Sealing structure of scraper and scrubber

Abstract

The sealing structure comprises an inlet and outlet (1) and a scraper (2), the scraper (2) is movably matched with the inlet and outlet (1) in a telescopic mode, the inlet and outlet (1) is provided with an upper sealing strip (3) and a lower sealing strip (4) on the upper side and the lower side of the scraper (2) respectively, the upper sealing strip (3) is elastically arranged in a downward jacking mode, and the lower sealing strip (4) is elastically arranged in a upward jacking mode. The sealing structure of the scraper is beneficial to improving the sealing performance; the utility model further provides a scrubber which comprises the sealing structure of the scraper.

Description

Technical Field

[0001] This utility model relates to the technical field of surface cleaning devices, specifically a sealing structure for a scraper and a floor scrubber. Background Technology

[0002] Floor brushes are important cleaning functional units in surface cleaning devices, such as vacuum cleaners, floor scrubbers, and robotic vacuum cleaners. Floor brushes include roller brushes. To meet the needs of scraping dirt, existing technology has proposed a cleaning floor brush with variable extrusion amount, for example, including a scraper assembly, a water spray assembly, and a drive component. The scraper assembly includes a plate connected to the water spray assembly and having a plate that rotates about a second axis. The drive component is used to apply a force to the scraper assembly toward the roller brush to rotate, thereby driving the plate to rotate relative to the water spray assembly to achieve a first position and a second position.

[0003] Because the amount of extrusion is variable, the scraper (i.e., the scraper of the scraper assembly) needs to have a certain amount of room to move. This creates gaps in the movement, and dirt can escape into these gaps, causing dirt accumulation and, in other words, leading to sealing problems.

[0004] Therefore, this application proposes a sealing structure for a scraper to improve sealing performance. Summary of the Invention

[0005] The technical problem to be solved by the present invention is to overcome the defects of the prior art and propose a sealing structure for a scraper to improve sealing performance; it also proposes a floor scrubber including the aforementioned sealing structure for a scraper.

[0006] Compared with the prior art, the present invention proposes a sealing structure for a scraper, including an inlet and an outlet and a scraper. The scraper and the inlet and outlet are retractably and movably matched. An upper sealing strip and a lower sealing strip are respectively provided on the upper and lower sides of the inlet and outlet. The upper sealing strip is elastically downward and the lower sealing strip is elastically upward.

[0007] Compared with the prior art, the present invention has the following advantages after adopting the above structure:

[0008] This disclosure improves upon the design by installing an upper sealing strip and a lower sealing strip on the upper and lower sides of the scraper at the inlet and outlet. The upper sealing strip is elastically positioned downwards, and the lower sealing strip is elastically positioned upwards. This provides good sealing on both sides of the scraper, thereby enhancing the sealing performance. Furthermore, the scraper is positioned along the axial direction of the roller brush, matching or even exceeding the length of the roller brush. Therefore, this design significantly reduces the problem of dirt and grime accumulation.

[0009] In some embodiments, the lower sealing strip, scraper, and upper sealing strip are arranged sequentially along the rotation direction of the roller brush, and the lower sealing strip includes an upwardly curved end that is provided with an interference fit relative to the outer peripheral wall of the roller brush.

[0010] In some embodiments, the end portion is configured as an arc-shaped portion.

[0011] In some embodiments, the upper sealing strip is recessed relative to the front end of the scraper.

[0012] In some embodiments, the upper sealing strip is provided with a downward protrusion at the inlet and outlet, which constitutes the downward extension interference of the upper sealing strip. The scraper is subjected to a reverse force from the downward protrusion by pressing it, and this reverse force is also used to maintain the squeezing direction of the scraper pressing the outer peripheral wall of the roller brush.

[0013] In some embodiments, where the upper sealing strip is recessed relative to the front end of the scraper, the downward protrusion is recessed relative to the front end of the scraper. Attached Figure Description

[0014] Figure 1 This is a three-dimensional schematic diagram of a floor brush after the roller brush has been removed.

[0015] Figure 2 This is a top view of the floor brush after the roller brush has been removed.

[0016] Figure 3 This is a schematic diagram of a sectional view along the AA direction.

[0017] Figure 4 This is a schematic diagram of the AA-direction section after the scraper has been removed.

[0018] Figure 5 This is an enlarged schematic diagram of A.

[0019] Figure 6 This is a schematic sectional view along the AA direction after the roller brush has been installed.

[0020] The attached diagram shows the following labels: 1-Inlet / outlet, 2-Scraper, 3-Upper sealing strip, 4-Lower sealing strip, 5-Roller brush, 6-End, 7-Downward protrusion, 8-Ground brush, 9-Top rod, 10-Back plate, 11-Front end. Detailed Implementation

[0021] The following description is intended to disclose the present invention and enable those skilled in the art to implement it. The embodiments described below are merely examples, and other obvious variations will arise for those skilled in the art. The basic principles of the invention defined in the following description can be applied to other embodiments, modifications, improvements, equivalents, and other technical solutions that do not depart from the spirit and scope of the invention.

[0022] Those skilled in the art should understand that, in the disclosure of this invention, the terms "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention 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. Therefore, the above terms should not be construed as limiting this invention.

[0023] This disclosure provides a floor scrubbing machine, including a machine body and a floor brush 9. The floor brush 9 is connected to the lower end of the machine body and is equipped with a scraper 2 with variable squeezing amount.

[0024] like Figure 1 The image shows a floor brush 8 without the roller brush 5 installed. Figure 6 The roller brush 5 is installed, and the floor brush 8 is provided with a scraper 2 with variable squeezing amount and an inlet and outlet 1 on the side of the roller brush 5. The scraper 2 with variable squeezing amount adopts the sealing structure of the scraper 2 disclosed in this invention.

[0025] like Figure 3 , 4 Figures 5 and 6 show a sealing structure for scraper 2, and can also be referenced. Figure 1 The sealing structure of the scraper 2 includes an inlet / outlet 1 and a scraper 2. The scraper 2 and the inlet / outlet 1 are telescopically movable. The inlet / outlet 1 is provided with an upper sealing strip 3 and a lower sealing strip 4 on the upper and lower sides of the scraper 2, respectively. The upper sealing strip 3 is elastically downward and the lower sealing strip 4 is elastically upward.

[0026] The upper sealing strip 3 and the lower sealing strip 4 can be fixed to the inlet / outlet 1 by a snap-fit ​​structure or by screws. Any fixing structure applicable to this disclosure can be used.

[0027] In some embodiments, such as Figure 5 , 6 As shown, Figure 6 The middle arrow indicates the rotation direction of the roller brush 1. The lower sealing strip 4, scraper 2, and upper sealing strip 3 are arranged sequentially along the rotation direction of the roller brush 5. The lower sealing strip 4 includes an upwardly curved end 6, which has an interference fit relative to the outer peripheral wall of the roller brush 5. In this way, the upward curve and the interference fit facilitate the end 6 to extend into the outer peripheral wall of the roller brush 1 along with the compression of the front end 11. When the roller brush 1 rotates, the outer peripheral wall of the roller brush 1 can compress the lower side of the end 6, so that the end 6 can reliably fit and seal against the lower side of the front end 11. Since the upper sealing strip 3 is retracted inside, the outer peripheral wall of the roller brush 1 cannot compress the upper sealing strip 3. Therefore, the upper sealing strip 3 and the lower sealing strip 4 form a preferred sealing solution with high reliability during long-term operation of the roller brush 1.

[0028] Preferably, in order to better compress the end 6, the end 6 is configured as an arc-shaped portion.

[0029] Furthermore, such as Figure 5 As shown, the upper sealing strip 3 has a downward protrusion 7 at the inlet / outlet 1. The downward protrusion 7 constitutes the downward extension interference of the upper sealing strip 3. The scraper 2 is subjected to the reverse force of the downward protrusion 7 by pressing the downward protrusion 7. This reverse force is also used to maintain the squeezing direction of the scraper 2 pressing the outer peripheral wall of the roller brush 5.

[0030] How to drive scraper 4, in this example, as follows: Figure 3 As shown, a back plate 10 is provided on the rear side of the scraper 4, and the rear side of the back plate 10 can abut against the front end of the push rod 9. In this way, the rear side of the back plate 10 and the front end of the push rod 9 are separately set, and the front end of the push rod 9 will not interfere with the movement of the scraper 4. This is conducive to the scraper 4 adapting to a suitable posture when subjected to force, while the push rod 9 is only responsible for the pressure of the front push and will not be adversely affected by the force generated by the rotation of the roller brush 1 on the scraper 4 itself.

[0031] The working principle of this disclosure is that if the roller brush 1 is new, the position of the scraper 4 can be considered as zero. As the roller brush 1 wears out, the scraper 4 will gradually move forward under the action of the push rod 9. The front end 11 of the scraper 4 can reliably press against the outer peripheral wall of the roller brush 1. Due to the presence of the downward protrusion 7, the front end 11 of the scraper 4 can be kept in the pressing direction and will not be overturned by the roller brush 1. In this example, the downward protrusion 7 presses the front end 11 of the scraper 4 downward, thereby keeping the front end 11 in the pressing direction.

[0032] To better maintain the compression direction and facilitate sealing, such as Figure 5 As shown, the downward protrusion 7 is recessed relative to the front end 11 of the scraper (2). Preferably, the downward protrusion 7 is as close as possible to the inlet / outlet (1), so that the downward protrusion 7 has a larger power arm relative to the front end 11.

[0033] When understanding this disclosure, the above structure may be referred to other embodiments / appendices if necessary. Figure 1 And that's understood, so I won't go into details here.

[0034] The above description is merely an illustrative embodiment of the present invention. Therefore, all equivalent changes or modifications made to the structure, features, and principles described in the scope of protection of the present invention are included within the scope of protection of the present invention.

Claims

1. A sealing structure for a scraper, comprising an inlet / outlet (1) and a scraper (2), wherein the scraper (2) is retractably and movably engaged with the inlet / outlet (1), characterized in that, The inlet / outlet (1) is provided with an upper sealing strip (3) and a lower sealing strip (4) on the upper and lower sides of the scraper (2), respectively. The upper sealing strip (3) is elastically downward and the lower sealing strip (4) is elastically upward.

2. The sealing structure of the scraper as described in claim 1, characterized in that, The lower sealing strip (4), scraper (2), and upper sealing strip (3) are arranged sequentially along the rotation direction of the roller brush (5), and the lower sealing strip (4) includes an upwardly curved end (6) which has an interference fit relative to the outer peripheral wall of the roller brush (5).

3. The sealing structure of the scraper as described in claim 2, characterized in that, The end (6) is set as an arc-shaped part.

4. The sealing structure of the scraper as described in claim 3, characterized in that, The upper sealing strip (3) is recessed relative to the front end (11) of the scraper (2).

5. The sealing structure of the scraper as described in claim 1, 2, or 4, characterized in that, The upper sealing strip (3) is provided with a downward protrusion (7) at the inlet (1). The downward protrusion (7) constitutes the downward extension interference of the upper sealing strip (3). The scraper (2) is subjected to the reverse force of the downward protrusion (7) by squeezing the downward protrusion (7). The reverse force is also used to maintain the squeezing direction of the scraper (2) squeezing the outer peripheral wall of the roller brush (5).

6. The sealing structure of the scraper as described in claim 5, characterized in that, In the case where the upper sealing strip (3) is recessed relative to the front end (11) of the scraper (2), the downward protrusion (7) is recessed relative to the front end (11) of the scraper (2).

7. A floor scrubbing machine, comprising a body and a floor brush (8), wherein the floor brush (8) is connected to the lower end of the body, and the floor brush (8) is provided with a scraper (2) with variable squeezing amount, characterized in that, The scraper (2) is provided with a sealing structure that employs the scraper described in any one of claims 1 to 6.

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