JP2000051128A - Floor polishing cleaner - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a floor polishing cleaner which can polish a floor surface evenly by operating a drive motor with constantly stable electric current and producing stable sucking force between a pad or brush of the cleaner and the floor surface. SOLUTION: The whole of pad or brush 22 of this cleaner is pressed against or separated from a floor surface by using an extensible cylinder 32. The value of electric current of a drive motor 22M to rotate the pad or brush 22 is read out. And when the read-out value of electric current is different from a standard value, the pressing force of the pad or brush 22 on the floor surface is adjusted by operating the extensible cylinder 32, so that the value of electric current of the drive motor 22M will be adjusted to the standard value.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a floor polishing machine for polishing or cleaning a floor surface by rotating a pad or a brush at a high speed by a motor while running the machine body. Specifically, specifically, the function of uniformly maintaining the pressing force of the pad or the brush against the floor surface, the function of preventing the dust from leaking from the dust-proof cover, and the easy mounting and checking of the pad or the brush can be performed. The present invention relates to a floor polisher having a function and other safety functions.

[0002]

2. Description of the Related Art Prior art relating to a floor polisher according to the present invention includes Japanese Patent Application Laid-Open No. Hei 7-236604, Japanese Utility Model Registration No. 2545838, and Japanese Patent Application Laid-Open No. Hei 7-1945.
No. 09-09, JP-A-9-09.
There is a waxed floor polishing and grinding apparatus described in JP-A-200406.

The above-mentioned first publication (Japanese Patent Laid-Open No. 7-2366)
No. 04), the floor polisher with a pad pressing force adjusting function rotates the pad at a high speed to make the inside of the pad into a negative pressure state and generate an adsorbing force on the floor. The pad is pressed against the floor against an upward spring force supporting the pad to generate a pad pressure on the floor.

[0004] In the pad suspension apparatus in the floor polisher described in the second publication (U.S. Patent Publication No. 2545838), when the pad is worn, the screw is turned at an appropriate time. It is configured to adjust the contact pressure of the pad to the floor surface, and has a dust surface leakage prevention function described in the third publication (Japanese Patent Laid-Open No. 7-194509). The dispenser is equipped with a soft rubber seal skirt under the pad cover so that pad debris and dust generated by the polishing rotation of the pad do not leak out of the pad cover due to the high-speed rotation of the pad. Have been.

Further, the above-mentioned fourth publication (Japanese Patent Laid-Open No. 9-24
The waxing floor polishing and grinding apparatus described in 006) is configured so that the pad can be easily replaced by moving the entire pad to an oblique angle, and a mechanism for adjusting the pad pressure is combined. It is configured to have.

[0006]

However, the floor polisher described in the above-mentioned first publication has a problem in that the pad is worn and the distance between the pad and the floor is widened and the suction force is reduced. In addition, since the rotational force of the pad is increased to adjust the suction force generated between the pad and the floor surface, as a result,
There is a problem that the power consumption of the drive motor is increased, the mounted battery is greatly consumed, and the time that can be operated by one charge is reduced.

Further, the suspension device described in the above-mentioned second publication has a problem that the operation becomes very complicated because the contact pressure of the pad to the floor surface is manually turned by turning the screw. Further, in the floor polisher described in the third publication, a seal skirt made of soft rubber adheres to the floor surface during operation to prevent dust from leaking. When the rotation of the pad is stopped and the rotation of the pad is slowed down, the suction force of the pad to the floor surface decreases, and the pad separates from the floor surface, and at the same time, the pad cover also rises and separates from the floor surface. Since rotation continues by inertia, there is a problem that debris and dust inside the pad are scattered around by the inertial rotation of the pad.

Further, the waxing floor polishing and grinding apparatus described in the fourth publication uses a number of motors and telescopic cylinders to move the pad to an oblique angle and to adjust the pad pressure. Need to do
There is a problem that the structure is very complicated and the price is high. In addition, since the pressure adjustment of the pad is performed by manually operating the adjustment lever, the adjustment becomes uncertain.

SUMMARY OF THE INVENTION The present invention is to provide a floor polisher that solves the above-mentioned problems, and a technical problem of the present invention is to always operate a driving motor with a stable electric current to produce a pad or brush. And generate a stable suction force between the floor and
The goal is to enable even polishing of the floor.

Another technical problem of the present invention is that when a pad is worn, it is automatically detected and the position of the pad or brush is automatically adjusted so as to be in an appropriate state. In stopping, the dust in the dust cover is not scattered around due to the inertial rotation of the pad or the brush, and the pad or the brush is quickly moved to the pad replacement position by a relatively simple structure, and the pad or the brush is removed. An object of the present invention is to make it possible to easily perform replacement, and to proceed safely without damaging or damaging a pad or a brush or a floor surface during operation.

[0011]

Means taken by the present invention to solve the above-mentioned technical problems are as follows.

A polisher for cleaning a floor surface, wherein a pad or a brush attached to a dustproof cover is rotated at a high speed by a motor while the body is running to polish or clean the floor surface.

(1) Reading means for reading the current value of a drive motor for rotating the pad or brush, wherein the entire pad or brush is configured to be pressed against and separated from the floor surface by using a telescopic cylinder. Current value comparing means for comparing the read current value with a preset reference current value, and operating the telescopic cylinder so that the current value of the drive motor becomes the set reference current value. Pressing adjustment means for adjusting the pressing force of the pad or the brush on the floor surface is provided. (Claim 1)

(2) A pad or a brush is attached to a tip of a lift lever having a root end serving as a fulcrum pivoted to the body side, and a telescopic cylinder is connected to an intermediate portion of the lift lever via an elastic body. The pad or the brush is configured to be pressed against and separated from the floor surface by a telescopic operation of a telescopic cylinder. (Claim 2)

(3) By operating the operation switch,
An exchange position where the entire pad or brush is separated from the floor to the uppermost limit by controlling the expansion and contraction operation of the expansion / contraction cylinder, a standby position that is slightly separated from the floor horizontally, and an operation position that pushes against the floor. Position control means that can be switched to the position of the brush, and on the fuselage side, the extension of the rear end of the pad or brush, which is raised toward the uppermost replacement position by the telescopic cylinder, is restricted on the way. Then, a stopper portion for stopping the pad or the brush in a state in which the entire pad or the brush is directed obliquely downward with respect to the floor surface is provided. (Claim 3)

(4) The entire pad or brush is configured to be pressed against and separated from the floor surface by using a telescopic cylinder, and the rotation of the pad or brush is started when the dustproof cover is attached to the floor surface. Rotation start control means to be performed after contact, brake means for forcibly stopping the rotation of the pad or brush, and after the rotation is completely stopped by this brake means, control the telescopic cylinder to control the pad or brush. Providing a lift control means for raising the floor to the standby position. (Claim 4)

(5) The current value of the drive motor that rotates the pad or the brush is read, and the read current value is compared with a preset current value. If it falls below, the rotation of the drive motor is stopped, and the telescopic cylinder is controlled to control the entire pad cover and pad or brush, or if there is no pad or brush, only the dust-proof cover on the floor Provide emergency control means to raise to the position. (Claim 5)

(6) An emergency obstacle avoiding means capable of forcibly and temporarily raising the entire pad or brush to the standby position while the body is running is provided.
(Claim 6)

According to the means according to claim 1 described in the above (1), when the pad or the brush is worn by use or when the floor has irregularities, the pressure of the pad or the brush against the floor is used. Is detected by detecting the current value of the drive motor, and by controlling and operating the telescopic cylinder in accordance with the change in the current value, the changed pressing force of the pad or the brush is automatically adjusted, and the pad or the The brush is always pressed against the floor surface with a constant pressing force, so that the same polishing or cleaning effect can always be exerted.

According to the means according to the second aspect described in the above (2), the pressing force of the pad or the brush on the floor can be adjusted according to the control operation of the telescopic cylinder, and the pad or the brush is attracted to the floor. Due to the balance between the force and the elastic body, the pad or brush is always in contact with the floor surface at a constant pressure, and the elastic body absorbs instantaneous pressure changes caused by irregularities on the floor surface Therefore, the polishing operation using a pad or a brush can be performed extremely smoothly.

According to the means according to claim 3 described in the above (3), the pad or the brush is set at the standby position slightly horizontally separated from the floor surface before work, when the work is stopped, when safety is ensured, and the like. At the start of work, the pad or brush can be lowered to the operating position where the floor is pressed to perform polishing or brushing of the floor, and when replacing or repairing the pad or brush, the pad or brush can be held. Is raised to the replacement position and is inclined, so that replacement work and other repair work can be easily performed.

According to the means according to the fourth aspect described in the above (4), the rotation of the pad or the brush is started after the dust cover comes into contact with the floor surface.
The pad or brush rotated at high speed by the drive motor does not blow dust around the dustproof cover,
Further, when the operation is stopped, the pad or brush does not rise to the standby position unless the brake means completely stops the rotation of the pad or brush. This makes it possible to stay inside the dustproof cover without being scattered around.

According to the means according to claim 5 described in the above (5), even when forgetting to attach the pad or the brush and starting the operation, the load applied to the drive motor is reduced and the current value is reduced. When it is determined that no pad or brush is attached after a certain value, the rotation of the drive motor is stopped and the dust cover is immediately raised. Enable to prevent accidents.

According to the means according to claim 6 described in the above (6), the pad or the brush can be temporarily raised from the floor in an emergency, so that, for example, an outlet, a stone, etc. When a foreign object is found, the pad or the brush is immediately lifted to prevent the pad or the brush from being damaged by the foreign object or to prevent the floor from being damaged.

As described above, the above (1) to (1)
By solving the above technical problem by means of (6),
The problem of the conventional technique can be solved.

[0026]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a side view for explaining an external appearance of the present invention. FIG. Is a body of a floor polishing cleaner, 2 and 3 are wheels for traveling, 2M is a traveling motor, 1X is a battery which is a power source mounted in the body 1, and 21 is a front of the body 1 by a lift lever 27. A motor base mounted movably up and down, a mounting shaft 27B, a drive motor 22M mounted on the upper surface of the motor base 21, a dust cover generally indicated by reference numeral 20,
Reference numeral 24 denotes a seal skirt attached to the lower side of the dustproof cover 20. Inside the dustproof cover 20, FIGS.
As shown in FIG. 7, a pad or brush 22 rotated at a high speed by the drive motor 22M is attached.

In the present invention, when a pad is mounted inside the dustproof cover 20, the body 1 becomes a floor polishing machine, and when a brush is mounted, a floor cleaning machine for brushing the floor. The following explanation is for pad 2
2 will be carried out on a floor polisher equipped with the same.

Reference numeral 20B denotes a dust hose for sending dust generated on the dust-proof cover 20 by the high-speed rotation of the pad 22 to a dust box 20X mounted on the body 1, 4 denotes an operation handle mounted on the rear upper side of the body 1, and 5 denotes this handle. 4 is an operation box attached to the operation box 4, and the operation box 5 is configured as shown in FIGS.

FIG. 2 is a rear view of the operation box 5, and FIGS. 3 and 4 are a plan view and a side view, respectively. In these drawings, 6 is a handle switch for a power supply, and 10 is a handle switch of the operation box 5. Reverse switches 11 and 12 are provided on both sides of the rear surface, and switches for setting pad pressure and speed are also provided on both sides of the rear surface of the operation box 5. These setting switches 11 and 12 are usually When the upper end portion 11A of the pad pressure setting switch 11 is pressed while being held at the neutral position, the rotation speed of the drive motor 22M for the pad 22 is increased to increase the pad pressure (brush pressure), and conversely, the lower end portion 11B When the button is pressed, the number of rotations of the drive motor 22M is reduced, and the pad pressure (brush pressure) is reduced.

The upper end 12 of the speed setting switch 12
A and the lower end 12B are pushed, and the above-described traveling motor 2M
The running speed of the body 1 can be adjusted by speeding up or slowing down the rotation of the body 1. Further, on the upper surface of the operation box 5, a lamp 5A for power supply, a power meter 5B, Speed lamps 7A, 7B, 7C,
Pad pressure lamps 8A, 8B and 8C, a pad rotation switch 13 for turning on / off the rotation of the pad 22 and its display lamp 9A, and a pad exchange switch 14 for turning on / off the pad exchange and its display lamp 9B are provided. When the pad exchange switch 14 is turned on, the pad 22 and the dustproof cover 20 are moved up to the pad exchange position shown in FIG. 7 so that the pad 22 can be easily exchanged.

Further, on both sides of the operation box 5, an emergency stop button 15 for instantly stopping the running of the body 1 and the rotation of the pad 22 in an emergency, and a foreign object such as an outlet or a stone on the floor during operation. When found, the pad 22 and the dust cover 20
Is instantly lifted to the standby position shown in FIG.
An obstacle avoiding button 16 (emergency obstacle avoiding means) for preventing foreign matter from being caught is provided. When the hand is released from the obstacle avoiding button 16, the pad 22 and the dustproof cover 20 that have been raised to the standby position are re-emitted. The system automatically descends to the operation position shown in FIG. 6, that is, the position where the floor is polished.

Next, a mechanism for raising and lowering the pad 22 and the dustproof cover 20 will be described with reference to FIGS. 5 to 7. FIG. 5 shows a standby position, FIG. 6 shows an operation position, and FIG. In these drawings, reference numeral 26 denotes a chassis provided on the body 1, reference numeral 29 denotes a column protruding above the chassis 26, and 29A.
Is an electrical plate protruding from a support 29, and the root end of a lift lever 27 to which the motor base 21 is rotatably mounted using a mounting shaft 27B at the tip is mounted on the chassis using the mounting shaft 27A. 26 is attached to the upper and lower pivotably.

Numerals 30A and 30B denote a spring arm and a cylinder arm which are attached to an intermediate portion of the support column 29 by using an attachment shaft 30 so as to be vertically turned. The tip of the spring arm 30A and the lift Lever 27
Between the middle part of the tube and the spring 31S
The upper and lower ends of an elastic body 31 having a structure containing therein are rotatably mounted on shafts 31A and 31B.
Both ends of the electric telescopic cylinder 32 (specifically, the upper end of the piston rod and the root end of the cylinder main body) are provided between the front end of the cylinder 0B and the lower mounting plate 26A of the chassis 26.
Are rotatably mounted on shafts 32A and 32B.

The telescopic cylinder 32 normally holds the pad 22 and the dustproof cover 20 in the standby position shown in FIGS. 1 and 5, that is, the pad 22 at a position slightly separated from the floor surface. Turn the pad rotation switch 13
When N, the pad 22 operates in the retracting direction (down direction) before starting to rotate, the lift lever 27 is rotated downward via the elastic body 31, and the pad 22 is moved to the dustproof cover 2.
When the pad 22 is lowered to the operating position shown in FIG. 6 together with 0, that is, the position where the pad 22 is pressed against the floor surface, and the pad exchange switch 14 is turned on, the rotation of the pad 22 is completely stopped. After that, the lift lever 27 is rotated upward through the elastic body 31 in the same manner as in the projecting direction (up direction), and the pad 22 is moved together with the dustproof cover 20 into the pad shown in FIG. It is configured to rise to the exchange position.

When the pad 22 is raised to the replacement position shown in FIG. 7 by the telescopic cylinder 32, the stopper 26T provided on the chassis 26 comes into contact with the upper surface of the rising dust-proof cover 20 on the rear end side. 7, the pad 22 is stopped together with the dustproof cover 20 in a state where the pad 22 is tilted downward and rotated with respect to the floor surface as shown in FIG. 7, so that the pad holding bolt 22B is removed to remove the pad 22. The pad 22C can be easily removed together with the pad base 22C from the motor shaft 22A side for easy replacement. When the pad 22 rises and reaches the replacement position, the limit switch attached to the electrical component plate 29A as shown in FIG. When 33 is turned on, all the operating mechanisms, that is, the operation of the telescopic cylinder 32 and the motors 2M and 22M are stopped.

The above-described telescopic cylinder 32 includes:
The current value of the drive motor 22M of the pad 22 is read, and the read current value is compared with a preset reference current value. If the current value is different, the telescopic cylinder is set so that the current value of the drive motor 22M becomes the reference current value. After the rotation of the pad 22 is completely stopped by the control means for operating the pad 32 and adjusting the pressing force of the pad 22 against the floor surface, that is, the pressing adjusting means and the brake means described below, the pad 22 is shown in FIG. The lifting control means for raising the standby position or the exchange position shown in FIG. 7 is connected.

Further, the drive motor 22 for the pad 22
At M, as described above, the rotation of the pad 22 is started after the dustproof cover 20 completely contacts the floor surface, that is, the home position sensor 28 attached to the chassis 26 as shown in FIG. After being shielded (ON) by the shielding plate 27C attached to the coming lift lever 27, the rotation start control means which starts after a short time (for example, 0.5 seconds) and the pad rotation switch 13 described above are turned OFF. When the rotation of the pad 22 is stopped, the retractable cylinder 32 is retracted to press the pad 22 against the floor surface, and a brake means for forcibly stopping the rotation of the pad 22 is connected.

In addition, the pad drive motor 2
In 2M, when the current value of the drive motor 22M is read and compared with the reference value, if the current value is lower than a preset current value, it is determined that the pad 22 is not mounted, and the rotation of the drive motor 22M is stopped. In addition, emergency control means for operating the telescopic cylinder 32 described above to raise the dustproof cover 20 on which the pad 22 is not mounted to the standby position shown in FIG. 5 or the exchange position shown in FIG. ing.

FIG. 8 illustrates the structure of a seal skirt for preventing dust leakage attached to the lower end of the dustproof cover 20. In FIG. 8, reference numeral 20A denotes a rubber skirt attached to the lower edge of the dustproof cover 20. Bumper, 23 is one end 23A
Is attached to the bumper 20A by the rubber ring 23P,
The intermediate portion 23T is sewn 23H to the inner surface of a nylon skirt 24 provided with a resin coating, then folded back, and the lower end portion 23B of which the upper end is sewn to the skirt 24 is molded into a synthetic resin molding with a core bar 23R. A piece of canvas attached to 25,
Reference numeral 23C denotes an inner cover sewn on the inner surface of the skirt 24, and FIG. 8A shows the pad 2 as shown in FIG.
8 shows a state during operation in which 2 is in contact with the floor surface.
(B) shows a standby state in which the pad 22 is separated from the floor surface as shown in FIG.

FIG. 9 is a block diagram for explaining the electrical configuration of the present invention. In FIG. 9, reference numeral 41 denotes a CPU, 42 and 43 denote ROM and RAM connected to the CPU 41 via a bus 44,
Reference numeral 46 denotes an I / O port which also belongs to the CPU 41 via the bus 45.
The control unit 40 of the floor polishing machine according to the present invention is configured by the M43 and the I / O port 46.

The I / O port 46 is connected to the various switches 6, 10, 11A, 11B, 12
A, 12B, 13, 14, 33, emergency stop button 15 and obstacle avoidance button 16, running motor 2M and speed controller 2S, pad driving motor 22M, current detection sensor 22S, home position sensor 28 and telescopic cylinder 32 Are connected as shown in FIG.
1 to perform each function in accordance with each program stored in the ROM 42 under the supervision of the ROM 42. Further, the ROM 42 stores programs for implementing various means described in the claims. Have been.

Next, the operation of the present invention will be described with reference to FIGS.
This is performed according to the flowchart described in 2.

In the first step S1, a power key switch (not shown) is turned on, and then in step S2, it is determined whether a manual switch (also used as a pad pressure setting switch 11A) is turned on for 3 seconds or more. If the answer is YES, the process proceeds to the manual mode of step S3, that is, the service mode for operating each operation individually.
From the N / OFF state, the current position of the pad 22 is confirmed. Then, the process proceeds to step S5, and when the home position sensor 28 is ON, the telescopic cylinder 32 is actuated up until the home position sensor 28 is turned OFF to raise the pad 22. Conversely, when the sensor 28 is off, the pad 22 is lowered until it is turned on, and then raised until it is turned off again.
The pad 22 is set to the standby position shown in FIG.

Next, the process proceeds to step S6, where ON / OFF of the pad exchange switch 14 is determined. If the pad exchange switch 14 is OFF (if not ON), the process directly proceeds to step S7.
If the switch is turned on, the process proceeds to step S8, where the telescopic cylinder 32 pushes up the pad 22 for 6 seconds to operate the pad 22 so that the pad 22 is in the exchange position shown in FIG.

Thereafter, the flow advances to step S9 to determine whether or not the pad exchange switch 14 has been turned ON again.
When turned on (turns on when pad replacement is completed)
In step S10, the telescopic cylinder 32 descends the pad. Then, the procedure proceeds to step S11, where ON / OFF of the home position sensor 28 is determined. If the home position sensor 28 is ON, the procedure proceeds to step S12 to descend the pad 22 for another 3 seconds. After that, it is raised again in step S13,
This raising is performed until the home position sensor 28 is turned off in step S14, that is, until the home position sensor 28 reaches the standby position shown in FIG. 5, and the process proceeds to step S7.

In step S7, the O of the handle switch 6
N / OFF is determined, and if it is OFF (if it is not ON), the process returns to step S6 described above, and the process is repeated.
If N, the process proceeds to step S15 shown in FIG. 11 to determine ON / OFF of the reverse switch 10. If it is ON, the process proceeds to step S16, the traveling motor 2M is reversed, the body 1 is moved backward, and the process proceeds to step S19. Go ahead, OF
In the case of F (if it is not ON), the process proceeds to step S17, where ON / OFF of the speed setting switch 12 is determined. If it is OFF (if it is not ON), the process returns to step S6 shown in FIG. In this case, the process proceeds to step S18, and the traveling motor 2M is rotated forward, whereby the body 1 is advanced at a low speed and the process proceeds to step S19.

In step S19, ON / OFF of the handle switch 6 is determined. If it is OFF (if it is not ON), the process proceeds to step S21 shown in FIG. 10 to stop the traveling of the body 1, and then the pad 22 is rotated. If so, the telescopic cylinder 32 is moved down to operate the dustproof cover 20.
Of the pad 22 (the motor 22M)
Rotation), and then returns to step S4 to repeat the above-described processing.
Proceed to.

In step S20, the reverse switch O
N / OFF is determined, and if it is OFF (if it is not ON), the process proceeds to the next step S23 to determine whether or not the vehicle is moving forward, and if it is moving forward (if YES), the process proceeds to step S27. However, if the vehicle is not moving forward (in the case of NO), the process proceeds to step S28 to stop traveling for one second, and then proceeds to step S29 to start forward at a low speed and step S28.
Proceed to 27.

In step S27, the speed setting switch 12
Is OFF (as before) or the upper end 12A
(Up switch) is turned on, or lower end 1
It is determined whether 2B (down switch) is turned on,
If the switch is OFF, the process proceeds to step S32 shown in FIG. 12, but if the down switch 12B is turned on, the process proceeds to step S30 to reduce the traveling speed. If the up switch 12A is turned on, the process proceeds to step S31. After increasing the traveling speed, the process proceeds to step S32 in FIG. 12, respectively.

If the reverse switch 10 is turned on in step S20 described above, the flow proceeds to step S24 to determine whether the vehicle is moving forward. If the result is NO, the flow proceeds to step S25 to move the body 1 backward. After that, the process proceeds to step S32, but if YES (if the vehicle has been moving forward), the process proceeds to step S26 to stop traveling for one second, and then proceeds to step S25 to start reverse. .

In step S32, it is determined whether or not the pad 22 is rotating. If the pad 22 is rotating, step S3 is performed.
The process proceeds to step S7, but if stopped, the process proceeds to step S33, where ON / OFF of the pad rotation switch 13 is determined. If the switch is ON, the process proceeds to step S34 to allow the telescopic cylinder 32 to move the pad 22 to 1.7. For 2 seconds, the pad 22 is pressed against the floor surface, and the pad 22 starts to rotate for 0.5 second.
After a lapse of seconds, the mounting of the pad 22 is checked, that is, the current value of the drive motor 22M is checked. Then, the mounting check is determined in step S36. If OK, the process proceeds to step S19 shown in FIG. Then, the operation is continued, but in the case of NG, that is, if the current value is lower than the set value, the process proceeds to step S35 to stop the rotation of the drive motor 22M, and then operates the telescopic cylinder 32 to operate the dustproof cover. 20 is returned to the standby position shown in FIG.
The process returns to step S19 shown in FIG.
If No. 2 is not mounted, mounting should be completed during this time.

Further, it is turned off in the above-mentioned step S33.
If it is determined that the pad rotation switch 13 is not turned on, the process proceeds to step S35, and if the pad rotation switch 13 is turned off in step S37 (rotation is stopped).
Also, in step S39, the rotation of the pad 22 is forcibly stopped by lowering the telescopic cylinder 32 and pressing the pad 22 against the floor surface.
It is a mechanism to go to.

On the other hand, if it is determined in step S37 that the pad rotation switch 13 is ON, that is, if it is determined that the pad is rotating, the process proceeds to the next step S38, where ON / OFF of the obstacle avoidance button 16 is determined. When it is turned on, the rotation of the pad 22 is stopped, and then the telescopic cylinder 32 is operated to move to the standby position in FIG.
9, the operation is repeated, but if it is OFF (if it is not ON), the process proceeds to step S40, where the pad 22 is rotated at the set pressure set by the pad pressure setting switch 11 to polish the floor surface, and then In step S41, the current value of the drive motor 22M is read.
By comparing the set value with the read current value in step 2, if necessary, the expansion / contraction cylinder 32 is controlled to operate to adjust the pad pressure to the above-described set pressure, and then returns to step S19 to continue the operation.

The pad pressure set in step S40 is, for example, as follows. 55A Standard → Low rotation mode 2000rpm 65A High → High rotation mode 2150rpm 75A Super high → High rotation mode 2050rpm

The adjustment of the pad pressure performed in step S42 is performed, for example, as follows. 5 amps or more larger than the set value → pad 0.
2 seconds up If the value is 10 amperes or more larger than the set value → pad 0.
5 seconds up If the current value is 5 amperes or less smaller than the set value → pad 0.
1 second down If the current value is smaller than the set value by 10 amperes or more → Pad 0.
2 seconds down

FIG. 13 is a block diagram for explaining the whole of the present invention.

[0057]

As described above, according to the floor polishing machine according to the present invention, the drive motor is always operated with a stable electric current so that a stable operation can be achieved between the pad or the brush and the floor. Since it is possible to generate a smooth suction force, the floor surface can be polished evenly and cleanly, and when the pad or brush is worn, the pressure of the pad or brush is adjusted and the floor is always kept at a constant pressure. A point that allows the surface to be polished, a point that allows the dust accumulated in the dust cover by rotation of the pad or brush to be able to polish the floor surface in a clean state without leaking to the outside, a pad or a brush Of the floor polisher and floor cleaning, in addition to the fact that the replacement of the slab is extremely easy, and that the work can be carried out safely by preventing the entry of foreign substances during operation. As a machine It is those that apply.

[Brief description of the drawings]

FIG. 1 is a side view illustrating the appearance of a floor polishing machine according to the present invention.

FIG. 2 is a rear view of the operation box used in the present invention.

FIG. 3 is a plan view of the operation box.

FIG. 4 is a side view of the operation box.

FIG. 5 is a sectional view of a main part of the present invention in a state where a pad is in a standby position.

FIG. 6 is a sectional view of a main part of the present invention in a state where a pad is in an operation position.

FIG. 7 is a sectional view of a main part of the present invention in a state where a pad is in a replacement position.

FIG. 8 is a cross-sectional view illustrating a structure of a seal skirt attached to a dust-proof cover, in which (a) is a cross-sectional view illustrating a state during operation, and (b) is a cross-sectional view illustrating a state during standby.

FIG. 9 is a block diagram illustrating an electrical configuration of the present invention.

FIG. 10 is a flowchart illustrating the operation of the present invention.

FIG. 11 is a flowchart illustrating a continuation of the flowchart shown in FIG. 10;

FIG. 12 is a flowchart illustrating a continuation of the flowchart shown in FIG. 11;

FIG. 13 is a configuration diagram illustrating the overall configuration of the present invention.

[Description of Signs] 1 Airframe 2 Wheel 2M Running Motor 16 Obstacle Avoidance Button 20 Dustproof Cover 22 Pad or Brush 22M Drive Motor 26T Stopper 27 Lift Lever 31 Elastic Body 32 Telescopic Cylinder

 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Yuji Makishima 1-6-2 Shintoda, Hamamatsu-shi, Shizuoka Amano Co., Ltd. Inside the Tsutoda Techno Works (72) Inventor Tetsuya Sato 1-6, Shintoda, Hamamatsu-shi, Shizuoka 2 Inside Amano Corporation Tsuda Techno Office

Claims (6)

[Claims] 1. A floor polisher / cleaner configured to perform high-speed rotation of a pad or a brush mounted in a dust-proof cover by a motor while running a machine body to polish or clean the floor. Reading means for reading the current value of a drive motor for rotating the pad or the brush, wherein the whole pad or brush is configured to be pressed against and separated from the floor surface by using a telescopic cylinder, and the read current value And current value comparing means for comparing the current value of the drive motor with the preset reference current value, and the pad or the pad for the floor by operating the telescopic cylinder so that the current value of the drive motor becomes the set reference current value. A polisher for cleaning a floor surface, comprising a pressure adjusting means for adjusting a pressing force of a brush. 2. A pad or a brush is attached to a tip of a lift lever having a root end serving as a fulcrum pivotally connected to the body side, and a telescopic cylinder is connected to an intermediate portion of the lift lever via an elastic body to expand and contract. The floor polishing machine according to claim 1, wherein the pad or the brush is configured to be pressed against and separated from the floor by the expansion and contraction operation of the cylinder. 3. An exchange position in which the entire pad or brush is moved to the uppermost position from the floor by controlling the expansion / contraction operation of the telescopic cylinder by a switching operation of the operation switch, and a standby position in which the pad or brush is slightly away from the floor. , 3
In addition to providing position movement control means capable of switching to a different position and moving the pad or brush rearward on the fuselage side toward the uppermost replacement position by the telescopic cylinder, on the way. 2. A stopper portion for regulating and stopping the pad or the brush in a state where the entire pad or the brush is directed obliquely downward with respect to the floor surface.
Or a floor polishing machine according to 2 above. 4. A floor polishing machine for polishing or cleaning a floor by rotating a pad or a brush mounted in a dustproof cover at a high speed by a motor while running the machine body. The entire pad or brush is configured to be pressed against and separated from the floor surface by using a telescopic cylinder, and rotation of the pad or brush is started after the dustproof cover comes into contact with the floor surface. Control means, brake means for forcibly stopping the rotation of the pad or brush,
After the rotation is completely stopped by the brake means, a lift control means for controlling the telescopic cylinder to raise the pad or the brush from the floor surface to the standby position is provided. Machine. 5. A current value of a drive motor for rotating a pad or a brush is read, and the read current value is compared with a preset current value, and the current value of the drive motor falls below a preset current value. In this case, the rotation of the drive motor is stopped, and the telescopic cylinder is controlled to control the pad cover and the entire pad or brush, or, if there is no pad or brush, only the dustproof cover at a predetermined position on the floor surface. 2. An emergency control means for raising the pressure up to
3. The floor polishing cleaner according to 3 or 4. 6. An emergency obstacle avoiding means capable of forcibly and temporarily raising the entire pad or brush to a standby position while the body is running is provided. 2. The floor polishing cleaner according to 2, 3, 4 or 5.