JP2004016424A - Suction port body and vacuum cleaner - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a suction port body capable of sucking dust efficiently at moving forward and backward of a suction port main body. <P>SOLUTION: The suction port body includes a suction port main body 11 provided with a dust suction chamber and of which the bottom face is provided with a suction opening 15 to the suction chamber; and a front rotary body 20 provided in front of the suction opening 15 to be freely rotated and rotary driven by a friction force caused against a face to be cleaned with moving of the main body 11. The front rotary body 20 is rotated forward in response to the forward direction at the moving forward of the main body 11 to form a gap between the body 20 and the face to be cleaned, communicates external space in front of the main body 11 with the suction opening 15 via the gap, rotated forward in response to the backward direction at the moving backward of the main body 11 to tightly contact to the face to be cleaned, and breaks the communication of the external space in front of the main body 11 with the suction opening 15. <P>COPYRIGHT: (C)2004,JPO

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a suction opening having an opening in front of a suction opening for efficiently sucking dust in front of the suction opening main body, and a vacuum cleaner using the suction opening.
[0002]
[Prior art]
Generally, a suction port body having a dust suction chamber is provided at a suction port body of a vacuum cleaner, and a suction opening communicating with the dust suction chamber is formed on a bottom surface of the suction port body. Among such suction port bodies, there is known one in which an opening is formed in front of a suction opening. If an opening is formed in front of the suction opening, during cleaning, the suction port main body is advanced, and dust in front of the suction port main body can be efficiently sucked through the opening, and cleaning can be performed. Work efficiency is improved.
[0003]
[Problems to be solved by the invention]
However, in the above-described conventional technique, the opening formed in front of the suction opening remains open both when the suction opening main body moves forward and when the suction opening retreats, so that the opening flows into the suction opening through the opening. There is a problem that the air flow velocity at the suction opening becomes slower by the amount of air to be generated, the suction force at the suction opening is reduced, and dust cannot be efficiently sucked.
[0004]
An object of the present invention is to provide a suction port body that can efficiently suck dust when the suction port main body advances and retreats, and a vacuum cleaner having the suction port body.
[0005]
[Means for Solving the Problems]
In order to solve the above problem, a feature of the present invention is that at least one of a front side and a rear side of the suction opening is provided with a means for restricting inflow of external air into the suction opening according to a moving direction of the suction port main body. It is. For example, the present invention provides a suction port main body provided with a dust suction chamber and a suction opening to the dust suction chamber on the bottom surface, and a rotatable front of the suction opening provided for moving the suction port main body. And a front rotating body that is rotated and driven by a frictional force generated between the suction body and the surface to be cleaned, and the front rotating body moves in a forward direction corresponding to a forward direction when the suction port main body advances. It is rotated to form a gap between the surface to be cleaned, and the external space in front of the suction port main body and the suction opening communicate with each other through the gap. The suction port is characterized in that it is rotated in the forward direction and is in close contact with the surface to be cleaned, thereby blocking communication between the external space in front of the suction port main body and the suction opening.
[0006]
According to the above configuration, when the suction port main body is advanced, the front rotating body is rotated in the forward direction corresponding to the forward direction by the frictional force between the front rotating body and the surface to be cleaned, and a gap is formed between the front rotating body and the surface to be cleaned. Is formed, and external air in front of the suction port main body flows into the suction opening through the gap. At this time, dust in front of the suction port main body also flows into the suction opening together with the external air. Further, when the suction port main body is retracted, the front rotating body is rotated in the forward direction corresponding to the retreating direction by a frictional force between the front rotation body and the surface to be cleaned, and is brought into close contact with the surface to be cleaned, and the front of the suction port main body. Is restricted from flowing into the suction opening. As a result, a reduction in suction force at the suction opening can be suppressed, and dust can be efficiently sucked.
[0007]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, embodiments of the present invention will be described with reference to the drawings.
FIG. 1 is an overall perspective view of a vacuum cleaner according to the present invention. In FIG. 1, reference numeral 1 denotes a cleaner main body, 2 denotes a dust collecting bag such as a paper pack filter disposed in a dust collecting chamber (not shown) of the cleaner main body 1, and 3 denotes a dust collecting bag provided in a rear portion of the cleaner main body 1. This is an electric blower that applies suction negative pressure to the dust collection chamber. Reference numeral 4 denotes a dust collection hose connected to the cleaner main body 1 and communicated with the dust collection bag 2, and reference numeral 5 denotes a hand-operated tube provided at a free end of the dust collection hose 4.
[0008]
The operation panel 6 is provided with an operation panel 6, and the operation panel 6 is provided with a switch and the like for selecting a suction air volume of the electric blower 3. Further, a suction port body 10 is connected to the hand operation pipe 5 via an extension pipe 7. The suction port body 10 has a suction port main body 11 extending left and right, and a connection pipe 8 attached to a rear portion of the suction port main body 11. This connection pipe 8 is connected to the extension pipe 7.
[0009]
(Embodiment 1)
2 to 5 show the first embodiment. In the present embodiment, the suction port main body 11 is provided with a main body case 12 on the outside as shown in FIG. 4 or FIG. 5, and the main body case 12 is connected to a lower case 13 and the lower case 13. It is composed of an upper case 14 and the like.
[0010]
A suction opening 15 for sucking dust is opened on the bottom surface of the lower case 13, and a rotating brush 16 is rotatably arranged in the suction opening 15. The rotary cleaning body 16 has a blade 16A and a brush 16B, and is rotationally driven by a motor (not shown) provided in the suction port main body 11. In FIG. 2, the rotating brush 16 is omitted.
[0011]
As shown in FIG. 2, a detection roller 17 that rotates with the movement of the suction port main body 11 is provided on the bottom surface of the lower case 13. Retreat is detected. Then, the rotation direction of the motor is controlled based on the detection result of the detection roller 17. Further, a rear wheel 18 is attached to a rear portion of the lower case 13.
[0012]
In the present embodiment, a front rotating body 20 is rotatably provided in front of the suction opening 15. At the front end of the inlet main body 11, a recess 21 communicating with an external space in front of the inlet main body 11 is formed, and the front rotating body 20 is disposed in the recess 21. A vertical wall 22 is provided between the recess 21 and the suction opening 15, and a lower end surface of the vertical wall 22 forms a gap G between the vertical wall 22 and the surface M to be cleaned.
[0013]
As shown in FIG. 3, the front rotating body 20 has a substantially cylindrical shape, and flat surfaces 23, 24, 25 are formed at both ends and a central portion, and a cylindrical portion 26 is formed between the flat surfaces 23 and 25. , The columnar portions 27 are provided between the flat surfaces 24 and 25, respectively. Also, three projections 25A are formed on the flat surface 25 at the center.
[0014]
Support shafts 28 and 29 are provided on both end surfaces of the front rotating body 20, and these support shafts 28 and 29 are rotatably attached to both side walls of the recess 21 of the suction port main body 11. Further, the wiping member 20A is attached to the outer peripheral surface of the front rotating body 20 excluding the flat surfaces 23, 24, and 25, and when the front rotating body 20 is disposed in the recess 21, The wiping member 20A comes into close contact with the inner surface.
[0015]
Although not shown in the figure, the rotation angle of the front rotating body 20 is set to a range of 90 degrees as shown in FIG. 5 on both end surfaces of the front rotating body 20 or both side walls of the recess 21. A restricting stopper is provided.
[0016]
Further, in the present embodiment, cut portions 13A and 13B are formed on both sides of the front rotating body 20 at the front end of the lower case 13, so that dust is not clogged even when the suction port main body 11 is vigorously advanced. Not to be.
[0017]
In the above configuration, when the suction port main body 11 is advanced, as shown in FIG. 4, the front rotating body 20 is in close contact with the surface M to be cleaned, and corresponds to the forward direction (counterclockwise direction indicated by an arrow). , And the flat surface 25 faces downward. At this time, since the wiping member 20A is attached to the outer peripheral surface of the front rotating body 20, the front rotating body 20 moves in the forward direction corresponding to the forward direction due to the frictional force generated between the front rotating body 20 and the surface M to be cleaned. Rotates easily. As a result, a large gap (substantially equal to the gap G) is formed between the front rotating body 20 and the surface M to be cleaned, so that the external space in front of the suction port main body 11 and the suction opening 15 communicate with each other, External air in front of the suction port main body 11 can easily flow into the suction opening 15 through the gap, and dust in front of the suction port main body 11 is sucked into the suction opening 15 with the flow of the external air.
[0018]
When the suction port main body 11 is retracted, as shown in FIG. 5, the front rotating body 20 is brought into close contact with the surface M to be cleaned and is rotationally driven in a forward direction (clockwise direction indicated by an arrow) corresponding to the retreating direction. , With the flat surface 25 facing forward. Also at this time, the wiping member 20A on the outer peripheral surface of the front rotating body 20 generates a frictional force with the surface M to be cleaned, and the front rotating body 20 easily rotates in the forward direction corresponding to the retreating direction. . As a result, since the lower part of the front rotating body 20 is in close contact with the surface to be cleaned M and the upper part of the front rotating body 20 is close to the inner surface of the recess 21, external air in front of the suction port main body 11 is As a result, it becomes difficult to flow into the suction opening 15, and as a result, the negative pressure in the suction opening 15 increases, and the dust suction force when the suction port main body 11 is retracted is improved.
[0019]
According to the present embodiment, since three protrusions 25A are formed on the flat surface 25 of the front rotating body 20, the flat surface 25 and the surface M to be cleaned, which are formed when the suction port main body 11 advances, are formed. The cross-sectional area of the flow path in the gap between the two becomes smaller, and the flow rate of the external air into the suction opening 15 can be increased.
[0020]
(Embodiment 2)
6 and 7 show the second embodiment. In the present embodiment, the rear rotating body 30 is provided behind the suction opening 15. That is, a recess 31 is formed behind the suction opening 15, and the rear rotating body 30 is rotatably arranged in the recess 31. The shape of the rear rotating body 30 is the same as that of the front rotating body 20 shown in FIG. 3, and has a flat surface 35 on which a projection 35A is provided.
[0021]
Also in the present embodiment, stoppers for restricting the rotation angle of the rear rotating body 30 to a range of 90 degrees as shown in FIG. Is provided.
[0022]
In the above configuration, when the suction port main body 11 is retracted, as shown in FIG. 6, the rear rotating body 30 is brought into close contact with the surface M to be cleaned and rotates in a forward direction (clockwise direction indicated by an arrow) corresponding to the retreating direction. It is driven to move and the flat surface 35 faces downward. As a result, a large gap is formed between the rear rotating body 30 and the surface M to be cleaned, so that the external air behind the suction port main body 11 can easily flow into the suction opening 15 through the gap. The dust behind the suction port main body 11 is sucked in with the inflow of the external air.
[0023]
When the suction port main body 11 is advanced, as shown in FIG. 7, the rear rotating body 30 is in close contact with the surface M to be cleaned and is driven to rotate in the forward direction (counterclockwise direction indicated by the arrow) corresponding to the forward direction. , With the flat surface 35 facing rearward. As a result, the lower part of the rear rotating body 30 is in close contact with the surface M to be cleaned, and the upper part of the rear rotating body 30 is close to the inner surface of the recess 31. As a result, the negative pressure at the suction opening 15 is increased, and the dust suction force when the suction port main body 11 is advanced is improved.
[0024]
(Embodiment 3)
8 and 9 show the third embodiment. In the present embodiment, a front rotating body 20 and a rear rotating body 30 are provided before and after the suction opening 15. That is, the front rotating body 20 shown in the first embodiment is arranged in front of the suction opening 15 and the rear rotating body 30 shown in the second embodiment is arranged behind the suction opening 15 so as to be rotatable. I have.
[0025]
In the above configuration, when the suction port main body 11 is advanced, the front rotating body 20 and the rear rotating body 30 come into close contact with the surface M to be cleaned and correspond to the forward direction, respectively, as shown in FIG. The front rotating body 20 is rotated, and the front rotating body 20 faces the flat surface 25 downward, and the rear rotating body 30 faces the flat surface 35 backward. Therefore, the external air in front of the suction port main body 11 can easily flow into the suction opening 15 through the gap between the flat surface 25 of the front rotating body 20 and the surface M to be cleaned. The outside air behind 11 is blocked by the rear rotating body 30 and is less likely to flow into the suction opening 15. As a result, it is possible to prevent external air from flowing into the suction opening 15 excessively, and to prevent a decrease in negative pressure in the suction opening 15.
[0026]
When the suction port main body 11 is retracted, the front rotating body 20 and the rear rotating body 30 are respectively brought into close contact with the surface M to be cleaned and are respectively rotated in the forward direction corresponding to the retreating direction, as shown in FIG. When driven, the front rotating body 20 faces the flat surface 25 forward, and the rear rotating body 30 faces the flat surface 35 downward. For this reason, the external air behind the suction port main body 11 can easily flow into the suction opening 15 through the gap between the flat surface 35 of the rear rotating body 30 and the surface M to be cleaned. Is blocked by the front rotating body 20 and hardly flows into the suction opening 15. As a result, in this case as well, it is possible to suppress the external air from flowing into the suction opening 15 excessively, and it is possible to prevent a decrease in the negative pressure in the suction opening 15.
[0027]
【The invention's effect】
As described above, according to the present invention, it is possible to obtain a suction port body capable of efficiently sucking dust when the suction port body advances and retreats, and a vacuum cleaner having the suction port body. .
[Brief description of the drawings]
FIG. 1 is an overall perspective view of a vacuum cleaner according to the present invention.
FIG. 2 is a bottom perspective view of the suction port main body according to the first embodiment.
FIG. 3 is a perspective view of a front rotating body or a rear rotating body.
FIG. 4 is a cross-sectional view of a main part when the suction port main body shown in FIG. 2 is advanced.
FIG. 5 is a cross-sectional view of a main part when the suction port main body shown in FIG. 2 is retracted.
FIG. 6 is a cross-sectional view of a main part when the suction port main body according to the second embodiment is retracted.
FIG. 7 is a cross-sectional view of a main part when the suction port main body according to the second embodiment is advanced.
FIG. 8 is a cross-sectional view of a main part when the suction port main body according to the third embodiment is advanced.
FIG. 9 is a cross-sectional view of main parts when the suction port main body according to the third embodiment is retracted.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Vacuum cleaner main body 10 Suction opening body 11 Suction opening main body 15 Suction opening 20 Front rotation body 20A Wiping member 21 Depression 25 Flat surface 25A Projection 30 Rear rotation body 31 Depression 35 Flat surface 35A Projection

Claims (5)

A suction port body provided with a dust suction chamber and a suction opening to the dust suction chamber on the bottom surface; and a rotatably provided front of the suction opening, and a surface to be cleaned as the suction port body moves. And a front rotating body that is rotationally driven by a frictional force generated between
The front rotating body is rotated in the forward direction corresponding to the forward direction when the suction port main body advances to form a gap between the front rotation body and the surface to be cleaned, and the external space in front of the suction port main body and the suction opening are formed. When the suction port main body is retracted, the suction port body is rotated in the forward direction corresponding to the retreat direction and closely adheres to the surface to be cleaned, and the external space in front of the suction port main body and the suction opening are connected. An inlet body characterized in that it blocks communication. A suction port body provided with a dust suction chamber and having a suction opening to the dust suction chamber on the bottom surface; and a rotatable rear side of the suction opening, and a surface to be cleaned as the suction port body moves. And a rear rotating body that is rotationally driven by a frictional force generated between
When the suction port main body is retracted, the rear rotating body is rotated in the forward direction corresponding to the retreat direction to form a gap between the suction port main body and the surface to be cleaned, and an external space behind the suction port main body and the suction opening are formed. When the suction port main body moves forward, the suction port body is rotated in the forward direction corresponding to the forward direction and closely contacts the surface to be cleaned, and the communication between the external space behind the suction port main body and the suction opening is established. A suction opening body characterized in that it blocks off air. A suction port body provided with a dust suction chamber and a suction opening to the dust suction chamber on the bottom surface; and a rotatably provided front of the suction opening, and a surface to be cleaned as the suction port body moves. And a frictional force generated between the front rotating body that is rotationally driven by the frictional force generated between the suction port and the surface to be cleaned, which is rotatably provided behind the suction opening, and moves as the suction port body moves. And a rear rotating body that is driven to rotate by
The front rotating body is rotated in the forward direction corresponding to the forward direction when the suction port main body advances to form a gap between the front rotation body and the surface to be cleaned, and the external space in front of the suction port main body and the suction opening are formed. When the suction port main body is retracted, the suction port body is rotated in the forward direction corresponding to the retreat direction and closely adheres to the surface to be cleaned, and the external space in front of the suction port main body and the suction opening are connected. While blocking communication,
When the suction port main body is retracted, the rear rotating body is rotated in the forward direction corresponding to the retreat direction to form a gap between the suction port main body and the surface to be cleaned, and an external space behind the suction port main body and the suction opening are formed. When the suction port main body moves forward, the suction port body is rotated in the forward direction corresponding to the forward direction to closely contact the surface to be cleaned, and the communication between the external space behind the suction port main body and the suction opening is performed. A suction opening body characterized in that it blocks off air. The suction port according to any one of claims 1 to 3,
A suction port body, wherein a wiping member for wiping the surface to be cleaned is provided on the two rotating bodies in close contact with the surface to be cleaned. An electric vacuum cleaner comprising the suction opening according to any one of claims 1 to 4.

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