JP2008086549A - Vacuum cleaner suction tool and vacuum cleaner using the same - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an electric vacuum cleaner which can collect dust efficiently without blowing away dust at the front corner of a suction tool for electric vacuum cleaners. <P>SOLUTION: The suction tool has a suction chamber 9 formed inside the suction tool, a rotary brush 10 which is so arranged as to rotate freely at a position that makes it approach the inner front wall of the suction chamber 9 in the diameter of rotation and an air path 13 provided between the upper part of the suction tool 1 and the suction chamber 9. The air path 13 is composed of an opening part 14 opened forward from the suction chamber 9 relative to the suction tool 1 and forward from the center of the rotation of the rotary brush 10 and an opening 15 made to communicate with the outside of the suction tool 1 at its rear. An adjusting valve 16 made movable to be closed or opened freely is built in the opening 15 and makes an outside airflow introduced from the opening part 14 turn to a carrier current to prevent the blowing away of dust otherwise caused by the rotary brush 10 against its action of blowing away dust at the front corner by a mechanical force, thereby accomplishing the efficient collection of dust. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a vacuum cleaner suction tool and a vacuum cleaner using the same, and particularly to dust removal performance at a front corner.

As a conventional vacuum cleaner suction tool of this type, as shown in FIG. 4, a suction tool main body 18 connected to the vacuum cleaner main body via a communication pipe 17, and a front surface of the suction tool main body 18 formed on the front surface of the suction tool main body 18. In the suction tool for vacuum cleaners provided with the suction inlet 19 connected with the pipe | tube 17, and the ventilation path 20 which is arrange | positioned in the vicinity of the said suction inlet 19, has an air inlet in an upper part, and has a jet nozzle in the cleaning surface side. In some cases, the ventilation path 20 is configured such that its cross-sectional area gradually narrows toward the jet port (for example, see Patent Document 1).
Japanese Patent Laid-Open No. 11-89767

  However, in the above conventional vacuum cleaner suction tool, air is applied to the portion close to the floor surface by the jet port, so that dust is scattered by the air jetted from the jet port, and dust that cannot be collected by the suction air is scattered. There was a problem that it would end up.

  In order to solve the above-described problems, the present invention provides a suction tool for a vacuum cleaner, a suction port that opens downward on the bottom surface of the suction tool, a suction chamber formed inside the suction tool, and the suction port. A rotary brush that is rotatably provided at a position where the rotation radius is close to the inner front wall of the suction chamber, a pipe that is provided at a rear portion of the suction tool and approximately in the middle of the longitudinal direction, and the suction An air passage provided between an upper portion of the tool and the suction chamber, and the air passage is open to the front portion of the suction chamber and forward of the rotation center of the rotary brush with respect to the suction tool. The portion is composed of an opening communicating with the outside of the suction tool, and the suction tool for an electric vacuum cleaner is configured with an adjustment valve that is movable in a hermetically sealed and openable manner.

  According to the above invention, the dust at the corner is mechanically removed by the rotating brush provided up to the front inner wall, and the air passage is adjusted by adjusting the opening amount of the adjusting valve provided in the opening by the negative pressure in the suction chamber. The outside air volume introduced into the suction chamber from the front opening is adjusted, and the outside air volume is increased by the negative pressure that increases when the suction tool comes into contact with the corner. Dust on the front side can be collected efficiently without worrying about blowing away.

  The present invention mechanically removes dust at the corners by a rotating brush provided up to the front inner wall and adjusts the opening amount of the adjusting valve provided in the opening by the negative pressure in the suction chamber, thereby The amount of outside air introduced into the suction chamber from the opening of the suction chamber is adjusted, and the outside air volume is increased by the negative pressure that increases when the suction tool comes into contact with the corner. Dust on the front side can be collected efficiently without worrying about flying away.

  The first invention is directed to a suction tool for a vacuum cleaner, a suction port that opens downward on a bottom surface of the suction tool, a suction chamber formed inside the suction tool, and the suction port, and A rotating brush provided rotatably at a position where the radius of rotation is close to the inner front wall of the suction chamber, a pipe provided in the rear part of the suction tool and in the vicinity of the middle of the longitudinal direction, and an upper part of the suction tool The air passage provided between the suction chamber and the suction chamber, and the air passage is suctioned at the front portion of the suction chamber with respect to the suction tool and at the opening portion and the rear portion opened in front of the rotation center of the rotary brush. Rotating with dust in the corners up to the front inner wall by using a vacuum cleaner suction tool that consists of an opening that communicates with the outside of the tool. It is removed mechanically with a brush and inside the suction chamber By adjusting the opening amount of the regulating valve provided at the opening with negative pressure, the amount of outside air introduced into the suction chamber from the opening in front of the air passage is adjusted, and the negative pressure increases when the suction tool comes into contact with the corner. The amount of outside air can be increased by the pressure, and the dust on the front side can be efficiently collected without worrying about blowing the dust at the front corner together with the mechanical force of the rotating brush.

  In particular, the second invention is provided with a plurality of openings according to the first invention, and each air passage is formed in a plurality of openings by dividing the air passage so that it can be introduced into each of the openings. By doing so, the negative pressure is equalized and the exhaust wind force generated in the opening is made uniform, so that the dust collecting ability can be enhanced, so that the dust on the front side can be collected efficiently.

  In the third invention, in particular, the longitudinal cross-sectional area of the air passage of the first invention or the second invention is narrowed toward the front of the suction tool, thereby narrowing the vertical cross-sectional area in the vicinity of the opening. Thus, the wind speed can be improved by the orifice effect and the suction wind force from the opening can be increased, so that the dust on the front side can be collected efficiently.

  In particular, the fourth aspect of the invention relates to a vacuum cleaner comprising the vacuum cleaner suction tool according to any one of the first to third aspects of the invention in communication with an electric blower that generates suction air contained in the vacuum cleaner body. By doing so, it is possible to efficiently collect dust without leaving dust in every corner of a room or the like, and it is possible to provide an easy-to-use vacuum cleaner.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. Note that the present invention is not limited to the embodiments.

(Embodiment 1)
1 is a central longitudinal sectional view showing a suction tool according to Embodiment 1 of the present invention, FIG. 2 is a plan view of the suction tool with an upper member removed, and FIG. 3 is an overall perspective view of a vacuum cleaner equipped with the suction tool. FIG.

  1 to 3, reference numeral 1 denotes a suction tool, and the suction tool 1 is connected to a vacuum cleaner 2 via a hose 3 and an extension pipe 4. The inside of the hose 3 and the extension pipe 4 is hollow, and the internal air is sucked and discharged by the electric blower 5 arranged behind the vacuum cleaner 2 to be in a vacuum state and negative pressure is applied. A suction wind is generated.

  A pipe 6 that is rotatably supported in the front-rear direction or the left-right direction is provided in the rear part of the suction tool 1 in the front-rear direction, in the vicinity of the approximate center. The pipe 6 has a hollow inside, and one end is connected to the electric cleaner 5 through the extension pipe 4 or the hose 3. The other is connected to the inside of the suction tool 1, and the opening connected inside the suction tool 1 is used as the suction port 7.

  On the other hand, the bottom surface of the suction tool 1 has a suction port 8 that opens downward, connects the suction port 8 and the suction port 7, and a space formed inside the suction tool 1 is configured as a suction chamber 9. Inside the suction chamber 9, there is provided a rotating brush 10 that faces the suction port 8 and is rotatably supported at a position where the rotation radius is close to the inner front wall of the suction chamber 9. The rotating brush 10 is configured so as to be rotated by being transmitted with power by a drive source 11 configured on the left or right side where the pipe 6 is installed or coaxially. In general, when the drive source 11 is arranged on either the left or right side of the pipe 6, the rotary brush 10 and the drive source 11 are stretched by a belt 12. In general, an electric motor (motor), a turbine, or the like is used for the drive source 11.

  A space surrounded by the inner top surface of the suction tool 1 and a partition provided at the upper part of the suction chamber 9 is installed as an air passage 13. The suction chamber 9 is formed in a substantially cylindrical shape, the air passage 13 is also formed along the cylindrical surface, and the longitudinal cross-sectional shape of the air passage 13 is formed so as to narrow toward the front portion of the suction tool 1. is there. The air passage 13 is provided with a plurality of openings as openings 14 in the front portion of the suction chamber 9 so as to communicate with the suction chamber 9. The opening 14 is in front of the rotation axis center of the rotary brush 10 and is opened along the inner front wall of the suction chamber 9. Moreover, it is desirable to open three or more openings 14 with respect to the longitudinal direction of the suction tool 1, and the locations are formed at the center and both left and right ends with respect to the longitudinal direction of the suction tool 1.

  Each of the plurality of openings 14 is formed with an air passage 13 so that the air passages 13 are gathered at a location corresponding to the rear portion of the suction tool 1. The air passages 13 are gathered in one place at the rear portion and formed so as to be branched into the openings 14.

  At the point where the air passage 13 is gathered, an opening 15 is formed in the top surface portion of the suction tool 1 so as to open near the gathered air passage 13 and communicate with the air passage 13. Thus, the air passage 13 forms a single flow path by the opening 15 and the opening 14. In addition, an adjustment valve 16 that operates to close and open the opening 15 is configured. In general, the regulating valve 16 is pivotally supported and is configured to be closed and opened by turning. The valve is closed from below by an urging force such as a spring, and the valve is closed at a pressure higher than atmospheric pressure, and is opened when negative pressure is applied. A structure in which the valve itself moves up and down or a structure in which the same operation is performed by a spring force of a thin plate (not shown).

  Next, the operation and action will be described. When the electric vacuum cleaner 2 is operated, the electric blower 5 is moved, the air in front of the electric blower 5 is sucked, and the air is discharged rearward so that a vacuum state is applied and negative pressure is applied. This generates suction air. This negative pressure is transmitted to the suction tool 1 through the hose 3 and the extension pipe 4. The generated negative pressure becomes suction air in the suction tool 1 and can suck dust on the surface to be cleaned.

  The negative pressure is first transmitted through the pipe 6 to the suction port 8 through the suction port 7 and the suction chamber 9. Dust is mainly collected from the suction port 8.

  When the drive source 11 is an electric motor, the rotary brush 10 can be rotated by receiving power from the vacuum cleaner 2. In the case of a turbine, the turbine is driven by suction air generated by negative pressure, and the power is transmitted. The rotating brush 10 rotates to scrape the surface to be cleaned by mechanical force and apply a polishing operation to collect dust. Dust collected by the rotating brush 10 is sucked through the suction chamber 9.

  On the other hand, the generated negative pressure is also transmitted to the air passage 13 through the opening 14. For example, when the suction tool 1 comes into contact with the corner, the regulating valve 16 is pushed down by the negative pressure action of the air passage 13 and the air flowing in from the outside air, thereby opening the opening 15 and allowing the outside air and the opening 14 to communicate with each other. The outside air introduction wind is generated. The outside air introduction air flows into the dust suction chamber 9 through the opening 14 to reduce the negative pressure in the suction chamber 9 to prevent adsorption, and by applying the outside air introduction air to the front side, The rotating brush 10 provided can prevent the dust at the front corner from being blown outward by mechanical force, so that the air flow of the outside air introduction air can be prevented as a conveying air flow that guides the dust to the suction chamber 9 side, and the dust collection is performed efficiently. Can do. In particular. The opening amount of the regulating valve 16 is increased by the negative pressure that is increased when the suction tool 1 comes into contact with the corner portion, thereby increasing the outside air flow amount and strengthening the conveying air flow. The dust on the front side can be collected efficiently without worrying about blowing away the dust.

  Further, by adjusting the opening amount of the regulating valve 16 by the negative pressure inside the suction chamber 9, the amount of outside air introduced into the suction chamber 9 from the opening 14 in front of the air passage 13 is adjusted, and the suction tool 1 The moment when the suction tool 1 is released from the corner after the negative pressure in the suction chamber 9 is lowered by increasing the open amount of the regulating valve 16 by increasing the open amount of the regulating valve 16 due to the negative pressure that increases when it comes into contact with the part The valve 16 operates in the closing direction, and dust is strongly collected by the suction air generated by the negative pressure that is rapidly increased, and the dust in front of the suction tool 1 can be strongly collected by applying the mechanical force of the rotating brush 10. It can be done.

  As described above, the vacuum cleaner suction tool according to the present invention and the vacuum cleaner using the vacuum cleaner can efficiently collect dust without leaving dust in every corner of a room or the like, and are easy to use. It can be cleaned comfortably at all times, and can be widely applied to household and commercial vacuum cleaners.

Central longitudinal cross-sectional view which shows the suction tool in Embodiment 1 of this invention Top view of the suction tool with the upper member removed Whole perspective view of a vacuum cleaner equipped with the suction tool Central longitudinal sectional view showing a conventional suction tool

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Suction tool 6 Pipe 8 Suction port 9 Suction chamber 10 Rotating brush 13 Air path 14 Opening part 15 Opening 16 Control valve

Claims (4)

A suction tool for a vacuum cleaner, a suction port that opens downward on the bottom surface of the suction tool, a suction chamber formed inside the suction tool, and facing the suction port and in front of the suction chamber A rotating brush provided rotatably at a position where the radius of rotation is close to the wall; a pipe provided at a rear portion of the suction tool and in a substantially central portion in the longitudinal direction; an upper part of the suction tool; and the suction chamber. An air passage provided between the air passage and the air passage communicating with the outside of the suction device at the front portion of the suction chamber and at the front portion of the rotary brush with respect to the rotation center and the rear portion with respect to the suction device. A suction tool for a vacuum cleaner comprising an opening, wherein the opening comprises a regulating valve that is movable in a sealed and openable manner. The vacuum cleaner suction tool according to claim 1, wherein a plurality of openings are provided, and the air passage is divided so as to be introduced into the openings. The suction tool for a vacuum cleaner according to claim 1 or 2, wherein the shape of the longitudinal section of the air passage is narrowed toward the front of the suction tool. The vacuum cleaner provided with the suction tool for vacuum cleaners of any one of Claims 1-3 connected to the electric blower which generate | occur | produces the suction wind which a vacuum cleaner main body contains.

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