Air duct adjusting mechanism of a sweeper

Abstract

The application relates to the field of floor sweeping machines, in particular to a wind channel adjusting mechanism of a floor sweeping machine. The wind channel adjusting mechanism is arranged in a wind channel adjusting space of a wind channel of the floor sweeping machine, and two ends of the wind channel adjusting space are respectively connected with a first ventilation section and a second ventilation section of the wind channel of the floor sweeping machine. The wind channel adjusting mechanism comprises a first valve plate. When the first valve plate is rotated to a first angle, the first valve plate covers and is tangent to a first interface between the wind channel adjusting space and the first ventilation section. When the first valve plate is rotated to a second angle, the first valve plate covers and is tangent to a second interface between the wind channel adjusting space and the second ventilation section. By rotating the first valve plate to partially cover or completely cover the first interface or the second interface, the ventilation area of the wind channel adjusting space is realized, so that the wind power from the first ventilation section to the second ventilation section is changed.

Description

Technical Field

[0001] This application relates to the field of sweeping machines, and in particular to an air duct adjustment mechanism for a sweeping machine. Background Technology

[0002] Robotic vacuum cleaners are a type of smart home appliance that can automatically clean floors in a room using a certain level of artificial intelligence. As robotic vacuum cleaners become more and more popular, users have higher and higher requirements for intelligent and deep cleaning effects. This requires greater suction power from floor scrubbers and the like. Adjusting the air duct structure during each sweeping and / or suction process can change the airflow. How to ensure minimal airflow loss and good cleaning effect during the adjustment process has become an urgent problem to be solved. Utility Model Content

[0003] In view of the aforementioned problems, this application is made to provide a duct adjustment mechanism for a sweeper that overcomes or at least partially solves the problems. The mechanism is disposed within a duct adjustment space of the sweeper's duct, the two ends of which are respectively connected to a first ventilation section and a second ventilation section of the sweeper's duct. The duct adjustment mechanism includes a first valve plate rotatably disposed within the duct adjustment space. When the first valve plate is rotated to a first angle, it covers and is tangent to a first interface between the duct adjustment space and the first ventilation section; or when it is rotated to a second angle, it covers and is tangent to a second interface between the duct adjustment space and the second ventilation section.

[0004] Preferably, the outer periphery of the first valve plate is provided with a first flexible rubber coating portion, which is in interference fit with the inner wall of the air duct adjustment space when the first valve plate rotates.

[0005] Preferably, the air duct adjustment mechanism further includes a first connecting plate and a shaft; one side center of the first connecting plate is connected to one end of the shaft, and the other side edge is perpendicularly connected to the first valve plate; the other end of the shaft extends to the outside of the air duct adjustment space.

[0006] Preferably, the air duct adjustment mechanism further includes a second valve plate; the second valve plate and the first valve plate are arranged in a circular array on the same side of the first connecting plate; when the first valve plate covers and is tangent to the first interface or the second interface, the second valve plate simultaneously covers and is tangent to the second interface or the first interface.

[0007] Preferably, the air duct adjustment mechanism further includes a second connecting plate corresponding to the first connecting plate, and one side of the second connecting plate is connected to the first valve plate and the second valve plate respectively.

[0008] Preferably, the side of the air duct adjustment space is provided with an arc-shaped limiting groove that extends through the outside, and the other side of the second connecting plate is provided with a limiting rod that extends out of the arc-shaped limiting groove.

[0009] Preferably, the air duct adjustment mechanism further includes a drive motor; the drive motor is connected to one end of the shaft in a transmission connection.

[0010] Preferably, the air duct adjustment mechanism further includes a micro switch, which is disposed at both ends of the arc-shaped limiting groove so as to contact the limiting rod when it reciprocates to the end. The micro switch is electrically connected to the drive motor.

[0011] Preferably, the inner wall of the air duct adjustment space, the sidewalls of the first valve plate and the second valve plate that abut against the inner wall of the air duct adjustment space are all curved surfaces.

[0012] Preferably, the outer periphery of the second valve plate is provided with a second flexible rubber coating portion, which is interference-fitted with the inner wall of the air duct adjustment space when the second valve plate rotates.

[0013] This application has the following advantages:

[0014] In the embodiments of this application, an air duct adjustment mechanism is provided within the air duct adjustment space of the sweeper's air duct. The two ends of the air duct adjustment space are respectively connected to the first ventilation section and the second ventilation section of the sweeper's air duct. The air duct adjustment mechanism includes a first valve plate rotatably disposed inside the air duct adjustment space. When the first valve plate rotates to a first angle, it covers and is tangent to the first interface between the air duct adjustment space and the first ventilation section, or when it rotates to a second angle, it covers and is tangent to the second interface between the air duct adjustment space and the second ventilation section. By rotating the first valve plate to partially or completely cover the first interface or the second interface, the ventilation area of ​​the air duct adjustment space is increased, thereby changing the wind force from the first ventilation section to the second ventilation section. Since the first valve plate is tangent to the first interface or the second interface when it rotates, and the first valve plate is in contact with at least one edge of the first interface or at least one edge of the second interface, the contact point between the first valve plate and the first interface or the second interface is sealed, ensuring the uniqueness of the air intake channel and avoiding wind force dispersion or even loss. Attached Figure Description

[0015] To more clearly illustrate the technical solution of this application, the drawings used in the description of this application will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0016] Figure 1 This is a schematic diagram of the internal structure of the air duct adjustment mechanism of a sweeping machine when it is open, according to an embodiment of this application.

[0017] Figure 2 This is a schematic diagram of the external structure of the air duct adjustment mechanism of a sweeping machine when it is open, according to an embodiment of this application.

[0018] Figure 3 This is a schematic diagram of the internal structure of the air duct adjustment mechanism of a sweeping machine when it is closed, according to an embodiment of this application.

[0019] Figure 4 This is a schematic diagram of the external structure of the air duct adjustment mechanism of a sweeping machine when it is closed, according to an embodiment of this application.

[0020] The reference numerals in the accompanying drawings are as follows:

[0021] 10. Air duct adjustment space; 11. First ventilation section; 12. Second ventilation section; 20. First valve plate; 21. Second valve plate; 22. First connecting plate; 23. Arc-shaped limiting groove; 24. Limiting rod; 25. Micro switch; 26. Drive motor; 27. Rubber coating part. Detailed Implementation

[0022] To make the objectives, features, and advantages of this application more apparent and understandable, the application will be further described in detail below with reference to the accompanying drawings and specific embodiments. Obviously, the described embodiments are only some, not all, of the embodiments of this application. All other embodiments obtained by those skilled in the art based on the embodiments of this application without inventive effort are within the scope of protection of this application.

[0023] Reference Figure 1-4 .

[0024] In this embodiment, the airflow direction, whether from the first ventilation section 11 to the second ventilation section 12 or from the second ventilation section 12 to the first ventilation section 11, must pass through the air duct adjustment space 10. Taking the airflow direction from the first ventilation section 11 to the second ventilation section 12 as an example, the first ventilation section 11 is close to the sweeping unit and / or washing unit of the sweeper. The sweeping unit and washing unit in the sweeper can be compactly arranged in one first ventilation section 11, or they can be separated in front of and behind the sweeper's travel direction. When separated, two corresponding air duct adjustment mechanisms need to be adapted, and the two second ventilation sections 12 are connected to the same air supply assembly.

[0025] A duct adjustment mechanism for a sweeper is provided, which is disposed within a duct adjustment space 10 of the sweeper's duct. The two ends of the duct adjustment space 10 are respectively connected to a first ventilation section 11 and a second ventilation section 12 of the sweeper's duct. The duct adjustment mechanism includes a first valve plate 20 rotatably disposed inside the duct adjustment space 10. When the first valve plate 20 is rotated to a first angle, it covers and is tangent to a first interface between the duct adjustment space 10 and the first ventilation section 11, or when it is rotated to a second angle, it covers and is tangent to a second interface between the duct adjustment space 10 and the second ventilation section 12.

[0026] It should be noted that the coverage mentioned above includes partial coverage or complete coverage.

[0027] In this embodiment, an air duct adjustment mechanism is installed within the air duct adjustment space 10 of the sweeper's air duct. The two ends of the air duct adjustment space 10 are respectively connected to the first ventilation section 11 and the second ventilation section 12 of the sweeper's air duct. The air duct adjustment mechanism includes a first valve plate 20 rotatably disposed inside the air duct adjustment space 10. When the first valve plate 20 rotates to a first angle, it covers and is tangent to the first interface between the air duct adjustment space 10 and the first ventilation section 11; or when it rotates to a second angle, it covers and is tangent to the air duct adjustment space 10 and the second ventilation section 12. The second interface between the two; by rotating the first valve plate 20 to partially or completely cover the first interface or the second interface, the ventilation area of ​​the air duct adjustment space 10 is realized, thereby changing the wind force from the first ventilation section 11 to the second ventilation section 12; since the first valve plate 20 is tangent to the first interface or the second interface when it rotates, the first valve plate 20 is in contact with at least one edge of the first interface or at least one edge of the second interface, so that the contact point between the first valve plate 20 and the first interface or the second interface is sealed, ensuring the uniqueness of the air intake channel and avoiding wind force dispersion or even loss.

[0028] It should be noted that the first angle and the second angle mentioned above may be equal or unequal.

[0029] It should be noted that the air duct adjustment space 10 is located within the sweeper's air duct and is used to house the air duct adjustment mechanism. The airflow flows from the first ventilation section 11 through the air duct adjustment space 10, where the ventilation area is changed by the air force adjustment mechanism, before entering the second ventilation section 12, thus achieving the variation of airflow strength between the first ventilation section 11 and the second ventilation section 12. For sweepers, different suction power is required in different sweeping or washing scenarios. Through the aforementioned air duct adjustment mechanism, the suction power can be adjusted to the appropriate scenario without changing the constant airflow, thereby achieving multi-scenario application of the sweeper with a clever structure.

[0030] The following will further describe the air duct adjustment mechanism of a sweeping machine in various exemplary embodiments of this application.

[0031] In this embodiment of the application, the air duct adjustment mechanism further includes a shaft (not shown in the figure), one end of which extends to the outside of the air duct adjustment space 10, and the other end is connected to one side of the first valve plate 20.

[0032] It should be noted that the rotation of the first valve plate 20 can be achieved, but is not limited to, via a connecting shaft.

[0033] As an example, the cross-sectional area of ​​the first valve plate 20 is greater than or equal to the area of ​​the first interface or the second interface. The cross-section of the first valve plate 20 is perpendicular to the wind direction in the duct. The rotation range of the first valve plate 20 is the outermost edge of the duct adjustment space 10. That is, the rotation path of the first valve plate 20 will pass through the first interface or the second interface, thus partially or completely covering the first ventilation section 11 or the second ventilation section 12.

[0034] Understandably, in the example above, the shaft drives the first valve plate 20 to rotate. When the first valve plate 20 rotates to a predetermined angle, the long side of the first valve plate 20 can partially or completely cover the first interface or the second interface.

[0035] The aforementioned first valve plate 20, when it flips, will divide the single air duct into two air ducts. Although it can still play the role of adjusting the wind force, it will inevitably cause a certain amount of wind force loss.

[0036] The air duct adjustment mechanism also includes a first connecting plate 22, one side center of which is connected to one end of the shaft, and the other side edge is perpendicularly connected to the first valve plate 20.

[0037] It should be noted that in this embodiment, the first valve plate 20 is driven to deflect by the shaft and the first connecting plate 22. During the deflection process, the first valve plate 20 is tangential from one edge of the first interface or the second interface to the second edge. Compared with the previous embodiment, the solution in this embodiment does not form two air ducts at the first interface or the second interface, thereby reducing wind dispersion and loss.

[0038] In this embodiment, the air duct adjustment mechanism further includes a second valve plate 21; the second valve plate 21 and the first valve plate 20 are arranged in a circular array on the same side of the first connecting plate 22; when the first valve plate 20 covers and is tangent to the first interface or the second interface, the second valve plate 21 simultaneously covers and is tangent to the second interface or the first interface.

[0039] It should be noted that if the first valve plate 20 covers the first interface, the second valve plate 21 will simultaneously cover the second interface; a wind-guiding channel connecting the first ventilation section 11 and the second ventilation section 12 is formed between the first valve plate 20 and the second valve plate 21.

[0040] In this embodiment of the application, the air duct adjustment mechanism further includes a second connecting plate corresponding to the first connecting plate 22, and one side of the second connecting plate is connected to the first valve plate 20 and the second valve plate 21 respectively.

[0041] It should be noted that the first connecting plate 22, the first valve plate 20, the second connecting plate, and the second valve plate 21 are connected in sequence to form an integral enclosed structure, similar to a rotor. A wind-guiding channel is left in the middle.

[0042] The side of the air duct adjustment space 10 is provided with an arc-shaped limiting groove 23 that extends through the outside, and the second connecting plate is provided with a limiting rod 24 that extends out of the arc-shaped limiting groove 23.

[0043] Understandably, the rotation angle of the air duct adjustment mechanism is limited by the arc-shaped limiting groove 23 and the limiting rod 24, so that the first valve plate 20 can be in an open or closed state with respect to the first ventilation section 11 and the second valve plate 21 can be in a closed state with respect to the second ventilation section 12.

[0044] In this embodiment, the air duct adjustment mechanism further includes a drive motor 26; the drive motor 26 is connected to one end of the shaft in a transmission connection.

[0045] It should be noted that the rotation drive method of the air duct adjustment mechanism includes, but is not limited to, the drive motor 26. The forward and reverse rotation and speed of the drive motor 26 can be controlled by the controller in the sweeper.

[0046] In this embodiment, the drive motor 26 is a 12V geared motor, and the gearbox has an unloaded output speed of 25 RPM.

[0047] In this embodiment of the application, the air duct adjustment mechanism further includes a micro switch 25, which is disposed at both ends of the arc-shaped limiting groove 23 so as to contact the limiting rod 24 when it reciprocates to the end. The micro switch 25 is electrically connected to the drive motor 26.

[0048] Understandably, to further control the driving effect of the drive motor 26, two microswitches 25 are used to limit the driving stroke of the drive motor 26. For example, when the limit rod 24 touches one of the microswitches 25, it indicates that the drive motor 26 rotates forward, driving the first valve plate 20 to fully open the first ventilation section 11 and stop rotating. The first ventilation section 11 is connected to the second ventilation section 12 through the wind guide channel between the first valve plate 20 and the second valve plate 21. When the limit rod 24 touches the other microswitch 25, it indicates that the drive motor 26 rotates in reverse, driving the first valve plate 20 to fully cover the first ventilation section 11 and stop rotating. The second valve plate 21 fully covers the second ventilation section 12 and stops rotating. The space between the first ventilation section 11 and the second ventilation section 12 is closed.

[0049] With the wind power assembly providing constant wind force, the sweeping and mopping modules of the robot vacuum cleaner adjust their respective air duct adjustment mechanisms to meet the wind force requirements for sweeping or mopping.

[0050] In this embodiment, the inner wall of the air duct adjustment space 10, the sidewalls of the first valve plate 20 and the second valve plate 21 that abut against the inner wall of the air duct adjustment space 10 are all curved surfaces.

[0051] Understandably, setting the air duct adjustment space 10 to an arc surface can better accommodate and coordinate with the rotation process of the first valve plate 20 and the second valve plate 21. Furthermore, setting the side walls of the first valve plate 20 and the second valve plate 21 to an arc surface can better coordinate with the inner wall of the air duct adjustment space 10, facilitating rotation.

[0052] In this embodiment, when the first valve plate 20 and the second valve plate 21 rotate within the air duct adjustment space 10, there may be a small clearance between their respective outer peripheries and the inner wall of the air duct adjustment space 10. During sweeping or washing, this clearance will disperse the airflow direction, resulting in airflow loss. In this case, the outer periphery of the first valve plate 20 is provided with a first flexible adhesive portion 27 that interferes with the inner wall of the air duct adjustment space 10 when the first valve plate 21 rotates, and the outer periphery of the second valve plate 21 is provided with a second flexible adhesive portion (not shown) that interferes with the inner wall of the air duct adjustment space 10 when the second valve plate 21 rotates. The flexible adhesive portions serve to seal the clearance.

[0053] like Figure 1 or Figure 3 As shown, the four periphery of the first valve plate 20 and the second valve plate 21 are provided with flexible rubber-coated parts that are interference fit with the inner wall of the air duct adjustment space 10, so as to ensure that there is no gap between the first valve plate 20 and the second valve plate 21 and the inner wall of the air duct adjustment space 10 when they rotate, thereby avoiding wind power loss.

[0054] Although preferred embodiments of the present application have been described, those skilled in the art, upon learning the basic inventive concept, can make other changes and modifications to these embodiments. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments as well as all changes and modifications falling within the scope of the embodiments of the present application.

[0055] Finally, it should be noted that in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or terminal device that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or terminal device. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or terminal device that includes said element.

[0056] The above provides a detailed description of the air duct adjustment mechanism for a sweeping machine provided in this application. Specific examples have been used to illustrate the principle and implementation of this application. The description of the above embodiments is only for the purpose of helping to understand the method and core idea of ​​this application. At the same time, for those skilled in the art, there will be changes in the specific implementation and application scope based on the idea of ​​this application. Therefore, the content of this specification should not be construed as a limitation of this application.

Claims

1. A duct adjustment mechanism for a sweeper, characterized in that, The air duct adjustment space is set within the air duct of the sweeper, and the two ends of the air duct adjustment space are respectively connected to the first ventilation section and the second ventilation section of the sweeper air duct; the air duct adjustment mechanism includes a first valve plate rotatably disposed inside the air duct adjustment space, which covers and is tangent to the first interface between the air duct adjustment space and the first ventilation section when rotated to a first angle, or covers and is tangent to the second interface between the air duct adjustment space and the second ventilation section when rotated to a second angle.

2. The air duct adjustment mechanism of the sweeper according to claim 1, characterized in that, The outer periphery of the first valve plate is provided with a first flexible rubber coating part, which is interference-fitted with the inner wall of the air duct adjustment space when the first valve plate rotates.

3. The air duct adjustment mechanism of the sweeper according to claim 1, characterized in that, The air duct adjustment mechanism further includes a first connecting plate and a shaft; one side center of the first connecting plate is connected to one end of the shaft, and the other side edge is perpendicularly connected to the first valve plate; the other end of the shaft extends to the outside of the air duct adjustment space.

4. The air duct adjustment mechanism of the sweeper according to claim 3, characterized in that, The air duct adjustment mechanism also includes a second valve plate; the second valve plate and the first valve plate are arranged in a circular array on the same side of the first connecting plate; when the first valve plate covers and is tangent to the first interface or the second interface, the second valve plate simultaneously covers and is tangent to the second interface or the first interface.

5. The air duct adjustment mechanism of the sweeper according to claim 4, characterized in that, The air duct adjustment mechanism also includes a second connecting plate corresponding to the first connecting plate, and one side of the second connecting plate is connected to the first valve plate and the second valve plate respectively.

6. The air duct adjustment mechanism of the sweeper according to claim 5, characterized in that, The side of the air duct adjustment space is provided with an arc-shaped limiting groove that extends through the outside, and the other side of the second connecting plate is provided with a limiting rod that extends out of the arc-shaped limiting groove.

7. The air duct adjustment mechanism of the sweeper according to claim 6, characterized in that, The air duct adjustment mechanism also includes a drive motor; the drive motor is connected to one end of the shaft in a transmission connection.

8. The air duct adjustment mechanism of the sweeper according to claim 7, characterized in that, The air duct adjustment mechanism also includes a micro switch, which is located at both ends of the arc-shaped limiting groove so as to contact the limiting rod when it reciprocates to the end. The micro switch is electrically connected to the drive motor.

9. The air duct adjustment mechanism of the sweeper according to claim 4, characterized in that, The inner wall of the air duct adjustment space, the sidewalls of the first valve plate and the second valve plate that abut against the inner wall of the air duct adjustment space are all curved surfaces.

10. The air duct adjustment mechanism of the sweeper according to claim 4, characterized in that, The outer periphery of the second valve plate is provided with a second flexible rubber coating part, which is interference-fitted with the inner wall of the air duct adjustment space when the second valve plate rotates.

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