A portable painting tool
The quick-release component design allows for rapid disassembly and installation of the roller brush using a single-handed operation with a wedge and lever, solving the problems of laborious and wear-prone traditional threaded connections and improving the operational efficiency and safety of the painting tool.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- SHANDONG QINGCHAO NEW MATERIALS CO LTD
- Filing Date
- 2025-07-14
- Publication Date
- 2026-06-05
Smart Images

Figure CN224320380U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of painting tool technology, and in particular to a convenient painting tool. Background Technology
[0002] Portable painting tools are core equipment for small-area repairs and corner construction. Their ease of operation directly affects work efficiency. Currently, there is a significant market demand for integrated tools that combine paint storage and roller brush functions, especially requiring quick replacement of roller brushes and paint bottles to adapt to changing working conditions. A convenient painting tool is designed to meet the needs of such high-efficiency work scenarios.
[0003] Existing portable painting tools generally adopt mechanical connection structures. The paint bottle and brush box are usually fixed by external screws, and the axial locking force is generated by the thread engagement. The roller brush assembly often adopts a plug-in design. After the connecting rod is inserted into the brush box, it is tightened by the side wall screws, or it relies on elastic buckles to achieve circumferential limitation. Such structures rely on rotation fastening or tool-assisted locking. Their technical principle is based on mechanical interference and friction self-locking.
[0004] However, traditional threaded connection methods have significant drawbacks. When replacing or cleaning the roller brush, the connecting parts need to be repeatedly screwed on. During operation, one hand needs to hold the main body and the other hand needs to rotate it. When working at height, the tool is prone to falling due to unstable force. Frequent screwing will also accelerate thread wear and cause seal failure. This problem seriously restricts construction efficiency, especially in gradient coating scenarios that require frequent roller brush replacement. Utility Model Content
[0005] To overcome the above shortcomings, this utility model provides a convenient painting tool, which aims to improve the problem of inconvenient replacement of traditional connections.
[0006] To achieve the above objectives, the present invention provides the following technical solution: a convenient painting tool, comprising a paint bottle, a bottle mouth fixedly connected to the upper surface of the paint bottle, an interface provided on the inner wall of the bottle mouth, a connecting component provided on the outer wall of the interface, a brush box fixedly connected to the upper surface of the interface, a roller brush provided inside the brush box, a connecting rod provided on the inner wall of the brush box, and a quick-release component provided at one end of the connecting rod;
[0007] The quick-release assembly includes a slot and a locking rod. The slot is formed through one side of the inner wall of the connecting rod. A connecting cover is fitted onto one end of the connecting rod. The outer wall of the locking rod is slidably connected to the inner wall of the connecting cover. An inclined block is slidably connected to the inner wall of the connecting cover. A button is fixedly connected to one end of the inclined block. The outer wall of the button is slidably connected to the inner wall of the connecting cover.
[0008] Furthermore, the connecting component includes a first half-ring and a second half-ring. One end of the first half-ring is rotatably connected to the outer wall of the interface, and one end of the second half-ring is rotatably connected to the outer wall of the interface. A hook is fixedly connected to one side of the outer wall of the first half-ring, and a slot is provided on one side of the outer wall of the second half-ring. A block is provided inside the second half-ring, and the hook is provided inside the slot.
[0009] Furthermore, the card slot engages with the card block, and a push button is fixedly connected to the outer wall of the card block.
[0010] Furthermore, a spring three is provided inside the second half-locking ring, and one end of the spring three is fixedly connected to the upper surface of the locking block.
[0011] Furthermore, a limiting block is fixedly connected to one end of the connecting rod, and the limiting block is located outside the brush box.
[0012] Furthermore, a spring is sleeved on the outer wall of the lever, and one end of the spring is fixedly connected to the inner wall of the connecting cover.
[0013] Furthermore, a second spring is provided inside the connecting cover, and one end of the second spring is fixedly connected to the outer wall of the inclined block.
[0014] Furthermore, one set of the half-clamping ring is disposed on the outer wall of the bottle mouth, and the other set of the half-clamping ring is disposed on the outer wall of the bottle mouth.
[0015] This utility model has the following beneficial effects:
[0016] In this invention, the quick-release assembly can drive the inclined block to slide by pressing the button with a single finger. The spring pushes the locking rod to retract radially and disengage from the slot, so that the connecting rod and the connecting cover are separated instantly. This process can be completed by one hand and one step, which can quickly disassemble the roller brush assembly, significantly improving the efficiency of replacement or cleaning. The spring mechanism automatically resets the locking rod to the locked position after the button is released, ensuring the reliability of the next assembly and solving the problem of time-consuming and laborious traditional threaded connections.
[0017] In this utility model, the connecting component adopts a rotary closed semi-locking ring design. When closed, the hook automatically inserts into the slot. A light push of the push button drives the locking block to horizontally engage with the gap between the hook body to complete the locking. Spring 3 provides continuous locking force. When disassembling, a light push of the push button in the opposite direction releases the locking block constraint, and the semi-locking ring springs open and separates. No twisting operation is required throughout the process, which can achieve a stable connection or separation of the paint bottle and the brush box, greatly reducing the assembly complexity and avoiding the risk of thread wear. The operation is accompanied by a clicking sound to improve easy identification. Attached Figure Description
[0018] Figure 1 This is a three-dimensional structural diagram of a convenient painting tool proposed in this utility model;
[0019] Figure 2This is a schematic diagram of the quick-release component structure of a convenient painting tool proposed in this utility model;
[0020] Figure 3 for Figure 2 Enlarged view of point A in the middle;
[0021] Figure 4 This is a schematic diagram of the connecting component structure of a convenient painting tool proposed in this utility model;
[0022] Figure 5 for Figure 4 Enlarged diagram of point B in the middle.
[0023] Legend:
[0024] 1. Paint bottle; 2. Bottle mouth; 3. Interface; 4. Brush box; 5. Roller brush; 6. Connecting rod; 7. Limiting block; 8. Hole groove; 9. Connecting cover; 10. Inclined block; 11. Button; 12. Locking rod; 13. Spring 1; 14. Spring 2; 15. Half-locking ring 1; 16. Half-locking ring 2; 17. Locking hook; 18. Locking groove; 19. Locking block; 20. Push button; 21. Spring 3. Detailed Implementation
[0025] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0026] Reference Figures 1-5This utility model provides an embodiment of a convenient painting tool, comprising a paint bottle 1 as a paint storage container for easy replacement. A bottle mouth 2 is fixedly connected to the upper surface of the paint bottle 1. An interface 3 is provided on the inner wall of the bottle mouth 2, and a connecting component is provided on the outer wall of the interface 3. A brush box 4 is fixedly connected to the upper surface of the interface 3. The internal cavity accommodates a roller brush 5 and is provided with a paint distribution grid. The roller brush 5 is disposed inside the brush box 4, and its bristle density is adapted to the characteristics of water-based and oil-based paints. A connecting rod 6 is provided on the inner wall of the brush box 4 to connect the brush box 4 and the roller brush 5. A quick-release component is provided at one end of the connecting rod 6. The component includes a slot 8 and a locking rod 12. The slot 8 is formed through one side of the inner wall of the connecting rod 6. A connecting cover 9 is fitted onto one end of the connecting rod 6 to support the quick-release assembly. The outer wall of the locking rod 12 is slidably connected to the inner wall of the connecting cover 9. A wedge 10 is slidably connected to the inner wall of the connecting cover 9 to convert the axial movement of the button 11 into the radial displacement of the locking rod 12. One end of the wedge 10 is fixedly connected to the button 11. The outer wall of the button 11 is slidably connected to the inner wall of the connecting cover 9. The connecting assembly includes a first half-locking ring 15 and a second half-locking ring 16. One end of the first half-locking ring 15 is rotatably connected to the outer wall of the interface 3. The second half-locking ring 16... One end of the 16 is rotatably connected to the outer wall of the interface 3. A hook 17 is fixedly connected to one side of the outer wall of the first half-ring 15. The hook head has a trapezoidal bevel for easy closure. A groove 18 is opened on one side of the outer wall of the second half-ring 16 to accommodate the hook 17. A locking block 19 is provided inside the second half-ring 16. The hook 17 is located inside the groove 18, forming a mechanical interlock after closure. The groove 18 and the locking block 19 are engaged. A push button 20 is fixedly connected to the outer wall of the locking block 19. A spring 21 is provided inside the second half-ring 16 to provide a restoring force. One end of the spring 21 is fixedly connected to the upper surface of the locking block 19. One end of the connecting rod 6 is fixedly connected to a limiting block 7, the diameter of which is larger than the inlet of the brush box 4 to prevent excessive insertion. The limiting block 7 is set outside the brush box 4. The outer wall of the locking rod 12 is fitted with a spring 13. Under normal conditions, the locking rod 12 is pushed into the slot 8 to achieve self-locking. One end of the spring 13 is fixedly connected to the inner wall of the connecting cover 9. The connecting cover 9 is equipped with a spring 14, which drives the inclined block 10 to reset. One end of the spring 14 is fixedly connected to the outer wall of the inclined block 10. The half-locking ring 15 is fitted on the outer wall of the bottle mouth 2. The half-locking ring 16 is fitted on the outer wall of the bottle mouth 2. After closing, it forms a complete constraint with the half-locking ring 15.
[0027] Working principle: When using this portable painting tool, first assemble the paint bottle 1 and brush box 4, align the bottle opening 2 with the interface 3, and rotate to close the half-locking ring 15 and half-locking ring 2 16, so that the hook 17 automatically engages with the slot 18, and the locking block 19 horizontally engages with the gap of the hook 17. At this time, the spring 3 21 provides continuous locking force and emits a prompt sound, realizing a stable connection between the paint bottle 1 and the brush box 4. To unlock, gently push the push button 20 to release the locking block 19 from the hook 17. When installing the roller brush 5, insert the connecting rod 6 into the connecting cover 9 on the brush box 4 until the limit block 7 abuts against the brush. The outer wall of box 4 and the inner wall of connecting cover 9 guide the radial movement of the locking rod 12. Under the action of spring 13, the locking rod 12 automatically springs into the hole groove 8 of connecting rod 6 to complete the locking. When disassembling the roller brush 5, press the button 11 on the connecting cover 9 with one finger to drive the inclined block 10 to slide in the connecting cover 9 and squeeze the locking rod 12 to retract radially and disengage from the hole groove 8. At the same time, spring 2 14 stores force, and the connecting cover 9 maintains the precise alignment of the inclined block 10 and the locking rod 12. After releasing the button 11, spring 2 14 pushes the inclined block 10 to reset, and spring 13 pushes out the locking rod 12 to prepare for the next locking. The paint flows into the brush box 4 through the bottle mouth 2 to wet the roller brush 5 and can then be used for painting.
[0028] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.
Claims
1. A convenient painting tool, comprising a paint bottle (1), characterized in that: The upper surface of the paint bottle (1) is fixedly connected to the bottle mouth (2), the inner wall of the bottle mouth (2) is provided with an interface (3), the outer wall of the interface (3) is provided with a connecting component, the upper surface of the interface (3) is fixedly connected to a brush box (4), the inside of the brush box (4) is provided with a roller brush (5), the inner wall of the brush box (4) is provided with a connecting rod (6), and one end of the connecting rod (6) is provided with a quick-release component; The quick-release assembly includes a slot (8) and a locking rod (12). The slot (8) is opened through one side of the inner wall of the connecting rod (6). A connecting cover (9) is fitted on one end of the connecting rod (6). The outer wall of the locking rod (12) is slidably connected to the inner wall of the connecting cover (9). An inclined block (10) is slidably connected to the inner wall of the connecting cover (9). A button (11) is fixedly connected to one end of the inclined block (10). The outer wall of the button (11) is slidably connected to the inner wall of the connecting cover (9).
2. The portable painting tool according to claim 1, characterized in that: The connecting assembly includes a first half-clamp (15) and a second half-clamp (16). One end of the first half-clamp (15) is rotatably connected to the outer wall of the interface (3), and one end of the second half-clamp (16) is rotatably connected to the outer wall of the interface (3). A hook (17) is fixedly connected to one side of the outer wall of the first half-clamp (15), and a slot (18) is provided on one side of the outer wall of the second half-clamp (16). A block (19) is provided inside the second half-clamp (16), and the hook (17) is provided inside the slot (18).
3. The portable painting tool according to claim 2, characterized in that: The slot (18) engages with the block (19), and a push button (20) is fixedly connected to the outer wall of the block (19).
4. A convenient painting tool according to claim 2, characterized in that: The second half-locking ring (16) is provided with a third spring (21) inside, and one end of the third spring (21) is fixedly connected to the upper surface of the locking block (19).
5. A convenient painting tool according to claim 1, characterized in that: One end of the connecting rod (6) is fixedly connected to a limiting block (7), which is located outside the brush box (4).
6. A convenient painting tool according to claim 1, characterized in that: The outer wall of the lever (12) is fitted with a spring (13), one end of which is fixedly connected to the inner wall of the connecting cover (9).
7. A portable painting tool according to claim 1, characterized in that: The connecting cover (9) is provided with a second spring (14), one end of which is fixedly connected to the outer wall of the inclined block (10).
8. A convenient painting tool according to claim 2, characterized in that: The first half-clamp ring (15) is fitted onto the outer wall of the bottle mouth (2), and the second half-clamp ring (16) is fitted onto the outer wall of the bottle mouth (2).