JPH0577401B2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention has two or more rotating brushes that are rotated simultaneously by separate electric motors, and the rotating brushes are used for floor polishing and floor cleaning operations. Regarding the improvement of multi-headed rotary brush devices for floors such as floor polishers and floor cleaning machines in which only the rotary brushes are attached to the floor, the movability (traveling) and turning that occur because only the rotary brushes are attached to the floor to support their own weight. This device is designed to improve the poor performance and operability, and in order to improve this, it is constructed so that its own weight during operation is supported by a rotating brush and a single caster.

Note that the term "rotary brush" in this text includes brush brushes, sponge brushes, sponge brushes sprinkled with abrasive particles, felt brushes, cloth brushes, and brushes made of other materials.

[Conventional technology]

First, there are floor polishers, floor cleaning machines, etc. that have two or more rotating brushes that are rotated simultaneously by separate electric motors, and that only the rotating brushes are placed on the floor during floor polishing or floor cleaning operations. A multi-head rotary brush device for floors will be explained.

This type of rotating brush device was previously disclosed in Japanese Patent Application No. 60-269173 (Japanese Unexamined Patent Publication No. 62-127027) by the inventor of the present application.
It is shown in In other words, the rotating brush receives the weight of the electric motor and the platform to create frictional resistance between the rotating brush and the floor surface, and each of the two or more rotating brushes is rotated by the operation of a separate electric motor of the same standard. A device that achieves the floor polishing function by vibrating and creating a dancing phenomenon (hereinafter referred to as
It is called first-to-file. ).

Conventionally, floor polishing machines (hereinafter referred to as the former) are equipped with rollers (wheels) at the rear to increase or decrease the frictional resistance between the rotating brush and the floor and to suppress vibrations. 1973-
An electric floor polishing machine (hereinafter referred to as the latter) disclosed in Publication No. 8062, in which a single electric motor performs the floor polishing function and whose wheels do not touch the floor when performing the same function. It is disclosed in Japanese Utility Model Application Publication No. 52-167853 and Japanese Patent Application Publication No. 54-107159.

[Problem to be solved by the invention]

The above-mentioned prior application has the mobility (traveling) and turning performance caused by supporting its own weight by only the rotating brush landing on the floor.
It had poor operability.

Such problems cannot be improved by using the former and latter wheels.

An object of the present invention is to provide a novel multi-head rotary brush device for floors that achieves the above-mentioned improvements.

[Means to solve the problem]

In order to achieve the above object, the multi-head rotary brush device for floors according to the present invention has a base part 2 with a manual operation handle 1, a rotating shaft 5, an arrangement in which the weight is balanced around the periphery of the base part 2, and a rotary shaft 5,
Two or more drive electric motors 4, 4' provided with their respective rotating shafts 5,
Rotating brushes 6, 6' are fixed to the lower end of 5' in a downwardly facing position with the weight balanced through coupling rings 7, 7', and rotating brushes 6, 6' are attached to the lower surface of the center point of the base part 2 for floating the base part 2. It has one adjustable caster 8 having a height such that when the lower surfaces of all the rotary brushes are placed on the floor together, they land together on the floor.

〔Example〕

In the embodiment shown in the figure, two vertical shaft electric motors 4, 4' with a built-in reducer 3 of the same standard are fixed on both left and right sides of the upper surface of a stand 2 equipped with an operation handle 1, and their rotating shafts 5, 4' are fixed.
5' protrudes from the lower surface of the base part 2, and rotary brushes 6, 6' are fixed to the respective protruding ends thereof in a downward and removable state via coupling rings 7, 7'. The swivel caster 8 is installed in such a way that it lands between the two rotating brushes 6, 6', and when the swivel caster 8 lands on the ground, the two rotating brushes 6, 6' are kept from floating on the floor as much as possible. At the same time, wheels 11 and 11' are attached to the rear side of the platform 2 via an axle 9 and a bearing member 10, and these wheels 11,
When the rotary brushes 6, 6' and the swivel caster 8 are on the floor, the 11' is floating above the floor, and when the whole body is tilted backward, it is on the floor and the rotary brushes 6, 6' and the swivel caster 8 are on the floor. It is designed to be in a state.

In the figure, 12 is a brush stand, 13 is a central axis, and 14 is a brush stand.
Reference numeral 15 indicates a metal fitting for setting the inclination angle of the operating handle 1, 15 indicates a skirt, and 16 indicates a buffer spring.

The present invention uses an AC type, a DC type, an AC/DC type, a type without a speed reducer, etc. as the electric motor, controls the electric motor using a ball change, an inverter with a slow starter, an AC/DC conversion, etc., and uses three types of electric motors and rotating brushes. It can also be implemented by having more than one set or by providing a height adjustment device on the swivel casters.

[Effect]

Since the present invention is as described above, when the electric motors 4 and 4' are started with the rotating brushes 6 and 6' placed on the floor as shown in the figure, the left rotating brush 6 is moved by the left electric motor 4. At the same time, the motor 4 on the left side directly receives the mechanical high-speed micro vibrations of the motor 4 itself, and while supported by the casters 8 on the floor, moves slightly at high speed as if bouncing. While being supported by the caster 8 by the right electric motor 4', it rotates and vibrates at high speed. However, the left motor 4 and the right motor 4'
As mentioned above, if the standards are the same, the frequency and amplitude of the mechanical high-speed micro vibrations and the rotational speed will not match exactly, so as a result, the left and right parts will be casters. 8
It operates through a dancing phenomenon in which it vibrates at high speed and dances as if bouncing apart around a supporting point.
During this dancing phenomenon, when a force is applied to the operating handle 1 to move the whole body along the floor surface, the whole body moves easily, lightly and smoothly.
In addition, when cleaning the floor surface in a meandering manner in which the entire floor is reciprocated in the horizontal direction, or in cleaning by moving the brush along the corners of the room, the direction of rotation of the rotating brush, the rotational force, the state of landing on the floor, and the Even if a reaction force occurs due to the interaction of pressure, etc., the caster bears most of the reaction force, which improves movement (traveling) and turning ability, resulting in improved operability.

〔Effect of the invention〕

Since the present invention has the above-described structure, it has the excellent effect of improving mobility, turning performance, and operability by the function of absorbing the reaction force of the swivel caster.

[Brief explanation of the drawing]

FIG. 1 is an overall partially cut-away front view showing an embodiment of a multi-head rotary brush device for floors according to the present invention, and FIG. 2 is a partially cut-away side view thereof. 1... Operation handle, 2... Base, 3... Reducer, 4, 4'... Electric motor, 5, 5'... Rotating shaft,
6, 6'... Rotating brush, 7, 7'... Coupling, 8... Flexible caster, 9... Axle, 10...
...Bearing member, 11, 11'...Axle, 12...Brush stand, 13...Center shaft, 14...Inclination angle setting fitting, 15...Skirt, 16...Buffer spring.

Claims (1)

[Claims] 1 A base part 2 with a manual operation handle 1, and two or more drive units arranged around the periphery of the base part 2 so that the weight is balanced, and with rotating shafts 5, 5' protruding below the base part. Electric motors 4, 4' and respective rotating shafts 5,
Rotating brushes 6, 6' are fixed to the lower end of 5' in a downwardly facing position with the weight balanced through coupling rings 7, 7', and rotating brushes 6, 6' are attached to the lower surface of the center point of the base part 2 for floating the base part 2. A multi-head rotary brush device for a floor, characterized in that it has one flexible caster 8 having a height such that when the lower surfaces of all the rotary brushes are placed on the floor together, they land together on the floor.