Portable cleaning device

Abstract

The utility model provides portable cleaning device belongs to electric dust collection cleaning device field of animal hair etc., include: casing, be equipped with carding cavity, surface is equipped with exhaust window, roll brush, set up in carding cavity, the clean surface can pass the clean opening of this carding cavity contact the surface to be cleaned, drive motor, be used for driving roll brush rotation, contain: motor main part and pivot, electric fan, contain fan blade, be used for forming from clean opening flow into, and from the dust collection airflow that flows out of exhaust window, dust cup, set up in the air path of dust collection airflow, be located the upstream of electric fan, be used for filtering and collecting the dirt in airflow, battery package, be used for driving motor and electric fan power supply, the straight line distance of the barycenter equipped with fan blade and the barycenter of roll brush is L1, the straight line distance of the barycenter of motor main part and the barycenter of roll brush is L2, then L2>L1. The utility model has the outstanding advantages of time -saving, labor -saving, low noise, low fever, small, portable, high -efficient hair removal and convenient to use.

Description

Technical Field

[0001] This utility model relates to an electric vacuum cleaning device for animal hair, etc., and more specifically to a portable cleaning device. Background Technology

[0002] Many people enjoy keeping pets such as cats and dogs. However, after close interactions with pets, such as cuddling, playing, and grooming, a large amount of pet hair easily adheres to the surfaces of clothing, sofas, and other fabrics. Because of their unique scaly structure, this shed pet hair easily becomes entangled and adheres firmly to fabric fibers, making it difficult to remove by simply patting or blowing it away.

[0003] In particular, in emergency situations such as before leaving the house, users often find their clothes covered in pet hair. Conventional cleaning methods, such as using adhesive parts (like tape or stickers), are disposable, which is not only time-consuming and laborious but also requires continuous purchase, increasing usage costs and generating a lot of waste, which is not environmentally friendly. If a lint brush (such as EP1885229B1) is used, users need to manually and repeatedly roll it back and forth over small areas, which is time-consuming and laborious for cleaning large areas of clothing.

[0004] CN118121111A introduces a surface cleaning device for cleaning pet hair, which uses an AC vacuum cleaner and an electric roller brush to clean and collect pet hair from surfaces such as mattresses and fabric sofas. Compared to manual rolling, this device increases the cleaning frequency through the high-speed rotation of the roller brush, and improves the collection effect by sucking in the hair with a vacuum cleaner. However, it is difficult and strenuous for users to carry the device around; moreover, the power cord can easily trip the user's hands or body and limit the distance that can be moved; in addition, the device is not portable and cannot be used anytime and anywhere.

[0005] Therefore, the market urgently needs a small, portable cleaning device that can remove hair efficiently, save time and effort, and is easy to use, in order to solve the common problems faced by pet lovers in their daily lives. Summary of the Invention

[0006] This invention was developed to solve the above-mentioned problems, and aims to provide a portable cleaning device that is time-saving, labor-saving, efficient in hair removal, and easy to use.

[0007] This utility model provides a portable cleaning device, comprising: a housing with a combing chamber inside and an exhaust window on the surface; a roller brush disposed in the combing chamber, the cleaning surface of the roller brush being able to contact the surface to be cleaned through the cleaning opening of the combing chamber; a drive motor for driving the roller brush to rotate, comprising: a first motor body and a first rotating shaft; an electric fan comprising fan blades for forming a suction airflow that flows in from the cleaning opening and out from the exhaust window; a dust cup disposed in the airflow path of the suction airflow, located upstream of the electric fan, for filtering and collecting dirt in the airflow; and a battery pack for powering the drive motor and the electric fan; wherein, let the straight-line distance between the center of gravity of the fan blades and the center of gravity of the roller brush be L1, and the straight-line distance between the center of gravity of the first motor body and the center of gravity of the roller brush be L2, then L2 > L1.

[0008] According to the portable cleaning device of this utility model, due to the above structure, the airflow path of the suction air is shortened as much as possible, effectively reducing negative pressure loss and allowing the air energy to act more fully, efficiently, and evenly on the roller brush. This not only improves cleaning efficiency and effect (high hair removal rate / low residue rate) but also shortens cleaning time.

[0009] More importantly, the significant improvement in wind energy utilization efficiency has made it possible to use smaller and smaller electric wind turbines. This has led to a series of optimizations: the overall size of the turbine can be further reduced, while operating noise, energy consumption, and battery heat generation are also significantly reduced.

[0010] In addition, the compact and lightweight design of the whole machine allows users to easily lift it and move it flexibly on their body or any surface to be cleaned, achieving convenient cleaning anytime and anywhere without distance restrictions.

[0011] In summary, the wireless portable cleaning device of this utility model has outstanding advantages such as saving time and effort, low noise, low heat generation, small size, portability, efficient hair removal, and ease of use.

[0012] In this invention, the cleaning surface is the area on the outer surface of the roller brush that can contact and clean the surface to be cleaned (such as a surface with hair, dust, or other dirt attached). Specifically, the cleaning surface includes: a structure (hereinafter referred to as a raised structure) extending / protruding outward from the roller surface (away from the roller axis), such as bristles (single filaments or columnar shapes, etc.), brush strips, bristle tufts, electrostatic strips, rubber sleeves containing bristles or brush strips, etc., that directly contact the dirt; the cleaning surface may also include: a relatively flat structure on the outer periphery of the roller for contacting the dirt, or a surface that is slightly concave relative to the raised structure. The flat / concave structure is formed between the raised structures. After the raised structure bends and deforms upon contact with the surface to be cleaned, the flat / concave structure can contact the dirt and play a cleaning role to a certain extent. The cleaning surface being able to contact the surface to be cleaned through the cleaning opening of the combing chamber means that, in the working state, at least a portion of the cleaning surface extends or protrudes from the cleaning opening, or at least a portion of the surface to be cleaned slightly enters the cleaning opening, thereby allowing the cleaning surface and the surface to be cleaned to make contact. Portability refers to the ease with which users can carry the entire machine (not a single component) indoors or outdoors. Users can easily hold and lift the entire machine (off the ground) with one hand and move it anywhere without limitation in distance or range. The straight-line distance between two points on two structures is the shortest straight-line distance connecting the two points.

[0013] In addition, preferably, L2 ≥ 2 × L1.

[0014] Preferably, the portable cleaning device provided by this utility model may also have the following features: the housing includes a combing section and a handle connected to the combing section for holding the portable cleaning device with one hand; the combing section has a combing cavity; and at least part of the drive motor is disposed in the handle. This configuration allows the portable cleaning device to be smaller in size and shape while ensuring efficient airflow and unobstructed air circulation, making it easier to operate, carry, and store. It also provides better stability and avoids affecting or interfering with the rotation of the roller brush.

[0015] Preferably, the portable cleaning device provided by this utility model may also have the following features: the drive motor transmits kinetic energy to the roller brush through a transmission assembly, and the structure extending from the first rotating shaft to the roller brush in the transmission assembly is denoted as the transmission component; let the plane containing the cross-section of the transmission component be the interface, then this interface divides the portable cleaning device into two sides, denoted as side A and side B respectively. The electric fan and roller brush are located on side A, and the main unit of the drive motor, the handle, and the battery pack are located on side B. This arrangement allows the air path to be minimized, maximizing the efficiency of wind energy (the efficiency of wind energy in removing dirt), thereby improving the time-saving, labor-saving, low-noise, and low-heat effects, and further reducing the overall size, making it easier to operate, carry, and store. Ease of carrying means easy placement in small storage areas such as clothing pockets, bags, car storage bags, and storage compartments. At the same time, this design also balances the center of gravity, making it easier and more stable for the user to hold or operate.

[0016] Preferably, the portable cleaning device provided by this utility model may also have the following feature: when point X is a point on the center of gravity, geometric center, or outer surface, it satisfies the following: if the shortest straight-line distance between point X1 of the fan blade and point X3 of the roller brush is X13, and the shortest straight-line distance between point X2 of the first motor body and point X3 of the roller brush is X23, then X23 > X13. This setting allows the air path to be shorter, thereby further improving wind energy efficiency, thus improving the time-saving, labor-saving, low-noise, and low-heat effects, and further reducing the overall size.

[0017] Preferably, the portable cleaning device provided by this utility model may also have the following feature: when point X' is a point on the center of gravity, geometric center, or outer surface, it satisfies the following: if the shortest straight-line distance between point X'1 of the electric fan and point X'3 of the roller brush is X'13, and the shortest straight-line distance between point X'2 of the drive motor and point X'3 of the roller brush is X'23, then X'23 > X'13. This setting makes the air path shorter, improves wind energy efficiency, and thus improves the time-saving, labor-saving, low-noise, and low-heat effects, and further reduces the overall size.

[0018] Preferably, the portable cleaning device provided by this utility model also features the following characteristic: at least 2 / 3 (structural volume) of the first motor body is located inside the handle. This arrangement allows the portable cleaning device to achieve the smallest overall size or shape while ensuring maximum wind energy efficiency and unobstructed airflow, resulting in a compact structure that is easier to operate, carry, and store. Simultaneously, this design further balances the center of gravity, making it easier and more stable for the user to hold or operate.

[0019] Preferably, the portable cleaning device provided by this utility model may also have the following features: the housing includes a combing section and a handle connected to the combing section for one-handed operation of the portable cleaning device; the combing section has a combing cavity; the extension line of the first rotating shaft passes through the electric fan, dust cup, handle, and battery cell; or, the extension line of the electric fan rotating shaft passes through the drive motor, dust cup, handle, and battery cell. More preferably, the extension line of the electric fan rotating shaft passes through the handle along the length direction rather than the width direction. This arrangement makes the structure compact.

[0020] Preferably, the portable cleaning device provided by this utility model may also have the following features: the electric fan is located between the dust cup and the drive motor, and both the electric fan and the dust cup are located above the roller brush. This arrangement simplifies assembly and ensures smooth and reliable wiring of the power transmission wires, while maximizing wind energy efficiency and ensuring unobstructed airflow, resulting in a smaller overall size or shape.

[0021] Preferably, the portable cleaning device provided by this utility model may also have the following features: the transmission component is located between the electric fan and the first motor body, and the electric fan is located above the roller brush; the electric fan includes: fan blades, a second body, and a second rotating shaft connecting the second body and the fan blades; the first rotating shaft and the second rotating shaft are parallel to each other, or in other words, the rotating shaft of the electric fan and the driving motor are parallel to each other. This arrangement makes the structure compact.

[0022] Preferably, the portable cleaning device provided by this utility model may also have the following feature: in the portable cleaning device, the roller brush is projected upward along a direction perpendicular to the cleaning opening, the projection of the electric fan overlaps with the projection of the roller brush, and the projection of the first motor body does not overlap with the projection of the roller brush. This arrangement makes the structure compact.

[0023] Preferably, the portable cleaning device provided by this utility model also has the following feature: the distance between the electric fan and the air outlet window is no more than 1 cm. This arrangement makes the structure more compact. Attached Figure Description

[0024] Figure 1 This is a front view of the portable cleaning device in an embodiment of this utility model; Figure 2 This is a three-dimensional representation of the portable cleaning device in an embodiment of the present invention. Figure 1 ; Figure 3 This is a three-dimensional representation of the portable cleaning device in an embodiment of the present invention. Figure 2 ; Figure 4 This is a three-dimensional representation of the portable cleaning device in an embodiment of the present invention. Figure 3 ; Figure 5This is a cross-sectional view of the portable cleaning device in an embodiment of this utility model; Figure 6 This is a schematic diagram showing the positional relationship of the center of gravity of each structure within the portable cleaning device in an embodiment of this utility model; Figure 7 This is a schematic diagram showing the positional relationship of the axes of various structures within the portable cleaning device in an embodiment of this utility model; Figure 8 This is a schematic diagram showing the internal structural positional relationship of the portable cleaning device in an embodiment of this utility model; Figure 9 This is a schematic diagram of the portable cleaning device after the dust cup is opened in an embodiment of this utility model; Figure 10 This is a schematic diagram of the portable cleaning device in the cleanup state in an embodiment of this utility model. Detailed Implementation

[0025] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection, an electrical connection, or a connection that allows communication between them; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication between two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0026] To make the technical means, creative features, objectives and effects of this utility model easy to understand, the following embodiments, in conjunction with the accompanying drawings, will specifically illustrate the portable cleaning device of this utility model.

[0027] <Example> like Figures 1-8 As shown, this embodiment provides a portable cleaning device 100 that can efficiently remove pet hair and other dirt adhering to surfaces such as clothing, sofas, curtains, and cushions. The portable cleaning device 100 includes a housing 11, a roller brush assembly 12, a drive motor assembly 13, a transmission assembly 14, an electric fan assembly 15, a dust cup 16, a battery pack 17, a power switch 18, and a charging port 19.

[0028] The housing 11 is the outer shell of the portable cleaning device 100, and is hollow inside. The housing 11 includes a combing section 111 and a handle 112. A combing cavity is formed inside the combing section 111, and an exhaust window 111a is opened on the upper surface of the combing cavity, and a cleaning opening 111b is opened on the lower surface. In this embodiment, the exhaust window 111a includes multiple elongated exhaust holes. The handle 112 is connected to the combing section 111 and is used to allow the user to hold and operate the portable cleaning device 100 with one hand. Holding and operating with one hand means that the user can lift (lift off the ground) the portable cleaning device 100 (the whole machine) with one hand, suspend it in the air, and move it to remove hair from the clothing worn by the user or other surfaces to be cleaned. At the same time, the hand that lifts the whole machine can also operate the power switch 18. In this utility model, the handle 112 does not contain the combing section 111. When projected along a direction perpendicular to the roller axis 121d, the projection of the handle 112 and the projection of the roller 121a do not overlap, and the projection of the handle 112 and the projection of the combing section 111 also do not overlap. The outer diameter (or maximum width) of the handle 112 is smaller than the maximum outer diameter (or maximum width) of the entire machine, and the length of the handle 112 is not less than twice the ratio of the outer diameter to the maximum width of the handle 112. In this embodiment, the combing chamber is equipped with a roller brush assembly 12, a transmission assembly 14, an electric fan assembly 15, and a dust cup 16.

[0029] The roller brush assembly 12 is disposed in the lower layer of the combing chamber. The roller brush assembly 12 includes a roller brush 121 and an end cap 122 for attaching and detaching the roller brush. The roller brush 121 can clean dirt from the surface to be cleaned by rotation. The roller brush 121 includes a rotatable roller 121a and a cleaning unit 121b mounted on the roller 121a. Furthermore, the roller brush 121 has a cleaning surface 121c, which can contact the surface to be cleaned through a cleaning opening 111b. The cleaning surface 121c can be the surface area on the roller 121a and the cleaning unit 121b that can contact and clean dirt. In this embodiment, the outer periphery of the roller 121a is surrounded by the cleaning unit 121b; therefore, the cleaning surface 121c is the outer surface of the cleaning unit 121b, and the roller 121a does not contain the cleaning surface 121c. The cleaning unit 121b is made of a soft material and can be one or more combinations of bristles, bristle strips (or sheets), electrostatic strips, rubber sleeves, etc., made of rubber, plastic, or bristles. The bristles can be filamentous, cylindrical, or clustered. The cleaning unit 121b can be installed by bristle planting, insertion, fitting, bonding, or fastening. In this embodiment, the cleaning unit 121b uses a soft rubber sleeve, and the outer surface of the sleeve has rows of outwardly extending columnar bristles. During operation, at least a portion of the cleaning surface 121c of the cleaning unit 121b facing the cleaning opening 111b can extend or protrude outward from the cleaning opening 111b, thereby contacting hair and other dirt on the surface to be cleaned.

[0030] like Figure 5As shown, the drive motor assembly 13 includes a drive motor 131, circuit components for regulating the operation of the drive motor 131 (which are prior art, such as circuit boards and wires, and will not be described in detail), and a first housing 132. The drive motor 131 is used to drive the roller brush 121 to rotate and includes a first motor body 131a and a first rotating shaft 131b. The first motor body 131a includes a stator and a rotor, but does not include the housing. At least a portion of the drive motor 131 is disposed within the handle 112. In this embodiment, at least 3 / 4 of the first motor body 131a is located within the handle 112. Figure 5 The drive motor 131 and the electric fan 151 are both simplified overall diagrams. Since the structures of the drive motor 131 and the electric fan 151 are existing technologies, the structures of each component are not drawn separately.

[0031] The transmission assembly 14 is used to transmit the kinetic energy of the drive motor assembly 13 to the roller brush 121. The transmission assembly 14 includes a shaft spline 141, a transmission member 142, a transmission head 143, a bearing 144, and a transmission wheel 145. The shaft spline 141 is disposed around the first rotating shaft 131b. The transmission member 142 extends from the first rotating shaft 131b to the roller brush 121 and is used to connect or drive the first rotating shaft 131b and the roller brush 121. The transmission member 142 can be a belt, gear, coupling, etc.; in this embodiment, the transmission member 142 is a belt. The inner side of the transmission member 142 is provided with a meshing or fitting structure that matches the shaft spline 141 and the transmission wheel 145. One end of the transmission member 142 is sleeved on the shaft spline 141 and meshes or fits with the shaft spline 141; the other end is sleeved on the transmission wheel 145 of the transmission head 143 and meshes or fits with the transmission wheel 145. The front end of the transmission head 143 enters the interior of the roller 121a and engages with it, while the rear end extends out of the roller 121a. A transmission wheel 145 is provided around the rear end. A guide shaft is provided in the middle of the transmission head 143, extending a certain distance into the roller 121a along the axis of the brush axis 121d; alternatively, this guide shaft may not be provided. Bearings 144 are provided at both the front and rear ends of the brush 121 to support and limit the brush 121 when it rotates at high speed with the transmission assembly 14. The transmission assembly 14 and its specific structure are common existing technologies and will not be described in detail here.

[0032] like Figures 5-7As shown by the dashed line, let the plane containing the cross-section of the transmission component 142 be the interface Sa (a boundless plane perpendicular to the horizontal direction or the direction of the axis 121d of the roller brush 121 / parallel to the rotation direction of the transmission component 142). This interface Sa divides the portable cleaning device 100 into two sides, denoted as side A and side B. The electric fan assembly 15 and the roller brush 121 are located on side A, and the first motor body 131a, handle 112, and battery pack 17 are located on side B. In this embodiment, a belt divides the portable cleaning device 100 into front and rear sides. The electric fan assembly 15 and the roller brush 121 are located on the front side of the belt, and the first motor body 131a, handle 112, and battery pack 17 are located on the rear side of the belt.

[0033] The electric fan assembly 15 includes an electric fan 151, circuit components for regulating the operation of the electric fan 151 (which are prior art, such as drive circuit boards and wires, and will not be described in detail), and a second housing 152. The electric fan 151 is used to create a suction airflow that flows in from the cleaning opening 111b and out from the exhaust window 111a. Figure 5 As shown, the suction airflow enters through the cleaning opening 111b along the air path R, passes sequentially through the roller brush 121, dust cup 16, and electric fan 151, and is then discharged to the external environment through the exhaust window 111a. The electric fan 151 includes an air inlet 151a, an air outlet 151b, fan blades 151c, a second motor body 151d, and a second rotating shaft 151e. The second motor body 151d includes a second stator and a second rotor, but does not include the outer casing. The second rotor drives the fan blades 151c to rotate coaxially via the second rotating shaft 151e, thereby agitating the air and generating a suction airflow. In this invention, "fan blades" refers to an impeller containing multiple blades, but does not include the outer casing (i.e., the shroud). The shroud is structurally part of the second outer casing 152. Therefore, when determining the center of gravity of the fan blades 151c, only the impeller itself is considered, and it is unrelated to the shroud. The electric fan 151 is located between the dust cup 16 and the drive motor 131. The air inlet 151a of the electric fan faces the dust cup 16 (front of the whole machine), and the air outlet 151b of the electric fan faces the drive motor 131 or the handle 112 (rear of the whole machine).

[0034] like Figures 5-9As shown, the dust cup 16 is disposed in the airflow path R of the suction airflow, upstream of the electric fan 151, and is used to filter and collect dirt in the airflow. In the combing section 111 of this embodiment, the combing chamber is divided into upper and lower layers by a partition 111c. The upper layer forms a cleaning chamber, and the lower layer forms a roller brush chamber. The electric fan assembly 15 and the dust cup 16 are both disposed in the upper layer of the combing chamber, and the roller brush 121 is disposed in the lower layer of the combing chamber. The dust cup 16 includes a cup body 161, a cup inlet 162, a filter 163, a cup cover 164, and a switch cover assembly 165. A portion of the partition 111c located above the roller brush 121 and the housing 11 surround the cup body 161. The cup inlet 162 is opened on this partition 111c, connecting the dust cup 16 and the combing chamber. A filter 163 is detachably installed inside the cup body 161, and its surface has a filtering structure (e.g., a mesh structure). The filter 163 is located near the air inlet 151a of the electric fan and is used to intercept dirt in the suction airflow, allowing the cleaned airflow to flow towards the air inlet 151a of the electric fan. A receiving cavity is formed between the filter 163 and the inner wall of the cup body 161 to accommodate the intercepted dirt. A cup lid 164 is rotatably installed on the cleaning port above the cup body 161 and includes a lid body 164a and two rocker arms 164b. The lid body 164a gradually slopes downward from back to front, and its cross-section parallel to the rotation direction of the cup lid 164 is trapezoidal. The two rocker arms 164b are located on both sides of the lid body 164a and extend rearward to the housing 11 containing the electric fan 151. The opening and closing lid assembly 165 includes two rotating shafts 165a, an iron sheet, and a magnetic sheet. Two rotating shafts 165a are located on the left and right sides of the housing 11 behind the cup body 161, corresponding to the positions of the two rocker arms 164b, allowing the rocker arms 164b to rotate back and forth between the closed and open positions relative to the housing 11. In this embodiment, the connecting wire of the two rotating shafts 165a passes through the electric fan 151. An iron sheet is installed in the front wall of the cup lid 164, and a magnetic sheet is correspondingly installed in the front wall of the cup body 161; alternatively, the installation positions of the iron sheet and the magnetic sheet can be interchanged. The lid is closed by the magnetic attraction between the iron sheet and the magnetic sheet, and the magnetic attraction can be manually overcome when opening the lid. Of course, the lid opening and closing assembly 165 can also have other structural methods, such as a mechanical button for opening and manual closing. Figure 10 As shown, during cleaning, the user tilts the portable cleaning device 100 downwards so that the dust cup 16 faces downwards, then opens the cup lid 164 and rotates the lid 164 backwards around the pivot 165a to empty the dirt from the receiving cavity. Alternatively, the user can first open the cup lid 164, rotate the lid 164 backwards around the pivot 165a, and then turn the dust cup 16 cleaning port downwards.

[0035] The battery pack 17 is used to power the drive motor assembly 13 and the electric fan 151 assembly 15, and contains two rechargeable battery cells 171.

[0036] The power switch 18 is electrically connected to the battery pack 17, and the button of the power switch 18 is mounted on the handle 112. In this embodiment, the drive motor 131 is located below the button.

[0037] The charging port 19 is installed at the rear of the handle 112 and is electrically connected to the battery pack 17 for charging the battery pack 17.

[0038] like Figures 5-8 As shown, in this embodiment, both the electric fan 151 and the dust cup 16 are located directly above the roller brush 121. Furthermore, the extension line 131b' of the first rotating shaft 131b passes through the electric fan 151, the dust cup 16, the handle 112, and the battery cell 171, but does not pass through the roller brush 121. The extension line 151e' of the second rotating shaft 151e passes through the drive motor 131, the dust cup 16, the handle 112, and the battery cell 171. Moreover, the extension line 151e' of the rotating shaft of the electric fan 151 passes through the handle 112 along its length direction, not its width direction. The transmission assembly 14 is located between the electric fan 151 and the first motor body 131a. The rotation axes of the first rotating shaft 131b, the second rotating shaft 151e, and the roller brush 121 are all parallel to each other, that is, the shaft extension lines 131b' and 151e' are parallel to the roller brush axis 121d. The airflow path R includes an intake airflow path and an exhaust airflow path. The intake airflow path is: roller brush 121 → dust cup 16 → electric fan inlet 151a; the exhaust airflow path is: electric fan outlet 151b → exhaust window 111a. The intake airflow path is located upstream of the fan blade 151c, and the exhaust airflow path is located downstream of the fan blade 151c. The shortest distance from the outer surface of the exhaust window 111a to the electric fan outlet 151b does not exceed 1 cm. In the portable cleaning device 100, when the roller brush 121 is projected upwards along a direction perpendicular to the cleaning opening 111b, the projections of the electric fan 151 and the roller brush 121 overlap, while the projections of the first motor body 131a and the roller brush 121 do not overlap.

[0039] like Figure 6 As shown, in this embodiment, let L1 be the straight-line distance between the center of gravity of the fan blade 151c and the center of gravity of the roller brush 121, and L2 be the straight-line distance between the center of gravity of the first motor body 131a and the center of gravity of the roller brush 121, where L2 > L1. Alternatively, when point X is the center of gravity, the following positional relationship is satisfied: Let L1 be the shortest straight-line distance between point X1 of the fan blade and point X3 of the roller brush 121, and L2 be the shortest straight-line distance between point X2 of the first motor body 131a and point X3 of the roller brush 121, then L2 > L1. This minimizes the intake air path and the overall air path R. Furthermore, the aforementioned positional relationship is also satisfied when point X is the geometric center. In this embodiment, L2 > 2 × L1.

[0040] Furthermore, in this embodiment, when point X' is a point on the centroid, geometric center, or outer surface, the following condition is satisfied: Let the shortest straight-line distance between point X'1 of the electric fan 151 and point X'3 of the roller brush 121 be X'13, and the shortest straight-line distance between point X'2 of the drive motor 131 and point X'3 of the roller brush 121 be X'23, then X'23 > X'13. For example... Figure 8 As shown, X' represents the positional relationship of points on the outer surface. X'23 is at least 8 times greater than X'13. In this embodiment, X'23 is not less than 10 times X'13.

[0041] like Figures 1-10 As shown, based on the above structure, taking the removal of pet hair from a user's clothing as an example, the specific working process of the portable cleaning device 100 provided in this embodiment is as follows: 1) Power on The user holds the handle 112 with one hand H1, lifts the portable cleaning device 100, and presses the power switch 18 with the thumb of the hand H1 holding the handle 112. The electric fan 151 assembly 15 and the drive motor assembly 13 are powered on and turned on. The suction airflow is formed in the air path R, and the roller brush 121 also starts to rotate at high speed.

[0042] 2) Hair removal The user's hand H1 moves the portable cleaning device 100 so that the cleaning opening 111b is close to the area of ​​clothing with pet hair, while the other hand H2 is free or gently pulls the far end of the clothing outward to flatten and fix the surface of the clothing. The cleaning surface 121c (brush bristles / strips, etc.) of the roller brush 121 extends from the cleaning opening 111b and contacts the pet hair. The pet hair is first grabbed by the cleaning surface 121c, then rolled into the cleaning opening 111b by the cleaning surface 121c, then detached from the cleaning surface 121c by the airflow, and then enters the cup body 161 through the cup inlet 162 along the air path R with the suction airflow, and is intercepted and retained in the dust cup 16 by the filter 163. The suction airflow then enters the fan inlet 151a through the filter 163, and then flows from the fan outlet 151b to the exhaust window 111a, and is then discharged into the external environment.

[0043] 3) Power off The user presses the power switch 18 again with the thumb of H1, the electric fan 151 assembly 15 and the drive motor assembly 13 are powered off and shut down, the suction airflow disappears, and the roller brush 121 also stops rotating at high speed.

[0044] 4) Clearance Sale The user tilts the portable cleaning device 100 downwards so that the dust cup 16 faces downwards, and then rotates the lid 164 around the pivot to expose the receiving cavity and filter 163, allowing pet hair and other waste to be emptied into the trash can. The user then rotates the lid 164 upwards to the closed position to close the dust cup 16.

[0045] 6) Charging When charging is needed, simply insert one end of the charging cable into an external power source and the other end into charging port 19.

[0046] The above embodiments are merely illustrative examples of the technical solution of this utility model. The portable cleaning device involved in this utility model is not limited to the content described in the above embodiments, but is subject to the scope defined by the claims. Any modifications, additions, or equivalent substitutions made by those skilled in the art based on these embodiments are within the scope of protection claimed by the claims of this utility model.

[0047] In addition, in the portable cleaning device of this utility model, when clothing or other surfaces to be cleaned fill the cleaning opening, in order to prevent the air inlet of the electric fan from being completely blocked, an air leakage hole can be opened on the casing. The air leakage hole is higher than the cleaning opening and its total area is smaller than the cleaning opening. In this case, in addition to the suction airflow flowing in from the cleaning opening, there is also anti-blocking airflow flowing in from the air leakage hole.

Claims

1. A portable cleaning device, characterized in that, include: The casing has an internal combing chamber and an exhaust window on the surface. A roller brush is disposed in the combing chamber, and the cleaning surface can contact the surface to be cleaned through the cleaning opening of the combing chamber; A drive motor for driving the roller brush to rotate includes: a first motor body and a first rotating shaft; An electric fan, comprising fan blades, for forming a suction airflow that flows in from the cleaning opening and out from the exhaust window; A dust cup is installed in the airflow path of the suction airflow, located upstream of the electric fan, and is used to filter and collect dirt in the airflow; A battery pack for supplying power to the drive motor and the electric fan; Wherein, let L1 be the straight-line distance between the center of gravity of the fan blade and the center of gravity of the roller brush, and L2 be the straight-line distance between the center of gravity of the first motor body and the center of gravity of the roller brush, then L2 > L1.

2. The portable cleaning device according to claim 1, Its features are: The housing includes: a combing section and a handle connected to the combing section for holding the portable cleaning device with one hand; the combing section has a combing cavity inside; At least a portion of the drive motor is located within the handle.

3. The portable cleaning device according to claim 2, characterized in that: in, The drive motor transmits kinetic energy to the roller brush through a transmission assembly, and the structure in the transmission assembly that extends from the first rotating shaft to the roller brush is referred to as the transmission component. Let the plane containing the cross-section of the transmission component be the interface. This interface divides the portable cleaning device into two sides, denoted as side A and side B. The electric fan and the roller brush are located on side A, while the first motor body, the handle, and the battery pack are located on side B.

4. The portable cleaning device according to claim 1, characterized in that: in, When point X is the center of gravity, geometric center, or a point on the outer surface, the following conditions must be met: Let the shortest straight-line distance between point X1 of the fan blade and point X3 of the roller brush be X13, and the shortest straight-line distance between point X2 of the first motor body and point X3 of the roller brush be X23, then X23 > X13.

5. The portable cleaning device according to claim 1, characterized in that: in, When point X' is the center of gravity, geometric center, or a point on the outer surface, the following conditions must be met: Let the shortest straight-line distance between point X'1 of the electric fan and point X'3 of the roller brush be X'13, and the shortest straight-line distance between point X'2 of the drive motor and point X'3 of the roller brush be X'23, then X'23 > X'13.

6. The portable cleaning device according to claim 2, characterized in that: in, At least two-thirds of the first motor body is located inside the handle.

7. The portable cleaning device according to claim 1, characterized in that, Also includes: The housing includes: a combing section and a handle connected to the combing section for single-handed operation of the portable cleaning device; the combing section contains the combing cavity; The extension line of the first rotating shaft passes through the electric fan, the dust cup, the handle, and the battery cells of the battery pack; or, the extension line of the electric fan rotating shaft passes through the drive motor, the dust cup, the handle, and the battery cells of the battery pack.

8. The portable cleaning device according to claim 1, characterized in that: in, The electric fan is located between the dust cup and the drive motor, and both the electric fan and the dust cup are located above the roller brush.

9. The portable cleaning device according to claim 3, characterized in that: in, The transmission component is located between the electric fan and the first motor body, and the electric fan is located above the roller brush; the electric fan includes: the fan blade, the second body, and the second rotating shaft connecting the second body and the fan blade; The first rotating shaft and the second rotating shaft are parallel to each other.

10. The portable cleaning device according to claim 1, characterized in that: in, In the portable cleaning device, the roller brush is projected upward along a direction perpendicular to the cleaning opening, and the projection of the electric fan overlaps with that of the roller brush, while the projection of the first motor body does not overlap with that of the roller brush.

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