JP2769716B2 - Squeegee lifting and lowering device for floor cleaning machine - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention is used in the technical field of a floor cleaning machine for cleaning a floor with a brush (pad), and more specifically, for cleaning. The present invention relates to an apparatus for vertically operating a squeegee for sucking and wiping waste water generated by the squeegee.

[Conventional technology]

A floor scrubber (scrubber) with a structure in which the floor is washed with a rotating brush while spraying detergent or fresh water, and the squeegee generated by washing is wiped clean with a squeegee.
There are two types: a hand-operated type in which an operator performs washing while pressing the body, a self-propelled walking type in which an operator drives and runs the vehicle while walking, and an operator in a washing machine to drive and run. There is a self-propelled boarding type that performs washing while washing, and in the case of a self-propelled walking type floor washing machine, an operation handle is provided at the rear of the vehicle body, the forward / backward switch is set to the forward side, and this handle is When the switch is turned down to turn on the micro switch, or to turn on the switch lever provided on the fixed operation handle, or to turn on the travel switch provided on the vehicle body, the travel motor operates. After that, the vehicle body moves forward, and the cleaning of the floor surface, suction of sewage, and wiping are performed by rotation of the cleaning brush and suction of the squeegee.

On the other hand, the squeegee for sewage suction attached to the rear of the car body has the straightness, as well as the suction port of the squeegee adsorbs to the floor surface by the suction action of the vacuum and improves the follow-up to the floor surface washed with the cleaning brush. In order to effectively perform the recovery operation, a rotary shaft for connection with the vehicle body is provided in the front, and the mechanism is configured to move while being dragged by the vehicle body.

Therefore, when the vehicle body is moved backward, the squeegee's left and right and up and down movements become unstable. Therefore, it is necessary to always pull up the squeegee from the floor with a pulling string or the like.

[Problems to be solved by the invention]

Therefore, when retracting the floor washer, first pull up the squeegee from the floor using the up / down lever, etc., then switch the forward / reverse switch to the retreating side, and then push down the operating handle to activate the micro switch. Since a total of three operations to turn on are required, the operation was very troublesome.

Also, when the floor washer of the above configuration is retracted,
If the body is pinched between the operation handle and the wall, etc., the abdomen obstructs and returns the operation handle to a horizontal state, so that the micro switch cannot be turned off. Since it is also difficult to extend and switch between them, the retreat may continue as it is, which is very dangerous.

Further, the above-mentioned squeegee needs to be pulled up from the floor so as not to be obstructed when the floor-cleaning machine is moved forward except for the cleaning operation. It is necessary to keep pulling up, and in this respect, the operation becomes very complicated, and there is a problem that safety is hindered.

Therefore, the technical problem of the present invention is that the backward movement of the vehicle body and the pulling-up operation of the squeegee can be easily and reliably performed with one touch, and the backward movement of the vehicle body can be promptly stopped in an immediate case. An object of the present invention is to provide a squeegee raising / lowering device for a floor cleaning machine capable of holding a squeegee in a pulled state.

[Means for solving the problem]

Means taken by the present invention to solve the above technical problem are as follows.

A self-propelled walking floor washer that cleans the floor by operating and driving a vehicle body while operating an operation handle provided at a rear part of the vehicle body. (1) Pulling up a squeegee to the front end side at the rear part of the vehicle body. A string and a spring for pulling back the handle are attached, and when the squeegee is pulled up by the pull-up string, the turn-up is stopped when it turns upward against the pulling force of the spring and exceeds the dead point, and exceeds the dead point. Provide a squeegee handle that can be held as it is.

(2) Similarly, at the rear of the vehicle body, a reversing handle with an operating lever attached to the distal end is provided in parallel, and at the distal end of the operating lever, a spring for pulling back the handle is attached.
Engage with the tip of the squeegee handle from below,
The squeegee handle is provided with an engagement piece that can rotate together with the squeegee handle when the retreat handle is turned upward against the pulling force of the spring.

(3) A motor switch for retreating the vehicle body, which is turned on by being pushed by the operating lever, is provided on the turning path before reaching the dead point of the operating lever.

[Action]

 The above means works as follows.

The element described in the above (1) is such that when the handle for a squeegee is turned upward, the pulling string can pull up the squeegee from the floor surface, and when the handle is further turned to exceed the dead point, the squeegee can be moved. The squeegee can be held in a raised position against the pulling force of the spring because the downward rotation of the squeegee handle is restrained. It is possible to drive the vehicle while it is raised above the surface.

In the element described in (2) above, when the retreat handle is turned upward, the engaging piece of the operating lever engages with the distal end portion of the squeegee handle and turns integrally therewith and rotates together. The pull cord is pulled up, allowing the squeegee to be pulled off the floor.

The element described in (3) above is characterized in that the operating lever which is turned upward in accordance with the turning operation of the retreat handle turns on the motor switch for retreating the car body at the same time as pulling up the squeegee. Therefore, the vehicle body can be retracted and the squeegee can be pulled up by one-touch operation of one retreat handle, and the motor switch is located at a position before the operating lever exceeds the dead point, that is, Since the operation is performed at the change point, if the driver immediately releases his hand from the reverse handle, the retraction spring retracts the reverse handle to turn off the motor switch, thereby enabling the vehicle to immediately stop retreating. As described above, the technical problems described above can be solved by the above means, and the problems of the conventional technology can be solved.

〔Example〕

Hereinafter, a preferred embodiment of the squeegee raising and lowering device for a floor cleaner according to the present invention will be described in detail with reference to the accompanying drawings.

1 and 2 are a side view and a plan view, respectively, showing an example of a floor cleaning machine provided with a squeegee lifting / lowering device according to the present invention.
In the figure, 1 is a vehicle body, 2a and 2b are wheels and casters for traveling, 2M
Denotes a running motor for rotating the wheels 2a, and 3 denotes a cleaning brush rotated by the motor 3M.

5S and 5T are for fresh water (for detergent liquid) mounted on the vehicle body 1.
The cleaning water and the detergent liquid are supplied to the brush 3 from the fresh water tank 5S in the tank and the sewage tank.
Reference numeral 4 denotes a sewage suction blower attached to the sewage tank 5T. The suction force of the blower 4, which is rotated by the motor 4M, acts on the squeegee 7 through the sewage tank 5T and the water absorption hose 6, and is applied to the floor. The system is designed to suck and collect the cleaning sewage in the sewage tank 5T.

Reference numeral 8 denotes an operation handle which has both ends 8a, 8a protrudingly provided on the rear surface of the vehicle body 1 and is attached to left and right brackets 1a, 1a so as to be rotatable up and down. The handle 8 receives a pulling action of a spring (not shown). The horizontal position is always maintained, and when this is depressed as shown by the imaginary line in FIG. 1, a micro switch (not shown) is turned on to operate the traveling motor 2M. Reference numeral 9 denotes a hand switch attached to the operation handle 8 for both starting and speed adjustment, MS denotes a main switch for operation, V denotes a power supply battery for each of the motors 2M, 3M and 4M, and 7a denotes a time when the squeegee 7 is mounted. Moving arm, 14
Indicates a pulling string (wire) of the squeegee 7.

Next, reference numerals 10 and 11 denote a squeegee handle and a retreat handle mounted side by side on the rear surface of the vehicle body 1, and FIGS. 3 and 4 are detailed views thereof.

In other words, the squeegee handle 10 for vertically moving the squeegee 7 has a bent distal end 10a attached to the mounting plates 1b and 1c in the vehicle body 1 so as to be vertically rotatable, and has a pivot at its distal end. At the same time as attaching the lever 12, the tip of a pull-back spring 15 is hung on the shaft 13 attached to the rotating lever 12, and the upper end of the above-described squeegee pulling string 14 is mounted on the mounting portion 13b provided on the shaft 13. When the squeegee handle 10 is attached and is rotated in the clockwise direction against the traction force of the retraction spring 15 from the state shown in FIG. 5B (the arrow B in FIG. 3), the pulling string 14 is pulled. Then, when the squeegee 7 is pulled up from the floor surface and the rotation proceeds to the state shown in FIG. 6B and exceeds the dead point, the rotation state is maintained even if the hand is released from the handle 10. 14 to keep the squeegee 7 pulled up. It is configured to be.

Although not shown in the drawings, when the squeegee handle 10 is turned to a position beyond the dead point shown in FIG. 6B, the turning lever 12 or the squeegee handle
10 is stopped by locking means such as a stopper, and
In the figure, the mechanism is such that it cannot be rotated clockwise.

On the other hand, a retreat handle 11 for retreating the vehicle body 1
As shown in FIG. 3, a front end 11a, which is bent as shown in FIG. 3, is attached to the mounting plates 1d, 1e in the vehicle body 1 so as to be vertically rotatable. An operating lever 16 having a mating piece 16a and a pressing piece 16b connected thereto is attached, and a pull-back spring 17 is stretched between the pressing piece 16b and the mounting plate 1d. When viewed from the state shown in FIG. 2), when the pull-up spring 17 is lifted and turned counterclockwise in the drawing against the pulling force of the pull-back spring 17, the engaging piece 16a of the operating lever 16 is rotated as shown in FIG. The squeegee handle 10 is engaged with the distal end portion 13a of the shaft 13 protruding from the distal end side of the squeegee handle 10 from below. It is a mechanism that can be done.

In FIGS. 5A and 6A viewed from the direction of arrow A in FIG. 3 and FIG. 6A, reference numeral 18 denotes a motor switch for reversing the traveling motor 2M and retreating the vehicle body 1. The switch piece 18a of the switch 18 mounted on the mounting plate 1d
The operation lever 16 that rotates in accordance with the rotation operation of the retraction handle 11, specifically, protrudes from the rotation passage of a pressing piece 16b that is connected to the operation lever 16, and the retraction handle 11
Is turned to the position of the stopper 19 which does not exceed the dead point, the pressing piece 16b pushes the switch piece 18a to turn on the motor switch 18, and the vehicle body 1 can be moved backward.

Therefore, according to the squeegee raising and lowering device for a floor washer according to the present invention, if the squeegee handle 10 is pulled up and turned to a position beyond the dead point as shown in FIG. 6B, the squeegee 7 is pulled up from the floor and the state is changed. While the squeegee handle 10 can be held and the squeegee handle 10 is held down, the retraction handle 11 is pulled up to the state shown in FIG.
The squeegee 7 is pulled up from the floor by rotating
Turn on the reverse rotation motor switch 18 of the traveling motor 2M,
The vehicle body 1 can be moved backward. Also, pull back spring 1
7, and a retraction handle that is pulled up and turned against the traction force of the retraction spring 15 on the squeegee handle 10 side.
11 is stopped at a position before the dead point, and when the handle is released from the handle 11, the two handles 10, 11 are immediately returned to the state before the rotation by the pulling force of the springs 15, 17. As a result, the motor switch 18 is turned off and the retraction of the vehicle body 1 is stopped, and at the same time, the squeegee 7 is again grounded to the floor.

〔effect〕

The squeegee raising and lowering device for a floor cleaning machine according to the present invention is as described above. Therefore, if the squeegee handle is pulled up and rotated, the squeegee can be held in a state of being pulled up from the floor, so that the floor cleaning machine can be held. If you want to move the vehicle backwards, pull up and rotate the reversing handle to pull up the squeegee and turn on the reverse motor switch at the same time. It can be carried out. Furthermore, when the hand is released from the raised retraction handle, the retraction of the vehicle body is stopped. Therefore, even if the body is sandwiched between the operation handle and the wall surface of the reversing vehicle body, release the hand from the retraction handle. It is equipped with safety that can immediately stop the retreat of the vehicle body by itself, and is suitable for a self-propelled walking type floor washing machine that allows an operator to run while operating an operation handle. .

[Brief description of the drawings]

1 and 2 are a side view and a plan view of a floor washer provided with a squeegee raising and lowering device according to the present invention, and FIG. 3 is a plan view showing the structure of the present invention, and FIG. FIG. 5A and FIG. 5B are front views showing main components of the present invention, and FIGS. 5A and 5B are views before turning of the retreating handle and the squeegee handle seen from the directions of arrows A and B in FIG. FIG. 6A and FIG. 6B are side views each showing a state when each handle is turned. 1 is a vehicle body, 2a is a wheel, 2M is a running motor, 7 is a squeegee, 8 is an operation handle, 10 is a squeegee handle, 11 is a retreat handle, 13a is a tip, 14 is a squeegee pull cord, 15 and 17 Is the return spring, 16 is the operating lever, 16a
Is an engagement piece and 18 is a reverse motor switch.

────────────────────────────────────────────────── ─── Continuing on the front page (72) Inventor Tetsu Arai 8123 Kiga, Hosoe-cho, Husa-gun, Shizuoka Tokai Amano Corporation (58) Field surveyed (Int. Cl. ⁶ , DB name) A47L 11/00-11 / 40 E01H 1/08

Claims (1)

(57) [Claims] 1. A self-propelled walking type floor washer for cleaning a floor by driving a vehicle body while operating an operation handle provided at a rear part of the vehicle body. When the pull-up string and the spring for pulling back the handle are attached, and it turns upward against the pulling force of this spring and exceeds the dead point, the downward rotation is stopped and the pull-up string pulls up the squeegee. A squeegee handle with a structure that can hold the state as it is, and a retraction handle with an operating lever attached to the distal end are provided side by side, and a spring for pulling back the handle is attached to the distal end of the operating lever. When the retraction handle is turned upward against the pulling force of the spring, the squeegee handle is rotated together with the tip of the squeegee. And a motor switch for retreating the vehicle body, which is turned on by being pushed by the operating lever, is provided on a rotating path before reaching the dead point of the operating lever. Squeegee lifting device for surface washer.