Dust-proof structure and cleaning robot

Abstract

The present invention discloses a dustproof structure and a cleaning robot. The cleaning robot comprises a machine body and a circuit board mounted on the machine body. The dustproof structure is applied to the cleaning robot. The dustproof structure comprises a dustproof part, which is connected to the circuit board and can also cover the circuit board. The dustproof part covering the circuit board in the present invention can prevent dust from reaching the circuit board, thereby effectively maintaining the circuit board.

Description

Technical Field

[0001] The present invention relates to the technical field of cleaning equipment, and in particular to a dustproof structure and a cleaning robot. Background Art

[0002] A cleaning robot is a self-moving, autonomous cleaning device, which includes household cleaning robots and commercial cleaning robots. Regardless of the type of cleaning robot, it uses components such as batteries, motors, and circuit boards, and will inevitably generate heat during operation.

[0003] In order to dissipate heat inside the cleaning robot, iron sheets or iron blocks can be set on the surface of the battery to cool the battery, or wind blowing heat dissipation can be used to cool the circuit board. However, setting iron sheets or iron blocks has a bulky structure and limited heat dissipation effect, and using wind blowing heat dissipation will allow dust to be brought to the heating element. Therefore, a structure that can prevent dust from the heating element is urgently needed. Summary of the invention

[0004] The main purpose of the present invention is to provide a dustproof structure applied to a cleaning robot, aiming to prevent dust from being applied to a circuit board of the cleaning robot.

[0005] The cleaning robot includes a machine body and a circuit board installed on the machine body. To achieve the above purpose, the dustproof structure proposed in the present invention includes a dustproof part, which is connected to the circuit board and can also cover the circuit board.

[0006] In one embodiment of the present invention, the circuit board has a front side and a back side which are arranged opposite to each other, and the back side is used to be connected to the machine body;

[0007] The dustproof member includes a top plate and a side plate. The top plate is located on one side of the front surface of the circuit board and is spaced apart from the circuit board. The side plate is connected to the top plate and is arranged around the circumference of the circuit board.

[0008] In an embodiment of the present invention, the dustproof member further includes a supporting portion, the supporting portion is disposed on a surface of the top plate facing the circuit board, and the supporting portion extends toward the circuit board and is disposed in contact with the circuit board.

[0009] In one embodiment of the present invention, a support bar is provided on the surface of the top plate facing the circuit board to form the support portion, and a side of the support bar away from the top plate abuts against the circuit board.

[0010] In one embodiment of the present invention, the support bar is spaced apart from the side plate to form a receiving groove together with the top plate and the side plate, and the receiving groove is used to receive the connection terminals on the circuit board.

[0011] In one embodiment of the present invention, a support column is protruding from a surface of the top plate facing the circuit board to form the support portion, and a surface of the support column facing away from the top plate abuts against the circuit board.

[0012] In one embodiment of the present invention, the supporting portion includes a first supporting member and a second supporting member; a support strip is circumferentially arranged on the surface of the top plate facing the circuit board to form the first supporting member, and support columns are protruding from two opposite sides of the surface of the top plate facing the circuit board to form the second supporting member.

[0013] In one embodiment of the present invention, the side end of the side plate away from the top plate is provided with an annular bottom plate extending toward the inner side of the side plate, the annular bottom plate is extended along the circumference of the side plate, and the annular bottom plate is located on one side of the back side of the circuit board.

[0014] In one embodiment of the present invention, the side plate includes a fixed plate and a rotating plate, one side end of the fixed plate is fixedly connected to the top plate, and the other side end of the fixed top plate is extended in a direction close to the circuit board, one side end of the rotating plate is rotatably connected to the top plate, and the other end of the rotating plate is extended in a direction away from the top plate.

[0015] In one embodiment of the present invention, the inner wall surface of the dustproof piece is concavely provided with an escape portion corresponding to the position where the electronic components are arranged on the circuit board, and the inner wall surface of the dustproof piece is convexly provided with a guide portion corresponding to the position where the electronic components are not arranged on the circuit board.

[0016] In one embodiment of the present invention, a weight-reducing groove is formed on a surface of the dust-proof component facing away from the circuit board, and the weight-reducing groove is aligned with the guide portion.

[0017] In an embodiment of the present invention, the dustproof member is provided with a clearance hole penetrating along a direction approaching or away from the circuit board, so that the connection terminals on the circuit board are exposed.

[0018] In an embodiment of the present invention, the dustproof component is made of elastic material.

[0019] The present invention also proposes a cleaning robot, which includes a machine body, a circuit board and the dustproof structure. The circuit board is installed on the machine body. The dustproof structure includes a dustproof part, which is connected to the circuit board and covers the circuit board.

[0020] In one embodiment of the present invention, the dustproof piece of the dustproof structure is detachably connected to the circuit board.

[0021] The technical solution of the present invention adopts a dustproof piece to be connected with a circuit board, and the dustproof piece covers the circuit board, so that the dustproof piece plays a role in preventing dust from reaching the circuit board. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying creative work.

[0023] Figure 1 An exploded schematic diagram of an embodiment of a cleaning robot of the present invention;

[0024] Figure 2 It is a structural schematic diagram of an embodiment of a dustproof part in the present invention;

[0025] Figure 3 It is a cross-sectional schematic diagram of an embodiment of a dustproof member and a circuit board in the present invention;

[0026] Figure 4 It is a cross-sectional schematic diagram of another embodiment of the dustproof member and the circuit board in the present invention;

[0027] Figure 5 It is a cross-sectional schematic diagram of another embodiment of the dustproof member and the circuit board in the present invention;

[0028] Figure 6 It is a structural schematic diagram of another embodiment of the dustproof part in the present invention;

[0029] Figure 7 It is a cross-sectional schematic diagram of another embodiment of the dustproof member and the circuit board in the present invention;

[0030] Figure 8 for Figure 7 Schematic cross-sectional view of the middle top plate with a weight-reducing groove.

[0031] Description of Figure Numbers:

[0032] Label name Label name 1000 Cleaning Robot 14 Ring bottom plate 100 Dust-proof structure 15 Avoidance Department 10 Dust protection parts 16 Guide 11 roof 17 Weight reduction slot 12 Side panels 18 Make way hole 121 Fixed plate 19 Mounting holes 122 Rotating plate 200 Machine body 13 Support 201 Circuit Board 131 Support bar 201a Threaded Hole 132 Support column

[0033] The realization of the purpose, functional features and advantages of the present invention will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0034] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0035] It should be noted that all directional indications in the embodiments of the present invention (such as up, down, left, right, front, back, etc.) are only used to explain the relative position relationship, movement status, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0036] In addition, the descriptions of "first", "second", etc. in the present invention are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, the technical solutions between the various embodiments can be combined with each other, but they must be based on the ability of ordinary technicians in the field to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0037] The present invention proposes a dustproof structure, please refer to Figures 1 to 3 The dustproof structure 100 is applied to a cleaning robot 1000 , and the cleaning robot 1000 includes a machine body 200 and a circuit board 201 installed on the machine body 200 . The dustproof structure 100 includes a dustproof part 10 .

[0038] The dustproof part 10 can be a dustproof shell such as a flat plate, a bent plate, a curved plate, etc. The dustproof part 10 can also be a dustproof component such as a dustproof net, a dustproof bag, etc.

[0039] The dustproof piece 10 can be made of hard materials, such as plastic, metal and the like, or can be made of flexible materials, such as silicone, rubber, cloth and the like.

[0040] The dustproof part 10 can be an integrally formed part by stamping, casting or pouring, or it can be composed of multiple parts. The multiple parts can be fixedly connected by bolt connection, welding connection or adhesive connection, or they can be rotatably connected by pivot joint, ball joint or the like. The multiple parts can also be flexibly connected by rubber parts, springs and other adapters, and no specific limitation is made here.

[0041] The dustproof member 10 is connected to the circuit board 201, and the dustproof member 10 can also cover the circuit board 201. There are many ways to connect the dustproof member 10 to the circuit board 201. For example, the dustproof member 10 has two clamping plates arranged opposite to each other, and the two clamping plates arranged opposite to each other are respectively connected by clamping or sleeve connection with the corresponding two side edges of the circuit board 201; for another example, the dustproof member 10 can be connected to the circuit board 201 by screws; for another example, the dustproof member 10 and the circuit board 201 can be provided with matching buckles and slots, and the dustproof member 10 and the circuit board 201 are buckled and connected by the cooperation of the buckles and slots; of course, the dustproof member 10 can also be connected to the circuit board 201 by other ways, which will not be listed here one by one.

[0042] It should be noted that the dustproof member 10 covering the circuit board 201 can be understood as: the dustproof member 10 can be provided with a continuous or discontinuous covering area on the periphery of the circuit board 201 to resist dust.

[0043] It is worth mentioning that, depending on the selection of the dustproof part 10, the covering area can be breathable or airtight, and no specific limitation is made here.

[0044] It is worth noting that in order to allow air to flow through the circuit board 201 and dissipate heat from the circuit board 201, the covering area formed by the dustproof piece 10 can be provided with a ventilation part, and the ventilation part can be two or more ventilation holes, and the ventilation part can also be formed by a breathable material set on the dustproof piece 10 itself.

[0045] Of course, in order to allow air to flow through the circuit board 201 and dissipate heat from the circuit board 201, the dustproof member 10 may only cover a portion of the circuit board 201 so that the uncovered portion can be used for airflow. For example, the dustproof member 10 only covers one side of the circuit board 201 where electronic devices are provided, and the other side is uncovered and dissipated by wind.

[0046] In addition, there is a certain gap between the covering area formed by the dustproof member 10 and the circuit board 201 to prevent the dustproof member 10 from directly contacting the working surface of the circuit board 201 and causing poor heat dissipation effect.

[0047] The technical solution of the present invention adopts a dustproof piece 10 to be connected with the circuit board 201 , and the dustproof piece 10 covers the circuit board 201 , so that the dustproof piece 10 plays a role in preventing dust from reaching the circuit board 201 .

[0048] In one embodiment of the present invention, please refer to Figure 2 and Figure 3The circuit board 201 has a front side (not marked) and a back side (not marked) which are arranged opposite to each other, and the back side is used to connect with the machine body 200; the dustproof member 10 includes a top plate 11 and a side plate 12, the top plate 11 is located on one side of the front side of the circuit board 201 and is spaced apart from the circuit board 201, and the side plate 12 is connected to the top plate 11 and is arranged around the peripheral side of the circuit board 201. It can be understood that the top plate 11 and the side plate 12 are arranged around the side and the peripheral side of the circuit board 201 which are not facing the machine body 200, so as to form a dustproof covering area on the front and side of the circuit board 201, so that the airflow passing through the front and side of the circuit board 201 will not bring dust to the circuit board 201. The front side of the circuit board 201 can be understood as the side where the electronic components are arranged.

[0049] It should be noted that the side panel 12 may be in contact with the circuit board 201. Specifically, the side panel 12 may be in close contact with the periphery of the circuit board 201 so as to be connected with the dustproof part 10. The side panel 12 may also have no contact with the circuit board 201. Specifically, the side panel 12 may be spaced apart from the periphery of the circuit board 201. A connecting column or a connecting plate or other structure may be provided between the top panel 11 and the circuit board 201.

[0050] It is worth mentioning that the top plate 11 can be a flat plate, a curved plate or other regular or irregular plate shapes. In order to adapt to the shape of the circuit board 201 or to avoid electronic devices, the top plate 11 can be provided with grooves, vias or protrusions on the plate surface.

[0051] The shielding area formed by the side panel 12 can be configured to match the shape of the circuit board 201. For example, if the circuit board 201 is a rectangular plate, the side panel 12 can be configured to form a rectangular shielding area. The side panel 12 can also be different from the shape of the circuit board 201. For example, if the circuit board 201 is a rectangular plate, the side panel 12 can be configured to form a circular shielding area. The shielding area formed by the side panel 12 can be determined based on factors such as whether it is convenient for installation or ventilation, and is not specifically limited here.

[0052] For further information, please refer to Figure 3 The dustproof member 10 further includes a support portion 13, which is disposed on the surface of the top plate 11 facing the circuit board 201, and the support portion 13 extends toward the circuit board 201 and is disposed in contact with the circuit board 201. It can be understood that the support portion 13 can, on the one hand, enhance the anti-deformation capability of the dustproof member 10, and prevent the dustproof member 10 from deforming and affecting the dustproof effect, and on the other hand, when the top plate 11 and the circuit board 201 are connected by bolts or other components, the support portion 13 supports the top plate 11 and allows a gap between the top plate 11 and the circuit board 201, so that the top plate 11 and the circuit board 201 can be spaced apart.

[0053] It should be noted that the supporting portion 13 can adopt many specific structures, for example, please refer to Figure 2 and Figure 4 , a support bar 131 is provided on the surface of the top plate 11 facing the circuit board 201 to form a support portion 13, and the side of the support bar 131 away from the top plate 11 is in contact with the circuit board 201. It can be understood that the support bar 131 supports the top plate 11 by making linear contact with the circuit board 201. The support bar 131 can be a straight bar, a curved bar, or a ring-shaped bar, which is not specifically limited here. The number of support bars 131 can be one, two, or more than two, which is not specifically limited here. The support bar 131 can be spaced apart from the side plate 12 to form a receiving groove (not shown) together with the top plate 11 and the side plate 12, and the receiving groove is used to receive the wiring terminals on the circuit board 201.

[0054] For example, please refer to Figure 4 The surface of the top plate 11 facing the circuit board 201 is provided with a support column 132 to form a support portion 13, and the surface of the support column 132 facing away from the top plate 11 abuts against the circuit board 201. The number of the support column 132 can be one or more.

[0055] It is worth mentioning that please refer to Figure 5 The support column 132 may be provided with a mounting hole 19 along its axial direction, and a threaded hole 201a is provided at a position corresponding to the mounting hole 19 of the circuit board 201. The bolt passes through the mounting hole 19 and is threadedly engaged with the threaded hole 201a, so that the top plate 11 is connected to the circuit board 201. This arrangement allows the support portion 13 to serve as a connecting portion, simplifies the structure and facilitates processing.

[0056] In addition, the mounting hole 19 can be configured as a stepped hole with two sections with different inner diameters, with the section with a larger inner diameter being arranged away from the circuit board 201, and the section with a smaller inner diameter being arranged adjacent to the circuit board 201. This allows the head of the bolt to be received in the end with a larger inner diameter, thereby reducing the overall volume of the dustproof structure 100.

[0057] In combination with the above embodiments, it can be understood that, please refer to Figure 4 The support portion 13 can be configured as a support bar 131 and a support column 132 at the same time. Specifically, the support portion 13 includes a first support member (not marked) and a second support member (not marked). The surface of the top plate 11 facing the circuit board 201 is circumferentially provided with a support bar 131 to form a first support member, and support columns 132 are protrudingly provided on two opposite sides of the surface of the top plate 11 facing the circuit board 201 to form a second support member.

[0058] The simultaneous provision of the support bars 131 and the support columns 132 can provide better support for the top plate 11 . The support bars 131 can extend to form a larger support area, and the support columns 132 have a concentrated structure and a stronger local support effect. Thus, the support parts 13 of the two structures can complement each other.

[0059] It is worth mentioning that the support portion 13 may also be in other shapes and structures, such as a support needle plate, a flexible support pad, etc., which are not listed here one by one.

[0060] Considering that there may be some gaps between the side end of the side plate 12 away from the top plate 11 and the machine body 200, some dust will be carried by the airflow and adhere to the circuit board 201 through these gaps. Therefore, in order to further enhance the dustproof effect, in one embodiment of the present invention, please refer to Figure 1 and Figure 5 The side end of the side plate 12 away from the top plate 11 is provided with an annular bottom plate 14 extending toward the inner side of the side plate 12, and the annular bottom plate 14 is arranged to extend along the circumference of the side plate 12, and the annular bottom plate 14 is located on one side of the back of the circuit board 201. With such an arrangement, it is difficult for dust to pass through the gap and adhere to the circuit board 201.

[0061] It should be noted that the annular bottom plate 14 and the side plate 12 can be integrally formed, and both the annular bottom plate 14 and the side plate 12 are set to flexible materials, so as to cover the circuit board 201 and enable the annular bottom plate 14 to be located between the circuit board 201 and the machine body 200; the annular bottom plate 14 can also be detachably connected to the side plate 12, and the specific connection method can be bolt connection, clip connection, etc.

[0062] Since the board edge of the circuit board 201 is usually provided with a connection terminal for connecting the circuit, in order to avoid the circuit, in one embodiment of the present invention, please refer to Figure 6 The side plate 12 includes a fixed plate 121 and a rotating plate 122. One side end of the fixed plate 121 is fixedly connected to the top plate 11, and the other side end of the fixed top plate 11 is extended in a direction close to the circuit board 201. One side end of the rotating plate 122 is rotatably connected to the top plate 11, and the other end of the rotating plate 122 is extended in a direction away from the top plate 11. The end of the rotating plate 122 away from the top plate 11 is a free end.

[0063] It is understandable that the position of the rotating plate 122 corresponds to the wiring arrangement of the circuit board 201, that is, the rotating plate 122 is set at the position corresponding to the wiring terminal so as to be able to rotate to avoid the line connected to the wiring terminal. It should be noted that the wiring terminal can be understood as a structure such as a slot or a wiring port.

[0064] In addition, the number of rotating plates 122 may be one, two or more, and the number of fixed plates 121 may be the same as or different from the number of rotating plates 122, which is not specifically limited herein.

[0065] In order to prevent the heat dissipation airflow from being unable to blow to the entire surface of the circuit board 201 where the electronic components are arranged, in one embodiment of the present invention, please refer to Figure 7 The inner wall surface of the dustproof member 10 is concavely provided with an avoidance portion 15 corresponding to the position where the electronic components are arranged on the circuit board 201, and the inner wall surface of the dustproof member 10 is convexly provided with a guide portion 16 corresponding to the position where the electronic components are not arranged on the circuit board 201.

[0066] It can be understood that since the height of the position where electronic devices, terminal blocks and other structures are arranged on the circuit board 201 is greater than the height of the working surface where no electronic devices are arranged, the arrangement of the avoidance portion 15 and the guide portion 16 can make the distance between each part of the dustproof part 10 and the corresponding position of the circuit board 201 roughly equal, so that the heat dissipation airflow can flow through the entire surface of the circuit board 201 where the electronic devices are arranged via the avoidance portion 15 and the guide portion 16 to dissipate heat from various parts of the circuit board 201.

[0067] It is worth mentioning that the avoidance portion 15 can be a groove or a concave surface, and the guide portion 16 can be a convex plate or a convex block. The guide portion 16 set as a convex plate or a convex block can also be provided with a slope or streamlined arc surface and other structures for guiding the direction of the airflow, which will not be repeated here.

[0068] Considering that the guide portion 16 is set as a convex plate, the weight of the dustproof member 10 will be increased. In order to reduce the weight of the dustproof member 10, further, please refer to Figure 8 A weight-reducing groove 17 is formed on the surface of the dust-proof member 10 facing away from the circuit board 201 , and the weight-reducing groove 17 is aligned with the guide portion 16 .

[0069] The shape of the weight-reducing groove 17 can be matched with the shape of the convex plate, or the shape of the weight-reducing groove 17 can be different from the shape of the convex plate.

[0070] In addition, the connection direction of the connection terminals on the circuit board 201 may be arranged parallel to the circuit board 201, or the connection direction of the connection terminals on the circuit board 201 may be arranged perpendicular to the circuit board 201. In the embodiment in which the connection direction of the connection terminals on the circuit board 201 is arranged perpendicular to the circuit board 201, please refer to Figure 7 and Figure 8 The dustproof member 10 is provided with a clearance hole 18 in a direction close to or away from the circuit board 201 to expose the connection terminals on the circuit board 201 .

[0071] It should be noted that a covering plate (not shown) can be rotatably installed on the dustproof part 10. When the terminal block needs to be used, the covering plate can be rotated to open the clearance hole 18 to expose the terminal block; when the terminal block is not needed, the covering plate can be rotated to close the clearance hole 18 to prevent dust from entering.

[0072] It is worth mentioning that an elastic sealing gasket (not shown) may be provided around the edge of the clearance hole 18. When the cover plate rotates to close the clearance hole 18, the peripheral side of the cover plate abuts against the elastic sealing gasket, thereby enhancing the sealing performance.

[0073] In order to protect the circuit board 201 from damage and facilitate installation, in an embodiment of the present invention, the dustproof member 10 is made of elastic materials such as silicone and rubber.

[0074] Please refer to Figure 1 The present invention also proposes a cleaning robot 1000, which includes a machine body 200, a circuit board 201 and a dustproof structure 100. The specific structure of the dustproof structure 100 refers to the above embodiment. Since the cleaning robot 1000 adopts all the technical solutions of all the above embodiments, it at least has all the beneficial effects brought by the technical solutions of the above embodiments, which will not be described one by one here. Among them, the circuit board 201 is installed on the machine body 200, and the dustproof structure 100 is connected to the circuit board 201.

[0075] To facilitate the replacement of the dustproof member 10, preferably, the dustproof member 10 is detachably connected to the circuit board 201. The specific detachable connection method can be a socket connection, a screw connection, a latch connection, etc., which are not listed here one by one.

[0076] The above description is only a preferred embodiment of the present invention, and does not limit the patent scope of the present invention. All equivalent structural changes made by using the contents of the present invention specification and drawings under the concept of the present invention, or directly / indirectly applied in other related technical fields are included in the patent protection scope of the present invention.

Claims

1. A dustproof structure, applied to a cleaning robot, the cleaning robot comprising a machine body and a circuit board mounted on the machine body, characterized in that: The dustproof structure includes a dustproof member, the dustproof member is connected to the circuit board, the dustproof member can also cover the circuit board, the dustproof member is provided with a covering area on the periphery of the circuit board, and the covering area is provided with a ventilation part; The circuit board has a front side and a back side which are arranged opposite to each other, and the back side is used to be connected to the machine body; The dustproof member includes a top plate and a side plate, wherein the top plate is located at one side of the front face of the circuit board and is spaced apart from the circuit board, and the side plate is connected to the top plate and is arranged around the circumference of the circuit board; The side end of the side plate away from the top plate is provided with an annular bottom plate extending toward the inner side of the side plate, the annular bottom plate is extended along the circumference of the side plate, and the annular bottom plate is located on one side of the back side of the circuit board; The dustproof part also includes a supporting portion, which is arranged on a surface of the top plate facing the circuit board, extends toward the circuit board and is arranged in contact with the circuit board, and supports the top plate so that a gap exists between the top plate and the circuit board.

2. The dustproof structure according to claim 1, characterized in that: A support bar is provided on the surface of the top plate facing the circuit board to form the support portion, and a side of the support bar away from the top plate abuts against the circuit board.

3. The dustproof structure according to claim 2, characterized in that: The support bar is spaced apart from the side plate to form a receiving groove together with the top plate and the side plate, and the receiving groove is used to receive the connection terminals on the circuit board.

4. The dustproof structure according to claim 1, characterized in that: A support column is protruding from the surface of the top plate facing the circuit board to form the support portion, and a surface of the support column facing away from the top plate abuts against the circuit board.

5. The dustproof structure according to claim 1, characterized in that: The support portion includes a first support member and a second support member; a support strip is circumferentially arranged on the surface of the top plate facing the circuit board to form the first support member, and support columns are protruding on two opposite sides of the surface of the top plate facing the circuit board to form the second support member.

6. The dustproof structure according to claim 1, characterized in that: The side plate includes a fixed plate and a rotating plate, one side end of the fixed plate is fixedly connected to the top plate, and the other side end of the fixed plate is extended in a direction close to the circuit board, one side end of the rotating plate is rotatably connected to the top plate, and the other end of the rotating plate is extended in a direction away from the top plate.

7. The dustproof structure according to claim 1, characterized in that: The inner wall surface of the dustproof piece is concavely provided with an escape portion corresponding to the position of the circuit board where the electronic components are arranged, and the inner wall surface of the dustproof piece is convexly provided with a guide portion corresponding to the position of the circuit board where the electronic components are not arranged.

8. The dustproof structure according to claim 7, characterized in that: A weight-reducing groove is concavely arranged on a surface of the dust-proof part facing away from the circuit board, and the weight-reducing groove is aligned with the guide portion.

9. The dustproof structure according to any one of claims 1 to 8, characterized in that: The dustproof part is provided with a clearance hole along the direction approaching or away from the circuit board, so that the connection terminals on the circuit board are exposed.

10. The dustproof structure according to any one of claims 1 to 8, characterized in that: The dustproof part is made of elastic material.

11. A cleaning robot, characterized in that: It comprises a machine body, a circuit board and a dustproof structure as claimed in any one of claims 1 to 10, wherein the circuit board is installed on the machine body, and the dustproof structure is connected to the circuit board and covers the circuit board.

12. The cleaning robot according to claim 11, characterized in that: The dustproof piece of the dustproof structure is detachably connected to the circuit board.

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