JPH06141925A - Rotary brush device - Google Patents

Abstract

PURPOSE:To lighten pushing force by pressing downward by means of a cushion spring a fitting auxiliary member provided on the lower surface of the center place of a floor cleaning rotary brush so as to be movable up and down, fitting on the lower surface of the fitting auxiliary member casters whose wheel height is almost the same as that of the lower surface of the rotary brush. CONSTITUTION:A skirtlike surrounding edge 3 behind of which a manual pushing handle 1 to swing back and forth and a carrying caster 2 are attached, is formed at the whole periphery of a fitting stand 4. A motor 6 installed to the inside of the fitting stand 4 is decelerated 5, and a rotary shaft 7 is made downward, and an annular brush fitting board 26 is fitted through a receiving portion 8, a boss member 9 and an attaching/detaching member 13. A rotary brush 34 is fitted to the brush fitting board 26 through a cushion 28. A top- closed cylindrical portion 16 is fitted to the attaching/detaching member 13, and a fitting auxiliary member 19 that is energized downward by means of a built-in coil spring 21 is provided. On its lower surface, plural casters 22, 23 whose wheel height is almost equal to the lower surface of the rotary brush 34, are fitted. As a result, movement work by means of the manual pushing handle 1 is easily conducted.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention is used for cleaning brushes, sponge brushes, brushes made of sponge dusted with abrasive particles, felt brushes, cloth brushes and other brushes for rotating floors and stairs. -Rotary brush devices such as brush type floor cleaners, floor polishers, and staircase cleaners.

[0002]

2. Description of the Related Art The three-brush type, which is widely known and has three brushes shown in FIG. 7, is suitable because it is light and smooth when cleaning in a straight forward and backward direction. Two brush type with
It is suitable because it is light and smooth when cleaning backwards straight and left / right straight, but both of these are not heavy and smooth when cleaning diagonally forward / backward, and sometimes this weight is This may cause a large load on the power supply and may cause a power failure.In addition to being heavy and not smooth, it may not be possible for an elderly person or a woman with weak strength to use it, and it may not be possible to move it diagonally. -When cleaning is done by only going straight forward / backward and going straight left / right while avoiding the difficulties caused by going backward, the work amount per hour was reduced.

The following one-brush type having one brush is also disclosed in Japanese Utility Model Laid-Open No. 56-151075. That is, the output shaft extends vertically downward on the lower surface of the trolley that is movable by the rolling of casters provided on the peripheral portion of the lower surface, and the rotating brush is provided at the protruding end so as to be vertically movable along the key. In addition, a compression coil spring that urges the rotating brush downward is wound around the protruding portion.

In this one-brush type vacuum cleaner, the distance between the dolly and the casters is fixed and does not change, and the turning operation of the casters is a force that is swung in a substantially fixed direction by the rotation of the rotary brush. It is performed by the pushing force applied by the operator. When the pushing force applied by the operator is zero, it is determined only by the swung force, and in most cases, it is directed in a fixed direction. When the operator applies a pushing force in the state of facing the certain direction, the pushing force is light if the direction of the pushing force is parallel to the certain direction,
If it is not parallel, it feels heavy, and especially if it is in the orthogonal direction, it feels rather heavy. In the above description, when the pushing force applied by the operator is zero, it is stated that the caster faces the fixed direction, but normally, the operator does not zero the pushing force for such a long time. However, even if it becomes zero for a moment, the caster will face in the above-mentioned fixed direction. As is well known, during actual driving (when in use), the entire body is swung to the right and left, meandering and pushed forward. In this meandering push, when the direction changes from left to right and vice versa, or when the push force is moderate, the state becomes zero for a moment, so the direction of the push force and the direction of the caster are almost parallel. It is thought that it has never been. Therefore,
During operation, the non-parallel pushing force is heavy. During operation, the casters may or may not land, and when the time when the caster returns to the landing state from the non-landing state is the state where there is pushing force, the state parallel to the moment is When there is no pushing force, it is in a non-parallel state.

[0005]

SUMMARY OF THE INVENTION It is an object of the present invention to provide a novel rotary brush device which is devised to eliminate the above-mentioned heavy pushing force.

[0006]

In order to achieve the above object, a floor rotary brush apparatus according to the present invention is a floor rotary brush apparatus provided with one rotary brush rotated by a motor. A mounting auxiliary member provided on the lower surface of the central portion of the base portion so as to be vertically movable, a cushion spring sandwiched between the brush base portion and the mounting auxiliary member in a state of pressing the mounting auxiliary member downward, and a mounting auxiliary member. The caster is attached to the lower surface of the wheel so that the lower end of the wheel is at the same height or slightly different from the lower surface of the rotating brush.

[0007]

Since the present invention has the above-described structure, the caster rotates around the central axis of rotation of the brush as the rotary brush rotates, and always turns at a high speed. In other words, the caster quickly performs the turning operation with the rotation of the rotating brush even when the pushing force is zero, the period parallel to the pushing force is the same as the rotation speed of the rotating brush, and the operator is not parallel. It becomes a parallel state at such a fast cycle that you do not feel the heavy state of. In this way, when the non-parallel state and the parallel state are alternately and continuously performed at high speed, the pushing force applied by the operator is the same as when pushing the whole or parallel (light) Considered, the operator will push in a light state. On the other hand, the above-mentioned force that is swung in a fixed direction by the rotation of the rotating brush is
When the casters become non-parallel to the swung force, the casters apply braking, so that the entire rotary brush is not swung. However, as the caster's direction approaches the parallel state to the swung force, the braking is attenuated, but as described above, the caster's direction instantly changes to the non-parallel state, resulting in less swinging. It will be.

[0008]

Since the rotary brush device according to the present invention has the above-mentioned structure, the caster is in a state parallel to the direction of the force to be pushed to the operator as the rotary brush rotates during operation and in a state not parallel to the direction. And is continuously and alternately performed at a high speed so that the operator does not feel a heavy state, and the operator can swing between a state parallel to the direction of the swung force of the entire rotary brush device and a state not parallel to it. It is made continuously and alternately at high speed with a feeling of low speed.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS In the first embodiment shown in FIGS. 1 and 2, the hand handle 1 which can be tilted when used and upright when not in use is placed on the rear part, and the whole handle is placed on another place. A portable caster 2 to be used for landing at the time of transfer is constructed under the rear part of the same, and a mounting base 4 having a skirt-shaped surrounding edge 3 on the entire peripheral edge is configured, and the mounting base 4 is decelerated to a substantially central position. The motor 6 with the machine 5 is attached so that the rotating shaft 7 faces downward, and the boss member 9 having the bayonet receiving portion 8 on the outer peripheral edge is fixed to the lower end of the rotating shaft 7 in a detachable and non-rotatable manner by screwing.

Separately from this, a detachable member 13 having a bayonet insertion portion 11 at the upper edge of the inner periphery and a collar-shaped portion 12 at the lower edge of the outer periphery is formed. The caster mounting plate 14 is fixed to the opening on the lower surface, the central portion of the caster mounting plate 14 is bulged upward to form the ceiling-shaped tubular portion 16, and the central portion of the ceiling wall of the ceiling-mounted tubular portion 16 is recessed. Due to this, a concave groove 18 having a ring-shaped lower surface is formed on the lower surface of the ceiling wall, and
A dish-shaped mounting auxiliary member 19 is housed therein so as to be vertically movable along the inner peripheral surface of the ceiling-mounted cylindrical portion 16, and the retaining ring 20 is attached to the lower edge of the inner peripheral surface of the ceiling-mounted cylindrical portion 16. A coil spring 21 is provided between the top wall of the ceiling-shaped tubular portion 16 and the bottom wall of the mounting auxiliary member 19, and the upper end of the coil spring 21 is the top surface of the groove 18 and the lower end is the bottom of the mounting auxiliary member 19. The casters 22, 23, and 24 are attached to the lower surface of the bottom wall of the attachment auxiliary member 19 in a regular triangular point arrangement while sandwiching the walls in a pressed state, and the attachment / detachment member is a ring-shaped brush attachment plate. 26, the collar-shaped portion 12 is fixed to the upper surface of the inner peripheral edge of the brush mounting board 26 with screws 27, and a ring-shaped cushion 28 made of an elastic material such as sponge is provided on the lower surface of the brush mounting board 26. A number of hooks (not shown) on the underside of The rubber sheets made ring-shaped brush holding member 30 with the lower surface of the caster 22, 23, 24
Of the sponge 31 each of which is affixed in a state of being surrounded, and the lower surface of the brush holding member 30 is sprinkled with abrasive particles.
The rotary brush 32 is constituted by piercing the hooks with the hooks and fixing them in a replaceable manner.

The rotary brush 32 is replaceably attached to the rotary shaft 7 by fitting the bayonet insertion portion 11 into the bayonet and the receiving portion 8. Reference numeral 33 in the figure denotes a battery for the power source of the motor 6.

The second embodiment shown in FIGS. 3 and 4 is a cylindrical rotary brush for cleaning a vertical surface 3 for cleaning a vertical surface such as a wall surface on an outer peripheral edge of the rotary brush for cleaning a horizontal surface 34.
The rotary brush 36 having 5 integrally is mounted.

In the third embodiment shown in FIGS. 5 and 6, one caster 22 is attached.

A detailed description of the second and third embodiments will be omitted by assigning the same reference numerals to the same parts as in the first embodiment.

[Brief description of drawings]

FIG. 1 is a partially cutaway side view showing a first embodiment of the present invention.

FIG. 2 is a bottom view of the same.

FIG. 3 is a partially cutaway side view showing a second embodiment of the present invention.

FIG. 4 is a bottom view of the same.

FIG. 5 is a partially cut side view showing a third embodiment of the present invention.

FIG. 6 is a bottom view of the same.

FIG. 7 is a perspective view showing a conventional three-brush type.

FIG. 8 is a perspective view showing a conventional two-brush type.

[Explanation of symbols]

 1 Hand Push Handle 2 Portable Casters 3 Enclosure Edge 4 Mounting Base 5 Reduction Gear 6 Motor 8 Receiving Part 9 Boss Member 11 Inserting Part 12 Collar-like Part 13 Attachment / Detachment Member 14 Caster Mounting Plate 16 Erecting Tube-shaped Part 18 Recessed Groove 19 Attachment Auxiliary Member 20 Stop Ring 21 Coil Spring 22 Caster 23 Caster 24 Caster 26 Brush Mounting Board 27 Screw 28 Cushion 30 Brush Holding Member 31 Brush 32 Rotating Brush 34 Rotating Brush Part 35 Rotating Brush Part 36 Rotating Brush

Claims (3)

[Claims] 1. A floor rotary brush device having a rotary brush rotated by a motor, wherein a mounting auxiliary member movably provided vertically on a lower surface of a central portion of a brush base of the rotary brush, the brush base and the mounting auxiliary. A cushion spring sandwiched between the members in a state of pressing the mounting auxiliary member downward, and a caster mounted on the lower surface of the mounting auxiliary member with the lower end of the wheel at the same height as or slightly different from the lower surface of the rotating brush. A rotating brush device characterized by having 2. The rotary brush device according to claim 1, wherein a twin-wheel type caster is used as the caster. 3. The rotary brush device according to claim 1, wherein three casters are mounted on the lower surface of the mounting auxiliary member in a three-way arrangement.