JP4818128B2 - Squeegee device for floor cleaning machine - Google Patents

Description

  TECHNICAL FIELD The present invention relates to a squeegee used for a floor cleaning machine, and more specifically, industrial use used in a factory or the like where many devices that are obstacles at the time of cleaning are installed on a small scale. The present invention relates to a squeegee device suitable for use in a floor cleaning machine.

Nowadays, it is desired to improve the work environment in factories of relatively small to medium-sized companies. However, due to this background, small size and small turning have been effective recently, and cleaning sewage can be used efficiently. A floor surface cleaning machine using a disk-like brush or pad that cleans and cleans the floor surface while collecting is used. For example, in the invention described in Patent Document 1, it is not necessary to use a large squeegee because the washing water being cleaned is immediately collected by arranging the position of the squeegee between the rear wheel and the disc-shaped brush, A small floor washer with a squeegee that is narrow overall.
JP 2005-324020 A

  However, in the “floor cleaner, especially floor cleaner for industrial use” described in Patent Document 1, in a small factory with many obstacles, offices, stores, etc. Even if you want to clean oil stains in places where floor space is partially vacant (such as around the window of the evacuation / rescue guidance route where placement of luggage is prohibited by the Building Standards Act Construction Order), it is only in one direction. Since washing water cannot be collected, it is easy to leave washing waste water, and it is impossible to clean the places where the floor cleaner cannot pass, or the trouble of collecting the remaining waste water after washing with a separate squeegee There was a problem that it took.

  For this reason, it was considered that a squeegee was provided before and after the disk-shaped pad or brush to ensure that sewage was collected during forward and backward movements. As a result, there is a problem that the pressing force on the floor becomes large, and as a result, the operation of the floor cleaning machine becomes heavy and becomes very difficult to handle.

  In other words, a floor cleaning machine with squeegees at the front and rear increases the operation of the floor cleaning machine (load when pushing manually) due to the pressing force of the front squeegee when moving forward, and strengthens the front squeegee. If the forward cleaning operation is continued while being pressed, the blades of the front squeegee are quickly consumed, causing problems such as frequent replacement work.

  Furthermore, the floor cleaning machine having squeegees on the front and back of the pad or brush needs to exert a suction action on the squeegees on the front and back, so there is a problem that the structure becomes complicated and the cost increases. The cleaning sewage spreads in the horizontal direction, leaving the sewage left behind on the floor after cleaning.

  The present invention was developed for the purpose of solving each of the above-mentioned problems, and its technical problem is to simplify the structure of a floor cleaning machine in which squeegees are attached before and after a disk-shaped pad or brush. As a result, it is possible to reduce the cost, solve various operational problems caused by the front squeegee and wear of the front squeegee, and solve the problem of uncleaned waste after washing. An object of the present invention is to provide a floor squeegee squeegee device devised as described above.

(1) In order to solve the above technical problem, a squeegee device for a floor cleaning machine according to claim 1 of the present invention is configured to supply cleaning water to the floor surface in a disk shape while moving the machine forward. Floor cleaning by rotating the formed pad or brush, and cleaning the floor using the suction force of the blower to absorb the sewage after cleaning by the rear squeegee provided at the rear of the pad or brush. A front squeegee is provided at the front of the airframe, using the suction force of the blower when the airframe is retracted, to absorb the washed sewage remaining on the front part of the pad or brush from the floor surface; the right and left side portions of the body, Rutotomoni provided left and right side portions guard to prevent the spread of the lateral sewage after washing by rotation of the pad or brush, a squeegee frame for supporting the front squeegee, airframe book of It is attached to the body base so that it can swing back and forth via a plurality of link members, and each of these link members moves up and down the link member at the time of advancement and stoppage of the machine body. The axis angle connecting the upper and lower link fulcrums attached to the front is tilted forward by a certain angle from the vertical, and when the aircraft is retracting, each link member is moved forward by the friction force with the floor surface applied to each blade constituting the front squeegee. It is characterized in that it is configured to swing from a tilt to a substantially vertical posture position regulated by a stopper portion .

(2) Further, in the squeegee device for a floor cleaning machine according to claim 2 of the present invention, the front and rear squeegees are arranged along the front part and the rear part of the pad or brush formed in the disk shape. The left and right side guards are alternately attached to the left and right ends of either the front squeegee or the rear squeegee, or the left and right ends of both squeegees. The front and rear squeegees and the left and right side guards surround the outer periphery of the pad or brush.

(3) Further, in the squeegee device for a floor cleaning machine according to claim 3 of the present invention, the front squeegee, an arc-shaped outer blade in which the left and right side guards are connected to both ends, and the outer blade And an arcuate inner blade provided with a space with respect to the front portion of the pad or brush, and the distance between the outer and inner blades. A squeegee chamber was constructed, and the blower suction action was applied to the squeegee chamber so that the washed sewage remaining in the front part of the pad or brush when the machine was retracted was sucked from the floor surface. It is characterized by.

(4) Further, the squeegee device of the floor cleaning machine according to claim 4 of the present invention exerts a suction action from one blower mounted on the fuselage on both the rear squeegee and the front squeegee, It is characterized in that the squeegees on both sides absorb the sewage after washing from the floor surface when the aircraft is moving forward or backward.

( 5 ) Further, in the squeegee device for a floor cleaning machine according to claim 5 of the present invention, the plurality of link members are divided into four sections by the main body base and the squeegee frame arranged at intervals in the front and rear and the left and right. A parallel link structure is formed, and these four-bar parallel link structures are arranged at two line-symmetrical positions on the left and right sides of the disk-shaped pad or brush drive motor, and one link member is Two rows are formed in an integrated lever shape.

  According to the means described in the above (1) and (2), the circumference of the disk-shaped pad or brush is surrounded by the front and rear squeegees and the left and right side guards. The sewage after washing used in the surface washing machine can be prevented from scattering to the periphery due to the rotation of the disk-shaped pad or brush, and the width of the rear squeegee for collecting the sewage after washing can be configured to be small, The width of the entire floor cleaning machine can be reduced.

Further, according to the means described in the above (1), when the floor cleaning machine is retracted, the link member is automatically moved from the forward inclination by the frictional force between the floor surface and the inner and outer blades of the front squeegee and both side guards. By swinging to the vertical position, the front squeegee frame moves downward as a whole and exerts an urging force in the floor direction on each blade of the front squeegee, ensuring that sewage is recovered after washing. Can be done.

Further, according to the means described in (1) above, when the floor cleaning machine moves forward, the link member automatically swings and moves from a substantially vertical posture to a forward inclination, and the entire front squeegee frame moves upward. However, since the pressing force of each blade of the front squeegee against the floor surface is weakened or reduced by the weight of the front squeegee, the operation of the floor surface washing machine at the time of forward movement can be lightened, and the front squeegee Wear of each blade can be reduced.

  According to the means described in (3) above, even when the back surface of the table or the corner of the room is cleaned by moving the floor cleaning machine back and forth during the cleaning operation, it should be clean so that there is no residual wastewater collected after cleaning. Makes it possible to wash. .

  According to the means described in the above (4), since one blower that exerts a suction force on each squeegee chamber of the front and rear squeegees can be configured, an increase in overall cost can be suppressed.

According to the means described in ( 5 ) above, the squeegee frame swings and moves while maintaining the posture parallel to the main body by the link member having the four-bar parallel link structure, and the operation of ( 1 ) is performed. The front squeegee is held in a stable state even when the main body is tilted sideways when moving or replacing the pad, and there is no risk of the rocking part breaking down or coming off. In addition, it is possible to easily realize a front squeegee of a floor cleaning machine that can reliably collect cleaning sewage by a back-and-forth operation.

  As described above, according to the squeegee device of the floor cleaning machine according to the present invention, it is small and has a small turn, and the floor surface can be cleaned and cleaned while efficiently collecting the sewage after cleaning. Useful for small factories, offices and stores.

  Further, in the present invention, in order to ensure the recovery of the washing sewage, the squeegee operation is performed by pressing the squeegee against the floor surface with the rear squeegee when moving forward, and the same squeezing operation with the front squeegee when moving backward. Therefore, the load of operation of the floor cleaning machine does not increase, and the frequency of blade wear does not increase, so that an easy-to-use floor cleaning machine squeegee device can be realized.

  The embodiment of the squeegee device for a floor cleaning machine according to the present invention will be described in detail below with reference to the drawings. FIG. 1 is an external view showing a partial internal configuration of the floor cleaning machine in which the present invention is implemented. 2 is a perspective view showing the base structure of the floor cleaning machine shown in FIG. 1, FIG. 3 is a side view showing the operation of the front squeegee, and FIG. 4 is a floor cleaning in which the present invention is implemented. The bottom view of the machine, FIG. 5 is a block diagram illustrating the operation of the front squeegee and the link lever.

  In FIG. 1, a floor cleaning machine 1 has a storage tank 12 for cleaning water CW and a recovery tank 13 for cleaning sewage DW (hereinafter simply referred to as cleaning sewage DW) inside the machine body 1T. The washing water CW stored in the storage tank 12 is appropriately mixed with a detergent and the like, and the washing water supply electromagnetic valve 14P installed on the bottom surface of the storage tank 12 is selectively operated to pass through the washing water supply hose 14 to the machine body 1T. Is supplied to a disk-shaped pad or brush 6 (hereinafter, simply referred to as a disk-shaped pad 6) from the bottom surface.

  The disk-shaped pad 6 is rotated by the motor 6M to clean the floor surface with the cleaning water CW as a medium. The cleaning surface deposits dirt on the floor surface and the cleaning water CW gradually becomes dirty. In general, the cleaning operation is performed while moving the floor cleaning machine 1 forward, so that the entire surface is collected by the rear squeegee 7 curved in an arc shape, and then the rear suction is arranged at the center of the squeegee. The mechanism collects in the mouth 10 and is collected from the rear suction port 10 into the sewage recovery tank 13 by the action of the suction force of the blower 15 described later.

  The floor cleaning machine 1 is equipped with a powerful blower 15, and the suction force first acts on the blower intake port at the upper end of the blower pipe 15 </ b> B communicating upward from the bottom surface of the sewage recovery tank 13. The air is exhausted to the outside of the floor cleaning machine 1 from 15A. Thus, when the suction force of the blower 15 reaches the sewage recovery tank 13, the sewage recovery tank 13 is in a negative pressure state. As a result, the suction force acts on the rear suction port 10 of the rear squeegee 7 through the sewage recovery hose 16. Will do. The suctioned cleaning sewage DW and the inflow air sucked in a negative pressure state flow into the sewage recovery tank 13 together. However, the cleaning sewage DW falls and accumulates in the sewage recovery tank 13 due to its own weight. Is sucked into the blower 15 through the blower pipe 15B from the blower intake port. In addition, a dust filter and a splash prevention separator (not shown) are replaced at the blower intake port so that splashes of the cleaning sewage DW and the like are not directly sucked into the blower 15. Further, the blower intake port is provided with a float valve (not shown) to prevent the blower 15 from being flooded due to excessive water absorption when the water is full.

  In the case of a normal floor cleaning machine, only one sewage recovery hose 16 is introduced into the sewage recovery tank 13 from the suction port of the rear squeegee 7, but in the embodiment of the present invention, a disk shape is used. A sewage recovery hose 17 is also pulled out from the front suction port 11 of the front squeegee 8 disposed on the front side of the pad 6, and is combined with a sewage recovery hose 16 extending upward in the vicinity of the rear side suction port 10. (The branched pipe is divided into the front and the rear). Therefore, the suction force acting by the blower 15 described above reaches the rear suction port 10 of the rear squeegee 7 and also acts on the front suction port 11 at the same time. In addition, the front squeegee 8 that is curved as a whole is configured to have a sewage suction action.

  As shown in FIG. 4, the rear squeegee 7 and the front squeegee 8 described above are arranged by arranging the inner and outer blades 7A, 7B and 8A, 8B, both of which are curved in a circular arc shape, spaced apart from each other. These squeegee chambers 7X and 8X are spaced apart from each other, and the squeegee chamber 7X faces the rear outer peripheral surface of the disk-like pad 6 with the squeegee chamber 7X facing downward. It is attached to the rear base 17 of the fuselage 1T so as to keep it open. Further, the front squeegee 8 is attached to the front squeegee frame 3 so that the front squeegee chamber 8X faces the front outer peripheral surface of the disk-shaped pad 6 with a certain distance in a state where the squeegee chamber 8X faces downward. Further, the rear suction port 10 and the front suction port 11 described above project from the center of the upper surface of each of the squeegees 7 and 8 so as to communicate with the squeegee chambers 7X and 8X, respectively.

  FIG. 2 shows a base structure of a floor cleaning machine 1 according to an embodiment of the present invention. In FIG. 2, 1L and 1R are the left and right bases of the floor cleaning machine 1 with the front wheels 5 and 5 attached, and 9L and 9R (see FIG. 4) are the left and right sides of the rear and front squeegees 7 and 8, respectively. Left and right side guards attached to the left and right side portions of the front squeegee frame 3 to close the gap (gap) between the both end portions, and these both side guards 9L and 9R are the left and right end portions of the front squeegee 8. On the other hand, it is attached so as to be continuous in the circumferential direction.

  Therefore, most of the outer periphery of the disk-shaped pad 6 is surrounded by the rear and front squeegees 7 and 8 and the left and right side guards 9L and 9R. Is configured to prevent the cleaning wastewater DW from spreading in the lateral direction.

  As described above, the front squeegee frame 3 to which the front squeegee 8 and the left and right side guards 9L and 9R are attached has a shape in which the central portion is cut away so as to avoid the rotating shaft portion communicating with the disk-shaped pad 6 from the motor 6M. When viewed in a plan view with the front side down, the end of the notch at the center is bent upwards on both the left and right sides. Shaft portions 20B for attaching the link lever 20T are provided.

  A link plate 20 and a link lever 20T are rotatably fitted to these shaft portions 20B. The link plate 20 is an oval shape having the same shape on the left and right sides, and has two holes in the longitudinal direction (vertical direction). One of the link plates 20 is fitted to the shaft portion 20B of the bent portion 3Z of the front squeegee frame 3 and rotates. Installed as possible. Further, the link lever 20T is an oblong type like the link plate 20, and is a plate having holes in two longitudinal directions, and the left and right link levers 20T and 20T are connected to the left and right. The connecting lever portion 20K is provided, and the left and right are configured to rotate integrally. Further, as shown in FIG. 5, a stopper portion 20S is formed at the upper end portion of the connecting lever portion 20K.

  Both the link plate 20 and the link lever 20T are fitted with shaft portions 20B and 20B provided in the bent portion 3Z of the front squeegee frame 3 at the lower end side, but the upper end sides of the left base 1L and the right base 1R, respectively. The shafts 20A and 20A attached to the bent portions 1Z and 1Z at the inner end are rotatably fitted. Further, since the left base 1L and the right base 1R are fixed to the bottom of the airframe 1T indicated by a two-dot chain line in the drawing, the left and right bases 1L and 1R are fixed to the airframe 1T in the state of FIG. However, the front squeegee frame 3 is suspended through the link plate 20 and the link lever 20T.

  The left and right bases 1L and 1R have front wheels 5 and 5, and the left and right bases 1L and 1R move together with the airframe 1T. In such a configuration, the front squeegee frame 3 has the left and right bases 1L. , 1R, a link plate 20, and a link lever 20T. The front squeegee frame 3 is swingable in parallel to the left and right bases 1L, 1R.

  In addition, the front squeegee 8 and the left and right side guards 9L and 9R are integrally fixed to the front squeegee frame 3, but the front squeegee 8 and the left and right side guards 9L and 9R are fixed to the floor surface rather than the entire thickness of the front squeegee frame 3. The side guards 9L and 9R protrude, and the protruding portion is only a blade portion made of a flexible material, so that it can be easily bent when a load is applied in the side direction. However, in the state where the whole is placed on the floor surface, the front squeegee frame 3 and the front squeegee 8, the side guards 9L and 9R, other fixing members and part of the load of the sewage recovery hose 16 are added, The material, thickness, and protrusion amount of the flexible blade are set so that the flexible blade portion does not bend only by its own weight.

FIG. 3 shows the operation of the front squeegee 8 in the floor cleaning machine 1 according to the embodiment of the present invention.
(1) of FIG. 3 shows a state when the floor cleaning machine 1 moves forward. This state is substantially the same when the vehicle moves forward and stops. When the floor cleaner 1 tries to move forward as indicated by the white arrow, a slight frictional force is generated between the blades 8A and 8B of the front squeegee 8 and the side guards 9L and 9R between the floor FL. ing. As a result, the blades 8A and 8B and the side guards 9L and 9R of the front squeegee 8 are suspended by the link plate 20 and the link lever 20T with respect to the advancing floor cleaning machine 1 because they try to stay in place due to frictional forces. The lowered front squeegee 8 tries to rotate in an arcuate direction as indicated by an arrow, and as described above, the front squeegee frame 3 and the base portion are four-node parallel links that operate in parallel. The squeegee 8 actually moves forward together with the floor cleaning machine 1 in the state shown in this figure.

  At that time, since the blades 7A and 7B of the rear squeegee 7 are biased to the floor surface FL so as to be slightly bent from the beginning, the sewage is sucked and collected from the rear suction port 10 described above. become. Although the same suction force is acting on the front squeegee 8, the cleaning sewage DW does not accumulate in the front suction port 11 of the front squeegee 8 while the floor cleaning machine 1 is moving forward, and the cleaning sewage from there. DW is not aspirated.

  FIG. 3 (2) shows the operation of the front squeegee 8 when the floor cleaning machine 1 of the present invention moves backward. As shown in the figure, the link plate 20 and the link lever 20T are subjected to a counterclockwise rotational force as viewed in the figure, but after the stopper portion 20S of the link lever 20T comes into contact with the bottom surface portion 1X of the main body, the posture is maintained. Is maintained. At this time, the blades 8A and 8B of the front squeegee 8 move to a position generally lowered in the direction of the floor surface FL as compared with the state of (1) in FIG. 3 (the four-node parallel link is a parallelogram). 1), the blade portions of the front squeegee 8 and the side guards 9L and 9R are biased to the floor surface FL, and the cleaning sewage DW is efficiently and reliably scraped, as shown in FIG. The cleaning sewage DW is sucked from the front suction port 11 and collected in the sewage collection tank 13.

  FIG. 4 shows a view of the embodiment of the present invention as viewed from the bottom, and shows the configuration of the rear squeegee 7 and the front squeegee 8 in detail. In FIG. 4 and FIGS. , 7T indicate guide rollers attached to the left and right sides of the rear squeegee 7.

FIG. 5 is a diagram illustrating the operation of the front squeegee 8 and the link lever 20T according to the embodiment of the present invention, and is a theoretical explanatory diagram for shifting to the state of (2) in FIG.
(1) of FIG. 5 shows a state when the floor cleaning machine 1 starts to retreat. In the drawing, the link plate 20 is omitted for simplification, and the shape of each part is also shown simplified. In the state of FIG. 5 (1), the lower ends of the blades 8A and 8B of the front squeegee 8 are in contact with the floor surface FL, and only the own weight W of the front squeegee frame 3 and the blades 8A and 8B acts on the floor surface. Yes. At this time, the relationship between the upper and lower shaft portions 20A and 20B of the link lever 20T is an attitude inclined by several tens of degrees from the vertical (an attitude inclined forward in the forward direction) as shown in the figure, and the dimensional ratio of a and b Is a state where a is large.

  In this state, the link lever 20T has a drag N acting from the floor surface by its own weight W as shown in the figure, and the friction received from the floor surface FL by the body 1T attempting to move (retract) in the direction of the white arrow. The force μN acts on the lower shaft portion 20B of the link lever 20T in the direction as shown in the figure. In this state, when N · b−μ · N · a <0 in the balanced state of the force centering on the upper shaft portion 20A of the link lever 20T, the link lever The link lever 20T is rotated counterclockwise by the friction component μ · N acting on the lower shaft portion 20B of 20T.

  (2) in FIG. 5 shows that when the airframe 1T moves backward in the direction of the white arrow in that state, the stopper 20S of the link lever 20T rotates until it abuts against the bottom surface 1X of the airframe 1T. The body 1T and the link lever 20T move together in the direction of the white arrow while maintaining the posture. At that time, since a ′ becomes longer than the original a (the lower shaft portion 20B moves in the direction of the floor surface FL), the blade portion of the front squeegee 8 becomes shorter from the original c to c ′. In addition, the front blade is bent as shown in the figure and bent in the direction opposite to the traveling direction, and is strongly biased by the floor surface FL, so that the cleaning sewage DW is surely scraped off.

  Thereafter, when the forward movement is started, if the operation is reversed in the direction from (2) in FIG. 5 to (1) in FIG. 5 (the body 1T moves forward), the action direction of μ · N is reversed. Therefore, the posture returns to the original posture (1) in FIG. 5 and the normal sewage recovery operation is performed by the action of the rear squeegee 7.

  As described above, in the embodiment of the present invention, the front squeegee 8 and the sewage DW that is being washed DW are automatically swung by the link lever 20T only when the front squeegee 8 moves in the backward direction. The side cards 9L and 9R that prevent splashing are moved to the floor surface FL and are energized so that the cleaning waste water DW can be reliably recovered both when the floor cleaning machine 1 is operated forward and backward. Thus, it is possible to realize a floor cleaning machine 1 suitable for cleaning a corner of a room or under a desk in a small factory, office, store, or the like.

  In addition, since the operation of the front squeegee 8 is automatically biting by friction at that time, the link lever 20T and the link plate 20 are simply added without increasing the cost of the equipment. A switching mechanism for back and forth operation is realized, and it is robust because the mechanism is simple, and the range of swinging operation is limited to a range of several tens of degrees. A floor cleaning machine can be provided.

  In the embodiment of the present invention, only the front squeegee 8 uses the automatic biting operation, but a similar mechanism can be employed in the rear squeegee 7. Further, side guards 9L, 9R may be attached to either of the front and rear squeegees 7, 8, and side guards 9L, 9R may be attached alternately from the front and rear squeegees, or both of the front and rear squeegees. It is also possible to attach side guards 9L and 9R from the rear, or it is possible to realize that the front and rear squeegees 7 and 8 are divided into semicircular shapes, and can be applied to various forms. It is possible to operate reliably.

  Further, the link plate 20 and the link lever 20T that cause automatic biting are provided with a swing position adjusting mechanism, or a simple restricting member that restricts the swinging and lifts it up selectively. The body 1T can be moved while the front squeegee 8 is lifted to prevent the blades 8A and 8B of the front squeegee 8 from being worn.

  Further, regarding the adjustment of the swing position, the difference between the state of the floor surface FL and the lubricity of the cleaning water CW containing the detergent at that time is adjusted by adjusting the initial posture of the link lever 20T and the position where the stopper portion 20S is effective. In addition, it is possible to easily adjust and adjust the blades 8A and 8B according to the floor surface, the detergent, the blade, and the like that are normally used by the user in response to the difference in the material of the blades 8A and 8B.

The external view which showed the partial internal structure of the floor surface washing machine provided with the squeegee apparatus which concerns on this invention. The perspective view which showed the base structure of the floor washing machine provided with the squeegee apparatus which concerns on this invention. (1) is the side view explaining operation | movement of the front side squeegee apparatus at the time of advance of the floor washing machine provided with the squeegee apparatus based on this invention, (2) is the side view explaining the operation | movement at the time of the reverse. The bottom view of the floor washing machine provided with the squeegee device concerning the present invention. (1) is a configuration diagram explaining the operation of the front squeegee and the link lever when the floor cleaning machine equipped with the squeegee device according to the present invention moves forward or stops, and (2) explains the operation when moving backward. Diagram.

1 Floor cleaning machine 1T Airframe 1L, 1R Left and right bases 3 Front squeegee frame
4 Rear wheel 5 Front wheel 6 Disc-shaped pad or brush
6M motor 7 rear squeegee 7A inner blade 7B outer blade 7X rear squeegee chamber 8 front squeegee 8A inner blade 8B outer blade 8X front squeegee chamber 9L, 9R side guards 10, 11 front side, rear suction port 12 washing water storage tank 13 Wastewater recovery tank 14 Water supply hose 15 Blower 16 Wastewater recovery hose 20 Link plate 20T Link lever 20S Stopper part 20A, 20B Shaft part FL Floor surface CW Washing water DW Washed wastewater (washing wastewater)

Claims (5)

While advancing the aircraft, water was supplied to the floor surface, the floor surface was cleaned by rotating the pad or brush formed in a disk shape, and the suction force of the blower was used to provide the rear part of the pad or brush. A floor cleaning machine configured to suck up sewage after cleaning with a rear squeegee,
A front squeegee is provided at the front of the aircraft to draw off the washed sewage remaining on the front part of the pad or brush from the floor using the suction force of the blower when the aircraft is retracted. the parts, Rutotomoni provided left and right side portions guard to prevent the spread of the lateral sewage after washing by rotation of the pad or brush,
The squeegee frame that supports the front squeegee is attached to the main body base on the airframe side so as to be swingable back and forth via a plurality of link members, and each of these link members is at the time of advancement and stop of the airframe, The axial angle connecting the upper and lower link fulcrums attached to the main body base and the front squeegee respectively on the upper and lower sides of the link member is inclined forward by a certain angle from the vertical, and is applied to each blade constituting the front squeegee when the body is retracted. A squeegee device for a floor cleaning machine, characterized in that each link member swings from a forward tilt to a substantially vertical posture position regulated by a stopper portion by a frictional force with the floor surface.   Each of the front and rear squeegees is bent in a substantially arc shape along the front and rear portions of the pad or brush formed in the disk shape, and the left and right side guards are formed on the front squeegee. Alternatively, either the left and right ends of either of the rear squeegees or the left and right ends of both squeegees are alternately attached to surround the outer periphery of the pad or brush with the front and rear squeegees and the left and right side guards. The squeegee device for a floor cleaning machine according to claim 1.   The front squeegee is spaced from the arcuate outer blade with the left and right side guards connected to both ends and the inner surface of the outer blade, and to the front portion of the pad or brush. The space between the outer and inner blades is a squeegee chamber, and the air blower sucks the squeegee chamber. The squeegee device for a floor cleaning machine according to claim 1 or 2, wherein the sewage after cleaning remaining in the front part of the pad or brush is sucked from the floor surface when retreating.   Both the rear squeegee and the front squeegee are sucked from one blower mounted on the fuselage so that the squeegees on both sides of the squeegee can be moved to the floor surface when the aircraft is moving forward or backward. The squeegee device for a floor cleaning machine according to claim 1, 2 or 3, wherein the sewage after washing is further sucked. The plurality of link members form a four-bar parallel link structure with the main body base and the squeegee frame arranged at intervals in the front-rear direction, and the four-bar parallel link structure is the disc-shaped pad or brush. 2. The floor according to claim 1 , wherein the left and right rows are arranged in line-symmetric positions with the drive motor interposed therebetween, and the left and right rows of one link member are formed in an integral lever shape. Squeegee device for face washing machine.

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