Sweeping robot

Abstract

The embodiment of the utility model provides a sweeping robot. The sweeping robot comprises a shell; the air draft system comprises an air draft pipe and a fan, the fan is arranged in the shell, one end of the air draft pipe is connected with the fan, the other end of the air draft pipe is exposed out of the shell, and a silencing part is arranged in the air draft pipe; the damping system comprises a suspension, a moving wheel and a damper, the suspension is connected in the shell and at least partially exposed out of the shell, the moving wheel is connected to the part, exposed out of the shell, of the suspension, and the damper is connected between the shell and the moving wheel. According to the embodiment of the invention, through the combined action of the air draft system and the damping system, the noise generated in the operation process of the sweeping robot can be reduced, and the user experience is improved.

Description

Technical Field

[0001] The present application belongs to the field of smart home technology, and specifically relates to a sweeping robot. Background Art

[0002] With the development of the smart home equipment industry and users' increasing demands for living standards, sweeping robots are becoming more and more common in users' daily lives.

[0003] Common sweeping robots on the market make loud noises during operation, which will affect the user's daily rest to a certain extent. Noise that lasts for a long time will also cause the user's irritability and reduce the user's experience of the sweeping robot. Utility Model Content

[0004] The present application aims to provide a sweeping robot to solve the problem of high noise during the operation of existing sweeping robots.

[0005] In order to solve the above technical problems, this application is implemented as follows:

[0006] The present application discloses a sweeping robot, comprising: a shell;

[0007] An exhaust system, the exhaust system comprising an exhaust pipe and a fan, the fan being arranged in the housing, one end of the exhaust pipe being connected to the fan, and the other end being exposed to the housing, and a silencer being arranged in the exhaust pipe;

[0008] The shock absorption system comprises a suspension, a moving wheel and a shock absorber, wherein the suspension is connected inside the shell and at least partially exposed outside the shell, the moving wheel is connected to the part of the suspension exposed outside the shell, and the shock absorber is connected between the shell and the moving wheel.

[0009] In one embodiment of the present application, the silencer is a spiral silencer tube.

[0010] In one embodiment of the present application, an exhaust port is provided on the shell, and the exhaust pipe includes a first end and a second end which are arranged in opposite directions, the first end is connected to the fan, the second end is connected to the exhaust port, and the spiral silencer extends from the first end to the second end.

[0011] In one embodiment of the present application, the exhaust system also includes a sound absorbing member, which is connected to the exhaust port, and the external air passes through the sound absorbing member into the exhaust pipe, and the sound absorbing member is used to absorb the noise of the gas entering the exhaust pipe.

[0012] In one embodiment of the present application, the sound absorbing member is a sound absorbing perforated plate.

[0013] In one embodiment of the present application, the aperture range of the sound-absorbing perforated plate is 0.5-1 cm, and the density range is 10-30 kg / m 3 .

[0014] In one embodiment of the present application, the shock absorber includes one of a hydraulic shock absorber and an air shock absorber.

[0015] In one embodiment of the present application, a moving wheel bracket is provided in the shell, the moving wheel bracket is fixedly connected to the shell and spaced apart from the moving wheel, the moving wheel includes a tire and a hub, the hub is connected to the inner wall of the tire, one end of the shock absorber is connected to the moving wheel bracket, and the other end is connected to the hub.

[0016] In one embodiment of the present application, the tire includes a tread, the tread is used to contact the ground, the tread is provided with protrusions, the protrusions extend from both sides of the tread toward the center of the tread along a first direction, and the first direction is set at an acute angle with the circumferential direction of the tire.

[0017] In one embodiment of the present application, the suspension is an independent suspension, and the independent suspension includes a third end and a fourth end that are arranged in opposite directions, and the third end and the fourth end are exposed from the shell. The number of the movable wheels is two, and the two movable wheels are respectively connected to the third end and the fourth end of the independent suspension.

[0018] In one embodiment of the present application, the independent suspension includes a suspension bracket and two connecting rods, the suspension bracket is fixedly connected in the shell, the two connecting rods are movably connected to both sides of the suspension bracket, one of the moving wheels is connected to one of the connecting rods, and the shock absorber is connected to the connecting rod.

[0019] In one embodiment of the present application, the suspension further includes two fixing members, one of the fixing members is connected between one of the connecting rods and the suspension bracket, wherein the fixing member is fixedly connected to the suspension bracket, and the movable wheel is movably connected to the fixing member.

[0020] In one embodiment of the present application, the suspension further includes two elastic members, wherein one of the elastic members is connected between one of the connecting rods and the suspension bracket.

[0021] In the embodiment of the present application, a silencer is provided in the exhaust pipe in the exhaust system. When the sweeping robot is performing the exhaust action, the silencer can reduce the noise caused by the exhaust process. At the same time, a shock absorber is provided in the shock absorption system of the sweeping robot. The shock absorber is connected between the bracket and the moving wheel. When the moving wheel of the sweeping robot encounters an uneven ground during movement, the shock absorber can absorb the impact from the ground, thereby reducing the vibration amplitude of the shell and reducing the noise generated during the movement of the moving wheel. Through the combined effect of the exhaust system and the shock absorption system, the embodiment of the present application can reduce the noise generated by the sweeping robot during operation and improve the user experience.

[0022] Additional aspects and advantages of the present application will be given in part in the description below, and in part will become apparent from the description below, or will be learned through the practice of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] The above and / or additional aspects and advantages of the present application will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0024] Figure 1 This is a bottom view of the sweeping robot described in an embodiment of the present application;

[0025] Figure 2 It is one of the schematic diagrams of the exhaust system described in the embodiment of the present application;

[0026] Figure 3 This is the second schematic diagram of the exhaust system described in the embodiment of the present application;

[0027] Figure 4 is a schematic diagram of a shock absorber according to an embodiment of the present application;

[0028] Figure 5 It is a schematic diagram of the assembly of the shock absorber and the moving wheel according to the embodiment of the present application;

[0029] Figure 6 is a perspective view of the assembly of the shock absorber, the moving wheel and the bracket according to the embodiment of the present application;

[0030] Figure 7 It is a schematic diagram of the external assembly of the shock absorber, the moving wheels and the bracket according to the embodiment of the present application;

[0031] Figure 8 is a side view of the tire of the moving wheel according to the embodiment of the present application;

[0032] Fig. 9 is a front view of the tire of the mobile wheel according to the embodiment of the present application;

[0033] Fig.10 It is a schematic diagram of the independent suspension described in the embodiment of the present application.

[0034] Figure numerals: 10 - shell, 101 - mounting groove, 201 - exhaust pipe, 202 - fan, 203 - sound absorbing member, 204 - exhaust port, 301 - suspension, 3011 - suspension bracket, 3012 - fixing member, 3013 - connecting rod, 3014 - elastic member, 302 - moving wheel, 3021 - tire, 3022 - wheel hub, 3023 - tread, 3024 - protrusion, 303 - shock absorber, 304 - moving wheel bracket. DETAILED DESCRIPTION

[0035] The embodiments of the present application will be described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present application, and should not be construed as limitations on the present application. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in the field without making creative work are within the scope of protection of the present application.

[0036] The term "first" or "second" in the specification and claims of this application may include one or more of the features explicitly or implicitly. In the description of this application, unless otherwise specified, "plurality" means two or more. In addition, "and / or" in the specification and claims means at least one of the connected objects, and the character " / " generally means that the objects connected before and after are in an "or" relationship.

[0037] In the description of the present application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0038] In the description of this application, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0039] The embodiment of the present application provides a sweeping robot, which is equipped with a cleaning structure and a moving structure, so that it can automatically complete the floor cleaning task. The sweeping robot in the embodiment of the present application has made improvements in the exhaust system and the shock absorption system, thereby reducing the noise generated by the sweeping robot during the floor cleaning process, and can reduce the irritability caused by the working noise of the sweeping robot during the user's use, thereby improving the user experience and helping to improve the competitiveness of the product.

[0040] In the embodiment of the present application, the front-to-back direction is the direction of forward or backward movement of the sweeping robot, and the left-to-right direction is perpendicular to the front-to-back direction.

[0041] The following is a detailed description of the sweeping robot provided by the present application in conjunction with the accompanying drawings and specific embodiments:

[0042] Reference Figure 1 , showing a bottom view of the sweeping robot according to an embodiment of the present application, referring to Figure 2 , shows one of the schematic diagrams of the exhaust system described in the embodiment of the present application, referring to Figure 3 , shows a second schematic diagram of the exhaust system described in the embodiment of the present application, referring to Figure 4 , showing a schematic diagram of the shock absorber 303 according to the embodiment of the present application, referring to Figure 5 , shows a schematic diagram of the assembly of the shock absorber 303 and the moving wheel 302 according to the embodiment of the present application, referring to Figure 6 , showing a perspective view of the assembly of the shock absorber 303, the moving wheel 302 and the bracket according to the embodiment of the present application, referring to Figure 7 , showing the external schematic diagram of the shock absorber 303, the moving wheel 302 and the bracket assembly according to the embodiment of the present application, referring to Figure 8 , showing a side view of the tire 3021 of the moving wheel 302 according to the embodiment of the present application, referring to Fig. 9 , showing a front view of the tire 3021 of the moving wheel 302 according to the embodiment of the present application, referring to Fig.10 , showing a schematic diagram of the independent suspension 301 described in an embodiment of the present application.

[0043] like Figures 1 to 10 As shown, the sweeping robot provided in the embodiment of the present application may specifically include:

[0044] The housing 10 is provided with a housing cavity, and the housing cavity of the housing 10 is used to accommodate the exhaust system, shock-absorbing system, driving structure, cleaning structure, dust collection structure, sensor, battery and other components of the sweeping robot. The housing 10 can provide sufficient support and protection for the internal structural components. For example, the housing 10 can be made of plastic materials such as PP, ABS, and PC, among which the PP material is flexible and light, and is not easy to generate noise; the ABS material has good impact resistance, and can provide better protection for the internal structural components when a collision occurs during the operation of the sweeping robot; the PC material has higher strength and better wear resistance, but it is not advantageous in terms of price. In practical applications, technicians can select the material of the housing 10 according to the actual needs of the product. In terms of noise reduction, the PP material is preferably used. The housing 10 made of PP material has good flexibility, which can reduce the noise generated when the sweeping robot collides with the external structure during operation.

[0045] Exhaust system, such as Figure 2 , Figure 3 As shown, the exhaust system includes an exhaust pipe 201 and a fan 202. The fan 202 is arranged in the housing 10. One end of the exhaust pipe 201 is connected to the fan 202, and the other end is exposed to the housing 10. A silencer is arranged in the exhaust pipe 201.

[0046] Specifically, the exhaust pipe 201 can be set as a circular pipe, the inner wall of which is smoother, thereby reducing the resistance to the air flow flowing therein, and helping to reduce the noise generated when the gas flows in the pipe.

[0047] The side wall of the housing 10 is provided with an air outlet, and the bottom is provided with a mounting groove 101, wherein the mounting groove 101 can be provided with a roller brush, and the side wall of the mounting groove 101 is provided with an air exhaust port 204, and the air exhaust pipe 201 and the fan 202 are both provided in the housing 10, and the air exhaust pipe 201 is connected to the external atmosphere through the air exhaust port 204. In practical applications, a side brush is also provided at the bottom of the housing 10, and during the cleaning process of the exhaust system, the fan 202 is in a working state, the side brush rotates in the direction of the roller brush, and sweeps the dust and debris on the ground to the roller brush, and the roller brush rotates synchronously, and the air exhaust pipe 201 connected to the external atmosphere is exhausted under the action of the fan 202, and the external atmosphere enters the air exhaust pipe 201 from the air exhaust port 204, and the air flow is transported from the air outlet to the outside of the housing 10 through the fan 202. In the process of the external atmosphere entering the air exhaust pipe 201, the garbage at the roller brush is driven by the air flow to be collected into the dust box or dust bag, thereby completing the garbage cleaning work. Since the exhaust pipe 201 is provided with a silencer, when the airflow passes through the exhaust pipe 201, the silencer can reduce the noise caused by the gas in the exhaust pipe 201 during the exhaust process.

[0048] In actual applications, the silencer can be a spiral silencer. When the silencer is a spiral silencer, the traditional exhaust pipe 201 can be replaced in whole or in part with the spiral silencer. In addition, the silencer can also be silencer cotton arranged on the inner wall of the exhaust pipe 201, wherein the silencer cotton can be made of foam plastic, glass fiber, plant fiber, etc., and bonded to the inner wall of the exhaust pipe 201 to achieve noise reduction function.

[0049] It should be noted that for some sweeping robot models that are not equipped with a roller brush, the exhaust port 204 can be set at the bottom of the shell 10, the side brush can rotate toward the exhaust port 204 and sweep the garbage to the vicinity of the exhaust port 204, and the fan 202 will suck the external air into the exhaust pipe 201 through the exhaust port 204 and collect the garbage into the dust box or dust bag.

[0050] Shock absorption systems, such as Figures 4 to 7 As shown, the shock absorption system includes a suspension 301, a moving wheel 302 and a shock absorber 303. The suspension 301 is connected inside the shell 10 and at least partially exposed outside the shell 10. The moving wheel 302 is connected to the part of the suspension 301 exposed outside the shell 10. The shock absorber 303 is connected between the shell 10 and the moving wheel 302.

[0051] Specifically, two openings are provided at the bottom of the shell 10, and the two openings are symmetrically arranged along the left and right directions of the sweeping robot. The suspension 301 is connected to the shell 10, and the two ends of the suspension 301 are exposed at the openings. The moving wheel 302 is partially located in the shell 10 and connected to the end of the suspension 301, and the other part of the moving wheel 302 is exposed to the shell 10 and parked on the ground to support the shell 10 at a certain height from the ground.

[0052] It should be noted that the moving wheel 302 here mainly refers to the driving wheel, which is the main moving device of the sweeping robot and is responsible for the forward, backward, turning and other actions of the sweeping robot. In addition, the sweeping robot is also provided with a universal wheel, which is connected to the bottom of the housing 10 and is located at the front end to help the sweeping robot turn and position flexibly.

[0053] It should be noted that in the existing sweeping robot, the moving wheel 302 is connected to the suspension 301. When the sweeping robot is in operation, when the ground is provided with a carpet, or the sweeping robot needs to pass a threshold, since there is no shock absorber 303 between the moving wheel 302 and the shell 10, the moving wheel 302 may fall from a high place to a low place when passing through an uneven ground and collide with the ground. The setting of the shock absorber 303 can buffer the impact between the moving wheel 302 and the ground, thereby reducing the noise generated by the sweeping robot during movement.

[0054] In an optional embodiment of the present application, the silencer is a spiral silencer tube.

[0055] The spiral silencer utilizes the acoustic resonance phenomenon. When the exhaust system is operating, the gas is continuously accelerated from the exhaust pipe under the action of the fan 202 to form a vortex, and the pressure and density of the airflow also increase accordingly. When the gas flow rate reaches a certain value, the gas in the exhaust pipe 201 resonates and fluctuates. Setting the silencer as a spiral silencer can reduce the movement speed of the gas in the exhaust pipe 201. In addition, the gas in the exhaust pipe is affected by the path difference effect and the reflection of sound waves, so that the noise in the spiral silencer can be eliminated.

[0056] In addition, the silencer can also be set as a spiral hollow silencer pipe, which converts noise into heat energy and sound wave energy through spiral air intake and exhaust, thereby further achieving a silencer effect.

[0057] In an optional embodiment of the present application, an exhaust port 204 is provided on the shell 10, and the exhaust pipe 201 includes a first end and a second end which are arranged in opposite directions, the first end is connected to the fan 202, and the second end is connected to the exhaust port 204, and the spiral silencer extends from the first end to the second end.

[0058] Specifically, the length direction of the exhaust pipe 201 is arranged along the front-rear direction of the sweeping robot, the exhaust port 204 is arranged near the front end, and the fan 202 is arranged near the rear end.

[0059] In practical applications, the entire exhaust pipe 201 uses a spiral silencer, which extends from the exhaust port 204 to connect with the fan 202. It can be understood that when the spiral silencer extends from the first end to the second end, when the external air enters the spiral silencer from the exhaust port 204, it begins to be affected by the spiral silencer, and the silencer distance of the spiral silencer is longer, thereby achieving a better silencer effect.

[0060] In another optional embodiment of the present application, the exhaust pipe 201 can also be used

[0061] In an optional embodiment of the present application, the exhaust system also includes a sound absorbing member 203, which is connected to the exhaust port 204. The external atmosphere passes through the sound absorbing member 203 and enters the exhaust pipe 201. The sound absorbing member 203 is used to absorb the noise of the gas entering the exhaust pipe 201.

[0062] In practical applications, the sound absorbing member 203 can be set to a shape that matches the air outlet 204 and bonded to the wall of the housing 10 where the air outlet 204 is located. Although a silencer is provided in the air outlet 201 of the exhaust system, the silencer can reduce the noise generated when the airflow flows in the air outlet 201, but since the air outlet 204 is an opening, part of the sound waves of the noise will still be transmitted from the air outlet 204. The sound absorbing member 203 is provided at the air outlet 204 to absorb the sound waves leaking from the air outlet 201, thereby improving the noise reduction effect of the exhaust system.

[0063] For example, the sound absorbing member 203 can be a perforated plate, a thin film sound absorbing structure, etc., and the present application does not make specific limitations on this. However, when selecting the sound absorbing member 203, it is necessary to consider the efficiency of the airflow to prevent the setting of the sound absorbing member 203 from greatly weakening the dust collection effect of the sweeping robot.

[0064] In an optional embodiment of the present application, the sound absorbing member 203 is a sound absorbing perforated plate.

[0065] The sound absorption principle of perforated plates is to introduce air impedance differences to cause sound waves to reflect and scatter in the material, thereby achieving the purpose of sound absorption. Specifically, when sound waves propagate in the material, they will come into contact with the surface of the material, and part of the energy will be reflected back, part of the energy will be absorbed, and part of the energy will be converted into heat energy through scattering and refraction. The holes in the perforated plate can increase the surface area of ​​the material and increase the contact area between the material and the air, thereby enhancing the sound absorption effect of the material.

[0066] It should be noted that in the sound-absorbing perforated plate structure, the smaller the aperture and the greater the density, the better the sound absorption effect. However, the aperture size will affect the air intake. If the aperture is too small, the air intake may be affected and the dust absorption effect may be reduced. In actual applications, technicians can reasonably design the aperture and density of the sound-absorbing perforated plate according to the specific product positioning and needs.

[0067] In practical applications, the material of the sound-absorbing perforated plate can be wood, fiberboard or metal, and the holes on the sound-absorbing perforated plate can be round holes, square holes or holes of other shapes, which are not specifically limited in this application. In addition, when selecting the sound-absorbing perforated plate, the edges of the holes should be relatively smooth, so that the resistance of the gas entering the exhaust pipe 201 can be reduced, thereby increasing the air intake and helping to improve the dust collection effect of the sweeping robot.

[0068] In the embodiment of the present application, the sound-absorbing perforated plate is a metal sound-absorbing perforated plate. The metal sound-absorbing perforated plate is composed of many small holes, which effectively increases the permeability of the gas. After punching, the hole edges of the metal sound-absorbing perforated plate can be smoother.

[0069] Furthermore, aluminum alloy sound-absorbing perforated panels can be selected. It should be noted that aluminum alloy sound-absorbing perforated panels are more aesthetically pleasing and have better sound absorption effects, which help to enhance the noise reduction effect.

[0070] Optionally, the aperture of the sound-absorbing perforated plate ranges from 0.5 to 1 cm and the density ranges from 10 to 30 kg / m 3 .

[0071] For example, in the embodiment of the present application, the aperture of the sound-absorbing perforated plate is 1 cm and the density is 10 kg / m 3 It should be noted that low-density sound-absorbing perforated panels are lighter and less expensive while achieving the sound-absorbing function.

[0072] Since the sound-absorbing perforated plate is connected to the air outlet 204, and the area of ​​the air outlet 204 of the sweeping robot is relatively small, the relationship between the aperture and the sound absorption effect needs to be comprehensively considered. When the aperture is too large, the sound absorption effect of the sound-absorbing perforated plate may be weakened, and when the aperture is too small, the air intake may be affected and the dust absorption effect may be affected. In actual applications, the aperture of the sound-absorbing perforated plate also needs to be selected in combination with the size of the air outlet 204 and the power of the fan 202 to achieve a better balance between the dust absorption effect and the sound absorption effect.

[0073] In an optional embodiment of the present application, the shock absorber 303 is a hydraulic shock absorber 303 .

[0074] Specifically, if Figure 4 As shown, the hydraulic shock absorber 303 may include a hydraulic damper and a spring sleeved on the outside of the hydraulic damper. One end of the hydraulic damper is connected to the moving wheel bracket 304, and the other end of the hydraulic damper is connected to the moving wheel 302. The hydraulic damper includes a pressure cylinder, and a working chamber and an oil storage chamber are provided in the pressure cylinder. The working chamber is provided with a piston, and the piston can separate the space in the working chamber; the working chamber and the oil storage chamber are both filled with hydraulic oil, and a piston rod is connected to the piston, and the other end of the piston rod is located outside the pressure cylinder and connected to the moving wheel 302, and the pressure cylinder is connected to the moving wheel bracket 304. In actual application, when the moving wheel 302 collides with the uneven ground, the moving wheel bracket 304 first presses down the pressure cylinder, and the piston rod pushes the piston to produce displacement in the working chamber. The movement of the piston in the working chamber can control the flow of hydraulic oil between the working chamber and the oil storage chamber. The oil pressure of the hydraulic oil in the working chamber can change the movement speed of the piston, and the piston rod connects the piston and the moving wheel 302 respectively, thereby adjusting the relative movement speed between the moving wheel bracket 304 and the moving wheel 302. It should be noted that the hydraulic damper has the characteristics of high control accuracy and sensitive response. A spring is arranged outside the hydraulic damper. The spring and the damper work together to help improve the shock absorption effect of the hydraulic shock absorber 303.

[0075] In another optional embodiment of the present application, the shock absorber 303 is an air shock absorber 303 .

[0076] Specifically, the air shock absorber 303 is generally composed of a closed air chamber and a shock-absorbing cavity connected thereto. When an external force causes the shock absorber 303 to vibrate, the air in the air chamber will quickly compress or expand to absorb and release energy, thereby reducing the amplitude and frequency of the vibration. When the shock absorber 303 is impacted by an external force, the air inside will be compressed to absorb and disperse energy, effectively reducing the impact of the impact on other components. Similarly, when the shock absorber 303 is subjected to a tensile force, the air inside will expand and can also play a shock-absorbing role. By adjusting the air pressure and volume in the air chamber, the shock-absorbing effect of the shock absorber 303 can be freely adjusted to meet different usage requirements.

[0077] like Figure 6 , Figure 7 As shown, in an optional embodiment of the present application, a moving wheel bracket 304 is arranged in the shell 10, the moving wheel bracket 304 is fixedly connected to the shell 10 and is spaced apart from the moving wheel 302, the moving wheel 302 includes a tire 3021 and a hub 3022, the hub 3022 is connected to the inner wall of the tire 3021, one end of the shock absorber 303 is connected to the moving wheel bracket 304, and the other end is connected to the hub 3022.

[0078] The moving wheel bracket 304 may be configured as a semi-enclosed structure, wherein the upper portion of the moving wheel 302 is surrounded by the moving wheel bracket 304 , and the lower portion of the moving wheel 302 is exposed from the moving wheel bracket 304 .

[0079] In actual applications, many parts are arranged inside the shell 10, and the moving wheel 302 will be contaminated with water stains, dust, garbage, etc. on the ground during movement. The moving wheel bracket 304 with a semi-enclosed structure can separate the moving wheel 302 part located inside the shell 10 from other parts, thereby preventing water stains, dust, garbage and other dirt on the moving wheel 302 from entering the shell 10 and contaminating other parts, ensuring the cleanliness of other parts inside the shell 10, and preventing parts from being damaged by contamination, thereby extending the service life of the sweeping robot. In addition, since a battery and a circuit structure are also arranged inside the shell 10, the moving wheel bracket 304 is arranged to separate the moving wheel 302 from other internal parts, which can effectively prevent the accumulated water on the tire 3021 from splashing into the shell 10 to cause a short circuit, thereby ensuring the safety and reliability of the sweeping robot.

[0080] In an optional embodiment of the present application, the tire 3021 includes a tread 3023, the tread 3023 is used to contact the ground, and the tread 3023 is provided with a protrusion 3024, and the protrusion 3024 extends from both sides of the tread 3023 to the center of the tread 3023 along a first direction, and the first direction is arranged at an acute angle with the circumferential direction of the tire 3021. Specifically, Figure 8 , Fig. 9 As shown, the protrusions 3024 on the tread 3023 form a strip-shaped leaf-like pattern on the surface of the tread 3023, and the extending direction of the pattern is between the transverse direction and the longitudinal direction.

[0081] In practical applications, different shapes of tire 3021 patterns will have a certain impact on the grip, drainage performance and maneuverability of the tire 3021. Compared with the transverse pattern, the oblique pattern in the embodiment of the present application can provide better drainage performance, reduce the probability of the tire 3021 slipping due to wet ground, and have better silent performance; compared with the longitudinal pattern, the oblique pattern in the embodiment of the present application can provide better control performance and braking performance, and can maintain better stability when the sweeping robot needs to slow down or turn.

[0082] It should be noted that when the sweeping robot is cleaning the ground, the friction between the tire 3021 and the ground will be different due to the influence of the floor material. When the ground is smoother or there is water on the ground, the friction between the tire 3021 and the ground is smaller. Setting the tread 3023 to the above structure can increase the friction between the tire 3021 and the ground while also facilitating the drainage of the tread 3023 of the tire 3021. Specifically, the grooves between the protrusions 3024 have a diversion effect on the water on the tread 3023, and the water on the tread 3023 can flow to the ground along the grooves between the protrusions 3024.

[0083] Furthermore, butyl rubber can be selected for tire 3021. Butyl rubber lacks double bonds in its molecular structure and has a high density of side chain methyl distribution, so it has good characteristics of absorbing vibration and impact energy. Within a wide temperature range (-30-50°C), the rebound characteristics of butyl rubber are no more than 20%. Therefore, butyl rubber has better ability to absorb mechanical properties than other rubbers. Therefore, tire 3021 made of this material can have good shock absorption performance, thereby improving the noise reduction effect of the sweeping robot.

[0084] In addition, the highly saturated structure of the butyl rubber molecular chain makes it highly resistant to ozone and weather aging, as well as having high chemical stability, acid resistance, alkali resistance, and oxidation-reduction resistance, thereby increasing the service life of the sweeping robot tire 3021.

[0085] In an optional embodiment of the present application, the suspension 301 is an independent suspension 301, and the independent suspension 301 includes a third end and a fourth end that are set apart from each other, and the third end and the fourth end are exposed from the shell 10. The number of movable wheels 302 is two, and the two movable wheels 302 are respectively connected to the third end and the fourth end of the independent suspension 301.

[0086] In actual application, the independent suspension 301 is spaced apart from the exhaust system, and the two ends of the independent suspension 301 are responsible for connecting the two moving wheels 302, and the moving wheels 302 on both sides are independently connected to the independent suspension 301. It can be understood that, similar to the independent suspension 301 in the vehicle, its axle is a disconnected axle, so that when the wheel on one side is impacted, its movement does not directly affect the wheel on the other side. In the sweeping robot, the application of this independent suspension 301 can avoid the moving wheel 302 on one side from affecting the moving wheel 302 on the other side when it is impacted. Since the two do not interfere with each other, the noise of the moving wheel 302 of the sweeping robot during movement can be reduced.

[0087] In an optional embodiment of the present application, Fig.10 As shown, the independent suspension 301 includes a suspension bracket 3011 and two connecting rods 3013. The suspension bracket 3011 is fixedly connected in the shell 10. The two connecting rods 3013 are movably connected to both sides of the suspension bracket 3011. A moving wheel 302 is connected to a connecting rod 3013, and the shock absorber 303 is connected to the connecting rod 3013.

[0088] Specifically, the suspension bracket 3011 is fixedly connected in the housing 10, the connecting rod 3013 is fixedly connected to the left and right sides of the suspension bracket 3011, the moving wheel 302 includes a tire 3021 and a wheel hub 3022, and the connecting rod 3013 is connected to the wheel hub 3022. When the moving wheel 302 passes through an uneven ground, the moving wheel 302 will vibrate, and the connecting rod 3013 will vibrate synchronously with the vibration of the moving wheel 302. However, since the suspension bracket 3011 and the connecting rod 3013 are movably connected, the suspension bracket 3011 can remain in place without being affected by the connecting rod 3013, or only vibrate slightly with a small amplitude. Since the suspension bracket 3011 is fixedly connected in the housing 10, the housing 10 basically does not vibrate or only vibrates slightly, and the moving smoothness of the sweeping robot is improved. Since the vibration amplitude of the housing 10 is small, the vibration amplitude of the components inside the housing 10 is also small, which improves the structural stability of the sweeping robot and helps to extend the service life of the sweeping robot.

[0089] In practical applications, the connecting rod 3013 may be a stainless steel connecting rod 3013 , which can improve the strength, rigidity and stability of the connecting rod 3013 .

[0090] Optionally, the suspension 301 further includes two fixing members 3012 , wherein one fixing member 3012 is connected between a connecting rod 3013 and the suspension bracket 3011 , wherein the fixing member 3012 is fixedly connected to the suspension bracket 3011 , and the moving wheel 302 is movably connected to the fixing member 3012 .

[0091] The fixing part 3012 is connected between the suspension bracket 3011 and the connecting rod 3013. Since the fixing part 3012 has a certain length, when the structural size of the sweeping robot is certain, the setting of the fixing part 3012 reduces the length of the connecting rod 3013. Since the independent suspension 301 uses the lever principle, the reduction in the length of the connecting rod 3013 helps to reduce the impact of the vibration of the moving wheel 302 on the suspension bracket 3011, thereby improving the smoothness of the movement of the sweeping robot.

[0092] In practical applications, the connecting rod 3013 can be hinged to the fixing member 3012 , so that the moving wheel 302 fixedly connected to the connecting rod 3013 can rotate in all directions, thereby improving the flexibility of the moving wheel 302 .

[0093] Optionally, the suspension 301 further includes two elastic members 3014 , wherein one elastic member 3014 is connected between one connecting rod 3013 and the suspension bracket 3011 .

[0094] In the embodiment of the present application, the elastic member 3014 is a spiral steel wire spring, and the suspension bracket 3011 has a spring connecting portion extending toward the moving wheels 302 on the left and right sides. The spring connecting portion is opposite to the connecting rod 3013 in the vertical direction, and the spring is vertically connected between the spring connecting portion and the connecting rod 3013. When the moving wheel 302 moves on an uneven road surface, the spring can switch between a compressed state and a stretched state, and the suspension bracket 3011 can remain in place, so that the sweeping robot remains at its original height, thereby improving the smoothness of the movement of the sweeping robot. The improved smoothness of the movement of the sweeping robot helps to reduce the noise during the movement of the sweeping robot.

[0095] In addition, the elastic member 3014 can also use an air spring, which is filled with compressed air in a retractable sealed container and uses the elastic effect of air to achieve its spring function. The air spring is light in weight, has low internal friction, excellent shock absorption effect, good noise reduction performance, and can adjust the pressure in the rubber airbag to adjust its stiffness and load-bearing capacity to adapt to the operating conditions of the sweeping robot.

[0096] In summary, the sweeping robot provided by the embodiment of the present application has at least the following advantages:

[0097] In the embodiment of the present application, a silencer is provided in the exhaust pipe in the exhaust system. When the sweeping robot is performing the exhaust action, the silencer can reduce the noise caused by the exhaust process. At the same time, a shock absorber is provided in the shock absorption system of the sweeping robot. The shock absorber is connected between the bracket and the moving wheel. When the moving wheel of the sweeping robot encounters an uneven ground during movement, the shock absorber can absorb the impact from the ground, thereby reducing the vibration amplitude of the shell and reducing the noise generated during the movement of the moving wheel. Through the combined effect of the exhaust system and the shock absorption system, the embodiment of the present application can reduce the noise generated by the sweeping robot during operation and improve the user experience.

[0098] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials, or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described may be combined in any one or more embodiments or examples in a suitable manner.

[0099] Although the embodiments of the present application have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present application, and that the scope of the present application is defined by the claims and their equivalents.

Claims

1. A sweeping robot, characterized in that: include: case; An exhaust system, the exhaust system comprising an exhaust pipe and a fan, the fan being arranged in the housing, one end of the exhaust pipe being connected to the fan, and the other end being exposed to the housing, and a silencer being arranged in the exhaust pipe; The shock absorption system comprises a suspension, a moving wheel and a shock absorber, wherein the suspension is connected inside the shell and at least partially exposed outside the shell, the moving wheel is connected to the part of the suspension exposed outside the shell, and the shock absorber is connected between the shell and the moving wheel.

2. The sweeping robot according to claim 1, characterized in that: The silencer is a spiral silencer pipe.

3. The sweeping robot according to claim 2, characterized in that: The shell is provided with an air exhaust port, the air exhaust pipe includes a first end and a second end which are arranged in opposite directions, the first end is connected to the fan, the second end is connected to the air exhaust port, and the spiral silencer pipe extends from the first end to the second end.

4. The sweeping robot according to claim 3, characterized in that: The exhaust system also includes a sound absorbing member, which is connected to the exhaust port. External air passes through the sound absorbing member and enters the exhaust pipe. The sound absorbing member is used to absorb the noise of the gas entering the exhaust pipe.

5. The sweeping robot according to claim 4, characterized in that: The sound absorbing member is a sound absorbing perforated plate.

6. The sweeping robot according to claim 5, characterized in that: The aperture range of the sound-absorbing perforated plate is 0.5-1 cm, and the density range is 10-30 kg / m 3 .

7. The sweeping robot according to claim 1, characterized in that: The shock absorber includes one of a hydraulic shock absorber and an air shock absorber.

8. The sweeping robot according to claim 1, characterized in that: A moving wheel bracket is arranged in the shell, the moving wheel bracket is fixedly connected to the shell and spaced apart from the moving wheel, the moving wheel comprises a tire and a hub, the hub is connected to the inner wall of the tire, one end of the shock absorber is connected to the moving wheel bracket, and the other end is connected to the hub.

9. The sweeping robot according to claim 8, characterized in that: The tire comprises a tread, the tread is used for contacting the ground, the tread is provided with protrusions, the protrusions extend from both sides of the tread toward the center of the tread along a first direction, and the first direction is arranged at an acute angle with the tire circumferential direction.

10. The sweeping robot according to claim 1, characterized in that: The suspension is an independent suspension, and the independent suspension includes a third end and a fourth end that are arranged in opposite directions, and the third end and the fourth end are exposed from the shell. The number of the movable wheels is two, and the two movable wheels are respectively connected to the third end and the fourth end of the independent suspension.

11. The sweeping robot according to claim 10, characterized in that: The independent suspension includes a suspension bracket and two connecting rods, the suspension bracket is fixedly connected in the shell, the two connecting rods are movably connected to both sides of the suspension bracket, one of the moving wheels is connected to one of the connecting rods, and the shock absorber is connected to the connecting rod.

12. The sweeping robot according to claim 11, characterized in that: The suspension also includes two fixing members, one of which is connected between one of the connecting rods and the suspension bracket, wherein the fixing member is fixedly connected to the suspension bracket, and the moving wheel is movably connected to the fixing member.

13. The sweeping robot according to claim 12, characterized in that: The suspension further comprises two elastic members, wherein one of the elastic members is connected between one of the connecting rods and the suspension bracket.

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