Lifting equipment and cleaning equipment

Abstract

The present application discloses a lifting device and a cleaning appliance, which includes a lifting assembly, a protection assembly, and a drive assembly. In a process of lifting an object using the lifting device, an output end of the drive assembly outputs a driving force through the protection assembly to lift or lower the object via the lifting assembly. After the object is lifted or lowered, if the object is displaced due to an external force, the object applies a force to the protection assembly via the lifting assembly, and the protection assembly is separated from the drive assembly. In this case, no hard mechanical contact occurs between the drive assembly and the lifting assembly, and the structures of the lifting assembly and the drive assembly are not damaged. This improves the service life of the lifting device, improves the control accuracy of the lifting and lowering of the object by the lifting device, and improves the user experience.

Description

[Technical Field]

[0001] (CROSS-REFERENCE TO RELATED APPLICATIONS) This application claims priority to a Chinese patent filed with the State Intellectual Property Office of the People's Republic of China on December 30, 2022, bearing application number 202211735573.X and entitled "Lifting device and cleaning equipment," the entire contents of which are incorporated herein by reference.

[0002] TECHNICAL FIELD Embodiments of the present application relate to the field of cleaning technology, and in particular to lifting devices and cleaning equipment. [Background technology]

[0003] In the field of machinery, lifting devices are often used to raise or lower objects, but the inventor discovered that if an external force is applied to the object after it has been raised or lowered, the object will pull the transmission member of the lifting device, which will easily damage the internal structure of the lifting device. Taking a cleaning device as an example, in the prior art, a lifting device is usually used to raise and lower a cleaning brush, and if a user applies an external force to the brush and pulls it, the internal structure of the lifting device will easily be damaged, which will affect the use of the cleaning device and reduce the user experience. Summary of the Invention

[0004] The present application aims to solve at least one of the technical problems existing in the prior art or related art.

[0005] To that end, a first aspect of the present application provides a lifting device.

[0006] A second aspect of the present application provides a cleaning device.

[0007] In view of this, according to a first embodiment of the present invention, there is provided an elevator device, the elevator device comprising: a lifting assembly; a protection assembly connected to the lifting assembly; a drive assembly having an output end connected to the lifting assembly for raising or lowering the object through the protection assembly; When the object is moved by an external force, the protection assembly disengages from the drive assembly.

[0008] In one possible embodiment, the protection assembly comprises: a protective board connected to the lifting assembly; and an elastic member connected to the protective disc, the elastic member being used to apply an elastic force to the protective disc so that the protective disc is connected to the drive assembly.

[0009] In one possible embodiment, the protective disc is formed with meshing teeth on the side facing the drive assembly, and when the protective disc abuts against the drive assembly, the protective disc meshes with the drive assembly.

[0010] In one possible embodiment, the drive assembly rotates the protection board along a first direction or a second direction to drive the lifting assembly; When the protective plate rotates along a first direction, the object rises, and when the protective plate rotates along a second direction, the object falls; The angle of the end surface teeth of the interlocking teeth in the first direction is greater than the angle of the end surface teeth of the interlocking teeth in the second direction.

[0011] In one possible embodiment, the lifting assembly comprises: a pivot member connected to the protection assembly; a flexible connecting member having one end connected to the pivot member and the other end connected to the object; When the rotating member rotates, the flexible connecting member may be wound around the rotating member, The rotating member and the protective plate of the protective assembly are of an integral structure.

[0012] In one possible embodiment, the drive assembly comprises: a worm wheel connected to the lifting assembly via the protection assembly; a worm connected to the worm wheel; and a drive member connected to the worm.

[0013] In one possible embodiment, the lifting device comprises: The frame and The apparatus further includes a position identification assembly provided on the frame for identifying the position of the lifting assembly.

[0014] In one possible embodiment, the position identification assembly comprises: a pivot arm having one end hingedly connected to the frame; a first protrusion provided on the other end of the pivot arm; a second protrusion provided on the lifting assembly; a switch provided on the pivot arm on a side remote from the lift assembly; When the second protrusion contacts the first protrusion, the switch is triggered by the pivot arm.

[0015] In one possible embodiment, the position identification assembly comprises: a reset member connected to the pivot arm; and / or a buffer member provided on the pivot arm and positioned between the pivot arm and the switch; and / or The pivot arm is made of a resilient material.

[0016] According to a second embodiment of the present application, there is provided a cleaning device, the cleaning device comprising: The lifting device according to any one of the above technical solutions; a cleaning assembly connected to the lifting assembly of the lifting device.

[0017] In one possible embodiment, the cleaning device comprises: The cleaning assembly further comprises a housing, the cleaning assembly comprising a mounting bracket and a cleaning brush, the cleaning brush being pivotally connected to the mounting member, one end of the mounting bracket being hingedly connected to the housing, and the lifting assembly being connected to the mounting bracket.

[0018] Compared with the prior art, the present invention includes at least the following beneficial effects:

[0019] The lifting device provided in the embodiments of the present application comprises a lifting assembly, a protection assembly, and a drive assembly. In the process of lifting or lowering an object using the lifting device, the drive assembly outputs a driving force through the protection assembly to raise or lower the object via the lifting assembly. After the object has been raised or lowered, if the object is displaced due to an external force, the object applies a force to the protection assembly through the lifting assembly, and the protection assembly detaches from the drive assembly. In this case, no hard mechanical contact occurs between the drive assembly and the lifting assembly, and the structures of the lifting assembly and the drive assembly are not damaged. This can improve the service life of the lifting device, improve the control accuracy of the lifting and lowering of objects by the lifting device, and improve the user experience.

[0020] Various other advantages and benefits will become apparent to those skilled in the art upon reading the following detailed description of the preferred embodiments. The drawings are for the purpose of illustrating the preferred embodiments only and are not to be construed as limiting the present application. In addition, like elements are designated by like reference numerals in all the drawings. [Brief explanation of the drawings]

[0021] [Figure 1] 1 is a schematic structural diagram of a lifting device according to an embodiment of the present invention, viewed from a first angle; [Figure 2] 1 is a schematic structural view of a protection assembly for a lifting device according to an embodiment of the present invention, viewed from one angle; [Figure 3]1 is a schematic structural diagram of a lifting device according to an embodiment of the present invention, viewed from a second angle. [Figure 4] FIG. 10 is a schematic structural diagram of a lifting device according to an embodiment of the present invention, viewed from a third angle. [Figure 5] FIG. 10 is a schematic structural diagram of a lifting device according to an embodiment of the present invention, viewed from a fourth angle. [Figure 6] FIG. 10 is a schematic structural diagram of a lifting device according to an embodiment of the present invention, viewed from a fifth angle. [Figure 7] 1 is a schematic structural diagram of a cleaning device according to an embodiment of the present invention, viewed from a first angle. [Figure 8] FIG. 2 is a schematic structural diagram of a cleaning device according to an embodiment of the present invention, viewed from a second angle. [Figure 9] FIG. 10 is a schematic structural diagram of a cleaning device according to an embodiment of the present invention, viewed from a third angle. [Figure 10] FIG. 10 is a schematic structural diagram of a cleaning device according to an embodiment of the present invention, viewed from a fourth angle. [Figure 11] 1 is a schematic diagram of an embodiment of a lifting device provided by the present application, omitting a lifting assembly;

[0022] The correspondence between the reference numerals and the names of the components in FIGS. 1 to 11 is as follows: 100 lifting device, 110 lifting assembly, 120 protection assembly, 130 drive assembly, 140 frame, 150 position identification assembly, 210 cleaning assembly, 220 housing, 111 rotating member, 112 flexible connecting member, 113 slider, 121 protective plate, 122 elastic member, 131 worm wheel, 132 worm, 133 driving member, 151 rotating arm, 152 first protrusion, 153 second protrusion, 154 switch, 155 buffer member, 1211 occlusal teeth, 211 Mounting bracket, 212 Cleaning brush. DETAILED DESCRIPTION OF THE INVENTION

[0023] In order to provide a better understanding of the above technical solution, the technical solution of the embodiments of the present application is described in detail below with reference to the drawings and specific examples. It should be understood that the embodiments of the present application and the specific features in the embodiments are merely detailed explanations of the technical solution of the embodiments of the present application, and do not limit the technical solution of the present application. It should be understood that the embodiments of the present application and the technical features in the embodiments can be combined with each other unless there is a contradiction.

[0024] As shown in Figures 1 to 6, according to a first embodiment of the present invention, there is provided a lifting device 100 including a lifting assembly 110, a protection assembly 120 connected to the lifting assembly 110, and a drive assembly 130 having an output end connected to the lifting assembly 110 for raising or lowering an object via the protection assembly 120, wherein when the object is moved by an external force, the protection assembly 120 provides the lifting device 100 with a mechanism for detaching from the drive assembly 130.

[0025] The lifting device 100 provided in the embodiments of the present application comprises a lifting assembly 110, a protection assembly 120, and a drive assembly 130. During the process of lifting or lowering an object using the lifting device 100, the drive assembly 130 outputs a driving force through the protection assembly 120 to raise or lower the object via the lifting assembly 110. After the object has been raised or lowered, if the object is displaced due to an external force, the object applies a force to the protection assembly 120 via the lifting assembly 110, and the protection assembly 120 separates from the drive assembly 130. In this case, no hard mechanical contact occurs between the drive assembly 130 and the lifting assembly 110, which does not damage the structures of the lifting assembly 110 and the drive assembly 130. This can improve the service life of the lifting device 100, improve the control accuracy of lifting and lowering objects by the lifting device 100, and improve the user experience.

[0026] Taking the lifting device 100 provided in the embodiments of the present application as an example, when it is applied to a cleaning appliance, the brush of the cleaning appliance may be connected to the lifting assembly 110, and in the process of use, the cleaning appliance can have two operating states, one of which is an operating state in which the brush is raised and the cleaning appliance does not need to perform cleaning work, and the other is an operating state in which the brush is lowered and the brush comes into contact with the surface to be cleaned and the cleaning appliance can perform the cleaning job. The lifting device 100 provided in the embodiments of the present application takes into consideration that in some working situations, a user may pull the brush to drive it up or down, and in particular, some users may pull the brush to lower it, and during the process of the brush displacement, the force of the brush is transmitted to the protection assembly 120 via the lifting assembly 110, and the protection assembly 120 may detach from the drive assembly 130. When a user pulls the brush, the lifting assembly 110 does not come into hard mechanical contact with the drive assembly 130, which prevents wear on the lifting assembly 110 and the drive assembly 130 and improves the service life of the lifting assembly 110.

[0027] In some examples, the drive assembly 130 may have a power end and an output end, where the power end is connected to the output end and applies kinetic energy to the output end, which is used to move the lift assembly 110. The output end may be a structure capable of driving the lift assembly 110, such as a pivot shaft or a transmission member.

[0028] As shown in Figures 1 and 2, in one possible embodiment, the protective assembly 120 includes a protective plate 121 connected to the lifting assembly 110 and an elastic member 122 connected to the protective plate 121, and the elastic member 122 is used to apply an elastic force to the protective plate 121 so that the protective plate 121 is connected to the drive assembly 130.

[0029] In this technical solution, a structural element of the protection assembly 120 is further provided. The protection assembly 120 may include a protection plate 121 and an elastic member 122. When the object connected to the lifting device 100 is not subjected to an external force, the elastic member 122 can apply an elastic force to the protection plate 121, so that the protection plate 121 and the drive unit 130 are connected. In this case, the drive assembly 130 can output a driving force to drive the lifting assembly 110. Furthermore, the lifting assembly 110 can raise or lower the object. Meanwhile, when the object is moved by an external force, the elastic member 122 can apply an elastic force to the protection plate 121, so that the protection plate 121 and the drive unit 130 are connected. In this case, the drive assembly 130 can output a driving force to drive the lifting assembly 110. Furthermore, the lifting assembly 110 can raise or lower the object. The applied force is transmitted onto the protective board 121 via the lifting assembly 110, and this force causes the protective board 121 to resist the elastic force of the elastic member 122 and detach from the drive assembly 130. In this case, no hard mechanical contact occurs between the drive assembly 130 and the lifting assembly 110, and the structures of the lifting assembly 110 and the drive assembly 130 are not damaged, thereby improving the service life of the lifting device 100, improving the control accuracy of the lifting and lowering of the object by the lifting device 100, and improving the user experience. Furthermore, when the external force on the object is released, the elastic member 122 applies elastic force to the protective board 121 again, causing the protective board 121 to abut against the drive assembly 130 and re-establishing the connection between the protective board 121 and the drive assembly 130. When the drive assembly 130 is activated, the lifting assembly 110 can again lift or lower the object.

[0030] As shown in Figures 1 and 2, in one possible embodiment, the protective plate 121 has an engaging tooth 1211 formed on the side facing the drive assembly 130, and when the protective plate 121 abuts against the drive assembly 130, the protective plate 121 engages with the drive assembly 130.

[0031] In this technical solution, a structural element of the protective board 121 is further provided, and a meshing tooth 1211 is formed on the side of the protective board 121 facing the drive assembly 130. When the object connected to the lifting device 100 is not subjected to an external force, the elastic member 122 applies an elastic force to the protective board 121, and the meshing tooth 1211 on the protective board 121 meshes with the drive assembly 130, so that the protective board 121 and the drive assembly 130 are connected. In this case, when the drive assembly 130 outputs a driving force, it can drive the lifting assembly 110, and the lifting assembly 110 can raise or lower the object. However, when the object moves due to an external force, the elastic member 122 can apply an elastic force to the protective board 121, and the meshing tooth 1211 on the protective board 121 can mesh with the drive assembly 130, so that the protective board 121 and the drive assembly 130 are connected. The force is transmitted onto the protective plate 121 via the lifting assembly 110, and this force causes the protective plate 121 to resist the elastic force of the elastic member 122, disengaging the engaging teeth 1211 on the protective plate 121 from the drive assembly 130, allowing the protective plate 121 to disengage from the drive assembly 130. In this case, no hard mechanical contact occurs between the drive assembly 130 and the lifting assembly 110, and the structures of the lifting assembly 110 and the drive assembly 130 are not damaged, the service life of the lifting device 100 can be improved, the control accuracy of the lifting and lowering of objects by the lifting device 100 can be improved, and the user experience can be improved. Furthermore, when the object loses the external force, the elastic member 122 applies elastic force to the protective plate 121 again, causing the protective plate 121 to abut against the drive assembly 130, so that the meshing teeth 1211 on the protective plate 121 can mesh with the drive assembly 130 again, thereby re-establishing the connection relationship between the protective plate 121 and the drive assembly 130, and when the drive assembly 130 is activated, the object can be raised or lowered again by the lifting assembly 110.

[0032] In one possible embodiment, the drive assembly 130 rotates the protective plate 121 along a first direction or a second direction to drive the lifting assembly 110, and when the protective plate 121 rotates along the first direction, the object rises, and when the protective plate 121 rotates along the second direction, the object falls, and the angle of the end surface teeth of the engaging teeth 1211 in the first direction is greater than the angle of the end surface teeth of the engaging teeth 1211 in the second direction.

[0033] In this technical solution, the operating method of the drive assembly 130 and the structural elements of the meshing teeth 1211 are further provided, so that when the drive assembly 130 rotates the protection board 121 along a first direction, the lifting assembly 110 can lift the object. In this operating situation, the protection assembly 120 disposed between the lifting assembly 110 and the drive assembly 130 is subjected to a large torque, so that the angle of the end surface teeth of the meshing teeth 1211 facing the first direction becomes larger, so that the protection board 121 can better withstand the large torque. When the drive assembly 130 rotates the protective panel 121 along the second direction, the lifting assembly 110 can lower the object. In this operating situation, the protection assembly 120 disposed between the lifting assembly 110 and the drive assembly 130 is subjected to a small torque, so that the angle of the end surface teeth of the meshing teeth 1211 facing the first direction becomes smaller, thereby reducing the operating resistance of the drive assembly 130 and improving the driving efficiency.

[0034] In some examples, the first direction may be counterclockwise and the second direction may be clockwise, and the worm wheel 131 and worm 132 connected to the driving member 133 of the lifting assembly 110 provide a power source, and when the rotating member 111 is viewed from the top of the rotating member 111 in a plan view, when the lifting assembly 110 lifts an object, the worm wheel 132 rotates, and the worm wheel rotates the rotating member 111 counterclockwise via the protective disk 121, contracting the flexible connecting member 112. Because the protective disk 121 between the worm wheel and the rotating member 111 of the flexible connecting member 112 is subjected to a large torque, the angle of the end surface teeth of the meshing teeth 1211 needs to be large. When the lifting device 100 needs to lower the cleaning assembly 210, the drive member 133 rotates in the reverse direction, the flexible connecting member 112 is loosened, and the force transmitted from the worm wheel to the rotating member 111 is reduced. In this case, the protective plate 121 does not need to bear a large torque, so the angle of the end face teeth is set small.

[0035] The elastic member 122 may be a spring, and the protective torque of the protective disk 121 is affected by the angle of the end teeth, the material, and the pressure of the spring. The positive pressure of the spring creates a rotational resistance at the position of the end teeth, and this resistance is the protective force of the protective disk 121. Based on this, by using the elastic member 122 and the protective disk 121, it is possible to prevent the entire lifting device 100 from being subjected to a large torque load and damaging the mechanism.

[0036] As shown in Figures 1 and 3, in one possible embodiment, the lifting assembly 110 includes a rotating member 111 connected to the protection assembly 120, and a flexible connecting member 112 having one end connected to the rotating member 111 and the other end for connecting to an object, wherein when the rotating member 111 rotates, the flexible connecting member 112 can be wrapped around the rotating member 111, and wherein the rotating member 111 and the protective panel 121 of the protection assembly 120 are an integral structure.

[0037] The technical solution further provides a structural element of the lifting assembly 110, which includes an adapter and a flexible connecting member 112. During the operation of the lifting device 100, the drive assembly 130 and the protection assembly 120 are connected, and when the drive assembly 130 rotates the protection assembly 120, the protection assembly 120 can rotate the connecting member. When the drive assembly 130 rotates the protection board 121 along a first direction, the flexible connecting member 112 is wound around the rotating member 111, reducing the effective length of the lifting assembly 110 and causing an object connected to the other end of the flexible connecting member 112 to be lifted. When the drive assembly 130 rotates the protection board 121 along a second direction, the flexible connecting member 112 expands through the rotating member 111, increasing the effective length of the lifting assembly 110 and causing an object connected to the other end of the flexible connecting member 112 to be lowered.

[0038] It should be noted that the rotating member 111 may be disk-shaped so that the flexible connecting member 112 can be easily wrapped around the rotating member 111, and the flexible connecting member 112 may be a rope, wire, or steel wire.

[0039] 2, in this technical solution, in order to facilitate the rotation of the rotating member 111 and to easily protect the drive assembly 130, the rotating member 111 can rotate synchronously with the protective plate 121, and therefore the rotating member 111 and the protective plate 121 may be integrally formed so as to facilitate the rotation of the rotating member 111 synchronously with the protective plate 121 and improve the strength of the protective plate 121 and the rotating member 111. On the other hand, when the protective plate 121 and the rotating member 111 are integrally formed, the elastic member 122 can also output a force to the protective plate 121 by applying an elastic force to the rotating member 111, which makes it easier to layout the elastic member 122.

[0040] As shown in FIG. 2, the protective plate 121 and the rotating member 111 may be separate structures, for example, designed separately along the direction of the arrow, and the protective plate 121 may be connected onto the rotating member 111 by means of screws, welding, adhesives, etc., and the rotating member 111 and the protective plate 121 may be connected by another adapter to adjust the installation position of the protective plate 121 and facilitate sufficient engagement between the protective plate 121 and the drive assembly 130.

[0041] As shown in Figures 1 and 4, in one possible embodiment, the drive assembly 130 includes a worm wheel 131 connected to the lifting assembly 110 via the protection assembly 120, a worm 132 connected to the worm wheel 131, and a drive member 133 connected to the worm 132.

[0042] This technical solution further provides structural elements of the drive assembly 130, which may include a worm wheel 131, a worm 132, and a drive member 133. In use, the drive member 133 outputs a driving force to act on the worm 132, the worm 132 engages with the worm wheel 131, and the rotation of the worm 132 can rotate the worm wheel 131. Furthermore, when the worm wheel 131 is connected to the protection assembly 120, the protection assembly 120 can output a driving force to act on the lifting assembly 110. When an object connected to the lifting assembly 110 is subjected to an external force and undergoes unexpected displacement, the protection assembly 120 disengages from the worm wheel 131 of the drive assembly 130, so that no hard mechanical contact occurs between the worm wheel 131 of the drive assembly 130 and the rotating member 111 of the lifting assembly 110, and the structures of the lifting assembly 110 and the drive assembly 130 are not damaged, thereby improving the service life of the lifting device 100, improving the control accuracy of the lifting and lowering of objects by the lifting device 100, and improving the user experience.

[0043] In this technical solution, the worm wheel 131, the worm 132 and the driving member 133 form the driving assembly 130, which can stably output driving force and facilitate the raising or lowering of an object. The protective assembly 120 and the worm wheel 131 are connected via meshing teeth 1211. A spring is provided at the lower end of the protective plate 121 as the elastic member 122, which can tightly fit the teeth between the protective plate 121 and the worm wheel 131. The worm 132 can drive the worm wheel 131, and the worm wheel 131 can further drive and rotate the protective plate 121 through the meshing teeth 1211. The flexible connecting member 112 is wound or unwound to raise or lower the main brush. When a user pulls an object by hand, the protective plate 121 rotates following the flexible connecting member 112, and it is difficult for the worm wheel 131 to drive the worm 132 to rotate, and due to the large resistance, the attached parts of the meshing teeth 1211 separate, the protective plate 121 descends, the teeth on both ends are misaligned, and the worm wheel 131 no longer rotates following the protective plate 121, thereby protecting the drive assembly 130.

[0044] As shown in Figures 4 and 11, in one possible embodiment, the lifting device 100 further comprises a frame 140 and a position identification assembly 150 mounted on the frame 140 for identifying the position of the lifting assembly 110.

[0045] In this technical solution, the lifting device 100 may include a frame 140 and a position identification assembly 150. By installing the position identification assembly 150, the position of the lifting assembly 110 can be recognized, and the height to which the object is raised or lowered can be determined. Based on this, accurate control of the lifting or lowering of the object can be realized.

[0046] In some examples, the lifting device 100 may further include a controller communicatively connected to the position identification assembly 150, and the controller may stop powering the drive assembly 130 or supply a constant small current to the drive assembly 130 based on a drive control signal sent from the position identification assembly 150 so that the rotating member 111 maintains its current position, thereby accurately controlling the lifting and lowering of the object and reducing the failure rate.

[0047] As shown in Figures 4, 5 and 6, in one possible embodiment, the position identification assembly 150 comprises a pivoting arm 151 hinged at one end to the frame 140, a first protrusion 152 provided at the other end of the pivoting arm 151, a second protrusion 153 provided on the lifting assembly 110, and a switch 154 provided on the side of the pivoting arm 151 away from the lifting assembly 110, wherein when the second protrusion 153 contacts the first protrusion 152, the switch 154 is triggered by the pivoting arm 151.

[0048] The technical solution further provides structural elements for the position identification assembly 150, which may include a pivoting arm 151, a first protrusion 152, a second protrusion 153, and a switch 154. When the drive assembly 130 is activated and transmits driving force to the lifting assembly 110 via the protection assembly 120, the pivoting member 111 of the lifting assembly 110 pivots. During the pivoting process, the second protrusion 153 can contact the first protrusion 152, and the second protrusion 153 and the first protrusion 152 can move the pivoting arm 151 so that it abuts against the switch 154. In this case, the position identification device can identify the status of the lifting assembly 110. Furthermore, the interface realizes accurate control of the lifting and lowering of objects and reduces the failure rate.

[0049] In one possible embodiment, the position identification assembly 150 further comprises a reset member connected to the pivot arm 151 .

[0050] In this technical solution, the position identification assembly 150 may further include a reset member. By installing the reset member, when the second protrusion 153 moves away from the first protrusion 152 as the rotating member 111 moves, the reset member can apply a reset force to the rotating arm 151 to reset the rotating arm 151, making it easier to detect for the next position identification.

[0051] As shown in FIG. 4, in one possible embodiment, the position identification assembly 150 further comprises a buffer member 155 mounted on the pivot arm 151 and positioned between the pivot arm 151 and the switch 154 .

[0052] In this technical solution, the position identification assembly 150 may further include a buffer member 155, and the pivot arm 151 can abut against the switch 154 through the buffer member 155, thereby avoiding damage to the switch 154 due to hard contact between the pivot arm 151 and the switch 154 and improving the service life of the switch 154.

[0053] In one possible embodiment, the pivot arm 151 is made of an elastic material.

[0054] In this technical solution, the pivot arm 151 may be made directly of an elastic material, in which case the pivot arm 151 and the switch 154 come into contact with each other, preventing the pivot arm 151 from crushing the switch 154 and improving the service life of the switch 154.

[0055] The lifting device 100 provided in the embodiment of the present application is equipped with a press-type position identification assembly 150, which allows for highly accurate recognition even in dusty working conditions compared to the prior art photoelectric switch 154, and is advantageous for accurately controlling the lifting device 100. When the rotating member 111 of the lifting device 100 rotates to a predetermined position, a second protrusion 153 on the rotating member 111 presses the rotating arm 151, thereby triggering the switch 154. The rotating arm 151 is provided with a reset member around the rotation center, which returns the rotating arm 151 from the button-pressing position to the non-triggering state, and a buffer member 155 is provided in the area where the rotating arm 151 presses the button, i.e., a plastic cantilever is used to press the button, which prevents the switch 154 from being damaged by excessive force and protects the service life of the button.

[0056] In some examples, the drive member 133 of the drive assembly 130 may be a motor, and the logic for identification and control by the position identification assembly 150 may include the following.

[0057] Normal operating conditions: The motor rotates forward (counterclockwise), the state of the switch 154 of the position identification assembly 150 changes from 0 to 1 to 0 (1 indicates that the switch 154 has been triggered, 0 indicates that it has not been triggered, and 010 indicates that it has rotated around the trigger point position), the motor stops, and it rises to a predetermined position.

[0058] The motor rotates in the reverse direction (rotates clockwise), the state of the switch 154 changes from 0 to 1 to 0, the motor stops, and the motor descends to a predetermined position.

[0059] Abnormal operating conditions: The initial state of switch 154 is 1, which means that the object is in an intermediate state (not lowered to a predetermined position or not raised to a predetermined position).

[0060] The motor rotates forward, the state of the switch 154 changes from 1 to 0, the motor stops, and the motor rises to a predetermined position.

[0061] The motor rotates in the reverse direction, the state of the switch 154 changes from 1 to 0, the motor stops, and it descends to a predetermined position.

[0062] Through the above process, it is possible to transition from an abnormal state to a normal state.

[0063] As shown in Figures 7 to 11, according to a second embodiment of the present invention, a cleaning device is provided that includes a lifting device 100 of any one of the above technical solutions and a cleaning assembly 210 connected to the lifting assembly 110 of the lifting device 100.

[0064] In the cleaning machine provided in the embodiment of the present application, the cleaning machine is equipped with the lifting device 100 of any one of the above technical solutions, so the cleaning machine has all the beneficial effects of the lifting device 100 of the above technical solutions.

[0065] The cleaning device provided in the embodiments of the present application is provided with a lifting assembly 110 that allows the cleaning assembly 210 to be raised or lowered, allowing the cleaning device to have multiple operating states. For example, when the cleaning assembly 210 is fully raised, it can be lifted off the ground, in which case the cleaning device does not need to perform a cleaning job and can move quickly. Furthermore, for example, by controlling the cleaning assembly 210 to descend, the cleaning assembly 210 can come into contact with the cleaning surface and the cleaning device can perform a cleaning job. Meanwhile, the greater the downward movement of the cleaning assembly 210 of the cleaning device, the stronger the contact effect between the cleaning assembly 210 and the cleaning surface, and the better the cleaning effect of the cleaning device.

[0066] In the cleaning appliance provided in the embodiment of the present invention, the cleaning assembly 210 of the cleaning appliance may be connected to the lifting assembly 110, and in the process of use, the cleaning appliance can have two operating states, one of which is an operating state in which the cleaning appliance does not need to perform cleaning work when the cleaning assembly 210 is lifted, and the other is an operating state in which the cleaning assembly 210 is lowered, the brushes come into contact with the surface to be cleaned, and the cleaning appliance can perform a cleaning job. In the lifting device 100 provided in the embodiments of the present application, in some working situations, a user may pull the cleaning assembly 210 to drive the cleaning assembly 210 to raise or lower it. In particular, some users may pull the cleaning assembly 210 to lower it, and during the displacement of the cleaning assembly 210, the force of the cleaning assembly 210 may be transmitted to the protection assembly 120 via the lifting assembly 110, causing the protection assembly 120 to detach from the drive assembly 130. Considering this, when a user pulls the cleaning assembly 210, the lifting assembly 110 does not come into hard mechanical contact with the drive assembly 130, which prevents wear on the lifting assembly 110 and the drive assembly 130 and improves the service life of the lifting assembly 110 and the cleaning equipment.

[0067] In one possible embodiment, the cleaning device further comprises a housing 220, the cleaning assembly 210 comprising a mounting bracket 211 hingedly connected at one end to the housing 220 and a cleaning brush 212 pivotally connected to the mounting member, and the lifting assembly 110 connected to the mounting bracket 211.

[0068] In this technical solution, the cleaning device may further include a housing 220, and the cleaning assembly 210 may include a mounting bracket 211 and a cleaning brush 212. One end of the mounting bracket 211 is hingedly connected to the housing 220, and a lifting assembly 110 is further connected to the mounting member, so that the position of the cleaning brush 212 can be adjusted by displacing the mounting bracket 211 using the lifting assembly 110.

[0069] In some examples, the mounting bracket 211 has a mounting groove formed therein, and the lifting assembly 110 of the lifting device 100 further includes a slider 113 provided at one end of the flexible connecting member 112 away from the pivoting member 111, the slider 113 being provided within the mounting groove, and as the length of the flexible connecting member 112 shortens, the slider 113 can abut against a position regulating member on the groove wall of the mounting groove, so that the slider 113 can be driven to lift the mounting bracket 211 and further driven to raise the cleaning brush 212.

[0070] In this application, the terms "first," "second," and "third" are used for descriptive purposes only and should not be understood as indicating or implying relative importance. The term "plurality" refers to two or more unless otherwise limited. Terms such as "attached," "coupled," "connected," and "fixed" should all be understood broadly; for example, "connected" may mean fixedly connected, detachably connected, or integrally connected, and "connected" may mean directly connected or indirectly connected via an intermediate medium. Those skilled in the art may understand the specific meanings of the above terms in this application depending on the specific circumstances.

[0071] In the description of this application, it should be understood that terms indicating orientations or positional relationships, such as "upper," "lower," "left," "right," "front," and "rear," are orientations or positional relationships shown based on the drawings, and are used merely to make the application easier to explain and simplify the description, and do not indicate or suggest that the devices or units shown must have a specific orientation, be configured in a specific orientation, or be operated in a specific orientation, and therefore cannot be understood as limiting the application.

[0072] In the description herein, the terms "one embodiment," "some embodiments," "particular embodiment," etc., mean that the specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present application. Descriptive expressions of such terms in the description herein 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 any one or more embodiments or examples.

[0073] The above is merely a preferred embodiment of the present application, and is not intended to limit the present application. Various modifications and variations are possible for those skilled in the art. Any modifications, equivalent replacements, improvements, etc. made within the scope of the present application without departing from the spirit and principles of the present application should be included in the scope of the claims of the present application.

Claims

1. a lifting assembly; a protection assembly connected to the lifting assembly; a drive assembly having an output end connected to the lifting assembly for raising or lowering an object through the protection assembly; When the object is moved by an external force, the protection assembly disengages from the drive assembly. Lifting device.

2. The protection assembly includes a protection plate connected to the lifting assembly and an elastic member connected to the protection plate, the elastic member is used to apply an elastic force to the protective plate so that the protective plate is connected to the drive assembly; The lifting device according to claim 1 .

3. The protective plate has an engaging tooth formed on a side facing the drive assembly, and when the protective plate abuts against the drive assembly, the protective plate engages with the drive assembly. The lifting device according to claim 2 .

4. the drive assembly is used to rotate the protection panel along a first direction or a second direction so as to drive the lifting assembly; When the protective plate rotates along a first direction, the object rises, and when the protective plate rotates along a second direction, the object falls; An angle of the end surface teeth of the meshing teeth in a first direction is greater than an angle of the end surface teeth of the meshing teeth in a second direction. The lifting device according to claim 3.

5. The lifting assembly includes: a pivot member connected to the protection assembly; a flexible connecting member having one end connected to the pivot member and the other end for connecting to the object; When the rotating member rotates, the flexible connecting member may be wound around the rotating member; The rotating member and the protective plate of the protective assembly are integrally formed. The lifting device according to any one of claims 1 to 4.

6. The drive assembly includes: a worm wheel connected to the lifting assembly via the protection assembly; a worm connected to the worm wheel; a drive member connected to the worm; The lifting device according to any one of claims 1 to 4.

7. The frame and a position identification assembly provided on the frame for identifying a position of the lifting assembly. The lifting device according to any one of claims 1 to 4.

8. The position identification assembly includes: a pivot arm hinged at one end to the frame; a first protrusion provided on the other end of the pivot arm; a second protrusion provided on the lifting assembly; a switch provided on the pivot arm on a side away from the lift assembly; When the second protrusion contacts the first protrusion, the switch is triggered by the pivot arm. The lifting device according to claim 7.

9. The position identification assembly includes: a reset member connected to the pivot arm; and / or a buffer member provided on the pivot arm and positioned between the pivot arm and the switch; and / or The pivot arm is made of a resilient material. The lifting device according to claim 8.

10. The lifting device according to any one of claims 1 to 9; a cleaning assembly connected to the lifting assembly of the lifting device. cleaning equipment.

11. a housing, the cleaning assembly including a mounting bracket and a cleaning brush, the cleaning brush pivotally connected to a mounting member, one end of the mounting bracket hingedly connected to the housing, and the lifting assembly connected to the mounting bracket; 11. The cleaning device of claim 10.

Images