The pace of modern life is faster and faster, the working pressure of people is also increasing, and the phenomenon of returning to the home in the morning and evening is very frequent, so people can spend less time to clean the household hygiene, such as the floor cleaning, and a lot of floor cleaning equipment, such as an intelligent floor sweeper, a floor washing machine, a floor sweeping robot and the like, appear on the market, and are used for cooking the household hygiene, even the office hygiene and the public hygiene. However, the existing household intelligent floor washing machine cannot really liberate the two hands of the user, for example, the existing sweeping and mopping integrated intelligent floor washing machine needs the user to detach for manual cleaning and drying after the rolling brush or the mop is dirty, or needs the user to frequently replace the rolling brush or the mop, so as to prevent the mop from smelling.
Among the current scheme of mopping, clean water tank is equipped with the clear water under the normal condition, the machine during operation carries the rag on round brush/brush dish to come the cloth of higher authority to moisten from the clean water tank through electromagnetic pump or air pump with the clear water, moist cloth can be wiped and washed ground under round brush or brush dish drive, along with going on of cleaning, the cloth can be more and more dirty, if not in time wash the cloth on round brush/brush dish and dry, cause the round brush to smell easily, breed bacterium and gathering cockroach etc..
The Chinese utility model CN207886170U discloses a mechanism with a floor-mopping effect for an intelligent floor-sweeping machine, which comprises a roller bracket, a gear box, a roller, a cleaning sponge, a sewage tank, a spray pipe and a wringing roller; the utility model discloses a gear box drives the cylinder and is clockwise roll, and the rolling in-process of cylinder, spray pipe can be sprayed clean water on clean sponge. When the cleaning sponge sprayed with water is in the rolling process, the sponge is continuously extruded by the squeezing roller, the water for cleaning the sponge can permeate into the sewage recovery tank inside the roller through the holes in the roller, and the sewage collected in the sewage tank is pumped to the sewage tank through the water pump, so that the cleaning machine can be repeatedly used without frequent manual disassembly and cleaning, the performance of wet mopping of the floor sweeping machine is enhanced, and the experience of a user is improved.
Chinese utility model CN210931220U discloses a cleaning device for adapting to a hand-held floor scrubber, comprising a bearing component, wherein the bearing component is provided with a supporting part for supporting the hand-held floor scrubber; the bearing component is also provided with a liquid storage tank matched with the cleaning roller of the handheld floor cleaning machine, and the liquid storage tank is used for containing cleaning liquid so that the handheld floor cleaning machine can realize self cleaning by rotating the cleaning roller in the liquid storage tank. The hand-held floor washing machine is matched with the cleaning device, so that the cleaning roller of the hand-held floor washing machine can be automatically cleaned by utilizing the rotation of the cleaning roller.
In the robot of sweeping the floor of prior art, the cleanness of round brush generally dries naturally through artifical manual dismantlement, washing back, perhaps direct artifical cloth of changing the round brush realizes, can't really liberate user's both hands, and time cost and material cost increase moreover. In addition, the cleaning of the sweeping robot in the prior art usually adopts the mode that the rolling brush is directly soaked in water and then is dewatered through extrusion or a scraper, and a special cleaning box is mostly required to be arranged in the body of the floor washing machine or outside the body of the floor washing machine, so that the floor washing machine is large in occupied space, poor in cleaning effect and incapable of being dried in time, and is particularly easy to cause smelliness, mildewing or peculiar smell, and adverse effects are caused on the environment and health.
Therefore, there is a need in the art for a more efficient, effective, clean, and thorough roller brush self-cleaning and dehydration drying scheme to maintain the cleanliness and hygiene of the roller brush, thereby freeing the user in a real sense.
The information included in this background section of the specification of the present invention, including any references cited herein and any descriptions or discussions thereof, is included for technical reference purposes only and is not to be considered subject matter which would limit the scope of the present invention.
SUMMERY OF THE UTILITY MODEL
The present invention has been developed in view of the above-mentioned and other more recent concepts. The utility model discloses aim at solving above technical defect and other problems.
The utility model discloses an one of the purpose aims at making intelligent floor cleaning machine can clean dirty round brush and independently dry voluntarily under the condition that does not need artificial intervention to prevent that the round brush from going mildy and smelly, breed bacterium and gathering cockroach etc. liberate user's both hands simultaneously, reduce user's time cost and material cost.
In view of the above and other objects, according to one aspect of the present invention, there is provided a self-cleaning-drying assembly for an intelligent floor washing machine, comprising: rolling and brushing; a clean water tank configured to supply water to the roll brush via a water supply line; a suction mechanism connected to the sewage recovery channel and configured to suction the sewage of the drum brush through the sewage recovery channel; a sewage tank communicating with the sewage recovery channel and configured to accommodate the sewage recovered by the suction mechanism; a roller brush driving mechanism for driving the roller brush to rotate; a central control system; a refill seat with a heating element provided separately from the intelligent scrubber, wherein the central control system is configured to: controlling the intelligent floor washing machine to park on a refill seat with a heating element, which is arranged separately from the intelligent floor washing machine, so that the roller brush is basically aligned with the heating element; controlling water supply from the clean water tank to the drum brush via a water supply passage in the intelligent floor washing machine and driving the drum brush to rotate at a first rotational speed for a first time; controlling the suction mechanism to suck at a first gear substantially synchronously with the rotation of the first rotating speed of the rolling brush, and sucking the sewage thrown out of the rolling brush into the sewage tank to perform self-cleaning of the rolling brush; controlling to stop supplying water to the drum brush after the drum brush is rotated at the first rotational speed for the first time, driving the drum brush to rotate at a second rotational speed for a second time, and controlling the suction mechanism to suck at a second gear substantially synchronously with the rotation of the drum brush at the second rotational speed; and controlling the heating element to start heating subsequently, and drying the roller brush.
According to an embodiment, the central control system is further configured to control the drum brush to rotate at a third rotational speed during the heating of the heating element, wherein the third rotational speed is less than the first rotational speed and the second rotational speed.
According to an embodiment, the central control system is further configured to control the suction mechanism to suck at a third gear substantially synchronously with the rotation of the third rotation speed of the drum brush.
According to an embodiment, the suction power in the third gear is smaller than the suction power in the first gear.
According to an embodiment, the suction power in the second gear is greater than the suction power in the first gear.
According to an embodiment, the second rotational speed is greater than the first rotational speed.
According to an embodiment, the central control system is further configured to: after the rolling brush rotates at the second rotating speed for a set second time, controlling to detect the instant weight of the rolling brush; when the instant weight is less than or equal to the set dry weight value of the rolling brush, controlling to stop the rotation of the rolling brush at the second rotating speed, and entering a heating program of the heating element; and when the instant weight is higher than the set dry weight value, driving the rolling brush to continuously rotate at the second rotating speed for a set fourth time, and then returning to the step of detecting the instant weight of the rolling brush.
According to an embodiment, the self-cleaning-drying assembly further comprises a weight measuring device detecting an instantaneous weight of the roller brush.
According to an embodiment, the central control system is further configured to control the roller brush and the suction mechanism to remain off during the heating of the heating element.
According to an embodiment, the suction mechanism is a fan and the roller brush drive mechanism is a motor.
According to another aspect of the present invention, there is also provided an intelligent floor cleaning machine-recharging seat set, comprising an intelligent floor cleaning machine body, a recharging seat having a heating element for drying by a roller brush, and a self-cleaning-drying assembly as described above.
According to the utility model discloses a still disclose one kind and be used for intelligent scrubber to fill seat again, include: a base; and a stand extending upwardly from the base; the recharging seat is provided with a charging port, and the base is provided with a heating element for heating and drying the roller brush of the intelligent floor washing machine.
According to an embodiment, the heating element is selected from at least one of a PTC heating element, a heat generating tube, a heat generating fuse, an infrared heating lamp and an ultraviolet lamp.
According to one embodiment, the heating element is disposed in a recess in the base, the recess being positioned to align with the position of the roll brush when the intelligent scrubber is parked on the base.
According to one embodiment, the base is designed with a ramp and a platform.
According to an embodiment, the platform is provided with a pit for the roller of the intelligent floor washing machine to stop.
Further embodiments of the present invention are also capable of achieving other advantageous technical effects not listed, which other technical effects may be partially described hereinafter, and which are anticipated and understood by those skilled in the art upon reading the present invention.
The section "summary" is intended to introduce a selection of concepts and options in a simplified form that are further described below in the detailed description of the invention to assist the reader in understanding the invention. This summary is not intended to identify key features or essential features of the claimed subject matter, nor is it intended to be used to limit the scope of the claimed subject matter. All of the above features are to be understood as exemplary only and further features and objects, both as to structure and method, may be gleaned from the present disclosure. A more complete appreciation of the features, details, utilities, and advantages of the present invention will be provided in the following written description of various embodiments of the present invention, illustrated in the accompanying drawings, and defined in the appended claims. Accordingly, many limiting explanations of the disclosure may not be understood without further reading the entire specification, claims and drawings.
The details of one or more embodiments of the invention are set forth in the accompanying drawings and the description below. Other features, objects, and advantages of the invention will be apparent from the description and drawings, and from the claims.
It will be apparent to those skilled in the art that various modifications and variations can be made in the embodiments of the present invention without departing from the scope or spirit of the disclosure. For instance, features illustrated or described as part of one embodiment, can be used with another embodiment to yield a still further embodiment. Accordingly, the present disclosure covers such modifications and variations as come within the scope of the appended claims and their equivalents.
Also, it is to be understood that the phraseology and terminology used herein is for the purpose of description and should not be regarded as limiting. For example, the use of "including," "having," or "provided" and variations thereof herein is meant to encompass the items listed thereafter and equivalents thereof as well as additional items.
Before describing the embodiments of the present invention in detail, those skilled in the art will understand that, in understanding the present invention, the term "intelligent floor cleaning machine" should be understood and read in a broad sense, and various types of floor cleaning robots, including automatic cleaning machines, intelligent floor mopping machines, intelligent floor cleaning robot devices, intelligent floor cleaning all-in-one machines, intelligent dust suction devices, robot dust collectors, and other robots capable of completing cleaning, dust collection and/or floor cleaning, as long as they have the function of cleaning/cleaning the floor as described in the present invention, and belongs to the scope covered by the present invention. It will of course be further appreciated by those skilled in the art that the scope of the present invention is defined by the appended claims.
It will be understood that when an element is referred to as being "secured to," "connected to," "mounted to" or "disposed on" another element, it can be directly or indirectly secured to the other element.
The present invention will be described in detail with reference to the following embodiments in conjunction with the accompanying drawings.
The technical scheme of an embodiment of the complete machine of the floor washing machine of the utility model mainly comprises: the system comprises a machine body system, a water supply system, a cleaning system, a sewage recovery system, a power system and a central control system.
The fuselage system may include various plastic, hardware, mounting brackets, and the like.
The water supply system may include a water tank, a pump body, a pipeline, etc.
The cleaning system may comprise a floor washing roller 4, a roller drive mechanism 5, etc.
The sewage recovery system may include piping, a sewage tank 2, a suction mechanism 3, a water guard 8, and the like.
The power system may include a driving force transmission mechanism, a driving motor, a battery, etc. for running of the machine.
The central control system may include an operating system capable of intelligent path planning, strategic cleaning, execution of rolling brush self-cleaning, and self-drying control logic.
The designed floor washing machine can realize intelligent running through the power system and the central control system, clear water is supplied to the cleaning system through the self-contained water supply system in the running process to wet and wash the floor, and the sewage left after the floor washing and the original accumulated water and/or garbage on the ground can be recovered into the sewage tank 2 through the sewage recovery system. Through setting up 1 that sprinkle the clear water washing ground from the clear water tank of taking and set up sewage case 2 and retrieve sewage rubbish, the utility model discloses an intelligence floor cleaning machine can continuously carry out the ground cleanness effectively.
According to the concept of an embodiment of the utility model, the intelligent floor washing machine can execute the self-cleaning-drying control logic of the rolling brush 4 under the control of the central control system, and realize the self-cleaning and drying of the rolling brush 4.
The utility model discloses an intelligence floor cleaning machine is according to the settlement of center control system, accomplishes the back at the clean operation in ground, can carry out independently cleanness and independently dry to the round brush regularly or on an irregular basis to can keep the clean health of floor cleaning machine round brush, prevent that the round brush is dirty, breed the bacterium and produce the peculiar smell, etc.. Therefore, the user does not have to manually clean the roll brush elements or roll brush material, such as sponge, cloth, etc., on the replacement roll brush/brush tray, thereby freeing the user's hands and reducing the user's time and material costs.
Through the self-contained water supply system and the sewage recovery system, the water supply system of the intelligent floor washing machine uniformly sprays clean water in the clean water tank 1 on a rolling brush element or a rolling brush material of the rolling brush 4, such as sponge, cloth and the like, meanwhile, the rolling brush 4 is driven by the rolling brush driving mechanism 5 to rotate at a certain rotating speed, the rotating speed and the rotating time are enough to throw most of sewage, especially most of sewage, from the rolling brush material by utilizing centrifugal force, meanwhile, the suction mechanism 3 synchronously works, negative pressure is formed in the sewage recovery channel, and most of sewage on the rolling brush 4, especially the sewage thrown out under the centrifugal action is sucked into the sewage tank 2, so that the sewage recovery and the synchronous cleaning of the rolling brush element or the rolling brush material of the rolling brush 4 are completed.
As shown in fig. 1, a ground washing operation principle of an intelligent ground washing machine according to an exemplary embodiment of the present invention is illustrated. Wherein, the clean water stored in the clean water tank 1 flows to and sprinkles on the rolling brush elements such as cloth of the ground washing rolling brush 4 through the pump body, in the rolling cleaning process of the intelligent floor washing machine, the rolling brush elements such as cloth wetted by the clean water cleans the floor in a manner of mopping or scrubbing such as mop, the sewage formed after cleaning the floor is thrown out due to the rotating centrifugal action of the rolling brush, and together with the other sewage on the floor and on the rolling brush 4, is recycled into the sewage tank 2 under the suction action of the suction mechanism 3 such as a fan, the gas in the mixed air flow entering the sewage tank 2 is discharged through the suction mechanism 3, and the sucked and entrained sewage exists in the sewage tank 2 under the obstruction of the water baffle plate 8 so as to avoid the water entering the suction mechanism 3 to cause the fault or damage of the suction mechanism 3.
Roller brush self-cleaning-drying
According to an exemplary embodiment of the present invention, a roller brush self-cleaning-drying control scheme of an intelligent floor washing machine is shown in fig. 2.
The rolling brush self-cleaning-drying operation of the intelligent floor washing machine comprises a rolling brush cleaning process (or called rolling brush self-cleaning program) and a rolling brush drying process (or called rolling brush self-drying program).
More specifically, in the rolling brush self-cleaning procedure, water can be uniformly sprayed to the rolling brush element of the rolling brush, such as cloth, through the water supply system (of course, the intelligent floor washing machine can be set to not supply water when the floor washing operation is just finished) to soften and clean the cloth of the rolling brush and dissolve/entrain the dirt contained therein, the rolling brush is driven to rotate by the rolling brush driving mechanism 5, the dirt in the dirt is thrown out by centrifugal force to partially enter the dirt recovery channel, and the dirt is substantially synchronously sucked to the dirt tank by the suction mechanism, so that the purpose of cleaning the cloth of the rolling brush is achieved. After the self-cleaning is finished, the water supply system can be closed, the rolling brush is driven by the rolling brush driving mechanism 5 to rotate so as to further centrifugally throw out the water, and the water can be synchronously sucked by the suction mechanism to help the suction and the recovery of the sewage.
During self-cleaning, as shown in fig. 2 and 7, the central control system controls the intelligent scrubber to run back to the refill seat 40, park by climbing the platform 44 via the ramp 41, and place its wheels in the pit 46, thus keeping the intelligent scrubber parked, with the heating element 42 for brush drying aligned with the brush 4 directly above it, as shown in fig. 7; the central control system controls the roller brush driving mechanism 5 to drive the roller brush 4 to rotate at a first rotating speed, and the first rotating speed and the rotating time of the rotation are enough to throw out the substantial majority of sewage from the cloth by using centrifugal force; substantially simultaneously therewith, the suction means 3 (e.g. fan, etc.) is operated in the first gear, creating a negative pressure in the waste-water recovery channel, sucking waste water into the waste-water tank 2, self-cleaning.
Fig. 3 exemplarily shows a simplified diagram of a roller brush self-cleaning assembly according to an exemplary embodiment of the present invention. Figure 4 schematically illustrates a cross-sectional view of a roll brush self-cleaning assembly.
According to an embodiment, the roll brush self-cleaning assembly may comprise: clear water tank 1, sewage case 2, round brush 4, round brush actuating mechanism 5, suction mechanism 3 and center control system. The clean water tank 1 is configured to supply clean water to the roll brush 4 via a water supply path. The suction mechanism 3 may be configured to suck the sewage of the floor and the drum brush 4 to the sewage tank 2 via the sewage recovery channel 6. The central control system may be configured to execute a rolling brush self-cleaning logic scheme to control the intelligent scrubber machine to achieve self-cleaning of the rolling brush 4.
The suction mechanism 3 may communicate with the waste water tank 2 through a suction mechanism airflow path 7, and a water guard 8 may be provided in the waste water tank 2 near or near an inlet of the suction mechanism airflow path 7.
The roll brush self-cleaning assembly may further include a water pump 9, and clean water is supplied to the roll brush 4 through the water pump 9 via a water supply path. The roll brush self-cleaning assembly may further comprise a water sprinkling portion 10, the clean water may be connected to the water sprinkling portion 10 via a water pump 9 and a hose, and the water sprinkling portion 10 sprinkles the water towards the roll brush 4. The roller brush self-cleaning assembly may further comprise a shield 11, e.g. transparent, provided in the upper half of the roller brush 4.
When the intelligent floor washing machine washes the ground, the water outlet of the clean water tank 1 is connected to the water inlet of the water pump 9 through a hose, and then the water outlet of the water pump 9 is connected to the water spraying part 10 through a hose. The rolling brush 4 can be composed of soft hair and hard glue and rotate clockwise, the periphery of the upper part of the rolling brush 4 can be covered by a protective cover 11, such as a transparent protective cover, wherein a slightly larger gap can be arranged at the area A of the lower side of the rolling brush 4 corresponding to the inlet of the sewage recovery channel 6, so that the airflow can conveniently flow into the sewage, the gap is smaller at the area B of the lower side of the rolling brush 4 opposite to the area A, and the purpose is to ensure that the area A has enough wind power to absorb the sewage and absorb the sewage into the sewage recovery channel 6.
When the rolling brush 4 carries out the automatically cleaning during operation, can sprinkle water to the rolling brush 4 and wet, soften and clean the cloth on rolling brush surface, the rolling brush 4 can be rotatory under the higher rotational speed by the drive of rolling brush actuating mechanism 5 under the control of center control system, carries out the centrifugation and gets rid of water, and the gear that the fan can be different simultaneously sucks, produces negative pressure and suction air current, carries out the automatically cleaning.
After the intelligent floor cleaning machine performs self-cleaning for a period of time, the water supply system of the intelligent floor cleaning machine can be closed, and the rolling brush drying process can be entered according to the control logic set by the central control system of the intelligent floor cleaning machine.
Before describing the roller brush drying process in detail, an exemplary recharging seat for an intelligent floor washing machine and a roller brush heating and drying device thereof according to the present invention will be described with reference to fig. 5 to 7.
As shown in fig. 5-6, a schematic diagram of a recharging stand (or "charging stand", "charging dock", "base station") 40 for an intelligent floor washing machine according to an exemplary embodiment of the present invention is shown, which is provided with a design for drying the roller brush 4, including a heating mechanism for drying the roller brush. In this way, the recharging seat 40 not only has the function of recharging the traditional intelligent floor washing machine, but also additionally has the function of drying the rolling brush by additionally arranging the heating mechanism 42 for drying the rolling brush.
The refill seat 40 includes a base 48, and a stand 47 mounted on the base 48 to extend vertically upward. The stand 47 may be a separate component from the base 48 or may be integral. In one aspect, the stand 47 may serve the role of a "control cabinet" providing a power supply arrangement and circuit configuration for the intelligent scrubber, as well as other ancillary features, such as a charging port 49. On the other hand, according to this example, a storage compartment 45 can also optionally be provided above the stand 47, for example for storing maintenance accessories and spare parts of the intelligent scrubber, such as a rolling brush accessory, etc.
Base 48 is designed to facilitate parking the intelligent scrubber for charging and brush drying. For example, as shown, the base 48 is designed with a ramp 41 to facilitate the intelligent scrubber climbing up, and a platform 44 in smooth transition with the ramp 41 for the intelligent scrubber to park. In order to facilitate accurate alignment and position fixing during charging and rolling brush drying, pits 46 (generally 2 or 3, and the number of the pits can be matched with that of the rollers) matched with the number and shape of the rollers of the intelligent floor washing machine are further arranged on the platform 44, so that the rollers can be parked and held during charging and rolling brush drying.
Furthermore, it is important that a recess 43 for arranging a heating element 42 for drying the roll brush, for example a PTC heated ceramic, is provided on the base 48 at a position corresponding to the position of the roll brush when the intelligent floor washing machine is parked. Generally, the recess 43 is designed such that the position of the roll brush when the intelligent floor washing machine is parked is directly above the recess 43 and the shape and size of the recess also substantially matches the shape of the roll brush, e.g. typically the roll brush is elongated, then the recess 43 is also shaped in a substantially corresponding elongated channel. This groove 43 may also be configured in another alternative example to have the additional function of storing, collecting, rolling brush effluent.
The heating element 42 may be, for example, a heat-generating tube, a heat-generating fuse, an infrared heating lamp, an ultraviolet lamp, a PTC heating element, such as PTC ceramic, a constant temperature heating PTC thermistor. The PTC heating element is preferable because it has the characteristics of constant temperature heating, no open fire, power saving and safety, and the condition that the roller brush is baked out due to overhigh heating temperature can not occur.
The roller brush drying process is described in detail below.
After the roller brush completes the self-cleaning sequence, as shown in FIG. 7, the intelligent scrubber is now at the refill seat 40. During the drying procedure of the rolling brush, firstly, the central control system controls the lower rolling brush driving mechanism 5 to drive the rolling brush 4 to rotate at a second rotating speed.
Substantially synchronously with the rotation of the roller brush 4, the suction mechanism 3, for example a fan, can be operated in the second gear for suction. This second rotational speed is generally greater than the first rotational speed, preferably much greater than the first rotational speed, for example, may approach or reach full speed of the roller brush.
Then, the heating element 42 for drying the roll brush is energized and started to heat the roll brush 4, thereby drying the roll brush. As shown in fig. 2, the blower 3 and the drum brush 4 are turned off and do not operate while drying.
As an alternative, however, in order to facilitate uniform heating and drying of the roller brush 4 by the heating element 42, the central control system may control the roller brush 4 to rotate at a third rotation speed during heating and drying, the third rotation speed being generally set to be much smaller than the first rotation speed and the second rotation speed, for example, set in the range of 10-60 rpm.
In addition, it is further optional that the fan 3 is operated in the third gear to perform suction substantially in synchronization with the rotation of the third rotation speed of the drum brush 4 in order to accelerate drying. The power of the third gear is generally set to be smaller than the power of the first gear and the second positioning.
For the effect of faster drying, at this moment, the suction power of the third gear can be set to be larger than that of the first gear, so that the suction wind speed of the fan is higher, and the effect of taking away water vapor and assisting drying through wind power evaporation is better.
After the heating element 42 heats the roller brush 4 rotating at the third rotation speed for a set period of time, or after sensing that the roller brush 4 has been substantially dried by the sensing device, the roller brush driving mechanism 5 and the suction mechanism 3 are turned off, and the self-drying of the roller brush is completed. At this time, the intelligent floor washing machine can enter a standby state or enter a floor washing mode or enter a charging mode.
According to specific settings, the central control system can control the intelligent floor washing machine to perform charging operation during, before and after the intelligent floor washing machine performs the drying program.
In the drying program, the first, second and third rotation speeds and operation times, and the operation parameters in the first, second and third gears, such as the rotation speed and the operation time, etc., may be parameters preset in a central control system. Of course, it is fully understood by those skilled in the art that the real-time adjustment/setting may be performed by the central control system according to the detected drying condition of the rolling brush, for example, by detecting the drying data through the sensor.
According to the logic scheme of rolling brush self-cleaning-drying of an exemplary embodiment of the present invention, the logic scheme may further include rolling brush drying status detection. Whether drying is completed or not can be evaluated and judged by providing a gravity sensor or other type of weight measuring device on the drum brush 4 to monitor the weight of the drum brush 4 and comparing it with the set weight of the drum brush 4. Of course, it may also be detected whether the drying is completed in other alternative ways.
Through the self-cleaning and drying of the rolling brush, manual operation can be reduced, the hands of a user are really liberated, and meanwhile the time cost and the material cost of the user can be reduced, so that the purposes of preventing the rolling brush from smelling, breeding bacteria and gathering insects such as cockroaches are achieved, and the hands of the user are liberated, and the time cost and the material cost of the user are reduced.
The foregoing description of several embodiments of the invention has been presented for the purposes of illustration and description. The foregoing description is not intended to be exhaustive or to limit the invention to the precise features and/or forms disclosed.
Obviously, many modifications and variations are possible in light of the above teaching and are within the scope of the invention. The scope of the present invention is limited only by the appended claims.