JP2601893Y2 - Cleaning brush attaching / detaching device for floor cleaning machine - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cleaning brush attaching / detaching device for a floor cleaning machine. The present invention relates to a cleaning brush attaching / detaching device for a floor cleaning device, which can transmit torque in both directions without causing a large torque.

[0002]

2. Description of the Related Art As a floor cleaning machine, for example, Japanese Utility Model No.
There is an apparatus disclosed in Japanese Patent Publication No. 21356. FIG. 8 shows a floor cleaning machine disclosed in this publication. In this cleaning machine, the main body 1 of the cleaning machine has wheels 2 for movement,
Inside, a cleaning liquid tank 3 and a sewage recovery tank 4 are provided. A drive shaft 6 that is rotated by a motor 5 is provided at a lower portion of the main body 1. A cleaning brush 7 as a cleaning tool is detachably provided on the drive shaft 6. That is, the brush seat 8 provided on the cleaning brush 7 is provided with the concave portion 20, while the drive shaft 6 is provided with the convex portion 19, and the convex portion 19 and the concave portion 20 are fitted to each other. Are detachable from the drive shaft 6.

The main body 1 is provided with a suction device 10 and a squeegee 11 for collecting sewage is provided so as to be able to move up and down so as to be in contact with the floor surface 9. A light 14 for irradiating the front of the main body is provided at a lower front part of the main body 1. In FIG. 8, reference numeral 16 denotes a handle, reference numeral 17 denotes a rubber skirt covering the periphery of the bottom of the main body 1, and reference numeral 18 denotes a storage battery as a power supply.

When the floor 9 is cleaned, the main body 1 is moved forward while the handle 16 is being pressed, the cleaning liquid is dropped from the cleaning liquid tank 3, and the motor 5 is cleaned.
Cleaning is performed while rubbing the floor surface 9 with the cleaning brush 7 rotated by the swirl, and the sewage generated during the cleaning is operated by the suction device 10 and the sewage recovery tank 4
To absorb. Further, during nighttime work, etc., the floor surface 9 is cleaned by turning on the light 14 for irradiating the front of the main body 1.

[0005]

By the way, as another specific example of the above-mentioned attaching / detaching means of the cleaning brush and the drive shaft,
For example, as disclosed in Japanese Utility Model Laid-Open Publication No. 4-56454, the inner periphery of the central hole of the brush pedestal is formed in a polygonal shape for transmitting torque, and the lower end of the drive shaft also corresponds to this. It is formed in a polygonal shape so as to fit into the polygonal central hole. Further, in order to prevent the cleaning brush and the brush pedestal from dropping from the drive shaft, a concave portion is formed on the drive shaft side so that a lever penetrating the brush pedestal is engaged.

However, in such a structure, the number of parts is large, the shapes of the brush pedestal and the lower end of the drive shaft are complicated, and in order to transmit a large torque, it is necessary to increase these dimensions. The mounting position of the lever may be problematic, and the weight may increase.

As another example of the means for attaching and detaching the brush pedestal and the lower end of the drive shaft, for example,
A plurality of wedge-shaped projections inclined in the same direction are provided, and a recess is formed on the inner peripheral surface of the central hole of the brush seat so as to engage with the wedge-shaped projection.

However, such a structure has a problem that when the brush pedestal is detached from the lower end of the drive shaft, the wedge-shaped projections bite into the recesses of the brush pedestal. When the drive shaft is rotated in one predetermined direction, torque is transmitted from the drive shaft to the brush pedestal. When the drive shaft is rotated in the opposite direction, the engagement between the wedge-shaped projection and the recess of the brush pedestal is made. Since it is released, torque may not be transmitted.

SUMMARY OF THE INVENTION The object of the present invention is to provide a brush pedestal that can be easily attached and detached without using a lever or the like as described above, and requires complicated processing. Torque can be transmitted in both directions without increasing weight.
It is an object of the present invention to provide a cleaning brush attaching / detaching device for a floor cleaning device capable of transmitting a large torque.

[0010]

In order to achieve the above object, the present invention provides a floor cleaning machine which travels and cleans a floor with a rotating cleaning brush. A shaft, a cylindrical fitting member fixed to the lower end of the drive shaft, and a ring-shaped brush pedestal having a hole into which the fitting member is fitted, and a cylindrical cleaning brush fixed to the lower surface. A plurality of key grooves formed in the axial direction on the inner peripheral surface of the hole of the brush pedestal; and a plurality of holes formed between the adjacent key grooves on the inner peripheral surface of the hole of the brush pedestal. A plurality of keys provided on an outer peripheral surface of the fitting member and the adjacent keys are provided so as to fit into the respective key grooves, and protrude from the outer peripheral surface of the fitting member. A plurality of pins urged radially outward of the fitting member, wherein the fitting member is When the pin is fitted in the hole of the pedestal, the pin protrudes radially from the fitting member by the urging force and is fitted into each of the plurality of holes. When the pin is moved downward, the pin is retracted into the fitting member against the urging force so that the brush pedestal comes off.

[0011]

As described above, the torque is transmitted by the key provided on the outer peripheral surface of the fitting member and the key groove formed on the inner peripheral surface of the brush pedestal and into which the key is fitted. Therefore, a large torque is transmitted and torque is transmitted in both directions. Further, the mounting and dismounting of the brush pedestal is performed by a plurality of holes formed in the brush pedestal and a pin which is urged and fitted in the hole and retreats against the urging force. Therefore, the brush pedestal can be removed simply by pushing down the brush pedestal, and the brush pedestal and the cleaning brush do not fall off when the brush is not grounded on the floor. Therefore, maintenance of the cleaner becomes extremely easy. Furthermore, with such a configuration, no complicated processing is required, and no increase in weight is caused.

[0012]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described with reference to the drawings.

FIG. 1 is a perspective view of an apparatus for attaching and detaching a cleaning brush of a floor cleaning apparatus according to an embodiment of the present invention. As shown in FIG. 1, the cleaning brush attachment / detachment device according to the present embodiment generally has a lower end of a drive shaft 6 that is rotated in both left and right directions by a motor 5 in the cleaner body 1 shown in FIG. , A cylindrical fitting member 30 is provided. A cylindrical brush pedestal 40 fitted to the fitting member 30 is provided, and a cleaning brush 50 is fixed to the brush pedestal 40.

First, as shown in FIG.
Is composed of cleaning bristles 51 that can be formed from various materials, and a ring-shaped substrate 52 to which the cleaning bristles 51 are attached. The substrate 52 is provided on the cylindrical portion 41 of the brush base 40.
And the flange portion 42.

Next, as shown in FIGS. 3 and 4, the brush pedestal 40 comprises the cylindrical portion 41 and the flange portion 42 as described above. Three key grooves 43 extending in the axial direction are formed on the inner peripheral surface of the cylindrical portion 41 at regular intervals in the circumferential direction. Further, three holes 44 are formed through the inner peripheral surface of the cylindrical portion 41 at a position intermediate the three key grooves 43. In the present embodiment, the number of the key groove 43 and the number of the holes 44 are three, but the number is not limited thereto, and may be any number. Note that the three holes 45 provided in the flange portion 42 are for fixing the substrate 52 of the cleaning brush 50 described above.

Further, as shown in FIGS. 5, 6 and 7, the fitting member 30 includes a disk-shaped substrate portion 31 to be connected to the drive shaft 6 of the cleaner body 1 and a brush base 40. And a cylindrical tubular portion 32 to be inserted and fitted. A recess 33 and a plurality of holes 34 provided in the substrate portion 31
Are for connecting to the drive shaft. The cylindrical portion 32 is formed with three projecting keys 35 that are fitted into the respective key grooves 43 of the brush pedestal 40 at predetermined intervals in the circumferential direction.

Further, on the cylindrical portion 32 of the fitting member 30, three pin retracting mechanisms 37 are provided between the keys 35 and fitted in the holes 44 of the brush pedestal 40 described above. ing. Three screw holes 37 are formed at predetermined circumferential intervals between the three keys 35, and a shaft portion 38 is screwed into these screw holes 37 and fixed and exposed by a nut 39. I have. A pin 36a is provided radially slidably on the outside of the shaft portion 38 in the radial direction.
6a is urged radially outward by a spring (not shown). Thus, when the brush pedestal 40 is fitted to the fitting member 30, the pin 36a once retreats, and when the brush pedestal 40 comes to the position of the hole 44 of the brush pedestal 40, it is disengaged by the urging force and fits into the hole 44. Combine. During normal cleaning,
The pin 36 a is moved out and held in a state fitted in the hole 44, so that the brush pedestal 40 is prevented from dropping from the fitting member 30. On the other hand, the brush pedestal 40 is
When the brush pedestal 40 is removed from 0, when the brush pedestal 40 is moved downward in the axial direction, the inner peripheral surface of the cylindrical portion 41 of the brush pedestal 40 presses the pin 36a, and the pin 36a is pressed against the urging force. The brush base 40 is retracted into the screw hole 37 of the portion 32, whereby the brush base 40 is detached from the fitting member 30.

In the present embodiment, since the above-described configuration is employed, the following operations and effects are exhibited when the cleaning brush 50 is attached and detached.

When the cleaning brush 50 is mounted, the brush base 40 is fitted to the fitting member 30. At this time, the key groove 43 of the brush pedestal 40 is fitted to the key 35 of the fitting member 30 so as to slide. As described above, since the cleaning brush 50 is mounted by fitting the key 35 and the key groove 43, even if an extremely large torque is transmitted from the drive shaft 6 to the brush pedestal 40 via the fitting member 30. In addition, the torque is reliably transmitted from the drive shaft 6 to the brush pedestal regardless of whether the drive shaft 6 rotates left or right.

When the cleaning brush 50 is mounted, when the brush base 40 is fitted to the fitting member 30, the fitting member 30
When the pin 36a of the brush retreats once and comes to the position of the hole 44 of the brush pedestal 40, the pin 36a
Fits. On the other hand, when the brush pedestal 40 is removed from the fitting member 30, when the brush pedestal 40 is moved downward in the axial direction, the inner peripheral surface of the cylindrical portion 41 of the brush pedestal 40 presses the pin 36a, and the pin 36a Is cylindrical part 3 against urging force
The brush pedestal 40 is disengaged from the fitting member 30 by being retracted into the second screw hole 37. Therefore, the brush pedestal 40 can be removed only by pushing down / finishing the brush pedestal 40, and attachment / detachment of the brush pedestal 40 is extremely easy.

Further, during normal cleaning, the fitting member 30
Of the cleaning brush 50 is not grounded on the floor, so that the brush pedestal 40 is prevented from falling from the fitting member 30 when the cleaning brush 50 is not in contact with the floor. .

Further, in this embodiment, since such a configuration is employed, no complicated processing is required, and no increase in weight is caused.

It should be noted that the present invention is not limited to the above-described embodiment, but can be variously modified.

[0024]

As described above, according to the present invention, torque transmission is performed by the key provided on the outer peripheral surface of the fitting member and the key groove formed on the inner peripheral surface of the brush pedestal and fitted with the key. Has been made by Therefore, a large torque is transmitted and torque is transmitted in both directions. In addition, the attachment and detachment of the brush pedestal, multiple holes formed in the brush pedestal,
The pin is fitted by being urged into the hole and retreats against the urging force. Therefore, the brush pedestal can be removed simply by pushing down the brush pedestal, and the brush pedestal and the cleaning brush do not fall off when the brush is not grounded on the floor. Therefore, maintenance of the cleaner becomes extremely easy. Furthermore, with such a configuration, no complicated processing is required, and no increase in weight is caused.

[Brief description of the drawings]

FIG. 1 is a perspective view of a cleaning brush attaching / detaching device of a floor cleaning machine according to an embodiment of the present invention.

FIG. 2 is a sectional view of a cleaning brush and a brush pedestal mounted on the cleaning brush attaching / detaching device shown in FIG. 1;

FIG. 3 is a plan view of a brush pedestal mounted on the cleaning brush attaching / detaching device shown in FIG. 1;

FIG. 4 is a sectional view taken along lines [4]-[4] in FIG. 3;

FIG. 5 is a plan view of a fitting member attached to the cleaning brush attaching / detaching device shown in FIG. 1;

FIG. 6 is a side view of a fitting member attached to the cleaning brush attaching / detaching device shown in FIG. 1;

FIG. 7 is a sectional view of a fitting member mounted on the cleaning brush attaching / detaching device shown in FIG. 1;

FIG. 8 is a schematic cross-sectional view of a conventional floor cleaning machine.

[Explanation of symbols]

 6 Drive shaft 30 Fitting member 35 Key 36a Pin 40 Brush pedestal 43 Keyway 44 Hole

──────────────────────────────────────────────────続 き Continued on the front page (58) Field surveyed (Int. Cl. ⁶ , DB name) A47L 11/00-11/40 F16B 7/00-7/22 F16D 1/06

Claims (1)

(57) [Scope of request for utility model registration] 1. A floor cleaning device for cleaning a floor surface by running with a rotating cleaning brush, comprising: a driving shaft protruding below a cleaning device main body; and a cylindrical fitting fixed to a lower end of the driving shaft. A mating member, a ring-shaped brush pedestal having a hole into which the fitting member is fitted, and a cylindrical cleaning brush fixed to a lower surface; and an inner peripheral surface of the hole of the brush pedestal, A plurality of key grooves formed; a plurality of holes formed between the adjacent key grooves on an inner peripheral surface of a hole of the brush pedestal; and the fitting so as to fit into each of the key grooves. A plurality of keys provided on the outer peripheral surface of the mating member, provided between the adjacent keys, and urged radially outward of the fitting member so as to protrude from the outer peripheral surface of the fitting member. A plurality of pins, and when the fitting member is fitted into the hole of the brush pedestal, The pin projects radially from the fitting member and is fitted into each of the plurality of holes. On the other hand, when the brush pedestal is moved downward with respect to the fitting member, the pin exerts an urging force. A cleaning brush attaching / detaching device for a floor cleaning machine, wherein the brush pedestal is disengaged by retreating into the fitting member.