An adjustable paint brush

Abstract

This utility model discloses an adjustable paint brush, specifically relating to the field of paint brush technology. It includes a brush box composed of an upper box and a lower box. The brush box has a hollow paint chamber inside. A paint through-hole communicating with the interior of the paint chamber is opened at the bottom of the lower box. Paint bristles are installed at the bottom of the lower box. Paint from the paint chamber enters the paint bristles through the paint through-hole to complete the painting process. A paint adjusting component that moves back and forth is provided inside the paint chamber. An operating rod is installed on the outer wall of the lower box to move the paint adjusting component back and forth. The operating rod controls the flow rate of paint within the paint through-hole. This utility model allows for flexible control of paint flow rate through the operating rod, adapting to different painting needs. The feed pipe facilitates paint replenishment without disassembling the brush box. The overall structure is stable, and the components are detachable for easy cleaning and maintenance, making it highly practical.

Description

Technical Field

[0001] This utility model relates to the field of paint brush technology, and more specifically, to an adjustable paint brush. Background Technology

[0002] Traditional paint brushes have significant limitations in paint application: they are mostly single-brush structures, requiring frequent brushing, which is cumbersome and inefficient; the paint flow rate cannot be adjusted, easily leading to paint accumulation and drips on the brush surface due to excessive brushing, or missed areas due to insufficient brushing, affecting the painting quality; and the components are mostly fixed connections, making it difficult to thoroughly clean residual paint after use, which can easily breed bacteria or cause blockages, shortening the lifespan of the device and failing to meet the needs of efficient, flexible, and clean painting. Utility Model Content

[0003] To solve the above-mentioned technical problems, this utility model provides an adjustable paint brush, including a brush box composed of an upper box and a lower box. The brush box has a hollow paint chamber inside. The bottom of the lower box has a paint through hole communicating with the interior of the paint chamber. Paint bristles are installed at the bottom of the lower box. Paint in the paint chamber enters the paint bristles through the paint through hole to complete the paint application. The paint chamber is provided with a paint adjusting component that moves back and forth. An operating rod is installed on the outer wall of the lower box to drive the paint adjusting component to move back and forth. The operating rod drives the paint adjusting component to move and control the flow rate of paint in the paint through hole.

[0004] In a preferred embodiment, a feed pipe is provided at the top of the upper box, and a push rod connected to the top of the brush box via a universal joint is provided above the upper box.

[0005] In a preferred embodiment, the paint through hole is configured as an elongated strip, and the extending direction of the paint through hole is consistent with the moving direction of the paint adjusting member.

[0006] In a preferred embodiment, the upper and lower boxes are provided with an edge at the joint, and a number of fastening bolts pass through the edge. A sealing gasket is attached between the edges of the upper and lower boxes.

[0007] In a preferred embodiment, the paint adjusting component includes a plurality of adjusting plates that fit into the bottom of the lower box cavity, the adjusting plates being located directly above the paint through hole, an adjusting strip connecting the tops of the plurality of adjusting plates, an operating lever extending through the lower box cavity into the paint cavity, and a threaded tube cooperating with the operating lever being installed at the end of the adjusting strip.

[0008] The operating lever acts on the threaded pipe to push the adjusting bar, which in turn moves several adjusting plates above the paint through hole, changing the size of the paint through hole and controlling the paint flow rate.

[0009] In a preferred embodiment, the operating lever includes a mechanical seal embedded in the outer wall of the lower box and a plug rod inserted into the mechanical seal. A knob is installed at the end of the plug rod located on the outer side of the lower box, and the surface of the plug rod located on the inner side of the lower box has a thread for threaded tube engagement and is inserted into the threaded tube.

[0010] In a preferred embodiment, a limiting bar is provided on the side of the adjusting bar away from the threaded tube to limit the adjustment bar, and limiting clamps are provided on both sides of the limiting bar to limit and hold the limiting bar, and the limiting clamps are fixed on the inner wall of the lower box.

[0011] In a preferred embodiment, a pressing plate is installed on the bottom inner side of the upper box body and is pressed onto the adjusting strip. The bottom of the pressing plate is also attached to the top of the limiting strip, and the bottom of the limiting strip is attached to the top of the adjusting plate.

[0012] The technical effects and advantages of this utility model are as follows:

[0013] This utility model allows for flexible control of paint flow through an operating lever that drives an adjusting component, adapting to different painting needs. The feed pipe facilitates paint replenishment without disassembling the brush box, and the universal joint push rod allows for flexible adjustment of the grip angle, reducing operator fatigue. The sealing structure effectively prevents paint leakage, and the overall structure is stable with detachable components for easy cleaning and maintenance, making it highly practical. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0015] Figure 2 This is a schematic diagram of the inside of the brush box when the paint flow rate is low.

[0016] Figure 3 This is a schematic diagram of the inside of the brush box when the coating flow rate is high.

[0017] Figure 4 This is a partial disassembly diagram of the brush box and paint adjustment component of this utility model.

[0018] Explanation of reference numerals in the attached drawings: 1 Upper box, 2 Lower box, 3 Brush box, 4 Paint chamber, 5 Paint brush bristles, 6 Feed pipe, 7 Push rod, 8 Edge, 9 Fastening bolt, 10 Sealing gasket, 11 Adjusting plate, 12 Adjusting strip, 13 Threaded pipe, 14 Mechanical seal, 15 Insert rod, 16 Knob, 17 Limiting strip, 18 Limiting clamp, 19 Pressing plate, 20 Paint through hole, 21 Universal joint. Detailed Implementation

[0020] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments. The embodiments of the present invention are given for illustrative and descriptive purposes only, and are not intended to be exhaustive or to limit the present invention to the disclosed forms. Many modifications and variations will be apparent to those skilled in the art. The embodiments were chosen and described to better illustrate the principles and practical applications of the present invention, and to enable those skilled in the art to understand the present invention and design various embodiments with various modifications suitable for a particular purpose.

[0021] like Figure 1-4 An adjustable paint brush is shown, comprising a brush box 3 consisting of an upper box 1 and a lower box 2. The brush box 3 has a hollow paint chamber 4 inside. The bottom of the lower box 2 has a paint through hole 20 communicating with the inside of the paint chamber 4. Paint bristles 5 are installed at the bottom of the lower box 2. Paint in the paint chamber 4 enters the paint bristles 5 through the paint through hole 20 to complete the paint application. The paint chamber 4 is provided with a paint adjusting component that moves back and forth. An operating rod is installed on the outer wall of the lower box 2 to drive the paint adjusting component to move back and forth. The operating rod drives the paint adjusting component to move and control the flow rate of paint in the paint through hole 20.

[0022] Based on the above, the brush box 3 forms a closed paint chamber 4 by splicing the upper box body 1 and the lower box body 2, which is used to store paint. Under the action of gravity, the paint flows through the paint through hole 20 of the lower box body 2 to the paint bristles 5 at the bottom, and the brushing is completed by the brush bristles contacting the surface to be coated. The operating lever drives the paint adjusting component to move back and forth in the paint chamber 4, changing the area of ​​the paint adjusting component blocking the paint through hole 20, thereby controlling the rate at which the paint flows out of the through hole, realizing the adjustment of the amount of paint used during the painting process. The overall structure integrates paint storage and flow regulation functions, and the amount of paint can be controlled without additional tools. It is suitable for different painting needs, with a compact structure and strong practicality.

[0023] A feed pipe 6 is provided at the top of the upper box 1, and a push rod 7 is provided above the upper box 1 and connected to the top of the brush box 3 via a universal joint 21.

[0024] Based on the above, the feed pipe 6 is used to replenish paint to the paint chamber 4. When the paint in the chamber is insufficient, it can be directly added through the feed pipe 6, avoiding the need to disassemble the brush box 3. The push rod 7 is connected to the brush box 3 through the universal joint 21, so that the push rod 7 can rotate flexibly around the universal joint 21 to adapt to different grip angles, making it convenient for operators to adjust their posture according to the painting position.

[0025] The coating through hole 20 is configured as an elongated strip, and the extending direction of the coating through hole 20 is consistent with the moving direction of the coating adjusting component.

[0026] Based on the above, the elongated paint through-hole 20 can increase the lateral range of paint outflow, match the distribution of paint brush bristles 5, and ensure that the bristles are evenly dipped in paint. Since the extension direction of the through-hole is consistent with the moving direction of the adjusting component, the adjusting component can evenly change the blocking area along the length direction of the through-hole when it moves, so that the paint flow rate changes in each part of the through-hole is consistent, and avoids excessive or insufficient local flow rate.

[0027] Both the upper box 1 and the lower box 2 are provided with an edge 8 at the joint. Several fastening bolts 9 pass through the edge 8. A sealing gasket 10 is attached between the edge 8 of the upper box 1 and the lower box 2. The edge 8 provides a force-bearing surface for the connection between the upper and lower box 2. By passing the fastening bolts 9 through the edge 8 and tightening them, the upper and lower box 2 are tightly attached. The sealing gasket 10 is squeezed between the edge 8, filling the tiny gaps in the joint surface and preventing the paint in the paint chamber 4 from leaking from the box joint.

[0028] The paint regulating component includes several regulating plates 11 that fit into the bottom of the inner cavity of the lower box 2. The regulating plates 11 are located directly above the paint through hole 20. An regulating strip 12 is connected between the tops of the several regulating plates 11. An operating rod extends through the lower box 2 into the paint chamber 4. A threaded tube 13 that cooperates with the operating rod is installed at the end of the regulating strip 12. The operating rod acts on the threaded tube 13 to push the regulating strip 12 and drive the several regulating plates 11 to move above the paint through hole 20, thereby changing the size of the paint through hole 20 and controlling the paint flow rate.

[0029] Based on the above, the adjusting plate 11 fits against the bottom of the lower box 2 and is located directly above the paint through hole 20, which can directly block the through hole; the adjusting strip 12 connects multiple adjusting plates 11 into a whole to ensure their synchronous movement; the operating rod, through cooperation with the threaded tube 13, drives the adjusting strip 12 to move along the direction of the through hole, thereby changing the blocking area of ​​the adjusting plate 11 on the through hole. The larger the blocking area, the smaller the actual flow area of ​​the through hole, and the slower the paint flow rate; conversely, the smaller the blocking area, the faster the paint flow rate, thus accurately controlling the paint flow rate.

[0030] The operating lever includes a mechanical seal 14 embedded in the outer wall of the lower box 2 and a plug rod 15 inserted into the mechanical seal 14. A knob 16 is installed at the end of the plug rod 15 located on the outer side of the lower box 2. The surface of the plug rod 15 located on the inner side of the lower box 2 is threaded to fit a threaded tube 13 and is inserted into the threaded tube 13.

[0031] Based on the above, rotating the knob 16 causes the insert rod 15 to rotate. Since the thread on the surface of the insert rod 15 is engaged with the thread on the inner wall of the threaded tube 13, the rotational motion of the insert rod 15 is converted into the linear movement of the adjusting strip 12. When the insert rod 15 rotates clockwise, the threaded tube 13 causes the adjusting strip 12 to move closer to the insert rod 15; when it rotates counterclockwise, the adjusting strip 12 moves away from the insert rod 15. The mechanical seal 14 is fitted at the connection between the insert rod 15 and the lower box 2 to prevent the paint from leaking through the gap through the insert rod 15.

[0032] A limiting strip 17 is provided on the side of the adjusting strip 12 away from the threaded tube 13 to limit the adjustment strip 12. Limiting clamps 18 are provided on both sides of the limiting strip 17 to limit and hold the limiting strip 17. The limiting clamps 18 are fixed on the inner wall of the lower box 2. A pressing plate 19 is installed on the bottom inner side of the upper box 1 and is pressed onto the adjusting strip 12. The bottom of the pressing plate 19 is also attached to the top of the limiting strip 17. The bottom of the limiting strip 17 is attached to the top of the adjusting plate 11.

[0033] Based on the above, the limiting strip 17 is clamped by the limiting clamps 18 on both sides to achieve lateral stability limiting; its bottom is tightly attached to the top of the adjusting plate 11 to provide longitudinal support for the adjusting plate 11; and its top is pressed by the pressing plate 19 of the upper box 1 to form longitudinal constraint. Under the synergistic effect of "clamping-supporting-pressing", the limiting strip 17, the adjusting strip 12 and the adjusting plate 11 are kept in a balanced state to ensure the stability of the adjusting structure.

[0034] When the adjusting plate 11 and the adjusting strip 12 move along the paint through hole 20 under the action of the operating lever, the limiting strip 17 is located on one side of the moving direction. When the adjusting strip 12 and the adjusting plate 11 move to the farthest distance from the insertion rod 15, the limiting strip 17 will abut against the end of the adjusting strip 12, and limit its maximum moving distance by physically blocking it, so as to prevent the adjusting strip 12 from moving too much and causing the threaded tube 13 to disengage from the insertion rod 15 of the operating lever, thus ensuring the linkage reliability of the adjusting structure.

[0035] When it is necessary to clean the brush box 3 and its internal structure, loosen the fastening bolts 9 of the upper box 1 and the lower box 2, separate the upper box 1 and the lower box 2, remove the pressing plate 19 with the upper box 1, and release the top pressing of the limiting strip 17; at this time, the limiting strip 17 can be taken out from between the two limiting clamps 18, and then the adjusting strip 12 and the adjusting plate 11 can be taken out from the paint chamber 4 as a whole, so as to achieve a thorough cleaning of the brush box 3, the adjusting parts and other components.

[0036] Obviously, the described embodiments are only a part of the embodiments of this utility model, and not all of them. All other embodiments obtained by those skilled in the art and related fields based on the embodiments of this utility model without creative effort should fall within the protection scope of this utility model. Structures, devices, and operating methods not specifically described and explained in this utility model, unless otherwise specified or limited, shall be implemented according to conventional means in the art.

Claims

1. An adjustable paint brush characterized by, The brush box comprises an upper box and a lower box. The brush box has a hollow paint chamber inside. A paint through-hole communicating with the interior of the paint chamber is located at the bottom of the lower box. Paint bristles are installed at the bottom of the lower box. Paint from the paint chamber enters the paint bristles through the paint through-hole to complete the application. A paint adjusting element that moves back and forth is located inside the paint chamber. An operating lever is installed on the outer wall of the lower box to move the paint adjusting element back and forth. The operating lever controls the flow rate of paint within the paint through-hole.

2. An adjustable paint brush according to claim 1, wherein: A feed pipe is provided at the top of the upper box, and a push rod is provided above the upper box and connected to the top of the brush box via a universal joint.

3. An adjustable paint brush according to claim 1, characterized in that: The coating through hole is designed to be elongated, and the extension direction of the coating through hole is consistent with the moving direction of the coating adjustment component.

4. An adjustable paint brush according to claim 1, wherein: The upper and lower boxes are fitted together with an edge, through which several fastening bolts pass. A sealing gasket is fitted between the edges of the upper and lower boxes.

5. An adjustable paint brush according to claim 3, wherein: The paint adjusting component includes several adjusting plates that fit into the bottom of the lower box cavity. The adjusting plates are located directly above the paint through hole. An adjusting strip is connected between the tops of the several adjusting plates. An operating lever extends through the lower box into the paint cavity. A threaded tube that mates with the operating lever is installed at the end of the adjusting strip. The operating lever acts on the threaded pipe to push the adjusting bar, which in turn moves several adjusting plates above the paint through hole, changing the size of the paint through hole and controlling the paint flow rate.

6. An adjustable paint brush according to claim 5, wherein: The operating lever includes a mechanical seal embedded in the outer wall of the lower box and a plug rod inserted into the mechanical seal. A knob is installed at the end of the plug rod located on the outer side of the lower box, and the surface of the plug rod located on the inner side of the lower box has a thread for threaded tube fitting and is inserted into the threaded tube.

7. An adjustable paint brush according to claim 5, wherein: A limiting bar is provided on the side of the adjusting bar away from the threaded tube to limit the adjustment bar. Limiting clamps are provided on both sides of the limiting bar to limit and hold the limiting bar. The limiting clamps are fixed on the inner wall of the lower box.

8. An adjustable paint brush according to claim 7, wherein: The bottom of the upper box is fitted with a pressing plate that is pressed onto the adjusting strip. The bottom of the pressing plate is also attached to the top of the limiting strip, and the bottom of the limiting strip is attached to the top of the adjusting plate.

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