Lifting mechanism and sweeper

Abstract

The utility model discloses a lifting mechanism and a sweeper, the lifting mechanism comprises an outer support, a rotating portion and a mounting portion, the rotating portion is rotatably connected with the outer support, the mounting portion is in threaded transmission connection with the rotating portion, the lifting mechanism further comprises a selection transmission portion, the selection transmission portion is arranged on the outer support, and the selection transmission portion is arranged on the outer support. And the control part is configured to control the mounting part to rotate unidirectionally. According to the lifting mechanism provided by the embodiment of the utility model, when the transmission part and the rotating part rotate along the positive and negative directions, the axial displacement of the mounting part and the rotating part can be realized, and the lifting of the mounting part is realized, so that the lifting mechanism is simple and reliable in structure and high in stability.

Description

[0001] Cross-references to related applications

[0002] This application claims priority to Chinese Patent Application No. 202421400813.5, filed on June 18, 2024, entitled "Lifting Mechanism and Sweeping Machine", the entire contents of which are incorporated herein by reference. Technical Field

[0003] This utility model relates to the field of household appliance technology, and in particular to a lifting mechanism and a sweeping machine. Background Technology

[0004] With technological advancements and changing lifestyles, intelligent cleaning equipment is gradually entering households and becoming an indispensable part of people's lives. Cleaning equipment such as robotic vacuum cleaners often have sweeping and mopping functions, using side brushes and roller brushes to perform sweeping and a mopping pad to perform mopping. However, in some technologies, the mopping pad on robotic vacuum cleaners cannot be raised or lowered. When the vacuum cleaner carries the mopping pad onto carpets, it causes carpet contamination. Furthermore, after cleaning, the cleaning components cause secondary pollution to the cleaned floor. Utility Model Content

[0005] This utility model aims to at least partially solve one of the technical problems in related technologies. Therefore, one objective of this utility model is to provide a lifting mechanism with a simple structure and high stability.

[0006] Another objective of this invention is to provide a sweeping machine that includes the aforementioned lifting mechanism.

[0007] The lifting mechanism according to an embodiment of the present utility model includes: an outer support, a rotating part, and a mounting part. The rotating part is rotatably connected to the outer support, and the mounting part is threadedly connected to the rotating part. The lifting mechanism further includes a selection transmission part, which is disposed on the outer support and configured to control the mounting part to rotate in one direction.

[0008] According to the lifting mechanism of this utility model embodiment, by setting a selective transmission part, the rotating part can achieve axial displacement between the mounting part and the rotating part when rotating in both directions, thereby realizing the lifting of the mounting part, making the lifting mechanism simple, reliable and highly stable.

[0009] In addition, the lifting mechanism according to the above embodiments of the present invention may also have the following additional technical features:

[0010] In some embodiments, the selection transmission unit includes a one-way transmission member, the one-way transmission member including a first part and a second part, the first part being connected to the outer bracket, the second part being connected to the mounting part, and the second part being rotatably connected to the first part in one direction.

[0011] In some embodiments, the first portion is fixedly connected to the outer bracket, and the second portion is circumferentially limited and axially movable connected to the mounting portion.

[0012] In some embodiments, one of the second portion and the mounting portion includes a guide groove, and the other includes a guide block movably disposed in the guide groove along the axial direction.

[0013] In some embodiments, the one-way transmission element is configured as a one-way bearing or a one-way clutch.

[0014] In some embodiments, the lifting mechanism further includes an elastic element that is drively connected to the mounting portion. The elastic element is configured to extend axially and its two ends are respectively connected to the rotating portion and the mounting portion.

[0015] In some embodiments, the elastic element is a spring.

[0016] In some embodiments, the lifting mechanism has a first circumferential direction and a second circumferential direction that are opposite to each other around the axis of the lifting mechanism, and a first axial direction and a second axial direction that are parallel to the axis and opposite to each other. The threaded drive connection is configured such that when the rotating part rotates along the first circumferential direction, it drives the mounting part to move along the first axial direction; when the rotating part rotates along the second circumferential direction, it drives the mounting part to move along the second axial direction. The selective drive part is configured to restrict the mounting part from rotating along the first circumferential direction and allow the mounting part to rotate along the second circumferential direction.

[0017] In some embodiments, the outer bracket has a chamber with one end open along an axial direction, and the mounting portion is telescopically disposed in the chamber, the mounting portion retracting into the chamber in the first axial direction and extending outward from the chamber in the second axial direction.

[0018] In some embodiments, the rotating part includes a first bushing, the mounting part includes a second bushing, and the first bushing and the second bushing are threaded together.

[0019] In some embodiments, the inner circumferential surface of the first bushing is provided with a first threaded portion, the outer circumferential surface of the second bushing is provided with a second threaded portion, a portion of the second bushing passes through the first bushing, and the second threaded portion and the first threaded portion are threadedly engaged.

[0020] In some embodiments, the mounting portion further includes a connecting portion disposed within the second bushing, and a portion of the first bushing passes through the connecting portion and the second bushing, the connecting portion forming a positioning cavity with one end open for mounting the wiping cloth assembly.

[0021] In some embodiments, the mounting portion is provided with a positioning portion for magnetically attaching and mounting the cloth assembly.

[0022] In some embodiments, the outer support includes a third sleeve, the mounting portion includes a second sleeve, the second sleeve and the third sleeve are arranged radially, and the selection transmission portion is disposed on the third sleeve and / or the second sleeve.

[0023] In some embodiments, at least a portion of the second sleeve passes through the third sleeve, and the selection transmission part is disposed between the third sleeve and the second sleeve.

[0024] The sweeper according to an embodiment of the present utility model includes: the aforementioned lifting mechanism, mop assembly, and drive unit; the mop assembly is mounted on the mounting unit; and the drive unit is throttle-connected to the rotating unit.

[0025] In some embodiments, the wiping cloth assembly includes a wiping cloth bracket and a wiping cloth disposed on the wiping cloth bracket, the wiping cloth bracket being detachably mounted on the mounting portion, and the wiping cloth bracket being magnetically engaged with the mounting portion. Attached Figure Description

[0026] Figure 1 This is a cross-sectional schematic diagram of the lifting structure according to an embodiment of the present utility model.

[0027] Figure 2 This is an exploded view of the rotating part and the lifting part of the lifting mechanism according to an embodiment of the present invention.

[0028] Figure 3 This is a cross-sectional schematic diagram of the lifting structure of some other embodiments of this utility model.

[0029] Figure 4 This is a cross-sectional schematic diagram of the lifting mechanism and the cloth assembly according to an embodiment of the present utility model.

[0030] Figure 5 This is a cross-sectional schematic diagram of the lifting mechanism and the cloth assembly of some other embodiments of the present invention.

[0031] Figure 6 This is a schematic diagram of the lifting mechanism, the cloth assembly, and the drive unit according to an embodiment of the present utility model.

[0032] Figure 7 This is a schematic diagram of a sweeper according to an embodiment of the present utility model.

[0033] Figure label:

[0034] Sweeping machine 1000, lifting mechanism 100, outer bracket 10, third sleeve 11, rotating part 20, first bushing 21, first threaded part 211, mounting part 30, second bushing 32, second threaded part 321, connecting part 33, positioning cavity 331, positioning part 34, second sleeve 35, selection transmission part 40, one-way transmission component 41, first part 411, second part 412, elastic component 50, wiping cloth assembly 200, wiping cloth bracket 210, wiping cloth 220, magnet 230, drive part 300. Detailed Implementation

[0035] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain this utility model, and should not be construed as limiting this utility model.

[0036] Combination Figure 1 The lifting mechanism 100 according to an embodiment of the present invention includes an outer support 10, a rotating part 20, and a mounting part 30. The rotating part 20 is rotatably connected to the outer support 10, and the mounting part 30 is threadedly connected to the rotating part 20. Specifically, the position of the outer support 10 can be relatively fixed, and the rotating part 20 can rotate relative to the outer support 10. The outer support 10 can support the rotation of the rotating part 20, improving the stability of the rotating part 20 during rotation. The mounting part 30 is threadedly connected to the rotating part 20, making the transmission structure between the mounting part 30 and the rotating part 20 simple and reliable, and facilitating the conversion of the rotational motion of the rotating part 20 into the axial motion of the mounting part 30.

[0037] The lifting mechanism 100 also includes a selection transmission unit 40, which is located on the outer support 10 and configured to control the unidirectional rotation of the mounting part 30. The mounting part 30 can rotate unidirectionally counterclockwise or clockwise. Taking the selection transmission unit 40 controlling the mounting part 30 to rotate only counterclockwise as an example, in this case, the selection transmission unit 40 prevents the mounting part 30 from rotating clockwise. When the rotating part 20 rotates clockwise, under the action of the threaded transmission and the selection transmission unit 40, it can achieve axial displacement between the mounting part 30 and the rotating part 20. When the rotating part 20 rotates counterclockwise, the selection transmission unit 40 no longer prevents the mounting part 30 from rotating, and the mounting part 30 can also rotate counterclockwise. For example, the rotating part 20 can be driven to rotate by a driving member. When the rotating part 20 starts to rotate, the transmission part 40 can apply a small force to the mounting part 30, so that the mounting part 30 has a time difference with the rotation of the rotating part 20 due to inertia. That is, at the moment the rotating part 20 starts to rotate, the mounting part 30 will not immediately rotate synchronously with the rotating part 20. When the rotating part 20 starts to rotate, the mounting part 30 can be axially displaced with the rotating part 20. After the rotating part 20 stabilizes to rotate, the mounting part 30 can continue to rotate counterclockwise under the drive of the rotating part 20.

[0038] Of course, the transmission unit 40 can also control the mounting unit 30 to rotate only in the clockwise direction. In this case, the transmission unit 40 controls the mounting unit 30 to not rotate in the counterclockwise direction. When the rotating unit 20 rotates in the clockwise direction, the mounting unit 30 can also rotate in the clockwise direction.

[0039] According to the embodiment of the present utility model, the lifting mechanism 100 controls the mounting part 30 to be unidirectionally rotatable by setting the transmission part 40. When the rotating part 20 rotates in both directions, the mounting part 30 and the rotating part 20 can be axially displaced, thereby realizing the lifting of the mounting part 30. This makes the structure of the lifting mechanism 100 simple, reliable and highly stable.

[0040] The mounting part 30 is threadedly connected to the rotating part 20. Exemplarily, both the mounting part 30 and the rotating part 20 may have threaded portions, which may extend spirally downwards along a first circumferential direction. The selective transmission part 40 is configured to control the mounting part 30 to rotate unidirectionally along the first circumferential direction. That is, when the rotating part 20 rotates along a second circumferential direction, the mounting part 30 cannot rotate under the action of the selective transmission part 40. Furthermore, when the rotating part 20 rotates along the first circumferential direction, the selective transmission part 40 can apply a small resistance to the mounting part 30 during initial startup. Under the action of the threaded transmission, the rotating part 20 and the mounting part 30 can undergo axial displacement. After the rotating part 20 stabilizes, the mounting part 30 can be driven to rotate along the first circumferential direction by the rotating part 20 under the action of the selective transmission part 40. When the rotating part 20 rotates along the second circumferential direction, the selective transmission part 40 can restrict the rotation of the mounting part 30. In other words, the selective transmission part 40 can apply an infinitely large resisting force to the mounting part 30, causing axial displacement between the rotating part 20 and the mounting part 30 under the action of the threaded transmission. By setting the selective transmission part 40, on the one hand, axial displacement between the mounting part 30 and the rotating part 20 can be achieved; on the other hand, the selective transmission part 40 can control the mounting part 30 to rotate in the first circumferential direction but not in the second circumferential direction opposite to the first circumferential direction, thus meeting the multi-scenario application requirements of the lifting mechanism 100.

[0041] For example, the lifting mechanism 100 can be applied to a sweeper 1000. The sweeper 1000 may include a drive unit 300, which is connected to a rotating unit 20. A mop assembly 200 may be mounted on a mounting unit 30. The lifting mechanism 100 can drive the mop assembly 200 to rise and fall. When the drive unit 300 rotates in a first circumferential direction, it can drive the rotating unit 20 to rotate in the same direction. When the drive unit 300 is initially started, the transmission unit 40 can apply a small damping force to the mounting unit 30, causing the mounting unit 30 to descend relative to the rotating unit 20 and drive the mop assembly 200 to descend and contact the working surface. At this time, the drive unit 300 can continue to drive the rotating unit 20 to rotate, thereby driving the mounting unit 30 to rotate and in turn driving the mop assembly 200 to rotate for mopping. When the drive unit 300 rotates along the second circumferential direction, it can drive the rotating unit 20 to rotate along the second circumferential direction. The transmission unit 40 can apply an infinitely large resistance force to the mounting unit 30, preventing the mounting unit 30 from rotating. Under the action of the threaded transmission, the mounting unit 30 can rise relative to the rotating unit 20, and drive the wiping cloth assembly 200 to rise and leave the working surface. For example, the first circumferential direction can be the forward rotation direction of the drive unit 300, and the second circumferential direction can be the reverse rotation direction of the drive unit 300.

[0042] Combination Figure 3In some embodiments of this utility model, the lifting mechanism 100 may further include an elastic element 50, which is tractively connected to the mounting portion 30. Exemplarily, the elastic element 50 is tractively connected between the rotating portion 20 and the mounting portion 30. The elastic element 50 can apply an axial force to the mounting portion 30, driving the mounting portion 30 to undergo axial displacement. Exemplarily, when the rotating portion 20 rotates along the first circumferential direction, at the initial rotation of the rotating portion 20, the elastic element 50 can apply an axial force to the mounting portion 30, ensuring that the mounting portion 30 moves stably in the axial direction.

[0043] The elastic element 50 is connected to the mounting part 30 and drives the mounting part 30 to move axially when the mounting part 30 rotates. The elastic element 50 can drive the mounting part 30 and the rotating part 20 to produce axial displacement by applying elastic pressure to the mounting part 30, or it can apply elastic tension to the mounting part 30 to drive the mounting part 30 and the rotating part 20 to produce axial displacement. The elastic element 50 can be a spring, tension spring, rubber part, hydraulic drive part, etc.

[0044] The transmission unit 40 can be configured with different structures, such as a wedge-type one-way clutch, a one-way clutch, or a one-way bearing.

[0045] In addition, the rotating part 20 can be externally connected to a drive part 300, which can be connected to the rotating part 20 to drive the rotating part 20 to rotate.

[0046] The lifting mechanism 100 of this utility model embodiment can be applied to home appliances and can be used to drive the lifting of components. For example, it can be applied to a sweeping robot 1000. The lifting mechanism 100 can be connected to a mop 220. Specifically, the mounting part 30 can be equipped with the mop 220. When the mounting part 30 is lifted, it can drive the mop 220 to lift automatically. In different usage scenarios, the lifting mechanism 100 can drive the lifting of the mop 220 to improve the automation level of the sweeping robot 1000, simplify the user's operation, and improve the ease of use of the sweeping robot 1000.

[0047] Combination Figure 1In some embodiments of this utility model, the transmission part 40 may include a one-way transmission member 41. The one-way transmission member 41 includes a first part 411 and a second part 412. The first part 411 is connected to the outer bracket 10, and the second part 412 is connected to the mounting part 30. The second part 412 is rotatably connected to the first part 411 in one direction. Specifically, the first part 411 may be relatively fixed, and the second part 412 may rotate relative to the first part 411. The cooperation between the first part 411 and the second part 412 can only cause the second part 412 to rotate in one direction. The second part 412 is connected to the mounting part 30. Under the action of the one-way transmission member 41, the mounting part 30 can be controlled to rotate in one direction. When the mounting part 30 rotates in the opposite direction, the one-way transmission member 41 can lock the mounting part 30 to prevent the mounting part 30 from rotating. In addition, the first part 411 of the one-way transmission member 41 is connected to the outer bracket 10, and the second part 412 is connected to the mounting part 30, making the connection structure of the lifting mechanism 100 compact.

[0048] Furthermore, the first part 411 is fixedly connected to the outer bracket 10, wherein the outer bracket 10 can be relatively fixed, which can improve the structural stability of the first part 411, and the second part 412 is circumferentially limited and axially movable connected to the mounting part 30. In other words, the first part 411 is relatively fixed, and the second part 412 is rotatable relative to the first part 411, so that the second part 412 can drive the mounting part 30 to rotate in one direction. At the same time, the second part 412 does not move relative to the mounting part 30 in the circumferential direction, but is movable in the axial direction, so that when the first part 411 restricts the second part 412 from rotating, the second part cooperates with the mounting part 30, which facilitates the stable axial movement of the mounting part 30 and improves the working stability of the lifting mechanism 100.

[0049] One of the second part 412 and the mounting part 30 includes a guide groove, and the other includes a guide block movably disposed in the guide groove along the axial direction. Specifically, the second part 412 may include a guide groove, and the mounting part 30 may include a guide block movably disposed in the guide groove along the axial direction; or the mounting part 30 includes a guide groove, and the second part 412 includes a guide block movably disposed in the guide groove along the axial direction. The guide block slides within the guide groove to effectively limit the movement of the mounting part 30 and the second part 412 in the circumferential direction. When the transmission part 40 is selected to restrict the rotation of the mounting part 30, the rotating part 20 can drive the mounting part 30 to move axially under the action of the guide groove and the guide block, thereby improving the working stability of the lifting mechanism 100.

[0050] Combination Figure 3In some embodiments of this utility model, the elastic element 50 elastically connects the rotating part 20 and the mounting part 30. The elastic element 50 can drive the mounting part 30 and the rotating part 20 to generate axial displacement by applying elastic pressure to the mounting part 30, or it can apply elastic tension to the mounting part 30 to drive the mounting part 30 and the rotating part 20 to generate axial displacement. By directly connecting the elastic element 50 to the rotating part 20 and the mounting part 30, the lifting mechanism 100 is compact and it is convenient for the elastic element 50 to drive the mounting part 30 to move.

[0051] In some embodiments of this utility model, the elastic element 50 is a spring, which facilitates the processing and manufacturing of the lifting mechanism 100 and simplifies the structure of the lifting mechanism 100.

[0052] Combination Figure 3 In some embodiments of this utility model, the elastic member 50 is configured to extend axially and its two ends are respectively connected to the rotating part 20 and the mounting part 30. Specifically, the rotating part 20 is relatively fixed in the axial position. In other words, the rotating part 20 does not move axially. When the mounting part 30 moves axially, the rotating part 20 and the mounting part 30 are displaced axially. Specifically, when the mounting part 30 rises, the elastic member 50 can be compressed. When the mounting part 30 needs to descend, the elastic member 50 can apply axial elastic pressure to the mounting part 30, thereby facilitating the elastic member 50 to drive the mounting part 30 to move axially. This also makes the structure of the lifting mechanism 100 compact and improves the space utilization rate.

[0053] In some embodiments of this utility model, the one-way transmission component 41 can be configured as a one-way bearing or a one-way clutch to facilitate integration with the outer bracket 10 and the mounting part 30.

[0054] In some embodiments of this utility model, the lifting mechanism 100 has a first circumferential direction and a second circumferential direction that are opposite to each other around the axis of the lifting mechanism 100, and a first axial direction and a second axial direction that are parallel to the axis and opposite to each other. For example, the first circumferential direction can be clockwise, the second circumferential direction can be counterclockwise, and the first axial direction can be from bottom to top (see reference). Figure 1 The direction from B to A in the diagram), and the second axis is the direction from top to bottom (refer to...). Figure 1(The direction from A to B). The threaded drive connection is configured such that when the rotating part 20 rotates in the first circumferential direction, it drives the mounting part 30 to move in the first axial direction; when the rotating part 20 rotates in the second circumferential direction, it drives the mounting part 30 to move in the second axial direction. The selective drive part 40 is configured to restrict the mounting part 30 from rotating in the first circumferential direction, allowing it to rotate only in the second circumferential direction. Under the action of the selective drive part 40 and the threaded drive, when the rotating part 20 rotates in different directions, the mounting part 30 can undergo axial displacement with respect to the rotating part 20. In other words, the lifting of the lifting part can be achieved, making the structure of the lifting mechanism 100 simple and reliable. Specifically, when the rotating part 20 initially rotates, the mounting part 30, due to its inertia, can move axially under the action of the threaded drive. Furthermore, when the rotating part 20 rotates along the first circumferential direction, the selective transmission part 40 restricts the mounting part 30 from rotating along the first circumferential direction. That is, the selective transmission part 40 applies a force to the mounting part 30, preventing the mounting part 30 from rotating. At this time, under the action of the threaded transmission, the axial displacement of the mounting part 30 can be realized. When the rotating part 20 moves along the second circumferential direction, the selective transmission part 40 can apply a small resistance to the mounting part 30 when the rotating part 30 initially rotates. After the mounting part 30 moves axially, it can continue to rotate by driving the mounting part 30 through the selective transmission part 40.

[0055] For example, the first circumferential direction can be clockwise, and the first axial direction can be from bottom to top. The transmission unit 40 is configured to restrict the mounting part 30 from rotating clockwise, meaning that the mounting part 30 can only rotate counterclockwise. When the rotating part 20 rotates clockwise, because the transmission unit 40 restricts the mounting part 30 from rotating clockwise, the mounting part 30 moves from bottom to top under the action of the threaded drive, thus raising the mounting part 30. When the rotating part 20 rotates counterclockwise, the transmission unit 40 no longer restricts the rotation of the mounting part 30, and the mounting part 30 can rotate counterclockwise.

[0056] Combination Figure 3 The lifting mechanism 100 may also include an elastic element 50. The elastic element 50 is configured to drive the mounting part 30 along the second axial direction when the mounting part 30 rotates along the second circumferential direction. When the rotating part 20 initially rotates, the elastic element 50 can apply an axial elastic pressure to the mounting part 30, generating a component force along the thread direction on the mounting part 30, causing the mounting part 30 to rotate relative to the rotating part 20, and the mounting part 30 to move in the direction from top to bottom, thereby ensuring that the mounting part 30 descends stably.

[0057] In some embodiments of this utility model, the outer bracket 10 has a cavity with one end open along the axial direction. The mounting part 30 is telescopically disposed in the cavity. The mounting part 30 retracts into the cavity along the first axial direction and extends outward from the cavity along the second axial direction. The mounting part 30 is telescopically disposed in the cavity, which can protect the mounting part 30, improve the structural stability of the mounting part 30, and make the structure of the lifting mechanism 100 compact, improve the space utilization rate, and facilitate the miniaturization design of the product.

[0058] Combination Figure 1 and Figure 2 In some embodiments of this utility model, the rotating part 20 includes a first bushing 21, and the mounting part 30 includes a second bushing 32. The first bushing 21 and the second bushing 32 are threadedly driven. By setting the first bushing 21 and the second bushing 32 to be threadedly driven, the lifting mechanism 100 has a compact structure, reduces the space occupied, and the threaded transmission structure is simple and reliable, thus improving the working stability of the lifting mechanism 100.

[0059] Furthermore, combined Figure 2 The outer circumferential surface of the first bushing 21 is provided with a first threaded portion 211, and the inner circumferential surface of the second bushing 32 is provided with a second threaded portion 321. A portion of the first bushing 21 passes through the second bushing 32, and the second threaded portion 321 and the first threaded portion 211 are threadedly engaged. Specifically, the rotating part 20 is rotatably connected to the outer bracket 10, and the relative position of the outer bracket 10 is fixed. In other words, the rotating part 20 is fixed in the axial direction. For example, when the rotating part 20 rotates in the clockwise direction, it drives the first bushing 21 to rotate in the clockwise direction, and the second bushing 32 is controlled by the selective transmission part 40 and cannot rotate, thereby causing the first bushing 21 and the second bushing 32 to undergo axial displacement. When the rotating part 20 rotates in the counterclockwise direction, it drives the first bushing 21 to rotate in the counterclockwise direction, and the second bushing 32 is no longer controlled by the selective transmission part 40 and can rotate counterclockwise. However, since the mounting part 30 has a certain inertia when the rotating part 20 initially rotates, the second bushing 32 can undergo axial movement. When the first bushing 21 rotates clockwise, it drives the second bushing 32 to rise; when the first bushing 21 rotates counterclockwise, it drives the second bushing 32 to fall, thereby realizing the lifting and lowering movement of the mounting part 30. The second bushing 32 can position the first bushing 21, and the threaded drive connection structure is simple and reliable, improving the structural stability of the rotating part 20. A portion of the first bushing 21 passes through the second bushing 32, while the other portion is exposed, facilitating the connection of the first bushing 21 to the outer bracket 10 and the external drive structure.

[0060] In addition, combined Figure 5In an embodiment where the lifting mechanism 100 includes an elastic element 50, when the rotating part 20 initially rotates, the elastic element 50 drives the second bushing 32 to move axially in a stable manner, thereby causing the mounting part 30 to generate axial displacement.

[0061] Combination Figure 1 and Figure 4 The mounting part 30 may also include a connecting part 33, which is disposed inside the second bushing 32, making the structure of the mounting part 30 compact and improving space utilization. A portion of the first bushing 21 passes through the connecting part 33 and the second bushing 32. The connecting part 33 and the second bushing 32 cooperate to limit the first bushing 21 and improve the structural stability of the first bushing 21.

[0062] The connecting part 33 forms a positioning cavity 331 with one end open for mounting the mop assembly 200. Specifically, the lifting mechanism 100 of this embodiment can be applied to the sweeper 1000. The mop assembly 200 can be mounted on the mounting part 30. During the lifting process, the mounting part 30 can drive the mop assembly 200 to rise and fall. Specifically, when the mop assembly 200 needs to be used, the mounting part 30 lowers and drives the mop assembly 200 to fall, making it convenient to use the mop assembly 200 to perform mopping work. When the mop assembly 200 does not need to be used, the mounting part 30 rises and drives the mop assembly 200 to rise, making it convenient to store the mop assembly 200 inside the sweeper 1000 and avoid secondary pollution to the carpet or cleaned floor.

[0063] Combination Figure 1 and Figure 4 In some embodiments of this utility model, the mounting part 30 is provided with a positioning part 34 for magnetically attaching the wiping cloth assembly 200, which facilitates the installation and maintenance of the wiping cloth assembly 200 and the mounting part 30, and improves the installation efficiency of the wiping cloth assembly 200 and the mounting part 30.

[0064] Specifically, the positioning part 34 can be a metal part, and the wiping assembly 200 is provided with a magnet 230. The metal part and the magnet 230 are magnetically attracted to each other, so that the wiping assembly 200 is positioned and connected to the mounting part 30. This allows the wiping assembly 200 to avoid obstacles or uneven working surfaces, improves the working stability of the sweeper 1000, and makes the connection structure between the wiping assembly 200 and the mounting part 30 stable and reliable.

[0065] Combination Figure 4In some embodiments of this utility model, the outer support 10 includes a third sleeve 11, and the mounting part 30 includes a second sleeve 35. The second sleeve 35 and the third sleeve 11 are arranged radially. The selective transmission part 40 can be provided in the third sleeve 11, or it can also be provided in the second sleeve 35, or it can be provided in both the second sleeve 35 and the third sleeve 11, so that the selective transmission part 40 can stably control the unidirectional rotation of the mounting part 30, and make the structure of the lifting mechanism 100 compact and improve the space utilization rate. For example, the transmission part 40 may include a one-way transmission member 41. The one-way transmission member 41 may include a first part 411 and a second part 412. The first part 411 is connected to the third sleeve 11, and the second part 412 is connected to the second sleeve 35. The second part 412 is rotatably connected to the first part 411 in one direction. The first part 411 and the first part 411 cooperate to allow the second part 412 to rotate only in one direction. The second part 412 is connected to the second sleeve 35 to drive the mounting part 30 to rotate in one direction.

[0066] Combination Figure 4 In some embodiments of this utility model, at least a portion of the second sleeve 35 passes through the third sleeve 11, and the transmission part 40 is disposed between the third sleeve 11 and the second sleeve 35, so that the lifting mechanism 100 has a compact structure and improves space utilization.

[0067] Combination Figure 6 The sweeper 1000 according to an embodiment of the present invention includes the aforementioned lifting mechanism 100, mop assembly 200, and drive unit 300. The mop assembly 200 is mounted on the mounting part 30, and the drive unit 300 is connected to the rotating part 20. Specifically, the drive unit 300 can drive the rotating part 20 to rotate. The drive unit 300 can rotate in both directions. For example, when the drive unit 300 rotates in the forward direction, it can drive the rotating part 20 to rotate clockwise, causing the mounting part 30 to rise, and then causing the mop assembly 200 to rise and leave the working surface. When the drive unit 300 rotates in the reverse direction, it can drive the rotating part 20 to rotate counterclockwise, causing the mounting part 30 to fall, and then causing the mop assembly 200 to fall and perform mopping work. By setting up a lifting mechanism 100 to automatically raise and lower the mop assembly 200, the sweeper 1000 can adapt to different usage scenarios. In vacuuming mode, the lifting mechanism 100 can store the mop assembly, preventing the mop assembly from affecting cleaning efficiency and causing secondary pollution to the ground. In mopping mode, the lifting mechanism 100 can lower the mop assembly to perform mopping work, which improves the automation level of the sweeper 1000, simplifies user operation, and enhances the user experience.

[0068] Among them, combined Figure 4The wiping cloth assembly 200 may include a wiping cloth 220 bracket 210 and a wiping cloth 220 disposed on the wiping cloth 220 bracket 210. The wiping cloth 220 bracket 210 is detachably installed on the mounting part 30, and the wiping cloth 220 bracket 210 and the mounting part 30 are magnetically engaged, making the connection structure between the wiping cloth 220 bracket 210 and the mounting part 30 simple and convenient for cleaning and replacing the wiping cloth assembly 200.

[0069] In addition, the rag 220 and the rag holder 210 can be fixedly connected to improve the structural strength of the rag assembly 200. Of course, the rag 220 and the rag holder 210 can also be detachably connected to facilitate the replacement and cleaning of the rag 220.

[0070] Optionally, an elastic element may be provided between the magnet 230 and the mop 220 so that the mop 220 can avoid obstacles or uneven working surfaces, thereby improving the working stability of the sweeper 1000.

[0071] Optionally, the sweeping robot 1000 may include a dual-disc structure, namely, two mop assemblies 200. The two mop assemblies 200 are located at the rear end of the sweeping robot 1000 in the direction of travel. The mop assemblies 200 and the lifting mechanism 100 are correspondingly arranged. In other words, the sweeping robot 1000 may include two lifting mechanisms 100. Under the action of the lifting mechanism 100, the sweeping robot 1000 can autonomously control each mop assembly 200 to switch between any state of mopping and lifting, thereby improving the automation level of the sweeping robot 1000 and enhancing the user experience.

[0072] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0073] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this utility model, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0074] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0075] In this utility model, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0076] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a 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 invention. 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. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0077] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present invention.

Claims

1. A lifting mechanism (100), characterized in that, It includes an outer bracket (10), a rotating part (20), and a mounting part (30). The rotating part (20) is rotatably connected to the outer bracket (10), and the mounting part (30) is threadedly connected to the rotating part (20). The lifting mechanism (100) further includes a selection transmission unit (40), which is located on the outer bracket (10) and configured to control the mounting part (30) to rotate in one direction.

2. The lifting mechanism (100) according to claim 1, characterized in that, The selection transmission part (40) includes a one-way transmission member (41), which includes a first part (411) and a second part (412). The first part (411) is connected to the outer bracket (10), and the second part (412) is connected to the mounting part (30). The second part (412) is rotatably connected to the first part (411) in one direction.

3. The lifting mechanism (100) according to claim 2, characterized in that, The first part (411) is fixedly connected to the outer bracket (10), and the second part (412) is circumferentially limited and axially movable connected to the mounting part (30).

4. The lifting mechanism (100) according to claim 3, characterized in that, One of the second part (412) and the mounting part (30) includes a guide groove, and the other includes a guide block movably disposed in the guide groove along the axial direction.

5. The lifting mechanism (100) according to claim 2, characterized in that, The one-way transmission component (41) is configured as a one-way bearing or a one-way clutch.

6. The lifting mechanism (100) according to claim 1, characterized in that, The lifting mechanism (100) further includes an elastic element (50), which is connected to the mounting part (30). The elastic element (50) is configured to extend axially and its two ends are respectively connected to the rotating part (20) and the mounting part (30).

7. The lifting mechanism (100) according to claim 1, characterized in that, The lifting mechanism (100) has a first circumferential direction and a second circumferential direction that are opposite to each other around the axis of the lifting mechanism (100), and a first axial direction and a second axial direction that are parallel to the axis and opposite to each other. The threaded drive connection is configured such that when the rotating part (20) rotates along the first circumferential direction, it drives the mounting part (30) to move along the first axial direction; when the rotating part (20) rotates along the second circumferential direction, it drives the mounting part (30) to move along the second axial direction. The selection transmission unit (40) is configured to restrict the mounting unit (30) from rotating in the first circumferential direction and allow the mounting unit (30) to rotate in the second circumferential direction.

8. The lifting mechanism (100) according to claim 7, characterized in that, The outer support (10) has a chamber with one end open along the axial direction, and the mounting part (30) is telescopically disposed in the chamber. The mounting part (30) retracts into the chamber in the first axial direction and extends outward from the chamber in the second axial direction.

9. The lifting mechanism (100) according to claim 1, characterized in that, The rotating part (20) includes a first bushing (21), and the mounting part (30) includes a second bushing (32). The first bushing (21) and the second bushing (32) are threaded together.

10. The lifting mechanism (100) according to claim 9, characterized in that, The inner circumferential surface of the first bushing (21) is provided with a first threaded portion (211), and the outer circumferential surface of the second bushing (32) is provided with a second threaded portion (321). A portion of the second bushing (32) passes through the first bushing (21), and the second threaded portion (321) and the first threaded portion (211) are threadedly engaged.

11. The lifting mechanism (100) according to claim 10, characterized in that, The mounting part (30) further includes a connecting part (33), which is disposed inside the second bushing (32), and a portion of the first bushing (21) passes through the connecting part (33) and the second bushing (32). The connecting part (33) forms a positioning cavity (331) with one end open for mounting the wiping assembly (200).

12. The lifting mechanism (100) according to claim 1, characterized in that, The mounting part (30) is provided with a positioning part (34) for magnetically attaching the wiping cloth assembly (200).

13. The lifting mechanism (100) according to claim 1, characterized in that, The outer support (10) includes a third sleeve (11), the mounting part (30) includes a second sleeve (35), the second sleeve (35) and the third sleeve (11) are arranged radially, and the selection transmission part (40) is provided on the third sleeve (11) and / or the second sleeve (35).

14. The lifting mechanism (100) according to claim 13, characterized in that, At least a portion of the second sleeve (35) passes through the third sleeve (11), and the selection transmission part (40) is disposed between the third sleeve (11) and the second sleeve (35).

15. A sweeping machine (1000), characterized in that, include: The lifting mechanism (100) according to any one of claims 1-14; A cloth assembly (200) is mounted on the mounting portion (30); A drive unit (300) is connected to the rotating unit (20) in a transmission manner.

16. The sweeper (1000) according to claim 15, characterized in that, The wiping cloth assembly (200) includes a wiping cloth bracket (210) and a wiping cloth (220) disposed on the wiping cloth bracket (210). The wiping cloth bracket (210) is detachably installed on the mounting part (30), and the wiping cloth bracket (210) and the mounting part (30) are magnetically engaged.

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