A hand-held automatic cleaning device

Abstract

The utility model discloses a handheld automatic cleaning device, including garbage shovel and cleaning subassembly, and garbage shovel includes the shovel body and sets up the draw bar of shovel body, and cleaning subassembly includes battery pack and cleaning spare, and cleaning spare includes the brush and motor, and the front end rotatable connection brush of shovel body, and motor and brush transmission connection, and motor is connected to battery pack through electric wire and switch electricity, still includes pull -out assembly, and pull -out assembly includes pull -out rope, and cleaning spare is hinged in the rear end of shovel body and can rotate around the hinging point in vertical plane, and pull -out rope both ends are connected to draw bar and cleaning subassembly respectively, and pull -out rope can pull cleaning spare rotation to lift the brush under the action of external force. The rear end of the brush and so on cleaning spare is hinged in the shovel body and can rotate around the hinging point in vertical plane, make its ground clearance adjustable, and through pull -out rope can pull cleaning spare rotation to lift the brush under the action of external force, and then adaptively clean big or small garbage.

Description

Technical Field

[0001] This utility model relates to the field of sweeping machine technology, and in particular to a handheld automatic sweeping device. Background Technology

[0002] In traditional cleaning methods, sanitation workers and students typically rely on brooms and dustpans to complete their tasks. However, this method is ineffective at cleaning small pieces of trash and fallen leaves, and it consumes a significant amount of time and energy. Especially in densely populated areas such as scenic spots and school cleaning zones, the timeliness and efficiency of trash collection directly impact environmental hygiene and the living experience of tourists, teachers, and students. Therefore, a cleaning device that can efficiently and conveniently collect various types of trash is needed.

[0003] For example, the Chinese utility model patent "A handheld small sweeper, announcement number CN212816131U" includes a dustpan base, a motor and a power supply. The dustpan base has openings at both the front and rear ends, with the front end being a garbage inlet and the rear end being a garbage outlet. A rechargeable lithium battery drives the motor to rotate, and a switch is provided at the handle to control the start and stop of the motor. The brush, dustpan base and garbage bag work together to complete the entire garbage cleaning process.

[0004] As mentioned above, the sweeper uses a motor to drive a brush to sweep in the garbage. The motor and brush are fixedly arranged at the front entrance, so the gap below them cannot be adjusted, making it inconvenient to sweep in garbage of different sizes. Utility Model Content

[0005] The purpose of this invention is to address the above-mentioned problems by providing a handheld automatic cleaning device that can adjust the ground clearance to adapt to sweeping up garbage of various sizes.

[0006] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0007] A handheld automatic cleaning device includes a dustpan and a cleaning assembly. The dustpan includes a dustpan body and a pull rod disposed on the dustpan body. The cleaning assembly includes a battery pack and a cleaning component. The cleaning component includes a brush and a motor. The front end of the dustpan body is rotatably connected to the brush. The motor is drivenly connected to the brush. The motor is electrically connected to the battery pack through wires and a switch. The device also includes a lifting assembly, which includes a lifting rope. The cleaning component is hinged to the rear end of the dustpan body and can rotate in a vertical plane around the hinge point. The two ends of the lifting rope are respectively connected to the pull rod and the cleaning assembly. Under the action of external force, the lifting rope can pull the cleaning component to rotate and lift the brush.

[0008] The battery pack is located at the rear of the shovel body, and the motor is a reversible DC motor with a forward and reverse switch. The battery pack uses a 12V lithium battery or a rechargeable battery, connected via a rocker switch to establish the motor power circuit. The battery pack can be directly strapped to the rear side wall of the shovel body, or it can be installed using a dedicated protective housing. Specifically, the sweeping assembly also includes a battery box, which consists of a box body and a cover. The box body has an open-end structure and is located at the rear end of the shovel body. The cover closes to the top opening of the box body, and the battery pack is arranged inside the box, thus achieving battery pack assembly.

[0009] The cleaning components, including the motor, can be directly mounted on the front two side walls of the shovel body. Alternatively, a dedicated support structure can be used to improve connection stability. Specifically, the cleaning component also includes clamping plates. Clamping plates are respectively provided on the front two side walls of the shovel body. The rear end of the clamping plates is hinged to the shovel body, and the front end of the clamping plates is provided with rotating holes. The brush can be rotatably mounted at the rotating holes. The rotating hole of one clamping plate is used to mount the I end of the rotating shaft of the brush through a bearing. The front end of the other clamping plate is used to mount the motor, and the motor drive shaft passes through the rotating hole and is connected to the II end of the rotating shaft of the brush through a coupling. This is how the cleaning components are assembled.

[0010] As mentioned above, the cleaning components such as brushes are hinged to the rear end of the shovel body and can rotate around the hinge point in the vertical plane, making its ground clearance adjustable. Furthermore, the cleaning components can be pulled to rotate under external force by the lifting rope to lift the brushes, thereby adapting to cleaning large or small pieces of garbage.

[0011] Based on the aforementioned solution, in an improved version, to address the technical problem of some garbage being blown out from the front end of the shovel body as the brush rolls, the garbage shovel of the sweeping device also includes a partition net. The front end of the shovel body is provided with an angled opening, the brush is arranged at the front end of the angled opening, and the partition net is arranged at the rear end of the angled opening, covering the area between the brush and the rear edge of the angled opening. In this way, a ventilation area is formed at the rear end of the angled opening, and the partition net (e.g., a 10-mesh stainless steel mesh) is arranged in the ventilation area to isolate the garbage, thus achieving both ventilation and garbage screening.

[0012] Based on the aforementioned solution, in an improved version, to address the technical problem of dust or sand splashing due to excessive motor-driven brush rotation speed, the cleaning component of the sweeping device also includes a speed regulator connected to the power circuit of a reversible DC motor. Thus, the brush rotation speed can be adjusted via the speed regulator, allowing for adjustments based on factors such as the weight of the waste.

[0013] Based on the aforementioned solution, in an improved version, to address the technical problem of unstable fixation caused by different battery pack models having varying heights, the cleaning component of the cleaning device further includes a clamping bolt and a clamping post. A strip-shaped hole is provided on the rear side wall of the housing, extending vertically. The clamping post is positioned inside the housing, pressing against the top end face of the battery pack. The clamping post has an axially extending threaded hole, through which the clamping bolt passes, and its bolt is connected to the threaded hole of the clamping post. Thus, by adjusting the position of the clamping post to match the height of the battery pack, the clamping bolt and clamping post are tightly pressed against the strip-shaped hole in the housing, thereby fixing the battery pack to the bottom of the housing.

[0014] Based on the aforementioned solution, in an improved version, to address the technical problem of unstable connection caused by the gap between the pull rod and the shovel body, the bottom end of the pull rod of the cleaning device is located on the rear end face of the shovel body. The pull rod is positioned between the box body and the shovel body, and two pads are placed between the box body and the shovel body, with the two pads located on opposite sides of the pull rod. In this way, the width of the two pads matches that of the pull rod, forming a planar limiting surface and improving connection stability.

[0015] By adopting the above technical solution, this utility model has the following beneficial effects:

[0016] This utility model discloses a handheld automatic sweeping device. A sweeping component, such as a brush, is hinged to the rear end of a shovel body, allowing it to rotate vertically around the hinge point. This adjusts the brush's clearance from the ground. A lifting rope, under external force, can pull the sweeping component to rotate and lift the brush, thus adapting to sweeping both large and small pieces of debris. When sweeping small debris, the brush is positioned close to the ground; when sweeping large debris, the brush is lifted to increase the clearance, allowing the larger debris to be swept in. During sweeping, turning on the switch starts the motor to rotate forward, driving the brush to sweep the debris into the shovel body through the gap between the brush and the bottom wall of the front end. When emptying the shovel, tilting the shovel body allows the debris to collect close to the brush; turning on the switch starts the motor to rotate in reverse, driving the brush to sweep the debris out of the shovel body through the gap between the brush and the bottom wall of the front end. A forward / reverse switch and a DC motor control the brush to sweep debris in forward or out in reverse, facilitating efficient and convenient debris removal. Attached Figure Description

[0017] Figure 1 This is a side view of Example 1 of the automatic cleaning device of this utility model. Figure 2 yes Figure 1 Rear view. Figure 3 yes Figure 2 A partial internal view. Figure 4 yes Figure 1 A partial top view. Figure 5 yes Figure 1 A schematic diagram of the battery box structure. Figure 6 yes Figure 5Another perspective structural diagram. Figure 7 yes Figure 1 The connection diagram of the DC motor and speed controller.

[0018] Figure 8 This is a schematic diagram of the connection structure between the shovel body and the clamping plate in Example 2 of the automatic cleaning device of this utility model.

[0019] Figure 9 This is a partial top view of Example 3 of the automatic cleaning device of this utility model. Figure 10 yes Figure 9 Side view.

[0020] Figure 11 This is a schematic diagram of the battery box structure of Example 3 of the automatic cleaning device of this utility model.

[0021] In the attached diagram, 1 is the forward / reverse switch, 2 is the pull rod, 3 is the battery box, 4 is the shovel body, 5 is the clamping plate, 6 is the DC motor, 7 is the brush, 8 is the bearing, 9 is the partition net, and 10 is the battery pack. Detailed Implementation

[0022] Example 1

[0023] See Figures 1-6 This embodiment 1 provides a handheld automatic cleaning device, including a garbage shovel and a cleaning assembly. The garbage shovel includes a shovel body 4 and a pull rod 2 disposed on the shovel body 4. The cleaning assembly includes a battery pack 10 and a cleaning component. The cleaning component includes a brush 7 and a motor. The front end of the shovel body 4 is rotatably connected to the brush 7. The motor is connected to the brush 7 via a transmission connection. The motor is electrically connected to the battery pack 10 via wires and a switch. The battery pack 10 is disposed at the rear end of the shovel body 4. The motor is a reversible DC motor 6, and the switch is a reversible switch 1.

[0024] The battery pack uses a 12V lithium battery or a storage battery, connected via a rocker switch to establish the motor power circuit. The DC motor, battery pack, and their connection control are existing technologies and will not be described in detail here. This application applies the reversible DC motor to a garbage shovel and improves the mounting structure of the sweeping assembly for better compatibility.

[0025] The battery pack can be directly strapped to the rear side wall of the shovel body, or it can be installed using a special protective shell. Taking the special protective shell as an example, the cleaning assembly also includes a battery box 3, which consists of a box body and a cover. The box body has a box structure with one open end, and is welded, bonded, or bolted to the rear end of the shovel body. The cover closes to the top opening of the box body, and the battery pack is arranged inside the box. As shown in the figure, the box body has mounting holes 321 for bolted connections using mounting bolts and nut kits 32. The mounting holes can be made of hard plastic. The bottom of the cover protrudes softly and is pressed into the box body for fixation, thus assembling the battery pack.

[0026] The cleaning components, including the DC motor, can be directly mounted on the front side walls of the shovel body. Alternatively, a dedicated support structure can be used to improve connection stability. Taking the dedicated support structure as an example, the cleaning component also includes a clamping plate 5. The front end of the clamping plate 5 has a rotating hole. The front side walls of the shovel body 4 are each provided with a clamping plate 5. The rotating hole of one clamping plate is fitted with the I end of the rotating shaft 71 of the brush 7 via a bearing 8. The front end of the other clamping plate is fitted with a reversible DC motor 6, which is fixed using screws and bolts. The drive shaft of the DC motor passes through the rotating hole and is connected to the II end of the rotating shaft 71 of the brush via a coupling 21. This completes the assembly of the cleaning components.

[0027] As described above, when sweeping garbage, turning on the forward / reverse switch activates the DC motor to rotate forward, driving the brush to sweep garbage into the shovel body through the gap between the brush and the bottom wall of the front end. When emptying garbage, tilting the shovel body allows the garbage to gather close to the brush; turning on the forward / reverse switch activates the DC motor to rotate backward, driving the brush to sweep the garbage out of the shovel body through the gap between the brush and the bottom wall of the front end. By controlling the brush with the forward / reverse switch and the DC motor, garbage can be swept in forward or out in reverse, making garbage cleaning more efficient and convenient.

[0028] Example 2

[0029] Based on the aforementioned Embodiment 1, Embodiment 2 has an isolation structure, as detailed below.

[0030] See Figures 1-6 In this embodiment 2, a handheld automatic sweeping device addresses the technical problem of some garbage being blown out from the front of the shovel body by the rolling brush. The shovel body 4 has a slanted opening at its front end, with the brush 7 positioned at the front of the slanted opening and the slanted net 9 positioned at the rear end, covering the area between the brush and the rear edge of the slanted opening. For example, the slanted net 9 is made of 10-mesh stainless steel mesh, which is pressed and welded or bonded to the slanted opening of the shovel body by a partition plate 91. This creates a ventilation area at the rear end of the slanted opening, and the slanted net is placed within this ventilation area to provide ventilation and screen for garbage.

[0031] Example 3

[0032] Based on the aforementioned Embodiment 1 or Embodiment 2, Embodiment 3 has a speed adjustment function, as detailed below.

[0033] See Figures 1-7In this embodiment 3, a handheld automatic sweeping device addresses the problem of dust or sand splashing due to excessive motor-driven brush rotation speed. The sweeping component of this device also includes a speed controller connected to the power circuit of a reversible DC motor. The motor, speed controller, battery, and their connection control are all existing technologies and will not be described in detail here. For example, the speed controller uses an AQMD2410NS driver, etc. Thus, the brush rotation speed can be adjusted via the speed controller, allowing for adjustments based on factors such as the weight of the debris.

[0034] Example 4

[0035] Based on the aforementioned Embodiment 1, Embodiment 2, or Embodiment 3, this Embodiment 4 has a pad block coordination structure, as detailed below.

[0036] See Figures 1-6 In this embodiment 4, a handheld automatic cleaning device addresses the technical problem of unstable connection caused by a gap between the pull rod and the shovel body. The bottom end of the pull rod is positioned on the rear end face of the shovel body, with the pull rod located between the box and the shovel body. Two spacers are placed between the box and the shovel body, with each spacer positioned on one side of the pull rod. As shown in the figure, the box body has a limiting hole 311, and the spacers utilize a limiting screw and nut assembly 31. One end of the screw is welded to the shovel body, and the other end is equipped with a limiting nut for positioning and a locking nut for tightening. This allows for adjustment based on the gap width. Thus, the widths of the two spacers and the pull rod are matched, forming a planar limiting surface, improving connection stability.

[0037] Example 5

[0038] Based on the aforementioned Embodiment 1, Embodiment 2, Embodiment 3, or Embodiment 4, this Embodiment 5 has a gap adjustment structure between the brush and the bottom wall of the front end of the shovel body, as detailed below.

[0039] See Figure 8 In this embodiment 5, a handheld automatic cleaning device addresses the technical problem of adjusting the gap between the brush and the bottom wall of the front end of the shovel. Both clamping plates 5 employ the following connection structure: the rear end of each clamping plate 5 is hinged to the shovel via a pin 51, and an arc-shaped hole 53 centered on the pin is formed on the front end of the shovel. The front end of each clamping plate 5 is tightened and fixed to the arc-shaped hole using a wing screw kit (wing screws and matching nuts). When adjustment is needed, loosening the wing screws on both clamping plates and then turning the front end of the clamping plate upwards increases the gap, while turning it downwards decreases the gap. Tightening the wing screws then secures the device. A smaller gap can be used when sweeping in smaller debris, and a larger gap can be used when sweeping in larger debris. Furthermore, a smaller gap prevents debris from falling out during movement, while a larger gap improves emptying efficiency.

[0040] Example 6

[0041] See Figures 9-10 This embodiment 6 provides a handheld automatic cleaning device. To address the technical issue of adjusting the gap between the brush and the front bottom wall of the shovel body, it employs a different adjustment structure than the aforementioned embodiment 5. The cleaning device further includes a lifting assembly 57, which comprises a lifting rope. The cleaning component is hinged to the rear end of the shovel body and can rotate vertically around the hinge point. The two ends of the lifting rope are respectively connected to a pull rod (specifically connected to the top of the pull rod for manual pulling) and the cleaning component (specifically connected to a motor or brush shaft mounting base). Under external force, the lifting rope can pull the cleaning component to rotate and lift the brush. Taking the U-shaped frame 56 connected to the lifting rope as an example, the open end of the U-shaped frame is welded or bolted to a clamping plate, and the closed end of the U-shaped frame is located above the front end of the shovel body. A mesh can also be installed on the closed end of the U-shaped frame, and the lifting rope is connected to the lifting hole at the closed end of the U-shaped frame.

[0042] As described above, the cleaning components, such as the brush, are hinged to the rear end of the shovel body and can rotate vertically around this hinge point, allowing for adjustable ground clearance. Furthermore, a lifting rope can be used to pull the cleaning components to rotate and lift the brush, thus adapting to cleaning both large and small pieces of trash. When cleaning smaller trash, such as a 2cm wide and 2cm high mineral water bottle cap, the brush is positioned close to the ground. When cleaning larger trash, such as a 5cm wide and 15cm long mineral water bottle, the brush is lifted to increase its ground clearance, allowing for the sweeping of larger trash. Simultaneously, when sweeping in trash, the lifting rope is released, and the brush, under its own weight, is positioned at the lower end with a lower ground clearance. When emptying the trash, the lifting rope is pulled up to lift the brush, increasing the gap between the brush and the bottom wall of the front end of the shovel body (equivalent to being off the ground), facilitating the emptying of the trash.

[0043] Based on the above examples, in a preferred embodiment, to facilitate manual pulling, the lifting assembly also includes a lifting handle. The lifting handle is mounted on the top of the pull rod, with its traction end extending downwards. The upper end of the lifting rope is connected to the traction end of the lifting handle. The lifting handle can be a spring-loaded structure or a limiting and fixing structure, and can be an existing component. Specific examples include a spring-loaded bicycle handbrake (see figure) and a fixing throttle cable controller, which will not be described in detail here. Thus, the lifting rope can be pulled relatively easily using the lifting handle.

[0044] Based on the above examples, in a preferred embodiment, when a person holds the lever and pulls up the handle end, to address the issue of difficulty in pulling the front-positioned cleaning component when the handle is positioned downwards, the lifting assembly also includes a traction seat. The rear end of the traction seat protrudes rearward relative to the handle, and a traction hole is provided at the rear end of the traction seat, which is vertically continuous, through which the lifting rope passes. Both the traction seat and the handle are connected and fixed to the lever using pipe clamps and bolts. Thus, by positioning the lifting rope rearward relative to the handle via the traction seat, it is easier to lift the handle end, pull the traction end forward, and thereby pull the lifting rope to lift the brush.

[0045] Based on the above examples, in a preferred embodiment, in order to adjust the U-shaped frame 56 and its upper partition net to adapt to different shovel openings, a partition strip hole 54 is opened on the clamping plate, and with the partition bolt and nut kit 55, front and rear adjustment can be achieved.

[0046] Based on the above examples, in a preferred embodiment, in order to adjust the ground clearance by adjusting the position of the brush on the shovel mouth, a strip-shaped rotating hole is opened on the front end of the clamping plate. That is, the rotating hole is designed as a strip-shaped hole structure that extends back and forth, so that it can be adjusted back and forth. When it rotates around the hinge position (pin 51), it can cooperate to adjust its ground clearance.

[0047] Example 7

[0048] Based on the aforementioned Embodiment 1, Embodiment 2, Embodiment 3, Embodiment 4, Embodiment 5, and Embodiment 6, this Embodiment 7 has an adjustable compressed battery pack structure, as detailed below.

[0049] See Figure 9 In this embodiment 7, a handheld automatic cleaning device addresses the technical problem of unstable fixation caused by different battery pack models having varying heights. The cleaning assembly of this device further includes a clamping bolt 341 and a clamping post 34. A strip-shaped hole 342 is provided on the rear side wall of the housing, extending vertically. The clamping post is positioned inside the housing, pressing against the top end face of the battery pack. The clamping post has an axially extending threaded hole, through which the clamping bolt passes, and its bolt is connected to the threaded hole of the clamping post. Thus, by adjusting the position of the clamping post to match the height of the battery pack, the clamping bolt and clamping post are tightly pressed against the strip-shaped hole in the housing, securing the battery pack to the bottom of the housing. A spacer 33 can also be placed inside the housing to isolate space, facilitating assembly and heat dissipation.

[0050] As mentioned above, the main materials of this handheld automatic sweeping device include a 12V DC motor, a 12V battery, a stainless steel dustpan, a switch, a speed controller, and brushes. After assembly, it was found that the motor drives the brush to rotate and blow air into the dustpan body. However, since the rear end of the dustpan body is generally not open, the airflow is blown outwards, and thus garbage is also blown out. Therefore, a screen was installed on the slanted opening of the dustpan body to prevent garbage from being blown out. Further testing revealed that the brush could not rotate when the motor touched the ground at a lower speed. Replacing it with a higher-power motor and a larger-capacity battery might cause excessive rotation speed. Therefore, a speed controller was installed to better adjust the speed; a faster speed can be adjusted to a slower speed. As mentioned above, a motor is installed on a stainless steel dustpan, which drives the brush to rotate and sweep garbage. The battery pack is then installed at the rear end of the dustpan. There's a switch on the lever; this is the motor switch. Pressing it to the left (one side) starts the motor and rotates forward to begin sweeping; pressing it to the right (the other side) reverses the motor, causing the brush to rotate in the opposite direction to empty the debris collected around the brush. There's a small switch on the battery; this is the battery power switch. When the power switch is on, the indicator light will be on; when the power switch is off, the light will not be on. The dustpan has a stiff mesh to prevent debris from escaping through the slanted opening during sweeping.

[0051] It should be noted that the examples of the above embodiments can preferably be combined with one or more of each other according to actual needs, and the accompanying drawings of multiple examples adopt a set of combined technical features, which will not be described in detail here.

[0052] It should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation.

[0053] The above description is a detailed explanation and illustration of the preferred embodiments of the present utility model. However, these descriptions are not intended to limit the scope of protection claimed by the present utility model. All equivalent changes or modifications made under the technical teachings of the present utility model shall fall within the patent protection scope covered by the present utility model.

Claims

1. A handheld automatic sweeping device, comprising a dustpan and a sweeping assembly, wherein the dustpan includes a dustpan body and a pull rod disposed on the dustpan body, the sweeping assembly includes a battery pack and a sweeping component, the sweeping component includes a brush and a motor, the front end of the dustpan body is rotatably connected to the brush, the motor is drivenly connected to the brush, and the motor is electrically connected to the battery pack via wires and a switch, characterized in that: It also includes a lifting assembly, which includes a lifting rope. The sweeping component is hinged to the rear end of the shovel body and can rotate in a vertical plane around the hinge point. The two ends of the lifting rope are respectively connected to the pull rod and the sweeping assembly, and the lifting rope can pull the sweeping assembly to rotate under the action of external force to lift the brush.

2. The handheld automatic cleaning device according to claim 1, characterized in that: The lifting assembly also includes a lifting handle, which is installed at the top of the pull rod. The traction end of the lifting handle extends downward, and the upper end of the lifting rope is connected to the traction end of the lifting handle.

3. The handheld automatic cleaning device according to claim 2, characterized in that: The lifting assembly also includes a traction seat, the rear end of which protrudes rearward relative to the lifting handle, and the rear end of the traction seat is provided with a traction hole, through which the lifting rope passes.

4. The handheld automatic cleaning device according to claim 1, characterized in that: The front end of the shovel body has an arc-shaped hole, and the cleaning component can be tightened and fixed to the arc-shaped hole by a wing screw kit.

5. A handheld automatic cleaning device according to claim 1, characterized in that: The cleaning component also includes clamping plates. The front side walls of the shovel body are respectively provided with clamping plates. The rear end of the clamping plate is hinged to the shovel body. The front end of the clamping plate is provided with a rotating hole. The brush is rotatably installed at the rotating hole. The rotating hole of one clamping plate is used to install the I end of the rotating shaft of the brush through a bearing. The front end of the other clamping plate is used to install a motor. The drive shaft of the motor passes through the rotating hole and is connected to the II end of the rotating shaft of the brush through a coupling.

6. The handheld automatic cleaning device according to claim 1, characterized in that: The garbage shovel also includes a partition net. The front end of the shovel body is provided with an slanted opening. The brush is arranged at the front end of the slanted opening, and the partition net is arranged at the rear end of the slanted opening, covering the area between the brush of the slanted opening and the rear edge of the slanted opening.

7. A handheld automatic cleaning device according to claim 1, characterized in that: The sweeping assembly also includes a speed controller connected to the power circuit of a reversible DC motor; wherein the battery pack is located at the rear end of the shovel body, the motor is a reversible DC motor, and the switch is a forward / reverse switch.

8. A handheld automatic cleaning device according to claim 1, characterized in that: The cleaning assembly also includes a battery box, which includes a box body and a cover. The box body has a box structure with one end open and is located at the rear end of the shovel body. The cover closes to the top opening of the box body, and a battery pack is arranged inside the box body.

9. A handheld automatic cleaning device according to claim 8, characterized in that: The cleaning assembly also includes a clamping bolt and a clamping post. The rear side wall of the housing is provided with a strip-shaped hole, which extends vertically. The clamping post is arranged inside the housing and presses against the top end face of the battery pack. The clamping post is provided with an axially extending threaded hole. The clamping bolt passes through the strip-shaped hole and is bolted to the threaded hole of the clamping post, so that the clamping bolt and the clamping post are tightly pressed against the strip-shaped hole of the housing.

10. A handheld automatic cleaning device according to claim 8, characterized in that: The bottom end of the pull rod is located on the rear end face of the shovel body. The pull rod is located between the box body and the shovel body. Two pads are provided between the box body and the shovel body, and the two pads are located on both sides of the pull rod.

Images