Switching mechanism, housing, clutch, cleaning module and cleaning device

Abstract

The disclosure provides a switching mechanism, a shell, a clutch, a cleaning module and a cleaning equipment. The switching mechanism comprises a driving gear, a swing arm and a planetary gear. The driving gear is configured to be in transmission connection with an output end of a driving mechanism. The two ends of the swing arm are respectively in rotational connection with the driving gear and the planetary gear. The planetary gear is in meshing connection with the driving gear. One end of the switching mechanism away from an output shaft is provided with a rolling part arranged in rotation. The rolling part is in transmission connection with the driving gear. The rolling part is configured to roll on an auxiliary track of the shell in a switching direction during switching. When the switching mechanism is switched, i.e. when the position of the planetary gear is switched, the rolling part rolls on the auxiliary track of the shell under the action of the driving gear, so as to provide an auxiliary force for the position switching of the planetary gear. The switching force of the planetary gear is improved. The planetary gear is prevented from being stuck. The switching efficiency of the planetary gear is improved. The situation of switching failure is avoided.

Description

Technical Field

[0001] This disclosure relates to the technical field of cleaning equipment, and in particular to a switching mechanism, housing, clutch, cleaning module, and cleaning equipment. Background Technology

[0002] In the cleaning module of the cleaning equipment, the floor needs to be swept by rotation and lifted by lifting motion to avoid obstacles or special stains on the ground.

[0003] Early solutions used a dual-drive mechanism corresponding to two transmission chains. One drive mechanism drove the cleaning component to rotate through one transmission chain, while the other drive mechanism controlled the lifting and lowering of the cleaning component through the other transmission chain.

[0004] To optimize costs, the subsequent design was simplified to a single-drive mechanism with a clutch added to its output end. This clutch allows switching between two drive chains, meaning it can be connected to either the first or second drive chain. The clutch comprises a drive gear, planetary gears, and a rocker arm. The drive gear is fixed to the output end of the drive mechanism, with its axis coinciding with the output shaft. The rocker arm is rotatably connected to both the drive gear and the planetary gear at its two ends, maintaining meshing between the two gears, while the planetary gear axis remains in a non-fixed state.

[0005] Initially, the planetary gears mesh with the gears of the first transmission chain on the left. When the output shaft rotates counterclockwise, the driving gear rotates counterclockwise synchronously, driving the planetary gears to rotate clockwise. Since the axis of the planetary gears is not fixed, they will revolve clockwise around the driving gear (i.e., swing to the right), eventually meshing with the gears of the second transmission chain on the right to achieve the lifting function of the cleaning component. Conversely, the planetary gears swing to the right and re-mesh with the gears of the first transmission chain to achieve the cleaning function of the cleaning component.

[0006] However, the reliability of the clutch operation still has shortcomings. The planetary gears often jam when switching between the two transmission chains, resulting in low switching efficiency and even occasional switching failures, severely limiting the adaptability of the cleaning equipment. Therefore, it is urgent to improve the smoothness of clutch switching.

[0007] It should be noted that the information disclosed in the background section above is only used to enhance the understanding of the background of this disclosure and may contain content that does not constitute prior art. Utility Model Content

[0008] The purpose of this disclosure is to overcome at least one of the above-mentioned technical defects and to provide a switching mechanism, housing, clutch, cleaning module and cleaning equipment that increases the switching force of the planetary gears by providing switching assistance to the planetary gears, improves the switching smoothness of the planetary gears, avoids the problem of low switching efficiency and avoids the problem of switching failure.

[0009] The purpose of this disclosure is achieved through the following technical solution:

[0010] In a first aspect, this disclosure provides a switching mechanism, including a drive gear, a rocker arm, and a planetary gear. The drive gear is configured to be connected to the output end of a drive mechanism, and the two ends of the rocker arm are respectively rotatably connected to the drive gear and the planetary gear, with the planetary gear meshing with the drive gear.

[0011] The switching mechanism has a rotatable rolling part at one end away from the output end of the driving mechanism. The rolling part is connected to the drive gear and is configured to roll along the auxiliary track of the housing in the switching direction during switching.

[0012] In some implementations, the switching mechanism further includes a rolling wheel, which is connected to the planetary gear transmission, and the rolling part is fixedly disposed on the periphery of the rolling wheel.

[0013] In some implementations, at least one of the rolling part and the auxiliary track is provided with a rough layer, which is configured to increase the rolling friction between the rolling part and the auxiliary track.

[0014] In some implementations, the switching mechanism further includes a connecting shaft rotatably connected to one end of the swing arm, a planetary gear fixedly connected to the connecting shaft, and a rolling wheel fixedly connected to the connecting shaft.

[0015] In some implementations, the rolling part is the tooth tip of the planetary gear.

[0016] Secondly, this disclosure provides a housing configured to accommodate a switching mechanism, the housing having an auxiliary track configured to be tactically connected to the rolling part of the switching mechanism.

[0017] Thirdly, this disclosure provides a clutch, including the switching mechanism described in any of the above implementations and the housing described above, wherein the auxiliary track extends along the switching trajectory of the planetary gear, the rolling part is rotatably connected to the auxiliary track, and the rolling part rolls on the auxiliary track in the switching direction during switching.

[0018] In some implementations, the housing further includes a first limiting portion, which abuts against the swing arm when the swing arm is in a first extreme position; and / or,

[0019] The housing is also provided with a second limiting part, which abuts against the swing arm when the swing arm is in the second extreme position.

[0020] In some implementations, the auxiliary track is configured to separate from the rolling portion when the planetary gear engages with the first transmission chain; and / or,

[0021] The auxiliary track is configured to separate from the rolling portion when the planetary gear engages with the second transmission chain.

[0022] In some implementations, the housing is provided with an auxiliary groove, and the auxiliary track is disposed on the inner wall of the auxiliary groove.

[0023] Fourthly, this disclosure provides a cleaning module, including:

[0024] Drive mechanism;

[0025] First transmission chain;

[0026] Second transmission chain;

[0027] Cleaning components are respectively connected to the first transmission chain and the second transmission chain; and

[0028] In any of the above implementations of the clutch, the driving gear is connected to the output end of the drive mechanism, and the planetary gear is connected to the first transmission chain or the second transmission chain.

[0029] Fifthly, this disclosure provides a cleaning device, including a body and the aforementioned cleaning module, wherein the drive mechanism is mounted on the body.

[0030] Compared with the prior art, this application has at least the following advantages:

[0031] The aforementioned switching mechanism, clutch, cleaning module, and cleaning equipment all include a rolling part at the end of the switching mechanism opposite to the output end of the drive mechanism. This rolling part is connected to the drive gear, causing it to rotate as the drive gear rotates. When the switching mechanism switches positions, i.e., when the planetary gears switch positions, the rolling part rolls along the switching direction on the auxiliary track of the housing under the action of the drive gear. This provides auxiliary force for the planetary gears to switch positions, increasing the switching force of the planetary gears, preventing them from jamming, and thus improving the switching efficiency of the planetary gears and avoiding switching failures. Attached Figure Description

[0032] To more clearly illustrate the technical solutions of the embodiments of this disclosure, the accompanying drawings used in the embodiments will be briefly described below. It should be understood that the following drawings only show some embodiments of this disclosure and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0033] Figure 1 This is a schematic diagram of the switching mechanism according to an embodiment of the present disclosure;

[0034] Figure 2 for Figure 1 A cross-sectional view of the switching mechanism shown;

[0035] Figure 3 This is a schematic diagram of the structure of the cleaning module according to an embodiment of the present disclosure;

[0036] Figure 4 for Figure 3 A partial structural diagram of the cleaning module is shown;

[0037] Figure 5 for Figure 3 The diagram shows the structure of the cleaning module in another state;

[0038] Figure 6 for Figure 5 A partial structural diagram of the cleaning module is shown.

[0039] Reference numerals: 10, clutch; 10a, switching mechanism; 10b, housing; 20, drive mechanism; 30, first transmission chain; 40, second transmission chain; 100, drive gear; 200, swing arm; 300, planetary gear; 400, rolling part; 410, rough layer; 500, auxiliary track; 600, rolling wheel; 700, connecting shaft; 810, first limiting part; 820, second limiting part; 901, auxiliary groove. Detailed Implementation

[0040] To facilitate understanding of this disclosure, a more complete description will be provided below with reference to the accompanying drawings. Preferred embodiments of this disclosure are shown in the drawings. However, this disclosure can be implemented in many different forms and is not limited to the embodiments described herein. These embodiments are provided to provide the reader with a more thorough and complete understanding.

[0041] It should be noted that when an element is referred to as being "fixed to" another element, it can be directly attached to the other element or there may be an intervening element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or there may be an intervening element. The terms "vertical," "horizontal," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only possible implementation.

[0042] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this disclosure belongs. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of this disclosure. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0043] To better understand the technical solutions and beneficial effects of this disclosure, the following detailed description is provided in conjunction with specific embodiments:

[0044] like Figures 1 to 3 As shown, this disclosure provides a switching mechanism 10a, including a drive gear 100, a rocker arm 200, and a planetary gear 300. The drive gear 100 is configured to be driveably connected to the output end of a drive mechanism 20, causing the drive gear 100 to rotate under the drive of the drive mechanism 20. Both ends of the rocker arm 200 are rotatably connected to the drive gear 100 and the planetary gear 300, respectively, and the planetary gear 300 meshes with the drive gear 100. Preferably, both ends of the rocker arm 200 are rotatably connected to the drive gear 100 and the planetary gear 300, respectively.

[0045] It is understood that the drive mechanism 20 is a conventional drive source, which includes a motor. The drive mechanism 20 may also include a reduction gear connected to the motor, and the output end of the reduction gear is connected to the drive gear 100 for transmission. Alternatively, the drive mechanism 20 may omit the reduction gear, and the output end of the motor is directly connected to the drive gear 100 for transmission.

[0046] like Figure 2 and Figure 3 As shown, further, the end of the switching mechanism 10a opposite to the output end of the drive mechanism 20 is provided with a rotatable rolling part 400. The rolling part 400 is connected to the drive gear 100 for transmission, so that the rolling part 400 obtains rotational power. The rolling part 400 is configured to roll along the switching direction on the auxiliary track 500 of the housing 10b during switching, that is, the rolling part 400 is configured to roll and rub against the auxiliary track 500 of the housing 10b during switching. When the switching mechanism 10a switches, that is, when the planetary gear 300 switches positions, that is, when the swing arm 200 swings, the rolling part 400 rotates under the action of the drive gear 100, so that the rolling part 400 rolls on the auxiliary track 500 of the housing 10b, thereby providing auxiliary force for the switching of the planetary gear 300.

[0047] It is understandable that the rolling part 400 can be directly connected to the drive gear 100 for transmission, or it can be connected to the drive gear 100 for transmission through an intermediate element.

[0048] The aforementioned switching mechanism 10a has a rolling part 400 at one end opposite to the output end of the drive mechanism 20. The rolling part 400 is connected to the drive gear 100, causing it to rotate when the drive gear 100 rotates. When the switching mechanism 10a switches positions, i.e., when the planetary gear 300 switches positions, the rolling part 400 rolls along the switching direction on the auxiliary track 500 of the housing 10b under the action of the drive gear 100, providing auxiliary force for the position switching of the planetary gear 300. This improves the switching force of the planetary gear 300, prevents the planetary gear 300 from jamming, and thus improves the switching efficiency of the planetary gear 300, avoiding switching failure.

[0049] like Figure 2 As shown, in some embodiments, the switching mechanism 10a further includes a rolling wheel 600, which is drivenly connected to the planetary gear 300. A rolling part 400 is fixedly disposed on the periphery of the rolling wheel 600, so that the rolling part 400 is drivenly connected to the driving gear 100, which is achieved through the rolling wheel 600 and the planetary gear 300. In this embodiment, when the switching mechanism 10a switches positions, the driving gear 100 rotates, and the planetary gear 300 and the rolling wheel 600 rotate synchronously, so that the rolling part 400 on the rolling wheel 600 rolls along the auxiliary track 500 of the housing 10b, and the rolling direction is the same as the switching direction, so as to provide switching assistance to the planetary gear 300.

[0050] Preferably, the rolling part 400 and the rolling wheel 600 are integrally formed. Of course, in other embodiments, the rolling part 400 and the rolling wheel 600 can also be separately formed, that is, the rolling part 400 and the rolling wheel 600 are manufactured separately, and then the rolling part 400 and the rolling wheel 600 are assembled together.

[0051] like Figure 2 As shown, in some embodiments, at least one of the rolling part 400 and the auxiliary track 500 is provided with a roughening layer 410, which is configured to increase the rolling friction between the rolling part 400 and the auxiliary track 500. In this embodiment, by increasing the friction between the rolling part 400 and the auxiliary track 500 through the roughening layer 410, slippage of the rolling part 400 during switching is avoided, thereby improving the effect of the rolling part 400 in assisting the switching of the planetary gear 300.

[0052] like Figure 2 As shown, in some embodiments, a rough layer 410 is provided on the periphery of the rolling portion 400.

[0053] It is understood that the rough layer 410 is existing technology, and the rough layer 410 can be a recessed structure, a protruding structure, or other existing structures that increase roughness.

[0054] like Figure 2 As shown, in some embodiments, the switching mechanism 10a further includes a connecting shaft 700, which is rotatably connected to one end of the rocker arm 200. A planetary gear 300 is fixedly connected to the connecting shaft 700, allowing the planetary gear 300 to be rotatably connected to the rocker arm 200 via the connecting shaft 700. A rolling wheel 600 is fixedly connected to the connecting shaft 700, enabling the rolling part 400 to be driven by the driving gear 100, through the rolling wheel 600, the connecting shaft 700, and the planetary gear 300.

[0055] It is understandable that the planetary gear 300 is fixedly connected to the connecting shaft 700, which can be achieved through interference fit, flat section on the connecting shaft 700, keyway or other existing fixed structure.

[0056] Preferably, the connecting shaft 700, the rolling wheel 600, and the rolling part 400 are integrally formed. Of course, in other embodiments, the connecting shaft 700, the rolling wheel 600, and the rolling part 400 may also be manufactured separately.

[0057] like Figure 2 As shown, in another embodiment, the rolling part 400 is disposed on the periphery of the planetary gear 300, that is, the tooth tip of the planetary gear 300 is the rolling part 400. In this embodiment, when the planetary gear 300 changes position, the planetary gear 300 rolls synchronously on the auxiliary track 500 of the housing 10b to obtain the auxiliary force for changing the position of the planetary gear 300.

[0058] like Figure 3 As shown, this disclosure also provides a housing 10b configured to accommodate a switching mechanism 10a. The housing 10b is provided with an auxiliary track 500, which is configured to be rotatably connected to the rolling part 400 of the switching mechanism 10a.

[0059] The aforementioned housing 10b has a rolling part 400 at the end of the switching mechanism 10a opposite to the output end of the drive mechanism 20. The rolling part 400 is connected to the drive gear 100 for transmission, so that the rolling part 400 rotates when the drive gear 100 rotates. When the switching mechanism 10a switches, that is, when the planetary gear 300 switches positions, the rolling part 400 rolls along the switching direction on the auxiliary track 500 of the housing 10b under the action of the drive gear 100, so as to provide auxiliary force for the position switching of the planetary gear 300, improve the switching force of the planetary gear 300, avoid the planetary gear 300 from jamming, thereby improving the switching efficiency of the planetary gear 300 and avoiding the situation of switching failure.

[0060] like Figure 2As shown, in some embodiments, the rolling portion 400 includes a protruding structure. The auxiliary track 500 includes an elastic layer structure (not shown), which is configured to roll in contact with the protruding structure of the rolling portion 400. In this embodiment, because the protruding structure of the rolling portion 400 rolls in contact with the elastic layer structure, the rolling portion 400 can be embedded within the elastic layer structure during switching, increasing the rolling friction between the rolling portion 400 and the auxiliary track 500, thereby increasing the switching assistance force generated by the rolling portion 400 and further improving the switching smoothness.

[0061] It is understandable that when the protruding structure of the rolling part 400 rolls, it will embed itself inside the elastic layer structure. The mechanism of this process is the same as that of a car driving scenario: it is equivalent to increasing the grip by increasing the engagement depth between the tire and the contact surface, thereby effectively avoiding slippage and ultimately improving the car's passability.

[0062] like Figure 2 As shown, in some embodiments, when the rolling part 400 is fixedly disposed on the periphery of the rolling wheel 600, the protruding structure of the rolling part 400 is the rough layer 410 described above.

[0063] like Figure 2 As shown, in another embodiment, when the rolling part 400 is the tooth tip of the planetary gear 300, the protruding structure of the rolling part 400 is the tooth tip of the planetary gear 300.

[0064] like Figure 3 As shown, this disclosure also provides a clutch 10, including a switching mechanism 10a as described in any of the above embodiments and a housing 10b as described in any of the above embodiments. The housing 10b is provided with an auxiliary track 500, which extends along the switching trajectory of the planetary gear 300. The auxiliary track 500 is tactically connected to a rolling part 400, which rolls along the switching direction on the auxiliary track 500 during switching.

[0065] like Figure 3 As shown, in some embodiments, the housing 10b is further provided with a first limiting part 810, which abuts against the swing arm 200 when the swing arm 200 is in the first extreme position. In this embodiment, when the planetary gear 300 is connected to the first transmission chain 30, the swing arm 200 is in the first extreme position, and the first limiting part 810 abuts against the swing arm 200 to prevent the swing arm 200 from continuing to swing toward the first transmission chain 30. Since the swing arm 200 is rotatably connected to the planetary gear 300, the blocking effect of the first limiting part 810 on the swing arm 200 can curb the tendency of the planetary gear 300 to move toward the first transmission chain 30, reduce the pressure of the planetary gear 300 on the first transmission chain 30, reduce the stress on the clutch 10 and the first transmission chain 30, and help extend the service life of the cleaning module.

[0066] like Figure 4 As shown, in some embodiments, the auxiliary track 500 is configured to separate from the rolling part 400 when the planetary gear 300 engages with the first transmission chain 30, so as to prevent the rolling part 400 from still providing auxiliary force after the planetary gear 300 engages with the first transmission chain 30, further reducing the resistance of the planetary gear 300 to the first transmission chain 30, further reducing the stress on the clutch 10 and the first transmission chain 30, and further extending the service life of the cleaning module.

[0067] like Figure 5 As shown, in some embodiments, the housing 10b is further provided with a second limiting part 820, which abuts against the swing arm 200 when the swing arm 200 is in the second extreme position. In this embodiment, when the planetary gear 300 is connected to the second transmission chain 40, the second limiting part 820 abuts against the swing arm 200 to prevent the swing arm 200 from continuing to swing toward the second transmission chain 40. Since the swing arm 200 is rotatably connected to the planetary gear 300, the blocking effect of the second limiting part 820 on the swing arm 200 can curb the tendency of the planetary gear 300 to move toward the second transmission chain 40, reduce the pressure of the planetary gear 300 on the second transmission chain 40, reduce the stress on the clutch 10 and the second transmission chain 40, and help extend the service life of the cleaning module.

[0068] like Figure 6 As shown, in some embodiments, the auxiliary track 500 is configured to separate from the rolling part 400 when the planetary gear 300 engages with the second transmission chain 40, so as to prevent the rolling part 400 from still providing auxiliary force after the planetary gear 300 engages with the second transmission chain 40, further reducing the resistance of the planetary gear 300 to the second transmission chain 40, further reducing the stress on the clutch 10 and the second transmission chain 40, and extending the service life of the cleaning module.

[0069] like Figure 6 As shown, in some embodiments, the housing 10b is provided with an auxiliary groove 901, and an auxiliary track 500 is disposed on the inner wall of the auxiliary groove 901. Of course, in other embodiments, the auxiliary track 500 may also be a protruding structure protruding from the surface of the housing 10b.

[0070] like Figure 5As shown, this disclosure also provides a cleaning module, including the clutch 10, drive mechanism 20, first transmission chain 30, second transmission chain 40, and cleaning component as described in any of the above embodiments. The cleaning component is drivenly connected to both the first transmission chain 30 and the second transmission chain 40. The drive gear 100 is drivenly connected to the output end of the drive mechanism 20, and the planetary gear 300 is drivenly connected to either the first transmission chain 30 or the second transmission chain 40. It is understood that the cleaning component can be a side brush, a mop pad, a roller brush, a floor scrubbing roller, or other existing cleaning components.

[0071] like Figure 3 As shown, in some embodiments, the first transmission chain 30 is a transmission chain that drives the rotation of the cleaning component and performs cleaning, and the second transmission chain 40 is a transmission chain that drives the cleaning component to rise and fall. The working principle of the cleaning module is as follows:

[0072] like Figure 2 and Figure 3 As shown, when the planetary gear 300 is switched from the first transmission chain 30 to the second transmission chain 40, the output end of the drive mechanism 20 rotates clockwise, causing the drive gear 100 to rotate clockwise. The planetary gear 300, the rolling wheel 600, and the rolling part 400 rotate counterclockwise synchronously, and the planetary gear 300, the rolling wheel 600, and the rolling part 400 revolve counterclockwise around the drive gear 100 synchronously. The swing arm 200 swings to the right and separates from the first limiting part 810, thereby making the planetary gear 300 connected to the second transmission chain 40 on the right side, and the swing arm 200 abuts against the second limiting part 820. After the planetary gear 300 is connected to the second transmission chain 40 on the right side, the second transmission chain 40 inputs power, causing the cleaning module to rotate and clean the surface to be cleaned.

[0073] When the planetary gear 300 is switched from the second transmission chain 40 to the first transmission chain 30, the output end of the drive mechanism 20 rotates counterclockwise, causing the drive gear 100 to rotate counterclockwise. The planetary gear 300, the rolling wheel 600, and the rolling part 400 rotate clockwise synchronously, and the planetary gear 300, the rolling wheel 600, and the rolling part 400 revolve clockwise around the drive gear 100 synchronously. The swing arm 200 swings to the left and separates from the second limiting part 820, so that the planetary gear 300 is connected to the first transmission chain 30 on the left side, and the swing arm 200 abuts against the first limiting part 810. After the planetary gear 300 is connected to the first transmission chain 30 on the left side, the first transmission chain 30 inputs power, causing the cleaning module to rise and fall.

[0074] It should be noted that the second transmission chain 40 driving the cleaning module to rotate includes a reciprocating mechanism. When the planetary gear 300 rotates clockwise, the reciprocating mechanism drives the cleaning component to reciprocate in the lifting direction to achieve the lifting operation. It is understood that the reciprocating mechanism can be a bidirectional lead screw, a cam mechanism, or other existing reciprocating mechanisms. Since the reciprocating mechanism is prior art and not the focus of this disclosure, its specific structure will not be described in detail here.

[0075] It should be noted that the above-mentioned lifting and lowering refers to the direction away from or towards the surface to be cleaned. For example, when the cleaning module is used to clean the floor, the lifting and lowering is a vertical movement; when the cleaning module is used to clean the window, the lifting and lowering is a direction away from or towards the window, or a horizontal direction.

[0076] Due to the need for strength, the above descriptions of "clockwise direction" and "counterclockwise direction" are illustrative examples provided with reference to the accompanying drawings and do not represent the only possible implementation.

[0077] This disclosure also provides a cleaning device, including the aforementioned cleaning module and a body, with a drive mechanism 20 mounted on the body. It is understood that the cleaning device can be a robotic vacuum cleaner, a robotic mop, a combined vacuum and mop robot, a window cleaning robot, a floor scrubber, or other existing cleaning devices.

[0078] Compared with the prior art, this application has at least the following advantages:

[0079] The aforementioned switching mechanism 10a, clutch 10, cleaning module, and cleaning equipment all include a rolling part 400 at the end of the switching mechanism 10a opposite to the output end of the drive mechanism 20. The rolling part 400 is connected to the drive gear 100, causing it to rotate when the drive gear 100 rotates. When the switching mechanism 10a switches positions, i.e., when the planetary gear 300 switches positions, the rolling part 400 rolls along the switching direction on the auxiliary track 500 of the housing 10b under the action of the drive gear 100. This provides auxiliary force for the position switching of the planetary gear 300, increases the switching force of the planetary gear 300, prevents the planetary gear 300 from jamming, and thus improves the switching efficiency of the planetary gear 300, avoiding switching failures.

[0080] The embodiments described above are merely illustrative of several implementation methods of this application, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the disclosed patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these all fall within the protection scope of this application. Therefore, the protection scope of this patent application should be determined by the appended claims.

Claims

1. A switching mechanism, comprising a drive gear (100), a rocker arm (200), and a planetary gear (300), wherein the drive gear (100) is configured to be driveably connected to the output end of a drive mechanism (20), and both ends of the rocker arm (200) are rotatably connected to the drive gear (100) and the planetary gear (300), respectively, and the planetary gear (300) meshes with the drive gear (100); characterized in that, The switching mechanism has a rotatable rolling part (400) at one end away from the output end of the drive mechanism (20). The rolling part (400) is connected to the drive gear (100) for transmission. The rolling part (400) is configured to roll along the switching direction on the auxiliary track (500) of the housing (10b) during switching.

2. The switching mechanism according to claim 1, characterized in that, The switching mechanism further includes a rolling wheel (600), which is connected to the planetary gear (300) for transmission, and the rolling part (400) is fixedly disposed on the periphery of the rolling wheel (600).

3. The switching mechanism according to claim 2, characterized in that, At least one of the rolling part (400) and the auxiliary track (500) is provided with a rough layer (410), the rough layer (410) being configured to increase the rolling friction between the rolling part (400) and the auxiliary track (500).

4. The switching mechanism according to any one of claims 1 to 3, characterized in that, The switching mechanism further includes a connecting shaft (700), which is rotatably connected to one end of the swing arm (200), the planetary gear (300) is fixedly connected to the connecting shaft (700), and the rolling wheel (600) is fixedly connected to the connecting shaft (700).

5. The switching mechanism according to claim 1, characterized in that, The rolling part (400) is the tooth tip of the planetary gear (300).

6. A housing configured to accommodate a switching mechanism (10a), characterized in that, The housing is provided with an auxiliary track (500), which is configured to be tactically connected to the rolling part (400) of the switching mechanism (10a).

7. The housing according to claim 6, characterized in that, The auxiliary track (500) is provided with an elastic layer structure, which is configured to be rolledly connected to the rolling part (400) of the switching mechanism (10a).

8. A clutch, characterized in that, The device includes a switching mechanism (10a) as described in any one of claims 1 to 5, and a housing (10b) as described in claim 6 or 7, wherein the auxiliary track (500) extends along the switching trajectory of the planetary gear (300), the rolling part (400) is rotatably connected to the auxiliary track (500), and the rolling part (400) rolls on the auxiliary track (500) in the switching direction during switching.

9. The clutch according to claim 8, characterized in that, The housing (10b) is further provided with a first limiting part (810), which abuts against the swing arm (200) when the swing arm (200) is in the first extreme position; and / or, The housing (10b) is further provided with a second limiting part (820), which abuts against the swing arm (200) when the swing arm (200) is in the second extreme position.

10. The clutch according to claim 8, characterized in that, The auxiliary track (500) is configured to separate from the rolling portion (400) when the planetary gear (300) engages with the first transmission chain (30); and / or, The auxiliary track (500) is configured to separate from the rolling part (400) when the planetary gear (300) meshes with the second transmission chain (40).

11. The clutch according to any one of claims 8 to 10, characterized in that, The housing (10b) is provided with an auxiliary groove (901), and the auxiliary track (500) is provided on the inner wall of the auxiliary groove (901).

12. A cleaning module, characterized in that, include: Drive mechanism (20); First transmission chain (30); Second transmission chain (40); The cleaning component is connected to the first transmission chain (30) and the second transmission chain (40) respectively. as well as The clutch (10) according to claims 8 to 11, wherein the drive gear (100) is connected to the output end of the drive mechanism (20) and the planetary gear (300) is connected to the first transmission chain (30) or the second transmission chain (40).

13. A cleaning device, characterized in that, Includes a body and the cleaning module as described in claim 12, wherein the drive mechanism (20) is mounted on the body.

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