A self-jointed sprayable brush

Abstract

This invention provides a brush with a built-in universal joint and capable of spraying liquid. The brush head has a mounting base fixed to its end; the universal joint assembly is connected to the mounting base; a liquid storage chamber is formed inside the spray can for storing a liquid medium; the bottom of the spray can is detachably connected to the universal joint assembly; and the opening of the spray can is equipped with a spraying device for spraying the liquid medium from the storage chamber. This invention, by connecting the brush head and the spray can through the universal joint assembly, achieves arbitrary angle adjustment and locking of the brush head relative to the spray can, solving the technical problem of the non-adjustable brush head angle in traditional brushes. Furthermore, by setting up a spray can with a liquid storage chamber and a spraying device, the brush itself possesses the function of carrying and atomizing liquid media, solving the technical problem of traditional brushes not being able to carry solvents. This invention effectively solves the technical problems of the non-adjustable brush head angle and the inability to carry liquid media in traditional brushes, and has the advantages of simple structure, convenient operation, and wide applicability.

Description

Technical Field

[0001] This invention relates to the field of cleaning brush technology, and in particular to a brush with a built-in universal joint and capable of spraying. Background Technology

[0002] As a common cleaning tool, brushes are widely used in industrial production and daily life. In factory environments, brushes are often used to clean dust, metal shavings, and debris from equipment surfaces and crevices; in automotive repair, brushes are used with solvents to remove oil and rust from parts; and in households, brushes are used to clean hard-to-reach corners and crevices. The bristles of brushes are typically soft and will not damage the surface of workpieces, thus their applications are very wide-ranging.

[0003] Traditional brushes mainly consist of a brush head and a handle, which are usually integrally molded or fixedly connected, and cannot rotate relative to each other. This fixed structure has significant limitations in practical use: when cleaning or painting surfaces in confined spaces, the operator often has to adjust their arm position to adapt to the working angle because the relative angle between the brush head and handle cannot be adjusted. This is not only inconvenient and strenuous, but also ineffective in certain confined spaces, leading to poor cleaning results or failure to complete the task. Furthermore, when performing solvent-assisted cleaning operations, traditional brushes lack liquid carrying and spraying capabilities. The operator must prepare a separate solvent bottle or sprayer, operating the brush with one hand and the sprayer with the other. This cumbersome operation makes it difficult to accurately control the spray location and amount, easily resulting in solvent waste and contamination of areas that do not need cleaning.

[0004] Existing technologies have already made some attempts to improve upon the above-mentioned problems. For example, the announcement date is 2025-06-10, and the announcement number is... The Chinese patent CN222957118U describes a product that uses a flexible tube / cable structure to connect the brush head to achieve omnidirectional functionality. However, this results in a product that is too long and not portable, and its ability to maintain direction is limited by the materials used.

[0005] For example, the Chinese patent CN215687572U, published on February 1, 2022, describes a product that uses a brush head to connect a cleaning tube and a nozzle for spraying. However, this structure makes the brush head area larger, which is not convenient for use in certain confined spaces.

[0006] In summary, a brush with a simple structure and convenient operation is proposed, which can simultaneously achieve arbitrary adjustment of the brush head angle and carry its own liquid spray function. Summary of the Invention

[0007] The purpose of this invention is to provide a brush with a built-in universal joint and a spray function, which can adjust and lock the brush head at any angle relative to the handle to adapt to different space operation needs, and integrates a spray function to atomize and spray liquid media as needed, thereby improving the convenience and efficiency of cleaning operations. This invention provides a brush with a built-in universal joint and capable of spraying, comprising: a brush head with a mounting base fixed at its end; a universal joint assembly connected to the mounting base; and a spray can with a liquid storage chamber formed inside the spray can for storing a liquid medium, the bottom of the spray can being detachably connected to the universal joint assembly, and the spray can having a spraying device at the can opening for spraying the liquid medium in the liquid storage chamber.

[0008] Furthermore, the universal joint assembly includes a universal ball, and the mounting base has a ball socket in which the universal ball is accommodated; a ball rod is connected to the universal ball, and the bottom of the spray can has a fixing hole for inserting the ball rod.

[0009] Furthermore, the ball is threadedly connected to the fixing hole.

[0010] Furthermore, a fastener is externally connected to the mounting base, the fastener being used to releasably lock the omnidirectional ball into the ball socket.

[0011] Furthermore, the fastener is a fastening nut, and a locking hole is formed on one end of the fastening nut adjacent to the mounting base. The inner wall of the locking hole is provided with internal threads to cooperate with the external threads on the outside of the mounting base.

[0012] Furthermore, the fastening nut has a guide hole at one end away from the mounting base for the ball joint rod to pass through. The diameter of the guide hole is larger than the diameter of the ball joint rod and smaller than the diameter of the universal ball.

[0013] Furthermore, the fastening nut is configured such that: when the fastening nut is loosened, the universal ball and the socket are released, allowing the universal ball to rotate at an angle; when the fastening nut is tightened, the universal ball and the socket are locked together, fixing the angle of the universal ball.

[0014] Furthermore, the spraying device includes a spray rod and a nozzle. The spray rod is connected to the spray tank, and the nozzle is located on the spray rod. By pressing the spray rod, the liquid medium in the storage chamber is sprayed out from the nozzle.

[0015] Furthermore, the spray can is equipped with a removable spray cap at its opening, which is used to cover the spray device.

[0016] Furthermore, the mounting base, ball joint, and fasteners are all made of plastic.

[0017] The technical solution of this invention achieves arbitrary angle adjustment and locking of the brush head relative to the spray can by connecting the brush head and the spray can through a universal joint assembly, solving the technical problem of the non-adjustable brush head angle in traditional brushes. Furthermore, by incorporating a spray can with a liquid storage chamber and a spraying device, the brush itself possesses the function of carrying and atomizing liquid media, solving the technical problem of traditional brushes being unable to carry solvents. This invention effectively solves the technical problems of the non-adjustable brush head angle and the inability to carry liquid media in traditional brushes, and has the advantages of simple structure, convenient operation, and wide applicability. Attached Figure Description

[0018] To more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0019] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic diagram of the universal joint assembly for adjusting the brush head angle according to the present invention; Figure 3 This is an exploded view of the present invention; Figure 4 This is a top view of the fastener of the present invention; Explanation of reference numerals in the attached figures: 1-Brush head; 2-Mounting base; 21-Ball socket; 22-External thread; 3-Universal joint assembly; 31-Universal ball; 311-Ball rod; 312-External thread; 32-Fastener; 321-Guide hole; 322-Locking hole; 4-Spray can; 41-Spray device; 411-Spray bar; 412-Nozzle; 42-Fixing hole; 421-Internal thread; 43-Spray cap. Detailed Implementation

[0020] The technical solution of the present invention will be clearly and completely described below with reference to the embodiments. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0021] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," and "counterclockwise," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limiting this invention.

[0022] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the stated features. In the description of this invention, "a plurality of" means two or more, unless otherwise explicitly specified. Furthermore, the terms "installed," "connected," and "linked" should be interpreted broadly; for example, they may refer to a fixed connection, a detachable connection, or an integral connection; they may refer to a mechanical connection or an electrical connection; they may refer to a direct connection or an indirect connection through an intermediate medium; and they may refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0023] Example 1 like Figures 1-4 As shown, the present invention provides a brush with a built-in universal joint and capable of spraying, comprising: a brush head 1, the end of which is fixed with a mounting base 2; a universal joint assembly 3 connected to the mounting base 2; a spray can 4, the spray can 4 having a liquid storage chamber formed inside for storing liquid medium, the bottom of the spray can 4 being detachably connected to the universal joint assembly 3, and the opening of the spray can 4 being provided with a spraying device 41 for spraying out the liquid medium in the liquid storage chamber.

[0024] Specifically, the universal joint is a connector that can be connected at varying angles. This invention can use a universal joint already existing in the prior art, or it can use the universal joint assembly 3 described in Embodiments 2 and 3. The mounting base 2 is fixedly connected to the upper center position of the brush head 1.

[0025] The spray can 4 serves as a handle and also stores liquid media. The can body of the spray can 4 is preferably made of transparent or semi-transparent plastic material for easy observation of the remaining liquid level. The spray can 4 can hold various dilute solvents, such as alcohol, cleaning agents, and bolt loosening agents. Because the spray can 4 is for spraying, it cannot hold solvents with high viscosity, such as bearing oil. The spray device 41 has an internal pumping mechanism. By pressing the spray rod 411, the liquid media in the storage chamber can be sprayed out in a mist form through the nozzle 412. Furthermore, the spray rod 411 is detachably connected to the spray can 4 via its external thread and the internal thread at the can opening. This allows the spray device 41 (spray rod 411) to be unscrewed and removed when the solvent in the spray can 4 is used up, so that the spray can 4 can be refilled with solvent and then tightened again, enabling the spray can 4 to be reused and saving on operating costs.

[0026] Of course, there are other structures related to the spray device 41, such as a pump chamber (the pump chamber extends to the bottom of the liquid storage chamber through a suction tube), a piston and spring (the piston is reciprocally slidably installed in the pump chamber, and the spring is sleeved on the outside of the piston rod. When the spray rod is released, the spring's rebound force pushes the piston upward to reset), a check valve (linked with the piston rod or valve rod at the liquid outlet of the pump chamber, controlling the opening and closing of the liquid outlet channel by the up and down movement of the piston rod), a sealing ring, and an atomizing structure inside the nozzle, etc. For details, please refer to the structure of alcohol spray bottles or perfume spray bottles in the prior art, which will not be elaborated further.

[0027] This invention achieves arbitrary angle adjustment and locking of the brush head 1 relative to the spray can 4 by connecting the brush head 1 and the spray can 4 through a universal joint assembly 3, thus solving the technical problem that the angle of the brush head 1 of traditional brushes cannot be adjusted; and by setting the spray can 4 with a liquid storage chamber and a spraying device 41, the brush itself has the function of carrying and atomizing the liquid medium, thus solving the technical problem that traditional brushes cannot carry solvents themselves.

[0028] Example 2 Universal joint assembly 3 includes a universal ball 31, and a ball socket 21 is provided on the mounting base 2, in which the universal ball 31 is accommodated; a ball rod 311 is connected to the universal ball 31, and a fixing hole 42 for inserting the ball rod 311 is provided on the bottom of the spray can 4. The ball rod 311 is threadedly connected to the fixing hole 42.

[0029] Specifically, this invention removes the handle of a regular brush and processes the mounting base 2 of the brush head 1 with external threads 22. The mounting base 2 is made of plastic. A hemispherical ball socket 21 is machined on the top of the mounting base 2 (the end away from the bristles). A universal ball 31 is then machined from plastic. The universal ball 31 has a spherical structure and a ball rod 311 with external threads 312 on it. The ball rod 311 and the universal ball 31 are an integral structure. The inner diameter of the ball socket 21 is slightly larger than the diameter of the universal ball 31, so that about half of the universal ball 31 protrudes from the ball socket 21 after it is inserted, allowing the universal ball 31 to rotate flexibly. The threaded connection ensures a secure and reliable connection between the spray can 4 and the universal joint assembly 3, while also facilitating disassembly and replacement. When the spraying function is not needed or when different liquid media need to be replaced, the spray can 4 can be easily unscrewed for independent use.

[0030] The bottom center of the spray can 4 has a fixing hole 42 (not connected to the liquid storage chamber inside the can), and the fixing hole 42 has an internal thread 421 for screwing into the external thread 312 at the end of the ball rod 311.

[0031] Example 3 A fastener 32 is externally connected to the mounting base 2. The fastener 32 is used to releasably lock the universal ball 31 into the ball socket 21. The fastener 32 is a fastening nut. One end of the fastening nut adjacent to the mounting base 2 forms a locking hole 322. The inner wall of the locking hole 322 has an internal thread 421 for engaging with the external thread 22 on the outer side of the mounting base 2. The end of the fastening nut away from the mounting base 2 has a guide hole 321 through which the ball rod 311 of the universal ball 31 passes. The diameter of the guide hole 321 is larger than the diameter of the ball rod 311 but smaller than the diameter of the universal ball 31. The fastening nut is configured such that: when the fastening nut is loosened, the universal ball 31 is released from the ball socket 21, allowing the universal ball 31 to rotate; when the fastening nut is tightened, the universal ball 31 is locked from the ball socket 21, fixing the universal ball 31 at a fixed angle.

[0032] Specifically, the fastening nut is also made of plastic. The fastening nut is similar to an ordinary nut, except that the inner hole (locking hole 322) of the fastening nut is not continuous from top to bottom. A guide hole 321 with a smaller inner diameter is opened at the upper part of the fastening nut. When the universal ball 31 is inserted into the ball socket 21, the internal thread 421 of the fastening nut is connected and tightened with the external thread 22 on the mounting base 2. The ball rod 311 passes out from the guide hole 321 above the fastening nut. The diameter of the guide hole 321 is larger than the diameter of the ball rod 311, but smaller than the diameter of the universal ball 31. In this way, when the fastening nut is tightened with the external thread 22 on the mounting base 2, the edge of the guide hole 321 of the fastening nut presses the universal ball 31 into the ball socket 21, thereby achieving the angle locking of the universal ball 31. In this way, the mounting base 2, the universal ball 31, and the fastening nut together form a universal joint, allowing the ball handle 311 of the universal ball 31 to be fixed at any angle within the fastening nut. When the fastening nut is loosened, the universal ball 31 can rotate freely within the ball socket 21, and the brush head 1 can be adjusted at any angle; when adjusted to the correct position, tightening the nut will press and fix the universal ball 31 through the interference fit between the nut guide hole 321 and the universal ball 31, locking the brush head 1 at the current angle.

[0033] The spray can 4 is installed above the fastening nut. There is a fixing hole 42 at the bottom of the spray can 4. The fixing hole 42 has an internal thread 421. This internal thread 421 is fastened together with the external thread 312 of the ball rod 311 that passes through the fastening nut.

[0034] Example 4 The spraying device 41 includes a spray rod 411 and a nozzle 412. The spray rod 411 is connected to the spray can 4, and the nozzle 412 is provided on the spray rod 411. By pressing the spray rod 411, the liquid medium in the storage chamber is sprayed out from the nozzle 412. The spray can 4 is also provided with a removable spray cap 43 at the mouth of the can, which is used to cover the spraying device 41.

[0035] Specifically, the top of the spray can 4 has a nozzle 412 and a spray rod 411. During use, each press of the spray rod 411 releases a mist of solvent from the nozzle 412. Simply aim the nozzle 412 at the desired area. After spraying, place the spray cap 43 over the spray rod 411. The cap 43 is locked to the can body with a latch and will not fall off, preventing accidental contact with the spray rod 411 when using the brush. Then, it can be used as a normal brush.

[0036] Example 5 Mounting base 2, ball joint 31, and fastener 32 are all made of plastic. Plastic has advantages such as light weight, corrosion resistance, good processing performance, and low cost, making it particularly suitable for the manufacture of cleaning tools.

[0037] Method of using this invention: Using spray can 4: To spray some solvent, remove the spray cap 43 from spray can 4, press the spray lever 411, and the solvent will be sprayed out in the form of a mist from nozzle 412. Spray only the amount needed, which is very convenient. For example, spray bolt loosening agent, alcohol, etc. After spraying, put the spray cap 43 back in place, and it becomes a normal brush that can be used normally.

[0038] Universal joint usage: Under normal use, the spray can 4 and brush head 1 are installed vertically. If you want to change the angle of brush head 1, you can loosen the fastening nut slightly. Gently adjust the brush head 1 or spray can 4 so that the ball joint 311 changes direction within the guide hole 321 of the fastening nut to find a suitable angle. Then tighten the fastening nut. Because the universal joint can be adjusted 360 degrees, the angle of brush head 1 can be fixed at any angle. In this way, if the brush needs to be used in some confined spaces, or if the brush head 1 needs to be used at a different angle, this can be achieved by adjusting the universal joint. If a shorter brush handle is required for use, the spray can 4 can be removed, and only the brush head 1 needs to be used for cleaning.

[0039] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A brush with a built-in universal joint and capable of spraying, characterized in that, include: The brush head (1) has a mounting base (2) fixed at its end. Universal joint assembly (3) is connected to the mounting base (2); The spray can (4) has a liquid storage chamber inside for storing liquid media. The bottom of the spray can (4) is detachably connected to the universal joint assembly (3). The spray can (4) has a spray device (41) at the opening for spraying out the liquid media in the liquid storage chamber.

2. The brush with a built-in universal joint and capable of spraying according to claim 1, characterized in that, The universal joint assembly (3) includes a universal ball (31), and a ball socket (21) is provided on the mounting base (2), and the universal ball (31) is accommodated in the ball socket (21); The omnidirectional ball (31) is connected to a ball rod (311), and the bottom of the spray can (4) is provided with a fixing hole (42) for inserting the ball rod (311).

3. The brush with a built-in universal joint and capable of spraying according to claim 2, characterized in that, The ball rod (311) is threadedly connected to the fixing hole (42).

4. The brush with a built-in universal joint and capable of spraying according to claim 2, characterized in that, The mounting base (2) is externally connected to a fastener (32), which is used to releasably lock the universal ball (31) into the ball socket (21).

5. The brush with a built-in universal joint and capable of spraying according to claim 4, characterized in that, The fastener (32) is a fastening nut, and a locking hole (322) is formed on one end of the fastening nut adjacent to the mounting base (2). The inner wall of the locking hole (322) is provided with an internal thread to cooperate with the external thread (22) on the outside of the mounting base (2).

6. The brush with a built-in universal joint and capable of spraying according to claim 5, characterized in that, The fastening nut has a guide hole (321) at one end away from the mounting base (2) for the ball rod (311) of the universal ball (31) to pass through. The diameter of the guide hole (321) is larger than the diameter of the ball rod (311) and smaller than the diameter of the universal ball (31).

7. The brush with a built-in universal joint and capable of spraying according to claim 5, characterized in that, The fastening nut is configured such that when the fastening nut is loosened, the universal ball (31) is released from the socket (21), allowing the universal ball (31) to rotate at an angle; When the fastening nut is tightened, the universal ball (31) is locked to the ball socket (21), thereby fixing the angle of the universal ball (31).

8. The brush with a built-in universal joint and capable of spraying according to claim 1, characterized in that, The spray device (41) includes a spray rod (411) and a nozzle (412). The spray rod (411) is connected to the spray tank (4). The nozzle (412) is opened on the spray rod (411). By pressing the spray rod (411), the liquid medium in the liquid storage chamber is sprayed out from the nozzle (412).

9. The brush with a built-in universal joint and capable of spraying according to claim 8, characterized in that, The spray can (4) is also provided with a detachable spray cap (43) at the mouth of the can, which is used to cover the spray device (41).

10. The brush with a built-in universal joint and capable of spraying according to any one of claims 4-9, characterized in that, The mounting base (2), the universal ball (31), and the fastener (32) are all made of plastic.

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