Cleaning device

Abstract

The present disclosure provides a cleaning device. The cleaning device comprises a housing, a telescopic assembly, a circuit board, a protective cover, and a fan. The telescopic assembly comprises a motor, a transmission mechanism, and a protruding member. The transmission mechanism and the motor are both located inside the housing. The transmission mechanism is configured such that, under the drive of the motor, the transmission mechanism drives the protruding member to extend out of the housing or retract into the housing. The circuit board is located inside the housing and is electrically connected to the motor. The protective cover covers at least the circuit board. The fan is disposed inside the housing, and an air outlet of the fan faces the protective cover. The cleaning device provided by the present disclosure enables protection of the circuit board.

Description

A cleaning device Cross-reference to related applications

[0001] This disclosure claims priority to Chinese patent application No. 202422533631.1, filed on October 18, 2024, the entire contents of which are incorporated herein by reference. Technical Field

[0002] This disclosure relates to the field of cleaning equipment technology, and more particularly to a cleaning device. Background Technology

[0003] Cleaning equipment such as robotic vacuum cleaners use fans to collect dust and other foreign objects. In related technologies, to increase heat dissipation from the circuit board, the fan's air outlet is directed at the circuit board. This can cause dust and other foreign objects to enter the circuit board, affecting its operation. Summary of the Invention

[0004] In view of this, embodiments of the present disclosure aim to provide a cleaning device capable of protecting circuit boards.

[0005] To achieve the above objectives, the technical solutions of the embodiments of this disclosure are as follows.

[0006] This disclosure provides a cleaning device, comprising:

[0007] case;

[0008] The telescopic assembly includes a motor, a transmission mechanism, and a protrusion. The transmission mechanism and the motor are both located inside the housing. The transmission mechanism is configured to drive the protrusion to extend out of the housing or retract into the housing under the drive of the motor.

[0009] A circuit board, located inside the housing and electrically connected to the motor;

[0010] A protective cover, the protective cover being disposed at least over the circuit board; and

[0011] A fan is installed inside the housing, with the fan's outlet facing the protective cover.

[0012] In one embodiment, the cleaning device further includes a vertical plate disposed within the housing, wherein the circuit board, a portion of the transmission mechanism, and the protective cover are sequentially stacked on one side of the vertical plate, and the motor is disposed on the other side of the vertical plate. The output shaft of the motor passes through the vertical plate and is connected to the transmission mechanism, enabling a portion of the transmission mechanism to move between the circuit board and the protective cover.

[0013] In one embodiment, the transmission mechanism includes a first link, a second link, a third link, and a fourth link. The first link is connected to the output shaft. One end of the second link is hinged to one end of the first link. The other end of the second link is hinged to one end of the third link and one end of the fourth link, respectively. The other end of the third link is hinged to the side of the housing away from the protrusion. The other end of the fourth link is hinged to the protrusion. A portion of the first link is movable between the circuit board and the protective cover.

[0014] In one embodiment, the surface of the upright plate is further provided with a first limiting member and a second limiting member, which are respectively located on the rotation path of the first connecting rod.

[0015] In one embodiment, the upright plate has a frame protruding from the surface of the upright plate, the frame being arranged at least around the rotation path of one end of the first connecting rod, the portions of the frame located on both sides of the output shaft in the radial direction of the output shaft extending toward the output shaft to form the first limiting member and the second limiting member, the protective cover being disposed on the frame and forming a storage space with the frame, the circuit board being located in the storage space, and the first connecting rod being at least partially accommodated in the storage space.

[0016] In one embodiment, the protective cover is detachably connected to the frame.

[0017] In one embodiment, the telescopic assembly includes a housing disposed within the housing, a protrusion disposed within the housing, the housing having a clearance opening communicating with its interior, a transmission mechanism partially disposed within the telescopic cavity, and a portion of the transmission mechanism extending through the clearance opening and connected to the motor drive.

[0018] In one embodiment, a slider is formed in one of the walls of the telescopic cavity and the protrusion, and a groove is formed in the other of the walls of the telescopic cavity and the protrusion, and the slider slides in conjunction with the groove.

[0019] In one embodiment, the housing has an opening communicating with its interior, and the protrusion is configured to extend at least partially out of the housing or retract into the housing through the opening. The protrusion is configured such that one end extending out of the housing and away from the housing has a closing cap, and the area of ​​the projection of the opening in a plane perpendicular to the extension direction of the protrusion is located within the area of ​​the projection of the closing cap in a plane perpendicular to the extension direction of the protrusion.

[0020] In one embodiment, the protrusion is a lidar.

[0021] This disclosure provides a cleaning device. By housing the motor, transmission mechanism, circuit board, and fan within a housing, the device offers enhanced protection for these components, extending their lifespan. The motor drives the transmission mechanism to extend or retract a protruding component from the housing, allowing it to retract when not in use or to avoid objects, thus improving protection. Since the circuit board is connected to the motor, a protective cover at least partially covers the circuit board, and the fan's outlet faces the cover. The cover blocks the air blown from the outlet, reducing the risk of dust or other foreign matter entering the circuit board and causing malfunctions or limitations. This improves the operational stability of the circuit board and the telescopic components. Attached Figure Description

[0022] Figure 1 is a schematic diagram of the structure of a cleaning device provided in an embodiment of this disclosure, wherein a protrusion extends out of the receiving space.

[0023] Figure 2 is a structural schematic diagram of the protrusion, telescopic assembly, protective cover, and upright plate in Figure 1.

[0024] Figure 3 is a structural schematic diagram of the protrusion, telescopic assembly, circuit board, position sensor and upright plate in Figure 1.

[0025] Figure 4 is a schematic diagram of the protrusion, telescopic assembly, circuit board and position sensor in Figure 1.

[0026] Figure 5 is a schematic diagram of the transmission mechanism, circuit board and position sensor in Figure 1.

[0027] Figure 6 is a schematic diagram of the transmission mechanism, circuit board and position sensor provided in another embodiment of the present disclosure, wherein the stop is located in the sensing groove of the retractable sensor.

[0028] Reference numerals: 100, Cleaning equipment; 1, Housing; 1a, Receiving space; 1a1, First cavity; 1a2, Second cavity; 1b, Opening; 2, Telescopic assembly; 21, Motor; 22, Transmission mechanism; 221, First connecting rod; 2211, Stop; 222, Second connecting rod; 223, Third connecting rod; 224, Fourth connecting rod; 23, Protrusion; 23a, Slide groove; 23b, Sealing cover; 24, Enclosure; 24b, Clearance opening; 24c, Telescopic opening; 3, Circuit board; 4, Protective cover; 5, Partition; 6, Vertical plate; 61, First limiting member; 62, Second limiting member; 63, Frame; 63a, Storage space; 63b, Notch; 7, Position sensor; 7a, Sensing groove; 71, Extending sensor; 72, Retracting sensor. Detailed Implementation

[0029] It should be noted that, unless otherwise specified, the embodiments and technical features in the embodiments of this disclosure can be combined with each other, and the detailed descriptions in the specific embodiments should be understood as explanations of the purpose of this disclosure and should not be regarded as undue limitations on this disclosure.

[0030] The present disclosure will now be described in further detail with reference to the accompanying drawings and specific embodiments. The terms "first," "second," etc., used in the embodiments of this disclosure are for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly including at least one feature. In the description of the embodiments of this disclosure, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0031] This disclosure provides a cleaning device. Referring to Figures 1 to 6, the cleaning device 100 includes a housing 1, a telescopic assembly 2, a circuit board 3, a protective cover 4, and a fan. The telescopic assembly 2 includes a motor 21, a transmission mechanism 22, and a protrusion 23. Both the transmission mechanism 22 and the motor 21 are located within the housing 1. The transmission mechanism 22 is configured to drive the protrusion 23 to extend outside the housing 1 or retract inside the housing 1 under the drive of the motor 21. The circuit board 3 is located within the housing 1 and is electrically connected to the motor 21. The protective cover 4 covers at least the circuit board 3. The fan is disposed within the housing 1, with its air outlet facing the protective cover 4.

[0032] The cleaning device 100 provided in this embodiment protects the motor 21, transmission mechanism 22, circuit board 3, and fan to a certain extent by housing them within the housing 1, thus extending their service life. The motor 21 drives the transmission mechanism 22 to extend or retract the protrusion 23 into the housing 1, allowing it to retract into the housing 1 when not in use or to avoid objects, further enhancing protection for the protrusion 23. Since the circuit board 3 is connected to the motor 21, at least a portion of the protective cover 4 covers the circuit board 3, and the fan's outlet faces the protective cover 4. The protective cover 4 blocks the air blown out by the fan from the outlet, reducing the likelihood of dust or other foreign objects entering the circuit board 3 and causing malfunction or limitation, thereby improving the operational stability of the circuit board 3 and the telescopic assembly 2.

[0033] In one embodiment, the housing 1 has a receiving space 1a and an opening 1b communicating with the receiving space 1a. The motor 21, the transmission mechanism 22, the circuit board 3 and the fan are all disposed in the receiving space 1a. The motor 21 drives the transmission mechanism 22 to drive the protrusion 23 to extend or retract into the receiving space 1a.

[0034] In one embodiment, the cleaning device 100 may be a robotic vacuum cleaner.

[0035] In one embodiment, the foreign object may also include hair, gravel, and paper scraps.

[0036] In one embodiment, the extension and retraction direction of the protrusion 23 can be the top-bottom direction.

[0037] It should be noted that the top and bottom directions can be either up and down or vertical. Top refers to the direction pointing towards the ceiling, that is, up or more specifically, vertically upward, while bottom is the opposite of top, that is, down or more specifically, vertically downward.

[0038] In one embodiment, the opening direction of the opening 1b can be set to the top (i.e., upward).

[0039] In one embodiment, R1 in Figure 2 can be the top-bottom direction.

[0040] In one embodiment, the shape of the housing 1 is not limited. For example, the housing 1 is projected along the top-bottom direction, and the shape of the projection of the housing 1 in a plane (e.g., a horizontal plane) perpendicular to the top-bottom direction can be circular.

[0041] In one embodiment, the protrusion 23 is a lidar. Here, when the motor 21 drives the transmission mechanism 22 to extend the protrusion 23 out of the receiving space 1a from the opening 1b, the lidar can perceive the surrounding environment and acquire a three-dimensional model of the surrounding environment. Then, the cleaning device 100 can draw a map based on the acquired three-dimensional model data and plan the optimal cleaning path according to the map to improve the cleaning ability and cleaning efficiency of the cleaning device 100.

[0042] In one embodiment, referring to FIG1, the cleaning device 100 includes a partition 5, which is disposed within a receiving space 1a to divide the receiving space 1a into a first cavity 1a1 and a second cavity 1a2. A motor 21, a transmission mechanism 22, a circuit board 3, a protective cover 4, and a fan are all disposed in the first cavity 1a1, which communicates with an opening 1b. A dust suction port is formed in the housing 1, which communicates with the second cavity 1a2. A dust bag is disposed within the second cavity 1a2, with its inlet communicating with the dust suction port and its outlet communicating with the fan's air inlet. Thus, driven by the fan, dust and other foreign objects can be collected in the dust bag.

[0043] In one embodiment, please refer to Figures 1 to 3. The telescopic component 2 includes a housing 24 disposed within the housing 1. A protrusion 23 is disposed within the housing 24. The housing 24 has a clearance opening 24b communicating with its interior. A portion of the transmission mechanism 22 is disposed within the housing 24, and another portion of the transmission mechanism 22 extends through the clearance opening 24b and is driven by the motor 21.

[0044] In one embodiment, the housing 24 may be disposed in the first cavity 1a1.

[0045] Here, by placing the protrusion 23 inside the housing 24, the protrusion 23 can be protected, thereby further improving its service life. By providing the clearance opening 24b, the movement of the transmission mechanism 22 can be avoided, thereby reducing structural interference with the transmission mechanism 22.

[0046] In one embodiment, the enclosure 24 has a telescopic cavity and a telescopic opening 24c. Both the clearance opening 24b and the telescopic opening 24c are connected to the telescopic cavity. The telescopic opening 24c is connected to the opening 1b. The protrusion 23 is disposed in the telescopic cavity. Part of the transmission mechanism 22 is disposed in the telescopic cavity. The other part of the transmission mechanism 22 extends out of the clearance opening 24b and is driven by the motor 21.

[0047] Thus, since the telescopic port 24c is connected to the opening 1b, the protruding part 23 can enter and exit the housing 1 through the telescopic port 24c and the opening 1b.

[0048] In one embodiment, the opening direction of the clearance opening 24b and the opening direction of the telescopic opening 24c can be perpendicular to each other, so as to avoid structural interference between the protrusion 23 and the transmission mechanism (e.g., the transmission mechanism 22).

[0049] In one embodiment, the shape of the housing 24 is not limited. Specifically, both the housing 24 and the protrusion 23 are projected along the top-bottom direction, and the shape of the projection of the housing 24 in a plane perpendicular to the top-bottom direction (e.g., a horizontal plane) is adapted to the shape of the projection of the protrusion 23 in a plane perpendicular to the top-bottom direction.

[0050] In one embodiment, referring to FIG4, a slider is formed in one of the inner wall of the housing 24 and the protrusion 23, and a groove 23a is formed in the other of the inner wall of the housing 24 and the protrusion 23. The slider and the groove 23a slide in cooperation along the extension and retraction direction of the protrusion 23.

[0051] In one embodiment, the wall of the telescopic cavity may be formed with a slider extending along the telescopic direction of the protrusion 23, and a groove 23a may be formed on the periphery of the protrusion 23, which slides in cooperation with the slider. In this way, on the one hand, the groove 23a can provide a smooth and accurate movement path, and the slider can slide easily within the groove 23a, making the entire movement process more precise and controllable; on the other hand, the groove 23a can provide additional support and stability, preventing the slider from wobbling or becoming unstable during movement, resulting in good movement stability.

[0052] In one embodiment, referring to Figures 2 to 4, the housing 1 has an opening 1b communicating with its interior. The protrusion 23 can extend at least partially out of the housing 1 or retract into the housing 1 through the opening 1b. The protrusion 23 is configured such that a closing cover 23b is provided at the end extending out of the housing 1 and away from the movement of the housing 1. Both the closing cover 23b and the opening 1b are projected along the extension and retraction direction of the protrusion 23, and the area of ​​the projection of the opening 1b in a plane perpendicular to the extension and retraction direction (e.g., a horizontal plane) is located within the area of ​​the projection of the closing cover 23b in the plane perpendicular to the extension and retraction direction.

[0053] In one embodiment, the sealing cover 23b can be disposed on the side of the protrusion 23 that extends out of the receiving space 1a along the telescopic direction of the protrusion 23 and moves away from the receiving space 1a. Here, when the motor 21 drives the transmission mechanism 22 to retract the protrusion 23 into the receiving space 1a, the sealing cover 23b can be placed on the opening 1b. In this way, after the protrusion 23 retracts into the receiving space 1a, the sealing cover 23b can reduce the entry of dust and other foreign objects into the receiving space 1a through the opening 1b, improve the protection of the parts located in the receiving space 1a, and extend the service life of the parts.

[0054] In one embodiment, referring to Figures 2 and 3, the cleaning device 100 further includes a vertical plate 6 disposed within the housing 1. The circuit board 3, a portion of the transmission mechanism 22, and the protective cover 4 are sequentially stacked on one side of the vertical plate 6. The motor 21 is disposed on the other side of the vertical plate 6. The output shaft of the motor 21 passes through the vertical plate 6 and is connected to the transmission mechanism 22, so that a portion of the transmission mechanism 22 can move between the circuit board 3 and the protective cover 4.

[0055] In one embodiment, one end of the upright plate 6 can be disposed on the outer surface of the enclosure 24 and near the clearance opening 24b, and the other end of the upright plate 6 extends away from the enclosure 24. The circuit board 3 can be disposed on the side of the upright plate 6 near the fan along its thickness direction, the base of the motor 21 can be disposed on the side of the upright plate 6 away from the circuit board 3 along its thickness direction, the output shaft of the motor 21 passes through the upright plate 6 along its thickness direction, the portion of the transmission mechanism 22 passing through the clearance opening 24b can be disposed on the side of the circuit board 3 near the fan along the thickness direction of the upright plate 6, and drivenly connected to the output shaft of the motor 21, and the protective cover 4 can be disposed on the side of the transmission mechanism 22 extending out of the clearance opening 24b along the thickness direction of the upright plate 6 near the fan. In this way, the drive transmission action between the transmission mechanism 22 and the output shaft can be carried out between the circuit board 3 and the protective cover 4. On the one hand, it can reduce the noise during transmission to a certain extent, making the cleaning equipment 100 quieter during operation; on the other hand, it can reduce the impact of dust and other foreign objects on the transmission operation and improve the reliability of the transmission; furthermore, it is conducive to the rational use of the overall space inside the cleaning equipment 100, with a compact structure and high space utilization.

[0056] In one embodiment, the enclosure 24 and the upright plate 6 can be integrally formed, which can improve the connection strength between the upright plate 6 and the enclosure 24, thereby improving the support and load-bearing capacity of the upright plate 6.

[0057] In one embodiment, referring to Figures 4 to 6, the transmission mechanism 22 includes a first link 221, a second link 222, a third link 223, and a fourth link 224. The first link 221 is connected to the output shaft. One end of the second link 222 is hinged to one end of the first link 221. The other end of the second link 222 is hinged to one end of the third link 223 and one end of the fourth link 224, respectively. The other end of the third link 223 is hinged to the side of the housing 1 away from the protrusion 23 (e.g., the bottom side). The other end of the fourth link 224 is hinged to the protrusion 23. A portion of the first link 221 can move between the circuit board 3 and the protective cover 4.

[0058] In one embodiment, a pivot hole is formed in the middle of the first connecting rod 221 along its length direction, and the output shaft is inserted into the pivot hole to transmit torque. One end of the first connecting rod 221 along its length direction is located between the circuit board 3 and the protective cover 4. One end of the second connecting rod 222 can be hinged to the other end of the first connecting rod 221 along its length direction. The other end of the second connecting rod 222 along its length direction is hinged to one end of the third connecting rod 223 and one end of the fourth connecting rod 224, respectively. The other end of the third connecting rod 223 along its length direction is hinged to the wall surface of the receiving space 1a on the side opposite to the opening 1b (e.g., the bottom side) along the extension and retraction direction of the protrusion 23. The other end of the fourth connecting rod 224 along its length direction is hinged to the protrusion 23. In other words, the hinge points of the fourth link 224 and the protrusion 23 and the third link 224 and the housing 1 are spaced apart along the extension and retraction direction of the protrusion 23, while the hinge points of the second link 222 and the third link 223 and the second link 222 and the fourth link 224 are all located between the hinge point of the third link 223 and the housing 1 and the hinge point of the fourth link 224 and the protrusion 23.

[0059] Thus, since the first link 221 is connected to the output shaft, it is essentially fixed (specifically, it cannot translate but can rotate around a fixed point (e.g., the hinge point between the first link 221 and the output shaft)). One end of the third link 223 is hinged to the housing 1, also essentially fixed (specifically, it cannot translate but can rotate around a fixed point (e.g., the hinge point between the third link 223 and the housing 1)). The second link 222 is hinged to both the first link 221 and the third link 223, making the first link 221, second link 222, and third link 223 equivalent to a four-bar linkage. When the motor 21 drives the first link 221 to rotate through its output shaft, the first link 221 acts like a crank. The first link 221 can drive the third link 223 to swing around its hinge point with the housing 1 (i.e., with its hinge point with the housing 1 as the center). At this time, the third link 223 acts like a rocker arm. Furthermore, one end of the fourth link 224 is hinged to the hinge point of the second link 222 and the third link 223, and the other end of the fourth link 224 is hinged to the protrusion 23. This allows the third link 223 to swing, causing the fourth link 224 to push the protrusion 23 to move along the extension / retraction direction of the protrusion 23, thereby extending or retracting the opening 1b. In this way, the extension and retraction of the protrusion 23 are achieved through a link structure, resulting in a compact structure and relatively smooth transmission.

[0060] In one embodiment, rotating the output shaft clockwise causes the protrusion 23 to extend out of the receiving space 1a through the opening 1b, while rotating the output shaft counterclockwise causes the protrusion 23 to retract into the receiving space 1a through the opening 1b.

[0061] In one embodiment, referring to Figures 2 and 3, the surface of the upright plate 6 is further provided with a first limiting member 61 and a second limiting member 62. The first limiting member 61 and the second limiting member 62 are respectively disposed on the rotation path of the first connecting rod 221.

[0062] In one embodiment, the first limiting member 61 and the second limiting member 62 can both be disposed on the side of the upright plate 6 near the fan along its thickness direction. The first connecting rod 221 has an extended limit position where the protrusion 23 extends to its limit and a retracted limit position where it retracts to its limit in its rotational direction. The first limiting member 61 can block the first connecting rod 221 when it rotates to the extended limit position, and the second limiting member 62 can block the first connecting rod 221 when it rotates to the retracted limit position.

[0063] In this way, by setting the first limiting member 61 and the second limiting member 62, the situation where the first connecting rod 221 rotates excessively, causing structural interference between the first connecting rod 221 and the second connecting rod 222, and the situation where the protruding member 23 does not extend or retract properly can be reduced, resulting in good working stability.

[0064] In one embodiment, referring to Figures 3 to 6, the cleaning device 100 includes two position sensors 7 and a controller. The controller is electrically connected to both the position sensors 7 and the motor 21. Both position sensors 7 can be mounted on a circuit board 3, and each position sensor 7 has a sensing groove 7a. The two position sensors 7 are respectively an extension sensor 71 and a retraction sensor 72. A stop 2211 is formed at the end of the first connecting rod 221 away from its hinge point with the second connecting rod 222. When the stop 2211 rotates into the sensing groove 7a of the extension sensor 71, the extension sensor 71 can send an extension-in-position signal to the controller. After receiving the extension-in-position signal, the controller controls the motor 21 to shut off. When the stop 2211 rotates into the sensing groove 7a of the retraction sensor 72, the retraction sensor 72 can send a retraction-in-position signal to the controller. After receiving the retraction-in-position signal, the controller controls the motor 21 to shut off. This reduces the possibility of the protruding part 23 not extending or retracting completely, resulting in a high degree of automation.

[0065] In one embodiment, referring to Figures 3 to 6, the first limiting member 61 corresponds to the extended sensor 71, and the second limiting member 62 corresponds to the retracted sensor 72. That is, when the sensing slot 7a of the extended sensor 71 senses the stop 2211, the controller can control the motor 21 to close, reducing the possibility of the first link 221 colliding with the first limiting member 61. Similarly, when the sensing slot 7a of the retracted sensor 72 senses the stop 2211, the controller can control the motor 21 to close, further reducing the possibility of the first link 221 colliding with the second limiting member 62, thus ensuring high safety.

[0066] In one embodiment, referring to Figures 2 and 3, the upright plate 6 is constructed with a frame 63 protruding from the surface of the upright plate 6. The frame 63 is arranged at least around the rotation path of one end of the first connecting rod 221. The portions of the frame 63 located on both sides of the output shaft in the radial direction (specifically, the diametrical direction) of the output shaft extend toward the direction close to the output shaft (i.e. toward the output shaft) to form a first limiting member 61 and a second limiting member 62. The protective cover 4 is disposed on the frame 63 and forms a storage space 63a with the frame 63. The circuit board 3 is located in the storage space 63a. The first connecting rod 221 is at least partially accommodated in the storage space 63a.

[0067] In one embodiment, one end of the frame 63 can be connected to the upright plate 6, and the other end of the frame 63 can extend along the thickness direction of the upright plate 6 towards the fan (i.e., toward the fan). The protective cover 4 is placed on the extended end (i.e., the free end) of the frame 63 to jointly define the storage space 63a. The circuit board 3 and the position sensor 7 are both located in the storage space 63a. The portion of the frame 63 located on both sides of the output shaft along the radial direction of the output shaft extends towards the output shaft to form a first limiting member 61 and a second limiting member 62. A notch 63b communicating with the storage space 63a is formed between the first limiting member 61 and the second limiting member 62. One end of the first connecting rod 221 with a stop 2211 can be located in the storage space 63a, and the other end of the first connecting rod 221 along its length direction passes through the notch 63b and is hinged to the second connecting rod 222.

[0068] In this way, by setting the frame 63 and cooperating with the protective cover 4, on the one hand, the parts located in the storage space 63a can be protected to reduce the impact of dust and other foreign objects entering the storage space 63a on the function of the parts; on the other hand, due to the obstruction of the protective cover 4, the air exhausted from the air outlet can be reduced from entering the storage space 63a. This not only optimizes the air outlet path and reduces the obstruction of the air outlet path, but also reduces the whistling sound caused by the air blowing into the storage space 63a.

[0069] Understandably, due to the presence of the frame 63, the storage space 63a is roughly an annular cavity, and the notch 63b is equivalent to a whistle opening. Thus, when air blows into the storage space 63a, it may cause a whistling sound.

[0070] In one embodiment, the protective cover 4 is detachably connected to the frame 63. This detachable connection between the protective cover 4 and the frame 63 facilitates the removal and installation of the protective cover 4, aiding in inspection and maintenance.

[0071] In one embodiment, the cleaning device 100 includes fasteners that pass through the protective cover 4 and the frame 63. In another embodiment, the first limiting member 61 and the portion of the frame 63 near the second limiting member 62 may each have a first mounting hole, and the corresponding position of the protective cover 4 has a second mounting hole. The fasteners can pass through the first and second mounting holes, thereby improving the connection strength between the protective cover 4 and the frame 63 and reducing the possibility of the protective cover 4 falling off.

[0072] In one embodiment, the fastener may be a bolt or screw, etc.

[0073] In one embodiment, the frame 63 and the protective cover 4 can be connected by a snap-fit.

[0074] The above description is merely a preferred embodiment of this disclosure and is not intended to limit the scope of this disclosure. Various modifications and variations can be made to this disclosure by those skilled in the art. All modifications, equivalent substitutions, improvements, etc., within the spirit and principles of this disclosure are included within the scope of protection of this disclosure.

Claims

1. A cleaning apparatus, characterized by, include: case; The telescopic assembly includes a motor, a transmission mechanism, and a protrusion. The transmission mechanism and the motor are both located inside the housing. The transmission mechanism is configured to drive the protrusion to extend out of the housing or retract into the housing under the drive of the motor. A circuit board, located inside the housing and electrically connected to the motor; A protective cover, the protective cover being disposed at least over the circuit board; and A fan is installed inside the housing, with the fan's outlet facing the protective cover.

2. The cleaning apparatus of claim 1, wherein, The cleaning device also includes a vertical plate disposed inside the housing. The circuit board, a portion of the transmission mechanism, and the protective cover are sequentially stacked on one side of the vertical plate. The motor is disposed on the other side of the vertical plate. The output shaft of the motor passes through the vertical plate and is connected to the transmission mechanism, so that a portion of the transmission mechanism can move between the circuit board and the protective cover.

3. The cleaning apparatus of claim 2, wherein, The transmission mechanism includes a first link, a second link, a third link, and a fourth link. The first link is connected to the output shaft. One end of the second link is hinged to one end of the first link. The other end of the second link is hinged to one end of the third link and one end of the fourth link, respectively. The other end of the third link is hinged to the side of the housing away from the protrusion. The other end of the fourth link is hinged to the protrusion. A portion of the first link is movable between the circuit board and the protective cover.

4. The cleaning apparatus of claim 3, wherein, The surface of the upright plate is also provided with a first limiting member and a second limiting member, which are respectively located on the rotation path of the first connecting rod.

5. The cleaning apparatus of claim 4, wherein, The upright plate has a frame protruding from the surface of the upright plate. The frame is arranged at least around the rotation path of one end of the first connecting rod. The portion of the frame located on both sides of the output shaft in the radial direction of the output shaft extends toward the output shaft to form the first limiting member and the second limiting member. The protective cover is disposed on the frame and forms a storage space with the frame. The circuit board is located in the storage space. The first connecting rod is at least partially accommodated in the storage space.

6. The cleaning apparatus of claim 5, wherein, The protective cover is detachably connected to the frame.

7. The cleaning apparatus according to any one of claims 1 to 6, characterized in that, The telescopic assembly includes a housing disposed within the housing, a protrusion disposed within the housing, the housing having a clearance opening communicating with its interior, a transmission mechanism partially disposed within the housing, and a portion of the transmission mechanism extending out of the housing and connected to the motor drive.

8. The cleaning apparatus of claim 7, wherein, A slider is formed on the inner wall of the enclosure and one of the protrusions, and a groove is formed on the inner wall of the enclosure and the other of the protrusions, with the slider slidingly engaging with the groove.

9. The cleaning apparatus according to any one of claims 1 to 8, characterized in that, The housing has an opening communicating with its interior. The protrusion is configured to extend at least partially out of the housing or retract into the housing through the opening. The protrusion is configured such that the end extending out of the housing and away from the housing has a closed cover. The area of ​​the projection of the opening in a plane perpendicular to the extension direction of the protrusion is located in the area of ​​the projection of the closed cover in a plane perpendicular to the extension direction of the protrusion.

10. The cleaning apparatus according to any one of claims 1 to 9, characterized in that, The protrusion is a lidar. The protrusion is a lidar.

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