JP2008086550A - Suction tool for electric vacuum cleaner and electric vacuum cleaner using the same - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To enable the efficient collection of dust without blowing away the dust at the front corner of a suction tool for electric vacuum cleaners. <P>SOLUTION: The suction tool 1 has a suction chamber 9 formed inside the suction tool, a rotary brush 10 so arranged as to rotate freely at a position that makes it approach the inner front wall of the suction chamber 9 in the radius 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 made to communicate with an opening part 14 opened at a front part of the suction chamber 9 relative to the suction tool 1 and forward from the center of the rotation of the rotary brush 10 and with a pipe 6 and with an air volume adjustment port 15 opened outside on the top surface of the suction tool 1 at the rear while an adjusting valve 16 is built between the opening on the side of the pipe 6 of the air path 13 and the air volume adjustment port 15 to be switchably closed, respectively. This makes the current of outside air 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 the dust on the front corner outside, thereby enabling 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 which is rotatably provided at a position close to a rotation radius on 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 center in 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 communicates with the suction tool at a front portion of the suction chamber and an opening opening forward of the rotation center of the rotary brush. The rear portion is configured to communicate with the pipe and the air volume adjusting port opened to the outside on the upper surface of the suction tool, and each between the opening on the pipe side of the air passage and the air volume adjusting port. An electric valve with an adjusting valve that rotates so as to be closed. It is obtained by a vacuum cleaner for the suction tool.

  According to the above invention, the suction air generated in the suction port by the opening provided in the front of the suction chamber can be generated also in the front part, and the suction brush is configured near the front wall of the suction tool. The dust on the front side of the tool can be efficiently collected by sucking the dust from the opening while scraping it out with the rotating brush.

  In addition, when the negative pressure in the suction chamber rises, a large negative pressure is also applied to the air passage side, and the suction tool is adsorbed to the surface to be cleaned, but when the negative pressure is generated in the air passage, the control valve The control port and the air passage are connected to operate to take in outside air, and the opening on the pipe side is closed. As a result, the air passage changes from the suction passage to the outside air inflow passage, reducing the negative pressure in the suction chamber to prevent adsorption, and sending the outside air to the front of the suction chamber. Thus, the action of blowing the dust at the front corner to the outside can be prevented as the airflow of the outside air becomes a conveying airflow that guides the dust to the suction chamber side, and the dust can be collected efficiently.

  The present invention can generate suction air generated in the suction port by the opening provided in front of the suction chamber also in the front part, and the rotary brush is configured in the vicinity of the front wall of the suction tool. The dust on the front side can be efficiently collected by sucking the dust on the front side from the opening while scraping it out with the rotating brush. In addition, when the negative pressure in the suction chamber rises, a large negative pressure is also applied to the air passage side, and the suction tool is adsorbed to the surface to be cleaned, but when the negative pressure is generated in the air passage, the control valve The control port and the air passage are connected to operate to take in outside air, and the opening on the pipe side is closed. As a result, the air passage changes from the suction passage to the outside air inflow passage, reducing the negative pressure in the suction chamber to prevent adsorption, and sending the outside air to the front of the suction chamber. Thus, the action of blowing the dust at the front corner to the outside can be prevented as the airflow of the outside air becomes a conveying airflow that guides the dust to the suction chamber side, and the dust can be collected efficiently.

  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 rotation radius is close to the inner front wall of the suction chamber, a pipe provided near the rear part of the suction tool and in the longitudinal direction, and an upper part of the suction tool And an air passage provided between the suction chamber and the suction passage, and the air passage communicates with the suction tool in front of the suction chamber and in front of the rotation center of the rotary brush. Is configured to communicate with a pipe and an air volume adjusting port opened to the outside on the upper surface of the suction tool, and each is switched between an opening on the pipe side of the air path and the air volume adjusting port. Vacuum cleaner suction tool comprising a regulating valve that rotates like The suction air generated in the suction port by the opening provided in the front of the suction chamber can be generated also in the front part, and the rotary brush is configured in the vicinity of the front wall of the suction tool. The dust on the front side can be efficiently collected by sucking the dust on the front side from the opening while scraping it out with the rotating brush. In addition, when the negative pressure in the suction chamber rises, a large negative pressure is also applied to the air passage side, and the suction tool is adsorbed to the surface to be cleaned, but when the negative pressure is generated in the air passage, the control valve The control port and the air passage are connected to operate to take in outside air, and the opening on the pipe side is closed. As a result, the air passage changes from the suction passage to the outside air inflow passage, reducing the negative pressure in the suction chamber to prevent adsorption, and sending the outside air to the front of the suction chamber. Thus, the action of blowing the dust at the front corner to the outside can be prevented as the airflow of the outside air becomes a conveying airflow that guides the dust to the suction chamber side, and the dust can be collected efficiently.

  In particular, the second invention is provided with a plurality of openings according to the first invention, and the air passages are divided so as to be introduced into the openings, respectively, so that the suction port is provided by the opening provided in front of the suction chamber. The suction air generated in the front is also generated in the front part, and the negative pressure is equalized by forming each air passage in the plurality of openings, and the suction wind generated in the openings is made uniform to collect dust. Therefore, the dust on the front side can be collected efficiently.

  In particular, the third invention divides the suction port where the pipe of the first invention or the second invention communicates with the suction chamber, the suction port, and communicates one with the suction chamber and the other as the air passage. It is configured to communicate, and by having the shape of the longitudinal section of the air passage narrow toward the front of the suction tool, the opening provided in front of the suction chamber and the suction port become a single air passage. As a result, the negative pressure generated from the pipe is efficiently applied to the air path, and further, by narrowing in the vicinity of the opening, the wind speed can be improved by the orifice effect and the suction wind force from the opening can be increased, so the dust on the front side is efficiently collected. Can be dusty.

  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, the air passage 13 opens toward the suction port 7, and the air passage 13 is formed so that the suction port 7 and the opening 14 communicate with each other. Further, an air volume adjusting port 15 configured to open to the outside in the vicinity of the concentrated air passage 13 and to communicate with the air passage 13 is formed in the top surface portion of the suction tool 1. As a result, the rear side of the air passage 13 has two openings, the suction port 7 of the pipe 6 and the air volume adjusting port 15.

  An adjusting valve 16 that rotates so as to switch and close each of them is provided between each opening so as to be rotatable. That is, when the suction port 7 is closed, the air volume adjusting port 15 is opened. In addition, the control valve 16 is set so that the reverse operation is possible, and the closing and opening are operated.

  In general, the regulating valve 16 is pivotally supported and is configured to be closed and opened by rotation. From the lower side, the valve is closed to the air volume adjusting port 15 by an urging force such as a spring when the pressure is higher than atmospheric pressure. In this structure, the valve itself opens and closes when it is applied, or the same operation is performed by the spring force of the thin plate (not shown in the biasing configuration by the spring).

  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 8. 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 suction port 7. When the negative pressure generated in the air passage 13 causes air to flow from each opening 14 and suction air is generated, the regulating valve 16 is pushed up and the air volume regulating port 15 is closed. In this state, each opening 14 generates suction air along the front wall of the suction chamber 9 and sucks dust in front of the suction tool 1. At this time, if the rotation direction of the rotary brush 10 is a direction that rotates from the bottom to the top when the suction tool 1 is viewed from the side, the dust scraped by the rotary brush 10 is sent to the opening 14 side and collected more. Increases dust capacity.

  From the above operation, the suction air generated in front of the suction chamber 9 by the opening 13 can intensively suck the dust in front of the suction tool 1, and the mechanical force of the rotary brush 10 is also applied to force the front of the suction tool 1. It is possible to collect dust.

  Further, depending on the state of the surface to be cleaned, the suction tool 1 is adsorbed and the inside of the suction chamber 9 becomes close to a vacuum. In this case, the negative pressures of the suction port 7 and the air passage 13 become the same, and 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 air volume adjusting port 15 and the suction port. 7 side is obstruct | occluded and external air and the opening part 14 are connected, and an external air wind is generated.

  When the outside air wind flows into the suction chamber 9, the negative pressure in the suction chamber is reduced to prevent adsorption, and the outside air wind is applied to the front side, so that the rotating brush 10 provided up to that time is mechanically charged with dust in the front corner. The air flow of the outside air can be prevented as an air flow that guides the dust to the suction chamber 9 side, and dust can be collected efficiently.

  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 a closing direction by a spring bias, and dust is strongly collected by the suction air generated by the negative pressure that is suddenly increased, and the mechanical force of the rotary brush 10 is also applied to strongly collect dust in front of the suction tool 1. It can also be dusty.

  It should be noted that the vacuum pressure of the suction tool 1 is increased when the airtightness is increased by, for example, placing a long bristle leg on a high-density carpet or applying a front part of the suction tool 1 to the wall on the carpet. Cheap.

  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 passage 14 Opening part 15 Air volume adjustment port 16 Adjustment 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 the vicinity of a substantially center in the longitudinal direction; and an upper portion of the suction tool and the suction chamber. An air path provided between the pipe and the suction tool in the rear part communicating with the opening part opened in front of the suction chamber and in front of the rotation center of the rotary brush with respect to the suction tool. An adjustment that is configured to communicate with an air volume adjustment port that is open to the outside on the upper surface of the air passage, and that rotates so as to switch between and block between the opening on the pipe side of the air passage and the air volume adjustment port. A vacuum cleaner suction tool that is a valve. 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. A suction port in which a pipe and a suction chamber communicate with each other, and the suction port is divided, one is communicated with the suction chamber, and the other is communicated with an air passage, and the shape of the longitudinal section of the air passage is a suction tool. The vacuum cleaner suction tool according to claim 1, wherein the vacuum cleaner suction tool is configured to narrow toward the front of the vacuum cleaner. 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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