JPH0570450U - Floor cleaning - Google Patents

Abstract

(57) [Abstract] [Purpose] An object of the present invention is to provide a floor cleaning machine that prevents the cleaning tool base from colliding with an obstacle and damaging or damaging the cleaning motor to cause inconvenience. A rotary shaft 4 to which a cleaning tool base 3 composed of a main body 1 and a non-woven pad 2 is detachably attached, and a cleaning motor 5 for rotating the rotary shaft 4 are provided in the middle portion of a traveling wheel 6 at the lower front of the main body 1. A limit switch 7 for stopping the cleaning motor 5 is provided.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a floor cleaning machine, and more particularly to a floor cleaning machine equipped with a damage prevention structure for a cleaning motor.

[0002]

[Prior Art]

 In a conventional floor cleaning machine, although not shown, generally, a traveling wheel and a rotating shaft which is rotated by a cleaning motor using a geared motor which is normally placed upright as a cleaning means are detachably attached to a circular base. A cleaning tool consisting of a woven pad or a cleaning brush is detachably attached.

[0003]

[Problems to be solved by the device]

 However, in such a configuration, when the main body has an uneven floor or a floor with a step, the projections or steps of the uneven floor or the corners of the bumps collide with the cleaning tool from between the running wheels, which causes an obstacle. The rotation of the washing motor is restrained even if it is hit by an object and the gear of the motor is destroyed by an excessive rotation torque, or the gear is damaged even if it is not destroyed and the operating noise of the washing motor increases. However, there is a problem that at a cleaning site such as a supermarket where customers are engaged in business, it is too noisy to operate while there are customers. Moreover, because of the nature of the floor washer, it is necessary to get close to the step or its corners as close as possible, and to wash along the edge of the floor washer. There was no other choice but to rely on the cautions and empirical intuition and to solve these problems.

An object of the present invention is to solve these problems and to provide a floor cleaning machine which is not affected by the ability of an operator and is not easily damaged.

[0005]

[Means for Solving the Problems]

 A technical means of the present invention for solving the above-mentioned problems is, firstly, in a floor cleaning machine, a main body, and a rotary shaft to which a cleaning tool base composed of a non-woven pad or a cleaning brush is detachably mounted, It has a washing motor that rotates this, and a limit switch that stops the washing motor is provided in the middle of the traveling wheels at the front and bottom of the main body. The drive wheel is provided by the limit switch, the limit switch stops both the washing motor and the drive motor, and thirdly, the floor cleaning machine temporarily reverses the drive motor by the limit switch, and then the both motors are turned on. Fourth, the floor washer is provided with an infrared sensor instead of the limit switch in the middle of the traveling wheels at the lower front of the main body.

[0006]

[Action]

 With the above structure, in the first means, a limit switch for stopping the cleaning motor is provided in the middle of the traveling wheels in the lower front part of the main body so that the cleaning tool can approach the obstacle as close as possible and clean the edge along the edge. Even if the limit switch hits an obstacle and stops the rotation of the washing motor just before it enters the body from the middle of the traveling wheel and collides with the washing tool, the rotation of the washing motor may be forcibly restricted. Therefore, even if the main body is operated in the immediate vicinity of an obstacle, it is possible to perform the cleaning work without worrying about hitting the cleaning tool.

In addition, the second means also prevents the main body from overturning due to the collision of the driving wheel with the obstacle or the riding on the obstacle.

In the third means, the drive motor is momentarily rotated in the reverse direction by the limit switch and then both motors are stopped. You can

In addition, in the fourth means, an infrared sensor is provided instead of the limit switch in the middle part of the traveling wheel at the lower front part of the main body, so that the limit switch can be separated from the obstacle by being caught by the obstacle. It can be prevented from disappearing.

[0010]

【Example】

 Hereinafter, a floor cleaning machine according to an embodiment of the present invention will be described with reference to the accompanying drawings.

1 to 4, a floor cleaning machine main body 1 has a rotary shaft 4 to which a cleaning tool base 3 composed of a non-woven pad 2 is detachably attached, and a cleaning motor for rotating the rotary shaft 4. 5, a limit switch 7 for stopping the washing motor 5 is provided at an intermediate portion of the front and lower traveling wheels 6 of the main body.

Next, the operation of the above configuration will be described. The cleaning motor 5 is rotated to rotate the rotating shaft 4, that is, the cleaning tool base 3 composed of the non-woven pad 2 for cleaning work. At this time, even if the obstacle A is approached to the last minute, and even if the obstacle A is washed along the edge thereof, just before the obstacle A comes under the main body 1 from the intermediate portion of the traveling wheel 6 and collides with the cleaning tool base 3, As shown in FIG. 2, since the limit switch 7 hits the obstacle A to stop the rotation of the washing motor 5, the rotation of the washing motor 5 is not forcibly restrained, and the main body 1 is washed even in the immediate vicinity of the obstacle A. It is possible to drive and wash without worrying about applying it to the base 3. In addition, when the limit switch 7 is separated from the obstacle A, the limit switch 7 may be restored to automatically restore the washing motor 5 to the operation state again. It is also possible to freely set the switch by setting the switch.

Second Embodiment FIG. 3 shows a second embodiment, in which the main body 1 is provided with the drive wheels 9 by the drive motor 8, and the operator can carry out the cleaning work by self-propelling without pushing the main body 1. The limit switch 7 stops both the cleaning motor 5 and the drive motor 8 even if the obstacle A is hit with too much momentum. However, the collision force can be reduced, and the body 1 can be prevented from tipping over when riding on the obstacle A.

(Embodiment 3) In the third embodiment, after the drive motor 8 is momentarily reversed by the limit switch 7 as described above, the limit switch is set so as to stop both the motors. The impact force of the floor cleaning machine main body 1 is further greatly reduced, or a sudden braking is applied to prevent the collision, thereby preventing the destruction of not only the cleaning motor 5 but also the main body 1.

(Fourth Embodiment) FIG. 4 shows a fourth embodiment, in which an infrared sensor 10 is provided instead of the limit switch 7 at an intermediate portion of the traveling wheel 6, so that the limit switch 7 is obstructed. It can be prevented that the object A is caught and cannot be separated.

[0016]

[Effect of the device]

 As is clear from the above description of the embodiment, the floor cleaning machine of the present invention has the following effects.

(1) It is possible to prevent the gear of the washing motor from being broken or scratched to increase the operating noise without depending on the experience and intuition of the operator.

(2) Even if the drive wheels are provided, there is no danger of destruction due to collision with an obstacle or tipping over of the main body.

(3) In addition, it is possible to avoid the danger of sudden braking. (4) It is possible to prevent the person from being caught by an obstacle and being unable to separate.

As described above, it is possible to provide an excellent floor cleaning machine.

[Brief description of drawings]

FIG. 1 is a vertical sectional view showing the overall configuration of a floor cleaning machine according to a first embodiment of the present invention.

FIG. 2 is a perspective view showing a state where the limit switch hits an obstacle.

FIG. 3 is a front view showing a cross-section with a part of the floor cleaning machine according to the second and third embodiments of the present invention cut away.

FIG. 4 is a perspective view illustrating the operation of a floor cleaning machine according to a fourth embodiment of the present invention.

[Explanation of symbols]

 1 Main Body 2 Nonwoven Pad 3 Cleaning Tool Stand 4 Rotating Shaft 5 Cleaning Motor 6 Running Wheel 7 Limit Switch

Claims (4)

[Scope of utility model registration request] 1. A main body, a rotary shaft to which a cleaning tool base having at least one of a non-woven pad and a cleaning brush is detachably attached, and a cleaning motor for rotating the rotary shaft. A floor cleaning machine provided with a limit switch for stopping the cleaning motor in the middle part. 2. The floor cleaning machine according to claim 1, wherein the main body is provided with drive wheels driven by a drive motor, and the limit switch stops both the cleaning motor and the drive motor. 3. The floor cleaning machine according to claim 1, wherein both the cleaning motor and the driving motor are stopped after the driving motor is momentarily reversed by a limit switch. 4. The floor cleaning machine according to claim 1, 2 or 3, wherein an infrared sensor is provided instead of the limit switch.