Lifting mechanism of cleaning device

Abstract

The utility model 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, in particular to a cleaning device lifting mechanism. BACKGROUND

[0002] The sweeping robot can replace human labor to clean the ground, liberate labor, and reduce the burden of cleaning personnel, and can be widely applied to rooms, shopping malls, factories, stations, airports and other use scenarios.

[0003] Generally, the sweeping robot is provided with a cleaning device to clean the ground. The traditional sweeping robot generally drives the cleaning device to lift through a telescopic mechanism. However, the telescopic mechanism is difficult to meet the requirements of the sweeping robot that the cleaning device needs to have different lifting speeds in different situations. For example, when the sweeping robot needs to cross an obstacle, the cleaning device needs to be quickly lifted up, and when the sweeping robot needs to be finely cleaned, the cleaning device needs to be slowly lowered. CONTENT OF THE UTILITY MODEL

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

[0005] In order to solve the above technical problems, the present application provides a cleaning device lifting mechanism, which comprises: a first gear, a second gear, and an output shaft.

[0006] The first gear and the second gear are engaged, 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 a first direction, the first gear drives the cleaning device to descend relative to the second gear through gear engagement.

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

[0008] Further, the cleaning device lifting mechanism further comprises a transmission shaft, a first through hole matched with the shape of the transmission shaft is arranged at the center position of the first gear, and the transmission shaft penetrates through the first through hole, so that the first gear cannot rotate relative to the transmission shaft, but the first gear can slide along the transmission shaft.

[0009] Further, the cleaning device lifting mechanism further comprises a first transmission gear, the first transmission gear is fixedly assembled on the transmission shaft, and the first transmission gear is arranged concentrically with the first gear.

[0010] Further, the cleaning device lifting mechanism further comprises a driving device, the driving device being configured to drive the first transmission gear to rotate in the first direction and the second direction.

[0011] Further, the cleaning device lifting mechanism further comprises a second transmission gear and a third transmission gear, the second transmission gear and the third transmission gear being concentrically arranged and fixedly connected, the second transmission gear being engaged with the output end of the driving device, the third transmission gear being engaged with the first transmission gear, the power of the driving device being 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] Further, the output shaft is provided with a first slot, the transmission shaft extending into the first slot after passing through the first gear.

[0014] Further, an end of the transmission shaft away from the first transmission gear is provided with a limiting part, when the first gear is lowered to a limit position along the transmission shaft, the limiting part abuts against the first gear.

[0015] Further, the cleaning device lifting mechanism further comprises an inductive switch and a trigger lever, the trigger lever being located above the first gear, when the first gear is raised to a preset position along the transmission shaft, the first gear pushes the trigger lever to move, the inductive switch detects the movement of the trigger lever and controls the driving device to stop working.

[0016] Further, the cleaning device lifting mechanism further comprises a resistance component, the resistance component being configured to limit the one-way rotation of the second gear.

[0017] The cleaning device lifting mechanism provided in the present application has the following advantages: in the cleaning device lifting mechanism provided in the present application, the cleaning device lifting mechanism comprises a first gear, a second gear and an output shaft, the first gear and the second gear are engaged, 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 a first direction, the first gear drives the cleaning device to lower 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 with the first gear and controlling the rotating speed of the first gear, the rising and lowering speed of the cleaning device driven by the first gear can be adjusted to meet the requirement of the cleaning device of the sweeping robot to have different rising and lowering speeds in different situations. BRIEF DESCRIPTION OF DRAWINGS

[0018] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the embodiments description will be briefly introduced. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without any creative effort based on these drawings. Among them:

[0019] Figure 1 is a perspective view of the cleaning device lifting mechanism of an embodiment of the present application;

[0020] Figure 2 is a sectional view of the cleaning device lifting mechanism of an embodiment of the present application;

[0021] Figure 3 is a perspective view of the cleaning device lifting mechanism of an embodiment of the present application after removing the box;

[0022] Figure 4 is an exploded view of the first gear part and the second gear part of an embodiment of the present application.

[0023] Legend: 100, first gear; 110, first through hole; 200, transmission shaft; 210, first transmission gear; 220, limiting part; 300, second gear; 310, first fixed shaft; 320, resistance component; 400, second transmission gear; 410, third transmission gear; 500, induction switch; 510, trigger lever; 600, fixed bearing; 700, output shaft; 710, first groove; 800, driving device; 900, box. DETAILED DESCRIPTION

[0024] In order to make the purpose, technical solutions and advantages of the present application more clear, the present application will be further described in detail below with reference to the 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 is to be understood that the singular forms "a," "an," and "the" include plural referents unless the context clearly dictates otherwise. It is further understood that the terms "comprise" and "comprising" and the like, when used in this specification, specify the presence of stated features, integers, steps, operations, elements, modules, modules, and / or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, modules, modules, components, and / or groups thereof. It is further understood that when we refer to an element being "connected" or "coupled" to another element, it can be directly connected or coupled to the other element, or intervening elements can be present. In addition, the use of "connection" or "coupling" herein includes wireless connection or wireless coupling. The term "and / or" as used herein includes all or any of the associated listed items and all combinations thereof.

[0026] It is to be understood that the terms used herein, including technical and scientific terms, have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs unless otherwise defined. It is further to be understood that terms, such as those defined in commonly used dictionaries, should be interpreted as having a meaning that is consistent with their meaning in the context of the relevant art and will not be interpreted in an idealized or overly formal sense unless expressly so defined herein.

[0027] As shown in Figure 3 and Figure 4 The present application provides a cleaning device lifting mechanism, the cleaning device lifting mechanism comprising a first gear 100, a second gear 300, an output shaft 700, the first gear 100 and the second gear 300 are engaged, one end of the output shaft 700 is connected with the first gear 100, the other end of the output shaft 700 circumscribes the 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 engagement, when the first gear 100 rotates in a second direction opposite to the first direction, the first gear 100 drives the cleaning device to ascend relative to the second gear 300 through gear engagement.

[0028] In a specific embodiment, the first gear 100 is disc-shaped, and the first gear 100 is horizontally arranged. The external cleaning device is connected to the first gear 100. The cleaning device lifting mechanism further comprises a transmission shaft 200, which is vertically arranged and penetrates the first gear 100 at the central position of the first gear 100. The transmission shaft 200 serves as a support and guide component of the first gear 100, and the position of the transmission shaft 200 is fixed to ensure that the first gear 100 can stably slide up and down along the axial direction. On the other hand, the transmission shaft 200 is also a component for driving the first gear 100 to rotate. The second gear 300 is substantially cylindrical, and the second gear 300 is vertically arranged at the side of the first gear 100. The position of the second gear 300 in the vertical direction is fixed. The second gear 300 is engaged with the first gear 100, and the number of teeth engaged between the first gear 100 and the second gear 300 can be one or more. The first direction and the second direction are two opposite rotation directions, which correspond to the descending and ascending actions of the cleaning device, respectively. In this embodiment, the first direction is the clockwise rotation direction of the first gear 100 in the horizontal plane. When the first gear 100 rotates in the first direction, the second gear 300 can be driven to rotate, so that the first gear 100 is driven to descend in the vertical direction under the action of gravity and the force of the second gear 300. The second direction is the counterclockwise rotation direction of the first gear 100 in the horizontal plane. When the first gear 100 rotates in the second direction, the second gear 300 can be forced to ascend in the vertical direction by being restricted from rotating. The way of restricting the rotation of the second gear 300 can be to increase the moment of inertia of the second gear 300 or to set a specific component to restrict the rotation of the second gear 300.

[0029] The output shaft 700 is cylindrical, and the output shaft 700 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 integrally formed. The output shaft 700 is used to connect the first gear 100 and the cleaning device, and to transmit the linear motion of the first gear 100 to the cleaning device, so that the cleaning device can move in the vertical direction along with the lifting of the first gear 100.

[0030] In summary, the cleaning device lifting mechanism in the present application realizes the function of lifting the external cleaning device by the cooperation of the first gear 100 and the second gear 300. By controlling the rotation speed of the first gear 100, the speed of lifting and descending the cleaning device in the vertical direction by the first gear 100 can be controlled, so as to meet the requirement of the cleaning device having different lifting speeds in different situations.

[0031] As shown in Figure 4 The cleaning device lifting mechanism further comprises a resistance component 320 for restricting the one-way rotation of the second gear 300.

[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 is arranged concentrically with the second gear 300. Through the one-way bearing, the rotation of the second gear 300 in one direction can be limited. The cleaning device lifting mechanism further comprises a first fixed shaft 310, which is vertically arranged and fixed in position. 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 does not limit the rotation of the driven gear 300, and the driving gear 100 is forced to drive the cleaning device to descend along the transmission shaft 200. When the driving gear 100 rotates in the second direction opposite to the first direction, the resistance component limits the rotation of the driven gear 300 to force the driving gear 100 to drive the cleaning device to ascend along the transmission shaft 200.

[0033] As shown in Figure 2 The center of the first gear 100 is provided with a first through hole 110 matched with the shape of the transmission shaft 200. The transmission shaft 200 penetrates the first through hole 110, so that the first gear 100 cannot rotate relative to 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, and the transmission shaft 200 is irregular in shape. The shape of the first through hole 110 is accurately 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 mode of the transmission shaft 200 and the first gear 100 allows the first gear 100 to freely slide along the axis direction of the transmission shaft 200, which is an important condition to realize the lifting function of the first gear 100.

[0035] In summary, the accurate matching design of 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, avoiding energy loss due to 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 movement of the first gear 100, so that the first gear 100 can move flexibly along the direction of the transmission shaft 200.

[0036] As shown in Figure 3As shown, the cleaning device lifting mechanism further comprises a first transmission gear 210 fixedly assembled on the transmission shaft 200, and 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 in the form of a disc, and is arranged in parallel with the first gear 100 and concentrically with the first gear 100. The first transmission gear 210 functions to transmit 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 power transmission 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, the energy loss during power transmission is reduced and the probability of mechanical failure is also reduced, so that the cleaning device lifting mechanism can operate more stably and reliably.

[0039] As shown in the figure, Figure 1 The cleaning device lifting mechanism further comprises a driving device 800 for driving the first transmission gear 210 to rotate in a first direction and a 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 functions to provide rotational power to 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 take various forms, such as a motor, a 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, and high automation in the working process can be achieved.

[0042] As shown in the figure, Figure 3As shown, the cleaning device lifting mechanism further comprises a second transmission gear 400 and a third transmission gear 410, which are concentrically arranged and fixedly connected, the second transmission gear 400 is engaged with the output end of the driving device 800, and the third transmission gear 410 is engaged 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 tooth numbers.

[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 engaged with the output end of the driving device 800 to receive the power output by the driving device 800, and then transmits the power to the third transmission gear 410 through fixed connection, and the third transmission gear 410 is engaged with the first transmission gear 210 to transmit 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 tooth numbers 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 tooth number of the second transmission gear 400 can be selected to be greater than that of the third transmission gear 410. In this way, during the power transmission process of the driving device 800, the effect of speed reduction and torque increase can be achieved, so that the first transmission gear 210 can obtain greater torque to drive the first gear 100, thereby meeting the power requirement of the cleaning device lifting mechanism when lifting heavy load. On the contrary, if it is necessary to increase the lifting speed of the first gear 100, the tooth number of the second transmission gear 400 can be selected to be less than that of the third transmission gear 410 to achieve the purpose of speed increase. This combination of second transmission gear and third transmission gear 410 with different tooth numbers for speed change transmission provides more possibilities for performance adjustment of the cleaning device lifting mechanism. In this embodiment, the gear number of the third gear is less than that of the second gear.

[0045] In summary, by adjusting the tooth numbers of the second transmission gear 400 and the third transmission gear 410, the cleaning device lifting mechanism 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] As shown in Figure 2 The output shaft 700 is provided with a first groove body 710, and the transmission shaft 200 extends into the first groove body 710 after passing through the first gear 100.

[0047] In a specific embodiment, a first groove 710 is provided at the axial position of the output shaft 700, the first groove 710 penetrates the output shaft 700, and the diameter of the first groove 710 is greater than the diameter of the transmission shaft 200. The main function of the first groove 710 is to provide space for the transmission shaft 200, so that the output shaft 700 does not interfere with the transmission shaft 200 during the movement of the first gear 100 along the transmission shaft 200.

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

[0049] In a specific embodiment, the end of the transmission shaft 200 away from the first transmission gear 210 is provided with a limiting portion 220. The limiting portion 220 is an annular boss structure, which 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. When the first gear 100 descends to the limit position along the transmission shaft 200, that is, the first gear 100 continues to slide downward under the action of gravity and other factors until the first gear 100 contacts the limiting portion 220, the limiting portion 220 interferes with the first gear 100, preventing the first gear 100 from continuing to slide downward, thereby limiting the lowest position of the first gear 100, avoiding the situation that the cleaning device deviates from the normal working range due to excessive descent, and the like.

[0050] In summary, the limiting portion 220 limits 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 the appropriate height range, which helps to improve the stability and repeatability of the cleaning work.

[0051] As shown in Figure 3 , the cleaning device lifting mechanism further includes an inductive switch 500 and a trigger lever 510. The trigger lever 510 is located above the first gear 100. When the first gear 100 rises to the preset position along the transmission shaft 200, the first gear 100 pushes the trigger lever 510 to move. After the inductive switch 500 detects the movement of the trigger lever 510, the control driving device 800 stops working.

[0052] In one specific embodiment, the lifting mechanism of the cleaning device 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 can be other types of switches, such as mechanical micro switches. The trigger rod 510 is approximately 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 along the transmission shaft 200 to a preset position, the first gear 100 will push the trigger rod 510 to move during its upward movement. At this time, the sensor switch 500 can detect this movement change of the trigger rod 510. Then, the sensor switch 500 transmits the detection signal to the drive device 800. After receiving the signal, the drive device 800 stops working, thereby stopping the first gear 100 from moving and the cleaning device from rising, thus precisely controlling the highest position of the cleaning device.

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

[0054] like Figure 4 As shown, the lifting mechanism of the cleaning device also includes a fixed bearing 600, which is sleeved on the transmission shaft 200 and 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 one specific embodiment, the lifting mechanism of the cleaning device further includes a fixed bearing 600. The fixed bearing 600 can be selected according to actual load, speed, and other requirements. The fixed bearing 600 is sleeved on the transmission shaft 200 and is located between the first gear 100 and the first transmission gear 210. During the operation of the lifting mechanism of the cleaning device, 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 when the first transmission gear 210 rotates under power drive, the transmission shaft 200 will be subjected to forces in different directions. The fixed bearing 600 sleeved on the transmission shaft 200 can effectively reduce the radial wobble 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 one specific embodiment, the cleaning device lifting mechanism further includes a housing 900 portion, and the components in the cleaning device lifting mechanism are mounted based on the housing 900.

[0057] The above merely 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 using the content 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 by, The cleaning device lifting mechanism comprises: a first gear, a second gear, and an output shaft; the first gear and the second gear are engaged, 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 a first direction, the first gear drives the cleaning device to descend relative to the second gear through gear engagement; 2. The cleaning device lift mechanism of claim 1, wherein, when the first gear rotates in a second direction opposite to the first direction, the first gear drives the cleaning device to ascend relative to the second gear through gear engagement.

3. The cleaning device lifting mechanism of claim 2, wherein, The cleaning device lifting mechanism further comprises a transmission shaft, a first through hole is arranged at the center of the first gear and matches the shape of the transmission shaft, and the transmission shaft penetrates through the first through hole, so that the first gear cannot rotate relative to the transmission shaft, but the first gear can slide along the transmission shaft.

4. The cleaning device lift mechanism of claim 3, wherein, The cleaning device lifting mechanism further comprises a first transmission gear, which is fixedly arranged on the transmission shaft and concentrically arranged with the first gear.

5. The cleaning device lifting mechanism of claim 4, wherein, The cleaning device lifting mechanism further comprises a driving device, which is used to drive the first transmission gear to rotate in the first direction and the second direction.

6. The cleaning device lift mechanism of claim 5, wherein, The cleaning device lifting mechanism further comprises a second transmission gear and a third transmission gear, which are concentrically arranged and fixedly connected, the second transmission gear is engaged with the output end of the driving device, and the third transmission gear is engaged with the first transmission gear, so that the power of the driving device is transmitted to the first transmission gear through the second transmission gear and the third transmission gear.

7. The cleaning device lift mechanism of claim 2, wherein, The second transmission gear and the third transmission gear have different numbers of teeth.

8. The cleaning device lift mechanism of claim 3, wherein, The output shaft is provided with a first groove, and the transmission shaft extends into the first groove after penetrating through the first gear.

9. The cleaning device lift mechanism of claim 4, wherein, An end of the transmission shaft away from the first transmission gear is provided with a limiting portion, and when the first gear descends to a limit position along the transmission shaft, the limiting portion abuts against the first gear.

10. The cleaning device lift mechanism of claim 1, wherein, The cleaning device lifting mechanism further comprises an inductive switch and a trigger lever, the trigger lever is located above the first gear, when the first gear ascends to a preset position along the transmission shaft, the first gear drives the trigger lever to move, and after the inductive switch detects the movement of the trigger lever, the driving device stops working. The cleaning device lifting mechanism further comprises a resistance component, which is used to limit the one-way rotation of the second gear.

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