An electric sweeper

Abstract

The utility model discloses an electric cleaning machine, including host computer, cleaning unit is installed in the front end of host computer for cleaning garbage, dust collecting box is detachably installed on the host computer and is equipped with the dust collecting entrance of facing the cleaning unit, be equipped with the air outlet on the dust collecting box, be equipped with the baffle assembly at the air outlet, the baffle assembly forms the labyrinth air passage in the inner chamber of dust collecting box. Further, the inner chamber bottom of dust collecting box is the inclined plane of low in front and high in back, and one end of the inclined plane near dust collecting entrance is equipped with the baffle strip that protrudes upwards. The utility model can effectively avoid the phenomenon of dust raising, realize better dust collecting effect.

Description

Technical Field

[0001] This utility model relates to the field of sweeper technology, and in particular to an electric sweeper. Background Technology

[0002] A sweeper is an electric tool used for cleaning courtyards, paths, halls, storage areas, etc. It is much faster than traditional brooms, capable of cleaning everything from small dust particles and metal filings to larger stones, leaves, and glass. It is also easy to operate, providing great convenience to sanitation workers and other users, and has been widely adopted. The main structure of the sweeper is based on Chinese invention application CN108411831 A. During operation, the sweeping brush rotates to clean, and the swept debris is sent to a dust collection box at the rear. However, existing dust collection boxes typically have only one waste inlet. Due to the continuous sweeping of the brush, a circulating airflow is formed within the dust collection box, causing tiny debris (especially dust) that has already entered the box to be carried out again by the airflow and flow out through the gaps between the brush and the dust collection box, creating dust pollution. Utility Model Content

[0003] The purpose of this invention is to address the shortcomings of existing technologies by proposing an electric sweeper that effectively avoids dust generation and achieves better dust collection.

[0004] The technical solution to achieve the purpose of this utility model is:

[0005] An electric sweeper includes a main unit; a cleaning unit installed at the front end of the main unit for sweeping garbage; and a dust collection box detachably installed on the main unit and having a dust collection inlet facing the cleaning unit. The dust collection box has an air outlet, and a baffle assembly is provided at the air outlet, the baffle assembly forming a labyrinthine airflow channel in the inner cavity of the dust collection box.

[0006] Furthermore, the front end of the main unit is provided with a hollow cavity, and drive wheels are rotatably mounted on the main unit on both sides of the hollow cavity. The cleaning unit includes a drive motor disposed in the hollow cavity and a roller brush rotatably mounted below the hollow cavity. The output end of the drive motor is sequentially connected to the drive wheels and the roller brush.

[0007] Furthermore, the output end of the drive motor is connected to the drive wheel via a belt drive, a large gear is coaxially fixed on the drive wheel, and a small gear is coaxially fixed to the end of the roller brush, the small gear meshing with the large gear.

[0008] Furthermore, the drive motor has an extension shaft coaxially fixed to the motor shaft on the side away from the output end. An axial flow fan facing the drive motor is coaxially fixed on the extension shaft. A row of air holes is provided at the bottom of the hollow cavity along the length direction, and the axial flow fan is located directly above the air holes.

[0009] Furthermore, a cleaning plate fixed to the main unit is provided above the roller brush. Multiple cleaning plates are arranged along the length of the roller brush. Each cleaning plate extends radially along the roller brush, and its end extends at least to contact the bristles of the roller brush. Thus, during the cleaning process of the roller brush, foreign objects adhering to the surface of the roller brush are removed by scraping, so that the roller brush has a lasting cleaning power.

[0010] Furthermore, the rear bottom of the host is provided with a swivel wheel located between two drive wheels.

[0011] Furthermore, the bottom of the inner cavity of the dust collection box is a sloped surface, lower at the front and higher at the back, with an upward-protruding baffle at the end of the slope near the dust collection inlet. By setting the bottom of the inner cavity as a slope, it is easier to disassemble the dust collection box for dumping waste. At the same time, by setting the baffle, the height of the baffle is low, so that it will not affect the entry of waste into the dust collection box under the high airflow generated by the cleaning unit. When the dust collection box is installed on the main unit for dust collection, it can also prevent waste from flowing out of the dust collection inlet, thus achieving a better dust collection effect.

[0012] Furthermore, the outer end of the baffle is provided with a dust guide plate fixed to the bottom of the inner cavity of the dust collection box, and the dust guide plate is inclined downwards towards the cleaning unit. By setting the dust guide plate as a transition between the dust collection inlet and the cleaning unit, it is beneficial for fine dust to enter the dust collection box, thereby further improving the dust collection effect.

[0013] Furthermore, the dust collection box includes an upper cover and a lower body that are interlocked with each other. The bottom sides and rear end of the upper cover are provided with a first extension and a second extension that extend downward. A positioning groove that matches the bottom shape of the upper cover is formed between the first extension and the second extension. The top of the lower body is provided with a positioning plate that matches the positioning groove. The positioning plate is inserted into the positioning groove and is connected to the positioning groove by a locking part.

[0014] Furthermore, the locking part includes a buckle and a slot that engage with each other, the buckle being located on the outside of the positioning plate and the slot being located on the first extension.

[0015] Furthermore, the main unit has a through groove running through the top and bottom in the middle. The shape of the through groove is adapted to the shape of the dust collection box, and a first stepped surface is provided on the outer periphery. The outer periphery of the dust collection box is provided with a second stepped surface adapted to the first stepped surface. The first stepped surface supports the second stepped surface in the longitudinal direction.

[0016] Furthermore, the top of the dust collection box is provided with a downwardly recessed sloping groove, and a handle fixed to the dust collection box is provided in the sloping groove.

[0017] Furthermore, a first baffle and a second baffle are respectively provided on the sides of the air outlet near and away from the cleaning unit. The sides of the first and second baffles extend to both sides of the inner cavity of the dust collection box, and their bottoms extend to the lower part of the inner cavity of the dust collection box, forming the labyrinthine airflow channel. The second baffle and the rear end of the inner cavity of the dust collection box form a settling area, which is connected to the labyrinthine airflow channel. Due to the setting of the first baffle, a settling area is formed at the rear end of the inner cavity of the dust collection box, forcing most of the dust to settle here, further preventing dust from flowing to the air outlet.

[0018] Furthermore, the top of the dust collection box has multiple small holes, forming the air outlet.

[0019] By adopting the above technical solution, this utility model has the following beneficial effects:

[0020] (1) By setting an air outlet, this utility model avoids airflow circulation, which would cause dust to flow out of the dust collection inlet again. By setting a baffle assembly, a labyrinth-like airflow channel is formed, which partially blocks the airflow at the air outlet, thereby reducing the airflow speed towards the air outlet and preventing dust from being discharged from the air outlet and generating dust.

[0021] (2) The cleaning unit of this utility model uses a roller brush as the execution unit. The roller brush and the drive wheel are driven to rotate simultaneously by the drive motor. The position of the roller brush is set at the front of the main unit to reduce the cleaning dead angle. At the same time, the drive motor is set at the top of the roller brush, so that the overall structure is more reasonably balanced and the sweeper is easier to move.

[0022] (3) By adding an axial flow fan, this utility model can, on the one hand, discharge the heat generated by the drive motor through the air blowing hole, thereby improving the heat dissipation effect. On the other hand, by setting the air blowing hole at the bottom, it can play the role of preventing rain and dust. At the same time, it can also prevent dust and other foreign objects from entering the hollow cavity under the action of the roller brush when the drive motor is working.

[0023] (4) By setting up a positioning groove and a positioning plate, this utility model can not only achieve the positioning and installation of the upper box cover and the lower box body, but also form three staggered barriers consisting of the second extension, the positioning plate and the first extension at the connection of the rear end and both sides of the dust collection box, so as to achieve a better sealing effect and prevent dust from overflowing from the connection.

[0024] (5) The locking part of this utility model adopts a buckle and slot structure to achieve fastening and locking. The structure is simple and easy to assemble.

[0025] (6) This utility model achieves the longitudinal detachable installation of the dust collection box on the main unit through the mutually cooperating stepped surfaces, which is convenient for disassembly and assembly.

[0026] (7) By adding a handle structure to the dust collection box, this utility model makes it easy to lift the dust collection box upwards, so that the dust collection box can be quickly separated from the main unit.

[0027] (8) The bottom of the sweeper of this utility model adopts a three-wheel distribution structure. By setting universal wheels, the whole machine can turn more flexibly and is easy to turn in place. Attached Figure Description

[0028] To make the content of this utility model easier to understand, the present utility model will be further described in detail below with reference to specific embodiments and accompanying drawings, wherein:

[0029] Figure 1 This is a perspective view of the present utility model;

[0030] Figure 2 This is a schematic diagram of the structure of the dust collection box of this utility model;

[0031] Figure 3 This is a schematic diagram of the bottom structure of this utility model;

[0032] Figure 4 This is a partial cross-sectional view of the present invention;

[0033] Figure 5 for Figure 4 Enlarged view of section A in the image;

[0034] Figure 6 This is a schematic diagram of the cleaning unit structure of this utility model (belt drive is not shown in the figure).

[0035] The labels in the attached diagram are:

[0036] 1. Main unit housing, 1-1 first stepped surface, 2. Push rod assembly, 3. Hollow cavity, 3-1 air blowing hole, 4. Drive wheel, 4-1 large gear, 5. Drive motor, 6. Roller brush, 7. Small gear, 8. Universal wheel, 9. Axial flow fan, 10. Cleaning plate, 11. Upper box cover, 11. First extension, 11-1, 11-2 second extension, 11-3 slot, 11-4 small hole, 12. Lower box, 12. Positioning plate, 12-1, buckle, 12-2, handle, 13. First wind deflector, 14. Second wind deflector, 15. Baffle strip, 16. Dust guide plate. Detailed Implementation

[0037] To better understand the above technical solutions, the following will provide a detailed explanation of the technical solutions in conjunction with the accompanying drawings and specific implementation methods.

[0038] (Example 1)

[0039] like Figures 1 to 6 The electric sweeper shown includes a main unit, a cleaning unit, and a dust collection box. The cleaning unit is installed at the front of the main unit and is used to sweep up debris. The dust collection box is detachably installed on the main unit and has a dust collection inlet facing the cleaning unit to collect the debris swept up by the cleaning unit. This embodiment optimizes the structure of the dust collection box to effectively avoid dust generation and achieve better dust collection.

[0040] Specifically, the main unit includes a main unit housing 1, a push rod assembly 2 at the rear end of the main unit housing 1, and a hollow cavity 3 at the front end. Drive wheels 4 are symmetrically mounted on the left and right sides of the hollow cavity 3. The cleaning unit includes a drive motor 5 located within the hollow cavity 3 and a roller brush 6 rotatably mounted below the hollow cavity 3. The output end of the drive motor 5 is connected to either drive wheel 4 via a belt drive, thus enabling the drive motor 5 to drive the drive wheel 4 to rotate. A large gear 4-1 is coaxially fixed to the inner side of the drive wheel 4, and a small gear 7 is coaxially fixed to the end of the roller brush 6. The small gear 7 meshes with the large gear 4-1, thereby driving the roller brush 6 to rotate simultaneously with the rotation of the drive wheel 4, thus achieving the cleaning action. By using the roller brush 6 as the execution unit, the drive motor 5 simultaneously drives the roller brush 6 and the drive wheel 4 to rotate. Positioning the roller brush 6 at the front end of the main unit reduces cleaning dead angles. Furthermore, placing the drive motor 5 above the roller brush 6 makes the overall structure more balanced and facilitates the movement of the sweeper. The rear bottom of the main unit housing 1 is also equipped with a universal wheel 8 located between the two drive wheels 4, which makes the whole machine more flexible to turn and facilitates turning operations on the spot.

[0041] An extension shaft, coaxially fixed to the motor shaft, is provided on the side of the drive motor 5 away from the output end. An axial flow fan 9, facing the drive motor 5, is coaxially fixed on the extension shaft. A row of air holes 3-1 is provided along the length direction at the bottom of the hollow cavity 3, and the axial flow fan 9 is located directly above the air holes 3-1. On the one hand, the heat generated by the drive motor 5 during operation is discharged through the air holes 3-1, improving the heat dissipation effect. On the other hand, by placing the air holes 3-1 at the bottom, it serves to prevent rain and dust. At the same time, since the drive motor 5 is always blowing air outwards during operation, it also prevents dust and other foreign objects from entering the hollow cavity 3 under the action of the roller brush 6.

[0042] A cleaning plate 10 is fixed on the main housing 1 above the roller brush 6. Multiple cleaning plates 10 are arranged along the length of the roller brush 6. Each cleaning plate 10 extends radially along the roller brush 6 and its end extends at least to contact the bristles of the roller brush 6. Thus, during the cleaning process of the roller brush 6, foreign objects adhering to the surface of the roller brush are removed by scraping, so that the roller brush has a lasting cleaning power.

[0043] The dust collection box includes an upper cover 11 and a lower body 12 that are interlocked. The upper cover 11 has a first extension 11-1 and a second extension 11-2 extending downwards on both sides and the rear end. A positioning groove matching the bottom shape of the upper cover 11 is formed between the first extension 11-1 and the second extension 11-2. The lower body 12 has a positioning plate 12-1 at the top that matches the positioning groove. The positioning plate 12-1 is inserted into the positioning groove and is connected to it by a locking part. By setting the positioning groove and positioning plate 12-1, the upper cover 11 and the lower body 12 can be positioned and installed. Simultaneously, three staggered barriers—the second extension 11-2, the positioning plate 12-1, and the first extension 11-1—are formed at the connection points of the rear end and both sides of the dust collection box's inner cavity, achieving a better sealing effect and preventing dust from overflowing from the connection points. The locking part includes a snap-fit ​​buckle 12-2 and a slot 11-3 that are interlocked. The snap-fit ​​buckle 12-2 is located on the outside of the positioning plate 12-1, and the slot 11-3 is located on the first extension 11-1, so as to realize the snap-fit ​​locking. The structure is simple and easy to assemble.

[0044] The main housing 1 has a through groove running vertically through its center. The shape of the through groove matches the shape of the dust collection box, and a first stepped surface 1-1 is provided on its outer periphery. The outer periphery of the dust collection box has a second stepped surface that matches the first stepped surface 1-1. The first stepped surface 1-1 supports the second stepped surface longitudinally, allowing the dust collection box to be detachably installed on the main housing along the longitudinal direction for easy assembly and disassembly. The top of the dust collection box has a downwardly recessed sloping groove, within which a handle 13 is fixed to the dust collection box, facilitating the upward lifting of the dust collection box and allowing it to be quickly separated from the main housing 1.

[0045] The top of the upper cover 11 has multiple small holes 11-4 forming air outlets. These outlets prevent airflow recirculation, thus avoiding dust from flowing back out of the dust collection inlet. A first baffle 14 and a second baffle 15 are respectively located on the front and rear sides of the air outlet. The left and right sides of the first and second baffles 14 and 15 extend to the sides of the dust collection box's inner cavity, and their bottoms extend to the lower part of the inner cavity, forming a labyrinthine airflow channel. This partially obstructs the airflow towards the outlet, reducing its velocity and preventing dust from being discharged and creating dust storms. The second baffle 15 forms a settling area with the rear end of the dust collection box's inner cavity. This settling area connects to the labyrinthine airflow channel, forcing most of the dust to settle here, further preventing dust from flowing towards the air outlet.

[0046] The bottom of the lower housing 12 is sloped upwards from front to back, making it easier to disassemble the dust collection box for emptying. A raised baffle 16 is located at the end of the slope near the dust collection inlet. The baffle 16 is low enough that it does not obstruct the entry of waste into the dust collection box under the high airflow generated by the cleaning unit. Simultaneously, when the dust collection box is installed on the main unit for dust collection, it prevents waste from flowing out of the dust collection inlet, achieving better dust collection efficiency. A dust guide plate 17 is fixed to the bottom of the lower housing 12 at the outer end of the baffle 16. The dust guide plate 17 is angled downwards towards the roller brush 6, serving as a transition between the dust collection inlet and the roller brush 6, facilitating the entry of fine dust into the dust collection box and further improving the dust collection effect.

[0047] This embodiment avoids airflow recirculation by setting up an air outlet, preventing dust from flowing back out of the dust collection inlet. The first baffle 14 and the second baffle 15 partially obstruct the airflow on both sides of the outlet, reducing the airflow velocity and preventing dust from being discharged and creating dust storms. Simultaneously, the first baffle 14 creates a settling zone at the rear of the dust collection box, forcing most of the dust to settle there, further preventing dust from flowing to the outlet. Furthermore, the overall weight distribution of the machine is optimized, and a three-wheeled system at the bottom allows for better turning maneuvers.

[0048] The specific embodiments described above further illustrate the purpose, technical solution, and beneficial effects of this utility model. It should be understood that the above descriptions are merely specific embodiments of this utility model and are not intended to limit this utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. An electric sweeper, characterized in that: include Host; The cleaning unit, installed at the front of the main unit, is used to clean up debris; The dust collection box is detachably installed on the main unit and has a dust collection inlet facing the cleaning unit. The dust collection box has an air outlet and a baffle assembly at the air outlet, which forms a labyrinthine airflow channel in the inner cavity of the dust collection box.

2. The electric sweeper according to claim 1, characterized in that: The front end of the main unit is provided with a hollow cavity, and drive wheels are rotatably mounted on the main unit on both sides of the hollow cavity. The cleaning unit includes a drive motor located in the hollow cavity and a roller brush rotatably mounted below the hollow cavity. The output end of the drive motor is sequentially connected to the drive wheels and the roller brush.

3. The electric sweeper according to claim 2, characterized in that: The drive motor has an extension shaft coaxially fixed to the motor shaft on the side away from the output end. An axial flow fan facing the drive motor is coaxially fixed on the extension shaft. A row of air blowing holes is provided at the bottom of the hollow cavity along the length direction. The axial flow fan is located directly above the air blowing holes.

4. The electric sweeper according to claim 1, characterized in that: The main unit has a swivel wheel located between two drive wheels at the rear bottom.

5. An electric sweeper according to claim 1, characterized in that: The dust collection box includes an upper cover and a lower box body that are interlocked. The bottom sides and rear end of the upper cover are provided with a first extension and a second extension that extend downward. A positioning groove that matches the bottom shape of the upper cover is formed between the first extension and the second extension. The top of the lower box body is provided with a positioning plate that matches the positioning groove. The positioning plate is inserted into the positioning groove and is connected to the positioning groove by a locking part.

6. An electric sweeper according to claim 5, characterized in that: The locking part includes a buckle and a slot that engage with each other. The buckle is located on the outside of the positioning plate, and the slot is located on the first extension.

7. The electric sweeper according to claim 1, characterized in that: The main unit has a through groove running through the middle, the shape of which is adapted to the shape of the dust collection box, and a first stepped surface on its outer periphery. The outer periphery of the dust collection box has a second stepped surface adapted to the first stepped surface, and the first stepped surface supports the second stepped surface longitudinally.

8. An electric sweeper according to claim 1, characterized in that: The top of the dust collection box is provided with a downward-recessed sloping groove, and a handle fixed to the dust collection box is provided in the sloping groove.

9. An electric sweeper according to claim 1, characterized in that: The air outlet is provided with a first baffle and a second baffle on the sides near and away from the cleaning unit, respectively. The sides of the first baffle and the second baffle extend to the sides of the inner cavity of the dust collection box, and the bottom of both extends to the lower part of the inner cavity of the dust collection box, forming the labyrinth-type airflow channel. The second baffle and the rear end of the inner cavity of the dust collection box form a settling area, and the settling area is connected to the labyrinth-type airflow channel.

10. An electric sweeper according to claim 1, characterized in that: The top of the dust collection box has multiple small holes, which form the air outlet.

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