Cleaning equipment and floor brush components

Abstract

This disclosure relates to a cleaning device and a floor brush assembly. The cleaning device includes a floor brush assembly comprising: a floor brush housing; a roller brush rotatably connected to the floor brush housing and configured to clean a work surface; and a scraper mechanism including a base and a scraper hinged to the base. The scraper mechanism is configured to have a first position and a second position relative to the floor brush housing. In the first position, the scraper is configured to move relative to the base to disengage from the roller brush; in the second position, the scraper is configured to move relative to the base to engage with the roller brush. The cleaning device of this disclosure reduces the resistance generated by the roller brush on the scraper mechanism during installation, making the installation and disassembly process simple and labor-saving.

Description

Technical Field

[0001] This disclosure relates to the field of cleaning equipment, and particularly to a cleaning device; this disclosure also relates to a floor brush assembly. Background Technology

[0002] With the development of social productivity, people's living standards have been continuously improving. With their material needs met, people have begun to use various tools to reduce their workload and improve the quality of their home life, leading to the emergence of household cleaning equipment.

[0003] Among numerous household cleaning appliances, floor cleaning machines, which combine vacuuming and water extraction capabilities, have gained popularity among consumers due to their powerful floor cleaning abilities. To meet the ever-increasing demands of users, the technology incorporated into floor cleaning machines is constantly being updated and iterated. One of the key components determining the cleaning performance of a floor cleaning machine is the cleaning element; its cleaning performance directly determines the overall cleaning performance of the machine.

[0004] Cleaning components are parts that need to be disassembled for cleaning or replacement periodically. Most existing cleaning components are fixed to the cleaning machine using methods such as magnetic attachment, interference fit, or snap-fit. To reduce the size of the machine, their internal space is compactly arranged. This inadvertently increases the difficulty of disassembly for users, making the entire disassembly process time-consuming and laborious, significantly impacting the user experience. Summary of the Invention

[0005] This disclosure provides a cleaning device and a floor brush assembly to address the problems existing in the prior art.

[0006] According to a first aspect of this disclosure, a cleaning device is provided, the cleaning device including a floor brush assembly, the floor brush assembly comprising:

[0007] Floor brush housing;

[0008] A roller brush, rotatably connected to the floor brush housing, and configured to clean a work surface;

[0009] A scraper mechanism, comprising a base and a scraper hinged to the base; the scraper mechanism is configured to have a first position and a second position relative to the floor brush housing;

[0010] When in the first position, the scraper is configured to move relative to the base until it disengages from the roller brush;

[0011] When in the second position, the scraper is configured to move relative to the base to engage with the roller brush.

[0012] In one embodiment of this disclosure, the roller brush is rotatably connected to the floor brush housing; the roller brush and the floor brush housing form a space for the scraper mechanism to extend into.

[0013] In one embodiment of this disclosure, the cleaning device includes a roller brush cover detachably connected to the floor brush housing, and the scraper mechanism is disposed on the roller brush cover;

[0014] When in the first position, the roller brush cover is detached from the floor brush housing; when in the second position, the roller brush cover is assembled with the floor brush housing.

[0015] In one embodiment of this disclosure, the scraper is hinged to the base by an elastic device; when in a first position, the scraper is configured to move under the force of the elastic device until it disengages from the roller brush.

[0016] In one embodiment of this disclosure, a triggering part is provided on the floor brush housing; when the scraper mechanism moves to the second position, the scraper is configured to move to contact and engage with the roller brush after being subjected to the force of the triggering part and overcoming the elastic force of the elastic device.

[0017] In one embodiment of this disclosure, the scraper mechanism is configured to move vertically to a second position; the trigger portion is configured to have a gradually downward inclined surface from the side away from the roller brush to the side adjacent to the roller brush; the scraper mechanism is configured such that during the movement to the second position, the side of the scraper away from the roller brush is configured to contact the inclined surface to push the scraper to move in the direction of the roller brush.

[0018] In one embodiment of this disclosure, the triggering part is an elastic triggering part, and at least two elastic triggering parts are provided, with the at least two elastic triggering parts distributed in the axial direction of the roller brush.

[0019] In one embodiment of this disclosure, the scraper is hinged to the base by an elastic device; when in the second position, the scraper is configured to move under the force of the elastic device to contact and engage with the roller brush.

[0020] In one embodiment of this disclosure, a switching assembly is also included, the switching assembly being configured to drive the scraper to move against the force of the elastic device until it disengages from the roller brush.

[0021] In one embodiment of this disclosure, the switching assembly includes a latch that is guided and engaged on the roller brush cover, the latch being configured to move between an unlocked position and a locked position; the latch is configured to drive the scraper to rotate relative to the base during movement from the locked position to the unlocked position, thereby disengaging the scraper from the roller brush.

[0022] In one embodiment of this disclosure, the latch is configured to move along the axial direction of the roller brush on the roller brush cover plate; hinge brackets are provided at opposite ends of the scraper and hinged to the base; the hinge brackets are provided with mating parts for engaging with the latch; the mating parts are gradually inclined to the rearward direction in the extension direction of the roller brush.

[0023] In one embodiment of this disclosure, the latch is configured to engage with the floor brush housing when moved to the locked position, and to disengage from the floor brush housing when moved to the unlocked position.

[0024] In one embodiment of this disclosure, a water spray plate is provided on the base, and the water spray plate is provided with water spray holes that spray water toward the roller brush.

[0025] According to a second aspect of this disclosure, a floor brush assembly is provided, the floor brush assembly comprising:

[0026] Floor brush housing;

[0027] A roller brush, rotatably connected to the floor brush housing, and configured to clean a work surface;

[0028] A scraper mechanism, comprising a base and a scraper hinged to the base; the scraper mechanism is configured to have a first position and a second position relative to the floor brush housing;

[0029] When in the first position, the scraper is configured to rotate relative to the base until it disengages from the roller brush;

[0030] When in the second position, the scraper is configured to rotate relative to the base to engage with the roller brush.

[0031] One beneficial effect of this disclosure is that the floor brush assembly on the cleaning equipment is provided with a scraper mechanism having a first position and a second position relative to the floor brush housing. During the installation of the scraper mechanism and the floor brush housing, the scraper is located away from the roller brush, which facilitates the installation of the scraper mechanism and the floor brush housing; after the scraper mechanism is installed in place, the scraper rotates to contact and engage with the roller brush, thereby reducing the resistance generated by the roller brush on the scraper mechanism during installation, making the installation and disassembly process simple and effortless.

[0032] The cleaning device disclosed herein not only reduces the resistance exerted by the roller brush on the scraper mechanism during installation, making the installation process smoother, but also ensures that the scraper mechanism always has an interference fit with the roller brush when the roller brush and scraper mechanism work together, thereby improving the cleaning efficiency of the roller brush and enhancing the user experience.

[0033] Other features and advantages of this disclosure will become clear from the following detailed description of exemplary embodiments with reference to the accompanying drawings. Attached Figure Description

[0034] The accompanying drawings, which are incorporated in and form a part of this specification, illustrate embodiments of the present disclosure and, together with their description, serve to explain the principles of the present disclosure.

[0035] Figure 1 This is a schematic diagram of the structure of a cleaning device provided in an embodiment of this disclosure;

[0036] Figure 2 This is a partial structural schematic diagram of a scraper mechanism provided in an embodiment of this disclosure;

[0037] Figure 3 This is a schematic diagram of the structure of the roller brush cover plate in the first position according to an embodiment of the present disclosure;

[0038] Figure 4 This is a schematic diagram of the structure of the roller brush cover plate in the second position according to an embodiment of the present disclosure;

[0039] Figure 5 This is a schematic diagram of the structure of the roller brush cover plate in the first position according to another embodiment of this disclosure;

[0040] Figure 6 This is a schematic diagram of the structure of the roller brush cover plate in the second position according to another embodiment of this disclosure;

[0041] Figure 7 yes Figure 5 A magnified view of a portion of the central structure;

[0042] Figure 8 This is an exploded view of a portion of the scraper mechanism provided in an embodiment of this disclosure;

[0043] Figure 9 This is a partial structural diagram of a scraper mechanism provided in an embodiment of the present disclosure;

[0044] Figure 10 This is a partial structural diagram of a scraper mechanism at another angle provided in one embodiment of the present disclosure;

[0045] Figure 11 yes Figure 10 A magnified view of a portion of the central structure;

[0046] Figure 12 This is a partial structural cross-sectional view of the brush cover plate in the first position according to another embodiment of this disclosure;

[0047] Figure 13This is a partial structural cross-sectional view of the brush cover plate in the second position according to another embodiment of this disclosure.

[0048] Figures 1 to 13 The correspondence between the component names and the reference numerals in the figures is as follows:

[0049] 1. Floor brush assembly; 11. Roller brush cover; 111. Buckle; 12. Floor brush housing; 13. Trigger unit; 14. Roller brush; 15. Scraper mechanism; 151. Base; 152. Spray plate; 153. Spray hole; 154. Scraper; 155. Stop component; 156. Hinge bracket; 157. Fitting part; 16. Elastic device; 17. Switch assembly; 171. Lock; 172. Locking spring; 173. Trigger rod. Detailed Implementation

[0050] Various exemplary embodiments of the present disclosure will now be described in detail with reference to the accompanying drawings. It should be noted that, unless otherwise specifically stated, the relative arrangement, numerical expressions, and values ​​of the components and steps set forth in these embodiments do not limit the scope of the present disclosure.

[0051] The following description of at least one exemplary embodiment is merely illustrative and is in no way intended to limit this disclosure or its application or use.

[0052] Techniques, methods, and equipment known to those skilled in the art may not be discussed in detail, but where appropriate, such techniques, methods, and equipment should be considered part of the specification.

[0053] It should be noted that similar labels and letters in the following figures indicate similar items; therefore, once an item is defined in one figure, it does not need to be discussed further in subsequent figures.

[0054] The specific embodiments of this disclosure are described below with reference to the accompanying drawings.

[0055] In this article, terms such as "up," "down," "front," "back," "left," and "right" are used only to indicate the relative positional relationship between related parts, rather than to define the absolute position of these related parts.

[0056] In this article, "first," "second," etc., are used only to distinguish one another, and not to indicate degree of importance, order, or prerequisite for each other.

[0057] In this document, terms such as “equal” and “same” are not strict mathematical and / or geometric limitations, but also include errors that are understandable to those skilled in the art and permissible in manufacturing or use.

[0058] This disclosure provides a cleaning device, which can be a handheld cleaning device, such as a handheld washer, handheld vacuum cleaner, handheld floor scrubber, or other handheld cleaning devices well known to those skilled in the art. It can also be a robotic vacuum cleaner, robotic mop, or a combined sweeping and mopping robot, used to clean work surfaces such as floors, sofas, and carpets. In an embodiment where the cleaning device is a handheld floor scrubber, the user can push the scrubber across the floor and use its brush assembly to clean the work surface.

[0059] The disclosed floor brush assembly includes a floor brush housing, a roller brush, and a scraper mechanism. The roller brush is rotatably connected to the floor brush housing, and its rotation axis is parallel to the working surface. During cleaning, the roller brush rotates to clean the working surface, such as a floor. The scraper mechanism is configured to have a first position and a second position relative to the floor brush housing. When the scraper mechanism is in the first position, the scraper blade is configured to move relative to the base until it disengages from the roller brush. With this configuration, during installation or removal of the scraper mechanism, the scraper blade is only configured to move relative to the base to engage with the roller brush when the scraper mechanism is in the second position, i.e., after the scraper mechanism is installed. As the scraper mechanism moves from the second position back to the first position, the scraper blade moves to a state of disengagement from the roller brush, i.e., it does not contact the roller brush, thus achieving effortless installation and removal.

[0060] During the cleaning process, the roller brush contacts the working surface, and the drive unit rotates the roller brush to clean the working surface. At the same time, the scraper mechanism in the second position is always in interference fit with the roller brush. The scraper can squeeze out the dirt attached to the surface of the roller brush, so that the cleaning equipment always has good cleaning performance.

[0061] The cleaning equipment disclosed herein, when the roller brush needs to be disassembled and replaced, ensures that the scraper mechanism moves from the second position to the first position, during which the scraper disengages from the roller brush. This avoids disassembly difficulties caused by a large interference fit between the scraper and the roller brush. Similarly, it avoids installation difficulties caused by contact between the scraper and the roller brush. The scraper only engages with the roller brush when the scraper mechanism reaches the second position. This allows the dirt adsorbed on the roller brush to be easily scraped off by the scraper during operation and sucked into the wastewater tank for storage, ensuring the cleaning effect of the equipment.

[0062] For ease of understanding, please refer to the following: Figures 1 to 13 The specific structure and working principle of the cleaning equipment disclosed herein will be described in detail with reference to two embodiments.

[0063] Example 1

[0064] For ease of explanation of the cleaning equipment disclosed herein, please refer to... Figure 1 The directions indicated are denoted as follows: the side of the cleaning equipment facing the user during operation is designated as the rear side, and the side facing away from the user is designated as the front side. The front and rear sides are based on the user's working state when using the cleaning equipment. Subsequent descriptions of the front and rear directions of the roller brush mechanism are also consistent with the front and rear directions of the cleaning equipment. This naming is only for the convenience of those skilled in the art to fully understand the content of this disclosure and does not impose any restrictions on it.

[0065] refer to Figure 1 This disclosure provides a cleaning device, which includes a body and a floor brush assembly 1 connected to the body. The floor brush assembly 1 is disposed at the bottom of the body and is configured to contact a work surface to clean the work surface. Specifically, the floor brush assembly 1 includes a floor brush housing 12, a roller brush 14 rotatably connected to the floor brush housing 12, and a scraper mechanism 15 having a first position and a second position relative to the floor brush housing 12.

[0066] In a specific embodiment of this disclosure, reference is made to Figure 5 and Figure 6 The cleaning equipment includes a roller brush cover 11 detachably connected to the floor brush housing 12. The floor brush housing 12 and the roller brush cover 11 cooperate with each other to form a space for the roller brush 14 to be placed therein. When the roller brush 14 needs to be replaced, the roller brush cover 11 needs to be removed from the floor brush housing 12; after the roller brush 14 is replaced, the roller brush cover 11 is then installed on the floor brush housing 12.

[0067] Therefore, in one specific embodiment of this disclosure, the scraper mechanism 15 is connected to the roller brush cover plate 11, so that the scraper mechanism 15 can be installed on or removed from the floor brush housing 12 along with the roller brush cover plate 11. That is, when the roller brush cover plate 11 is installed on the floor brush housing 12, the scraper mechanism 15 is configured to cooperate with the roller brush 14; when the roller brush cover plate 11 is removed from the floor brush housing 12, the scraper mechanism 15, together with the roller brush cover plate 11, detaches from the floor brush housing 12.

[0068] Specifically, refer to Figure 4 and Figure 6 The scraper mechanism 15 includes a base 151 and a scraper 154 hinged to the base 151. Figure 3 and Figure 5 When the scraper mechanism 15 is in the first position, the scraper 154 in the scraper mechanism 15 is configured to rotate relative to the base 151 to a state of disengagement from the roller brush 14. When the scraper mechanism 15 is in the second position, the scraper 154 is configured to rotate relative to the base 151 to contact and engage with the roller brush 14.

[0069] For details, please refer to Figure 2 The base 151 has downwardly extending connecting plates at both ends, and correspondingly, the scraper 154 has upwardly extending hinge brackets 156 at both ends. Both the connecting plates and the hinge brackets 156 have matching hinge holes. When assembling the base 151 and the scraper 154: first, align the connecting plates and hinge brackets 156 on the corresponding sides to align their hinge holes; then, insert the hinge shaft into the corresponding hinge hole. This achieves a hinged connection between the base 151 and the scraper 154. When an external force is applied to the scraper 154, the scraper 154 can rotate or swing relative to the base 151 around the hinge shaft.

[0070] Continue to refer to Figure 2 The scraper mechanism 15 also includes an elastic device 16, and the scraper 154 is configured to rotate away from the roller brush 14 under the elastic force of the elastic device 16. Figure 3 , Figure 5 The scraper 154 is positioned as shown in the diagram so that it does not contact the roller brush 14 during installation. Specifically, the elastic device 16 is a torsion spring, with one end connected to the hinge bracket 156 and the other end connected to the base 151. Under the torsional force of the torsion spring, the scraper 154 of the scraper mechanism 15 is positioned as shown in the diagram. Figure 3 The location shown.

[0071] refer to Figure 5 and Figure 6 A space is formed between the roller brush 14 and the front side of the floor brush housing 12 for the scraper mechanism 15 to extend into. That is, the scraper mechanism 15 is located in the gap between the roller brush 14 and the front side of the floor brush housing 12. When the scraper mechanism 15 moves to the second position, i.e., after being installed, the scraper 154 rotates forward to contact and engage with the roller brush 14. When the scraper mechanism 15 moves to the first position, i.e., after disengaging from the installation position, the scraper 154 can move away from the roller brush 14 under the force of the elastic device 16, thus disengaging from the roller brush 14.

[0072] In one embodiment of this disclosure, the scraper mechanism 15 is configured to move vertically to a second position. (See reference...) Figure 5 The front end face of the floor brush housing 12 is approximately vertical, and the gap between the roller brush 14 and the front end face of the floor brush housing 12 extends approximately in the vertical direction. Based on this, the scraper mechanism 15 moves vertically between the first position and the second position.

[0073] Continue to refer to Figure 5 A trigger part 13 is provided on the floor brush housing 12. The position of the trigger part 13 on the floor brush housing 12 is such that when the scraper mechanism 15 moves to the second position, the scraper 154 is configured to be subjected to the force of the trigger part 13 and move to contact and cooperate with the roller brush 14 after overcoming the elastic force of the elastic device 16.

[0074] In one specific embodiment of this disclosure, reference is made to Figure 7 The trigger portion 13 is configured to have a gradually downward sloping inclined surface from the side away from the roller brush 14 to the side adjacent to the roller brush 14.

[0075] refer to Figure 5 and Figure 6 When an external force is applied to the roller brush cover plate 11, causing it to drive the scraper mechanism 15 to move downwards in the vertical direction, the side of the scraper 154 away from the roller brush 14 contacts the upper end of the inclined surface of the trigger part 13. Under the squeezing force of the trigger part 13, the scraper 154 can overcome the elastic force of its elastic device 16 and move towards the roller brush 14. As the scraper mechanism 15 gradually moves towards its second position, since the trigger part 13 is an inclined surface, the trigger part 13 always applies this force to the scraper 154 to push the scraper 154 to rotate relative to the base 151 until it contacts the roller brush 14, until the scraper 154 reaches... Figure 4 , Figure 6 As shown in the diagram, the scraper 154 and the roller brush 14 are in an interference fit state. That is, the free end of the scraper 154 is inserted into the flexible structure such as the bristles of the roller brush 14. When the roller brush rotates, the scraper 154 can scrape off the sewage or debris on the roller brush 14 so that the suction pipe of the cleaning equipment can suck it into the sewage tank for storage.

[0076] When disassembling the roller brush cover 11, an upward external force is applied to the roller brush cover 11, which drives the scraper mechanism 15 from... Figure 6 The second position shown moves upward. During this process, the external force applied to the scraper 154 by the inclined surface of the trigger part 13 gradually decreases. Under the elastic force of the elastic device 16, the scraper 154 rotates in the opposite direction and gradually moves away from the roller brush 14 until it rotates to the second position. Figure 5 , Figure 7 When in the first position shown, completely detach from the roller brush 14, that is, the scraper 154 and the roller brush 14 are not in contact. Finally, remove the roller brush cover 11 from the floor brush housing 12.

[0077] In this embodiment, the scraper mechanism 15 has a scraper 154 hinged to its base 151. A trigger 13 on the brush housing 12 pushes the scraper 154, which is in the second position, to move until it is in an interference fit with the roller brush 14. Conversely, when disassembling the scraper mechanism 15, the scraper 154 rotates under the action of the elastic device 16 until it gradually disengages from the roller brush 14. Clearly, the resistance generated during the relative movement between the scraper 154 and the roller brush 14 is small when assembling and disassembling the scraper mechanism 15, saving time and effort in the process. Furthermore, it reduces the wear of the scraper 154 on the roller brush 14 to a certain extent, extending the service life of the roller brush 14.

[0078] It should be noted that in this embodiment, the scraper mechanism 15 is disposed on the roller brush cover plate 11, and when the scraper mechanism 15 is in the first position, such as Figure 7 As shown, the roller brush cover 11 and the floor brush housing 12 are detached. When the scraper mechanism 15 is in the second position, the roller brush cover 11 and the floor brush housing 12 are assembled together. This arrangement simplifies the structure of the floor brush assembly 1. When the scraper mechanism 15 is in the second position, the scraper mechanism 15 is locked in the second position by the force generated after the roller brush cover 11 and the floor brush housing 12 are assembled, so that it continuously squeezes and scrapes the sewage or dirt on the roller brush 14. Of course, the scraper mechanism 15 can also be connected to the floor brush housing 12 independently of the roller brush cover 11.

[0079] The cleaning equipment disclosed herein, during the installation of the roller brush cover 11, only when the roller brush cover 11 and the scraper mechanism 15 are in the second position, such as Figure 6 As shown, the scraper 154 will rotate to contact and engage with the roller brush 14 and remain in that position. When the scraper mechanism 15 disengages from the second position, the scraper 154 will rotate away from the roller brush 14 under the force of the elastic device 16, thus disengaging from the roller brush 14. This avoids the problems of high resistance and installation difficulties caused by the scraper 154 continuously contacting and engaging with the roller brush 14 during the disassembly and installation of the roller brush cover 11, thereby improving the user's disassembly and installation experience.

[0080] For ease of description, this disclosure defines a first position, which is not a fixed position; any position other than the second position can be understood as the first position. When the scraper mechanism 15 moves to the second position, the scraper 154 rotates to engage with the roller brush 14. When the scraper mechanism 15 disengages from the second position, the scraper 154 rotates until the roller brush 14 disengages. Compared with the method of fixing the scraper 154 to the floor brush housing 12 via a transmission, this reduces the installation difficulty of the roller brush 14 and also reduces the resistance between the scraper 154 and the roller brush 14 during installation.

[0081] Furthermore, in this embodiment, reference is made to Figure 7 The trigger part 13 is constructed as an inclined surface that gradually slopes downward from the side away from the roller brush 14 to the side adjacent to the roller brush 14. The inclined surface can make the scraper 154 more evenly stressed during rotation. That is, as the scraper mechanism 15 gradually moves downward, the inclined surface can gradually push the scraper 154 towards the roller brush 14, thus ensuring the smooth movement of the scraper mechanism 15.

[0082] In one embodiment of this disclosure, the triggering part 13 is an elastic triggering part, as shown in the reference. Figure 7The elastic trigger section is formed by bending a metal spring. The elastic trigger section may include a horizontal section, a vertical section, and an inclined section arranged in sequence. The horizontal and vertical sections are in contact with or abut against the brush housing 12, and the inclined section is constructed to gradually slope downward from the side away from the roller brush 14 to the side adjacent to the roller brush 14, forming the inclined surface mentioned above.

[0083] Because the elastic trigger part has elastic deformation capability, when it comes into contact with the scraper 154 and moves relative to it, it buffers the scraper 154 and avoids the two from rigidly contacting each other and causing great wear. In addition, to a certain extent, it can also avoid the problem of jamming caused by the two rigidly contacting each other during relative movement, which would prevent the scraper mechanism 15 from being disassembled.

[0084] Furthermore, when the roller brush 14 is in a relatively dry state, or when a new roller brush 14 is replaced, especially when the bristles are thick or in a dry state, the interference fit between it and the scraper 154 is relatively large. This will result in a large compressive force between the scraper 154 and the roller brush 14. Since the scraper 154 of this disclosure maintains contact with the roller brush 14 under the force of the elastic trigger part, if the interference fit between the roller brush 14 and the scraper 154 is large during the rotation of the roller brush 14, the action and reaction forces between the roller brush 14 and the scraper 154 can push the scraper 154 to move away from the roller brush 14. This gives the roller brush 14 and the scraper 154 a certain degree of self-adaptability, avoiding problems such as large wear and high rotational resistance of the roller brush 14 caused by a large interference fit between the scraper 154 and the roller brush 14. From another perspective, since the scraper 154 of this disclosure is kept in contact with the roller brush 14 under the action of the elastic triggering part, when the roller brush 14 wears out after long-term use, the elastic triggering part can push the scraper 154 to always keep in contact with the roller brush 14, so as to avoid the gap between the scraper 154 and the roller brush 14 due to wear.

[0085] In one embodiment of this disclosure, the elastic force F1 of the elastic trigger is greater than the elastic force F2 of the elastic device 16. Only in this way, when the scraper mechanism 15 moves from the first position to the second position, the scraper 154 can overcome the elastic force F2 of the elastic device 16 and rotate towards the roller brush 14 until it is in interference fit with the roller brush 14. Moreover, during the rotation of the roller brush 14, the scraper 154 is configured such that when the squeezing force F3 applied by the roller brush 14 and the elastic force F2 of the elastic device 16 are greater than the elastic force F1 of the elastic trigger, the scraper 154 moves away from the roller brush 14. This allows the scraper 154 to rotate in the opposite direction during the rotation of the roller brush 14 when the interference between the roller brush 14 and the scraper 154 is large, avoiding problems such as high rotational resistance and wear caused by a large interference.

[0086] refer to Figure 8 In this embodiment, the cleaning device of this disclosure is provided with at least two elastic triggering parts, which are distributed in the axial direction of the roller brush 14. In this embodiment, the scraper 154 adopts a strip-shaped structure, and the length of the scraper 154 is adapted to the length of the roller brush 14. In order to enable the entire scraper 154 to rotate synchronously and avoid the scraper 154 from rotating at different angles due to the length of the scraper 154, which would cause the scraper 154 to twist. Therefore, at least two elastic triggering parts are provided in the axial direction of the roller brush 14 to prevent twisting in the middle part or other positions of the scraper 154 that would cause asynchronous rotation. In one embodiment of this disclosure, the elastic triggering parts are provided in the two end regions in the axial direction of the roller brush 14. By driving the two ends to rotate, the scraper 154 can be driven to rotate synchronously.

[0087] refer to Figure 4 When the scraper mechanism 15 is in the second position and is interference-fitted with the roller brush 14, a stop member 155 is provided on the base 151 to limit the scraper 154 from continuing to move in the direction of the roller brush 14. After the scraper 154 rotates to the correct position, it engages with the stop member 155, thereby preventing the scraper 154 from rotating excessively and controlling the interference between the scraper 154 and the roller brush 14 to always be within a preset range.

[0088] The scraper 154 scrapes away sewage and foreign matter from the surface of the roller brush 14 by squeezing the roller brush 14. After long-term use, the bristles will gradually adhere to the surface of the roller brush 14. The stop member 155, to a certain extent, limits the interference range between the scraper 154 and the roller brush 14, ensuring that the interference between the scraper 154 and the bristles is always maintained at an appropriate distance. This allows the scraper 154 to always scrape off the dirt adsorbed on the bristles of the roller brush 14, so that the roller brush 14 can always be in a good clean state, and its water absorption and cleaning effects can be controlled.

[0089] In one embodiment of this disclosure, when the scraper mechanism 15 is in the second position, such as Figure 6 As shown, after the scraper mechanism 15 and the floor brush housing 12 are installed in place, the scraper 154 is configured in the front-to-back direction to extend along the normal direction of the contact position with the roller brush 14, thereby ensuring the interference fit between the scraper 154 and the roller brush 14. Simultaneously, the extension line of the scraper 154 passes through or is below the axis of the roller brush cross-section, as shown in the reference diagram. Figure 6When the equipment is working, the roller brush 14 rolls clockwise, applying an upward tangential force to the scraper 154, causing the scraper 14 to tend to rotate counterclockwise. If the scraper 154 is positioned higher than the roller brush 14, it rotates counterclockwise without resistance, reducing the interference fit between the scraper 154 and the roller brush 14, thus decreasing the scraping force. If the extension line of the scraper 154 passes through or is below the axis of the roller brush cross-section, the counterclockwise rotation of the scraper 154 will further increase the interference fit with the roller brush 14, increasing the scraping force.

[0090] In the above embodiments, the scraper 154 is hinged in the base 151. In other embodiments of this disclosure, based on the above disclosure, the scraper 154 can also translate relative to the base 151. That is, when the scraper mechanism 15 is in the second position, the scraper 154 is configured to translate relative to the base 151 to contact and engage with the roller brush 14; when the scraper mechanism 15 is disengaged from the second position, the scraper 154 is configured to translate relative to the base 151 to disengage from the roller brush 14. The scraper 154 and the base 151 can adopt translational structures well known to those skilled in the art, which will not be specifically described herein.

[0091] refer to Figure 2 A water spray plate 152 is provided on the base 151, and the water spray plate 152 has water spray holes 153 for spraying water onto the roller brush 14. During use, the water spray holes 153 on the water spray plate 152 can replenish water to the roller brush 14, enabling the roller brush 14 to perform wet mopping during the cleaning process and improving the cleaning performance of the cleaning equipment. When the cleaning equipment performs self-cleaning, the water spray plate 152 and water spray holes 153 can rinse the roller brush 14 to improve the cleanliness of the roller brush 14.

[0092] In one specific embodiment of this disclosure, the spray coverage of the spray holes 153 on the spray plate 152 is determined by the length that can cover the axial direction of the roller brush 14. Thus, with the rotation of the roller brush 14, water can be sprayed evenly on the outer surface of the roller brush 14.

[0093] The water spray plate 152 and scraper 154 of this disclosure both need to have a mating relationship with the roller brush 14. That is, the scraper 154 needs to be arranged adjacent to the roller brush 14 to make contact and fit with the roller brush 14; the water spray plate 152 needs to be arranged adjacent to the roller brush 14 so that the water spray holes 153 on the water spray plate 152 can spray water onto the roller brush 14. Based on this, the scraper 154 and water spray plate 152 of this disclosure are both arranged on the base 151, which not only ensures the function of each component, but also improves the compactness between the various structures, which is conducive to the miniaturization of the equipment.

[0094] Example 2

[0095] Compared with Embodiment 1, the main difference of Embodiment 2 lies in the driving mechanism and principle that drives the scraper 154 to rotate relative to the base 151 when the scraper mechanism 15 moves from the first position to the second position. The following will explain this in conjunction with... Figures 8 to 13 The differences are only described here. For the same parts, those skilled in the art can fully implement them as described in Embodiment 1, and will not repeat them here.

[0096] refer to Figure 8 In this embodiment, the cleaning device further includes a switch assembly 17, which includes two latches 171 arranged sequentially at intervals along the axial direction of the roller brush 14, and the two latches 171 are symmetrically arranged with respect to the center of the roller brush cover plate 11. The latches 171 are guided and fitted onto the roller brush cover plate 11, and the latches 171 are configured to move relative to the roller brush cover plate 11 between a locked position and an unlocked position. When the latches 171 are in the locked position, the roller brush cover plate 11 is locked to the floor brush housing 12 by the latches 171, that is, the roller brush cover plate 11 is installed on the floor brush housing 12; when the latches 171 are in the unlocked position, the roller brush cover plate 11 is unlocked from the floor brush housing 12, and the roller brush cover plate 11 can be removed from the floor brush housing 12.

[0097] Continue to refer to Figure 8 The latch 171 has a latch 111 that can be inserted into a corresponding slot in the brush housing 12. The latch 171 is also provided with a drive unit. The latch 171 is located between the brush housing 12 and the roller brush cover plate 11. The drive unit extends from the drive hole of the roller brush cover plate 11. A locking spring 172 is provided between the latch 171 and the roller brush cover plate 11. The latch 171 is configured such that, under the action of the locking spring 172, its latch 111 extends from the roller brush cover plate 11 and engages with the brush housing 12, thereby locking the roller brush cover plate 11 onto the brush housing 12. Conversely, when an external force opposite to the elastic force of the locking spring 172 is applied to the latch 171, the latch 171 overcomes the elastic force of the locking spring 172 and moves relative to the roller brush cover plate 11 until its latch 111 disengages from the slot on the brush housing 12. At this time, the roller brush cover plate 11 can be removed from the brush housing 12.

[0098] As described in Embodiment 1, both the left and right ends of the base 151 have downwardly extending connecting plates, see reference. Figure 9 and Figure 10 Correspondingly, both the left and right ends of the scraper 154 have upwardly extending hinge brackets 156. Both the connecting plate and the hinge brackets 156 have matching hinge holes. When assembling the base 151 and the scraper 154: first, align the connecting plate and the hinge brackets 156 on the corresponding sides to align their hinge holes; then, insert the hinge shaft into the corresponding hinge hole. This achieves a hinged connection between the base 151 and the scraper 154. When an external force is applied to the scraper 154, the scraper 154 can rotate relative to the base 151 around the hinge shaft.

[0099] The scraper mechanism 15 also includes an elastic device 16. Specifically, the elastic device 16 is a torsion spring, one end of which is connected to the hinge bracket 156, and the other end is connected to the base 151. In the second position, the scraper 154 is configured to move under the force of the elastic device 16 to engage with the roller brush 14. That is, in its natural state, the scraper 154 is configured to rotate in the direction of the roller brush 14 under the force of the elastic device 16 to engage with the roller brush 14.

[0100] The switch assembly 17 is configured to drive the scraper 154 to move against the force of the elastic device 16 until it disengages from the roller brush 14. Figure 11 As shown, the latch 171 also includes a trigger rod 173, which is a cylindrical rod. Correspondingly, the hinge bracket 156 is provided with a mating part 157 for engaging with the trigger rod 173 of the latch 171, and the mating part 157 is configured to gradually slope backward in the extending direction of the roller brush 14. That is, the hinge bracket 156 has an inclined surface that slopes backward.

[0101] When the latch 171 is in the locked position, the trigger rod 173 of the latch 171 abuts against the inclined surface of the mating part 157, such as... Figure 13 As shown, under the torsion of the torsion spring, the scraper 154 of the scraper mechanism 15 is located at... Figure 13 The position shown is such that the scraper 154 and the roller brush 14 are interference-fitted so that the scraper 154 can squeeze and scrape away the dirt on the roller brush 14 during its rotation.

[0102] like Figure 12 As shown, when the latch 171 is subjected to external force and moves from the locked position to the unlocked position against the elastic force of the locking spring 172, the trigger rod 173 of the latch 171 moves with the latch 171 to the unlocked position, causing the trigger rod 173 to push the inclined surface of the mating part 157, thereby gradually applying a torque opposite to the elastic force of the torsion spring to the scraper 154, causing it to overcome the elastic force of the torsion spring and rotate clockwise. Figure 12 As shown in the figure, the scraper 154 is disengaged from the roller brush 14, meaning it is no longer in contact with the roller brush 14. At this point, the user can remove the roller brush cover 11, which is equipped with the scraper mechanism 15, from the floor brush housing 12.

[0103] Obviously, the cleaning device of this embodiment, by means of the switch assembly 17 on the roller brush cover plate 11, when the roller brush 14 needs to be replaced, can move the switch assembly 17 from the locked position to the unlocked position, which not only puts the roller brush cover plate 11 and the floor brush housing 12 in an open state, but also the latch 171 will push the scraper 154 of the scraper mechanism 15 to rotate relative to the roller brush 14, thereby causing the scraper 154 to disengage from the roller brush 14, so that the roller brush cover plate 11 can be removed from the floor brush housing 12.

[0104] After the roller brush 14 has been replaced, during the assembly of the roller brush cover 11, first move the latch 171 from the locked position to the unlocked position, referring to... Figure 12 The trigger rod 173 of the latch 171 moves towards the unlocked position as the latch 171 moves, causing the trigger rod 173 to push the inclined surface of the mating part 157, thereby gradually applying a torque opposite to the elastic force of the torsion spring to the scraper 154, causing it to overcome the elastic force of the torsion spring and rotate clockwise. Figure 12 The position shown indicates that the scraper 154 has been rotated away from the roller brush 14. At this point, the roller brush cover 11 can be installed on the floor brush housing 12. Once installed, release the latch 171. Figure 13 As shown, this allows the scraper 154 to rotate under the action of the elastic device 16 until it contacts and engages with the roller brush 14. In addition, when the locking buckle 171 is released, the latch 111 on the locking buckle 171 will also engage with the corresponding position on the floor brush housing 12, thereby realizing the assembly of the roller brush cover 11 and the floor brush housing 12.

[0105] In the cleaning device of this disclosure, the roller brush 14 is pre-pressed onto the roller brush 14 under the force of the elastic device 16, and the roller brush 14 is in contact with the elastic device 16. When the roller brush 14 is in a relatively dry state, or when a new roller brush 14 is replaced, especially when the bristles are thick or in a dry state, the interference between it and the scraper 154 is relatively large, which will result in a large squeezing force between the scraper 154 and the roller brush 14. Since the scraper 154 of this disclosure is pre-pressed onto the roller brush 14 by the elastic device 16, when the roller brush 14 rotates, if the interference between the roller brush 14 and the scraper 154 is large, the action and reaction forces between the roller brush 14 and the scraper 154 can push the scraper 154 to move away from the roller brush 14. This gives the roller brush 14 and the scraper 154 a certain degree of self-adaptability, avoiding problems such as large wear and high rotational resistance of the roller brush 14 caused by the large interference between the scraper 154 and the roller brush 14. From another perspective, since the scraper 154 of this disclosure is kept in contact with the roller brush 14 under the force of the elastic device 16, when the roller brush 14 wears out after long-term use, the elastic device 16 can push the scraper 154 to always keep in contact with the roller brush 14, so as to avoid the gap between the scraper 154 and the roller brush 14 due to wear.

[0106] In addition, the cleaning device disclosed herein not only enables the disassembly and assembly of the roller brush cover plate 11 and the floor brush housing 12 through the locking buckle 171, but also links the movement of the locking buckle 171 with the scraper 154, so that the scraper 154 can rotate to a state of disengagement from the roller brush 14 during disassembly and assembly. This avoids the problems of high disassembly and assembly resistance, difficulty in disassembly and assembly, and poor customer experience caused by the scraper 154 always being in contact with the roller brush 14 during the traditional disassembly and assembly process.

[0107] In addition, refer to Figure 8 In this embodiment, the two latches 171 are symmetrically arranged with respect to the center of the roller brush cover 11, where the center of the roller brush cover 11 refers to its center along the axial length of the roller brush 14. Based on this, the two latches 171 move in opposite directions between the unlocked and locked positions. When moving from the locked position to the unlocked position, the two latches 171 move closer to each other; conversely, when moving from the unlocked position to the locked position, the two latches 171 move further away from each other. Furthermore, the maximum distance between the two latches 171 is approximately within the range that can be gripped by a person's thumb and forefinger (or index finger). Thus, when the user disassembles or assembles the roller brush cover 11, they only need to insert their thumb into the driving part of one latch 171 and their forefinger into the driving part of the other latch 171, applying force accordingly to easily and effortlessly complete the disassembly and assembly process with one hand.

[0108] In one embodiment of this disclosure, reference is made to Figures 8 to 10 There are two latches 111, located on opposite sides of the two locking latches 171. The lower end face of each latch 111 is constructed as an inclined surface, and a corresponding position on the floor brush housing 12 is constructed as a mating surface that engages with this inclined surface. This allows the user to apply downward pressure without applying axial force; the inclined surface, under the pressure of the mating surface of the floor brush housing 12, will still cause the locking latches 171 to move axially, thus improving the user experience.

[0109] One embodiment of this disclosure also provides a floor brush assembly 1, which includes a floor brush housing 12, a roller brush 14 rotatably connected to the floor brush housing 12 and configured for cleaning a work surface; and a scraper mechanism 15, which includes a base 151 and a scraper 154 hinged to the base 151. The scraper mechanism 15 is configured to have a first position and a second position relative to the floor brush housing 12. In the first position, the scraper 154 is configured to rotate relative to the base 151 to disengage from the roller brush 14; and in the second position, the scraper 154 is configured to rotate relative to the base 151 to engage with the roller brush 14.

[0110] The composition and connection relationship of the floor brush component 1 in this embodiment are exactly the same as those of the floor brush component 1 mentioned above, and the docking method with the cleaning equipment is also exactly the same. Those skilled in the art can undoubtedly deduce the composition and usage of the floor brush component 1 in this embodiment based on the description above, and will not be described in detail here.

[0111] Application Scenario 1

[0112] The cleaning equipment disclosed herein is a handheld floor scrubber. For example... Figure 1 As shown, when using this floor scrubber for cleaning, the user can move the floor scrubber on the ground and use the floor brush assembly 1 to clean the floor to be cleaned.

[0113] like Figure 5 As shown, when the roller brush 14 needs to be replaced, the roller brush cover 11 is first removed from the floor brush housing 12. As the roller brush cover 11 is removed from the floor brush housing 12, the scraper mechanism 15 moves away from the roller brush 14 under the action of the elastic device 16, so that the scraper 154 is separated from the roller brush 14, avoiding the large disassembly resistance caused by the continuous contact between the scraper 154 and the roller brush 14. At this time, the roller brush cover 11 can be easily removed from the floor brush housing 12.

[0114] After replacing the roller brush 14, the user needs to assemble the roller brush cover 11 onto the floor brush housing 12. During assembly, the scraper 154 is held away from the roller brush 14 by the elastic device 16. The user can then easily install the roller brush cover 11 onto the floor brush housing 12 and insert the scraper mechanism 15 into the gap between the roller brush 14 and the floor brush housing 12. When the scraper mechanism 15 extends to the point where the side of the scraper 154 away from the roller brush 14 contacts the elastic trigger 13, the elastic trigger 13 pushes the scraper 154 to rotate closer to the roller brush 14 until the scraper 154 contacts and engages with the roller brush 14. Figure 6 As shown, the roller brush cover 11 is now installed in place and fixed together with the floor brush housing 12.

[0115] In this cleaning device, the scraper 154 only maintains contact with the roller brush 14 after the roller brush cover 11 is installed in place. When disengaged, the scraper 154 disengages from the roller brush 14, which facilitates the installation of the roller brush cover 11 and the scraper 154. Compared to conventional installation structures where the scraper 154 is in continuous contact with the roller brush 14, this reduces installation resistance and improves the user experience. Furthermore, since the scraper 154 of this disclosure contacts the roller brush 14 under the action of the elastic trigger 13, when the force between the roller brush 14 and the scraper 154 is large during rotation, it can push the scraper 154 away from the roller brush 14, thereby reducing the rotational resistance of the roller brush 14, preventing excessive wear of the roller brush 14, and extending its service life.

[0116] Application Scenario 2

[0117] The cleaning equipment disclosed herein is a handheld floor scrubber. For example... Figure 1 As shown, when using this floor scrubber for cleaning, the user can move the floor scrubber on the ground and use the floor brush assembly 1 to clean the floor to be cleaned.

[0118] The scraper 154 of this disclosure is pre-pressed onto the roller brush 14 under the action of the elastic device 16, such as Figure 13 As shown, when the force between the roller brush 14 and the scraper 154 is large during rotation, the scraper 154 can be pushed to move away from the roller brush 14, thereby reducing the rotational resistance of the roller brush 14, avoiding excessive wear of the roller brush 14, and improving the service life of the roller brush 14.

[0119] When it is necessary to replace the roller brush 14, first remove the roller brush cover 11 from the floor brush housing 12. At this time, the user can move the latch 171 from the locked position to the unlocked position, as shown below. Figure 12 As shown, during the movement, the latch 111 on the latch 171 disengages from the brush housing 12, unlocking the roller brush cover 11 from the brush housing 12. Additionally, during the movement of the latch 171, the trigger rod 173 on the latch 171 pushes the inclined surface of the mating part 157, thereby gradually applying a torque opposite to the elastic force of the torsion spring to the scraper 154, causing it to overcome the elastic force of the torsion spring and rotate clockwise. Figure 12 As shown in the figure, the scraper 154 is disengaged from the roller brush 14, meaning it is no longer in contact with the roller brush 14. At this point, the user can remove the roller brush cover 11, which is equipped with the scraper mechanism 15, from the floor brush housing 12.

[0120] After the roller brush 14 is replaced, during the assembly of the roller brush cover 11, the latch 171 is first moved from the locked position to the unlocked position. The trigger rod 173 of the latch 171 moves with the latch 171 to the unlocked position, pushing the inclined surface of the mating part 157. This gradually applies a torque to the scraper 154 that is opposite to the elastic force of the torsion spring, causing it to overcome the elastic force of the torsion spring and rotate clockwise. Figure 12 The position shown indicates that the scraper 154 is rotated away from the roller brush 14. At this point, the roller brush cover 11 can be installed on the floor brush housing 12. Once installed, the locking buckle 171 is released, allowing the scraper 154 to rotate under the action of the elastic device 16 until it contacts and engages with the roller brush 14. Furthermore, when the locking buckle 171 is released, the latch 111 on the locking buckle 171 will also engage with the corresponding position on the floor brush housing 12, thus achieving the assembly of the roller brush cover 11 and the floor brush housing 12.

[0121] The various embodiments of this disclosure have been described above. These descriptions are exemplary and not exhaustive, and are not limited to the disclosed embodiments. Many modifications and variations will be apparent to those skilled in the art without departing from the scope and spirit of the described embodiments. The terminology used herein is chosen to best explain the principles, practical application, or technical improvements to the embodiments in the market, or to enable others skilled in the art to understand the embodiments disclosed herein. The scope of this disclosure is defined by the appended claims.

Claims

1. A cleaning device, characterized in that, Includes a floor brush assembly, the floor brush assembly comprising: Floor brush housing (12); A roller brush (14) is rotatably connected to the floor brush housing (12) and is configured to clean the work surface; The scraper mechanism (15) includes a base (151) and a scraper (154) hinged to the base (151); the scraper mechanism (15) is configured to have a first position and a second position relative to the floor brush housing (12). When in the first position, the scraper (154) is configured to move relative to the base (151) until it disengages from the roller brush (14); When in the second position, the scraper (154) is configured to move relative to the base (151) to contact and engage with the roller brush (14); The scraper (154) is hinged to the base (151) by an elastic device (16); when in the first position, the scraper (154) is configured to move under the force of the elastic device (16) until it disengages from the roller brush (14); A trigger part (13) is provided on the floor brush housing (12); when the scraper mechanism (15) moves to the second position, the scraper (154) is configured to overcome the elastic force of the elastic device (16) and move to contact and cooperate with the roller brush (14) after being subjected to the force of the trigger part (13); The scraper mechanism (15) is configured to move vertically to a second position; the trigger part (13) is configured to have a gradually downward inclined surface from the side away from the roller brush (14) to the side adjacent to the roller brush (14); the scraper mechanism (15) is configured such that during the movement to the second position, the side of the scraper (154) away from the roller brush (14) is configured to contact the inclined surface to push the scraper (154) to move in the direction of the roller brush (14); The triggering part (13) is an elastic triggering part, and at least two elastic triggering parts are provided, with the at least two elastic triggering parts distributed in the axial direction of the roller brush (14).

2. The cleaning equipment according to claim 1, characterized in that, The roller brush (14) is rotatably connected to the floor brush housing (12); the roller brush (14) and the floor brush housing (12) form a space for the scraper mechanism (15) to extend into.

3. The cleaning equipment according to claim 1, characterized in that, The cleaning device includes a roller brush cover plate (11) detachably connected to the floor brush housing (12), and the scraper mechanism (15) is disposed on the roller brush cover plate (11); When in the first position, the roller brush cover (11) is detached from the floor brush housing (12); when in the second position, the roller brush cover (11) is assembled with the floor brush housing (12).

4. The cleaning equipment according to claim 3, characterized in that, The scraper (154) is hinged to the base (151) by an elastic device (16); when in the second position, the scraper (154) is configured to move under the force of the elastic device (16) to contact and engage with the roller brush (14).

5. The cleaning equipment according to claim 4, characterized in that, It also includes a switch assembly (17) configured to drive the scraper (154) to move against the force of the elastic device (16) to disengage from the roller brush (14).

6. The cleaning equipment according to claim 5, characterized in that, The switching assembly (17) includes a latch (171) that is guided to engage on the roller brush cover (11), the latch (171) being configured to move between an unlocked position and a locked position; the latch (171) being configured to drive the scraper (154) to rotate relative to the base (151) during the movement from the locked position to the unlocked position, so that the scraper (154) disengages from the roller brush (14).

7. The cleaning equipment according to claim 6, characterized in that, The latch (171) is configured to move along the axial direction of the roller brush (14) on the roller brush cover plate (11); the scraper (154) is provided with hinge brackets (156) at opposite ends, which are hinged to the base (151); the hinge brackets (156) are provided with mating parts (157) for engaging with the latch (171); the mating parts (157) are gradually inclined to the rearward direction in the extending direction of the roller brush (14).

8. The cleaning equipment according to claim 6, characterized in that, The latch (171) is configured to lock together with the floor brush housing (12) when moved to the locked position, and to disengage from the floor brush housing (12) when moved to the unlocked position.

9. The cleaning equipment according to any one of claims 1 to 8, characterized in that, A water spray plate (152) is provided on the base (151), and the water spray plate (152) is provided with water spray holes (153) for spraying water toward the roller brush (14).

10. A floor brush assembly, characterized in that, include: Floor brush housing (12); A roller brush (14) is rotatably connected to the floor brush housing (12) and is configured to clean the work surface; The scraper mechanism (15) includes a base (151) and a scraper (154) hinged to the base (151); the scraper mechanism (15) is configured to have a first position and a second position relative to the floor brush housing (12). When in the first position, the scraper (154) is configured to rotate relative to the base (151) until it disengages from the roller brush (14); When in the second position, the scraper (154) is configured to rotate relative to the base (151) to engage with the roller brush (14); The scraper (154) is hinged to the base (151) by an elastic device (16); when in the first position, the scraper (154) is configured to move under the force of the elastic device (16) until it disengages from the roller brush (14); A trigger part (13) is provided on the floor brush housing (12); when the scraper mechanism (15) moves to the second position, the scraper (154) is configured to overcome the elastic force of the elastic device (16) and move to contact and cooperate with the roller brush (14) after being subjected to the force of the trigger part (13); The scraper mechanism (15) is configured to move vertically to a second position; the trigger part (13) is configured to have a gradually downward inclined surface from the side away from the roller brush (14) to the side adjacent to the roller brush (14); the scraper mechanism (15) is configured such that during the movement to the second position, the side of the scraper (154) away from the roller brush (14) is configured to contact the inclined surface to push the scraper (154) to move in the direction of the roller brush (14); The triggering part (13) is an elastic triggering part, and at least two elastic triggering parts are provided, with the at least two elastic triggering parts distributed in the axial direction of the roller brush (14).

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