Lifting mechanism of cleaning device

Abstract

The invention relates to the technical field of cleaning equipment, in particular to a cleaning device lifting mechanism which comprises a first gear, a second gear and an output shaft, the first gear is meshed with the second gear, one end of the output shaft is connected with the first gear, and the other end of the output shaft is externally connected with a cleaning device. When the first gear rotates in the first direction, the first gear drives the cleaning device to descend relative to the second gear, and when the first gear rotates in the second direction opposite to the first direction, the first gear drives the cleaning device to ascend relative to the second gear. The problem that a traditional lifting mechanism is difficult to meet the requirement that the sweeping robot needs to have different lifting speeds for the cleaning device under different conditions is solved.

Description

Technical Field

[0001] The present application relates to the technical field of cleaning equipment, and in particular to a lifting mechanism of a cleaning device. Background Art

[0002] Sweeping robots can replace human labor in cleaning the floor, liberate labor, and reduce the burden on cleaning staff. They can be widely used in rooms, shopping malls, factories, stations, airports and other usage scenarios.

[0003] Generally, a sweeping robot is equipped with a cleaning device for cleaning the floor. A conventional sweeping robot generally drives the cleaning device to rise and fall by a telescopic mechanism, but the telescopic mechanism cannot meet the sweeping robot's requirements for different lifting speeds of the cleaning device in different situations. For example, when the sweeping robot needs to cross an obstacle, the cleaning device needs to rise quickly, while when the sweeping robot needs to perform fine cleaning, the cleaning device needs to descend slowly. Summary of the invention

[0004] The present application provides a cleaning device lifting mechanism, which aims to solve the problem that a traditional lifting mechanism is difficult to meet the requirements of a sweeping robot for a cleaning device to have different lifting speeds in different situations.

[0005] In order to solve the above technical problems, the present application proposes a cleaning device lifting mechanism, the cleaning device lifting mechanism comprising: a first gear, a second gear, and an output shaft;

[0006] The first gear is meshed with the second gear, one end of the output shaft is connected to the first gear, and the other end of the output shaft is externally connected to a cleaning device, and when the first gear rotates in a first direction, the first gear drives the cleaning device to descend relative to the second gear through gear meshing;

[0007] When the first gear rotates in a second direction opposite to the first direction, the first gear drives the cleaning device to rise relative to the second gear through gear meshing.

[0008] Furthermore, the cleaning device lifting mechanism also includes a transmission shaft, and a first through hole matching the shape of the transmission shaft is provided at the center position of the first gear, and the transmission shaft passes through the first through hole, so that the first gear cannot generate relative rotation with the transmission shaft, but the first gear can slide along the transmission shaft.

[0009] Furthermore, the cleaning device lifting mechanism also includes a first transmission gear, the first transmission gear is fixedly assembled on the transmission shaft, and the first transmission gear is concentrically arranged with the first gear.

[0010] Furthermore, the cleaning device lifting mechanism also includes a driving device, and the driving device is used to drive the first transmission gear to rotate along the first direction and the second direction.

[0011] Furthermore, the cleaning device lifting mechanism also includes a second transmission gear and a third transmission gear, the second transmission gear and the third transmission gear are concentrically arranged and fixedly connected, the second transmission gear is meshed with the output end of the driving device, and the third transmission gear is meshed with the first transmission gear, and the power of the driving device is transmitted to the first transmission gear through the second transmission gear and the third transmission gear.

[0012] Further, the second transmission gear and the third transmission gear have different numbers of teeth.

[0013] Furthermore, the output shaft is provided with a first slot body, and the transmission shaft passes through the first gear and then extends into the first slot body.

[0014] Furthermore, a limiting portion is provided at one end of the transmission shaft away from the first transmission gear, and when the first gear descends to a limit position along the transmission shaft, the limiting portion conflicts with the first gear.

[0015] Furthermore, the cleaning device lifting mechanism also includes an induction switch and a trigger rod, wherein the trigger rod is located above the first gear. When the first gear rises to a preset position along the transmission shaft, the first gear pushes the trigger rod to move. After the induction switch detects the movement of the trigger rod, it controls the driving device to stop working.

[0016] Furthermore, the cleaning device lifting mechanism further includes a resistance component, and the resistance component is used to limit the one-way rotation of the second gear.

[0017] The beneficial effect of the present application is as follows: in the cleaning device lifting mechanism provided in the present application, the cleaning device lifting mechanism includes a first gear, a second gear, and an output shaft, the first gear and the second gear are meshed, one end of the output shaft is connected to the first gear, and the other end of the output shaft is externally connected to the cleaning device, when the first gear rotates in a first direction, the first gear drives the cleaning device to descend relative to the second gear, and when the first gear rotates in a second direction opposite to the first direction, the first gear drives the cleaning device to rise relative to the second gear. By connecting the external cleaning device to the first gear and then controlling the rotation speed of the first gear, the speed at which the first gear drives the cleaning device to rise and fall can be adjusted to meet the requirements of the sweeping robot for different lifting speeds of the cleaning device in different situations. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work. Among them:

[0019] Figure 1 It is a three-dimensional structural schematic diagram of a lifting mechanism of a cleaning device according to an embodiment of the present invention;

[0020] Figure 2 is a cross-sectional view of a lifting mechanism of a cleaning device according to an embodiment of the present invention;

[0021] Figure 3 It is a schematic diagram of the three-dimensional structure of the lifting mechanism of the cleaning device of one embodiment of the present invention without the box body;

[0022] Figure 4 FIG. 4 is an exploded view of a first gear portion and a second gear portion according to an embodiment of the present invention.

[0023] Explanation of the accompanying drawings: 100, first gear; 110, first through hole; 200, transmission shaft; 210, first transmission gear; 220, limiting portion; 300, second gear; 310, first fixed shaft; 320, resistance component; 400, second transmission gear; 410, third transmission gear; 500, induction switch; 510, trigger rod; 600, fixed bearing; 700, output shaft; 710, first slot; 800, driving device; 900, box. DETAILED DESCRIPTION

[0024] In order to make the purpose, technical solution and advantages of the present application more clearly understood, the present application is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and are not used to limit the present application.

[0025] It will be understood by those skilled in the art that, unless expressly stated, the singular forms "a", "an", "above", and "the" used herein may also include plural forms. It should be further understood that the term "comprising" used in the specification of the present application refers to the presence of features, integers, steps, operations, elements, modules, modules and / or components, but does not exclude the presence or addition of one or more other features, integers, steps, operations, elements, modules, modules, components and / or groups thereof. It should be understood that when we refer to an element as being "connected" or "coupled" to another element, it may be directly connected or coupled to the other element, or there may be an intermediate element. In addition, the "connection" or "coupling" used herein may include wireless connection or wireless coupling. The term "and / or" used herein includes all or any module and all combinations of one or more associated listed items.

[0026] It will be understood by those skilled in the art that, unless otherwise defined, all terms (including technical and scientific terms) used herein have the same meaning as those generally understood by those skilled in the art to which this application belongs. It should also be understood that terms such as those defined in general dictionaries should be understood to have meanings consistent with those in the context of the prior art, and will not be interpreted with idealized or overly formal meanings unless specifically defined as here.

[0027] like Figure 3 and Figure 4 As shown, the present application provides a cleaning device lifting mechanism, which includes a first gear 100, a second gear 300, and an output shaft 700. The first gear 100 and the second gear 300 are meshed with each other, one end of the output shaft 700 is connected to the first gear 100, and the other end of the output shaft 700 is externally connected to a cleaning device. When the first gear 100 rotates in a first direction, the first gear 100 drives the cleaning device to descend relative to the second gear 300 through gear meshing. When the first gear 100 rotates in a second direction opposite to the first direction, the first gear 100 drives the cleaning device to rise relative to the second gear 300 through gear meshing.

[0028] In a specific embodiment, the first gear 100 is in the shape of a disk, the first gear 100 is arranged horizontally, the external cleaning device is connected to the first gear 100, and the cleaning device lifting mechanism further includes a transmission shaft 200, which is arranged vertically and runs through the center of the first gear 100. The transmission shaft 200 serves as a support and guide component of the first gear 100, and its position is fixed to ensure that the first gear 100 can stably slide up and down along its axis. On the other hand, the transmission shaft 200 is also a component that drives the first gear 100 to rotate. The second gear 300 is roughly cylindrical, and the second gear 300 is vertically arranged on the side of the first gear 100. The second gear 300 is fixed in the vertical direction. The second gear 300 is meshed with the first gear 100, and the number of teeth meshed between the second gear 300 and the first gear 100 can be one or more. The first direction and the second direction are two opposite rotation directions, corresponding to the descending and ascending actions of the cleaning device, respectively. In this embodiment, the first direction is the direction in which the first gear 100 rotates clockwise in the horizontal plane. When the first gear 100 rotates in the first direction, the second gear 300 can be rotated accordingly, so that the first gear 100 is descended in the vertical direction due to the gravity and the force of the second gear 300. The second direction is the direction in which the first gear 100 rotates counterclockwise in the horizontal plane. When the first gear 100 rotates in the second direction, the first gear 100 can be forced to drive the cleaning device to ascend in the vertical direction by limiting the rotation of the second gear 300. The way to limit the rotation of the second gear 300 can be to increase the inertia of the second gear 300 or to set a specific component to limit the rotation of the second gear 300.

[0029] The output shaft 700 is cylindrical and is arranged on the lower surface of the first gear 100. The output shaft 700 is concentrically arranged with the first gear 100 and is formed as one piece. The output shaft 700 is used to connect the first gear 100 and the cleaning device, and transmit the linear motion of the first gear 100 to the cleaning device, so that the cleaning device can move in the vertical direction as the first gear 100 rises and falls.

[0030] To sum up, the cleaning device lifting mechanism in the present application realizes the function of the first gear 100 driving the external cleaning device to achieve lifting and lowering through the coordinated action of the first gear 100 and the second gear 300. By controlling the rotation speed of the first gear 100, the speed at which the first gear 100 drives the cleaning device to rise and fall in the vertical direction can be controlled to meet the requirements of the sweeping robot for different lifting and lowering speeds of the cleaning device in different situations.

[0031] like Figure 4 As shown, the cleaning device lifting mechanism further includes a resistance component 320 , and the resistance component 320 is used to limit the second gear 300 from rotating in one direction.

[0032] In a specific embodiment, the resistance component 320 is used to limit the free rotation of the second gear 300, so that the second gear 300 can only rotate in a single direction. In this embodiment, the resistance component 320 is a one-way bearing, which is sleeved in the second gear 300, and the one-way bearing is concentrically arranged with the second gear 300. The one-way bearing can limit the second gear 300 to rotate in only one direction. The cleaning device lifting mechanism also includes a first fixed shaft 310, which is vertically arranged, and the position of the first fixed shaft 310 is fixed. The first fixed shaft 310 vertically penetrates the second gear 300 and the one-way bearing, so that the second gear 300 and the one-way bearing can rotate around the first fixed shaft 310. In this embodiment, when the driving gear 100 rotates in the first direction, the driven gear 300 rotates with the driving gear 100. At this time, the resistance component will not limit the rotation of the driven gear 300, and the driving gear 100 is driven to drive the cleaning device to descend along the transmission shaft 200. When the driving gear 100 rotates in a second direction opposite to the first direction, the resistance component restricts the rotation of the driven gear 300 to force the driving gear 100 to drive the cleaning device to rise along the transmission shaft 200 .

[0033] like Figure 2 As shown, a first through hole 110 matching the shape of the transmission shaft 200 is provided at the center of the first gear 100, and the transmission shaft 200 passes through the first through hole 110, so that the first gear 100 cannot generate relative rotation with the transmission shaft 200, but the first gear 100 can slide along the transmission shaft 200.

[0034] In a specific embodiment, the first through hole 110 is located at the center of the first gear 100, the transmission shaft 200 is irregular, and the shape of the first through hole 110 is precisely matched with the shape of the transmission shaft 200. This shape matching design ensures that the transmission shaft 200 can drive the first gear 100 to rotate synchronously, avoiding relative rotation between the two, thereby ensuring the accuracy of power transmission. At the same time, the connection method between the transmission shaft 200 and the first gear 100 allows the first gear 100 to slide freely on the transmission shaft 200 along its axial direction, which is an important condition for realizing the lifting function of the first gear 100.

[0035] In summary, the design of precise matching between the first through hole 110 and the transmission shaft 200 improves the connection stability and power transmission efficiency between the first gear 100 and the transmission shaft 200, and avoids energy loss caused by relative rotation. The characteristic of allowing the first gear 100 to slide on the transmission shaft 200 provides the necessary freedom of movement for the lifting and lowering movement of the first gear 100, so that the first gear 100 can move flexibly along the direction of the transmission shaft 200.

[0036] like Figure 3As shown, the cleaning device lifting mechanism further includes a first transmission gear 210 . The first transmission gear 210 is fixedly assembled on the transmission shaft 200 . The first transmission gear 210 is concentrically arranged with the first gear 100 .

[0037] In a specific embodiment, the first transmission gear 210 is an important component of the transmission system, which is fixedly assembled on the transmission shaft 200. The first transmission gear 210 is disc-shaped, and the first transmission gear 210 is arranged parallel to the first gear 100 and spaced apart. The first transmission gear 210 is arranged concentrically with the first gear 100. The first transmission gear 210 is used to transmit the external driving force to the transmission shaft 200, and then to the first gear 100 through the transmission shaft 200. The concentric arrangement of the first transmission gear 210 and the first gear 100 ensures the stability of the power during the transmission process and reduces the additional stress and energy loss caused by eccentricity.

[0038] In summary, by concentrically arranging the first transmission gear 210 and the first gear 100 on the transmission shaft 200, energy loss and the probability of mechanical failure during power transmission are reduced, so that the cleaning device lifting mechanism can operate more stably and reliably.

[0039] like Figure 1 As shown, the cleaning device lifting mechanism further includes a driving device 800, and the driving device 800 is used to drive the first transmission gear 210 to rotate along the first direction and the second direction.

[0040] In a specific embodiment, the driving device 800 is the power source of the entire cleaning device lifting mechanism. The driving device provides rotational power for the first transmission gear 210 and can control the first transmission gear 210 to rotate in a predetermined first direction and a second direction. The driving device 800 can be in various forms, such as an electric motor, etc. In this embodiment, the driving device 800 is a horizontally arranged motor. The torque and speed output by the driving device 800 can be adjusted according to actual needs to meet the lifting requirements in different situations.

[0041] In summary, by controlling the output state of the driving device 800, the motion state of the first gear 100 can be accurately controlled to achieve a high degree of automation in the working process.

[0042] like Figure 3As shown, the cleaning device lifting mechanism also includes a second transmission gear 400 and a third transmission gear 410, which are concentrically arranged and fixedly connected, and the second transmission gear 400 is meshed with the output end of the driving device 800, and the third transmission gear 410 is meshed with the first transmission gear 210. The power of the driving device 800 is transmitted to the first transmission gear 210 through the second transmission gear 400 and the third transmission gear 410, and the second transmission gear 400 and the third transmission gear 410 have different numbers of teeth.

[0043] In a specific embodiment, the second transmission gear 400 and the third transmission gear 410 are both disc-shaped, and the second transmission gear 400 and the third transmission gear 410 are concentrically arranged and integrally formed, and the second transmission gear 400 and the third transmission gear 410 play the role of intermediate transmission and speed change. The second transmission gear 400 is meshed with the output end of the driving device 800, receives the power output by the driving device 800, and then transmits the power to the third transmission gear 410 through a fixed connection, and the third transmission gear 410 is then meshed with the first transmission gear 210, and transmits the power to the first transmission gear 210, thereby driving the operation of the entire cleaning device lifting mechanism.

[0044] In the actual transmission system, the number of teeth of the second transmission gear 400 and the third transmission gear 410 can be designed and selected as needed. For example, if it is necessary to reduce the output speed of the driving device 800 and increase the torque, the number of teeth of the second transmission gear 400 can be selected to be greater than the number of teeth of the third transmission gear 410, so that in the power transmission process of the driving device 800, the effect of deceleration and torque increase can be achieved, so that the first transmission gear 210 can obtain a larger torque to drive the first gear 100, thereby meeting the power demand of the cleaning device lifting mechanism when lifting a heavier load. On the contrary, if it is necessary to increase the lifting speed of the first gear 100, the number of teeth of the second transmission gear 400 can be selected to be less than the number of teeth of the third transmission gear 410 to achieve the purpose of speed increase. This method of realizing variable speed transmission by setting a combination of two transmission gears with different numbers of teeth and the third transmission gear 410 provides more performance adjustment possibilities for the cleaning device lifting mechanism. In this embodiment, the number of gears of the third gear is less than the number of gears of the second gear.

[0045] In summary, by adjusting the number of teeth of the second transmission gear 400 and the third transmission gear 410, the lifting mechanism of the cleaning device can flexibly adjust the lifting speed and torque output according to different working requirements, thereby improving the adaptability and working efficiency of the equipment.

[0046] like Figure 2 As shown, the output shaft 700 is provided with a first slot body 710 , and the transmission shaft 200 passes through the first gear 100 and then extends into the first slot body 710 .

[0047] In a specific embodiment, a first groove body 710 is provided at the axial position of the output shaft 700. The first groove body 710 runs through the output shaft 700. The diameter of the first groove body 710 is larger than the diameter of the transmission shaft 200. The first groove body 710 mainly functions to make way for the transmission shaft 200, so that the output shaft 700 will not conflict with the transmission shaft 200 when the first gear 100 moves along the transmission shaft 200.

[0048] like Figure 2 As shown, a limiting portion 220 is provided at one end of the transmission shaft 200 away from the first transmission gear 210 . When the first gear 100 descends to the limit position along the transmission shaft 200 , the limiting portion 220 conflicts with the first gear 100 .

[0049] In a specific embodiment, a limiting portion 220 is provided at one end of the transmission shaft 200 away from the first transmission gear 210. The limiting portion 220 is an annular boss structure. The limiting portion 220 protrudes from the edge of the transmission shaft 200, and the diameter of the limiting portion 220 is greater than the diameter of the first through hole 110, so that when the first gear 100 descends to the extreme position along the transmission shaft 200, that is, the first gear 100 continues to slide down under the action of gravity and other factors until the first gear 100 contacts the limiting portion 220. At this time, the limiting portion 220 conflicts with the first gear 100, preventing the first gear 100 from continuing to slide down, thereby limiting the lowest position of the first gear 100 and avoiding the cleaning device from leaving the normal working range due to excessive descent.

[0050] In summary, the setting of the limit portion 220 defines the lowest position of the first gear 100, so that the cleaning device can stop within a controllable range each time it descends, ensuring that the cleaning device works within a suitable height range, which helps to improve the stability and repeatability of the cleaning work.

[0051] like Figure 3 As shown, the cleaning device lifting mechanism also includes a sensing switch 500 and a trigger rod 510. The trigger rod 510 is located above the first gear 100. When the first gear 100 rises to a preset position along the transmission shaft 200, the first gear 100 pushes the trigger rod 510 to move. After the sensing switch 500 detects the movement of the trigger rod 510, it controls the driving device 800 to stop working.

[0052] In a specific embodiment, the cleaning device lifting mechanism further includes a sensor switch 500 and a trigger rod 510. In this embodiment, the sensor switch 500 is a photoelectric sensor switch 500. In another specific embodiment, the sensor switch 500 may be other types of switches, such as a mechanical micro switch. The trigger rod 510 is generally L-shaped. The material and shape of the trigger rod 510 can be optimized and adjusted according to actual conditions. The trigger rod 510 is located above the first gear 100. When the first gear 100 rises to a preset position along the transmission shaft 200, the first gear 100 will push the trigger rod 510 to move during the upward movement. At this time, the sensor switch 500 can detect the movement change of the trigger rod 510, and then the sensor switch 500 transmits the detection signal to the driving device 800. After receiving the signal, the driving device 800 stops working, thereby stopping the first gear 100 from moving, and the cleaning device stops rising, and the highest position of the cleaning device rises is accurately controlled.

[0053] In summary, through the cooperation of the sensing switch 500 and the trigger rod 510, precise control of the rising position of the first gear 100 is achieved, ensuring that the cleaning device can accurately stop at a preset height each time it rises. This position detection and control mechanism helps to improve the intelligence level of the entire cleaning device lifting mechanism.

[0054] like Figure 4 As shown, the cleaning device lifting mechanism further includes a fixed bearing 600 , which is sleeved on the transmission shaft 200 , and is located between the first gear 100 and the first transmission gear 210 . The fixed bearing 600 is used to stabilize the position of the transmission shaft 200 .

[0055] In a specific embodiment, the cleaning device lifting mechanism further includes a fixed bearing 600, which can be selected according to actual load, rotation speed and other requirements. The fixed bearing 600 is sleeved on the transmission shaft 200, and the fixed bearing 600 is located between the first gear 100 and the first transmission gear 210. During the operation of the cleaning device lifting mechanism, the fixed bearing 600 plays a role in stabilizing the transmission shaft 200. When the first gear 100 rotates and slides along the transmission shaft 200, or the first transmission gear 210 rotates under power drive, the transmission shaft 200 will be subjected to forces in different directions, and the fixed bearing 600 sleeved on the transmission shaft 200 can effectively reduce the radial shaking of the transmission shaft 200, keep the transmission shaft 200 in a relatively stable position, and ensure that the power transmission and motion conversion of the entire mechanism are more stable and smooth.

[0056] In a specific embodiment, the cleaning device lifting mechanism further includes a box body 900 , and various components in the cleaning device lifting mechanism are installed based on the box body 900 .

[0057] The above are only preferred embodiments of the present application, and are not intended to limit the patent scope of the present application. Any equivalent structure or equivalent process transformation made using the contents of the present application specification and drawings, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present application.

Claims

1. A cleaning device lifting mechanism, characterized in that: include: A first gear, a second gear, and an output shaft; The first gear is meshed with the second gear, one end of the output shaft is connected to the first gear, and the other end of the output shaft is externally connected to a cleaning device, and when the first gear rotates in a first direction, the first gear drives the cleaning device to descend relative to the second gear through gear meshing; When the first gear rotates in a second direction opposite to the first direction, the first gear drives the cleaning device to rise relative to the second gear through gear meshing.

2. The cleaning device lifting mechanism according to claim 1, characterized in that: The cleaning device lifting mechanism also includes a transmission shaft. A first through hole matching the shape of the transmission shaft is provided at the center of the first gear. The transmission shaft passes through the first through hole, so that the first gear cannot generate relative rotation with the transmission shaft, but the first gear can slide along the transmission shaft.

3. The cleaning device lifting mechanism according to claim 1, characterized in that: The cleaning device lifting mechanism further includes a first transmission gear, which is fixedly mounted on the transmission shaft and is concentrically arranged with the first gear.

4. The cleaning device lifting mechanism according to claim 3, characterized in that: The cleaning device lifting mechanism further includes a driving device, and the driving device is used to drive the first transmission gear to rotate along the first direction and the second direction.

5. The cleaning device lifting mechanism according to claim 4, characterized in that: The cleaning device lifting mechanism also includes a second transmission gear and a third transmission gear, the second transmission gear and the third transmission gear are concentrically arranged and fixedly connected, the second transmission gear is meshed with the output end of the driving device, and the third transmission gear is meshed with the first transmission gear, and the power of the driving device is transmitted to the first transmission gear through the second transmission gear and the third transmission gear.

6. The cleaning device lifting mechanism according to claim 5, characterized in that: The second transmission gear and the third transmission gear have different numbers of teeth.

7. The cleaning device lifting mechanism according to claim 2, characterized in that: The output shaft is provided with a first slot body, and the transmission shaft extends into the first slot body after passing through the first gear.

8. The cleaning device lifting mechanism according to claim 3, characterized in that: A limiting portion is provided at one end of the transmission shaft away from the first transmission gear. When the first gear descends to a limit position along the transmission shaft, the limiting portion conflicts with the first gear.

9. The cleaning device lifting mechanism according to claim 4, characterized in that: The cleaning device lifting mechanism also includes an induction switch and a trigger rod. The trigger rod is located above the first gear. When the first gear rises to a preset position along the transmission shaft, the first gear pushes the trigger rod to move. After the induction switch detects the movement of the trigger rod, it controls the driving device to stop working.

10. The cleaning device lifting mechanism according to claim 1, characterized in that: The cleaning device lifting mechanism further includes a resistance component, and the resistance component is used to limit the second gear from rotating in one direction.

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