Coating roller brush suitable for internal and external corners
By designing a painting roller brush suitable for inside and outside corners, and using a bent board and locking structure, the problems of uneven coating and frequent switching of traditional roller brushes at inside and outside corners are solved, achieving efficient and pollution-free coating application.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-27
- Publication Date
- 2026-03-10
AI Technical Summary
Traditional roller brushes are difficult to fully adhere to inside and outside corners, resulting in uneven paint application, frequent touch-ups, and contamination issues caused by tool switching.
Design a coating roller brush suitable for inside and outside corners, using a board carrier and paint head bent at a certain angle, combined with a locking structure and a rotatable corner brush to achieve efficient coating of inside and outside corners.
It achieves uniform coating at inside and outside corners, reduces the amount of touch-up work, improves construction efficiency, and avoids paint pollution.
Smart Images
Figure CN223984218U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of coating roller technology, specifically a coating roller brush suitable for inside and outside corners. Background Technology
[0002] Inside and outside corners are part of building construction. Inside corners refer to recessed corners, such as the angle between the top surface and the corners of the surrounding walls. Outside corners refer to protruding corners, such as the angle between two walls at a corner in a corridor. Inside and outside corners of a wall are generally 90 degrees. Due to the limitations of shape and material, traditional roller brushes are difficult to fully adhere to these corners, resulting in uneven paint application, low application frequency, and the need for frequent touch-ups. Technicians often cause an increase in rework rates due to improper handling of inside and outside corners. At the same time, the need to frequently switch between different roller brushes and corner brushes reduces the effective working time. Paint drips during tool switching can also easily cause pollution. Summary of the Invention
[0003] To overcome the shortcomings of the prior art, this utility model provides a painting roller brush suitable for inside and outside corners. The painting roller brush uses a plate carrier bent at a certain angle and a paint head to coat areas in inside and outside corners that are not easy to coat, providing construction workers with a more convenient and efficient painting solution.
[0004] To achieve the above objectives, a coating roller brush suitable for inside and outside corners is designed, including a gripper and a paint head. The gripper is fitted with a locking structure, and the top of the gripper has a connecting recess. The connecting recess cooperates with the connecting protrusion on the paint head, so that the gripper and the paint head are rotatably connected. The paint head includes a paint roller, a fixed hinge, a fixed rocker arm, a connecting shaft, and an inside corner brush. The paint head has a fixed hinge inside, one end of the fixed rocker arm is connected to the fixed hinge, and the other end of the fixed rocker arm is connected to the paint roller. The paint head has grooves at both ends, and the connecting shaft is located inside the grooves. The connecting shaft has a rotatable inside corner brush.
[0005] The locking structure includes a locking sleeve, a locking handle, a locking rib, and a locking slider. The locking sleeve is fitted onto the gripper rod. A locking rib is provided on one side of the locking sleeve. The locking rib is rotatably connected to the locking handle. The locking sleeve is divided into a movable locking slider that contacts the locking handle.
[0006] The grab bar includes an upper pull rod and a lower pull rod.
[0007] The pull rod end of the gripper bar is wrapped with gripping rubber.
[0008] The paint roller and the fixed hinge are provided in twos, and the two paint rollers are pressed against each other.
[0009] The coating head is equipped with limiting covers on both the front and rear sides.
[0010] Compared with the prior art, this utility model can be applied to the inner corner of the angle between two walls, eliminating the need for touch-ups due to uneven coating, thus increasing the effective working time of construction workers and reducing the amount of paint required. Attached Figure Description
[0011] Figure 1 This is a schematic diagram of the structure of this utility model.
[0012] Figure 2 This is a cross-sectional view of the structure of this utility model.
[0013] Figure 3 This is a magnified view of a portion of the locking structure.
[0014] See Figures 1 to 3 1 is the gripping rod, 1.1 is the upper pull rod, 1.2 is the lower pull rod, 2 is the gripping rubber, 3 is the locking structure, 3.1 is the locking sleeve, 3.2 is the locking handle, 3.3 is the locking rib, 3.4 is the locking slider, 4 is the connecting concave block, 4.1 is the connecting protrusion, 5 is the paint head, 5.1 is the paint roller, 5.2 is the fixed hinge, 5.3 is the fixed rocker arm, 6 is the connecting shaft, 7 is the corner brush, and 8 is the limit cover. Detailed Implementation
[0015] The present invention will be further described below with reference to the accompanying drawings. Example 1
[0016] like Figure 1 As shown, a locking structure 3 is fitted onto the gripper 1, and a connecting recess 4 is provided at the top of the gripper 1. The connecting recess 4 cooperates with the connecting protrusion 4.1 on the paint head 5, so that the gripper 1 and the paint head 5 are rotatably connected. The paint head 5 includes a paint roller 5.1, a fixed hinge 5.2, a fixed rocker arm 5.3, a connecting shaft 6, and a corner brush 7, as shown. Figure 2 As shown, the paint head 5 has a fixed hinge 5.2 inside. One end of the fixed rocker arm 5.3 is connected to the fixed hinge 5.2, and the other end of the fixed rocker arm 5.3 is connected to the paint roller 5.1. There are two paint rollers 5.1 and two fixed hinges 5.2. The two paint rollers 5.1 are pressed against each other. The paint roller 5.1 is used for paint on flat surfaces and external corners. By inserting the external corner between the two paint rollers 5.1, it can be ensured that the edge of the external corner is evenly coated with paint.
[0017] The locking structure 3 includes a locking sleeve 3.1, a locking handle 3.2, a locking rib 3.3, and a locking slider 3.4. The locking sleeve 3.1 is sleeved on the gripper 1. A locking rib 3.3 is provided on one side of the locking sleeve 3.1. The locking rib 3.3 is rotatably connected to the locking handle 3.2. The locking sleeve 3.1 is divided into a movable locking slider 3.4, which contacts the locking handle 3.2. The surface of the locking handle 3.2 is provided with a protrusion. After the locking handle 3.2 is rotated, the locking slider 3.4 is pushed inward through the protrusion. The inner side of the locking slider 3.4 contacts and is fixed to the upper pull rod 1.1 of the gripper 1.
[0018] The grab bar 1 includes an upper pull rod 1.1 and a lower pull rod 1.2. The upper pull rod 1.1 is sleeved in the lower pull rod 1.2, so that the upper pull rod 1.1 can realize the telescopic function.
[0019] The end of the pull rod 1.2 of the gripping lever 1 is wrapped with gripping rubber 2. The gripping rubber 2 increases the friction between the technician's hand and the gripper, preventing the technician from slipping and dropping the paint roller when working at a high position.
[0020] Limiting covers 8 are provided on the front and rear sides of the paint head 5. The limiting covers 8 lock the left and right distance of the paint rollers 5.1 to prevent the distance between the paint rollers 5.1 from being too large and affecting the paint effect. At the same time, the limiting covers 8 have a certain degree of extensibility. When squeezed by the paint head 5, they can move outward slightly and return to their original position when not squeezed. Example 2
[0021] This embodiment only describes the differences from Embodiment 1; the similarities will not be repeated.
[0022] The difference between this embodiment and embodiment one is that the paint head 5 has grooves at both ends, and a connecting shaft 6 is provided inside the grooves. A rotatable corner brush 7 is provided on the connecting shaft 6. By rotating the paint head 5 to a suitable angle, the corner brush 7 can be inserted into the corner to apply paint to the inside of the corner, which is originally difficult to reach.
[0023] In the specific implementation of this utility model, technicians will adjust the length of the overall gripping rod 1 by pulling out the upper pull rod 1.1 to adapt to painting operations at different heights. For normal flat painting operations, the paint roller 5.1 can be rolled normally for painting. When encountering a corner, the corner is clamped inside the two paint rollers 5.1, and the paint rollers 5.1 simultaneously paint the two edges of the corner. When encountering a corner, the angle between the paint head 5 and the gripping rod 1 can be adjusted by rotating the paint head 5, and the corner brush 7 on one side of the paint head 5 can be extended into the concave corner to paint the concave corner.
Claims
1. A painting roller brush suitable for use in a corner, comprising a handle and a paint head, characterised in that: The locking structure (3) is arranged on the grab rod (1), the top end of the grab rod (1) is provided with a connecting concave block (4), the connecting concave block (4) is matched with a connecting convex block (4.1) on the paint head (5), the grab rod (1) and the paint head (5) are rotationally connected, the paint head (5) comprises a paint roller (5.1), a fixed hinge (5.2), a fixed rocker arm (5.3), a connecting shaft (6) and a corner brush (7), the fixed hinge (5.2) is arranged in the paint head (5), one end of the fixed rocker arm (5.3) is connected to the fixed hinge (5.2), the other end of the fixed rocker arm (5.3) is connected to the paint roller (5.1), the paint head (5) is provided with a groove at two ends, the connecting shaft (6) is arranged in the groove, and the corner brush (7) is rotatably arranged on the connecting shaft (6).
2. A painting roller brush suitable for use in a corner, according to claim 1, characterized in that: The locking structure (3) comprises a locking sleeve (3.1), a locking handle (3.2), a locking rib (3.3) and a locking sliding block (3.4), the locking sleeve (3.1) is arranged on the grab rod (1), one side of the locking sleeve (3.1) is provided with the locking rib (3.3), the locking rib (3.3) is rotationally connected with the locking handle (3.2), and the locking sliding block (3.4) is movably arranged in the locking sleeve (3.1) and in contact with the locking handle (3.2).
3. A painting roller brush suitable for use in a cove according to claim 1, characterized in that: The grab rod (1) comprises an upper pull rod (1.1) and a lower pull rod (1.2).
4. A painting roller brush suitable for use in a corner, according to claim 1, characterized in that: The lower pull rod (1.2) of the grab rod (1) is wound with a rubber (2) at the end.
5. A painting roller brush suitable for use in a corner, according to claim 1, characterized in that: The paint roller (5.1) and the fixed hinge (5.2) are respectively provided with two, and the two paint rollers (5.1) are pressed against each other.
6. A painting roller brush suitable for use in a cove corner according to claim 1, characterized in that: The paint head (5) is provided with a limiting cover (8) on the front and rear sides.