Cleaning device

Abstract

The cleaning equipment comprises a floor brush, a machine body and a first limiting structure, the floor brush comprises a base and a cleaning part connected to the base, and the floor brush can move forwards or backwards on the surface to be cleaned in the advancing direction. The machine body is rotatably connected to the base and has a first cleaning state and a second cleaning state relative to the floor brush. When the machine body is in the first cleaning state, the rotation angle of the machine body relative to the vertical direction is smaller than that of the machine body relative to the vertical direction when the machine body is in the second cleaning state. The first limiting structure has elasticity and can abut against the machine body so as to provide blocking force for limiting the machine body to move towards the surface to be cleaned, and when the machine body is in the first cleaning state, the blocking force of the first limiting structure on the machine body is larger than that of the first limiting structure on the machine body when the machine body is in the second cleaning state. Along with increase of the rotation angle of the machine body, the blocking force cannot be continuously increased, and the phenomenon that the risk of floor brush head warping is increased due to increase of the rotation angle of the machine body is improved.

Description

Technical Field

[0001] This invention relates to the field of surface cleaning technology, and in particular to a cleaning device. Background Technology

[0002] Taking floor scrubbers as an example, cleaning equipment typically includes a body and a floor brush, with a handle for user operation located on the body. The body usually integrates components such as a suction motor, a clean water tank for supplying cleaning solution, and a wastewater tank for collecting dirt, making it quite strenuous for the user to push and pull the machine using the handle. Prolonged holding and pushing of the machine can easily lead to user fatigue, negatively impacting the user experience.

[0003] In existing technologies, an elastic element is placed between the machine body and the floor brush. When the user tilts the machine body to push and pull the floor brush for cleaning, the elastic element stores energy due to the rotation of the machine body, thereby partially offsetting the pressure exerted on the user's hand by the weight of the machine body, achieving a labor-saving effect. Although this method improves and reduces the feeling of weight in the hand, it is prone to causing the floor brush to "lift up," reducing the downward pressure of the floor brush on the ground and affecting the cleaning effect. Summary of the Invention

[0004] In view of the above problems, this application provides a cleaning device.

[0005] To achieve the above objectives, the embodiments of this application provide the following technical solutions: This application provides a cleaning device, the cleaning device comprising: A floor brush includes a base and a cleaning component connected to the base, the floor brush being able to move forward or backward along a direction of travel on the surface to be cleaned; The body is rotatably connected to the base, and the body has a first cleaning state and a second cleaning state relative to the floor brush; when the body is in the first cleaning state, the rotation angle of the body relative to the vertical direction is smaller than the rotation angle of the body relative to the vertical direction when the body is in the second cleaning state. The first limiting structure is elastic and is disposed in the floor brush to provide a blocking force to restrict the movement of the machine body toward the surface to be cleaned. When the machine body is in the first cleaning state, the blocking force of the first limiting structure on the machine body is greater than the blocking force of the first limiting structure on the machine body when the machine body is in the second cleaning state.

[0006] The first cleaning state is the regular cleaning state, and the second cleaning state is the flat cleaning state for low spaces such as under the bed and under the sofa.

[0007] The blocking force can limit the movement of the device toward the surface to be cleaned, counteracting part of the downward gravity of the device, thereby improving the user's sense of weight in the hand and reducing fatigue during long-term cleaning.

[0008] During the cleaning process, when switching from the regular cleaning state to the flat cleaning state, the user will further increase the rotation angle of the machine body towards the surface to be cleaned behind the floor brush. Because the machine body experiences less resistance from the first limiting structure when in the second cleaning state with a larger rotation angle compared to the first cleaning state, the first limiting structure does not provide a continuously increasing resistance force as the machine body rotation angle increases. Therefore, even if the first limiting structure has a negative torque that could potentially cause the floor brush to "lift" due to its reaction force, this negative torque is correspondingly reduced, mitigating the increased risk of the floor brush lifting due to increased machine body rotation angle.

[0009] When the device is in the second cleaning state, the resistance of the first limiting structure to the device can be greater than or equal to 0, allowing for a smoother transition to the lying position and reducing the user's resistance during the transition, thus improving the user experience. If the device is in contact with the ground in the lying cleaning state, the support from the ground can reduce the user's grip effort, and the first limiting structure is not needed to provide resistance in this lying position.

[0010] Optionally, when the machine body is in the first cleaning state, the rotation angle of the machine body relative to the vertical direction is 20° to 80°; when the machine body is in the second cleaning state, the rotation angle of the machine body relative to the vertical direction is 80° to 90°.

[0011] Optionally, the body may also be in an upright position relative to the floor brush, and when the body is in the upright position, the rotation angle of the body relative to the vertical direction is -10° to 20°.

[0012] Optionally, the first limiting structure includes a first limiting member and a first elastic member, the first elastic member being connected to the first limiting member and the base respectively, and the first limiting member being movable relative to the base; When the machine body is in the first clean state, the first elastic element provides a blocking force to the machine body through the first limiting element. This first limiting structure is simple and reliable.

[0013] Optionally, the first limiting member can move up and down on the base in a vertical direction. When the machine body is in the second cleaning state, the height of the first limiting member in the vertical direction is lower than the height of the first limiting member in the vertical direction when the machine body is in the first cleaning state.

[0014] Optionally, the fuselage includes a rotating mechanism, and the first limiting member provides a blocking force to the fuselage by abutting against the rotating mechanism.

[0015] Optionally, when the machine body is in an upright state, the rotating mechanism is separated from the first limiting member; when the machine body enters the first cleaning state, the rotating mechanism begins to contact the first limiting member.

[0016] Optionally, the first limiting member has a limiting top surface and a limiting side surface, wherein the limiting side surface is adjacent to the limiting top surface; When the machine body is in the first cleaning state, the rotating mechanism abuts against the limiting top surface; When the machine body enters the second cleaning state, the rotating mechanism begins to abut against the limiting side.

[0017] Optionally, the rotating mechanism includes a rotating shaft and an outer edge disposed at the end of the rotating shaft. The outer edge is provided with a first protrusion, and the first protrusion has an adjacent end face and a side face. When the machine body is in the first cleaning state, the side of the first protrusion abuts against the limiting top surface; When the machine body is in the second clean state, the end face of the first protrusion abuts against the limiting side.

[0018] Optionally, the end face of the first protrusion is an arc-shaped end face, and the limiting side is a limiting inclined surface; When the first limiting member is at its lowest stroke position, the machine body is in a second clean state, and the arc-shaped end face is tangent to the limiting inclined surface.

[0019] Optionally, the end face of the first protrusion is an arc-shaped end face, and the limiting side is a limiting arc surface. When the first limiting member is at its lowest stroke position, the machine body is in the second cleaning state. The arc-shaped end face is tangent to the limiting arc surface, and the circle where the arc-shaped end face is located and the circle where the limiting arc surface is located are both concentric with the rotation center of the rotating mechanism relative to the floor brush.

[0020] By setting the limiting side as a limiting arc surface and setting the end face of the first protrusion as an arc-shaped end face, the two are configured such that when the first limiting member is in the lowest position, they are tangent and concentric. At this time, the blocking force generated by the first limiting member has almost no effect on the floor brush. On the contrary, the first limiting member has been compressed to the extreme, and it can use the pivot as a lever point to apply an upward force and convert it into the downward pressure of the floor brush. That is, in this state, the floor brush will not only not lift up, but will even fit more tightly with the ground.

[0021] Optionally, the side of the first protrusion is provided with a protrusion, and when the machine body is in the first cleaning state, the side of the first protrusion abuts against the limiting top surface through the protrusion.

[0022] Optionally, the first limiting member is located behind the rotation center of the fuselage.

[0023] Optionally, the outer edge is further provided with a second protrusion, and the cleaning device further includes a second limiting structure provided on the base. When the machine body is in an upright state, the second limiting structure abuts against the second protrusion to restrict the movement of the machine body toward the first cleaning state; when the machine body is in the first cleaning state and the second cleaning state, the second limiting structure is separated from the second protrusion.

[0024] Optionally, the second limiting structure is located below the fuselage. The second limiting structure includes a second limiting member and a second elastic member. The second elastic member is connected to the second limiting member and the base respectively. The second limiting member is movable relative to the base. When the fuselage is in the upright position, the second limiting member abuts against the second protrusion. During the process of switching between the upright state and the first cleaning state, the second limiting member avoids the second protrusion by relying on the elastic deformation of the second elastic member; When the body is in the first cleaning state and the second cleaning state, the second limiting member separates from the second protruding part, and the second elastic member restores its elastic deformation so that the second limiting member is reset.

[0025] Optionally, the outer edge further includes a circumferential surface concentric with the rotating shaft, the first protrusion and the second protrusion being spaced apart on the circumferential surface, the first protrusion having a fan-shaped cross-section perpendicular to the surface to be cleaned along the travel direction, and the second protrusion having a triangular cross-section perpendicular to the surface to be cleaned along the travel direction.

[0026] Optionally, the base has a first suction channel, the body has a second suction channel, and the cleaning device further includes a connecting pipe connecting the first suction channel and the second suction channel. The second limiting structure and the first limiting structure are symmetrically arranged on both sides of the connecting pipe in the lateral direction, wherein the lateral direction is perpendicular to the direction of travel of the floor brush along the surface to be cleaned. Attached Figure Description

[0027] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0028] Figure 1This application provides schematic diagrams showing the handle in different states relative to the body in the cleaning device provided in some embodiments. Figure 2 A top view of a floor brush in a cleaning apparatus provided in some embodiments of this application; Figure 3 A schematic diagram of the rotating mechanism of the floor brush in a cleaning device provided in some embodiments of this application; Figure 4 for Figure 2 Sectional view along line AA; Figure 5 A schematic diagram of a portion of the structure of the floor brush in a cleaning device provided in some embodiments of this application, wherein the machine body is in a second cleaning state; Figure 6 One of the schematic diagrams of a part of the structure of the floor brush in the cleaning device provided in some embodiments of this application, where the machine body is in a first cleaning state; Figure 7 The second schematic diagram of a portion of the structure of the floor brush in the cleaning device provided in some embodiments of this application, where the machine body is in a first cleaning state; Figure 8 A schematic diagram of the structure of a floor brush in a cleaning device provided in some embodiments of this application, with the device body in an upright position; Figure 9 for Figure 5 The image shows a partial structural diagram of the floor brush.

[0029] Explanation of reference numerals in the attached figures: 1. Floor brush; 2. Body; 21. Handle; 22. Rotating mechanism; 23. Shaft; 231. First protrusion; 2311. Arc-shaped end face; 232. Second protrusion; 233. Clearance groove; 234. Circumferential surface; 235. Protrusion; 236. Outer edge; 24. Base; 241. Suction port; 25. Cleaning component; 26. Water tank; 3. Suction motor; 4. Wastewater tank; 5. Clean water tank; 6. Connecting pipe; 70. First limiting structure; 71. First limiting component; 711. Limiting top surface; 712. Limiting side surface; 72. First elastic component; 73. First chamber; 80. Second limiting structure; 81. Second limiting component; 811. Rear side of the second limiting component; 82. Second elastic component; 83. Second chamber. Detailed Implementation

[0030] To make the technical solution and beneficial effects of the present invention more apparent and understandable, a detailed description is provided below by listing specific embodiments. The accompanying drawings are not necessarily drawn to scale, and local features may be enlarged or reduced to more clearly show the details of the local features; unless otherwise defined, the technical and scientific terms used herein have the same meanings as those in the technical field to which this application pertains.

[0031] In the description of this invention, the terms "horizontal," "upper," "lower," "front," "rear," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," and "counterclockwise," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the purpose of simplifying the description of this invention and do not indicate that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. In other words, they should not be construed as limitations on this invention.

[0032] In this invention, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating the relative importance of the indicated features or the number of indicated technical features. Therefore, a feature defined as "first" or "second" can explicitly include at least one of those features. In the description of this invention, "a plurality of" means at least two, such as two, three, etc.

[0033] In this invention, unless otherwise explicitly defined, the terms "installation," "connection," "linking," "fixing," and "setting," etc., should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral part; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can also refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0034] See Figure 1 One end of the main body 2 is equipped with a handle 21, and the other end is rotatably connected to the floor brush 1. The user holds the handle 21 and rotates the main body 2 relative to the floor brush 1 to the desired angle, facilitating the subsequent pushing and pulling of the floor brush 1 along the direction of travel during cleaning. The back-and-forth movement of the floor brush 1 achieves cleaning of the surface to be cleaned. Surfaces to be cleaned include floors, carpets, walls, etc. For ease of description, the following description uses floors as an example.

[0035] Typically, the floor brush 1 has a cleaning component 25 at its front, and the connection between the body 2 and the floor brush 1 is roughly located at the rear of the floor brush 1. The cleaning component 25 is usually in the form of a roller brush, but it can also be in other forms such as a conveyor belt. As the floor brush 1 moves back and forth across the surface to be cleaned, it cleans the floor through the cleaning component 25.

[0036] Understandably, the greater the downward pressure of the floor brush 1 on the floor, the easier it is for the cleaning component 25 to remove stains from the floor, resulting in a better cleaning effect.

[0037] In existing technologies, the elastic element located at the connection between the machine body and the floor brush is mostly a torsion spring or a coil spring. Taking a torsion spring as an example, the two ends of the torsion spring act on the machine body and the floor brush respectively. When the handle is tilted backward from a position roughly perpendicular to the surface to be cleaned, the torsion spring is twisted and stores energy, generating a restoring torque that attempts to pull the machine body back to an upright position, thereby reducing the user's feeling of weight in their hand. The greater the rotation angle of the machine body, the greater the deformation of the torsion spring, and the greater the restoring torque generated by the torsion spring. However, at the same time, the negative torque generated by the torsion spring on the floor brush is also greater. The negative torque is in the opposite direction to the restoring torque. The negative torque easily causes the front part of the floor brush to be lifted, resulting in a "lifting" phenomenon, which reduces the downward pressure of the roller brush on the ground and reduces the cleaning effect. Moreover, this "lifting" phenomenon increases with the increase of the tilt angle of the machine body.

[0038] In particular, the torsion spring is affected by the relatively large rotation angle of the brush body. For example, when the brush body rotates to a flat position, the deformation of the torsion spring may exceed its limit, leading to its breakage. Even if the torsion spring does not break, long-term use will accelerate its fatigue and shorten its service life.

[0039] Another point worth noting is that in some cases, when the body is rotated to its flattest position relative to the floor brush, the body can be supported by the surface to be cleaned. At this time, the torsion spring is not needed to provide the restoring torque. However, the deformation of the torsion spring is often the greatest at this time, the restoring torque is the greatest, and the floor brush is most likely to "lift up".

[0040] To improve the above problems, combined with Figures 1 to 9 The embodiments of this application provide the following technical solutions.

[0041] See Figures 1 to 4 The cleaning device provided in this application embodiment includes a floor brush 1, a body 2 and a first limiting structure 70. The floor brush 1 includes a base 24 and a cleaning component 25 connected to the base 24. The floor brush 1 can move forward or backward along the direction of travel on the surface to be cleaned.

[0042] The body 2 is rotatably connected to the base 24, and the body 2 is in a first cleaning state relative to the brush 1 (see...). Figure 6 and Figure 7 ) and second clean state (see Figure 4 and Figure 5 ).

[0043] Figure 1 In the diagram, B and C exemplarily illustrate two extreme positions of the fuselage 2 in the first clean state. The state of the fuselage 2 at point D is the second clean state.

[0044] When the fuselage 2 is in the first cleaning state, the rotation angle of the fuselage 2 relative to the vertical direction is smaller than the rotation angle of the fuselage 2 relative to the vertical direction when the fuselage 2 is in the second cleaning state (see...). Figure 1(α), where the vertical direction is perpendicular to the direction of travel. The first limiting structure 70 is disposed in the floor brush 1 to provide a blocking force to restrict the movement of the body 2 toward the surface to be cleaned. When the body 2 is in the first cleaning state, the blocking force of the first limiting structure 70 on the body 2 is greater than the blocking force of the first limiting structure 70 on the body 2 when the body 2 is in the second cleaning state.

[0045] For example: the first cleaning state is the regular cleaning state, and the second cleaning state is the flat cleaning state for low spaces such as under the bed and under the sofa.

[0046] The blocking force can limit the movement of the body 2 toward the surface to be cleaned, counteract part of the downward gravity of the body 2, thereby improving the user's sense of gravity in the hand and reducing fatigue during long-term holding and cleaning.

[0047] During the cleaning process, when switching from the regular cleaning state to the flat cleaning state, the user will further increase the rotation angle of the body 2 towards the surface to be cleaned behind the floor brush 1. Since the body 2 experiences less resistance from the first limiting structure 70 when in the second cleaning state with a larger rotation angle compared to the first cleaning state, the first limiting structure 70 does not provide a continuously increasing resistance force as the body 2 rotation angle increases. Therefore, even if the first limiting structure 70 has a negative torque that could cause the floor brush 1 to "lift" due to its reaction force, this negative torque is correspondingly reduced, mitigating the increased risk of the floor brush 1 lifting due to the increased rotation angle of the body 2.

[0048] When the device body 2 is in the second cleaning state, the obstruction force of the first limiting structure 70 on the device body 2 can be greater than or equal to 0, which makes the transition of the device body 2 to the flat position smoother and reduces the resistance felt by the user during the process of switching the device body 2 to the flat position, thus improving the user experience. If the device body 2 is in contact with the ground in the flat cleaning state, the support force of the ground on the device body 2 can reduce the user's holding force, and the obstruction force provided by the first limiting structure 70 on the device body is not required in this flat position.

[0049] In some optional embodiments, when the body 2 is in the first cleaning state, the rotation angle of the body 2 relative to the vertical direction is 20° to 80°; when the body 2 is in the second cleaning state, the rotation angle of the body 2 relative to the vertical direction is 80° to 90°.

[0050] To clearly show the positional changes of the body 2 and the first limiting member 71 in their interaction. Figures 5 to 8 The complete fuselage structure 2 was not shown. Among them, Figure 6 and Figure 7 Two extreme positions of the fuselage 2 in the first clean state are shown respectively, exemplarily. Figure 6The rotation angle of the middle fuselage 2 relative to the vertical direction is approximately 30°. Figure 7 The rotation angle of the middle fuselage 2 relative to the vertical direction is approximately 75°. Figure 4 and Figure 5 In the second cleaning state, the rotation angle of the fuselage 2 relative to the vertical direction is approximately 90°.

[0051] When the body 2 is in the first cleaning state, the body 2 has a wider range of selectable rotation angles, which can better adapt to different cleaning scenarios or better match the needs of different users such as height and usage habits.

[0052] In some optional embodiments, the body 2 is also in an upright position relative to the brush 1. When the body 2 is in the upright position, the rotation angle of the body 2 relative to the vertical direction is -10° to 20°. Wherein, when the body 2 is at 0° relative to the vertical direction, the body 2 is basically perpendicular to the surface to be cleaned.

[0053] For example, when the fuselage 2 is in an upright position, the rotation angle of the fuselage 2 relative to the vertical direction can also be -10° to 0°, 0°-10°, -10° to 10°, etc.

[0054] Figure 1 In the middle, the fuselage at point A is in an upright position.

[0055] See Figures 5 to 7 In some optional embodiments, the first limiting structure 70 includes a first limiting member 71 and a first elastic member 72. The first elastic member 72 is connected to the first limiting member 71 and the base 24, respectively, and the first limiting member 71 is movable relative to the base 24. When the body 2 is in a first clean state, the first elastic member 72 provides a blocking force to the body 2 through the first limiting member 71. This first limiting structure 70 is simple and reliable.

[0056] In the embodiments illustrated in this application, when the fuselage 2 is in a first clean state and a second clean state, the first limiting structure 70 provides a blocking force to the fuselage 2 at all times.

[0057] contrast Figure 7 and Figure 5 The first limiting member 71 can move up and down in the vertical direction on the base 24. When the body 2 is in the second cleaning state, the height of the first limiting member 71 in the vertical direction is lower than the height of the first limiting member 71 in the vertical direction when the body 2 is in the first cleaning state.

[0058] The first limiting member 71, which moves up and down, can provide the body 2 with an upward blocking force that is roughly perpendicular to the surface to be cleaned. Consequently, the force exerted by the first limiting member 71 on the floor brush 1 is also basically vertically downward. The pressure of the floor brush 1 on the ground will not be weakened, and the "lifting" problem will not occur.

[0059] During the transition from the first cleaning state to the second cleaning state, as the rotation angle of the fuselage 2 gradually increases, although the deformation of the first elastic element 72 also gradually increases, the blocking force provided by the first elastic element 72 does not always gradually increase. For example, this can be achieved by decomposing the elastic force of the first elastic element 72 through a wedge structure.

[0060] For example, the first elastic element 72 may be a compression spring, a pressure plate, or a similar structure. See also Figure 4 The first elastic element 72 can be housed within the first chamber 73. The first chamber 73 can both limit the movement of the first elastic element 72, ensuring that the first elastic element 72 provides a stable and reliable elastic force, and also provide a certain degree of protection for the first elastic element 72. In addition, the side wall of the first chamber 73 can also provide a guide groove for the movement of the first limiting element 71, so that the first limiting element 71 can move stably and reliably along the guide groove.

[0061] In another implementation not illustrated in this application, the first limiting structure 70 may also exclude the first elastic element 72 and adopt an elastic first limiting element 71, such as an elastic rubber block. The above purpose can also be achieved by utilizing the elasticity of the first limiting element 71 itself.

[0062] See Figure 3 In some embodiments, the fuselage 2 includes a rotating mechanism 22, and the first limiting member 71 provides a blocking force to the fuselage 2 by abutting against the rotating mechanism 22. The fuselage 2 is rotatably connected to the base 24 via the rotating mechanism 22, so that the first limiting structure 70 is located near the rotation center of the fuselage 2, which allows the blocking force to be used more directly to reduce the weight of the fuselage 2. Moreover, by utilizing the structure of the rotating mechanism 22 itself in cooperation with the first limiting structure 70, no additional structure is required, which is beneficial to improving space utilization.

[0063] In some alternative embodiments, when the body 2 is in an upright state, the rotating mechanism 22 is separated from the first limiting member 71; when the body 2 enters the first cleaning state, the rotating mechanism 22 begins to contact the first limiting member 71.

[0064] When the body 2 is in an upright position, its rotation angle relative to the vertical direction is small, and its center of gravity is basically above the floor brush 1. The user requires little or no additional force to balance the body 2. The rotating mechanism 22 is separated from the first limiting member 71, so the body 2 does not need the first limiting structure 70 to provide resistance. Only when the body 2 enters the first cleaning state does the user begin to feel the burden on the body 2, at which point the first limiting member 71 begins to provide resistance, allowing for a more precise match to the user's needs.

[0065] contrast Figure 5 and Figure 6When the body 2 is in the first clean state and the second clean state, the body 2 abuts against different positions of the first limiting member 71 respectively.

[0066] See Figure 6 When the fuselage 2 is in the first clean state, the elastic force stored in the first elastic element 72 is primarily used to provide resistance. See also Figure 5 When the body 2 is in the second clean state, the first elastic element 72 provides a blocking force a and a component force b at an angle to the direction of the blocking force a through the first limiting element 71. The component force b dissipates part of the elastic force, and the blocking force a is reduced. This method of changing the blocking force by changing the contact position is simple and reliable.

[0067] When the body 2 is in the first cleaning state, since there is basically no force component in other directions, the force of the first elastic element 72 acting on the floor brush 1 is also basically vertically downward. As a result, the pressure of the floor brush 1 on the ground will not be weakened, and there will be no "lifting" problem.

[0068] Compared to torsion spring or coil spring solutions, the first limiting structure 70 of this application embodiment is in a relatively separated state from the rotating mechanism 22 of the body 2. The structural design of this application is more flexible. When the body 2 is in the second cleaning state, even if a component force is generated, the direction and magnitude of the component force can be reduced through the flexible structural design to reduce the impact on the downward pressure of the floor brush 1, and may even increase the downward pressure of the floor brush 1 on the ground.

[0069] See Figure 5 and Figure 6 In some optional embodiments, the first limiting member 71 has a limiting top surface 711 and a limiting side surface 712, with the limiting side surface 712 adjacent to the limiting top surface 711. When the machine body 2 is in a first cleaning state, the rotating mechanism 22 abuts against the limiting top surface 711. When the machine body 2 enters a second cleaning state, the rotating mechanism 22 begins to abut against the limiting side surface 712.

[0070] When a user performs routine cleaning, the process of pushing and pulling the cleaning device involves a change in the rotation angle of the main body 2, which is essentially the first cleaning state. In the first cleaning state, the rotating mechanism 22 (specifically referring to the first protrusion 231 mentioned below) slides back and forth along the limiting top face. Based on... Figure 6 In the indicated orientation, when the user rotates the device clockwise (i.e., the device 2 rotates towards the ground, increasing the rotation angle of the device 2 relative to the vertical direction), the rotating mechanism 22 moves forward along the limiting top surface 711. Conversely, when the user rotates the device counterclockwise (i.e., the device rotates away from the ground, decreasing the rotation angle of the device relative to the vertical direction), the rotating mechanism 22 slides backward along the limiting top surface 711. The limiting top surface 711 is preferably... Figure 6 The horizontal plane shown.

[0071] When the body 2 switches from the first cleaning state to the second cleaning state, as the rotation angle of the body 2 increases, the pressure of the first protrusion 231 against the first limiting member 71 gradually increases, and the first protrusion 231 can gradually slide from the limiting top surface 711 to the limiting side surface 712. Conversely, when the body 2 resets from the second cleaning state to the first cleaning state, the first protrusion 231 can also gradually slide from the limiting side surface 712 to the limiting top surface 711 until it leaves the limiting top surface 711 and separates from the first limiting member 71, so that the body 2 can return to the upright state.

[0072] The limiting side 712 extends downwards. When cleaning low-ceilinged spaces, the body 2 is essentially in the second cleaning state. In the second cleaning state, rotating the body 2 clockwise causes the first protrusion 231 to gradually slide downwards along the limiting side 712 as the rotation angle of the body 2 relative to the vertical direction increases, until the first limiting member 71 moves downwards to its lowest travel position (see...). Figure 5 At this point, the fuselage 2 is at its lowest position and can contact the ground, thus providing support to the fuselage 2. When the fuselage 2 rotates counterclockwise to reset, the first protrusion 231 gradually slides upward along the limiting side 712.

[0073] In some optional embodiments, the rotating mechanism 22 includes a rotating shaft 23 and an outer edge 236 disposed at the end of the rotating shaft 23. The outer edge 236 is provided with a first protrusion 231, and the first protrusion 231 has an end face and a side face disposed adjacent to each other. When the body 2 is in a first clean state, the side face of the first protrusion 231 abuts against the limiting top surface 711. When the body 2 is in a second clean state, the end face of the first protrusion 231 abuts against the limiting side face 712.

[0074] The outer edge 236 can be an integral structure with the rotating shaft 23, or it can be a separate structure. In the separate structure, the outer edge 236 can be fitted onto the outside of the rotating shaft 23.

[0075] The first protrusion 231 can reduce interference between the rotating shaft 23 and the first limiting member 71 during rotation.

[0076] See Figure 3 The first protrusion 231 protrudes from the outer edge 236 away from the pivot, and the outer edge 236 is also provided with a relief groove 233 in the circumferential direction, so as to effectively avoid the first limiting member 71 during the rotation of the fuselage 2 (see Figure 6 and Figure 8 ).

[0077] The rotating shaft 23 is not limited to a cylindrical shaft; it can also be a hollow shaft or an irregularly shaped shaft. For example... Figure 9 The shaft 23 is also provided with a notch in the middle to avoid the connecting pipe 6, and both ends of the shaft 23 in the lateral direction are provided with an outer edge 236.

[0078] For example, the end face of the first protrusion 231 is an arc-shaped end face 2311.

[0079] In the embodiment illustrated in this application, the end face of the first protrusion 231 is an arc-shaped end face 2311, and the limiting side 712 is a limiting arc surface. When the first limiting member 71 is at its lowest travel position, see [reference needed]. Figure 5 The machine body 2 is in the second cleaning state, the arc-shaped end face 2311 is tangent to the limiting arc surface, and the circle where the arc-shaped end face 2311 is located and the circle where the limiting arc surface is located are both concentric with the rotation center O of the brush of the rotating mechanism 22.

[0080] By setting the limiting side 712 as a limiting arc surface and setting the end face of the first protrusion 231 as an arc-shaped end face, the two are configured such that when the first limiting member 71 is in the lowest position, the two are tangent and in a concentric state. At this time, the blocking force generated by the first limiting member 71 has almost no effect on the floor brush. On the contrary, the first limiting member 71 has been compressed to the extreme, and it can use the pivot as a lever point to apply an upward force and convert it into the downward pressure of the floor brush. That is, in this state, the floor brush will not only not lift up, but will even fit more tightly with the ground.

[0081] In some other embodiments not illustrated in this application, the limiting side 712 is a limiting slope; when the first limiting member 71 is at its lowest stroke position, the body 2 is in a second clean state, and the arc-shaped end face 2311 is tangent to the limiting slope.

[0082] The tangency of the arc-shaped end face 2311 and the limiting side 712 allows the fuselage 2 to transition more smoothly to the lowest flat position close to the ground.

[0083] In the preferred embodiment illustrated in this application, see [reference]. Figure 6 The first limiting member 71 is located behind the rotation center O of the body 2 (also referring to the rotation center O of the rotating mechanism 22). The rearward setting of the first limiting structure 70 can further reduce the impact on the downward pressure of the floor brush 1, and further ensure the improvement of the "lifting" problem at the front of the floor brush 1.

[0084] The base 24 may be provided with a groove or a hole, and the rotating shaft 23 may be embedded or inserted into the groove or hole to ensure the smooth rotation of the body 2 relative to the base 24.

[0085] See Figure 6 In some embodiments, the side of the first protrusion 231 is provided with a protrusion 235. When the body 2 is in the first cleaning state, the side of the first protrusion 231 abuts against the limiting top surface 711 through the protrusion 235. The protrusion 235 can reduce the contact area between the first protrusion 231 and the limiting top surface 711, and improve the smoothness of the relative brush rotation of the body 2 in the first cleaning state.

[0086] In some alternative embodiments, when the body 2 is in a first clean state, the elastic force stored in the first elastic element 72 is approximately positively correlated with the rotation angle of the body 2.

[0087] When the device body 2 is in the first cleaning state, although the weight of the device body 2 remains unchanged, the lever arm between the center of gravity of the device body 2 and the handhold fulcrum changes. Within a certain range of rotation angles, the handhold weight felt by the user will increase as the rotation angle increases. When the device body 2 is in the first cleaning state, the elastic force stored in the first elastic element 72 is positively correlated with the rotation angle of the device body 2, which can better adapt to this change in handhold weight.

[0088] In some optional embodiments, the outer edge 236 is further provided with a second protrusion 232, and the cleaning device also includes a second limiting structure 80. The second limiting structure 80 is disposed on the base 24. When the body 2 is in an upright state, the second limiting structure 80 abuts against the second protrusion to restrict the body 2 from moving toward the first cleaning state. When the body 2 is in the first cleaning state and the second cleaning state, the second limiting structure 80 is separated from the second protrusion 232.

[0089] When the cleaning equipment is not in a cleaning state, the body 2 can stand stably on the floor brush 1 by relying on the contact between the second protrusion 232 and the second limiting structure 80, maintaining an upright state without external assistance. When cleaning is required, the user moves the handle 21 along... Figure 1 When the body 2 is rotated clockwise as indicated by the arrow, the second protrusion 232 separates from the second limiting structure 80 due to the external force applied by the user, thus releasing the limiting function of the second limiting structure 80. Conversely, when the body 2 needs to be returned to an upright position, the user rotates the body 2 counterclockwise, and the second protrusion 232 returns to the state of abutting against the second limiting structure 80.

[0090] The second limiting structure 80 and the first limiting structure 70 are two relatively independent structures. In the embodiment illustrated in this application, the second limiting structure 80 and the first limiting structure 70 are arranged side by side approximately along the direction of travel, wherein the second limiting structure 80 is located on the front side of the body 2 relative to the rotation center O of the ground brush 1, and the first limiting structure 70 is located on the rear side of the rotation center O.

[0091] When the fuselage 2 is in an upright position, the second protrusion 232 abuts against the second limiting structure 80, but the first protrusion 231 is separated from the first limiting structure 70. When the fuselage 2 is in a clean state (including the first clean state and the second clean state), the second protrusion 232 is separated from the second limiting structure 80, but the second protrusion 232 abuts against the first limiting structure 70.

[0092] In some alternative embodiments, the second limiting structure 80 is located below the body 2. In the prior art, the limiting structure that maintains the body 2 in an upright state is located on the front side of the body 2. However, some cleaning devices, in order to reduce the weight of the body 2, transfer the water tank 26 (including a clean water tank and / or a wastewater tank) from the body 2 to the base 24. In this case, the water tank 26 is located on the front side of the body 2. If the limiting structure is located on the water tank 26, it will make it difficult to disassemble the water tank 26 and reduce the limiting reliability of the limiting structure. In this application, by setting the second limiting structure 80 on the base 24 and below the body 2, the position of the water tank 26 can be effectively avoided, ensuring a stable and reliable upright state, and the structural layout is also more reasonable.

[0093] See Figure 5 In one implementation, the second limiting structure 80 includes a second limiting member 81 and a second elastic member 82. The second elastic member 82 is connected to both the second limiting member 81 and the base 24. The second limiting member 81 is movable relative to the base 24. When the fuselage 2 is in an upright state, the second limiting member 81 abuts against the fuselage 2. During the switching process between the upright state and the first cleaning state, the second limiting member 81 avoids the second protrusion 232 due to the elastic deformation of the second elastic member 82. When the fuselage 2 is in both the first and second cleaning states, the second limiting member 81 separates from the second protrusion 232, and the second elastic member 82 restores its elastic deformation to reset the second limiting member 81. This second limiting structure 80 is simple and reliable.

[0094] The second elastic element 82 can be a compression spring, a sheet, or an elastic rubber component.

[0095] The elastic avoidance force provided by the second elastic member 82 is approximately perpendicular to the surface to be cleaned and is approximately parallel to the movement direction of the first limiting member 71 relative to the base 24.

[0096] See Figure 4 Alternatively, the second elastic member 82 can be housed within the second chamber 83. The second chamber 83 can both limit the movement of the second elastic member 82, ensuring that it provides a stable and reliable elastic force, and also provide a certain degree of protection for the second elastic member 82. In addition, the second chamber 83 can also guide the movement of the second limiting member 81, making its movement stable and reliable.

[0097] In another implementation, the second elastic member 82 can be omitted, and a second elastic limiting member 81 can be used instead. The elasticity of the second limiting member 81 can also avoid the body 2, thus achieving the switching between the upright state and the cleaning state.

[0098] See Figure 5In some optional embodiments, the outer edge 236 further includes a circumferential surface 234 concentric with the rotating shaft 23. The first protrusion 231 and the second protrusion 232 are spaced apart on the circumferential surface 234. The cross-section of the first protrusion 231 perpendicular to the surface to be cleaned along the travel direction is fan-shaped, and the cross-section of the second protrusion 232 perpendicular to the surface to be cleaned along the travel direction is triangular. This limiting method has a simple structure and good reliability.

[0099] by Figure 8 Taking the indicated orientation as an example, when the body 2 switches from an upright state to the first cleaning state, the second protrusion 232 rotates clockwise and presses down on the second limiting member 81 during the rotation. The second limiting member 81 moves downward, compressing the second elastic member 82. When the second protrusion 232 passes the top of the second limiting member 81 and separates from it, the second elastic member 82 drives the second limiting member 81 to reset (approximately). Figures 8 to 6 (State change process). When the body 2 subsequently switches from the first cleaning state to the upright state, the second protrusion 232 rotates counterclockwise and presses down on the second limiting member 81 during the rotation. The second limiting member 81 moves downward, compressing the second elastic member 82. When the second protrusion 232 returns to its original position relative to the second limiting member 81, that is, when the front side of the second protrusion 232 abuts against the rear side 811 of the second limiting member 81 again, the second elastic member 82 drives the second limiting member 81 to return to its original position (approximately...). Figures 6 to 8 (The process of state change).

[0100] See Figure 9 In some optional embodiments, the base 24 has a first suction channel, the body 2 has a second suction channel, and the cleaning device also includes a connecting pipe 6 that connects the first suction channel and the second suction channel. The connecting pipe 6 is symmetrically provided with a second limiting structure 80 and a first limiting structure 70 on its lateral sides, wherein the lateral side is perpendicular to the direction of travel of the floor brush 1 along the surface to be cleaned.

[0101] The second limiting structure 80 and the first limiting structure 70 can each be set to one, or they can be set as follows: Figure 9 Two of each are shown. In a preferred embodiment, at least two of the second limiting structure 80 and the first limiting structure 70 are independently provided, and at least two second limiting structures 80 are symmetrically arranged on both sides of the transverse direction of the connecting pipe 6, which can further improve the reliability of the fuselage 2 in maintaining an upright state.

[0102] At least two first limiting structures 70 are also symmetrically arranged on both sides of the connecting tube 6 in the lateral direction, which can further ensure the effect of reducing the feeling of gravity when holding the hand.

[0103] The connecting pipe 6 is typically a flexible hose or corrugated pipe to accommodate the rotational movement at the connection point between the machine body 2 and the floor brush 1. To clearly demonstrate the structure of the connecting pipe 6, Figure 2 , Figure 4and Figure 9 The connecting pipe 6 is shown separately from the rotating mechanism 22. In the actual product, the connecting pipe 6 can rotate synchronously with the rotating mechanism 22.

[0104] In some embodiments, the cleaning equipment has a suction motor 3 on the body 2. The suction motor 3 provides suction force to draw the garbage on the ground sequentially through the first suction channel, the connecting pipe 6, and the second suction channel to the wastewater tank 4. The wastewater tank 4 can be installed on the body 2. In addition, the body 2 can also be equipped with a clean water tank 5, which provides cleaning liquid for wet cleaning of the cleaning component 25.

[0105] The entrance to the first suction channel is the suction port 241 located behind the cleaning component 25. The garbage on the ground enters the first suction channel through the suction port 241.

[0106] In the embodiment illustrated in this application, the cleaning component 25 is a roller brush, and the floor brush 1 may also be equipped with a drive motor to drive the roller brush to rotate. When the floor brush 1 moves on the ground, the drive motor drives the roller brush to rotate, thereby improving the cleaning effect on the ground.

[0107] The cleaning equipment in this application includes, but is not limited to, floor scrubbers, sweepers, electric mops, and combined washing and mopping machines.

[0108] Other structures of cleaning equipment not mentioned in this application can be found in the prior art and will not be described in detail here.

[0109] The various embodiments or implementation methods described in this specification are presented in a progressive manner. Each embodiment focuses on the differences from other embodiments, and the same or similar parts between the embodiments can be referred to each other.

[0110] In the description of this specification, references to "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with an embodiment or example is included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0111] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application.

Claims

1. A cleaning device, characterized in that, The cleaning equipment includes: A floor brush includes a base and a cleaning component connected to the base, the floor brush being able to move forward or backward along a direction of travel on the surface to be cleaned; The body is rotatably connected to the base, and the body has a first cleaning state and a second cleaning state relative to the floor brush; when the body is in the first cleaning state, the rotation angle of the body relative to the vertical direction is smaller than the rotation angle of the body relative to the vertical direction when the body is in the second cleaning state. The first limiting structure is elastic and is disposed in the floor brush to provide a blocking force to restrict the movement of the machine body toward the surface to be cleaned. When the machine body is in the first cleaning state, the blocking force of the first limiting structure on the machine body is greater than the blocking force of the first limiting structure on the machine body when the machine body is in the second cleaning state.

2. The cleaning equipment according to claim 1, characterized in that, When the machine body is in the first cleaning state, the rotation angle of the machine body relative to the vertical direction is 20° to 80°; when the machine body is in the second cleaning state, the rotation angle of the machine body relative to the vertical direction is 80° to 90°.

3. The cleaning equipment according to claim 2, characterized in that, The body is also in an upright position relative to the floor brush. When the body is in the upright position, the rotation angle of the body relative to the vertical direction is -10° to 20°.

4. The cleaning equipment according to any one of claims 1 to 3, characterized in that, The first limiting structure includes a first limiting member and a first elastic member. The first elastic member is connected to the first limiting member and the base respectively. The first limiting member is movable relative to the base. When the body is in the first clean state, the first elastic member provides a blocking force to the body through the first limiting member.

5. The cleaning equipment according to claim 4, characterized in that, The first limiting member can move up and down on the base in a vertical direction. When the machine body is in the second cleaning state, the height of the first limiting member in the vertical direction is lower than the height of the first limiting member in the vertical direction when the machine body is in the first cleaning state.

6. The cleaning equipment according to claim 4, characterized in that, The fuselage includes a rotating mechanism, and the first limiting member provides a blocking force to the fuselage by abutting against the rotating mechanism.

7. The cleaning equipment according to claim 6, characterized in that, When the machine body is in an upright position, the rotating mechanism is separated from the first limiting member; when the machine body enters the first cleaning state, the rotating mechanism begins to contact the first limiting member.

8. The cleaning equipment according to claim 7, characterized in that, The first limiting member has a limiting top surface and a limiting side surface, wherein the limiting side surface is adjacent to the limiting top surface; When the machine body is in the first cleaning state, the rotating mechanism abuts against the limiting top surface; When the machine body enters the second cleaning state, the rotating mechanism begins to abut against the limiting side.

9. The cleaning equipment according to claim 8, characterized in that, The rotating mechanism includes a rotating shaft and an outer edge disposed at the end of the rotating shaft. The outer edge is provided with a first protrusion, and the first protrusion has an adjacent end face and a side face. When the machine body is in the first cleaning state, the side of the first protrusion abuts against the limiting top surface; When the machine body is in the second clean state, the end face of the first protrusion abuts against the limiting side.

10. The cleaning equipment according to claim 9, characterized in that, The end face of the first protrusion is an arc-shaped end face, and the limiting side face is a limiting inclined surface; When the first limiting member is at its lowest stroke position, the machine body is in a second clean state, and the arc-shaped end face is tangent to the limiting inclined surface.

11. The cleaning equipment according to claim 9, characterized in that, The end face of the first protrusion is an arc-shaped end face, and the limiting side is a limiting arc surface. When the first limiting member is at its lowest stroke position, the body is in the second cleaning state. The arc-shaped end face is tangent to the limiting arc surface, and the circles where the arc-shaped end face and the limiting arc surface are located are both concentric with the rotation center of the rotating mechanism relative to the floor brush.

12. The cleaning equipment according to claim 9, characterized in that, The side of the first protrusion is provided with a protrusion. When the machine body is in the first cleaning state, the side of the first protrusion abuts against the limiting top surface through the protrusion.

13. The cleaning equipment according to claim 4, characterized in that, The first limiting member is located on the rear side of the rotation center of the fuselage.

14. The cleaning equipment according to claim 9, characterized in that, The outer edge is also provided with a second protrusion. The cleaning device also includes a second limiting structure provided on the base. When the machine body is in an upright state, the second limiting structure abuts against the second protrusion to restrict the movement of the machine body toward the first cleaning state. When the machine body is in the first cleaning state and the second cleaning state, the second limiting structure is separated from the second protrusion.

15. The cleaning equipment according to claim 14, characterized in that, The second limiting structure is located below the fuselage. The second limiting structure includes a second limiting member and a second elastic member. The second elastic member is connected to the second limiting member and the base respectively. The second limiting member is movable relative to the base. When the fuselage is in the upright position, the second limiting member abuts against the second protrusion. During the process of switching between the upright state and the first cleaning state, the second limiting member avoids the second protrusion by relying on the elastic deformation of the second elastic member; When the body is in the first cleaning state and the second cleaning state, the second limiting member separates from the second protruding part, and the second elastic member restores its elastic deformation so that the second limiting member is reset.

16. The cleaning equipment according to claim 15, characterized in that, The outer edge also includes a circumferential surface concentric with the rotating shaft. The first protrusion and the second protrusion are spaced apart on the circumferential surface. The cross section of the first protrusion perpendicular to the surface to be cleaned along the travel direction is fan-shaped, and the cross section of the second protrusion perpendicular to the surface to be cleaned along the travel direction is triangular.

17. The cleaning equipment according to claim 14, characterized in that, The base has a first suction channel, the body has a second suction channel, and the cleaning device further includes a connecting pipe that connects the first suction channel and the second suction channel. The second limiting structure and the first limiting structure are symmetrically arranged on both sides of the connecting pipe in the lateral direction, wherein the lateral direction is perpendicular to the direction of travel of the floor brush along the surface to be cleaned.

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