Cleaning device

Abstract

The utility model relates to a cleaning device. The cleaning device comprises a device body, a driving assembly and a rolling brush assembly. Wherein the driving assembly comprises a machine shell, a driving unit and a coupler, and the coupler is in transmission connection with the driving unit; the coupler is arranged at the first end of the machine shell and moves between a first position and a second position in the axial direction so as to close or open the first end of the machine shell. The driving assembly comprises a speed reduction part located in the machine shell, and the speed reduction part is axially connected with the coupler. The driving assembly further comprises a first sealing piece arranged at the first end of the machine shell, the first sealing piece comprises a first axial sealing part and a first circumferential sealing part which are integrally formed, when the coupler is located at the first position, the first axial sealing part abuts against and is attached to the coupler to seal the first end, and when the coupler is located at the second position, the first circumferential sealing part abuts against and is attached to the coupler to seal the second end. The coupling is far away from the first axial sealing part in the axial direction to open the first end; the first circumferential sealing part is located in a gap between the machine shell and the speed reduction part.

Description

TECHNICAL FIELD

[0001] The present disclosure relates to the field of cleaning equipment, in particular to a cleaning device. BACKGROUND

[0002] The existing scrubber is usually equipped with a motor driving assembly to drive the rotation of the roller brush. The roller brush cavity of the ground brush of the scrubber is prone to accumulate dirt, especially the suction nozzle of the roller brush cavity and the water scraping strip part combined with the roller brush. Therefore, for these dirt, the user will disassemble the roller brush and directly wash it with water. For the built-in motor driving assembly inside the roller brush, at this time, the built-in motor driving assembly inside the roller brush is exposed and is prone to direct washing by water, which can cause water to enter the exposed motor driving assembly, thereby causing the motor driving assembly to fail to work normally, affecting the user's experience.

[0003] At the same time, the waterproof design of the existing roller brush built-in motor driving assembly mainly increases the sealing element setting at each gap exposed outside, which results in a large number of sealing elements and may cause assembly errors during assembly, thereby causing incomplete sealing due to assembly errors. CONTENT OF THE UTILITY MODEL

[0004] The present disclosure provides a cleaning device to solve the problems in the prior art.

[0005] According to a first aspect of the present disclosure, a cleaning device is provided, comprising:

[0006] a device body;

[0007] a driving assembly arranged on the device body;

[0008] a roller brush assembly configured to be sleeved on the outside of the casing of the driving assembly and configured to be in transmission connection with the output end of the driving unit of the driving assembly;

[0009] the driving assembly comprises a casing, a driving unit and a shaft coupling, and the shaft coupling is in transmission connection with the driving unit;

[0010] the shaft coupling is arranged at the first end of the casing and is configured to move axially between a first position and a second position to close or open the first end of the casing;

[0011] the driving assembly comprises a speed reduction part located in the casing, and the speed reduction part is axially connected with the shaft coupling;

[0012] The drive assembly further includes a first seal disposed at the first end of the housing. The first seal includes an integrally formed first axial seal portion and a first circumferential seal portion, and is configured such that when the coupling is in a first position, the first axial seal portion abuts against and fits against the coupling to close the first end, and when in a second position, the coupling moves axially away from the first axial seal portion to open the first end; the first circumferential seal portion is located in the gap between the housing and the reduction gear.

[0013] In the working state of the cleaning device disclosed herein, that is, when the roller brush assembly is fitted onto the housing of the drive assembly, the coupling is in the second position, moving axially away from the first axial sealing portion of the first seal, thereby opening the first end of the housing to facilitate internal heat dissipation during the operation of the drive assembly.

[0014] When the cleaning device of this disclosure needs to be cleaned, after the roller brush assembly is disassembled from the housing of the drive assembly, the coupling is in the first position, and the first axial sealing portion of the first seal abuts and fits against the coupling, thereby sealing the first end to prevent water ingress into the exposed drive assembly due to the opening of the first end of the housing. At the same time, the first circumferential sealing portion ensures the clearance between the sealing reduction portion and the housing, achieving bidirectional sealing in both the axial and circumferential directions. The integrated design of the first axial sealing portion and the first circumferential sealing portion facilitates assembly.

[0015] The first axial seal is annular in shape and extends radially along the longitudinal section of the drive assembly. When the coupling is in the first position, the first axial seal can abut and fit against all the circumferential edges of the coupling, completely sealing the first opening and preventing gaps between the coupling and the first axial seal. This prevents external water from entering the housing and thus prevents water from entering the drive unit inside the housing, ensuring normal operation of the drive unit, extending the service life of the drive unit, and the flatness and installation accuracy requirements of the first seal are relatively low.

[0016] Other features and advantages of this disclosure will become clear from the following detailed description of exemplary embodiments with reference to the accompanying drawings. Attached Figure Description

[0017] The accompanying drawings, which are incorporated in and form a part of this specification, illustrate embodiments of the present disclosure and, together with their description, serve to explain the principles of the present disclosure.

[0018] Figure 1 This is a perspective view of the driving component provided in an embodiment of this disclosure;

[0019] Figure 2 This is an exploded view of the driving component provided in an embodiment of this disclosure;

[0020] Figure 3 This is a cross-sectional schematic diagram of the drive assembly when the coupling is in the second position according to an embodiment of this disclosure;

[0021] Figure 4 This is another cross-sectional schematic diagram of the drive assembly when the coupling is in the second position according to an embodiment of this disclosure;

[0022] Figure 5 yes Figure 3 A partially enlarged schematic diagram;

[0023] Figure 6 This is a partial perspective view of the driving component provided in an embodiment of this disclosure;

[0024] Figure 7 This is a cross-sectional schematic diagram of another driving component provided in an embodiment of this disclosure;

[0025] Figure 8 This is a cross-sectional schematic diagram of the reduction housing of another drive component provided in an embodiment of this disclosure;

[0026] Figure 9 This is a perspective view of the deceleration housing of another drive component provided in an embodiment of this disclosure.

[0027] Figures 1 to 9 The one-to-one correspondence between the component names and the reference numerals in the figures is as follows:

[0028] 1. Housing; 11. First seal; 111. First axial seal; 112. First circumferential seal; 1121. First circumferential annular seal; 1122. First circumferential through-hole seal; 1123. First through-hole; 12. First mounting component; 13. First receiving cavity; 14. Second receiving cavity; 15. Second seal; 151. Second circumferential annular seal; 152. Second circumferential through-hole seal; 153. Second through-hole; 1 6. Second mounting component; 2. Drive unit; 22. Magnetic guard ring; 23. Rotating shaft; 3. Coupling; 31. Spring; 32. First opening; 4. Reduction section; 41. Reduction housing; 411. First limiting protrusion; 412. Receiving groove; 5. Support section; 51. Second opening; 52. Second limiting protrusion; 6. Extension section; 61. Shock-absorbing pad; 7. Sliding bearing; 81. First impeller; 82. Second impeller; M. First end; N. Second end. Detailed Implementation

[0029] Various exemplary embodiments of the present disclosure will now be described in detail with reference to the accompanying drawings. It should be noted that, unless specifically stated otherwise, the relative arrangement, numerical expressions, and values ​​of the components and steps set forth in these embodiments do not limit the scope of the present disclosure. In all examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not as limitations. Therefore, other examples of exemplary embodiments may have different values.

[0030] Numerous specific details are set forth in the following description to provide a full understanding of this disclosure. However, this disclosure can be implemented in many other ways than those described herein, and similar extensions can be made by those skilled in the art without departing from the spirit of this disclosure; therefore, this disclosure is not limited to the specific implementations disclosed below. Techniques, methods, and apparatus known to those skilled in the art may not be discussed in detail, but where appropriate, such techniques, methods, and apparatus should be considered part of the specification.

[0031] The terminology used in one or more embodiments of this disclosure is for the purpose of describing particular embodiments only and is not intended to be limiting of the one or more embodiments of this disclosure. The singular forms “a,” “the,” and “the” as used in one or more embodiments of this disclosure and the appended claims are also intended to include the plural forms unless the context clearly indicates otherwise. It should also be understood that the term “and / or” as used in one or more embodiments of this disclosure refers to and includes any or all possible combinations of one or more associated listed items.

[0032] It should be understood that although the terms second, first, etc., may be used to describe various information in one or more embodiments of this disclosure, such information should not be limited to these terms. These terms are only used to distinguish information of the same type from one another. For example, second may also be referred to as first without departing from the scope of one or more embodiments of this disclosure, and similarly, first may also be referred to as second. Depending on the context, the word “if” as used herein may be interpreted as “when”, “in response to a determination”, or “upper”, “lower”, “front”, “back”, “left”, “right”, etc., are used only to indicate the relative positional relationship between related parts, and not to define the absolute position of these related parts. In this document, “equal”, “same”, etc., are not strict mathematical and / or geometric limitations, and also include errors that are understandable to those skilled in the art and permissible in manufacturing or use. Unless otherwise stated, numerical ranges in this document include not only the entire range within its two endpoints, but also several sub-ranges contained therein.

[0033] This disclosure provides a cleaning device including a device body, a drive assembly, and a roller brush assembly. The drive assembly is disposed on the device body. The roller brush assembly is configured to be sleeved on the outside of the housing of the drive assembly and is configured to be drively connected to the output end of the drive unit of the drive assembly. In this way, the drive assembly can drive the roller brush assembly to rotate to clean the working surface.

[0034] It is understood that the main body of the device can be the floor brush assembly of the cleaning device, which is pivotally connected to the body of the cleaning device. A handle for user operation can also be provided on the top of the body, without any restrictions.

[0035] Specifically, the drive assembly includes a housing, a drive unit, a coupling, and a first seal. The housing is used to house the drive unit and other structures to protect them. The coupling is connected to the drive unit for transmission, and the drive unit can drive the coupling to rotate, thereby driving the roller brush assembly to rotate, thus cleaning the working surface.

[0036] The drive assembly disclosed herein also includes a reduction gear located within a housing, the reduction gear being axially connected to a coupling. The reduction gear can be disposed between the coupling and the drive unit, and the coupling is configured to be driveably connected to the drive unit via the reduction gear. That is, during the operation of the drive assembly of this disclosure, the drive unit can drive the coupling to rotate via the reduction gear, the reduction gear being used to reduce the output speed of the drive unit and increase the output torque of the drive unit.

[0037] The rotation axis direction of the drive unit output end is defined as axial. A coupling is disposed at the first end of the housing and configured to move axially between a first position and a second position to close or open the first end of the housing. A first seal is also disposed at the first end of the housing, comprising an integrally formed first axial sealing portion and a first circumferential sealing portion. The first seal is constructed of a flexible material and configured such that, when the coupling is in the first position, the first axial sealing portion abuts against and fits against the coupling to close the first end; and when in the second position, the coupling moves axially away from the first axial sealing portion to open the first end. The first circumferential sealing portion is located within the gap between the housing and the reduction gear.

[0038] In the working state of the cleaning device disclosed herein, that is, when the roller brush assembly is fitted onto the housing of the drive assembly, the coupling is in the second position, moving axially away from the first axial sealing portion of the first seal, thereby opening the first end of the housing to facilitate internal heat dissipation during the operation of the drive assembly.

[0039] When the cleaning device of this disclosure needs to be cleaned, after the roller brush assembly is disassembled from the housing of the drive assembly, the coupling is in the first position, and the first axial sealing portion of the first seal abuts and fits against the coupling, thereby sealing the first end to prevent water ingress into the exposed drive assembly due to the opening of the first end of the housing. At the same time, the first circumferential sealing portion ensures the clearance between the sealing reduction portion and the housing, achieving bidirectional sealing in both the axial and circumferential directions. The integrated design of the first axial sealing portion and the first circumferential sealing portion facilitates assembly.

[0040] The first axial seal is annular in shape and extends radially along the longitudinal section of the drive assembly. When the coupling is in the first position, the first axial seal can abut and fit against all the circumferential edges of the coupling, completely sealing the first opening and preventing gaps between the coupling and the first axial seal. This prevents external water from entering the housing and thus prevents water from entering the drive unit inside the housing, ensuring normal operation of the drive unit, extending the service life of the drive unit, and the flatness and installation accuracy requirements of the first seal are relatively low.

[0041] For ease of understanding, please refer to the following: Figures 1 to 9 The specific structure and working principle of the drive component and cleaning device of this disclosure will be described in detail with reference to one embodiment.

[0042] like Figures 1 to 4 As shown, this disclosure provides a cleaning device, which includes a device body, a drive assembly, and a roller brush assembly. The drive assembly is disposed on the device body; the roller brush assembly is configured to be sleeved on the outside of the housing 1 of the drive assembly and is configured to be drively connected to the output end of the drive unit 2 of the drive assembly. In this way, the drive assembly can drive the roller brush assembly to rotate to clean the working surface.

[0043] It is understood that the main body of the device can be the floor brush assembly of the cleaning device, which is pivotally connected to the body of the cleaning device. A handle for user operation can also be provided on the top of the body, without any restrictions.

[0044] Specifically, such as Figures 2 to 4 As shown, the drive assembly includes a housing 1, a drive unit 2, a coupling 3, and a first seal 11. The housing 1 is used to accommodate the drive unit 2 and other structures to protect the drive unit 2 and other mechanisms. The coupling 3 is connected to the drive unit 2 for transmission. The drive unit 2 can drive the coupling 3 to rotate, thereby driving the roller brush assembly to rotate, thus cleaning the working surface.

[0045] The rotation axis direction of the output end of drive unit 2 is defined as axial, and the two opposite ends of the drive assembly in the axial direction are respectively referred to as the first end and the second end. Coupling 3 is disposed at the first end of housing 1 and is configured to move axially between a first position and a second position to close or open the first end of housing 1. A first seal 11 is also disposed at the first end of housing 1. The first seal 11 includes an integrally formed first axial sealing portion 111 and a first circumferential sealing portion 112. The first seal 11 is constructed of a flexible material and is configured such that when coupling 3 is in the first position, the first axial sealing portion 111 abuts and fits against coupling 3 to close the first end; when in the second position, coupling 3 moves axially away from the first axial sealing portion 111 to open the first end. Specifically, the first axial sealing portion 111 abuts against a radially extending circular skirt formed by coupling 3.

[0046] In the working state of the cleaning device disclosed herein, that is, when the roller brush assembly is fitted onto the housing 1 of the drive assembly, the coupling 3 is in the second position, moving away axially from the first axial sealing portion 111 of the first seal 11, thereby opening the first end of the housing 1 to facilitate internal heat dissipation when the drive assembly is working.

[0047] When the cleaning device disclosed herein needs to be cleaned, after the roller brush assembly is disassembled from the housing 1 of the drive assembly, the coupling 3 is in the first position, and the first axial sealing part 111 of the first seal 11 abuts and fits against the coupling 3, thereby sealing the first end to avoid the risk of water ingress into the exposed drive assembly due to the opening of the first end of the housing 1.

[0048] Specifically, the first seal 11 can be made of various flexible materials, such as silicone, other rubbers, or other types of flexible materials, etc., without limitation. The first seal 11, made of flexible material, abuts against the radially extending skirt of the coupling 3 to achieve a complete circumferential seal. Even if the flatness of the skirt of the coupling 3 is problematic due to installation or manufacturing issues, the first seal 11 made of flexible material can compensate for the gaps caused by these problems, avoiding the problem in the prior art where both abutting sides are made of rigid materials, resulting in gaps still existing in the sealed abutting state.

[0049] like Figure 3 As shown, the drive assembly of this disclosure also includes a reduction gear 4 located within the housing 1, and the reduction gear 4 is axially connected to the coupling 3. The reduction gear 4 is disposed between the coupling 3 and the drive unit 2, and the coupling 3 is configured to be driveably connected to the drive unit 2 via the reduction gear 4.

[0050] In the operation of the drive assembly disclosed herein, the drive unit 2 can drive the coupling 3 to rotate via the reduction unit 4. The reduction unit 4 is used to reduce the output speed of the drive unit 2 and increase the output torque of the drive unit 2. It is understood that the reduction unit 4 can be a planetary gear reduction mechanism or other types of mechanisms, and no limitation is made herein.

[0051] like Figure 3 As shown, the first circumferential sealing part 112 is located in the gap between the housing 1 and the reduction gear 4. Specifically, the first circumferential sealing part 112 is constructed to extend axially and is clamped between the reduction gear 4 and the housing 1. Since the first circumferential sealing part 112 extends axially and is clamped between the reduction gear 4 and the housing 1, it can effectively fill the gap between the outer circumferential surface of the reduction gear 4 and the inner circumferential surface of the first end of the housing 1, preventing external water from entering the housing 1 through the gap between the reduction gear 4 and the housing 1, and ensuring the normal operation of the drive unit 2 and the reduction gear 4.

[0052] The first circumferential sealing part 112 ensures the gap between the sealing deceleration part 4 and the housing 1, thereby achieving bidirectional sealing in both the axial and circumferential directions. The integrated design of the first axial sealing part 111 and the first circumferential sealing part 112 makes assembly more convenient.

[0053] like Figure 5 and Figure 6 As shown, in one embodiment of this disclosure, the first axial sealing part 111 is generally annular and extends radially. Thus, when the coupling 3 is in the first position, the first axial sealing part 111 can abut and fit against the circumferential edges of the skirt of the coupling 3, completely sealing the first opening 32, preventing gaps from appearing between the coupling 3 and the first axial sealing part 111, preventing external water from entering the housing 1, thereby preventing water from entering the drive unit 2 inside the housing 1, ensuring the normal operation of the drive unit 2, extending the service life of the drive unit 2, and the flatness requirements and installation accuracy requirements of the first sealing part 11 and the skirt of the coupling 3 that abuts against it are also relatively low.

[0054] In one embodiment of this disclosure, such as Figure 1 As shown, the first seal 11 and the housing 1 form a continuous outer surface, allowing the first seal 11 to be smoothly connected to the housing 1 without forming a step or gap between them. This ensures the airtightness of the housing 1, preventing water ingress points from forming between the first seal 11 and the housing 1, thus preventing external water from entering the housing 1 and preventing water ingress into the drive unit 2 inside the housing 1, ensuring the normal operation of the drive unit 2.

[0055] like Figure 5 and Figure 6As shown, in one embodiment of this disclosure, a first limiting protrusion 411 is provided on the outer peripheral surface of the deceleration part 4, and a first circumferential sealing part 112 is configured to adhere to the outer peripheral surface of the deceleration part 4 and is provided with a first through hole 1123 through which the first limiting protrusion 411 passes. The first limiting protrusion 411 passes outward through the first through hole 1123 to achieve installation limiting of the first circumferential sealing part 112. The drive assembly also includes a first mounting member 12 for fixing the housing 1 to the deceleration part 4. The first limiting protrusion 441 is provided with a mounting hole, and the first mounting member 12 is configured to be fixedly installed on the mounting hole of the first limiting protrusion 411, so that the housing 1 is fixed to the deceleration part 4 and fits and limits the first limiting protrusion 411, and the first circumferential sealing part 112 is fixedly disposed between the outer peripheral surface of the deceleration part 4 and the inner peripheral surface of the first end of the housing 1. The housing 1 has a through hole. The through hole of the housing 1, the mounting hole of the reduction gear 4, and the first through hole 1123 are aligned to allow the first mounting member 12 to pass through and fix the housing 1 and the reduction gear 4 together. The first circumferential sealing part 112 fills and seals the gap between the housing 1 and the reduction gear 4. With the above configuration, when the reduction gear 4, which is fitted with the first sealing member 11, is axially installed into the housing 1, even if the first circumferential sealing part 112 contacts the inner surface of the housing 1 and generates a force away from the reduction gear 4, the first sealing member 11 will not fall off due to the limiting effect of the first limiting protrusion 411. At the same time, the mounting hole of the first limiting protrusion 441 is not connected to the interior, so even if water enters, it will not affect the use of the drive assembly. The mounting hole is surrounded by the first through hole 1123, which ensures that external water will not diffuse into the gap between the housing 1 and the reduction gear 4 after entering through the gap between the through hole of the housing 1 and the first mounting member 12, thus avoiding damage.

[0056] Thus, during the installation of the drive assembly disclosed herein, the first through hole 1123 of the first circumferential sealing part 112 is first fitted onto the first limiting protrusion 411 on the outer circumferential surface of the reduction part 4. Then, the first mounting member 12 is fixedly installed onto the first limiting protrusion 411 on the outer circumferential surface of the reduction part 4, thereby fixing the housing 1 and the reduction part 4 together. The first circumferential sealing part 112 is fixedly positioned between the outer circumferential surface of the reduction part 4 and the inner circumferential surface of the first end of the housing 1. This not only ensures that the housing 1 and the first limiting protrusion 411 of the reduction part 4 fit together, preventing gaps between them, but also allows the first mounting member 12 to press the first circumferential sealing part 112 into the gap between the outer circumferential surface of the reduction part 4 and the inner circumferential surface of the first end of the housing 1. The first mounting member 12 can be a screw or other mounting parts, and is not limited herein.

[0057] Specifically, such as Figure 6As shown, in one embodiment of this disclosure, the first circumferential sealing portion 112 includes an annular first circumferential sealing portion 1121 extending axially and a plurality of first circumferential through-hole sealing portions 1122 further extending axially from the first circumferential annular sealing portion 1121 and arranged circumferentially. A first through-hole 1123 is disposed in the first circumferential through-hole sealing portion 1122. The number of first circumferential through-hole sealing portions 1122 is plurality, and they are arranged at circumferential intervals along the annular first circumferential annular sealing portion 1121.

[0058] Specifically, the number of first limiting protrusions 411 and first circumferential through-hole sealing portions 1122 are the same, and their positions correspond to each other. The first circumferential annular sealing portion 1121 is annular in shape and is integrally connected with each of the first circumferential through-hole sealing portions 1122. The first circumferential through-hole sealing portion 1122 is used to seal the gap between the housing 1 and the reduction gear 4 around the first limiting protrusion 411, and the first circumferential annular sealing portion 1121 is used to seal the gap at the first end of the housing 1 and the reduction gear 4.

[0059] like Figure 2 and Figure 3 As shown, in one embodiment of this disclosure, a spring 31 is provided between the coupling 3 and the reduction gear 4. The spring 31 is configured to push the coupling 3 from a second position to a first position when the roller brush assembly is separated from the coupling 3 under its own elastic force. That is, when the roller brush assembly is separated from the coupling 3, the spring 31 can use its own elastic force to push the coupling 3 from the second position to the first position, so that the first axial sealing part 111 of the first seal 11 abuts and fits against the skirt of the coupling 3 to completely seal the first opening 32 and prevent external water from entering the second receiving cavity 14 and the first receiving cavity 13.

[0060] like Figure 3 As shown, in one embodiment of this disclosure, the housing 1 is provided with a first receiving cavity 13 and a second receiving cavity 14 located at the second end of the first receiving cavity 13. The drive unit 2 is disposed in the second receiving cavity 14, and the deceleration part 4 is disposed in the first receiving cavity 13. The first receiving cavity 13 and the second receiving cavity 14 are separated from each other by a blocking wall, and the blocking wall is provided with an opening for the transmission shaft of the drive unit 2 to pass through.

[0061] like Figure 3As shown, in one embodiment of this disclosure, the drive unit 2 includes a rotor, a stator, and a magnet ring 22 arranged sequentially from the inside out. The magnet ring 22 can effectively prevent magnetic leakage in the drive unit 2, protect the drive unit 2 from external interference, and improve the overall performance of the drive unit 2. Since the outer peripheral surface of the magnet ring 22 is attached to the inner wall of the housing 1, it can effectively save the overall volume of the drive unit 2, thereby improving the overall space utilization of the drive unit 2. Under the condition that the size of the housing 1 remains unchanged, the maximum usable volume of the drive unit 2 within the housing 1 is increased. It should be noted that the drive unit 2 is different from conventional motors. Instead of setting an additional outer shell to cover the rotor and stator inside the housing 1, the housing 1 directly serves as the outer shell of the drive unit 2, covering the rotor and stator, which effectively improves the overall space utilization of the drive unit 2.

[0062] It is understood that the motor body includes a motor stator and a motor rotor disposed inside the stator. During the operation of the drive unit 2, the motor rotor can rotate relative to the motor stator, thereby driving the rotating shaft 23 inside the motor rotor to rotate. When the rotating shaft 23 rotates, it can drive the coupling 3 to rotate through the reduction unit 4, thereby driving the roller brush assembly to rotate.

[0063] Specifically, in one embodiment of this disclosure, the housing 1 is made of plastic, the magnetic protective ring 22 is fixedly installed inside the housing 1, and the stator is fitted to the inside of the magnetic protective ring 22. Because the housing 1 is made of plastic, its upper temperature limit is higher than that of a housing made of metal. Therefore, the housing 1 of the cleaning device of this disclosure can withstand higher temperatures during operation, thereby improving operational reliability.

[0064] Since the magnetic ring 22 is fixedly installed inside the housing 1 and the stator is fitted to the inside of the magnetic ring 22, the entire drive unit 2 can effectively utilize the space inside the housing 1. There will be no gap between the magnetic ring 22 and the housing 1, and the gap between the stator and the magnetic ring 22 is effectively avoided, thereby effectively increasing the available space of the stator and rotor.

[0065] In another embodiment of this disclosure, the housing 1 is made of plastic and is integrally formed with the magnetic ring 22 insert through injection molding, with the stator fitted to the inner side of the magnetic ring 22. As mentioned above, the plastic housing 1 can withstand higher temperatures during operation, thereby improving operational reliability. Furthermore, since the housing 1 and the magnetic ring 22 are formed as a single unit through insert injection molding, the overall weight of the plastic housing 1 and the magnetic ring 22 can be effectively reduced, the overall bonding strength between the housing 1 and the magnetic ring 22 can be improved, and the installation structure can be simplified.

[0066] like Figure 2 and Figure 3As shown, in one embodiment of this disclosure, the drive assembly further includes a support portion 5 and a fixed arm. One end of the support portion 5 is fixedly connected to the housing 1, and the other end is connected to the fixed arm. The support portion 5 supports rotation through a bearing and can form an axially penetrating opening, thereby allowing airflow to flow inside the housing 1 of this disclosure. The fixed arm is used to install the drive assembly of this disclosure onto the main body of the device, so as to realize the installation and fixation of the drive assembly of this disclosure.

[0067] like Figure 2 and Figure 3 As shown, in one embodiment of this disclosure, a second sealing element 15 made of flexible material is sandwiched between the housing 1 and the support portion 5. The second sealing element 15 can fill the gap between the housing 1 and the support portion 5, preventing external water from entering the housing 1 from the gap between the support portion 5 and the housing 1, and ensuring the normal operation of the drive unit 2 and the reduction unit 4.

[0068] like Figure 6 As shown, in one embodiment of this disclosure, a second limiting protrusion 52 is provided on the outer peripheral surface of the bracket portion 5, and a second through hole 153 is provided on the second sealing member 15. The second sealing member 15 is configured to be attached to the outer peripheral surface of the bracket portion 5, and the second limiting protrusion 52 passes outward through the second through hole 153 to limit the installation of the second sealing member 15.

[0069] The drive assembly also includes a second mounting member 16, which is configured to be fixedly mounted on a second limiting protrusion 52 on the outer peripheral surface of the bracket portion 5, so that the housing 1 is fixed to the bracket portion 5 and abuts against the second limiting protrusion 52, and the second sealing member 15 is fixedly disposed between the outer peripheral surface of the bracket portion 5 and the inner peripheral surface of the second end of the housing 1.

[0070] Thus, during the installation of the drive assembly disclosed herein, the second through hole 153 of the second seal 15 is first fitted onto the second limiting protrusion 52 on the outer peripheral surface of the bracket portion 5. Then, the second mounting member 16 is fixedly installed onto the second limiting protrusion 52 on the outer peripheral surface of the bracket portion 5, so that the housing 1 and the second limiting protrusion 52 of the bracket portion 5 are in contact. The second seal 15 is fixedly positioned between the outer peripheral surface of the bracket portion 5 and the inner peripheral surface of the second end of the housing 1. This not only ensures that the housing 1 and the second limiting protrusion 52 of the bracket portion 5 are in contact, preventing gaps between them, but also allows the second mounting member 16 to press the second seal 15 into the gap between the outer peripheral surface of the bracket portion 5 and the inner peripheral surface of the second end of the housing 1. The second mounting member 16 can be a screw or other mounting parts, and is not limited herein.

[0071] Similarly, such as Figure 6As shown, in one embodiment of this disclosure, the second seal 15 includes an axially extending annular second circumferential sealing portion 151 and a plurality of circumferentially arranged second circumferential through-hole sealing portions 152 extending further from the second circumferential annular sealing portion 151, and a second through-hole 153 is formed in the second circumferential through-hole sealing portion 152.

[0072] Specifically, the number of second limiting protrusions 52 and second circumferential through-hole sealing portions 152 are the same, and their positions correspond to each other. The second circumferential annular sealing portion 151 is annular in shape and integrally connected with each of the second circumferential through-hole sealing portions 152. The second circumferential through-hole sealing portion 152 is used to seal the gap between the housing 1 and the bracket portion 5 around the second limiting protrusion 52, and the second circumferential annular sealing portion 151 is used to seal the gap at the second end of the housing 1 and the bracket portion 5.

[0073] like Figure 4 As shown, in one embodiment of this disclosure, the drive assembly further includes a first impeller 81 and a second impeller 82 disposed in the second receiving cavity 14. The first impeller 81 and the second impeller 82 are connected to the drive unit 2 and are configured to guide the external airflow through the support portion 5 and the drive unit 2 in sequence when the drive unit 2 rotates, and flow out from the first end of the housing 1.

[0074] During the operation of the cleaning device disclosed herein, the drive unit 2 can drive the first impeller 81 and the second impeller 82 to rotate. When the first impeller 81 and the second impeller 82 rotate, they can guide the external airflow from the second opening 51 of the support part 5 into the drive unit 2, take away the heat in the drive unit 2, flow into the first receiving cavity 13, and finally flow out from the first opening 32 between the coupling 3 and the housing 1.

[0075] Furthermore, such as Figure 4 As shown, in one embodiment of this disclosure, the first impeller 81 and the second impeller 82 are respectively disposed at both ends of the axial direction of the drive unit 2; this ensures that the airflow can flow uniformly within the second receiving cavity 14, thereby increasing the airflow rate, improving heat dissipation efficiency, reducing the temperature of the drive unit 2 during operation, and effectively protecting the drive unit 2 and the housing 1. To further improve the airflow rate, both the first impeller 81 and the second impeller 82 can be axial flow fans.

[0076] It is understandable that, such as Figure 2 and Figure 3 As shown, in one embodiment of this disclosure, the drive assembly further includes a sliding bearing 7, which is sleeved on the bracket portion 5 and used to cooperate with the roller brush assembly, thereby enabling the roller brush assembly to rotate relative to the drive assembly. Figure 3As shown, one end of the sliding bearing 7 in the axial direction cooperates with the shock-absorbing pad 61 and the extension 6 to reduce the vibration generated during the rotation of the roller brush assembly, while the other end cooperates with the bracket portion 5. In one embodiment of this disclosure, the sliding bearing 7 is a plastic sliding bearing 7. Compared with the metal sliding bearing 7 in existing cleaning devices, the plastic sliding bearing 7 can effectively avoid rusting and extend its service life.

[0077] like Figures 7 to 9 As shown, in one embodiment of this disclosure, the deceleration unit 4 includes a deceleration housing 41, and a first sealing member 11 covers the end face of the housing 1 and the end face of the deceleration housing 41. In this way, the end faces of both the housing 1 and the deceleration unit 4 can be covered by the first sealing member 11, thereby sealing the gap between them and preventing water from entering through the gap between the housing 1 and the deceleration housing 41.

[0078] The inner wall of the reduction housing 41, adjacent to the skirt of the coupling 3, extends inward to form a receiving groove 412 facing the first end. In the axial direction, the skirt of the coupling 3 covers at least part of the receiving groove 412. The receiving groove 412 is an annular groove, and its opening faces the coupling 3. The inner wall of the receiving groove 412 is a flange extending from the bottom of the groove towards the coupling 3. The flange and the inner wall of the reduction housing 41 form the inner and outer annular walls of the receiving groove 412, and the axial extension length of the flange does not exceed the leading edge of the outer peripheral wall of the reduction housing 41. The airflow generated by the first impeller 81 and the second impeller 82 is configured to pass through the receiving groove 412 and then be discharged to the first end of the housing 1.

[0079] The first end of the reduction housing 41 has a receiving groove 412 facing the first end on its circumferential inner edge. When external water droplets enter from the first opening 32 at the first end of the housing 1, they will accumulate in the receiving groove 412 on the reduction housing 41. Furthermore, during the operation of the cleaning device disclosed herein, an air outlet gap is formed between the flange of the receiving groove 412 and the skirt of the coupling 3. This ensures that when water droplets in the receiving groove 412 flow towards the air outlet gap, the airflow generated by the first impeller 81 and the second impeller 82 can maintain the airflow direction discharged from the air outlet gap. This ensures that even if water droplets flow towards the air outlet gap, they can be blown away from the air outlet gap by the airflow generated by the first impeller 81 and the second impeller 82, allowing the water droplets remaining in the receiving groove 412 to be discharged outside the housing 1. This prevents external water droplets from entering the drive unit 2 and causing the drive unit 2 to malfunction.

[0080] Application scenarios

[0081] This disclosure provides a cleaning device comprising a main body, a drive assembly, and a roller brush assembly. The drive assembly is mounted on the main body. The roller of the roller brush assembly is configured to be sleeved on the outside of the housing 1 of the drive assembly and is configured to be drively connected to the output end of the drive unit 2 of the drive assembly. Thus, the drive assembly can drive the roller brush assembly to rotate, thereby cleaning the working surface.

[0082] It is understood that the main body of the device can be the floor brush assembly of the cleaning device, which is pivotally connected to the body of the cleaning device. A handle for user operation can also be provided on the top of the body, without any restrictions.

[0083] Specifically, the drive assembly includes a housing 1, a drive unit 2, a coupling 3, and a first seal 11. The housing 1 is used to house the drive unit 2 and other structures to protect the drive unit 2 and other mechanisms. The coupling 3 is connected to the drive unit 2 for transmission. The drive unit 2 can drive the coupling 3 to rotate, thereby driving the roller brush assembly to rotate, thus cleaning the working surface.

[0084] The drive assembly also includes a reduction gear 4 located within the housing 1, which is axially connected to the coupling 3. The reduction gear 4 can be disposed between the coupling 3 and the drive unit 2, and the coupling 3 is configured to be driveably connected to the drive unit 2 via the reduction gear 4. That is, during the operation of the drive assembly of this disclosure, the drive unit 2 can drive the coupling 3 to rotate via the reduction gear 4. The reduction gear 4 is used to reduce the output speed of the drive unit 2 and increase the output torque of the drive unit 2.

[0085] The coupling 3 is disposed at the first end of the housing 1 and is configured to move axially between a first position and a second position to close or open the first end of the housing 1. A first seal 11 is also disposed at the first end of the housing 1. The first seal 11 includes an integrally formed first axial seal portion 111 and a first circumferential seal portion 112. The first seal 11 is constructed of a flexible material and is configured such that when the coupling 3 is in the first position, the first axial seal portion 111 abuts against and fits against the coupling 3 to close the first end; and when in the second position, the coupling 3 moves axially away from the first axial seal portion 111 to open the first end. The first circumferential seal portion 111 is located within the gap between the housing 1 and the reduction gear 4.

[0086] In the working state of the cleaning device disclosed herein, that is, when the roller of the roller brush assembly is sleeved on the housing 1 of the drive assembly, the coupling 3 is in the second position, so as to move away from the first axial sealing part 111 of the first seal 11 axially, thereby opening the first end of the housing 1 to facilitate internal heat dissipation when the drive assembly is working.

[0087] When the cleaning device disclosed herein needs to be cleaned, after the roller brush assembly is disassembled from the housing 1 of the drive assembly, the coupling 3 is in the first position, and the first axial sealing portion 111 of the first seal 11 abuts and fits against the coupling 3, thereby sealing the first end to prevent the exposed drive assembly from being exposed to water due to the opening of the first end of the housing 1. At the same time, the first circumferential sealing portion 112 ensures the gap between the sealing deceleration portion 4 and the housing 1, achieving bidirectional sealing in both the axial and circumferential directions. The integrated design of the first axial sealing portion 111 and the first circumferential sealing portion 112 facilitates assembly.

[0088] The first axial sealing part 111 is generally annular and extends radially on the longitudinal section of the drive assembly. When the coupling 3 is in the first position, the first axial sealing part 111 can abut and fit against the circumferential edges of the coupling 3, which can completely seal the first opening 32, prevent gaps from appearing between the coupling 3 and the first axial sealing part 111, prevent external water from entering the housing 1, and thus prevent water from entering the drive unit 2 inside the housing 1, ensuring the normal operation of the drive unit 2, extending the service life of the drive unit 2, and the flatness requirements and installation accuracy requirements of the first sealing part 11 are also relatively low.

[0089] The various embodiments of this disclosure have been described above. These descriptions are exemplary and not exhaustive, and are not limited to the disclosed embodiments. Many modifications and variations will be apparent to those skilled in the art without departing from the scope and spirit of the described embodiments. The terminology used herein is chosen to best explain the principles, practical application, or technical improvements to the embodiments in the market, or to enable others skilled in the art to understand the embodiments disclosed herein. The scope of this disclosure is defined by the appended claims.

Claims

1. A cleaning device, comprising: Main body of the device; A drive assembly, which is disposed on the main body of the device; A roller brush assembly is configured to be sleeved on the outside of the housing (1) of the drive assembly and is configured to be drively connected to the output end of the drive unit (2) of the drive assembly. The drive assembly includes a housing (1), a drive unit (2), and a coupling (3), wherein the coupling (3) is connected to the drive unit (2) in a transmission manner. The coupling (3) is disposed at the first end of the housing (1) and is configured to move axially between a first position and a second position to close or open the first end of the housing (1); The drive assembly includes a reduction gear (4) located inside the housing (1), and the reduction gear (4) is axially connected to the coupling (3); The drive assembly is characterized in that it further includes a first seal (11) disposed at the first end of the housing (1). The first seal (11) includes an integrally formed first axial seal (111) and a first circumferential seal (112), and is configured such that when the coupling (3) is in a first position, the first axial seal (111) abuts and fits against the coupling (3) to close the first end, and when it is in a second position, the coupling (3) moves axially away from the first axial seal (111) to open the first end; the first circumferential seal (112) is located in the gap between the housing (1) and the deceleration part (4).

2. The cleaning device according to claim 1, characterized in that, The deceleration unit (4) includes a deceleration housing (41), and the first sealing member (11) covers the end face of the housing (1) and the end face of the deceleration housing (41).

3. The cleaning device according to claim 1, characterized in that, The first seal (11) and the housing (1) form a continuous outer surface.

4. The cleaning device according to claim 1, characterized in that, The first axial sealing part (111) is generally annular and extends radially, and the deceleration part (4) is disposed between the coupling (3) and the drive unit (2).

5. The cleaning device according to claim 4, characterized in that, A first limiting protrusion (411) is provided on the outer peripheral surface of the deceleration part (4), and a first through hole (1123) is provided on the first circumferential sealing part (112). The first circumferential sealing part (112) is attached to the outer peripheral surface of the deceleration part (4), and the first limiting protrusion (411) passes through the first through hole (1123).

6. The cleaning device according to claim 5, characterized in that, The drive assembly further includes a first mounting member (12) for fixing the housing (1) to the deceleration unit (4), the first limiting protrusion (411) having a mounting hole, and the first mounting member (12) being configured to be fixedly installed in the mounting hole of the first limiting protrusion (411).

7. The cleaning device according to claim 5, characterized in that, The first circumferential sealing portion (112) includes an annular first circumferential sealing portion (1121) extending axially and a plurality of first circumferential through-hole sealing portions (1122) further extending axially from the first circumferential annular sealing portion (1121) and arranged in a circular manner. The first through-hole (1123) is disposed in the first circumferential through-hole sealing portion (1122).

8. The cleaning device according to claim 1, characterized in that, The drive unit (2) includes a rotor, a stator and a magnet ring (22) arranged sequentially from the inside to the outside; the housing (1) is made of plastic, the magnet ring (22) is fixedly installed on the inside of the housing (1), and the stator is fitted to the inside of the magnet ring (22).

9. The cleaning device according to claim 1, characterized in that, The drive unit (2) includes a rotor, a stator and a magnet ring (22) arranged sequentially from the inside to the outside; the housing (1) is made of plastic and is integrally formed with the magnet ring (22) insert by injection molding, and the stator is set to fit the inner side of the magnet ring (22).

10. The cleaning device according to claim 1, characterized in that, The drive assembly also includes a bracket (5) and a fixing arm. One end of the bracket (5) is fixedly connected to the housing (1), and the other end is connected to the fixing arm. A second sealing element (15) made of flexible material is sandwiched between the housing (1) and the bracket (5). A second limiting protrusion (52) is provided on the outer peripheral surface of the bracket part (5), and a second through hole (153) is provided on the second sealing member (15). The second sealing member (15) is constructed to be attached to the outer peripheral surface of the bracket part (5), and the second limiting protrusion (52) passes through the second through hole (153).

11. The cleaning device according to claim 10, characterized in that, The second seal (15) includes a second circumferential annular sealing portion (151) extending axially in an annular shape and a plurality of second circumferential through-hole sealing portions (152) further extending from the second circumferential annular sealing portion (151) and arranged in a circumferential manner, wherein the second through-hole (153) is disposed in the second circumferential through-hole sealing portion (152).

12. The cleaning device according to claim 1, characterized in that, The drive assembly further includes a first impeller (81) and a second impeller (82) that are connected to the drive unit (2) in a transmission manner. The first impeller (81) and the second impeller (82) are respectively disposed at both ends of the drive unit (2) and located in the second receiving cavity (14) formed by the housing (1).

13. The cleaning device according to claim 2, characterized in that, The inner wall surface of the reduction housing (41) adjacent to the skirt of the coupling (3) extends further inward to form a receiving groove (412) facing the first end; in the axial direction, the skirt of the coupling (3) covers at least part of the receiving groove (412); the receiving groove (412) is constructed as an annular groove, and the opening of the receiving groove (412) faces the coupling (3).

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