A scrubbing brush device and a scrubber

Abstract

This technical solution belongs to the field of scrubbing device technology, specifically relating to a scrubbing brush device and scrubbing device, including a brush head drive component; a rotating sleeve, which is disposed on the output shaft of the brush head drive component and is rotatably disposed relative to the brush head drive component, the rotating sleeve having a snap-fit ​​connector, the snap-fit ​​connector having at least two snap-fit ​​portions distributed circumferentially; a scrubbing brush, which is detachably connected to the rotating sleeve, the scrubbing brush having an installation cavity, the installation cavity having a plurality of snap-fit ​​grooves opened along the inner sidewall of the cavity, the extension direction of each snap-fit ​​groove corresponding to the rotation direction of the snap-fit ​​connector, the snap-fit ​​groove and the snap-fit ​​portion being arranged one-to-one; the end of the snap-fit ​​portion having a snap-fit ​​groove recessed, the sidewall of the snap-fit ​​groove correspondingly having a snap-fit ​​protrusion; after the snap-fit ​​connector is axially inserted into the installation cavity, the scrubbing brush and the rotating sleeve rotate relative to each other, the snap-fit ​​portion is guided into the corresponding snap-fit ​​groove, so that the snap-fit ​​protrusion and the snap-fit ​​groove are engaged, the brush head drive component drives the snap-fit ​​connector to rotate, the snap-fit ​​connector abuts against the inner wall of the snap-fit ​​groove to push the scrubbing brush to rotate synchronously.

Description

Technical Field

[0001] This technical solution relates to the field of scrubbing technology, specifically to a scrubbing brush device and a scrubbing device. Background Technology

[0002] A scrubber is a cleaning tool that typically includes a handle, a motor, a brush, and one or more spray nozzles. The motor drives the brush to rotate at high speed, scrubbing away dirt through friction. Clean water is pumped through the internal pipes of the scrubber to the spray nozzles near the brush, spraying out clean water or cleaning solution while scrubbing.

[0003] For example, Chinese patent CN218165153U discloses a fluid distribution scrubber, including a scrubber head positioned near the scrubbing end, the scrubber head supporting a motor, the motor being operatively connected to a brush and electrically connected to a battery pack, the brush being adjacent to the scrubbing end and operable to scrub the surface when the motor is operating, and the scrubber head being supported by a pivot joint for pivoting movement.

[0004] The scrubbing head in the aforementioned fluid distribution scrubber is connected to the main body via a pivot joint. Although the angle can be flexibly adjusted, replacing the brush head requires disconnecting the motor coupling, separating the circuit interface, and operating the pivot structure lock. The process is cumbersome and can easily damage precision components. Maintenance is inconvenient, replacement efficiency is low, and use is troublesome, so improvements are needed. Summary of the Invention

[0005] This technical solution aims to improve the problem of cumbersome disassembly and replacement of scrubbing heads, which leads to inconvenience in disassembly and use. It provides a scrubbing brush device and a scrubbing head.

[0006] The purpose of this technical solution is achieved as follows:

[0007] A scrubbing brush device, comprising:

[0008] Brush head driver;

[0009] A rotating sleeve is disposed on the output shaft of the brush head drive component and is rotatably disposed relative to the brush head drive component. The rotating sleeve is provided with a snap-fit ​​connector, and the snap-fit ​​connector has at least two snap-fit ​​portions distributed circumferentially.

[0010] A scrubbing brush is detachably connected to the rotating sleeve. The scrubbing brush has a mounting cavity. The mounting cavity has a plurality of snap-fit ​​grooves along its inner sidewall. The extension direction of each snap-fit ​​groove corresponds to the rotation direction of the snap-fit ​​part. The snap-fit ​​grooves and the snap-fit ​​parts are arranged one-to-one.

[0011] The end of the snap-fit ​​part is recessed with a snap-fit ​​groove, and the side wall of the snap-fit ​​groove has a corresponding snap-fit ​​protrusion. After the snap-fit ​​connector is axially embedded into the mounting cavity, the scrubbing brush and the rotating sleeve rotate relative to each other. The snap-fit ​​part is guided into the corresponding snap-fit ​​groove, so that the snap-fit ​​protrusion and the snap-fit ​​groove are engaged. The brush head drive unit drives the snap-fit ​​connector to rotate, and the snap-fit ​​connector abuts against the inner wall of the snap-fit ​​groove to push the scrubbing brush to rotate synchronously.

[0012] With the above technical solution, when a scrubbing brush device is in normal use, the mounting cavity of the scrubbing brush is axially inserted into the snap-fit ​​connector of the rotating sleeve. Then, the scrubbing brush and the rotating sleeve are rotated relative to each other, so that each snap-fit ​​part is inserted into the snap-fit ​​groove along the corresponding tangential direction in the mounting cavity until the snap-fit ​​protrusion and the snap-fit ​​groove are automatically engaged and locked. The simple operation of insertion and rotation simplifies the scrubbing brush assembly and disassembly steps, while ensuring a firm and reliable connection during operation, effective power transmission, and more convenient replacement.

[0013] Preferably, the side wall of the snap-fit ​​groove near the mounting cavity includes a guide surface one, a guide surface two, and an abutment surface in sequence. The snap-fit ​​protrusion is located on the guide surface two. The guide surface one has pre-cuts distributed along the snap-fit ​​part cutting direction. The side end face of the snap-fit ​​groove opposite to the pre-cuts is the abutment surface. The abutment surface is adapted to the side wall of the snap-fit ​​part.

[0014] Through the above technical solution, the snap-fit ​​part enters the snap-fit ​​groove through the first cut and is guided along the first guide surface to the second guide surface. The snap-fit ​​part moves along the second guide surface until the snap-fit ​​groove and the snap-fit ​​protrusion are engaged. When the snap-fit ​​part is in the engaged position, the side wall of the snap-fit ​​part abuts against the abutting surface, providing effective lateral support and limiting. When the snap-fit ​​part rotates, the snap-fit ​​part can push the corresponding abutting surface, thereby driving the scrubbing brush to rotate.

[0015] Preferably, the scrubbing brush has a positioning cavity, which communicates with the mounting cavity and is used for the insertion of the end of the rotating sleeve.

[0016] With the above technical solution, when the mounting cavity of the scrubbing brush is axially fitted into the snap joint of the rotating sleeve, the end of the rotating sleeve is simultaneously embedded in the positioning cavity, forming an additional radial wrapping support, which shares the torsional load and improves the resistance to deformation, thereby improving the reliability and stability of the connection structure.

[0017] Preferably, a clamping space is provided between the rotating sleeve and the snap-fit ​​connector, a limiting part is formed between the snap-fit ​​groove and the positioning cavity, the limiting part is embedded in the clamping space, the end face of the rotating sleeve near the clamping space is in contact with the upper end face of the limiting part, and the end face of the snap-fit ​​connector near the clamping space is in contact with the side wall of the limiting part located in the snap-fit ​​groove.

[0018] Through the above technical solution, the clamping space circumferentially covers the limiting part, and the inner end faces of the clamping space on both sides abut against the opposite end faces of the limiting part, forming axial constraint, strengthening axial tensile strength, reducing axial swing, and improving the structural integrity and power transmission rigidity of the scrubbing disc under high load conditions.

[0019] Preferably, the positioning cavity has several positioning protrusions protruding circumferentially along its inner wall.

[0020] With the above technical solution, after the positioning cavity of the scrubbing brush is embedded in the end of the rotating sleeve, several positioning protrusions distributed circumferentially on the inner wall of the positioning cavity directly contact the outer wall of the end of the rotating sleeve, providing multi-point guidance and forming discrete rigid support, dispersing radial load, reducing rotational friction loss through multi-point contact, and further improving stability.

[0021] Preferably, the snap-fit ​​protrusion has a guide surface along the opposite sidewall.

[0022] Through the above technical solution, the guide surfaces on both sides of the snap-fit ​​protrusion contact the snap-fit ​​part in an inclined manner during the rotation locking process, automatically correcting the alignment deviation to guide the fitting position, while reducing rotational resistance to reduce structural wear and improve fitting efficiency.

[0023] Preferably, the inner wall of the snap-fit ​​groove has an abutment surface, and the inclination direction of the abutment surface is adapted to the side wall of the snap-fit ​​part.

[0024] Through the above technical solution, the inclined adaptation design of the inner wall abutting surface of the snap-fit ​​groove and the side wall of the snap-fit ​​part allows the abutting surface to come into contact with the side wall of the snap-fit ​​part during the rotation of the rotating sleeve, converting the driving torque into uniform tangential pressure, improving the smoothness of power transmission, and enhancing the rotational stability of the scrubbing brush.

[0025] Preferably, the inner side of the snap-fit ​​portion has a cavity.

[0026] Through the above technical solution, the cavity reduces the thickness of the snap-fit ​​part and improves the deformation capacity. When the snap-fit ​​part is squeezed, the thin-walled area produces slight elastic deformation, which reduces the rigid resistance when the snap-fit ​​protrusion and the snap-fit ​​groove are engaged. After the deformation is released, the elastic recovery force pushes the snap-fit ​​protrusion to be tightly embedded in the snap-fit ​​groove, ensuring that the engagement is in place and improving the smoothness of assembly and the reliability of connection.

[0027] Preferably, the snap-fit ​​connector has three snap-fit ​​portions, the number of snap-fit ​​slots is the same as the number of snap-fit ​​portions, and the three snap-fit ​​portions are arranged in a triangular pattern.

[0028] Through the above technical solution, the three triangularly distributed locking parts cooperate with the corresponding locking slots to form a three-point synchronous engagement during rotation locking. The triangular layout structure is relatively stable, and the working torque is evenly distributed to each locking point, thereby enhancing the connection stability.

[0029] A scrubbing device includes a scrubbing body and a scrubbing brush device as described in any of the preceding claims, wherein the brush head drive is hinged to the front end of the scrubbing body.

[0030] Through the above technical solution, the hinged brush head drive component at the front end of the scrubbing device has a hinged structure that allows the brush head drive component to be adjusted at multiple angles. Combined with the three-point synchronous engagement and elastic deformation design, it significantly improves the flexibility of scrubbing operations.

[0031] The key and beneficial technical effects of this technical solution compared to existing technologies are:

[0032] 1. This technical solution uses the snap-fit ​​connector of the rotating sleeve to be embedded into the mounting cavity of the scrubbing brush. By rotating the scrubbing brush and the rotating sleeve relative to each other, each snap-fit ​​part is embedded into the snap-fit ​​groove along the corresponding tangential direction in the mounting cavity. The positions of the snap-fit ​​protrusion and the snap-fit ​​groove are automatically matched and locked, simplifying the disassembly and assembly steps of the scrubbing brush and making replacement more convenient.

[0033] 2. This technical solution uses a scrubbing brush to create a positioning cavity for the end of the rotating sleeve to be embedded. Several positioning protrusions protrude circumferentially along the inner wall of the positioning cavity and abut against the outer wall of the rotating sleeve at multiple points, dispersing the radial load. The multi-point contact reduces rotational friction loss and improves stability. Attached Figure Description

[0034] Figure 1 This is a schematic diagram of the overall structure of the scrubbing device in the embodiment;

[0035] Figure 2 This is a schematic diagram of the overall structure of the scrubbing brush device in the embodiment;

[0036] Figure 3 This is a partial explosion diagram of the scrubbing brush device in the embodiment;

[0037] Figure 4 This is a partial explosion diagram of the rotating sleeve and scrubbing brush after the bristles have been removed, as shown in the embodiment.

[0038] Figure 5 This is a schematic diagram of the scrubbing brush device from another perspective in the embodiment;

[0039] Figure 6 This embodiment Figure 5 Enlarged view of a portion;

[0040] Figure 7 This embodiment Figure 1 Side sectional view.

[0041] Reference numerals: 1. Brush head drive component; 2. Rotating sleeve; 3. Scrubbing brush; 4. Snap-fit ​​connector; 41. Snap-fit ​​part; 5. Mounting cavity; 51. Snap-fit ​​groove; 61. Snap-fit ​​recess; 62. Snap-fit ​​protrusion; 7. Positioning cavity; 81. Guide surface one; 82. Guide surface two; 83. Abutting surface; 9. Cavity; 10. Scrubbing device body; 11. Positioning protrusion; 12. Guide surface; 13. Pre-cut; 14. Clamping space; 15. Limiting part; 100. Drive shaft; 200. Shaft hole. Detailed Implementation

[0042] The specific implementation of this technical solution will be further described in detail below with reference to the accompanying drawings.

[0043] Example:

[0044] See Figure 2 A scrubbing brush device includes a brush head drive 1, a rotating sleeve 2, and a scrubbing brush 3. The brush head drive 1 is preferably a drive motor, which can be hinged to the end of the scrubber to achieve free rotation and expand the cleaning angle and range. The rotating sleeve 2 is located on the side of the brush head drive 1 where the drive shaft 100 is located. The upper part of the rotating sleeve 2 is sleeved on the end of the brush head drive 1, and the lower part of the rotating sleeve 2 is used for detachably installing the scrubbing brush 3. In this embodiment, the scrubbing brush 3 has a cavity on the side away from the rotating sleeve 2, and multiple bristles are inserted into the cavity for scrubbing.

[0045] See Figure 3 and Figure 4 In this embodiment, the rotating sleeve 2 has a shaft hole 200, and the drive shaft 100 of the brush head drive 1 passes through the shaft hole 200 to realize the rotating sleeve 2 being fixedly connected to the drive shaft 100; the scrubbing brush 3 has a positioning cavity 7 and an installation cavity 5. The positioning cavity 7 and the installation cavity 5 are both located at the center of the scrubbing brush 3 and the two cavities are opposite to each other. The installation cavity 5 is opened on the front side of the scrubbing brush 3 with bristles, and the positioning cavity 7 is opened on the rear side of the scrubbing brush 3 away from the bristles, and the positioning cavity 7 and the installation cavity 5 are connected.

[0046] The rotating sleeve 2 is provided with a snap-fit ​​connector 4, which can be made of plastic and has a certain deformation capability. The snap-fit ​​connector 4 has at least two snap-fit ​​parts 41. In this embodiment, the snap-fit ​​connector 4 is shown to have three snap-fit ​​parts 41. The three snap-fit ​​parts 41 are evenly distributed in a triangle. The included angle between two adjacent snap-fit ​​parts 41 is 120 degrees. A cavity 9 is left inside the snap-fit ​​part 41 to reduce the material cost of the snap-fit ​​part 41 and further improve the deformation effect of the snap-fit ​​part 41. The shape and size of the mounting cavity 5 are adapted to the snap-fit ​​connector 4.

[0047] The positioning cavity 7 has several positioning protrusions 11. There are three positioning protrusions 11, which are distributed circumferentially along the inner wall of the positioning cavity 7. The shape and size of the positioning cavity 7 are adapted to the rotating sleeve 2. When the snap-fit ​​connector 4 passes through the positioning cavity 7 and is inserted into the installation cavity 5, the end of the rotating sleeve 2 can be inserted into the positioning cavity 7 accordingly, and the positioning protrusions 11 abut against the outer wall of the snap-fit ​​connector 4.

[0048] See Figure 4 , Figure 5 and Figure 6 The mounting cavity 5 has several snap-fit ​​grooves 51 along its inner sidewall. There are three snap-fit ​​grooves 51, each corresponding to a snap-fit ​​part 41. The extension direction of each snap-fit ​​groove 51 corresponds to the rotation direction of the snap-fit ​​part 41, allowing the snap-fit ​​part 41 to be guided and inserted along the corresponding snap-fit ​​groove 51. The snap-fit ​​groove 51 near the sidewall of the mounting cavity 5 includes a guide surface 81, a guide surface 82, and abutment surface 83. One end of the guide surface 81 smoothly transitions to the inner wall of the mounting cavity 5, and has pre-cuts 13 distributed along the insertion direction of the snap-fit ​​part 41. The guide surface 82 is connected to the guide surface 81 and the abutment surface 83 on both sides. 3. A snap-fit ​​protrusion 62 is provided on the second guide surface 82. The two opposite side walls of the snap-fit ​​protrusion 62 have inclined guide surfaces 12. The inclination angle of the abutment surface 83 is greater than that of the first guide surface 81 and the second guide surface 82. It is located on the side end face opposite to the snap-fit ​​groove 51 and the first cut 13. The abutment surface 8 is adapted to the side wall of the snap-fit ​​part 41. The snap-fit ​​part 41 has a snap-fit ​​groove 61, which is located at the end of the snap-fit ​​part 41 away from the rotation axis of the rotating sleeve 2. When the snap-fit ​​groove 61 and the snap-fit ​​protrusion 62 are engaged, the snap-fit ​​part 41 abuts against the abutment surface 8. Alternatively, each snap-fit ​​groove 51 can be through in the direction away from the positioning cavity 7.

[0049] See Figure 7 A clamping space 14 is left between the rotating sleeve 2 and the snap-fit ​​connector 4. A limiting part 15 is formed between the snap-fit ​​groove 51 and the positioning cavity 7. The thickness of the limiting part 15 is adapted to the spatial span of the clamping space 14. The limiting part 15 is embedded in the clamping space 14. The end face of the rotating sleeve 2 near the clamping space 14 is in contact with the upper end face of the limiting part 15, and the end face of the snap-fit ​​connector 4 near the clamping space 14 is in contact with the side wall of the limiting part 15 located in the snap-fit ​​groove 51, so as to limit the wiping brush 3 from swinging up and down along the axis after installation.

[0050] Align the positioning cavity 7 and mounting cavity 5 of the scrubbing brush 3 with the snap-fit ​​connector 4 of the rotating sleeve 2, and axially insert the mounting cavity 5 into the snap-fit ​​connector 4. At this time, the snap-fit ​​connector 4 first passes through the positioning cavity 7, and the end of the rotating sleeve 2 is then embedded in the positioning cavity 7. If it is necessary to rotate the scrubbing brush 3 and the rotating sleeve 2 relative to each other, the scrubbing brush 3 can be rotated in the first direction by operating it alone, or the rotating sleeve 2 can be rotated in the opposite second direction by operating it. In this embodiment, the first direction is clockwise and the second direction is counterclockwise. The three snap-fit ​​parts 41 of the snap-fit ​​connector 4 slide into the corresponding snap-fit ​​grooves 51 along the tangential direction of the mounting cavity 5, and the snap-fit ​​protrusions... The inclined guide surface 12 guides and presses the snap-fit ​​part 41. The snap-fit ​​part 41 uses its plastic material and the elastic deformation of the internal cavity 9 to make the snap-fit ​​groove 61 fit into the snap-fit ​​protrusion 62, automatically locking and unlocking. The snap-fit ​​part 41 approaches the abutment surface 8 on one side along the rotation direction. The brush head drive 1 drives the rotating sleeve 2 to rotate in the second direction. The snap-fit ​​part 41 pushes against the abutment surface 8 to realize the transmission of rotational force, driving the scrubbing brush 3 to rotate synchronously. Alternatively, the first direction can be set to counterclockwise and the second direction can be clockwise.

[0051] The specific work process of this plan is as follows:

[0052] This technical solution involves axially inserting the mounting cavity 5 of the scrubbing brush 3 into the snap-fit ​​connector 4 of the rotating sleeve 2, and then rotating the scrubbing brush 3 and the rotating sleeve 2 relative to each other. This allows each snap-fit ​​part 41 to be inserted one by one into the snap-fit ​​groove 51 along the corresponding tangential direction inside the mounting cavity 5, until the snap-fit ​​protrusion 62 and the snap-fit ​​groove 61 are automatically engaged and locked. This simple operation of insertion and rotation simplifies the disassembly and assembly steps of the scrubbing brush 3, while ensuring a firm and reliable connection during operation, effective power transmission, and more convenient replacement.

[0053] See Figure 1 A scrubber includes a scrubber body 10, which is long and rod-shaped and usually has a handle, a soap dish, and a battery pack. The battery pack is installed at the rear end of the scrubber body 10 and is used to provide power to a brush head drive unit 1. The brush head drive unit 1 is installed at the front end of the scrubber body 10.

[0054] The foregoing has shown and described the basic principles, main features, and advantages of this technical solution. Those skilled in the art should understand that this technical solution is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this technical solution. Various changes and modifications can be made to this technical solution without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed technical solution. The scope of protection of this technical solution is defined by the appended claims and their equivalents.

Claims

1. A scrubbing brush device, characterized in that, include: Brush head driver (1); A rotating sleeve (2) is disposed on the output shaft of the brush head drive (1) and the rotating sleeve (2) is rotatably disposed relative to the brush head drive (1). The rotating sleeve (2) is provided with a snap-fit ​​connector (4), and the snap-fit ​​connector (4) has at least two snap-fit ​​portions (41) distributed circumferentially. A scrubbing brush (3) is detachably connected to the rotating sleeve (2). The scrubbing brush (3) has a mounting cavity (5). The mounting cavity (5) has a plurality of snap-fit ​​grooves (51) along the inner sidewall of the cavity. The extension direction of each snap-fit ​​groove (51) corresponds to the rotation direction of the snap-fit ​​connector (4). The snap-fit ​​grooves (51) and the snap-fit ​​parts (41) are arranged one-to-one. The end of the snap-fit ​​part (41) is recessed with a snap-fit ​​groove (61), and the side wall of the snap-fit ​​groove (51) is correspondingly protruding with a snap-fit ​​protrusion (62). After the snap-fit ​​connector (4) is axially embedded into the mounting cavity (5), the scrubbing brush (3) and the rotating sleeve (2) rotate relative to each other. The snap-fit ​​part (41) is guided to cut in along the corresponding snap-fit ​​groove (51), so that the snap-fit ​​protrusion (62) fits into the snap-fit ​​groove (61). The brush head drive (1) drives the snap-fit ​​connector (4) to rotate, and the snap-fit ​​connector (4) abuts against the inner wall of the snap-fit ​​groove (51) to push the scrubbing brush (3) to rotate synchronously.

2. The scrubbing brush device according to claim 1, characterized in that: The snap-fit ​​groove (51) near the mounting cavity (5) includes a guide surface one (81), a guide surface two (82), and an abutment surface (83) in sequence. The snap-fit ​​protrusion (62) is located on the guide surface two (82). The guide surface one (81) has a pre-cut along the cutting direction of the snap-fit ​​part (41). The side end face of the snap-fit ​​groove (51) opposite to the pre-cut is the abutment surface (83). The abutment surface (8) is adapted to the side wall of the snap-fit ​​part (41).

3. The scrubbing brush device according to claim 1, characterized in that: The scrubbing brush (3) has a positioning cavity (7) which is connected to the mounting cavity (5) and is used for the end of the rotating sleeve (2) to be inserted.

4. A scrubbing brush device according to claim 1, characterized in that: A clamping space (14) is left between the rotating sleeve (2) and the snap-fit ​​connector (4). A limiting part (15) is formed between the snap-fit ​​groove (51) and the positioning cavity (7). The limiting part (15) is embedded in the clamping space (14). The end face of the rotating sleeve (2) near the clamping space (14) is in contact with the upper end face of the limiting part (15). The end face of the snap-fit ​​connector (4) near the clamping space (14) is in contact with the side wall of the limiting part (15) located in the snap-fit ​​groove (51).

5. A scrubbing brush device according to claim 3, characterized in that: The positioning cavity (7) has several positioning protrusions (11) protruding circumferentially along its inner wall.

6. A scrubbing brush device according to claim 1, characterized in that: The snap-fit ​​protrusion (62) has a guide surface (12) along the opposite sidewall.

7. A scrubbing brush device according to claim 1, characterized in that: The inner side of the snap-fit ​​part (41) has a cavity (9).

8. A scrubbing brush device according to claim 1, characterized in that: The snap-fit ​​connector (4) has three snap-fit ​​parts (41), the number of snap-fit ​​grooves (51) is the same as the number of snap-fit ​​parts (41), and the three snap-fit ​​parts (41) are arranged in a triangular pattern.

9. A scrubbing device, comprising a scrubbing device body (10), characterized in that: It also includes a scrubbing brush device according to any one of claims 1 to 8, wherein the front end of the scrubbing body (10) is hinged to the brush head drive member (1).

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