A cleaning apparatus

Abstract

The present disclosure relates to a cleaning device, comprising: a machine body, a cleaning device and a driving device, the cleaning device being configured to rotate relative to the machine body to clean a cleaning surface; the cleaning device having an inner cavity; the driving device being connected to the machine body and having a heat dissipation air duct; the driving device being configured to extend into the inner cavity of the cleaning device and be in driving cooperation with the cleaning device; external airflow being configured to enter the heat dissipation air duct from a connection end of the driving device and the machine body and enter the inner cavity of the cleaning device through the heat dissipation air duct. The cleaning device of the present disclosure can use the airflow after heat dissipation to dry the inside of the cleaning device, avoiding the breeding of bacteria.

Description

Technical Field

[0001] This disclosure relates to the field of cleaning technology, and in particular to a cleaning device. Background Technology

[0002] With the development of social productivity, people's living standards have also improved. With their material needs met, people have begun to use various tools to reduce labor and improve their quality of life, leading to the emergence of household cleaning equipment.

[0003] Taking cleaning products containing roller brushes as an example, the drive motor is located inside the cleaning equipment. Therefore, the cleaning roller brush and the drive motor need to be connected together through a transmission device. The transmission device occupies the lateral dimension of the cleaning equipment, reducing the cleaning surface area. In addition, because the roller has an inner cavity, some wastewater inevitably enters the inner cavity of the roller when cleaning the floor. This can easily breed bacteria and produce odors. Summary of the Invention

[0004] This disclosure provides a cleaning device to address the problems existing in the prior art.

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

[0006] Organism;

[0007] A cleaning device configured to rotate relative to the body to clean a cleaning surface; the cleaning device has an inner cavity;

[0008] A drive unit is connected to the body and has a heat dissipation duct; the drive unit is configured to extend into the inner cavity of the cleaning device and drively engage with the cleaning device.

[0009] External airflow is configured to enter the heat dissipation duct from the connection end between the drive unit and the body, and then enter the inner cavity of the cleaning device through the heat dissipation duct.

[0010] In one embodiment of this disclosure, the cleaning device is a cleaning roller, and the machine body is provided with a first support arm and a second support arm arranged opposite to each other. The driving device is connected to the second support arm. One end of the cleaning roller is rotatably connected to the first support arm. The driving device extends from the other end of the cleaning roller into the inner cavity of the cleaning roller and is drivenly connected to the cleaning roller.

[0011] In one embodiment of this disclosure, the inner cavity extends through both opposite ends of the cleaning roller, and an air outlet is formed at one end of the cleaning roller adjacent to the first support arm.

[0012] In one embodiment of this disclosure, the inner cavity extends through both opposite ends of the cleaning roller, and there is a gap between the end of the cleaning roller and the first support arm to form an air outlet.

[0013] In one embodiment of this disclosure, the driving device is a motor assembly, the connecting end of the motor assembly is fixedly connected to the second support arm, and the output end of the motor assembly is drivenly connected to the inner wall of the cleaning roller.

[0014] In one embodiment of this disclosure, the motor assembly includes a motor housing and an output shaft extending from the motor housing; the heat dissipation duct includes a heat dissipation duct inlet disposed at the connecting end of the motor housing, and a connecting sleeve is disposed on the second support arm, the connecting sleeve being connected to the heat dissipation duct inlet of the motor housing; external airflow is configured to enter the heat dissipation duct inlet of the motor housing through the connecting sleeve.

[0015] In one embodiment of this disclosure, a connecting ventilation duct is provided on the second support arm. One end of the connecting ventilation duct is connected to the connecting sleeve, and the other end extends along the extension direction of the second support arm, forming a connecting ventilation duct inlet on the side wall of the second support arm.

[0016] In one embodiment of this disclosure, the thickness of the connecting ventilation duct is at least 3 mm, and the connecting ventilation duct is configured to allow the insertion of wiring for electrical connection of the motor assembly.

[0017] In one embodiment of this disclosure, the side facing the user is referred to as the front side, and the side away from the user is referred to as the rear side. The first arm and the second arm are configured to extend rearward from the edge of the body, respectively. The thickness of the first arm and the second arm is between 4 and 6 mm.

[0018] In one embodiment of this disclosure, the motor assembly includes a motor cover fitted over the outside of the motor housing. The motor cover is configured to have a shape adapted to the motor housing. One end of the motor cover is fixedly connected to the output shaft of the motor assembly, and the other end is rotatably connected to the motor housing.

[0019] In one embodiment of this disclosure, the motor assembly further includes a decorative sleeve rotatably connected to the connection end of the motor housing via a bearing, and the end of the motor cover extends to fit against the decorative sleeve.

[0020] In one embodiment of this disclosure, a transmission base is provided on the inner wall of the cleaning roller, the transmission base having a transmission cavity facing the motor assembly, and a transmission head is formed at one end of the motor cover adjacent to the output shaft; the transmission head is configured to detachably engage with the transmission cavity by means of a plug-in connection.

[0021] In one embodiment of this disclosure, the cleaning roller is rotatably connected to the first support arm in a detachable manner; or, the cleaning roller is rotatably connected to the first support arm, and the first support arm is detachably connected to the machine body.

[0022] In one embodiment of this disclosure, the transmission base is provided with a through hole for airflow.

[0023] In one embodiment of this disclosure, the heat dissipation duct includes a first heat dissipation duct disposed inside the motor housing and a second heat dissipation duct disposed between the motor housing and the motor cover. The motor housing is provided with a connecting hole connecting the first heat dissipation duct and the second heat dissipation duct. The motor cover is provided with a heat dissipation duct outlet communicating with the second heat dissipation duct at a position near the output end.

[0024] The cleaning device disclosed herein eliminates the need for an additional transmission device by placing the drive unit within the inner cavity of the cleaning device, thus avoiding the transmission device occupying the lateral space of the cleaning device. Furthermore, a heat dissipation duct is incorporated within the drive unit, allowing external airflow to not only dissipate heat from the cleaning device but also to dry its interior, preventing wastewater from accumulating in the inner cavity for extended periods, thus preventing bacterial growth and odor formation.

[0025] 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

[0026] 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.

[0027] Figure 1 This is a schematic diagram of the structure of the cleaning equipment disclosed herein;

[0028] Figure 2 This is another structural schematic diagram of the cleaning equipment disclosed herein;

[0029] Figure 3 This is a cross-sectional view of the cleaning equipment disclosed herein;

[0030] Figure 4 This is a cross-sectional view of the cleaning equipment drive device and the cleaning equipment disclosed herein;

[0031] Figure 5 yes Figure 3 A magnified view of a portion of the motor assembly;

[0032] Figure 6 yes Figure 4 A magnified view of a portion of the motor assembly;

[0033] Figure 7 This is another cross-sectional view of the cleaning equipment disclosed herein;

[0034] Figure 8 This is a cross-sectional view of the second arm in the cleaning equipment disclosed herein;

[0035] Figure 9 This is a schematic diagram of the structure of the cleaning equipment disclosed herein.

[0036] Figure 10 This is an exploded view of the second arm and motor assembly in an embodiment of this disclosure.

[0037] Figure label:

[0038] 1. Body, 11. First arm, 12. Second arm, 121. Connecting sleeve, 122. Connecting ventilation duct, 1200. Main body, 1201. Cover plate, 1221. Connecting ventilation duct inlet, 13. Buffer, 2. Cleaning device, 21. Inner cavity, 22. Transmission base, 221. Transmission chamber, 222. Through hole, 23. Cooling fan, 3. Drive device, 31. Motor housing, 311. Connecting hole, 32. Output shaft, 321. Transmission head, 33. Motor cover, 34. Decorative sleeve, 35. Bearing, 4. Cooling duct, 41. Cooling duct inlet, 42. Cooling duct outlet, 43. First cooling duct, 44. Second cooling duct, 45. Third cooling duct, 450. Cooling outlet, 5. Air outlet. Detailed Implementation

[0039] 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 otherwise specifically stated, 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.

[0040] The following description of at least one exemplary embodiment is merely illustrative and is in no way intended to limit this disclosure or its application or use.

[0041] Techniques, methods, and equipment known to those skilled in the art may not be discussed in detail, but where appropriate, such techniques, methods, and equipment should be considered part of the specification.

[0042] In all the 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.

[0043] It should be noted that similar labels and letters in the following figures indicate similar items; therefore, once an item is defined in one figure, it does not need to be discussed further in subsequent figures.

[0044] The cleaning equipment disclosed herein can be any cleaning equipment well known to those skilled in the art, such as a sweeping robot, a floor scrubbing robot, or a handheld floor scrubber. It includes a body, a cleaning device mounted on the body for cleaning the surface, and a drive device that is connected to and drives the cleaning device. The cleaning device has an inner cavity. One end of the drive device is fixedly connected to the body, and the other end extends into the inner cavity of the cleaning device and is connected to it, thereby enabling it to move the cleaning device.

[0045] The drive unit is equipped with a heat dissipation duct, which can draw in external airflow to dissipate heat from the inside of the drive unit. The external airflow enters the heat dissipation duct from the connection end between the drive unit and the machine body. After the airflow dissipates heat from the drive unit, it enters the inner cavity of the cleaning device. This allows the heat dissipation airflow to dry the inner cavity of the cleaning device, preventing sewage from accumulating in the inner cavity of the cleaning device and causing bacteria growth and odor.

[0046] The cleaning device disclosed herein expands the cleaning surface by placing the drive unit inside the cleaning device's internal cavity, eliminating the need for an additional transmission device between the cleaning device and the drive unit. Simultaneously, a heat dissipation duct is provided in the drive unit, allowing external airflow to cool the cleaning device; the cooled airflow also dries the internal cavity of the cleaning device.

[0047] In one embodiment of this disclosure, such as Figure 1 , Figure 2 and Figure 3 As shown, the cleaning equipment includes a body 1, which carries various components of the cleaning equipment, such as batteries, dust collection boxes, wastewater tanks, and other components well-known to those skilled in the art. The specific components depend on the structure and function of the cleaning equipment and are not limited herein. A cleaning device is provided on the body 1 for cleaning the surface to be cleaned. The cleaning device has an inner cavity 21, in which a drive device for driving the cleaning device is connected. One end of the drive device is connected to the body 1, and the other end extends into the inner cavity 21 of the cleaning device. The drive device directly contacts the cleaning device for transmission, without the need for additional transmission components. The transmission connection can be a snap-fit, bevel gear connection, or other transmission connection methods well-known to those skilled in the art, and will not be described in detail here.

[0048] A heat dissipation duct 4 is provided in the drive device. When the drive device is working, the principle of negative pressure can be used to draw airflow from the outside through the heat dissipation duct 4 to dissipate heat from the internal structure of the drive device. After the outside airflow dissipates heat from the drive device, its temperature rises. The heated airflow flows out from the outlet of the heat dissipation duct 4 and enters the inner cavity 21 of the cleaning device to dry the inner cavity of the cleaning device. Finally, it flows out from the inner cavity 21 of the cleaning device.

[0049] The cleaning apparatus disclosed herein can employ a cleaning function structure well known to those skilled in the art, such as a wiping disc structure, wherein the rotation axis of the wiping disc structure is perpendicular to the cleaning surface, so that the cleaning surface, such as a floor, can be cleaned when rotating along its own axis. Of course, in addition to the wiping disc structure, other structures can be employed by those skilled in the art.

[0050] In one specific embodiment of this disclosure, such as Figure 1 As shown, the cleaning device can be a cylindrical cleaning roller 2, with its inner cavity extending through its opposite ends. Cleaning cotton, bristles, or other cleaning components can be provided on the outer surface of the cleaning roller 2.

[0051] One end of the cleaning roller 2 is rotatably connected to the machine body 1, allowing the machine body 1 to provide support for one end of the cleaning roller 2. One end of the drive device is connected to the machine body 1, and the other end extends into the inner cavity 21 of the cleaning roller 2, where it is connected to the cleaning roller 2 in a transmission manner. This allows the drive device to provide support for the cleaning roller 2. Furthermore, by rotating the output end of the drive device, the cleaning roller 2 can be driven to rotate relative to the machine body 1 to complete the cleaning of the surface.

[0052] In one embodiment of this disclosure, such as Figure 2 , Figure 3 and Figure 8 As shown, two opposing support arms are also provided on the body 1, connecting the drive device and the cleaning roller 2 to the body 1 via the two support arms. The two support arms are respectively referred to as the first support arm 11 and the second support arm 12. In this embodiment, the first support arm 11 and the second support arm 12 are located on opposite sides of the body 1. One end of the first support arm 11 and the second support arm 12 are respectively connected to the body 1, and the other end extends outwards, thus forming an approximately U-shaped installation space between the first support arm 11, the second support arm 12, and the body 1. The cleaning roller 2 and other components can be installed within this installation space. Figure 8As shown, buffer members 13 are provided at the free ends of the first arm 11 and the second arm 12, and the buffer members 13 cover the outer surfaces of the first arm 11 and the second arm 12. During the cleaning process, the cleaning equipment may come into contact with hard objects such as furniture. The buffer members 13 can prevent the cleaning equipment from being damaged when it comes into contact with hard objects. The buffer members 13 can be made of materials known to those skilled in the art, such as rubber and foam, and will not be described in detail here.

[0053] In one embodiment of this disclosure, the side facing the user is referred to as the front side, and the side away from the user is referred to as the rear side. In an embodiment where the cleaning device of this disclosure is a handheld mop, the user needs to hold the cleaning device to clean the floor, as shown in the reference. Figure 9 The cleaning device is a floor brush. A roller is installed on the side of the floor brush facing the user, assisting the brush in moving across the floor. A cleaning roller 2 is installed on the side of the floor brush away from the user. That is, the cleaning roller 2 is located at the rear of the floor brush, and the roller is located at the front of the floor brush.

[0054] The first arm 11 and the second arm 12 are located on the edges of the body 1 of the floor brush on both sides, extending towards the rear of the body 1, forming a U-shaped mounting space with the body 1, in which the cleaning roller 2 can be installed. (Reference) Figure 9 In the view direction, the first arm 11 and the second arm 12 are located on the left and right sides of the body 1, respectively, and extend from the left and right sides of the body 1 towards the rear of the body. Figure 9 (As shown below) Extending outwards, the free ends of the two support arms are used to install the cleaning roller 2.

[0055] The first arm 11 and the second arm 12 can be fixedly installed on both sides of the body 1, or they can be installed in a detachable manner. (Reference) Figure 9 For example, a mounting groove structure can be provided on the side wall of the body 1, and a snap-fit ​​structure that mates with the mounting groove structure can be provided on the corresponding end faces of the two support arms to install the two support arms on the side wall of the body. Alternatively, a groove can be provided on the side wall of the body 1, so that at least a portion of the side wall of the first support arm 11 and the second support arm 12 is embedded in the groove, thereby preventing the first support arm 11 and the second support arm 12 from occupying the lateral dimension of the body 1. The structure of the second support arm 12 is similar to that of the first support arm 11, and one end of the second support arm 12 can be fixed to the body 1 by screws or other means known to those skilled in the art. Figure 8 A schematic diagram of the structure of the second arm 12 is shown. The end face of the second arm 12 that cooperates with the body 1 is flat, or it is constructed to fit the side wall of the body 1. Alternatively, a groove is provided at the side wall of the body 1, so that at least a portion of the side wall of the second arm 12 can be embedded in the groove, thereby avoiding the second arm 12 occupying the lateral dimension of the body 1.

[0056] In one specific embodiment of this disclosure, the outer end faces of the first arm 11 and the second arm 12 are flush with the end faces of the side walls of the body 1.

[0057] Since the cleaning roller 2 is located between the two support arms, the thickness of the two support arms occupies the cleaning area of ​​the cleaning roller 2. In one embodiment of this disclosure, the thickness of the first support arm 11 and the second support arm 12 is set between 4 and 6 mm. This ensures the structural strength between the two support arms and the cleaning roller 2 while minimizing the lateral space occupied by the two support arms in the body 1. This allows the cleaning roller 2 to provide a larger cleaning surface, enabling the sides of the cleaning roller 2 to be as close as possible to dead corners such as walls and table corners during the cleaning process, thereby increasing the cleaning area of ​​the cleaning device and enabling edge cleaning. In addition, by embedding the drive device inside the cleaning roller 2, and connecting the two sides of the cleaning roller 2 to the floor brush only through the very thin first support arm 11 and the second support arm 12, the cleaning roller 2 can achieve a "double edge cleaning" effect. Compared with the prior art, the solution of this application, due to the use of very thin support arms connecting the two sides of the cleaning roller 2, actually lengthens the cleaning roller 2, increases the single cleaning area and the side cleaning distance of the cleaning roller 2, and effectively solves the problem of corners not being cleaned properly.

[0058] In one embodiment of this disclosure, such as Figure 9 As shown, the first support arm 11 is detachably fixed to the machine body 1. One end of the cleaning roller 2 is detachably rotatably connected to the first support arm 11 via a bearing or a method known to those skilled in the art. For example, a bearing seat can be provided at a corresponding position on the first support arm 11, the inner ring of the bearing can be fixed to the bearing seat, and the outer ring can be fixed to the inner wall of the cleaning roller 2, or fixed to a mounting bracket provided on the inner wall of the cleaning roller 2. This achieves support and relative rotation between the cleaning roller 2 and the first support arm 11. Alternatively, the cleaning roller 2 and the first support arm 11 can be detachably rotatably connected together. While ensuring the rotational engagement of the cleaning roller 2 and the first support arm 11, the cleaning roller 2 can also be removed from the first support arm 11, making it convenient for users to replace or maintain the cleaning roller 2 when it is worn or damaged.

[0059] One end of the drive unit is fixedly connected to the second support arm 12, and the other end passes through the inner cavity of the cleaning roller 2, so that the output end of the drive unit is connected to the cleaning roller 2 for transmission, allowing the drive unit to drive the cleaning roller 2 to rotate. Since the drive unit is located on the second support arm 12, when maintenance of the cleaning equipment is required, such as when the cleaning roller needs to be disassembled, the first support arm 11 can be removed to pull out the cleaning roller 2.

[0060] Specifically, users typically perform disassembly operations facing the rear of the cleaning device, that is, rotating the cleaning device so that one side of the cleaning roller 2 faces the user. In this state, the first arm 11 is located on the right side of the body 1, and the second arm 12 is located on the left side of the body 1. When the user needs to disassemble the cleaning roller 2, since the first arm 11 is located on the right side of the cleaning roller 2, the user can use their right hand to disassemble the first arm 11, which facilitates the user's operation.

[0061] In one embodiment of this disclosure, such as Figure 2 and Figure 3 As shown, the driving device is a motor assembly 3, which is fixedly connected to the second support arm 12 via a connecting end. The fixed connection can be achieved by bolts, or other methods known to those skilled in the art, which will not be elaborated upon here. The motor assembly 3 extends into the cleaning roller 2, entering the inner cavity 21 of the cleaning roller 2 from one end. The output end of the motor assembly 3 engages with the inner wall of the cleaning roller 2, driving the cleaning roller 2 to rotate via the rotation of the driving end, thereby cleaning the cleaning surface.

[0062] In one embodiment of this disclosure, such as Figure 4 and Figure 5 As shown, the motor assembly 3 includes a motor housing 31 and an output shaft 32. Of course, those skilled in the art will recognize that the motor assembly 3 also includes a stator and rotor disposed within the motor housing 31, which will not be specifically described here. The motor housing 31 is constructed to have a shape adapted to the inner cavity 21 of the cleaning roller 2, for example, a cylindrical shape. The output shaft 32 extends from one end of the motor housing 31, and the cleaning roller 2 is driven by the output shaft 32, thereby enabling the output shaft 32 to drive the cleaning roller 2 to rotate for cleaning the cleaning surface.

[0063] The motor assembly 3 is equipped with a heat dissipation duct 4, which allows external airflow to flow into the heat dissipation duct 4 through negative pressure when the motor assembly 3 is working. For details, see [link to relevant documentation]. Figure 7 A cooling fan 23 is installed in the motor housing 31. The cooling fan 23 can be fixed on the rotor of the motor assembly 3, and the rotor provides power for the rotation of the cooling fan 23. The rotation of the cooling fan 23 generates negative pressure, causing external airflow to flow into the cooling duct 4. As the external airflow flows through the cooling duct 4, it can dissipate heat from the internal components of the motor assembly 3, thereby cooling the motor assembly 3 and preventing it from triggering thermal protection due to high temperature during operation.

[0064] A heat dissipation air inlet 41 is provided at one end of the motor housing 31 for connecting the second support arm 12, for reference. Figure 5The heat dissipation air duct inlet 41 is located in the middle of the end of the motor housing 31 and is connected to the heat dissipation air duct 4, which allows external airflow to enter the heat dissipation air duct 4 through the heat dissipation air duct inlet 41.

[0065] In one embodiment of this disclosure, reference is made to Figure 8 A connecting sleeve 121 is provided on the second arm 12. During installation, the motor assembly 3 can be...

[0066] The motor housing 31 is fixed to the second support arm 12 by bolts. After the motor housing 31 is fixedly connected to the second support arm 12, the connecting sleeve 121 will be connected to the heat dissipation air duct inlet 41 on the motor housing 31, so that the external airflow can enter the heat dissipation air duct inlet 41 on the motor housing 31 through the connecting sleeve 121, and then enter the heat dissipation air duct 4 inside the motor assembly 3 to dissipate heat from the motor assembly 3.

[0067] The other end of the connecting sleeve 121 can penetrate through the side wall of the second arm 12 to communicate with the outside. In one embodiment of this disclosure, as... Figure 8 , Figure 10 As shown, a connecting ventilation duct 122 is provided on the second support arm 12. The connecting ventilation duct 122 can extend along the extension direction of the second support arm 12, with one end extending to communicate with the connecting sleeve 121, and the other end forming a connecting ventilation duct inlet 1221 on the second support arm 12. The connecting ventilation duct inlet 1221 can be a hole opened on the second support arm 12, allowing external airflow to directly enter the connecting ventilation duct 122 through the hole, and then enter the heat dissipation air duct inlet 41 through the connecting sleeve 121.

[0068] In one embodiment of this disclosure, to ensure smooth airflow within the connecting ventilation duct 122 and to guarantee effective heat dissipation for the motor assembly 3, the thickness (lateral dimension) of the connecting ventilation duct 122 can be selected to be at least 3 mm. The connecting ventilation duct 122 of this size can also be used to insert wiring connecting the motor assembly 3, providing power to the motor assembly 3. That is, the connecting ventilation duct 122 can both provide airflow and serve as a wiring cavity for the motor assembly 3, maximizing the utilization of the space in the second support arm 12.

[0069] To ensure the strength of the second arm 12, refer to Figure 10The second arm 12 may include a main body 1200 and a cover plate 1201 fitted together with the main body 1200. The main body 1200 may be made of metal to ensure the strength of the second arm 12. The cover plate 1201 may cover the outer side of the main body 1200, forming the aforementioned ventilation channel 122 between the cover plate and the main body 1200. This structure facilitates wiring operations within the ventilation channel 122. The material of the cover is not limited; it may be metal or plastic, and no restriction is placed here.

[0070] In one embodiment of this disclosure, such as Figure 3 and Figure 4 As shown, the motor assembly 3 also includes a motor cover 33, which has a shape similar to that of the motor housing 31, and is cylindrical in shape. The motor cover 33 is located outside the motor housing 31, and the sewage inside the cleaning roller 2 can be blocked by the motor cover 33, preventing it from directly entering the motor housing 31 and affecting the operation of the motor assembly 3.

[0071] In one embodiment of this disclosure, such as Figure 3 and Figure 7 As shown, the heat dissipation duct 4 includes a first heat dissipation duct 43 and a second heat dissipation duct 44, which are connected together. The first heat dissipation duct 43 is located inside the motor housing 31, and its air inlet is the aforementioned heat dissipation duct inlet 41. There is a gap between the motor cover 33 and the motor housing 31, which forms the second heat dissipation duct 44. A connecting hole 311 is provided on the motor housing 31, through which the first heat dissipation duct 43 and the second heat dissipation duct 44 can be connected. A heat dissipation duct outlet 42 is also provided on the motor cover 33. After the external airflow flows out from the first heat dissipation duct 43, it enters the second heat dissipation duct 44, and then enters the inner cavity 21 of the cleaning roller 2, flowing towards the first support arm 11 to dry the space in the inner cavity 21 of the cleaning roller 2 that is not occupied by the motor assembly 3.

[0072] In one embodiment of this disclosure, there may be some gaps between the motor assembly 3 and the inner wall of the cleaning roller 2, and these gaps may contain a small amount of sewage. In this embodiment, after the heat dissipation airflow exits from the second heat dissipation duct 44, most of it flows towards the first support arm 11, and a small portion flows towards the second support arm 12, thereby drying the entire inner cavity 21 of the cleaning roller 2 and ensuring the drying effect of the inner cavity 21.

[0073] In one embodiment of this disclosure, a certain gap needs to be maintained between the motor cover 33 and the motor housing 31 to allow for mutual rotation. Therefore, a second heat dissipation duct 44 flowing towards the first support arm 11 and a third heat dissipation duct 45 flowing towards the second support arm 12 are formed between the motor cover 33 and the motor housing 31. The third heat dissipation duct 45 and the second heat dissipation duct 44 are separated by a connecting hole 311 provided on the motor housing 31. That is, after exiting the connecting hole 311 of the first heat dissipation duct 44, part of the airflow will flow towards the first support arm 11 along the direction of the second heat dissipation duct 44, and part of the airflow will flow towards the second support arm 12 along the direction of the third heat dissipation duct 45.

[0074] In order to allow the airflow in the third heat dissipation duct 45 to flow out, a heat dissipation outlet 450 can be provided on the motor cover 33 at the position corresponding to the third heat dissipation duct 45. After the airflow in the third heat dissipation duct 45 comes out from the heat dissipation outlet 450, most of it will flow in the direction of the second support arm 12, that is, in the direction of the motor assembly connection end, and flow out from the corresponding end of the cleaning roller 2, thereby achieving the purpose of drying the cleaning roller 2 on this side.

[0075] refer to Figure 2 The heat dissipation air outlet 42 can be located at one end of the motor cover 33 near the output shaft 32 and surrounds the circumference of the motor cover 33. By providing the first heat dissipation air outlet 43 and the second heat dissipation air outlet 44, this disclosure can prevent sewage in the cleaning roller 2 from entering the motor housing 31 through the heat dissipation air outlet 42.

[0076] The motor cover 33 of this disclosure can be fixedly connected to the motor housing 31. In one embodiment of this disclosure, the motor cover 33 can be rotatably connected to the motor housing 31, so that the motor cover 33 can rotate relative to the motor housing 31. Specifically, one end of the motor cover 33 can be fixedly connected to the output shaft 32, and the other end can be rotatably connected to the motor housing 31.

[0077] refer to Figure 4 , Figure 5 , Figure 6 The motor housing 33 may have a drive head 321 formed at one end adjacent to the output shaft 32. The drive head 321 may be in the form of a frustum or other shapes known to those skilled in the art. The drive head 321 and the output shaft 32 may be fixedly connected together by bolts or other means known to those skilled in the art, thereby driving the motor housing 33 to rotate by rotating the output shaft 32.

[0078] A transmission base 22 is provided on the inner wall of the cleaning roller 2, for reference. Figure 3 , Figure 5A transmission cavity 221 is provided on one end of the transmission base 22 facing the motor assembly 3. The transmission head 321 of the motor cover 33 can be inserted into the transmission cavity 221, so that the transmission head 321 can drive the transmission base 22 to rotate. That is, the transmission cavity 221 is constructed to be compatible with the shape and size of the transmission head 321. Figure 4 This is a cross-sectional view showing the transmission cavity 221 detached from the transmission head 321. When installing the cleaning roller 2, it can be held and moved towards the motor assembly 3, allowing the motor assembly 3 to pass into the inner cavity of the cleaning roller 2, and the transmission head 321 of the motor assembly 3 to be inserted into the transmission cavity 221 of the cleaning roller 2, thus establishing a transmission engagement between the transmission cavity 221 and the transmission head 321. When disassembly is required, simply move the cleaning roller 2 away from the motor assembly 3 to detach it. (Refer to...) Figure 4 , Figure 9 .

[0079] The transmission cavity 221 and the transmission head 321 can be connected by means of protrusions, grooves, etc., to avoid slippage between them. In one embodiment of this disclosure, a spiral protrusion structure can be provided on the transmission head 321. After the spiral protrusion structure cooperates with the corresponding structure on the inner wall of the transmission cavity 221, the transmission cavity 221 and the transmission head 321 can be driven together. The transmission head 321 of the motor cover 33 is assembled in the transmission cavity 221. Under the clamping action of the first support arm 11 and the second support arm 12, the two ends of the cleaning roller 2 can be prevented from moving axially, ensuring the stability of the cleaning roller 2 during rotation.

[0080] In one embodiment of this disclosure, such as Figure 3 and Figure 4 As shown, a through hole 222 is provided on the transmission base 22, which allows the airflow from the heat dissipation duct outlet 42 to flow through the through hole 222 into the inner cavity 21 of the cleaning roller 2, so as to dry the inner cavity 21 of the cleaning roller 2.

[0081] In one embodiment of this disclosure, such as Figure 5 and Figure 6As shown, the motor assembly 3 also includes a decorative sleeve 34, which is generally annular. The motor cover 33 is rotatably connected to the motor housing 31 via the decorative sleeve 34. Specifically, the decorative sleeve 34 is rotatably connected to the end of the motor housing 31 via a bearing 35. The end of the motor cover 33 extends to fit against the decorative sleeve 34, for example, through contact or interference fit, allowing the motor cover 33 to rotate relative to the motor housing 31 under the action of the decorative sleeve 34. That is, one end of the motor cover 33 is supported on the decorative sleeve 34, or directly cooperates with the bearing 34, thereby supporting one end of the motor cover 33. The other end of the motor cover 33 forms a transmission head 321 and is fixedly connected to the output shaft 32 of the motor assembly 3, thereby supporting the transmission head 321 of the motor cover 33 via the output shaft 32.

[0082] In one embodiment of this disclosure, a gap is formed between the cleaning roller 2 and the motor assembly 3 so that airflow can exit from one end of the inner cavity 21 of the cleaning roller 2 near the second support arm 12. Protruding ribs can be provided on the decorative sleeve 34 and / or the motor cover 33, which support the inner wall of the cleaning roller 2, thereby creating a gap between the motor assembly 3 and the cleaning roller 2 for airflow.

[0083] The decorative sleeve 34 is provided in the motor assembly 3. On the one hand, it can cover the bearing 35 that rotatably connects the motor cover 33 and the motor housing 31, preventing the bearing 35 from being directly exposed to the external environment and avoiding damage to the bearing 35 caused by sewage and dust in the external environment, thus shortening the service life of the bearing 35. On the other hand, the decorative sleeve 34 also serves a certain decorative purpose at the connection between the second support arm 12 and the motor housing 31, making the overall cleaning equipment look more aesthetically pleasing.

[0084] When the cleaning device of this disclosure is in operation, the motor assembly 3 drives the cleaning roller 2 to rotate via the transmission head 321 of the motor cover 33, thereby cleaning the cleaning surface. When the motor assembly 3 starts working, external airflow, under the negative pressure created by the motor assembly 3, enters the connecting ventilation duct 122 through the connecting ventilation duct inlet 1221 on the second support arm 12, then passes through the connecting sleeve 121 and the heat dissipation air duct inlet 41 connected to the connecting sleeve 121, and enters the first heat dissipation air duct 43 in the motor housing 31. The airflow dissipates heat from the internal components in the motor housing 31 in the first heat dissipation air duct 43, then enters the second heat dissipation air duct 44 through the connecting hole 311, and finally enters the inner cavity 21 of the cleaning roller 2 from the heat dissipation air duct outlet 42 of the second heat dissipation air duct 44.

[0085] When the airflow after heat dissipation flows along the inner cavity 21 of the cleaning drum 2, it can pass through the through hole 22 provided on the power transmission base 22 to flow to the other end of the inner cavity 21, and finally flow out from the inner cavity 21, thereby achieving the drying of the inner cavity 21 of the cleaning drum 2.

[0086] To allow airflow within the inner cavity 21, an air outlet 5 can be provided at the end where the cleaning roller 2 connects to the first support arm 11. For example, the air outlet 5 can be located on the cleaning roller 2, with several small holes penetrating the cylinder formed at the end of the cleaning roller 2 adjacent to the first support arm 11. Alternatively, and more preferably, the air outlet 5 can be the gap between the end of the cleaning roller 2 and the first support arm 11, which is the assembly gap between the end of the cleaning roller 2 and the support of the first support arm 11, rather than a separate opening specifically for airflow. Alternatively, the air outlet 5 can also be located on the first support arm 11 and communicate with the inner cavity 21 of the cleaning roller 2; this disclosure does not limit this.

[0087] Application Scenario 1

[0088] The cleaning equipment disclosed herein can be a floor scrubber. When the user starts the cleaning equipment to clean the floor, the cleaning equipment pumps water onto the cleaning roller 2, thereby enabling the cleaning roller 2 to clean the residual stains on the floor. Due to the large amount of water on the cleaning roller 2, and the inevitable problem that wastewater will enter the inner cavity 21 of the cleaning roller 2 during its rotation, the cleaning roller 2 will inevitably be affected.

[0089] During the rotation of the cleaning roller 2 driven by the motor assembly 3, external airflow, under negative pressure, enters the connecting ventilation duct 122 through the connecting ventilation duct inlet 1221 on the second handle 12. The airflow then continues to flow in the connecting ventilation duct 122 to the connecting sleeve 121, and then enters the cooling duct 4 of the motor assembly 3 through the cooling duct inlet 41. After entering the cooling duct 4, the airflow flows along the cooling duct 4, dissipating heat from the motor assembly 3. It then flows out from the cooling duct outlet 42 and enters the inner cavity 21 of the cleaning roller 2, drying the inner cavity 21 and preventing wastewater from accumulating in the inner cavity of the cleaning device, causing bacterial growth and odors.

[0090] Furthermore, in the cleaning device disclosed herein, the motor assembly 3 is located within the inner cavity of the cleaning roller 2, and the output end of the motor assembly 3 is connected to the inner wall of the cleaning roller 2 via a transmission connection. This simplifies the transmission relationship between the motor assembly 3 and the cleaning roller 2, eliminating the need for a traditional transmission mechanism. This, in turn, increases the cleaning surface area of ​​the cleaning roller 2.

[0091] Application Scenario 2

[0092] When external airflow enters the heat dissipation channel 4, it first enters the first heat dissipation duct 43 to dissipate heat from the internal components of the motor assembly 3. Then, the airflow flows out of the first heat dissipation duct 43 and into the second heat dissipation duct 44, which is formed by the motor housing 31 and the motor cover 33. Finally, the airflow flows out from the heat dissipation duct outlet 42 and into the inner cavity 21 of the cleaning roller 2 to dry the inner cavity 21, preventing wastewater from accumulating in the inner cavity of the cleaning device and causing bacterial growth and odors. The cleaning device of this disclosure is equipped with a second heat dissipation duct 44 formed by the motor housing 31 and the motor cover 33, extending the passage from the heat dissipation duct outlet 42 to the inside of the motor housing 31. This prevents wastewater in the cleaning roller 2 from entering the inside of the motor housing 31 through the heat dissipation duct outlet 42. Even if a small amount of wastewater enters the second heat dissipation duct 44, it will be dried by the heat dissipation airflow during operation.

[0093] 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, characterized in that, include: Body (1); A cleaning device configured to rotate relative to the body (1) to clean the cleaning surface; The cleaning device has an inner cavity (21); sewage tank; A drive unit is connected to the body (1) and has a heat dissipation duct (4); the drive unit is configured to extend into the inner cavity (21) of the cleaning device and drively engage with the cleaning device. The external airflow is configured to enter the heat dissipation duct (4) from the connection end between the drive device and the body, and enter the inner cavity (21) of the cleaning device through the heat dissipation duct; The body (1) is provided with a first arm (11) and a second arm (12) arranged opposite to each other. The drive device is connected to the second arm (12). The second arm (12) is provided with a connecting sleeve (121) and a connecting ventilation duct (122). One end of the connecting ventilation duct (122) is connected to the connecting sleeve (121), and the other end extends along the extension direction of the second arm (12), forming a connecting ventilation duct inlet (1221) on the side wall of the second arm (12). The connecting ventilation duct inlet (1221) is a hole opened on the second arm (12), allowing external airflow to enter the connecting ventilation duct (122) through the hole and enter the heat dissipation duct inlet (41) through the connecting sleeve (121). The connecting ventilation duct (122) is configured to allow wiring for electrically connecting the motor assembly (3) to pass through.

2. The cleaning equipment according to claim 1, characterized in that, The cleaning device is a cleaning roller (2), one end of which is rotatably connected to the first support arm (11); the driving device extends from the other end of the cleaning roller (2) into the inner cavity (21) of the cleaning roller (2) and is connected to the cleaning roller (2) in a transmission manner.

3. The cleaning equipment according to claim 2, characterized in that, The inner cavity (21) extends through the opposite ends of the cleaning roller (2), and an air outlet (5) is formed at one end of the cleaning roller (2) near the first support arm (11).

4. The cleaning equipment according to claim 2, characterized in that, The inner cavity (21) extends through the opposite ends of the cleaning roller (2), and there is a gap between the end of the cleaning roller (2) and the first support arm (11) to form an air outlet (5).

5. The cleaning equipment according to claim 2, characterized in that, The driving device is a motor assembly (3), the connecting end of the motor assembly (3) is fixedly connected to the second support arm (12), and the output end of the motor assembly (3) is connected to the inner wall of the cleaning roller (2) via transmission.

6. The cleaning equipment according to claim 5, characterized in that, The motor assembly (3) includes a motor housing (31) and an output shaft (32) extending from the motor housing (31); the heat dissipation duct (4) includes a heat dissipation duct inlet (41) disposed at the connecting end of the motor housing (31), and the connecting sleeve (121) is connected to the heat dissipation duct inlet (41) of the motor housing (31); external airflow is configured to enter the heat dissipation duct inlet (41) of the motor housing (31) through the connecting sleeve (121).

7. The cleaning equipment according to claim 1, characterized in that, The thickness of the ventilation duct (122) is at least 3 mm.

8. The cleaning equipment according to claim 1, characterized in that, With the side facing the user designated as the front side and the side away from the user designated as the rear side, the first arm (11) and the second arm (12) are constructed to extend from the edge of the body (1) to the rear side respectively; the thickness of the first arm (11) and the second arm (12) is between 4 and 6 mm.

9. The cleaning equipment according to claim 1, characterized in that, The motor assembly (3) includes a motor cover (33) fitted on the outside of the motor housing (31). The motor cover (33) is configured to have a shape that is adapted to the motor housing (31). One end of the motor cover (33) is fixedly connected to the output shaft (32) of the motor assembly (3), and the other end is rotatably connected to the motor housing (31).

10. The cleaning equipment according to claim 9, characterized in that, The motor assembly (3) also includes a decorative sleeve (34), which is rotatably connected to the connection end of the motor housing (31) via a bearing (35), and the end of the motor cover (33) extends to fit against the decorative sleeve (34).

11. The cleaning equipment according to claim 9, characterized in that, The cleaning device is a cleaning roller (2), and a transmission base (22) is provided on the inner wall of the cleaning roller (2). The transmission base (22) has a transmission cavity (221) facing the motor assembly (3). The motor cover (33) forms a transmission head (321) at one end near the output shaft (32). The transmission head (321) is configured to be detachably engaged with the transmission cavity (221) by plugging.

12. The cleaning equipment according to claim 11, characterized in that, The cleaning roller (2) is rotatably connected to the first support arm (11) in a detachable manner; or, the cleaning roller (2) is rotatably connected to the first support arm (11), and the first support arm (11) is detachably connected to the body (1).

13. The cleaning equipment according to claim 11, characterized in that, The transmission base (22) is provided with a through hole (222) for airflow.

14. The cleaning equipment according to claim 9, characterized in that, The heat dissipation duct (4) includes a first heat dissipation duct (43) disposed inside the motor housing (31) and a second heat dissipation duct (44) disposed between the motor housing (31) and the motor cover (33). The motor housing (31) is provided with a connecting hole (311) connecting the first heat dissipation duct (43) and the second heat dissipation duct (44). The motor cover (33) is provided with a heat dissipation duct outlet (42) connected to the second heat dissipation duct (44) at a position near the output end.

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