JP2004049776A - Suction port body and vacuum cleaner - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a suction port body reducing traveling load when advancing and retreating the suction port body. <P>SOLUTION: This suction port body is provided with a suction opening communicated with a dust suction chamber in its bottom surface. A turning body 20 turned by a frictional force produced between itself and a cleaning object surface M when the moving of the suction port body is rotationally provided in the front of the suction opening. Raised clothes 30 and 31 are provided in the outer circumferential surface of the turning body 20 along the circumferential direction of the turning body 20 by divided into a one side semicircle part (a) and the other side semicircle part (b). The raised cloth 30 provided in one side semicircle part (a) contacts with the cleaning object surface M when advancing and having a raising 30A contacting with the cleaning object surface M with its tip facing rearward the suction port body, while the raised cloth 31 provided in the other side semicircle part (b) contacts with the cleaning object surface M when retreating the suction port body and having a raising 31A contacting with the cleaning object surface M with its tip facing frontward the suction port body. <P>COPYRIGHT: (C)2004,JPO

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a suction opening having an opening formed in front of a suction opening, and a rotating body provided rotatably in the opening, 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]
However, the opening formed in front of the suction opening remains open both when the suction opening body advances and retreats, so that only the amount of air that flows into the suction opening through the opening is sucked. The air flow velocity at the opening becomes slow, the suction force at the suction opening decreases, and dust cannot be sucked in efficiently.
[0004]
Therefore, a rotating body having a cut surface formed in a part of the outer peripheral surface is rotatably provided at the opening, and the rotating body is provided with friction generated between the suction body and the surface to be cleaned as the suction port body advances or retreats. The same applicant has proposed a suction port body that is driven to rotate by force. When the suction port main body advances, the rotary body is rotated in the forward direction corresponding to the forward direction, so that the cut surface faces the surface to be cleaned, and a gap is formed between the rotary member and the surface to be cleaned. This allows the external space in front of the suction port main body to communicate with the suction opening via the gap, so that dust in front of the suction port main body can be efficiently sucked through the gap.
[0005]
Further, when the suction body is retracted, the rotating body is rotated in the forward direction corresponding to the retreating direction and closely adheres to the surface to be cleaned, thereby cutting off the communication between the external space in front of the suction body and the suction opening. Accordingly, the amount of air flowing into the suction opening through the opening when the suction port main body is retracted is suppressed, and a reduction in suction force at the suction opening is prevented, so that dust can be efficiently sucked.
[0006]
[Problems to be solved by the invention]
By the way, usually, a raised cloth having a large number of raised brushes is provided on the outer peripheral surface of the rotating body. When such a raised cloth is provided on the outer peripheral surface of the rotating body, the raised surface of the raised cloth is brought into close contact with the surface to be cleaned at the time of cleaning. The surface to be cleaned can be wiped off by brushing.
[0007]
However, conventionally, since one kind of raising cloth is provided on the entire outer peripheral surface of the rotating body, there is a disadvantage that a running load (load) when the suction port main body is moved forward or backward is increased. That is, there are two types of raised cloth, one in which the raised cloth is raised and the other in which the raised cloth is lying down. The running load of the suction port main body increases due to frictional resistance between the blanket and the surface to be cleaned. Further, in the latter rotating body provided with a raised cloth, either the forward or backward movement of the suction main body moves the suction main body against the direction of the hair tip, and in this case, the running load is large. Become.
[0008]
An object of the present invention is to provide a suction port body capable of reducing a running load generated when the suction port body moves forward and backward, and a vacuum cleaner having the suction port body.
[0009]
[Means for Solving the Problems]
In order to solve the above problems, a feature of the present invention is that a raising cloth is provided on a rotating body while taking into account the direction of raising of the raising cloth. 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. A rotating body driven to rotate by a frictional force generated between the rotating body and the cleaning surface. The outer peripheral surface of the rotating body has one half-circumferential portion and the other side along the circumferential direction of the rotating body. A raised cloth is provided divided into a half-peripheral part, and the raised cloth provided on the one half-peripheral part is in contact with the surface to be cleaned when the suction port body advances, and the bristle tip is directed rearward of the suction port body. The brushed cloth provided on the other half of the circumference has a raised brush that comes into contact with the surface to be cleaned in the state, and the brushed cloth contacts the surface to be cleaned when the suction port body retreats, and the bristle tip faces forward of the suction port body. It is characterized in that it has a raised brush that comes into contact with the surface to be cleaned in a state where it is in contact.
[0010]
According to the above configuration, when the suction port main body moves forward, one side half of the rotating body contacts the surface to be cleaned, and when the suction port body retreats, the other side half circumference of the rotating body contacts the cleaning surface. At this time, the raising of the raising cloth provided on the one half peripheral surface comes into contact with the surface to be cleaned in a state in which the bristle ends face the rear of the suction port main body, and the raising of the raising cloth provided on the other half peripheral surface is: Since the tip of the brush comes into contact with the surface to be cleaned in a state in which the tip of the brush faces forward of the suction port body, the frictional resistance between the raised surface of the brushed cloth and the surface to be cleaned when the suction port body is moved forward or backward is reduced. It is possible to reduce the running load of the suction port main body.
[0011]
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.
[0012]
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.
[0013]
(Embodiment 1)
2 to 8 show the first embodiment. In the present embodiment, as shown in FIG. 5 or FIG. 6, the suction port main body 11 is provided with a main body case 12 on the outside, and the main body case 12 is connected to the lower case 13 and the lower case 13. It is composed of an upper case 14 and the like.
[0014]
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.
[0015]
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. A rear wheel 18 (see FIG. 5 or FIG. 6) is attached to a rear portion of the lower case 13.
[0016]
In the present embodiment, a rotating body 20 is provided rotatably in front of the suction opening 15. At the front end of the inlet main body 11, a recess 21 communicating with the external space in front of the inlet main body 11 is formed, and the rotating body 20 is arranged 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.
[0017]
As shown in FIG. 3, the rotating body 20 has a cylindrical shape having flat surfaces 23, 24, 25 formed at both ends and a central portion. Protrusions 27 are provided between 24 and 25, respectively. Support shafts 28 and 29 are provided on both end surfaces of the rotating body 20, and these support shafts 28 and 29 rotate on both wall surfaces 33 and 34 (see FIGS. 7 and 8) of the recess 21 of the suction port main body 11. Can be attached freely. Further, on the outer peripheral surface of the rotating body 20 excluding the flat surfaces 23, 24, 25, two raised cloths 30, 31 are attached.
[0018]
FIG. 4 is a cross-sectional view taken along the line AA of FIG. 3 when the flat portion 25 is directed downward. In FIG. 4, the right side is the rear of the suction port main body having the rotating body 20, and the left side is the front of the suction port main body. The raised cloth 30 is provided on one half-peripheral part a along the circumferential direction of the rotating body 20, and the raised cloth 31 is provided on the other half circumferential part b along the circumferential direction of the rotating body 20. The napping cloth 30 has a napping 30A, and the napping 30A comes into contact with the surface M to be cleaned with the tip of the napping facing the rear of the suction port main body. The raising cloth 31 has a raising 31A, and the raising 31A comes into contact with the surface M to be cleaned with the tip of the raising facing the front of the suction port main body (see FIG. 6).
[0019]
As shown in FIGS. 7 and 8, an arc groove 35 is formed on both wall surfaces 33 (34 is an opposite wall surface) of the recess 21, and the arc groove 35 is formed on both end surfaces of the rotating body 20. The provided protrusion 36 (see FIG. 3) is fitted. Thus, the rotation angle of the rotating body 20 is restricted to a range of 90 degrees as shown in FIG. In FIGS. 7 and 8, reference numeral 37 denotes a bearing hole for the support shafts 28 and 29 on both end surfaces of the rotating body 20.
[0020]
Further, in the present embodiment, as shown in FIG. 2, cut portions 13A and 13B are formed on both sides of the rotating body 20 at the front end of the lower case 13, and the suction port main body 11 is moved forward with vigor. Even garbage is not clogged.
[0021]
In the above configuration, when the suction port main body 11 is moved forward, as shown in FIG. 5, the rotating body 20 comes into close contact with the surface M to be cleaned and rotates in a forward direction (counterclockwise direction indicated by an arrow) corresponding to the forward direction. It is driven to move and the flat surface 25 faces downward. At this time, when the other half-peripheral portion b is in contact with the surface M to be cleaned, the rotating body 20 moves in the forward direction of the suction port main body 11 due to the frictional force generated between the raised cloth 31 and the surface M to be cleaned. And easily pivots in the forward direction. Further, when the one side half-periphery portion a is in contact with the surface M to be cleaned, the raised brush 30A of the brushed cloth 30 comes into contact with the surface M to be cleaned with the tip of the brush facing the rear of the suction port main body. The frictional force between the surface 30 and the surface M to be cleaned is reduced, so that the traveling load when the suction port main body 11 moves forward can be reduced. When the suction port main body 11 is advanced, the protrusions 36 on both end surfaces of the rotating body 20 are guided by the arc grooves 35, and the rotating body 20 stops rotating in the state shown in FIG. do not do.
[0022]
When the suction port main body 11 is retracted, as shown in FIG. 6, the 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. The surface 25 is turned forward. At this time, when the one side half-peripheral portion a is in contact with the surface M to be cleaned, the rotating body 20 moves in the retreating direction of the suction port main body 11 due to a frictional force generated between the raised cloth 30 and the surface M to be cleaned. And easily pivots in the forward direction. When the other half-circumference portion b is in contact with the surface M to be cleaned, the raised cloth 31A of the raised cloth 31 comes into contact with the surface M to be cleaned with the tip of the raised cloth facing the front of the suction port main body. The frictional force between the cleaning surface 31 and the surface M to be cleaned is reduced, so that the running load when the suction port main body 11 retreats can be reduced. When the suction port main body 11 is retracted, the projections 36 on both end surfaces of the rotating body 20 are guided by the arc grooves 35, and the rotating body 20 stops rotating in the state shown in FIG. do not do.
[0023]
According to the present embodiment, the traveling load of the suction port main body 11 can be reduced, so that cleaning can be performed relatively easily.
[0024]
(Embodiment 2)
9 to 12 show the second embodiment. In the present embodiment, a completely cylindrical rotating body 40 is provided. As shown in FIG. 9, the rotating body 40 has a complete column shape, and support shafts 41 and 42 are provided on both end surfaces thereof. Further, on both end surfaces of the rotating body 40, there are provided projections 43 which can be fitted into the arc grooves 35 shown in FIGS.
[0025]
Raised cloths 44 and 45 divided into two are attached to the outer peripheral surface of the rotating body 40. FIG. 10 is a cross-sectional view taken along the line BB of FIG. 9. In this figure, the right side is the rear of the suction port main body having the rotating body 40, and the left side is the front of the suction port main body. The raised cloth 44 is provided on one half-circumference c along the circumferential direction of the rotating body 40, and the raised cloth 45 is provided on the other half circumferential part d along the circumferential direction of the rotating body 40. The raising cloth 44 has a raising 44A, and the raising 44A comes into contact with the surface to be cleaned M in a state where the tip of the raising is directed to the rear side of the suction port main body 11. The raising cloth 45 has a raising 45A, and the raising 45A comes into contact with the surface to be cleaned M in a state where the tip of the raising 45A is directed to the front side of the suction port main body 11 (see FIG. 12).
[0026]
Also in the configuration of the present embodiment, similarly to the first embodiment, the frictional resistance between the raised cloth 44 and the surface M to be cleaned when the suction port main body 11 advances, and the raised cloth when the suction port main body 11 retreats. The frictional resistance between the surface 45 and the surface M to be cleaned can be reduced, thereby reducing the running load of the suction port main body 11.
[0027]
【The invention's effect】
As described above, according to the present invention, it is possible to reduce the frictional resistance generated between the raised surface of the brushed cloth and the surface to be cleaned when the suction port main body advances and retreats, so that the traveling load of the suction port main body can be reduced. Can be reduced.
[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 rotating body.
FIG. 4 is a cross-sectional view taken along the line AA of FIG. 3, with a flat portion facing down.
FIG. 5 is a cross-sectional view of main parts when the suction port main body shown in FIG. 2 is advanced.
FIG. 6 is a cross-sectional view of a main part when the suction port main body shown in FIG. 2 is retracted.
FIG. 7 is a diagram illustrating a mechanism for restricting a rotation angle of a rotation body.
FIG. 8 is a view for explaining a mechanism for restricting a rotation angle of a rotating body.
FIG. 9 is a perspective view of a rotating body according to the second embodiment.
FIG. 10 is a sectional view taken along the line BB of FIG. 9;
11 is a cross-sectional view of a main part of the suction port main body having the rotating body of FIG. 9 when the suction port main body advances.
12 is a cross-sectional view of a main part when the suction port main body having the rotating body of FIG. 9 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 Rotating body 25 Flat surface 30, 31 Brushed cloth 30A, 31A Brushed 40 Rotating body 44, 45 Brushed cloth 44A, 45A Brushed

Claims (3)

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 rotating body that is rotationally driven by a frictional force generated between
On the outer peripheral surface of the rotating body, a raised cloth is provided that is divided into one half-peripheral part and the other half-peripheral part along the circumferential direction of the rotating body,
The raised cloth provided on the one-sided half-peripheral portion has a raised brush that comes into contact with the surface to be cleaned when the suction port main body moves forward, and that contacts the surface to be cleaned with the tip of the brush facing the rear of the suction port main body. ,
The raised cloth provided on the other half of the periphery has a raised surface that comes into contact with the surface to be cleaned when the suction port body is retracted, and that contacts the surface to be cleaned with the tip of the brush facing the front of the suction port body. A suction body. The suction port according to claim 1,
The rotating body is rotated in the forward direction corresponding to the forward direction when the suction port main body is advanced to form a gap between the suction 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 body is retracted, the suction port body is rotated in the forward direction corresponding to the retreating direction and closely adheres to the surface to be cleaned, and communicates with the external space in front of the suction port body and the suction opening. A suction port body characterized by shutting off. An electric vacuum cleaner comprising the suction port body according to claim 1.

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