JP5649038B2 - Vacuum cleaner suction and vacuum cleaner - Google Patents

Description

  The present invention relates to a vacuum cleaner suction tool and a vacuum cleaner.

  As a conventional vacuum cleaner suction tool, there is one as shown in FIG. 10 (see, for example, Patent Document 1).

  FIG. 10 is a cross-sectional view of a conventional vacuum cleaner suction tool described in Patent Document 1. A conventional suction tool for a vacuum cleaner includes a rotating brush 101 that is driven to rotate by an electric motor disposed therein, and the cleaning piece 102 provided in the longitudinal direction of the outer periphery of the rotating brush 101 scrapes dust on the surface 103 to be cleaned. I was trying to raise it.

Japanese Patent No. 4401619

  However, in the rotary orbit of the rotary brush 101 of the conventional vacuum cleaner suction tool as described in Patent Document 1 above, due to the circular motion, the width of the rotary brush 101 contacting the surface 103 to be cleaned is larger than the diameter of the rotary brush 101. It will be limited. For this reason, the dust removal performance has been enhanced by combining the rotational speed UP, the amount of the cleaning piece 102, and the negative ion addition function. Moreover, the space | interval of the front wall of the suction tool for cleaners and the grounding position of the cleaning piece 102 was large, and had the subject that the part which cannot be cleaned arises.

  The present invention solves the above-mentioned conventional problems, and effectively utilizes the width of the rotating brush by rotating the rotating brush in a substantially rectangular path and continuously applying a cleaning piece along the surface to be cleaned. An object of the present invention is to provide a vacuum cleaner suction tool and a vacuum cleaner that can perform high dust removal performance.

In order to solve the above-described conventional problems, a vacuum cleaner suction tool according to the present invention includes a rotatable rotating brush provided with a plurality of cleaning pieces in contact with a surface to be cleaned, and a rotating shaft of the rotating brush. A rotary brush storage chamber that is disposed in parallel with the rotary brush to store the rotary brush, a suction port that opens at a lower portion of the rotary brush storage chamber, a drive source that drives the rotary brush via a transmission means, and a fixed gear; A rotating mechanism composed of a planetary gear whose center of rotation rotates with respect to the fixed gear along a rotating track, and the rotating brush has a cross section in a direction perpendicular to the rotation axis thereof. shape has deployed the cleaning strip to be substantially triangular also comprise the cleaning strip, at least a portion of the distal end of the cleaning strip are in the form so as to be positioned at the apex of the substantially triangular, the To the planetary gear of the rotating mechanism The rotating brush is connected coaxially, the gear ratio of the fixed gear and the planetary gear is 4: 3, and the cleaning is located at the apex of the substantially triangular cross-sectional shape of the rotating brush from the rotation center of the planetary gear. The distance L to the tip of the piece is set so that L = 2.5r with respect to the reference circle diameter r of the planetary gear, and the tip of the cleaning piece located at the apex of the approximately triangular shape of the rotating brush The tip of the cleaning piece protruding from the suction port of the rotating brush storage chamber is configured to rotate the suction tool for the cleaner with respect to the surface to be cleaned. It is designed to rotate while drawing a trajectory that is almost parallel to the advancing and retreating direction, and the tip of the cleaning piece continuously pushes and sweeps almost parallel to the surface to be cleaned. To do. Moreover, since the tip of the cleaning piece reaches the front wall of the vacuum cleaner suction tool, it is possible to remove almost the dust at the wall even during the cleaning of the wall.

  Further, the range in which the cleaning piece comes into contact with the surface to be cleaned is substantially the same as the width of the rotary brush, and the range in which the cleaning piece can be cleaned up to the front wall of the vacuum cleaner suction tool is widened. Moreover, there is an advantage that vibration is also suppressed because the cleaning piece abuts continuously rather than reciprocating. In addition, this substantially square track can be created by setting the ratio and displacement dimensions of the gears that constitute the transmission means that transmits the power of the drive source to the rotating brush, enabling smooth rotation even in a small space and removing dust. While improving performance, it is possible to achieve the same light weight and noise reduction as before.

Moreover, the vacuum cleaner of this invention is equipped with the electric blower and the suction tool for vacuum cleaners of any one of Claims 1-4 , and exhibits the outstanding dust removal performance, and a wall side etc. Therefore, it is possible to provide an easy-to-use vacuum cleaner with little dust collection.

  In the vacuum cleaner suction tool of the present invention, the cleaning brush tip of the rotating brush moves to sweep dust in a track substantially parallel to the surface to be cleaned, and exhibits high dust removal performance. Can be cleaned more cleanly. In addition, since the ground contact width of the cleaning piece is wider than before, the number of revolutions can be reduced, which leads to a reduction in driving sound and motor power.

  Furthermore, since it is possible to clean up to the front wall of the vacuum cleaner suction tool, it is possible to provide a vacuum cleaner suction tool that is easy to use, for example, it is possible to remove dust from the wall more than ever before. . In addition, by using a vacuum cleaner suction tool with good dust removal performance, it is possible to provide an easy-to-use vacuum cleaner with good dust suction performance.

Whole perspective view of the vacuum cleaner which connected the suction tool for vacuum cleaners in Embodiment 1 of this invention Plan sectional view of the vacuum cleaner suction tool (A) Perspective view of rotating brush unit of suction tool for vacuum cleaner, (b) Disassembled perspective view of rotating brush unit (A) Side sectional view of the rotating brush portion of the vacuum cleaner suction tool, (b) Side sectional view of the left gear unit portion of the vacuum cleaner suction tool, (c) Passive pulley portion of the vacuum cleaner suction tool Side sectional view of (A) Side sectional view of the rotating brush portion of the vacuum cleaner suction tool, (b) Side sectional view of the left gear unit portion of the vacuum cleaner suction tool, (c) Passive pulley portion of the vacuum cleaner suction tool Side sectional view of (A) Side sectional view of the rotating brush portion of the vacuum cleaner suction tool, (b) Side sectional view of the left gear unit portion of the vacuum cleaner suction tool, (c) Passive pulley portion of the vacuum cleaner suction tool Side sectional view of (A) Side sectional view of the rotating brush portion of the vacuum cleaner suction tool, (b) Side sectional view of the left gear unit portion of the vacuum cleaner suction tool, (c) Passive pulley portion of the vacuum cleaner suction tool Side sectional view of Plan view of the brush body of the same rotating brush Dimension setting explanation of the brush unit Side sectional view of a conventional vacuum cleaner suction tool

A first aspect of the present invention is a rotatable rotary brush provided with a plurality of cleaning pieces in contact with a surface to be cleaned, and a rotary brush that houses the rotary brush by arranging a rotation shaft of the rotary brush parallel to the surface to be cleaned. A storage chamber, a suction port opened at a lower portion of the rotary brush storage chamber, a drive source for driving the rotary brush via a transmission means , a fixed gear, and a rotation center with respect to the fixed gear along a rotation path A rotating mechanism composed of a planetary gear that rotates itself while rotating, and the rotary brush has a substantially triangular shape including the cleaning piece in a cross-sectional shape in a direction perpendicular to the rotation axis thereof. The cleaning piece is disposed, and at least a part of the tip of the cleaning piece is formed to be positioned at the apex of the substantially triangular shape, and the rotating brush is coaxially mounted on the planetary gear of the turning mechanism. Connected to the fixed gear And the planetary gear has a gear ratio of 4: 3, and a distance L from the rotation center of the planetary gear to the tip of the cleaning piece located at the apex of the substantially triangular cross-sectional shape of the rotating brush is defined as with respect to the reference circle diameter r, L = 2.5R set to be the relationship, the tip of the cleaning piece is located at the apex of the substantially triangular of the rotary brush, so as to rotate drawing a trajectory substantially rectangular With this configuration, the tip of the cleaning piece protruding from the suction port of the rotating brush storage chamber rotates in a path substantially parallel to the advancing / retreating direction of the vacuum cleaner suction tool with respect to the surface to be cleaned. In this way, the tip of the cleaning piece performs the operation of continuously sweeping and sweeping substantially parallel to the surface to be cleaned, so that high dust removal performance is exhibited. Moreover, since the tip of the cleaning piece reaches the front wall of the vacuum cleaner suction tool, it is possible to remove almost the dust at the wall even during the cleaning of the wall.

Further, the range in which the cleaning piece comes into contact with the surface to be cleaned is substantially the same as the width of the rotary brush, and the range in which the cleaning piece can be cleaned up to the front wall of the vacuum cleaner suction tool is widened. Moreover, there is an advantage that vibration is also suppressed because the cleaning piece abuts continuously rather than reciprocating. In addition, this substantially square track can be created by setting the ratio and displacement dimensions of the gears that constitute the transmission means that transmits the power of the drive source to the rotating brush, enabling smooth rotation even in a small space and removing dust. While improving performance, it is possible to achieve the same light weight and noise reduction as before.

In the second invention, in particular, the rotation mechanism of the first invention is arranged at both ends of the rotating brush, and the rotation position and the rotation speed are synchronized with each other. Since the rotating brush has a substantially square rotation trajectory in its entire length, the rotating brush has a high dust removal performance over a wide range of the vacuum cleaner suction tool. is there.

In a third aspect of the invention, in particular, the rotating brush of the first or second aspect of the invention includes a shaft body having a plurality of grooves for holding the cleaning pieces in the longitudinal direction, and the grooves are formed at the apexes of substantially triangular shapes of the rotating brush. It is formed by a plurality of linear grooves arranged in the axial direction and a plurality of spiral grooves arranged crossing the linear grooves, and a cleaning piece is continuously provided on the rotating surface of the rotating brush. As a result, it is possible to improve the dust removal performance and reduce vibration during rotation.

In particular, the fourth invention fixes the cleaning piece of the third invention continuously to the straight groove and the spiral groove, and the protruding length of the cleaning piece is set to the portion arranged in the straight groove and the spiral. The tip of the cleaning piece is different from the part arranged in the groove, and the tip position of the cleaning piece can create a substantially triangular projection shape. Therefore, it is possible to provide a smooth rotation trajectory with a simple structure, thereby providing a vacuum cleaner suction tool with low vibration and excellent dust removal performance.

An electric vacuum cleaner according to a fifth aspect of the present invention comprises an electric blower and the vacuum cleaner suction tool according to any one of claims 1 to 4 , and exhibits excellent dust removal performance and near the wall. Therefore, it is possible to provide an easy-to-use vacuum cleaner with little dust collection.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. Note that the present invention is not limited to the embodiments.

(Embodiment 1)
The vacuum cleaner suction tool in Embodiment 1 of this invention is demonstrated using FIGS. FIG. 1 is an overall perspective view of a vacuum cleaner to which a vacuum cleaner suction tool according to the present embodiment is connected.

As shown in FIG. 1, the electric vacuum cleaner in the present embodiment is provided with an electric blower chamber 3 containing an electric blower 2 in the rear part of the vacuum cleaner main body 1, and suction in the front part of the vacuum cleaner main body 1. A dust collection chamber (not shown) for collecting the collected dust is detachably stored, and a dust collection chamber 4 communicating with a suction side opening (not shown) of the electric blower 2 is disposed.

  A pair of traveling wheels 6 are attached to the left and right sides of the lower rear portion of the cleaner body 1 so as to be rotatable with respect to a horizontally disposed traveling shaft (not shown). Similarly, a traveling caster 7 is attached to the lower portion so as to be rotatable about a vertical axis, and to be rotatable with respect to a traveling shaft (not shown) disposed horizontally. A connection joint portion 9 provided at one end of the suction hose 8 is detachably connected to the front surface of the vacuum cleaner main body 1, and an air inlet 10 communicating with the dust collection chamber 4 is provided.

  The other end of the suction hose 8 is provided with a tip joint portion 12 having a handle 11 having an operation portion 11a for an operator to hold during cleaning and to operate the cleaner body 1. . One end of the proximal end of the extension tube 13 configured to be extendable or connectable is detachably connected to the distal end joint portion 12 of the suction hose 8, and the other end on the distal end side of the extension tube 13 is connected to this It is detachably connected to the vacuum cleaner suction tool 16 in the embodiment.

  2 and the subsequent drawings, with respect to the traveling direction of the vacuum cleaner suction tool 16, the direction in which the operator holding the handle 11 pushes forward (forwards) the vacuum cleaner suction tool 16 is forward (in FIG. 2). The direction in which the operator pulls back (retracts) the vacuum cleaner suction tool 16 is referred to as backward (rightward in FIG. 2). Further, the right side when viewed from the operator in the direction in which the vacuum cleaner suction tool 16 is advanced is referred to as the right side (upward in FIG. 2), and the left side is referred to as the left side (downward in FIG. 2).

  As shown in FIG. 2, the main body 17 of the vacuum cleaner suction tool 16 forms a rotary brush storage chamber 18 and a drive source storage chamber 19. A suction port 20 for sucking dust that opens toward 15 is provided. A connecting pipe 21 is attached to the rear central portion of the main body 17 of the vacuum cleaner suction tool 16 so as to be tiltable, and the tip of the extension pipe 13 is detachably fitted and fixed to the opening end of the connecting pipe 21. .

  The suction port 20 and the connection pipe 21 are in communication with each other via an intake passage 22, and 23 is an opening provided in a partition wall 24 that separates the rotary brush storage chamber 18 and the drive source storage chamber 19. Note that the means for forming the main body 17 of the vacuum cleaner suction tool 16 and the means for tilting the connecting pipe 21 may be known ones and are not directly related to the present invention, and thus detailed description thereof is omitted.

  In the rotary brush storage chamber 18, the rotary brush unit 25 has its rotation axis parallel to the surface to be cleaned 15 (for the sake of explanation, the position is indicated by a virtual line), and the vacuum cleaner suction tool 16 advances and retreats. It is deployed perpendicular to the direction.

  The drive source storage chamber 19 stores an electric motor 26 as a drive source of the rotating brush unit 25 and is driven in conjunction with the operation of the cleaner body 1. A driving pulley 28 is press-fitted into the tip of the shaft 27 of the electric motor 26, and a belt 30 is suspended between the driving pulley 28 and a passive pulley 29 in the rotating brush storage chamber 18.

  The rotary brush unit 25 includes three brush bodies 31 that contact the surface to be cleaned 15 as cleaning pieces, a rotary brush 33 that is arranged on a shaft body 32, and a right that is provided at both ends of the rotary brush 33. It comprises a gear unit 35 and a left gear unit 34, and a support plate 36 for connecting and fixing the right gear unit 35 and the left gear unit 34 (FIG. 3).

  The left gear unit 34 includes a fixed gear 37, a planetary gear 38, and a stepped shaft 41 formed integrally with two shafts (a fixed shaft 39 and a floating shaft 40) whose center positions are displaced.

  In the present embodiment, the fixed gear 37 is an internal gear having 20 teeth and a reference circle diameter of 20 mm, and the planetary gear 38 is a spur gear having 15 teeth and a reference circle diameter of 15 mm.

  The displacement amount Δh between the two shafts of the stepped shaft 41, the fixed shaft 39 and the floating shaft 40 is 2.5 mm, and is ½ of the difference between the reference circle diameter of the fixed gear 37 and the reference circle diameter of the planetary gear 38. The distance is set.

  The stepped shaft 41 is integrally formed with a connecting shaft 42 having a large diameter coaxially with the fixed shaft 39, and an anti-rotation 43 subjected to H-cut processing is integrally formed at the end of the connecting shaft 42. .

  The left lid 44 fitted to the fixed gear 37 has a bearing 45 that rotatably supports the connecting shaft 42 of the stepped shaft 41 at the center, and is combined with the fixed gear 37 formed in a box shape. The position of the planetary gear 38 in the thrust direction is restricted, and the detent 43 and the fixed shaft 39 of the stepped shaft 41 are exposed from the left lid 44.

  The planetary gear 38 is rotatably supported by the planetary shaft 40 of the stepped shaft 41 via a small bearing 46, and a hexagonal column connecting body 47 formed integrally with the end of the planetary gear 38 is used for a vacuum cleaner. The suction tool 16 protrudes toward the center. The end of the rotating brush 33 is connected to the hexagonal column connecting body 47 and rotates in conjunction with the planetary gear 38.

  The dust entry preventing plate 48 is positioned at the end of the fixed gear 37 and is set so as to be rotatable with respect to the fixed gear 37 and the planetary gear 38.

  The passive pulley 29 is connected to the rotation stop 43 formed on the connecting shaft 42 of the stepped shaft 41 connected to the planetary gear 38 of the left gear unit 34, and the driving force of the electric motor 26 is the driving pulley 28, the belt 30, It is decelerated and transmitted to the left step shaft 41 via the passive pulley 29.

An auxiliary bearing 49 that rotatably supports the fixed shaft 39 is connected to the fixed shaft 39 of the stepped shaft 41 and is inserted and held in the left recess 50 of the rotating brush storage chamber 18.
The right gear unit 35 has the same configuration as the left gear unit 34 described above, and similarly has a fixed gear 37, a planetary gear 38, and a stepped shaft 41 at positions facing the left gear unit 34.

  Further, the plate 48 is also set so as to be rotatable with respect to each of the fixed gear 37 and the planetary gear 38 similarly to the left gear unit 34.

  The right lid 54 fixes the bearing 45 like the left lid 44, but has a shape that covers the stepped shaft 41, and its end is inserted into the right recess 55 of the rotating brush storage chamber 18. Is retained.

  The support plate 36 is connected and fixed to the left and right fixed gears 37 and is inserted into a fixed port 51 formed above the rotating brush storage chamber 18. As described above, the support plate 36 is held in the left and right recesses 50 and 55 and the fixing port 51, so that the rotary brush unit 25 is placed in the rotary brush storage chamber 18 in both the vertical and horizontal directions and the rotation direction. It is held so as not to move.

  The brush body 31 of the rotary brush 33 is divided into three rows of linear grooves 56 formed on the shaft body 32 that are equally divided and a substantially spiral spiral groove 57 that is arranged so as to intersect with the three rows of linear grooves 56. By alternately fixing, a continuous hair transplantation state is formed around the rotating brush 33 with a single brush body.

  Further, the three brush bodies 31 arranged in the brush body 31 have different brush hair lengths in one brush body 31, and when attached to the shaft body 32, the brush hairs located in the linear grooves 56 are arranged. The distance between the tip 52 and the center position of the rotating brush 33 is set to be 2.5 times the radius r of the planetary gear 38.

  The height of the bristle tip 53 located in the spiral groove 57 is such that the distance between the bristle tip 53 and the center position of the rotary brush 33 is 1.8 times the radius r of the planetary gear 38. It is cut and formed like this.

  In this state, the cross-sectional shape (projected shape) of the rotating brush 33 including the brush body 31 is a substantially triangular shape called “Reuleaux triangle”.

  A rotating brush 33 provided with stop plates 58 arranged at both ends so that the brush body 31 does not come out of the shaft body 32 is coaxially connected to a hexagonal column connection body 47 of the planetary gear 38 arranged on the left and right sides. The left and right gear units 34 and 35 are joined by a support plate 36 to form the rotary brush unit 25.

  At this time, the positions of the left and right planetary gears 38 with respect to the fixed gear 37 are in the same phase, and the rotating brush 33 is maintained in parallel with the surface to be cleaned 15.

  A pair of traveling rollers 59 provided on the bottom surface of the drive source storage chamber 19 assists the front-rear direction travel of the vacuum cleaner suction tool 16. The fixed brush 60 fixed to the bottom surface of the rotary brush storage chamber 18 is This is to block the dust that is swept away by the rotating brush 33 so that it does not escape backward.

  The lower protrusion height of the rotating brush 33 from the brush body 31 and the suction port 20 of the fixed brush 60 is 1 to 1.5 mm over the surface 15 to be cleaned, similar to the conventional vacuum cleaner suction tool. The wrapping is set, and the pressing force is applied to the surface 15 to be cleaned, so that the dust removal performance is reliably exhibited.

  Next, operation | movement and an effect | action of the vacuum cleaner suction tool 16 and the vacuum cleaner (vacuum cleaner main body 1) comprised as mentioned above are demonstrated.

  4-7 is sectional drawing which shows the time change of the rotational drive state of the rotary brush of the suction tool for vacuum cleaners in this Embodiment (in the state seen from the left side of the suction tool main body, the downward direction of a figure is The cross section of the rotary brush 33, the cross section of the left gear unit 34, and the cross section of the passive pulley 29 portion are shown.

  Each figure shows each cross section when the passive pulley 29 has made 1/4 rotation (FIG. 5), 3/5 rotation (FIG. 6), and 3/4 rotation (FIG. 7), with FIG. 4 as an initial value. The change of the movement position and rotation position of a part is represented. The idle shaft 40 of the stepped shaft 41 is enlarged and indicated by a two-dot chain line to indicate the center position.

  A power cord (not shown) is pulled out from the vacuum cleaner main body 1, a power plug (not shown) attached to the tip thereof is inserted into a wall outlet, and the operation unit 11a provided on the handle 11 is operated to operate the electric blower 2 and the vacuum cleaner. When the electric motor 26 incorporated in the suction tool 16 is energized, the suction force provided by the electric blower 2 acts on the suction port 20 provided on the bottom surface of the rotary brush storage chamber 18 of the vacuum cleaner suction tool 16, and the wooden floor or carpet. The dust on the surface 15 to be cleaned is scraped up by the rotating brush 33, sucked, and conveyed to the dust collecting chamber 4 through the extension pipe 13 and the suction hose 8, and collected there.

  When the electric motor 26 is driven, the passive pulley 29 rotates clockwise in the direction shown in FIG.

  At the same time, the stepped shaft 41 connected to the passive pulley 29 rotates clockwise around the connecting shaft 42, and the integrally formed idler shaft 40 also rotates clockwise around the connecting shaft 42 (FIG. 5 ( c)).

  The planetary gear 38 rotatably connected to the idle shaft 40 rotates counterclockwise while moving the center position while meshing with the fixed gear 37 due to the movement of the idle shaft 40 (FIG. 5B).

As described above, in the present embodiment, the left and right gear units 34 and 35 serve as a rotation mechanism that rotates the tip of the brush body 31 while drawing a substantially rectangular path.
At the same time, the rotating brush 33 coaxially connected to the planetary gear 38 moves while rotating counterclockwise in the same manner as the planetary gear 38.

  The rotating brush 33 is also connected to the planetary gear 38 of the right gear unit 35, and rotational force is applied to the right gear unit 35 via the rotating brush 33, so that the left and right gear units 34, 35 are synchronized with each other. Rotate. For this reason, the rotating brush 33 rotates and moves while being always parallel to the surface 15 to be cleaned.

  When the stepped shaft 41 rotates 1/4, the rotating brush 33 rotates 1/3 due to the difference in gear ratio between the fixed gear 37 and the planetary gear 38, but the center position also moves, so that it is substantially 1/12. The tip 52 of the brush body 31 located at the apex of the substantially triangular shape of the brush 33 is rotated to the lower end.

  However, at the same time, the center of the rotating brush 33 has moved to the upper end of the orbital shaft 40 circular path, so that the length of the tip of the brush body 31 protruding from the suction port 20 is the same as the initial value state shown in FIG. (FIG. 5A).

  The rotating brush unit 25 in which the stepped shaft 41 is rotated by 1/2 is symmetric with respect to the initial value state shown in FIG. 4, so the description is omitted and the state in which the stepped shaft 41 is rotated 3/5 is shown in FIG. Shown in

  When the stepped shaft 41 rotates 3/5, the idle shaft 40 moves to the lower right and the planetary gear 38 connected to the idle shaft 40 rotates 1/5.

  At this time, the vertex of the substantially triangular shape of the rotating brush 33 reaches the vicinity of the position farthest from the center of the connecting shaft 42.

  Next, the state where the stepped shaft 41 has rotated 3/4 will be described. The idler shaft 40 is located at the lower end of the rotation path of the idler shaft 40, but the rotary brush 33 has a substantially triangular side portion (the tip 53 of the bristle located in the spiral groove 57) rotates toward the lower end. Therefore, the protrusion margin from the suction port 20 at the tip of the brush body 31 is the same as the initial value state (FIG. 7).

  As described above, the substantially triangular cross-sectional shape including the brush body 31 of the rotating brush 33 rotates while drawing the substantially rectangular track 61 shown in FIGS. The tip of the brush body 31 does not protrude significantly from the range.

  This is based on the dimensional relationship shown in FIG. 9 and is known as a trajectory drawn by the “Reuleaux triangle”.

  In the first embodiment, the brush body in which the lengths of the brush bristles arranged in the linear groove 56 and the spiral groove 57 of the shaft body 32 are alternately changed to form the substantially triangular shape for drawing the substantially square trajectory. It is formed by attaching three 31s. Further, in order to synchronize the correlation between the rotation angle of the rotating brush 33 and the movement of the center position of the rotating brush 33, the center positions of two gears having a gear ratio of 4: 3 are displaced and installed. A square orbit is realized.

  Further, by providing a stepped shaft 41 that smoothly converts the rotational motion of the electric motor 26 into the movement of the center of the planetary gear 38, a complicated rotational trajectory is realized while saving space.

  This type of vacuum cleaner suction tool 16 is equipped with an air turbine or a small motor that rotates by suction as a drive source for weight reduction, and the rotating brush 33 exerts a torque that sweeps up the surface to be cleaned. In addition, a speed reduction mechanism is usually provided in the driving force transmission means, and a belt speed reduction mechanism or a gear speed reduction mechanism is used.

  In the configuration of the present embodiment, the gear ratio of the fixed gear 37 and the planetary gear 38 is set to a gear ratio of 4: 3, and the center of the planetary gear 38 is rotated, so that the speed is substantially reduced to 1/3. A sufficient rotational torque can be exhibited.

  It is also possible to omit the belt 30 and to directly connect the drive source to the stepped shaft 41 instead of the passive pulley 29.

  The substantially square orbit 61 drawn by the apex of the approximately triangular shape of the rotating brush 33 is approximately the same width as the width of the rotating brush 33 and approximately the same width as the suction port 20. Moreover, it is close to the front wall 62 of the vacuum cleaner suction tool 16, and means that the tip of the brush body 31 reaches the front wall 62 of the vacuum cleaner suction tool 16.

  That is, the tip of the bristles of the rotary brush 33 of the vacuum cleaner suction tool 16 in the present embodiment pushes the surface 15 to be cleaned across the entire width of the suction port 20 from the front wall of the vacuum cleaner suction tool 16. This function is effective, and dust on the surface 15 to be cleaned can be continuously scraped over a wide range. Therefore, high dust removal performance can be exhibited, and dust can be removed to the edge of the wall, leaving almost no remaining material.

  In addition, since the brush body 31 disposed on the outer periphery of the shaft body 32 of the rotating brush 33 sequentially abuts not only the apex of the substantially triangular shape but also the brush body 31 at the side portion against the surface 15 to be cleaned, the vibration of the rotating brush 33 In addition, it is possible to reduce the rotation speed because of high dust removal performance, and noise reduction can be easily realized.

  Note that the substantially quadrangular rotation trajectory has a configuration in which the center on the planetary gear 38 side is fixed and the rotating brush 33 is connected to the fixed gear 37 in the two gears shown in the first embodiment. Although it is possible to draw even if the center of 37 is rotated, it is not limited which of the two gears is rotated, but the small planetary gear 38 side is rotated, and the rotating brush 33 is provided there. Needless to say, it is advantageous to connect the two in terms of downsizing the whole.

  In the present embodiment, the left and right gear units 34 and 35 that create a rotational motion in synchronism are provided at both ends of the rotating brush 33. However, if the length of the rotating brush 33 is short, the left gear on the motor 26 side is provided. It is obvious that the unit 34 alone can realize the circular path and can perform cleaning with the substantially square circular path.

  However, in order to set the width of the vacuum cleaner suction tool 16 wide and perform cleaning with a small number of operations, the long rotating brush 33 stably contacts the surface to be cleaned 15 over its entire length. Can exhibit a wide range of excellent effects.

  Of course, in that case, a structure may be provided in which means for directly transmitting the drive by the electric motor 26 to not only one side but also to both sides, and the rotating brush 33 rotates while maintaining a parallel state with respect to the surface 15 to be cleaned. If so, one end may be a guide means for guiding the track with a rail or the like.

  As described above, the vacuum cleaner suction tool according to the present invention exhibits high dust removal performance by the rotating brush that draws a substantially square rotation trajectory, and includes a vacuum cleaner suction tool as well as an electric vacuum cleaner. It can be used for a wide range of electrical equipment.

1 Vacuum cleaner body 15 Surface to be cleaned
16 Vacuum cleaner suction device 18 Rotating brush storage chamber 19 Drive source storage chamber 20 Suction port 25 Rotating brush unit 26 Electric motor (drive source)
28 Drive pulley 29 Passive pulley 30 Belt (transmission means)
31 Brush body (cleaning piece)
32 Shaft body 33 Rotating brush 34 Left gear unit (rotating mechanism)
35 Right gear unit (rotating mechanism)
36 support plate 37 fixed gear 38 planetary gear 39 fixed shaft 40 idle shaft 41 stepped shaft 42 connecting shaft 43 detent 44 left lid 45 bearing 46 small bearing 47 connector 48 plate 49 auxiliary bearing 51 fixed port 52, 53 tip 54 right side Lid 56 Linear groove 57 Spiral groove 58 Stop plate 61 Track 62 Front wall

Claims (5)

A rotatable rotating brush provided with a plurality of cleaning pieces in contact with the surface to be cleaned;
A rotating brush storage chamber for storing the rotating brush by arranging a rotating shaft of the rotating brush in parallel with a surface to be cleaned;
A suction port opened at the bottom of the rotating brush storage chamber;
A drive source for driving the rotating brush via a transmission means ;
A fixed gear, and a rotation mechanism composed of a planetary gear that rotates with respect to the fixed gear along the rotation path while rotating itself.
The rotating brush is provided with the cleaning piece so that a cross-sectional shape in a direction perpendicular to the rotation axis thereof is substantially triangular including the cleaning piece, and at least a part of the tip of the cleaning piece is substantially the same. It is formed to be located at the apex of the triangle,
The rotating brush is coaxially connected to the planetary gear of the rotating mechanism, the gear ratio of the fixed gear and the planetary gear is 4: 3, and the substantially triangular shape of the rotating brush from the rotation center of the planetary gear. The distance L to the tip of the cleaning piece located at the apex of the cross-sectional shape is set so that L = 2.5r with respect to the reference circle diameter r of the planetary gear,
By configuring the tip of the cleaning piece located at the apex of the approximately triangular shape of the rotating brush to rotate while drawing a substantially rectangular orbit ,
For a cleaner in which the tip of the cleaning piece protruding from the suction port of the rotating brush storage chamber rotates with respect to the surface to be cleaned while drawing a track substantially parallel to the advancing and retreating direction of the suction tool for the cleaner. Suction tool. The suction tool for a vacuum cleaner according to claim 1, wherein a rotating mechanism is provided at both ends of the rotating brush, and the rotating position and the rotating speed are synchronized with each other. The rotating brush includes a shaft body having a plurality of grooves in the longitudinal direction for holding a cleaning piece, and the plurality of linear grooves arranged in the axial direction at the positions of the substantially triangular vertices of the rotating brush and the straight line. The suction tool for a vacuum cleaner according to claim 1 or 2 , wherein the suction tool is formed by a plurality of spiral grooves arranged so as to intersect with the grooves. The cleaning piece is continuously fixed to the linear groove and the spiral groove, and the protruding length of the cleaning piece is made different between a portion arranged in the linear groove and a portion arranged in the spiral groove. vacuum cleaner suction tool according to 3. The electric vacuum cleaner provided with the electric blower and the suction tool for vacuum cleaners of any one of Claims 1-4 .