JP2012029975A - Wall surface cleaner - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a wall surface cleaner capable of being suitably used even for a low-story building having unevenness in a wall surface, allowing cleaning of the wall surface.SOLUTION: This wall surface cleaner 1 includes: a handle part 3 grasped by workers P; and a head part 7 installed at the end of the handle part 3. The head part 7 has: a pair of adjacently installed brushes 5; and a DC motor rotating the pair of brushes 5 reversely to each other. In the wall surface cleaner 1, the workers P grasp the handle part 3 such that the head part 7 is positioned in a position corresponding to dirt of the wall surface Sf, and can easily remove the dirt of the wall surface Sf by rotating the pair of brushes 5 installed at the head part 7. In particular, because the pair of brushes 5 of the head part 7 rotate reversely to each other, slight movement of the brushes 5 is hard to occur when the brushes 5 abut on the wall surface Sf, so that the cleaning work is facilitated.

Description

  The present invention relates to a wall surface cleaning device for cleaning a wall surface of a building or the like with a rotating brush.

  Conventionally, various apparatuses for cleaning dirt and the like adhering to the wall surface of a building have been developed. For example, Patent Literature 1 describes a wall washer that moves up and down along a wall surface by a wire suspended from a suspension device installed on a rooftop. Further, Patent Document 2 describes a cleaning device that is held and used by an operator on a gondola that moves up and down along a wall surface.

JP 09-206259 A JP 2007-229597 A

  These devices are useful in high-rise buildings with continuous monotonous walls. However, it is too large to clean the outer wall of a low-rise house (about 2 stories, the highest wall is about 6m above the ground), and the shape of the wall is partially changed and uneven. However, there is a problem that it is necessary to avoid interference with the wall surface and various devices are required for the device, and there are problems in practical use.

  An object of the present invention is to solve such problems of the prior art and to provide a wall surface cleaning device that can be suitably used for a low-rise building with uneven walls.

  In order to solve the above problems, the present invention is a wall surface cleaning device that cleans a wall surface of a building with a rotating brush, and a handle portion gripped by an operator, and a head portion attached to an end portion of the handle portion. The head unit includes a pair of brushes arranged side by side and a drive unit that rotates the pair of brushes in the reverse direction.

  In this wall surface cleaning device, the operator grips the handle so that the head comes to a position corresponding to the dirt on the wall and rotates the pair of brushes installed on the head to easily remove the dirt on the wall. be able to. In particular, the pair of brushes installed side by side in the head portion rotate in the opposite directions, so that when the brush comes into contact with the wall surface, the brush is hardly shaken and the cleaning operation is easy to perform. As a result, it can be suitably used for a low-rise building with uneven walls.

  Further, the head portion includes a pair of brush mounting portions each having a brush attached thereto, and a transmission mechanism that transmits a driving force of the driving unit to each of the pair of brush mounting portions. A brush support portion that rotatably supports the rotating shaft portion, and a rotation shaft portion that rotates the brush support portion in response to the driving force transmitted through the transmission mechanism. The rotation axis of the brush rotates the rotation shaft portion. It is preferable that it is eccentric with respect to the axis.

  In the above configuration, since the rotation axis of the brush is eccentric with respect to the rotation axis of the rotation shaft portion, when the rotation shaft portion rotates the brush support portion, the brush moves circularly (revolves) in a certain direction along with the rotation. Exercise. Here, the brush is rotatably supported by the brush support portion, and also rotates along with the revolving motion. As a result, the brush revolves while rotating, so a synergistic cleaning effect of both movements can be expected. Further, when the pressing force for pressing the brush against the wall surface is increased, the frictional resistance received from the wall surface is increased and the rotational speed associated with the rotation of the brush is decreased, so that the cleaning action can be appropriately adjusted. As a result, it is possible to change the movement (spinning) of the brush just by changing the pressing force of the brush pressed against the wall surface, and to switch the appropriate movement according to the state and components of dirt, the shape of the wall surface, etc. It can be given to the brush regardless of the operation.

  Furthermore, the wall surface cleaning apparatus according to the present invention includes an elevation angle varying mechanism that connects the handle portion and the head portion, and the elevation angle varying mechanism includes a handle portion and an inclination angle of the head portion that can be changed with respect to the handle portion. A hinge portion that connects the head portion, and an elastic portion that holds the inclination angle of the head portion with respect to the handle portion at a predetermined angle and that imparts an elastic force to the head portion according to angular displacement from the predetermined angle. Is preferred. In this configuration, since the head portion is tilted with respect to the handle portion, the tilt angle of the head portion changes when the brush is pressed against the wall surface, and the brush is held at an appropriate position facing the wall surface, thereby causing uneven cleaning. It is difficult and can be efficiently cleaned. Further, since the elastic force according to the angular displacement of the head portion is applied to the head portion by the action of the elastic portion, the head portion is prevented from swinging unnecessarily, and the brush is stably pressed against the wall surface. Can do.

  Furthermore, the wall surface cleaning apparatus according to the present invention includes a housing that houses the main body portion of the drive unit and that projects through the drive shaft connected to the main body portion. A drive pulley that is detachably fixed to the drive shaft, a driven pulley that is disposed outside the housing and is detachably fixed to the rotating shaft, and a drive pulley and a driven pulley. It is preferable to have an endless belt wound around. For example, even if the wall surface is cleaned by rotating the brush while spraying the cleaning liquid, the above configuration includes a housing that houses the main body of the drive unit. Can be protected from liquid. In addition, the drive pulley of the transmission mechanism is detachable from a drive shaft that penetrates the housing and protrudes to the outside. Further, the driven pulley is detachable from the rotating shaft, and the endless belt is a drive pulley and a driven pulley. It is easy to replace and replace. As a result, by changing to another driving pulley or driven pulley having a different diameter, it is possible to easily change to a desired torque or rotational speed.

  ADVANTAGE OF THE INVENTION According to this invention, it can be used suitably also for a low-rise building with an uneven | corrugated wall surface, and a wall surface can be cleaned appropriately.

It is a perspective view which expands and shows a head part concerning the wall surface washing apparatus concerning the embodiment of the present invention. It is sectional drawing along the II-II line of FIG. It is sectional drawing along the III-III line of FIG. It is the fragmentary sectional view which shows the state which looked at the head part from right side, and shows a part broken away. It is sectional drawing which expands and shows a brush unit. It is sectional drawing of the elevation angle variable mechanism which shows the state which inclined the head part with respect to the handle part, and connects a handle part and a head part. It is a figure which shows the use condition of the wall surface washing apparatus which concerns on this embodiment. It is a figure which shows typically the relationship between the revolution movement of a brush, and autorotation.

  Preferred embodiments of the present invention will be described below with reference to the drawings.

  As shown in FIG. 1 and FIG. 7, the wall surface cleaning device (wall surface cleaning device) 1 according to this embodiment is attached to the handle 3 gripped by the operator P and the tip of the handle 3 and rotates. A head unit 7 including a pair of brushes 5, a pump 9 that pumps cleaning liquid to the head unit 7, a cleaning liquid tank 11 that stores the cleaning liquid, a cleaning liquid hose 13 that transfers the cleaning liquid from the cleaning liquid tank 11 to the head unit 7, and a pump 9 and a power cord 15 for supplying a current to the head unit 7. The cleaning liquid hose 13 and the power cord 15 are wound in a coil shape and have flexibility and stretchability.

  The wall cleaning device 1 is gathered in a compact configuration so that the worker P can carry it, and the pump 9 and the cleaning liquid tank 11 are housed in a special case 17 with a belt, and the waist Pouch-like style of the worker P It is configured to be carried around the waist. In the present embodiment, a mode in which the waist Pouch is mounted on the waist of the worker P will be described as an example. However, the cleaning liquid tank 11 and the pump 9 are placed on the ground, or the worker P carries the back on the back. There may be.

  The handle portion 3 is configured to be stretchable by combining pipe-shaped members made of FRP in a nested manner like a tripod, and can be set to an arbitrary length. Furthermore, each pipe-shaped member can be fixed at an arbitrary expansion / contraction position by rotating one side forward with respect to the other, and connected by a twist lock mechanism that can be expanded and contracted by releasing the reverse rotation. Has been. In the present embodiment, the cleaning liquid hose 13 and the power cord 15 wound in a coil shape are drawn out of the handle portion 3, but the handle portion 3 as long as it can be accommodated in the handle portion 3. It can also be arranged so as to pass through the inside.

  As shown in FIGS. 2 to 4, the head unit 7 includes a base plate 21 made of an aluminum plate. 23a is screwed. In addition, on both sides of the DC motor 23, a driven shaft support portion 25 that rotatably supports the driven shafts (rotating shaft portions) 27A and 27B is fixed. A peripheral edge 21a of the base plate 21 is bent to the upper surface side, and a cover 22 that covers the upper surface of the base plate 21 in a box shape is fixed to the peripheral edge 21a. The cover 22 is made of vinyl chloride. The body portion 23 a and the driven shaft support portion 25 of the DC motor 23 are covered with a cover 22, and the base plate 21 and the cover 22 constitute the housing 20.

  The driven shaft support portion 25 (see FIG. 5) includes a substantially cylindrical housing 25a fixed to the base plate 21, stepped driven shafts 27A and 27B that pass through the base plate 21 and are inserted into the housing 25a, and a housing. The narrow shaft portion 27a of the driven shafts 27A and 27B is annularly enclosed in 25a, and is spaced by a spacer 25b and screwed to the upper end of the housing 25a with two upper and lower ball bearings 25c and 25d. An annular top plate 25e that comes into contact with the upper ball bearing 25c, and a nut 27f that is screwed into the thin shaft portion 27a of the driven shafts 27A and 27B and presses the upper ball bearing 25c are provided. In addition, by arranging the ball bearings 25c and 25d in two upper and lower rows, the shake of the driven shafts 27A and 27B is suppressed, which is effective for stable holding.

  Further, an elbow pipe 31 (see FIGS. 3 and 4) that guides the cleaning liquid to the cleaning liquid injection nozzle 29 is fixed to the upper surface of the base plate 21. The cleaning liquid injection nozzle 29 is fixed to the lower surface (outer surface) of the base plate 21, and the cleaning liquid injection nozzle 29 and the elbow pipe 31 communicate with each other through the communication hole of the base plate 21. A cleaning liquid hose 13 penetrating the cover 22 is connected to the elbow pipe 31 so as to avoid the DC motor 23. The power cord 15 that passes through the cover 22 is connected to the DC motor 23 so as to be energized.

A drive shaft 23b (see FIGS. 2 and 3) connected to the main body 23a of the DC motor 23 penetrates the base plate 21 and protrudes to the outside. A drive pulley 24 is fixed to the drive shaft 23b by a detachable configuration outside the housing 20. This detachable configuration can be realized by, for example, a hexagon socket head bolt. The drive shaft 23b is formed with _two upper and lower V-shaped grooves V ₁ and V ₂ , and _one V-shaped groove closer to the base plate 21 is the first V-shaped groove V ₁ and the other V-shaped groove V _1. shaped groove is a second V-shaped groove _{V 2.} Since the drive pulley 24 is detachable from the drive shaft 23b, the drive pulley 24 can be replaced with another drive pulley having a different diameter as appropriate and easily.

The pair of driven shafts 27A and 27B that are rotatably supported by the pair of driven shaft support portions 25 pass through the base plate 21 and project outside. On one of the driven shaft 27A, in the outside of the housing 20, the first driven pulley 32A which corresponds to the first V-shaped groove V ₁ of the drive pulley 24 is fixed by freely configured detachable. Further, the other driven shaft 27B, in the outside of the housing 20, the second driven pulley 32B corresponding to the second V-shaped groove V ₂ of the drive pulley 24 is fixed by freely configured detachable. This detachable configuration can be realized by, for example, a hexagon socket head bolt. The first driven pulley 32A or the second driven pulley 32B is detachable with respect to the driven shafts 27A and 27B. The driven pulley can be easily and appropriately replaced.

The outer periphery of the first driven pulley 32A is formed with a V-shaped groove Va, the first V-shaped groove V ₁ of the drive pulley 24 is a V-shaped groove Va of the first driven pulley 32A, endless The first V belt 33A is wound around. Similarly, the outer periphery of the second driven pulley 32B are formed V-shaped groove Vb, the second V-shaped groove V ₂ of the drive pulley 24 in the V-shaped groove Vb of the second driven pulley 32B is The endless second V belt 33B is wound around.

  One of the first V-belt 33A and the second V-belt 33B, for example, the first V-belt 33A is twisted by 180 degrees and is wound around so as to intersect in the middle. The other V-belt, for example, the second V-belt 33B is looped around without being twisted. Therefore, when the drive shaft 23b rotates forward, the second driven pulley 32B rotates forward, and the first driven pulley 32A rotates backward. That is, since the first driven shaft 27A and the second driven shaft 27B have the same diameter as the driven pulleys 32A and 32B, the first driven shaft 27A and the second driven shaft 27B follow the rotation of the drive shaft 23b, have the same rotational speed, the same torque, and the reverse. It is configured to rotate.

  The drive pulley 24, the first V belt 33A, the second V belt 33B, the first driven pulley 32A, the second driven pulley 32B, the first driven shaft 27A, and the second driven shaft 27B are used to form a DC motor. The transmission mechanism 35 is configured to transmit the driving force of 23 to each of the pair of brush mounting portions 37A and 37B. Then, a pair of brush mounting part 37A, 37B is demonstrated. Since the pair of brush mounting portions 37A and 37B have substantially the same configuration, the details will be described focusing on one brush mounting portion 37B fixed to the second driven shaft 27B with reference to FIG. The description of the other brush mounting portion 37A fixed to the first driven shaft 27A is omitted.

  As shown in FIG. 5, the second driven shaft 27B is formed with a notch 27b for transmitting a rotational force on the distal end side with respect to the second driven pulley 32B. The notches 27b are formed on both sides of the rotation axis Sa of the second driven shaft 27B, and a brush support portion 39 is fitted and screwed to the shaft end portion 27c where the notches 27b are formed. ing.

  The brush support portion 39 includes a root portion 39a fitted to the shaft end portion 27c, an arm portion 39b protruding from the root portion 39a in a direction perpendicular to the rotation axis Sa, and a reaction weight portion provided at the tip of the arm portion 39b. 39c.

  The eccentric shaft portion 41 is screwed to the root portion 39a at a position on the opposite side of the reaction weight portion 39c with the rotation axis Sa interposed therebetween. The eccentric shaft portion 41 is formed of a half screw bolt, and a ball bearing 43 is arranged around the shaft portion in a columnar shape, and the head portion 41a holds the ball bearing 43 in cooperation with an annular pressing plate 45. is doing. The annular holding plate 45 is screwed to the brush holder 47.

  The brush holder 47 has a circular brush fixing plate 47a, a cylindrical inner wall portion 47b erected at the center of the brush fixing plate 47a, and a cylindrical shape formed so as to surround the entire orbit of the reaction weight portion 39c. And an outer wall portion 47c. The inner wall portion 47b is disposed so as to surround the eccentric shaft portion 41 and the ball bearing 43, and the end surface of the inner wall portion 47b abuts on the annular holding plate 45 and is fastened and fixed by a plurality of screws. The center line Sb of the eccentric shaft portion 41 passes through the center of the brush fixing plate 47a and becomes the rotation axis Sb of the brush 5. The rotation axis Sb of the brush 5 is eccentric about 5 mm with respect to the rotation axis Sa of the driven shaft 27B.

  The arm portion 39b extends in the direction opposite to the direction toward the center line of the eccentric shaft portion 41 (rotation axis of the brush 5) Sb with respect to the rotation axis Sb of the driven shaft 27B, and its tip The reaction weight part 39c is provided. The reaction weight portion 39c is arranged so as to be opposite to the rotation axis Sb of the brush 5 with respect to the rotation axis Sa of the driven shaft 27B, thereby causing the center of gravity position to be shifted (when the brush 5 is rotated). Reduce vibration.

  The brush 5 is detachably fixed to the brush holder 47 with a hook-and-loop fastener structure. Specifically, one of the hook-and-loop fasteners is bonded and fixed to the back surface of the brush fixing plate 47a of the brush holder 47, that is, the back surface of the surface on which the inner wall portion 47b is erected. On the other hand, the brush 5 is formed such that a large number of linear members 5a made of resinous or other materials protrude from the circular substrate 5b. The circular substrate 5b has a hook-and-loop fastener attached to the brush fixing plate 47a. The other is bonded and fixed. In the present embodiment, a mode in which the brush 5 is detachably attached to the brush holder 47 by the hook-and-loop fastener structure will be described. However, the brush 5 is fixed to the brush holder 47 by adhesive fixing or screwing. It may be.

  The head unit 7 (see FIGS. 2, 3, and 6) is coupled to the tip of the handle unit 3 through an elevation angle varying mechanism 50. The elevation angle changing mechanism 50 includes a pipe holder 50a fixed to the handle portion 3, a handle portion fixing plate 50b fixed to the pipe holder 50a, and a spring hinge 51 connecting the handle portion fixing plate 50b and the base plate 21. I have.

  The pipe holder 50a is a short tube with a flange, and is inserted into the tip of the handle 3 and screwed. The flange of the pipe holder 50a is screwed to the handle fixing plate 50b. The handle portion fixing plate 50b is made of an aluminum plate, and a central hole H through which the cleaning liquid hose 13 and the power cord 15 pass is formed in the central portion where the pipe holder 50a is fixed.

  The spring hinges 51 are provided on the left and right, and each spring hinge 51 is configured by attaching a torsion spring (elastic portion) 55 to a hinge portion (hinge portion) 53. The hinge portion 53 is held at a predetermined position where both pieces 53a are at right angles (predetermined angles) by the action of the torsion spring 55, and one piece 53a is screwed to the handle portion fixing plate 50b, The one piece 53 a is screwed to the base plate 21.

  The hinge portion 53 connects the handle portion 3 and the head portion 7 so that the inclination angle of the head portion 7 with respect to the handle portion 3 can be changed. Further, the inclination angle of the head portion 7 with respect to the handle portion 3 is held at a predetermined angle by the torsion spring 55, and an elastic force corresponding to the angular displacement from the predetermined angle is applied to the head portion 7. Since the inclination angle of the head portion 7 with respect to the handle portion 3 can be freely changed, the cover 22 of the housing 20 is formed with a cut K for avoiding interference due to the inclination of the handle portion 3.

  The wall surface cleaning device 1 (see FIG. 7) includes a battery (power supply means) that supplies power to the DC motor 23 and the pump 9. The battery is mounted on, for example, a battery holder with a hook, and is used in a state where it can be carried by being hooked on the belt of an operator's pants. The battery may be in the form of being installed on the ground as in the case of the cleaning liquid tank 11 or may be mounted on the waist of the worker P like a waist pouch. In addition, an AC power supply may be used without using a battery. In that case, power may be supplied to the DC motor 23 of the head unit 7 through an AC adapter as appropriate.

  Moreover, the wall surface cleaning apparatus 1 includes a switch box (control means) connected to the DC motor 23 and the pump 9 so as to be able to transmit and receive control signals wirelessly or by wire, and accepts an operation input of the worker P, An ON / OFF signal can be transmitted to the DC motor 23 and the pump 9. In the present embodiment, the cleaning liquid tank 11 is attached to the dedicated case 17 in which the cleaning liquid tank 11 is housed, but a portable remote controller or the like may be used.

  Next, with reference to FIG. 7, the usage method of the wall surface washing apparatus 1, the effect | action and effect of the wall surface washing apparatus 1 are demonstrated.

  When using the wall surface cleaning device 1, water is previously sprayed on the wall surface Sf using a water supply hose to make it easier to remove dirt. Next, the operator P extends the handle 3 in accordance with the wall surface position to be cleaned. Thereafter, the operator P grips the vicinity of the lower end of the handle portion 3, raises the handle portion 3 so that the head portion 7 is up, and brings the brush 5 into contact with the position to be cleaned on the wall surface Sf. At this time, the elevation angle (inclination angle formed by the head portion 7 and the handle portion 3) is changed by the weight of the head portion 7 or a light force applied by the operator P, and the contact surface of the brush 5 faces the wall surface Sf. Abut.

  Next, the DC motor 23 is turned on to rotate the brush 5. Further, the cleaning operation is performed while the pump 9 is driven to spray the cleaning liquid as appropriate, and the brush 5 is appropriately moved in the vertical and horizontal directions.

  During brush cleaning, the force for pressing the brush 5 against the wall surface Sf is appropriately adjusted depending on the state of the dirt and the wall surface Sf, thereby changing the balance between the rotation and revolution of the brush 5. For example, fast rotation or slow rotation with respect to the revolution rate, and further, the rotation may be completely stopped and only the revolving motion may be performed. After completion of the cleaning operation, the dirt remaining on the wall surface Sf is washed away by watering or the like.

  Next, with reference to FIG. 8, the effect | action and effect which are show | played when the rotation axis Sb of the brush 5 is eccentric with respect to rotation axis Sa of driven shaft 27A, 27B are demonstrated. FIG. 8 is a diagram schematically illustrating the relationship between the rotation axis Sa of the driven shafts 27 </ b> A and 27 </ b> B and the rotation axis Sb of the brush 5.

  As shown in FIG. 8, when the driven shafts 27A and 27B are rotated by the driving of the DC motor 23, the brush 55 revolves around the rotation axis Sa of the driven shafts 27A and 27B according to the rotation. At this time, if the brush 5 (brush holder 47) is fixed to the eccentric shaft portion 41 of the brush mounting portions 37A and 37B, it does not rotate. However, since the brush 5 is rotatable with respect to the eccentric shaft portion 41, inertia force Thus, it rotates around the eccentric shaft portion 41 at a cycle earlier than the revolution cycle. For example, when the driven shafts 27A and 27B rotate about the rotation angle θ1, the point A on the outer periphery of the brush 5 rotates by the rotation angle θa larger than θ1 to reach the point Aa, and the driven shafts 27A and 27B rotate at the rotation angle θ2. When rotated about the same time, the point A on the outer periphery of the brush 5 rotates by a rotation angle θb larger than θ2 and reaches the point Ab.

  As described above, since the brush 5 revolves around the rotation axis Sa of the driven shafts 27A and 27B while rotating, a synergistic cleaning effect of both motions can be expected. Further, when the pressing force for pressing the brush 5 against the wall surface Sf is increased, the frictional resistance received from the wall surface Sf is increased and the rotational speed associated with the rotation of the brush 5 is decreased, so that the cleaning action can be adjusted appropriately. As a result, the movement (spinning) of the brush 5 can be changed only by changing the pressing force of the brush 5 pressed against the wall surface Sf, and the appropriate state corresponding to the state and components of dirt, the shape of the wall surface Sf, etc. The movement can be given to the brush 5 regardless of the operation of a switch or the like.

  As described above, in the wall surface cleaning device according to the present embodiment, the operator P holds the handle portion 3 so that the head portion 7 comes to a position corresponding to the dirt on the wall surface Sf, and the pair of brushes 5 installed on the head portion 7. The wall surface Sf can be easily cleaned by rotating. In particular, since the pair of brushes 5 installed side by side in the head portion 7 rotate in the opposite directions, the brush 5 is less likely to be shaken when the brush 5 abuts against the wall surface Sf, and the cleaning operation is easy to perform. As a result, it can be suitably used for a low-rise building with an uneven wall surface Sf.

  Furthermore, the wall surface cleaning apparatus 1 includes an elevation angle varying mechanism 50 that connects the handle portion 3 and the head portion 7, and the head portion 7 is inclined with respect to the handle portion 3, so that the brush 5 is pressed against the wall surface Sf. Since the inclination angle of the head portion 7 is changed and the brush 5 is held at an appropriate position facing the wall surface Sf, cleaning unevenness hardly occurs and the cleaning operation can be performed efficiently. Furthermore, since the elastic force according to the angular displacement of the head portion 7 is applied to the head portion 7 by the action of the torsion spring (elastic portion) 55, the head portion 7 is prevented from swinging unnecessarily, and the wall surface Sf is restrained. Thus, the brush 5 can be pressed stably.

  Furthermore, since the wall surface cleaning apparatus 1 includes the housing 20 that houses the main body portion 23a of the DC motor (drive unit) 23, the main body portion 23a can be protected from a liquid such as a cleaning liquid. The drive pulley 24 of the transmission mechanism 35 is detachably attached to a drive shaft 23b that penetrates the housing 20 and protrudes to the outside. Further, the first driven pulley 32A and the second driven pulley 32B are connected to each driven shaft 27A. 27B, and the first V-belt 33A and the second V-belt 33B are wound around the driving pulley 24 and each driven pulley, so that replacement and replacement are easy. As a result, by changing to another driving pulley or driven pulley having a different diameter, it is possible to easily change to a desired torque or rotational speed.

  As described above, the wall surface cleaning device 1 according to the embodiment has been described as an example of the present invention. However, the present invention is not limited only to the above embodiment, and for example, cleaning that peels the wall surface coating with a rotating brush. The aspect which concerns on the cleaning apparatus used for the objective is also contained. In the above-described embodiment, an example in which the elevation angle variable mechanism that connects the handle portion and the head portion is illustrated, but the head portion is not variable with respect to the handle portion, and may be fixed. In the above-described embodiment, the configuration using the V belt and the V pulley (drive pulley or driven pulley) as the transmission mechanism is exemplified. However, the configuration using the round belt and the pulley for the round belt may be used. .

  DESCRIPTION OF SYMBOLS 1 ... Wall surface cleaning apparatus (wall surface cleaning apparatus), 3 ... Handle | pattern part, 5 ... Brush, 7 ... Head part, 20 ... Housing | casing, 23 ... DC motor (drive part), 23a ... Main-body part, 23b ... Drive shaft, 24 ... driving pulley, 27A, 27B ... driven shaft (rotating shaft), 32A ... first driven pulley, 32B ... second driven pulley, 33A ... first V belt (endless belt), 33B ... second V Belt (endless belt), 35 ... transmission mechanism, 37A, 37B ... brush mounting part, 39 ... brush support part, 50 ... elevation angle varying mechanism, 53 ... hinge part (hinge part), 55 ... torsion spring (elastic part), P ... worker, Sf ... wall surface of building, Sa ... rotation axis of driven shaft, Sb ... rotation axis of brush.

Claims (4)

A wall surface cleaning device for cleaning a wall surface of a building with a rotating brush,
A handle that is gripped by the operator;
A head portion attached to an end portion of the handle portion,
The wall surface cleaning device, wherein the head unit includes a pair of brushes installed side by side and a drive unit that rotates the pair of brushes in a reverse direction. The head portion includes a pair of brush mounting portions to which the brushes are respectively attached, and a transmission mechanism that transmits a driving force of the driving unit to each of the pair of brush mounting portions.
The brush mounting portion includes a brush support portion that rotatably supports the brush, and a rotation shaft portion that rotates the brush support portion by receiving a driving force transmitted via the transmission mechanism,
The wall surface cleaning apparatus according to claim 1, wherein the rotation axis of the brush is eccentric with respect to the rotation axis of the rotation shaft portion. An elevation angle varying mechanism that connects the handle portion and the head portion;
The elevation angle varying mechanism includes a hinge portion that connects the handle portion and the head portion so that an inclination angle of the head portion with respect to the handle portion can be freely changed.
An elastic portion that holds an inclination angle of the head portion with respect to the handle portion at a predetermined angle and applies an elastic force according to an angular displacement from the predetermined angle to the head portion. The wall surface cleaning apparatus according to 1 or 2. The housing further includes a housing that houses the main body of the driving unit and that projects through the drive shaft connected to the main body.
The transmission mechanism is disposed outside the housing and is detachably fixed to the drive shaft, and is disposed outside the housing and is detachably fixed to the rotating shaft portion. The wall surface cleaning device according to claim 2, further comprising: a driven pulley that is driven, and an endless belt that is wound around the driving pulley and the driven pulley.

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