Transmission device, cleaning module, and cleaning device

Abstract

A transmission device (100), a cleaning module, and a cleaning device. The transmission device (100) is applied to a cleaning device, and the cleaning device comprises a device body and a side brush assembly. The transmission device (100) comprises: a swing arm (110), the swing arm (110) being rotatably connected to the device body, the side brush assembly being provided on the swing arm (110), and the swing arm (110) rotating relative to the device body so as to drive the side brush assembly to switch between a first operating position and a second operating position; and a first drive assembly (120), the first drive assembly (120) being connected to the side brush assembly and being configured to drive the side brush assembly to rotate by taking the central axis of the side brush assembly as a rotation shaft, wherein a rotation shaft of the first drive assembly (120) and a rotation shaft of the swing arm (110) are coaxially arranged.

Description

Transmission device, cleaning module and cleaning equipment

[0001] This application claims priority to Chinese Patent Application No. 202421858278.8, filed on August 1, 2024, entitled "Transmission Device, Cleaning Module and Cleaning Equipment", the entire contents of which are incorporated herein by reference. Technical Field

[0002] This application relates to the field of smart home technology, and in particular to a transmission device, a cleaning module, and a cleaning equipment. Background Technology

[0003] Currently, cleaning robots, such as robotic vacuum cleaners, typically use a brushing method to first suck up debris from the floor into their dustbin, thus completing the floor cleaning function. In order to clean areas beyond the main brush, robotic vacuum cleaners are usually equipped with side brush components to increase the cleaning range. However, the current side brush component transmission mechanism is simple in design and has a single function, only able to drive the side brush to rotate for cleaning. This results in the side brush being in a relatively fixed position, leading to a small cleaning range.

[0004] Application content

[0005] The content of this application introduces a series of simplified concepts, which will be further explained in detail in the detailed description section. This part of the application is not intended to limit the key features and essential technical features of the claimed technical solution, nor is it intended to determine the scope of protection of the claimed technical solution.

[0006] An embodiment of the first aspect of this application provides a transmission device applied to a cleaning device. The cleaning device includes a machine body and a side brush assembly. The transmission device includes: a swing arm rotatably connected to the machine body, the side brush assembly being disposed on the swing arm, the swing arm rotating relative to the machine body to drive the side brush assembly to switch between a first operating position and a second operating position; and a first drive assembly connected to the side brush assembly and configured to drive the side brush assembly to rotate about its own central axis; wherein the axis of rotation of the first drive assembly is coaxial with the axis of rotation of the swing arm.

[0007] Furthermore, the first drive assembly includes a first drive unit and a first transmission unit. The first drive unit is disposed inside the swing arm and fixedly disposed relative to the machine body. The rotation shaft of the first drive unit coincides with the rotation shaft of the swing arm. The first transmission unit is connected to the side brush assembly and at least a portion of it is disposed inside the swing arm. The first drive unit drives the side brush assembly to rotate through the first transmission unit.

[0008] Furthermore, the transmission device also includes: a fixed seat, a first clearance opening is provided on the periphery of the swing arm, the fixed seat passes through the first clearance opening, the fixed seat located outside the swing arm is configured to connect to the machine body, and the fixed seat located inside the swing arm is configured to connect to the first drive unit.

[0009] Furthermore, the swing arm includes a first half-shell and a second half-shell, which are connected to each other and enclose the first clearance opening.

[0010] Furthermore, the transmission device also includes a second drive assembly and an elastic element, the first end of which is connected to the swing arm, the second end of which is fixed relative to the machine body, and the second drive assembly is configured to cooperate with the elastic element to rotate the swing arm.

[0011] Furthermore, during the switching process between the first and second operating positions of the side brush assembly, the first drive assembly abuts against the swing arm to cause the swing arm to rotate.

[0012] Furthermore, the first end of the swing arm is connected to a first cam, and the second end of the swing arm is connected to a side brush assembly. During the switching process between the first operating position and the second operating position, the second drive assembly abuts against the protrusion of the first cam to rotate the swing arm. The first cam is coaxially arranged with the swing arm. The first end of the elastic element is connected to the first cam; and / or the first end of the elastic element is connected to the swing arm.

[0013] Furthermore, a first connecting portion is provided on the periphery of the first cam, and the first connecting portion is configured to connect with the first end of the elastic member; a guide groove is provided on the periphery of the first cam along the rotation direction of the first cam, and part of the elastic member is accommodated in the guide groove, and the guide groove is configured to limit the movement of the elastic member along the axial direction of the first cam.

[0014] Furthermore, the second drive assembly is configured to drive the first cam to rotate in a first direction to deform the elastic element and accumulate elastic potential energy so that the side brush assembly switches from the second operating position to the first operating position.

[0015] Furthermore, the elastic element releases its elastic potential energy to drive the first cam to rotate in the second direction, thereby switching the side brush assembly from the first operating position to the second operating position.

[0016] Furthermore, the second drive assembly includes a second drive unit and a second cam, the second cam abutting against the first cam, and the second drive unit is configured to drive the second cam to rotate, thereby causing the first cam to rotate.

[0017] Furthermore, when the side brush assembly is in the first operating position, the curve formed by the contact point of the first cam and the second cam and the rotation trajectory of the second cam coincides with the tangent point of the first cam.

[0018] Furthermore, the second cam includes a sector tooth portion and an abutment portion, the first driving portion meshes with the sector tooth portion, and the abutment portion abuts against the first cam.

[0019] Furthermore, the second drive unit includes a swing drive member and a first gear. The swing drive member is connected to the first gear, and the first gear meshes with a sector tooth. The swing drive member drives the abutment part to push the first cam to rotate through the first gear and the sector tooth, so as to drive the swing arm to rotate synchronously.

[0020] Furthermore, the transmission device also includes: a housing, which is fixedly connected to the machine body; a swing drive and a swing arm located outside the housing; a first gear, a second cam, and an elastic element located inside the housing; the first gear passes through the housing and is poweredly connected to the swing drive; and the second end of the elastic element is connected to the housing.

[0021] Furthermore, a limiting part is provided inside the housing, which is configured to limit the rotational position of the first cam; the limiting part includes a first limiting part and a second limiting part distributed on both sides of the protrusion of the first cam along the rotational direction of the first cam.

[0022] Furthermore, the transmission device also includes a position detection device configured to detect the rotational position of the swing arm, or the first cam, or the second cam, and the second drive assembly rotates or stops rotating according to the detection result of the position detection device.

[0023] Furthermore, the position detection device includes a first position switch and a second position switch distributed around the second cam. The second cam has a first action part and a second action part at both ends along the rotation direction. The first action part is adapted to trigger the first position switch to change the detection signal, and the second action part is adapted to trigger the second position switch to change the detection signal.

[0024] Furthermore, the elastic element is a tension spring, with its first end connected to the first cam and its second end fixed relative to the machine body; or the elastic element is a torsion spring, which is located at the shaft of the first cam, with its first end connected to the first cam and its second end fixed relative to the machine body; or the elastic element is an elastic sheet, with its first end connected to the first cam and its second end fixed relative to the machine body.

[0025] Furthermore, the transmission device also includes: a first anti-collision plate, which is connected to the side of the swing arm and is movable relative to the swing arm; and a collision detection switch, which is disposed on the swing arm, located on the side of the first anti-collision plate facing the inside of the swing arm, and configured to detect the rotational position of the first anti-collision plate.

[0026] Furthermore, the collision detection switch is provided with a reset element, or the swing arm is provided with a reset element; the reset element is configured to accumulate elastic potential energy as the first anti-collision plate moves toward the collision detection switch, and the reset element is configured to release the elastic potential energy to drive the first anti-collision plate to move away from the collision detection switch.

[0027] An embodiment of the second aspect of this application provides a cleaning module, including: a side brush assembly, and a transmission device according to any one of the first aspects.

[0028] An embodiment of the third aspect of this application provides a cleaning device, including: a machine body; and a cleaning module of the second aspect; wherein at least a portion of the side brush assembly in the first operating position is located inside the machine body in the horizontal direction, at least a portion of the side brush assembly in the second operating position is located outside the machine body in the horizontal direction, and the area of ​​the side brush assembly in the second operating position outside the horizontal direction of the machine body is greater than the area of ​​the side brush assembly in the first operating position outside the horizontal direction of the machine body.

[0029] Furthermore, the cleaning equipment also includes: a second anti-collision plate, which is connected to the side of the machine body and can move relative to the machine body, and a second clearance opening is provided on the second anti-collision plate; during the switching between the first operating position and the second operating position of the side brush assembly, at least the part of the swing arm connected to the first anti-collision plate passes through the second clearance opening; or, when the side brush assembly is in the first operating position, the first anti-collision plate is located at the second clearance opening.

[0030] The transmission device, cleaning module, and cleaning equipment provided in this application include a transmission device comprising a swing arm and a first drive assembly. By rotating the swing arm relative to the machine body, the side brush assembly mounted on the swing arm can switch between a first operating position and a second operating position, moving the side brush assembly to an operating position that meets the requirements of the corresponding cleaning range. This expands the cleaning range of the side brush assembly, thus improving the cleaning effect. The first drive assembly drives the side brush assembly to rotate around its own axis, allowing the rotating side brush assembly to act on the surface to be cleaned, achieving the cleaning function and ensuring a good cleaning effect. By coaxially arranging the rotation shaft of the first drive component with the rotation shaft of the swing arm, compared to the arrangement where the rotation shafts of the first drive component and the swing arm are spaced apart, the weight of the first drive component is located on one side of the swing arm's rotation shaft, making it inconvenient for the swing arm to rotate, the weight of the first drive component can be more evenly distributed around the swing arm, thereby improving the stability and flexibility of the swing arm during rotation. At the same time, this arrangement can make reasonable use of space, making the layout of the first drive component and the swing arm compact, which can meet the design requirements of compact structure and small size of the transmission device, and thus meet the design requirements of compact structure and small size of the cleaning equipment.

[0031] The above description is only an overview of the technical solution of this application. In order to better understand the technical means of this application and to implement it in accordance with the contents of the specification, and to make the above and other objects, features and advantages of this application more obvious and understandable, the following are specific embodiments of this application. Attached Figure Description

[0032] Various other advantages and benefits will become apparent to those skilled in the art upon reading the following detailed description of some embodiments. The accompanying drawings are for illustrative purposes only and are not intended to limit the scope of this application. Furthermore, the same reference numerals denote the same parts throughout the drawings. Wherein:

[0033] Figure 1 shows a structural schematic diagram of the transmission device provided in the embodiment of this application with the swing arm in the first operating position from one perspective.

[0034] Figure 2 shows a structural schematic diagram of the transmission device provided in the embodiment of this application with the swing arm in the first operating position from another perspective;

[0035] Figure 3 shows a partial structural schematic diagram of the transmission device provided in the embodiment of this application with the swing arm in the first operating position;

[0036] Figure 4 shows another partial structural diagram of the transmission device provided in the embodiment of this application with the swing arm in the first operating position;

[0037] Figure 5 shows another structural schematic diagram of the transmission device provided in the embodiment of this application with the swing arm in the first operating position;

[0038] Figure 6 shows a partial structural schematic diagram of the transmission device provided in the embodiment of this application with the swing arm in the second operating position from one perspective.

[0039] Figure 7 shows another partial structural diagram of the transmission device provided in the embodiment of this application with the swing arm in the second operating position;

[0040] Figure 8 shows another structural schematic diagram of the transmission device provided in the embodiment of this application with the swing arm in the second operating position;

[0041] Figure 9 shows another partial structural diagram of the transmission device provided in the embodiment of this application with the swing arm in the second operating position;

[0042] Figure 10 shows a cross-sectional view along the AA direction of the embodiment shown in Figure 9;

[0043] Figure 11 shows a partial structural schematic diagram of the transmission device provided in the embodiment of this application with the swing arm in the second operating position from another perspective;

[0044] Figure 12 shows a schematic diagram of the structure of the first driving component provided in an embodiment of this application.

[0045] The correspondence between the reference numerals and component names in Figures 1 to 12 is as follows: 100 Transmission device, 110 Swing arm, 111 First clearance opening, 112 First half-shell, 113 Second half-shell, 114 First cam, 1141 First connecting part, 1142 Guide groove, 1143 Protrusion, 120 First drive assembly, 121 First drive part, 122 First transmission part, 1221 First stage gear, 1222 Second stage gear, 1223 Third stage gear, 1224 Fourth stage gear, 123 First output end, 130 Fixed base, 131 Connecting base, 140 Second drive assembly, 141 Second drive part 1411 Oscillating drive component, 1412 First gear, 142 Second cam, 1421 Sector tooth, 1422 Abutting part, 1423 First actuating part, 1424 Second actuating part, 150 Elastic element, 160 Housing, 161 Third half-shell, 162 Fourth half-shell, 163 Second connecting part, 164 First limiting part, 165 Second limiting part, 170 First anti-collision plate, 180 Collision detection switch, 181 Reset component, 190 Position detection device, 191 First position switch, 192 Second position switch. Detailed Implementation

[0046] The following description provides numerous specific details to offer a more thorough understanding of the technical solutions provided in this application. However, it will be apparent to those skilled in the art that the technical solutions provided in this application can be implemented without one or more of these details.

[0047] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms “comprising” and / or “including” are used in this specification, they indicate the presence of the stated features, integrals, steps, operations, elements, and / or components, but do not exclude the presence or addition of one or more other features, integrals, steps, operations, elements, components, and / or combinations thereof.

[0048] Exemplary embodiments according to this application will now be described in more detail with reference to the accompanying drawings. However, these exemplary embodiments may be implemented in many different forms and should not be construed as being limited to the embodiments set forth herein. It should be understood that these embodiments are provided so that the disclosure of this application is thorough and complete, and that the concept of these exemplary embodiments is fully conveyed to those skilled in the art.

[0049] As shown in Figures 1 to 12, an embodiment of the first aspect of this application provides a transmission device 100, an embodiment of the second aspect of this application provides a cleaning module, and an embodiment of the third aspect of this application provides a cleaning device. The transmission device 100 is applied to the cleaning module, the cleaning module is applied to the cleaning device, and the cleaning device can be a sweeping robot, a sweeping and mopping robot, or other cleaning robots that meet the requirements.

[0050] Specifically, cleaning equipment includes, but is not limited to, a machine body, a cleaning system, and a drive system. These systems coordinate with each other to enable the cleaning equipment to move autonomously and perform its cleaning function. The functional components constituting these systems are integrated within the machine body. It is understood that the cleaning equipment can be a self-moving cleaning device, which is a device that automatically performs cleaning operations in a designated area without user intervention.

[0051] The main body of the machine includes a front part and a rear part, and has an approximately circular shape or other shapes, including but not limited to an approximately D-shaped shape with a front and rear circle, and a rectangular or square shape with a front and rear.

[0052] The cleaning system includes a dry cleaning system, in which the cleaning equipment can be a robot vacuum cleaner; or the cleaning system includes both wet and dry cleaning systems, in which the cleaning equipment can be a robot vacuum and mop combo.

[0053] Dry cleaning systems can include roller brushes, dustbins, and vacuum fans. The roller brushes, which have some contact with the ground, sweep up debris and carry it to the suction port between the roller brush and the dustbin. The suction fan then draws the debris into the dustbin with the powerful airflow generated by the dustbin.

[0054] Furthermore, the cleaning equipment provided in this application embodiment may also include a side brush assembly, which is rotatably connected to the machine body and is used to move debris and other foreign matter outside the roller brush area to the roller brush area of ​​the cleaning system.

[0055] Currently, the drive mechanism of the side brush assembly in cleaning equipment is simple in design and has a single function. It can only drive the side brush assembly to rotate for cleaning, resulting in a relatively fixed position of the side brush assembly and a small cleaning range. For example, the current side brush assembly is located below the machine body, with most of the side brush assembly located inside the machine body in the horizontal direction, and only a small portion located outside the machine body in the horizontal direction. Typically, only part of the bristles of the side brush assembly are located outside the machine body in the horizontal direction. Due to the limitations of the machine body, the current cleaning equipment cannot clean the corners and other areas to be cleaned, affecting the cleaning effect.

[0056] As shown in Figures 1, 2, 4, and 6, in view of the above, an embodiment of the first aspect of this application provides a transmission device 100 applied to a cleaning device. The cleaning device includes a machine body and a side brush assembly. The transmission device 100 includes: a swing arm 110 rotatably connected to the machine body, the side brush assembly being disposed on the swing arm 110, the swing arm 110 rotating relative to the machine body to drive the side brush assembly to switch between a first operating position and a second operating position; and a first drive assembly 120 connected to the side brush assembly for driving the side brush assembly to rotate about its own central axis; wherein the axis of rotation of the first drive assembly 120 is coaxially arranged with the axis of rotation of the swing arm 110.

[0057] The transmission device 100 provided in this embodiment includes a swing arm 110 and a first drive assembly 120. The swing arm 110 is rotatably connected to the machine body, and the side brush assembly is disposed on the swing arm 110. The rotation of the swing arm 110 relative to the machine body allows the side brush assembly to switch between a first operating position and a second operating position, moving the side brush assembly to an operating position that meets the requirements of the corresponding cleaning range. This expands the cleaning range of the side brush assembly, improving cleaning effectiveness and enhancing the user's cleaning experience. Simultaneously, the first drive assembly 120 drives the side brush assembly to rotate around its own axis, enabling the rotating side brush assembly to act on the surface to be cleaned, achieving the cleaning function and ensuring good cleaning results. Furthermore, in this embodiment, by coaxially arranging the rotation axis of the first drive component 120 with the rotation axis of the swing arm 110, compared to the arrangement where the rotation axis of the first drive component and the rotation axis of the swing arm are spaced apart, and the weight of the first drive component is located on one side of the swing arm's rotation axis, making it inconvenient for the swing arm to rotate, the transmission device 100 in this embodiment allows the weight of the first drive component 120 to be more evenly distributed around the swing arm 110. This improves the uniformity of the force exerted by the first drive component 120 on the swing arm 110 around the rotation axis of the swing arm 110, thereby improving the stability and flexibility of the swing arm 110 during rotation, improving the accuracy of the side brush component switching to the first operating position and the second operating position, and ensuring good cleaning effect. At the same time, this arrangement can make reasonable use of space, making the layout of the first drive component 120 and the swing arm 110 compact, which can meet the design requirements of the transmission device 100 to be compact and small in size, and thus meet the design requirements of the cleaning equipment to be compact and small in size.

[0058] The side brush assemblies in the first and second operating positions are located at different positions on the machine body in the horizontal direction. That is, the orthographic projections of the side brush assemblies in the first and second operating positions onto the machine body in the horizontal plane are at different locations within the orthographic projection area of ​​the machine body on the horizontal plane. Specifically, at least a portion of the side brush assembly in the first operating position is located inside the machine body in the horizontal direction, while at least a portion of the side brush assembly in the second operating position is located outside the machine body in the horizontal direction. The area of ​​the side brush assembly in the second operating position outside the horizontal direction of the machine body is larger than the area of ​​the side brush assembly in the first operating position outside the horizontal direction of the machine body.

[0059] In other words, the orthographic projection of the side brush assembly in the first operating position onto the horizontal plane can be entirely located within the orthographic projection area of ​​the machine body on the horizontal plane, or a portion of the orthographic projection of the side brush assembly in the first operating position onto the horizontal plane can be located within the orthographic projection area of ​​the machine body on the horizontal plane, while another portion is located outside the orthographic projection area of ​​the machine body on the horizontal plane. Similarly, the orthographic projection of the side brush assembly in the second operating position onto the horizontal plane can be entirely located outside the orthographic projection area of ​​the machine body on the horizontal plane, or a portion of the orthographic projection of the side brush assembly in the second operating position onto the horizontal plane can be located within the orthographic projection area of ​​the machine body on the horizontal plane, while another portion is located outside the orthographic projection area of ​​the machine body on the horizontal plane. Furthermore, the area of ​​the side brush assembly in the second operating position, projected onto the horizontal plane outside the area of ​​the machine body's horizontal projection, is larger than that of the side brush assembly in the first position. In other words, the area of ​​the side brush assembly in the second operating position outside the machine body is larger than that in the first operating position. This allows the side brush assembly in the second operating position to contact more of the surface to be cleaned outside the machine body, thereby increasing the cleaning range of the side brush assembly and enabling auxiliary cleaning of corner areas. Therefore, based on the cleaning range requirements of the cleaning equipment, specifically the cleaning range requirements of the side brush assembly, the swing arm 110 can be used to switch the side brush assembly between the first and second operating positions to move it to an operating position that meets the corresponding cleaning range requirements. That is, the side brush assembly can perform auxiliary cleaning operations in the first operating position or the second operating position to meet the needs of different cleaning ranges, expanding the auxiliary cleaning range, thus increasing the cleaning effect and improving the user's cleaning experience.

[0060] It should be noted that when the side brush assembly in the first operating position is entirely located within the machine body in the horizontal direction, the area of ​​the side brush assembly in the first operating position outside the horizontal direction of the machine body is zero. At this time, the area of ​​the side brush assembly in the second operating position outside the horizontal direction of the machine body is still greater than the area of ​​the side brush assembly in the first operating position outside the horizontal direction of the machine body.

[0061] In this design, at least a portion of the side brush assembly in the second operating position is located outside the machine body in the horizontal direction, and the area of ​​the side brush assembly in the second operating position outside the horizontal direction of the machine body is larger than the area of ​​the side brush assembly in the first operating position outside the horizontal direction of the machine body. This allows the cleaning range of the side brush assembly in the second operating position to extend beyond the edge of the machine body's travel range, and compared to the side brush assembly in the first operating position, the area exposed outside the machine body is larger. This enables comprehensive cleaning of corners and edges that the machine body cannot reach, thereby increasing the cleaning range of the side brush assembly and improving the cleaning effect of the cleaning equipment.

[0062] Specifically, when the side brush assembly is in the first operating position, horizontally, the side brush assembly can be entirely located inside the machine body, or most of the side brush assembly can be located inside the machine body with a small portion located outside. In this case, the side brush assembly can be understood as retracted into the machine body, and regular cleaning operations can be performed using the side brush assembly. When the side brush assembly is in the second operating position, horizontally, the side brush assembly can be entirely located outside the machine body, or most of the side brush assembly can be located outside the machine body with a small portion located inside. In this case, the side brush assembly can be understood as extending outside the machine body, and corner cleaning operations can be performed using the side brush assembly.

[0063] Furthermore, depending on whether the cleaning equipment needs to perform corner cleaning, the side brush assembly can be selectively driven to switch between a first operating position and a second operating position. For example, the side brush assembly can be moved to the first operating position for regular cleaning operations, and moved to the second operating position for corner cleaning operations, thereby meeting different functional requirements of the cleaning equipment and improving the intelligence of the automatic cleaning equipment.

[0064] As shown in Figures 5, 7, 8, and 11, in some possible embodiments provided in this application, the first drive assembly 120 includes a first drive part 121 and a first transmission part 122. The first drive part 121 is disposed inside the swing arm 110 and fixedly disposed relative to the machine body. The rotation axis of the first drive part 121 coincides with the rotation axis of the swing arm 110. The first transmission part 122 is connected to the side brush assembly. At least a portion of the first transmission part 122 is disposed inside the swing arm 110. The first drive part 121 drives the side brush assembly to rotate through the first transmission part 122.

[0065] In this embodiment, the first drive unit 121 is fixedly disposed relative to the machine body, and the rotation axis of the first drive unit 121 coincides with the rotation axis of the swing arm 110. The first transmission unit 122 is connected to the first drive unit 121 and located inside the swing arm 110. Therefore, the machine body bears the weight of the first drive unit 121 and the first transmission unit 122. Compared to directly mounting the first drive assembly on the swing arm and having the swing arm bear the weight of the first drive unit and the first transmission unit, this reduces the force on the swing arm 110, thereby improving the flexibility and stability of the swing arm 110's rotation. Simultaneously, the fixed disposal of the first drive unit 121 relative to the machine body allows it to be considered a fixed component relative to the machine body. Compared to the first drive unit being mounted on the swing arm, which rotates relative to the machine body, and thus a moving component relative to the machine body, this facilitates the arrangement of the connecting lines of the first drive unit 121 and improves the reliability of the connection between the first drive unit 121 and the connecting lines. Meanwhile, since the first drive unit 121 and at least a portion of the first transmission unit 122 are housed within the swing arm 110, the swing arm 110 provides excellent protection for the first drive unit 121 and at least a portion of the first transmission unit 122, which helps extend the service life of the first drive unit 121 and at least a portion of the first transmission unit 122, and improves the reliability of the transmission device 100. Furthermore, this arrangement makes full use of the internal space of the swing arm 110, resulting in a compact layout and smaller size for the swing arm 110, the first drive unit 121, and the first transmission unit 122, thus meeting design requirements.

[0066] Specifically, the first drive unit 121 can be a motor. The first drive unit 121 is fixedly installed relative to the machine body. It can be directly connected to the machine body, or it can be indirectly connected to the machine body through other components to achieve a relatively fixed installation. The connecting wires of the first drive unit 121 can be understood as electrical connection wires, etc. The first transmission unit 122 can be at least one of gear transmission, belt transmission, and chain transmission.

[0067] It is understood that at least a portion of the first transmission part 122 is located within the swing arm 110. This could mean that a part of the first transmission part 122 is located within the swing arm 110, while another part is located outside the swing arm 110, as shown in Figure 2. For example, the first transmission part 122 may also include a first output end 123, which passes through the swing arm 110 and is located outside the swing arm 110 to connect with the side brush assembly. Alternatively, the first transmission part 122 may be entirely located within the swing arm 110, and the swing arm 110 may have a through hole corresponding to the first output end 123 of the first transmission part 122. The side brush assembly connects to the first output end 123 within the swing arm 110 through the through hole.

[0068] Specifically, as shown in Figure 12, the first drive unit 121 is a motor, and the first transmission unit 122 is a gear transmission. Taking this as an example, the first transmission unit 122 includes a first-stage gear 1221, a second-stage gear 1222, a third-stage gear 1223, and a fourth-stage gear 1224. The first-stage gear 1221 is connected to the output shaft of the motor. The second-stage gear 1222 meshes with the first-stage gear 1221 and the third-stage gear 1223. The fourth-stage gear 1224 meshes with the third-stage gear 1223 and is provided with a first output end 123. Therefore, when the motor rotates, the first-stage gear 1221, the second-stage gear 1222, the third-stage gear 1223, and the fourth-stage gear 1224 drive the side brush assembly connected to the first output end 123 to rotate around its own central axis.

[0069] As shown in Figures 3, 5, 7, and 11, in some possible embodiments provided in this application, the transmission device 100 further includes: a fixed seat 130, a first clearance opening 111 is provided on the periphery of the swing arm 110, the fixed seat 130 passes through the first clearance opening 111, the fixed seat 130 located outside the swing arm 110 is used to connect to the machine body, and the fixed seat 130 located inside the swing arm 110 is used to connect to the first drive unit 121.

[0070] In this embodiment, a first clearance opening 111 is provided on the periphery of the swing arm 110, one end of the fixed seat 130 is used to connect with the machine body, and the other end of the fixed seat 130 passes through the first clearance opening 111 to extend into the swing arm 110. The first drive unit 121 is installed and connected to the fixed seat 130 inside the swing arm 110, thereby achieving a relatively fixed arrangement between the first drive unit 121 and the machine body.

[0071] As shown in Figures 1, 2, 7, and 11, in some possible embodiments provided in this application, the swing arm 110 includes a first half-shell 112 and a second half-shell 113, which are connected to each other and enclose the first clearance opening 111. This facilitates the installation and disassembly of the first drive unit 121, the first transmission unit 122, and the fixed base 130 located within the swing arm 110, thereby improving assembly and maintenance efficiency.

[0072] The first half-shell 112 and the second half-shell 113 can be detachably connected via at least one of the following structures: bolt structure, snap-fit ​​structure, plug-in structure, tenon and mortise structure, and magnetic attraction structure. Furthermore, the first half-shell 112 is located at the bottom of the second half-shell 113. It is understood that the first half-shell 112 and the second half-shell 113 together form a connected first mounting space and a second mounting space. The first drive unit 121 is located within the first mounting space. A first clearance opening 111 is formed between the first half-shell 112 and the second half-shell 113 in the first mounting space. The first transmission unit 122 is located within the second mounting space. The first half-shell 112 in the second mounting space may be provided with a through hole for connection to the side brush assembly.

[0073] Furthermore, the transmission device 100 may also include a connecting seat 131, which is located below the swing arm 110, that is, below the first half-shell 112. The connecting seat 131 is connected to the fixed seat 130 and / or the first drive unit 121. A rotating member is provided between the connecting seat 131 and the first half-shell 112 to ensure that the first half-shell 112 can rotate relative to the fixed seat 130, thereby enabling the swing arm 110 to rotate relative to the first drive unit 121. Specifically, the rotating member may be a rotary bearing or the like.

[0074] As shown in Figures 4, 9, 10 and 11, in some possible embodiments provided in this application, the transmission device 100 further includes: a second drive assembly 140 and an elastic element 150. The first end of the elastic element 150 is connected to the swing arm 110, and the second end of the elastic element 150 is fixed relative to the machine body. The second drive assembly 140 is used to cooperate with the elastic element 150 to make the swing arm 110 rotate.

[0075] Therefore, according to the cleaning range requirements of the cleaning equipment, the second drive component 140 and the elastic element 150 are used to drive the swing arm 110 to rotate relative to the machine body, so that the side brush component can switch between the first operating position and the second operating position, so as to move the side brush component to the operating position that meets the corresponding cleaning range requirements, thereby meeting the needs of different mopping ranges, expanding the mopping range, improving the cleaning effect, and enhancing the user's cleaning experience.

[0076] It should be noted that the first end of the elastic element 150 is connected to the swing arm 110, including direct connection between the first end of the elastic element 150 and the swing arm 110 and indirect connection through other components. Both direct and indirect connection between the first end of the elastic element 150 and the swing arm 110 are within the protection scope of this disclosure.

[0077] Specifically, the second drive assembly 140 drives the side brush assembly to the first operating position via the swing arm 110. At this time, the force applied by the second drive assembly 140 to the swing arm 110 is opposite to the force applied by the elastic member 150 to the swing arm 110. Thus, the two opposite forces fix the swing arm 110, preventing the swing arm 110 from swinging and thus preventing the side brush assembly from moving with the swing arm 110 during the cleaning process.

[0078] It is understandable that the elastic element 150 drives the side brush assembly to the second operating position through the swing arm 110. At this time, the elastic element 150 can drive the swing arm 110 to the extreme position and fix the swing arm 110 by its own elastic force.

[0079] When the side brush assembly is in the first operating position or the second operating position, the elastic element 150 can be in a deformed state to maintain the force applied to the swing arm 110.

[0080] As shown in Figures 3, 4, 5, 6, and 7, in some possible embodiments provided in this application, during the switching process of the side brush assembly between the first operating position and the second operating position, the first drive assembly 120 abuts against the swing arm 110 to cause the swing arm 110 to rotate. This ensures that the first drive assembly 120 drives the swing arm 110 to rotate stably, thereby ensuring that the side brush assembly can stably switch between the first operating position and the second operating position.

[0081] The first drive component 120 can directly abut against the swing arm 110, thereby directly driving the swing arm 110 to rotate by rotating the first drive component 120.

[0082] Alternatively, the first drive assembly 120 may include a cam or other eccentric rotation mechanism that abuts against the outer wall of the swing arm 110. By driving the cam or other eccentric rotation mechanism to rotate, the swing arm 110 is directly driven to rotate.

[0083] As shown in Figures 2, 3, 4, 5, 6, and 11, in some possible embodiments provided in this application, the first end of the swing arm 110 is connected to the first cam 114, and the second end of the swing arm 110 is connected to the side brush assembly. During the switching process between the first operating position and the second operating position of the side brush assembly, the second drive assembly 140 abuts against the protrusion 1143 of the first cam 114 to make the swing arm 110 rotate.

[0084] In this embodiment, the protrusion 1143 of the first cam 114 can be understood as the radially outward protruding portion of the first cam 114. The first end of the swing arm 110 and the first cam 114 are relatively fixedly arranged. The second drive assembly 140 abuts against the protrusion 1143 of the first cam 114, thereby achieving the abutment between the second drive assembly 140 and the swing arm 110. As a result, the second drive assembly 140 rotates, which in turn drives the swing arm 110 to rotate via the first cam 114. This, in turn, drives the side brush assembly connected to the second end of the swing arm 110 to switch between the first operating position and the second operating position, ensuring the reliability and stability of the rotation of the swing arm 110.

[0085] Furthermore, the first cam 114 and the rocker arm 110 are coaxially arranged, such as the first cam 114 being connected to the first end of the rocker arm 110, so that the rocker arm 110 can rotate synchronously with the first cam 114, thereby improving the rotational accuracy of the rocker arm 110. In addition, this arrangement makes the first cam 114 and the rocker arm 110 compact and small in size, which can meet the design requirements of the transmission device 100 for a compact structure and small size.

[0086] The first end of the elastic element 150 can be connected to the first cam 114; or, the first end of the elastic element 150 can also be connected to the swing arm 110; or, the first end of the elastic element 150 can be connected to both the first cam 114 and the swing arm 110. The second end of the elastic element 150 can be indirectly or directly fixedly connected to the machine body, that is, the second end of the elastic element 150 is kept relatively stationary with respect to the machine body.

[0087] In some possible embodiments provided in this application, the elastic element 150 can be a tension spring, with the first end of the tension spring connected to the first connecting portion 1141 of the first cam 114 and the second end of the tension spring fixed relative to the machine body. Thus, an elastic force can be stably provided, enabling the side brush assembly to switch from the first operating position to the second operating position.

[0088] Alternatively, the elastic element 150 can be a torsion spring, which is located at the pivot of the first cam 114. The torsion spring can be coaxially mounted with the pivot of the first cam 114; that is, the torsion spring can be sleeved on the outer periphery of the pivot of the first cam 114, with one end connected to the first cam 114 and the other end fixed relative to the machine body. This provides a stable elastic force, allowing the side brush assembly to switch from the first operating position to the second operating position.

[0089] Alternatively, the elastic element 150 can be an elastic sheet, with its first end connected to the first cam 114 and its second end fixed relative to the machine body. Thus, the elastic element 150 can stably drive the side brush assembly from the first operating position to the second operating position through the elastic force generated by its deformation.

[0090] It is understandable that the elastic element 150 can also be an elastic component other than a tension spring, torsion spring, and elastic sheet.

[0091] As shown in Figures 3, 4, 5, 6, 7, and 8, in some possible embodiments provided in this application, a first connecting portion 1141 is provided on the periphery of the first cam 114. The first connecting portion 1141 is used to connect with the first end of the elastic member 150. That is, the first end of the elastic member 150 is connected to the first cam 114.

[0092] Further, as shown in Figure 8, a guide groove 1142 is provided on the periphery of the first cam 114 along the rotation direction of the first cam 114. A portion of the elastic element 150 is accommodated in the guide groove 1142. The guide groove 1142 is used to limit the axial movement of the elastic element 150 along the first cam 114. The provision of the guide groove 1142 can improve the reliability and stability of the connection between the first end of the elastic element 150 and the first connecting part 1141, and can limit the direction of the elastic deformation of the elastic element 150, thereby improving the utilization rate of the elastic potential energy of the elastic element 150. This allows the first cam 114 to rotate reliably with the cooperation of the second drive assembly 140 and the elastic element 150, ensuring that the side brush assembly can accurately switch between the first operating position and the second operating position.

[0093] As shown in Figures 4 and 6, in some possible embodiments provided in this application, the second drive assembly 140 drives the first cam 114 to rotate in a first direction, causing the elastic element 150 to deform and accumulate elastic potential energy, thereby switching the side brush assembly from a second operating position to a first operating position. The elastic element 150 releases its elastic potential energy to drive the first cam 114 to rotate in a second direction, thereby switching the side brush assembly from the first operating position to the second operating position.

[0094] The first direction and the second direction are two opposite directions. For example, the first direction is the Y direction shown in Figures 4 and 6, and the second direction is the X direction shown in Figures 4 and 6.

[0095] As shown in Figure 6, when the side brush assembly is in the second operating position, the elastic element 150 is in a stretched state. At this time, the first drive assembly 120 can rotate in one direction to drive the first cam 114 to rotate in the first direction, which is indicated by arrow Y in Figure 6, i.e., clockwise rotation, so that the swing arm 110 rotates synchronously in the first direction, causing the side brush assembly to switch from the second operating position to the first operating position. When the side brush assembly is in the first operating position, the elastic element 150 can also be in a stretched state, thereby locking the swing arm 110 through elastic force.

[0096] Specifically, during the process of the side brush assembly switching from the second operating position to the first operating position, the second drive assembly 140 drives the elastic element 150 to deform through the first cam 114 in order to accumulate elastic potential energy.

[0097] As shown in Figure 4, when the side brush assembly is in the first operating position, the first drive assembly 120 rotates in another direction. At this time, the elastic element 150 releases elastic potential energy and pushes the first cam 114 to rotate in the second direction, which is the X direction shown in Figure 4. That is, the first cam 114 rotates in the counterclockwise direction shown in Figure 4, so that the swing arm 110 rotates synchronously in the second direction, so that the side brush assembly switches from the first operating position to the second operating position.

[0098] As shown in Figures 8, 9, and 11, in some possible embodiments provided in this application, the second drive assembly 140 includes a second drive part 141 and a second cam 142. The second cam 142 abuts against the first cam 114. The second drive part 141 is used to drive the second cam 142 to rotate, thereby driving the first cam 114 to rotate, thus realizing the transmission connection between the second drive assembly 140 and the first cam 114.

[0099] The second drive unit 141 is used to output power, thereby driving the second cam 142 to rotate, so as to drive the first cam 114 that abuts against the second cam 142 to rotate, thereby realizing the rotation of the swing arm 110.

[0100] Specifically, the second drive unit 141 includes a second output end, and the second cam 142 can be directly disposed on the second output end of the second drive unit 141 so that the second drive unit 141 directly drives the second cam 142 to rotate. Alternatively, the second output end of the second drive unit 141 can also be connected to the second cam 142 for transmission, which can also drive the second cam 142 to rotate.

[0101] As shown in Figures 4, 6, and 9, in the above embodiment, the second cam 142 includes a sector tooth portion 1421 and an abutment portion 1422. The first driving portion 121 meshes with the sector tooth portion 1421, and the abutment portion 1422 abuts against the first cam 114.

[0102] The abutting portion 1422 of the second cam 142 can be understood as the portion of the second cam 142 that extends radially outward. The abutting portion 1422 of the second cam 142 abuts against the protrusion 1143 of the first cam 114 to achieve power transmission.

[0103] In this embodiment, the sector teeth 1421 and the abutment portion 1422 are spaced apart and distributed around the circumference of the rotating shaft of the second cam 142, so that when the second cam 142 rotates, it can simultaneously drive the sector teeth 1421 and the abutment portion 1422 to rotate. Thus, when the first drive unit 121 operates, it can drive the second cam 142 to rotate through the meshing sector teeth 1421, causing the abutment portion 1422 to rotate synchronously, thereby driving the rocker arm 110 to rotate through the first cam 114.

[0104] As shown in Figures 8, 9, and 11, in some possible embodiments provided in this application, the second drive unit 141 includes a swing drive member 1411 and a first gear 1412. The swing drive member 1411 is connected to the first gear 1412, and the first gear 1412 meshes with the sector tooth portion 1421. Thus, the swing drive member 1411 works, and through the meshing of the first gear 1412 and the sector tooth portion 1421, it can drive the second cam 142 to rotate, so that the abutment portion 1422 on the second cam 142 pushes the first cam 114 to rotate. The swing arm 110 rotates synchronously to drive the side brush assembly to switch between the first operating position and the second operating position.

[0105] The swing drive 1411 is used to output power. The swing drive 1411 can be a motor. The first gear 1412 is coaxially arranged with the second output end of the swing drive 1411 and meshes with the sector tooth 1421, thereby causing the swing drive 1411 to drive the first gear 1412, the second cam 142 and the first cam 114 to rotate, thereby driving the swing arm 110 to rotate synchronously.

[0106] As shown in Figure 6, when the side brush assembly moves from the second operating position to the first operating position, that is, when the side brush assembly moves towards retracting out of the machine body, the swing drive 1411 rotates and drives the second cam 142 to rotate through the first gear 1412 and the sector tooth 1421. The abutment part 1422 pushes the protrusion 1143 of the first cam 114 to rotate the first cam 114 in the Y direction. Since the first cam 114 is coaxially arranged with the swing arm 110, the swing arm 110 can rotate synchronously with the first cam 114, thereby driving the side brush assembly installed in the swing arm 110 to move from the second operating position to the first operating position.

[0107] As shown in Figure 4, when the side brush assembly moves from the first operating position to the second operating position, that is, when the side brush assembly moves outward from the machine body, the rotation direction of the abutment part 1422 is opposite to the rotation direction of the abutment part 1422 during the movement of the side brush assembly towards the retraction of the machine body. That is, in the direction of movement, the abutment part 1422 is located in front of the first cam 114. Therefore, the abutment part 1422 does not exert a pushing force on the first cam 114. The abutment part 1422 provides space for the elastic element 150 to release elastic potential energy. Thus, under the action of the elastic element 150, the first cam 114 will rotate in the opposite direction to the movement of the side brush assembly towards the retraction of the machine body. That is, the first cam 114 will rotate in the direction shown in X. Since the first cam 114 is coaxially arranged with the swing arm 110, the swing arm 110 can rotate synchronously with the first cam 114, thereby driving the side brush assembly installed in the swing arm 110 to move from the first operating position to the second operating position.

[0108] As shown in Figure 4, in some possible embodiments provided in this application, when the side brush assembly is in the first operating position, the curve formed by the contact point of the first cam 114 and the second cam 142 and the rotation trajectory of the second cam 142 coincides with the tangent point of the first cam 114.

[0109] The rotation trajectory of the second cam 142 can be understood as an arc with the axis of rotation of the second cam 142 as the center and the radius of the second cam 142 as the radius. According to the principle that the direction of the supporting force on an object on an arc track is towards the center of the circle, the force exerted on the second cam 142 by the point of application on the rotation trajectory of the second cam 142 passes through the axis of rotation of the second cam 142. Therefore, when the side brush assembly is in the first operating position, the curve formed by the contact point of the first cam 114 and the second cam 142 and the rotation trajectory of the second cam 142 coincides with the tangent point of the first cam 114. This causes the force exerted by the first cam 114 on the second cam 142 to pass through the rotation axis of the second cam 142. Thus, when the side brush assembly is in the first operating position, a self-locking constraint is formed on the first cam 114. That is, the first cam 114 will not rotate relative to the second cam 142 under the action of external force or user pulling. Therefore, it is ensured that the swing arm 110 can reliably and stably maintain the current position, that is, it is ensured that the side brush assembly can reliably and stably maintain the first operating position, avoiding the side brush assembly from extending outside the machine body, which would affect the aesthetics of the equipment, increase the volume occupied by the equipment, and cause inconvenience in storage.

[0110] As shown in Figures 1 and 2, in some possible embodiments provided in this application, the transmission device 100 further includes: a housing 160, which is fixedly connected to the machine body; a swing drive 1411 and a swing arm 110 located outside the housing 160; a first gear 1412, a second cam 142, a first cam 114, and an elastic element 150 located inside the housing 160; the first gear 1412 passes through the housing 160 and is poweredly connected to the swing drive 1411; and the second end of the elastic element 150 is connected to the housing 160.

[0111] In this embodiment, the housing 160 is fixedly connected to the machine body, allowing the entire transmission device 100 to be connected to the machine body for convenient operation. The housing 160 provides excellent protection for the first gear 1412, second cam 142, first cam 114, and elastic element 150 located within it, thus extending their service life.

[0112] Specifically, as shown in Figure 4, a second connecting part 163 is provided inside the housing 160, and the second end of the elastic member 150 is connected to the second connecting part 163 to achieve a relatively fixed connection between the second end of the elastic member 150 and the machine body.

[0113] The housing 160 can be detachably connected to the machine body through at least one of the following structures: bolt structure, snap-fit ​​structure, plug-in structure, tenon and mortise structure, to facilitate disassembly and assembly and improve maintenance efficiency.

[0114] As shown in Figures 1, 2, and 11, the housing 160 includes a third half-shell 161 and a fourth half-shell 162. The third half-shells 161 and 162 are detachably connected and can be closed to form a cavity for accommodating the first gear 1412, the second cam 142, the first cam 114, and the elastic element 150. Specifically, the fourth half-shell 162 is located below the third half-shell 161, and the second connecting part 163 can be disposed on the fourth half-shell 162. In other examples, the second connecting part 163 can also be disposed on the third half-shell 161. As shown in Figures 2 and 11, the bottom of the fourth half-shell 162 extends downward to near the first clearance opening 111 of the swing arm 110, so that the mounting base 130 for mounting the first drive unit 121 can be connected to the fourth half-shell 162 through the first clearance opening 111 to achieve a relatively fixed connection with the machine body. It is understood that in some examples, the aforementioned connecting base 131 can also be connected to the fourth half-shell 162.

[0115] In some possible embodiments provided in this application, a limiting part is provided inside the housing 160. The limiting part is used to limit the rotational position of the first cam 114, thereby enabling the first cam 114 to be reliably and accurately limited to a suitable position so that the side brush assembly is kept in the first operating position or the second operating position.

[0116] As shown in Figures 4 and 6, the limiting portion further includes a first limiting portion 164 and a second limiting portion 165 distributed on both sides of the protrusion 1143 of the first cam 114 along the rotation direction of the first cam 114. When the protrusion 1143 abuts against the first limiting portion 164, the first limiting portion 164 limits the rotation of the first cam 114, so that the first side brush assembly can be reliably and accurately maintained in the first operating position. When the protrusion 1143 abuts against the second limiting portion 165, the second limiting portion 165 limits the rotation of the first cam 114, so that the first side brush assembly can be reliably and accurately maintained in the second operating position. The provision of the first limiting portion 164 and the second limiting portion 165 can improve the accuracy of the side brush assembly switching to the first operating position and the second operating position.

[0117] Specifically, the first limiting part 164 and the second limiting part 165 can be elastic elements 150. The elastic elements 150 have a good buffering effect to reduce the damage to the protrusion 1143 of the first cam 114 caused by the first limiting part 164 and the second limiting part 165, which helps to extend the service life of the first cam 114 and improve the reliability of the transmission device 100. Specifically, the first limiting part 164 and the second limiting part 165 can be made of rubber, plastic, etc.

[0118] As shown in Figures 4 and 6, in some possible embodiments provided in this application, the transmission device 100 further includes a position detection device 190, which is used to detect the rotational position of the swing arm 110, or the first cam 114, or the second cam 142, and the second drive assembly 140 rotates or stops rotating according to the detection result of the position detection device 190.

[0119] The position detection device 190 can detect the rotational position of the swing arm 110, the first cam 114, or the second cam 142, thus knowing the rotational position of the swing arm 110. Therefore, when the swing arm 110 rotates to a suitable position, such as when the swing arm 110 moves the side brush assembly to the first or second operating position, the second drive component 140 stops rotating based on the detection result of the position detection device 190, keeping the side brush assembly in the first or second operating position to achieve accurate switching between the first and second operating positions. It can be understood that when the swing arm 110 does not move the side brush assembly to the first or second operating position, the second drive component 140 can continue rotating based on the detection result of the position detection device 190, driving the side brush assembly to continue moving towards the target operating position, such as the first or second operating position.

[0120] The position detection device 190 may include a photoelectric switch, a mechanical switch, or other detection mechanisms that meet the requirements.

[0121] As shown in Figures 4, 6, and 9, in some possible embodiments provided in this application, the position detection device 190 includes a first position switch 191 and a second position switch 192 distributed around the second cam 142. The second cam 142 is provided with a first action part 1423 and a second action part 1424 at both ends along the rotation direction. The first action part 1423 is adapted to trigger the first position switch 191 to change the detection signal, and the second action part 1424 is adapted to trigger the second position switch 192 to change the detection signal.

[0122] In this embodiment, the position detection switch is used to detect the rotational position of the second cam 142. Since the second cam 142 is linked to the first cam 114, and the first cam 114 is coaxially arranged with the swing arm 110, the rotational position of the second cam 142 can be used to determine the rotational position of the swing arm 110, thereby enabling the detection of the position of the side brush assembly located on the swing arm 110. Specifically, by arranging the first position switch 191 and the second position switch 192 at intervals around the second cam 142, the two position switches are used to detect whether the side brush assembly has reached the first operating position and the second operating position, respectively. This improves the accuracy of detecting whether the side brush assembly has reached the target operating position.

[0123] Specifically, by providing a first actuating part 1423 and a second actuating part 1424 at both ends of the second cam 142 along the rotation direction, the rotation of the second cam 142 can drive the first actuating part 1423 and the second actuating part 1424 to rotate synchronously. Since the first actuating part 1423 and the second actuating part 1424 are arranged at intervals along the rotation direction of the second cam 142, when the second cam 142 rotates to a suitable position, the first actuating part 1423 acts on the first position switch 191, causing the first position switch 191 to change its detection signal. If the first position switch 191 is a first photoelectric switch, the first actuating part 1423 is located between the light emitting part and the light receiving part of the first photoelectric switch, preventing the light receiving part from receiving the light signal emitted by the light emitting part, causing the first photoelectric switch to change its detection signal, indicating that the second cam 142 has rotated to a suitable position, placing the side brush assembly in the first operating position. At this time, the swing drive member 1411 of the second drive assembly 140 can stop rotating according to the detection signal of the first position switch 191, so that the side brush assembly is maintained in the first operating position.

[0124] When the second cam 142 rotates to the appropriate position, the second actuating part 1424 acts on the second position switch 192, causing the second position switch 192 to change the detection signal. If the second position switch 192 is a second photoelectric switch, the second actuating part 1424 is located between the light emitting part and the light receiving part of the second photoelectric switch, preventing the light receiving part from receiving the light signal emitted by the light emitting part, causing the second photoelectric switch to change the detection signal, indicating that the second cam 142 has rotated to the appropriate position, placing the side brush assembly in the second operating position. At this time, the swing drive member 1411 of the second drive assembly 140 can stop rotating according to the detection signal of the second position switch 192, so that the side brush assembly is maintained in the second operating position.

[0125] Specifically, as shown in Figure 9, the first actuating part 1423 and the second actuating part 1424 can be stop arms disposed on both sides of the second cam 142.

[0126] As shown in Figures 1, 2, 3, 8, and 10, in some possible embodiments provided in this application, the transmission device 100 further includes: a first anti-collision plate 170, which is connected to the side of the swing arm 110 and is movable relative to the swing arm 110; and a collision detection switch 180, which is disposed on the swing arm 110 and located on the side of the first anti-collision plate 170 facing the inside of the swing arm 110, for detecting the rotational position of the first anti-collision plate 170.

[0127] Since the side brush assembly in the second position is located horizontally outside the machine body, the swing arm 110 may collide with obstacles. Furthermore, during the switching process from the first operating position to the second operating position, the swing arm 110 may also collide with obstacles. Therefore, in this embodiment, a first anti-collision plate 170 is provided on the side of the swing arm 110. This ensures that obstacles collide with the first anti-collision plate 170 instead of directly colliding with the swing arm 110, providing good protection for the swing arm 110, extending its service life, and thus improving the reliability of the transmission device 100. Because the first anti-collision plate 170 is movable relative to the swing arm 110, it effectively buffers collisions with obstacles, reducing damage to the first anti-collision plate 170, extending its service life, and improving the overall reliability of the transmission device 100.

[0128] It is understood that the first anti-collision plate 170 may be floating relative to the swing arm 110, so that the first anti-collision plate 170 is movable relative to the swing arm 110 within a first range. For example, the swing arm 110 is provided with a sliding groove, the first anti-collision plate 170 is disposed in the sliding groove, and can move towards or away from the swing arm 110 within a certain range.

[0129] By setting a collision detection switch 180 on the swing arm 110, the collision detection switch 180 is located on the side of the first anti-collision plate 170 facing the inside of the swing arm 110. In this way, when the first anti-collision plate 170 collides with an obstacle, the first anti-collision plate 170 will move towards the inside of the swing arm 110 to trigger the collision detection switch 180 to send collision information. The control system of the cleaning equipment can perform corresponding operations, such as avoidance operation, pushing operation, etc., according to the control program based on the collision information sent by the collision detection switch 180.

[0130] Specifically, the collision detection switch 180 can be a photoelectric switch, a mechanical switch, etc.

[0131] As shown in Figure 9, in some possible embodiments provided in this application, the collision detection switch 180 is provided with a reset member 181, or the swing arm 110 is provided with a reset member 181; the reset member 181 is used to accumulate elastic potential energy during the process of the first anti-collision plate 170 moving towards the collision detection switch 180, and the reset member 181 is used to release the elastic potential energy to drive the first anti-collision plate 170 to move away from the collision detection switch. Thus, when the first anti-collision plate 170 separates from the obstacle, the reset member 181 can reset the first anti-collision plate 170 to its initial position, thereby providing good protection.

[0132] The collision detection switch 180 may be equipped with a reset element 181. For example, the collision detection switch 180 may be a mechanical switch, and the reset element 181 may be a spring of the mechanical switch. When the first anti-collision plate 170 collides with an obstacle, it moves toward the inside of the swing arm 110 and pushes the spring to deform, thereby triggering the mechanical switch to operate, thus realizing the detection of the obstacle. When the first anti-collision plate 170 separates from the obstacle, the spring returns to its original shape, pushing the first anti-collision plate 170 back to its initial position.

[0133] The reset member 181 can also be mounted on the swing arm 110. For example, the first end of the reset member 181 is connected to the swing arm 110, and the second end of the reset member 181 abuts against the first anti-collision plate 170. The collision detection switch 180 is located between the two ends of the reset member 181. When the first anti-collision plate 170 collides with an obstacle, it moves inward toward the swing arm 110, causing the reset member 181 to deform. After moving to a suitable position, it triggers the collision detection switch 180, thereby detecting the obstacle. When the first anti-collision plate 170 separates from the obstacle, the reset member 181 restores its deformation, pushing the first anti-collision plate 170 back to its initial position. Specifically, the reset member 181 can be a spring.

[0134] In some possible embodiments provided in this application, the cleaning device further includes: a second anti-collision plate, which is connected to the side of the machine body and is movable relative to the machine body, and a second clearance opening is provided on the second anti-collision plate; during the switching process between the first operating position and the second operating position of the side brush assembly, at least the portion of the swing arm 110 connected to the second anti-collision plate passes through the second clearance opening; or, when the side brush assembly is in the first operating position, the first anti-collision plate 170 is located at the second clearance opening.

[0135] The second anti-collision plate can be understood as the front impact plate of the cleaning equipment. The second anti-collision plate protects the side of the machine body from impact, which helps to extend the service life of the machine body and improve the overall reliability of the cleaning equipment.

[0136] In this design, by opening a second clearance opening on the second anti-collision plate, during the switching process between the first and second operating positions of the side brush assembly, part of the swing arm 110 passes through the second clearance opening. In other words, the swing arm 110 switches the side brush assembly between the first and second operating positions by passing through the second clearance opening of the second anti-collision plate. This arrangement makes the layout of the transmission device 100 and the machine body more compact, which can meet the design requirements of compact structure and small size of cleaning equipment.

[0137] Furthermore, in one example, during the switching between the first and second operating positions of the side brush assembly, the portion of the swing arm 110 connected to the first anti-collision plate 170 passes through the second clearance opening. This allows the first anti-collision plate 170 on the swing arm 110 to compensate for the lack of anti-collision protection at the second clearance opening of the second anti-collision plate, thereby making the anti-collision protection function of the cleaning equipment more comprehensive and improving the overall reliability of the cleaning equipment. In this case, when the side brush assembly is in the first operating position, the first anti-collision plate 170 can be located inside the machine body. At this time, the second anti-collision plate is used to provide anti-collision protection for the entire cleaning equipment. When the side brush assembly is in the second operating position, the first anti-collision plate 170 can be located outside the machine body. The first and second anti-collision plates work together to provide anti-collision protection for the cleaning equipment.

[0138] In another example, when the side brush assembly is in the first operating position, the first anti-collision plate 170 can be located at the second clearance opening. Thus, the first anti-collision plate 170 on the swing arm 110 compensates for the lack of anti-collision protection at the second clearance opening of the second anti-collision plate, thereby making the anti-collision protection function of the cleaning equipment more comprehensive and improving the overall reliability of the cleaning equipment. In this case, when the side brush assembly is in the first operating position, the first anti-collision plate 170 and the second anti-collision plate can be set flush. At this time, the first anti-collision plate 170 and the second anti-collision plate work together to provide anti-collision protection for the entire cleaning equipment. When the side brush assembly is in the second operating position, the first anti-collision plate 170 can be located outside the machine body, and the first anti-collision plate 170 and the second anti-collision plate work together to provide anti-collision protection for the cleaning equipment.

[0139] An embodiment of this application also provides a cleaning module applied to a cleaning device. The cleaning module includes a side brush assembly and a transmission device 100 according to any embodiment of the first aspect, wherein the side brush assembly is disposed on a swing arm 110. Since the cleaning module includes the transmission device 100 of any of the aforementioned embodiments, it has all the effects of the aforementioned transmission device 100.

[0140] In this embodiment, the side brush assembly is mounted on the swing arm 110 of the transmission device 100, and the transmission device 100 and the side brush assembly are modularly designed. Therefore, the cleaning module can be selectively installed on the machine body according to the design requirements of the cleaning equipment. For example, when the cleaning equipment design requires the use of the side brush assembly to clean corners and edges to further increase the cleaning range, the cleaning module provided in this embodiment can be installed on the machine body; when the cleaning equipment design requires the use of the side brush assembly for routine cleaning operations, existing side brush assemblies and the transmission device 100 can be installed on the machine body. This design is simple to operate, easy to install, highly practical, and has a wide range of applications.

[0141] Understandably, modularizing the transmission device 100 and the side brush assembly allows for testing and adjustment of the transmission device 100 before installing the cleaning module onto the machine body. This can be achieved using an external power supply and the cleaning equipment's control program to test the rotation of the swing arm 110, the switching of the side brush assembly's operating position, and the rotation of the side brush assembly. If any issues are found, adjustments can be made directly. This approach simplifies the process compared to installing the cleaning module onto the machine body and then performing overall machine testing to check the swing arm 110's rotation, the switching of the side brush assembly's operating position, and the rotation of the side brush assembly. If any issues are found, the cleaning module must be removed from the machine body for adjustment. This simplified process makes the operation simpler and more convenient. After successful testing and adjustment, the cleaning module can be installed onto the machine body, simplifying the testing and adjustment process and improving overall machine testing efficiency.

[0142] Furthermore, the cleaning module can be tested and debugged before it is installed on the main body of the machine. After it passes the test, the cleaning module is installed on the main body of the machine and the whole machine is debugged again. Since the cleaning module has been tested and debugged before it is installed on the main body of the machine, compared with the cleaning module being installed on the main body of the machine directly without testing and debugging, the failure rate can be greatly reduced, the probability of disassembling the cleaning module and the main body of the machine can be reduced, and the efficiency of whole machine debugging can be improved.

[0143] This application has been described through the above embodiments. However, it should be understood that the above embodiments are for illustrative purposes only and are not intended to limit this application to the scope of the described embodiments. Furthermore, those skilled in the art will understand that this application is not limited to the above embodiments, and many more variations and modifications can be made based on the teachings of this application, all of which fall within the scope of protection claimed in this application. The scope of protection of this application is defined by the appended claims and their equivalents.

Claims

1. A transmission (100), wherein, The application is applied to a cleaning device, the cleaning device comprises a machine body and a brush assembly, and the transmission device (100) comprises: a swing arm (110) which is rotationally connected to the machine body, the brush assembly is arranged on the swing arm (110), and the swing arm (110) rotates relative to the machine body to drive the brush assembly to switch between a first operating position and a second operating position; a first driving assembly (120) which is connected to the brush assembly and is configured to drive the brush assembly to rotate about a central axis of the brush assembly; wherein the central axis of the first driving assembly (120) is coaxially arranged with the central axis of the swing arm (110).

2. The transmission device (100) according to claim 1, wherein the first driving assembly (120) comprises a first driving part (121) and a first transmission part (122), the first driving part (121) is arranged in the swing arm (110) and is fixedly arranged relative to the machine body, the central axis of the first driving part (121) coincides with the central axis of the swing arm (110), the first transmission part (122) is connected to the brush assembly and at least a part of the first transmission part (122) is arranged in the swing arm (110), and the first driving part (121) drives the brush assembly to rotate through the first transmission part (122).

3. The transmission (100) of claim 2, wherein, Further comprising: a fixing seat (130), a first avoiding opening (111) is arranged on the periphery of the swing arm (110), the fixing seat (130) is arranged in the first avoiding opening (111), the fixing seat (130) located outside the swing arm (110) is configured to be connected to the machine body, and the fixing seat (130) located in the swing arm (110) is configured to be connected to the first driving part (121).

4. The transmission device (100) according to claim 3, wherein the swing arm (110) comprises a first half shell (112) and a second half shell (113), the first half shell (112) and the second half shell (113) are connected and enclose the first avoiding opening (111).

5. The transmission (100) of claim 2, wherein, Further comprising: a second driving assembly (140) and an elastic member (150), a first end of the elastic member (150) is connected to the swing arm (110), a second end of the elastic member (150) is fixedly arranged relative to the machine body, and the second driving assembly (140) is configured to cooperate with the elastic member (150) to drive the swing arm (110) to rotate.

6. The transmission device (100) according to claim 5, wherein during switching of the brush assembly between the first operating position and the second operating position, the first driving assembly (120) abuts against the swing arm (110) to drive the swing arm (110) to rotate.

7. The transmission device (100) according to claim 5, wherein A first end of the swing arm (110) is connected with a first cam (114), a second end of the swing arm (110) is connected with the edge brush assembly, during switching between the first operation position and the second operation position of the edge brush assembly, the second driving assembly (140) abuts against a convex part (1143) of the first cam (114) to rotate the swing arm (110), the first cam (114) is coaxially arranged with the swing arm (110); wherein a first end of the elastic member (150) is connected to the first cam (114); and / or a first end of the elastic member (150) is connected to the swing arm (110).

8. The transmission device (100) according to claim 7, wherein a first connecting part (1141) is arranged on a circumferential side of the first cam (114), the first connecting part (1141) is configured to be connected with the first end of the elastic member (150); a guide groove (1142) is arranged on the circumferential side of the first cam (114) along a rotation direction of the first cam (114), part of the elastic member (150) is accommodated in the guide groove (1142), the guide groove (1142) is configured to limit the axial movement of the elastic member (150) along the first cam (114).

9. The transmission device (100) according to claim 7, wherein the second driving assembly (140) is configured to drive the first cam (114) to rotate in a first direction, so that the elastic member (150) is deformed to accumulate elastic potential energy, and the edge brush assembly is switched from the second operation position to the first operation position.

10. The transmission device (100) according to claim 7, wherein the elastic potential energy released by the elastic member (150) is configured to drive the first cam (114) to rotate in a second direction, so that the edge brush assembly is switched from the first operation position to the second operation position.

11. The transmission device (100) according to claim 7, wherein the second driving assembly (140) comprises a second driving part (141) and a second cam (142), the second cam (142) abuts against the first cam (114), the second driving part (141) is configured to drive the second cam (142) to rotate, so that the first cam (114) is driven to rotate.

12. The transmission device (100) according to claim 11, wherein when the edge brush assembly is in the first operation position, an abutment point of the first cam (114) and the second cam (142) coincides with a tangent point of a curve formed by a rotation track of the second cam (142) and the first cam (114).

13. The transmission device (100) according to claim 11, wherein The second cam (142) comprises a sector gear portion (1421) and an abutting portion (1422), the first driving portion (121) is engaged with the sector gear portion (1421), and the abutting portion (1422) is abutted with the first cam (114).

14. The transmission device (100) according to claim 13, wherein, The second driving portion (141) comprises a swing driving member (1411) and a first gear (1412), the swing driving member (1411) is connected with the first gear (1412), the first gear (1412) is engaged with the sector gear portion (1421), and the swing driving member (1411) drives the abutting portion (1422) to push the first cam (114) to rotate through the first gear (1412) and the sector gear portion (1421), so as to drive the swing arm (110) to rotate synchronously.

15. The transmission (100) of claim 14, wherein, Further comprising: a housing (160) fixedly connected with the machine body, the swing driving member (1411) and the swing arm (110) are located outside the housing (160), the first gear (1412), the second cam (142), the first cam (114) and the elastic member (150) are located inside the housing (160), the first gear (1412) is connected with the swing driving member (1411) in power through the housing (160), and the second end of the elastic member (150) is connected with the housing (160).

16. The transmission device (100) according to claim 15, wherein, A limiting portion is arranged in the housing (160), and the limiting portion is configured to limit the rotating position of the first cam (114); The limiting portion comprises a first limiting portion (164) and a second limiting portion (165) distributed on both sides of the convex portion (1143) of the first cam (114) along the rotating direction of the first cam (114).

17. The transmission (100) of claim 11, wherein, Further comprising: a position detection device (190) configured to detect the rotating position of the swing arm (110), or the first cam (114), or the second cam (142), and the second driving assembly (140) rotates or stops rotating according to the detection result of the position detection device (190).

18. The transmission device (100) according to claim 17, wherein, The position detection device (190) comprises a first position switch (191) and a second position switch (192) distributed on the side of the second cam (142), the second cam (142) is provided with a first acting portion (1423) and a second acting portion (1424) at both ends along the rotating direction, the first acting portion (1423) is adapted to trigger the first position switch (191) to change the detection signal, and the second acting portion (1424) is adapted to trigger the second position switch (192) to change the detection signal.

19. The transmission device (100) according to claim 7, wherein, The elastic member (150) is a tension spring, a first end of the tension spring is connected with the first cam (114), and a second end of the tension spring is fixed relative to the machine body. The elastic member (150) is a torsion spring, the torsion spring is arranged at a rotating shaft of the first cam (114), a first end of the torsion spring is connected with the first cam (114), and a second end of the torsion spring is fixed relative to the machine body. The elastic member (150) is an elastic sheet, a first end of the elastic sheet is connected with the first cam (114), and a second end of the elastic sheet is fixed relative to the machine body.

20. The transmission (100) of claim 4, wherein, Further comprising: A first anti-collision plate (170) connected to a side of the swing arm (110) and movable relative to the swing arm (110); A collision detection switch (180) arranged on the swing arm (110) and located on a side of the first anti-collision plate (170) facing the inside of the swing arm (110), configured to detect the rotating position of the first anti-collision plate (170).

21. The transmission device (100) according to claim 20, wherein The collision detection switch (180) is provided with a reset member (181), or the swing arm (110) is provided with a reset member (181); The reset member (181) is configured to accumulate elastic potential energy during the movement of the first anti-collision plate (170) towards the collision detection switch (180), and release the elastic potential energy to drive the first anti-collision plate (170) to move away from the collision detection switch (180).

22. A cleaning module, wherein, Comprising: An edge brush assembly and the transmission device (100) according to any one of claims 1 to 21.

23. A cleaning apparatus wherein, Comprising: A machine body; And the cleaning module according to claim 22; wherein at least part of the edge brush assembly in the first operating position is located inside the machine body in the horizontal direction, at least part of the edge brush assembly in the second operating position is located outside the machine body in the horizontal direction, and the area of the edge brush assembly in the second operating position outside the machine body in the horizontal direction is greater than the area of the edge brush assembly in the first operating position outside the machine body in the horizontal direction.

24. The cleaning apparatus of claim 23, wherein, Further comprising: A second anti-collision plate connected to a side of the machine body and movable relative to the machine body, and a second avoiding opening is formed in the second anti-collision plate; During the switching of the edge brush assembly between the first operating position and the second operating position, the part of the first anti-collision plate (170) connected to the swing arm (110) passes through the second avoiding opening; Or, When the edge brush assembly is in the first operating position, the first anti-collision plate (170) is located at the second avoiding opening.

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