Obstacle crossing device for a mobile cleaning device and mobile cleaning device

Abstract

The embodiment of the application provides an obstacle crossing device for a movable cleaning device and the movable cleaning device, and belongs to the technical field of cleaning devices. The movable cleaning device comprises a chassis and a driving wheel, and comprises: a driving wheel support, one end of the driving wheel support is movably connected with the chassis, and the side surface of the other end of the driving wheel support is provided with a pressing surface, and the driving wheel is installed on the driving wheel support; an obstacle crossing mechanism comprising a sliding part cooperating with the pressing surface, and a driving part for driving the sliding part to move, the sliding part at least comprises a first position in contact with the pressing surface, and when adjusted to the first position, it is in an obstacle crossing state. The obstacle crossing device can process obstacle crossing for obstacles.

Description

Technical Field

[0001] This application relates to the field of cleaning equipment technology, and more specifically to an obstacle-crossing device for a mobile cleaning device and a mobile cleaning device. Background Technology

[0002] Currently, most cleaning equipment on the market has extremely limited obstacle-crossing height, severely restricting its application scenarios. Traditional cleaning products, such as robotic floor scrubbers, mostly use fixed roller brushes or small-wheel drive, which have very limited obstacle-crossing capabilities when facing obstacles such as thresholds, carpet edges, power lines, and gentle slopes in home or commercial environments. This not only limits their working range but can also lead to machine jamming, task interruption, or even damage. For example, when a robotic floor scrubber or sweeper attempts to cross a high obstacle, it is prone to violent collisions, resulting in damage to both the machine and the obstacle. Especially when attempting to cross wooden thresholds or metal door tracks, such collisions can damage both the bottom structure of the robotic floor scrubber or sweeper and the threshold surface. Secondly, due to poor contact between the drive wheels and the ground during obstacle crossing, mobile cleaning equipment often experiences slippage, which not only wastes energy and reduces cleaning efficiency but also accelerates the wear of the drive wheels. Therefore, an obstacle-crossing device for mobile cleaning equipment is needed, capable of handling obstacles effectively. Utility Model Content

[0003] The purpose of this application is to provide an obstacle-crossing device for a mobile cleaning equipment and a mobile cleaning equipment, the obstacle-crossing device being capable of overcoming obstacles.

[0004] To achieve the above objectives, this application provides an obstacle-crossing device for a mobile cleaning equipment. The mobile cleaning equipment includes a chassis and drive wheels, comprising: A drive wheel bracket, one end of which is movably connected to the chassis, and the other end of which has a pressing surface on its side, and the drive wheel is mounted on the drive wheel bracket; An obstacle-crossing mechanism includes a sliding part that cooperates with a pressure surface, and a driving part for driving the sliding part to move. The sliding part includes at least a first position that contacts the pressure surface, and is in an obstacle-crossing state when adjusted to the first position.

[0005] Optionally, the obstacle-crossing device further includes a mounting cover fixedly connected to the drive wheel bracket, the pressure surface being disposed on at least one side of the mounting cover, and / or, The mounting cover is positioned above the drive wheel.

[0006] Optionally, the sliding part includes: A slider mounting bracket is mounted on the chassis, and the slider mounting bracket has a through groove inside; The sliding block includes a pressing end and an assembly end connected to the driving part. The assembly end is disposed in the through groove and can move along the through groove. The pressing end is provided with an abutting surface that cooperates with the pressing surface.

[0007] Optionally, the pressing surface is an inclined surface or a curved surface, and the contact surface is an inclined surface or a curved surface that mates with the pressing surface.

[0008] Optionally, the drive wheel brackets are disposed on both sides of the chassis and are movably connected to the chassis.

[0009] Optionally, the drive unit includes: The first rotating motor is mounted on the chassis; A rotating pulley is connected to the rotating shaft of the first rotating motor so that it can be driven to rotate by the first rotating motor; Pull ropes are provided on both sides of the first rotating motor. One end of the pull rope on one side is connected to the assembly end of the sliding block, and the other end is connected to the rotating pulley. Both ends of the pull rope on the other side are connected to the assembly end of the corresponding sliding block and the rotating pulley, so that when the rotating pulley rotates, the two sliding blocks can be pulled simultaneously by the pull ropes.

[0010] Optionally, the two pull ropes can be of the same length.

[0011] Optionally, the drive unit includes a first spring, one end of which is connected to the end of the slider mounting bracket away from the pull rope, and the other end of which is connected to the end of the slider block away from the pull rope, so as to retract the slider block.

[0012] Optionally, the drive unit includes a transmission screw and a second rotary motor that drives the transmission screw to rotate. The transmission screw is rotatably disposed on both sides of the bottom of the through groove. The mounting end of the sliding block passes through the transmission screw and is driven by the transmission screw to move along the through groove. The second rotary motor is disposed at the end of the slider mounting bracket and connected to the transmission screw to drive the transmission screw to rotate. One end of the pull rope is disposed on the sliding block connected to the transmission screw, and the other end is disposed on another sliding block not connected to the transmission screw.

[0013] Optionally, the drive unit includes a second spring disposed between a sliding block and a slider mounting bracket that are not connected to the drive screw.

[0014] Optionally, the obstacle-crossing mechanism includes a guide shaft disposed at both ends of the bottom of the through groove, and the sliding block can pass through the guide shaft to move along the guide shaft.

[0015] Optionally, the pull cord is wrapped with a protective sleeve.

[0016] Optionally, the protective sleeve is fixed to the chassis, and the pull cord can slide inside the protective sleeve.

[0017] Optionally, the drive wheel is provided with multiple sets of anti-slip patterns.

[0018] On the other hand, embodiments of this application may provide a mobile cleaning device, which includes a chassis, drive wheels, and an obstacle-crossing device as described above for the mobile cleaning device.

[0019] Through the above technical solutions, the obstacle-crossing device and the mobile cleaning equipment provided in this application embodiment are described. The cleaning equipment may include a chassis and drive wheels. The obstacle-crossing device may include a drive wheel bracket and an obstacle-crossing mechanism. One end of the drive wheel bracket may be movably connected to the chassis, and the other end of the drive wheel bracket may have a pressure surface on its side. The drive wheel may be mounted on the side of the drive wheel bracket to support it. The obstacle-crossing mechanism may be disposed on the chassis and may include a sliding part that cooperates with the pressure surface and a drive part for driving the sliding part to move. The sliding part may at least include a first position that contacts the pressure surface. In this first position, the obstacle-crossing mechanism can be adjusted to an obstacle-crossing state, thereby realizing the adjustment of the height of the chassis relative to the drive wheel bracket. The sliding part can cooperate with the pressure surface to press against it. Because the drive wheel is mounted on the drive wheel bracket and is located on the ground, when the sliding part and the pressure surface come into contact and press against each other, the drive wheel bracket will not shift vertically due to the support of the ground. The obstacle-crossing mechanism is mounted on the chassis of the portable cleaning equipment. This mechanism can cause relative displacement between the chassis and the drive wheel bracket. When the sliding part and the pressure surface reach the first position, the chassis can be raised, thereby adjusting the height of the chassis relative to the drive wheel bracket and increasing the height of the portable cleaning equipment, allowing it to cross obstacles. After the portable cleaning equipment has crossed an obstacle, the sliding part and the pressure surface can be out of the first position, allowing the height of the portable cleaning equipment to decrease, facilitating the continuation of normal cleaning functions. This obstacle-crossing device can handle obstacles.

[0020] Other features and advantages of the embodiments of this application will be described in detail in the following detailed description section. Attached Figure Description

[0021] The accompanying drawings are provided to further illustrate the embodiments of this application and form part of the specification. They are used together with the following detailed description to explain the embodiments of this application, but do not constitute a limitation on the embodiments of this application. In the drawings: Figure 1This is a first schematic diagram of an obstacle-crossing device for a portable cleaning device disposed in a portable cleaning device, according to one embodiment of the present application. Figure 2 This is a second schematic diagram illustrating an obstacle-crossing device for a portable cleaning device, according to one embodiment of this application, installed in a portable cleaning device. Figure 3 This is a three-dimensional view of an obstacle-crossing device for a portable cleaning equipment according to one embodiment of the present application. Figure 4 This is a three-dimensional view of an obstacle-crossing device for a portable cleaning equipment in one embodiment of the present application when it fails to cross an obstacle. Figure 5 This is one embodiment according to the present application. Figure 4 Enlarged view of point A in the middle; Figure 6 This is a three-dimensional view of an obstacle-crossing device for a portable cleaning equipment during obstacle crossing, according to one embodiment of the present application. Figure 7 This is one embodiment according to the present application. Figure 6 Enlarged view of point B in the middle; Figure 8 This is a three-dimensional schematic diagram of an obstacle-crossing device according to another embodiment of the present application. Figure 9 This is a first three-dimensional schematic diagram of an obstacle-crossing device when it has not crossed an obstacle, according to another embodiment of the present application. Figure 10 This is a second three-dimensional schematic diagram of an obstacle-crossing device when not crossing an obstacle, according to another embodiment of the present application.

[0022] Explanation of reference numerals in the attached figures 1. Drive wheel bracket; 2. Chassis; 3. Pressing surface; 4. Drive wheel; 5. Obstacle crossing mechanism; 50. Sliding part; 51. Drive part; 500. Slider mounting bracket; 501. Through groove; 502. Sliding block; 503. Pressing end; 504. Drive end; 510. First rotating motor; 511. Rotating pulley; 512. Pull rope; 513. First spring; 514. Transmission screw; 515. Second rotating motor; 516. Second spring; 6. Guide shaft; 7. Protective sleeve; 8. Anti-slip texture; 9. Mounting cover. Detailed Implementation

[0023] The specific embodiments of this application will be described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are for illustration and explanation only and are not intended to limit the embodiments of this application.

[0024] It is understood that the mobile cleaning equipment can be a floor scrubber or a sweeping robot. When encountering high obstacles such as thresholds or carpets during the cleaning process, these robots require significant obstacle-crossing capabilities. However, existing floor scrubbers and sweeping robots have limited obstacle-crossing abilities, often resulting in slippage and idle spinning during obstacle-crossing. This not only wastes energy and reduces cleaning efficiency but also accelerates wear on the drive wheels. Therefore, an obstacle-crossing device is needed for mobile cleaning equipment to improve its obstacle-crossing capabilities, such as floor scrubbers or sweeping robots.

[0025] In the embodiments of this application, such as Figure 1 and Figure 2 and Figure 3 As shown, the portable cleaning device may include a chassis 2 and drive wheels 4. The obstacle-crossing device may include a drive wheel bracket 1 and an obstacle-crossing mechanism 5. One end of the drive wheel bracket 1 may be movably connected to the chassis 2, and the other end of the drive wheel bracket 1 may have a pressure surface 3 on its side. This allows the chassis 2 of the portable cleaning device to be supported. The drive wheels 4 may be mounted on the drive wheel bracket 1 to support the drive wheel bracket 1.

[0026] It is understood that, in this embodiment, the drive wheel 4 can be driven to rotate by the rotating motor of the cleaning device, or by any other means. In this embodiment, a gearbox can be provided on the side of the drive wheel bracket 1, and a multi-stage speed-changing gear can be provided inside the gearbox. The rotating shaft of the drive wheel 4 can mesh with the multi-stage speed-changing gear. A motor can be provided on the side of the gearbox, and the motor can drive the rotation of the drive wheel and the gears inside the gearbox. In this embodiment, the drive wheel 4 can be rotated by a motor on one side. It is understood that the above are only preferred embodiments in this application. The drive wheel 4 can be driven in various other ways. For example, the drive wheels 4 of the cleaning device can be coaxially connected, and then driven to rotate coaxially by a motor or any other driving device.

[0027] The obstacle-crossing mechanism 5 can be mounted on the chassis 2 and may include a sliding part 50 that cooperates with the pressure surface 3 and a driving part 51 for driving the sliding part 50 to move. The sliding part 50 may include at least a first position that contacts the pressure surface 3. In this first position, the obstacle-crossing mechanism 5 can be adjusted to an obstacle-crossing device, thereby enabling the adjustment of the height of the chassis 2 relative to the drive wheel bracket 1. The sliding part 50 can cooperate with the pressure surface 3 to press against the ground. Because the drive wheel 4 is mounted on the drive wheel bracket 1 and is located on the ground, when the sliding part 50 and the pressure surface 3 come into contact and press against each other, the drive wheel bracket 1 will not move vertically due to the support of the ground. Since the obstacle-crossing mechanism 5 is mounted on the chassis 2 of the movable cleaning device, the obstacle-crossing mechanism 5 can drive the chassis 2 and the drive wheel bracket 1 to move relative to each other. When the sliding part 50 and the pressure surface 3 reach the first position, such as Figure 6 and Figure 8 As shown, the chassis 2 can be raised, thereby adjusting the height of the chassis 2 relative to the drive wheel bracket 1, thus increasing the height of the portable cleaning device and enabling it to overcome obstacles. The first position can be where the bottom of the sliding part 50 is at the top of the pressure surface 3, or where the bottom of the sliding part 50 is on the inclined side of the pressure surface 3, etc. It is not limited to the top of the pressure surface 3 and can be any height position that allows the chassis 2 to be raised. After the portable cleaning device overcomes an obstacle, the sliding part 50 may not be in the first position relative to the pressure surface 3, allowing the height of the portable cleaning device to decrease so that normal cleaning functions can continue. This obstacle-crossing device can handle obstacles.

[0028] Because the obstacle-crossing device in this embodiment can increase the height of the cleaning equipment, the cleaning equipment equipped with this device has a strong obstacle-crossing capability. It can stably cross vertical obstacles with a height of 50%-80% of the machine's height, such as thresholds and sliding door tracks. Furthermore, it can smoothly transition on various floor surfaces, including hard surfaces, short-pile carpets, and long-pile carpets, without getting stuck. This obstacle-crossing device does not affect the core cleaning function of the cleaning equipment, and its structure is simple and compact, integrated into the limited space within the cleaning equipment, without occupying excessive volume.

[0029] In the embodiments of this application, such as Figure 3 As shown, the obstacle-crossing device may include a mounting cover 9 fixedly connected to the drive wheel bracket 1. The mounting cover 9 may be disposed above the drive wheel 4, thereby protecting the drive wheel 4. The abutment surface 3 may be disposed on at least one side of the mounting cover 9, so that the sliding part 50 can contact the abutment surface 3 on the mounting cover 9 and then reach a first position to adjust the height of the chassis 2 relative to the drive wheel bracket 1.

[0030] In the embodiments of this application, such as Figure 3 As shown, the sliding part 50 may include a slider mounting bracket 500 and a sliding block 502. The slider mounting bracket 500 may be disposed on the chassis 2, and a through groove 501 may be provided on the slider mounting bracket 500. The sliding block 502 may include a pressing end 503 and an assembly end 504 connected to the drive part 51. The assembly end 504 may be disposed in the through groove 501 and may move along the through groove 501. The pressing end 503 may be provided with a contact surface that cooperates with the pressing surface 3, and may include a first position that contacts the pressing surface 3. When the pressing surface 3 is in the first contact position with the contact surface, the height of the movable cleaning device can be raised, thereby preparing for obstacle crossing. The first position can be any position of the pressing end 503 on the pressing surface 3 that can lift the movable cleaning device. Therefore, when the sliding part 50 contacts and presses against the pressing surface 3, when the sliding part 50 and the pressing surface 3 undergo relative displacement, the movable cleaning device can be raised to cross obstacles.

[0031] It is known that, in order to facilitate better sliding between the contact surface and the pressing surface 3, a sliding component can be provided between the pressing surface 3 and the contact surface, such as a groove or rollers or other components, so as to facilitate better relative displacement between the pressing surface 3 and the contact surface.

[0032] In this embodiment, the pressing surface 3 can be an inclined surface or a curved surface, and the contact surface can be an inclined surface or a curved surface that cooperates with the pressing surface 3. This arrangement allows the pressing surface 3 and the contact surface to have better relative displacement, so as to better lift the chassis 2.

[0033] In this embodiment, the drive wheel bracket 1 can be disposed on both sides of the chassis 2 and can be movably connected to the chassis 2. Therefore, when it is necessary to lift the chassis 2, the sliding block 502 can act on the pressing surface 3 on the drive wheel bracket 1, and then the chassis 2 can be lifted, and the chassis 2 can be kept balanced during the lifting process.

[0034] In the embodiments of this application, such as Figure 3 and Figure 4As shown, the drive unit 51 may include: a first rotary motor 510, a rotary pulley 511, and a pull rope 512. The first rotary motor 510 may be mounted on the chassis 2. The rotary pulley 511 may also be mounted on the chassis 2 and may be connected to the rotating shaft of the first rotary motor 510, thereby being driven to rotate by the first rotary motor 510. There may be two pull ropes 512, which may be respectively mounted on both sides of the rotary pulley 511. One end of the pull rope 512 on the side of the first rotary motor 510 may be connected to the mounting end 504 of the sliding block 502, and the other end may be connected to the rotary pulley 511. One end of the pull rope 512 on the other side of the first rotary motor 510 can be connected to the mounting end 504 of the corresponding side sliding block 502, and the other end can be connected to the corresponding side rotating pulley 511. Therefore, the mounting ends 504 of the sliding blocks 502 on both sides of the first rotary motor 510 can be connected to the rotating pulley 511 via the pull rope 512. When the first rotary motor 510 rotates, driving the rotating pulley 511 to rotate, the rotating pulley 511 can simultaneously pull the pull ropes 512 on both sides, thereby simultaneously pulling the two sliding blocks 502. Figures 4 to 7 As shown, when the pull cord 512 is not pulled, the sliding block 502 is located near the bottom of the slider mounting bracket 500. When the sliding block 502 is pulled, it can be pulled closer to the top of the through slot 501.

[0035] In this embodiment, the two pull ropes 512 can be of the same length. Therefore, when the first rotating motor 510 drives the rotating pulley 511 to rotate, and further drives the pull ropes 512 to pull the sliding block 502, since the two pull ropes 512 are of the same length, the sliding block 502 can be pulled simultaneously, so that the sliding block 502 can act on the pressure surface 3 at the same time, thereby simultaneously lifting the chassis 2, so that the movable cleaning device can maintain balance when lifted.

[0036] In the embodiments of this application, such as Figure 5 , Figure 6 Figure 7 As shown, the drive unit 51 may include a first spring 513. One end of the first spring 513 can be connected to the end of the slider mounting bracket 500 away from the pull rope 512. The other end of the first spring 513 can be connected to the end of the sliding block 502 away from the pull rope 512, thereby retracting the sliding block 502. Under normal conditions without obstacle crossing, the first spring 513 can retract the sliding block 502, such as... Figure 4 As shown. When it is necessary to overcome obstacles, such as Figure 6As shown, the pull rope 512 pulls the sliding block 502 to move, causing the chassis 2 to rise. At the same time, the first spring 513 can also be stretched. After the obstacle is cleared, the stretched first spring 513 can pull the sliding block 502 back through its own elasticity, thereby reducing the height of the chassis 2.

[0037] In another embodiment of this application, such as Figure 8 , Figure 9 and Figure 10 As shown, the drive unit 51 may include a transmission screw 514 and a second rotary motor 515 that drives the transmission screw 514 to rotate. The transmission screw 514 is rotatably disposed on both sides of the bottom of the through groove 501. The mounting end 504 of the sliding block 502 can pass through the transmission screw 514 and can be driven by the transmission screw 514 to move along the through groove 501. When the sliding block 502 is driven to move by the transmission screw 514, the sliding block 502 can contact the abutment surface 3 to overcome the obstacle. The second rotary motor 515 can be disposed at the end of the slider mounting bracket 500 and can be connected to the transmission screw 514, thereby driving the transmission screw 514 to rotate. One end of the pull rope 512 can be disposed on the sliding block 502 connected to the transmission screw 514, and the other end can be disposed on another sliding block 502 not connected to the transmission screw 514. With this configuration, while the sliding block 502 on one side is driven to move by the transmission screw 514, the sliding block 502 on the other side can also be driven to move by the pull rope 512, so that the sliding block 502 can act on the pressing surface 3 at the same time to raise the height of the chassis 2.

[0038] In this embodiment, the second rotary motor 515 can be located at the end of the slider mounting bracket 500 on one side, allowing the second rotary motor 515 to directly drive the movement of the sliding block 502 connected to it via the transmission screw 514. The sliding block 502 on the other side can be moved via the pull rope 512. This arrangement also allows the sliding blocks 502 on both sides to simultaneously act on the pressure surface 3 to raise the height of the chassis 2. Compared to another embodiment where the first rotary motor 510 is mounted on the chassis 2 and the sliding blocks 502 on both sides are pulled simultaneously via pull ropes on both sides, in this embodiment, the second rotary motor 515 can directly drive the rotation of the sliding block 502 connected to it. Although both simultaneously drive the sliding block 502 to act on the pressure surface 3, their modes of action and the positions of the motors are different.

[0039] In the embodiments of this application, such as Figure 8As shown, the drive unit 51 may include a second spring 516. The second spring 516 may be disposed between the sliding block 502, which is not connected to the drive screw 514, and the sliding mounting bracket 500. During obstacle crossing, the sliding block 502 can pull the second spring 516. After obstacle crossing, the second spring 516 can use its own elasticity to pull the connected sliding block 502 back, allowing the height of the chassis 2 to decrease, such as... Figure 10 As shown.

[0040] In this embodiment, the obstacle-crossing mechanism 5 may include a guide shaft 6. The guide shaft 6 may be disposed at both ends of the bottom of the through groove 501, and the sliding block 502 may pass through the guide shaft 6, thereby moving along the guide shaft 6. The guide shaft 6 not only guides the sliding block 502 to prevent it from deviating, but also supports the sliding block 502. When the sliding block 502 moves along the guide shaft 6, its force can act on the guide shaft 6, and then on the slider mounting bracket 500, so that the chassis 2 can be raised.

[0041] In this embodiment, the pull rope 512 may be surrounded by a protective sleeve 7. The protective sleeve 7 can protect the pull rope 512 to prevent it from breaking due to friction with the chassis 2 during transmission, thus affecting the cleaning equipment's obstacle-crossing capability.

[0042] In this embodiment, the guide shaft 6 may have blocking blocks at both ends. The guide shaft 6 can be mounted on the slider mounting bracket 500 via the blocking blocks at both ends. The blocking blocks can not only support the guide shaft 6, but also limit the displacement of the sliding block 502 on the guide shaft 6, preventing the sliding block 502 from detaching from the guide shaft 6.

[0043] In this embodiment, the protective sleeve 7 can be fixedly mounted on the chassis 2, and the pull rope 512 can slide within the protective sleeve 7. Because the pull rope 512 slides within the protective sleeve 7, the friction between it and the chassis 2 is minimized, and the pull rope 512 and the protective sleeve 7 do not need to be pulled simultaneously, making it easier to pull the pull rope 512.

[0044] In the embodiments of this application, such as Figure 3 As shown, the drive wheel 4 can be equipped with multiple sets of anti-slip patterns 8. These multiple sets of anti-slip patterns 8 enable the cleaning equipment to adapt to various terrains, such as hard floors, short-pile carpets, long-pile carpets, and other types of surfaces, allowing for a smooth transition.

[0045] On the other hand, embodiments of this application may also provide a mobile cleaning device, which includes a chassis, drive wheels, and an obstacle-crossing device as described above for the mobile cleaning device.

[0046] Through the above technical solutions, the obstacle-crossing device and the mobile cleaning equipment provided in this application embodiment are described. The cleaning equipment may include a chassis and drive wheels. The obstacle-crossing device may include a drive wheel bracket and an obstacle-crossing mechanism. One end of the drive wheel bracket may be movably connected to the chassis, and the other end of the drive wheel bracket may have a pressure surface on its side. The drive wheel may be mounted on the side of the drive wheel bracket to support it. The obstacle-crossing mechanism may be disposed on the chassis and may include a sliding part that cooperates with the pressure surface and a drive part for driving the sliding part to move. The sliding part may at least include a first position that contacts the pressure surface. In this first position, the obstacle-crossing mechanism can be adjusted to an obstacle-crossing state, thereby realizing the adjustment of the height of the chassis relative to the drive wheel bracket. The sliding part can cooperate with the pressure surface to press against it. Because the drive wheel is mounted on the drive wheel bracket and is located on the ground, when the sliding part and the pressure surface come into contact and press against each other, the drive wheel bracket will not shift vertically due to the support of the ground. The obstacle-crossing mechanism is mounted on the chassis of the portable cleaning equipment. This mechanism can cause relative displacement between the chassis and the drive wheel bracket. When the sliding part and the pressure surface reach the first position, the chassis can be raised, thereby adjusting the height of the chassis relative to the drive wheel bracket and increasing the height of the portable cleaning equipment, allowing it to cross obstacles. After the portable cleaning equipment has crossed an obstacle, the sliding part and the pressure surface can be out of the first position, allowing the height of the portable cleaning equipment to decrease, facilitating the continuation of normal cleaning functions. This obstacle-crossing device can handle obstacles.

[0047] It should also be noted that the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus. Unless otherwise specified, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes that element.

[0048] The above are merely embodiments of this application and are not intended to limit this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principle of this application should be included within the scope of the claims of this application.

Claims

1. An obstacle-crossing device for a mobile cleaning equipment, the mobile cleaning equipment comprising a chassis (2) and drive wheels (4), characterized in that, include: Drive wheel bracket (1), one end of the drive wheel bracket (1) is movably connected to the chassis (2), and the other end of the drive wheel bracket (1) is provided with a pressing surface (3), and the drive wheel (4) is installed on the drive wheel bracket (1); The obstacle-crossing mechanism (5) includes a sliding part (50) that cooperates with the pressure surface, and a driving part (51) for driving the sliding part (50) to move. The sliding part (50) includes at least a first position that contacts the pressure surface (3), and is in an obstacle-crossing state when adjusted to the first position.

2. The obstacle-crossing device for portable cleaning equipment according to claim 1, characterized in that, The obstacle-crossing device further includes a mounting cover (9) fixedly connected to the drive wheel bracket (1), the pressure surface (3) being provided on at least one side of the mounting cover (9), and / or, The mounting cover (9) is located above the drive wheel (4).

3. The obstacle-crossing device for portable cleaning equipment according to claim 1, characterized in that, The sliding part (50) includes: A slider mounting bracket (500) is provided on the chassis (2), and a through groove (501) is provided in the slider mounting bracket (500). The sliding block (502) includes a pressing end (503) and an assembly end (504) connected to the drive unit (51). The assembly end (504) is disposed in the through groove (501) and can move along the through groove (501). The pressing end (503) is provided with an abutting surface that cooperates with the pressing surface (3).

4. The obstacle-crossing device for portable cleaning equipment according to claim 3, characterized in that, The pressing surface (3) is an inclined surface or a curved surface, and the contact surface is an inclined surface or a curved surface that cooperates with the pressing surface (3).

5. The obstacle-crossing device for portable cleaning equipment according to claim 3, characterized in that, The drive wheel bracket (1) is located on both sides of the chassis (2) and is movably connected to the chassis (2).

6. The obstacle-crossing device for portable cleaning equipment according to claim 5, characterized in that, The drive unit (51) includes: The first rotating motor (510) is mounted on the chassis (2); A rotating pulley (511) is connected to the rotating shaft of the first rotating motor (510) so that it can be driven to rotate by the first rotating motor (510); Pull ropes (512) are arranged on both sides of the first rotating motor (510). One end of the pull rope (512) on one side is connected to the mounting end (504) of the sliding block (502), and the other end is connected to the rotating pulley (511). The two ends of the pull rope (512) on the other side are connected to the mounting end (504) of the corresponding sliding block (502) and the rotating pulley (511), so that when the rotating pulley (511) rotates, the two sliding blocks (502) can be pulled simultaneously by the pull ropes (512).

7. The obstacle-crossing device for portable cleaning equipment according to claim 6, characterized in that, The two pull ropes (512) are of the same length.

8. The obstacle-crossing device for portable cleaning equipment according to claim 6, characterized in that, The drive unit (51) includes a first spring (513), one end of which is connected to the end of the slider mounting bracket (500) away from the pull rope (512), and the other end of which is connected to the end of the sliding block (502) away from the pull rope (512) to retract the sliding block (502).

9. The obstacle-crossing device for portable cleaning equipment according to claim 5, characterized in that, The drive unit (51) includes a transmission screw (514) and a second rotary motor (515) that drives the transmission screw (514) to rotate. The transmission screw (514) is rotatably disposed on both sides of the bottom of the through groove (501). The mounting end (504) of the sliding block (502) passes through the transmission screw (514) and is driven by the transmission screw (514) to move along the through groove (501). The second rotary motor (515) is disposed at the end of the slider mounting bracket (500) and connected to the transmission screw (514) to drive the transmission screw (514) to rotate. One end of the pull rope (512) is disposed on the sliding block (502) connected to the transmission screw (514), and the other end is disposed on another sliding block (502) not connected to the transmission screw (514).

10. The obstacle-crossing device for a portable cleaning equipment according to claim 9, characterized in that, The drive unit (51) includes a second spring (516) disposed between a sliding block (502) not connected to the drive screw (514) and a slider mounting bracket (500).

11. The obstacle-crossing device for a portable cleaning equipment according to claim 3, characterized in that, The obstacle-crossing mechanism (5) includes a guide shaft (6) disposed at both ends of the bottom of the through groove (501), and the sliding block (502) can pass through the guide shaft (6) to move along the guide shaft (6).

12. The obstacle-crossing device for a portable cleaning equipment according to claim 6 or 9, characterized in that, The pull rope (512) is surrounded by a protective sleeve (7).

13. The obstacle-crossing device for a portable cleaning equipment according to claim 12, characterized in that, The protective sleeve (7) is fixed on the chassis (2), and the pull rope (512) can slide inside the protective sleeve (7).

14. The obstacle-crossing device for a portable cleaning equipment according to claim 1, characterized in that, The drive wheel (4) is provided with multiple sets of anti-slip patterns (8).

15. A portable cleaning device, characterized in that, The mobile cleaning equipment includes a chassis and drive wheels, and an obstacle-crossing device for the mobile cleaning equipment as described in any one of claims 1-14.

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