Patent Publication Number: US-9844311-B2

Title: Floor washer cleaning device and floor washer

Description:
FIELD OF THE INVENTION 
     The present invention relates to the technical field of floor washers, and more particularly to a floor washer cleaning device and a floor washer. 
     BACKGROUND OF THE INVENTION 
     Environmental hygiene is an important factor affecting life quality; therefore, with continuous increase of requirements for life quality of the people, correspondingly, requirements for the environmental hygiene are higher and higher. However, in modern times, working pressure of the people increases day by day, and they urgently need to be freed from heavy cleaning work. Thus, many devices configured to clean floors appear so as to improve the environmental hygiene; the commonly used ones of these devices include cleaners, automatic mopping machines, sweeping machines, and floor washers. 
     A suction nozzle of a conventional floor washer is formed by a front rubber sheet and a rear rubber sheet, the two rubber sheet are respectively pasted on a rear of a cleaning device, and a gap between the front rubber sheet and the rear rubber sheet is small; the function of the front rubber sheet is to obstruct wind and increase a pressure of the suction nozzle, and an interference fit is formed between the rear rubber and a floor so as to centrally recycle garbage such as waste water, impurities, and so on. Since the gap between the front rubber sheet and the rear rubber sheet is small, as a result, garbage with a large volume is unable to enter the suction nozzle and thus is difficult to be cleaned; moreover, after being used for a long time, garbage is prone to pile at the suction nozzle and thus obstruct the suction nozzle, the cleaning quality is severely affected, and the user experience effect is debased. Furthermore, a roller brush in a cleaning device of this type of floor washer is usually a structure comprising a roller and a brush, which may result in that swept long hairs are very prone to be twined in the brush and are difficult to be cleaned. 
     SUMMARY OF THE INVENTION 
     A purpose of the present invention is to provide a floor washer clearing device and a floor washer, which are aimed at the problem in the prior art that a small gap of a suction nozzle of a conventional floor washer results in that garbage with a large volume is unable to enter the suction nozzle and thus is difficult to be cleaned. 
     An embodiment of the present invention provides a floor washer cleaning device, which is mounted inside an opening cavity arranged at a bottom of a dustbin of a floor washer; the floor washer cleaning device comprises a roller brush assembly rotatably arranged inside the opening cavity, and a scraping board fixed at the bottom of the dustbin and located at an edge of a side of a bottom of the opening cavity; the scraping board, an inner wall of the opening cavity, and the roller brush assembly cooperatively enclose to form a negative pressure cavity communicating with the dustbin, and a suction nozzle communicating with the negative pressure cavity is formed between an inner side of the scraping board and the roller brush assembly. 
     Furthermore, a top portion of the opening cavity defines a garbage entrance, and the garbage entrance communicates with the dustbin and the negative pressure cavity respectively. 
     Furthermore, the garbage entrance communicates with an air passage configured to allow garbage and waste water to enter the dustbin, and a top end of the air passage communicates with the dust bin. 
     Furthermore, the floor washer cleaning device further comprises a water spraying assembly arranged at the bottom of the dustbin and located at an edge of another side of the bottom of the opening cavity, and the water spraying assembly communicates with a clear water tank of the floor washer. 
     Furthermore, an aluminum strip is fixed at the bottom of the dustbin by screws and located at an edge of a side of the bottom of the opening cavity, and the scraping board is fixed on the aluminum strip. 
     Furthermore, the roller brush assembly includes a roller, a support transmission mechanism detachably connected with two ends of the roller, and a plurality of soft rubber brushes arranged at an outside wall of the roller surroundingly; the soft rubber brushers are distributed to extend along a length direction of the outside wall of the roller. 
     Furthermore, the plurality of soft rubber brushes are distributed uniformly and spacedly along a circumference of the outside wall of the roller on the outside wall of the roller. 
     Furthermore, the soft rubber brushes are distributed to bend and extend along the length direction of the outside wall of the roller, and a bending portion of each soft rubber brush forms a groove part. 
     Furthermore, the support transmission mechanism includes a transmission head and a support head that are arranged at two ends of the roller respectively, the support head is fixedly connected with a support base arranged at one end of the opening cavity, and the transmission head is transmittingly connected with a power assembly arranged at another end of the opening cavity. 
     Another embodiment of the present invention further provides a floor washer, which comprises a main body, and a clear water tank and a dustbin that are arranged inside the main body; a bottom of the dustbin has an opening cavity opening towards a floor; the floor washer further comprises the aforesaid floor washer cleaning device, and the floor washer cleaning device is arranged inside the opening cavity and faces the floor. 
     On the basis of the aforesaid technical solutions, in the floor washer cleaning device and the floor washer provided by the embodiments of the present invention, the scraping board is arranged at a side of the opening cavity of the dustbin, the scraping board, the inner wall of the opening cavity, and the roller brush assembly cooperatively enclose to form the negative pressure cavity communicating with the dustbin, and the suction nozzle communicating with the negative pressure cavity is formed between the inner side of the scraping board and the roller brush assembly, such that garbage with a large volume can enter the negative pressure cavity via the suction nozzle and further enter the dustbin. In this way, effective recycling of garbage with a large volume is realized, the recycling range is enlarged, and thus efficiency and quality of cleaning are improved. 
    
    
     
       BRIEF DESCRIPTION OF THE DRAWINGS 
         FIG. 1  is a cut-away schematic view of a floor washer provided by an embodiment of the present invention; 
         FIG. 2  is an enlarged schematic view of the part A shown in  FIG. 1 ; 
         FIG. 3  is a bottom schematic view of a floor washer provided by an embodiment of the present invention; 
         FIG. 4  is a bottom schematic view of an integrated structure comprising a dustbin and a clear water tank of an embodiment of the present invention; 
         FIG. 5  is a disassembled schematic view of a roller brush assembly of an embodiment of the present invention; 
         FIG. 6  is a cut-away schematic view of a roller brush assembly of an embodiment of the present invention; 
         FIG. 7  is a cut-away schematic view along the B-B cutting direction shown in  FIG. 6 . 
     
    
    
     DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT 
     In order to make the purposes, technical solutions, and advantages of the present invention be clearer, the present invention will be further described in detail hereafter with reference to the accompanying drawings and embodiments. It should be understood that the embodiments described herein are only intended to illustrate but not to limit the present invention. 
     It needs to be noted that if a component is described as “fixed at” or “arranged at” another component, it can be arranged at the another component directly or via an intermediate component existing simultaneously. If a component is described as “connected with” another component, it can be connected with the another component directly or via an intermediate component existing simultaneously. 
     Moreover, it needs to be further noted that the position terms used in the embodiments of the present invention, such as “left”, “right”, “top”, “bottom”, “front”, “rear”, and the like, are only mutually relative concepts or take a normal using state of a product as reference, and should not be regarded as having limitations. The implementation of the present invention will be described in detail hereinafter with reference to the embodiments. 
     As shown in  FIGS. 1-7 , an embodiment of the present invention provides a floor washer cleaning device  1 , and the floor washer cleaning device  1  is mounted inside an opening cavity  20  of a bottom of a dustbin  2  of a floor washer. In particular, the floor washer cleaning device  1  can comprise a roller brush assembly  11  and a scraping board  12 , wherein, the roller brush assembly  11  is rotatably arranged in the opening cavity  20  of the bottom of the dustbin  2 , the scraping board  12  is fixed at the bottom of the dustbin  2 , and the scraping board  12  is located at a rear edge of the bottom of the opening cavity  20 . Here, the scraping board  12 , an inner wall of the opening cavity  20 , and the roller brush assembly  11  cooperatively enclose to form a negative pressure cavity  110 , and the negative pressure cavity  110  communicates with the dustbin  2 ; moreover, a suction nozzle  1100  is formed between an inner side of the scraping board  12  and the roller brush assembly  11 , and the suction nozzle  1100  communicates with the negative pressure cavity  110 . When the floor washer washes a floor, under the scraping function of the scraping board  12 , waste water and garbage (including garbage with large volumes) on the floor can be suctioned into the negative pressure cavity  110  via the suction nozzle  1100 , and are finally suctioned into the dustbin  2 . 
     As detailed above, in the floor washer cleaning device  1  provided by the embodiment of the present invention, the scraping board  12  is arranged at a side of the opening cavity  20  of the dustbin  2 , the scraping board  12 , the inner wall of the opening cavity  20 , and the roller brush assembly  11  cooperatively enclose to form the negative pressure cavity  110  communicating with the dustbin  2 , and a suction nozzle  1100  communicating with the negative pressure cavity  110  is formed between the inner side of the scraping board  12  and the roller brush assembly  11 ; a size of the suction nozzle  1100  is larger than that of a conventional suction nozzle formed by two rubber sheets, in this way, garbage with a large volume and waste water can be suctioned into the negative pressure cavity  110  via the suction nozzle  1100  and further enter the dustbin  2 . In this way, effective recycling of garbage with a large volume and waste water is realized, the recycling range is enlarged, and thus cleaning efficiency and cleaning quality are improved. 
     Furthermore, in an embodiment of the present invention, a top portion of the opening cavity  20  defines a garbage entrance  200 , and the garbage entrance  200  communicates with the dustbin  2  and the negative pressure cavity  110  respectively. In particular, an air passage  3  is vertically arranged above the garbage entrance  200 , a bottom end of the air passage  3  is aligned with the garbage entrance  200  and communicates with the garbage entrance  200 , and a top end of the air passage  3  communicates with the dustbin  2 . In this way, the negative pressure cavity  110 , the air passage  3 , and the dustbin  2  form an intercommunication. Here, the air passage  3  is configured to allow garbage and waste water to enter the dustbin  2 . Of course, according to actual situations and specific requirements, in other embodiments of the present invention, the negative pressure cavity  110  can also communicate with the dustbin  2  by other methods, and the methods are not uniquely limited here. 
     Furthermore, in an embodiment of the present invention, the floor washer cleaning device  1  further comprises a water spraying assembly  13 , the water spraying assembly  13  is arrange at the bottom of the dustbin  2 , and the water spraying assembly  13  is located at an edge of a front side of the bottom of the opening cavity  20 . Here, the water spraying assembly  13  communicates with the clear water tank  5  of the floor washer. Here, the water spraying assembly  13  is configured to spray washing water onto a floor to be washed. Of course, according to actual situations and specific requirements, in other embodiments of the present invention, the floor washer cleaning device  1  can further comprise other components. 
     Furthermore, in an embodiment of the present invention, an aluminum strip  14  is fixed at the bottom of the dustbin  2  by screws, the aluminum strip  14  located at an edge of a front side of the bottom of the opening cavity  20 , and the scraping board  12  is sleeved in the aluminum strip  14 . In production and machining, a water tank is formed by one-step injection molding firstly, then the scraping board  12  is fixed by the aluminum strip  14 , and thus the aluminum strip  14  is fixedly assembled onto the dustbin  2  by screws. Of course, according to actual situations and specific requirements, in other embodiments of the present invention, the scraping board  12  can also be fixed at the bottom of the dustbin  2  by other methods, and the methods are not uniquely limited here. 
     Furthermore, in an embodiment of the present invention, a bottom part of the roller brush assembly  11  exposes from the bottom opening of the opening cavity  20  and contacts a floor to be washed. The roller brush assembly  11  can include a roller  111 , a plurality of soft rubber brushes  112 , and a support transmission mechanism  113 , wherein, the roller  111  is rotatably arranged in the opening cavity  20 , the plurality of soft rubber brushes  112  are arranged at an outside wall of the roller  111  surroundingly, and the brushers  112  are distributed to extend along a length direction of the outside wall of the roller  111  (or parallel to a central axis direction of the outside wall of the roller  111 ) on the outside wall of the roller  111 . The support transmission mechanism  113  is detachably connected with two ends of the roller  111 , and it is configured to support the roller  111  such that the roller  111  can rotate in the opening cavity  20 . Here, the soft rubber brush  112  is preferably an elastic soft rubber sheet having certain rigidity. When the roller  111  rotates, the soft rubber brushes  112  arranged on the outside wall of the roller  111  surroundingly rotate along with the rotation of the roller  111 ; at the same time, the soft rubber brushes  112  continuously brush the floor, long hairs on the floor can be rolled up, some of the long hairs can be suctioned into the dustbin  2 , additionally, some long hairs reach two sides of the soft rubber brush  112 . In this way, when the floor washer stops working, the roller brush assembly  11  can be detached, and the hairs remaining thereon can be removed. 
     As described above, in this embodiment of the present invention, the aforesaid roller brush assembly  11  has the plurality of soft rubber brushes  112 , which are arranged on the outside wall of the roller  111  surroundingly, have certain rigidity, and are shaped as elastic soft rubber sheet, and the soft rubber brushes  112  are distributed to extend along the length direction of the outside wall of the roller  111  on the outside wall of the roller  111 . In this way, the roller  111  surrounded by the plurality of soft rubber brushes  112  is not prone to be twined with long hairs, and the rotation of the roller  11  can drive the long hairs to move towards the two ends of the roller  111 , so that the long hairs can be removed by detaching the roller brush assembly  11 . When sweeping a floor with long hairs, the long hairs on the floor are rolled up; some of the long hairs are suctioned into the dustbin  2 , moreover, some of the long hairs reaches the soft rubber brushes  112 ; when the floor washer stops working, the roller brush assembly  11  can be detached and the hairs remaining thereon can be removed. Compared with cleaning of conventional brushes, the hairs on the roller brush assembly  11  of this embodiment are easier to be removed, in this way, the user experience effect is improved, and at the same time the structure of the roller brush assembly  11  is protected. 
     In an embodiment of the present invention, the plurality of soft rubber brushes  112  are distributed uniformly and spacedly along a circumference of the roller  111  on the outside wall of the roller  111 . In this way, when the roller  111  rotates, the sweeping effect is more uniform, and thus the sweeping effect is improved. Of course, according to actual situations and specific requirements, in other embodiments of the present invention, the plurality of soft rubber brushes  112  can also be distributed on the outside wall of the roller  111  in other manners, and the manners are not uniquely limited here. 
     Furthermore, in an embodiment of the present invention, the brushes  112  are distributed to bend and extend along the length direction of the outside wall of the roller  111  on the outside wall of the roller  111 . In particular, the soft rubber brushes  112  are distributed to bend and extend as V-shaped on the outside wall of the roller  111  and along the length direction of the outside wall of the roller  111  (or along a direction that is parallel to a central axis of the outside wall of the roller  111 ), and a bending portion of each soft rubber brush  112  forms a groove part  1120 . The groove part  1120  is just the V-shaped bending portion. Here, the soft rubber brush  112  shaped as the elastic soft rubber sheet is provided with the groove part  1120  and can generate deformation, such that it is suitable for both large and small garbage. Of course, according to actual situations and specific requirements, in other embodiments of the present invention, the plurality of soft rubber brushes  112  can also be distributed on the outside wall of the roller  111  in other manners, and the manners are not uniquely limited here. 
     Furthermore, in an embodiment of the present invention, the support transmission mechanism  113  can include a transmission head  1131  and a support head  1132 , and the transmission head  1131  and the support head  1132  are respectively arranged at two ends of the roller  111 . In particular, the support head  1132  is arranged at one end of the roller  111  and is fixedly connected with a support base (not shown in the drawings) arranged at one end of the opening cavity  111 , moreover, the transmission head  1131  is transmittingly connected with a power assembly (not shown in the drawings) arranged at another end of the opening cavity  20 . In this way, the power assembly drives the transmission head  1131  to rotate, and the roller  111  synchronously rotates along with the transmission head  1131 ; at the same time, the support head  1132  at one end of the roller  111  supports the roller  111 . Here, both the transmission head  1131  and the support head  1132  can be detached from the two ends of the roller  111 , in this way, although some hairs twines on the two ends of the roller  111 , as long as the transmission head  1131  and the support head  1132  are detached, the hairs can be removed, this is fast and convenient. Of course, according to actual situations and specific requirements, in other embodiments of the present invention, the roller brush assembly  11  can also include other components, and the components are not uniquely limited here. 
     As shown in  FIGS. 1-7 , and embodiment of the present invention provides a floor washer, the floor washer comprises a main body  4 , and a clear water tank  5  and a dustbin  2  arranged inside the main body  4 ; a bottom of the dustbin  2  has an opening cavity  20  opening towards a floor; in this embodiment, the floor washer further comprises the aforesaid floor washer cleaning device  1 , and the floor washer cleaning device  1  is arranged inside the opening cavity  20  and faces the floor. 
     In this embodiment of the present invention, washing water is sprayed onto the floor or the soft rubber brushes  112  via the water spraying assembly  13 . When the floor washer moves forward, the soft rubber brushes  112  rotate along with the roller  111 , such that garbage and waste water enter the dustbin  2  through the air passage  3  after passing through the suction nozzle  1100  and the negative pressure cavity  110 , and the rest of the garbage and waste water is pushed forward by the scraping board  12 ; since an interference fit with a certain height is formed between the scraping board  12  and the floor, in this way, the purpose of recycling waste water and garbage by one-way ventilation can be achieved by the rotation of the soft rubber brushes  112 . Since there is certain space between the soft rubber brushes  112  and the inner wall of the opening cavity  20 , when the soft rubber brushes  112  rotate along with the roller  111 , a vacuum cavity (i.e., the negative pressure cavity  110 ) is formed, such that a speed of an airflow increases, and the purposes of ventilation, drainage, and suctioning garbage are achieved. Moreover, whether the floor washer moves forward or backward, waste water and garbage will move from the soft rubber brushes  112  to the scraping board  12 , and both of them can effectively enter the negative pressure cavity  110  through the gap (i.e., the suction nozzle  1100 ) between each soft rubber brush  112  and the scraping board  12 ; through the air passage  3 , the waste water and the garbage are centrally recycled into the dustbin  2 . As described above, the floor washer adopts the floor washer cleaning device  1 , centralizes flows of wind, reduces loss of airflow, and centralizes garbage and recycles waste water in an opening manner, such that garbage with large volumes and waste water can be suctioned into the negative pressure cavity  110  via the suction nozzle  1100 , and finally enter the dustbin  2 ; in this way, effective recycling of garbage with large volumes and waste water is realized, and the recycling range is enlarged; whether the floor washer moves forward or backward, it can work effectively and improve efficiency, such that the cleaning quality is improved. 
     The aforesaid embodiments are only preferred embodiments of the present invention, but the protection scope of the present invention are not limited by these embodiments. Any technician skilled in the art can easily conceive various equivalent modifications, replacements, and improvements within the technical range disclosed by present invention, and these modifications, replacements, and improvements should be all included in the protection scope of the present invention. Therefore, the protection scope of the present invention should take the protection scope of the claims as the standard.