A stylable soft shaft electric cleaning brush and control method

Abstract

The application discloses a typeable soft shaft electric cleaning brush and a control method, relates to the technical field of cleaning tools, and the cleaning brush comprises a handle, a typeable soft shaft waterproof sealing structure and a quick-change brush head; the handle is internally provided with a lithium battery, a driving motor and a control module, and an outer wall is provided with a button switch; the typeable soft shaft is internally provided with a steel wire transmission soft shaft, is matched with a double-layer waterproof sleeve and a front end sealing head, and can be arbitrarily bent and shaped; the conversion head and the brush head are respectively locked and transmitted through a jacking screw, and each component is modularized and can be disassembled; the control method comprises the steps of matching and assembling the brush head, bending and shaping the soft shaft, single-key starting and stopping and speed adjusting and washing, and long-pressing stopping, disassembling, washing and maintaining. The application can be extended into a special-shaped small cavity for dry and wet cleaning, the whole machine is waterproof, convenient to disassemble and assemble, and can effectively adapt to multiple complex cleaning scenes.

Description

Technical Field

[0001] This application relates to the field of cleaning tool technology, and in particular to a shapeable flexible shaft electric cleaning brush and its control method. Background Technology

[0002] The shape-adjustable flexible shaft electric cleaning brush is a waterproof, bendable, and shape-adjustable electric rotary cleaning tool. It is mainly used for cleaning narrow, curved, and hard-to-reach corners in laboratory equipment, kitchen and bathroom appliances, aquariums, small industrial applications, and home appliances, and is used to remove dirt from the inner walls of complex structures.

[0003] Chinese patent CN221997207U discloses an electric cleaning brush, which mainly includes a motor with an output shaft; an inner brush head driven to rotate by the output shaft of the motor; an outer brush head sleeved on the outer periphery of the inner brush head; a transmission assembly driven to the output shaft of the motor; and an outer wheel fixing frame driven to the transmission assembly and fixedly connected to the outer brush head. The transmission assembly drives the outer wheel fixing frame to rotate, and the outer wheel fixing frame drives the outer brush head to rotate. The inner brush head and the outer brush head rotate in opposite directions.

[0004] The technology lacks a waterproof structure, has limited operating scenarios, low degree of adjustment, is complex to operate, and cannot effectively scrub for different cleaning scenarios. Summary of the Invention

[0005] This application provides a shapeable flexible shaft electric cleaning brush and control method, which can be freely bent and shaped to extend into complex and narrow spaces to complete rotary brushing. It has the advantages of being fully waterproof, modular disassembly and assembly, multi-speed adjustment, and adaptability to dry and wet cleaning in various scenarios.

[0006] On the one hand, this application provides a shapeable flexible shaft electric cleaning brush, which adopts the following technical solution: A shapeable flexible shaft electric cleaning brush includes a handle, a shapeable flexible shaft, and a quick-change brush head. The handle integrates a rechargeable battery, a drive motor, and a control module, and a push-button switch is mounted on the outer wall of the handle. The shapeable flexible shaft is fixed to the front end of the handle, and a conversion head is fixed to one end of the shaft near the handle. The conversion head is driven by the output shaft of the drive motor. A rear-end locking screw passes through the side wall of the conversion head, and the end of the rear-end locking screw abuts against the output shaft of the drive motor to lock it in place. A steel wire drive flexible shaft passes through the inside of the shapeable flexible shaft. One end of the steel wire drive flexible shaft is connected to the inside of the conversion head, and the other end is detachably assembled with the quick-change brush head. The shapeable flexible shaft can be bent in any direction and maintain its shape. The waterproof sealing structure includes an outer rubber-coated metal shaped hose and an inner polytetrafluoroethylene (PTFE) sleeve. The outer rubber-coated metal shaped hose is integrally covered with a waterproof and wear-resistant rubber coating, and the inner PTFE sleeve is wrapped around the outer periphery of the steel wire drive flexible shaft.

[0007] By adopting the above technical solution, the outer rubber-coated metal-shaped flexible hose can be bent arbitrarily and maintain the bending angle, adapting to various curved pipes and irregularly shaped dead corner cavities; the inner PTFE sleeve isolates the steel wire drive flexible shaft from the outer flexible hose, reducing friction loss and blocking moisture; the overall double-layer sealing structure makes the flexible shaft section waterproof, and with the modular quick-change brush head, the brush head can be replaced according to the cleaning object; the rear side tightening screw locks the conversion head and motor output shaft, ensuring stable transmission without slippage, and the control module, together with the button switch, realizes multi-speed adjustment, taking into account the needs of dry and wet cleaning, as well as deep and shallow dead corner cleaning.

[0008] Optionally, the rechargeable battery is a low-voltage rechargeable lithium battery with a Type-C interface, providing safe low-voltage power to the drive motor and control module. By adopting the above technical solution, there is no risk of electric shock during immersion of the low-voltage lithium battery, and the Type-C universal charging interface makes charging convenient and compatible with common charging devices such as mobile phones and power banks.

[0009] Optionally, the push-button switch is electrically connected to the control module, which receives the push-button switch signal and controls the start / stop of the drive motor and the multi-speed adjustment. By adopting the above technical solution, the machine can be turned on and off and the speed cycle can be achieved with a single button. The operation of the whole machine is simple, eliminating the need for a multi-button layout. The handle structure is more compact and the grip is better.

[0010] Optionally, the quick-change brush head is sleeved on the front end of the wire-driven flexible shaft, and a side-tightening screw is provided through the side wall of the brush head. The front-end side-tightening screw radially abuts against the outer wall of the wire-driven flexible shaft for locking and fixing the quick-change brush head with the shapeable flexible shaft and the wire-driven flexible shaft.

[0011] By adopting the above technical solution, the brush head can be quickly disassembled and assembled simply by loosening and tightening the front side tightening screw, without the need for special tools. Different sizes and materials of brush heads can be quickly switched to adapt to the cleaning of different materials of utensils.

[0012] Optionally, the shapeable flexible shaft, the wire-driven flexible shaft, and the quick-change brush head are independent modular components that can be disassembled and replaced as a whole from the front of the handle. By adopting the above technical solution, when any component of the flexible shaft, the transmission wire, or the brush head is worn or damaged, it can be disassembled and replaced individually without replacing the entire device, thus reducing usage and maintenance costs; after the components are disassembled, they can be rinsed separately, leaving no dirt residue and resulting in a more thorough cleaning.

[0013] Optionally, a bearing is provided between the adapter head and the drive motor housing. By adopting the above technical solution, the bearing reduces the rotational friction resistance of the adapter head, resulting in less motor transmission loss, lower operating noise, and less heat generation during long-term operation.

[0014] Optionally, the waterproof sealing structure further includes a sealing head, which is disposed between the quick-change brush head and the shapeable flexible shaft; the sealing head has a through hole at its center that matches the wire-driven flexible shaft, the inner hole of the sealing head has an internal thread, and the outer wall of the front end of the outer rubber-coated metal shapeable flexible hose has a matching external thread. The sealing head and the outer rubber-coated metal shapeable flexible hose are connected by tightening the internal and external threads, which serves to: press and fit the end face of the hose to form a front end waterproof seal.

[0015] By adopting the above technical solution, the sealing head thread is pressed tightly against the end face of the flexible hose, sealing the gap at the front end of the flexible shaft, preventing water from seeping into the interior of the flexible shaft and the electrical components inside the handle from the brush head connection, thus achieving complete immersion and waterproofing of the whole machine, meeting the cleaning scenarios of fish tanks, sinks, and utensils.

[0016] On the other hand, this application provides a control method for a shapeable flexible shaft electric cleaning brush, which adopts the following technical solution: A control method for a shapeable flexible shaft electric cleaning brush, based on any one of the above-described shapeable flexible shaft electric cleaning brushes, includes the following steps: S1. Match the corresponding quick-change brush head according to the material of the object to be cleaned and the shape of the cavity; insert the front end of the steel wire drive flexible shaft into the brush head bushing hole, tighten the front side tightening screw to lock the drive flexible shaft and complete the brush head locking; screw the sealing head onto the external thread of the front end of the outer rubber-coated metal shaping flexible tube; manually bend the shaping flexible shaft to the bending angle that matches the cleaning cavity, and the flexible shaft will automatically shape and maintain the bent shape; S2. Press the handle button switch to receive the power-on signal and start the drive motor; short press the button switch to cycle through the low, medium and high speed levels. S3. Insert the shaped flexible shaft into the target area and use the locked rotating brush head to continuously scrub the inner wall and dead corner dirt. When operating underwater, the whole machine is completely immersed in water. The sealing head and the whole machine's waterproof sealing structure work together to isolate the water body and prevent water from entering the electrical compartment and the interior of the flexible shaft. S4. After cleaning, press and hold the button switch to cut off the power to the drive motor and stop the machine. Loosen the front side tightening screws and unscrew the front sealing head in sequence, and remove the quick-change brush head for rinsing. If the flexible shaft, conversion head, and transmission steel wire are worn, loosen the rear side tightening screws and remove the conversion head and the shapeable flexible shaft module as a whole for separate cleaning and replacement.

[0017] In summary, this application contains at least one of the following beneficial effects: 1. The shape-adjustable metal flexible hose can be bent at will and maintain its shape, and can be inserted into curved pipes, irregular corners, and deep narrow cavities, solving the pain point that traditional straight-handled cleaning brushes cannot handle dirt in bent structures, making it applicable to a wider range of scenarios; 2. The double-layer flexible shaft waterproof structure, combined with the front threaded sealing head, enables the whole machine to be fully submerged and waterproof. It can be used for both dry and wet applications and is suitable for underwater cleaning conditions such as laboratory water-immersed vessels, fish tanks, and kitchen and bathroom water pipes. 3. Fully modular design, the brush head, flexible shaft and transmission steel wire can be independently disassembled and quickly replaced, the replacement cost of parts is low, there are no dead corners after disassembly, and rinsing and maintenance are convenient; Type-C low voltage lithium battery power supply, safe and no risk of electric shock, single button multi-speed adjustment, the scrubbing intensity can be adjusted according to the degree of dirt and the material of the utensils, avoiding scratching the workpiece and reducing energy waste. 4. Low transmission loss and quiet operation. The front and rear double tightening screws lock the motor end and the brush head end respectively, preventing slippage during transmission and making it less prone to loosening during long-term vibration use. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall structure of a shapeable flexible shaft electric cleaning brush according to an embodiment of this application; Figure 2 This is a partial schematic diagram of the connection structure between the internal drive motor and the adapter head in an embodiment of this application; Figure 3 This is a partial cross-sectional schematic diagram of a formable flexible shaft according to an embodiment of this application; Figure 4 This is a schematic diagram of the exploded structure of the handle in an embodiment of this application; Figure 5 This is a partial schematic diagram of the quick-change brush head structure according to an embodiment of this application.

[0019] Explanation of reference numerals in the attached diagram: 1. Handle; 11. Rechargeable battery; 12. Drive motor; 13. Control module; 14. Push-button switch; 2. Shapeable flexible shaft; 21. Outer rubber-coated metal shaping flexible tube; 22. Inner PTFE sleeve; 23. Sealing head; 3. Quick-change brush head; 31. Front side tightening screw; 4. Adaptor head; 41. Rear side tightening screw; 42. Bearing; 5. Steel wire drive flexible shaft.

[0020] The specific implementation methods are described below in conjunction with the appendix. Figure 1-5 The embodiments of this application will be described in further detail. Example

[0021] This application discloses a shapeable flexible shaft electric cleaning brush for cleaning dry and wet dirt in narrow, hard-to-reach areas such as laboratory utensils, kitchen and bathroom pipes, fish tanks, and household appliances.

[0022] Reference Figure 1 The machine is divided into three independent modules: handle 1, shapeable flexible shaft 2, and quick-change brush head 3. These three sections are assembled in sequence to form a complete cleaning tool.

[0023] The handle 1 serves as the main grip, with a rechargeable battery 11, drive motor 12, and control module 13 fixedly installed in its internal cavity. A mounting slot is formed in the middle of the outer wall of the handle 1 to securely mount a push-button switch 14. The rechargeable battery 11 is a low-voltage 3.7V rechargeable lithium battery with a pre-installed Type-C charging port on the side, providing a continuous and safe low-voltage power supply to the drive motor 12 and control module 13, eliminating the risk of electric shock during immersion. The push-button switch 14 is electrically connected to the control module 13 via wires. The control module 13 has a built-in speed control program that can recognize short and long press operation signals to achieve gear switching and machine shutdown, respectively.

[0024] Reference Figure 2 A converter head 4 is installed at the front opening of the handle 1. The converter head 4 is sleeved on the outside of the output shaft of the drive motor 12. A threaded hole is opened radially on the side wall of the converter head 4. A rear end side tightening screw 41 is installed in the threaded hole. After tightening the rear end side tightening screw 41, the end of the screw presses against the outer wall of the motor output shaft, realizing the rigid locking between the converter head 4 and the motor output shaft, and the transmission has no relative slippage. A bearing 42 is embedded between the converter head 4 and the housing of the drive motor 12. The bearing 42 supports the rotation of the converter head 4, reducing friction noise and power loss.

[0025] The shape-adjustable flexible shaft 2 is fixedly connected to the front end of the adapter head 4, and a steel wire drive flexible shaft 5 is installed through the inside of the flexible shaft; the rear end of the steel wire drive flexible shaft 5 extends into the interior of the adapter head 4 and is connected to the adapter head 4 for transmission, and the front end extends outward for mounting the quick-change brush head 3; the shape-adjustable flexible shaft can be bent at any angle by means of the outer rubber-coated metal shaping hose 21, and can maintain its shape on its own after bending without the need for external support.

[0026] Reference Figure 3 The waterproof sealing structure 2 is divided into an inner and outer double-layer sleeve structure: the inner layer is a polytetrafluoroethylene sleeve 22, which completely covers the steel wire drive flexible shaft 5, isolates the metal steel wire from the outer flexible hose, reduces rotational friction, and isolates water vapor; the outer layer is a rubber-coated metal shaped flexible hose 21, with an integrally injection-molded waterproof and wear-resistant rubber coating on the outer wall of the hose, resisting water stains and oil corrosion, and improving the service life of the flexible shaft.

[0027] Reference Figure 4 A sealing head 23 is set at the front end of the flexible shaft as a front water-proof component; a through hole 231 is opened in the center of the sealing head 23 for the steel wire drive flexible shaft 5 to pass through; the inner ring of the sealing head 23 is machined with internal threads; the outer wall of the outer rubber-coated metal shaping hose 21 is machined with matching external threads; during assembly, the sealing head 23 is screwed tightly on the front end of the hose, and the end face of the sealing head presses against the hose opening to seal the gap between the pipe wall and the steel wire, preventing water from seeping inward.

[0028] Reference Figure 5The quick-change brush head 3 is set at the front end of the steel wire drive flexible shaft 5. The brush head has a radial threaded hole on its side wall, and a front-end side tightening screw 31 is installed in the hole. When the front-end side tightening screw 31 is tightened, the end of the screw abuts against the outer wall of the steel wire drive flexible shaft 5, thereby locking the brush head and the drive flexible shaft 5 together. The brush head can be removed directly by loosening the screw, thus completing the quick replacement.

[0029] In this embodiment, the shapeable flexible shaft, the wire-driven flexible shaft 5, and the quick-change brush head 3 are all independent modular components; by loosening the rear-end side tightening screw 41, the conversion head 4, together with the entire set of flexible shafts and transmission wires, can be disassembled from the front end of the handle 1, and any worn parts can be cleaned or replaced individually.

[0030] The working principle of this embodiment is as follows: Before use, bend the outer rubber-coated metal shaping hose 21 to a suitable angle according to the shape of the cleaning chamber, and the hose will automatically take shape; assemble the matching quick-change brush head 3 and lock the sealing head 23; press the button switch 14 briefly to start the drive motor 12, and the motor output shaft drives the steel wire drive flexible shaft 5 to rotate synchronously through the conversion head 4, thereby driving the front brush head to scrub the dirt in the chamber at high speed; during underwater operation, the inner polytetrafluoroethylene sleeve 22 and the front sealing head 23 cooperate to form a complete water barrier, and water cannot penetrate into the internal electrical components of the handle; after cleaning, press the button switch for a long time to stop the machine, and disassemble the brush head, sealing head, and flexible shaft module in sequence for rinsing and maintenance. Example

[0031] Reference Figure 1 , Figure 4 and Figure 5 This application discloses a control method for a shapeable flexible shaft electric cleaning brush, based on the shapeable flexible shaft electric cleaning brush of Embodiment 1, comprising the following steps: S1. Assembly and shaping steps: Match the corresponding quick-change brush head according to the material of the object to be cleaned and the shape of the cavity; insert the front end of the steel wire drive flexible shaft into the brush head bushing hole, tighten the front side tightening screw to lock the drive flexible shaft and complete the brush head locking; screw the sealing head onto the external thread of the front end of the outer rubber-coated metal shaping flexible tube; manually bend the shaping flexible shaft to the bending angle that matches the cleaning cavity, and the flexible shaft will automatically shape and maintain the bent shape by relying on the metal shaping flexible tube; S2. Start-up and speed adjustment steps: Press the handle button switch once to receive the start signal, drive the motor to start and default to low speed; each subsequent short press of the button switch cycles through the three speed levels: low, medium and high. Low speed is suitable for cleaning light dirt on easily scratched materials such as plastic and glass, medium speed is suitable for regular kitchen and bathroom dirt, and high speed is suitable for heavy limescale, rust and stubborn stains. S3 Cleaning Operation Steps: Insert the shaped flexible shaft into the target narrow and curved cavity, and use the locked rotating brush head to continuously scrub the inner wall and dead corner dirt; during underwater immersion operation, the whole machine can be completely immersed in water. The sealing head, inner polytetrafluoroethylene sleeve, and outer waterproof rubber layer work together to form a multi-layer water barrier to isolate water and prevent moisture from entering the handle electrical compartment and the inside of the flexible shaft to corrode the transmission structure; S4. Shutdown and maintenance steps: After cleaning is complete, press and hold the button switch for more than 2 seconds to cut off the power to the drive motor and stop the machine. Loosen the front side tightening screws in sequence, unscrew the front sealing head, and remove the quick-change brush head to rinse with clean water. If the flexible shaft, adapter head, and transmission steel wire are worn or corroded, loosen the rear side tightening screws, remove the adapter head and the shape-adjustable flexible shaft module as a whole, and rinse or replace the damaged components separately.

[0032] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A shapeable flexible shaft (2) electric cleaning brush, characterized in that, The device includes a handle (1), a shapeable flexible shaft (2), and a quick-change brush head (3). The handle (1) integrates a rechargeable battery (11), a drive motor (12), and a control module (13). A button switch (14) is mounted on the outer wall of the handle (1). The shapeable flexible shaft (2) is fixed to the front end of the handle (1). A conversion head (4) is fixed to one end of the shapeable flexible shaft (2) near the handle (1). The conversion head (4) is driven by the output shaft of the drive motor (12). A rear-end side clamping screw (41) passes through the side wall of the conversion head (4). The end of the rear-end side clamping screw (41) abuts against the output shaft of the drive motor (12) to lock it. A steel wire drive flexible shaft passes through the inside of the shapeable flexible shaft (2). One end of the steel wire drive flexible shaft is connected to the inside of the conversion head (4), and the other end is detachably assembled with the quick-change brush head (3). The shapeable flexible shaft (2) can be bent in any direction and maintain its shape. The waterproof sealing structure includes an outer rubber-coated metal shaped hose (21) and an inner polytetrafluoroethylene sleeve (22). The outer rubber-coated metal shaped hose (21) is integrally covered with a waterproof and wear-resistant rubber coating, and the inner polytetrafluoroethylene sleeve (22) is wrapped around the outer periphery of the steel wire drive flexible shaft.

2. The shapeable flexible shaft (2) electric cleaning brush according to claim 1, characterized in that, The rechargeable battery (11) is a low-voltage rechargeable lithium battery with a Type-C interface, providing safe low-voltage power supply for the drive motor (12) and control module (13); The push button switch (14) is electrically connected to the control module (13). The control module (13) is used to receive the signal from the push button switch (14) and control the start and stop of the drive motor (12) and the multi-speed adjustment.

3. The shapeable flexible shaft (2) electric cleaning brush according to claim 1, characterized in that, The quick-change brush head (3) is sleeved on the front end of the wire drive flexible shaft. A side tightening screw is provided through the side wall of the brush head. The front side tightening screw (31) is radially pressed against the outer wall of the wire drive flexible shaft for locking and fixing the quick-change brush head (3) with the shapeable flexible shaft (2) and the wire drive flexible shaft.

4. The shapeable flexible shaft (2) electric cleaning brush according to claim 1, characterized in that, The shapeable flexible shaft (2), the wire-driven flexible shaft, and the quick-change brush head (3) are independent modular components that can be disassembled and replaced as a whole from the front end of the handle (1).

5. The shapeable flexible shaft (2) electric cleaning brush according to claim 1, characterized in that, A bearing (42) is provided between the converter head (4) and the housing of the drive motor (12).

6. The shapeable flexible shaft (2) electric cleaning brush according to claim 1, characterized in that, The waterproof sealing structure also includes a sealing head (23), which is located between the quick-change brush head (3) and the shapeable flexible shaft (2). The sealing head (23) has a through hole in the center that matches the wire drive flexible shaft. The inner hole of the sealing head (23) is provided with an internal thread, and the outer wall of the front end of the outer rubber-coated metal shaping hose (21) is provided with a matching external thread. The sealing head (23) and the outer rubber-coated metal shaping hose (21) are connected by tightening the internal and external threads. Its function is to press and fit the end face of the hose to form a front end waterproof seal.

7. A control method for a shapeable flexible shaft (2) electric cleaning brush, based on the shapeable flexible shaft (2) electric cleaning brush according to any one of claims 1-7, characterized in that, Includes the following steps: S1. Match the corresponding quick-change brush head (3) according to the material of the object to be cleaned and the shape of the cavity; insert the front end of the steel wire drive flexible shaft into the brush head bushing hole, tighten the front side tightening screw (31) to tighten the drive flexible shaft to complete the brush head locking, and screw the sealing head (23) onto the front external thread of the outer rubber-coated metal shaping flexible tube (21); manually bend the shaping flexible shaft (2) to the bending angle that matches the cleaning cavity, and the flexible shaft will automatically shape and maintain the bent shape; S2. Press the button switch (14) on the handle (1), and the control module (13) receives the power-on signal to start the drive motor (12); press the button switch (14) briefly to cycle through the three speed levels of low, medium and high. S3. Insert the shaped flexible shaft (2) into the target area and continuously scrub the inner wall and dead corner dirt by relying on the locked rotating brush head; when the machine is fully immersed in water during underwater operation, the sealing head (23) and the waterproof sealing structure of the whole machine work together to isolate the water body and prevent water from entering the electrical compartment and the interior of the flexible shaft. S4. After cleaning, press and hold the button switch (14) to cut off the power to the drive motor (12) and stop the machine. Loosen the front side tightening screw (31) and unscrew the front sealing head (23) in sequence, and remove the quick-change brush head (3) for rinsing. If the flexible shaft, conversion head (4) and transmission steel wire are worn, loosen the rear side tightening screw (41) and remove the conversion head (4) and the shapeable flexible shaft (2) module separately for cleaning and replacement.

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