Cleaning equipment and drive devices

Abstract

The present disclosure provides a cleaning device and a driving device, comprising a body, a roller brush and a driving device, wherein the roller brush is configured to rotate about its axis and has an inner cavity; the driving device is connected to the body and has a heat dissipation duct; the driving device is configured to extend into the inner cavity of the roller brush and be in transmission engagement with a transmission seat located in the inner cavity of the roller brush; an air inlet and a seal for sealing the air inlet are provided on the driving device; the seal is configured to: when the driving device is assembled with the roller brush, open the air inlet under the pressure of the transmission seat to connect the heat dissipation duct with the inner cavity; and when the driving device is separated from the roller brush, seal the air inlet under elastic restoring force. The cleaning device disclosed in the present disclosure can, when in engagement with the roller brush, open the air inlet through the seal for heat dissipation, and after being separated from the roller brush, close the air inlet through the seal to prevent water from entering the air inlet.

Description

Technical Field

[0001] The present disclosure relates to the field of cleaning technology, and in particular to a cleaning device; the present disclosure also relates to a driving device in the above cleaning device. Background Art

[0002] With the development of social productivity, people's living standards have also improved. With material resources guaranteed, people have begun to use various tools to reduce labor and improve their quality of life, leading to the emergence of household cleaning equipment. For example, floor scrubbers typically use water as the cleaning medium. They spray clean water onto the cleaned area and rapidly rub the high-speed rotating drum against the cleaned area, simultaneously sucking dirt from the floor and the drum into a wastewater bucket, ultimately achieving the desired cleaning effect.

[0003] To make rational use of space, the floor brush motor is installed in the cavity of the drum. However, when the user removes the drum for cleaning, since the floor brush motor is exposed, water stains may enter the interior of the floor brush motor and cause a short circuit in the floor brush motor. Summary of the Invention

[0004] In order to solve the problems existing in the prior art, the present disclosure provides a cleaning device and a driving device.

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

[0006] body;

[0007] a roller brush configured to rotate about its axis, the roller brush having an inner cavity;

[0008] A drive device, the drive device being connected to the body and having a heat dissipation duct; the drive device being configured to extend into the inner cavity of the roller brush and to be in driving engagement with a drive seat located in the inner cavity; the drive device being provided with an air inlet and a sealing member for sealing the air inlet;

[0009] The seal is constructed such that: when the driving device and the roller brush are assembled together, the air inlet is opened under the squeezing of the transmission seat to connect the heat dissipation duct and the inner cavity; and when the driving device and the roller brush are separated, the air inlet is sealed under the elastic restoring force.

[0010] In one embodiment of the present disclosure, the driving device includes a reduction gearbox, and a coupling is provided at the output end of the reduction gearbox, and the coupling is configured to move between a first position and a second position along the axial direction of the reduction gearbox; the seal is fixed on the coupling and is configured to close the air inlet when the coupling is in the first position and open the air inlet when the coupling is in the second position.

[0011] In one embodiment of the present disclosure, the reduction gearbox includes a housing and an output shaft passing through the housing, the coupling is connected to the output shaft, and is constructed to move between a first position and a second position; an installation cavity is provided at the output end of the housing, and the air inlet is provided on the inner wall of the installation cavity; when the coupling is in the first position, the seal is configured to seal the open end of the installation cavity.

[0012] In one embodiment of the present disclosure, the installation cavity includes a side wall extending in the axial direction, and the sealing member is configured to be sealed together with the side wall.

[0013] In one embodiment of the present disclosure, the housing includes a side wall extending in the axial direction, and a flange extending radially inward from an end of the side wall; when the coupling is in the first position, the seal fits against an end face of the flange.

[0014] In one embodiment of the present disclosure, a gap is left between the sealing member and the side wall.

[0015] In one embodiment of the present disclosure, an elastic device is provided between the output shaft of the reduction gearbox and the coupling, and the elastic device is configured to pre-press the coupling to a first position.

[0016] In one embodiment of the present disclosure, the coupling is configured to have an outer contour matching that of the transmission seat, and is configured to move from a first position to a second position under the pressure of the transmission seat.

[0017] In one embodiment of the present disclosure, the driving device includes a reduction gear box, the output end of the reduction gear box is provided with a coupling, and the seal is fixed on the coupling. When the driving device is assembled with the roller brush, the seal is configured to be deformed by the squeezing of the roller brush to open the air inlet.

[0018] In one embodiment of the present disclosure, a pressing portion is provided on the transmission seat, and the pressing portion is configured to squeeze the sealing member to deform when the driving device and the roller brush are assembled together.

[0019] In one embodiment of the present disclosure, the driving device includes a driving motor, and the reduction gearbox is fixed to one end of the driving motor; the airflow in the roller brush cavity is configured to enter the interior of the driving motor through the air inlet.

[0020] In one embodiment of the present disclosure, the driving device includes a shell, which is mounted on the outside of the driving motor and the reduction gearbox; the airflow in the inner cavity of the roller brush is configured to pass through the air inlet into the gap between the shell and the reduction gearbox.

[0021] In one embodiment of the present disclosure, the reduction gearbox includes a housing and an installation cavity arranged at the open end of the housing; the air inlet passes through the inner wall of the installation cavity; an axially extending guide cavity is also provided on the outer wall of the housing; the airflow coming out of the air inlet is configured to flow into the interior of the drive motor through the guide cavity.

[0022] In one embodiment of the present disclosure, a sealing ring is provided between the housing and the drive motor, and the airflow flowing through the gap between the housing and the reduction gearbox is configured to enter the interior of the drive motor through a through hole provided on the drive motor.

[0023] According to a second aspect of the present disclosure, a driving device is further provided, wherein the driving device is configured to extend into an inner cavity of a roller brush in a cleaning device and to be in driving engagement with a transmission seat located in the inner cavity;

[0024] The driving device has a heat dissipation duct, and is provided with an air inlet and a seal for sealing the air inlet; the seal is constructed as follows: when the driving device and the roller brush are assembled together, the air inlet is opened under the squeezing of the transmission seat to connect the heat dissipation duct and the inner cavity; and when the driving device is separated from the roller brush, the air inlet is sealed under the elastic restoring force.

[0025] One beneficial effect of the present disclosure is that the cleaning device can open the air inlet through the seal when cooperating with the roller brush to allow the drive device to dissipate heat, and close the air inlet through the seal after being separated from the roller brush to prevent water stains from entering the drive device through the air inlet and the heat dissipation duct.

[0026] Other features and advantages of the present disclosure will become apparent from the following detailed description of exemplary embodiments of the present disclosure with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments of the present disclosure and, together with the description, serve to explain the principles of the present disclosure.

[0028] Figure 1 This is an exploded view of the cleaning device body and roller brush provided in the first embodiment of the present disclosure;

[0029] Figure 2 This is an exploded view of a roller brush and a driving device provided in the first embodiment of the present disclosure;

[0030] Figure 3 is an exploded view of another roller brush and driving device provided in the first embodiment of the present disclosure;

[0031] Figure 4is a cross-sectional view of a roller brush and a driving device provided in the first embodiment of the present disclosure;

[0032] Figure 5 This is a schematic diagram of the sealing member provided in the first embodiment of the present disclosure sealing the air inlet;

[0033] Figure 6 This is a schematic diagram of the seal provided in the first embodiment of the present disclosure when the air inlet is opened;

[0034] Figure 7 This is a schematic diagram of the sealing member and the side wall provided in the first embodiment of the present disclosure;

[0035] Figure 8 This is a schematic diagram of the seal provided in the second embodiment of the present disclosure when sealing an air inlet;

[0036] Figure 9 This is a schematic diagram of the seal provided in the second embodiment of the present disclosure when the air inlet is opened.

[0037] Figures 1 to 9 The one-to-one correspondence between the component names and the reference numerals is as follows:

[0038] 1. Machine body; 2. Roller brush; 20. Inner cavity; 21. Transmission seat; 211. Pressing part; 30. Cooling duct; 301. Air inlet; 302. Diversion cavity; 31. Reducer; 310. Box body; 311. Output shaft; 312. Mounting cavity; 313. Side wall; 314. Flange; 32. Coupling; 33. Drive motor; 34. Housing; 35. Sealing ring; 4. Sealing element; 5. Elastic device. DETAILED DESCRIPTION

[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 of components and steps, numerical expressions and numerical values ​​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 in nature and is in no way intended to limit the present disclosure, its application, or uses.

[0041] Technologies, methods, and equipment known to ordinary technicians in the relevant art may not be discussed in detail, but where appropriate, the technologies, methods, and equipment should be considered part of the specification.

[0042] In all examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not limiting. Therefore, other examples of the exemplary embodiments may have different values.

[0043] It should be noted that like reference numerals and letters refer to like items in the following figures, and therefore, once an item is defined in one figure, it need not be further discussed in subsequent figures.

[0044] In this document, “upper”, “lower”, “front”, “back”, “left”, “right”, etc. are only used to indicate the relative position relationship between related parts, rather than to limit the absolute positions of these related parts.

[0045] In this article, "first", "second", etc. are only used to distinguish each other, and do not indicate the importance and order, or the prerequisite for each other's existence.

[0046] In this document, “equal”, “same”, etc. are not strictly limited in a mathematical and / or geometric sense, but also include errors that can be understood by those skilled in the art and are allowed in manufacturing or use.

[0047] The present disclosure provides a cleaning device, which can be a handheld floor scrubber or other cleaning devices such as a cleaning robot. The cleaning device includes a body, a roller brush and a driving device. The roller brush is configured to rotate around its own axis and has an inner cavity. The driving device is connected to the body and has a heat dissipation duct. The driving device is configured to extend into the inner cavity of the roller brush and to be coupled with a transmission seat located in the inner cavity of the roller brush. The driving device is provided with an air inlet and a seal for sealing the air inlet. The seal is configured to: when the driving device and the roller brush are assembled together, the air inlet is opened under the pressure of the transmission seat to connect the heat dissipation duct and the inner cavity; and when the driving device is separated from the roller brush, the air inlet is sealed under the elastic restoring force.

[0048] When the drive unit and roller brush are in use, the seal opens the air inlet under the pressure of the drive base, allowing air to enter the heat dissipation duct and remove the heat dissipated by the drive unit. After removing the roller brush, the drive base is separated from the drive unit, and the seal closes the air inlet to prevent water stains from entering the heat dissipation duct through the air inlet and damaging the drive unit.

[0049] The technical solution of the present disclosure will be described in detail below in conjunction with specific structures.

[0050] Example 1

[0051] This embodiment provides a cleaning device such as Figure 1 As shown, it includes a body 1, a roller brush 2 and a driving device. The roller brush 2 can rotate relative to the body to clean the floor. Figure 2 、 Figure 3As shown, the roller brush 2 has an inner cavity 20, in which a transmission seat 21 is disposed. A drive device is connected to the housing 1 and is detachably connected to the roller brush 2, for driving the roller brush 2 to rotate. The drive device has a heat dissipation duct 30 and an air inlet 301 connected to the heat dissipation duct 30. The drive device is also provided with a seal 4 for sealing or opening the air inlet 301.

[0052] like Figure 4 As shown, when the roller brush 2 is mated with the drive device, the drive device can extend into the inner cavity 20 of the roller brush 2 and cooperate with the transmission seat 21 located in the inner cavity 20 of the roller brush 2, thereby driving the roller brush 2 to rotate through the transmission seat 21. At this time, the seal 4 opens the air inlet 301 under the pressure of the transmission seat 21, so that the inner cavity 20 of the roller brush 2 is connected with the heat dissipation duct 30 of the drive device. The inner cavity 20 of the roller brush 2 is connected with the outside world, and the airflow entering the inner cavity 20 from the outside world can enter the heat dissipation duct 30 through the air inlet 301. The airflow in the heat dissipation duct 30 can take away the heat of the drive device and then be discharged to the outside air to dissipate heat for the drive device. At least one air inlet 301 is provided, and the seal 4 can seal or open all air inlets 301 at the same time.

[0053] The roller brush 2 can be equipped with blades communicating with the inner cavity 20, which draw outside air into the inner cavity 20, thereby forming an airflow in the inner cavity 20 toward the heat dissipation duct 30. Alternatively, the drive device can be equipped with blades communicating with the heat dissipation duct 30, which create a negative pressure that facilitates airflow. The blades of the roller brush 2 and the drive device can be installed simultaneously to improve heat dissipation efficiency.

[0054] When the roller brush 2 is separated from the driving device, the seal 4 can seal the air inlet 301 under the elastic restoring force, preventing external water stains from entering the heat dissipation duct 30 through the air inlet 301 and causing damage to the driving device.

[0055] In one embodiment of the present disclosure, Figure 5 、 Figure 6 As shown, the drive device includes a reduction gearbox 31, with a coupling 32 disposed at the output end of the reduction gearbox 31. The coupling 32 is in driving engagement with the transmission base 21 of the roller brush. The coupling 32 is configured to move axially along the reduction gearbox 31 between a first position and a second position. The seal 4 is fixed to the coupling 32 and is configured to close the air inlet 301 when the coupling 32 is in the first position and to open the air inlet 301 when the coupling 32 is in the second position.

[0056] Specifically, if Figure 5 、 Figure 6As shown, the coupling 32 can move axially along the output end of the reduction gearbox 31. The coupling 32 can be plugged into the drive seat 21 of the roller brush 2, and the air inlet 301 is provided on the reduction gearbox 31. In the initial state, the coupling 32 is in the first position, at which time the seal 4 closes the air inlet 301. When the coupling 32 is engaged with the roller brush 2, the roller brush 2 squeezes the coupling 32 along the axial direction of the coupling 32, causing the coupling 32 to move from the first position to the second position along the output end of the reduction gearbox 31. The seal 4 follows the movement of the coupling 32 to open the air inlet 301. The reduction gearbox 31 can drive the coupling 32 to rotate through its output end, and the coupling 32 can further drive the roller brush 2 to rotate.

[0057] In one embodiment of the present disclosure, the coupling 32 is configured to have an outer contour that matches the transmission seat 21, and is configured to move from a first position to a second position under the pressure of the transmission seat 21. Specifically, Figure 4 As shown, the roller brush 2 rotates about its own axis, with its axis parallel to the work surface. The outer surface of the roller brush 2 may be provided with cleaning cotton, bristles, or other cleaning components. An inner cavity 20 is located within the roller brush 2. The drive seat 21 within the inner cavity 20 is located on the end of the roller brush 2 near the coupling 32. The coupling 32 and the drive seat 21 can engage with each other via a keyway. During installation, the drive seat 21 can be plugged into the coupling 32 along the axial direction, squeezing the coupling 32 from a first position to a second position. After the coupling 32 moves to the second position, the seal 4 opens the air inlet 301, allowing the cooling air duct 30 of the drive device to communicate with the inner cavity 20 of the roller brush 2 through the air inlet 301. The end of the roller brush 2 away from the coupling 32 can engage with the housing 1 and rotate relative to the housing 1. Once the cleaning roller 2 is installed, the coupling 32 can be pressed against the second position to maintain the air inlet 301 open.

[0058] In one embodiment of the present disclosure, Figure 5 、 Figure 6 As shown, the reduction gearbox 31 includes a housing 310 and an output shaft 311 extending through the housing 310. The output shaft 311 is disposed at the output end of the reduction gearbox 31. The coupling 32 is connected to the output shaft 311 and is configured to move along the output shaft 311 between a first position and a second position. A mounting cavity 312 is disposed at the output end of the housing 310. The mounting cavity 312 has an open end facing the transmission seat 21. The air inlet 301 is disposed on the inner wall of the mounting cavity 312. When the coupling 32 is in the first position, the seal 4 is configured to seal the open end of the mounting cavity 312, thereby sealing the air inlet 301 on the inner wall of the mounting cavity 312. When the coupling 32 is in the second position, the seal 4 is configured to open the open end of the mounting cavity 312, thereby opening the air inlet 301 on the inner wall of the mounting cavity 312.

[0059] In a specific embodiment of the present disclosure, Figure 7 As shown, the mounting cavity 312 includes a side wall 313 extending axially along the output shaft 311, and the seal 4 is constructed to be sealed together with the side wall 313 to form a radial sealing pair. Specifically, the mounting cavity is surrounded by the end face of the output end of the housing 310 and the side wall 313. The side wall 313 is formed by the edge of the housing 310 extending toward the transmission seat 21. The output shaft 311 extends from the open end of the mounting cavity 312, and the coupling 32 partially extends into the mounting cavity 312 from the open end. The housing 310 and the side wall 313 can be integrally formed. The integral forming method of the two can be cast by a mold or completed by machining. This article does not limit this.

[0060] like Figure 7 As shown, seal 4 is located in mounting cavity 312. When coupling 32 moves between a first position and a second position, seal 4 moves along sidewall 313 in mounting cavity 312. Air inlet 301 is provided on sidewall 313. When coupling 32 is in the first position, seal 4 is located between air inlet 301 and the open end of mounting cavity 312. When coupling 32 is in the second position, seal 4 is located so that air inlet 301 communicates with the open end of mounting cavity 312. When reduction gearbox 31 drives coupling 32 to rotate via output shaft 311, seal 4 abuts against sidewall 313 and rotates relative to it, maintaining a sealed state.

[0061] In another embodiment of the present disclosure, Figure 5 、 Figure 6 As shown, the housing 310 includes a sidewall 313 extending axially along the output shaft 311, and a flange 314 extending radially inward from the end of the sidewall 313. When the coupling 32 is in the first position, the seal 4 is in contact with the end face of the flange 314, forming an axial seal pair. Specifically, the mounting cavity is surrounded by the end face of the output end of the housing 310, the sidewall 313, and the flange 314. The flange 314 surrounds the open end of the mounting cavity 312. When the seal 4 is in contact with the flange 314, it seals the open end of the mounting cavity 312, thereby sealing the air inlet 301 in the mounting cavity 312. The sidewall 313 is formed by the edge of the housing 310 extending toward the roller brush 2. The output shaft 311 extends from the open end of the mounting cavity 312, and the coupling 32 partially extends into the mounting cavity 312 from the open end.

[0062] Specifically, the seal 4 is located in the installation cavity 312 and has a gap with the side wall 313 of the installation cavity 312. When the coupling 32 moves between the first position and the second position, the seal 4 moves in the installation cavity 312. When the coupling 32 is in the first position, the seal 4 fits against the inner side of the flange 314 to close the open end; when the coupling 32 is in the second position, the seal 4 leaves the flange 314 to open the open end, and the air inlet 301 is connected to the open end through the gap between the seal 4 and the side wall 313. When the reduction gearbox 31 drives the coupling 32 to rotate through the output shaft 311, the seal 4 rotates with the coupling 32 and does not contact the side wall 313, thereby reducing the wear of the seal 4 and extending its service life.

[0063] The seal 4 can be made of either rigid or flexible material. Preferably, the seal 4 is a flexible gasket that can be squeezed into the sidewall 313 or flange 314 to prevent seal failure due to wear. The seal 4 can be annular and disposed around the end of the coupling 32 near the reduction gearbox 31.

[0064] In a specific embodiment, the housing 310, sidewall 313 and flange 314 of the reduction gearbox 31 can be integrally formed, and the integral forming method can be mold casting or machining. This is not limited in this article. In another specific embodiment, if Figure 5 、 Figure 6 As shown, the side wall 313 and the flange 314 can constitute an end cover, which is connected to the output end of the box body 310. The specific connection method between the end cover and the box body 310 includes but is not limited to a snap connection, plug connection, screw connection, etc.

[0065] In one embodiment of the present disclosure, Figure 5 、 Figure 6 As shown, an elastic device 5 is provided between the output shaft 311 of the reduction gearbox 31 and the coupling 32, and the elastic device 5 is configured to pre-press the coupling 32 to the first position. When the roller brush 2 squeezes the coupling 32, it can overcome the elastic force of the elastic device 5, causing the coupling 32 to move from the first position to the second position along the output shaft 311 of the reduction gearbox 31, so that the seal 4 opens the air inlet 301, and the driving device can drive the roller brush 2 to rotate through the coupling 32 to perform cleaning work. During the cleaning process, the heat dissipation duct 30 of the driving device can dissipate heat through the air inlet 301. When the roller brush 2 is disengaged from the coupling 32, the elastic device 5 can drive the coupling 32 from the second position to the first position under its own elastic restoring force, so that the seal 4 closes the air inlet 301, preventing water from entering the heat dissipation duct 30 of the driving device through the air inlet 301.

[0066] The elastic device 5 includes but is not limited to a compression spring, a spring, an elastic block, etc. In a preferred embodiment, Figure 5 、 Figure 6 As shown, the elastic device 5 is a compression spring, which is sleeved on the output shaft 311 of the reduction gearbox 31 , one end of which is engaged with the output shaft 311 or the box body 310 , and the other end of which is engaged with the coupling 32 .

[0067] In one embodiment of the present disclosure, Figure 4 As shown, the drive device also includes a drive motor 33, a reduction gearbox 31 is fixed to one end of the drive motor 33, and the airflow in the inner cavity 20 of the roller brush 2 is configured to enter the interior of the drive motor 33 through the air inlet 301. Specifically, the reduction gearbox 31 has an input end, and through the input end and the output end of the drive motor 33, the drive motor 33 can transmit torque to the reduction gearbox 31, and then transmit it from the output end of the reduction gearbox 31 to the roller brush 2 through the coupling 32. The heat dissipation duct 30 extends from the air inlet 301 along the reduction gearbox 31 to the interior of the drive motor 33. The heat dissipation duct 30 can extend from the inside of the housing 310 of the reduction gearbox 31, or from the outside of the housing 310 of the reduction gearbox 31.

[0068] In a specific embodiment of the present disclosure, Figure 3 、 Figure 4 As shown, the drive device further includes a housing 34, which is mounted outside the drive motor 33 and the reduction gearbox 31. A gap is formed between the housing 34 and the reduction gearbox 31, which communicates with the interior of the drive motor 33. Airflow within the inner cavity 20 of the roller brush 2 is configured to enter the gap between the housing 34 and the reduction gearbox 31 through an air inlet 301. Specifically, the housing 34 can be configured as a cylindrical structure and fixedly connected to the housing 1. The drive motor 33 and the reduction gearbox 31 are arranged along the length of the housing 34, and the coupling 32 extends from one end of the housing 34. The gap between the housing 34 and the reduction gearbox 31 constitutes part of the heat dissipation duct 30. The drive motor 33 is provided with a through hole, and the gap between the housing 34 and the reduction gearbox 31 communicates with the interior of the drive motor 33 through the through hole, forming the heat dissipation duct 30. The through hole can be provided on the end surface of the drive motor 33 adjacent to the reduction gearbox 31, so that airflow in the gap between the housing 34 and the reduction gearbox 31 can enter the interior of the drive motor 33 through the through hole. An outlet of the heat dissipation channel 30 may be provided on the driving motor 33 , and air flow can flow out through the outlet and take away the heat inside the driving motor 33 .

[0069] In a specific embodiment of the present disclosure, Figure 2 、 Figure 3As shown, an axially extending guide cavity 302 is further provided on the outer wall of the housing 310; airflow from the air inlet 301 is configured to flow into the interior of the drive motor 33 through the guide cavity 302. Specifically, the guide cavity 302 constitutes part of the heat dissipation duct 30. The guide cavity 302 can be provided as a through-slot on the side wall of the housing 310. One end of the guide cavity 302 communicates with the air inlet 301, and the other end communicates with the interior of the drive motor 33 through a through hole in the drive motor 33.

[0070] In a specific embodiment of the present disclosure, Figure 4 As shown, a sealing ring 35 is provided between the housing 34 and the drive motor 33. The airflow passing through the gap between the housing 34 and the reduction gearbox 31 is configured to enter the interior of the drive motor 33 through a through-hole provided on the drive motor 33. The sealing ring 35 can seal the gap between the drive motor 33 and the housing 34 to ensure that all airflow in the gap between the housing 34 and the reduction gearbox 31 enters the interior of the drive motor 33 through the through-hole, thereby preventing air pressure loss in the heat dissipation duct 30.

[0071] In the cleaning configuration of this embodiment, when the roller brush 2 engages with the coupling 32, the coupling 32 is pushed along the output shaft 311 of the reduction gearbox 31, causing the seal 4 to open the air inlet 301, connecting the cooling duct 30 with the inner cavity 20 of the roller brush 2. Airflow in the inner cavity 20 can then enter the cooling duct 30 to dissipate heat for the drive motor 33. When the roller brush 2 disengages from the coupling 32, the elastic device 5 drives the coupling 32 back to its original position, allowing the seal 4 to seal the air inlet 301, thereby preventing water stains on the ground from entering the cooling duct 30 and short-circuiting the drive motor 33.

[0072] Example 2

[0073] The cleaning device in this embodiment is different from the cleaning device in Embodiment 1 in that the sealing member 4 opens or seals the air inlet 301 by deforming itself.

[0074] Specifically, the drive device has a heat dissipation duct 30, and the roller brush 2 has an inner cavity 20. The heat dissipation duct 30 and the inner cavity 20 can be connected through an air inlet 301. The drive device includes a reduction gearbox 31, and a coupling 32 is provided at the output end of the reduction gearbox 31. The seal 4 is fixed to the coupling 32.

[0075] like Figure 8 、 Figure 9As shown, when the drive device and roller brush 2 are assembled, the seal 4 is configured to be squeezed by the roller brush 2 and deformed, thereby opening the air inlet 301. Specifically, the reduction gearbox 31 includes a housing 310 and an output shaft 311 extending through the housing 310. The coupling 32 is fixedly connected to the output shaft 311, and the reduction gearbox 31 can drive the coupling 32 to rotate via the output shaft 311. The roller brush 2 has a transmission seat 21 in its inner cavity 20, and the coupling 32 can cooperate with the transmission seat 21 to drive the roller brush to rotate.

[0076] The sealing member 4 can be made of a flexible material such as rubber and has a certain elasticity. When the driving device is separated from the roller brush 2, the sealing member 4 can seal the air inlet 301 through its own elastic restoring force.

[0077] In one embodiment of the present disclosure, Figure 9 As shown, a pressing portion 211 is provided on the transmission seat 21 of the roller brush 2. The pressing portion 211 is constructed so that when the driving device and the roller brush 2 are assembled together, the squeeze seal 4 is deformed. Specifically, the housing 310 of the reduction gearbox 31 is provided with a mounting cavity 312 at the output end, and the end of the mounting cavity 312 facing the roller brush 2 is an open end. The air inlet 301 is provided on the inner wall of the mounting cavity 312. When the seal 4 is in the initial position, it seals the open end of the mounting cavity 312, thereby sealing the air inlet 301; after being squeezed by the pressing portion 211, the seal 4 bends toward the inside of the mounting cavity 312, thereby opening the open end of the mounting cavity 312 and further opening the air inlet 301.

[0078] In a specific embodiment of the present disclosure, Figure 8 、 Figure 9 As shown, the mounting cavity 312 includes a sidewall 313 extending axially along the output shaft 311. The seal 4 is configured to seal together with the sidewall 313 to seal the air inlet 301. When the pressing portion 211 of the transmission seat 21 presses the seal 4, the seal 4 separates from the sidewall 313, thereby opening the air inlet 301.

[0079] In another embodiment of the present disclosure, the housing 310 includes a sidewall 313 extending axially along the output shaft 311, and a flange 314 extending radially inward from the end of the sidewall 313. Specifically, the mounting cavity is defined by the end surface of the output end of the housing 310, the sidewall 313, and the flange 314. The flange 314 defines the open end of the mounting cavity 312. When the seal 4 is in contact with the flange 314, it seals the open end of the mounting cavity 312, thereby sealing the air inlet 301 in the mounting cavity 312. When the pressing portion 211 of the transmission seat 21 presses the seal 4, the seal 4 separates from the flange 314, thereby opening the air inlet 301.

[0080] In this embodiment, the structure between the coupling 32 and the output shaft 311 of the reduction gearbox 31 is simpler, which is convenient for processing and assembly, and can reduce production costs. The other structures and principles of the drive device and the roller brush 2 can refer to the description of embodiment 1, so they are not repeated in this embodiment.

[0081] The present disclosure also provides a drive device that can be used in the above-mentioned cleaning device, which has heat dissipation and waterproofing functions. The drive device can also be used in other equipment to drive rotating parts. Taking the cleaning device as an example, the drive device is configured to extend into the inner cavity 20 of the roller brush 2 in the cleaning device and to engage with the transmission seat 21 located in the inner cavity 20 of the roller brush 2.

[0082] The drive unit has a heat dissipation duct 30, an air inlet 301, and a seal 4 for sealing the air inlet 301. The seal 4 is configured such that, when the drive unit and roller brush 2 are assembled, the air inlet 301 is opened by the pressure of the transmission base 21 to connect the heat dissipation duct 30 with the inner cavity 20; and when the drive unit and roller brush 2 are separated, the seal 4 seals the air inlet 301 under the elastic restoring force.

[0083] The specific structure and principle of the driving device and the roller brush 2 can refer to the description of Example 1 and Example 2, so they will not be repeated in this embodiment.

[0084] The technical solutions adopted in the present disclosure are described below in conjunction with specific application scenarios to facilitate understanding.

[0085] Application Scenario 1

[0086] When the roller brush 2 is not installed on the cleaning equipment, the elastic device 5 pre-presses the coupling 32 to the first position, and the seal 4 on the coupling 32 closes the open end of the installation cavity 312 to seal the air inlet 301 on the reduction gear box 31, thereby closing the heat dissipation duct 30 on the reduction gear box 31 and the drive motor 33.

[0087] When installing the roller brush 2, the drive base 21 of the roller brush 2 is plugged into the coupling 32. The roller brush 2 overcomes the elastic force of the elastic device 5 to push the coupling 32 to move. The coupling 32 moves along the output shaft 311 of the reduction gearbox 31 from the first position to the second position. The seal 4 follows the movement of the coupling 32, opening the open end of the installation cavity 312, thereby opening the air inlet 301 on the reduction gearbox 31, thereby connecting the heat dissipation duct 30 with the inner cavity 20 of the roller brush 2. During operation, the drive motor 33 drives the roller brush 2 to rotate through the reduction gearbox 31 and the coupling 32 to clean the floor. The airflow in the inner cavity 20 of the roller brush 2 enters the heat dissipation duct 30 through the air inlet 301, and removes the heat generated by the drive motor 33 during operation.

[0088] When the roller brush 2 is removed, the elastic device 5 drives the coupling 32 from the second position back to the first position through the elastic restoring force, and the seal 4 closes the open end of the installation cavity 312, thereby closing the air inlet 301, thereby preventing water stains on the ground from entering the heat dissipation duct 30.

[0089] Application Scenario 2

[0090] When the roller brush 2 is not installed on the cleaning device, the seal 4 on the coupling 32 is in the initial state and closes the open end of the installation cavity 312 to seal the air inlet 301 on the reduction box 31, thereby closing the heat dissipation duct 30 on the reduction box 31 and the drive motor 33.

[0091] When installing the roller brush 2, the drive base 21 of the roller brush 2 is plugged into the coupling 32. The drive base 21 squeezes the seal 4 through the press-fit portion 211, deforming the seal 4 and opening the opening of the installation cavity 312. This opens the air inlet 301 on the reduction gearbox 31, thereby connecting the heat dissipation duct 30 with the inner cavity 20 of the roller brush 2. During operation, the drive motor 33 drives the roller brush 2 through the reduction gearbox 31 and the coupling 32 to rotate and clean the floor. Airflow in the inner cavity 20 of the roller brush 2 enters the heat dissipation duct 30 through the air inlet 301, removing heat generated by the drive motor 33.

[0092] When the roller brush 2 is removed, the seal 4 closes the open end of the installation cavity 312 under its own elastic recovery effect, thereby closing the air inlet 301 to prevent water stains on the wet ground from entering the heat dissipation duct 30.

[0093] The embodiments of the present disclosure have been described above. The above description is exemplary, not exhaustive, and is 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 terms used herein are selected to best explain the principles of the embodiments, their practical applications, or technical improvements in the marketplace, or to enable other persons skilled in the art to understand the embodiments disclosed herein. The scope of the present disclosure is defined by the appended claims.

Claims

1. A cleaning device, characterized in that: include: Body (1); A roller brush configured to rotate about its axis, the roller brush having an inner cavity (20); A driving device, the driving device being connected to the machine body (1) and having a heat dissipation duct (30); the driving device being configured to extend into the inner cavity (20) of the roller brush and to be in transmission engagement with a transmission seat (21) located in the inner cavity (20); the driving device being provided with an air inlet (301) and a sealing member (4) for sealing the air inlet (301); The sealing member (4) is constructed such that: when the driving device and the roller brush are assembled together, the air inlet (301) is opened under the pressure of the transmission seat (21) to connect the heat dissipation duct (30) with the inner cavity (20); and when the driving device and the roller brush are separated, the air inlet (301) is sealed under the elastic restoring force.

2. The cleaning device according to claim 1, characterized in that The driving device comprises a reduction box (31), an output end of the reduction box (31) is provided with a coupling (32), and the coupling (32) is configured to move between a first position and a second position along the axial direction of the reduction box (31); the sealing member (4) is fixed on the coupling (32) and is configured to close the air inlet (301) when the coupling (32) is in the first position, and to open the air inlet (301) when the coupling (32) is in the second position.

3. The cleaning device according to claim 2, characterized in that The reduction box (31) comprises a box body (310) and an output shaft (311) passing through the box body; the coupling (32) is connected to the output shaft (311) and is configured to move between a first position and a second position; a mounting cavity (312) is provided at the output end of the box body (310); the air inlet (301) is provided on the inner wall of the mounting cavity (312); when the coupling (32) is located at the first position, the sealing member (4) is configured to seal the open end of the mounting cavity (312).

4. The cleaning device according to claim 3, characterized in that The installation cavity (312) comprises a side wall (313) extending in the axial direction, and the sealing member (4) is configured to be sealed together with the side wall (313).

5. The cleaning device according to claim 3, characterized in that The box body (310) includes a side wall (313) extending in the axial direction, and a flange (314) extending radially inward from the end of the side wall (313); when the coupling (32) is located in the first position, the sealing member (4) is in contact with the end surface of the flange (314).

6. The cleaning device according to claim 5, characterized in that A gap is left between the sealing member (4) and the side wall (313).

7. The cleaning device according to claim 3, characterized in that An elastic device (5) is provided between the output shaft (311) of the reduction box (31) and the coupling (32), and the elastic device (5) is configured to pre-press the coupling (32) to a first position.

8. The cleaning device according to claim 2, characterized in that The coupling (32) is constructed to have an outer contour that matches the transmission seat (21), and is constructed to move from a first position to a second position under the pressure of the transmission seat (21).

9. The cleaning device according to claim 1, characterized in that The driving device comprises a reduction box (31), an output end of the reduction box (31) is provided with a coupling (32), the sealing member (4) is fixed on the coupling (32), and when the driving device is assembled with a roller brush, the sealing member (4) is configured to be squeezed by the roller brush and deformed to open the air inlet (301).

10. The cleaning device according to claim 9, characterized in that A pressing portion (211) is provided on the transmission seat (21), and the pressing portion (211) is configured to squeeze the sealing member (4) to deform when the driving device and the roller brush are assembled together.

11. The cleaning device according to claim 2 or 9, characterized in that: The driving device comprises a driving motor (33), and the reduction box (31) is fixed to one end of the driving motor (33); the airflow in the roller brush inner cavity (20) is configured to enter the interior of the driving motor (33) through the air inlet (301).

12. The cleaning device according to claim 11, characterized in that The driving device comprises a housing (34), and the housing (34) is mounted on the outside of the driving motor (33) and the reduction box (31); the airflow in the roller brush inner cavity (20) is configured to enter the gap between the housing (34) and the reduction box (31) through the air inlet (301).

13. The cleaning device according to claim 12, characterized in that The reduction box (31) comprises a box body (310) and a mounting cavity (312) arranged at an open end of the box body (310); the air inlet (301) passes through the inner wall of the mounting cavity (312); an axially extending flow guide cavity (302) is further provided on the outer wall of the box body (310); and the air flow from the air inlet (301) is configured to flow into the interior of the drive motor (33) through the flow guide cavity (302).

14. The cleaning device according to claim 13, characterized in that A sealing ring is provided between the housing (34) and the drive motor (33), and the airflow flowing through the gap between the housing (34) and the reduction gear box (31) is configured to enter the interior of the drive motor (33) through a through hole provided on the drive motor (33).

15. A driving device, characterized in that: The driving device is configured to extend into an inner cavity (20) of a roller brush in a cleaning device and to be coupled to a transmission seat (21) located in the inner cavity (20); The driving device has a heat dissipation duct (30), and is provided with an air inlet (301) and a sealing member (4) for sealing the air inlet (301); the sealing member (4) is constructed such that: when the driving device is assembled with a roller brush, the air inlet (301) is opened under the pressure of the transmission seat (21) to connect the heat dissipation duct (30) with the inner cavity (20); and when the driving device is separated from the roller brush, the air inlet (301) is sealed under the elastic restoring force.

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