JP4166425B2 - Brush or pad mounting device for floor treatment machine - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a floor surface processing machine configured to clean and polish a floor surface by rotating a cleaning brush or pad at high speed with a motor, and specifically, to a drive shaft of the motor. On the other hand, the present invention relates to a brush or pad attachment device for a floor surface processing machine to which a cleaning brush or a pad can be attached.
[0002]
[Prior art]
With regard to the brush or pad mounting device, as described in, for example, Japanese Utility Model Laid-Open No. 4-56454, a boss having the same polygonal insertion hole is used as a brush or a polygonal motor drive shaft. A step formed on the outer peripheral surface of the drive shaft is formed on the outer surface of the drive shaft by attaching the drive shaft to the fitting hole and inserting the drive shaft into the fitting hole, An attachment device configured to integrally attach a brush or a pad to a drive shaft by being inserted into and engaged with a groove) is used.
[0003]
[Problems to be solved by the invention]
The conventional mounting device configured as described above transmits the rotation of the drive shaft to the brush or pad side by meshing the polygonal shape by forming the motor drive shaft and the fitting hole into which the motor drive shaft is fitted. These brushes or pads can be rotated at a high speed by a motor and the bottom surface can be cleaned or polished without any trouble. However, as described above, it is fitted with a drive shaft having a polygonal cross section. The hole has a problem that it is difficult to be fitted due to a corner when the drive shaft is fitted into the fitting hole.
[0004]
In addition, when the brush or pad is attached to or detached from the drive shaft, a locking operation lever provided so as to be able to advance and retreat relative to the drive shaft is provided on the upper surface of the brush or pad. Since the pad is made in a fairly large disk shape, when operating the lever, it is difficult for the hand to enter the position of the operating lever, and the brush or pad hits the arm, making it difficult to work. There is a problem that the work of attaching and detaching is very complicated, and the brush or pad is attached by fitting the drive shaft and the fitting hole formed in the above polygonal shape. As a result, there is a problem that the brush or the pad cannot flexibly follow the inclination or unevenness of the floor surface, resulting in uneven cleaning and polishing on the floor surface.
[0005]
Therefore, the technical problem of the present invention is that the drive shaft of the motor formed in a polygonal shape and the fitting hole on the brush or pad side can be fitted very smoothly without being obstructed by the corner of the shaft or hole. Attaching the brush or pad for a floor surface processing machine that can be easily attached to and detached from the drive shaft, and that the brush or pad flexibly follows the floor surface. Is to provide a device.
[0006]
[Means for Solving the Problems]
(1) In order to solve the above technical problem, according to the present invention, the floor surface is cleaned or polished by rotating a cleaning brush or pad with a motor as described in claim 1. A floor processing machine that protrudes downward from the bottom of the floor processing machine with a polygonal drive shaft rotated by the motor, on the upper surface of the mounting plate attached to the upper surface of the cleaning brush or pad. Is provided with a mounting tool having a boss with a recessed insertion hole having a polygonal cross-section into which the drive shaft can be inserted, and the mounting tool is recessed on the outer peripheral surface of the tip of the drive shaft. A locking claw that engages the claw groove and integrates the drive shaft and the cleaning brush or pad is attached so as to be able to move forward and backward in the radial direction centering on the boss, and the tip of the drive shaft that is beyond the claw groove With a little cross-section polygonal shape, The maximum diameter of the inscribed circle of the polygonal, and, while a tapered shape gradually diameter becomes thinner toward the tip portion, the said locking pawl, always the drive shaft pawl of the tip Tsumemizo A spring pressure that is repelled in the direction to be engaged is applied, and an operation lever that can slide the entire locking claw in the axial direction against the spring pressure is attached downward to the middle part of the locking claw. By projecting the lower end side of the operation lever through the slide groove provided in the mounting plate into the hole formed in the center of the bottom surface of the cleaning brush or pad, and sliding the operation lever from the hole The locking claw is configured so that the claw piece can slide in a direction away from the claw groove of the drive shaft against the spring pressure, and the drive shaft is fitted with the boss of the fixture for fitting the drive shaft. Fitting tool with fitting hole provided in With the function of transmitting the rotation, the play is configured to have some play, and the play between the drive shaft and the fitting hole is narrowed to the back side of the fitting hole. It is configured so that there is a small amount between the root end side of the drive shaft and the entrance side of the fitting hole, and a relatively large amount at the tip side of the drive shaft and the inner back side of the fitting hole. A mounting device for a brush or pad for a floor surface processing machine.
[0007]
According to the means according to claim 1 described in the above (1), the drive shaft of the motor formed in a polygonal shape is fitted into the fitting hole of the brush or pad-side fixture similarly formed in the polygonal shape. At that time, since the tip of the drive shaft is formed in a tapered shape, the drive shaft is inserted into the insertion hole very easily and smoothly without being obstructed by the corners of the drive shaft and the insertion hole. The brush or pad can be quickly attached to the drive shaft in a short time, and the replacement or maintenance of the brush or pad can be performed very easily.
[0008]
Further , according to the means according to claim 1 described in the above (1), the locking claw provided so as to be able to advance and retreat in the radial direction centering on the boss of the fixture is used, and the claw piece at the tip is driven by the spring pressure. By engaging with the claw groove, the fitting state of the drive shaft fitted in the fitting hole on the brush or pad side is maintained, while this locking claw can be attached downward to the middle part of the locking claw. And by operating the operating lever protruding inside the hole formed in the center of the bottom of the brush or pad by passing through the slide groove provided in the mounting plate that reinforces the brush or pad, By sliding in the axial direction (radiation direction) against the spring pressure, the claw piece can be disengaged from the claw groove, so that the upper surface of a large brush or pad is screwed into the upper surface of the arm. No need to slide pawl By simply tilting the entire body of the floor treatment machine upside down with respect to the floor and tilting upward so that the bottom of the brush or pad can be seen, it is very easy to attach and detach the brush or pad to the drive shaft. Make it possible to do.
[0009]
Further, according to the means according to claim 1 described in the above (1), a slight play between the drive shaft of the motor side, a boss fitting hole in which is provided on the brush or pad side Komu fitting this Therefore, it is possible to cause the brush or pad to flexibly follow the floor surface while transmitting the rotation of the drive shaft to the brush or pad side.
[0010]
Further, according to the means according to claim 1 described in the above (1), the driving force of the motor side of the drive shaft, transmits reliably brush or pad side inlet portion of the fitting opening is narrowed the degree of play However, since the followability of the brush or pad to the floor surface can be further improved by the distance between the tip of the drive shaft and the inner depth of the fitting hole, which increases the amount of play, some inclination and unevenness of the floor surface The floor or surface of the floor can be cleaned or polished evenly by making the brush or pad follow more flexibly.
[0011]
DETAILED DESCRIPTION OF THE INVENTION
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, an embodiment of a brush or pad mounting device for a floor processing machine according to the present invention will be described with reference to the drawings. FIG. 1 is a partially sectional front view illustrating the configuration of the present invention. Among them, for example, 1 is a floor cleaning machine shown in FIG. 2 of the Japanese Utility Model Laid-Open No. 4-56454, or a floor surface processing machine described in Japanese Patent Application Laid-Open No. 8-280591, etc. 1A indicates a speed reducer, and the entire reference numeral 1R indicates a drive shaft of the motor 1 projecting downward.
[0012]
The drive shaft 1R is fitted with a nut-shaped sleeve 1S formed in a polygonal cross section (usually 5 to 8 angles, preferably 6 angles) as shown in FIG. 3 around the output shaft 1B of the motor 1. 1W is a claw groove formed in the outer peripheral surface on the lower end portion side of the sleeve 1S, and 1T is a sleeve formed on the lower side portion of the claw groove 1W. A tip flange portion 1H having the same polygonal cross section as 1S indicates a distal end insertion portion of the sleeve 1S formed in a tapered shape gradually narrowing toward the lower end portion with the inscribed circle of the tip flange portion 1T as the maximum diameter.
[0013]
In FIG. 3 described above, (a) is a front view of the sleeve 1S, (B) is a front sectional view thereof, (C) is a plan view, (D) is a bottom view, and (E). The figure is a cross-sectional view taken along line Y-Y in the above (b). Inside the sleeve 1S, a shaft hole 1M for inserting the output shaft 1B of the motor and a screw hole 1X for screw fixing are shown. Is provided.
[0014]
In FIG. 1, reference numeral 2 denotes a cleaning brush or pad that is rotated at high speed by the drive shaft 1 </ b> R to clean or polish the floor surface, and 3 is a reinforcing brush attached to the upper surface of the brush or pad 2. The mounting plate 2A is a hole formed in the center of the bottom surface of the brush or pad 2, and the reference numeral 4 indicates a mounting tool generally attached to the center of the top surface of the mounting plate 3. Is provided with a boss 4X in which a fitting hole 4H formed in a polygonal cross section for fitting the above-described drive shaft 1R is recessed upward.
[0015]
As is apparent from the plan view shown in FIG. 4 and the description of the front sectional view shown in FIG. 5, the mounting tool 4 has a mounting hole through which the fixing bolt 4 </ b> D (FIG. 1) is inserted. A boss 4X is formed integrally with the inner center of the ring body 4 'provided with 4A ... via a support arm 4B ..., and the insertion hole 4H having a polygonal cross section for fitting the drive shaft 1R into the boss 4X faces upward. The fitting hole 4H is formed in the same polygonal shape as the drive shaft 1R (usually 5 to 8 angles, preferably 6 angles) so that the rotation of the drive shaft 1R can be transmitted. Has been.
[0016]
The fitting hole 4H is formed slightly larger than the drive shaft 1R so as to have some play between the drive shaft 1R and the rotation of the inlet 4HA portion is ensured. The inner 4HB portion is formed slightly larger so that play can be increased.
[0017]
Further, in the mounting tool 4, the claw piece 7A at the tip is engaged with the claw groove 1W of the drive shaft 1R in the radial direction centering on the boss 4X, and the brush or pad 2 is attached to the drive shaft 1R. A locking claw 7 for integrally attaching to the side is slidably attached in the axial direction (radial direction).
[0018]
In FIGS. 1 and 2, and FIGS. 4 and 5, 6A and 6B constitute the fixture 4 in order to fit the locking claw 7 slidably in the radial direction around the boss 4X. FIG. 1 shows a slide hole provided in alignment with the axis of the thick part 5 projectingly formed on the ring body 4 ′ and the thick part 4X ′ projecting and formed on the outer peripheral surface of the boss 4X. In FIG. 2, 8S repels the locking claw 7 in the left direction in the drawing, and the front claw piece 7A is inserted into the fitting hole 4H of the boss 4X as shown in FIG. A spring acting to engage the 1R claw groove 1W is shown.
[0019]
Further, in the figure, 9 is an operation lever attached downward to the intermediate portion of the locking claw 7 with a set screw 9A, and the lower end side of the operation lever 9 is the space portion 6 of the fixture 4 and a brush or Through the slide groove 3 ′ provided in the mounting plate 3 of the pad 2, the brush protrudes into the hole 2 </ b> A formed in the bottom surface of the pad or pad 2, and the body of the floor surface processing machine is brushed against the floor surface F. Alternatively, if the bottom surface of the pad 2 is tilted slightly upward so that it is directed obliquely upward, the operation lever 9 is slid from the bottom surface side of the brush or pad 2 to resist the spring force of the spring 8S. The entire pawl 7 is slid in a direction in which the claw piece 7A is disengaged from the claw groove 1W of the drive shaft 1R, and conversely, the claw piece 7A is slid in a direction to be locked in the claw groove 1W. Yes.
[0020]
FIG. 6 shows that the polygonal drive shaft 1R of the motor 1 configured as described above is fitted into a fitting hole 4H formed in the same polygonal shape of the fixture 4 attached to the attachment plate 3 of the brush or pad 2. 2, the state in which the fixture 4 is connected to the drive shaft 1R is enlarged by engaging the claw piece 7A of the locking claw 7 with the claw groove 1W of the drive shaft 1R by the elastic force of the spring 8S. In the present invention, since there is play between the drive shaft 1R and the fitting hole 4H in the present invention, as shown in FIG. 2, the brush or pad 2 is free with respect to the drive shaft 1R. It is configured to be able to follow the floor surface F flexibly by changing the angle.
[0021]
Further, since the fitting hole 4H has a narrow inlet 4HA and a wide inner depth 4HB, the rotation of the drive shaft 1R can be reliably transmitted through the narrow inlet 4HA, and a wider inner depth 4HB. In this part, the brush or pad 2 is flexibly rotated at a relatively large angle with respect to the drive shaft 1R to enhance the followability to the floor surface F.
[0022]
Furthermore, according to the present invention, since the distal end insertion portion 1H of the drive shaft 1R is tapered, the drive shaft 1R can be smoothly inserted without hitting the corners of the insertion hole 4H and the drive shaft 1R. The brush or pad 2 can be easily attached to the drive shaft 1R side of the motor 1 by fitting into the hole 4H, and when the brush or pad 2 thus attached is removed from the drive shaft 1R, the machine body of the processing machine If the operation lever 9 is operated from the bottom surface side of the brush or pad 2 with the back facing the floor surface, the engagement claw 7 can be slid backward to disengage the claw groove 1W. The brush or pad 2 can be easily removed.
[0023]
In the above-described embodiment, the drive shaft 1R is configured by fitting the sleeve 1S to the output shaft 1B of the motor 1, but the drive shaft 1R is formed by cutting out the large-diameter output shaft 1B itself. However, the selection is arbitrary.
[0024]
【The invention's effect】
As described above, according to the brush or pad mounting device for a floor surface processing machine according to the present invention, the motor drive shaft is easily fitted into the fitting hole on the brush or pad side, and this fitting is performed with the locking claw. The brush can be engaged, and the removal can be easily performed by operating the operation lever from the bottom side of the brush or pad inclined to the back rather than from the inside of the aircraft. In addition, it has functionality that makes it very easy to perform various tasks such as attaching and detaching pads, and maintenance of the pads. Even if there are irregularities, the brush or pad can flexibly follow the changes in the floor surface, and can exhibit an excellent cleaning effect or polishing effect. Was performed on the surface glazing machine is suitable to Makoto.
[Brief description of the drawings]
FIG. 1 is a front cross-sectional view illustrating a configuration of a brush or pad attachment device for a floor surface processing machine according to the present invention.
FIG. 2 is a front sectional view illustrating a mounting state according to the present invention.
FIGS. 3A and 3B illustrate the structure of a sleeve constituting a drive shaft, wherein FIG. 3A is a front view, FIG. 3B is a front sectional view, FIG. 3C is a plan view, and FIG. The bottom view and (e) are cross-sectional views along line YY in (b).
FIG. 4 is a plan view of a fixture used in the present invention.
FIG. 5 is a front sectional view of the fixture.
FIG. 6 is an enlarged front sectional view showing the main configuration of the present invention.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Motor 1R Drive shaft 1W Claw groove 1H Tip insertion part formed in taper shape 2 Brush or pad 2A hole 3 Mounting plate 3 'Slide groove 4 Mounting tool 4X Boss 4H Insertion hole 4HA Inlet 4HB Inner part 7 Locking claw 7A Claw piece 8S Spring 9 Operation lever

Claims (1)

A floor surface processing machine configured to clean or polish the floor surface by rotating a cleaning brush or pad with a motor,
A driving shaft having a polygonal cross section that is rotated by the motor is protruded downward at the bottom of the floor processing machine, and the driving shaft is fitted on the upper surface of the mounting plate attached to the upper surface of the cleaning brush or pad. A fitting having a boss with a recessed insertion hole having a polygonal cross section is provided, and the fitting is engaged with a claw groove recessed in the outer peripheral surface of the tip of the drive shaft to drive A locking claw that integrates the shaft with the cleaning brush or pad is attached so as to be able to move forward and backward in the radial direction around the boss, leaving the tip of the drive shaft beyond the claw groove, leaving a slightly polygonal cross-section. in state, while the inscribed circle of the polygonal and the maximum diameter, and is formed into a tapered shape whose diameter tapers toward the tip portion,
A spring pressure is always applied to the above-mentioned locking claw so that the claw piece at the tip of the locking claw is engaged with the claw groove of the driving shaft. An operating lever capable of sliding the entire locking claw in the axial direction is attached downward, and the lower end of the operating lever is formed in the center of the bottom surface of the cleaning brush or pad through a slide groove provided in the mounting plate. By projecting into the hole and sliding the operation lever from the hole, the claw piece can slide in the direction away from the claw groove of the drive shaft against the spring pressure. as well as configuration,
The fitting state between the drive shaft and the fitting hole provided in the boss of the fitting that fits the drive shaft is configured to have some play while maintaining the function of transmitting rotation. The play between the drive shaft and the insertion hole is configured such that the entrance side of the insertion hole is narrow and the back side is wide, so that the gap between the root end side of the drive shaft and the entrance side of the insertion hole is And a brush or pad mounting device for a floor treatment machine, characterized in that it is relatively small and relatively large on the front end side of the drive shaft and on the inner back side of the fitting hole .

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