Cleaning base for surface cleaning equipment

Abstract

The invention relates to a cleaning base for surface cleaning equipment. The cleaning base comprises a shell; rolling brushing; the flexible scraper is located on the rear side of the rolling brush and extends in the longitudinal direction parallel to the axis of the rolling brush, the flexible scraper is provided with a fixed end, a free end and an arc-shaped section located between the fixed end and the free end, and the flexible scraper is attached to the bottom of the shell through the fixed end; the free end is configured to be in contact with a to-be-cleaned surface to wipe dirt and / or liquid particles, the arc-shaped section is provided with a first arc-shaped surface and a second arc-shaped surface which are deviated from each other, and a passing gap for garbage to pass through is formed between the first arc-shaped surface and the flexible bristles; a cavity is formed between the shell and part of the second arc-shaped surface, the cavity forms a deformation space of the arc-shaped section corresponding to the part of the second arc-shaped surface, a flexible liner is arranged in the cavity, and the hardness of the arc-shaped section is larger than that of the flexible liner. According to the cleaning base, large-particle garbage is allowed to be treated, and the use convenience of a user is improved.

Description

Technical Field

[0001] This invention relates to the field of cleaning equipment technology, and in particular to a cleaning base for surface cleaning equipment. Background Technology

[0002] Currently, there is a type of surface cleaning equipment on the market that incorporates a roller brush and a scraper component located behind the brush within a cleaning base. A narrow passage is formed between the scraper component and the brush bristles. During operation, the roller brush rotates at high speed driven by a motor, using friction with the surface to be cleaned to remove and agitate dirt, dust, and liquids. The debris and liquid particles lifted from the surface by the roller brush flow through the passage into a downstream collection container.

[0003] In existing technologies, to ensure efficient pickup of fluids and fine particles, the clearance between the roller brush and the scraper component is designed to be very small. However, this significantly limits the ability to handle unexpected large particles of debris (such as fruit pits, wads of paper, and cereal). Furthermore, in practical use, the fixed end of the scraper component is usually rigidly connected to the cleaning base. When such large particles are caught by the roller brush and attempt to pass through this narrow gap, the fixed end is not easily deformed, making it prone to clogging. Clogging can cause a series of serious problems: firstly, it immediately interrupts the cleaning process, requiring the user to manually clean the roller brush cavity, resulting in a poor user experience; secondly, the blockage may jam the roller brush, causing a sharp increase in motor load, generating abnormal noise, or even burning out the motor. Summary of the Invention

[0004] To address the aforementioned problems, the present invention aims to provide a cleaning base for surface cleaning equipment capable of picking up large particles of debris.

[0005] Therefore, the present invention provides a cleaning base for a surface cleaning device, comprising: a housing; a roller brush rotatable about a roller brush axis, the outer peripheral surface of the roller brush having flexible bristles configured to contact the surface to be cleaned and pick up dirt and liquid particles from the surface to be cleaned during rotation of the roller brush; and a flexible scraper located behind the roller brush and extending in a longitudinal direction parallel to the roller brush axis, the flexible scraper having a fixed end, a free end, and an arcuate segment located between the fixed end and the free end, the flexible scraper being attached to the bottom of the housing via the fixed end. The free end is configured to collect dirt and / or liquid particles by contacting the surface to be cleaned. The arcuate segment has a first arcuate surface facing the flexible bristles during the rotation of the roller brush and a second arcuate surface facing away from the first arcuate surface. A passage gap for debris to pass through is provided between the first arcuate surface and the flexible bristles. A cavity is provided between the housing and a portion of the second arcuate surface. The cavity constitutes the deformation space of the arcuate segment corresponding to that portion of the second arcuate surface. A flexible pad is disposed within the cavity. The hardness of the arcuate segment is greater than the hardness of the flexible pad.

[0006] In some embodiments, the flexible pad has opposing first and second surfaces, the first surface being fitted to the second arcuate surface and the second surface being fitted to the housing.

[0007] In some embodiments, the flexible pad has a first thickness measured between the first surface and the second surface, and the arcuate segment has a second thickness measured between the first arcuate surface and the second arcuate surface, wherein the first thickness is greater than the second thickness.

[0008] In some embodiments, the bottom of the housing includes a first support wall facing and abutting the second surface, the first support wall being arc-shaped, and the hardness of the first support wall being greater than the hardness of the arc-shaped segment.

[0009] In some embodiments, the bottom of the housing includes a second support wall located behind the first support wall, the upper part of the first support wall intersecting the upper part of the second support wall and the two being arranged in a downward-facing angular configuration.

[0010] In some embodiments, the flexible scraper is made of rubber and the flexible pad is made of EVA.

[0011] In some embodiments, the system further includes an inner support member, which is transversely positioned between the second support wall and the arcuate segment and located below the flexible pad, wherein the hardness of the inner support member is greater than that of the arcuate segment.

[0012] In some embodiments, the device further includes: a trash can having a trash inlet at the front, the front of the trash can including a front sidewall abutting against the second support wall and having an edge end defining the lower boundary of the trash inlet, the edge end intersecting with the fixed end.

[0013] In some embodiments, the flexible scraper has a scraper height measured between the free end and the fixed end, the roller brush has a roller brush radius, and the scraper height is less than the roller brush radius and greater than or equal to 1 / 2 of the roller brush radius.

[0014] In some embodiments, the size of the gap gradually increases from the free end to the fixed end.

[0015] Compared with the prior art, the beneficial effects of the present invention are as follows: In the technical solution of this application, due to the presence of the cavity and the flexible pad, the flexible pad acts as a support and buffer, ensuring stable contact between the scraper and the roller brush. Furthermore, the curved section of the flexible pad is allowed to deform moderately when encountering large particles of debris, thereby ensuring that these large particles can pass between the roller brush and the scraper, thus improving the cleaning base's ability to handle large particles of debris. In addition, the buffering effect of the flexible pad disperses the force on the scraper, preventing it from fatigue cracking due to long-term collisions with hard debris, while also reducing wear on the roller brush bristles and extending the lifespan of the core components. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of a surface cleaning device according to an embodiment of this application;

[0017] Figure 2 for Figure 1 A schematic diagram of the cleaning base shown;

[0018] Figure 3 for Figure 2 A cross-sectional view of the cleaning base shown in the diagram along the vertical direction;

[0019] Figure 4 This is a cross-sectional schematic diagram showing the connection of the housing, flexible scraper, flexible pad, fastener and garbage box according to one embodiment of this application;

[0020] Figure 5 This is a cross-sectional schematic diagram of the housing, flexible scraper, flexible pad, and fastener assembly according to one embodiment of this application;

[0021] Figure 6 This is a schematic diagram showing the positional relationship between the roller brush, flexible scraper, flexible pad, and fixing member according to an embodiment of this application;

[0022] Figure 7This is a cross-sectional schematic diagram of the flexible scraper, flexible pad, and fastener after they are joined together according to an embodiment of this application.

[0023] Figure 8 This is a schematic diagram of the flexible scraper and flexible pad of the roller brush of this application when feeding small particles of waste into the trash can;

[0024] Figure 9 This is a schematic diagram showing the deformation of the flexible scraper and flexible pad of the roller brush in this application when large particles of waste are fed into the trash can;

[0025] Figure 10 for Figure 9 A schematic diagram showing the flexible scraper and flexible pad returning to their original position after deformation. Detailed Implementation

[0026] like Figure 1 A surface cleaning device 100 is shown. The device 100 has a cleaning base 10 and a vertical body 20. The cleaning base 10 is mounted on the lower part of the vertical body 20 of the surface cleaning device 100 and can be moved along a hard surface to be cleaned, such as a floor, under the control of a user. The cleaning base 10 may be equipped with a driveable rotating roller brush, a removable dustbin, etc. In some embodiments, the cleaning base may also include a fluid distributor capable of providing water or steam cleaning media to the roller brush when necessary.

[0027] See Figure 1 and Figure 2 The diagram shows a schematic of the cleaning base 10. The cleaning base 10 includes a housing 1, a roller brush 2 mounted at the front of the housing 1 and capable of being driven to rotate about its own axis X1, a dustbin 3 detachably mounted inside the housing 1 and adjacent to the roller brush 2, and a rotary joint 4 hinged to the rear of the housing 1. The housing 1 is typically assembled from several injection-molded parts. The rotary joint 4 is used to engage with the lower part of the upright body 20. The cleaning base 10 typically also houses a motor (not shown) that drives the roller brush 2 to rotate, and necessary transmission components are arranged between the roller brush 2 and the motor. Alternatively, the motor that drives the roller brush to rotate can be built inside the roller brush itself.

[0028] The roller brush 2 is a cylindrical component comprising a hollow body 21 and flexible bristles 22 covering the outer peripheral surface of the body 21. The flexible bristles 22 are typically composed of microfibers with extremely strong capillary action, exhibiting water absorption and retention capabilities far exceeding those of ordinary fibers. They can "absorb" wastewater deep into the fibers, rather than simply leaving it on the surface, thus preventing dripping during roller brush rotation. The ends of the flexible bristles 22 are configured to contact the surface to be cleaned and pick up dirt and liquid particles from the surface during roller brush 2's rotation around its axis X1.

[0029] like Figure 3-7 As shown, the cleaning base 10 also includes a flexible scraper 5. The flexible scraper 5 is located behind the roller brush 2 and extends in a longitudinal direction parallel to the roller brush axis X1. The flexible scraper 5 has a fixed end 51, a free end 52, and an arcuate segment 53 located between the fixed end 51 and the free end 52. The flexible scraper 5 is attached to the bottom of the housing 1 via the fixed end 5. The free end 52 is configured to collect dirt and / or liquid particles by contacting the surface to be cleaned. The flexible scraper 5 has a scraper height H1 measured between the free end 52 and the fixed end 51. The roller brush 2 has a roller brush radius R1 measured between the roller brush axis X1 and the bristle tip 211. The scraper height H1 is less than the roller brush radius R1 and greater than or equal to half of the roller brush radius R1.

[0030] The arc-shaped segment 53 has a first arc-shaped surface 531 facing the roller brush 2 during rotation, a second arc-shaped surface 532 facing away from the first arc-shaped surface 531, and a lower surface 533 facing the surface to be cleaned. A passage gap 61 for waste to pass through is provided between the first arc-shaped surface 531 and the roller brush 2. This passage gap 61 preferably gradually increases from the free end 52 towards the fixed end 51.

[0031] The bottom of the housing 1 is provided with a first support wall 11 and a second support wall 12. The second support wall 12 is located behind the first support wall 11, and the upper part of the first support wall 11 intersects with the upper part of the second support wall 12, and the two are arranged in an angle with their openings facing downwards. The housing 1 is usually an injection-molded part made of plastic.

[0032] A flexible pad 7 is sandwiched between the arc-shaped segment 53 and the first support wall 11. The flexible pad 7 is positioned near the fixed end 51 of the flexible scraper 5. The flexible pad 7 is arc-shaped and extends along the second arc-shaped surface 532 of the arc-shaped segment 53. The first support wall 11 is also arc-shaped. The arc-shaped segment 53, the flexible pad 7, and the first support wall 11 have approximately the same curvature. The flexible pad 7 has opposing first surfaces 71 and second surfaces 72. The first surface 71 is in contact with the second arc-shaped surface 532. The second surface 72 is in contact with the first support wall 11. The hardness of the arc-shaped segment 532 is greater than that of the flexible pad 7, and the hardness of the first support wall 11 is greater than that of the arc-shaped segment 532; for example, the flexible pad 7 is made of EVA, the flexible scraper 53 is made of rubber, and the first support wall 11 is made of plastic.

[0033] The flexible pad 7 has a first thickness T1 measured between the first surface 71 and the second surface 72. The arcuate segment 53 has a second thickness T2 measured between the first arcuate surface 531 and the second arcuate surface 532. The ratio between the first thickness T1 and the second thickness T2 is 1-2:1.

[0034] The cleaning base 10 also includes an inner support member 8. The function of the inner support member 8 is to support the flexible scraper 5 so that it can always maintain its forward extension, preventing the flexible scraper 5 from bending or deforming when the surface cleaning device 100 encounters obstacles or moves backward. The inner support member 8 is positioned horizontally between the second support wall 12 and the arc-shaped segment 532 and close to the free end 52. In this example, the hardness of the inner support member 8 is greater than the hardness of the arc-shaped segment 53, thereby enabling it to support the flexible scraper 5.

[0035] The lower surface 53 of the flexible scraper 5 is provided with a plurality of longitudinally distributed protrusions 534. The plurality of protrusions 534 are configured to contact the surface to be cleaned.

[0036] The trash can 3 has a trash inlet 31 located at the front. The front of the trash can 3 includes a front sidewall 32. The front sidewall 32 has an edge end 321 that defines the lower boundary of the trash inlet 31. When the trash can 31 is installed in the housing 1, the lower edge end 321 abuts against the arcuate segment 53. The front sidewall 32 abuts against the second support wall 12, and the lower edge end 321 intersects with the fixed end 51.

[0037] like Figure 8-10 As shown, the free end 52 of the scraper 5 is positioned together with the inner support 8, making it less prone to deformation. A flexible pad 7 is provided on the back of the arc-shaped section 53 of the scraper 5 near the fixed end 512, allowing for deformation. Thus, small particles of waste 700 can enter the waste container 3 through the passage gap 61 without deformation of the scraper 5. When large particles of waste 800 enter through the passage gap 61, the presence of the flexible pad 7 allows these large particles of waste 800 to compress part of the arc-shaped section 53 as they move towards the waste inlet 31, causing it to deform in the direction of widening the passage gap 61. Thus, driven by the flexible bristles 22 of the roller brush 2, large particles of waste 800 can also be swept into the waste container 3.

[0038] The above embodiments are merely illustrative examples, and those skilled in the art can make equivalent substitutions or improvements within the scope of the claims. Other embodiments, besides the exemplary embodiments shown and described herein, are also covered within the scope of this invention.

Claims

1. A cleaning base for a surface cleaning device, comprising: case; A roller brush is rotatable about a roller brush axis. The outer peripheral surface of the roller brush is provided with flexible bristles, which are configured to contact the surface to be cleaned and pick up dirt and liquid particles from the surface to be cleaned during the rotation of the roller brush. A flexible scraper, located behind the roller brush and extending in a longitudinal direction parallel to the roller brush axis, has a fixed end, a free end, and an arcuate segment between the fixed end and the free end. The flexible scraper is attached to the bottom of the housing via the fixed end. The free end is configured to collect dirt and / or liquid particles by contacting the surface to be cleaned. The arcuate segment has a first arcuate surface facing the flexible bristles during roller brush rotation and a second arcuate surface facing away from the first arcuate surface. A passage gap for debris to pass through is provided between the first arcuate surface and the flexible bristles. The scraper is characterized by: The shell and a portion of the second arc-shaped surface have a cavity, which constitutes the deformation space of the arc segment corresponding to the portion of the second arc-shaped surface. A flexible pad is provided in the cavity, and the hardness of the arc segment is greater than the hardness of the flexible pad.

2. The cleaning base according to claim 1, characterized in that, The flexible pad has a first surface and a second surface, the first surface being fitted to the second arcuate surface, and the second surface being fitted to the housing.

3. The cleaning base according to claim 2, characterized in that, The flexible pad has a first thickness measured between the first surface and the second surface, and the arcuate segment has a second thickness measured between the first arcuate surface and the second arcuate surface, wherein the first thickness is greater than the second thickness.

4. The cleaning base according to claim 2, characterized in that, The bottom of the housing includes a first support wall facing and abutting the second surface. The first support wall is arc-shaped and has a hardness greater than that of the arc-shaped segment.

5. The cleaning base according to claim 4, characterized in that, The bottom of the housing includes a second support wall, which is located behind the first support wall. The upper part of the first support wall intersects with the upper part of the second support wall, and the two are arranged in an angle with their openings facing downwards.

6. The cleaning base according to claim 1, characterized in that, The flexible scraper is made of rubber, and the flexible pad is made of EVA.

7. The cleaning base according to claim 5, characterized in that, Also includes: An inner support member is placed transversely between the second support wall and the arc-shaped segment and located on the lower side of the flexible pad. The hardness of the inner support member is greater than that of the arc-shaped segment.

8. The cleaning base according to claim 5, characterized in that, Also includes: A trash can having a trash inlet at the front, the front of the trash can including a front sidewall that abuts against a second support wall and has an edge end that defines the lower boundary of the trash inlet, the edge end being connected to the fixed end.

9. The cleaning base according to claim 1, characterized in that, The flexible scraper has a scraper height measured between the free end and the fixed end, the roller brush has a roller brush radius, and the scraper height is less than the roller brush radius and greater than or equal to 1 / 2 of the roller brush radius.

10. The cleaning base according to claim 1, characterized in that, The size of the gap gradually increases from the free end to the fixed end.

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