Gear actuation structure for surface cleaning device, and surface cleaning device

Abstract

Disclosed in the present invention are a gear actuation structure for a surface cleaning device, and the surface cleaning device. The gear actuation structure comprises a fixed gear, a first transmission gear and a second transmission gear, wherein the fixed gear is configured to be mounted on a floor brush assembly of the surface cleaning device, the first transmission gear is configured to be mounted on a body of the surface cleaning device, and the second transmission gear is configured to be mounted on an output portion of the surface cleaning device; one side of the first transmission gear is in transmission connection with the fixed gear, and the other side of the first transmission gear is in transmission connection with the second transmission gear. When the body is in a vertical state relative to the floor brush assembly, the gear actuation structure and the output portion are in an initial state; and when the body rotates into an inclined state relative to the floor brush assembly, the first transmission gear rotates on the fixed gear and drives the second transmission gear to rotate, such that the second transmission gear drives the output portion to rotate for output.

Description

Gear actuating structure of surface cleaning device and surface cleaning device Technical Field

[0001] The present invention relates to the technical field of cleaning devices, and more specifically to a gear actuating structure of a surface cleaning device and the surface cleaning device. Background Art

[0002] A surface cleaning device is a device used to clean surfaces such as floors, carpets, or tabletops. Currently, most surface cleaning devices are vertical, generally comprising a body and a floor brush assembly mounted at the bottom of the body. The body drives the floor brush assembly to move across the floor to clean and absorb dirt. When not in use, the body of a vertical surface cleaning device is typically vertical relative to the floor brush assembly to save storage space. When in use, the body is typically tilted relative to the floor brush assembly by applying force to the body, allowing a user to easily push the body and drive the floor brush assembly to clean the floor. However, current surface cleaning devices struggle to remove stubborn stains on the floor by vacuuming alone, requiring wet cleaning through a washing function. A clean water tank and a dirty water tank are mounted on the body. During cleaning, water containing cleaning fluid is first sprayed onto the floor through the clean water tank, and the cleaned dirty water is then sucked into the dirty water tank. Switching between the water spraying and water absorbing functions often requires manual control by the user, and users are prone to forgetting to close the clean water tank, causing the clean water containing cleaning fluid to continue to flow outward, thereby contaminating the floor.

[0003] Therefore, the invention patent with publication number: CN112716351A discloses a floor cleaning accessory, comprising: a base, which can be moved along the floor to be cleaned, the base comprising a shell and a suction nozzle; a body, rotatably connected to the base so as to rotate between an upright position and an inclined position relative to the base, and the body is provided with an interface for fluid connection with a suction source; a cleaning fluid distribution system, comprising a cleaning fluid distribution pipeline fluidly connected to a cleaning flow supply source to distribute cleaning fluid to a brush assembly and / or a floor to be cleaned; a valve, fluidly connected to the cleaning fluid distribution pipeline to control the on / off of the cleaning fluid distribution pipeline; a switching mechanism for controlling the opening / closing of the valve, the switching mechanism being configured to be physically coupled to the body rotating from the inclined position to the upright position, so that the rotation of the body from the inclined position to the upright position can trigger the switching mechanism to close the valve. In this technical solution, a valve and an operating key are provided, and the operating key is configured to be physically coupled with the rotation of the body from an inclined position to an upright position, so that the user can stop the cleaning work and, by rotating the body, the operating key can move accordingly and trigger the valve to close. This can avoid the problem of cleaning leakage caused by the user forgetting to cut off the cleaning fluid distribution pipeline after shutdown; however, the switch mechanism can only be used to control the opening / closing of the valve, and cannot be adapted to other function switching uses of the cleaning device, and its practicality is relatively small.

[0004] On the other hand, vertical surface cleaning devices are difficult to clean surfaces above the ground, such as desktops, car interiors, curtains, sofas, etc., so most surfaces above the ground are cleaned by handheld surface cleaning devices. Therefore, users need to purchase a variety of cleaning equipment to meet the needs of multi-scene use, which puts a certain burden on the user's economy and storage space. Therefore, some technical solutions integrate vertical surface cleaning devices and handheld surface cleaning devices. By installing handheld accessories on the vertical surface cleaning device, the surface cleaning device has both floor brush functions and accessory functions to meet the needs of multi-scene use. However, in actual use, the floor brush component and the handheld accessory are often switched. Currently, the floor brush mode and accessory mode are mostly switched manually by the user. Users are prone to forget and cannot switch functions, which is still inconvenient to use.

[0005] In summary, current surface cleaning devices still require an actuating structure that can automatically switch functions when the body switches between the upright state and the tilted state, and the actuating structure can be used for multiple function switching such as opening and closing the clean water tank or mode switching. Technical issues

[0006] The technical problem to be solved by the present invention is to provide a gear actuation structure of a surface cleaning device, which can output according to the changes in the upright state and inclined state of the machine body, so that the surface cleaning device can automatically switch functions. The gear actuation structure is compact and automatic, efficient and reliable. Technical Solutions

[0007] The present invention provides a gear actuating structure of a surface cleaning device, comprising a fixed gear, a first transmission gear and a second transmission gear, wherein the fixed gear is used to be installed on the floor brush assembly of the surface cleaning device, the first transmission gear is used to be installed on the body of the surface cleaning device, and the second transmission gear is used to be installed on the output part of the surface cleaning device, one side of the first transmission gear is connected to the fixed gear, and the other side of the first transmission gear is connected to the second transmission gear, when the body is in a vertical state relative to the floor brush assembly, the gear actuating structure and the output part are in an initial state, and when the body rotates to an inclined state relative to the floor brush assembly, the first transmission gear rotates on the fixed gear and drives the second transmission gear to rotate, so that the second transmission gear drives the output part to rotate and output.

[0008] In the present technical solution, the surface cleaning device includes a body and a floor brush assembly, and the floor brush assembly is rotatably installed at the bottom of the body, so that the user can tilt the body when using the floor brush assembly. The tilted body pushes the floor brush assembly more labor-saving, and the user can rotate the body to a suitable angle according to his or her own height or usage habits. Therefore, the body has a vertical state and a tilted state relative to the floor brush assembly; a first transmission gear of a gear actuation structure is installed on the body, and the first transmission gear is driven to rotate when the body rotates, and a second transmission gear of a gear actuation structure is installed on the output part of the surface cleaning device, and the output part refers to a component that rotates due to the output of the gear actuation structure. The output part can be a control valve for controlling the opening and closing of the clean water tank or a control switch for controlling the start and stop of the floor brush assembly, etc., and a gear actuation structure is provided. The fixed gear of the wheel-actuated structure is installed on the floor brush assembly, and the fixed gear always maintains its initial state. A first transmission gear is provided to be connected to the fixed gear and the second transmission gear respectively. When the machine body rotates relative to the floor brush assembly, the machine body drives the first transmission gear to rotate along the fixed gear, and the first transmission gear drives the second transmission gear to drive the output part to rotate. Under the action of the gear-actuated structure, the output part can rotate to realize function switching. The output part maintains its initial state when the machine body is in a vertical state relative to the floor brush assembly, and the output part rotates when the machine body is in a tilted state relative to the floor brush assembly to switch functions. The user only needs to rotate the machine body to realize the automatic switching function, and no additional manual operation is required by the user. The user experience is better, and the gear-actuated structure is compact, automatic, efficient and reliable.

[0009] As an improvement, the first transmission gear is provided with a first tooth body and a second tooth body. The first transmission gear is meshed with the fixed gear through the first tooth body for transmission, and the first transmission gear is meshed with the second transmission gear through the second tooth body for transmission. In this technical solution, the first transmission gear is respectively connected to the fixed gear and the second transmission gear through the first tooth body and the second tooth body. The meshing action of the first tooth body and the second tooth body makes the transmission coordination more efficient and more reliable.

[0010] As an improvement, the size of the first tooth body is larger than that of the second tooth body. In this technical solution, the sizes of the first tooth body and the second tooth body are set to be different, so that the rotation angles of the first transmission gear and the second transmission gear are different, so that the first transmission gear can drive the second transmission gear to rotate. The first transmission gear is matched with the fixed gear through the first tooth body. The size of the first tooth body is set to be larger, so that the relative rotation angle between the first transmission gear and the fixed gear is smaller, and the strength of the first tooth body is also better. The first transmission gear is matched with the second transmission gear through the second tooth body. The size of the second tooth body is set to be smaller, so that the relative rotation angle between the first transmission gear and the second transmission gear is larger, and the transmission matching efficiency is higher.

[0011] As an improvement, the first transmission gear is further provided with a third tooth body, and the fixed gear is provided with a avoidance portion adapted to the third tooth body to form an idle stroke state, and a fourth tooth body driving the third tooth body to rotate, the third tooth body is located on one side of the fourth tooth body, and the first tooth body can enter or disengage from the other side of the fourth tooth body, and an angle is set between the third tooth body and the first tooth body. In the process of rotating to the vertical state, the third tooth body moves from the avoidance portion to the fourth tooth body and counteracts the fourth tooth body, and the fourth tooth body drives the third tooth body to rotate to drive the first tooth body to enter the other side of the fourth tooth body. In the process of reverse rotation to the inclined state, the fourth tooth body drives the first tooth body on the other side of the fourth tooth body to drive the first transmission gear to rotate, and the rotation of the first transmission gear drives the second transmission gear to rotate. At the same time, the third tooth body enters the avoidance portion to form an idle stroke state. After the tilt exceeds a certain angle, the first tooth body and the fourth tooth body disengage from each other to maintain the idle stroke state without interfering with each other.

[0012] In this technical solution, a third tooth body is provided on the first transmission gear, and the first transmission gear is connected to the fixed gear through the cooperation of the first tooth body and the third tooth body. Considering that the output part generally controls two states by rotation, such as controlling the opening and closing of the clean water tank, or controlling the start and stop of the floor brush assembly, or controlling the switching of the floor brush assembly and the handheld accessory, the output part can often only switch between two specific positions. Therefore, the second transmission gear is required to stop when it rotates to the two specific positions, then the first transmission gear also needs to stop rotating in advance, that is, the first transmission gear and the fixed gear need to be disengaged, so that the second transmission gear can be turned off. The first transmission gear and the second transmission gear both rotate synchronously with the body, so that the second transmission gear stays at a specific position. Therefore, in this solution, a third tooth body is provided, and a avoidance portion and a fourth tooth body are provided on the fixed gear. The avoidance portion is adapted to the third tooth body and forms an idle stroke state. The avoidance portion refers to an idle stroke section that avoids the third tooth body so that the third tooth body can pass smoothly. In this solution, the avoidance portion is a depression with an L-shaped cross section, and the bottom of the avoidance portion is arc-shaped, so that the first transmission gear and the second transmission gear both rotate synchronously with the body, an angle is set between the third tooth body and the first tooth body, and the fourth tooth body The body is located between the first tooth body and the third tooth body. The first transmission gear can switch the first tooth body to cooperate with the fourth tooth body or the third tooth body to cooperate with the fourth tooth body during movement. In the process of rotating to the vertical state, the third tooth body moves from the avoidance portion to the fourth tooth body and abuts against the fourth tooth body. The fourth tooth body drives the third tooth body to rotate to drive the first tooth body to enter the other side of the fourth tooth body. The fourth tooth body pushes up the third tooth body, and the first tooth body enters the other side of the fourth tooth body to prepare for meshing. For example, the first tooth body is set close to or spaced apart from the fixed gear. The first transmission gear can drive the second transmission gear. When the gear is rotated to a specific position in the upright state, during the process of rotating in the opposite direction to the tilted state, the fourth tooth drives the first tooth on the other side of the fourth tooth to drive the first transmission gear to rotate in the opposite direction. The first transmission gear drives the second transmission gear to rotate while the third tooth enters the avoidance portion to form an idle stroke state. The first transmission gear and the second transmission gear both rotate synchronously with the gear. After tilting beyond a certain angle, the first tooth and the fourth tooth disengage from each other to maintain the idle stroke state without interfering with each other. The second transmission gear stays at a specific position in the tilted state, thereby improving the accuracy of the gear actuation mechanism.

[0013] As an improvement, the first and third teeth are distributed axially, forming an axially multi-layered tooth structure. In this technical solution, the first and third teeth are arranged in an alternating pattern on the first transmission gear, and the first and second teeth form a multi-layered tooth structure, so that the first transmission gear and the fixed gear are always engaged. The multi-layered tooth structure helps reduce the size of the first transmission gear, making the overall structure more compact and reliable.

[0014] As an improvement, the first tooth body includes a first tooth and a second tooth, the fixed gear is provided with a first tooth groove and a second tooth groove, the first tooth groove is adapted to the first tooth, the second tooth groove is adapted to the second tooth, and the fourth tooth body is located between the first tooth groove and the avoidance portion. In this technical solution, the first tooth body is provided with a first tooth and a second tooth, and the first tooth body cooperates with the first tooth and the second tooth to transmit to the fixed gear. The fixed gear is provided with a first tooth groove adapted to the first tooth and a second tooth groove adapted to the second tooth, so that the first tooth is accommodated in the first tooth groove and the second tooth is accommodated in the second tooth groove. The first tooth groove cooperates with the second tooth groove to position the first tooth body, thereby improving the transmission matching efficiency and reliability.

[0015] As an improvement, the first tooth groove, the second tooth groove, and the relief portion are all arc-shaped, and the lengths of the first tooth groove and the second tooth groove are both shorter than the length of the relief portion. In this technical solution, the first tooth groove, the second tooth groove, and the relief portion are all arc-shaped, which makes the rotation of the first tooth body and the second tooth body smoother and more efficient. The lengths of the first tooth groove and the second tooth groove are both shorter than the length of the relief portion, and the path for the first transmission gear to mesh with the fixed gear through the third tooth body is longer, which makes the angle range of the first transmission gear driven by the body to rotate larger, and more comfortable for the user during use.

[0016] As an improvement, the first transmission gear, the first tooth body, the second tooth body and the third tooth body are an integrally formed structure. In this technical solution, the first tooth body, the second tooth body and the third tooth body are integrally formed on the first transmission gear, so that the first tooth body, the second tooth body and the third tooth body are stronger, the structure is more compact, and the installation steps are simplified.

[0017] The present invention can also provide a surface cleaning device, including a body and a floor brush assembly, wherein the floor brush assembly is rotatably mounted on the bottom of the body, and is characterized in that it also includes a gear actuating structure of any of the aforementioned surface cleaning devices, the fixed gear is mounted on the floor brush assembly, the first transmission gear is rotatably mounted on the body, and the second transmission gear is mounted on the output part of the surface cleaning device.

[0018] In the present technical solution, a floor brush assembly is arranged to be installed at the bottom of the machine body, and the user can drive the floor brush assembly to move on the ground through the machine body to clean and absorb dirt on the ground. The floor brush assembly is arranged to be rotatably connected to the machine body, and the user can apply force to the machine body to make the machine body tilted relative to the floor brush assembly. Therefore, the machine body has an upright state and an inclined state relative to the floor brush assembly. The user can rotate the machine body to a suitable angle according to his or her own height or usage habits, so that the machine body and the floor brush assembly can be easily pushed, which is more labor-saving and comfortable to use. The surface cleaning device is also provided with a gear actuation structure, and the first transmission gear in the gear actuation structure is installed on the machine body. When the machine body rotates, it drives the first transmission gear to rotate. The second transmission gear in the gear actuation structure is installed on the output part of the surface cleaning device, and the output part refers to the output of the gear actuation structure. The rotating component, the output part, can be a control valve for controlling the opening and closing of the clean water tank or a control switch for controlling the start and stop of the floor brush assembly, etc. The fixed gear in the gear actuation structure is installed on the floor brush assembly, and the fixed gear always maintains its initial state. When the machine body rotates relative to the floor brush assembly, the machine body drives the first transmission gear to rotate along the fixed gear, and the first transmission gear drives the second transmission gear to drive the output part to rotate. Under the action of the gear actuation structure, the output part can rotate to realize function switching. The output part maintains its initial state when the machine body is in a vertical state relative to the floor brush assembly, and the output part rotates when the machine body is in a tilted state relative to the floor brush assembly to switch functions. The user only needs to rotate the machine body to realize the automatic switching function, and no additional manual operation is required by the user. The user experience is better, and the gear actuation structure is compact, automatic, efficient and reliable.

[0019] As an improvement, a handheld accessory is installed on the body, a sewage tank is provided in the body, a first air duct is provided between the floor brush assembly and the sewage tank, a second air duct is provided between the handheld accessory and the sewage tank, and a sealed rotating part is provided at the junction of the first air duct, the second air duct and the sewage tank. The sealed rotating part is configured as an output part. When the body is in a vertical state relative to the floor brush assembly, the gear actuating structure is in an initial state, the sealed rotating part connects the second air duct and the sewage tank and blocks the first air duct, so that the handheld accessory is in use. When the body rotates relative to the floor brush assembly and is in an inclined state, the gear actuating structure is forced to drive the sealed rotating part to rotate, and the sealed rotating part connects the first air duct and the sewage tank and blocks the second air duct, so that the floor brush assembly is in use.

[0020] In the present technical solution, the machine body can clean tabletops, sofas, curtains, car interiors, etc. above the ground through a handheld accessory. By arranging a sewage tank in the machine body, the floor brush assembly is connected to the sewage tank through a first air duct, so that dust and sewage on surfaces such as the floor or carpet can be sucked into the sewage tank through the first air duct for collection, and the handheld accessory is connected to the sewage tank through a second air duct, so that dust and sewage on surfaces such as tabletops, sofas, curtains, car interiors, etc. can be sucked into the sewage tank through the second air duct for collection, thereby improving the suction efficiency; in actual use, the floor brush assembly and the handheld accessory are often used separately, so the first air duct and the second air duct need to be switched to engage with the sewage tank, and a rotatable sealing rotating part is provided at the junction of the first air duct, the second air duct and the sewage tank, and the sealing rotating part is rotated to switch the first air duct to the sewage tank or the second air duct to the sewage tank. The sealing rotating part is the output part, and the gear actuating structure can switch the machine body to the floor brush mode or the handheld mode by driving the sealing rotating part to rotate;

[0021] When the handheld mode is needed, the machine body is in a vertical state relative to the floor brush assembly, so that the gear actuating structure is in an initial state, the sealing rotating member blocks the first air duct, so that the second air duct is connected to the sewage tank, and dust and sewage can be collected in the sewage tank through the second air duct, and the air suction efficiency is high. When the floor brush mode is needed, the user applies force to the machine body to tilt the machine body relative to the floor brush assembly. The gear actuating structure is forced to drive the sealing rotating member to rotate, and the sealing rotating member blocks the second air duct, so that the first air duct is connected to the sewage tank, and dust and sewage can be collected in the sewage tank through the first air duct, and the air suction efficiency is high. The user only needs to adjust the machine body according to actual usage needs to automatically realize the floor brush mode and accessory mode. When the floor brush assembly needs to be used for cleaning, the user will tilt the machine body, so that the whole machine automatically switches to the floor brush mode. When the handheld accessory needs to be used for cleaning, the user does not need to tilt the body. The machine body is in a vertical state relative to the floor brush assembly, so that the whole machine automatically switches to the accessory mode, without the need for additional manual operation by the user, and the user experience is better. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] FIG1 is a schematic diagram of the three-dimensional structure of the gear actuating structure disclosed herein in a vertical state.

[0023] FIG2 is a schematic diagram of the three-dimensional structure of the first transmission gear in the present disclosure.

[0024] FIG3 is a schematic front view of the first transmission gear in the present disclosure.

[0025] FIG4 is a schematic diagram of the three-dimensional structure of the fixed gear in the present disclosure.

[0026] FIG5 is a schematic side view of the gear actuation structure of the present disclosure.

[0027] FIG6 is a schematic diagram of the three-dimensional structure of the gear actuating structure of the present disclosure in a tilted state.

[0028] FIG7 is a schematic diagram of the three-dimensional structure of a surface cleaning device in the present disclosure in an upright state.

[0029] FIG8 is a partially enlarged schematic diagram of point A in FIG7 of the present disclosure.

[0030] FIG9 is a schematic cross-sectional view of a surface cleaning device according to the present disclosure.

[0031] FIG10 is a schematic diagram of the three-dimensional structure of a surface cleaning device in the present disclosure in a tilted state.

[0032] As shown in the figure: 1. Fixed gear; 11. First tooth groove; 12. Second tooth groove; 13. Avoidance part; 14. Fourth tooth body; 2. First transmission gear; 21. First tooth body; 211. First tooth; 212. Second tooth; 22. Second tooth body; 23. Third tooth body; 24. Angle; 3. Second transmission gear; 4. Floor brush assembly; 41. First air duct; 5. Machine body; 6. Output part; 7. Handheld accessory; 71. Second air duct; 8. Sewage tank. Modes for Carrying Out the Invention

[0033] In order to better understand the present application, various aspects of the present application will be described in more detail with reference to the accompanying drawings. It should be understood that these detailed descriptions are merely descriptions of exemplary embodiments of the present application and are not intended to limit the scope of the present application in any way. Throughout the specification, the same reference numerals refer to the same elements.

[0034] In the drawings, the thickness, size and shape of objects have been slightly exaggerated for ease of explanation. The drawings are only examples and are not drawn strictly to scale.

[0035] It should also be understood that the terms “comprises,” “includes,” “has,” “includes,” and “including,” when used in this specification, indicate the presence of the described features, integers, steps, operations, elements, and / or parts, but do not exclude the presence or addition of one or more other features, integers, steps, operations, elements, parts, and / or combinations thereof. Example

[0036] As shown in Figures 1 to 7, the present application discloses a gear actuation structure of a surface cleaning device, including a fixed gear 1, a first transmission gear 2 and a second transmission gear 3. The fixed gear 1 is used to be mounted on the floor brush assembly 4 of the surface cleaning device, the first transmission gear 2 is used to be mounted on the body 5 of the surface cleaning device, and the second transmission gear 3 is used to be mounted on the output part 6 of the surface cleaning device. One side of the first transmission gear 2 is transmission-connected to the fixed gear 1, and the other side of the first transmission gear 2 is transmission-connected to the second transmission gear 3. When the body 5 is in a vertical state relative to the floor brush assembly 4, the vertical state refers to the body being vertical or tilted forward relative to the floor brush assembly, and the gear actuation structure and the output part 6 are in an initial state. When the body 5 rotates relative to the floor brush assembly 4, the first transmission gear 2 rotates on the fixed gear 1 and drives the second transmission gear 3 to rotate, so that the second transmission gear 3 drives the output part 6 to rotate and output;

[0037] The first transmission gear 2 of the gear actuation structure is installed on the machine body 5. When the machine body 5 rotates, it will drive the first transmission gear 2 to rotate. The second transmission gear 3 of the gear actuation structure is installed on the output part 6 of the surface cleaning device. The output part 6 refers to the component that rotates due to the output of the gear actuation structure. The output part 6 can be a control valve for controlling the opening and closing of the clean water tank or a control switch for controlling the start and stop of the floor brush assembly 4. The fixed gear 1 of the gear actuation structure is installed on the floor brush assembly 4. The fixed gear 1 always maintains the initial state. The first transmission gear 2 is respectively connected to the fixed gear 1 and the second transmission gear 3. When the machine When the body 5 rotates relative to the floor brush assembly 4, the body 5 drives the first transmission gear 2 to rotate along the fixed gear 1, and the first transmission gear 2 drives the second transmission gear 3 to drive the output part 6 to rotate. Under the action of the gear actuation structure, the output part 6 can rotate to realize function switching. The output part 6 maintains the initial state when the body 5 is in a vertical state relative to the floor brush assembly 4. The output part 6 rotates when the body 5 is in a tilted state relative to the floor brush assembly 4 to switch the function. The user only needs to rotate the body 5 to realize the automatic switching function, and the user does not need to perform additional manual operation. The user experience is better, and the gear actuation structure is compact, automatic, efficient and reliable.

[0038] More specifically, as shown in Figures 1, 2 and 3, the first transmission gear 2 is provided with a first tooth body 21 and a second tooth body 22. The first transmission gear 2 is meshed with the fixed gear 1 through the first tooth body 21 for transmission, and the first transmission gear 2 is meshed with the second transmission gear 3 through the second tooth body 22 for transmission. The first transmission gear 2 is respectively connected to the fixed gear 1 and the second transmission gear 3 through the first tooth body 21 and the second tooth body 22, and the meshing effect is respectively exerted through the first tooth body 21 and the second tooth body 22, so that the transmission coordination efficiency is higher and the transmission coordination is more reliable.

[0039] More specifically, as shown in Figures 2 and 3, the size of the first tooth body 21 is larger than the size of the second tooth body 22. The sizes of the first tooth body 21 and the second tooth body 22 are different, so that the rotation angles of the first transmission gear 2 and the second transmission gear 3 are different, so that the first transmission gear 2 can drive the second transmission gear 3 to rotate. The first transmission gear 2 is transmitted and matched with the fixed gear 1 through the first tooth body 21. The size of the first tooth body 21 is set to be larger, so that the relative rotation angle of the first transmission gear 2 and the fixed gear 1 is smaller, and the strength of the first tooth body 21 is also better. The first transmission gear 2 is transmitted and matched with the second transmission gear 3 through the second tooth body 22. The size of the second tooth body 22 is set to be smaller, so that the relative rotation angle of the first transmission gear 2 and the second transmission gear 3 is larger, and the transmission matching efficiency is higher.

[0040] More specifically, as shown in Figures 2 to 4, the first tooth body 21 includes a first tooth 211 and a second tooth 212. The first tooth body 21 cooperates with the first tooth 211 and the second tooth 212 to transmit to the fixed gear 1. The fixed gear 1 is provided with a first tooth groove 11 and a second tooth groove 12. The first tooth groove 11 is adapted to the first tooth 211, and the second tooth groove 12 is adapted to the second tooth 212, so that the first tooth 211 rotates along the first tooth groove 11 and the second tooth 212 rotates along the second tooth groove 12, thereby improving the transmission matching efficiency and reliability.

[0041] More specifically, as shown in Figures 1 to 4 and 6, the first transmission gear 2 is further provided with a third tooth 23, and the fixed gear 1 is provided with a avoidance portion 13 adapted to form an idle stroke state with the third tooth 23, and a fourth tooth 14 driving the third tooth 23 to rotate, the third tooth 23 is located on one side of the fourth tooth 14, and the first tooth 21 can enter or disengage from the other side of the fourth tooth 14, and an angle is set between the third tooth 23 and the first tooth 21. In the process of rotating to the vertical state, the third tooth 23 moves from the avoidance portion 13 to the fourth tooth 14 and is in contact with the fourth tooth 14. The tooth bodies 14 are offset from each other, and the fourth tooth body 14 drives the third tooth body 23 to rotate, thereby driving the first tooth body 21 to enter the other side of the fourth tooth body 14. During the reverse rotation to the tilted state, the fourth tooth body 14 drives the first tooth body 21 that enters the other side of the fourth tooth body 14 to drive the first transmission gear 2 to rotate. The rotation of the first transmission gear 2 drives the second transmission gear 3 to rotate. At the same time, the third tooth body 23 enters the avoidance portion 13 to form an idle stroke state. After the tilt exceeds a certain angle, the first tooth body 21 and the fourth tooth body 14 disengage from each other to maintain the idle stroke state without interfering with each other.

[0042] A third tooth body 23 is provided on the first transmission gear 2, and the first transmission gear 2 is connected to the fixed gear 1 through the cooperation of the first tooth body 21 and the third tooth body 23. Considering that the output part 6 is generally controlled by rotation to control two states, such as controlling the opening and closing of the clean water tank, or controlling the start and stop of the floor brush assembly 4, or controlling the switching of the floor brush assembly 4 and the handheld accessory 7, the output part 6 can often only switch between two specific positions. Therefore, the second transmission gear 3 is required to stop when it rotates to two specific positions, then the first transmission gear 2 also needs to stop rotating in advance, that is, the first transmission gear 2 and the fixed gear 1 need to be disengaged, and the first transmission gear 2 and the second transmission gear 3 both rotate synchronously with the body, so that the second transmission gear 3 stays at a specific position. Therefore, this In the scheme, a third tooth body 23 is provided, and a avoiding portion 13 and a fourth tooth body 14 are provided on the fixed gear 1. The avoiding portion 13 is adapted to the third tooth body 23 and forms an idle stroke state. The avoiding portion 13 refers to an idle stroke section in which the third tooth body 23 is avoided so that the third tooth body 23 can pass smoothly. In this scheme, the avoiding portion 13 is a depression with an L-shaped cross section, and the bottom of the avoiding portion 13 is arc-shaped, so that the first transmission gear 2 and the second transmission gear 3 rotate synchronously with the random body. An angle is set between the third tooth body 23 and the first tooth body 21, and the fourth tooth body 14 is located between the first tooth body 23 and the third tooth body 21. The first transmission gear 2 can switch the first tooth body 21 to cooperate with the fourth tooth body 14 or the third tooth body 23 to cooperate with the fourth tooth body 14 during movement;

[0043] In the process of rotating to the vertical state, the third tooth body 23 moves from the avoiding portion 13 to the fourth tooth body 14 and contacts the fourth tooth body 14. The fourth tooth body 14 drives the third tooth body 23 to rotate to drive the first tooth body 21 to enter the other side of the fourth tooth body 14. The fourth tooth body 14 lifts the third tooth body 23, and the first tooth body 21 enters the other side of the fourth tooth body 14 to prepare for meshing. The first transmission gear 2 continues to rotate in the current direction so that the first tooth body 21 meshes with the fixed gear 1. The first transmission gear 2 can drive the second transmission gear 3 to rotate to a specific position in the vertical state. When it rotates in the opposite direction to the tilted state, During the tilting state, the fourth tooth body 14 drives the first tooth body 21 on the other side of the fourth tooth body 14 to drive the first transmission gear 2 to rotate in the opposite direction. The first transmission gear 2 drives the second transmission gear 3 to rotate while the third tooth body 23 enters the avoidance portion 13 to form an idle stroke state. The first transmission gear 2 and the second transmission gear 3 both rotate synchronously with the random body 5. After the tilt exceeds a certain angle, the first tooth body 21 and the fourth tooth body 14 disengage from each other to maintain the idle stroke state without interfering with each other. The second transmission gear 3 stays at a specific position when in the tilted state, thereby improving the accuracy of the gear actuation mechanism.

[0044] When the first transmission gear 2 rotates relative to the fixed gear 1, the first tooth 21 or the third tooth 23 is switched to cooperate with the fixed gear 1 through the fourth tooth 14. Considering that the first transmission gear 2 will be subjected to the resistance of the second transmission gear 3 and the output part 6 during the rotation and reset, the first transmission gear 2 and the fixed gear 1 are not meshed normally but slipped, and the angle is inaccurate, resulting in the first transmission gear 2 and the fixed gear 1 not meshing smoothly again, which easily causes the gears to collide and misalign. Therefore, this solution provides the fourth tooth 14 on the fixed gear 1. When the machine body 5 rotates and tilts relative to the floor brush assembly 4, the first transmission gear 2 first passes through the first tooth 21 and The fixed gear 1 is engaged in transmission, and the first transmission gear 2 drives the second transmission gear 3 to rotate through the second tooth body 22. When the second transmission gear 3 drives the output part 6 to rotate to a specific position, the first tooth body 21 abuts against the fourth tooth body 14, causing the first transmission gear 2 to rotate relative to the fixed gear 1, the first tooth body 21 is disengaged from the fixed gear 1, and the third tooth body 23 is engaged with the fixed gear 1, and the first transmission gear 2 slides along the fixed gear 1 through the third tooth body 23, so that the second transmission gear 3 and the output part 6 stay in this specific position. In the process of the machine body 5 rotating and resetting relative to the floor brush assembly 4, the third tooth body 23 slides along the avoidance part 13 to abut against the fourth tooth body 14, so that the first transmission gear 2 rotates and resets relative to the fixed gear 1, the third tooth body 23 is disengaged from the fixed gear 1, and the first tooth body 21 is re-engaged with the fixed gear 1. The first transmission gear 2 can drive the second transmission gear 3 to rotate and reset, thereby improving the transmission efficiency between gears.

[0045] More specifically, as shown in Figures 2 to 5, the first tooth body 21 and the third tooth body 23 are staggered, and the first tooth body 21 and the third tooth body 23 form a multi-layer tooth structure. The first tooth body 21 and the third tooth body 23 are staggered on the first transmission gear 2, and the first tooth body 21 and the second tooth body 22 form a multi-layer tooth structure, so that the first transmission gear 2 and the fixed gear 1 are always in meshing, and the multi-layer tooth structure is conducive to reducing the size of the first transmission gear 2, making the overall structure more compact and reliable.

[0046] More specifically, as shown in Figures 2 and 3, the first transmission gear 2, the first tooth body 21, the second tooth body 22 and the third tooth body 23 are an integrally formed structure. The first tooth body 21, the second tooth body 22 and the third tooth body 23 are integrally formed on the first transmission gear 2, so that the strength of the first tooth body 21, the second tooth body 22 and the third tooth body 23 is better, and the structure is more compact, simplifying the installation steps.

[0047] More specifically, as shown in Figure 4, the first tooth groove 11, the second tooth groove 12 and the avoidance portion 13 are all arc-shaped, so that the rotation of the first tooth body 21 and the second tooth body 22 is smoother and the rotation efficiency is higher. The lengths of the first tooth groove 11 and the second tooth groove 12 are both shorter than the length of the avoidance portion 13. The path for the first transmission gear 2 to engage with the fixed gear 1 through the third tooth body 23 is longer, so that the body 5 drives the first transmission gear 2 to rotate in a larger angle range, which is more comfortable for users when using it. Example

[0048] As shown in Figures 1 to 7 and 9, this embodiment provides a surface cleaning device based on Example 1, including a body 5 and a floor brush assembly 4, the floor brush assembly 4 is rotatably mounted on the bottom of the body 5, and the floor brush assembly 4 is arranged to be mounted on the bottom of the body 5. The user can drive the floor brush assembly 4 to move on the ground through the body 5 to clean and absorb dirt on the ground. The floor brush assembly 4 is rotatably connected to the body 5, and the user can apply force to the body 5 to tilt the body 5 relative to the floor brush assembly 4. Therefore, the body 5 has a vertical state and a tilted state relative to the floor brush assembly 4. The user can rotate the body 5 to a suitable angle according to his or her own height or usage habits, so that the body 5 and the floor brush assembly 4 can be easily pushed, which is more labor-saving and comfortable to use.

[0049] As shown in FIG7 , the surface cleaning device further comprises the gear actuation structure of embodiment 1. The first transmission gear 2 in the gear actuation structure is mounted on the machine body 5. When the machine body 5 rotates, the first transmission gear 2 is driven to rotate. The second transmission gear 3 in the gear actuation structure is mounted on the output portion 6 of the surface cleaning device. The output portion 6 refers to a component that rotates due to the output of the gear actuation structure. The output portion 6 may be a control valve for controlling the opening and closing of the clean water tank or a control switch for controlling the start and stop of the floor brush assembly 4. The fixed gear 1 in the gear actuation structure is mounted on the floor brush assembly 4, and the fixed gear 1 always maintains its initial state.

[0050] When the body 5 rotates relative to the floor brush assembly 4, the body 5 drives the first transmission gear 2 to rotate along the fixed gear 1, and the first transmission gear 2 drives the second transmission gear 3 to drive the output part 6 to rotate. Under the action of the gear actuation structure, the output part 6 can rotate to realize function switching. The output part 6 maintains the initial state when the body 5 is in a vertical state relative to the floor brush assembly 4. The output part 6 rotates when the body 5 is in a tilted state relative to the floor brush assembly 4 to switch the function. The user only needs to rotate the body 5 to realize the automatic switching function, and the user does not need additional manual operation. The user experience is better, and the gear actuation structure is compact, automatic, efficient and reliable. Example

[0051] As shown in Figures 1 to 10, this embodiment provides a surface cleaning device based on Example 2. The structure of the surface cleaning device is the same as that of Example 2, wherein a handheld accessory 7 is installed on the body 5, a sewage tank 8 is provided in the body 5, a first air duct 41 is provided between the floor brush assembly 4 and the sewage tank 8, and a second air duct 71 is provided between the handheld accessory 7 and the sewage tank 8. The body 5 can clean the tabletop, sofa, curtains, car interiors, etc. above the ground through the handheld accessory 7. By arranging the sewage tank 8 in the body 5, the floor brush assembly 4 is connected with the sewage tank 8 through the first air duct 41, so that dust and sewage on surfaces such as the ground or carpet can be sucked into the sewage tank 8 through the first air duct 41 and collected, and the handheld accessory 7 is connected with the sewage tank 8 through the second air duct 71, so that dust and sewage on surfaces such as the tabletop, sofa, curtains, car interiors, etc. can be sucked into the sewage tank 8 through the second air duct 71 and collected, thereby improving the suction efficiency;

[0052] A sealing rotating member is provided at the junction of the first air duct 41, the second air duct 71 and the sewage tank 8. The sealing rotating member is configured as the output part 6. In actual use, the floor brush assembly 4 and the handheld accessory 7 are often used separately. Therefore, the first air duct 41 and the second air duct 71 need to be switched to engage with the sewage tank 8. By providing a rotatable sealing rotating member at the junction of the first air duct 41, the second air duct 71 and the sewage tank 8, the first air duct 41 is switched to be connected to the sewage tank 8 or the second air duct 71 is switched to be connected to the sewage tank 8 by rotating the sealing rotating member. The sealing rotating member is the output part 6, and the gear actuating structure can switch the body 5 to the floor brush mode or the handheld mode by driving the sealing rotating member to rotate;

[0053] When the handheld mode is needed, the machine body 5 is in a vertical state relative to the floor brush assembly 4, so that the gear actuating structure is in an initial state, the sealing rotating member blocks the first air duct 41, so that the second air duct 71 is connected to the sewage tank 8, and dust and sewage can be collected in the sewage tank 8 through the second air duct 71, and the air suction efficiency is high. When the floor brush mode is needed, the user applies force to the machine body 5 to make the machine body 5 in an inclined state relative to the floor brush assembly 4. The gear actuating structure is forced to drive the sealing rotating member to rotate, and the sealing rotating member blocks the second air duct 71, so that the first air duct 41 is connected to the sewage tank 8, and dust and sewage can be collected in the sewage tank 8 through the first air duct 41, and the air suction efficiency is high.

[0054] The user only needs to adjust the body 5 according to actual usage needs to automatically realize the floor brush mode and accessory mode. When the floor brush assembly 4 needs to be used for cleaning, the user will tilt the body 5, so that the whole machine automatically switches to the floor brush mode. When the handheld accessory 7 needs to be used for cleaning, the user does not need to tilt the body 5. The body 5 is in a vertical state relative to the floor brush assembly 4, so that the whole machine automatically switches to the accessory mode without the need for additional manual operation by the user, and the user experience is better.

[0055] The present invention is not limited to the above-mentioned optimal implementation mode. Anyone can derive other forms of products under the inspiration of the present invention. However, no matter what changes are made in the shape or structure, any technical solution that is the same or similar to that of the present application falls within the scope of protection of the present invention.

Claims

1. A gear actuating structure of a surface cleaning device, characterized in that: The invention comprises a fixed gear (1), a first transmission gear (2) and a second transmission gear (3), wherein the fixed gear (1) is used to be mounted on a floor brush assembly (4) of a surface cleaning device, the first transmission gear (2) is used to be mounted on a body (5) of the surface cleaning device, and the second transmission gear (3) is used to be mounted on an output part (6) of the surface cleaning device. One side of the first transmission gear (2) is transmission-connected to the fixed gear (1), and the other side of the first transmission gear (2) is transmission-connected to the second transmission gear (3). When the body (5) is in a vertical state relative to the floor brush assembly (4), the gear actuating structure and the output part (6) are in an initial state. When the body (5) is rotated relative to the floor brush assembly (4) and is in an inclined state, the first transmission gear (2) rotates on the fixed gear (1) and drives the second transmission gear (3) to rotate, so that the second transmission gear (3) drives the output part (6) to rotate and output.

2. The gear actuating structure of a surface cleaning device according to claim 1, characterized in that: The first transmission gear (2) is provided with a first tooth body (21) and a second tooth body (22); the first transmission gear (2) is meshed with the fixed gear (1) for transmission via the first tooth body (21); and the first transmission gear (2) is meshed with the second transmission gear (3) for transmission via the second tooth body (22).

3. The gear actuating structure of a surface cleaning device according to claim 2, characterized in that: The size of the first tooth body (21) is greater than the size of the second tooth body (22).

4. The gear actuating structure of a surface cleaning device according to claim 2, characterized in that: The first transmission gear (2) is further provided with a third tooth body (23); the fixed gear (1) is provided with a avoiding portion (13) adapted to form an idle stroke state with the third tooth body (23); and a fourth tooth body (14) driving the third tooth body (23) to rotate; the third tooth body (23) is located on one side of the fourth tooth body (14), and the first tooth body (21) can enter or leave the fourth tooth body (14) on the other side; an angle is set between the third tooth body (23) and the first tooth body (21); in the process of rotating to the vertical state, the third tooth body (23) moves from the avoiding portion (13) to the fourth tooth body (14) and is in contact with the fourth tooth body (14). The fourth tooth body (14) drives the third tooth body (23) to rotate so as to drive the first tooth body (21) to enter the other side of the fourth tooth body (14). During the reverse rotation to the tilted state, the fourth tooth body (14) drives the first tooth body (21) to enter the other side of the fourth tooth body (14) to drive the first transmission gear (2) to rotate. The rotation of the first transmission gear (2) drives the second transmission gear (3) to rotate. At the same time, the third tooth body (23) enters the avoidance portion (13) to form an idle stroke state. After the tilt exceeds a certain angle, the first tooth body (21) and the fourth tooth body (14) are separated from each other to maintain the idle stroke state without interfering with each other.

5. The gear actuating structure of a surface cleaning device according to claim 4, characterized in that: The first tooth body (21) and the third tooth body (23) are distributed along the axial direction, and the first tooth body (21) and the third tooth body (23) form an axial multi-layer tooth structure.

6. The gear actuating structure of a surface cleaning device according to claim 4, characterized in that: The first tooth body (21) comprises a first tooth (211) and a second tooth (212); the fixed gear (1) is provided with a first tooth groove (11) and a second tooth groove (12); the first tooth groove (11) is adapted to the first tooth (211); the second tooth groove (12) is adapted to the second tooth (212); and the fourth tooth body (14) is located between the first tooth groove (11) and the avoidance portion (13).

7. The gear actuating structure of a surface cleaning device according to claim 6, characterized in that: The first tooth groove (11), the second tooth groove (12) and the avoidance portion (13) are all arc-shaped, and the lengths of the first tooth groove (11) and the second tooth groove (12) are both shorter than the length of the avoidance portion (13).

8. The gear actuating structure of a surface cleaning device according to claim 4, characterized in that: The first transmission gear (2), the first tooth body (21), the second tooth body (22) and the third tooth body (23) are an integrally formed structure.

9. A surface cleaning device, comprising a body (5) and a floor brush assembly (4), wherein the floor brush assembly (4) is rotatably mounted on the bottom of the body (5), characterized in that: It also comprises a gear actuating structure of a surface cleaning device as claimed in any one of claims 1 to 8, wherein the fixed gear (1) is mounted on the floor brush assembly (4), the first transmission gear (2) is rotatably mounted on the machine body (5), and the second transmission gear (3) is mounted on the output portion (6) of the surface cleaning device.

10. A surface cleaning device according to claim 9, characterized in that: A handheld accessory (7) is mounted on the machine body (5), a sewage tank (8) is arranged inside the machine body (5), a first air duct (41) is arranged between the floor brush assembly (4) and the sewage tank (8), a second air duct (71) is arranged between the handheld accessory (7) and the sewage tank (8), a sealing rotating member is arranged at the junction of the first air duct (41), the second air duct (71) and the sewage tank (8), and the sealing rotating member is configured as an output portion (6). When the machine body (5) is in a vertical state relative to the floor brush assembly (4), the gear actuating structure is in an initial state, the sealing rotating member connects the second air duct (71) and the sewage tank (8) and blocks the first air duct (41), so that the handheld accessory (7) is in a use state. When the machine body (5) is in a tilted state relative to the floor brush assembly (4), the gear actuating structure is driven by force to drive the sealing rotating member to rotate, the sealing rotating member connects the first air duct (41) and the sewage tank (8) and blocks the second air duct (71), so that the floor brush assembly (4) is in a use state.

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