JP3478976B2 - Floor polishing machine - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention is utilized in the technical field of a floor polisher for polishing a floor surface by rotating a pad at a high speed with a motor while pushing an operating handle to move the pad. Specifically, the present invention relates to a floor polisher designed to reduce the space of the polisher during storage.

[0002]

2. Description of the Related Art A conventional manually-operated floor polisher in which a worker runs the machine while manually pushing an operation handle to polish the floor is disclosed in, for example, Japanese Patent Laid-Open No. 5-115400. As described above, there is one in which an operation handle is erected at the rear of the polisher to which a pad and a motor are attached.

However, in the conventional floor polisher configured as described above, the operation handle is in a standing state during storage, and in addition, a large-diameter pad is placed on the floor surface in the same manner as when working. Since it is designed to be left on the ground and requires a large storage space, the larger the polisher, the more hindered it becomes. Since the pad is stored in a state that it is grounded directly to the floor, it will be in a state in which the pressure of the motor etc. is always applied to the pad, causing deformation of the pad etc. Mucking up and getting dirty and damaging the pads. When attaching or removing the pad, the entire polishing machine must be laid down or lifted up, which makes the work extremely difficult. There were various problems.

Therefore, the applicant of the present invention has previously filed Japanese Patent Application No. 7-129.
As can be seen in the application of Japanese Patent No. 788 (Japanese Patent Application Laid-Open No. 8-299238), the operation handle can be tilted and rotated in the forward direction so that the operation handle and the large pad do not get in the way during storage. The entire unit can be stored in a compact state, and the pad can be prevented from being deformed or damaged by moisture during this storage, and the floor surface is designed so that it can be easily attached and removed. Developed an opportunity.

[0005]

However, even in the floor polisher described above, the length corresponding to the length of the operating handle cannot be shortened as shown in FIG. 3 of the publication when folded. Even if it is made compact by folding the whole, the operating handle may get in the way when it is put in a warehouse or a locker where the height is still limited, so further downsizing is required. It was

Further, since the conventional floor polisher has a long power cord wound around a hook provided on an operation handle, the weight of the power cord itself is added to the floor polisher when polishing or moving. In some cases, the power cord may come off from the root of the cord and fall off, which is extremely dangerous in terms of work.

Further, the floor polisher is configured to give gloss to the gloss of the floor by supplying a gloss recovery agent (wax liquid) from the spray tank to the pad side during the polishing operation. However, since the conventional floor polisher uses a special spray tank equipped with an operating handle in advance, it takes time to replace or refill the wax liquid, and the amount of the wax liquid supplied is too large. In some cases, the wax effect was not sufficient, and the wax effect was not sufficient.

Therefore, a technical object of the present invention is to make it possible to further compact the whole operation by folding the operation handle shortly when the whole floor polisher is folded and leaned against the floor.

Still another technical problem of the present invention is to prevent the power cord wound around the operation handle from being easily detached due to its weight during polishing operation or moving, and to use a commercially available wax spray tank. (Supply tank) can be attached to the operation handle in a replaceable manner, and the supply amount (spray amount) can be easily adjusted by hand operation to allow glossing operation.

[0010]

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

A floor polishing machine for polishing a floor by rotating a pad at a high speed with a motor while pushing an operation handle to move the pad.

(1) The above-mentioned operation handle can be locked at a neutral position which is upright with respect to the frame of the polisher, and can be pivoted to an arbitrary inclination angle in the front direction of the polisher by releasing this lock. On the other hand, in the middle part of the operation handle, it can be locked by switching between the state where the whole operation handle is extended straight and the state where it is bent at a substantially right angle from the middle part to the front of the polisher. Providing a joint part configured in. (Claim 1)

(2) On the rear side of the polisher, auxiliary wheels for supporting the whole polisher on the floor in a state of standing on its back are provided, while the lower end of the operation handle is generally inverted L-shaped. -Like two-pronged handle legs are connected in series, and both ends of these handle legs are rotatably supported by the vehicle of the traveling wheels, and the above-mentioned upper end portion of the handle legs is Provide a free wheel that can support the glaze machine in a state of standing on its back on the floor in cooperation with auxiliary wheels. (Claim 2)

(3) The frame of the glaze machine is provided with a front fall prevention stopper which is locked to the handle leg to prevent the operation handle from falling in the forward direction of the polish machine from the upright state, while the above frame is provided. A lock pin that engages with the handle leg and holds the operating handle in an upright neutral position is attached to the rotatable lever, and the frame is provided with the rotatable lever. A foot pedal that can be moved to disengage the lock pin from the handle leg is provided, and the joint portion provided in the middle portion of the operation handle has the operation handle straightly extended by utilizing the elastic force of the spring. The engagement pin that can be locked by switching to the state in which the engagement pin is bent at a right angle to the above state is provided in the operation box provided at the upper end of the operation handle. An operating lever that can release the locked state of each of them by manual operation against the elastic force of the spring is provided. (Claim 3)

(4) Two hooks for winding the power cord, which are formed in a substantially L shape, are attached to the upper and lower sides of the operation handle at intervals, and the power cord can be inserted and entangled in each of these hooks. Provide a possible slot. (Claim 4)

(5) A spray tank for supplying wax liquid to a pad of a polisher through a supply hose is attached to the upper end side of the operation handle by using an attachment device of a sandwiching structure, while the upper end of the operation handle is attached. A push button that can press the injection lever of the spray tank to supply the wax liquid to the supply hose side is provided in the operation box provided in the Provide an adjusting member that can adjust the amount of actuation. (Claim 5)

According to the means according to claim 1 described in the above (1), in the glaze operation, first, the operation handle in the upright neutral position and in the straight extended state is locked. By removing the and rotating it at an arbitrary inclination angle in the front direction with respect to the frame, it is possible to run the polisher while pressing the pad that rotates at high speed against the floor surface to polish. During storage and storage, after locking the operation handle in the upright neutral position and bending it forward from the intermediate joint, the length of the operation handle can be shortened during storage and storage to fold the whole compactly. It can be folded and can be easily stored in a short storage space or inside a locker.

According to the second aspect of the present invention described in (2) above, since the handle leg is provided with a free wheel such as a caster, the entire polisher in the state where the operation handle is folded at the joint portion. When the stool is erected on the floor on its back, it is possible to stably support the above-mentioned swivel vehicle and auxiliary wheels in a state in which the glazing machine is erected. Allows the mover to move freely in the folded state.

Further, according to the means described in the above (2), when the operation handle is turned from the upright state (neutral) to the front and is tilted with respect to the floor surface side, the free wheel is moved first. Can contact the floor surface and support the operation handle while tilting it, so if you temporarily stop while driving, you do not need to return the operation handle to the upright state each time Not only can it be simplified, but even if the polisher is moved with the operation handle tilted toward you, the free wheel is touching the floor,
Enables safe movement without damaging the floor.

According to the third aspect of the invention described in (3) above, when the foot pedal is stepped on, the operation handle can be unlocked, and can be freely tilted and rotated toward the front side. Operation lever,
Unlock the joint part of the operation handle, bend the operation handle at the joint part at a substantially right angle,
On the contrary, it is possible to unlock this bent state, and by operating the foot pedal and the operating lever, you can set the operating handle to the operating state or store or store it. It is possible to lock it.

According to the means of claim 4 described in the above (4), when the power cord is wound around the two hooks provided on the upper and lower sides of the operation handle to mount the power cord, the power cord has a glazing machine side. Since the vicinity of the connection part can be inserted and entangled in the slit of the hook, there is no concern that the power cord will come off from the root end side due to its weight, and it is possible to safely operate and move the polisher To

According to the means of claim 5 described in (5) above, a commercially available wax supply tank (pump) can be used as a spray tank by attaching it to the operation handle, and provided in the operation box. By pressing the push button, the spray lever of the spray tank can be pressed to supply the wax liquid to the pad side, and the adjustment amount of the spray lever can be adjusted by adjusting the adjusting member to wax the pad. It enables the amount of liquid supply to be adjusted freely.

As described above, the above (1)-
The above-mentioned technical problem is solved by the means (5),
It is possible to solve the problems of the conventional technology.

[0024]

BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, an embodiment of a floor polisher according to the present invention will be described with reference to the drawings. FIG. 1 is a perspective view illustrating the appearance of the floor polisher according to the present invention. In the figure, the reference numeral 1 generally indicates a polisher, and 2 indicates a body 1A.
A pad (1B) is a pad cover for polishing the floor surface by rotating it at a high speed by a motor (not shown) housed inside.
Is a traveling wheel, 4 is an operation handle attached to the rear part of the machine body 1A, 5 is an operation box attached to the upper end of the operation handle 4, and 6 and 6 are left and right operation grips.

Further, 5A, 5B and 5T are driving levers and operating levers provided on the above-mentioned operating box 5, and 8 is the body 1
With respect to the handle leg 7 provided on the side, a joint portion for connecting the operation handle 4 so that the angle can be adjusted, 9 is a power cord wound around the operation handle 4 using a hook described later, and 9A is a plug for inserting the same. Further, 10 is a commercially available wax supply tank (spray tank) attached to the operation handle 4 by using the attachment device described later, and is provided in the operation box 5 after the pump lever 10X is repeatedly pressed to pressurize. When the spray button 20 is pressed, a pressurized wax liquid (gloss recovery agent) is supplied to the pad 2 side through the supply hose 10P, so that the wax liquid can be applied to the floor surface.

FIG. 2 is a side view for explaining the rotating state and the folded state of the operating handle 4, and FIG. 3 is a side view for explaining the storing state in which the operating handle 4 is folded at the joint portion 8. The joint portion 8 is configured as shown in FIGS.

In FIG. 4, 4A and 4A are left and right joint plates integrally joined together with a fitting groove 4B formed in the center, and 4T is slidably fitted inside the left and right joint plates 4A and 4A. The engaged pin 4S is the engaging pin 4T.
Is a spring that constantly springs so as to project toward the fitting groove 4B, and the root end portions 4D of the left and right joint plates 4A, 4A integrally joined to each other are attached to the lower end portion of the operation handle 4 described above. When the operation lever 5T is fixed, and the operation lever 5T and the engagement pin 4T are connected by a wire 4W, and the operation lever 5T is rotated upward as shown in FIG. Is configured to pull up the engaging pin 4T against the elastic force of the spring 4S and operate.

Further, in FIG. 2 to FIG. 4, 1S is the body 1
A frame 3K is an auxiliary wheel attached to the rear part of the machine body 1A using an axle 3X, and 7T and 7T are bifurcated leg pieces connected to the lower end of the handle leg 7 described above. As shown in FIGS. 6 and 7, the lower ends of the pieces 7T, 7T are pivotally attached to the axle 3R of the traveling wheel 3 so as to be rotatable back and forth, and the upper end of the handle leg 7 has an upper surface and a front surface described above. Dowel pin 4
A disk body 7'having recessed lock holes 7Ra and 7Rb (see FIG. 5) with which T is engaged is integrally mounted using a screw 7X.

The disk body 7'constituted as described above is
Fitting groove 4B between the left and right joint plates 4A and 4A described above.
And the connecting shaft 8 is inserted into each of the insertion holes 4C and 7H.
By inserting P, the operation handle 4 is rotatably connected to the handle leg 7 in the front-rear direction, and the engagement pin 4T described above is disc-shaped as shown in FIG. 5 by the elastic force of the spring 4S. Lock hole 7 formed on the upper surface of 7 '
When engaged with Ra, the operation handle 4 is held in a straight upright neutral position, and the locking pin 4 is held.
When T engages with the lock hole 7Rb on the front surface, the operation handle 4 is held in a state of being folded at a substantially right angle (horizontal) from the joint portion 8 as shown by the phantom line in FIG. .

In FIGS. 6 and 7, 13 is a frame 1S.
A stopper for preventing the operation handle 4 from falling forward, 14
Is a rotary lever rotatably attached to the frame 1S using a shaft 15, and the tip of the rotary lever 14 is
A lock pin 14B that engages with a lower end portion 7Ta of a leg piece 7T of the handle leg 7 and holds the entire handle leg 7 in an upright neutral position is attached, and a rear end portion of the axle 3X of the auxiliary wheel 3K. The operating plate 12A of the foot pedal 12 attached to the pedestal is rotatably connected using the shaft 12B, and when the foot pedal 12 is stepped on with the foot as shown in FIG. 7 from the locked state of FIG. The lock pin 14B is moved to remove from the lower end 7Ta of the leg piece 7T, and the entire operation handle 4 connected to the handle leg 7 is freely tilted to the rear of the polisher 1 as shown by the phantom line in FIG. It is configured to move.

6 and 7, 12B is a shaft 14A.
The long hole 7Xa is a stopper for stopping the rotation of the rotation lever 14, and 7R is attached to the rear surface of the handle leg 7 in FIGS. 2, 3, and 5 to 7. This is a freewheel such as a caster. When the operating handle 4 is tilted too far backward, the freewheel 7R grounds the floor first to prevent damage to the operating handle 4 and the floor. It has a function of supporting the whole polisher 1 in a movable state in a state where the whole polisher 1 is folded up compactly in cooperation with the above-mentioned auxiliary wheels 3K in a state in which the whole polisher 1 is laid on its back on its back. ing.

Further, in FIGS. 2 and 3, FIG. 5, FIG. 8 and FIG. 9, 11 and 11 are hooks which are attached to the outer surface of the operation handle 4 at intervals vertically and which are substantially L-shaped. A power cord 9 can be wound around and attached between the hooks 11 formed in the shape of a ring, and each hook 11 can be slit 11 in the longitudinal direction as shown in FIGS. 8 and 9.
When A is formed and the power cord 9 is wound,
The root end side is inserted into the slit 11A as shown in FIG. 8 and entangled so that the root end side of the power cord 9 does not fall off due to its weight during operation or movement. .

In FIG. 8 and FIG. 9, 22 is the root end portion 2 thereof.
1'is attached to the upper end portion of the operation handle 4, a fixing plate,
23 is mounted on the mounting / fixing plate 22 so that the distance between the mounting / fixing plate 22 can be adjusted wide and narrow and vertically slidable by inserting a screw shaft 24 protruding from the outer surface of the mounting / fixing plate 22 into the guide elongated hole 23A. Movable clamping plates, 22A and 23R are upper and lower pressing pieces provided on the mounting and fixing plate 22 and the movable clamping plate 23, and 25 is a tightening dial screwed to the outer end of the screw shaft 24. Each member constitutes a mounting device 21 to which a commercially available spray tank 10 as shown in FIG. 10 can be mounted in a replaceable manner.

As shown in FIG. 8, the mounting and fixing plate 22 and the movable holding plate 23 configured as described above are inserted with the handle 10H of the spray tank 10 therebetween, and then the tightening dial 25 is tightened. By operating, the left and right sides of the handle 10H are clamped between the mounting fixed plate 22 and the movable clamping plate 23, and the upper and lower both sides thereof are the above-mentioned upper and lower pressing pieces 22A.
And 23R, the spray tank 10 can be securely attached to the operation handle 4, and due to its flexibility, the commercially available spray tank 10 having a different size can be used.
However, it has a feature that it can be freely attached and used.

Further, in the figure, reference numeral 23T is an adjusting member formed by bending the upper end portion of the movable holding plate 23 into a substantially L shape, and this adjusting member 23T is of the wax injection injection lever 10E of the spray tank 10. Intervening in the lower part,
The upper and lower sliding positions of the movable holding plate 23, which is fixed by tightening the tightening dial 25, causes the injection lever 10E
The mechanism is such that the amount of pressing rotation of, that is, the injection amount of wax can be freely adjusted.

Further, 20T is an operating rod of the push button 20 provided by vertically inserting the operation box 5, and 20A is a pressing piece provided at the lower end of the operating bar 20T.
A is placed on the upper surface of the injection lever 10E of the spray tank 10, and when the push button 20 is pressed after the pump lever 10X is repeatedly pressed, the injection lever 10E is pressed to pressurize the wax liquid. Is supplied to the pad 2 side from the supply port 10A through the supply hose 10P.

Since the floor polisher according to the present invention has the structure as described above, the operation lever 5T is first rotated to set the stored polisher 1 shown in FIG. 3 to the use state. After operating the operating pin 4 to the upright neutral position shown in FIG. 5 while removing the engaging pin 4T from the lock hole 7Rb on the front surface of the disk body 7 ', the operating lever 5T
When the hand is released from, the engaging pin 4T engages with the lock hole 7Ra on the upper surface by the elastic force of the spring 4S, and holds the operation handle 4 in the extended state.

Next, by depressing the foot pedal 12 and removing the lock pin 14B from the handle leg 7 side, the operating handle 4 is inclined at an arbitrary angle in the front direction with respect to the machine body 1A as shown by the phantom line in FIG. It is possible to proceed to polish the floor surface by rotating the pad 2 at a high speed, and when applying wax to the floor surface, press the spray tank 10 and then press the push button 20 to apply an appropriate amount of wax to the pad 2. As described above, the liquid can be supplied to apply the wax.

After finishing the above-mentioned polishing operation, the polishing machine 1
In order to fold the whole of the above into the storage state shown in FIG. 3 again, first return the operating handle 4 to the upright neutral position, and then use the lock pin 14B and the forward-tilt prevention stopper 13 as shown in FIG. After holding the lever, the operating lever 5T is pulled up to disengage the engaging pin 4T from the lock hole 7Ra on the upper surface, while the operating handle 4 is moved from the joint portion 8 to the glazing machine 1 as shown by the phantom line in FIG. Bending forward at a substantially right angle along the upper surface, then releasing the operation of the operation lever 5T and engaging the locking pin 4T with the lock hole 7Rb on the front surface by the elastic force of the spring 4S, the operation handle 4 is moved. The folding state shown in FIG. 3 can be maintained, and the auxiliary wheels 3K and the free wheel 7R can support the glazing machine 1 in a state of standing on its back on the floor. It is also possible to move to the location.

In FIG. 4B, 5S indicates a power switch and 5T 'indicates an outlet for the power plug 9A.

[0041]

As described above, according to the floor polisher according to the present invention, since the operation handle can be folded from the joint part in the middle, the entire polisher can be folded into a smaller size for storage. It saves space for storage and storage, and the power cord wrapped around the hook does not fall off during operation or movement, allowing safe work to be performed. Moreover, a wax liquid spray tank is also available on the market. It can be attached and used, and it also has the feature that its injection amount can be adjusted freely, and is highly practical as a floor polisher.

[Brief description of drawings]

FIG. 1 is a perspective view illustrating the appearance of a floor polisher according to the present invention.

FIG. 2 is a side view for explaining a folded and rotated state of the operation handle.

FIG. 3 is a side view illustrating a state when the floor polisher according to the present invention is stored.

4A and 4B are views for explaining the structure of the joint portion of the operation handle, in which FIG. 4A is an exploded front sectional view thereof, and FIG. 4B is a front sectional view in an assembled state.

FIG. 5 is a side view showing a folded state of the operation handle with a main portion in section.

FIG. 6 is a configuration diagram of a main part for explaining a state in which the operation handle is locked at a neutral position.

FIG. 7 is a configuration diagram of a main part illustrating a state in which a foot pedal is stepped on and an operation handle is unlocked.

FIG. 8 is a perspective view illustrating a mounting structure of a spray tank and a state in which a power cord is entwined.

FIG. 9 is a perspective view illustrating a hook structure and a spray tank mounting device structure.

FIG. 10 is a perspective view illustrating the structure of a spray tank.

[Explanation of symbols]

1 polisher 1S frame 2 pads 3 running wheels 3K auxiliary wheels 4 operation handle 4S spring 4T engagement pin 5 Operation box 5T operating lever 7 handle leg 7R Flexible car 7'disc body 7Ra Top lock hole 7Rb Front lock hole 8 joint section 9 power cord 10 spray tanks 10P supply hose 10H handle 10E injection lever 11 hooks 11A pickpocket 12 foot pedal 14 Rotating lever 14B lock pin 20 push button 21 Mounting device 23T adjustment member

─────────────────────────────────────────────────── ─── Continuation of front page (72) Inventor Manabu Matsushita 8123 Kiga, Hosoe-cho, Inasa-gun, Shizuoka Amano Co., Ltd. Hosoe Works (72) Inventor Ryuji Hayashi 8123, Kiga, Hosoe-cho, Inasa-gun, Shizuoka Amano Co., Ltd. Hosoe Works (72) Inventor Norihisa Ikaya 8123, Kiga, Hosoe-cho, Inasa-gun, Shizuoka Amano Co., Ltd. Hosoe Works (72) Inventor Tsutomu Yamagishi 1-6-2 Shintsuda, Hamamatsu-shi, Shizuoka Amano Corporation Tsuda Techno Business In-house (56) Reference JP-A-8-299238 (JP, A) (58) Fields investigated (Int.Cl. ⁷ , DB name) A47L 11/162 A47L 11/164 A47L 11/40

Claims (5)

(57) [Claims] 1. A floor polisher for polishing a floor surface by rotating a pad at a high speed with a motor while pushing the operation handle to run, wherein the operation handle is attached to a frame of the polish machine. The operation handle can be locked in an upright neutral position and can be unlocked to rotate at any inclination angle in the front direction of the polishing machine, while the entire operation handle is straightened in the middle part of the operation handle. A floor polisher, which is provided with a joint part configured so that it can be locked by switching between an extended state and a state in which the intermediate part is bent at a substantially right angle in the forward direction of the polisher. 2. An auxiliary wheel is provided on the back side of the glazing machine to support the glazing machine in an upright position on the floor, while the lower end of the operation handle is generally inverted L-shaped. The two-pronged handle legs are continuously provided, and both ends of the handle legs are rotatably supported by the vehicle of the traveling wheels, and the above-mentioned auxiliary is attached to the upper end portion of the handle leg. 2. The floor polisher according to claim 1, further comprising a swivel wheel capable of supporting the polisher in a state of standing upright on the floor in cooperation with the wheels. 3. A front fall prevention stopper is provided on the frame of the glaze machine so that the operation handle does not fall in the forward direction of the glaze machine from being held upright while the frame is rotated on the frame. A rotatably mounted rotary lever is fitted with a lock pin that engages with the handle leg and holds the operating handle in an upright neutral position, and the frame is rotatably mounted with the lock lever. A foot pedal that allows the lock pin to be removed from the handle leg is provided, and the joint provided in the middle of the operation handle is in a state where the elasticity of the spring is used to extend the operation handle straight. And an operating pin provided on the upper end of the operating handle, with an engaging pin that can be switched and locked in a state of being bent at a substantially right angle.
The floor polisher according to claim 1 or 2, further comprising an operation lever for releasing the locked state of the engagement pin by manual operation against the elastic force of the spring. 4. The upper and lower sides of the operating handle are provided with two hooks for winding a power cord, which are formed in a substantially L-shape, with a space therebetween, and the power cord can be inserted and entangled in each of these hooks. The floor polisher according to claim 1, wherein a slit is provided. 5. A spray tank for supplying wax liquid to a pad of a polisher through a supply hose is attached to the upper end of the operation handle in an exchangeable manner by using an attachment device having a sandwiching structure, while the upper end of the operation handle is attached. The operation box provided is equipped with a push button that can press the spray lever of the spray tank to supply the wax liquid to the supply hose side. The floor polisher according to claim 1, further comprising an adjusting member capable of adjusting the amount of the above.