A sweeping robot

Abstract

The present invention discloses a sweeping robot, which comprises: an air duct; a rear adsorption device, which is arranged at the rear of the air duct at the suction port; and a device for controlling the suction position generated by the air duct at the suction port to be concentrated at a position slightly behind the suction port. The present invention sets the suction position below the suction port to a position slightly behind the suction port by adding a device for controlling the suction position generated by the air duct at the suction port to be concentrated at a position slightly behind the suction port. Therefore, if the sweeping robot does not clean the area at one time when passing through a certain place normally, the remaining part will be taken away by the rear adsorption device. When the sweeping robot continues to move, the suction port continues to generate suction at the rear adsorption device, and continuously sucks away large particles of dust or garbage attached to the rear adsorption device. This greatly improves the cleaning efficiency of the whole machine and enhances the user experience.

Description

Technical Field

[0001] The present invention relates to the technical field of robots, and in particular to a sweeping robot. Background Art

[0002] As a machine that can replace people to clean the floor, the sweeping robot uses a power source inside the main unit that can generate wind. Through various wind duct structures of varying complexity, a suction force is generated at the suction port, which can suck dust and particles on the floor into a dust collection device. Therefore, the size of the suction force at the suction port and the way of dust collection directly determine the cleaning efficiency and practicality of the sweeping robot.

[0003] Existing vacuuming methods of sweeping robots include roller brush vacuuming and simple suction port vacuuming. The suction port vacuuming uses a fan power source through different air ducts to generate a suction force at the suction port. This suction force directly acts on the ground and sucks the garbage on the ground into the dust collection device. Due to the position limitation of the fan power source and the need for air duct design, the vacuuming efficiency of the whole machine is greatly reduced, and the user experience is not ideal.

[0004] Therefore, it is desired to have a technical solution to overcome or at least alleviate at least one of the above-mentioned defects of the prior art. Summary of the invention

[0005] An object of the present invention is to provide a sweeping robot to overcome or at least alleviate at least one of the above-mentioned defects of the prior art.

[0006] To achieve the above-mentioned purpose, the present invention provides a sweeping robot, which includes: an air duct; a rear adsorption device, which is arranged at the rear part of the air duct at the suction port; and a device for controlling the suction position generated by the air duct at the suction port to be concentrated at the rear part below the suction port.

[0007] Furthermore, the device for controlling the suction position generated by the air duct at the suction port to be concentrated below and slightly behind the suction port includes: a baffle, which is arranged at the front part of the air duct, the upper part of the baffle is fixedly arranged, and the lower part of the baffle is arranged to be inclined backward from top to bottom.

[0008] Furthermore, the height between the bottom end of the baffle and the ground is set within a first preset range.

[0009] Furthermore, the distance between the bottom end of the baffle and the rear adsorption device in the front-to-rear direction is set within a second preset range.

[0010] Furthermore, the lower portion of the baffle is arranged in an arc shape that is inclined backward from top to bottom.

[0011] Furthermore, the baffle is a flat plate structure.

[0012] Furthermore, the adsorption device includes: a mounting plate, which is arranged at the rear of the suction port; and a wind collecting plate, wherein two wind collecting plates are respectively arranged on the left and right sides of the mounting plate, and the two wind collecting plates are inclined forward and extend outward relative to the mounting plate.

[0013] Furthermore, the length of the mounting plate is greater than that of the baffle plate, and the length of the projection of the wind collecting plate in the front-to-back direction is greater than the distance between the baffle plate and the mounting plate in the front-to-back direction.

[0014] Furthermore, the baffle and the rear adsorption device are made of soft materials.

[0015] The present invention adds a device for controlling the suction position generated by the air duct at the suction port to be concentrated behind the suction port, and sets the suction position below the suction port to be behind the suction port. Therefore, if the sweeping robot fails to suck cleanly at one time when passing through a certain place normally, the remaining part will be taken away by the rear suction device. When the sweeping robot continues to move, the suction port continues to generate suction at the rear suction device, and continuously sucks away large particles of dust or garbage attached to the rear suction device. This will greatly improve the cleaning efficiency of the whole machine and enhance the user experience. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a structural schematic diagram of an embodiment of the sweeping robot provided by the present invention.

[0017] Figure 2 yes Figure 1 A partial enlarged schematic diagram of part A in the middle.

[0018] Figure 3 yes Figure 2 Schematic diagram of the longitudinal section of the baffle.

[0019] Figure 4 yes Figure 1 A bottom view of the suction port of the sweeping robot.

[0020] Reference numerals:

[0021] 1 Air duct 2 Bezel 3 Post-adsorption device 4 Fan 5 Dust box 12 Suction port 21 Lower part of the baffle 22 Upper part of the baffle 23 Middle of the baffle 31 Mounting Plate 32 Wind board h First preset range L Second preset range B Sweeping Robot C ground DETAILED DESCRIPTION

[0022] In the drawings, the same or similar reference numerals are used to represent the same or similar elements or elements with the same or similar functions. The embodiments of the present invention are described in detail below in conjunction with the drawings.

[0023] In the present invention, "front", "back", "up", "down", "left", "right", "inside" and "outside" are determined according to the daily usage habits of the sweeping robot. For example, the front of the sweeping robot is regarded as the "front", the back of the sweeping robot is regarded as the "back", the top surface of the sweeping robot is regarded as the "up", and the bottom surface of the sweeping robot is regarded as the "down". "Left" and "right" are based on the "front" and "back". "Inside" and "outside" are relative to the overall structure of the sweeping robot. The direction pointing to the sweeping robot is "inward", and the direction away from or away from the sweeping robot is "outward".

[0024] like Figures 1 to 4 As shown, the sweeping robot B provided in this embodiment includes a fan 4, a dust box 5, an air duct 1 and a rear adsorption device 3, wherein: the fan 4 provides a negative pressure airflow, and is gas-connected with the dust box 5 and the air duct 1 in sequence, and the suction port 11 of the air duct 1 is exposed to the outside. After the fan 4 is turned on, the negative pressure airflow provided by the fan 4 passes through the dust box 5 and generates suction below the suction port 11. The particle dust or garbage below the suction port 11 will enter the air duct 1 through the suction port 11 under the action of the suction force, and then be sucked into the dust box 5.

[0025] The rear suction device 3 is arranged at the rear of the suction port 11, and the dust that cannot be removed by the suction port 11 and remains in front of the rear suction device 3 is attached to the rear suction device 3 when the rear suction device 3 passes by. Figure 4 As shown, the rear adsorption device 3 is roughly U-shaped, and the rear adsorption device 3 includes a mounting plate 31 and an air collecting plate 32. The mounting plate 31 is arranged at the rear of the suction port 11. The two air collecting plates 32 are respectively arranged on the left and right sides of the mounting plate 31, and the two air collecting plates 32 extend outwardly and tilted forward relative to the mounting plate 31. This structure is conducive to gathering the airflow discharged from the suction port 11 and concentrating the suction force at the suction port 11. The rear adsorption device 3 in the prior art is made of rubber, and can also be made of PET material, non-woven fabric, etc. Preferably, the length of the mounting plate 31 is greater than that of the baffle 2, and the length of the projection of the air collecting plate 32 in the front-to-back direction is greater than the distance between the baffle 2 and the mounting plate 31 in the front-to-back direction.

[0026] On the basis of the above structure, this embodiment further adds a device for controlling the suction position generated by the air duct 1 at the suction port 11 to be concentrated behind the suction port 11. The device can set the suction position below the suction port 11 to a position behind the suction port 11. In this way, if the sweeping robot does not clean all the parts at one time when passing through a certain place normally, the remaining parts will be taken away by the rear adsorption device 3. In the process of continuing to move forward, the suction port 11 continues to generate suction on the rear adsorption device 3, and continuously sucks away large particles of dust or garbage adsorbed on the rear adsorption device 3, which greatly improves the cleaning efficiency of the whole machine and enhances the user experience.

[0027] Combination Figures 2 to 3As shown, in one embodiment, the device for controlling the suction force position generated by the air duct 1 at the suction port 11 to be concentrated behind the suction port 11 includes a baffle 2 arranged in the front part of the air duct 1. The upper part 22 of the baffle 2 is fixedly arranged, and the lower part 21 of the baffle 2 is arranged to be inclined backward from top to bottom. In other words, the bottom of the baffle 2 extends toward the rear adsorption device 3 behind the suction port 11.

[0028] In this embodiment, the baffle 2 is added to change the suction direction formed by the negative pressure airflow, so that the suction position is mainly concentrated behind the suction port 11. The baffle 2 has at least two advantages:

[0029] On the one hand, since the baffle 2 and the rear adsorption device 3 almost surround the suction port 11 on all four sides, it is beneficial for the negative pressure airflow corresponding to the suction force in the suction port 11 to surround all four sides and concentrate the negative pressure airflow, which is beneficial to increase the suction force per unit area of ​​the ground C and increase the dust suction capacity of the suction port 11 on the ground C. On the other hand, since the smaller the suction port 11, the more concentrated the suction force, and the stronger the suction force of the suction port 11 on the ground C, under the same suction conditions, the suction force can be increased by reducing the suction port 11. However, when the suction port 11 is reduced, large particles of garbage cannot be cleaned. Therefore, in this embodiment, a baffle 2 is added to the front of the suction port 11, so that the cross-sectional area of ​​the suction port 11 can be increased, and the size of the bottom of the suction port 11 can be reduced by the baffle 2.

[0030] like Figure 2 As shown, in one embodiment, the height h between the bottom of the baffle 2 and the ground C is set within a first preset range, and the range of h is preferably 8-10 mm. This embodiment mainly considers that the default height of large particles of garbage (such as soybeans, peanuts, etc.) does not exceed 8 mm, so when there are large particles of garbage on the ground, they can be pushed away by the baffle 2.

[0031] like Figure 4 As shown, the air duct 1 is provided with a rear adsorption device 3 at the rear of the suction port 11, and the distance L between the bottom end of the baffle 2 and the rear adsorption device 3 in the front-to-back direction is set within a second preset range. If the value of L is too large, it will affect the suction force and is not conducive to the concentration of the suction force. If L is too small, large particles of garbage cannot be sucked up. Therefore, L needs to consider the size of large particles of garbage (such as soybeans, peanuts, etc.). In this embodiment, the range of L is preferably 8-10 mm.

[0032] like Figure 3 As shown, the lower portion 21 of the baffle 2 is arranged in an arc shape that tilts backward from top to bottom. In order to facilitate the installation of the baffle 2, the upper portion 22 of the baffle 2 is arranged in a step shape. When assembling, it is only necessary to press the air duct 1 on the upper portion 22 of the baffle 2. This is not only simple to assemble, but also very firm to install, and prevents the baffle 2 suspended at the suction port 11 from being sucked away when the suction force is large.

[0033] The baffle 2 can also be set as a flat plate structure, such as Figure 4 The baffle plate 2 may also be in other shapes, which will not be described in detail here, as long as the baffle plate 2 can better control the suction force generated by the air duct 1 at the suction port 11 to be concentrated behind the suction port 11.

[0034] In one embodiment, the baffle 2 is made of a soft material, which may be a rubber material, or a PET material, a non-woven fabric, etc. This helps to ensure that the sweeping robot can avoid obstacles when it encounters obstacles during its movement. Moreover, when the baffle 2 is made of a soft material, when there are large particles that exceed the size of the suction port 11, if the suction force meets the requirements, the larger particles can be sucked away by the deformation of the baffle 2.

[0035] In order to solve the obstacle avoidance problem, the existing sweeping robots have made the suction port into a floating type, so that the distance between the suction port and the ground becomes smaller. When encountering an obstacle, the suction port floats up through the floating structure, thereby minimizing the impact of lowering the suction port on the obstacle crossing of the whole machine. However, this structure will inevitably affect the obstacle crossing ability of the whole machine when climbing over obstacles due to the addition of a set of floating structures. At the same time, due to the addition of a set of floating structures, the probability of problems with this floating structure increases. In addition, since this structure needs to meet the requirements of the floating structure, the sealing of the components cannot be perfect, and eventually part of the suction force will be lost.

[0036] From this comparison, it can be seen that the baffle 2 provided in this embodiment can not only control the suction position generated by the air duct 1 at the suction port 11 to be concentrated behind the suction port 11, but also avoid obstacles better based on its soft material without any impact on air tightness.

[0037] Finally, it should be pointed out that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit them. Those skilled in the art should understand that the technical solutions described in the above embodiments may be modified, or some of the technical features thereof may be replaced by equivalents; these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A sweeping robot, characterized in that: include: Air duct (1); A rear adsorption device (3), the rear adsorption device (3) being arranged at the rear of the suction port (11) of the air duct (1); as well as A device for controlling the suction force position generated by the air duct (1) at the suction port (11) to be concentrated at a position slightly below and behind the suction port (11), the device for controlling the suction force position generated by the air duct (1) at the suction port (11) to be concentrated at a position slightly below and behind the suction port (11) comprises: a baffle (2), the baffle (2) being arranged at the front of the air duct (1), the upper part (22) of the baffle (2) being fixedly arranged, and the lower part (21) of the baffle (2) being arranged to be inclined backward from top to bottom, The height (h) between the bottom end of the baffle (2) and the ground is set within a first preset range, wherein the first preset range is 8-10 mm. The rear adsorption device (3) comprises: a mounting plate (31), the mounting plate (31) being arranged at the rear of the suction port (11); and a wind collecting plate (32), the two wind collecting plates (32) being arranged on the left and right sides of the mounting plate (31), respectively, the two wind collecting plates (32) being inclined forward and extending outward relative to the mounting plate (31). The length of the mounting plate (31) is greater than that of the baffle plate (2), and the length of the projection of the wind collecting plate (32) in the front-to-back direction is greater than the distance between the baffle plate (2) and the mounting plate (31) in the front-to-back direction.

2. The sweeping robot according to claim 1, characterized in that: The distance (L) between the bottom end of the baffle (2) and the rear adsorption device (3) in the front-to-rear direction is set within a second preset range.

3. The sweeping robot according to claim 1, characterized in that: The lower portion (21) of the baffle (2) is arranged in an arc shape that is inclined backward from top to bottom.

4. The sweeping robot according to claim 1, characterized in that: The baffle (2) is a flat plate structure.

5. The sweeping robot according to any one of claims 1 to 4, characterized in that: The baffle (2) and the rear adsorption device (3) are made of soft materials.

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