Floor brush of surface cleaning device

Abstract

The floor brush of the surface cleaning device comprises a floor brush shell and a roller brush unit, the roller brush unit comprises a cleaning roller and a handle assembly, the handle assembly is detachably connected with the cleaning roller, the cleaning roller is rotatably installed on the floor brush shell through the handle assembly, and the handle assembly comprises a side plate, a locking mechanism and a driving part. The locking mechanism is movably mounted on the cleaning roller to be locked or unlocked with the cleaning roller, the side plate is locked and mounted on the cleaning roller through the locking mechanism, and the driving part moves towards the interior of the cleaning roller under the action of external force and drives the locking mechanism to be unlocked with the cleaning roller, so that the handle assembly and the cleaning roller are in a separable state. According to the floor brush, the phenomena that when the roller brush unit is detached, the handle assembly is separated from the cleaning roller, and the cleaning roller is reserved on the floor brush shell are avoided, so that when the cleaning roller is cleaned, maintained or replaced after being detached, the roller brush unit can be integrally taken down from the floor brush shell firstly, and the cleaning roller is prevented from being left.

Description

Technical Field

[0001] The present application belongs to the technical field of cleaning equipment, and specifically relates to a floor brush of a surface cleaning device. Background Art

[0002] Common surface cleaning devices such as vacuum cleaners and floor scrubbers generally use floor brushes to clean the surface to be cleaned. The floor brush of the surface cleaning device includes a housing and a roller brush unit provided in the housing. The roller brush unit rolls up dust, debris, hair, etc. on the surface to be cleaned, and then the negative pressure suction unit sucks such dirt into the cleaning device for temporary storage. During use, in order to form a better negative pressure effect around the cleaning roller, side panels and other structures are provided around the cleaning roller to wrap the cleaning roller. After long-term use, a lot of hair will be entangled on the cleaning roller or the brush cloth outside the cleaning roller will be severely worn, affecting the cleaning effect. Therefore, the cleaning roller needs to be disassembled regularly to perform a comprehensive cleaning of the cleaning roller or to be replaced after disassembly.

[0003] If the roller brush unit is replaced as a consumable part, the replacement cost will increase and energy will be wasted. If the cleaning roller is replaced as a consumable part, how to conveniently separate the cleaning roller from other components in the roller brush unit becomes a technical problem that needs to be solved urgently.

[0004] Chinese patent document CN221469776 U discloses a cleaning device, including a device body and a roller brush assembly, the roller brush assembly including a handle and a roller brush, one end of the handle is connected to the device body, and the other end is detachably provided on the roller brush through a docking structure, so that the roller brush can rotate relative to the handle and the device body, the docking structure includes a connecting shaft provided on the handle bracket and a sleeve detachably provided on the roller brush, the outer periphery of the connecting shaft is provided with a groove along its circumferential direction, the sleeve is provided with a cutout and an elastic member, the cutout is provided on the wall surface of the sleeve along the radial direction of the sleeve, the elastic member is embedded in the cutout through one or more elastic arms, in the initial state, the elastic force of the elastic member can cause the elastic arm to partially protrude to engage with the groove of the connecting shaft, so that the roller brush is combined with the handle, in the process of separating the connecting shaft from the sleeve, the connecting shaft pushes the elastic arm to move toward the outside of the sleeve, so that the elastic member forms an expanded state, thereby causing the connecting shaft to be pulled outward from the sleeve, thereby realizing the separation of the handle and the roller brush. If the roller brush is replaced as a consumable part, after the handle is detached from the roller brush, the sleeve needs to be further detached from the roller brush to reduce replacement costs. This technical solution effectively solves the problem of separation between the roller brush and the handle, and reduces the cost of brush replacement, but it has certain defects: the locking method is achieved by cooperating between the elastic member and the groove of the shaft, and the locking force of the elastic member and the groove should not be too large. If the locking force is too large, when the handle and the roller brush are separated, the user needs to use a very large force to separate the handle from the roller brush, but the locking force of the elastic member and the groove should not be too small. Otherwise, when the user removes the roller brush assembly from the device body, the handle may be detached from the roller brush during the axial outward pulling of the roller brush assembly, while the roller brush remains on the device body, resulting in an error in the overall disassembly of the roller brush assembly from the device body, which reduces the user experience; furthermore, the sleeve is installed on the roller brush. Even if the handle is removed from the roller brush, in order to reduce the replacement cost, the sleeve needs to be further disassembled, which increases the disassembly and reassembly steps, and for the user, the multi-step disassembly and assembly process also increases the user's operating difficulty, which is not conducive to the user experience. Utility Model Content

[0005] The present application provides a floor brush for a surface cleaning device to solve the technical problem that the cleaning roller and the handle assembly in the roller brush unit of the existing surface cleaning device are difficult to disassemble and assemble, and the locking and fixing method of the cleaning roller and the handle assembly, as well as the locking and fixing method of the handle assembly and the floor brush housing result in the handle assembly being easily removed alone while the cleaning roller is retained on the floor brush housing when the roller brush unit is detached from the floor brush housing.

[0006] The technical solutions adopted in this application are:

[0007] A floor brush for a surface cleaning device comprises a floor brush housing and a roller brush unit, the roller brush unit comprising a cleaning roller and a handle assembly, the handle assembly being detachably connected to the cleaning roller, the cleaning roller being rotatably mounted on the floor brush housing through the handle assembly, the handle assembly comprising a side plate, a locking mechanism and a driving portion, the side plate being locked and mounted on the cleaning roller through the locking mechanism, the side plate being connected to the cleaning roller through the locking mechanism, the driving portion being moved into the cleaning roller by an external force and driving the locking mechanism to unlock the cleaning roller, so that the handle assembly and the cleaning roller are in a separable state.

[0008] The floor brush of the surface cleaning device in this application also includes the following additional technical features:

[0009] A locking position is provided in the cleaning roller, and the locking mechanism includes an end cover and a locking member movable relative to the end cover. The locking member moves along the radial direction of the cleaning roller to have a locking position locked with the locking position and an unlocking position unlocked with the locking position.

[0010] The locking mechanism also includes a transmission member arranged in the end cover, and the driving part can be movably arranged on the side plate to have a separated state separated from the transmission member and a driving state that drives the transmission member to move and drive the locking member to switch from the locked position to the unlocked position through the transmission member.

[0011] The roller brush unit further includes a damping member abutting against the driving portion, wherein the damping member is configured to apply resistance to the driving portion so as to maintain the driving portion in the separated state.

[0012] The transmission member has a driving surface, and the locking member has a mating surface capable of abutting against the driving surface. The driving portion moves inwardly along the axial direction of the cleaning roller relative to the end cover to drive the locking member to switch from the locked position to the unlocked position through the transmission member.

[0013] A reset member abutting against the locking member is provided in the end cover, and the locking member is switched from the unlocking position to the locking position under the pushing of the reset member.

[0014] A locking position is provided in the cleaning roller, and the locking mechanism includes an end cover and a deformable locking member fixed to the end cover. The locking member is elastically deformed under the extrusion of the inner wall of the cleaning roller and the end cover to have a locking position locked with the locking position and an unlocking position unlocked with the locking position.

[0015] The inner wall of the cleaning roller is provided with a tripping position and an escape groove connected to the tripping position, the driving part is fixed to the end cover or the side plate, and the end cover has a first action, a second action and a third action that occur successively; under the first action, the end cover moves inward along the cleaning roller, driving the locking member to switch from a locked position locked in the locking position to an unlocked position falling into the tripping position; under the second action, the end cover moves outward along the cleaning roller and enters the escape groove after rotating a preset angle; under the third action, the end cover moves outward along the axial direction of the cleaning roller to drive the handle to detach from the cleaning roller.

[0016] The locking mechanism further includes a booster member provided on one side of the end cover, and the booster member is used to apply force to the end cover to drive the end cover to perform the third action after the end cover completes the second action.

[0017] The side plate includes a handle and a fixing member, wherein the handle is pivotally connected to the fixing member so that the handle has an initial state close to the cleaning roller and a deviated state in which the handle rotates relative to the end cover to deviate the other end of the side plate from the cleaning roller.

[0018] Due to the adoption of the above technical solution, the beneficial effects achieved by this application are as follows:

[0019] 1. In the prior art, the floor brush housing is provided with an installation cavity for installing the cleaning roller. When the roller brush unit is detached from the floor brush housing as a whole, the overall movement direction of the roller brush unit is along the axial direction of the cleaning roller toward the outside of the installation cavity. When the cleaning roller and the handle assembly in the roller brush unit are disassembled, the force applied to the handle assembly is also along the axial direction of the cleaning roller toward the outside of the inner cavity of the cleaning roller, that is, the force direction for detaching the roller brush unit from the floor brush housing is roughly consistent with the force direction for detaching the handle assembly from the cleaning roller. Therefore, when an outward pulling force is applied to the handle assembly, it is easy for the handle assembly to detach from the floor brush housing and the cleaning roller, while the cleaning roller is still at least partially retained in the installation cavity.

[0020] Unlike the prior art, the present application aims to achieve the separation of the cleaning roller and the handle assembly. Under the action of external force, the driving part needs to move into the cleaning roller to drive the locking mechanism and the cleaning roller to unlock, so that the handle assembly and the cleaning roller are in a separable state. Therefore, when the roller brush unit is detached from the floor brush housing, the overall movement direction of the roller brush unit is completely opposite to the movement direction when the driving part can drive the locking mechanism and the cleaning roller to unlock, thereby avoiding the phenomenon that the handle assembly is separated from the cleaning roller and the cleaning roller remains on the floor brush housing when the roller brush unit is disassembled, so that when the cleaning roller is disassembled for cleaning, maintenance or replacement, the roller brush unit can be removed from the floor brush housing as a whole first, avoiding the residue of the cleaning roller.

[0021] 2. As a preferred embodiment of the present application, the locking mechanism includes an end cap pivotally connected to the side plate so as to be rotatable relative to the side plate, and a locking member provided on the end cap. The end cap is locked and fixed to the cleaning roller via the locking member, so as to drive the end cap to rotate synchronously during the rotation of the cleaning roller, thereby ensuring the stability of the rotational movement of the cleaning roller. Driven by the driving unit, the locking member can move along the radial direction of the cleaning roller to unlock the locking position on the cleaning roller. After unlocking, the end cap and the side plate can be detached from the cleaning roller together, making the cleaning roller independent of the end cap and the side plate. Therefore, when replacing consumables, only the cleaning roller can be replaced, thereby reducing replacement costs.

[0022] Moreover, the locking part can be locked and unlocked with the cleaning roller by moving radially along the cleaning roller. The movement method of the locking part rationally utilizes the radial space inside the cleaning roller. Compared with movement methods such as rotation or swinging, the radial movement method occupies less space, which helps to realize the arrangement and operation of the locking mechanism within the limited space range inside the cleaning roller. Moreover, the radial movement design can reduce the number of mechanical parts and simplify the structural design, thereby reducing potential failure points and improving the smoothness and reliability of the locking mechanism and the cleaning roller locking or unlocking. In addition, the radial movement method of the locking part helps to reduce its interference and wear with other parts in the cleaning roller, thereby improving the durability of the locking mechanism and increasing the service life of the locking mechanism.

[0023] 3. As a preferred embodiment of the present application, the locking mechanism includes an end cap pivotally connected to the side plate so as to be rotatable relative to the side plate, and a locking member and a transmission member provided on the end cap. The driving unit can be movably provided on the side plate so as to have a separation state in which it is separated from the transmission member and a driving state in which it drives the transmission member to move. When the handle assembly does not need to be detached from the cleaning roller, the driving unit and the transmission member are in a separation state, which can prevent the driving unit from accidentally touching the cleaning roller. There is a contact-proof capacity space between the driving unit and the transmission member. In particular, during the actual application of the surface cleaning device, the driving unit may briefly touch an object in the cleaning environment, causing the driving unit to move inward slightly. The presence of this capacity space can prevent the locking mechanism and the cleaning roller from being unlocked due to the driving unit driving the transmission member due to a small accidental touch, thereby ensuring the mutual locking of the handle assembly and the cleaning roller and improving the reliability and stability of the surface cleaning device.

[0024] Furthermore, the roller brush assembly also includes a damping member that abuts the drive unit. The damping member applies resistance to the drive unit, thereby keeping the drive unit in a separated state, preventing the drive unit from contacting the transmission member due to accidental touch or unintentional operation, thereby preventing accidental operation and further improving the reliability of the surface cleaning device. Moreover, the provision of the damping member allows the user to more accurately predict and control the surface cleaning device, so that only when the user has the clear intention to separate the handle assembly and the cleaning roller will the user operate the drive unit to drive the transmission member to move, thereby unlocking the locking mechanism and the cleaning roller, thereby improving the predictability of operation.

[0025] 4. As a preferred embodiment of the present application, a reset member is provided in the end cap, and the locking member switches from an unlocked position to a locked position under the push of the reset member, so that when the user assembles the handle assembly and the cleaning roller, he only needs to push the end cap inward along the axial direction of the cleaning roller to the position corresponding to the locking member and the locking position, and the locking member can enter the locked position under the push of the reset member. Therefore, the user only needs to perform a single action to achieve the locking of the handle assembly and the cleaning roller, without the need for complex multi-step operations, which greatly improves the convenience of the assembly operation. Moreover, after the handle assembly and the cleaning roller are assembled, the reset member will continue to apply force to the locking member to prevent it from falling out of the locking position, so that the locking member remains in the locked position, avoiding the locking member from falling out of the locking position due to accidental touch, vibration, etc. during actual use, thereby ensuring the reliability and stability of the roller brush unit operation.

[0026] 5. As a preferred embodiment of the present application, the locking mechanism includes an end cap pivotally connected to the side plate so as to be rotatable relative to the side plate, and a deformable locking member fixed to the end cap. The locking member elastically deforms under the squeezing action of the inner wall of the cleaning roller and the end cap to lock or unlock with the locking position. This embodiment utilizes the deformable property of the locking member itself, so that the locking member can be locked or unlocked with the locking position during the process of moving with the drive unit into the cleaning roller. In this embodiment, there are fewer movable parts, the stability and reliability of the structure are enhanced, and the requirement for movement space is greatly reduced, which contributes to the compact design of the roller brush unit. This is very beneficial for applications with limited design space and actual operating space. Moreover, using the elastic deformation of the locking member itself to achieve locking and unlocking can simplify the user's operation steps. The user simply needs to apply force to the drive unit to drive the end cap and the locking member to move into the cleaning roller to cause the locking member to deform during axial movement, thereby completing locking or unlocking, making operation more convenient. In addition, since the locking part has elastic properties, it can reach the locked position or unlocked position once it is deformed. Especially in the unlocked position, the elastic properties of the locking part can be utilized to achieve self-locking between the locking mechanism and the cleaning roller, and the locking part can be maintained in the locked position, providing a stable locking state until the driving part is subjected to force again to drive the locking part to continue moving into the cleaning roller and reach the unlocked position, thereby achieving unlocking.

[0027] Furthermore, the inner wall of the cleaning roller is provided with a tripping position and an escape groove connected to the tripping position, the tripping position and the locking position are arranged in sequence along the axial direction of the cleaning roller, the driving part is fixed to the end cover or the side plate, and the end cover has a first action, a second action and a third action that occur in sequence; in the first action, the end cover moves inward along the axial direction of the cleaning roller, driving the locking part to switch from the locked position locked in the locking position to the unlocked position falling into the tripping position; in the second action, the end cover rotates along the axial direction of the cleaning roller by a preset angle and enters the escape groove; in the third action, the handle assembly moves outward along the axial direction of the cleaning roller to detach from the cleaning roller. Such an arrangement can simplify the operating steps and can realize the convenient operation of pressing the end cover once to lock and pressing the end cover twice to unlock, which greatly reduces the complexity of the operation and improves the user experience. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] The drawings described herein are used to provide a further understanding of the present application and constitute a part of the present application. The illustrative embodiments of the present application and their descriptions are used to explain the present application and do not constitute an improper limitation on the present application. In the drawings:

[0029] Figure 1 This is a three-dimensional diagram of a lower surface cleaning device according to an embodiment of the present application;

[0030] Figure 2This is a schematic diagram of the assembly of a lower roller brush unit in one embodiment of Example 1 of the present application;

[0031] Figure 3 This is an exploded view of the lower roller brush unit in one embodiment of Example 1 of the present application;

[0032] Figure 4 This is a three-dimensional diagram of a cleaning roller in one embodiment of Example 1 of the present application;

[0033] Figure 5 This is a three-dimensional diagram of a lower handle assembly in one embodiment of Example 1 of the present application;

[0034] Figure 6 This is a partial structural diagram of a lower handle assembly in one embodiment of Example 1 of the present application;

[0035] Figure 7 The three-dimensional structure of the lower end cover in one embodiment of the present application is Figure 1 ;

[0036] Figure 8 This is a cross-sectional view of the roller brush unit when the lower locking member is in the locked position in one embodiment of Example 1 of the present application;

[0037] Figure 9 for Figure 8 A magnified view of part A;

[0038] Figure 10 This is a cross-sectional view of the roller brush unit when the lower locking member is in the unlocked position in one embodiment of the present application. Figure 1 ;

[0039] Figure 11 for Figure 10 A magnified view of part B;

[0040] Figure 12 This is an enlarged view of a transmission member in one implementation manner in Example 1 of the present application;

[0041] Figure 13 This is a three-dimensional diagram of the lower driving portion of an implementation method in Example 1 of the present application;

[0042] Figure 14 The three-dimensional structure of the lower end cover in one embodiment of the present application is Figure 2 ;

[0043] Figure 15 This is a cross-sectional view of the roller brush unit when the lower locking member is in the unlocked position in one embodiment of the present application. Figure 2 ;

[0044] Figure 16 for Figure 15 Magnified view of part C;

[0045] Figure 17 This is an exploded view of the structure of the handle assembly in one embodiment of Example 1 of the present application;

[0046] Figure 18 is a cross-sectional view of the roller brush unit when the lower locking member is in a locked position in one embodiment of Example 2 of the present application;

[0047] Figure 19 This is a cross-sectional view of the roller brush unit when the lower locking member is in the unlocked position in one embodiment of Example 2 of the present application;

[0048] Figure 20 This is an assembly diagram of a lower roller brush unit in one embodiment of Example 3 of the present application;

[0049] Figure 21 This is an exploded view of the lower roller brush unit in one embodiment of Example 3 of the present application;

[0050] Figure 22 This is a three-dimensional diagram of a cleaning roller in one embodiment of Example 3 of the present application;

[0051] Figure 23 This is an assembly diagram of a lower handle assembly in one embodiment of Example 3 of the present application;

[0052] Figure 24 A cross-sectional view of a cleaning roller structure in accordance with an embodiment of Example 3 of the present application;

[0053] Figure 25 This is a cross-sectional view of a partial structure of the roller brush unit when the lower locking member is in a locked position in one embodiment of Example 3 of the present application;

[0054] Figure 26 This is a cross-sectional view of the structure of the roller brush unit when the lower locking member is in the unlocked position in one embodiment of Example 3 of the present application. Figure 1 ;

[0055] Figure 27 This is a cross-sectional view of the structure of the roller brush unit when the lower locking member is in the unlocked position in one embodiment of Example 3 of the present application. Figure 2 ;

[0056] Figure 28 This is a cross-sectional view of a partial structure of the roller brush unit when the lower locking member moves to the escape groove in one embodiment of Example 3 of the present application;

[0057] Figure 29 This is a schematic diagram of the swing of the lower side panel in an embodiment of Example 3 of the present application between the initial state and the deviated state, wherein the side panel marked with a dotted line is a schematic diagram of the state of the side panel in the deviated state;

[0058] Figure 30This is a structural diagram of a lower roller brush unit in an embodiment of Example 3 of the present application, and it mainly illustrates the structure of the end cover;

[0059] Figure 31 This is a structural diagram of a lower roller brush unit in another embodiment of Example 3 of the present application, and it mainly illustrates the structure of the end cover;

[0060] Figure 32 This is a schematic structural diagram of a lower locking member in an implementation method of Example 3 of the present application;

[0061] Figure 33 This is a schematic diagram of the state in which the locking member moves from the locking position to the release position and then to the release groove in another implementation manner in Example 3 of the present application, wherein the direction of the arrow indicates the change in the movement position of the locking member.

[0062] in,

[0063] 1. Floor brush housing; 2. Cleaning roller; 21. Locking position; 22. Escape groove; 23. First outward guide slope; 24. Second outward guide slope; 25. Inward guide slope; 26. Locking surface; 27. Limiting groove; 28. Abutment top; 3. End cover; 31. Sliding groove; 32. Pressure cover; 33. Rotating portion; 331. Rotating hole; 34. Cover plate; 341. Third through hole; 35. Limiting rib; 36. Through groove; 361. First groove section; 362. Second groove section; 363. Third groove section; 4. Rotating shaft; 5. Bearing; 6. First positioning member; 61. First clamping surface; 7. Second positioning member; 8. Driving unit; 81 , force-applying part; 82, action part; 821, first through hole; 822, second through hole; 83, knob part; 84, linkage part; 9, side plate; 91, guide hole; 92, positioning rib; 921, second clamping surface; 93, concave cavity; 94, pin shaft; 95, handle; 96, fixing part; 961, pin hole; 10, transmission part; 101, driving surface; 102, fixing buckle; 1021, tongue; 11, damping part; 12, reset part; 13, locking part; 131, first mating inclined surface; 132, second mating inclined surface; 133, third mating inclined surface; 134, top surface; 135, mating surface; 14, booster part. DETAILED DESCRIPTION

[0064] In order to more clearly illustrate the overall concept of the present application, a detailed description is given below in an illustrative manner in conjunction with the accompanying drawings.

[0065] The following description sets forth many specific details to facilitate a thorough understanding of the present application. However, the present application may also be implemented in other ways than those described herein, and therefore, the scope of protection of the present application is not limited by the specific embodiments disclosed below. It should be noted that the embodiments of the present application and the features of each embodiment may be combined with each other unless there is a conflict.

[0066] In addition, in the description of the present application, it should be understood that the terms "top", "bottom", "inside", "outside", "axial", "radial", "circumferential", etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, they cannot be understood as limitations on the present application.

[0067] In this application, unless otherwise expressly specified or limited, terms such as "installed," "connected," "connect," and "fixed" should be understood in a broad sense. For example, they may refer to fixed connection, detachable connection, or integration; mechanical connection, electrical connection, or communication; direct connection or indirect connection through an intermediate medium; and internal communication between two components or interaction between two components. Those skilled in the art will understand the specific meanings of the above terms in this application based on specific circumstances.

[0068] In this application, unless otherwise expressly specified and limited, a first feature "above" or "below" a second feature may be that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in an appropriate manner in any one or more embodiments or examples.

[0069] In the prior art, the floor brush housing is provided with an installation cavity for installing a cleaning roller. When the roller brush unit is detached from the floor brush housing as a whole, the overall movement direction of the roller brush unit is along the axial direction of the cleaning roller toward the outside of the installation cavity. When the cleaning roller and the handle assembly in the roller brush unit are disassembled, the force direction of the handle assembly is also along the axial direction of the cleaning roller toward the outside of the inner cavity of the cleaning roller, that is, the force direction for detaching the roller brush unit from the floor brush housing is roughly consistent with the force direction for detaching the handle assembly from the cleaning roller. Therefore, when an outward pulling force is applied to the handle assembly, it is easy for the handle assembly to detach from the floor brush housing and the cleaning roller, while the cleaning roller is still at least partially retained in the installation cavity.

[0070] Based on this, Figure 1 As shown, the present application provides a floor brush for a surface cleaning device, including a floor brush shell 1 and a roller brush unit, the roller brush unit including a cleaning roller 2 and a handle assembly, the handle assembly is detachably connected to the cleaning roller 2, the cleaning roller 2 is rotatably mounted on the floor brush shell 1 through the handle assembly, the handle assembly includes a side plate 9, a locking mechanism and a driving part 8, the side plate 9 is locked and mounted on the cleaning roller 2 through the locking mechanism, the side plate 9 is connected to the cleaning roller 2 through the locking mechanism, the driving part 8 is moved into the cleaning roller 2 by an external force and drives the locking mechanism to unlock the cleaning roller 2, so that the handle assembly and the cleaning roller 2 are in a separable state.

[0071] The present application aims to achieve the separation of the cleaning roller 2 and the handle assembly. Under the action of external force, the driving part 8 needs to move into the cleaning roller 2 to drive the locking mechanism and the cleaning roller 2 to unlock, so that the handle assembly and the cleaning roller 2 are in a separable state. Therefore, when the roller brush unit is detached from the floor brush housing 1, the overall movement direction of the roller brush unit is completely opposite to the movement direction when the driving part 8 can drive the locking mechanism and the cleaning roller 2 to unlock. This avoids the phenomenon that the handle assembly is separated from the cleaning roller 2 and the cleaning roller 2 remains on the floor brush housing 1 when the roller brush unit is disassembled, so that when the cleaning roller 2 is cleaned, maintained or replaced after disassembly, the roller brush unit can be removed from the floor brush housing 1 as a whole first, avoiding the residue of the cleaning roller 2.

[0072] The side plate 9 in the present application is detachably connected to the floor brush housing 1, but the present application does not limit the manner in which the side plate 9 and the floor brush housing 1 are detachably connected. In one embodiment, one of the side plate 9 and the floor brush housing 1 is provided with a magnetic member, and the other is provided with a matching member that can magnetically cooperate with the magnetic member. The side plate 9 is detachably mounted on the floor brush housing 1 through the magnetic cooperation between the magnetic member and the matching member, thereby realizing a detachable connection between the roller brush unit and the floor brush housing 1. The magnetic member can be, for example, a permanent magnet, and the matching member is a structure made of ferromagnetic material, or the matching member is a permanent magnet that can generate a magnetic attraction force opposite to the magnetism of one end of the magnetic member. In another embodiment, one of the side plate 9 and the floor brush housing 1 is provided with a buckle, and the other is provided with a buckle position that is compatible with the buckle. The side plate 9 is detachably mounted on the floor brush housing 1 through the snap-fit ​​cooperation between the buckle and the buckle position, thereby realizing a detachable connection between the roller brush unit and the floor brush housing 1.

[0073] Example 1:

[0074] like Figures 2 to 17 As shown, a locking position 21 is provided in the cleaning roller 2, and the locking mechanism includes an end cover 3 and a locking member 13 that can move relative to the end cover 3. The locking member 13 moves along the radial direction of the cleaning roller 2 to have a locking position locked with the locking position 21 and an unlocking position unlocked with the locking position 21.

[0075] The end cap 3 is pivotally connected to the side plate 9 so as to be rotatable relative to the side plate 9. The end cap 3 is locked and fixed to the cleaning roller 2 via a locking member 13, so that the end cap 3 is driven to rotate synchronously with the cleaning roller 2 during its rotation, thereby ensuring the stability of the rotational motion of the cleaning roller 2. Driven by the driving unit 8, the locking member 13 can move in the radial direction of the cleaning roller 2 to unlock the locking position 21 on the cleaning roller 2. After unlocking, the end cap 3 and the side plate 9 can be detached from the cleaning roller 2, making the cleaning roller 2 independent of the end cap 3 and the side plate 9. Therefore, when replacing consumables, only the cleaning roller 2 can be replaced, thereby reducing replacement costs.

[0076] Moreover, the locking member 13 can be locked and unlocked with the cleaning roller 2 by moving radially along the cleaning roller 2. The movement of the locking member 13 rationally utilizes the radial space inside the cleaning roller 2. Compared with movement methods such as rotation or swinging, the radial movement method occupies less space, which helps to realize the arrangement and operation of the locking mechanism within the limited space range inside the cleaning roller 2. Moreover, the radial movement design can reduce the number of mechanical parts and simplify the structural design, thereby reducing potential failure points and improving the smoothness and reliability of the locking mechanism and the cleaning roller 2. In addition, the radial movement method of the locking member 13 helps to reduce its interference and wear with other parts in the cleaning roller 2, thereby improving the durability of the locking mechanism and increasing the service life of the locking mechanism.

[0077] As a preferred implementation method of this embodiment 1, Figure 3 、 Figures 8 to 11 As shown, the locking mechanism also includes a transmission member 10 disposed within the end cap 3, and the drive unit 8 is movably disposed on the side plate 9 to have a separated state separated from the transmission member 10 and a driven state in which the transmission member 10 is driven to drive the locking member 13 from the locked position to the unlocked position through the transmission member 10. When the handle assembly and the cleaning roller 2 do not need to be detached, the drive unit 8 and the transmission member 10 are in a separated state, which can prevent the drive unit 8 from accidentally touching the cleaning roller 2. There is a contact-proof capacity space between the drive unit 8 and the transmission member 10. In particular, during the actual use of the surface cleaning device, the drive unit 8 may briefly touch an object in the cleaning environment, causing the drive unit 8 to move inward slightly. The presence of this capacity space can prevent the locking mechanism and the cleaning roller 2 from being unlocked due to the drive unit 8 driving the transmission member 10 to move due to a small accidental touch, thereby ensuring the mutual locking of the handle assembly and the cleaning roller 2 and improving the reliability and stability of the surface cleaning device.

[0078] like Figures 8 to 11 、 Figure 13 As shown, the driving part 8 includes a force-applying part 81 and an action part 82 connected to each other. The side plate 9 is provided with a guide hole 91 adapted to the force-applying part 81 and allowing the force-applying part 81 to slide back and forth. The action part 82 is provided inside the end cover 3, and the action part 82 includes an abutting part that can abut against the transmission member 10 to drive the transmission member 10 to move. When an external force is applied to the force-applying part 81, the force-applying part 81 moves toward the inside of the end cover 3 along the guide hole 91 to drive the action part 82 to slide toward the inside of the end cover 3. When the action part 82 abuts against the transmission member 10, it drives the transmission member 10 to slide toward the inside of the end cover 3 to trigger the action of the locking member 13, so that the locking member 13 switches from the locked position to the unlocked position. That is, by pressing the force-applying part 81 to move the force-applying part 81 toward the inside of the end cover 3, the locking member 13 can be driven to move by the transmission member 10 to achieve unlocking.

[0079] Preferably, if Figure 8 and Figure 9 As shown, the side plate 9 is provided with a recessed cavity 93 that is recessed toward the end cap 3, and the force-applying portion 81 is located within the recessed cavity 93. When the driving portion 8 is not triggered by an external force, the outer end surface of the force-applying portion 81 is flush with the outer end surface of the side plate 9, or the outer end surface of the force-applying portion 81 is retracted relative to the outer end surface of the side plate 9 to be completely located within the recessed cavity 93. This arrangement prevents the force-applying portion 81 from protruding from the side plate 9 and being triggered by accidentally touching or scraping against objects in the cleaning environment during cleaning operations, thereby ensuring the stable installation of the cleaning roller 2.

[0080] like Figure 8 and Figure 9As shown, the roller brush unit also includes a damping member 11 that abuts the driving portion 8. The damping member 11 is used to apply resistance to the driving portion 8 to keep the driving portion 8 in a separated state. This arrangement can prevent the driving portion 8 from contacting the transmission member 10 in the event of an accidental touch or unintentional operation, thereby preventing the occurrence of unexpected actions and further improving the reliability of the surface cleaning device. Moreover, the provision of the damping member 11 allows the user to more accurately predict and control the surface cleaning device, so that only when the user has a clear intention to separate the handle assembly and the cleaning roller 2 will the user operate the driving portion 8 to drive the transmission member 10 to move, so that the locking mechanism and the cleaning roller 2 are unlocked, thereby improving the predictability of the operation.

[0081] In a specific example, Figure 8 and Figure 9 As shown, damping member 11 is a spring, positioned on the side of driving unit 8 facing away from side plate 9, fully utilizing the redundant space within end cap 3 for spring placement. The spring is compressed and abuts against action portion 82 to apply resistance to driving unit 8. This allows force-applying portion 81 to maintain the driving unit 8 separated from transmission member 10 when no external force is applied. Of course, damping member 11 may also employ other conventional structures.

[0082] This embodiment 1 does not limit the specific matching form of the transmission member 10 and the locking member 13, and can adopt any one of the following embodiments:

[0083] Implementation method 1: Figures 5 to 7 As shown, the end cover 3 is provided with a sliding groove 31 for the locking member 13 to be extended and retracted to lock or unlock with the locking position 21. Figures 8 to 11 As shown, the transmission member 10 has a driving surface 101, and the locking member 13 has a mating surface 135 that can abut against the driving surface 101. The driving portion 8 moves inward along the axial direction of the cleaning roller 2 relative to the end cap 3 to drive the locking member 13 to switch from a locked position to an unlocked position through the transmission member 10. Through the cooperation between the driving surface 101 and the mating surface 135, the axial movement of the transmission member 10 can be converted into radial movement of the locking member 13, thereby achieving force transmission and action switching within the limited space inside the cleaning roller 2, allowing the locking member 13 to be stably triggered, and the entire cleaning roller 2 to be more compact. Moreover, the driving surface 101 and the mating surface can disperse stress through surface-to-surface contact, thereby reducing wear between the transmission member 10 and the locking member 13 during movement and extending the service life of both. Furthermore, the cooperation between the driving surface 101 and the mating surface can provide a self-locking feature to a certain extent, that is, when the force-applying portion 81 is not triggered by an external force, the locking member 13 can be maintained in the locked position, so that the cleaning roller 2 and the handle assembly can be firmly assembled together, ensuring the reliability and stability of the operation of the surface cleaning device.

[0084] Embodiment 2: This embodiment 2 is not shown in the figure. In this embodiment, the transmission member includes a cam that can rotate under the drive of the driving part and a follower that can contact the outer contour of the cam to move. The follower is linked with the locking member to drive the locking member to switch from the locked position to the unlocked position.

[0085] As a preferred embodiment of the present application, Figure 9 、 Figure 11 and Figure 14 As shown, one end of the end cap 3 is open to achieve installation and fixation with the side plate 9, and the other end of the end cap 3 is provided with a cover plate 34. The cover plate 34 is provided with a rotating portion 33 extending axially inward along the end cap 3, and the rotating portion 33 is provided with a rotating hole 331. The handle assembly also includes a rotating shaft 4 and a bearing 5 adapted to the rotating shaft 4. The rotating shaft 4 and the rotating hole 331 are interference fit, so that when the locking member 13 is in the locked position, the end cap 3 can rotate with the cleaning roller 2 relative to the side plate 9 around the axial hole of the bearing 5, thereby improving the rotation stability of the cleaning roller 2.

[0086] In a specific implementation, Figure 3 、 Figure 9 、 Figure 11 and Figure 17 As shown, the handle assembly also includes a positioning assembly for fixing the bearing 5 to the side plate 9, and the positioning assembly includes a first positioning member 6 and a second positioning member 7. The first positioning member 6 is located on the inner side of the end cover 3, and the second positioning member 7 is located on the outer side of the end cover 3. A first through hole 821 for the first positioning member 6 and / or the second positioning member 7 to pass through is provided on the action portion 82 of the driving portion 8, and the first positioning member 6 and the second positioning member 7 are connected by fasteners (such as screws). Of course, the first positioning member 6 and the second positioning member 7 can also be connected in other detachable ways, such as snap-on connection. The first positioning member 6 is provided with a first clamping surface 61, and the side plate 9 is provided with a positioning rib 92 extending toward the inner side of the end cover 3, as shown in FIG. Figure 13 As shown, the active portion 82 of the drive unit 8 further includes a second through-hole 822 through which a positioning rib 92 passes. Multiple positioning ribs 92 are provided at intervals around the guide hole 91 for sliding movement of the drive unit 8, or the positioning ribs 92 extend continuously around the circumference of the guide hole 91 to form a closed annular structure. The positioning rib 92 includes a second clamping surface 921, and the bearing 5 is clamped and fixed between the first clamping surface 61 and the second clamping surface 921.

[0087] Furthermore, if Figure 17 As shown, the action portion 82 and the first positioning member 6 are respectively provided with positioning portions for installing the damping member 11. The positioning portions can be, for example, a sleeve structure, a positioning column structure, etc., as long as the compression fixation and telescopic guidance of the damping member 11 between the action portion 82 and the first positioning member 6 can be achieved.

[0088] To further ensure that the driving part 8 is in a separated state between the transmission member 10 and the driving part 8 when not triggered by external force, one of the transmission member 10 and the end cover 3 is provided with a stopper, and the other of the two is provided with a limiter adapted to the stopper. When the locking member 13 switches from the unlocked position to the locked position, the stopper cooperates with the limiter to keep the transmission member 10 in a separated state from the driving part 8. In a specific example, as Figures 12 to 17 As shown, one end of the end cover 3 is open to achieve installation and fixation with the side plate 9, and the other end of the end cover 3 is provided with a cover plate 34, and the cover plate 34 is provided with a third through hole 341, and the transmission member 10 is provided with a fixing buckle 102. During the movement of the transmission member 10, the fixing buckle 102 slides along the third through hole 341, and one end of the fixing buckle 102 is provided with a tongue 1021. In the locked position, the tongue 1021 abuts against the peripheral edge of the cover plate 34 adjacent to the third through hole 341 to achieve the movement limitation of the cover plate 34 on the transmission member 10. In this example, the tongue 1021 constitutes a stop portion, and the peripheral area adjacent to the third through hole 341 on the cover plate 34 constitutes a limiting portion.

[0089] As a preferred implementation method of this embodiment 1, Figure 3 、 Figure 6 、 Figures 8 to 11 As shown, a reset member 12 is provided within the end cap 3, abutting against the locking member 13. The locking member 13 switches from an unlocked position to a locked position when pushed by the reset member 12. This arrangement allows the user to assemble the handle assembly and the cleaning roller 2 by simply pushing the end cap 3 inward along the axial direction of the cleaning roller 2 until the locking member 13 corresponds to the locking position 21. The locking member 13 then enters the locked position when pushed by the reset member 12. Therefore, the user only needs to perform a single action to lock the handle assembly and the cleaning roller 2, eliminating the need for complex, multi-step operations, significantly improving the convenience of the assembly operation. Furthermore, after the handle assembly and the cleaning roller 2 are assembled, the reset member 12 continuously applies a force to the locking member 13 to prevent it from dislodging from the locking position 21, thereby maintaining the locking member 13 in the locked position. This prevents the locking member 13 from dislodging from the locking position 21 during actual use due to accidental contact, vibration, etc., thereby ensuring the reliability and stability of the roller brush unit. The reset member 12 may, for example, be a spring.

[0090] In a specific example, Figure 6 As shown, two locking members 13 are symmetrically arranged along the axial direction of the end cover 3, one end of the reset member 12 abuts against the locking member 13, and the other end abuts against the rotating portion 33 of the end cover 3. Figure 5As shown, a pressure cover 32 is provided on one side of the end cover 3, and the pressure cover 32 abuts against the locking member 13 to prevent the locking member 13 from being disengaged from the sliding groove 31 of the end cover 3 after being subjected to force, thereby ensuring that the locking member 13 can be smoothly switched from the unlocked position to the locked position during the assembly process of the roller brush assembly and the cleaning roller 2. Of course, other methods can also be used to prevent the locking member 13 from being disengaged, such as by reasonably designing the movement stroke of the locking member 13 and the expansion and contraction amount of the reset member 12, etc., to prevent the locking member 13 from being disengaged from the sliding groove 31 as a whole when switching from the locked position to the unlocked position.

[0091] This embodiment 1 does not limit the specific structure of the locking position 21. In one implementation, the locking position 21 is a recessed depression formed on the inner wall of the cleaning roller 2. In another implementation, the inner wall of the cleaning roller 2 has a variable diameter structure, where a stop step is formed. This stop step constitutes the locking position 21. When the locking member 13 moves inward with the end cap 3 to a position corresponding to the stop step, the locking member 13 extends to contact the stop step, thereby achieving locking.

[0092] As a preferred embodiment of the present application, Figure 4 and Figure 7 As shown, the outer wall of the end cap 3 is provided with a limiting rib 35, and the inner wall of the cleaning roller 2 is provided with a limiting groove 27 adapted to the limiting rib 35. The cooperation between the limiting rib 35 and the limiting groove 27 achieves rough positioning of the cleaning roller 2 and the roller brush assembly during assembly, thereby achieving rapid assembly of the two. Of course, the reverse can also be achieved, with the limiting groove 27 provided on the outer wall of the end cap 3 and the matching limiting rib 35 provided on the inner wall of the cleaning roller 2.

[0093] Example 2:

[0094] The structure and principle of the second embodiment are basically the same as those of the first embodiment, except that the force application direction of the driving part 8 is different.

[0095] Unlike the push-type driving of the driving part in the first embodiment, in the second embodiment, Figure 18 and Figure 19 As shown, the driving portion 8 includes a knob portion 83, a linkage portion 84 and an action portion 82 connected in sequence. The action portion 82 is arranged inside the end cover 3, the knob portion 83 is arranged outside the end cover 3, and the side plate 9 is provided with a guide hole 91 adapted to the linkage portion 84.

[0096] In one embodiment, Figure 18 and Figure 19As shown, the linkage portion 84 is provided with external threads, and the inner wall of the guide hole 91 is provided with internal threads. When an external force is applied to the knob portion 83, the knob portion 83 drives the linkage portion 84 to rotate while performing axial feed motion along the guide hole 91, thereby driving the action portion 82 to move. When the action portion 82 reaches a driving state where it abuts the transmission member 10, it drives the transmission member 10 to slide toward the interior of the end cap 3, triggering the action of the locking member 13, causing the locking member 13 to switch from a locked position to an unlocked position.

[0097] In another embodiment (not shown), the linkage portion serves solely as a guide, the operating portion is a ball screw-like structure, and the transmission member is a nut structure capable of helically engaging the operating portion. When an external force is applied to the knob, the knob drives the operating portion to rotate via the linkage portion. Utilizing the principle of a ball screw pair, the rotational motion of the operating portion is converted into linear feed motion of the transmission member, thereby driving the locking member to switch positions.

[0098] Of course, this embodiment 2 is not limited to the above two implementations. It can also adopt other transmission matching methods to drive the locking member 13 to achieve position switching by applying torque to the driving part 8.

[0099] Example 3:

[0100] The structure and principle of this embodiment 3 are basically the same as those of embodiment 1. The differences lie in the structural form of the locking member, the structural form of the driving part, the locking method of the locking mechanism, the structural form of the locking position, etc.

[0101] like Figures 20 to 33As shown, a locking position 21 is provided in the cleaning roller 2, and the locking mechanism includes an end cover 3 and a deformable locking member 13 fixed to the end cover 3. The locking member 13 is elastically deformed under the squeezing action of the inner wall of the cleaning roller 2 and the end cover 3, so as to have a locking position locked with the locking position 21 and an unlocking position unlocked with the locking position 21. This embodiment 3 makes use of the deformable property of the locking member 13 itself, so that the locking member 13 can be locked or unlocked with the locking position 21 during the process of moving into the cleaning roller 2 with the driving unit 8. There are fewer movable parts in this embodiment, the stability and reliability of the structure are enhanced, and the demand for movement space is greatly reduced, which contributes to the compact design of the roller brush unit, which is very beneficial for applications with limited design space and actual operating space. Moreover, the use of the elastic deformation of the locking member 13 itself to achieve locking and unlocking can simplify the user's operating steps. The user only needs to simply apply force to the driving unit 8 to drive the end cover 3 and the locking member 13 to move into the cleaning roller 2 to achieve the deformation of the locking member 13 during the axial movement, thereby completing the locking or unlocking, making the operation more convenient. In addition, since the locking member 13 has elastic properties, once the locking member 13 is deformed, it can reach the locked position or the unlocked position. In particular, in the unlocked position, the elastic properties of the locking member 13 can be used to achieve self-locking between the locking mechanism and the cleaning roller 2, and the locking member 13 can be maintained in the locked position, providing a stable locked state until the driving unit 8 is subjected to force again to drive the locking member 13 to continue to move into the cleaning roller 2 and reach the unlocked position, thereby achieving unlocking.

[0102] In order to make the locking member 13 easy to deform and relatively easy to switch positions, a through groove 36 is provided on the end cover 3 around the locking member 13 to improve the elasticity of the area on the end cover 3 where the locking member 13 is provided. This embodiment 3 does not limit the shape of the through groove 36. In one embodiment, as Figure 30 As shown, there are two through slots 36, each of which includes a first slot section 361 extending in a direction parallel to the axial direction of the end cover 3, a second slot section 362 communicating with one end of the first slot section 361 and extending along the circumference of the end cover 3, and a third slot section 363 communicating with the other end of the first slot section 361 and extending along the circumference of the end cover 3. Preferably, the second slot section 362 and the third slot section 363 are arranged in parallel, and the locking member 13 is located between the two first slot sections 361. In another embodiment, as Figure 31 As shown, there are two through grooves 36, each of which extends in a winding manner on the end cover 3. Each through groove 36 includes a plurality of first groove sections 361 extending in a direction parallel to the axial direction of the end cover 3, and a plurality of second groove sections 362 connected to the first groove sections 361 and extending along the circumferential direction of the end cover 3. The first groove sections 361 of the two through grooves 36 extend toward each other to form a spaced distribution and mutual insertion posture, and the locking member 13 is located between two adjacent first groove sections 361 belonging to the two through grooves 36.

[0103] As a preferred implementation of this embodiment 3, Figures 21 to 23 As shown, the inner wall of the cleaning roller 2 is provided with a tripping position and an escape groove 22 connected to the tripping position, the driving unit 8 is fixed to the end cover 3 or the side plate 9, and the end cover 3 has a first action, a second action, and a third action that occur in sequence. In the first action, the end cover 3 moves inward along the cleaning roller 2, driving the locking member 13 to switch from the locked position locked in the locking position 21 to the unlocked position falling into the tripping position; in the second action, the end cover 3 moves outward along the cleaning roller 2 and rotates a preset angle before entering the escape groove 22; in the third action, the end cover 3 moves outward along the axial direction of the cleaning roller 2 to drive the side plate 9 to detach from the cleaning roller 2. Such an arrangement can simplify the operating steps and can realize the convenient operation of pressing the end cover 3 once to lock and pressing the end cover 3 twice to unlock, which greatly reduces the complexity of the operation and improves the user experience.

[0104] Furthermore, if Figures 24 to 28 As shown, the locking mechanism further includes a booster 14 provided on one side of the end cap 3. The booster 14 is used to apply force to the end cap 3 to drive the end cap 3 to perform the third action after the end cap 3 completes the second action. By providing the booster 14 to assist the end cap 3 in automatically switching from the second action to the third action, the user is prevented from having to pay sufficient attention and have sufficient disassembly experience to detach the handle assembly self-cleaning roller 2. That is, the user only needs to press the end cap 3, and the end cap 3 can enter the escape groove 22 under the action of the booster 14. The handle assembly self-cleaning roller 2 can be easily detached by pulling out the handle assembly, thereby improving the user experience.

[0105] In a specific implementation, Figure 21 As shown, the booster 14 is a spring, which is arranged on the side of the end cover 3 facing away from the side plate 9. A stopper 28 is provided in the cleaning roller 2, which can abut against the spring along the axial direction of the cleaning roller 2. When the locking member 13 is in the locked position, one end of the spring abuts against the stopper 28 and is in a compressed state, thereby providing an outward force to the end cover 3, helping to keep the locking member 13 firmly in the locked position. When force is applied to the driving part 8 to drive the end cover 3 to move further into the cleaning roller 2, the spring is further compressed, so that when the locking member 13 enters the unlocked position, the end cover 3 can move toward the outside of the cleaning roller 2 under the action of the spring and enter the escape groove 22.

[0106] The structural form and arrangement of the locking position 21, the release position and the release groove 22 in this embodiment 3 can adopt any one of the following embodiments:

[0107] Implementation method three: Figure 22 、 Figures 24 to 26As shown, the locking position 21 and the release position are arranged in sequence along the axial direction of the cleaning roller 2, and the release position is located at a position further inward relative to the locking position 21. The inner wall of the cleaning roller 2 is provided with a connecting groove 36 connecting the release position and the release groove 22. The inner wall of the connecting groove 36 is provided with a first outward guide slope 23, and the locking member 13 is provided with a first matching slope 131 that can match with the first outward guide surface. When the end cover 3 is pressed to make the locking member 13 enter the release position, the booster 14 applies force to the end cover 3 to make the locking member 13 reach the position shown in FIG. Figure 27 As shown in FIG, the first matching bevel 131 and the first outward guide bevel 23 abut against each other, and under the guidance of the two and the force of the booster 14, the end cover 3 rotates by a preset angle until the locking member 13 enters the position shown in FIG. Figure 28 At the entrance of the escape slot 22 shown, the handle assembly can be pulled outwards to separate the handle assembly from the cleaning roller 2 .

[0108] Implementation 4: Different from Implementation 3, in this Implementation 4, Figure 33 As shown, the locking position 21 and the tripping position are connected to each other, and the tripping position is connected to the escape groove 22. The inner wall of the cleaning roller 2 is provided with an inward guide slope 25 extending from the locking position 21 to the tripping position. Figure 32 As shown, the locking member 13 has a second matching bevel 132 that matches the inward guide bevel 25. The inner wall of the cleaning roller 2 is also provided with a second outward guide bevel extending from the release position to the release groove 22, and the locking member 13 has a third matching bevel 133 that can match the second outward guide bevel 24. The inner wall of the cleaning roller 2 is also provided with a locking surface 26 at the locking position 21 from the release position, and the locking member 13 has a top surface 134 that can abut against the locking surface 26. Figure 33 As shown, the movement trajectory of the locking member 13 in the locking position 21, the release position and the escape groove 22 is shown. When the locking member 13 is in the locking position 21, under the thrust of the booster 14, the top surface 134 is pressed against the locking surface 26, so that the locking member 13 is firmly locked in the locking position. When the driving part 8 continues to apply force to drive the end cover 3 to move inwardly toward the cleaning roller 2, the second matching bevel 132 of the locking member 13 abuts against the inward guide bevel 25, and enters the escape position under the drive of the inward guide bevel 25. Thereafter, it moves outward under the thrust of the booster 14 until the third matching bevel 133 abuts against the second outward guide bevel 24. Under the guiding action and the thrust of the booster 14, the end cover 3 rotates by a preset angle to allow the locking member 13 to enter the escape groove 22. The handle assembly is pulled outward to achieve the separation of the handle assembly from the cleaning roller 2.

[0109] Compared with the third embodiment, the fourth embodiment has a state in which the locking position 21 and the tripping position are interconnected, so that when the locking member 13 switches from the locking position to the unlocking position, there is no need to overcome the elastic force of the locking member 13 abutting against the inner wall of the cleaning roller 2 to cause itself to deform, and the entire operation is more labor-saving and the user experience is better.

[0110] In order to enable the end cover 3 to drive the locking member 13 to move from the locking position 21 to the release position during the movement, the end cover 3 needs to have a certain pressing stroke, and the gap between the side plate and the cleaning roller 2 is generally designed to be small. Therefore, in order to avoid interference between the end cover 3 and the cleaning roller 2 during the pressing stroke, as a preferred embodiment of this embodiment 3, Figure 29 As shown, the side plate 9 includes a handle 95 and a fixing member 96, and the handle 95 is pivotally connected to the fixing member 96 so that the handle 95 has an initial state close to the cleaning roller 2 and a deviated state in which the handle 95 rotates relative to the end cover 3 to deviate from the other end of the side plate 9 from the cleaning roller 2.

[0111] In a specific implementation, Figure 21 As shown, the outer diameter of the fixing member 96 is smaller than the inner diameter of the end cover 3, and one of the handle 95 and the fixing member 96 is provided with a pin shaft 94, and the other is provided with a pin hole 961 adapted to the pin shaft 94, so that the handle 95 can be deflected relative to the fixing member 96. When it is necessary to press the end cover 3 a second time to unlock it, the handle 95 can be rotated to a deviated state first to avoid interference between the side plate 9 and the cleaning roller 2, so that the unlocking operation can be carried out smoothly. In addition, the deviated handle 95 can also serve as a force handle, so that after the locking member 13 enters the disengagement groove 22, the handle assembly can be easily detached from the cleaning roller 2 by pulling the side plate 9.

[0112] Anything not described in this application can be achieved by adopting or drawing on existing technologies.

[0113] The various embodiments in this specification are described in a progressive manner, and the same or similar parts between the various embodiments can be referred to each other. Each embodiment focuses on the differences from other embodiments.

[0114] The foregoing is merely an embodiment of the present application and is not intended to limit the present application. The technical features or structures in the aforementioned different embodiments can be arbitrarily combined to form other specific technical solutions as needed. For those skilled in the art, various changes and variations can be made to the present application. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present application should be included in the scope of the claims of the present application.

Claims

1. A floor brush for a surface cleaning device, comprising a floor brush housing and a roller brush unit, wherein the roller brush unit comprises a cleaning roller and a handle assembly, wherein the handle assembly is detachably connected to the cleaning roller, and the cleaning roller is rotatably mounted on the floor brush housing via the handle assembly, wherein: The handle assembly includes a side plate, a locking mechanism and a driving part. The side plate is locked and installed on the cleaning roller through the locking mechanism. The side plate is connected to the cleaning roller through the locking mechanism. The driving part moves into the cleaning roller under the action of external force and drives the locking mechanism to unlock the cleaning roller, so that the handle assembly and the cleaning roller are in a separable state.

2. The floor brush of a surface cleaning device according to claim 1, characterized in that: A locking position is provided in the cleaning roller, and the locking mechanism includes an end cover and a locking member movable relative to the end cover. The locking member moves along the radial direction of the cleaning roller to have a locking position locked with the locking position and an unlocking position unlocked with the locking position.

3. The floor brush of a surface cleaning device according to claim 2, characterized in that: The locking mechanism also includes a transmission member arranged in the end cover, and the driving part can be movably arranged on the side plate to have a separated state separated from the transmission member and a driving state that drives the transmission member to move and drive the locking member to switch from the locked position to the unlocked position through the transmission member.

4. The floor brush of a surface cleaning device according to claim 3, characterized in that: The roller brush unit further includes a damping member abutting against the driving portion, wherein the damping member is configured to apply resistance to the driving portion so as to maintain the driving portion in the separated state.

5. The floor brush of a surface cleaning device according to claim 3, characterized in that: The transmission member has a driving surface, and the locking member has a mating surface capable of abutting against the driving surface. The driving portion moves inwardly along the axial direction of the cleaning roller relative to the end cover to drive the locking member to switch from the locked position to the unlocked position through the transmission member.

6. The floor brush of a surface cleaning device according to claim 2, characterized in that: A reset member abutting against the locking member is provided in the end cover, and the locking member is switched from the unlocking position to the locking position under the pushing of the reset member.

7. The floor brush of a surface cleaning device according to claim 1, characterized in that: A locking position is provided in the cleaning roller, and the locking mechanism includes an end cover and a deformable locking member fixed to the end cover. The locking member is elastically deformed under the extrusion of the inner wall of the cleaning roller and the end cover to have a locking position locked with the locking position and an unlocking position unlocked with the locking position.

8. The floor brush of a surface cleaning device according to claim 7, characterized in that: The inner wall of the cleaning roller is provided with a tripping position and a disengagement groove connected to the tripping position, the driving part is fixed to the end cover or the side plate, and the end cover has a first action, a second action and a third action that occur in sequence; In the first action, the end cover moves inward along the cleaning roller, driving the locking member to switch from the locked position locked in the locking position to the unlocked position falling into the tripping position; in the second action, the end cover moves outward along the cleaning roller and enters the escape groove after rotating a preset angle; in the third action, the end cover moves outward along the axial direction of the cleaning roller to drive the handle to detach from the cleaning roller.

9. The floor brush of a surface cleaning device according to claim 8, characterized in that: The locking mechanism further includes a booster member provided on one side of the end cover, and the booster member is used to apply force to the end cover to drive the end cover to perform the third action after the end cover completes the second action.

10. The floor brush of a surface cleaning device according to claim 7, characterized in that: The side plate includes a handle and a fixing member, wherein the handle is pivotally connected to the fixing member so that the handle has an initial state close to the cleaning roller and a deviated state in which the handle rotates relative to the end cover to deviate the other end of the side plate from the cleaning roller.

Images