JPH1128180A - Floor surface polisher - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent a pad from being pressed by negative pressure at the time of its rotation by providing a pad holder with vents communicating with the center space part of the pad. SOLUTION: The ring-formed pad 5, which is supported by the pad holder 4 to rotate to polish a floor surface, and a motor 7 rotating the pad 5 through a rotary force transmitting mechanism 6 are assembled to a device body 3 with traveling wheels 1 and an operation handle 2. This mechanism 6 is constituted of a driving pulley 6a, a following pulley 6b and a belt 6c. Then, several vents 10 communicating with the center space part 5a of the pad 5 supported by the holder 4 are arranged at regular intervals on the cylinder wall of a conical cylinder part formed in the center of the holder 4. Thereby, at the time of rotating the pad 5, air is sucked to the part 5a of the pad 5 from outside through the vents 10 to prevent the generation of negative pressure.

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 a floor.

[0002]

2. Description of the Related Art A floor polisher for polishing a floor is provided on a body having traveling wheels and an operation handle. An annular pad formed by solidifying the pad and a motor for rotating the pad are assembled, and by rotating the pad with the motor, the wax-coated floor surface is rubbed and polished with the pad.

[0003] In such a floor polishing machine, to improve the polishing effect of the floor surface, a higher result can be obtained by increasing the number of rotations of the pad. Negative pressure is generated in the central space of the pad by the centrifugal force acting on the air between the pad and the pad is pressed against the floor surface, the frictional force between the pad and the floor surface is increased, and the load on the motor is increased and the rotation of the motor is increased. There is a problem that the number of rotations is reduced, and as a result, the number of rotations cannot be increased.

To solve such a problem, FIG.
And a floor polisher having the structure shown in FIG. 7 have been proposed.

The floor polisher shown in FIG. 6 has an annular body 3 provided with a traveling wheel 1 and an operation handle 2, which is supported by a disk-shaped pad holder 4, and which rotates and polishes the floor. A pad 5 and a motor 7 for rotating the pad 5 via a rotational force transmission mechanism 6 are assembled, and the pad 5 is pressed against the floor 8 by negative pressure during the rotation at the front of the body 3. The structure is provided with casters 9 for preventing. The rotational force transmitting mechanism 6 includes a drive pulley 6a attached to the rotating shaft of the motor 7, a driven pulley 6b attached to the rotating shaft of the pad holder 4, and these pulleys 6a,
6b, and a belt 6c for transmitting rotational force.

In the floor polishing machine shown in FIG. 7, a caster 9 for preventing the pad 5 from being pressed against the floor 8 by a negative pressure during its rotation is provided in the pad holder 4 in the central space 5a of the pad 5. Built in position.

[0007]

However, in the floor polisher having the structure shown in FIGS. 6 and 7, since the casters 9 must be assembled, the cost is increased, and the movement of the casters 9 is mechanical. When it becomes dull due to fatigue or the like, there is a problem that the floor surface 8 may be damaged.

An object of the present invention is to provide a floor polisher having a structure capable of preventing a pad from being pressed against a floor surface by a negative pressure when the pad is rotated without assembling casters.

It is another object of the present invention to provide a floor polisher having a structure capable of easily introducing air into a central space of a pad.

[0010]

According to the present invention, there is provided an airframe provided with a running wheel and an operation handle, a pad supported by a pad holder and rotated to polish a floor surface, and a pad for rotating the pad. An object of the present invention is to improve a floor polishing machine having a structure in which a motor is assembled.

[0011] The invention described in claim 1 is characterized in that a vent hole communicating with the central space of the pad is provided in the pad holder.

When the vent hole communicating with the central space of the pad is provided in the pad holder as described above, the central space of the pad has a negative pressure due to the centrifugal force acting on the air between the pad and the floor when the pad rotates. In accordance with the situation, air flows into the central space of the pad from outside through the ventilation holes in such a manner as to be sucked, and when the pad rotates, the negative pressure generated in the central space of the pad by centrifugal force is reduced or the negative pressure is reduced. The generation of pressure can be prevented.

Further, according to the present invention, by merely providing a ventilation hole in the pad holder, the negative pressure generated in the central space of the pad by centrifugal force during rotation of the pad is reduced or the generation of the negative pressure is reduced. Because it can be prevented, with a simple configuration, without increasing the cost, in a stable state,
The floor surface can be polished efficiently with less power.

The invention according to claim 2 is characterized in that a plurality of ventilation holes are provided along a circumference near the center of the pad holder.

When a plurality of ventilation holes are provided along the circumference close to the center of the pad holder as described above, air easily flows from the ventilation holes into the central space when the pad rotates.

According to a third aspect of the present invention, each of the ventilation holes is provided with an air introduction guide which has a predetermined angle in the rotation direction of the pad holder and guides air to the central space of the pad. It is characterized by the following.

When the air introduction guide is provided in the ventilation hole as described above, the air more easily enters the central space when the pad rotates.

[0018]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS FIGS. 1 to 3 show a first embodiment of a floor polishing machine according to the present invention. In addition, in the part corresponding to FIG. 6 and FIG.
The same reference numerals are given.

In this floor polishing machine, a conical cylindrical portion 4a is formed at the center of the pad holder 4, and is supported by the pad holder 4 along the circumference of the cylindrical wall of the cylindrical portion 4a. A plurality of ventilation holes 10 communicating with the center space 5a of the pad 5 are provided at regular intervals.

Reference numeral 11 denotes a pad cover provided above the pad holder 4, and reference numeral 12 denotes a cover for the polishing machine. Other configurations are the same as those of the floor polisher having the structure shown in FIGS. However, in the floor polishing machine of the present invention, the casters 9 for preventing the pad 5 from being pressed against the floor 8 by negative pressure during its rotation are unnecessary.

By providing the pad holder 4 with the vent hole 10 for supplying air to the center side of the pad 5 as described above, the pad 5 is rotated by the centrifugal force acting on the air between the pad 5 and the floor 8 when the pad 5 rotates. As the central space 5a of the pad 5 is in a negative pressure state, air flows from the outside into the central space 5a of the pad 5 through the ventilation hole 10 so as to be sucked. Thereby, when the pad 5 rotates, the negative pressure generated in the central space portion 5a of the pad 5 due to the centrifugal force can be reduced or the generation of the negative pressure can be prevented.

Therefore, it is possible to prevent the pad 5 from being pressed against the floor 8 by a negative pressure during its rotation, so that the frictional force of the pad 5 does not increase and the load of the motor 7 does not increase.
Since the rotation speed of the motor 7 does not decrease, the rotation speed of the pad 5 can be easily increased, and the effect of polishing the floor 8 can be enhanced.

According to the present invention, the pad 5 can be rotated by a simple structure in which the vent hole 10 is simply provided in the pad holder 4 without specially providing the casters 9 as shown in FIGS. Sometimes, it can be prevented from being pressed against the floor 8 by negative pressure, so that the floor 8 can be polished efficiently with less power in a stable state without increasing the cost. .

FIGS. 4 and 5 show a second embodiment of the floor polisher according to the present invention. In addition,
Parts corresponding to those in FIGS. 2 and 3 are denoted by the same reference numerals.

In this floor polishing machine, the ventilation holes 10 formed along the circumference of the cylinder wall of the central cylinder portion 4a of the pad holder 4 are provided in the rotation direction of the pad holder 4. An air introduction guide 4b which has an angle of 10 to 45 ° and guides air to the central space 5a of the pad 5 is provided. Other configurations are the same as those of the floor polisher of the first example shown in FIG.

As described above, the air introduction guide 4 is
By providing b, it becomes easier for air to enter the central space 5a when the pad 5 rotates.

[0027]

In the floor polisher according to the present invention, the pad holder is provided with a ventilation hole for introducing air into the central space of the pad. To reduce the negative pressure generated in the central space of the pad due to the centrifugal force acting on the air between the pad and the floor when the pad rotates, or to prevent the generation of the negative pressure. be able to. As a result, it is possible to prevent the pad from being pressed against the floor surface by a negative pressure during the rotation, the frictional force of the pad does not increase, the load on the motor does not increase, and the rotation speed of the motor decreases. Therefore, the number of rotations of the pad can be easily increased, and the effect of polishing the floor can be enhanced.

Further, according to the present invention, by merely providing a ventilation hole in the pad holder, the negative pressure generated in the central space of the pad due to centrifugal force during rotation of the pad is reduced, or the generation of the negative pressure is reduced. Because it can be prevented, with a simple configuration, without increasing the cost, in a stable state,
The floor surface can be polished efficiently with less power.

[Brief description of the drawings]

FIG. 1 is a longitudinal sectional view showing a first example of an embodiment of a floor polishing machine according to the present invention.

FIG. 2 is a longitudinal sectional view showing a configuration of a pad holder in the floor polishing machine shown in FIG.

FIG. 3 is a sectional view taken along line XX of FIG. 2;

FIG. 4 is a vertical sectional view showing a configuration of a pad holder which is a main part of a second example of the embodiment of the floor polishing machine according to the present invention.

FIG. 5 is a sectional view taken along line YY of FIG. 4;

FIG. 6 is a longitudinal sectional view of an example of a conventional floor polishing machine.

FIG. 7 is a longitudinal sectional view of another example of the conventional floor polishing machine.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Running wheel 2 Operating handle 3 Body 4 Pad holder 4a Cylindrical part 4b Air introduction guide 5 Pad 5a Center space part 6 Rotational force transmission mechanism 6a Drive pulley 6b Driven pulley 6c Belt 7 Motor 8 Floor surface 9 Caster 10 Vent hole 11 Pat cover 12 Cover of glazing machine

Claims (3)

[Claims] 1. An airframe provided with running wheels and an operation handle is assembled with an annular pad supported by a pad holder and rotating to rub and polish a floor surface, and a motor for rotating the pad. The above-mentioned floor polisher, wherein the pad holder is provided with a ventilation hole communicating with a central space of the pad supported by the pad holder. 2. The floor polisher according to claim 1, wherein a plurality of the ventilation holes are provided along a circumference close to the center of the pad holder. 3. An air introduction guide, which has a predetermined angle in the rotation direction of the pad holder and guides air to a central space of the pad, is provided in each of the ventilation holes. 2. The floor polishing machine according to 2.