JP2002065538A - Mounting device for brush or pad for floor face treating machine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a mounting device for a brush or a pad for a floor face treating machine devised to allow extremely smooth fitting between a polygonally-formed drive shaft of a motor and a fit-in hole on the brush or pad side without being hindered by the angle of the shaft or the hole, allow easy attaching and detaching operation of the brush or pad to and from the drive shaft and allow the brush or pad to flexibly follow a floor face. SOLUTION: The drive shaft 1R of a motor 1 for rotating the brush or pad 2 for the floor treating machine is formed in polygonal shape, and the fit-in hole 4H on the fixture 4 side of the fitted brush or pad 2 is also formed in the same polygonal shape. Slight play is provided between the drive shaft 1R and the fit-in hole 4H. The tip of the drive shaft 1R is formed as a tapered tip insertion part 1H, and the peripheral surface of the drive shaft 1R is provided with a claw groove 1W to which a locking claw 7 is locked.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a floor treatment machine configured to clean or polish a floor by rotating a cleaning brush or pad at a high speed with a motor. TECHNICAL FIELD The present invention relates to a brush or pad mounting device for a floor treatment machine, which can mount a cleaning brush or pad on a drive shaft of a motor.

[0002]

2. Description of the Related Art With respect to the above-mentioned brush or pad mounting apparatus, as described in, for example, Japanese Utility Model Laid-Open Publication No. 4-56454, the same polygonal fitting hole is formed with respect to a polygonal motor drive shaft. The boss is attached to the upper surface of the brush or pad, the drive shaft is inserted into the fitting hole, and the claw portion formed at the tip of the lever provided to be freely inserted into and removed from the boss is attached to the outer peripheral surface of the drive shaft. An attachment device is used in which a brush or a pad is integrally attached to a drive shaft by being inserted into and engaged with a step (groove) formed in the drive shaft.

[0003]

In the conventional mounting device constructed as described above, a motor drive shaft and a fitting hole for fitting the motor drive shaft are formed in a relative polygonal shape, so that the drive shaft is engaged with the polygonal shape. Is transmitted to the brush or pad side, and the brush or pad can be rotated at a high speed by a motor to clean or polish the bottom surface without any trouble. However, as described above, There is a problem that the drive shaft and the insertion hole having a polygonal cross section are difficult to be fitted because the drive shaft is fitted into the insertion hole at an angle.

In addition, when the brush or the pad is attached to or detached from the drive shaft, a locking operation lever is provided on the upper surface of the brush or the pad so as to be movable back and forth with respect to the drive shaft. Because the brush or pad is made in a considerably large disk shape, it is difficult for the hand to easily reach the position of the operation lever when operating the lever, and because the brush or pad hits the arm and it is difficult to work, There is a problem that the attaching / detaching work of the brush or pad becomes very complicated,
Since the brush or pad is attached by fitting the drive shaft and the fitting hole formed in the polygonal shape, there is no play between the drive shaft and the fitting hole. There is also a problem in that uneven cleaning and polishing may occur on the floor surface because the floor cannot be flexibly followed with respect to inclination, unevenness, and the like.

Accordingly, a technical problem of the present invention is to make it possible to fit a drive shaft of a motor formed in a polygonal shape and a fitting hole on a brush or pad side very smoothly without disturbing the corner of the shaft or the hole. And a brush or pad for a floor treatment machine designed so that the brush or pad can be easily attached to and detached from the drive shaft, and the brush or pad flexibly follows the floor. It is an object of the present invention to provide a pad mounting device.

[0006]

Means for Solving the Problems (1) In order to solve the above-mentioned technical problems, in the present invention, the floor is rotated by rotating a cleaning brush or a pad with a motor. A floor treatment machine configured to be cleaned or polished, wherein a drive shaft having a polygonal cross section rotated by the motor projects downward from the bottom of the floor treatment machine, while the cleaning brush or pad is provided. On the top of
A mounting tool having a concave fitting hole having a polygonal cross section into which the driving shaft can be fitted is provided, and the mounting tool is engaged with a claw groove formed in the outer peripheral surface of the distal end portion of the driving shaft. Then, a locking claw that integrates the drive shaft and the cleaning brush or the pad is attached so as to be able to advance and retreat in the axial direction, and a tip end of the drive shaft ahead of the claw groove is slightly left in a polygonal cross section. Thus, the polygonal inscribed circle is configured to have a maximum diameter and to be formed in a tapered shape in which the diameter gradually decreases toward the tip.

(2) In the present invention, as described in the second aspect, a spring pressure is applied to the locking claw in a direction in which the tip of the locking claw always engages with the claw groove of the drive shaft. On the other hand, an operating lever capable of sliding the entire engaging claw in the axial direction against the spring pressure is connected to the engaging claw, and the tip of the operating lever is attached to the center of the bottom surface of the cleaning brush or pad. It is configured such that the operating lever can be operated from the hole portion facing the hole portion formed in the hole.

(3) In the present invention, according to the third aspect of the present invention, the function of transmitting rotation to the fitting state between the drive shaft and the fitting hole of the fitting for fitting the drive shaft is provided. It is configured to have some play while maintaining it.

(4) According to the present invention, the play between the drive shaft and the fitting hole is made narrower on the entrance side of the fitting hole and wider on the rear side. By doing, there is little between the root end side of the drive shaft and the entrance side of the insertion hole,
Further, the drive shaft is configured to be relatively large on the distal end side and on the inner side of the fitting hole.

According to the first aspect of the present invention, the drive shaft of the polygonal motor is fitted into the fitting hole of the brush or the pad-side mounting tool also formed in the polygonal shape. Since the tip of the drive shaft is formed in a tapered shape when mounting the drive shaft, the drive shaft is extremely easily and smoothly fitted into the fitting hole without being disturbed by the corners of the drive shaft and the fitting hole. In addition, the brush or pad can be quickly and quickly attached to the drive shaft in a short time, so that replacement or maintenance of the brush or pad can be performed extremely easily.

According to the means according to claim 2 described in the above (2), the tip claw is engaged with the claw groove of the drive shaft by spring pressure, so that it is fitted into the fitting hole on the brush or pad side. The engaging claw for maintaining the fitted state of the drive shaft is slid in the axial direction by manually operating an operating lever facing a hole formed in the bottom surface of the brush or the pad, thereby sliding the claw groove. Can be disengaged, so there is no need to slide the locking claw by screwing the arm into the upper surface of a large brush or pad, and the floor treatment machine is slightly turned upside down with respect to the floor. By simply tilting the brush or pad slightly upward, the attachment or detachment of the brush or pad with respect to the drive shaft can be performed very easily.

According to the means according to claim 3 described in the above (3), there is a slight play between the drive shaft on the motor side and the insertion hole on the brush or pad side into which the drive shaft is inserted. The brush or the pad can flexibly follow the floor while transmitting the rotation of the drive shaft to the brush or the pad side.

According to the means according to claim 4 described in (4) above, the driving force of the drive shaft on the motor side is reliably transmitted to the brush or pad side at the entrance portion of the fitting port in which the degree of play is reduced. The distance between the tip of the drive shaft and the inner depth of the fitting hole, which increases the degree of play while transmitting, can further enhance the ability of the brush or pad to follow the floor surface, so that the floor surface is slightly inclined. The brush or the pad can be made to follow the unevenness and unevenness more flexibly so that the floor surface can be washed or polished without unevenness.

[0014]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a cross-sectional view of an embodiment of a brush or pad mounting apparatus for a floor treatment machine according to the present invention. FIG. 2 is a front view, in which 1 is described in, for example, the floor cleaning machine shown in FIG. 2 of Japanese Utility Model Application Laid-Open No. 4-56454 or Japanese Patent Application Laid-Open No. 8-280591. A brush or pad rotation motor provided in a floor treatment machine (both not shown), 1A indicates a speed reducer,
Further, what is indicated by the reference numeral 1R as a whole is a drive shaft of the motor 1 projecting downward.

The drive shaft 1R is an output shaft 1B of the motor 1.
A nut-shaped sleeve 1S formed in a polygonal cross section (usually 5 to 8 corners, preferably hexagonal) as shown in FIG. 1W is a claw groove recessed in the outer peripheral surface on the lower end side of the sleeve 1S, 1T is a tip flange having the same polygonal cross section as the sleeve 1S formed on the lower side of the claw groove 1W, 1H Indicates a distal end insertion portion of the sleeve 1S formed in a tapered shape with the inscribed circle of the distal end flange 1T being the maximum diameter and gradually tapering toward the lower end.

In FIG. 3, (a) is a front view of the sleeve 1S, (b) is a front sectional view thereof, and (c).
The figure is a plan view, (d) is a bottom view, (e) is the above (b)
FIG. 5 is a cross-sectional view taken along the line Y-Y in the figure, and a shaft hole 1M for inserting the output shaft 1B of the motor and a screw hole 1X for screwing are provided inside the sleeve 1S.

In FIG. 1, reference numeral 2 denotes the drive shaft 1R.
Cleaning brush or pad for rotating or cleaning the floor surface at a high speed by rotating the brush or pad 2;
The mounting plate for reinforcement mounted on the upper surface of the brush or pad 2A is a hole recessed at the center of the bottom surface of the brush or pad 2, and the reference numeral 4 generally indicates the mounting plate at the center of the upper surface of the mounting plate 3. At the center of the fixture 4, the drive shaft 1 described above is attached.
A boss 4X is provided in which a fitting hole 4H formed in a polygonal cross section for fitting R is concaved upward.

The mounting fixture 4 is a plan view shown in FIG.
In addition, as is apparent from the description of the front sectional view shown in FIG. 5, a support is provided at the center of the inside of a ring body 4 'provided with mounting holes 4A for inserting fixing bolts 4D (FIG. 1) on the outer peripheral surface. The boss 4X is integrally formed via the arms 4B.
Insertion hole 4 having polygonal cross section for inserting drive shaft 1R into X
H is recessed upward, and the fitting hole 4H has the same polygonal cross section as the drive shaft 1R (usually 5 to 8 angles, preferably 6 angles, so as to transmit the rotation of the drive shaft 1R. )
Is formed.

The fitting hole 4H is connected to the drive shaft 1R.
Is slightly larger than the drive shaft 1R so that there is some play between the drive shaft 1R and the inlet 4H.
The portion A is formed slightly narrower so that rotation can be transmitted reliably, while the inner portion 4HB is formed slightly larger so as to allow a large play.

Further, the boss 4X is attached to the mounting member 4.
The engaging claw 7 for engaging the claw 7A at the distal end with the claw groove 1W of the drive shaft 1R in the radiation direction centering on the drive shaft 1R to integrally attach the brush or pad 2 to the drive shaft 1R side,
It is slidably mounted in the axial direction (radiation direction).

In FIGS. 1 and 2 and FIGS. 4 and 5, 6A and 6B are mounted on a ring 4 'constituting the mounting member 4 in order to slidably fit the locking claw 7 therein. Slide holes formed by aligning the axis with the thick portion 5 formed so as to protrude and the thick portion 4X 'also formed so as to protrude from the outer peripheral surface of the boss 4X are shown in FIGS. 1 and 2. 8S repels the locking claw 7 to the left in the drawing, and the tip claw piece 7A
2 shows a spring acting to engage with the claw groove 1W of the drive shaft 1R as shown in FIG.

Further, in the drawing, reference numeral 9 denotes an operation lever which is downwardly attached to an intermediate portion of the locking claw 7 by a set screw 9A, and a lower end side of the operation lever 9 has a space portion 6 of the mounting member 4, and Through the slide groove 3 'provided in the mounting plate 3 of the brush or pad 2, facing the inside of the hole 2A formed in the bottom surface of the brush or pad 2, and moving the machine of the floor treatment machine to the floor F. If the bottom surface of the brush or pad 2 is slightly inclined upward so as to face obliquely upward, the operation lever 9 is slid from the bottom surface side of the brush or pad 2 to resist the elastic force of the spring 8S. The entire locking claw 7 can be slid in the direction in which the claw piece 7A is disengaged from the claw groove 1W of the drive shaft 1R, or conversely, can be slid in the direction in which the claw piece 7A is locked in the claw groove 1W. ing.

FIG. 6 shows a polygonal drive shaft 1R of the motor 1 constructed as described above,
The fitting 4A is fitted in a fitting hole 4H also formed in a polygonal shape, and as shown in FIG. 2, the claw 7A of the locking claw 7 is clawed by the elastic force of the spring 8S. Groove 1W
FIG. 5 is an enlarged cross-sectional view showing a state where the attachment 4 is connected to the drive shaft 1R by engaging with the drive shaft 1R. In the present invention, there is play between the drive shaft 1R and the fitting hole 4H. For this reason, as shown in FIG.
, And can freely follow the floor surface F.

The fitting hole 4H has an inlet 4HA.
, The rotation of the drive shaft 1R can be reliably transmitted at the narrow entrance 4HA, and a brush or pad is formed with respect to the drive shaft 1R at the wide interior 4HB. 2 is flexibly opened at a relatively large angle to improve the ability to follow the floor surface F.

Further, according to the present invention, since the distal end insertion portion 1H of the drive shaft 1R is formed in a tapered shape, the drive shaft 1R can be fixed without contact between the fitting hole 4H and the drive shaft 1R.
When the brush or pad 2 can be easily attached to the drive shaft 1R side of the motor 1 by smoothly fitting the R into the fitting hole 4H, and the brush or pad 2 thus attached is removed from the drive shaft 1R. When the operation unit 9 is operated from the bottom surface of the brush or pad 2 with the body of the processing machine slightly turned on the floor surface, the locking claw 7 is slid backward to disengage the claw groove 1W. As a result, the brush or pad 2 can be easily removed.

In the above-described embodiment, the drive shaft 1R is formed by fitting the sleeve 1S to the output shaft 1B of the motor 1. However, the drive shaft 1R is formed by cutting the large-diameter output shaft 1B itself. May be made, and the selection is optional.

[0027]

As described above, according to the brush or pad mounting apparatus for a floor surface treatment machine according to the present invention, the drive shaft of the motor can be easily fitted into the fitting hole on the brush or pad side.
This fitting state can be engaged with the locking claw,
It can be easily removed by operating the operating lever from the bottom of the brush or pad inclined upwards, not from the inside of the fuselage. In addition to the functionality that can be easily performed, the brush or pad is attached to the drive shaft of the motor with play, so that even if there is some inclination or irregularity on the floor, A brush or pad that can flexibly follow changes and can exert an excellent cleaning effect or polishing effect. It can be applied to various types of floor cleaning machines and floor polishers, and is ideally suited It is.

[Brief description of the drawings]

FIG. 1 is a front sectional view illustrating the configuration of a brush or pad mounting device for a floor treatment machine according to the present invention.

FIG. 2 is a front sectional view illustrating an attached state according to the present invention.

FIGS. 3A and 3B illustrate a structure of a sleeve constituting a drive shaft, wherein FIG. 3A is a front view, FIG.
(C) is a plan view, (d) is a bottom view, and (e) is a cross-sectional view taken 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 attachment.

FIG. 6 is an enlarged front sectional view showing the configuration of a main part of the present invention.

[Explanation of symbols]

 Reference Signs List 1 motor 1R drive shaft 1W claw groove 1H tapered tip insertion portion 2 brush or pad 2A hole 3 mounting plate 4 mounting tool 4X boss 4H insertion hole 4HA inlet 4HB inner depth 7 locking claw 7A claw piece 8S spring 9 Operation lever

Claims (4)

[Claims] 1. A floor treatment machine configured to clean or polish a floor surface by rotating a cleaning brush or a pad with a motor, wherein the floor is rotated by the motor on the bottom of the floor treatment machine. A mounting tool having a polygonal cross-section fitting hole into which the above-described driving shaft can be fitted is provided on the upper surface of the cleaning brush or pad while the polygonal cross-section driving shaft projects downward. The attachment is engaged with a claw groove formed in the outer peripheral surface of the distal end portion of the drive shaft, and a locking claw that integrates the drive shaft with the cleaning brush or pad is moved forward and backward in the axial direction. At the same time as mounting freely, the tip of the drive shaft ahead of the above-mentioned claw groove, while leaving a little polygonal cross section, the maximum diameter of the inscribed circle of this polygonal shape, and gradually the diameter toward the tip It is characterized by being formed in a tapered shape that becomes thinner That the floor treating machine brush or pad attachment device. 2. A spring pressure resiliently acting in a direction in which a tip of the locking claw is always engaged with a claw groove of the drive shaft is applied to the locking claw, and the locking claw is engaged against the spring pressure. An operation lever slidable in the axial direction is provided continuously with the entire pawl, and the tip of the operation lever faces a hole recessed in the center of the bottom surface of the cleaning brush or pad. 2. The apparatus according to claim 1, wherein the operation lever can be operated from the hole. 3. A structure in which a slight play is provided while maintaining the function of transmitting rotation between the drive shaft and the fitting hole of the fitting for fitting the drive shaft. The mounting device for a brush or pad for a floor surface treatment machine according to claim 1 or 2, wherein: 4. The play between the drive shaft and the fitting hole is configured such that the entrance side of the fitting hole is narrow and the back side is wide, so that the root end side of the drive shaft and the fitting hole are formed. Less between the entrances,
4. The brush or pad mounting device for a floor surface treatment machine according to claim 3, wherein a relatively large number is provided on the distal end side of the drive shaft and the inner side of the fitting hole.