JPH06269386A - Rotary brush device - Google Patents

Abstract

PURPOSE:To eliminate a heavy pushing and to brake swinging round by a method wherein an auxiliary plate which is borne rotatably around the same axis as a rotary shaft of a motor is fitted on the downside of a support part which is fitted on the downside of a rotary brush table, and the auxiliary plate is provided with a plurality of direction-changeable casters on the lower surface of the auxiliary plate. CONSTITUTION:A spring mounting part 18 is placed at an upper part in a space 21 formed at a central place of a brush table which comprises an attaching and detaching member 13 and a brush mounting table board 26. A ring-shaped support member 17 is fitted on a lower surface of the spring mounting part 18 through a conical coil spring 16. An auxiliary plate 19 is borne through a bearing 15 rotatably around the same axis as a rotary shaft 7 of a motor 6 under the support member 17. Three direction changeable casters 22, 23 and 24 are mounted on a lower surface of a bottom wall of the auxiliary plate 19 at such positions as to form a right triangle. A rotary brush is thus formed. The rotary brush 32 thus formed is mounted replaceably on the rotary shaft 7 by fitting an insertion part 11 of a bayonet to a receiving part 8 of the bayonet.

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 sponged 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 having three brushes 37 shown in FIG. 4, which is widely known in the past, is light and smooth when cleaning in a straight forward and backward direction, and the two brushes shown in FIG. The two-brush type with the brush 38 is light and smooth when cleaning forward / backward straight and left / right straight, but both are not heavy and smooth when cleaning diagonally forward / backward. Sometimes, this weight may cause a large load on the motor and cause a power failure, and it may be difficult for an old man or woman with weak strength to use it because it is so heavy and not smooth. Not only that, when avoiding the difficulties caused by diagonally moving forward / backward and cleaning only by moving forward / backward and left / right, 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 is vertically protruded downward on the lower surface of the carriage (not the brush base of the rotating brush) that is movable by the rolling of the casters provided in the peripheral portion of the lower surface, and the key is attached to this protruding end. A type in which a rotating brush is provided so as to be movable up and down along the winding, and a compression coil spring for urging 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. 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.

[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 and to devise swinging braking.

[0006]

In order to achieve the above object, a floor rotary brush apparatus according to the present invention is a rotary brush apparatus including a rotary brush rotated by a motor,
A support portion provided below the central portion of the brush base portion of the rotating brush, an auxiliary plate that is rotatably supported below the support portion around the same axis as the rotation axis of the motor, and an auxiliary plate. And a turning type caster attached to the lower surface of the wheel with the lower end of the wheel at the same height as or slightly different from the lower surface of the rotating brush, and the support of the brush base is attached by an elastic member such as a coil spring. In addition, a plurality of turning casters are attached to the lower surface of the auxiliary plate.

[0007]

When the rotating brush is rotated, the supporting portion is rotated at a high speed together with the rotating brush. When the supporting portion is rotated at a high speed, the casters are in a state of being parallel or nearly parallel to the pushing force applied by the operator. Makes pushing light and easy. Also, when the pushing force applied by the operator becomes zero and the caster is in a state in which the caster is in a direction not parallel to the swinging force, the caster is swung by the caster and the force is braked and swinging is reduced. .

[Effect of device]

Since the rotary brush device according to the present invention is constructed as described above, the caster fulfills the function of making the pushing and pushing state light and easy and the function of braking the swinging as described in the above operation. Thus, it has a preferable effect of sufficiently achieving the intended purpose.

[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. A ring-shaped ring made of an elastic material such as a sponge is provided on the brush-mounting base 26, and the collar-shaped portion 12 is fixed to the upper surface of the inner peripheral edge of the brush-mounting base 26 with screws 27. -Shaped cushion 28, and a rubber sheet ring-shaped brush holding member 30 having a plurality of hooks (not shown) on the lower surface of the cushion 28, respectively, are attached, and the lower surface of the brush holding member 30 is ground. A sponge brush 31 sprinkled with particles is rotatably fixed by piercing the hook barb, and further, an empty space formed at a central portion of the brush base portion including the detachable member 13 and the brush mounting base 26. The spring mounting portion 18 provided in an upper portion of the 21, provided a ring-shaped support member 17 via a conical coil spring 16 to the lower surface of the spring mounting portion 18, the support member 1
Auxiliary plate 19 is rotatably supported below bearing 7 by means of bearing 15 in the same manner as rotation shaft 7 of motor 6 so as to be rotatable about its axis. The rotating brush 32 is configured by mounting the casters 22, 23, 24 in a regular triangular point arrangement.

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.

In the second embodiment shown in FIG. 3, a cylindrical vertical surface cleaning rotary brush portion 35 for cleaning vertical surfaces such as wall surfaces is integrally formed on the outer peripheral edge of the horizontal surface cleaning rotary brush portion 34. The rotating brush 36 which it has is attached.

The present invention uses another elastic member in place of the conical coil spring, provides a support portion on the brush base without using the conical coil spring and the elastic member, has one caster, and has a power source. It can be implemented by exchanging.

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 showing a conventional three-brush type.

FIG. 5 is a bottom view showing a conventional two-brush type.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Hand-pushing handle 2 Portable caster 3 Enclosing edge 4 Mounting base 5 Reduction gear 6 Motor 7 Rotating shaft 8 Receiving part 9 Boss member 11 Insert part 12 Collar part 13 Attachment / detachment member 15 Bearing 16 Coil spring 17 Supporting member 18 Spring mounting Part 19 Auxiliary plate 21 Space 22 Caster 23 Caster 24 Caster 26 Brush mounting base 27 Screw 28 Cushion 30 Brush holding member 31 Brush 32 Rotating brush 33 Battery 34 Rotating brush portion 35 Rotating brush portion 36 Rotating brush

Claims (3)

[Claims] 1. A rotary brush device having a rotary brush rotated by a motor, wherein a support portion provided below a central portion of a brush base portion of the rotary brush and a rotation shaft of the motor provided below the support portion. An auxiliary plate that is rotatably supported about the axis of the rotating plate, and a turning caster that is attached to the lower surface of the auxiliary plate 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. 2. The rotary brush device according to claim 1, wherein the support portion is attached to the brush base portion by an elastic member such as a coil spring. 3. The rotary brush device according to claim 1, wherein a plurality of turning casters are attached to the lower surface of the auxiliary plate.