JPH0274227A - Rotary brush device - Google Patents

Abstract

PURPOSE:To eliminate the generation of uncomfortable noise due to scrapes or the like by composing an upper side bolt and a lower side bolt arranged confronted with an upper side plate and a lower side plate, to be separated from each other via an elastic member 25, and by preventing oscillation from being incompletely with the bolts. CONSTITUTION:An upper side plate 10 fixed on a rotary shaft 5, and a lower side plate 12 with a brush fixed on the lower surface are arranged at an upper section and a lower section. On the upper side plats 10 and the lower side plate 12, at a plurality of sections confronted with each other and arranged at specified intervals in the circumferential direction, upper side bolts 27 and lower side bolts 19 are arranged so that the tip sections of the bolts 27 may be penetrated through the lower surface of the upper side plate 10 and the tip sections of the bolts 19 may be penetrated through the upper surface of the lower side plate 12, respectively. Besides, dimensions on a space between the upper side plate 10 and the lower side plate and spaces between the bolts 27 and the bolts 19 are set so that they cannot be butted to each other with shock in a normally used state, and the tips of the bolts 27 and the tips of the bolts 19 are connected to each other with elastic members 25, not to be separated from each other, and a load bearing on the bolts 27 and a reaction bearing on the bolts 19 are contrived to be received on the elastic members 25.

Description

[Detailed Description of the Invention] [Industrial Field of Application] The present invention relates to a floor polishing method in which a brush coated with abrasive particles, a sponge brush, a felt brush, a cloth brush, a brush brush, or a brush made of other materials is rotated. Regarding rotary brush devices for floor surfaces such as machines and floor cleaning machines, a brush stand is attached to the lower end of the rotating shaft via an elastic member such as a coil spring or rubber, and vibrations from the motor side and the brush stand side are absorbed by the elastic member. It was designed to do so.

[Conventional technology]

Conventionally, this type of rotating brush device consists of a pair of discs facing each other up and down, and a plurality of bolts are set up in the circumferential direction on the lower plate, symmetrical about the center of the disc, corresponding to each bolt position. A large through hole with a diameter of the bolt is drilled in the upper plate position, and a spring is interposed between the two plates to surround each bolt to provide elastic force. Japanese Utility Model Publication No. 58-104171 discloses a type in which the tip of the bolt is secured with a nut, and a lubricating bushing is fitted into a hole in the upper plate through which the tip of the bolt is inserted.

[Problem to be solved by invention]

The rotating brush device described in the prior art has a state in which the bolt communicates with the lower plate and the upper plate and transmits force from the lower plate to the upper plate and force from the upper plate to the lower plate, that is, the bolt communicates with the lower plate and the upper plate. This is undesirable because the inner surface of the bushing may be rubbed or the bolt may be tilted too much, resulting in a squeaky state, and the spring may not be able to absorb the vibrations half-heartedly. In addition, in the case of even larger vibrations, the length of the protrusion of the upper end of the bolt will also change with a large vibration amplitude, so when configuring the structure, it is necessary to take into account the avoidance of this fluctuation, and it is not suitable for miniaturization. Otherwise, when the spring is in a compressed state, there is a gap between the nut and the upper plate that can trap your fingers, which is dangerous, and even if your fingers do not get caught, dirt can get caught and make you feel unwell. was there.

The object of the present invention is to provide a rotating brush device that eliminates such defects.

[Means to solve the problem]

In order to achieve the above object, the rotating brush of the present invention includes an upper plate fixed to a rotating shaft and a lower plate with a brush fixed to the lower surface arranged vertically, and the upper plate and the lower plate are mutually connected. Upper bolts and lower bolts are installed at multiple locations facing each other and arranged at predetermined intervals in the circumferential direction, with the tips of the upper bolts protruding from the lower surface of the upper plate and the tips of the lower bolts protruding from the upper surface of the lower plate, respectively. The space between the upper plate and lower plate and the upper bolt and lower bolt are set to such a size that they will not come into contact with each other during shock under normal use, and the tip of the upper bolt and the lower bolt are The tip is inseparably connected to the tip by an elastic member such as a coil spring or a rubber member, and the elastic member receives the load applied to the upper bolt and the reaction applied to the lower bolt.

〔Example〕

The first embodiment shown in FIGS. 1 to 4 is a skirt (2) having an operating handle (1) that can be maintained in an upright position.
) A motor (4) is mounted on the stand (3) with the rotating shaft (5) of the motor protruding from the lower surface of the stand (3), and the rear side of the stand (3) A moving wheel (6) is attached to the lower end of the rotating shaft (5), and a bayonet receiving part (boss member (8) with force) is fixed irremovably to the outer peripheral edge of the rotary shaft (5), and separately from the inner peripheral edge. into the bayonet insertion part (
9), and a large-diameter ring-shaped lower plate α2 having a raised part Qυ on the inner peripheral edge, and a large number of upper recesses opening downward on the lower surface of the upper plate αQ. A large number of lower recesses I opening upward on the upper surface of the embankment θυ in the lower plate α force are set at αQ, and these upper recesses 0
j1 lower recesses Q4) are bored so as to face each other and are arranged at equal intervals in the circumferential direction, and a through hole a9 is opened in the center of the top wall of the upper recess 03 to form an upper step αe. In addition, a screw hole αη is opened in the center of the bottom wall of the lower recess α to form a lower step (lυ), and a lower hole 1-(11) is formed in the screw hole αD.
is screwed in from below through the drop-in part (A), and the head of the lower bolt α■ is locked to the lower opening edge of the screw hole 0η via the washer Cυ. Bolt (1'J
The upper end protrudes into the lower recess I, and a coil spring (C) is wound around the protruding end, with the upper and lower end portions (C) being tightly wound and the middle portion being loosely wound. The lower end part is connected by the inner thread formed by the wire ring of the lower bolt and the thread of the lower bolt α value, and the lower end of the coil spring (C) is connected to the lower step part Q.
At the same time, the upper end part of the coil spring (c) and the upper recess α3 are engaged, and the upper plate Ql is connected to the lower plate α2.
the upper bolt (5) and the coil spring (
The inner thread formed by the coil ring at the upper end part (c) of c) is screwed together, and the upper end of the coil spring (c), the upper step αe, and the head of the upper bolt (5) are screwed together. The upper opening edge of the through hole α9 is locked through each washer (to), and the presence of the intermediate portion C)4) of the coil spring (C) causes the upper plate a to be in a floating state, and the lower plate a Polished bat b with a function as a female side zipper on the underside of the
The second embodiment shown in Figs. 5 and 6 is a counterintelligence rubber Gυ which has a short cylindrical shape. The upper contact plate (32) and the lower contact plate @ are fixed irremovably by baking to the upper and lower surfaces of the
This utilizes the space between the rubber members with the lower bolt (c) erected on the outer surface of the rubber member.

[For production]

In the present invention, the upper bolt and the lower bolt are separated by an elastic member such as a coil spring or a rubber member, so theoretically, for example, assuming that the elastic member absorbs 100% of vibrations, , vibration transmission between the upper and lower bolts is completely blocked.

On the other hand, if the spring in the conventional spring had the function of absorbing 100% of vibrations, the bolt would transmit the vibrations as described above, completely blocking the transmission of vibrations. cannot be expected.

In other words, the rotating brush device of the present invention transmits the amount of vibration that cannot be absorbed by the elastic member due to the characteristics of the material, between the upper bolt and the lower bolt, but as long as the vibration is not too large, the vibration is sufficiently transmitted. It allows for efficient absorption.

[1. Effects of the Invention] Since the present invention has the above-described configuration, the vibration absorption is not half-heartedly achieved by the bolts as in the above-mentioned conventional products, and the friction of the bolts is not caused by the shock absorption. There is no risk of making an unpleasant sound, and since the bolt head does not move up and down when it vibrates, there is no need for a design that takes into account the avoidance of fluctuations, and it is suitable for miniaturization. There is no risk of fingers or the like getting caught, and there is no risk of dirt getting caught, and this has practical effects.

[Brief explanation of the drawing]

FIG. 1 is a partially cutaway side view of the entire rotating brush device according to the first embodiment of the present invention, FIG. 2 is a sectional view taken along the line A-A in FIG. 1, and FIG. FIG. 4 is a sectional view taken along line A', FIG. 4 is a perspective view showing a coil spring and bolt, FIG. 5 is a sectional view of main parts showing the second embodiment, and FIG. 6 is a perspective view showing a rubber member. (1)...Handle, (2)...Scar 1-. (3
3...Base part, (4)...Motor, (5)...Rotating shaft, (6)...Wheel, (Force...Bayonet receiving part,
(8)...Boss member, (9)...Bayonet insertion part, Ql...Upper side plate, αυ...Embankment part, α2...
Lower plate, αto...upper recess, α荀...lower recess, a9
...through hole, αe...upper step, αη...screw hole,
(IQ...lower step, (11...lower bolt, ■)
...Drop-in part, D...Washer, ■...Top end, ■...Lower end, Q41...Middle part, (2 pieces...Coil spring, Torch...Upper bolt, ( To)...
Washer, bad...polishing bat%■...surface fastener
, (3D...Rubber, C33...Upper side contact plate, (c)・
・・Lower side contact plate, (2) ・・Upper side bolt, (to)・・・
Lower bolt, (g)...Rubber member. (27)...Upper side bolt 73g (31)...Rubber (circle...Upper bolt C351...Lower bolt

Claims (1)

[Claims] It has an upper plate fixed to a rotating shaft and a lower plate with a brush fixed to the lower surface arranged vertically, and a large number of these upper plates and lower plates face each other and are lined up at a predetermined interval in the circumferential direction. An upper bolt and a lower bolt are installed at each location, with the tip of the upper bolt protruding from the lower surface of the upper plate and the tip of the lower bolt protruding from the upper surface of the lower plate, and the gap between the upper plate and the lower plate. The distance between the upper bolt and the lower bolt is set to such a size that they do not come into contact with each other due to shock during normal use, and the tip of the upper bolt and the tip of the lower bolt are made inseparable by an elastic member such as a coil spring or a rubber member. A rotating brush device characterized in that the elastic members are connected to each other so that the load applied to the upper bolt and the reaction applied to the lower bolt are received by an elastic member.