Propelling device and cleaning robot

Abstract

The embodiment of the utility model relates to the technical field of cleaning equipment, in particular to a propelling device and a cleaning robot, the propelling device comprises a shell assembly and a driving assembly, the shell assembly is provided with a containing cavity and two communicating ports, the two communicating ports are respectively arranged on two sides of the shell assembly, and the two communicating ports are respectively communicated with the containing cavity; the driving assembly comprises a motor, two ratchet wheels and two turbines, the motor is contained in the containing cavity, the motor is provided with two output shafts, the two output shafts are arranged on the two sides of the motor respectively, one output shaft extends out of one communication opening, one ratchet wheel is fixed to one output shaft, one ratchet wheel is provided with first slipping teeth, one turbine penetrates through one output shaft, and the other output shaft is provided with second slipping teeth. A turbine is provided with second slipping teeth, and the first slipping teeth abut against the second slipping teeth. By means of the mode, the turbines on the two sides can be independently driven to rotate only through one motor, the containing space needed by the propelling device can be reduced, and therefore the size of the propelling device is reduced.

Description

Technical Field

[0001] The embodiments of the utility model relate to the technical field of cleaning equipment, and in particular to a propulsion device and a cleaning robot. Background Art

[0002] A water surface cleaning robot is a cleaning device that can automatically clean garbage and floating objects on the water surface. It generally includes a propulsion device and a cleaning device arranged on the propulsion device. The cleaning device is used to clean the water surface, and the propulsion device is used to drive the water surface cleaning robot forward or backward.

[0003] However, in the process of realizing the utility model, the inventor discovered that the propulsion device of the water surface cleaning robot currently on the market mainly has turbines arranged at the front and rear ends to drive the water surface cleaning robot forward or backward. When moving forward, only one motor is started to drive the turbine at the rear end to rotate to generate forward thrust. When moving backward, only the other motor is started to drive the turbine at the front end to rotate to generate backward thrust. However, the two motors occupy a large space, so that the propulsion device needs to be designed to be larger in size. Utility Model Content

[0004] In view of the above problems, the embodiments of the present utility model provide a propulsion device and a cleaning robot, which overcome the above problems or at least partially solve the above problems.

[0005] According to one aspect of an embodiment of the utility model, a propulsion device is provided, including a shell component and a drive component, the shell component is provided with a accommodating chamber and two communicating ports, the two communicating ports are respectively arranged on both sides of the shell component, and the two communicating ports are respectively connected to the accommodating chamber; the drive component includes a motor, two ratchets and two turbines, the motor is accommodated in the accommodating chamber, the motor is provided with two output shafts, the two output shafts are respectively arranged on both sides of the motor, one of the output shafts extends out of the communicating port, one of the ratchets is fixed to one of the output shafts, one of the ratchets is provided with a first slipping tooth, one of the turbines passes through one of the output shafts, and one of the turbines is provided with a second slipping tooth, and the first slipping tooth abuts against the second slipping tooth; wherein, when the ratchet rotates in a first direction, the first slipping tooth engages with the second slipping tooth, and the ratchet drives the turbine to rotate, and when the ratchet rotates in a second direction, the first slipping tooth cannot engage with the second slipping tooth, and the ratchet will slip relative to the turbine.

[0006] In some embodiments, the turbine is arranged on a side of the ratchet away from the motor, the first slipping tooth is arranged on a side of the ratchet away from the motor, and the second slipping tooth is arranged on a side of the turbine close to the motor.

[0007] In some embodiments, a first thread is provided at the end of the output shaft, and the drive assembly further includes a nut, a gasket and an elastic member, the nut is threadedly connected to the first thread, the elastic member and the gasket both pass through the output shaft, one side of the elastic member abuts against a side of the turbine away from the motor, one side of the gasket abuts against the other side of the elastic member, and the nut abuts against the other side of the gasket.

[0008] In some embodiments, the output shaft is provided with a first flattened portion near the first thread, the axial hole of the ratchet is provided with a second flattened portion, and the first flattened portion abuts against the second flattened portion.

[0009] In some embodiments, the ratchet has a tubular portion extending around the axial hole on a side away from the motor, the turbine at least partially passes through the tubular portion, the inner wall of the tubular portion is provided with a second thread, the second thread is located at an end of the inner wall of the tubular portion away from the motor, the second thread is at least partially threaded to the first thread; the second flat portion extends to the inner wall of the tubular portion.

[0010] In some embodiments, a receiving groove is provided on a side of the turbine away from the motor, and the elastic member is at least partially received in the receiving groove.

[0011] In some embodiments, the propulsion device also includes an acceleration assembly, which includes a spoiler, which is fixed to the shell assembly through the output shaft, and a water inlet is provided at one end of the spoiler close to the motor, and a water outlet spoiler is provided at one end of the spoiler away from the motor.

[0012] In some embodiments, the acceleration assembly also includes a nozzle cover, one end of the nozzle cover is connected to the end of the spoiler cover away from the motor, and the other end of the nozzle cover is provided with a nozzle, and the nozzle is connected to the water outlet spoiler port, and the area of ​​the nozzle is smaller than the area of ​​the water outlet spoiler port. Along the direction from the spoiler cover to the nozzle cover, the cross-sectional area of ​​the nozzle cover gradually decreases, and the cross-section is the cross-section of the nozzle cover perpendicular to the direction from the spoiler cover to the nozzle cover.

[0013] In some embodiments, the housing assembly includes a housing, a seal and a metal sleeve, the metal sleeve is arranged on the output shaft, the seal is arranged between the metal sleeve and the inner wall of the connecting port, and the output shaft, the metal sleeve and the seal jointly seal the connecting port.

[0014] According to one aspect of the embodiments of the utility model, a cleaning robot is provided, comprising the above-mentioned propulsion device.

[0015] The beneficial effects of the embodiments of the utility model are as follows: Different from the prior art, the propulsion device provided by the embodiments of the utility model comprises a shell assembly and a driving assembly, the shell assembly is provided with a accommodating chamber and two communicating ports, the two communicating ports are respectively arranged on both sides of the shell assembly, and the two communicating ports are respectively communicated with the accommodating chamber; the driving assembly comprises a motor, two ratchets and two turbines, the motor is accommodated in the accommodating chamber, the motor is provided with two output shafts, the two output shafts are respectively arranged on both sides of the motor, one of the output shafts extends out of the communicating port, one of the ratchets is fixed to one of the output shafts, one of the ratchets is provided with a first slipping tooth, one of the turbines passes through one of the output shafts, and one of the turbines is provided with a second slipping tooth, the first slipping tooth abuts against the second slipping tooth, when the ratchet rotates in a first direction, the first slipping tooth engages with the second slipping tooth, the ratchet drives the turbine to rotate, when the ratchet rotates in a second direction, the first slipping tooth cannot engage with the second slipping tooth, and the ratchet will slip relative to the turbine. Through the above method, when the motor is driven in the forward direction, the ratchet on one side drives the turbine to rotate, and the ratchet on the other side will slip relative to the turbine. When the motor is driven in the reverse direction, the ratchet on one side will slip relative to the turbine, and the ratchet on the other side drives the turbine to rotate. In this way, the propulsion device only needs one motor to drive the turbines on both sides to rotate separately, reducing the accommodation space required for the propulsion device, thereby reducing the volume of the propulsion device. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for use in the embodiments of the present application will be briefly introduced below. 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 the drawings without paying creative work.

[0017] Figure 1 is a three-dimensional diagram of a propulsion device provided by an embodiment of the utility model;

[0018] Figure 2 It is a partial exploded view of the propulsion device provided by the embodiment of the utility model;

[0019] Figure 3 It is an exploded view of the housing assembly and the motor provided in the embodiment of the utility model;

[0020] Figure 4 is a stereogram of a drive assembly provided by an embodiment of the utility model;

[0021] Figure 5 is a partial exploded view of a drive assembly provided by an embodiment of the utility model;

[0022] Figure 6It is a schematic diagram of the structure of the turbine provided by an embodiment of the utility model;

[0023] Figure 7 It is a schematic diagram of the structure of the ratchet provided by the embodiment of the utility model.

[0024] The reference numerals in the specific implementation manner are as follows:

[0025] 1000. Propulsion device;

[0026] 100, housing assembly; 11, housing; 11a, accommodating chamber; 11b, communicating port; 111, top cover; 112, bottom shell; 113, sealing ring; 12, sealing member; 13, metal sleeve;

[0027] 200, driving assembly; 21, motor; 211, output shaft; 211a, first thread; 211b, first flat portion; 22, ratchet; 221, first slipping tooth; 222, second flat portion; 223, tubular portion; 23, turbine; 231, second slipping tooth; 232, receiving groove; 2321, protrusion; 24, nut; 25, gasket; 26, elastic member; 27, bearing;

[0028] 300, acceleration component; 31, spoiler cover; 31a, water inlet; 31b, water outlet spoiler; 32, nozzle cover; 321, nozzle. DETAILED DESCRIPTION

[0029] In order to facilitate the understanding of the utility model, the utility model is described in more detail below in conjunction with the accompanying drawings and specific embodiments. It should be noted that when an element is described as "fixed to" another element, it can be directly on the other element, or there can be one or more centered elements therebetween. When an element is described as "connected to" another element, it can be directly connected to the other element, or there can be one or more centered elements therebetween. The terms "vertical", "horizontal", "left", "right" and similar expressions used in this specification are for illustrative purposes only.

[0030] Unless otherwise defined, all technical and scientific terms used in this specification have the same meaning as those commonly understood by technicians in the technical field of the present invention. The terms used in this specification are only for the purpose of describing specific embodiments and are not used to limit the present invention. The term "and / or" used in this specification includes any and all combinations of one or more related listed items.

[0031] A water surface cleaning robot is a cleaning device that can automatically clean garbage and floating objects on the water surface. It generally includes a propulsion device and a cleaning device arranged on the propulsion device. The cleaning device is used to clean the water surface, and the propulsion device is used to drive the water surface cleaning robot forward or backward.

[0032] The propulsion device of the existing water surface cleaning robot mainly sets turbines at the front and rear ends to drive the water surface cleaning robot forward or backward. When moving forward, only one motor is started to drive the turbine at the rear end to rotate to generate forward thrust. When moving backward, only the other motor is started to drive the turbine at the front end to rotate to generate backward thrust. However, the two motors take up a large space, so that the propulsion device needs to be designed to be larger.

[0033] The embodiment of the present application designs a one-way drive structure of the ratchet and the turbine, so that only one motor is needed to independently drive the turbines on both sides to rotate, thereby reducing the accommodation space required for the propulsion device and thus reducing the volume of the propulsion device.

[0034] In order to facilitate readers to understand the inventive concept of this application, the specific structure of the propulsion device is described below:

[0035] See also Figure 1-5 The propulsion device 1000 includes a housing assembly 100 and a driving assembly 200. The housing assembly 100 is provided with a housing chamber 11a and two communication ports 11b. The two communication ports 11b are respectively provided on both sides of the housing assembly 100, and the two communication ports 11b are respectively communicated with the housing chamber 11a; the driving assembly 200 includes a motor 21, two ratchets 22 and two turbines 23. The motor 21 is accommodated in the housing chamber 11a. The motor 21 is provided with two output shafts 211. The two output shafts 211 are respectively provided on both sides of the motor 21, and one of the output shafts 211 extends out of the communication port 11b. One of the ratchet wheels 22 is fixed to one of the output shafts 211, one of the ratchet wheels 22 is provided with a first slipping tooth 221, one of the turbine wheels 23 passes through one of the output shafts 211, one of the turbine wheels 23 is provided with a second slipping tooth 231, and the first slipping tooth 221 abuts against the second slipping tooth 231; wherein, when the ratchet wheel 22 rotates in a first direction, the first slipping tooth 221 engages with the second slipping tooth 231, and the ratchet wheel 22 drives the turbine wheel 23 to rotate; when the ratchet wheel 22 rotates in a second direction, the first slipping tooth 221 cannot engage with the second slipping tooth 231, and the ratchet wheel 22 will slip relative to the turbine wheel 23. In this way, when the motor 21 is driven in the forward direction, the ratchet wheel 22 on one side drives the turbine wheel 23 to rotate, and the ratchet wheel 22 on the other side will slip relative to the turbine wheel 23; when the motor 21 is driven in the reverse direction, the ratchet wheel 22 on one side will slip relative to the turbine wheel 23, and the ratchet wheel 22 on the other side drives the turbine wheel 23 to rotate.

[0036] Specifically, in the implementation of the present application, the motor 21 is a double-output shaft motor 21, that is, the motor 21 has two output shafts 211 arranged opposite to each other. When the motor 21 is running, the two output shafts 211 rotate in the same direction. When the motor 21 is driven in the forward direction, the output shaft 211 rotates in the forward direction and drives the ratchet 22 to rotate in the forward direction. The ratchet 22 on one side drives the turbine 23 to rotate, thereby generating an adsorption force and a thrust. The ratchet 22 on the other side will slip relative to the turbine 23 and thus will not have any effect. When the motor 21 is driven in the reverse direction, the output shaft 211 rotates in the reverse direction and drives the ratchet 22 to rotate in the reverse direction. The ratchet 22 on one side will slip relative to the turbine 23 and thus will not have any effect. The ratchet 22 on the other side drives the turbine 23 to rotate, thereby generating an adsorption force and a thrust.

[0037] Further, the turbine 23 is arranged on the side of the ratchet 22 away from the motor 21, so that there is no part blocking the side of the turbine 23 away from the motor 21. When the turbine 23 rotates, water can be sucked in from the side of the turbine 23 close to the motor 21 to generate adsorption force, and water can flow out from the side of the turbine 23 away from the motor 21, thereby generating better thrust, and the ratchet 22 close to the motor 21 can improve the transmission efficiency of the motor 21 to the ratchet 22. The first slipping tooth 221 is arranged on the side of the ratchet 22 away from the motor 21, and the second slipping tooth 231 is arranged on the side of the turbine 23 close to the motor 21. In this way, when the turbine 23 approaches and abuts against the ratchet 22, the first slipping tooth 221 can be engaged with the second slipping tooth 231, and when the turbine 23 is away from the ratchet 22, the first slipping tooth 221 cannot be engaged with the second slipping tooth 231. Specifically, the first sliding tooth 221 and the second sliding tooth 231 may be a helical tooth structure, which includes an inclined surface and a right-angled surface, one end of the inclined surface is connected to the right-angled surface, and when the ratchet 22 rotates in the first direction, the right-angled surface of the first sliding tooth 221 abuts against the right-angled surface of the second sliding tooth 231, so that the first sliding tooth 221 engages with the second sliding tooth 231, and the ratchet 22 can drive the turbine 23 to rotate; when the ratchet 22 rotates in the second direction, the inclined surface of the first sliding tooth 221 slides along the inclined surface of the second sliding tooth 231, so that the first sliding tooth 221 cannot engage with the second sliding tooth 231, that is, the ratchet 22 will slip relative to the turbine 23. It can be understood that the structures of the first sliding tooth 221 and the second sliding tooth 231 are not limited and can be adjusted according to needs.

[0038] In a preferred embodiment, a first thread 211a is provided at the end of the output shaft 211, and the drive assembly 200 also includes a nut 24, a gasket 25 and an elastic member 26. The nut 24 is threadedly connected to the first thread 211a, and the elastic member 26 and the gasket 25 both pass through the output shaft 211. One side of the elastic member 26 abuts against the side of the turbine 23 away from the motor 21, one side of the gasket 25 abuts against the other side of the elastic member 26, and the nut 24 abuts against the other side of the gasket 25. In this way, under the elastic force of the elastic member 26, the turbine 23 can closely abut the ratchet 22, so that the second slipping tooth 231 of the turbine 23 can closely abut the first slipping tooth 221 of the ratchet 22, which is conducive to the ratchet 22 to better drive the turbine 23 to rotate; in addition, after the ratchet 22 slips relative to the turbine 23, the turbine 23 can quickly return to its original position and abut against the ratchet 22, so that when the motor 21 quickly changes the driving direction, the ratchet 22 and the turbine 23 can also quickly switch between the two matching modes of abutment and slippage, which is conducive to improving the starting speed of the propulsion device 1000. It can be understood that the material of the gasket 25 is not limited, and the type of the elastic member 26 is not limited. For example, the gasket 25 can be a metal gasket 25, and the elastic member 26 can be a spring.

[0039] Furthermore, the driving assembly 200 further includes a bearing 27, the outer wall of the bearing 27 is fixed to the shaft hole of the turbine 23, and the inner wall of the bearing 27 is fixed to the output shaft 211, so that the turbine 23 can stably rotate relative to the output shaft 211. The elastic member 26 can also abut against the turbine 23 by abutting against the bearing 27, so that the elastic member 26 of a small size can also abut against the turbine 23. The outer wall of the bearing 27 can be fixed to the shaft hole of the turbine 23 by means of interference fit or adhesive, and similarly, the inner wall of the bearing 27 can also be fixed to the output shaft 211 by means of interference fit or adhesive.

[0040] In some embodiments, please refer to Figure 6The turbine 23 is provided with a receiving groove 232 on a side away from the motor 21 , and the elastic member 26 can be received in the receiving groove 232 , thereby reducing the axial dimension of the driving assembly 200 . Furthermore, considering that the turbine 23 needs to have a large-sized shaft hole to fix the bearing 27, and the large-sized shaft hole will affect the arrangement of the second slipping tooth 231, then the size of the receiving groove 232 can be larger so that the above-mentioned bearing 27 can also be accommodated and fixed in the receiving groove 232. In this way, the turbine 23 does not need to have a large-sized shaft hole to fix the bearing 27, and will not affect the arrangement of the second slipping tooth 231; specifically, a plurality of protrusions 2321 can be provided on the inner wall of the receiving groove 232, and the plurality of protrusions 2321 are interference fit with the bearing 27, so that the bearing 27 is fixed to the receiving groove 232; during assembly, the bearing 27 is first fixed to the receiving groove 232, and then the turbine 23 is passed through the output shaft 211 to abut against the ratchet 22, and then the elastic member 26 is passed through the output shaft 211 to abut against the bearing 27, and then the gasket 25 and the nut 24 are installed in sequence.

[0041] For further information, please also refer to Figure 7 , the output shaft 211 is provided with a first flattened portion 211b near the first thread 211a, and the shaft hole of the ratchet 22 is provided with a second flattened portion 222. When the shaft hole of the ratchet 22 passes through the output shaft 211, the first flattened portion 211b abuts against the second flattened portion 222, so that the ratchet 22 cannot rotate circumferentially relative to the output shaft 211, thereby improving the transmission efficiency between the output shaft 211 and the ratchet 22. It can be understood that the output shaft 211 and the ratchet 22 are not limited to being limited to the circumferential rotation by the flattened portion, and other methods can also be used. For example, the output shaft 211 can extend with an outer protrusion (not shown) near the first thread 211a, and the inner wall of the shaft hole of the ratchet 22 can be provided with a notch (not shown), and the outer protrusion is inserted into the notch so that the outer protrusion can limit the circumferential rotation of the ratchet 22.

[0042] Furthermore, the ratchet 22 has a tubular portion 223 extending around the shaft hole on the side away from the motor 21, and the turbine 23 at least partially passes through the tubular portion 223. The inner wall of the tubular portion 223 is provided with a second thread (not shown), and the second thread is located at the end of the inner wall of the tubular portion 223 away from the motor 21. The second thread is at least partially screwed to the first thread 211a, so that the ratchet 22 can be prevented from moving axially along the output shaft 211, thereby preventing the ratchet 22 and the turbine 23 from shaking or moving back and forth in the axial direction, thereby improving the driving stability of the drive assembly 200. The second flat portion 222 can extend to the inner wall of the tubular portion 223, and correspondingly, the first flat portion 211b of the output shaft 211 can also be extended accordingly to match the second flat portion 222, so that the first flat portion 211b of the output shaft 211 can better limit the circumferential rotation of the ratchet 22, further improving the transmission efficiency between the output shaft 211 and the ratchet 22. Considering that the turbine 23 needs to abut against the ratchet 22, the turbine 23 can pass through the tubular portion 223 of the ratchet 22. Therefore, the size of the axial hole of the turbine 23 should be larger than the size of the tubular portion 223, and the inner wall of the bearing 27 can also be fixed to the tubular portion 223, so that the turbine 23 can rotate relative to the tubular portion 223.

[0043] In some embodiments, the propulsion device 1000 also includes an acceleration component 300, which includes a spoiler 31, which passes through the output shaft 211 and is fixed to the housing component 100, and the spoiler 31 covers the ratchet 22 and the turbine 23. The end of the spoiler 31 close to the motor 21 is provided with a water inlet 31a, and the end of the spoiler 31 away from the motor 21 is provided with a water outlet spoiler port 31b, so that when the turbine 23 rotates, the fluid can flow in from the water inlet 31a of the spoiler 31, and flow out from the water outlet spoiler port 31b of the spoiler 31 after passing through the turbine 23, thereby accelerating the water inlet speed and further improving the forward speed of the propulsion device 1000; the number of the water inlet 31a and the water outlet spoiler port 31b can be multiple, and the multiple water inlets 31a and the water outlet spoiler port 31b are evenly arranged around the output shaft 211 to further accelerate the water inlet speed. It is understandable that the shape of the spoiler 31 is adjusted according to demand, for example, the radius of the cross section of the spoiler 31 gradually decreases along the direction from the water inlet 31a to the water outlet spoiler 31b to reduce the resistance of the fluid to the propulsion device 1000.

[0044] In some embodiments, the acceleration assembly 300 further includes a nozzle cover 32, one end of which is connected to the end of the spoiler cover 31 away from the motor 21, and the other end of the nozzle cover 32 is provided with a nozzle 321, the nozzle 321 is connected to the water outlet spoiler port 31b, the area of ​​the nozzle 321 is smaller than the area of ​​the water outlet spoiler port 31b, and the cross-sectional area of ​​the nozzle cover 32 gradually decreases along the direction from the spoiler cover 31 to the nozzle cover 32, and the cross-sectional area is the cross-sectional area of ​​the nozzle cover 32 perpendicular to the direction from the spoiler cover 31 to the nozzle cover 32, when the fluid flows from the water outlet spoiler port 31b through the nozzle cover 32, the flow rate will increase, and the fluid can generate a larger thrust when it flows out from the nozzle 321, so that the nozzle cover 32 can increase the propulsion efficiency of the propulsion device 1000. In addition, the nozzle cover 32 with a gradually decreasing cross-sectional area is also conducive to reducing the resistance of the fluid to the propulsion device 1000.

[0045] In some embodiments, the housing assembly 100 includes a housing 11, a seal 12 and a metal sleeve 13. The housing 11 is provided with the accommodating cavity 11a and two communicating ports 11b. The output shaft 211 passes through the communicating port 11b. The metal sleeve 13 is sleeved on the output shaft 211. The seal 12 is provided between the metal sleeve 13 and the inner wall of the communicating port 11b. The output shaft 211, the metal sleeve 13 and the seal 12 jointly seal the communicating port 11b; the seal 12 is tightly filled between the metal sleeve 13 and the communicating port 11b to prevent the fluid from entering the housing 11 from the communicating port 11b; the metal sleeve 13 is used to ensure the positioning of the output shaft 211 and the communicating port 11b, so that the output shaft 211 can rotate stably to prevent the output shaft 211 from rotating for a long time and wearing the seal 12, resulting in sealing failure. The metal sleeve 13 is preferably a copper sleeve.

[0046] Furthermore, the shell 11 includes a top cover 111 and a bottom shell 112, and the top cover 111 and the bottom shell 112 are respectively provided with a connecting port 11b, and the top cover 111 and the bottom shell 112 cover the accommodating cavity 11a. The combination of the top cover 111 and the bottom shell 112 facilitates the installation of spare parts such as the motor 21 on the shell 11; the shell assembly 100 also includes a sealing ring 113, and the sealing ring 113 is arranged around the abutment between the top cover 111 and the bottom shell 112 to prevent the fluid from entering the interior of the shell 11. The sealing ring 113 can be a soft silicone sealing ring 113, which can be deformed under the extrusion of the shell 11 and the bottom shell 112, so as to better seal the shell 11.

[0047] In order to facilitate readers to understand the utility model concept of the present utility model, the working process of the propulsion device 1000 is described below:

[0048] When the motor 21 is driven forward, the output shaft 211 drives the ratchet 22 to rotate forward, and the first slipping tooth 221 of the ratchet 22 on one side of the motor 21 engages with the second slipping tooth 231 of the turbine 23, thereby driving the turbine 23 to rotate at full speed, thereby generating an adsorption force and a thrust, and the first slipping tooth 221 of the ratchet 22 on the other side of the motor 21 slips with the second slipping tooth 231 of the turbine 23, and the turbine 23 and the ratchet 22 are always in a clutch state, so that no effect is generated; when the motor 21 stops rotating, the turbine 23 is in an elastic state. Under the action of the component 26, it returns to its original position and abuts against the ratchet 22; when the motor 21 is driven in the reverse direction, the output shaft 211 drives the ratchet 22 to rotate in the reverse direction, and the first slipping tooth 221 of the ratchet 22 on one side of the motor 21 slips with the second slipping tooth 231 of the turbine 23, and the turbine 23 and the ratchet 22 are always in a clutch state, so that no effect will be produced, and the first slipping tooth 221 of the ratchet 22 on the other side of the motor 21 engages with the second slipping tooth 231 of the turbine 23, thereby driving the turbine 23 to rotate at full speed, thereby generating adsorption force and thrust.

[0049] In the embodiment of the utility model, the propulsion device 1000 includes a shell assembly 100 and a drive assembly 200. The shell assembly 100 is provided with a accommodating chamber 11a and two communicating ports 11b. The two communicating ports 11b are respectively arranged on both sides of the shell assembly 100, and the two communicating ports 11b are respectively communicated with the accommodating chamber 11a; the drive assembly 200 includes a motor 21, two ratchet wheels 22 and two turbines 23. The motor 21 is accommodated in the accommodating chamber 11a. The motor 21 is provided with two output shafts 211. The two output shafts 211 are respectively arranged on both sides of the motor 21, and one of the output shafts 211 extends out of the connecting Through opening 11b, one of the ratchet wheels 22 is fixed to one of the output shafts 211, one of the ratchet wheels 22 is provided with a first slipping tooth 221, one of the turbine wheels 23 passes through one of the output shafts 211, one of the turbine wheels 23 is provided with a second slipping tooth 231, the first slipping tooth 221 abuts against the second slipping tooth 231, when the ratchet wheel 22 rotates along a first direction, the first slipping tooth 221 engages with the second slipping tooth 231, and the ratchet wheel 22 drives the turbine wheel 23 to rotate, when the ratchet wheel 22 rotates along a second direction, the first slipping tooth 221 cannot engage with the second slipping tooth 231, and the ratchet wheel 22 will slip relative to the turbine wheel 23. Through the above-mentioned method, when the motor 21 is driven in the forward direction, the ratchet 22 on one side drives the turbine 23 to rotate, and the ratchet 22 on the other side will slip relative to the turbine 23. When the motor 21 is driven in the reverse direction, the ratchet 22 on one side will slip relative to the turbine 23, and the ratchet 22 on the other side drives the turbine 23 to rotate. In this way, the propulsion device 1000 only needs one motor 21 to achieve the independent driving of the turbines 23 on both sides to rotate, which reduces the accommodation space required for the propulsion device 1000, thereby reducing the volume of the propulsion device 1000. In addition, the existing propulsion device 1000 with two or more motors 21 needs to design the accommodation space of the housing 11, and then design the structure of the housing 11. Compared with this, the housing 11 structure of the propulsion device 1000 with a single motor 21 of the present application is obviously simpler, that is, the structure of the propulsion device 1000 of the present application is simpler.

[0050] The utility model further provides an embodiment of a cleaning robot, which includes the propulsion device 1000 described above. The function and structure of the propulsion device 1000 can be found in the above embodiment, and will not be described in detail here.

[0051] It should be noted that the preferred embodiments of the utility model are given in the specification and drawings of the utility model, but the utility model can be implemented in many different forms and is not limited to the embodiments described in the specification. These embodiments are not used as additional restrictions on the content of the utility model. The purpose of providing these embodiments is to make the understanding of the disclosure of the utility model more thorough and comprehensive. In addition, the above-mentioned technical features continue to be combined with each other to form various embodiments not listed above, which are all regarded as the scope of the description of the utility model; further, for ordinary technicians in this field, they can be improved or transformed according to the above description, and all these improvements and transformations should belong to the scope of protection of the claims attached to the utility model.

Claims

1. A propulsion device, characterized in that: include: The housing assembly is provided with a receiving cavity and two communicating ports, wherein the two communicating ports are respectively provided on two sides of the housing assembly, and the two communicating ports are respectively communicated with the receiving cavity; A driving assembly, comprising a motor, two ratchets and two turbines, wherein the motor is accommodated in the accommodating chamber, the motor is provided with two output shafts, the two output shafts are respectively provided on both sides of the motor, one of the output shafts extends out of the communicating port, one of the ratchets is fixed to one of the output shafts, one of the ratchets is provided with a first slipping tooth, one of the turbines passes through one of the output shafts, one of the turbines is provided with a second slipping tooth, and the first slipping tooth abuts against the second slipping tooth; When the ratchet rotates in a first direction, the first slipping tooth engages with the second slipping tooth, and the ratchet drives the turbine to rotate. When the ratchet rotates in a second direction, the first slipping tooth cannot engage with the second slipping tooth, and the ratchet slips relative to the turbine.

2. The propulsion device according to claim 1, characterized in that: The turbine is arranged on a side of the ratchet wheel away from the motor, the first slipping tooth is arranged on a side of the ratchet wheel away from the motor, and the second slipping tooth is arranged on a side of the turbine wheel close to the motor.

3. The propulsion device according to claim 2, characterized in that: A first thread is provided at the end of the output shaft, and the drive assembly also includes a nut, a gasket and an elastic member. The nut is threadedly connected to the first thread, and the elastic member and the gasket both pass through the output shaft. One side of the elastic member abuts against a side of the turbine away from the motor, one side of the gasket abuts against the other side of the elastic member, and the nut abuts against the other side of the gasket.

4. The propulsion device according to claim 3, characterized in that: The output shaft is provided with a first flattened portion near the first thread, the shaft hole of the ratchet is provided with a second flattened portion, and the first flattened portion abuts against the second flattened portion.

5. The propulsion device according to claim 4, characterized in that: The ratchet has a tubular portion extending around the axial hole on the side away from the motor, the turbine at least partially passes through the tubular portion, the inner wall of the tubular portion is provided with a second thread, the second thread is located at an end of the inner wall of the tubular portion away from the motor, the second thread is at least partially screwed to the first thread, and the second flat portion extends to the inner wall of the tubular portion.

6. The propulsion device according to claim 3, characterized in that: The turbine is provided with a receiving groove on a side away from the motor, and the elastic member is at least partially received in the receiving groove.

7. The propulsion device according to any one of claims 1 to 6, characterized in that: The propulsion device also includes an acceleration component, which includes a spoiler. The spoiler passes through the output shaft and is fixed to the housing component. A water inlet is provided at one end of the spoiler close to the motor, and a water outlet spoiler is provided at one end of the spoiler away from the motor.

8. The propulsion device according to claim 7, characterized in that: The acceleration assembly also includes a nozzle cover, one end of the nozzle cover is connected to the end of the spoiler cover away from the motor, and the other end of the nozzle cover is provided with a nozzle, and the nozzle is connected to the water outlet spoiler port, and the area of ​​the nozzle is smaller than the area of ​​the water outlet spoiler port. Along the direction from the spoiler cover to the nozzle cover, the area of ​​the cross section of the nozzle cover gradually decreases, and the cross section is the cross section of the nozzle cover perpendicular to the direction from the spoiler cover to the nozzle cover.

9. The propulsion device according to any one of claims 1 to 6, characterized in that: The housing assembly comprises a housing, a sealing member and a metal sleeve. The metal sleeve is sleeved on the output shaft. The sealing member is arranged between the metal sleeve and the inner wall of the communication port. The output shaft, the metal sleeve and the sealing member seal the communication port together.

10. A cleaning robot, characterized in that: Comprising a propulsion device as claimed in any one of claims 1 to 9.

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