A sweeper with a scraping strip

Abstract

The utility model provides a kind of scraping strip for sweeper, its section includes the installation part for being fixed with sweeper, and by the scraping part for sweeping ground that installation part extends obliquely downward to cleaning advancing direction;Scraping part has first flexible part and second flexible part arranged along its length direction, and the position of first flexible part on scraping part is higher than second flexible part, and scraping part can bend back along first flexible part and / or second flexible part when cleaning advancing is subjected to certain degree of resistance.In the case of sweeper meets carpet and so on higher than ground, scraping part will bend back along first flexible part with large radius, so that sweeper passes smoothly;And when the height of sweeper from ground is inconsistent due to error, according to the resistance that scraping part bottom is subjected to, it is adaptively bent back with small radius to maintain contact force with ground, so that the same model different height of sweeper from ground can maintain consistent noise size and cleaning effect.

Description

Technical Field

[0001] This utility model relates to the technical field of robot vacuum cleaner accessories, specifically a scraper for a robot vacuum cleaner. Background Technology

[0002] In addition to the sweeping brush, the bottom of a robotic vacuum cleaner is equipped with a flexible scraper to remove dust and water stains. During use, the scraper makes close contact with the ground and tilts in the direction of travel to scoop up and suck up dust and water stains. However, existing scrapers have the following problems: 1. When encountering carpets or other surfaces higher than the ground, the scraper cannot move forward, easily generating loud noise or causing the vacuum cleaner to idle; 2. The scraper is usually an extruded strip component with a fixed and consistent cross-sectional height. However, the robotic vacuum cleaner itself has a complex structure and many parts, and certain errors are inevitable during the production and assembly process. This leads to errors in the gap between the scraper and the ground. When the scraper makes excessive contact with the ground, it is not only noisy but also easily damaged. When there is a gap between the scraper and the ground, the cleaning effect will decrease. Utility Model Content

[0003] The purpose of this invention is to provide a scraper that can adapt to different ground heights and different ground clearances of sweepers.

[0004] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0005] A scraper blade for a sweeper is integrally molded from plastic material into a strip shape. Its cross-section includes a mounting part for fixing to the sweeper, and a scraping part for sweeping the floor extending obliquely downward from the mounting part in the sweeping direction. The scraping part has a first flexible part and a second flexible part arranged along its length direction, and the first flexible part is positioned higher than the second flexible part on the scraping part. When the scraping part encounters a certain degree of resistance in the sweeping direction, it can bend backward along the first flexible part and / or the second flexible part.

[0006] In a preferred embodiment, the scraper is molded from the same plastic material, and the first flexible part and the second flexible part are thin structures with a thickness thinner than other parts of the scraping part.

[0007] In a preferred embodiment, both the first flexible portion and the second flexible portion are located on the rear side of the scraping portion.

[0008] In a preferred embodiment, both the first flexible portion and the second flexible portion are arc-shaped concave shapes formed on the scraping portion.

[0009] In a preferred embodiment, the bottom edge cross-sectional profile of the scraping part is a convex circular arc.

[0010] In a preferred embodiment, the front side of the scraping part is provided with convex ridges evenly distributed along the length of the scraper strip at a position corresponding to the position below the second flexible part.

[0011] In a preferred embodiment, the cross-sectional profile of the convex ridges is a convex circular arc.

[0012] The beneficial effects of the above solution are as follows: When the sweeper encounters a carpet or other object higher than the ground during its forward movement, the scraping section will bend backward in a large radius along the first flexible section due to the resistance of the carpet, allowing the sweeper to pass smoothly. When the sweeper's height from the ground is inconsistent due to errors, the height of the scraping section is set to match the sweeper's maximum height from the ground. Then, based on the resistance received by the bottom edge of the scraping section, it will bend backward in a small radius to maintain contact with the ground. This ensures that the same model can maintain a consistent noise level and cleaning effect even with different ground clearance errors. Attached Figure Description

[0013] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0014] Figure 1 This is a three-dimensional structural diagram of the scraper in the embodiment;

[0015] Figure 2 This is a schematic diagram of the end face structure of the scraper in the embodiment. Detailed Implementation

[0016] The present invention will be further described below with reference to the accompanying drawings:

[0017] refer to Figure 1 and Figure 2 As shown, a scraper blade for a sweeper is integrally molded from plastic material into a strip shape. Its cross-section includes a mounting part 1 for fixing to the sweeper, and a scraping part 2 for sweeping the floor extending obliquely downward from the mounting part 1 in the sweeping direction. The scraping part 2 has a first flexible part 21 and a second flexible part 22 arranged along its length direction, and the first flexible part 21 is positioned higher than the second flexible part 22 on the scraping part 2. When the scraping part 2 encounters a certain degree of resistance in the sweeping direction, it can bend backward along the first flexible part 21 and / or the second flexible part 22.

[0018] During the sweeper's forward movement, when encountering carpets or other objects higher than the ground, the scraping section 2 will bend backward along the first flexible section 21 with a large radius due to the resistance of the carpet, allowing the sweeper to pass smoothly. When the sweeper's height from the ground is inconsistent due to errors, the height of the scraping section 2 is set to match the sweeper's maximum height from the ground. Then, based on the resistance received by the bottom edge 23 of the scraping section 2, it will bend backward with a small radius to maintain contact with the ground. This ensures that the same model can maintain a consistent noise level and cleaning effect even with different ground clearance errors.

[0019] In a preferred embodiment, the scraper strip is molded from the same plastic material, while the first flexible part 21 and the second flexible part 22 are thinner than other parts of the scraping part 2. Using the same material for molding and having thin flexible parts simplifies production and reduces costs. In other embodiments, the flexible parts can be molded from a different flexible material such as silicone, but this would slightly increase production costs.

[0020] In a preferred embodiment, both the first flexible portion 21 and the second flexible portion 22 are located on the rear side of the scraping portion 2. This maintains the front side of the scraping portion 2 in a shovel-shaped plane and prevents the scraping portion 2 from easily bending and deforming forward, thus reducing the contact force with the ground.

[0021] In a preferred embodiment, both the first flexible portion 21 and the second flexible portion 22 are arc-shaped concave shapes formed on the scraping portion 2.

[0022] In a preferred embodiment, the bottom edge 23 of the scraping part 2 has a convex arc profile. When the bottom edge 23 of the scraping part 2 is a convex arc, the friction with the ground can be reduced, thereby reducing cleaning noise.

[0023] In a preferred embodiment, the front side of the scraping part 2 of this embodiment has evenly distributed protruding ribs 24 along the length of the scraper blade at positions corresponding to the area below the second flexible part 22. Furthermore, the cross-sectional profile of each protruding rib 24 is a convex arc. When the area below the second flexible part 22 of the scraping part 2 bends backward to different degrees, it can contact the ground through the protruding ribs 24 at different positions, thereby reducing cleaning noise.

[0024] The above description does not limit the technical scope of this utility model. Any modifications, equivalent changes and alterations made to the above embodiments based on the technical essence of this utility model shall still fall within the scope of the technical solution of this utility model.

Claims

1. A scraper blade for a sweeper, integrally molded from plastic material into a strip shape, characterized in that: Its cross-section includes a mounting portion for fixing to a sweeper, and a scraping portion for sweeping the floor extending obliquely downward from the mounting portion in the sweeping direction; the scraping portion has a first flexible portion and a second flexible portion arranged along its length direction, and the first flexible portion is positioned higher than the second flexible portion on the scraping portion; when the scraping portion encounters a certain degree of resistance in the sweeping direction, it can bend backward along the first flexible portion and / or the second flexible portion; the scraper is molded from the same plastic material, and the first flexible portion and the second flexible portion are thin structures with a thickness thinner than other parts of the scraping portion; the first flexible portion and the second flexible portion are both located on the rear side of the scraping portion.

2. The scraper blade for a sweeper according to claim 1, characterized in that: Both the first flexible part and the second flexible part are arc-shaped concave shapes formed on the scraping part.

3. A scraper blade for a sweeper according to claim 1, characterized in that: The bottom edge cross-sectional profile of the scraping part is a convex circular arc.

4. A scraper blade for a sweeper according to claim 3, characterized in that: The front side of the scraping part is evenly distributed with raised ridges along the length of the scraper, corresponding to the position below the second flexible part.

5. A scraper blade for a sweeper according to claim 4, characterized in that: The cross-sectional profile of the convex ridges is a convex circular arc.

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