Cleaning robot

Abstract

The invention discloses a cleaning robot, and relates to the technical field of cleaning equipment. The cleaning robot comprises a support, a rolling brush assembly and a driving mechanism, the driving mechanism is arranged on the support, the support and the driving mechanism are both movably connected with the rolling brush assembly, and the driving mechanism can drive the rolling brush assembly to ascend and descend between a first position and a second position relative to the support. The first position is higher than the second position, under the condition that the rolling brush assembly is located at the first position, the driving mechanism is in positioning fit with the rolling brush assembly, and the rolling brush assembly is fixed relative to the support; and under the condition that the rolling brush assembly is located at the second position, the driving mechanism is disengaged from the rolling brush assembly, and the rolling brush assembly can move relative to the support. According to the scheme, the problem that the cleaning effect is poor due to the fact that a rolling brush assembly of an existing cleaning robot is single in function can be solved.

Description

Technical Field

[0001] This application belongs to the field of cleaning equipment technology, and specifically relates to a cleaning robot. Background Technology

[0002] With the continuous advancement of technology, more and more smart devices are entering our lives, bringing convenience and comfort to our daily routines. In the field of home cleaning, cleaning robots, with their efficient cleaning capabilities and intelligent navigation systems, have become indispensable cleaning helpers in homes and offices.

[0003] Cleaning robots typically use a vacuuming device in conjunction with a roller brush assembly to perform cleaning tasks. The roller brush assembly collects dust, debris, hair, and other dirt from the floor by rotating. In practical applications, to meet the needs of cleaning robots to climb carpets and overcome obstacles, the roller brush assembly needs to have a lifting function. However, currently available cleaning robot roller brush assemblies only have an active lifting function, which is relatively limited and not very effective for cleaning floors with uneven surfaces. Summary of the Invention

[0004] The purpose of this application is to provide a cleaning robot that can solve the problem that the cleaning effect of the roller brush component of current cleaning robots is poor due to its relatively simple function.

[0005] To solve the above-mentioned technical problems, this application is implemented as follows: This application provides a cleaning robot, including a support frame, a roller brush assembly, and a drive mechanism. The drive mechanism is disposed on the support frame, and both the support frame and the drive mechanism are movably connected to the roller brush assembly. The drive mechanism can drive the roller brush assembly to move up and down relative to the support frame between a first position and a second position, where the first position is higher than the second position. When the roller brush assembly is in the first position, the drive mechanism is positioned and engaged with the roller brush assembly, and the roller brush assembly is fixed relative to the bracket; when the roller brush assembly is in the second position, the drive mechanism is disengaged from the roller brush assembly, and the roller brush assembly can move relative to the bracket. In this embodiment, when the cleaning robot needs to climb slopes or cross obstacles, the drive mechanism and the roller brush assembly are positioned and coordinated. The drive mechanism drives the roller brush assembly to rise relative to the support, that is, the drive mechanism actively lifts the roller brush assembly. When the roller brush assembly rises to the first position, it is fixed relative to the support. At this time, there is a certain distance between the roller brush assembly and the ground, which can meet the needs of the cleaning robot to climb carpets and cross obstacles. After climbing the slope or crossing the obstacle, the drive mechanism drives the roller brush assembly to descend to the second position. The drive mechanism continues to work, causing the roller brush assembly to disengage from the drive mechanism. At this time, the roller brush assembly can move relative to the support. When the cleaning robot cleans the ground and encounters uneven areas, the roller brush assembly is passively moved relative to the support by the force of the ground, allowing the roller brush assembly to adapt to uneven ground and thus always maintain full contact with the ground. In other words, this embodiment combines the active and passive lifting of the roller brush assembly, thereby realizing the multi-functionality of the roller brush assembly and improving the cleaning effect of the roller brush assembly. Attached Figure Description

[0006] Figure 1 This is a partial structural schematic diagram of the cleaning robot disclosed in the embodiments of this application; Figures 2 to 3 These are cross-sectional views of a portion of the cleaning robot disclosed in the embodiments of this application from different perspectives. Figure 4 for Figure 3 A magnified view of a portion of the structure shown; Figure 5 This is a bottom view of a portion of the structure of the cleaning robot disclosed in the embodiments of this application; Figure 6 for Figure 5 A magnified view of a portion of the structure shown; Figure 7 This is a partial structural schematic diagram of the cleaning robot disclosed in the embodiments of this application.

[0007] Explanation of reference numerals in the attached figures: 100-Bracket, 110-Connecting part, 111-First connecting section, 112-Second connecting section, 120-First abutting part, 130-Second abutting part, 140-Frame body, 150-Cover plate; 200-Roll brush assembly, 210-Mounting protrusion, 211-Top surface, 212-Positioning protrusion, 213-Main body, 214-Linear bearing, 214a-Flange, 215-First connecting protrusion, 216-Second connecting protrusion, 220-Housing, 230-Roll brush, 240-Driver; 300-Drive mechanism, 310-Drive source, 320-Transmission component, 321-Positioning through hole; 400 - guide shaft, 400' - first guide shaft, 400” - second guide shaft; 500-Elastic drive component; 610 - First position detection component, 620 - Second position detection component. Detailed Implementation

[0008] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this application. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0009] The terms "first," "second," etc., used in the specification and claims of this application are used to distinguish similar objects and not to describe a specific order or sequence. It should be understood that such use of data can be interchanged where appropriate so that embodiments of this application can be implemented in orders other than those illustrated or described herein, and the objects distinguished by "first," "second," etc., are generally of the same class and the number of objects is not limited; for example, a first object can be one or more. Furthermore, in the specification and claims, "and / or" indicates at least one of the connected objects, and the character " / " generally indicates that the preceding and following objects are in an "or" relationship.

[0010] The cleaning robot provided in this application will be described in detail below with reference to the accompanying drawings, through specific embodiments and application scenarios.

[0011] like Figures 1 to 7As shown in the illustration, this application discloses a cleaning robot, which includes a support 100, a roller brush assembly 200, and a drive mechanism 300. The drive mechanism 300 is disposed on the support 100. Both the support 100 and the drive mechanism 300 are movably connected to the roller brush assembly 200, meaning the roller brush assembly 200 can move relative to the support 100 and also relative to the drive mechanism 300. The drive mechanism 300 can drive the roller brush assembly 200 to move up and down relative to the support 100 between a first position and a second position, wherein the first position is higher than the second position. When the roller brush assembly 200 is in the first position, i.e., when the roller brush assembly 200 is in the high position, the roller brush assembly 200... When there is a certain gap between the support 100 and the ground, the drive mechanism 300 and the roller brush assembly 200 are positioned and engaged, and the roller brush assembly 200 is fixed relative to the support 100, so that the cleaning robot can climb slopes or cross obstacles. When the roller brush assembly 200 is in the second position, that is, when the roller brush assembly 200 is in the low position, the roller brush assembly 200 is in contact with the ground. At this time, the drive mechanism 300 is disengaged from the roller brush assembly 200, and the roller brush assembly 200 can move relative to the support 100, so that the cleaning robot can adapt to uneven ground during the cleaning process, and the roller brush assembly 200 always maintains full contact with the ground, thereby improving the cleaning efficiency of the cleaning robot. In this embodiment, when the cleaning robot needs to climb slopes or cross obstacles, the drive mechanism 300 and the roller brush assembly 200 are positioned and engaged. The drive mechanism 300 drives the roller brush assembly 200 to rise relative to the support 100, that is, the drive mechanism 300 drives the roller brush assembly 200 to actively lift. When the roller brush assembly 200 rises to the first position, the roller brush assembly 200 is fixed relative to the support 100. At this time, there is a certain distance between the roller brush assembly 200 and the ground, which can meet the needs of the cleaning robot to climb carpets and cross obstacles. After climbing slopes or crossing obstacles, the drive mechanism 300 drives the roller brush assembly 200 to descend to the second position. The drive mechanism 300 will continue to work, so that the roller brush assembly 200 is disengaged from the drive mechanism 300. At this time, the roller brush assembly 200 can move relative to the support 100. When the cleaning robot cleans the ground and encounters uneven areas, the roller brush assembly 200 is passively raised and lowered relative to the support 100 by the force of the ground, so that the roller brush assembly 200 can adapt to uneven ground and thus always maintain full contact with the ground. In other words, this application embodiment combines active and passive lifting of the roller brush assembly 200, thereby achieving the multi-functionality of the roller brush assembly 200 and improving its cleaning effect. Therefore, this application embodiment can solve the problem of poor cleaning effect caused by the relatively limited functionality of the roller brush assembly 200 in current cleaning robots.

[0012] In one optional embodiment, the roller brush assembly 200 is provided with a mounting protrusion 210 having a mounting cavity. The connecting portion 110 of the bracket 100 extends through the mounting protrusion 210 into the mounting cavity. The drive mechanism 300 includes a drive source 310 and a transmission member 320. The transmission member 320 is threadedly connected to the output shaft of the drive source 310, i.e., the transmission member 320 and the drive source 310 form a screw-nut mechanism. The transmission member 320 is slidably connected to the roller brush assembly 200. At least a portion of the output shaft of the transmission member 320 and the drive source 310 is disposed within the mounting cavity. In the lifting direction of the roller brush assembly 200, the transmission member 320... The 0 is located between the connecting part 110 and the top surface 211 of the mounting cavity. The drive source 310 can drive the roller brush assembly 200 to rise and fall through the transmission member 320. When the roller brush assembly 200 is in the first position, the transmission member 320 is positioned and engaged with the top surface 211. Optionally, the transmission member 320 and the top surface 211 can be in surface contact. When the roller brush assembly 200 is in the second position, the transmission member 320 is disengaged from the top surface 211, and there is a preset distance between the transmission member 320 and the top surface 211. The preset distance can be a certain value or a certain range of values. There is no specific limitation on this. Specifically, when the cleaning robot needs to climb a slope or cross an obstacle, the drive source 310 drives the transmission component 320 to rise until it is positioned and engaged with the top surface 211 of the mounting cavity. The drive source 310 continues to work, and at this time, the transmission component 320 drives the entire roller brush assembly 200 to rise relative to the bracket 100 to the first position through the mounting protrusion 210. After climbing the slope or crossing the obstacle, the drive source 310 drives the transmission component 320 to descend. At the same time, the roller brush assembly 200 descends together with the transmission component 320 under its own gravity. When the roller brush assembly 200 descends to the second position, that is, when the roller brush assembly 200 contacts the ground, the drive source 310 continues to work and drives the transmission component 320 to continue to descend, so that the transmission component 320 is disengaged from the top surface 211 of the mounting cavity and there is a preset distance between the transmission component 320 and the top surface 211. At this time, the preset distance can be used as the movement space for the roller brush assembly 200 to be passively raised and lowered during the cleaning operation of the cleaning robot.

[0013] The drive mechanism 300 in the above scheme adopts a lead screw and nut mechanism, which features a compact structure and high lifting accuracy of the transmission component 320. This facilitates the control of the specific position of the roller brush assembly 200 relative to the bracket 100. Furthermore, by providing the mounting protrusion 210, not only can the transmission component 320 be mounted, but it also provides movement space for the transmission component 320. This helps improve the assembly compactness between the drive mechanism 300 and the roller brush assembly 200. At the same time, during the lifting and lowering process of the roller brush assembly 200, the transmission component 320 and the top surface 211 of the mounting protrusion 210 are positioned and engaged, which helps improve the connection stability between the drive mechanism 300 and the roller brush assembly 200. In addition, the transmission component 320 is set in the mounting cavity of the mounting protrusion 210, which can avoid interference with the roller brush 230 of the roller brush assembly 200. Of course, the mounting protrusion 210 can also be omitted.

[0014] Optionally, the transmission member 320 can be a block structure; or, in other embodiments, the transmission member 320 can be a plate structure, which occupies less space in the lifting direction of the roller brush assembly 200, which is beneficial to reducing the height of the mounting protrusion 210. Optionally, during the process of the drive source 310 driving the transmission member 320 to move relative to the top surface 211 of the mounting cavity along the lifting direction of the roller brush assembly 200, the side of the transmission member 320 and the side wall of the mounting cavity can be positioned and engaged with each other by friction along the circumferential direction of the output shaft of the drive source 310, so as to avoid the transmission member 320 rotating relative to the side wall of the mounting cavity; or, in another embodiment, the edge of the transmission member 320 is provided with a positioning through hole 321, and the positioning through hole 321 is arranged at intervals with the output shaft of the drive source 310. Optionally, the output shaft of the drive source 310 can be located in the central region of the transmission member 320, and the positioning through hole 321 and the output shaft of the drive source 310 are arranged at intervals along the radial direction of the transmission member 320. The top surface 211 of the mounting cavity is provided with a positioning protrusion 212. During the process of the drive source 310 driving the transmission component 320 to move relative to the top surface 211 of the mounting cavity along the lifting direction of the roller brush assembly 200, the positioning through hole 321 and the positioning protrusion 212 are slidably engaged, and the positioning protrusion 212 and the positioning through hole 321 are circumferentially positioned and engaged along the output shaft of the drive source 310, thereby preventing the transmission component 320 from rotating relative to the side wall of the mounting cavity. At this time, since the positioning through hole 321 and the positioning protrusion 212 are positioned and engaged, the positioning stability between the two is better, which helps to ensure that the transmission component 320 slides stably along the positioning protrusion 212.

[0015] Optionally, the positioning through hole 321 can extend to the side of the transmission member 320 away from its central axis. In this case, the positioning through hole 321 is an open structure, which helps to reduce the size of the transmission member 320, thereby reducing the space occupied by the transmission member 320 in the mounting cavity.

[0016] In a further optional embodiment, the number of positioning through holes 321 can be one; or, the number of positioning through holes 321 can be at least two, with each positioning through hole 321 arranged circumferentially at intervals along the output shaft of the drive source 310, and the positioning protrusions 212 corresponding to the positioning through holes 321 one-to-one. This solution increases the contact area between the transmission member 320 and the roller brush assembly 200 by providing multiple positioning through holes 321, which not only improves the positioning stability between the two, but also increases the fit stability between the transmission member 320 and the roller brush assembly 200. In another optional embodiment, the cleaning robot further includes a guide shaft 400, with both ends of the guide shaft 400 connected to the bracket 100. The guide shaft 400 and the drive mechanism 300 are spaced apart along the length of the roller brush assembly 200. The first end of the guide shaft 400 extends through the mounting protrusion 210 into the mounting cavity and is connected to the connecting portion 110 of the bracket 100. The mounting protrusion 210 is slidably sleeved on the guide shaft 400. During the lifting and lowering of the roller brush assembly 200 driven by the drive mechanism 300, and during the cleaning process of the roller brush assembly 200, the roller brush assembly 200 slides along the guide shaft 400. The guide shaft 400 provides guidance for the roller brush assembly 200, preventing it from tilting during lifting and lowering. Furthermore, the roller brush assembly 200 is connected to the bracket 100 via the drive mechanism 300 and the guide shaft 400, which increases the connection area between the roller brush assembly 200 and the bracket 100, thereby improving the connection stability. Additionally, since the roller brush assembly 200 is typically a long strip structure, the drive mechanism 300 and the guide shaft 400 are spaced apart along the length of the roller brush assembly 200, which further enhances the stability of the roller brush assembly 200 during lifting and lowering relative to the bracket 100. Alternatively, the guide shaft 400 can be omitted, and the mounting protrusion 210 can directly slide against the bracket 100. Optionally, the number of guide shafts 400 can be one, or in other embodiments, the number of guide shafts 400 is at least two, including a first guide shaft 400' and a second guide shaft 400" arranged at intervals along the length direction of the roller brush assembly 200. The drive mechanism 300 is spaced between the first guide shaft 400' and the second guide shaft 400", that is, in the length direction of the roller brush assembly 200, each guide shaft 400 is evenly arranged on both sides of the drive mechanism 300. This is beneficial for the roller brush assembly 200 to move stably during active or passive lifting relative to the bracket 100, and to avoid tilting. In addition, by providing multiple guide shafts 400, the connection stability between the roller brush assembly 200 and the bracket 100 can be further increased.

[0017] In an optional embodiment, the roller brush assembly 200 includes a housing 220, a roller brush 230, and a drive member 240. Both the roller brush 230 and the drive member 240 are disposed within the housing 220. The roller brush 230 is rotatably connected to the housing 220, and the drive member 240 can drive the roller brush 230 to rotate relative to the housing 220. The housing 220 is provided with a mounting protrusion 210. The drive member 240, the first guide shaft 400', and the second guide shaft 400'' are arranged sequentially at intervals along the extension direction of the central axis of the roller brush 230, i.e., the drive member 240 is positioned near the first guide shaft 400'. In this configuration, the distance between the drive component 240 and the second guide shaft 400 is relatively large. Due to the weight of the drive component 240 itself, the end of the roller brush assembly 200 where the drive component 240 is located is relatively heavy. During the cleaning process of the roller brush assembly 200, this end can fully contact the ground, while the end of the roller brush assembly 200 away from the drive component 240 is prone to gaps with the ground, thus affecting the cleaning effect. Based on this, the cleaning robot also includes an elastic drive component 500. Optionally, the elastic drive component 500 can be a spring, which is easy to manufacture. The elastic drive member 500 is sleeved on the second guide shaft 400". The first end of the elastic drive member 500 abuts against the bracket 100, and the second end of the elastic drive member 500 abuts against the mounting protrusion 210. During the cleaning process of the roller brush assembly 200, the end of the roller brush assembly 200 where the second guide shaft 400” is located, i.e., the end of the roller brush assembly 200 away from the drive member 240, is abutted by the elastic drive member 500, ensuring full contact between this end and the ground. This improves the consistency of cleaning the ground by different parts of the roller brush assembly 200, thereby enhancing its cleaning effect. Alternatively, the elastic drive member 500 can be omitted, and other structures can be provided at the end of the roller brush assembly 200 where the second guide shaft 400” is located to increase the weight of that end, or to increase the weight of the end of the housing 220 where the second guide shaft 400” is located.

[0018] In another optional embodiment, the mounting protrusion 210 includes a main body 213 and a linear bearing 214. One end of the linear bearing 214 extends through the main body 213 into the mounting cavity, and the other end of the linear bearing 214 has a flange 214a. The flange 214a is stacked on the main body 213, and the linear bearing 214 is slidably sleeved on the guide shaft 400. This design of the mounting protrusion 210 increases the contact area between it and the guide shaft 400, thereby improving the connection stability of the roller brush assembly 200. Furthermore, the sliding fit between the linear bearing 214 and the guide shaft 400 reduces friction, which improves the lifting flexibility of the roller brush assembly 200 and allows for better adaptation to uneven ground during passive lifting. Alternatively, the linear bearing 214 can be omitted, and the main body 213 can be directly slidably sleeved on the guide shaft 400.

[0019] Optionally, the mounting protrusion 210 can be a continuous structure; or, in another optional embodiment, the mounting protrusion 210 includes a first connecting protrusion 215 and a second connecting protrusion 216 spaced apart. The first connecting protrusion 215 has a first receiving cavity, and the second connecting protrusion 216 has a second receiving cavity. The connecting portion 110 includes a first connecting segment 111 and a second connecting segment 112 spaced apart. The first connecting segment 111 extends through the first connecting protrusion 215 into the first receiving cavity, and the second connecting segment 112 extends through the second connecting protrusion 216 into the second receiving cavity. The first end of the guide shaft 400 is connected to the second connecting segment 112, and the second connecting protrusion 216 is slidably sleeved on the guide shaft 400. This solution uses a mounting protrusion 210 with this structure, placing the drive mechanism 300 and the guide shaft 400 in different receiving cavities. This improves the compactness of the installation between the roller brush assembly 200 and each structure, thereby making the entire cleaning robot structure more stable.

[0020] In one optional embodiment, the bracket 100 has a first abutment portion 120 and a second abutment portion 130 disposed opposite to each other. The first abutment portion 120 is disposed at a first position, and the second abutment portion 130 is disposed at a second position. When the roller brush assembly 200 is in the first position, the roller brush assembly 200 abuts against the first abutment portion 120; when the roller brush assembly 200 is in the second position, the drive mechanism 300 abuts against the second abutment portion 130. Specifically, when the cleaning robot needs to climb slopes or cross obstacles, the drive mechanism 300 and the roller brush assembly 200 are positioned and engaged. When the drive mechanism 300 drives the roller brush assembly 200 to rise relative to the support 100 and abut against the first abutment part 120, it indicates that the roller brush assembly 200 is in the first position. At this point, the drive mechanism 300 stops working, and the cleaning robot can climb slopes and cross obstacles. After climbing or crossing an obstacle, the drive mechanism 300 drives the roller brush assembly 200 down to the ground. The drive mechanism 300 can then continue working until it abuts against the second abutment part 130, thus disengaging the roller brush assembly 200 from the drive mechanism 300. At this point, the cleaning robot can perform cleaning work. This solution, by setting the first abutment part 120 and the second abutment part 130, can precisely control the working state of the drive mechanism 300 and the positional relationship between the drive mechanism 300 and the roller brush assembly 200. Of course, the first abutment part 120 and the second abutment part 130 can also be omitted, and the determination can be made through working parameters such as the movement time of the drive mechanism.

[0021] Optionally, in an embodiment where the drive mechanism 300 includes a drive source 310 and a transmission member 320, the bracket 100 has a first abutment portion 120 and a second abutment portion 130 disposed opposite to each other. The first abutment portion 120 is disposed at a first position, and the second abutment portion 130 is disposed at a second position. The second abutment portion 130 serves as a lower limit structure, which can prevent the transmission member 320 from disengaging from the output shaft of the drive source 310 due to excessive operation.

[0022] Optionally, in an embodiment where a positioning through hole 321 is provided on the edge of the transmission member 320 and a positioning protrusion 212 is provided on the top surface 211 of the mounting cavity, the bracket 100 has a first abutment portion 120 and a second abutment portion 130 disposed opposite to each other. The first abutment portion 120 is disposed at a first position and the second abutment portion 130 is disposed at a second position. The positioning protrusion 212 and the second abutment portion 130 are arranged circumferentially at intervals along the output shaft of the drive source 310, thereby avoiding interference between the two and ensuring that the drive mechanism 300 can smoothly abut against the second abutment portion 130.

[0023] In a further optional embodiment, the bracket 100 includes a detachably connected frame body 140 and a cover plate 150. The frame body 140 has a connecting portion 110, which is opposite to the cover plate 150. A first abutting portion 120 is disposed on the cover plate 150, and a second abutting portion 130 is disposed on the connecting portion 110. At least one of the frame body 140 and the cover plate 150 is detachably connected to the drive mechanism 300. That is, the drive mechanism 300 can be detachably connected to the frame body 140. In this case, the drive mechanism 300 can be installed onto the frame body 140 first, and then the cover plate 150 can be installed. Alternatively, the drive mechanism 300 can be detachably connected to the cover plate 150. In this case, the drive mechanism 300 and the cover plate 150 can be modularly assembled first, and then both can be installed onto the frame body 140 together. The drive mechanism 300 can also be detachably connected to both the frame body 140 and the cover plate 150. In this case, the connection area between the drive mechanism 300 and the bracket 100 is larger, which is beneficial to improving the connection firmness of the drive mechanism 300. The drive mechanism 300 and the roller brush assembly 200 are located between the cover plate 150 and the connecting part 110, making the assembly of each structure more compact. In this design, the frame 140, the cover plate 150 and the drive mechanism 300 are all connected by a detachable connection, which facilitates the assembly and disassembly of each structure. In another optional embodiment, the cleaning robot further includes a first position detection element 610, a second position detection element 620, and a control element. The first position detection element 610 and the second position detection element 620 are both disposed on the bracket 100. The first position detection element 610 forms a first abutment portion 120, and the second position detection element 620 forms a second abutment portion 130. The control element is electrically connected to the first position detection element 610, the second position detection element 620, and the drive mechanism 300, respectively. Specifically, when the cleaning robot needs to climb a slope or cross an obstacle, the drive mechanism 300 and the roller brush assembly 200 are positioned and coordinated. When the drive mechanism 300 drives the roller brush assembly 200 to rise relative to the support 100 and abut against the first position detection element 610, the first position detection element 610 sends a first signal to the control element. At this time, the control element controls the drive mechanism 300 to stop working. After climbing the slope or crossing the obstacle is completed, the drive mechanism 300 drives the roller brush assembly 200 to descend to the ground. The drive mechanism 300 continues to work until it abuts against the second position detection element 620. At this time, the second position detection element 620 sends a second signal to the control element. At this time, the control element controls the drive mechanism 300 to stop working. It should be noted that the first signal and the second signal mentioned above are different signals. This solution uses a first position detection element 610 and a second position detection element 620 to detect the positions of the roller brush assembly 200 and the drive mechanism 300 respectively, thereby precisely controlling the working state of the drive mechanism 300, improving the positional accuracy of the roller brush assembly 200 and the drive mechanism 300, and preventing the roller brush assembly 200 from damaging the bracket 100 and the drive mechanism 300 from damaging the roller brush assembly 200. The embodiments of this application have been described above with reference to the accompanying drawings. However, this application is not limited to the specific embodiments described above. The specific embodiments described above are merely illustrative and not restrictive. Those skilled in the art can make many other forms under the guidance of this application without departing from the spirit and scope of the claims, and all of these forms are within the protection scope of this application.

Claims

1. A cleaning robot, characterized in that, The device includes a support (100), a roller brush assembly (200), and a drive mechanism (300). The drive mechanism (300) is disposed on the support (100). Both the support (100) and the drive mechanism (300) are movably connected to the roller brush assembly (200). The drive mechanism (300) can drive the roller brush assembly (200) to move up and down relative to the support (100) between a first position and a second position, where the first position is higher than the second position. When the roller brush assembly (200) is in the first position, the drive mechanism (300) is positioned and engaged with the roller brush assembly (200), and the roller brush assembly (200) is fixed relative to the bracket (100); when the roller brush assembly (200) is in the second position, the drive mechanism (300) is disengaged from the roller brush assembly (200), and the roller brush assembly (200) can move relative to the bracket (100).

2. The cleaning robot according to claim 1, wherein, The roller brush assembly (200) is provided with a mounting protrusion (210) having a mounting cavity. The connecting portion (110) of the bracket (100) extends through the mounting protrusion (210) into the mounting cavity. The drive mechanism (300) includes a drive source (310) and a transmission member (320). The transmission member (320) is threadedly connected to the output shaft of the drive source (310) and slidably connected to the roller brush assembly (200). At least a portion of the transmission member (320) and the output shaft of the drive source (310) are disposed within the mounting cavity. The transmission member (320) is located between the connecting portion (110) and the top surface (211) of the mounting cavity. The drive source (310) can drive the roller brush assembly (200) to move up and down via the transmission member (320). When the roller brush assembly (200) is in the first position, the transmission member (320) is positioned and engaged with the top surface (211); when the roller brush assembly (200) is in the second position, the transmission member (320) is disengaged from the top surface (211), and there is a preset distance between the transmission member (320) and the top surface (211).

3. The cleaning robot according to claim 2, wherein, The transmission component (320) has a plate-like structure. The edge of the transmission component (320) is provided with a positioning through hole (321). The positioning through hole (321) is arranged at a distance from the output shaft of the drive source (310). The top surface (211) of the mounting cavity is provided with a positioning protrusion (212). During the process of the drive source (310) driving the transmission member (320) to move relative to the top surface (211) along the lifting direction of the roller brush assembly (200), the positioning through hole (321) and the positioning protrusion (212) are slidably engaged, and the positioning protrusion (212) and the positioning through hole (321) are circumferentially positioned and engaged along the output shaft of the drive source (310).

4. The cleaning robot according to claim 3, wherein, The number of positioning through holes (321) is at least two, and each positioning through hole (321) is arranged circumferentially at intervals along the output shaft of the drive source (310). The positioning protrusion (212) is provided in a one-to-one correspondence with the positioning through hole (321).

5. The cleaning robot according to claim 2, wherein, The cleaning robot also includes a guide shaft (400), the two ends of which are connected to the bracket (100) respectively. The guide shaft (400) and the drive mechanism (300) are spaced apart along the length of the roller brush assembly (200). The first end of the guide shaft (400) extends through the mounting protrusion (210) into the mounting cavity and is connected to the connecting part (110). The mounting protrusion (210) is slidably sleeved on the guide shaft (400).

6. The cleaning robot according to claim 5, wherein, The number of guide shafts (400) is at least two, including a first guide shaft (400') and a second guide shaft (400") spaced apart along the length direction of the roller brush assembly (200), and the drive mechanism (300) is spaced apart between the first guide shaft (400') and the second guide shaft (400").

7. The cleaning robot according to claim 6, wherein, The roller brush assembly (200) includes a housing (220), a roller brush (230), and a drive member (240). The roller brush (230) and the drive member (240) are both disposed in the housing (220). The roller brush (230) is rotatably connected to the housing (220). The drive member (240) can drive the roller brush (230) to rotate relative to the housing (220). The housing (220) is provided with the mounting protrusion (210). The drive member (240), the first guide shaft (400'), and the second guide shaft (400") are arranged sequentially at intervals along the extension direction of the central axis of the roller brush (230). The cleaning robot also includes an elastic drive member (500). The elastic drive member (500) is sleeved on the second guide shaft (400"). The first end of the elastic drive member (500) abuts against the bracket (100), and the second end of the elastic drive member (500) abuts against the mounting protrusion (210).

8. The cleaning robot according to claim 5, wherein, The mounting protrusion (210) includes a main body (213) and a linear bearing (214). One end of the linear bearing (214) extends through the main body (213) into the mounting cavity. The other end of the linear bearing (214) is provided with a flange (214a). The flange (214a) is stacked on the main body (213). The linear bearing (214) is slidably sleeved on the guide shaft (400).

9. The cleaning robot according to claim 5, wherein, The mounting protrusion (210) includes a first connecting protrusion (215) and a second connecting protrusion (216) spaced apart. The first connecting protrusion (215) has a first receiving cavity, and the second connecting protrusion (216) has a second receiving cavity. The connecting portion (110) includes a first connecting segment (111) and a second connecting segment (112) spaced apart. The first connecting segment (111) extends through the first connecting protrusion (215) into the first receiving cavity, and the second connecting segment (112) extends through the second connecting protrusion (216) into the second receiving cavity. The first end of the guide shaft (400) is connected to the second connecting segment (112), and the second connecting protrusion (216) is slidably sleeved on the guide shaft (400).

10. The cleaning robot of claim 1, wherein, The bracket (100) has a first abutment portion (120) and a second abutment portion (130) disposed opposite to each other, the first abutment portion (120) being disposed at the first position and the second abutment portion (130) being disposed at the second position. When the roller brush assembly (200) is in the first position, the roller brush assembly (200) abuts against the first abutting portion (120); when the roller brush assembly (200) is in the second position, the drive mechanism (300) abuts against the second abutting portion (130). 11.The cleaning robot according to claim 10, wherein, The bracket (100) includes a detachably connected frame (140) and a cover plate (150). The frame (140) has a connecting portion (110) opposite to the cover plate (150). A first abutment portion (120) is disposed on the cover plate (150), and a second abutment portion (130) is disposed on the connecting portion (110). At least one of the frame (140) and the cover plate (150) is detachably connected to the drive mechanism (300). A portion of the drive mechanism (300) and the roller brush assembly (200) are located between the cover plate (150) and the connecting portion (110).

12. The cleaning robot of claim 10, wherein, The cleaning robot also includes a first position detection component (610), a second position detection component (620), and a control component. The first position detection component (610) and the second position detection component (620) are both disposed on the bracket (100). The first position detection component (610) forms the first abutment portion (120), and the second position detection component (620) forms the second abutment portion (130). The control component is electrically connected to the first position detection component (610), the second position detection component (620), and the drive mechanism (300), respectively.

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