Upright surface cleaning apparatus

Abstract

The application relates to a vertical surface cleaning device, comprising a cleaning base, a brush roller, a brush roller motor, a fluid distributor and a suction nozzle, the brush roller motor comprising a stator-rotor assembly, a circuit board and a motor output shaft; a vertical machine body, which is rotatably arranged on the cleaning base, comprising a suction motor, a cleaning liquid tank and a dirty liquid tank, the dirty liquid tank and the suction motor being in fluid communication; a dirty liquid input channel between the suction nozzle and the dirty liquid tank; the cleaning base further comprising a motor mounting chamber, a heat dissipation air inlet and a heat dissipation air outlet connected to the motor mounting chamber, the stator-rotor assembly and the circuit board being sealingly arranged in the motor mounting chamber, the motor output shaft being at least partially arranged outside the motor mounting chamber and being in driving connection with the brush roller, the heat dissipation air inlet being in fluid connection with a lower end of a first pipeline, and an upper end of the first pipeline being arranged at the vertical machine body. The application can avoid the situation that water enters the motor mounting chamber from the air inlet when the surface cleaning head is flushed.

Description

Technical Field

[0001] The present invention relates to the technical field of cleaning equipment, in particular to a vertical surface cleaning device. Background Art

[0002] An upright surface cleaning device is a traditional household cleaning appliance that uses a cleaning fluid to clean a surface to be cleaned and recovers the dirty liquid converted from the cleaning fluid from the surface to be cleaned. The upright surface cleaning device generally comprises a surface cleaning head that can move over the surface to be cleaned and an upright body positioned above the surface cleaning head. The surface cleaning head is equipped with a brush roller, a brush roller motor that drives the brush roller, a fluid distributor for distributing cleaning fluid to the brush roller and / or the surface to be cleaned, and a suction nozzle; the upright body is equipped with a suction motor, a cleaning fluid tank, a dirty liquid tank for receiving and storing dirty liquid, and a handle. After completing the cleaning operation, the surface cleaning device needs to empty the dirty liquid from the dirty liquid tank and clean the brush roller, suction nozzle, and other components on the surface cleaning head to prevent contamination by dirty liquid and other contaminants when the cleaning device is idle. Since the surface cleaning head is a component that directly contacts the surface to be cleaned, its shell is often contaminated with dirty liquid during operation, so the user also needs to clean it regularly. In order to reduce the work of disassembling the cleaning head, the user will carry the entire surface cleaning head to a water source for rinsing. This rinsing step can easily cause water to enter the motor, damaging the motor and thus affecting the use of the device. Summary of the Invention

[0003] In order to solve the above technical problem that the motor is damaged due to water ingress when cleaning the surface cleaning head, the object of the present invention is to provide a vertical surface cleaning device that can reduce the ingress of water into the brush roller motor.

[0004] In order to achieve the above-mentioned purpose, the present invention provides the following technical solution: a vertical surface cleaning device, comprising:

[0005] a cleaning base configured to be adapted to move over a surface to be cleaned, the cleaning base comprising a brush roller, a brush roller motor for driving the brush roller to rotate, a fluid distributor for distributing cleaning fluid to the brush roller and / or the surface to be cleaned, and a suction nozzle, the brush roller motor comprising a stator and rotor assembly, a circuit board, and a motor output shaft;

[0006] An upright body, the lower portion of which is rotatably disposed on the cleaning base, the upright body comprising a suction motor, a cleaning liquid tank, and a dirty liquid tank, the dirty liquid tank being in fluid communication with the suction motor;

[0007] A waste liquid input passage, located between the suction nozzle and the waste liquid tank;

[0008] In which, the cleaning base also includes: a motor installation chamber, a heat dissipation air inlet connected to the motor installation chamber, and a heat dissipation air outlet connected to the motor installation chamber, the stator and rotor assembly and the circuit board are sealed and installed in the motor installation chamber, the motor output shaft at least partially extends to the outside of the motor installation chamber and is connected to the brush roller transmission, the heat dissipation air inlet is fluidically connected to the lower end of a first pipe, and the upper end of the first pipe is arranged at the upright body.

[0009] In the above technical solution, preferably, the heat dissipation air outlet is fluidically connected to the dirty liquid input passage.

[0010] Further preferably, the waste liquid input passage comprises a lower passage section located at the cleaning base and an upper passage section located at the upright body, and the heat dissipation air outlet is fluidically connected to the upper passage section via a second pipe. Alternatively, further preferably, the cleaning base further comprises a rotary joint, the lower portion of the upright body being physically coupled to the rotary joint, and the first and second pipes both pass through the rotary joint. Portions of the first pipe and portions of the second pipe located at the rotary joint are brought together.

[0011] In the above technical solution, preferably, the cleaning base includes a base body and a motor upper cover fixedly mounted on a portion of the base body, and the motor installation chamber is defined by a portion of the base body and the motor upper cover.

[0012] More preferably, the heat dissipation air inlet and the heat dissipation air outlet are both located on the upper cover of the motor.

[0013] Or more preferably, a sealing strip is provided at the joint between part of the seat body and the motor upper cover.

[0014] In the above technical solution, preferably, the motor mounting chamber is provided with an axial hole for the motor output shaft to pass through, a sealed bearing is provided in the axial hole, and the motor output shaft passes through the sealed bearing and is sealed with the sealed bearing.

[0015] In the above technical solution, preferably, the upright body is provided with an air inlet communicating with the outside, and the air inlet is in fluid communication with the upper end of the first duct.

[0016] Compared with the prior art, the surface cleaning device provided by the present invention connects the heat dissipation air inlet of the motor installation chamber with the air inlet on the upright body, thereby preventing the motor installation chamber from taking in air from the surface cleaning head located at a low position, thereby preventing water from entering the motor installation chamber from the air inlet when flushing the surface cleaning head; therefore, in this surface cleaning device, the user can directly flush the surface cleaning head without damaging the brush roller motor; and this solution has a simple structure and is easy to implement. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 is a schematic perspective view of the appearance of the surface cleaning device of the present invention;

[0018] Figure 2 This is a schematic diagram of the appearance of the cleaning base of the present invention;

[0019] Figure 3 It is an exploded perspective schematic diagram of the cleaning base of the present invention;

[0020] Figure 4 It is a three-dimensional schematic diagram of the cleaning base of the present invention with the top shell of the base body removed;

[0021] Figure 5 This is a schematic diagram of the internal structure of the cleaning base of the present invention;

[0022] Figure 6 yes Figure 5 Schematic diagram of the decomposition;

[0023] Figure 7 This is a schematic diagram of the connection between the heat dissipation air inlet, the heat dissipation air outlet, the first pipe, and the second pipe of the present invention;

[0024] Figure 8 It is a schematic structural diagram of a motor installation chamber with a brush roller motor installed in the present invention;

[0025] Figure 9 1 is a schematic diagram of the structure of the surface cleaning device of the present invention.

[0026] Wherein: 100, surface cleaning device; 1, upright body; 2, cleaning base; 11, housing; 12, handle; 3, battery pack; 14, user interface; 15, control keys; 110, air inlet; 21, base; 22, top cover; 23, brush roller; 28, rotary joint; 211, bottom housing; 212, top housing; 213, first side wall; 214, second side wall; 216, moving wheel; 25, roller chamber; 251, lower opening; 233, brush roller motor; 24, transmission; 26, motor mounting chamber; 215, motor upper cover; 27. Sealing strip; 2331. Stator and rotor assembly; 2333. Circuit board; 2332. Motor output shaft; 261. Cooling air inlet; 262. Cooling air outlet; 264. Sealed bearing; 263. Shaft hole; 291. First pipeline; 292. Second pipeline; 28. Rotary joint; 31. Cleaning liquid tank; 32. Water delivery pump; 33. Fluid distributor; 34. Infusion channel; 41. Sewage liquid tank; 42. Suction motor; 43. Sewage liquid input passage; 431. Lower passage section; 432. Upper passage section; 44. Suction nozzle. DETAILED DESCRIPTION

[0027] In order to describe the technical content, structural features, achieved purposes and effects of the invention in detail, the technical solutions in the embodiments of the present application will be described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all of the embodiments. In the following description, for the purpose of explanation, many specific details are set forth to provide a detailed description of various exemplary embodiments or implementations of the invention. However, various exemplary embodiments may also be implemented without these specific details or in the presence of one or more equivalent arrangements. In addition, various exemplary embodiments may be different, but are not necessarily exclusive. For example, without departing from the inventive concept, the specific shape, structure and characteristics of the exemplary embodiment may be used or implemented in another exemplary embodiment.

[0028] Figure 1 The present invention illustrates a surface cleaning device 100. This device is a vertical device capable of moving over a surface to be cleaned (e.g., the floor) and performing cleaning operations. The device comprises an upright body 1 and a cleaning base 2 adapted to move over the surface to be cleaned. A cleaning fluid system (not shown) for supplying cleaning fluid and a liquid recovery system for recovering contaminated fluid from the surface to be cleaned are located on both the upright body 1 and the cleaning base 2. The lower portion of the upright body 1 is rotatably connected to the cleaning base 2.

[0029] The upright body 1 includes a housing 11 extending vertically, a handle 12 fixedly connected to the housing 11 and located on the upper side of the housing 11, a battery pack 13 located at the lower rear portion of the housing 11, and a user interface 14 located at the front of the housing 11. The user interface 14 is provided with various status indicators to inform the user of the current status of the surface cleaning device 100. The handle 12 allows the user to hold and operate the surface cleaning device 100. The handle 12 is provided with a number of control keys 15, which allow the user to start and stop the surface cleaning device 100 and select different cleaning modes for cleaning operations. The battery pack 13 is located at the rear of the upright body 1 and provides power to the surface cleaning device 100. The upright body 1 is also provided with an air inlet 110 connected to the outside world and located in the center of the housing 11. In other embodiments, there may be no obvious air inlet structure on the casing, and the air inlet is formed by the seam between the casing and other components installed thereon; the function of the air inlet is to circulate with the outside world so that the outside air can flow freely through this inlet.

[0030] like Figure 2 As shown, the cleaning base 2 is configured to be adapted to move over the surface to be cleaned; it includes a base 21, a top cover 22 detachably attached to the front of the base 21, a brush roller 23 rotatably connected to the front of the base 21 about its own axis, a pair of moving wheels 216 for driving the cleaning base 2 to move over the surface to be cleaned, and a rotary joint 28 mounted at the rear of the base 21. The pair of moving wheels 216 are connected to the rear bottom of the base 21 for relative rotation; the lower portion of the housing 11 of the upright body 1 can be physically coupled to the rotary joint 28.

[0031] like Figure 3 As shown, the base 21 includes a bottom shell 211, a top shell 212, a first side wall 213 and a second side wall 214. The first side wall 213 and the second side wall 214 protrude forward relative to the top shell 212 and together with the top cover 22 define a roller chamber 25, in which the brush roller 23 is accommodated. The roller chamber 25 has a lower opening 251 arranged toward the surface to be cleaned. It should be noted that the lower opening is defined by the lower edge of the front end of the top cover and the lower edge of the base. Therefore, in some embodiments in which the front of the top cover has an opening, the lower opening also includes the opening of the front of the top cover. The lower part of the brush roller 23 passes through the lower opening 251 to contact the surface to be cleaned.

[0032] like Figure 3-6 As shown, the cleaning base 2 is further provided with a brush roller motor 233 for driving the brush roller 23 to rotate. The brush roller motor 233 is located inside the cleaning base 2 and is configured to be in transmission connection with the brush roller 23 via a transmission mechanism 24. The brush roller motor 233 is installed in a motor installation chamber 26 located on the lower side of the top shell 212.

[0033] The motor installation chamber 26 is defined by the rear of the bottom shell 211 and the motor upper cover 215; wherein the motor upper cover 215 is fixedly mounted on the upper side of the rear of the bottom shell 211 by a number of threaded fasteners, and a sealing strip 27 is provided at the joint between the rear of the bottom shell 211 and the motor upper cover 215.

[0034] like Figure 7 As shown, the brush roller motor 233 includes a stator and rotor assembly 2331, a circuit board 2333, and a motor output shaft 2332. In some embodiments, the brush roller motor 233 is also provided with a cooling fan facing the circuit board. The stator and rotor assembly 2331 and the circuit board 2333 (and in some embodiments, the cooling fan) are sealed and mounted within the motor mounting chamber 26. The motor output shaft 2332 partially extends outside the motor mounting chamber 26 and is in transmission connection with the brush roller 23 via the transmission mechanism 24. The motor mounting chamber 26 is provided with a cooling air inlet 261 and a cooling air outlet 262, which communicate with the motor mounting chamber 26. External air enters the motor mounting chamber 26 through the cooling air inlet 261 to dissipate heat and cool the stator and rotor assembly 2331 and the circuit board 2333 of the brush roller motor 233. After heating, this air flows out of the motor mounting chamber 26 through the cooling air outlet 262. The motor mounting chamber 26 is provided with an axial hole 263 for the motor output shaft 2331 of the brush roller motor 233 to pass through. A sealed bearing 264 is provided in the axial hole 263. The motor output shaft 2332 passes through the sealed bearing 264 and is sealed with the sealed bearing 264. The setting of this sealed bearing 264 can effectively prevent external fluid from flowing into the motor mounting chamber 26 through the axial hole 263.

[0035] Continuing with reference to Figures 6-7 , the cooling air inlet 261 and the cooling air outlet 262 are arranged on the motor upper cover 215. A first duct 291 is connected to the cooling air inlet 261, and a second duct 292 is connected to the cooling air outlet 262. The first and second ducts 291 and 292 are positioned together and pass upward through the rotary joint 28, extending into the interior of the housing 11 of the upright body 1.

[0036] like Figure 8 As shown, the cleaning liquid system of the surface cleaning device 100 includes a cleaning liquid tank 31 for storing and supplying cleaning liquid to the outside, a water delivery pump 32 for providing flow power for the cleaning liquid, a fluid distributor 33 for distributing the cleaning liquid to the brush roller 23, and a liquid infusion channel 34 that fluidly connects the fluid distributor 33 and the cleaning liquid tank 31. In this example, the cleaning liquid tank 31 is detachably connected to the housing 11, and the water delivery pump 32 and the fluid distributor 33 are located inside the cleaning base 2 and are configured to be in fluid communication with the liquid infusion channel 33. The liquid infusion channel 34 extends from the interior of the housing 11 to the interior of the cleaning base 2 and is located between the fluid distributor 33 and the cleaning liquid tank 31.

[0037] The waste liquid recovery system includes a waste liquid tank 41 for receiving and storing waste liquid, a suction motor 42 located above the waste liquid tank 41, a suction nozzle 44 connected to the roller chamber 25, and a waste liquid input passage 43 for fluid communication between the suction nozzle 44 and the waste liquid tank 41. The waste liquid tank 41 is detachably connected to the upright body 11 and is located on one side of the solution tank 31. The suction motor 42 is located inside the housing 11 and is configured for fluid communication with the waste liquid tank 31. The suction nozzle 44 is located on the cleaning base 2 and faces the brush roller 23. The suction nozzle 44 is typically shaped like a bell. The waste liquid input passage 43 is configured to extend from the interior of the housing 11 to the interior of the cleaning base 2 and is located between the suction nozzle 44 and the waste liquid tank 41. Specifically, the waste liquid input passage 43 includes a lower passage section 431 located at the cleaning base 2 and an upper passage section 432 located within the housing 11.

[0038] like Figure 8 As shown, the lower end of the first duct 291 is fluidly connected to the heat dissipation air inlet 261. The upper end of the first duct 291 extends into the upright body 1 and is connected to the air inlet 110. Air entering through the air inlet 110 can enter the first duct 291 through the upper end of the first duct 291. The lower end of the second duct 292 is fluidly connected to the heat dissipation air outlet 262, and the upper end of the second duct 292 is fluidly connected to the upper passage section 432 of the dirty liquid input passage 43.

[0039] In this case, by arranging the heat dissipation air inlet 261 and the heat dissipation air outlet 262 that are in airflow communication with the motor installation chamber 26 at the upright body 1, the waterproof level of the cleaning base 2 can be effectively improved. When the cleaning base 2 becomes dirty, even if the cleaning base 2 is directly rinsed with water, the motor will not be damaged, thereby making the cleaning of the cleaning base 2 more convenient.

[0040] The basic principles, main features and advantages of the present invention are shown and described above. It should be understood by those skilled in the art that the present invention is not limited to the above embodiments. The above embodiments and descriptions are merely illustrative of the principles of the present invention. Various changes and improvements may be made to the present invention without departing from the spirit and scope of the present invention. The scope of protection claimed in the present invention is defined by the appended claims, the description and their equivalents.

Claims

1. A vertical surface cleaning device, characterized in that: include: A cleaning base (2) is configured to be adapted to move on a surface to be cleaned, the cleaning base (2) comprising a brush roller (23), a brush roller motor (233) for driving the brush roller (23) to rotate, a fluid distributor (33) for distributing cleaning fluid to the brush roller (23) and / or the surface to be cleaned, and a suction nozzle (44), the brush roller motor (233) comprising a stator and rotor assembly (2331), a circuit board (2333), and a motor output shaft (2332); An upright body (1), the lower part of which is rotatably arranged on the cleaning base (2), the upright body (1) comprising a suction motor (42), a cleaning liquid tank (31) and a dirty liquid tank (41), the dirty liquid tank (41) and the suction motor (42) being in fluid communication; a dirty liquid input passage (43) located between the suction nozzle (44) and the dirty liquid tank (41), the dirty liquid input passage (43) comprising a lower passage section (431) located at the cleaning base (2) and an upper passage section (432) located at the upright body (1); The cleaning base (2) further comprises: a motor mounting chamber (26), a heat dissipation air inlet (261) connected to the motor mounting chamber (26), and a heat dissipation air outlet (262) connected to the motor mounting chamber (26); the stator and rotor assembly (2331) and the circuit board (2333) are sealed and mounted in the motor mounting chamber (26); at least a portion of the motor output shaft (2332) extends outside the motor mounting chamber (26) and is transmission-connected to the brush roller (23); the heat dissipation air inlet (261) is fluidically connected to the lower end of a first pipe (291); the upper end of the first pipe (291) is arranged at the upright body (1); and the heat dissipation air outlet (262) is fluidically connected to the upper passage section (432) via a second pipe (292).

2. The upright surface cleaning device according to claim 1, wherein: The cleaning base (2) further comprises a rotary joint (28), the lower portion of the upright body (1) is physically coupled to the rotary joint (28), and both the first pipe (291) and the second pipe (292) pass through the rotary joint (28).

3. The upright surface cleaning device according to claim 2, wherein: Part of the first pipe (291) and part of the second pipe (292) located at the rotary joint (28) are brought together.

4. The upright surface cleaning device according to claim 1, wherein: The cleaning base (2) comprises a base body (21) and a motor upper cover (215) fixedly mounted on a portion of the base body (21), and the motor mounting chamber (26) is defined by a portion of the base body (21) and the motor upper cover (215).

5. The upright surface cleaning device according to claim 4, wherein: The heat dissipation air inlet (261) and the heat dissipation air outlet (262) are both located on the motor upper cover (215).

6. The upright surface cleaning device of claim 4, wherein: A sealing strip (27) is provided at a joint between part of the seat body (21) and the motor upper cover (215).

7. The upright surface cleaning device of claim 1, wherein: The motor mounting chamber (26) is provided with an axial hole (263) for the motor output shaft (2332) to pass through, and a sealed bearing (264) is provided in the axial hole (263). The motor output shaft (2332) passes through the sealed bearing (264) and is sealed with the sealed bearing (264).

8. The upright surface cleaning device of claim 1, wherein: An air inlet (110) communicating with the outside is provided on the upright body, and the air inlet (110) is in fluid communication with the upper end of the first pipe (291).

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