JP2004283407A - Suction head of vacuum cleaner - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a suction head of a vacuum cleaner including a rotary brush having a good balance and reduced vibration. <P>SOLUTION: The suction head includes a lower case 2 having a suction port 3, the rotary brush 15 mounted with a plurality of cleaning bodies 19 in the longitudinal direction of the outer peripheral surface and rotatably supported in the lower case 3, an upper case for covering the upper part of the lower case 2, and a connection pipe 4 held between the lower case 2 and the upper case. In the rotary brush 15, two cylindrical rotary bodies 17a and 17b having substantially the same length are connected with each other, the two connected rotary bodies 17a and 17b are inserted with a support shaft along the axes of the rotary bodies, and both ends of the connected rotary bodies 17a and 17b and the support shaft are integrally attached with support rings 35a and 35b. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a suction device of a vacuum cleaner, and more particularly, to a rotary brush provided on the suction device.
[0002]
[Prior art]
The rotary brush provided at the suction port of the vacuum cleaner is usually provided with a plurality of flexible members attached in the longitudinal direction of the outer peripheral surface of a hollow cylindrical body having a length corresponding to the suction port of the suction tool, and provided at both ends. The rotating shaft is rotatably supported by a bearing provided on the suction tool (for example, see Patent Document 1).
[0003]
[Patent Document 1]
Japanese Patent Application Laid-Open No. 11-104407 (pages 4-5, FIGS. 1 and 2)
[0004]
[Problems to be solved by the invention]
The rotating brush described in Patent Literature 1 is configured such that the rotating shafts provided at both ends of one long hollow cylindrical body are supported by bearings, so that the balance is poor and vibration is likely to occur. In particular, for example, when a large load is applied to the front side of the rotary brush, the rotary brush is easily deformed, which causes a problem that the balance is further deteriorated and a larger vibration is generated.
In addition, the conventional rotating brush is generally provided with a plurality of flexible bodies (cleaning bodies) of the same material and the same length on the outer peripheral surface of the hollow cylindrical body, so that different cleaning surfaces such as carpets, flooring, and tatami mats are used. On the other hand, an effective suction force could not be obtained.
[0005]
SUMMARY OF THE INVENTION The present invention has been made to solve the above problems, and an object of the present invention is to provide a vacuum cleaner suction tool provided with a rotating brush having good balance and low vibration.
Another object of the present invention is to provide a suction device of a vacuum cleaner capable of efficiently sucking dust on a cleaning surface by providing a plurality of cleaning bodies corresponding to a cleaning surface on a rotating brush. It is.
[0006]
[Means for Solving the Problems]
The suction tool of the vacuum cleaner according to the present invention includes a lower case having a suction port, a rotating brush rotatably supported in the lower case with a plurality of cleaning bodies mounted in a longitudinal direction of an outer peripheral surface, and a lower brush. An upper case that covers an upper part of the case; and a connection pipe sandwiched between the lower case and the upper case. The rotating brush is connected to two cylindrical rotating bodies having substantially the same length. One support shaft extends through the center of the shafts of the two rotating bodies, and a supporting ring is attached to both ends of the combined rotating body and the supporting shaft to form an integral structure.
[0007]
BEST MODE FOR CARRYING OUT THE INVENTION
[Embodiment 1]
FIG. 1 is a bottom view of the suction tool of the vacuum cleaner according to Embodiment 1 of the present invention.
A suction tool 1 (hereinafter, sometimes referred to as a main body) is long in the left-right direction and has a lower case 2 having a suction port 3 in a longitudinal direction of a lower surface, an upper case covering an upper surface of the lower case 2, a lower case 2, and an upper case. It has a connection pipe 4 sandwiched between the case and a bumper 5 provided on a part of the front and side surfaces of the lower case 2 to protect the main body 1.
[0008]
On both sides on the front side of the lower case 2, a raised cloth 7 is mounted on a raised cloth mounting part 6 provided from below to the bottom of the bumper 5, and a predetermined space is provided between the raised cloth mounting parts 6. A plurality of front air passages 8 communicating with the suction port 3 are provided between the guide walls 9 provided at intervals. Reference numeral 10 denotes a mounting groove provided in the longitudinal direction on the rear side of the bottom surface of the lower case 2 for mounting a fixed cleaning body 11 made of a soft material flocking or the like. Reference numeral 15 denotes a rotating brush housed in the suction port 3 of the lower case 2 and having both ends rotatably supported by the lower case 2. Hereinafter, the rotating brush 15 will be described in detail.
[0009]
2 is an exploded perspective view of the rotating brush, FIG. 3 is a front view of FIG. 2, FIG. 4 is a sectional view of FIG. 3, and FIG. 5 is an enlarged view of a main part of FIG.
The rotating brush 15 according to the present embodiment connects a cylindrical hollow first rotating body 17a and a second rotating body 17b (hereinafter sometimes simply referred to as a rotating body 17) whose entire length is divided into two. The main body 16 includes a support shaft 30 penetrated by the main body 16 to support the main body 16, and support rings 35a and 35b coupled to both ends of the main body 16.
[0010]
The first and second rotating bodies 17a and 17b have a plurality of spiral grooves on the outer periphery thereof, each of which has a convex groove and is provided with a rotating cleaning body 19 such as a brush or a blade made of soft flocking or hard flocking. Cleaning member mounting portion 18 is provided. Both ends of the cleaning body mounting portion 18 are cut inward from ends of the first and second rotating bodies 17a and 17b, respectively, to form a fitting portion 18a.
[0011]
The coupling portion side of the first rotating body 17a is provided with a fitting projection 20 having an outer diameter substantially equal to the inner diameter of the rotating body 17 and protruding from the end face, and has a through hole 22 at the center at the center thereof. Further, a cylindrical fitting portion 21 provided with a plurality of slits 23 in the axial direction protrudes. Reference numeral 24 denotes a positioning locking portion protruding from the outer periphery of the fitting projection 20.
[0012]
On the coupling portion side of the second rotating body 17b, a fitting concave portion 25 is provided inside the end corresponding to the protruding length of the fitting convex portion 20 of the rotating body 17a, and a rotation portion is provided at the center thereof. A fitting hole 26 into which the fitting portion 21 of the body 17a fits is provided. The inner diameter of the fitting hole 26 on the entry side (end side) is substantially equal to the outer diameter of the fitting portion 21, and is gradually reduced toward the back, and the inner diameter on the exit side is the outer diameter of the fitting portion 21. It is slightly smaller. Reference numeral 27 denotes a positioning engaging portion that is locked by the positioning locking portion 24 of the rotating body 17a.
Numeral 28 denotes an exhaust port for the turbine provided between the cleaning body mounting portion 18 in the vicinity of the joint between the first and second rotating bodies 17a and 17b, but is not essential to the present invention.
[0013]
The support shaft 30 inserted through the first and second rotating bodies 17a and 17b is made of a metal rod, and its outer diameter is substantially equal to the inner diameter of the through hole 22 of the fitting portion 21 of the first rotating body 17a. The length is formed slightly longer than the length when the two rotating bodies 17a and 17b are combined. In addition, irregularities 31 (hereinafter, referred to as splines 31) such as spline processing and knurl processing are provided near both ends.
[0014]
The support rings 35a and 35b mounted on the end openings of the first and second rotating bodies 17a and 17b have the same structure. A cylindrical fixing portion 37 having a through hole 38 whose inner diameter is slightly smaller than the outer diameter of the support shaft 30 is provided at the center of one surface (the main body 16 side) of the flange portion 36 of the support rings 35a and 35b. A first fitting portion 39 having an outer diameter substantially equal to the inner diameter of the rotating body 16 is provided on the outer periphery thereof concentrically therewith, and the inner diameter is further concentrically provided on the outer periphery thereof. A second fitting portion 40 that is substantially equal to the outer diameter of the fitting portion 18a of the rotating body 16 and that is shorter than the first fitting portion 39 (short projection length) is provided, and the first and second fitting portions 40 are provided. An insertion portion 41 into which the fitting portions 18a at both ends of the cylindrical body 16 are inserted is formed between the fitting portions 39 and 40. Reference numeral 42 denotes a positioning piece projecting from the second fitting part 40 and inserted between the cleaning body mounting part 18 of the rotating body 16 and having a height substantially equal to the height of the first fitting part 39. Have been.
[0015]
Next, an example of an assembling procedure of the rotating brush according to the embodiment of the present invention will be described.
First, one end of the support shaft 30 is inserted into the through hole 38 of the fixing portion 37 of one of the support rings 35a, and the support shaft 30 (or the support ring 35a) is pressed to apply pressure until the end protrudes from the support ring 35a. Press. Thereby, the spline 31 of the support shaft 30 bites into the through hole 38 of the fixing portion 37 and is fixed firmly and non-rotatably.
[0016]
Next, the first rotating body 17a is inserted into the support shaft 30 through the opening, and the through hole 22 of the fitting portion 21 is inserted into the support shaft 30. Then, the fitting portion 18a from which the cleaning body mounting portion 18 on the periphery of the opening has been removed is inserted into the insertion portion 41 formed between the first and second fitting portions 39 and 40 of the support ring 35a. At this time, if a protrusion is provided on the outer circumferential surface of the first fitting portion 39 or the inner circumferential surface of the second fitting portion 40, the protrusion bites into the fitting portion 18a and is more strongly fixed. The positioning piece 42 of the support ring 35a is located between the cleaning body mounting portions 18 of the first rotating body 17a.
[0017]
Next, the fitting hole 26 of the second rotating body 17b is inserted into the support shaft 30, the fitting hole 26 is fitted to the fitting portion 21 of the first rotating body 17a, and the fitting recess 25 is fitted. The positioning engagement portion 27 is aligned with the positioning engagement portion 24. Then, when the second rotating body 17b is pressed, the two are integrally joined. At this time, since the diameter of the fitting hole 26 is reduced toward the back and is smaller than the outer diameter of the fitting portion 21, the fitting portion 21 is elastically deformed by the slit 23 provided therein, and the fitting hole 26 is deformed. The second rotating body 17b does not come off from the second rotating body 17a because the second rotating body 17b is in close contact with the inner wall of the second rotating body 17a.
[0018]
Further, since the first and second rotating bodies 17a and 17b are positioned by the positioning locking part 24 and the positioning engaging part 27, the cleaning body mounting parts provided on both the rotating bodies 17a and 17b respectively. 18 is also connected continuously at the joint. At this time, the other end of the support shaft 30 including the spline 31 protrudes from the opening of the second rotating body 17b.
[0019]
In this state, the two cleaning members are attached to the convex grooves of the continuous cleaning member mounting portion 18 of the first and second rotating members 17a and 17b from the end (opening side) of the second rotating member 17b. The cleaning body 19 having a length corresponding to the length of the portion 18 is inserted and attached.
Then, the through hole 38 of the fixing portion 37 of the other support ring 35b is fitted to the support shaft 30 protruding from the opening of the second rotating body 17a, and pressurized. As a result, the support ring 35b is press-fitted into the rotating shaft 30, and the spline 31 bites into the inner wall of the fixing portion 37, so that the supporting ring 35b is firmly fixed so as not to rotate. At this time, the fitting portion 18a of the second rotating body 17b is inserted into the insertion portion 41 formed between the first and second fitting portions 39 and 40 of the support ring 35b, and the positioning of the support ring 35b is performed. The piece 42 is located between the cleaning body mounting portions 18.
[0020]
As a result, the first and second rotating bodies 17a and 17b are integrally connected at the connecting portion, are firmly fixed by the support shaft 30 and the support rings 35a and 35b, and the cleaning body 19 is mounted on the outer periphery. The rotating brush 15 is configured.
The support rings 35a, 35b provided at both ends and the support shafts 30 protruding therefrom are inserted into the lower case 2 from the suction port 3 of the suction tool 1 and are provided on the inner surface of the side wall of the lower case 2 (not shown). ) Is rotatably supported.
[0021]
In the suction device 1 configured as described above, the connection pipe 4 is connected to a grip portion of a hose connected to a vacuum cleaner body (not shown) or an extension pipe connected to the grip portion, and the suction device 1 is held by the grip portion. The cleaning work is performed by moving it back, forth, left and right. At this time, a suction force acts on the suction device 1 by the operation of the vacuum cleaner main body, sucks dust on the cleaning surface from the suction port 3 and the front air passage 5, and collects the dust in the dust collection chamber of the vacuum cleaner main body. . Further, the rotating brush 15 is rotated by the suction force, and the cleaning surface is cleaned by the cleaning body 19 and the fixed cleaning body 11 attached thereto.
[0022]
In this embodiment, the main body 16 of the rotating brush 15 is divided into two parts from the center to form first and second rotating bodies 17a and 17b. And the support rings 35a and 35b are integrally connected to each other, so that the balance is good and the vibration during rotation is extremely small.
Also, even if a large load is applied to the rotating brush 15 during cleaning, the rotating brush 15 is not deformed, so that the balance is not deteriorated and the vibration is not increased.
Further, since the main body 16 is divided into two parts, the structure of the mold for molding the same is simplified, and the production is easy and the cost can be reduced.
[0023]
In the above description, the case where the present invention is applied to the illustrated suction tool is shown, but the present invention is not limited to this. For example, a suction tool of a type in which a rotating brush is rotated by a motor provided in a lower case, The present invention can be applied to suction tools of other types and structures.
[0024]
FIG. 8 is a schematic sectional view of a vacuum cleaner according to Embodiment 2 of the present invention. The same parts as those in the first embodiment are denoted by the same reference numerals.
Conventionally, a rotating brush of a suction tool of a vacuum cleaner is generally provided with a plurality of cleaning bodies of the same material and the same length. As described above, types of cleaning surfaces such as carpets, flooring, and tatami mats are used. In some cases, the desired rotational speed cannot be obtained due to different resistances, and there is a problem that an effective suction force cannot be obtained.
[0025]
In the present embodiment, all or some of the plurality of cleaning bodies mounted on the outer periphery of the rotating brush are made of different materials (such as types of hair) and different in length.
That is, as shown in FIG. 8, among the plurality of cleaning body mounting portions 18a to 18d (hereinafter, abbreviated as mounting portions), the mounting portion 18a is made of soft flocking and has a long length (in FIG. for length corresponding to r ₁ is Aru) fitted with a cleaning element 19a shown, the mounting portion 18b of the same material as the cleaning element 19a, and the cleaning member 19b of a length corresponding to the radius r ₂ is mounted I have. Further, the mounting portion 18c made of a hard bristle, the cleaning element 19c of a length corresponding to the radius r _2, the mounting portion 18d which was fitted with a cleaning element 19d of the same material, as long as the cleaning element 19c is there.
[0026]
In the present embodiment configured as described above, the cleaning body 19a is mainly responsible for cleaning the flooring 45, and the cleaning bodies 19b, 19c, and 19d are mainly responsible for cleaning the carpet 46.
Therefore, in cleaning, the resistance of the cleaning members 19a to 19d is small and does not affect the rotation of the rotating brush 15, so that dust on the cleaning surface can be efficiently absorbed.
[0027]
In the above description, the case where the cleaning members 19a to 19d having the above-described materials and lengths are attached to the mounting portions 18a to 18d of the rotating brush 15 has been described. However, the materials and lengths of the cleaning members are not limited thereto. They can be selected as appropriate. Further, all of them may be different or some of them may be different.
Further, in the above description, the case where the present invention is applied to the suction tool according to Embodiment 1 has been described. However, the present invention is not limited to this. For example, a rotating brush including one rotating body, The present invention can also be applied to a rotary brush of a suction tool of another method or structure, such as a suction tool of a method in which a rotary brush is rotated by a motor provided in the above-described method.
[0028]
【The invention's effect】
The suction tool of the vacuum cleaner according to the present invention connects two cylindrical rotating bodies having substantially the same length, and allows one support shaft to pass through the center of the axis of the two coupled rotating bodies. In addition, since a rotating ring which is integrally formed by attaching a support ring to both ends of the coupled rotating body and the supporting shaft is mounted, a rotating brush with good balance and less vibration can be obtained.
[Brief description of the drawings]
FIG. 1 is a bottom view of a suction tool of the vacuum cleaner according to Embodiment 1 of the present invention.
FIG. 2 is an exploded perspective view of the rotating brush of FIG.
FIG. 3 is a front view of FIG. 2;
FIG. 4 is a sectional view of FIG. 3;
FIG. 5 is an enlarged view of a main part of FIG. 4;
FIG. 6 is a front view showing a state where the rotary brush of FIG. 2 is assembled.
FIG. 7 is a sectional view of FIG. 6;
FIG. 8 is a schematic cross-sectional view of a rotary brush mounted on a suction tool of a vacuum cleaner according to Embodiment 2 of the present invention.
[Explanation of symbols]
Reference Signs List 1 suction tool, 2 lower case, 3 suction port, 15 rotating brush, 16 rotating body, 17a first rotating body, 17b second rotating body, 18 cleaning body mounting portion, 19 cleaning body, 20 fitting projection, Reference Signs List 21 fitting portion, 23 slit, 25 fitting concave portion, 26 fitting hole, 30 support shaft, 31 spline, 35a, 35b support ring, 37 fixing portion, 39 first fitting portion, 40 second fitting portion .

Claims (5)

A lower case having an inlet, a plurality of cleaning elements mounted in a longitudinal direction of an outer peripheral surface, a rotating brush rotatably supported in the lower case, an upper case covering an upper part of the lower case, and the lower case; And a connection pipe sandwiched between upper cases,
The rotating brush is formed by connecting two cylindrical rotating bodies having substantially the same length, and passing one support shaft through the center of the axes of the two rotating bodies connected to each other. A suction device for a vacuum cleaner, wherein a support ring is attached to both ends of a support shaft to form an integral unit. A spline is provided in the vicinity of both ends of the support shaft, and a cylindrical fixing portion is provided at the center portion. The fixing portion of the support ring attached to both ends of the two rotating bodies is pressed into the spline. The suction tool for a vacuum cleaner according to claim 1, wherein the suction tool is fixed. Of the two rotating bodies, a fitting projection having a cylindrical fitting portion is provided at the center at the end of one of the rotating bodies, and the fitting is provided at the center at the end of the other rotating body. The suction tool for a vacuum cleaner according to claim 1, further comprising a fitting recess having a fitting hole into which the portion fits, and a fitting recess fitting the fitting projection. A plurality of slits are provided in an axial direction of the fitting portion provided in the fitting convex portion, and an inner diameter of an end portion side of a fitting hole provided in the fitting recess is substantially equal to an outer diameter of the fitting portion. 4. The suction tool for a vacuum cleaner according to claim 3, wherein the diameter of the fitting part is reduced to be smaller than the outer diameter of the fitting part. A lower case having an inlet, a plurality of cleaning elements mounted in a longitudinal direction of an outer peripheral surface, a rotating brush rotatably supported in the lower case, an upper case covering an upper part of the lower case, and the lower case; And a connection pipe sandwiched between upper cases,
A suction tool for a vacuum cleaner, wherein all or a part of a plurality of cleaning bodies attached to the rotating brush are made of different materials and have different lengths.

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