A surface cleaning apparatus having a two-way dust-lift seal

Abstract

This utility model relates to the field of cleaning equipment technology and discloses a surface cleaning device with a bidirectional dust-raising and sealing structure. It includes a floor brush body with an air duct suction port at its bottom. The bidirectional dust-raising and sealing structure is located at the bottom of the floor brush body and includes a forward dust-raising and sealing component and a reverse dust-raising and sealing component, both of which are in contact with the cleaning surface. The forward dust-raising and sealing component is located in front of the air duct suction port, and the reverse dust-raising and sealing component is located behind the air duct suction port. By setting forward and reverse dust-raising and sealing components on the front and rear sides of the air duct suction port respectively, the floor brush can effectively contact the cleaning surface during both forward and reverse movements, ensuring that the complete process of dust raising, sealing, and suction is completed in both directions, thus overcoming the deficiency of traditional floor brushes that only effectively clean in one direction.

Description

Technical Field

[0001] This utility model relates to the field of cleaning equipment technology, specifically to a surface cleaning device with a bidirectional dust-sealing structure. Background Technology

[0002] Existing surface cleaning equipment has a significant flaw in its floor brush structure. Its air duct suction port only has a single dust-raising or sealing structure on the front side, while the rear side lacks an effective design. This one-sided layout results in a unidirectional limitation of the floor brush during operation. When the brush moves forward, the front dust-raising structure can raise and suck up dust; however, during the retraction process, due to insufficient dust raising and poor sealing at the rear, a large amount of dust can easily escape, seriously affecting cleaning efficiency.

[0003] The lack of a proper seal at the rear of the suction port disrupts the integrity of the negative pressure field, allowing outside air to rush in from the rear when the floor brush retracts. This weakens suction efficiency and disperses dust, causing some dust to re-settle and create secondary pollution, further reducing cleaning effectiveness. These issues hinder the improvement of cleaning equipment performance and urgently need to be addressed. Utility Model Content

[0004] The purpose of this invention is to overcome the shortcomings of the existing technology and provide a surface cleaning device with a bidirectional dust-sealing structure. By setting a high-efficiency dust-sealing structure on both the front and rear sides of the air duct suction port, the problem of low unidirectional cleaning efficiency and serious secondary pollution of the existing floor brush is solved.

[0005] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0006] A surface cleaning device with a bidirectional dust-sealing structure includes a floor brush body with an air duct suction port at the bottom. The bidirectional dust-sealing structure is disposed at the bottom of the floor brush body and includes a forward dust-sealing component and a reverse dust-sealing component, both of which are in contact with the cleaning surface. The forward dust-sealing component is located in front of the air duct suction port, and the reverse dust-sealing component is located behind the air duct suction port.

[0007] Optionally, the positive dust sealing assembly includes a roller brush rotatably mounted on the brush body, the outer periphery of the roller brush being surrounded by a bristle bundle, and the bristle bundle protruding from the outer circumferential surface of the roller brush.

[0008] Optionally, the fluff bundles are distributed in a spiral shape on the outer periphery of the roller brush.

[0009] Optionally, the fluff bundle interferes with the clean surface, and the interference amount is 1-3 mm.

[0010] Optionally, the reverse dust sealing assembly includes multiple soft rubber scrapers, which are arranged in an arc-shaped interval along the width direction of the floor brush body, with the center of the arc pointing towards the forward direction of the floor brush.

[0011] Optionally, the upper end of the soft rubber squeegee is fixedly connected to the main body of the floor brush, and the lower end of the soft rubber squeegee can swing back and forth.

[0012] Optionally, one end of the bottom of the soft rubber scraper has a gap with the cleaning surface, and the other end has an interference fit with the cleaning surface.

[0013] Optionally, the thickness of the soft rubber scraper gradually decreases from the head to the tail.

[0014] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0015] (1) In this utility model, by setting forward and reverse dust-raising and sealing components on the front and rear sides of the air duct suction port respectively, the floor brush can make effective contact with the cleaning surface when it is pushed forward and pulled back in the reverse direction, ensuring that the complete process of dust raising, sealing and dust suction can be completed in both directions, thus solving the defect of traditional floor brushes that only clean effectively in one direction.

[0016] (2) When the forward component is pushed forward, it stirs up the dust attached to the surface, and when the reverse component is pulled back, it disturbs the residual particles. Combined with the negative pressure effect of the air duct suction port, the overall dust removal efficiency is greatly improved.

[0017] (3) The two-way sealing design forms a closed negative pressure zone around the air duct suction port, which reduces the dust diffusion caused by air rushing in from the rear gap when pulling back, reduces the dust escape rate, avoids secondary pollution after cleaning, and eliminates the need to make up for missed suction by repeated one-way cleaning, thus improving ease of use.

[0018] (4) In this utility model, multiple soft rubber scrapers are arranged in an arc-shaped interval, and the center of the arc points to the forward direction. When pulled back, they can form an arc-shaped sweeping trajectory, increasing the contact range with the cleaning surface and effectively picking up the residual dust on the ground.

[0019] (5) The lower end of the soft rubber scraper can swing back and forth. When pulled back, it can adapt to the undulation of the ground and fit together. Combined with the arc arrangement, it forms a sealing area around the back of the air duct suction port, reducing negative pressure leakage. The close contact between the bottom interference end and the cleaning surface can prevent dust from escaping, while the gap end avoids airflow blockage caused by excessive sealing, balancing sealing and dust collection efficiency. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the surface cleaning device with a bidirectional dust-sealing structure in an embodiment of this utility model;

[0021] Figure 2 yes Figure 1A magnified view of a portion of point A in the middle;

[0022] Figure 3 This is a bottom view of the surface cleaning device with a bidirectional dust-sealing structure in an embodiment of this utility model;

[0023] Figure 4 This is a schematic diagram showing the position and structure of the reverse dust sealing component and the air duct suction port in an embodiment of this utility model;

[0024] The components include: 1. Floor brush body; 2. Air duct inlet; 3. Forward dust sealing assembly; 301. Roller brush; 302. Bristle bundle; 4. Reverse dust sealing assembly; 5. Main unit air duct; 6. Cleaning surface. Detailed Implementation

[0025] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. These drawings are simplified schematic diagrams, which are only used to illustrate the basic structure of the present invention in a schematic manner, and therefore only show the components related to the present invention.

[0026] Example 1, as Figure 1 and Figure 3 As shown, a surface cleaning device with a bidirectional dust-sealing structure is disclosed. The surface cleaning device can be a vacuum cleaner, a floor scrubber, etc. Taking a vacuum cleaner as an example, it includes a floor brush body 1. The bottom of the floor brush body 1 is provided with an air duct suction port 2, which is connected to the air duct 5 of the vacuum cleaner's main unit. After the vacuum cleaner is started, a vacuum negative pressure is generated in the air duct inside its main unit. As the floor brush body 1 moves forward and backward, the dirt on the surface 6 is swept through the air duct suction port 2 and enters the air duct 5 of the main unit under the action of the vacuum negative pressure suction to complete the cleaning.

[0027] The above-mentioned bidirectional dust sealing structure is located at the bottom of the brush body 1, including a forward dust sealing component 3 and a reverse dust sealing component 4. Both of them are in contact with the cleaning surface 6, and the forward dust sealing component 3 is located in front of the air duct suction port 2, while the reverse dust sealing component 4 is located behind the air duct suction port 2.

[0028] In the actual use of cleaning equipment, taking user operating habits as a reference, when the user holds the equipment and pushes the floor brush forward, this is the main direction of regular cleaning, defined as the positive direction; when the floor brush is pulled back towards the user, that is, it moves in the opposite direction to the positive direction, which is the reverse direction.

[0029] By installing forward and reverse dust-raising and sealing components 4 on the front and rear sides of the air duct suction port 2 respectively, the floor brush can effectively contact the cleaning surface 6 during both forward and reverse pull-back movements. This ensures that the complete process of dust raising, sealing, and suction is completed in both directions, overcoming the limitation of traditional floor brushes that only clean effectively in one direction. The forward component raises dust adhering to the surface during advancement, while the reverse component agitates residual particles during pull-back. Combined with the negative pressure effect of the air duct suction port 2, the overall dust removal efficiency is greatly improved.

[0030] The bidirectional dust-sealing structure is designed to address the force characteristics of both the forward and backward movements, enabling the surface cleaning equipment to meet the cleaning needs of different surfaces such as hard floors and carpets. This reduces surface damage or incomplete cleaning caused by unidirectional friction, and eliminates the need for repeated unidirectional sweeping to compensate for missed areas, thus shortening cleaning time, reducing ineffective energy consumption, extending battery life, and improving ease of use.

[0031] Example 2, as Figure 1 , Figure 2 and Figure 3 As shown, the forward dust sealing assembly 3 includes a roller brush 301 rotatably mounted on the brush body 1. A bristle bundle 302 is arranged around the outer periphery of the roller brush 301. The bristle bundle 302 protrudes from the outer circumferential surface of the roller brush 301 and is spirally distributed on the outer periphery of the roller brush 301. During use, the bristle bundle 302 interferes with the cleaning surface 6, with an interference amount H of 1-3mm. Here, the bristle bundle 302 can play a role in dust sealing, and the outer peripheral surface of the roller brush 301 also contacts the cleaning surface 6, which can play a sealing role.

[0032] During the rotation of the roller brush 301, the spirally arranged bristle bundles 302 can concentrate and push dirt from different directions of the cleaning surface 6 towards the air duct suction port 2, preventing dust and other dirt from escaping to both sides; the interference H between the bristle bundles 302 and the cleaning surface 6 is 1-3mm, which can effectively disturb the dust attached to the gaps in the floor or deep in the carpet fibers through mechanical friction, while avoiding excessive resistance or damage to the cleaning surface 6 due to excessive interference.

[0033] The spirally distributed pile 302 is evenly stressed during the rotation of the roller brush 301, which can avoid excessive local wear and extend the service life. Moreover, the interference of 1-3mm combined with the flexibility of the pile 302 allows the roller brush 301 to adapt to cleaning surfaces 6 with different hardness, such as hard floors, short-pile carpets, and long-pile carpets.

[0034] The rotary drive structure of the roller brush 301, as well as the main unit and dust cup of the vacuum cleaner, are existing technologies and will not be elaborated on here.

[0035] Example 3, as Figure 1 , Figure 2 and Figure 4 As shown, the reverse dust sealing assembly 4 includes multiple soft rubber scrapers. These scrapers are arranged in an arc-shaped interval along the width of the brush body 1, with the center of the arc pointing in the forward direction of the brush. The arc-shaped intervals of the multiple soft rubber scrapers, with the center of the arc pointing in the forward direction, better form a sealed space, ensuring smooth airflow. Simultaneously, when the brush retracts, it forms an arc-shaped sweeping trajectory, increasing the contact area with the cleaning surface 6 and effectively lifting residual dust from the ground.

[0036] As described above, the upper end of the soft rubber squeegee is fixedly connected to the main body 1 of the floor brush, and the lower end of the soft rubber squeegee can swing back and forth. When pulled back, it can adapt to the undulations of the ground and fit together with the arc-shaped arrangement to form a sealing area around the back of the air duct suction port 2, reducing negative pressure leakage.

[0037] Furthermore, there is a gap between one end of the bottom of the soft rubber squeegee and the cleaning surface 6, while the other end interferes with the cleaning surface 6. The soft rubber squeegee adopts a structure that is lower near the middle of the floor brush and higher at the other end, with the lower end of the soft rubber maintaining a gap with the cleaning surface 6, and the higher end of the soft rubber interfering with the cleaning surface 6 during use.

[0038] One end of the interference mechanism can directly disturb stubborn dust, while the other end, with its gap design, provides a flow channel for the dust, guiding it towards the suction port 2. Simultaneously, the tight contact between the bottom interference end and the cleaning surface 6 prevents dust escape, while the gap avoids excessive sealing that could obstruct airflow, thus balancing sealing and suction efficiency.

[0039] In addition, the thickness of the soft rubber scraper gradually decreases from the head to the tail. This design makes the tail of the scraper more deformable and allows it to flexibly conform to different material surfaces when pulled back, reducing damage caused by hard friction. The thicker head ensures structural strength, while the thinner tail reduces overall movement resistance and avoids operation jamming due to excessive resistance when pulling back.

[0040] The soft rubber scraper is made of wear-resistant material. One end of it is close to the roller brush 301, which is the tail, and the other end is the head. The arc-shaped arrangement and the height difference at the bottom form a guide slope that tilts towards the air duct suction port 2. Combined with the airflow direction when pulling back, it can push the dust raised to the suction port area in a directional manner, reducing the accumulation of dust on the outside of the scraper.

[0041] Specifically, the multiple soft rubber scrapers are divided into three groups: a middle group and two groups on the left and right. The soft rubber scraper in the middle has an inverted V-shaped structure, with its head in the middle and its tail at both ends. The number of soft rubber scrapers in the left and right groups is equal, and they are symmetrically distributed around the center line of the middle soft rubber scraper. That is, the soft rubber scrapers are inclined at a certain angle relative to the axis of the roller brush 301, and the multiple soft rubber scrapers have overlapping projections from the middle to both ends.

[0042] The working principle of the surface cleaning device with a bidirectional dust-raising and sealing structure proposed in this utility model is that the special structures on both sides of the air duct suction port 2 work together to complete the closed-loop process of dust raising, sealing, and dust suction when the device is pushed forward and pulled back in the opposite direction, as detailed below:

[0043] (1) After the cleaning equipment is started, the vacuum motor generates a continuous negative pressure through the air duct suction port 2. The positive dust sealing component 3 (front end) and the reverse dust sealing component 4 (rear end) at the bottom of the floor brush are both in a preset contact state with the cleaning surface 6, such as the initial interference or gap between the bristle bundle 302, the soft rubber scraper and the ground.

[0044] (2) Forward propulsion stage: The roller brush 301 at the front end of the floor brush rotates, and the bristle bundles 302 distributed in a spiral on the outer periphery rotate with the roller brush 301. Through a ground interference of 1-3mm, the cleaning surface 6 (such as floor, carpet) is patted and swept, and the dispersed dust is gathered towards the center of the air duct suction port 2.

[0045] Both the roller brush 301 and the bristle bundle 302 are in contact with the ground, which can reduce the amount of external air that flows directly into the air duct suction port 2 from the front end of the floor brush and maintain the stability of the negative pressure at the suction port. At this time, the reverse dust sealing component 4 (the soft rubber scraper at the rear end) moves forward and the lower end of the soft rubber scraper swings slightly with the undulation of the ground. The arc-shaped scraper forms a rear auxiliary seal, preventing the dust raised at the front end from escaping from the tail of the floor brush and ensuring that most of the dust is confined to the area in front of the suction port.

[0046] (3) Reverse pull-back stage: The multiple soft rubber scrapers at the rear end of the floor brush come into contact with the cleaning surface 6 during the pull-back action. Because the scrapers are arranged in an arc-shaped interval, the bottom of the scraper forms a sweeping angle with the ground during the pull-back. The end that interferes with the ground directly scrapes the ground, picking up the residual dust and sticky stains that were not cleaned during the forward push. The end that has a gap with the ground provides a channel for the dust that is raised. With the guiding effect of the arc structure, the dust is guided to the air duct suction port 2.

[0047] The lower end of the soft rubber scraper can swing back and forth, and when pulled back, it adapts to the unevenness of the ground. The arc-shaped arrangement forms an elastic sealing area around the rear side of the air duct intake 2. The interference end is in close contact with the ground, preventing dust from escaping from the gap at the rear end. The gap end avoids airflow blockage caused by excessive sealing, ensuring that the negative pressure can effectively suck up the dust. The thickness of the soft rubber scraper gradually decreases from the head to the tail, so that the flexible deformation of the tail further enhances the sealing adaptability.

[0048] In summary, the surface cleaning device with a bidirectional dust-seal structure proposed in this utility model has forward and reverse dust-seal components installed on both sides of the air duct suction port 2 at the bottom of the floor brush, forming a bidirectional synergistic cleaning structure. The forward component uses a roller brush 301 with spirally distributed bristle bundles 302, which rotates and beats with an interference of 1-3mm to achieve deep dust dispersion, while forming a flexible sealing strip to guide the airflow for dust suction. The reverse component is a soft rubber scraper with arc-shaped intervals, with one end of the bottom interference and the other end gap, which can swing and sweep away residual dust with the pull-back action. The bidirectional cooperation of the front and rear air duct negative pressure forms an omnidirectional closed-loop cleaning, solving the problems of low efficiency and secondary pollution of traditional equipment with unidirectional cleaning.

[0049] In the description of this utility model, it should be understood that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating orientation or positional relationships, are based on the orientation or positional relationships 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, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, features defined with "first," "second," etc., may explicitly or implicitly include one or more of that feature. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more.

[0050] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" 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 or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0051] Based on the preferred embodiments of this utility model described above, those skilled in the art can make various changes and modifications without departing from the technical concept of this utility model. The technical scope of this utility model is not limited to the contents of the specification, but must be determined according to the scope of the claims.

Claims

1. A surface cleaning apparatus having a bidirectional dust-lifting seal, comprising a floor brush body, a bottom of the floor brush body being provided with an air duct suction port, characterized in that: The bidirectional dust lifting sealing structure is arranged at the bottom of the floor brush body, and comprises a forward dust lifting sealing assembly and a reverse dust lifting sealing assembly, both of which are in contact with the cleaning surface, and the forward dust lifting sealing assembly is located at the front side of the air duct suction port, and the reverse dust lifting sealing assembly is located at the rear side of the air duct suction port.

2. The surface cleaning apparatus of claim 1, wherein: The forward dust lifting sealing assembly comprises a rolling brush rotatably arranged on the floor brush body, and a bundle of bristles is arranged around the outer periphery of the rolling brush, and the bundle of bristles protrudes from the outer circumferential surface of the rolling brush.

3. The surface cleaning apparatus of claim 2, wherein: The bundle of bristles is helically distributed around the outer periphery of the rolling brush.

4. The surface cleaning apparatus of claim 3, wherein: The bundle of bristles interferes with the cleaning surface, and the interference amount is 1-3mm.

5. The surface cleaning apparatus of claim 1, wherein: The reverse dust lifting sealing assembly comprises a plurality of soft rubber scraping strips, and the plurality of soft rubber scraping strips are arranged in an arc shape along the width direction of the floor brush body, and the arc center points to the advancing direction of the floor brush.

6. The surface cleaning apparatus of claim 5, wherein: The upper end of the soft rubber scraping strip is fixedly connected with the floor brush body, and the lower end of the soft rubber scraping strip can swing forward and backward.

7. The surface cleaning apparatus of claim 6, wherein: There is a gap between one end of the bottom of the soft rubber scraping strip and the cleaning surface, and the other end interferes with the cleaning surface.

8. The surface cleaning apparatus of claim 7, wherein: The thickness of the soft rubber scraping strip gradually decreases from the head to the tail.

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