JP2006314669A - Self-propelled vacuum cleaner - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a vacuum cleaner which consistently removes adhered items using a rotary brush. <P>SOLUTION: This vacuum cleaner has a rotary brush 2 on the right and left sections of the bottom along the direction in which the vacuum cleaner main body runs. Brush bristles 10 are attached on a rotary shaft 6 in a slanted angle radially. The rotary brush 2 does not have brush bristles 10 in the center of the rotary shaft. A supporting material 10 has a circular outer circumference S centering the rotary shaft. The outer circumference S has a chamfer 12 which is obtained by chamfering the corner. The brush bristles 10 is attached on this chamfer 12. Roughly vertical holes 13 for attaching the brush bristles 10 are bored on the chamfer 12, on which the brush bristles 10 is attached. The brush bristles 10 are planted in the holes. The planting holes 13 are bored on radially alternating positions as shown by signs 13a and 13b. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a vacuum cleaner provided with a rotary brush having a rotation axis substantially perpendicular to a cleaning surface in front of a moving direction for removal of deposits.

Conventionally, self-propelled vacuum cleaners have been commercialized. These have a driving source for moving the main body and a suction port for sucking up dust. In addition, there is a self-propelled cleaner that is provided with rotary brushes on the left and right in the direction of travel of the main body, scrapes left and right dust outside the suction port, and draws it into the suction port. On the other hand, a rotary brush or the like having a rotation axis substantially perpendicular to the cleaning surface is disclosed (see Patent Documents 1 and 2). Patent Document 3 discloses a brush in which brush hairs are attached to a side surface and a bottom surface of a base for cleaning tableware and the like.
Japanese Patent Application Laid-Open No. 11-71730 Japanese Patent Laid-Open No. 9-171983 JP-A-9-276204

  However, when the cleaning surface is uneven, for example, in the home, as in Patent Documents 1 and 2, when the brush hairs are perpendicular to the cleaning surface, the brush is easily separated from the cleaning surface. There was a problem. This is because the brush is easily separated from the cleaning surface and cannot cope with fluctuations in the distance between the brush and the cleaning surface. Therefore, there has been a problem that the object of removing the deposits has not been sufficiently fulfilled. In addition, when the self-propelled cleaner has two rotating brushes on the left and right bottom surfaces with respect to the direction of travel of the apparatus, only one of the rotating brushes may be in contact with each other. Unlike the right and left rotating brushes, there is a problem that the running direction is blurred.

  In addition, the brush hair as in Patent Document 3 has a different use from a vacuum cleaner in the first place. Moreover, even if this is applied to a vacuum cleaner, when brush hairs are pressed in the axial direction, as long as there are brush hairs that contact vertically, problems similar to those in Patent Documents 1 and 2 occur, and cleaning is performed. There is no effect of hitting the dust on the surface and hitting the dust, and there is no effect of pulling it into the suction port.

  Therefore, the present invention provides a self-propelled cleaner that provides rotary brushes on the left and right bottom surfaces with respect to the advancing direction of the main body and draws left and right dust outside the suction port into the suction port. Provided is a cleaner in which the traveling direction is stable when there is unevenness and the deposits are reliably removed.

In the present invention, means for solving the above-described problems are configured as follows.

(1) a drive source for moving the main body;
In a self-propelled cleaner provided with brush bristles, and a rotating brush rotatably supported at the positions of the left and right bottom surfaces with respect to the traveling direction of the main body,
The rotating brush is a self-propelled cleaner in which the bristles are attached in an oblique direction in which the bristles of the bristles spread radially from the rotation center to the cleaning surface.

  If comprised in this way, when force will be given to the axial direction of a rotating brush, the effect | action which a force will act on the bristle diagonally will be produced. Therefore, unlike the case where the cleaning surface comes into contact with the bristles perpendicularly by this action, the cleaning surface can be easily bent evenly outward, so even if the cleaning surface is uneven, the cleaning surface is always maintained. The brush can touch. Therefore, even if the cleaning surface is uneven, it is always possible to draw dust into the suction port. Further, since both brushes are always in contact with the cleaning surface, the brush is not in contact with only one of the cleaning surfaces, and the difference in frictional force between the left and right brushes is small.

  The “oblique direction in which the bristles of the bristles radially spread from the center of rotation to the cleaning surface” only needs to be able to bend and bend the bristles easily and uniformly outward. If the hair is facing, it may be attached obliquely in the radial direction. Further, this direction simply represents a radially expanding direction, and “from the rotation center” does not represent that the bristles are attached to the rotation center.

  (2) The rotating brush is attached to a chamfered portion to which the brush bristles are attached to an attachment member having a shape having a chamfered portion whose side surfaces are obliquely chamfered.

  If comprised in this way, since the said outer peripheral side surface of the said support material has the chamfered part chamfered diagonally, and the said bristle is attached to this chamfered part, attachment of a bristle can be formed easily. .

  (3) In the rotating brush, an attachment hole for attaching the brush bristles of the attachment member is formed substantially perpendicular to the chamfered portion.

  As a method for attaching the brush hair, it is conceivable to provide a mounting hole and attach the brush hair to the back thereof. In the present invention, the mounting hole is formed substantially perpendicular to the mounting surface. If comprised in this way, the thickness which the bristle is covering in the periphery of the hole hole for attachment, ie, the distance of the bottom of a hole for attachment, and a mouth, can be made uniform in the mouth outer periphery. Therefore, it is possible to attach the brush hair more reliably.

  According to the present invention, unlike the cleaning surface that comes into contact with the bristles perpendicularly, the cleaning surface can be bent easily and uniformly, so even if the cleaning surface is uneven, the cleaning surface is always The brush can touch. Therefore, even if the cleaning surface is uneven, it is always possible to draw dust into the suction port. Further, since both brushes are always in contact with the cleaning surface, the brush is not in contact with only one of the cleaning surfaces, and the difference in frictional force between the left and right brushes is small.

  First, an external configuration diagram of the self-propelled cleaner according to the present embodiment is shown in FIG. 1 to describe the configuration of the self-propelled cleaner (hereinafter simply referred to as “vacuum cleaner”). FIG. 1A is a plan view of the vacuum cleaner 1 as viewed from above. FIG. 1B is a view as viewed from the front in the moving direction (hereinafter referred to as “the front of the cleaner”). The cleaner 1 on the cleaning surface 7 is a driven tire 4 and a drive tire 5 (described later, FIG. 1 (C). Then, the two left and right brushes 2 are respectively fixed to a rotatable rotating shaft 6. FIG. 1C is a bottom view. A driving tire 5 that drives a vacuum cleaner and supports its own weight, a driven tire 4 that is rotatably supported and supports its own weight, a rotating brush 2, and a suction port 3 that sucks out dust that has been knocked out by the rotating brush 2 are provided. ing. The suction port 3 has a roller 8, and the cleaning surface 7 is polished by rotating the roller 8 to wipe the cleaning surface 7.

  In FIG. 2, the internal structure of the rotation part of the cleaner which concerns on this embodiment is shown, and this is demonstrated. The suction fan 9 for sucking up dust is rotated by a suction motor 102, the roller 8 is rotated by a roller rotation motor 103, the drive tire 5 is rotated by a moving motor 104, and the rotary brush 2 is rotated by a rotary brush motor 105. Power is given. These motors 102 to 105 are controlled by the control unit 101.

  The moving motor 104 corresponds to the “drive source for moving the main body” of the present invention.

  Next, the operation of the cleaner 1 will be described. The vacuum cleaner 1 is supported by the drive tire 5 and the driven tire 4 as described above, and rotates forward and backward by rotating the drive tire 5 with power from the moving motor 104. A suction fan 9 for sucking dust from the suction port 3 is provided. During advance, the suction motor 102 is driven to suck dust by a known means. At the same time, the roller 8 attached to the suction port 3 is rotated by the power of the roller rotation motor 103 and the cleaning surface 7 is wiped off to polish the cleaning surface. Further, the rotating brush 2 has the left and right rotating directions opposite to each other. From the front outer side of the cleaner 1 to the center rear of the cleaner 1 (see arrows in FIGS. 1A and 1C), the rotating brush is used. 2 is rotated so that dust outside the suction port 3 is swept into the suction port 3. Therefore, the rotary brush 2 has a function to compensate for the limitation of securing the width of the suction port with respect to the main body due to the configuration of the main body of the vacuum cleaner 1.

  In the rotary brush 2, the rotary shaft 6 is moved from the rotary shaft 6 to the brush bristles 10 (see FIG. 3) so that the pressure of the brush bristles 10 on the front side of the cleaner is larger than the pressure on the front side of the cleaner. On the other hand, it is inclined slightly forward (not shown). Thereby, the dust near the brush in front of the cleaner is less likely to release the dust again from the rear of the brush to the outside of the cleaner 1, so that the dust can be effectively drawn into the suction port 3.

  FIG. 3 shows the brush of the vacuum cleaner according to this embodiment. FIG. 3A shows a cross-sectional view of the brush. The support material 11 of the rotary brush 2 has a cylindrical shape centered on the rotation center line 20 and is integrally formed with the rotary shaft 6. The bristles 10 are attached to the support material 11. As shown in the cross-sectional view of the brush in FIG. 3A, the support member 10 has a circular outer peripheral portion S centering on the rotating shaft 6, and the outer peripheral portion S is chamfered obliquely. The bristle 10 is attached to the chamfered portion 12. Therefore, the rotary shaft 6 is attached in an oblique direction in which the bristles of the brush hairs radially extend from the center to the cleaning surface.

  If comprised in this way, when force will be given to the axial direction of the rotating brush 2, the effect | action which a force will act on the bristle 2 from diagonally will be produced. Therefore, by this action, unlike the cleaning surface 7 coming into contact with the bristles 2 perpendicularly, the cleaning surface 7 can be easily bent and bent evenly. There is an effect that the brush is always in contact with the cleaning surface 7. In addition, since both brushes are always in contact with the cleaning surface 7, the brush is not in contact with only one side, and the difference in frictional force between the left and right brushes is small.

  In view of such actions and effects, the shape of the outer peripheral portion S is a disk in FIG. 3, but the polygonal shape, the ellipse, or the outer peripheral portion may be uneven. Further, the brush bristles 10 may be attached so that the hair tips are inclined obliquely in the radial direction. Further, the surface 14 on the support member 11 facing the cleaning surface 7 is not necessarily flat and may have a slight boss or a hemispherical surface. Furthermore, even if it does not necessarily have the chamfered chamfered portion 12, the brush hair 10 may be attached so that the hair tip faces in the oblique direction of the outer periphery of the radius, and the brush hair 10 is attached by being bent from the root. Also good.

  Further, the support material 11 may be fixed to the rotating shaft 6.

  Furthermore, the direction of the bristles 10 of this embodiment shown in FIG. 3 corresponds to the “oblique direction in which the bristles of the bristles spread radially from the center of rotation to the cleaning surface” of the present invention.

  FIG. 3B is a component diagram of the support member 11 and is a view seen from a position that becomes the bottom surface of the cleaner 1 after assembly. The attachment holes 13 of the brush bristles 10 are alternately opened in the radial direction as indicated by reference numerals 13a and 13b. The mounting holes 13 need a certain distance to maintain strength. Thus, when the mounting holes 13 are alternately formed in the radial direction, the bristles 10 are attached to the chamfered portion 12 in close contact with each other. Is possible.

  FIG. 3C shows an enlarged view of the outer peripheral portion S. The mounting hole 13 is formed with a hole substantially perpendicular to the base surface of the chamfered portion 12 of the support material 11 to which the brush hairs 10 are attached, and a plurality of brush hairs 10 are attached to the holes. Yes. In this way, since the bristle 10 and the mounting hole 13 are formed substantially perpendicular to the chamfered portion, the wall thickness of the brush bristle 10 covering the mouth of the mounting hole 13, that is, The distance between the bottom of the mounting hole 13 and the mouth can be made uniform on the outer periphery of the mouth.

  The outer peripheral portion S corresponds to the “side surface” of the present invention.

  In FIG. 3, there are only two types of mounting holes 13 on the outer peripheral side and the inner peripheral side, but three or more stages may be provided, and the brush bristles 10 may be provided in three or more stages in the radial direction. Even in this case, since there is no brush bristles 10 parallel to the axis at the center of the rotating shaft 6, the bristles 10 can be easily bent uniformly and bent outward. The effect that the brush touches the ”.

  Further, the length of the brush hair (outer peripheral side) 10a and the length of the brush hair (inner peripheral side) 10b are substantially the same in FIG. 3, but the effect of sweeping the cleaning surface 7 and drawing dust into the suction port, and In order to more effectively exhibit the “effect that the brush is always in contact with the cleaning surface 7”, the tip of the bristles (outer peripheral side) 10 a and the bristles (inner peripheral side) 10 b of the cleaning surface 7 are both It is conceivable to make it long enough to reach it. In this way, since the plurality of brush bristles 10 are in contact with the cleaning surface 7 at the same time, dust near the brush can be more effectively drawn into the suction port 3 (see FIG. 1).

  Furthermore, as shown in FIG. 3C, the angle between the inclined surface of the chamfered portion 12 and the rotation center line can be 45 degrees, for example, but may be a smaller angle, for example, 22 degrees. If this angle is reduced, the radius of the hair tip can be increased.

It is a figure which shows the external appearance block diagram of the self-propelled cleaner concerning this embodiment. It is a figure which shows the internal structure of the rotation part of the cleaner which concerns on this embodiment. The brush of the vacuum cleaner which concerns on this embodiment is shown.

Explanation of symbols

1-Vacuum cleaner 2-Rotating brush 3-Suction port 4-Drive tire 5-Drive tire 6-Rotating shaft 7-Cleaning surface 8-Roller 9-Suction fan 10-Brush bristles 10a-Brush bristles (outside)
10b-Brush hair (inner circumference side)
11-Support material 12-Chamfered portion 13-Mounting hole 13a-Mounting hole (outside)
13b-Mounting hole (inner circumference side)
14-surface 20-rotation center line 101-control unit 102-suction motor 103-roller rotation motor 104-movement motor 105-rotary brush motor S-outer peripheral portion

Claims (4)

A drive source for moving the main body;
In a self-propelled cleaner provided with brush bristles, and a rotating brush rotatably supported at the positions of the left and right bottom surfaces with respect to the traveling direction of the main body,
The support material has a chamfered portion whose side surface is chamfered obliquely,
The rotating brush is a self-propelled cleaning device in which the bristles of the brush hairs are attached to the chamfered portion toward the cleaning surface with respect to the mounting member having a chamfered portion whose side surface is obliquely chamfered. Machine. A drive source for moving the main body;
In a self-propelled cleaner provided with brush bristles, and a rotating brush rotatably supported at the positions of the left and right bottom surfaces with respect to the traveling direction of the main body,
The rotary brush is a self-propelled cleaner in which the bristles are attached in an oblique direction in which the bristles of the bristles spread radially from the center of rotation to the cleaning surface.   The self-propelled cleaner according to claim 2, wherein the rotating brush has the brush bristles attached to an attachment member having a chamfered portion whose side surfaces are obliquely chamfered.   The self-propelled cleaner according to claim 3, wherein the rotating brush has an attachment hole for attaching the brush bristles of the attachment member substantially perpendicular to the chamfered portion.

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