of the vacuum cleaner than the dust collection chamber, and the air turbine 20 is used to form a suction passage. A part was blocked, and all the suction air from the vacuum cleaner body could not be transmitted to the surface to be cleaned.

An object of the present invention is to provide a highly durable suction device for a vacuum cleaner by stopping the rotation of an agitator when the suction device is in the air. .

[0010] Furthermore, a high-performance vacuum cleaner suction tool which can efficiently utilize the suction performance of the vacuum cleaner body by directing all the suction air of the vacuum cleaner body to the surface to be cleaned, and a vacuum cleaner using the same. It is intended to provide.

[0011]

In order to achieve the above-mentioned object, the present invention provides a dust collecting chamber having a lower opening, and a pipe provided in the dust collecting chamber and having a hollow portion at least one of which communicates with the outside air. A plurality of communication ports for communicating the hollow portion and the dust collection chamber are provided on the wall surface of the pipe, and when used, the inside of the carpet pile can be reliably cleaned by a jet from the communication port. Also, since the pipe does not rotate, there is no entangling of objects to be cleaned.

[0012]

BEST MODE FOR CARRYING OUT THE INVENTION
A dust collection chamber having a lower opening, and a pipe provided in the dust collection chamber and provided with a hollow portion at least one of which communicates with outside air,
A plurality of communication ports for communicating the hollow portion and the dust collection chamber are provided on the wall surface of the pipe, and when used, the air blown from the communication port can reliably clean the interior of the carpet pile, Since the pipe does not rotate, no non-cleaning material is involved.

Further, according to the invention described in claim 2, the communication port is provided with:
The suction pipe is arranged at an angle to the center line in the longitudinal direction of the pipe, and a rotary shaft is provided on the side wall of the suction tool body to rotatably hold the pipe. When the surface is vibrated, dust is knocked out, and when the suction tool is lifted, outside air enters through the suction port, and the rotation of the pipe stops immediately, so that the curtain or the like is not involved.

According to a third aspect of the present invention, a projection or a brush which comes into contact with the surface to be cleaned during rotation is provided on the surface of the pipe, and blows off dust adhering to the projection or the brush. Can maintain cleanliness.

According to the fourth aspect of the present invention, since a gap communicating with the dust collecting chamber is provided between the inner wall of the pipe and the rotating shaft, rotation failure due to friction of the shaft can be prevented.

According to the fifth aspect of the present invention, a plurality of blades inclined with respect to the center line in the longitudinal direction of the pipe are provided on the inner wall of the pipe in the vicinity of the gap, so that a rotational force can be applied to the pipe, thereby further cleaning the pipe. The effect is enhanced.

Further, according to the invention of claim 6, by forcibly rotating the pipe by a driving source such as an air turbine, the number of rotations of the pipe is increased, and the cleaning effect is further enhanced.

According to a seventh aspect of the present invention, there is provided an electric blower, and a suction port connected to communicate with the vacuum cleaner suction tool according to any one of the first to sixth aspects. It is possible to provide a vacuum cleaner having high dust collection performance by the action of the suction force of the electric blower and the suction tool having high dust collection efficiency.

[0019]

(Embodiment 1) A first embodiment of the present invention will be described below with reference to FIGS.

The outer periphery of the suction tool is composed of an upper frame 1 and a lower frame 2, and has a connecting pipe 4 and an arm 5 connected to a cleaner body (not shown) at the rear.

A dust collecting chamber 6 is provided inside the suction device, and a pipe 7 which is sandwiched between the upper frame 1 and the lower frame 2 and has a hollow central portion is provided in the dust collecting chamber 6. Have been.

A first embodiment of the present invention will be described with reference to FIGS. A pipe 7 is arranged in a dust collecting chamber 6 in the suction tool, and a hollow portion 9 of the pipe 7 penetrates through the outer circumference of the suction tool and communicates with the outside air. It has a communication port 10 that communicates with the outside air through the hole 8 and also communicates with the dust collection chamber 6, and the outside air is sucked into the hollow portion 9 by suction from the vacuum cleaner main body, and the dust collection chamber is connected through the communication port 10. 6 is set to be injected.

Accordingly, when the pressure inside the suction tool becomes lower than the pressure of the outside air around the suction tool by suction from the vacuum cleaner main body, the outside air enters through the hole 8 in the outer periphery of the suction tool, and the hollow pipe 7 is opened. By being injected into the dust collecting chamber 6 from the communication port 10 through the section 9, the flow of the suction air in the dust collecting chamber 6 is rectified by the jet wind, and the jet wind 11 efficiently jets to the surface to be cleaned. The dust on the surface to be cleaned can be blown off and the cleaning can be performed reliably.

(Embodiment 2) A second embodiment of the present invention will be described with reference to FIGS.

The pipe 7 is formed in a cylindrical shape, the communication port 10 is set to be inclined with respect to the center line 12 of the pipe 7, and the rotary shaft 1 rotatably holds the pipe 7 on the inner wall of the dust collecting chamber 6.
The hollow shaft 9 of the pipe 7 and the hole 8 penetrating the outer shell of the suction tool are provided in the rotary shaft 15, and the outside air enters through the hole 8 of the outer shell of the suction tool, and the hollow part 9 of the pipe 7 is removed. Street,
By being injected from the communication port 10 into the dust collection chamber 6 in a direction different from the rotation center of the pipe 7, the pipe 7 can be rotated by the propulsive force of the jet wind 11.

Accordingly, the jet air 11 is injected into the dust collection chamber 6 from the communication port 10 to generate a thrust for pushing the pipe 7 in a direction opposite to the direction of the injection. However, since the pipe 7 is rotatably provided by the rotation shaft 15 but the rotation center 12 cannot move, the pipe 7 performs a rotating motion about the rotation center 12 so that the jet air 1
1 intermittently collides with a surface to be cleaned, and vibrates a pile such as a carpet to remove dust entangled with the pile from the pile and collect the dust by suction air.

(Embodiment 3) A third embodiment of the present invention will be described with reference to FIGS.

A convex or brush body 16 is provided on the surface of the pipe 7, and the convex or brush body 16 is set to be in contact with the surface to be cleaned when the pipe 7 rotates. Injection air 1 to be injected into the dust collection chamber 6
When the pipe 7 rotates at 1, the projections or brushes 16 provided on the surface of the pipe 7 contact the surface to be cleaned so as to continuously collide with the surface to be cleaned in accordance with the rotation of the pipe 7, thereby adding to the jet air 11. Dust can be directly blown off by the convex portion or the brush body 16.

Also, the blowing air 11 can blow off dust that is going to adhere to the convex portion or the brush body 16, thereby maintaining the cleanness of the suction tool and repelling dust located on the surface to be cleaned. It improves the flying dust collection performance.

(Embodiment 4) A fourth embodiment will be described with reference to FIG.

A gap 18 is provided between a shaft portion 15 rotatably holding the pipe 7 in the dust collection chamber 6 and a portion of the pipe held by the shaft portion 15, and suction from the vacuum cleaner main body. The shaft portion 15 is set so that the wind can pass therethrough, and the suction air from the vacuum cleaner body flows through the hole 8 penetrating through the outer periphery of the suction tool and passes through the gap 18 so as to rotatably hold the pipe 7. And an air layer 17 is formed in a gap 18 between a portion of the pipe 7 held by the shaft 15 and the shaft 1
The rotation of the pipe 7 can be performed with very little contact between the pipe 5 and the pipe 7, and the shaft portion 15 and the pipe 7 hardly contact with each other. The air layer 17 in the gap 18
Has a cooling effect against heat generated above the outside air temperature since the outside air always flows in, does not generate heat due to friction, and does not cause rotation failure due to burn-in. Further, since the pipe 7 can be rotated without the shaft 15 contacting the pipe 7, the shaft 1
Since no friction is generated in the pipe 5, there is no rotational load on the pipe 7, and the pipe 7 can rotate smoothly and quietly without friction noise generated by the friction.

(Embodiment 5) A fifth embodiment will be described with reference to FIG.

A gap 18 is provided between a shaft 15 that rotatably holds the pipe 7 in the dust collection chamber 6 and a portion of the pipe 7 that is held by the shaft 15.
A plurality of spiral blades 19 are provided on the inner surface or on the shaft portion 15, and the pipe 7 is formed by the passage of suction air by the vacuum cleaner body.
Is set to be rotatable, so that the inflow wind passes through the air layer 17 in the gap 18, thereby causing the blade 1 to rotate.
9 impinges on the pipe 7 in a direction in which the incoming air collides with the incoming air. However, since the pipe 7 is rotatably provided by the rotation shaft 15 but the rotation center 12 cannot be moved, the pipe 7 can rotate the pipe 7 by performing a rotating motion about the rotation center 12.

(Embodiment 6) A sixth embodiment will be described with reference to FIG.

In the arm 5, an air turbine 20 which rotates by utilizing the suction air from the cleaner body is fixed to an air turbine shaft 21. The air turbine shaft 21 is formed by a hole provided in a side wall of the arm 5. It penetrates and passes through the air turbine bearing 22 sandwiched between the upper frame 1 and the lower frame 2. A pulley small 24 is formed at the end of the air turbine shaft 21,
The power generated by the rotation of the air turbine 20 by the suction air from the cleaner body is transmitted to a large pulley 26 formed at the end of the pipe 7. Therefore, by forcibly rotating the pipe 7 by driving the air turbine 20, the rotation speed of the pipe 7 is increased, and the cleaning effect is further enhanced.

(Embodiment 7) The seventh embodiment will be described with reference to FIG.

Reference numeral 32 denotes a vacuum cleaner main body, which includes a dust collecting chamber 33 for collecting dust at the front and an electric blower 34 (not shown) at the rear.
Is built-in. Reference numeral 35 denotes a suction port provided to communicate with the dust collection chamber 33, and one end of a hose 36 is connected thereto. The other end of the hose 36 is connected to the first through
The suction pipe 31 is connected to the connection pipe 4 of any one of the suction tools 31 described in the sixth embodiment.

With the above configuration, a vacuum cleaner with good performance can be provided by using the suction force of the electric blower 34 and the suction tool 31 having good dust collection efficiency.

[0039]

As described above, according to the first aspect of the present invention, the pressure inside the suction tool becomes lower than the pressure of the outside air around the suction tool by suction from the main body of the vacuum cleaner. As a result, outside air enters through the hole in the outer shell of the suction tool, passes through the pipe hollow, and is injected into the dust collection chamber from the communication port, thereby rectifying the flow of suction air in the dust collection chamber and efficiently cleaning it. A suction tool that can spray the dust on the surface to be cleaned, blow off dust on the surface to be cleaned, and reliably clean the interior of the carpet pile by the collision of the jet wind with the interior of the carpet pile. Things.

Further, according to the second aspect of the present invention, the propulsive force for pushing the pipe in the opposite direction to the direction of the injection is generated by the injection wind being injected into the dust collecting chamber from the communication port. . However, since the pipe is rotatably provided by the rotating shaft but the center of rotation cannot be moved, the pipe performs a rotating motion about the center of rotation so that the jet wind intermittently hits the surface to be cleaned. A pile such as a carpet is vibrated to remove dust entangled with the pile from the pile and collect the dust by a suction wind.

Further, since the pipe can be rotated without using auxiliary means such as an air turbine and a motor, an inexpensive and lightweight suction tool can be provided.

Further, according to the third aspect of the present invention, the projection or the brush body provided on the surface of the pipe and the jet wind continuously collide with the surface to be cleaned in accordance with the rotation of the pipe. Dust can be blown off by contact.

Also, the blowing air can blow off the dust to be attached to the convex portion, so that the cleanliness of the suction tool can be maintained, and the dust located on the surface to be cleaned can be blown off to suction high dust. Tools can be provided.

According to the fourth aspect of the present invention, an air layer is formed in the gap between the pipe and the portion held by the shaft, so that the shaft and the pipe can rotate without being in contact with each other. In addition, the shaft portion does not generate heat due to friction, and rotation failure due to image sticking does not occur. In addition, since the pipe can be rotated without the shaft contacting the pipe, there is no friction in the shaft, so there is no rotational load on the pipe and there is no friction noise generated by the friction, and the pipe can rotate smoothly and quietly. It is possible to provide a suction tool that can be used.

According to the invention of claim 5 of the present invention, when the inflow wind passes through the gap, the inflow wind collides with the blades, and the propulsive force for pushing the pipe in the direction in which the inflow wind collides is provided. Occur. However, the pipe is rotatably provided by the rotating shaft, but the center of rotation cannot be moved, so that the pipe can rotate the pipe by rotating about the center of rotation so that a high torque can be generated, and the hair can be generated. The pipes rotate reliably even on long carpets. Therefore, it is possible to provide a suction tool that can surely perform cleaning on various surfaces to be cleaned.

According to the sixth aspect of the present invention, by forcibly rotating the pipe by driving the air turbine, the number of rotations of the pipe can be increased, a high torque can be generated, and The pipes rotate reliably even on long carpets. Therefore, various cleaning surfaces can be reliably cleaned, and the cleaning effect is further enhanced.

According to the seventh aspect of the present invention, dust is collected by using the suction force of the electric blower together with the suction device for a vacuum cleaner having high dust collection efficiency according to the first to sixth aspects. A high-performance vacuum cleaner can be provided.

[Brief description of the drawings]

FIG. 1 is a partially broken side view of a suction tool for a vacuum cleaner showing a first embodiment of the present invention.

FIG. 2 is a bottom view of the suction tool.

FIG. 3 is a plan view of a suction tool for a vacuum cleaner showing the first to fifth embodiments of the present invention.

FIG. 4 is a side view of the suction tool.

FIG. 5 is a bottom view of a vacuum cleaner suction tool according to a second embodiment of the present invention.

FIG. 6 is a partially cutaway side view of the suction tool.

FIG. 7 is a sectional view of a pipe of the suction tool.

FIG. 8 is a bottom view of a suction tool for a vacuum cleaner showing a third embodiment of the present invention.

FIG. 9 is a partially cutaway side view of the suction tool.

FIG. 10 is a sectional view of a pipe of the suction tool.

FIG. 11 is an enlarged sectional view of a shaft part of a suction device for a vacuum cleaner showing a fourth embodiment of the present invention.

FIG. 12 is an enlarged sectional view of a shaft part of a suction tool for a vacuum cleaner showing a fifth embodiment of the present invention.

FIG. 13 is a plan view of the suction tool for a vacuum cleaner according to a sixth embodiment of the present invention, with an upper frame removed.

FIG. 14 is an overall perspective view of a vacuum cleaner to which a suction tool according to the first to sixth embodiments of the present invention is connected.

FIG. 15 is a plan view of the suction tool for a vacuum cleaner, showing a conventional configuration, with an upper frame removed.

FIG. 16 is a sectional view of the suction tool.

[Explanation of symbols]

 Reference Signs List 6 dust collection chamber 7 pipe 8 hole 9 hollow part 10 communication port 11 jet air 12 pipe center line 14 dust collection chamber inner wall 15 rotation axis 16 convex part or brush body 17 air layer 18 gap 19 blade

Claims (7)

[Claims] 1. A dust collecting chamber having a lower opening, and a pipe provided in the dust collecting chamber and provided with a hollow part at least one of which is in communication with the outside air, wherein the hollow part, the dust collecting chamber, Vacuum cleaner suction tool provided with a plurality of communication ports that communicate with the vacuum cleaner. 2. The communication port according to claim 1, wherein the communication port is inclined with respect to a longitudinal center line of the pipe, and a rotary shaft for rotatably holding the pipe is provided on a side wall of the suction tool main body.
The suction device for a vacuum cleaner according to the above. 3. The suction tool for an electric vacuum cleaner according to claim 1, wherein a convex portion or a brush body that comes into contact with the surface to be cleaned during rotation is provided on a surface of the pipe. 4. The suction tool for a vacuum cleaner according to claim 2, wherein a gap communicating with the dust collecting chamber is provided between the inner wall of the pipe and the rotating shaft. 5. The suction tool for a vacuum cleaner according to claim 4, wherein a plurality of blades inclined with respect to a longitudinal center line of the pipe are provided on an inner wall of the pipe near the gap. 6. The suction tool for a vacuum cleaner according to claim 2, further comprising a drive source for rotating and driving the pipe. 7. A vacuum cleaner having a built-in electric blower and a suction port connected to communicate with the vacuum cleaner suction tool according to any one of claims 1 to 6.