JP2003000505A - Motor-driven wiping device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a motor-driven wiping device, which is compact, reduces noises, can wipe the surface of the floor without non-uniformity and facilitates sanitary management. SOLUTION: In the motor-driven wiping device for wiping the surface of the floor, this device is provided with a rotator to be rotated by a driving motor around a perpendicular axis, at least three wheels 14 attached to the rotator for supporting the load of the motor-driven wiping device and allowing the rotation of the rotator by turning on the surface of the floor with the rotation of the rotator and a wiping part 20 freely attachably and detachably fitted to the rotator for wiping the surface of the floor in contact with the surface of the floor.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electric wiping device capable of performing not only dry wiping on a floor surface, but also wiping with water, wiping with a detergent, wiping with a disinfectant solution, waxing and the like.

[0002]

2. Description of the Related Art As a conventional electric cleaning device, there is known one in which a pad moistened with a cleaning liquid or a polishing liquid is attached, and the pad is rotated by a motor to polish the floor surface (for example, See Japanese Patent Application Laid-Open No. 2-243129). In addition, a product that collects the cleaning liquid remaining after cleaning the floor surface with a squeegee and sucks it with a suction pump has been commercialized.

[0003]

However, in order to rotate the pad, a large driving force is required and the size of the device becomes large. Therefore, it can be used in large spaces such as corridors and lobbies, but it is not suitable for cleaning narrow floors such as hospital rooms and laboratories. In addition, since it is noisy, it is not suitable for cleaning a patient in a hospital room or a room where laboratory animals are kept.

From these reasons, hospital hospitals and operating rooms,
Floor cleaning, which requires hygiene control, such as pharmaceutical facilities and laboratory animal rooms, is performed with mops. However, it takes a lot of time to manage the hygiene of mops, which is a big problem. In addition, since it is difficult to adjust the moistening condition of the disinfectant solution or water with respect to the mop, unevenness occurs during wiping, and a portion where the disinfectant solution or water collects is generated on the floor surface.

Therefore, an object of the present invention is to provide an electric wiping device that is compact and has a low noise level, can clean the floor surface evenly, and can easily manage hygiene.

[0006]

In order to achieve the above object, the present invention is an electric wiping device for wiping a floor surface,
A rotating body that rotates around a vertical axis by a drive motor,
Three or more wheels attached to the rotating body to support the load of the electric wiping device, and to rotate the rotating body to allow the rotating body to rotate by rotating on the floor surface;
And a wiping unit that is detachably attached to the rotating body to contact the floor surface and wipe the floor surface.

When the rotating body is rotated by driving the motor,
Three or more wheels and the wiping unit swivel with the rotating body to clean the floor surface. At this time, since the weight of the device is supported by the rolling wheels, the frictional force generated between the floor surface and the wiping unit is reduced as much as possible. Therefore, the wiping unit can be rotationally driven by a small driving force, and the load applied to the wiping unit is made uniform, so that the floor surface can be evenly and evenly wiped.

The present invention limits the structure and characteristics of wheels.
Instead of the wheel has a rotating shaft (axle),
Direction (front and rear), that is, a fixed cap that rolls only around the axle.
Use a caster or a flexible caster that changes the direction of the axle freely.
A ball that can roll in multiple directions (ball
Casters) may be used. When using flexible casters
The wheel of the universal caster is constant in consideration of the stability of operation.
It is preferable to install it so that it can easily rotate along the circumference of
Good It is preferable that the wheels are mounted at an equal angular pitch slightly inside the outer peripheral edge away from the output shaft of the motor. In addition to the above wheels, it is preferable that the present apparatus is provided with wheels for transportation. Further, although it is preferable to provide an operating rod for operating the apparatus in the vertical and horizontal directions, drive wheels for moving the apparatus during wiping may be provided separately.

In the present invention, a woven cloth, a non-woven cloth, a knitted cloth or the like can be generally used as the cleaning section, and a brush having innumerable bristles can also be adopted. Further, the cleaning unit may be configured such that a waste cloth or the like can be directly attached / detached to / from the rotary body, or may be a cassette type in which the waste cloth and the bracket are integrally attached / detached to / from the rotary body.

[0010]

DETAILED DESCRIPTION OF THE INVENTION An embodiment of the present invention will be described below with reference to the drawings. Overall Structure: As shown in FIG. 1, the present apparatus includes a main body case 1. A base plate 2 is fixed to a lower opening 1a of the main body case 1 shown by a chain double-dashed line in FIG. 2, and a drive motor 4 is fixed to the base plate 2. A rotating body 50 is attached to the output shaft 5 of the drive motor 4 shown in FIG.

The rotating body 50 includes a three-pronged rotary plate 11 and a waste rotary plate 22. The three-pronged rotary plate 11 and the waste rotary plate 22 are arranged substantially along a horizontal plane, and are driven to rotate by a drive motor 4 about an output shaft (vertical shaft) 5 provided along a vertical line. It
As will be described later, the waste (cleaning portion) 20 is provided on the lower surface of the waste rotating plate 22 so as to come into contact with the floor surface F shown in FIG.
Is attached, and the waste 20 is rotationally driven by the drive motor 4 to clean the floor surface F.

Structure of main part: Next, the structure of the main part of the present apparatus will be described in order from above. The main body case 1 shown in FIG.
The base plate 2 is fitted into the lower opening 1a and fixed by a fastening member (not shown) to form a waterproof structure. A tank 37 for storing a liquid agent (hereinafter, simply referred to as a liquid agent) such as cleaning water, a disinfecting liquid or wax is arranged in the main body case 1 so as to be vertically insertable and removable. Base plate 2 shown in FIG.
A drive motor 4 integrated with the reduction gear head is fixed to the motor via bolts and nuts (not shown) via four spacers 3. A rotation signal plate 6 having three protrusions is fitted to the output shaft 5 of the drive motor 4, and the key 7 rotates the rotation signal plate 6 and the output shaft 5 of the drive motor 4 integrally. It is fixed.

Photosensor Above the protrusion 6a of the rotation signal plate 6, a photosensor 8 is fixed to the base plate 2 via a bracket (not shown) so as to face the protrusion 6a. The photo sensor 8 has a light emitting portion and a light receiving portion. When the rotation signal plate 6 rotates and the protruding portion 6a faces the photosensor 8, the light emitted from the light emitting portion is reflected by the protruding portion 6a and enters the light receiving portion of the photosensor 8. The light receiving portion of the photo sensor 8 detects the incident light.

The outer diameter of the waterproof seal 9 for the rotary shaft is fitted to the inner diameter of the seal receiver 10. The seal receiver 10 is fixed to the back surface of the base plate 2 with bolts and nuts (not shown). The connecting shaft 12, which is fixed to the three-pronged rotary plate 11 with bolts and nuts (not shown), is fitted together with the key 7 to the output shaft 5 of the drive motor 4 protruding from the back surface of the base plate 2 and fixed with the stop screw 13. ing.

Wheels The three-pronged rotary plate 11 has three notches 11c, and three wheels 14 rolling on the floor are rotatably attached to the ends of the three-pronged rotary plate 11. ing.
The rotation shafts of the three wheels 14 are position-adjusted and attached so as to intersect at the rotation center of the three-forked rotary plate 11, as described later. Three positioning pins 15 are planted on the back surface of the three-pronged rotary plate 11. Furthermore, the trifurcation rotary plate 1
A detachable screw 16 having a threaded portion extending downward is fixed to the back surface of 1 with a bolt (not shown).

Wiping section The waste rotary plate 22 is provided with three sets of mounting plates equal in number to the wheels 14. The mounting plate is
A first waste attachment plate 17 and a second waste attachment plate 19 are provided, respectively. First waste mounting plate 17
Are fixed to the bracket 18 with screws (not shown).
First waste mounting plate 17 and second waste mounting plate 19
A pair of butterfly plates 21 with an urging spring are attached between and, and the second waste attachment plate 19 is urged upward by the spring force and is in contact with the bracket 18.

The waste 20 is attached to the attachment plates 17 and 19. To attach the waste 20 to the attachment plates 17 and 19, the second waste attachment plate 19
Is bent downward against the biasing spring of the butterfly plate 21 with a biasing spring, and the tips of the first waste attaching plate 17 and the second waste attaching plate 19 are brought close to each other. Two bag-shaped parts 20a, 20a
The first waste attachment plate 17 and the second waste attachment plate 1
Attach it to 9 so that you can wear slippers. On the other hand, the waste 20 can be removed in the reverse order. Therefore, the first and second waste attachment plates 1
The waste 20 can be attached to and detached from the attachment plate by making the center of the attachment plate composed of 7 and 19 bendable. Through holes 17a, 19 are formed in the centers of the first waste cloth mounting plate 17 and the second waste cloth mounting plate 19.
a is provided.

FIG. 8 shows the wheel 14 and the mounting plate 17,
It is a top view which shows the positional relationship of 19. As shown in FIG. 8, the mounting plates 17 and 19 are provided between the turning directions C of the wheels 14. Therefore, the mounting plate 1
The waste 20 attached to the wheels 7 and 19 is provided between the turning directions C of the wheels 14 so as to wipe the turning marks of the wheels 14 on the floor surface.

Spring Member A butterfly plate 23 provided with a spring member 23a is mounted between the bracket 18 and the waste rotating plate 22 shown in FIG. 3, and the waste 20 is directed downward by the spring force of the spring member 23a. It is pressed against the floor surface F with a constant pressure.
The bracket 18 is in contact with the end face of the waste rotating plate 22 so that the first waste attaching plate 17 and the second waste attaching plate 19 do not rotate downward more than necessary.

The waste rotary plate 22 is provided with three positioning holes, and after the positioning holes are fitted to the three positioning pins 15 planted in the three-pronged rotary plate 11,
A fixing knob (not shown) having a female screw portion is attached and detached with a screw 16
The waste rotary plate 22 can rotate integrally with the three-pronged rotary plate 11 by being screwed into the.

In order to facilitate cleaning and disinfection of the apparatus itself, each member attached to the waste rotating plate 22 is
The waste rotary plate 22 can be attached and detached in an integrated unit state as it is attached. Further, the three-pronged rotary plate 11 to which the wheels 14 are attached may be easily detachable. Furthermore, the three-pronged rotary plate 11 and the waste rotary plate 22 may be integrated and detachable.

Roll Pump A roll pump (ironing pump) 25 shown in FIG. 2 is fixed to the base plate 2 via a fixing member (not shown). The roll pump 25 pushes the tube from the outside to squeeze the liquid agent in the tube and sends it. As shown by the arrow in FIG. 2, this roll pump 25 is
Liquid is sucked from 7 through a tube (not shown), and the base plate 2
The liquid agent is fed downward through a tube (not shown) passing through the hole 2a provided in the. As described later, the roll pump 25 passes the cutout portion 11c (FIG. 3) of the three-pronged rotary plate 11 to drop the liquid agent and drops the liquid agent into the through holes 17a and 19a of the mounting plates 17 and 19, respectively. . Therefore, the liquid agent passes through the through holes 17 a and 19 a and is dropped on the upper surface of the waste 20.

Operation Rod and Carrying Mechanism At the rear of the main body case 1, a shaft 29 is provided to
Individual transport wheels 28 are rotatably mounted.
The shaft 29 is inserted into a pedestal 27 fixed to the base plate 2 and is prevented from coming off by a retaining ring (not shown). A cylindrical member (not shown) that is integrally fixed to the operating rod 26 is fitted to the substantially central portion of the shaft 29. The cylindrical member is a compression spring (not shown) and is biased to the right in FIG. Therefore, when the operating rod 26 is brought close to the vertical state, the operating rod 26 is locked by being guided by the cam groove 27a formed in the pedestal 27. On the other hand, in order to unlock the operating rod 26, the operating rod 26 is slid in the axial direction of the shaft 29 against the compression spring (not shown) to form the cam groove 27a.
To unlock.

By locking the operating rod 26 in the vertical direction and slightly tilting the operating rod 26, the transport wheels 28 come into contact with the floor surface. By further tilting the operation rod 26, the transport wheels 2
Three wastes 20 and three wheels 14 are lifted from the floor with 8 as a fulcrum. By transporting the electric wiping device in this state, it is possible to prevent dirt caused by the waste 20 and the wheels 14 coming into contact with the floor surface during transport.

In the case 1, the drive motor 4
A rechargeable battery (battery) 30 and a control circuit 31 for supplying electric power to the above are incorporated.

An operation box 32 for the operator to set and operate is attached to the operation rod 26 of FIG.
The operator operates the operation box 32 to set the rotation speed of the waste 20, the liquid agent, and the operation mode, which will be described later.

As shown in FIG. 4, each wheel 14 has a swing plate 3
3 and the angle plate 34 are rotatably attached to the three-pronged rotary plate 11, and the swing plate 33 is swingably attached to the angle plate 34. The oscillating plate 33 is biased in the clockwise direction by a torsion spring 35, and the protruding portion 33 a of the oscillating plate 33 is in contact with the angle plate 34. This allows
When there is a step or unevenness on the floor surface and the wheel 14 receives an impact force from the floor surface when passing through the floor surface, the impact is generated by bending against the biasing force of the torsion spring 35. Power can be absorbed. When the impact force exceeds the allowable value, the swing plate 33
Of the rocking plate 3 by contacting the three-pronged rotary plate 11 with the protruding portion 33b of the
The swing amount of 3 is regulated. However, even in this case, the wheels 14
The protrusion 33b of the oscillating plate 33 is positioned outside the outer diameter of the wheel so that it can rotate.

Control Structure: As shown in FIG. 5A, the central control circuit (microcomputer) 42 includes a drive motor control circuit 43, a pump motor control circuit 44, a sensor circuit 45, an operation setting circuit 46 and a display circuit. 47 are connected to each other via an interface (not shown).

The drive motor control circuit 43 drives and controls the motor M1 of the drive motor 4, and the pump motor control circuit 44 drives and controls the motor M2 of the roll pump 25. The sensor circuit 45 processes a signal from the photosensor 8 that reads the rotation state of the rotation signal plate 6 rotated by the drive motor 4, and the projection 6a of the rotation signal plate 6 from the photosensor 8 is processed. The detection signal is output to the central control circuit 42. The CPU 42a calculates the rotation speed of the drive motor 4 based on the detection signal.

The operation setting circuit 46 is for sending information to the central control circuit 42, which is set by the operator in the operation box 32 (FIG. 1) of the handle portion 26a (FIG. 1). The setting information includes setting of the rotation speed of the waste 20, setting of a liquid agent described later, operation mode designation, power ON / OFF, and the like. The display circuit 47 is turned on.
It is for displaying the / OFF state, the remaining amount of the battery 30, and the like.

As shown in FIG. 5B, the central control circuit 42 includes a CPU 42a, a ROM 42c and a RAM 4.
It has 2d. The CPU 42a inputs signals from various machines connected to the central control circuit 42 in accordance with the control method (program) recorded in the ROM 42c, calculates data, and outputs the data to various devices connected to the central control circuit 42. Is output to control the equipment. RO
The M42c is provided with a liquid agent dropping control means 42b as a program. The liquid agent dropping control means 42b calculates the rotational speed of the drive motor 4 as will be described later based on the detection signal from the photosensor 8 of the protruding portion 6a of the rotational signal plate 6, and drops the liquid agent onto the waste rotating plate 22. Select the timing of the liquid agent.

The RAM 42d is provided with a wax dropping time storage unit 42e, a cleaning liquid dropping time storage unit 42f, and the like. As shown in FIGS. 11A and 11B, a drop time table in which the drive time of the roll pump 25 is associated with each rotation speed of the drive motor 4 is stored in each of the drop time storage units 42e and 42f. Has been done. The liquid agent dropping control means 42b in FIG. 5 intermittently drives the roll pump 25 according to the values in the dropping time table, as described later.

The battery power supply 30 supplies predetermined power to the central control circuit 42 via the regulator circuit 41, and also supplies power to the drive motor control circuit 43 and the pump motor control circuit 44.

How to use this device: Next, how to use this device will be described with reference to the flowcharts of FIGS. 6 and 7. FIG. 6 is a main routine of a flowchart of the microcomputer used in the present invention, and FIG. 7 is an interrupt routine to the main routine. The operator operates the operation box 32 in advance to set the rotational speed of the waste 20 and the liquid agent (wax, cleaning liquid or dry (wiping)), and specify the operation mode (manual dropping operation, automatic dropping operation or OFF). To do.

When the power switch 36 provided on the upper surface of the case 1 in the operation setting circuit 46 is turned on, the microcomputer program starts. First, the microcomputer initial setting such as the setting of the input / output port and the bit rate of the microcomputer (step S0) is performed. Next, in step S1, the waste 20 starts rotating at a speed according to the rotation speed of the drive motor 4 set in the operation box 32 in step S1.

Next, the designated liquid agent set by the operation setting circuit 46 is read (step S2). Here, three types of examples of dry (dry wiping), wax, and cleaning liquid are shown. In the step S2, the operation box 32
When dry is selected for, the liquid agent is not dropped, so that the signal from the sensor circuit 45 is unnecessary,
The sensor interrupt is disabled (step S3), and the pump 25
Pump is turned off (step S4)
Then, the process returns to the routine for reading the designated liquid agent (step S2).

If wax is selected in step S2, the CPU 42a executes the process shown in FIG.
The wax dropping time table shown in (a) is read from the wax dropping time storage section 42e (step S).
5). After the reading, the process proceeds to step S6. The wax dropping time table is based on the standard working time by the worker, and the wax coating thickness on the floor surface is about 20 to 25 μm.
The ON time of the pump 25 is calculated in accordance with the discharge capacity of the liquid agent dropping pump 25 and the rotation speed of the drive motor 4 so that m becomes m.

When the cleaning liquid is selected in step S2, the CPU 42a reads the cleaning liquid dropping time table from the cleaning liquid dropping time storage section 42f (step S12). After the reading, the process proceeds to step S6. In addition, the cleaning liquid drop time table is based on the standard working time by the operator, so that the cleaning liquid application thickness on the floor surface is about 5 to 10 μm, the discharge capability of the liquid agent dropping pump 25, and the rotation speed of the drive motor 4. The ON time of the pump 25 is calculated according to the above.

In step S6, the operation mode set in the operation box 32 is read. In step S6, the process is branched based on the operation mode designated by the operation box 32, and the process proceeds to each step described later. As the operation mode, the liquid dropping pump 2 after the work is completed
5 or a manual dropping operation mode for operating and setting when releasing the liquid agent remaining in the tube (not shown), or when cleaning the liquid agent dropping pump 25 or the inside of the tube (not shown),
There are an automatic drip operation mode for automatically performing a wiping operation while the waste 20 is kept appropriately moist, and an OFF mode for temporarily stopping the liquid agent drip operation to adjust the wetness of the waste 20. Three types of selections are possible.

If the OFF mode is selected in step S6, the sensor interrupt is disabled (step S3), the pump is turned OFF (step S4), and the routine returns to the routine for reading the designated liquid agent (step S2).

When the manual dropping operation mode is selected in step S6, the pump is turned on to drop the liquid agent (step S7), and the routine returns to the routine for reading the designated liquid agent (step S2). .

In the step S6, when the automatic drip operation mode is selected, the interruption of the sensor is enabled (step S8) so that the operation start signal of the liquid material dropping pump 25 from the sensor circuit 45 can be taken in.
I do.

When the interrupt is permitted in step S8,
The interrupt routine shown in FIG. 7 starts. When the interruption starts, the CPU 42a causes the photo sensor 8
The rotation speed of the rotation signal plate 6 based on the detection signal from
That is, the rotation speed of the drive motor 4 is calculated (step S2
1) and proceeds to step S22.

In step S22, the time for turning on the roll pump 25 is set based on the rotation speed. Here, in step S5 of the flowchart of FIG.
When the wax dropping time table is selected, the wax dropping time table (FIG. 11A)
ON time of the pump is set based on (step S22)
To be done. On the other hand, when the cleaning liquid dropping time table (FIG. 11B) is selected in step S12, the pump ON time is set based on the cleaning liquid dropping time table. After the setting, the process returns to step S9 shown in FIG.

In step S9, the pump is turned on to drop the liquid agent, and the process proceeds to step S10. here,
The timing of dropping the liquid agent is based on the detection signal from the photo sensor 8 and is determined by the through hole 1 of the mounting plates 17 and 19.
It is controlled so as to drop onto 7a and 19a. In step S10, the drive time of the pump is counted from the start of pump ON, and when the pump ON time has elapsed, the pump is turned OFF (step S11) and the process returns to step S2.

The wax and cleaning liquid dripping time table is set based on the standard working time per unit area by the worker, but some workers have short working time and others have long working time. There is also. In some cases, it may be necessary to shorten the working time.
As a countermeasure, in addition to the both dropping time tables, the operator may be allowed to select and set a dropping time table corresponding to a slow working time or a dropping time table corresponding to an early working time.

Further, an acceleration sensor is built in the main body case 1, and the moving speed of the main body is calculated from the magnitude of acceleration,
Rather than the operator selecting whether to work at the tempo of standard working time, working at the tempo of slow eye working time, or working at the tempo of early working time Alternatively, the tempo of the working time may be automatically determined and the optimum dropping time table may be automatically selected.

Further, the acceleration sensor automatically determines whether the tempo of the actual work time is faster or slower than the tempo of the standard work time, and when it is fast, a warning is displayed so that the tempo of the work may be slower. It is also possible to reduce the variation in the working time by the operator by displaying a warning that the work should be done at a slightly faster tempo if it is slow.

Principle of preventing movement during work: FIGS. 8, 9 and 10 are plan sectional views for explaining how the frictional force of the floor surface acts on the wheels. There are three sets of the first waste attaching plate 17 and the second waste attaching plate 19, and the wheels 14 are arranged between them. The three wheels are
It is formed of a material such as polyacetal having a small coefficient of friction with the floor surface, and further, the vertical cross-sectional shape of the wheel 14 contacting the floor surface is such that the wheel and the floor surface are close to point contact. It is formed in an arc or elliptical shape.

FIG. 8 shows a case where the rotation axes of the three wheels 14 are adjusted so that they all intersect at the rotation center O of the output shaft 5 of the drive motor 4. These three wheels 14
Rotates clockwise about the rotation axis O of the output shaft 5.
That is, the wheels 14 are attached to the rotating body 50 at an equal angular pitch, and the extension lines L of the axles of the wheels 14 intersect the vertical axis 5 of the drive motor 4. Are arranged. The three wheels 14 are
With the rotation axis O as the center of rotation, the wheels roll without sliding on the floor surface.

FIG. 9A shows a case where the extension lines La of the rotation axes of the three wheels 14 deviate from the center of rotation O and the three wheels 14 are mounted outward with respect to the traveling direction C. Is shown. Each wheel 14 rolls while sliding sideways. The center of gravity of the load coincides with the center of rotation O,
If the frictional forces received from the floor surface are f1, f2, and f3, the total load on the wheels is W, and the dynamic friction coefficient between the floor surface and the wheels 14 is μ, then f1 = f2 = f3 = μW / 3. On the other hand, as shown in FIG.
The relationship of = f2 + f3 is also established. If the center of gravity of the load applied to the wheels 14 is not at the center of rotation O but at the position Oa from the right, as shown in FIG.
The frictional force received from the floor surface is f1a (<f1), f2a
(> F2) and f3a (> f3), and the relationship of f1a <f2a + f3a holds as a vector. as a result,
A force of F (= f2a + f3a-f1a) is generated in the right direction, and naturally tries to move in the right direction without giving any operating force during wiping. The same analysis was performed by changing the position of the center of gravity of the load applied to the wheel 14, and it was found that a force was generated to move in a direction deviated from the rotation center O.

FIG. 10A shows a case where the extension lines Lb of the rotation shafts of the three wheels 14 deviate from the rotation shaft O and the three wheels 14 are mounted so as to face inward with respect to the traveling direction C. Is shown. Each wheel 14 rolls while sliding sideways. The center of gravity of the load coincides with the center of rotation O,
If the frictional forces received from the floor surface are f1, f2, and f3, the load on the wheels is W, and the dynamic friction coefficient between the floor surface and the wheels 14 is μ, then f1 = f2 = f3 = μW / 3. On the other hand, as shown in FIG.
The relationship of = f2 + f3 is also established. If the center of gravity of the load applied to the wheels 14 is not at the center of rotation O but at the position Ob from the right, the frictional force received from the floor surface of each wheel 14 is f1b, as shown in FIG. (<F1), f
2b (> f2) and f3b (> f3), and the relationship of f1b <f2b + f3b holds as a vector. As a result, a force of F (= f2b + f3b-f1b) is generated in the left direction, and naturally tries to move in the left direction during wiping. Wheel 14
When the same analysis was performed by changing the position of the center of gravity of the load applied to, it was found that a force was generated to move in the direction opposite to the direction deviated from the rotation center O.

Therefore, if the extension lines L of the axles of the three wheels 14 are adjusted so that they all intersect at the rotation center O of the output shaft 5, the frictional force in the sideslip direction becomes f1 + f2 + f3 = 0, and the influence of the frictional force is Disappear. As a result, even if the center of gravity of the load applied to the wheel 14 does not coincide with the rotation center O, the rotation can be continued without moving during the wiping. Therefore, unless the operator pushes or pulls, the rotation continues on the spot. That is, it is possible to prevent the operator from moving forward, backward, leftward and rightward against the will of the operator. Further, the operator can move it forward by pushing the handle 26, and can move it backward by pulling the handle 26.

Second Embodiment: FIGS. 12 to 14 show a second embodiment.
The morphology is shown. As shown in FIG. 12, at the bottom of the device,
Provided with a caster 14a that allows the direction of the axle to change freely
Has been. As shown in FIG. 13, the flexible caster 1
4 a is provided at the end of the three-pronged rotary plate 11. 14
As shown in FIG.
It has a rotating surface 14f for changing. The times
The normal L1 perpendicular to the rolling surface 14f is
A predetermined angle θ ° in the traveling direction C of the caster 14a.
It is set to a tilted posture.

As shown in FIG. 13, this device is operated to move.
The control rod 26 for rotating the swivel caster 14a
Above the region inside the locus, for example, near the motor 4.
It is attached by the side. As shown in FIG.
On the upper part of the work stick 26, the auxiliary operation stick 26b projects left and right.
Is provided. Other configurations are the same as those in the first embodiment.
The same parts or corresponding parts are given the same reference numerals.
Therefore, detailed description and illustration thereof will be omitted.

The flexible casters 14a are shown in FIG.
Direction C, that is, the direction of rotation of the trifurcated rotary plate 11
It is set to an inclined posture. Therefore, before
It has a rotation restriction force in a direction other than the traveling direction C.
Therefore, do not push or pull the operating rod 26.
At times, the direction of the axle of the free caster 14a may become stable.
Therefore, stable rotation can be continued on the spot. one
By pushing or pulling the operating rod 26,
The rotation of the flexible caster 14a is greater than
When force is applied, the direction of the axle of the universal caster 14a is easy
Rotate to. Therefore, the movement operation during wiping can be performed with a small force.
It can be carried out.

On the uneven floor surface, as shown in FIG.
When the three free casters 14a rotate, the main body case 1
A swelling vertical vibration is generated. Its vertical vibration
Is the smallest center of rotation of the three free casters 14a.
The larger the distance from the center of turning, the larger. Therefore, on
The position where the lower vibration is small, that is, the free caster 14a rotates
Above the region inside the turning trajectory, the base of the operating rod 26 is
The end is attached. This allows for uneven floors
Even if it is left, an uncomfortable vibration is transmitted to the operator from the operation rod 26.
Can be alleviated. Further, the operation rod 26
The base end is rotatably connected to the body case 1 using a hinge.
And the slide tube 6 around the hinge.
0 is provided. Bring the operating rod 26 closer to the vertical position
And the slide tube 60 falls under its own weight, and the hinge joint portion
And the operating rod 26 is locked vertically.
It On the other hand, by lifting the slide tube 60 upward,
Therefore, the lock of the operation rod 26 can be released.
Further, project the auxiliary operation rod 26b of FIG. 12 to the left and right.
Since it is provided, the handle portion 26a and the auxiliary operation rod 26 are provided.
This device can be easily moved to the left and right by grasping and.
Can be made. In addition, the frictional force received from the floor surface F and the product
How to rotate the operating rod 26 by the operator's lateral operating force
Rotation moment and turning of the operating rod 26 by the operator
Install the auxiliary operation rod 26b at the position where the amount is optimum.
It is preferable to attach it.

A tilt switch is provided on the operating rod 26.
The angle of the operating rod 26 with respect to the floor surface F is less than a predetermined angle.
When it goes up (for example, at an angle close to 90 °),
You may make it stop. Also, as shown in FIG.
A bracket with waste cloth attachment plates 17 and 19
A biaxial hinge 23A is provided between the hood 18 and the waste rotary plate 22.
Attach the waste cloth to the waste rotary board 22
It is preferable that 17 and 19 are parallel. Well
Also, instead of the biaxial hinge 23A, a parallel movement mechanism is used.
You may use. Furthermore, in the above embodiment, the wheels
Caster) 14 and 14 a
Although provided, the wheels (free casters) 14 and 14a are
Installed on the rotary plate 22, omitting the three-pronged rotary plate 11
Good.

Further, such as the wheels 14 and the free casters 14a.
Use ball casters with balls instead of which wheels
You can also Also, the flexible casters 14a and wheels
You can mix two or more kinds of 14 or ball casters.
Yes. For example, as shown in the plan view of FIG.
Wheels 14 may be provided between the existing casters 14a.
As shown in Fig. 16 (b), the space between the free casters 14a
The roll caster 14b may be provided.

As described above, the preferred embodiments have been described with reference to the drawings, but those skilled in the art can easily envision various changes and modifications within the obvious scope by viewing the present specification. Let's do it. For example, the wheels do not necessarily have to be provided between the swirling directions of the wiping unit, and may be provided inside the wiping unit, that is, near the rotation axis. Since the wheel is located inside the rotating wiping unit, the turning mark of the wheel can be wiped by the wiping unit. Accordingly, such changes and modifications are intended to be within the scope of the invention as defined by the appended claims.

[0061]

As described above, according to the present invention, the self-weight of the device during wiping, in which the wiping unit rotates, is supported by three or more wheels, so that between the floor surface and the wiping unit. The resulting frictional force is significantly reduced. Therefore, the wiping can be performed with a small driving force, and the operation of the operator during the wiping becomes easy. Further, since the load applied during the cleaning is made uniform, the floor surface can be cleaned uniformly and evenly.
In addition, since the wiping unit is removable, hygiene management becomes easy.

Further, if the wiping portion is biased toward the floor surface by the spring member, the uniformity of the load is further improved and becomes more effective.

If the wiping unit swivels on the locus of the wheels to wipe the floor, it is possible to prevent the marks of the wheels from remaining on the floor surface.

On the other hand, according to the fifth aspect of the invention, during the wiping operation, the wiping work is facilitated because the device does not move to the left and right and back and forth against the intention of the operator.

By installing a battery,
It is also easy to clean a narrow place or an invaded place.

According to the seventh aspect of the invention, the liquid agent can be prevented from scattering by intermittently driving the pump for dropping the liquid agent.

Further, if the supply amount of the liquid agent is controlled to increase or decrease according to the magnitude of the rotation speed of the motor, it becomes easy to control the application amount of the liquid agent to a predetermined amount.

In addition, a universal caster should be used as the wheel.
With, the device can be moved back and forth with a small force during wiping
It is possible to tilt the rotating surface of the caster.
The stable caster axle direction is stable by installing
However, the wheels of the flexible casters can easily rotate along a constant circumference.
Therefore, stability during operation is maintained.

In addition, in the region inside the locus along which the wheel turns,
By attaching the base end of the operating rod to the upper side,
Even on the floor surface, the vibrations from the wheels are transmitted to the operating rod.
Can be relaxed.

[Brief description of drawings]

FIG. 1 is a perspective view of an electric wiping device according to a first embodiment of the present invention.

FIG. 2 is a see-through perspective view showing a main part of the apparatus.

FIG. 3 is an exploded perspective view of a main part of the device.

FIG. 4 is a schematic side view showing a main part of the apparatus.

FIG. 5 is a configuration diagram showing control of the device.

FIG. 6 is a flowchart showing an operating method.

FIG. 7 is a flowchart showing an interrupt routine.

FIG. 8 is a plan view showing a wheel and a cleaning unit.

FIG. 9 is a plan view showing a wheel and a cleaning unit.

FIG. 10 is a plan view showing wheels and a cleaning unit.

FIG. 11 is a chart showing contents stored in a storage unit.

FIG. 12 is an electric wiping device according to a second embodiment of the present invention.
FIG.

FIG. 13 is a perspective view showing a main part of the apparatus in a see-through manner.

FIG. 14 is a side view showing a universal caster.

FIG. 15 is a partial side view showing another embodiment.

FIG. 16 is a plan view showing the arrangement of wheels according to another embodiment.
It is a figure.

[Explanation of symbols]

4: Drive motor 11c: Notch portion 14: Wheel 14a: Flexible caster 17: First waste attachment plate 17a, 19a: Through hole 19: Second waste attachment plate 20: Waste (cleaning portion) 22: Waste rotation plate 23a : Spring member 25: Roll pump 26: Operating rod 30: Battery (battery) 37: Tank 42b: Liquid dropping control means 50: Rotating body F: Floor L1: Normal line L2: Vertical line

   ─────────────────────────────────────────────────── ─── Continued front page    (72) Inventor Takahiro Yamamoto             88, Nishinokyo-Minami-Ryomachi, Nakagyo-ku, Kyoto             Tominaga Factory (72) Inventor Miko Kawada             88, Nishinokyo-Minami-Ryomachi, Nakagyo-ku, Kyoto             Tominaga Factory

Claims (13)

[Claims] 1. An electric wiping device for wiping a floor surface, comprising: a rotating body that rotates around a vertical axis by a drive motor; and a load attached to the rotating body to support the load of the electric wiping device. Three or more wheels that allow rotation of the rotating body by turning on the floor surface as the rotating body rotates, and detachably attached to the rotating body to contact the floor surface and An electric wiping device having a wiping unit for wiping. 2. The electric wiping device according to claim 1, further comprising a spring member that presses the wiping portion against a floor surface. 3. The electric wiping device according to claim 1, wherein the wiping unit is provided between the turning directions of the wheels so as to wipe the turning marks of the wheels on the floor surface. 4. The electric wiping device according to claim 2, wherein the number of the wiping units is equal to the number of the wheels in the turning direction of the wheels. 5. The wheel according to claim 1, wherein the wheels are attached to the rotating body at an equal angular pitch, and the wheels are arranged such that extension lines of axles of the wheels intersect the vertical axis. Electric cleaning device. 6. The electric wiping device according to claim 1, further comprising a rechargeable battery for supplying electric power to the drive motor. 7. The tank according to claim 1, further comprising: a tank for storing the liquid agent, and a pump for sucking the liquid agent in the tank and dropping the liquid agent into the wiping unit. An electric wiping device provided with a cutout portion and equipped with liquid agent dropping control means for intermittently driving the pump in order to drop the liquid agent into the wiping portion by passing through the cutout portion. 8. The rotating body according to claim 7, wherein the rotating body includes a rotating plate for attaching the wheels, and an attaching plate for attaching the wiping part, wherein the attaching plate is provided with a through hole and is dropped. An electric wiping device in which the liquid agent is further dropped from the cutout portion of the rotating plate through the through hole of the mounting plate and then dropped onto the wiping unit. 9. The electric wiping device according to claim 8, wherein the central portion of the mounting plate is foldable so that the wiping portion can be attached to and detached from the mounting plate. 10. The electric wiping device according to claim 1, wherein the rotation speed of the motor is variable, and the supply amount of the liquid agent supplied to the wiping unit can be controlled in accordance with the rotation speed of the motor. 11. The rotation speed of the motor is variable, the drive time of the pump is controlled according to the rotation speed of the motor, and the supply amount of the liquid agent to be supplied to the wiping unit is controlled according to claim 7. An electric wiping device that can be controlled according to the rotation speed of the motor. 12. The method according to claim 1, At least two or more of the wheels are on the axle.
It consists of flexible casters whose direction can change freely, To change the direction of the axle on the swivel caster
The normal line perpendicular to the rotating surface of the
Is set in a tilted posture in which the
Dynamic cleaning device. 13. The method according to claim 1, Further equipped with an operating stick for moving the electric wiping device
e, Above the region inside the trajectory of the wheels, the maneuver
An electric wiping device to which the base end of the work stick is attached.