Roller brush for painting wall paint

By designing an adjustable-length roller brush structure and scraper, the problem of uneven paint thickness caused by a fixed roller brush length was solved, achieving uniform paint application and improving the smoothness of the wall surface.

CN223922578UActive Publication Date: 2026-02-17GUANGZHOU YIWEI BUILDING MATERIALS CO LTD
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Patent Information

Application Number
CN202520197494.0
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2025-02-08
Publication Date
2026-02-17
Estimated Expiration
2035-02-08

AI Technical Summary

Technical Problem

The existing roller brushes cannot adjust the length of the brush as needed, resulting in uneven paint thickness and affecting the smoothness of the wall surface.

Method used

A roller brush structure was designed, comprising a connecting triangular plate, a mounting box, a fixing component, a limit wheel, and a scraper. The length of the roller brush is adjusted by the limit wheel and a gear system, and the paint is evenly applied by the scraper.

Benefits of technology

It allows for adjustment of the roller brush length as needed, ensuring even coating and improving the brushing effect.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model relates to the technical field of roller brushes, in particular to a roller brush for painting wall paint, which comprises a connecting triangular plate. The device further comprises a mounting box and a fixing assembly. When the roller brush is too long, the limiting plate is pressed, the limiting plate rotates outside the mounting box, the limiting plate is separated from the limiting stepless wheel, the limiting stepless wheel relieves limitation, the fixing plate on one side is pulled, the fixing plate drives the gear outside the toothed plate to rotate, the gear drives the toothed plate on the other side to slide inside the mounting box, and adjustment is conducted according to the length of the roller brush; a scraper blade is inserted into a connecting plate, then a bolt is rotated to fix the scraper blade, the scraper blade can uniformly scrape and coat a place brushed by a roller brush along with the movement of the device, and a coil spring can drive the scraper blade in the connecting plate outside a rotating rod to continuously adjust the scraper blade according to the force of a user. And it is ensured that the scraping plate evenly scrapes the coating, the device can be adjusted according to needs, the coating can be evenly brushed in a rolling mode, and the brushing effect is improved.
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Description

Technical Field

[0001] This utility model relates to the field of roller brush technology, and in particular to roller brushes for applying wall paint. Background Technology

[0002] The roller brush used when applying wall paint is usually called a "paint roller" or "coating roller". This type of roller brush consists of a handle and a roller head covered with synthetic fibers or natural hair, the type of hair on the roller head being selected according to the type of paint and the desired surface finish.

[0003] Existing roller brushes are typically of a fixed size, making it impossible to adjust the length of the brush as needed. Furthermore, when using roller brushes to paint walls, the manual application results in uneven paint thickness, leading to an uneven wall surface and affecting the painting effect. Therefore, roller brushes for applying wall paint are needed to solve these problems. Utility Model Content

[0004] To overcome the problem that the length of the roller brush cannot be adjusted as needed, and that manual brushing results in uneven paint thickness, leading to an uneven wall surface and affecting the paint application effect.

[0005] The technical solution of this utility model is as follows: a roller brush for applying wall paint, including a connecting triangular plate; it also includes a mounting box and a fixing component. A fixing nail is provided inside the connecting triangular plate, and the mounting box is connected to the top of the connecting triangular plate. The fixing component is provided to the top of the mounting box. A limit wheel is rotatably connected inside the mounting box, and a limiting plate is fixedly connected to the outside of the mounting box. A spring is provided on the inner side of the limiting plate. A gear is fixedly connected to the top of the limit wheel, and a toothed plate meshes with the gear. A fixing plate is fixedly connected to the outside of the toothed plate. A rotating rod is rotatably connected inside the fixing plate, and a limiting plate is fixedly connected to the outside of the fixing plate. A coil spring is provided at the midpoint between the outside of the rotating rod and the inside of the fixing plate. A connecting plate is fixedly connected to the top of the rotating rod, and a bolt is threaded inside the connecting plate. A scraper is slidably connected inside the connecting plate, and a sliding rod is fixedly connected to the outside of the fixing plate.

[0006] Preferably, a through hole is provided at the corresponding position of the sliding rod of the mounting box, and the sliding rod is slidably connected inside the through hole of the toothed plate.

[0007] Preferably, a through hole is provided at the corresponding position of the mounting box and the gear, and the gear is rotatably connected inside the through hole of the mounting box.

[0008] Preferably, a through hole is provided at the corresponding position of the toothed plate and the sliding rod, and the sliding rod passes through the mounting box and is slidably connected inside the toothed plate.

[0009] Preferably, through holes are provided at corresponding positions of the mounting box and the toothed plate, and the toothed plate is slidably connected inside the mounting box.

[0010] Preferably, the toothed plate and sliding rod are arranged in two sets, with the toothed plate and sliding rod symmetrically arranged inside the mounting box.

[0011] Preferably, the fixing component includes a rotating block rotatably connected inside the fixing plate, a connecting block fixedly connected to the outside of the rotating block, a second spring fixedly connected inside the connecting block, a push plate fixedly connected to the outside of the second spring, and a roller brush provided on the outside of the push plate.

[0012] Preferably, four sets of push plates are provided, and the four sets of push plates are arranged in a circumferential array outside the connecting block.

[0013] The beneficial effects of this utility model are as follows: When the roller brush is too long, pressing the limiting plate causes it to rotate outside the mounting box, disengaging it from the limit wheel. With the limit wheel released, pulling one side of the fixing plate causes the gear on the outside of the toothed plate to rotate, which in turn causes the toothed plate on the other side to slide inside the mounting box. This allows for adjustment based on the length of the roller brush. The scraper is inserted into the connecting plate, and then the bolts are turned to fix it. When using this device, the scraper will evenly coat the areas previously brushed by the roller brush as the device moves. The coil spring drives the scraper inside the connecting plate outside the rotating rod to continuously adjust the scraper according to the user's pressure, ensuring even coating. This facilitates adjustment of the device as needed, promotes even coating, and improves the brushing effect. Attached Figure Description

[0014] Figure 1 The diagram shown is a schematic representation of the overall structure of the roller brush for applying wall paint according to this utility model.

[0015] Figure 2 The diagram shown is a schematic representation of the roller brush adjustment assembly for applying wall paint according to this utility model.

[0016] Figure 3 The diagram shown is a schematic representation of the limiting structure of the roller brush adjustment component for applying wall paint according to this utility model.

[0017] Figure 4 The diagram shown is a schematic representation of the scraping structure of the roller brush adjustment assembly for applying wall paint according to this utility model.

[0018] Figure 5 The diagram shown is a structural schematic of the roller brush fixing assembly for applying wall paint according to this utility model.

[0019] Explanation of reference numerals in the attached diagram: 1. Connecting triangle plate; 21. Mounting box; 22. Limiting wheel; 23. Limiting plate; 24. Spring 1; 25. Gear; 26. Toothed plate; 27. Fixing plate; 28. Coil spring; 29. ​​Limiting plate; 210. Rotating rod; 211. Connecting plate; 212. Bolt; 213. Scraper; 214. Sliding rod; 31. Rotating block; 32. Connecting block; 33. Spring 2; 34. Push plate; 35. Roller brush; 4. Fixing nail. Detailed Implementation

[0020] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0021] Please see Figures 1-5This utility model provides an embodiment of a roller brush for applying wall paint, including a connecting triangular plate 1; it also includes a mounting box 21 and a fixing component. A fixing nail 4 is provided inside the connecting triangular plate 1. The mounting box 21 is connected to the top of the connecting triangular plate 1. A fixing component is provided on the top of the mounting box 21. A limiting wheel 22 is rotatably connected inside the mounting box 21. A limiting plate 23 is fixedly connected to the outside of the mounting box 21. A spring 24 is provided on the inner side of the limiting plate 23. A gear 25 is fixedly connected to the top of the limiting wheel 22. A toothed plate 26 meshes with the outside of the gear 25. A fixing plate 27 is fixedly connected to the outside of the toothed plate 26. A rotating rod 210 is rotatably connected inside the fixing plate 27. A fixing component is fixed to the outside of the fixing plate 27. A limiting plate 29 is fixedly connected to the rotating rod 210. A coil spring 28 is provided at the midpoint between the outer side of the rotating rod 210 and the inner side of the fixed plate 27. A connecting plate 211 is fixedly connected to the top of the rotating rod 210. A bolt 212 is threadedly connected to the inside of the connecting plate 211. A scraper 213 is slidably connected to the inside of the connecting plate 211. A sliding rod 214 is fixedly connected to the outside of the fixed plate 27. When the roller brush 35 is too long, pressing the limiting plate 23 causes the limiting plate 23 to rotate outside the mounting box 21, causing the limiting plate 23 to disengage from the limit wheel 22. With the limit wheel 22 released, pulling one side of the fixed plate 27 causes the fixed plate 27 to drive the gear 25 on the outside of the toothed plate 26 to rotate, causing the gear 25 to drive the toothed plate 26 on the other side. The scraper 213 slides inside the mounting box 21, thus adjusting according to the length of the roller brush 35. The scraper 213 is inserted into the connecting plate 211, and then the bolt 212 is rotated to fix the scraper 213. When using the device, the scraper 213 will evenly coat the areas brushed by the roller brush 35 as the device moves. The coil spring 28 drives the rotating rod 210, and the scraper 213 inside the connecting plate 211 is continuously adjusted according to the user's pressure, ensuring even coating. A through hole is provided at the corresponding position of the sliding rod 214 in the mounting box 21. The sliding rod 214 is slidably connected inside the through hole of the toothed plate 26. Due to the installation of the sliding rod 214... 4. Facilitates the sliding of the fixing plate 27; through holes are provided at corresponding positions of the mounting box 21 and the gear 25, and the gear 25 is rotatably connected inside the through hole of the mounting box 21. Due to the setting of the gear 25, it is beneficial to drive the toothed plate 26 to slide inside the mounting box 21; through holes are provided at corresponding positions of the toothed plate 26 and the sliding rod 214, and the sliding rod 214 passes through the mounting box 21 and is slidably connected inside the toothed plate 26. Due to the setting of the sliding rod 214, it is beneficial to limit the sliding direction of the fixing plate 27; through holes are provided at corresponding positions of the mounting box 21 and the toothed plate 26, and the toothed plate 26 is slidably connected inside the mounting box 21. Due to the setting of the toothed plate 26, it is beneficial to adjust the spacing between the fixing plates 27;The toothed plate 26 and sliding rod 214 are arranged in two sets, symmetrically inside the mounting box 21. The mounting box 21 provides a foundation for installing other components.

[0022] Please see Figure 5 In this embodiment, the fixing component includes a rotating block 31, which is rotatably connected to the inside of the fixing plate 27. A connecting block 32 is fixedly connected to the outside of the rotating block 31. A second spring 33 is fixedly connected inside the connecting block 32. A push plate 34 is fixedly connected to the outside of the second spring 33. A roller brush 35 is provided on the outside of the push plate 34. The roller brush 35 is provided to facilitate the application of paint. Four sets of push plates 34 are arranged in a circumferential array outside the connecting block 32. The push plates 34 are provided to help fix the roller brush 35 in conjunction with the second spring 33.

[0023] During operation, when the roller brush 35 becomes too long, pressing the limiting plate 23 causes it to rotate outside the mounting box 21, disengaging it from the limit wheel 22. With the limit wheel 22 released, pulling one side of the fixing plate 27 causes the gear 25 on the outside of the toothed plate 26 to rotate, causing the gear 25 to slide inside the mounting box 21. The roller brush 35 is then inserted into the outside of the push plate 34. The spring 23 inside the rotating block 31 pushes the push plate 34 away from the inner wall of the roller brush 35, thus fixing the roller brush 35. Then, pushing the fixing plate 27 causes the push plate 34 on the other side to enter the roller brush 35 and fix it in place. Releasing the limiting plate 23 allows the spring 24 to push the limiting plate... 23 contacts the limit wheel 22, thereby re-limiting the limit wheel 22, thus completing the installation of the roller brush 35. Then, according to the distance between the rotating rods 210, a suitable scraper 213 is selected and inserted into the interior of the connecting plate 211. The scraper 213 is fixed by rotating inside the connecting plate 211 through the bolt 212. When using the device, as the roller brush 35 rolls on the wall, the scraper 213 scrapes the area brushed by the roller brush 35 evenly. The scraper 213 will scrape the area brushed by the roller brush 35 evenly as the device moves. The coil spring 28 will drive the scraper 213 inside the connecting plate 211 outside the rotating rod 210 to continuously adjust the scraper 213 according to the user's force, thereby ensuring that the scraper 213 scrapes the paint evenly.

[0024] Through the above steps, when the roller brush 35 is too long, pressing the limiting plate 23 causes it to rotate outside the mounting box 21, disengaging it from the limit wheel 22. With the limit wheel 22 released, pulling one side of the fixing plate 27 causes the gear 25 outside the toothed plate 26 to rotate, causing the gear 25 to slide inside the mounting box 21 on the other side. This allows adjustment based on the length of the roller brush 35. The scraper 213 is then inserted into the connecting plate 211. Inside, the screw 212 is then rotated to fix the scraper 213. When the device is in use, the scraper 213 will scrape the area that the roller brush 35 has brushed evenly as the device moves. The coil spring 28 will drive the scraper 213 inside the connecting plate 211 outside the rotating rod 210 to continuously adjust the scraper 213 according to the user's force, thereby ensuring that the scraper 213 scrapes the paint evenly. This is beneficial for adjusting the device as needed, making it easier to roll the paint evenly and improve the brushing effect.

[0025] The embodiments of the present invention have been described in detail above with reference to the accompanying drawings. However, the present invention is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present invention.

Claims

1. A roller brush for applying wall paint, comprising a connecting triangular plate (1); characterized in that: It also includes a mounting box (21) and a fixing component. The interior of the connecting triangle plate (1) is provided with fixing nails (4). The top of the connecting triangle plate (1) is connected to the mounting box (21). The top of the mounting box (21) is provided with a fixing component. The interior of the mounting box (21) is rotatably connected to a limit wheel (22). The exterior of the mounting box (21) is fixedly connected to a limiting plate (23). The inner side of the limiting plate (23) is provided with a spring (24). The top of the limit wheel (22) is fixedly connected to a gear (25). The exterior of the gear (25) is meshed with a toothed plate (26). The fixed plate (27) is fixedly connected to the outside. The fixed plate (27) is rotatably connected to the inside of the fixed plate (27). The fixed plate (27) is fixedly connected to the outside of the fixed plate (27) by a limit plate (29). A coil spring (28) is provided at the middle position between the outside of the rotating rod (210) and the inside of the fixed plate (27). The top of the rotating rod (210) is fixedly connected to a connecting plate (211). The connecting plate (211) is threadedly connected to a bolt (212). The connecting plate (211) is slidably connected to a scraper (213). The fixed plate (27) is fixedly connected to the outside of the fixed plate (27) by a sliding rod (214).

2. The roller brush for applying wall paint according to claim 1, characterized in that: A through hole is provided at the corresponding position of the sliding rod (214) of the mounting box (21), and the sliding rod (214) is slidably connected inside the through hole of the toothed plate (26).

3. The roller brush for applying wall paint according to claim 1, characterized in that: Through holes are provided at the corresponding positions of the mounting box (21) and the gear (25), and the gear (25) is rotatably connected inside the through hole of the mounting box (21).

4. The roller brush for applying wall paint according to claim 1, characterized in that: Through holes are provided at corresponding positions of the toothed plate (26) and the sliding rod (214), and the sliding rod (214) passes through the mounting box (21) and is slidably connected inside the toothed plate (26).

5. The roller brush for applying wall paint according to claim 1, characterized in that: Through holes are provided at corresponding positions of the mounting box (21) and the toothed plate (26), and the toothed plate (26) is slidably connected inside the mounting box (21).

6. The roller brush for applying wall paint according to claim 1, characterized in that: The toothed plate (26) and sliding rod (214) are arranged in two sets, and the toothed plate (26) and sliding rod (214) are symmetrically arranged inside the mounting box (21).

7. The roller brush for applying wall paint according to claim 1, characterized in that: The fixing component includes a rotating block (31), which is rotatably connected inside the fixing plate (27). A connecting block (32) is fixedly connected to the outside of the rotating block (31). A second spring (33) is fixedly connected inside the connecting block (32). A push plate (34) is fixedly connected to the outside of the second spring (33). A roller brush (35) is provided on the outside of the push plate (34).

8. The roller brush for applying wall paint according to claim 7, characterized in that: The push plate (34) is provided in four sets, and the four sets of push plates (34) are arranged in a circular array outside the connecting block (32).