JPH08280592A - Fitting device for brush or pad for floor surface treating machine - Google Patents

Abstract

PURPOSE: To fit or remove a brush or a pad very simply in one simple operation without needing to make the direction of the brush or the pad match with the direction of a drive shaft and without requiring to lift or lower a motor or the drive shaft at the time of fitting when fitting the brush or the pad to the drive shaft of a floor surface processor. CONSTITUTION: The right and left hook projections 15, 15 protruding tip sections 15T, 15T from both sides via the elastic force of a spring 14 are provided on a coupling hole 12 on a brush or pad 11 side inserted with the drive shaft 10 of a motor on a floor surface processor side. The tip sections 15T, 15T are retained to the coupling grooves 10a of the drive shaft 10 to maintain the fitted state.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a floor cleaning machine for cleaning or polishing a floor surface while rotating a brush or a pad with a motor, or a floor polishing machine (hereinafter collectively referred to as floor surface treatment). The present invention relates to a mounting device for mounting a brush or a pad on a drive shaft rotated by a motor.

[0002]

2. Description of the Related Art In a floor surface treating machine for cleaning or polishing a floor surface by rotating a brush or pad, the brush or pad must be replaced or repaired in order to replace or repair the brush or pad due to wear or damage. It is necessary to configure the pad so that it can be attached to and detached from the drive shaft on the rotation motor side.

[0003] Therefore, conventionally, for example, the actual fair 3-2757.
As described in Japanese Patent Publication No. 1, a connecting plate and a dovetail groove having a substantially dovetail-shaped cross section are provided on both the drive shaft side and the brush or pad side, and the fitting state of these connecting plate and dovetail groove is tightened. A mounting device having a lock lever, or, as described in Japanese Utility Model Laid-Open No. 4-56454, a brush or pad is provided with a polygonal shaft hole, and a drive shaft fitted in this shaft hole is also the same. A mounting device having a polygonal shape and a retaining lever that engages with a step of the drive shaft on the shaft hole side has been considered.

[0004]

However, in the case of the former mounting device, since the mounting device is set at a certain angular position, the brush or pad is always oriented in the direction of the drive shaft during mounting. However, since the lock lever has to be operated within the narrow space of the floor surface treatment machine, there is a problem that the installation work is very troublesome and takes a lot of time.

In addition, in the case of the latter mounting device described above, it is necessary to move the motor up and down together with the drive shaft when installing the brush or pad. Therefore, the motor and the drive shaft are constructed to be movable up and down. On the other hand, there is a problem in that the floor surface processing machine must be provided with a dedicated lifting mechanism, which complicates the structure of the floor surface processing machine and increases the cost.

Therefore, the technical problem of the present invention is that it is not necessary to keep the orientation of the brush or pad constant when mounting it on the floor surface treatment machine, and it is not necessary to raise or lower the motor or the drive shaft at the time of mounting. Alternatively, the pad can be attached to and removed from the drive shaft on the motor side very easily with one touch.

[0007]

[Means for Solving the Problems] Means taken in the present invention for solving the above technical problems are as follows.

In a floor surface treating machine for cleaning or polishing the floor surface by rotating a brush or a pad with a motor,

(1) A drive shaft having a polygonal cross-section rotated by the above-mentioned motor is projected downward at the bottom of the floor surface treatment machine, while the above-mentioned drive shaft can be fitted onto the upper surface of the brush or pad. A fitting hole having a polygonal cross section is provided, and one side wall of the fitting hole is opened to the outside so that the drive shaft can be laterally fitted. Similarly, the drive shaft is provided on the upper surface of the brush or pad. The approach leading to the fitting hole is recessed, and the left and right inner side walls of the fitting hole are always supported by springs, and the left and right locking projections are elastically supported so that the tip ends project into the fitting hole. And the engaging groove to be engaged with the tip end portion of each of the locking projections is formed on each outer surface of the drive shaft.

(2) On the upper surface of the brush or pad, a leaf spring lock spring, in which leg pieces facing each other on both sides are connected in series, is attached so as to be capable of advancing and retreating. The long holes are provided, the root ends of the left and right locking projections are slidably fitted into the long holes, and the upper surface of the brush or pad pushes the lock spring as a whole. Providing a groove-like or projection-like engaging portion that locks the left and right locking protrusions so as to project toward the fitting holes by engaging the distal end portions of the leg pieces.

(3) Rotating levers are attached to the left and right of the upper surface of the brush or pad, and the locking protrusions formed at the tips of these rotating levers are configured to be retractable toward the fitting holes. The root ends of the left and right rotating levers are pivotally supported on both sides of an operation lever attached to a brush or a pad so as to move back and forth, and an operation lever is always provided between the operation lever and the brush or the pad. Interpose a spring that elastically supports the left and right rotating levers so that each locking protrusion projects toward the fitting hole.

(4) The drive shaft rotated by the motor is formed into a hexagonal prism, and each of the surfaces of these hexagonal prisms is provided with an engaging groove for engaging the tip end portion of the locking protrusion, and Make a hole in the center of the drive shaft to insert the washing water injection hose.

(5) On the upper surface of the brush or pad, an approach for fitting the drive shaft is formed which leads to the opening of the fitting hole, and the lateral width of this approach is provided on the outer peripheral edge of the brush or pad. It should be constructed so that it gradually widens as it approaches the entrance, and a protrusion is provided on the inner wall of either of the approaches to orient the drive shaft that is being inserted.

[0014]

The means described in (1) to (5) above operates as follows.

According to the means described in (1) above, the brush or pad placed on the floor is moved laterally,
When the drive shaft on the floor processing machine side is fitted into the fitting hole through the opening opened to the outside along the approach that is recessed in the upper surface of the brush or pad, the left and right locking protrusions cause the spring The brush or pad is locked by engaging force with engaging grooves formed on both sides of the drive shaft so that the brush or pad does not disengage in the lateral direction of the drive shaft. It can be attached to the drive shaft on one side with one touch, and when attaching the brush or pad,
Since it is not necessary to arrange these directions according to the direction of the drive shaft or to move the drive shaft up and down, it is possible to attach the brush or the pad very easily and surely.

According to the means described in the above (2), when the drive shaft on the floor surface processing machine side is fitted into the fitting hole of the brush or the pad and the entire lock spring is pushed, each leg is pushed. The tip of the piece engages with the engaging portion to lock the left and right locking protrusions into the fitting hole, that is, to engage with the engaging groove of the drive shaft. The pad can be securely attached to the drive shaft of the floor surface treatment machine, and when the lock spring is pulled in the opposite direction, the lock state will be released, so the brush or pad can be easily attached to the drive shaft. Allows to be removed.

According to the means described in the above (3), when the operation lever is pressed against the spring, the left and right turning levers are opened to rotate the locking protrusion outward from the fitting hole. In this state, if the drive shaft of the floor surface treatment machine is fitted into the fitting hole and the pressing of the operating lever is released, the left and right rotating levers are rotated inward again by the springs and the left and right engaging levers are moved. Since the stopper is projected into the fitting hole and the tip of the stopper is engaged with the engaging groove of the drive shaft, the brush or pad can be easily attached to the drive shaft side. The pressing action against the spring again allows the engagement of the locking projection to be disengaged and the brush or pad to be easily removed from the drive shaft.

According to the means described in (4) above, since the drive shaft is formed as a hexagonal prism, the drive shaft can be fitted in the fitting hole of the brush or the pad in a stable state. However, since the engaging grooves are provided on the six surfaces of the drive shaft, the tip of the locking protrusion is engaged with each other even if the drive shaft is inserted into the fitting hole at any angle (direction). Since it can be engaged with the mating groove, it is not necessary to adjust the orientation of the brush or pad when installing it, and the brush or pad can be installed extremely easily. Since there is a hole for inserting the hose,
It is not necessary to dispose a separate water injection hose for cleaning water, and it is possible to insert the water injection hose into the hole of this drive shaft and supply the cleaning water to the brush or pad.

According to the means described in the above (5), when the brush or the pad is attached to the drive shaft, the drive shaft can be smoothly guided into the fitting hole along the approach in which the inlet is widely opened. On the other hand, if the angle of the drive shaft to be inserted into the approach is different from the angle of the fitting hole, the protrusion provided on one side of the approach hits the corner of the drive shaft and aligns the direction with the direction of the fitting hole. Since the drive shaft is rotated at an angle, it is possible to fit the drive shaft in the fitting hole with the angle always matched.

As described above, the above-mentioned technical problems can be solved by the above-mentioned means, and the problems of the above-mentioned conventional techniques can be solved.

[0021]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT A preferred embodiment of the brush or pad mounting device for a floor surface treatment machine according to the present invention will be described in detail below with reference to the accompanying drawings.

FIG. 1 shows a state in which the mounting apparatus according to the present invention is applied to a floor cleaning machine 1 which is an example of a floor processing machine. In the figure, 2 is rotated by a traveling motor 2M. Wheels, 3 are driving handles, 4 is a brush rotation motor mounted inside the floor washer 1 by a bracket 5, and RG is a speed reducer for decelerating the rotation of this motor 4 and transmitting it to the brush or pad 11 side. Is.

Further, in the figure, 6 is a brush rotary chamber having a rubber skirt attached to the lower side, 4P is a drive pinion of the motor 4, and 10 is a brush or pad 11 provided at the center of the bottom surface of the reduction gear RG. Drive shaft, 9 is a tank of cleaning water mounted on the floor cleaning machine 1, and the cleaning water in the tank 9 is a water injection hose inserted through the center of the speed reducer RG and the drive shaft 10 by the pump action of the pump 9T. It is constructed such that water is poured from the lower portion 9Ha thereof through 9H to the central portion of the brush or pad 11.

Further, 7a is a squeegee for sucking dirty water provided at the rear portion of the floor cleaning machine 1, 7 is a hose for feeding the dirty water absorbed by the squeegee 7a to a dirty water tank 8 mounted on the floor cleaning machine 1, and 8T is a dirty water. A drainage hose 12 is a fitting hole for the drive shaft 10 formed in the center of the upper surface of the brush or pad 11.

Next, a specific structure of the mounting device according to the present invention will be described based on the description of FIGS. 2 to 9.

FIG. 2 is a plan view illustrating the configuration of the present invention described in claims 1 and 2 described above, FIG. 3 is a cross-sectional view taken along the line AA, and FIG. 4 is the floor cleaning machine 1 side. FIG. 5 is a partial cross-sectional plan view of the drive shaft 10 fitted in the fitting hole 12 of the brush or pad 11, and FIG. 5 is a cross-sectional view taken along line BB thereof. 12T is an outer wall configured to surround the fitting hole 12, and 12H is a hole formed in the bottom surface of the fitting hole 12 for inserting the lower portion 9Ha of the water injection hose 9H described above.

12S is the upper surface 11 of the brush or pad 11.
An approach for the fitting hole 12 recessed in X, comprising:
Reference numerals 12a and 12a denote the left and right outer walls of the approach 12S configured to gradually widen the frontage as approaching the outer end portion, and 12b is the inlet of the approach 12S formed at the outer peripheral edge of the brush or pad 11. The constructed approach 12S is continuously formed in the opening 12 'which is open to the outside of the fitting hole 12, and the fitting hole 12 is entirely formed as shown in FIG.
The drive shaft 10 formed in a hexagonal prism as described in (1) is formed in the same prismatic shape as this so that the drive shaft 10 can be fitted therein.

In FIGS. 2 and 4 and FIG. 8, 10
a is an engaging groove formed in each of the six surfaces of the drive shaft 10 formed in a hexagonal prism shape, and 10b is provided in the center of the drive shaft 10 for inserting the lower side portion 9Ha of the water injection hose 9H described above. The through hole 13 is a projection protruding from the inner surface of one outer wall 12a that constitutes the approach 12S. The projection 13 is inserted into the approach 12S from the inlet 12b as shown in FIG. The driving shaft 10 is rotated like a phantom line so that the driving shaft 10 can be fitted into the fitting hole 12 by hitting one ridge of the ridge 10, and the direction thereof is adjusted.

Reference numerals 15 and 15 denote the end portions 15T and 15T of the fitting hole 12 so that the tip portions 15T and 15T of the fitting hole 12 can be projected and retracted from the left and right sides of the fitting hole 12 toward the inside thereof. The pin-shaped locking protrusions are attached to the left and right sides so that they can move back and forth. The entire left and right leg pieces 14a, 14a, which are opposed to each other, are connected in series to form a generally gate-like shape (downward U-shape). A lock spring having a leaf spring structure, which is freely movable (sliding operation) within the upper surface portion 11X of the brush or pad 11 with the proximal side protruding to the outside of the brush or pad 11. Installed on.

Further, at the tip end portion 14b of each of the leg pieces 14a, a long hole 14c into which a small diameter portion 15b formed at the root end portion 15a of the locking protrusion 15 having a pin structure is slidably fitted. And a fitting hole 14d for the locking projection 15 is formed at the tip of this elongated hole 14c.

11a, 11a are wide guide grooves, 11d, 11d formed on the upper surface 11X of the brush or pad 11 for slidingly fitting the left and right leg pieces 14a, 14a of the lock spring 14 described above. These are lock grooves (engagement portions) with a narrow width that are continuously provided at the tips of the respective guide grooves 11a, 11a, and both leg pieces 14a, 14 as shown in FIG.
When the tip portions 14b, 14b of a are located inside the guide grooves 11a, 11a, the tip portions 15T, 15T are projected into the fitting hole 12 by the elastic force of the leg pieces 14a, 14a. The locking protrusions 15 and 15 are
The 5T is elastically supported so that it can be retracted into and from the fitting hole 12.

However, when the entire lock spring 14 is pushed toward the center, the above-mentioned lock groove is formed in a state where the tip portions 14b, 14b of the leg pieces 14a, 14a are respectively bent inward as shown in FIG. Since the locking protrusions 15 and 15 are inserted into 11d and 11d, the locking protrusions 15 and 15 have their tip portions 15T and 15d.
For a mechanism to lock T in a state of protruding into the fitting hole 12, that is, a state in which the respective tip portions 15T, 15T are engaged with the left and right engaging grooves 10a, 10a of the drive shaft 10 fitted therein. Made of

The tip portions 1 of the leg pieces 14a, 14a are provided on the upper surface portion 11X in place of the lock grooves 11d, 11d.
4b. In some cases, a protrusion-shaped engaging portion that locks 14b in a bent state is provided.

According to the mounting device of the present invention described above, FIG.
In order to attach the brush or pad 11 which has been removed as described above to the drive shaft 10 of the floor cleaning machine 1, the brush 12 or the pad 11 placed on the floor is attached to the drive shaft 1 by the approach 12S.
When the floor washer 1 is moved laterally toward the bottom surface of the floor washer 0, the drive shaft 10 passes through the approach 12S and the fitting hole 12
And the tip portions 15T, 15T of the left and right locking protrusions 15, 15 are inserted into the left and right engaging grooves 10a, 10a of the drive shaft 10 by the elastic action of the lock spring 14, It will be stopped.

Next, when the lock spring 14 is pushed downward in the drawing, the tip portions 14b, 14b of the leg pieces 14a, 14a are locked by the lock groove 11 as shown in FIG.
Since it is inserted in d and 11d in a bent state,
The locking protrusions 15 and 15 are locked in a protruding state so that the brush or pad 11 can be attached to the drive shaft 10 side, and the brush or pad 11 can be axially and laterally relative to the drive shaft 10. It can be prevented from coming off.

In order to remove the brush or pad 11 attached as described above, the pushed pushing lock spring 14 is returned to the state shown in FIG. 2, and the tip end portion 14b of each leg 14a is locked in the lock groove 11d. The brush or pad 11 can be freely removed from the drive shaft 10 because it is free from the drive shaft 10.

Next, the structure of the present invention described in claim 3 will be described based on the description of FIGS. 9 and 10. The same members as those of the attachment device described in FIGS. 2 to 8 have the same reference numerals. The detailed description thereof will be omitted.

FIG. 9 is a plan view of the entire mounting device, and FIG. 10 is a sectional view taken along the line D-D thereof. In these drawings, 20 and 20 are the upper surface portion 11X of the brush or pad 11.
The shafts 21, 21 inside the housing grooves 11e, 11e formed in
The left and right rotary levers are rotatably attached to the fitting holes 12 formed at the centers of the brushes or pads 11 at the tips of the rotary levers 20 and 20, respectively. Hook structure locking protrusions 20 that appear on both sides
a and 20a are projected.

Reference numeral 22 denotes the upper surface portion 11 of the brush or pad 11.
Operation levers 22a, 22a attached to X so as to be capable of advancing and retracting (sliding) with respect to the fitting hole 12 are left and right operation legs connected to the operation lever 22 in a bifurcated manner. Actuating shaft 22 provided at the tips of legs 22a, 22a
b and 22b are fitted into the long holes 20c and 20c formed in the root ends 20b and 20b of the left and right turning levers 20 and 20 described above, and the operation lever 22 is fitted from the state shown in FIG. When pushed in the direction of the hole 12, the left and right turning levers 2
Nos. 0 and 20 rotate outwardly, and the locking protrusion 20 at the tip
It is constructed such that a and 20a are drawn from the inside of the fitting hole 12 to the outside.

Reference numeral 23 denotes a protrusion 22c protruding inside the operation lever 22 and the outer wall 12 of the fitting hole 12 described above.
A coil-shaped compression spring interposed between the protrusions 12e protruding from the T, and 23G is a guide in which the spring 23 is fitted. The spring 23 configured in this manner has the operating lever 22 always shown in FIG. And is elastically ejected in a direction away from the fitting hole 12 to elastically support the locking protrusions 20a, 20a of the left and right rotating levers 20, 20 in a state of protruding inside the fitting hole 12. .

Therefore, according to the above-described mounting device of the present invention, as shown in FIG. 9, the locking protrusions 20a, 20a of the left and right turning levers 20, 20 are generated by the elastic force of the spring 23.
To the left and right sides in the fitting hole 12,
By engaging the engaging grooves 10a, 10a of No. 0, the brush or pad 11 can be attached to the drive shaft 10 of the floor cleaning machine 1 as in the above-described embodiment, and the operating lever 22 and the spring 23 can be attached. When pushed while being compressed, the left and right turning levers 20, 20 turn outward to move the locking protrusions 20a, 2
In order to pull in 0a, the brush or pad 11 can be freely removed from the drive shaft 10 described above.

In the above-mentioned embodiments, the mounting device of the present invention is explained only when it is used in a floor cleaning machine, but the present invention uses the same structure in a floor polishing machine. Of course, the application of the present invention is not limited to the floor cleaning machine.

[0043]

As described above, according to the brush or pad mounting device for a floor surface treating machine of the present invention, the brush or pad can be extremely easily operated with one touch with respect to the drive shaft of the floor surface treating machine. Since it can be attached or removed, the brush or pad can be easily maintained or replaced, and the brush or pad is elastically supported by springs from both sides with respect to the drive shaft fitted in the fitting hole. Since it is configured to be attached to the drive shaft by engaging the locked protrusions, it is possible to rotate the brush or pad in a stable state without worrying that the brush or pad will come off from the drive shaft during rotation. The drive shaft is configured as a hexagonal prism so that the rotation of the motor can be surely transmitted to the brush or the pad side. The water injection hose is inserted into the drive shaft to brush the brush. Is that the cleaning water can be poured into the pad, and the approach with a protrusion on the brush or pad is provided so that the drive shaft can be easily fitted into the fitting hole. Therefore, it is suitable for use in a floor cleaning machine or a floor polishing machine.

[Brief description of drawings]

FIG. 1 is a side view illustrating a configuration of a floor cleaning machine in which a brush or pad mounting device according to the present invention is implemented.

FIG. 2 is a partial cross-sectional plan view illustrating a configuration of a brush or pad and a drive shaft, which is an essential part of the present invention.

3 is a cross-sectional view taken along the line AA of FIG.

4 is a partial cross-sectional plan view showing a state where a drive shaft is fitted in a fitting hole of the brush or pad shown in FIG.

5 is a cross-sectional view taken along the line BB of FIG.

FIG. 6 is a partial cross-sectional side view illustrating the configuration of a pin-shaped locking protrusion attached to the tip of the rotating lever.

7 is a cross-sectional view taken along the line CC of FIG.

FIG. 8 is a perspective view illustrating the configuration of a drive shaft having a hexagonal prism structure used in the present invention.

FIG. 9 is a plan view illustrating the configuration of another embodiment of the present invention.

10 is a cross-sectional view taken along the line DD of FIG.

[Explanation of symbols]

 1 Floor Cleaning Machine (Floor Processing Machine) 4 Motor 9H Water Injection Hose 10 Drive Shaft 10a Engagement Groove 10b Hole for Inserting Water Injection Hose 11 Brush or Pad 11X Top Surface 11d Lock Groove 12 Fitting Hole 12S Approach 13 Protrusion 14 Lock Spring 14a Leg 14b Tip 14c Long hole 15 Pin-type locking protrusion 15T Tip 20 Rotating lever 20a Hook-type locking protrusion 22 Operation lever 23 Compression spring

Claims (5)

[Claims] 1. A floor surface treating machine for cleaning or polishing a floor surface by rotating a brush or a pad with a motor, wherein the bottom surface of the floor surface treating machine has a polygonal cross section rotated by said motor. While the drive shaft of the drive shaft is projected downward, a fitting hole having a polygonal cross-section into which the drive shaft can be fitted is provided on the upper surface of the brush or pad, and one side wall of the fitting hole is connected to the drive shaft of the drive shaft. Is opened to the outside so that it can be fitted from the lateral direction, and an approach for guiding the drive shaft to the fitting hole is provided on the upper surface of the brush or pad, and the inner wall on the left and right of the fitting hole is , The left and right locking projections whose ends are elastically supported by springs so as to project inside the fitting hole are retractably mounted, and the locking projections are attached to the outer side surfaces of the drive shaft. Make sure that the engaging groove that engages the tip of the child is recessed. Mounting device of a brush or pad for floor treatment device, characterized in. 2. A lock spring made of a leaf spring having a pair of leg pieces facing each other on both sides is attached to the upper surface of the brush or pad so as to move back and forth. A hole is provided, and the root ends of the left and right locking protrusions are slidably fitted in the respective long holes, and the above-mentioned brush or pad is pushed on the upper surface of the lock spring when the entire lock spring is pushed. 2. A groove-like or projection-like engaging portion is provided to lock the left and right locking protrusions so as to project toward the fitting holes by engaging the distal end portions of the leg pieces. Brush or pad mounting device for floor treatment machine. 3. A rotating lever is attached to the left and right of the upper surface of the brush or pad, and a locking protrusion formed at the tip of each rotating lever is configured to be retractable toward the fitting hole. The root ends of the left and right rotating levers are pivotally supported on both sides of the operation lever attached to the brush or pad so as to move back and forth, and the operation lever is always struck between the operation lever and the brush or pad. 2. A brush for a floor surface treatment machine according to claim 1, further comprising a spring interposed between the left and right rotating levers so as to elastically support the left and right rotating levers so that the locking protrusions project toward the fitting holes. Or pad mounting device. 4. A drive shaft rotated by a motor is formed into a hexagonal prism, and each side of these hexagonal prisms is provided with an engagement groove for engaging a tip end portion of a locking protrusion, and the drive groove is formed. The brush or pad mounting device for a floor surface treatment machine according to claim 1, 2 or 3, wherein a hole through which a washing water injection hose is inserted is bored in the center of the shaft. 5. An approach for fitting a drive shaft, which leads to an opening of a fitting hole, is formed on the upper surface of the brush or pad, and the lateral width of this approach is provided on the outer peripheral edge of the brush or pad. 4. A projection that adjusts the orientation of a drive shaft that is inserted is provided on one of the inner walls of the approach so that it gradually expands as it approaches the inlet. Brush or pad attachment device for the floor surface treatment machine of.