JP6247521B2 - Electric vacuum cleaner - Google Patents

Description

  Embodiments of the present invention relate to a vacuum cleaner including a swivel cleaning unit provided in a main body case.

  Conventionally, a so-called autonomous traveling type vacuum cleaner (cleaning robot) that cleans the floor surface while autonomously traveling on the floor surface as a surface to be cleaned while detecting an obstacle using a sensor or the like is known. ing. In such a vacuum cleaner, a suction port communicating with the dust collection unit is formed in a lower portion of the main body case of the vacuum cleaner body having a dust collection unit and the like, and a vacuum cleaner body is formed on a side portion of the suction port. The drive wheel which makes it run autonomously is attached. Therefore, the suction port cannot be spread on both sides corresponding to these drive wheels. Therefore, in order to clean the wall where the suction port does not reach, etc., as a swivel cleaning part that scrapes dust to the suction port by swirling on the floor surface on both sides of the lower part of the main body case and in front of the drive wheel It is necessary to provide a side brush.

  These side brushes have a swivel portion that is a main body rotated by a side brush motor, and brush hairs that project downward from the swivel portion along the radial direction. Therefore, the bristle extends in an inclined manner with respect to the floor surface. For this reason, for example, the tip of the brush hair is difficult to enter into a groove or the like provided on the floor surface, so that the brush hair does not sufficiently hit the floor surface, and dust on the floor surface may not be effectively removed.

Japanese Patent No. 3724637

  The problem to be solved by the present invention is to provide a vacuum cleaner that can effectively remove dust on the surface to be cleaned by the brush bristles of the swivel cleaning unit.

The vacuum cleaner of the embodiment has a main body case. The vacuum cleaner also has drive wheels that allow the main body case to travel on the surface to be cleaned. Furthermore, this vacuum cleaner has a swivel cleaning part provided in the main body case. The swivel cleaning unit includes a swivel unit that has a rotation axis along a direction substantially perpendicular to the surface to be cleaned and is rotatably provided substantially parallel to the surface to be cleaned. In addition, the swivel cleaning unit includes an arm portion that has elasticity at least on the tip side and protrudes from the swivel unit. Further, the swivel cleaning unit includes a plurality of brush bristles that are inclined in a direction opposite to the rotation direction of the swivel unit, protrude from the arm portion toward the surface to be cleaned, and scrape off dust on the surface to be cleaned.

A part of rotation cleaning part of the vacuum cleaner of 1st Embodiment is shown, (a) is the perspective view, (b) is a side view. It is a top view which shows a vacuum cleaner same as the above from the downward direction. It is a side view of a vacuum cleaner same as the above. It is a perspective view of a vacuum cleaner same as the above. It is a block diagram which shows the internal structure of a vacuum cleaner same as the above. (a) is a side view schematically showing the cleaning state of the brush hair cleaning surface of the swirl cleaning unit, and (b) schematically shows the cleaning state of the brush hair cleaning surface of the swirl cleaning unit. It is a side view. A part of rotation cleaning part of the vacuum cleaner of 2nd Embodiment is shown, (a) is the perspective view, (b) is a front view. A part of rotation cleaning part of the vacuum cleaner of 3rd Embodiment is shown, (a) is the perspective view, (b) is a front view.

  The configuration of the first embodiment will be described below with reference to FIGS.

  In FIG. 1 thru | or 6, 11 shows a vacuum cleaner, and this vacuum cleaner 11 is autonomous running (self-propelled) on the floor surface F as a surface to be cleaned as this vacuum cleaner 11 in this embodiment. A description will be given below by taking as an example a so-called self-propelled robot cleaner that cleans the floor surface F.

  The vacuum cleaner 11 includes a hollow main body case 12, an electric blower 13 accommodated in the main body case 12, a dust collecting portion 14 communicating with the suction side of the electric blower 13, for example, a plurality ( A pair of drive wheels 15 as drive units, a motor 16 as drive means for driving these drive wheels 15, a turning wheel 17 for turning, and a lower part of the main body case 12 substantially parallel to the floor surface F For example, a side brush 18 as a pair of swivel cleaning parts attached so as to be rotatable (turnable), a side brush motor (swivel motor) 19 as a turn driving means for driving each of the side brushes 18, and a plurality of distance detection means A distance measuring sensor 20, a control means 22 constituted by a circuit board and the like, and a secondary battery 23 which is a battery constituting a power supply unit. Hereinafter, the direction along the traveling direction of the vacuum cleaner 11 (main body case 12) is the front-rear direction (arrow FR, RR direction shown in FIG. 2 and the like), and the left-right direction intersecting (orthogonal) with the front-rear direction. (Both sides direction) is described as the width direction.

  The main body case 12 is formed in a flat columnar shape (disk shape), for example, with synthetic resin, etc., for example, a flat bottomed cylindrical lower case 12a and a flat fitting that fits over the lower case 12a The upper case 12b has a cylindrical shape with a lid, and has a circular shape in plan view. A suction port 24 as a dust collection port communicating with the dust collection unit 14 is formed in the lower case 12a so as to face the floor surface F. Although not shown, various operation panels, a display unit, and the like are arranged on the upper part of the upper case 12b. The main body case 12, the electric blower 13 housed in the main body case 12, the motors 16, the side brush motors 19, the distance measuring sensor 20, the control means 22, the secondary battery 23, and the dust collecting part 14 A vacuum cleaner main body 26 that travels on the floor surface F by the drive wheels 15 is constituted by the side brush 18 and the like. Therefore, the cleaner body 26 is also circular in plan view (viewed from above or below).

  The suction port 24 is formed in a longitudinal shape in the left-right direction, that is, in a horizontally long shape, and is opened at a position behind the center portion of the lower case 12a of the main body case 12 and in the center portion in the left-right direction. In addition, a rotary brush 28 as a rotary cleaning body is rotatably disposed in the suction port 24.

  The rotary brush 28 is configured, for example, by attaching a plurality of cleaning body portions protruding in a wall shape spirally in the radial direction on the outer peripheral surface of a long shaft portion. The rotating brush 28 has a lower side protruding from the suction port 24 to the lower side of the lower case 12a of the main body case 12, and a cleaning body portion positioned on the lower side with the vacuum cleaner 11 placed on the floor F It is comprised so that the front-end | tip may contact the floor surface F. FIG. The rotary brush 28 is rotationally driven by a brush motor 29 as a rotary cleaning body driving means.

  The brush motor 29 is accommodated in the main body case 12 (the vacuum cleaner main body 26), and is connected to the rotating brush 28 via a gear mechanism (not shown) as a mechanism portion.

  The dust collecting unit 14 collects dust sucked from the suction port 24 by driving the electric blower 13. For example, the dust collecting unit 14 filters and collects dust with a dust collection bag such as a paper pack or a filter, or centrifugal separation. Any configuration can be used, such as a configuration in which dust is separated and collected by inertial separation such as (cyclonic separation) or linear separation. Further, the dust collecting portion 14 is located, for example, at the rear portion of the main body case 12 and is detachable from the main body case 12.

  Each drive wheel 15 travels the autonomous vacuum cleaner 11 (the vacuum cleaner body 26) on the floor surface F (autonomous traveling), that is, for traveling, and has a rotating shaft (not shown) along the left-right width direction. It is formed in a shape. In addition, these drive wheels 15 are disposed in the width direction on both sides of the suction port 24 at positions near the center in the front-rear direction of the lower part of the main body case 12 (the vacuum cleaner body 26). The position is symmetrical to the direction. The drive wheels 15 are attached to the main body case 12 so as to be movable in the vertical direction. The drive wheels 15 are urged toward the floor surface F by urging means (suspension) (not shown). The grip power against is secured.

  Each motor 16 is disposed, for example, corresponding to each drive wheel 15, and can drive each drive wheel 15 independently. These motors 16 may be directly connected to the respective drive wheels 15, or may be connected to the respective drive wheels 15 via transmission means (not shown) such as gears or belts.

  The swivel wheel 17 is a driven wheel that is located at the front and substantially at the center in the width direction of the main body case 12 and that can swivel along the floor surface F.

  Each side brush 18 includes a swivel portion (main body portion) 31, and a first brush portion 32 and a second brush portion 33 that project radially from the swivel portion 31 in the radial direction (FIG. 1 to FIG. 1). (Fig. 4). The side brushes 18 and 18 are arranged so that the turning parts 31 and 31 serving as the center of rotation are located in the lower case 12a of the main body case 12 at positions in front of the suction port 24 and the drive wheels 15 and 15 and on both sides behind the turning wheel 17. Is attached to face the floor F.

  The swivel portion 31 is formed in a substantially cylindrical shape, is rotatably supported by the main body case 12 so as to have an axial direction along the vertical direction, and can rotate substantially parallel to the floor surface F. Yes. Further, the lower end portion of the turning portion 31 is located above the lower surface of the lower case 12a of the main body case 12, and does not protrude downward from the lower case 12a. Further, an attachment portion 31a that is inclined with respect to the axial direction of the turning portion 31 is formed in an annular shape that is continuous over the entire circumference at the outer peripheral edge portion of the lower end portion of the turning portion 31. The attachment portion 31 a is an inclined surface that is a chamfered outer peripheral edge portion of the lower end portion of the turning portion 31, and is inclined toward the outside of the turning portion 31.

  A plurality of, for example, four, first brush parts 32 are provided around the swivel part 31 along the radial direction of the swivel part 31, and are spaced apart from each other at substantially equal intervals (substantially equal angles) in the circumferential direction of the swivel part 31. Has been placed. Each of the first brush portions 32 includes an arm portion 35 projecting radially from the swivel portion 31 along the radial direction, and a plurality of brush hairs 36 planted on the arm portion 35. And these 1st brush parts 32 are arrange | positioned so that a front end side can protrude outward from the outer peripheral part (both side parts) of the main body case 12. FIG.

  The arm portion 35 is integrally formed in a long shape by a member such as a synthetic resin having elasticity, for example, an arm base portion 41 integrally attached to the attachment portion 31a of the turning portion 31, and the arm portion base portion 41. And a bristle mounting portion 42 that is continuous with the tip (FIG. 1 (a) and FIG. 1 (b)). The arm portion base 41 is inclined so as to gradually approach the floor surface F from the attachment portion 31a of the turning portion 31 toward the floor surface F toward the brush bristle attachment portion 42 on the distal end side. Further, the brush bristle attachment portion 42 extends so as to be substantially parallel to the floor surface F. Furthermore, the lower part of this bristle attachment part 42 becomes the opposing surface 42a which the bristle 36 is planted and opposes substantially parallel with respect to the floor surface F. FIG. The brush bristle mounting portion 42 is a pressing portion that elastically presses the bristle 36 downward with respect to the floor surface F in a vertical direction. The elasticity of the arm portion 35 is set so that the brush bristles 36 are pressed against the floor surface F with an appropriate strength.

  The bristle 36 is formed in a linear shape by a member such as a synthetic resin having elasticity (flexibility), for example, and faces the floor surface F on the opposing surface 42a of each bristle mounting portion 42 of the arm portion 35. The hair is implanted so as to protrude downward. The brush bristles 36 are arranged such that the vertical component of the inclination is larger than the horizontal component. That is, the first brush portion 32 is a so-called vertical brush portion having the brush hairs 36 along the vertical direction. The brush bristles 36 are inclined with respect to the arm portion 35 in the direction opposite to the rotation direction (turning direction) R of the turning portion 31 (side brush 18), that is, toward the rear side of the rotation direction R. (FIG. 1 (b)). That is, the brush bristles 36 are arranged in an inclined manner toward the width direction (left side in FIG. 1B) intersecting (orthogonal) with the longitudinal direction of the arm portion 35 with respect to the surface direction of the facing surface 42a. . Furthermore, the brush bristles 36 have an arm portion 35 (opposing surface 42a) more than the distance D between the arm portion 35 (opposing surface 42a) and the floor surface F in a state where the vacuum cleaner 11 is placed on the floor surface F. ) From below (just below) is set to be large. In other words, the lengths of the bristle 36 are set so that the tip side maintains contact with the floor surface F even when the drive wheel 15 is projected to the maximum with respect to the main body case 12. These brush bristles 36 are elastically deformed by contacting the floor surface F at the front end side, and rotate integrally with the swivel portion 31 by the swiveling portion 31 rotation (turning) to scrape dust on the floor surface F. It is supposed to take.

  The bristle 36 that is inclined with respect to the arm part 35 is inserted into a mold so that the bristle 36 is inclined, for example, an intermediate body in which the bristle 36 is vertically implanted with respect to a base part (not shown), It can be easily manufactured by integrally molding the arm portion 35 with the base portion.

  On the other hand, a plurality of, for example, four second brush parts 33 are provided around the turning part 31 along the radial direction of the turning part 31, and are substantially equidistant (substantially equiangular) from each other in the circumferential direction of the turning part 31. Are spaced apart from each other. These second brush portions 33 are located between the first brush portions 32 and 32 adjacent to each other. That is, the first brush part 32 is located between the second brush parts 33 and 33 adjacent to each other, and the first brush part 32 and the second brush part 33 are alternately arranged in the circumferential direction of the turning part 31. Has been placed. Therefore, the same number of the first brush portions 32 and the second brush portions 33 are provided in the turning portion 31 in this embodiment. Each second brush portion 33 includes a projecting arm portion 45 projecting from the swivel portion 31 along the radial direction, and a plurality of brush hair portions 46 planted at the tip of the projecting arm portion 45. Yes.

  The projecting arm portion 45 is formed in a long shape by a member such as a synthetic resin, for example, and a base end portion is attached to the attachment portion 31a of the turning portion 31 and extends from the turning portion 31 toward the floor surface F along the radial direction. Protruding so as to incline. These protruding arm portions 45 are not essential components, and the brush bristle portion 46 may be directly planted on the attachment portion 31a of the turning portion 31 or the like.

  The brush bristle portion 46 is formed in a linear shape by a member such as a synthetic resin having elasticity (flexibility), for example, and extends from the respective distal end portions of the projecting arm portions 45 along the projecting arm portions 45 to the floor surface. They are arranged in a bundle so as to project downward in an inclined manner toward F. That is, the second brush portion 33 has the brush bristle portion 46 such that the horizontal component of the slope is greater than the vertical component (the tilt angle of the brush bristle portion 46 with respect to the floor surface F is 45 ° or more). In other words, it is a horizontal brush part. These brush bristle portions 46 are elastically deformed when the tip side comes into contact with the floor surface F, and rotate integrally with the revolving portion 31 by the rotation (revolution) of the revolving portion 31 to remove dust on the floor surface F. It comes to scrape. The brush bristle portions 46 may be formed of the same material as the brush bristle 36, or may be formed of a material different from the brush bristle 36.

  Each side brush motor 19 has a rotating shaft (not shown) that projects downward and is connected to each swivel unit 31, and each side brush 18 is moved to the center side in the width direction of the main body case 12, in other words, the right side brush. The left side brush 18 can be rotated to the left side, and the left side brush 18 can be rotated to the right side, that is, each side brush 18 can collect dust to the suction port 24 side.

  The distance measuring sensor 20 is a non-contact sensor such as an ultrasonic sensor, an infrared sensor, or an image sensor, for example, and is disposed over the front or both sides of the outer periphery of the main body case 12, for example. The presence / absence of obstacles (walls) and side obstacles (walls) and the distance between them and the main body case 12 can be detected.

  The control means 22 includes, for example, a timekeeping means such as a timer, a storage means such as a memory, and a control unit such as a microcomputer. The electric blower 13, each motor 16, each side brush motor 19, a distance measuring sensor 20, and a brush Based on the detection result by the distance measuring sensor 20, the drive of the electric blower 13, each motor 16, and the like can be controlled electrically connected to the motor 29 and the like.

  The secondary battery 23 supplies power to the control means 22, the electric blower 13, each motor 16, each side brush motor 19, the distance measuring sensor 20, the brush motor 29, and the like. The secondary battery 23 is electrically connected to the charging terminal 48 located on the lower surface of the lower case 12a of the main body case 12 on both sides of the swivel wheel 17, and is installed at a predetermined position in a room (room), for example. Charging is possible by connecting a charging terminal 48 to a predetermined charging stand (not shown).

  Next, the operation of the first embodiment will be described.

  In a state where the vacuum cleaner 11 is placed on the floor surface F, the bristle 36 of each first brush portion 32 of each side brush 18 is pressed from above by the arm portion 35, and the tip side of the brush surface 36 is against the floor surface F. The brush bristles 36 are bent and come into contact with each other in a tilted direction (FIG. 6 (a)). Further, the brush bristle portions 46 of the second brush portions 33 of the side brushes 18 are in contact with each other in an inclined manner with the tip side thereof being bent along the floor surface F (FIG. 6B).

  Then, for example, when the predetermined time preset in the control means 22 is reached, the electric vacuum cleaner 11 drives the electric blower 13 and starts cleaning from the charging stand, for example. The cleaning start position can be set at an arbitrary place such as the travel start position of the electric vacuum cleaner 11 or the entrance / exit of the room.

  In this electric vacuum cleaner 11, the control means 22 rotates the motors 16, 16 and autonomously travels on the floor surface F by the drive wheels 15, 15. At this time, the control means 22 detects the distance and the running state of the vacuum cleaner 11 by detecting the distance from the wall surrounding the cleaning area or an obstacle in the cleaning area, for example, via the distance measuring sensor 20. In response to the detection from the distance measuring sensor 20, the vehicle travels on the floor F while avoiding obstacles.

  The vacuum cleaner 11 sucks the dust on the floor surface F together with the air through the suction port 24 through which the negative pressure generated by driving the electric blower 13 acts via the dust collecting portion 14. At this time, the control means 22 rotates each side brush 18 via each side brush motor 19 or drives the rotating brush 28 via the brush motor 29 as necessary.

  Here, in each side brush 18, the bristles 36 of each first brush portion 32 and the bristles 46 of each second brush portion 33 are in contact with the floor surface F at different angles. Since the brush bristles 36 have a relatively small inclination with respect to the floor surface F and are substantially along the vertical direction (vertical direction), for example, the tip side is effective in the groove G of the floor surface F (for example, a floor joint). It is possible to effectively penetrate the dust in the groove G (FIG. 6 (a)). Further, since the brush bristle portion 46 has a relatively large inclination with respect to the floor surface F, it easily reaches the floor surface F in the vicinity of the obstacle W and the dust on the floor surface F in the vicinity of the obstacle W is effective. Thus, it can be scraped up to the suction port 24 (FIG. 6 (b)).

  Then, the dust sucked together with the air from the suction port 24 is separated and collected by the dust collecting unit 14, and the air from which the dust is separated is sucked into the electric blower 13 and cooled after the electric blower 13 is cooled. The exhaust air is exhausted from an exhaust port (not shown) provided in the main body case 12 to the outside.

  When it is determined that the cleaning of the cleaning area has been completed, the control means 22 causes the electric vacuum cleaner 11 to autonomously travel to the position of the charging stand, stops the electric blower 13 and the like, and sets the charging terminal 48 to the charging stand ( The motors 16 and 16 are stopped by connecting them (physically and electrically), the operation is terminated, and the secondary battery 23 is charged.

  As described above, according to the first embodiment, the plurality of brush bristles 36 projecting toward the floor F from the arm portion 35 having elasticity projecting radially from the swivel unit 31 of the side brush 18 are swirled. By inclining the portion 31 in the direction opposite to the rotation direction R, the dust on the floor surface F can be effectively removed by the bristles 36 of the side brush 18.

  Next, a second embodiment will be described with reference to FIG. In addition, about the structure and effect | action similar to the said 1st Embodiment, the same code | symbol is attached | subjected and the description is abbreviate | omitted.

  In the second embodiment, in the first embodiment, the entire brush bristles 36 are further inclined with respect to the arm portion 35 along the radial direction of the swivel portion 31 (side brush 18), and the tip of the arm portion 35 is The tip side of the bristle 36 located in the vicinity of the tip part 42b of the brush bristle attachment part 42 is the tip side of the arm part 35, that is, the side brush 18 (the swivel part). 31) protrudes in the radial direction.

  That is, the brush bristles 36 are inclined with respect to the arm portion 35 in the distal direction and downward toward the floor surface F, and in the direction opposite to the rotation direction R of the turning portion 31.

  And according to the said 2nd Embodiment, since the front end side of one of the bristle 36 protrudes in the front end side of this arm part 35 rather than the front end part of the arm part 35, the vicinity of obstructions W, such as a wall When cleaning, the front end of the arm portion 35 (the front end portion 42b) does not collide with the obstacle W, and the obstruction W of the bristles 36 protrudes from the front end of the arm portion 35. The nearby floor F can be cleaned. Therefore, the cleaning performance of the floor surface F located at the edge of the obstacle W can be further improved.

  In the second embodiment, as in the third embodiment shown in FIG. 8, the first brush portion 32 is a brush bristle located in the vicinity of the tip 42 b of the brush bristle mounting portion 42 of the arm portion 35. Even if only 36 is inclined with respect to the arm portion 35 toward the distal end side of the arm portion 35 rather than the distal end portion 42b of the bristle mounting portion 42 which is the distal end portion of the arm portion 35, the same effect can be obtained. it can.

  Further, in each of the above embodiments, the side brush 18 may be disposed only on one side in front of the suction port 24 of the main body case 12 or the like.

  Further, the electric blower 13 may be omitted, and the rotating brush 28 may be used to scrape the dust on the floor surface F and collect the dust onto the dust collecting unit 14.

  It is also possible to adopt a configuration in which the rotating brush 28 and the brush motor 29 are not provided, and dust is sucked from the suction port 24 by the suction force of the electric blower 13.

  Further, the number of the first brush portions 32 and the second brush portions 33 per side brush 18 is not limited to four and can be arbitrarily set. The first brush portion 32 and the second brush portion 33 The number may not be the same.

  Furthermore, as long as at least the distal end side of the arm portion 35 has elasticity, the proximal end side may not have elasticity.

  According to at least one embodiment described above, the arm 35 having elasticity at least at the tip side protrudes from the swivel 31 of the side brush 18 along the radial direction, and from the arm 35 toward the floor F. By inclining the protruding plurality of brush bristles 36 in the direction opposite to the rotation direction R of the swivel unit 31, the distance D between the lower portion of the main body case 12 and the floor surface F changes depending on the type of the floor surface F, for example. However, the brush bristles 36 can be in uniform contact with the floor surface F, and dust can be effectively scraped off.

  In other words, the autonomously traveling vacuum cleaner 11 is connected to the charging stand and placed on the floor F even when it is not cleaned (charged state, standby state). It always contacts the floor surface F. Therefore, when the brush bristles are simply perpendicular to the floor surface, the tip side (bristles) of the bristles pressed against the floor surface are scattered and bent back and forth in the direction of rotation of the side brush. It tends to be in a state with a so-called wrinkle. In particular, when the floor surface is a carpet, for example, the entire vacuum cleaner 11 sinks into the floor surface due to its own weight, so the distance between the tip of the brush hair and the surface of the floor (carpet) becomes shorter, and the brush hair Is more strongly pressed against the floor surface, and the tip side of the bristle tends to be more scattered. If the tip side of the bristle remains bent in this way, the contact between the bristle and the floor surface will be uneven, and it will be easier for dust to escape when the side brush is rotated during cleaning. At the same time, dust enters the inside of the bristles of the bristles and becomes entangled, making it difficult to remove them from the bristles and making maintenance complicated. Therefore, in each of the above-described embodiments, the front end side of the vertical brush bristles 36 projecting downward facing the floor surface F is inclined in advance toward the side opposite to the rotation direction R of the swivel unit 31 (side brush 18). By placing the tip of the bristle 36 on the floor F, the tip of the brush bristles will always fall in contact with a certain direction and come into contact with it. At this time, when the side brush 18 is rotated, dust can be reliably caught and removed, and it is difficult for dust to enter the inside of the bristles of the bristles 36, and maintenance of the side brush 18 is facilitated.

  Moreover, since the bristle 36 of the first brush portion 32 is a so-called vertical type in which the vertical and vertical components with respect to the floor surface F are larger than the horizontal component, the groove portion G formed on the floor surface F (for example, The tip of the brush bristles 36 can easily enter from the upper side with respect to a flooring joint or the like), and the dust in the groove G can be scraped out effectively.

  Further, the side brush 18 includes brush bristles 46 bundled in a bundle shape so as to protrude in an inclined manner toward the floor surface F with respect to the swivel portion 31, so that the brush bristles 36 having different inclination directions and The brush bristles 46 rotate while sliding at different angles with respect to the floor surface F as the side brush 18 rotates, so that dust is more effective for various types of dust and various types of floor surfaces F. Can be removed.

  Although several embodiments of the present invention have been described, these embodiments are presented by way of example and are not intended to limit the scope of the invention. These novel embodiments can be implemented in various other forms, and various omissions, replacements, and changes can be made without departing from the scope of the invention. These embodiments and modifications thereof are included in the scope and gist of the invention, and are included in the invention described in the claims and the equivalents thereof.

11 Vacuum cleaner
12 Body case
15 Drive wheels
18 Side brush as swivel cleaning section
31 Turning part
35 arms
36 brush hair
46 Brush hair F Floor surface to be cleaned

Claims (3)

Body case,
A drive wheel that allows the main body case to travel on the surface to be cleaned;
A swivel cleaning part provided in the main body case,
The swivel cleaning unit is
A swivel unit having a rotation axis along a direction substantially perpendicular to the surface to be cleaned and provided so as to be rotatable in parallel with the surface to be cleaned;
At least the tip side has elasticity, and an arm portion protruding from the turning portion,
An electric vacuum cleaner comprising: a plurality of brush hairs that are inclined in a direction opposite to the rotation direction of the swivel part, project from the arm part toward the surface to be cleaned, and scrape off dust on the surface to be cleaned. The electric vacuum cleaner according to claim 1, wherein any one of the bristle has a distal end projecting toward the distal end side of the arm portion rather than the distal end portion of the arm portion. The electric swivel cleaning unit includes a plurality of brush bristles arranged in a bundle so as to protrude in an inclined manner toward the surface to be cleaned with respect to the swivel unit. Vacuum cleaner.

Images