Electric cleaning brush capable of preventing resistance rod from falling off
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- PUJIANG YONGHUI PLASTIC CO LTD
- Filing Date
- 2025-07-31
- Publication Date
- 2026-08-07
AI Technical Summary
[0003]使用清洁刷进行清洗时，当刷头需要倾斜偏转与清洁面相接触进行作业，出现刷头倾斜角度较大的情况时，转动方向和螺纹拧松方向相同，阻力杆会被带动拧松，导致无法进行正常的清洁作业
1.通过设置限位部和锁紧部，通过滑块与滑槽限位滑动连接，当锁紧状态下滑块位于限位槽之内，锁紧块插入插入槽内，以限制刷头和阻力杆组之间的周向转动和轴向移动，可以实现刷头在进行倾斜偏转作业时，避免刷头和阻力杆组的连接处会发生拧松，提高刷头和阻力杆组连接的稳定性，优化使用体验。
Smart Images
Figure CN224597751U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of electric cleaning brush technology, and more specifically, relates to an electric cleaning brush that prevents the resistance rod from falling off. Background Technology
[0002] Existing electric cleaning brushes typically consist of a resistance rod assembly and a brush head. The brush head is equipped with a rotor and bristles. The rotor is connected to a rotating motor, which is controlled by a circuit board to drive the rotor to rotate, thereby using the bristles to perform cleaning operations. In existing electric cleaning brushes, the brush head and resistance rod assembly are usually connected by threads to facilitate cleaning and replacement of different brush heads as needed.
[0003] When using a cleaning brush, if the brush head needs to be tilted and deflected to contact the cleaning surface, and the tilt angle of the brush head is too large, the rotation direction is the same as the direction of loosening the threads. This will cause the resistance rod to loosen, making it impossible to perform normal cleaning operations. Utility Model Content
[0004] The technical problem to be solved by this utility model is to provide an electric cleaning brush that prevents the resistance rod from falling off. It can prevent the connection between the brush head and the resistance rod assembly from loosening when the brush head is tilted or deflected, thereby improving the stability of the connection between the brush head and the resistance rod assembly and optimizing the user experience.
[0005] This utility model provides an electric cleaning brush that prevents the resistance rod from falling off, which includes a brush head and a resistance rod assembly, wherein the brush head and the resistance rod assembly are connected sequentially. The brush head includes a limiting part, which has a through hole along its length and a sliding groove on the inner wall of the through hole. The sliding groove is arranged along the length of the limiting part. An annular limiting groove is formed on the inner wall of the limiting part near the brush head, and the limiting groove and the sliding groove are interconnected. The resistance rod assembly includes a locking part, which includes at least a locking rod and a slider. The slider is fixedly mounted on one end of the locking rod near the limiting part. The slider protrudes outward from the locking rod. The slider can match and slide with the slide groove and the limiting groove. When in the locked state, the slider slides from the slide groove into the limiting groove, and the locking rod rotates relative to the through hole to separate the slider from the slide groove and completely enter the limiting groove, thus locking the locking part and the limiting part.
[0006] As a further improvement of this utility model, the limiting part is also provided with a snap-fit notch; the snap-fit notch is provided at the opening of the through hole so that the side wall of the limiting part becomes open, and the snap-fit notch is located at the rear end of the slide groove. The locking part also includes a locking block, which is disposed on the outer side wall of the locking rod. When in the locked state, the locking rod rotates relative to the through hole until the locking block is directly opposite the locking notch, and the locking block is inserted into the locking notch to prevent rotation and limit the movement.
[0007] As a further improvement of this utility model, the locking part further includes a mounting ring, a locking sleeve, and a spring; the mounting ring is fixedly sleeved on the locking rod; the locking sleeve is slidably sleeved on the outside of the mounting ring; the spring is sleeved on the outside of the locking rod and located inside the locking sleeve, one end of the spring abuts against the end face of the mounting ring, and the other end abuts directly or indirectly against the inner wall of the locking sleeve; the extension and contraction direction of the spring is consistent with the sliding direction of the locking sleeve, and it is always in a compressed state; the locking block at least partially protrudes from the end face of the locking sleeve near the limiting part.
[0008] As a further improvement of this utility model, it also includes a limiting sleeve; the limiting sleeve is detachably nested on the outside of the limiting part; the end face of the limiting sleeve away from the brush head is provided with an insertion groove, which is opened along the axial direction of the limiting sleeve; the insertion groove is opened on the inner wall of the limiting sleeve, and the insertion groove is connected to the snap-fit notch to match the insertion locking block.
[0009] As a further improvement of this utility model, the surface of the locking rod is provided with an installation groove along the axial direction; the locking block protrudes at least partially toward the side of the locking sleeve near the locking rod, and the locking block is slidably connected to the installation groove.
[0010] As a further improvement of this utility model, the limiting part also includes an anti-rotation block; the anti-rotation block is fixedly disposed on the wall of the limiting groove, and the anti-rotation block is located between the two sliding grooves; the anti-rotation block is used to limit the rotation angle of the slider. When the slider rotates to a certain angle, the anti-rotation block abuts against the slider to limit the slider from rotating in this direction; when the slider stops rotating, the locking block is exactly aligned with the locking notch.
[0011] As a further improvement of this utility model, the locking part also includes a locking ring, which is fixedly mounted on the locking rod and protrudes outward from the locking rod; the mounting groove passes through the locking ring and is used to install the locking sleeve; when installing the locking sleeve, the end face of the locking ring away from the limiting part abuts against the inner wall of the locking sleeve.
[0012] As a further improvement of this utility model, the brush head also includes an electric unit, which is disposed inside the brush head; the electric unit includes a rotating motor, a rotating head, a circuit board, a storage battery, and a control panel; the rotating motor is electrically connected to the storage battery through the circuit board, the output end of the rotating motor is fixedly connected to one end of the rotating head, and the other end of the rotating head is fixedly connected to the brush to drive the brush to rotate; the brush is located on the outside of the brush head; the control panel is embedded in the surface of the brush head and is electrically connected to the circuit board to control the turning on or off of the rotating motor.
[0013] As a further improvement of this utility model, a pressure sensor is provided on the surface of the rotating head. The pressure sensor is electrically connected to the circuit board and is used to detect the pressure between the brush head and the cleaning surface. The control system of the circuit board has a preset maximum pressure threshold. When the brush head is not in contact with the cleaning surface, the initial rotation speed output by the rotating motor is constant. When the pressure between the brush head and the cleaning surface is lower than the maximum pressure threshold, the rotation speed output by the rotating motor is directly proportional to the pressure.
[0014] As a further improvement of this utility model, the brush head includes a housing; the housing includes a first half-shell, a second half-shell, and a bent shell; the first half-shell and the second half-shell are symmetrically arranged on the left and right, and the first half-shell and the second half-shell are interlocked with each other; the bent shell is nested on the front side of the first half-shell and the second half-shell, and the front end of the bent shell is inclined downward.
[0015] Compared with the prior art, the beneficial effects of this utility model are as follows: 1. By setting a limiting part and a locking part, the slider is connected to the sliding groove for limiting. When locked, the slider is located in the limiting groove and the locking block is inserted into the insertion groove to limit the circumferential rotation and axial movement between the brush head and the resistance rod assembly. This can prevent the connection between the brush head and the resistance rod assembly from loosening when the brush head is tilted and deflected, improve the stability of the connection between the brush head and the resistance rod assembly, and optimize the user experience.
[0016] 2. By setting a pressure sensor, the pressure detected by the pressure sensor is related to the rotation speed output by the rotating motor. Under normal circumstances, by applying pressure to the cleaning surface with the brush head, the rotation speed of the brush head increases with the increase of pressure, thereby improving the cleaning power. At the same time, a maximum pressure value is preset. When the pressure is too high, the rotation speed of the rotating motor is controlled to protect the brush head from damage. When the cleaning is completed and the brush head is lifted, the rotation speed of the brush head is gradually slowed down to prevent the residual sewage in the brush head from being thrown out by centrifugal force. Attached Figure Description
[0017] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a schematic diagram of the structure of the limiting part and the locking part of this utility model; Figure 3 This is an exploded view of the limiting part and the locking part of this utility model; Figure 4 This is a schematic diagram of the limiting part of this utility model; Figure 5 This is a cross-sectional view of the limiting part of this utility model; Figure 6 This is another cross-sectional view of the limiting part of this utility model; Figure 7This is a schematic diagram of the snap-fit notch and insertion slot of this utility model; Figure 8 This is a schematic diagram of the working mechanism of the slide groove and slider of this utility model; Figure 9 This is a cross-sectional view of the locking part of this utility model; Figure 10 This is a cross-sectional view of the locking sleeve of this utility model; Figure 11 This is a schematic diagram of the insertion slot and locking block of this utility model. Figure 12 This is a cross-sectional view of the slider of this utility model in the locked state; Figure 13 This is an internal sectional view of the locking sleeve of this utility model; Figure 14 This is a schematic diagram of the locking rod of this utility model; Figure 15 This is a schematic diagram of the locking sleeve of this utility model; Figure 16 This is an exploded view of the mounting ring and the rod sleeve of this utility model; Figure 17 This is an exploded view of the electric unit of this utility model; Figure 18 This is a schematic diagram of the overall structure of the brush head of this utility model.
[0018] Explanation of the labels in the diagram: Housing 1, First half-shell 11, Second half-shell 12, Elbow shell 13, Electric unit 2, Rotating motor 21, Rotating head 22, Circuit board 23, Energy storage battery 24, Charging port 25, Control panel 26, Battery ring 27, Limiting part 3, Through hole 31, Slide groove 32, Snap-fit groove 33, Limiting groove 34, Anti-rotation block 35, Snap-fit notch 36, Limiting sleeve 4, Insertion groove 41, Locking part 5, Locking rod 51, Slider 52, Mounting ring 53, Locking sleeve 54, Mounting groove 55, Locking block 56, Spring 57, Locking ring 58, Spring ring 59. Detailed Implementation
[0019] Specific Implementation Example 1: Please refer to... Figures 1-16 An electric cleaning brush that prevents the resistance rod from falling off includes a brush head and a resistance rod assembly, which are connected sequentially.
[0020] The brush head includes a housing 1, a limiting part 3, and a limiting sleeve 4. A brush is provided at the front end of the housing 1, and the rear end of the housing 1 is connected to the resistance rod assembly through the limiting part 3 and the limiting sleeve 4.
[0021] In this embodiment, the limiting part 3 is a cylindrical body, which is fixedly installed at the tail end of the housing 1 away from the brush. The limiting part 3 is provided with a through hole 31, a sliding groove 32, a snap-fit groove 33, a limiting groove 34, and a snap-fit notch 36.
[0022] The through hole 31 is the central hole of the cylinder, and is opened along the length of the limiting part 3. The sliding groove 32 is horizontally arranged on the inner wall of the through hole 31 along the length of the limiting part 3. There are two sliding grooves 32, which are symmetrically arranged on the left and right sides of the through hole 31. The limiting groove 34 is an annular groove, which is located on the side of the through hole 31 near the brush head. The limiting groove 34 and the sliding groove 32 are interconnected. An anti-rotation block 35 is fixedly arranged on the wall of the limiting groove 34, and the anti-rotation block 35 is located between the two sliding grooves 32.
[0023] There are two snap-fit notches 36. The snap-fit notches 36 are located at the opening of the through hole 31 so that the side wall of the cylinder is open. The two snap-fit notches 36 are located at the rear end of the corresponding slide groove 32 (i.e. the end away from the brush). The snap-fit notches 36 and the slide groove 32 form a stepped surface.
[0024] The snap-fit groove 33 is provided on the outer surface of the limiting part 3. The snap-fit groove 33 is located at the end of the limiting part 3 near the brush head. There are two snap-fit grooves 33, which are symmetrically located on both sides of the limiting part 3.
[0025] The limiting sleeve 4 is nested outside the limiting part 3, and the inner wall of the limiting sleeve 4 is engaged with the limiting part 3 through the snap-fit groove 33. An insertion groove 41 is formed on the end face of the limiting sleeve 4 away from the brush head, extending axially along the limiting sleeve 4. Two insertion grooves 41 are formed on the inner wall of the limiting sleeve 4, symmetrically arranged on the left and right sides of the opening of the limiting sleeve 4. The insertion groove 41 corresponds to and communicates with the snap-fit notch 36.
[0026] The resistance rod assembly includes a locking part 5 and a rod sleeve, which are connected sequentially. The locking part 5 includes a locking rod 51, a slider 52, a mounting ring 53, a locking sleeve 54, a spring 57, and a locking ring 58.
[0027] The locking rod 51 includes a locking section and an installation section arranged sequentially from front to back. The locking section is located on the side closer to the limiting part 3, and the outer diameter of the installation section is larger than the outer diameter of the locking section. The length of the locking section matches the length of the through hole 31 of the limiting part 3, so that the locking section can be fully inserted into the through hole 31.
[0028] The slider 52 is fixedly mounted on the front side of the locking section of the locking rod 51. The slider 52 protrudes outward from the locking rod 51, and two sliders 52 are symmetrically arranged on the left and right sides of the locking rod 51. The slider 52 can match and slide with both the slide groove 32 and the limiting groove 34. In use, the slider 52 is inserted into the slide groove 32 from the opening side of the through hole 31, and the slider 52 slides against the side wall of the slide groove 32. After sliding out of the slide groove 32, the slider 52 enters the limiting groove 34, and the slider 52 slides against the limiting groove 34. After the locking rod 51 rotates a certain angle (preferably 90° in this embodiment), the slider 52 is completely slid into the limiting groove 34. The anti-rotation block 35 is used to limit the rotation angle of the slider 52. When the slider 52 rotates to a certain angle, the anti-rotation block 35 abuts against the slider 52 to limit the slider 52 from rotating in that direction.
[0029] The locking ring 58 is fixedly installed at the boundary between the locking section and the installation section, and the locking ring 58 protrudes outward from the installation section.
[0030] The mounting section surface of the locking rod 51 has an axially oriented mounting groove 55, which passes through the locking ring 58 and is used to mount the locking sleeve 54. There are two mounting grooves 55, which are symmetrically arranged on both sides of the mounting section, one above the other, and the mounting grooves 55 are spaced 90° apart from the slider 52.
[0031] The locking sleeve 54 is nested on the mounting section. A spring ring 59 is provided on the front side of the locking sleeve 54 (the side near the limiting part 3). The spring ring 59 is a circular structure and extends inward to the locking sleeve 54. The locking sleeve 54 is inserted from the rear side of the mounting section.
[0032] Two inwardly protruding locking blocks 56 are symmetrically arranged on the upper and lower sides of the spring ring 59. The locking blocks 56 are located on the inner side of the spring ring 59 and include a sliding part and an insertion part. The insertion part and the sliding part are arranged sequentially front and back. The insertion part is located on the outer side of the locking sleeve 54 facing the limiting part 3, while the sliding part is located on the inner side of the locking sleeve 4. The sliding part and the insertion part are the front and back parts of the locking block 56. During installation, the locking block 56 is embedded in the mounting groove 55 and slidably connected with the mounting groove 55 so that the locking sleeve 54 can slide horizontally along the mounting groove 55. Preferably, the head of the insertion part (i.e., the end of the locking block 56 that is inserted into the snap-fit notch 36) has at least one side that is arc-shaped to facilitate the insertion of the locking block 56 into the limiting part 3 and the limiting sleeve 4.
[0033] The mounting ring 53 is nested on the mounting section. The mounting section has flat grooves on its upper and lower sides, with each groove located on the left and right sides of the mounting groove 55. The grooves extend from the middle to the rear end of the mounting section. The grooves and the mounting section form a stepped surface. When the mounting ring 53 is installed, its front side (near the limiting part 3) abuts against the stepped surface to restrict axial movement. Symmetrical protrusions are fixedly provided on both the upper and lower sides of the mounting ring 53. Two protrusions extend inwards from the mounting ring 53, with their protruding portions embedded within the mounting groove 55, forming a slidable connection. The flat portions of the protrusions abut against their corresponding flat grooves. The mounting ring 53 is located inside the locking sleeve 54. In this embodiment, the sleeve is fixedly nested on the rear side of the mounting ring 53 to ensure installation, and the end face of the sleeve abuts against the rear side of the mounting ring 53; it should be noted that the sleeve is the part where the user holds the cleaning brush, and the sleeve is a conventional existing sleeve.
[0034] Spring 57 is disposed between locking sleeve 54 and mounting ring 53. The front end of spring 37 abuts against the rear side of spring ring 59 of locking sleeve 54. Spring 37 is located outside the insertion part of locking block 56. The rear end of spring 37 abuts against mounting ring 53. When the locking sleeve 54 is installed on the mounting section, the locking sleeve 54 is pressed against the spring 57. The front side of the spring ring 59 abuts against the rear side of the locking ring 58 (the side away from the limiting part 3). The front side of the locking sleeve 54 is exactly flush with the plane where the locking ring 58 is located. The insertion part of the locking block 56 protrudes towards the locking section of the locking rod 51 and is located outside the mounting groove 55. When the brush head is installed into the resistance rod assembly, the operator manually presses and slides the locking sleeve 54. The spring 57 continues to be compressed, and the locking sleeve 54 slides away from the locking ring 58. The sliding part of the locking block 56 slides backward along the mounting groove 55, and the insertion part of the locking block 56 retracts inward into the mounting groove 55.
[0035] Working principle: Before locking, slider 52 is aligned with slide groove 32, and locking section of locking rod 51 is inserted into through hole 31. Slider 52 slides axially along slide groove 32 into limiting groove 34 until the insertion part of locking block 56 abuts against limiting sleeve 4. At this time, by hand, locking sleeve 54 is pinched and slid backward, spring 37 is compressed, locking sleeve 54 and mounting ring 53 move closer to each other, and insertion part of locking block 56 retracts inward into mounting groove 55. Continue to push locking sleeve 54 forward until locking ring 58 and locking sleeve 54 are in contact. When the slider 32 is inserted into the limiting groove 34, the locking sleeve 54 is rotated 90° counterclockwise, causing the locking rod 51 to rotate, so that the slider 52 abuts against the anti-rotation block 35. At this time, the insertion part of the locking block 56 is aligned with the insertion groove 41, the spring 37 returns to its original position, the locking sleeve 54 moves forward, and the locking block 56 is inserted into the snap-fit notch 36. The locking block 56 abuts against the snap-fit notch 36, further improving the stability of the locking. At the same time, it restricts the circumferential rotation and axial movement between the brush head and the resistance rod assembly.
[0036] Specific Implementation Example 2: Please refer to Figures 17-18 An electric cleaning brush that prevents the resistance rod from falling off, the brush head also includes an electric unit 2, a battery ring 27 and a brush.
[0037] Specifically, the housing 1 includes a first half-shell 11, a second half-shell 12, and an elbow shell 13. The first half-shell 11 and the second half-shell 12 are symmetrically arranged, with the first half-shell 11 on the left and the second half-shell 12 on the right, and they are interlocked. In this embodiment, the rear ends of the first half-shell 11 and the second half-shell 12 cooperate to form a limiting part 3, and the first half-shell 11 and the second half-shell 12 in front of the limiting part 3 cooperate to form a receiving cavity. The elbow shell 13 has a hollow structure, and the receiving cavity and the elbow shell 13 are used to house the electric unit 2. The elbow shell 13 is nested in front of the first half-shell 11 and the second half-shell 12. A pin hole is opened on the side wall of the elbow shell 13, and corresponding pin cylinders are opened on the first half-shell 11 and the second half-shell 12. When the elbow shell 13 is nested in the first half-shell 11 and the second half-shell 12, the pin hole and the pin cylinder are coaxially arranged. The pin hole and the pin cylinder are connected by a pin (not shown in the figure). The front end of the elbow shell 13 is tilted downwards and faces the clean surface, and the rear end of the elbow shell 13 is connected to the first half shell 11 and the second half shell 12.
[0038] The electric unit 2 is disposed inside the brush head. In this embodiment, the electric unit 2 is disposed between the first half-shell 11 and the second half-shell 12, and inside the elbow shell 13. The electric unit 2 includes a rotating head base, a rotating motor 21, a rotating head 22, a circuit board 23, and an energy storage battery 24.
[0039] The rotating head base is nested on the side of the elbow housing 13 facing the cleaning surface. The rotating motor 21 is fixedly mounted on the upper side of the rotating head base, and the rotating head 22 is fixedly mounted on the lower side of the rotating head base. The rotating motor 21 is located inside the elbow housing 13 and is electrically connected to the energy storage battery 24 through the circuit board 23. The output end of the rotating motor 21 is fixedly connected to one end of the rotating head 22, which is located on the outside of the elbow housing 13. The other end of the rotating head 22 is fixedly connected to the brush to drive the brush to rotate. The brush is located on the outside of the brush head and is used to clean the dirty surface. The brush is a conventional brush.
[0040] The circuit board 23 also includes a control panel 26, which is embedded in the surface of the brush head and located on the upper side of the joint between the first half-shell 11 and the second half-shell 12. The control panel 26 is electrically connected to the circuit board 23 to control the opening and closing of the rotating motor 21. The control panel 26 is a conventional control panel.
[0041] The rotating head 22 is located on the outside of the rotating head base. A pressure sensor is installed on the surface of the rotating head 22, and the pressure sensor is electrically connected to the circuit board 23 to detect the pressure between the brush head and the cleaning surface. The control system of the circuit board 23 has a preset maximum pressure threshold. When the brush head is not in contact with the cleaning surface, the initial rotation speed output by the rotating motor 21 is constant, and the brush head rotates at a relatively slow speed. When the brush head comes into contact with the cleaning surface, the user applies pressure to one side of the brush head through the resistance rod assembly. When the pressure between the brush head and the cleaning surface is lower than the maximum pressure threshold, the rotation speed output by the rotating motor 21 is directly proportional to the pressure, and the rotation speed of the brush head gradually increases as the pressure increases.
[0042] As the pressure between the brush head and the cleaning surface gradually increases, when the pressure between the brush head and the cleaning surface is greater than or equal to the maximum pressure threshold, the rotating motor 21 stops rotating, thus protecting both the brush head and the rotating motor 21. After the rotating motor 21 stops rotating, when the pressure drops to zero and remains at zero for a certain period of time, the rotating motor 21 returns to its initial speed.
[0043] After the brush head has been used properly, lift the brush head upwards. As the pressure gradually decreases until it drops to zero, the rotating motor 21 gradually returns to its initial speed from the fast state.
[0044] The battery ring 27 is nested on the limiting part 3 near the brush head. One side of the battery ring 27 abuts against the first half-shell 11 and the second half-shell 12, and the other side abuts against the locking sleeve 4. A cover plate extends from the lower side of the battery ring 27. The energy storage battery 24 is equipped with an external charging cable, and the charging port 25 of the external charging cable is exposed on the lower side of the brush head. The cover plate of the battery ring 27 and the charging port 25 can be interlocked.
[0045] Before the brush head contacts the cleaning surface, the initial rotational speed output by the rotating motor 21 is constant, and the brush head rotates at a relatively slow speed. When the brush head contacts the cleaning surface, the user applies pressure to one side of the brush head through the resistance rod assembly. When the pressure between the brush head and the cleaning surface is lower than the maximum pressure threshold, the rotational speed of the brush head gradually increases with the increase of pressure, thereby increasing the cleaning power. As the pressure between the brush head and the cleaning surface gradually increases, when the pressure between the brush head and the cleaning surface is greater than or equal to the maximum pressure threshold, the rotating motor 21 stops rotating, which protects the brush head and the rotating motor 21 from damage. When the pressure drops to zero and remains at zero for a certain period of time, the rotating motor 21 returns to the initial rotational speed and resumes operation. When the cleaning is completed and the brush head is lifted, the rotational speed of the brush head is gradually slowed down to prevent the residual wastewater in the brush head from being thrown out by centrifugal force.
Claims
1. An electric cleaning brush with anti-detachment resistance rod assembly, comprising a brush head and a resistance rod assembly connected sequentially front to back; characterized in that: The brush head includes a limiting part (3), which has a through hole (31) along its length direction. The inner wall of the through hole (31) has a sliding groove (32) along its length direction. The sliding groove (32) is provided along the length direction of the limiting part (3). The inner wall of the limiting part (3) near the brush head has an annular limiting groove (34), and the limiting groove (34) and the sliding groove (32) are interconnected. The resistance rod assembly includes a locking part (5), which includes at least a locking rod (51) and a slider (52). The slider (52) is fixedly mounted on one end of the locking rod (51) near the limiting part (3). The slider (52) protrudes outward from the locking rod (51). The slider (52) can match and have a sliding connection with the slide groove (32) and the limiting groove (34). When in the locked state, the slider (52) slides from the slide groove (32) into the limiting groove (34), and the locking rod (51) rotates relative to the through hole (31) so that the slider (52) separates from the slide groove (32) and completely enters the limiting groove (34), and the locking part (5) and the limiting part (3) limit and lock.
2. The electric cleaning brush with anti-resistance rod detachment according to claim 1, characterized in that: The limiting part (3) is also provided with a snap-fit notch (36); the snap-fit notch (36) is provided at the opening of the through hole (31) so that the side wall of the limiting part (3) becomes open, and the snap-fit notch (36) is located at the rear end of the slide groove (32); the locking part (5) also includes a locking block (56), which is provided on the outer side wall of the locking rod (51); when in the locked state, the locking rod (51) rotates relative to the through hole (31) until the locking block (56) is directly opposite the snap-fit notch (36), and the locking block (56) and the snap-fit notch (36) are inserted to prevent rotation and limit the movement.
3. The electric cleaning brush with anti-resistance rod detachment according to claim 2, characterized in that: The locking part (5) also includes a mounting ring (53), a locking sleeve (54), and a spring (57); the mounting ring (53) is fixedly sleeved on the locking rod (51); the locking sleeve (54) is slidably sleeved on the outside of the mounting ring (53); the spring (57) is sleeved on the outside of the locking rod (51) and located inside the locking sleeve (54), one end of the spring (57) abuts against the end face of the mounting ring (53), and the other end abuts directly or indirectly against the inner wall of the locking sleeve (54); the extension and retraction direction of the spring (57) is consistent with the sliding direction of the locking sleeve (54), and it is always in a compressed state; the locking block (56) is at least partially protruding from the end face of the locking sleeve (54) near the limiting part (3).
4. The electric cleaning brush with anti-resistance rod detachment according to claim 2, characterized in that: It also includes a limiting sleeve (4); the limiting sleeve (4) is detachably nested on the outside of the limiting part (3); the end face of the limiting sleeve (4) away from the brush head is provided with an insertion groove (41), the insertion groove (41) is opened along the axial direction of the limiting sleeve (4); the insertion groove (41) is opened on the inner wall of the limiting sleeve (4), and the insertion groove (41) is connected to the snap-fit notch (36) to match the insertion locking block (56).
5. An electric cleaning brush with anti-resistance rod detachment according to claim 3, characterized in that: The surface of the locking rod (51) is provided with an installation groove (55) along the axial direction; the locking block (56) is at least partially protruding towards the side of the locking sleeve (54) near the locking rod (51), and the locking block (56) is slidably connected to the installation groove (55).
6. The electric cleaning brush with anti-resistance rod detachment according to claim 2, characterized in that: The limiting part (3) also includes an anti-rotation block (35); the anti-rotation block (35) is fixedly installed on the wall of the limiting groove (34), and the anti-rotation block (35) is located between the two sliding grooves (32); the anti-rotation block (35) is used to limit the rotation angle of the slider (52). When the slider (52) rotates to a certain angle, the anti-rotation block (35) abuts against the slider (52) to limit the slider (52) from rotating in this direction; when the slider (52) stops rotating, the locking block (56) is exactly aligned with the snap-fit notch (36).
7. The electric cleaning brush with anti-resistance rod detachment according to claim 5, characterized in that: The locking part (5) also includes a locking ring (58), which is fixedly mounted on the locking rod (51). The locking ring (58) protrudes outward from the locking rod (51). The mounting groove (55) passes through the locking ring (58) and is used to install the locking sleeve (54). When the locking sleeve (54) is installed, the end face of the locking ring (58) away from the limiting part (3) abuts against the inner wall of the locking sleeve (54). At this time, the locking block (56) is inserted into the snap-fit notch (36).
8. The electric cleaning brush with anti-resistance rod detachment according to claim 1, characterized in that: The brush head also includes an electric unit (2), which is located inside the brush head. The electric unit (2) includes a rotating motor (21), a rotating head (22), a circuit board (23), a storage battery (24), and a control panel (26). The rotating motor (21) is electrically connected to the storage battery (24) through the circuit board (23). The output end of the rotating motor (21) is fixedly connected to one end of the rotating head (22), and the other end of the rotating head (22) is fixedly connected to the brush to drive the brush to rotate. The brush is located on the outside of the brush head. The control panel (26) is embedded on the surface of the brush head and is electrically connected to the circuit board (23) to control the opening or closing of the rotating motor (21).
9. An electric cleaning brush with anti-resistance rod detachment according to claim 8, characterized in that: A pressure sensor is provided on the surface of the rotating head (22). The pressure sensor is electrically connected to the circuit board (23) to detect the pressure between the brush head and the cleaning surface. The control system of the circuit board (23) has a preset maximum pressure threshold. When the brush head is not in contact with the cleaning surface, the initial rotation speed output by the rotating motor (21) is constant. When the pressure between the brush head and the cleaning surface is lower than the maximum pressure threshold, the rotation speed output by the rotating motor (21) is proportional to the pressure.
10. An electric cleaning brush with anti-resistance rod detachment according to claim 1, characterized in that: The brush head includes a housing (1); the housing (1) includes a first half-shell (11), a second half-shell (12) and a bent shell (13); the first half-shell (11) and the second half-shell (12) are arranged symmetrically on the left and right, and the first half-shell (11) and the second half-shell (12) are interlocked with each other; the bent shell (13) is nested in front of the first half-shell (11) and the second half-shell (12), and the front end of the bent shell (13) is inclined downward.