A square trajectory guide assembly for a floor cleaning robot

Abstract

A square trajectory guide assembly for a floor cleaning robot belongs to the technical field of intelligent household appliances. It comprises a driving motor, a connecting transmission plate connected to the bottom of the transmission shaft of the driving motor, a slider in the shape of a Luro triangle and installed below the connecting transmission plate, an inner guide frame in the shape of a square frame structure, the slider being slidingly fitted and installed in the inner guide frame, a square cloth fixed to the bottom of the inner guide frame, a middle guide frame sleeved on the inner guide frame, the inner guide frame being slidingly fitted and installed in the middle guide frame, and an outer fixed frame in the shape of a square frame structure and sleeved on the middle guide frame, the middle guide frame being slidingly fitted and installed in the outer fixed frame. The advantages are that the inner guide frame and the square cloth perform cleaning work in a square trajectory, thus improving the cleaning efficiency and effect of the floor cleaning robot, meeting the cleaning needs of the room interior wall edges and corners, and improving the user experience.

Description

Technical Field

[0001] This invention belongs to the field of smart home appliance technology, specifically relating to a square trajectory guidance component for a robotic vacuum cleaner. Background Technology

[0002] With the advancement of technology and the continuous improvement of people's living standards, smart home appliances have begun to enter thousands of households, becoming a new favorite in people's daily lives due to their convenience and flexible operation. The aforementioned robotic vacuum cleaner, also known as an automatic cleaning machine, intelligent vacuum cleaner, or robot vacuum cleaner, is a type of smart home appliance that uses artificial intelligence to automatically clean floors in a room. Current robotic vacuum cleaners are cordless and generally disc-shaped. During the cleaning process, the side brushes or cloths of the robotic vacuum cleaner sweep the floor and sweep dust into its dust collection bin at the suction port, thus completing the floor cleaning function. However, most existing robotic vacuum cleaners have a disc-shaped structure, with circular side brushes and mops, and their rotation trajectory is also circular. During operation, the side brushes or mops move along circular paths, and the cleaning coverage area of ​​the robotic vacuum cleaner is the superposition of multiple circles. Therefore, gaps exist at the edges of the cleaning coverage area, i.e., where two adjacent circles meet, resulting in compromised overall cleaning efficiency and effectiveness. More importantly, when cleaning dust in corners and along walls, dead corners are created, preventing the floor from being thoroughly cleaned. Consequently, when cleaning corners or along walls, accumulated dirt is not cleaned properly, and some debris is swept into the corners, requiring secondary cleaning, causing inconvenience and a poor user experience. In addition, some improved existing cleaning devices have mopping brushes that can clean corners, but their cleaning trajectory on the floor is not strictly square, also resulting in incomplete corner cleaning.

[0003] In view of the above-mentioned existing technology, the applicant has made beneficial designs to the guiding components of the robot vacuum cleaner to solve the problems of poor cleaning efficiency and inability to efficiently clean areas such as walls and corners. The technical solution to be introduced below is produced in this context. Summary of the Invention

[0004] The purpose of this invention is to provide a simple and reliable square trajectory guiding component for a robotic vacuum cleaner. By improving the structure and using a Reuleaux triangle-shaped slider, it is possible to achieve square trajectory movement, thereby effectively improving cleaning efficiency and cleaning effect. It is beneficial for efficient cleaning of the bottom edges and corners of room walls, thus not only improving the cleaning effect but also enhancing the user experience.

[0005] The present invention achieves its objective by providing a square trajectory guiding component for a robotic vacuum cleaner, comprising: a drive motor; a connecting transmission plate connected to the bottom of the drive motor's drive shaft; a slider having a Reuleaux triangle shape and mounted below the connecting transmission plate, the slider being capable of reciprocating rotation under the drive of the connecting transmission plate; an inner guide frame having a square frame structure, the slider being slidably mounted within the inner guide frame and capable of rotating therewith; and a square cloth connected to the bottom of the inner guide frame, the shape and size of the square cloth corresponding to the shape of the inner guide frame. The square cloth is shaped and sized accordingly and is used for cleaning floors; a middle guide frame is fitted onto the inner guide frame, and the inner guide frame is slidably installed within the middle guide frame and can reciprocate within the middle guide frame; an outer fixed frame is a square frame structure fitted onto the middle guide frame, and the middle guide frame is slidably installed within the outer fixed frame and can reciprocate within the middle guide frame; during the rotation of the slider, the slider can drive the inner guide frame and the middle guide frame to reciprocate within the outer fixed frame, so that the inner guide frame and the square cloth move along a square path.

[0006] In a specific embodiment of the present invention, an inner guide frame track groove is formed on the inner peripheral side surface of the inner guide frame, and the three top corners of the slider are disposed in the inner guide frame track groove and form a rotating pair with the inner guide frame. The three top corners of the slider can slide back and forth in the inner guide frame track groove while driving the inner guide frame to move.

[0007] In another specific embodiment of the present invention, the middle guide frame has a rectangular frame structure, and a middle guide frame track groove is provided on the inner side wall of the two side frame plates parallel to the length direction of the middle guide frame. Correspondingly, inner guide frame sliding strips are formed on the outer side wall of the corresponding side frame plates on both sides of the inner guide frame. The shape of the inner guide frame sliding strip is adapted to the shape of the middle guide frame track groove and is slidably installed in the middle guide frame track groove, so that the inner guide frame can slide back and forth in the middle guide frame.

[0008] In another specific embodiment of the present invention, a sliding strip of the middle guide frame is protruded on the outer side wall of the two side frame plates parallel to the width direction of the middle guide frame, and an outer fixed frame track groove is formed on the inner side wall of the two opposite side frame plates of the outer fixed frame. The shape of the outer fixed frame track groove is adapted to the shape of the middle guide frame sliding strip, and the two middle guide frame sliding strips are slidably installed in their respective corresponding outer fixed frame track grooves, so that the middle guide frame can slide back and forth in the outer fixed frame.

[0009] In another specific embodiment of the present invention, the bottom coverage area of ​​the middle guide frame is twice the bottom coverage area of ​​the inner guide frame.

[0010] In another specific embodiment of the present invention, the bottom coverage area of ​​the outer fixing frame is twice the bottom coverage area of ​​the middle guide frame, and the bottom coverage area of ​​the outer fixing frame is four times the bottom coverage area of ​​the inner guide frame, and the square-shaped inner guide frame is one-quarter the size of the square-shaped outer fixing frame.

[0011] In a further specific embodiment of the present invention, a slider linkage rod is also provided on the connecting transmission plate, and the slider linkage rod extends downward from the body of the connecting transmission plate. A slider connection hole penetrating the thickness direction is opened on the slider, and the slider linkage rod is installed in the slider connection hole to realize the positioning connection between the connecting transmission plate and the slider.

[0012] In a further specific embodiment of the present invention, the slider linkage rod is eccentrically arranged relative to the central axis of the connecting transmission plate, and the slider linkage rod is inserted at the center position of the slider.

[0013] In a further specific embodiment of the present invention, the drive motor is a linear motor.

[0014] The present invention, employing the aforementioned structure, possesses the following beneficial effects: First, this square trajectory guide component can be installed below the sweeping robot and used as a mopping motion component. Due to the use of a Reuleaux triangle-shaped slider, the inner guide frame and the middle guide frame reciprocate within the outer fixed frame, causing the inner guide frame and the square mop to move along a square path. Furthermore, during a single operation, the area covered by the movement trajectory of the inner guide frame and the square mop is equal to the square area of ​​the outer fixed frame. Compared to existing circular mopping components in sweeping robots, which can only follow a circular cleaning path, this technical solution achieves a strictly square linear motion trajectory, thus filling the gaps in the cleaning path compared to circular mopping components. By filling the gaps at the edges of its running trajectory, it increases the mopping area within the same working time, or in other words, improves the cleaning efficiency of the same cleaning area, effectively enhancing the cleaning efficiency and effect of the robot vacuum cleaner, which has significant promotional value. Secondly, because it can achieve a square movement trajectory of the inner guide frame and the square mop, after placing the robot vacuum cleaner close to the wall using its own positioning device, the directional mop in the square trajectory guide component can efficiently clean the edges and corners of the wall through the robot vacuum cleaner's own movement track control, improving the cleaning effect and enhancing the user experience of the robot vacuum cleaner, greatly expanding the application scenarios of the robot vacuum cleaner. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of an embodiment of the present invention; Figure 2 for Figure 1 Exploded view of the three-dimensional structure of the embodiment; Figure 3 for Figure 1 A top view of the structure after removing the drive motor and the connecting transmission plate.

[0016] In the diagram: 1. Drive motor; 2. Connecting transmission plate; 21. Slider linkage rod; 3. Slider; 31. Slider connecting hole; 4. Inner guide frame; 41. Inner guide frame track groove; 42. Inner guide frame sliding bar; 5. Square cloth; 6. Middle guide frame; 61. Middle guide frame track groove; 62. Middle guide frame sliding bar; 7. Outer fixed frame; 71. Outer fixed frame track groove. Detailed Implementation

[0017] The specific embodiments of the present invention are described in detail below with reference to the accompanying drawings. However, the description of the embodiments is not a limitation on the technical solution. Any formal but not substantive changes made based on the concept of the present invention should be considered within the scope of protection of the present invention.

[0018] In the following description, all directional (or orientational) concepts involving up, down, left, right, front, and back refer to the position of the figure being described, and are intended to facilitate public understanding. Therefore, they should not be construed as a special limitation on the technical solution provided by this invention.

[0019] Please see Figures 1 to 3 This invention relates to a square trajectory guiding assembly for a robotic vacuum cleaner, comprising: a drive motor 1, which is fixedly installed inside the housing of the robotic vacuum cleaner and electrically connected to a control module inside the robotic vacuum cleaner; a connecting transmission plate 2, which is mounted at the bottom of the drive shaft of the aforementioned drive motor 1, the connecting transmission plate 2 having a circular plate shape and capable of rotating under the drive of the aforementioned drive shaft of the aforementioned drive motor 1; and a slider 3, which has a Reuleaux triangle shape and is mounted at the bottom end of the aforementioned connecting transmission plate 2, and the slider 3... It can reciprocate under the drive of the connecting transmission plate 2; an inner guide frame 4, which is a square frame structure, in which the aforementioned slider 3 is slidably installed and can rotate, and the slider 3 can drive the inner guide frame 4 to reciprocate; a square wiping cloth 5, which is connected to the bottom of the aforementioned inner guide frame 4, and the shape and size of the square wiping cloth 5 are adapted to the shape and size of the inner guide frame 4, and the square wiping cloth 5 is used to clean the floor and wipe water stains and other contaminants; a middle guide frame 6, which is fitted onto the aforementioned inner guide frame. 4. The aforementioned inner guide frame 4 is slidably installed in the middle guide frame 6 and can reciprocate within the middle guide frame 6; an outer fixed frame 7, which is a square frame structure and is fitted onto the aforementioned middle guide frame 6, and the aforementioned middle guide frame 6 is slidably installed in the outer fixed frame 7 and can reciprocate within the middle guide frame 6; during the rotation of the aforementioned slider 3, the slider 3 can drive the inner guide frame 4 and the middle guide frame 6 to reciprocate within the aforementioned outer fixed frame 7, and cause the inner guide frame 4 and the square cloth 5 to move along a square path; Based on the aforementioned connecting transmission plate 2, the Reuleaux triangle-shaped slider 3 rotates continuously and drives the inner guide frame 4 to move. According to the principle that the Reuleaux triangle can form a square outline through rotation, the inner guide frame 4 moves in the outer fixed frame 7 with a square trajectory under the guidance of the middle guide frame 6, and finally achieves the cleaning work of square trajectory. In actual use, by setting different sizes of slider 3, inner guide frame 4, middle guide frame 6 and outer fixed frame 7, and adjusting the interval and position between them, different ground cleaning work needs can be achieved.

[0020] The following is a brief explanation of the characteristics and working principle of the Reuleaux triangle: The Reuleaux triangle, generally referring to the Rullos triangle, was first discovered and named after Franz Reuleaux (1829-1905), a famous German mechanical engineer and kinematician. The Reuleaux triangle is a curved triangle formed by three arcs, each centered at a vertex of an equilateral triangle and having a radius equal to its side length. Because the Reuleaux triangle is a curve of fixed width, it can move between parallel lines of fixed width. If another set of parallel lines with the same spacing is set perpendicular to this set of parallel lines, the Reuleaux triangle can move within the square enclosed by the two sets of parallel lines. Based on this principle, a slider 3 based on the shape of the Reuleaux triangle can drive the inner guide frame 4 to move along a square trajectory.

[0021] Please pay close attention. Figure 2 An inner guide frame track groove 41 is provided on the inner peripheral side surface of the aforementioned inner guide frame 4, which is arranged circumferentially. The inner guide frame track groove 41 is formed as a closed annular guide groove. The three top corners of the aforementioned slider 3 are arranged in the inner guide frame track groove 41 and form a rotating pair with the aforementioned inner guide frame 4. The three top corners of the slider 3 can slide back and forth in the inner guide frame track groove 41 while driving the inner guide frame 4 to move.

[0022] Furthermore, the aforementioned guide frame 6 has a rectangular frame structure, and as shown... Figure 3 As shown, the middle guide frame 6 is arranged horizontally, and middle guide frame track grooves 61 are provided on the inner side walls of the front and rear side frame plates of the middle guide frame 6. Correspondingly, inner guide frame sliding strips 42 are formed on the outer side walls of the corresponding side plates of the inner guide frame 4. The shape of the inner guide frame sliding strips 42 is adapted to the shape of the middle guide frame track grooves 61 and is slidably installed in the middle guide frame track grooves 61, so that the inner guide frame 4 can slide back and forth in the middle guide frame 6.

[0023] In this embodiment, a middle guide frame sliding strip 62 is protruding on the outer side wall of the left and right side frame plates of the aforementioned middle guide frame 6, and an outer fixed frame track groove 71 is provided on the inner side wall of the two opposite frame plates of the aforementioned outer fixed frame 7. The shape of the aforementioned outer fixed frame track groove 71 is adapted to the shape of the middle guide frame sliding strip 62, and the two aforementioned middle guide frame sliding strips 62 are slidably installed in their respective corresponding outer fixed frame track grooves 71, so that the middle guide frame 6 can slide back and forth in the outer fixed frame 7.

[0024] Please see Figure 2 And please combine Figure 3The bottom coverage area of ​​the aforementioned middle guide frame 6 is twice the bottom coverage area of ​​the aforementioned inner guide frame 4; that is, if the two aforementioned inner guide frames 4 are spliced ​​together, they can be combined to form a middle guide frame 6.

[0025] Furthermore, the bottom coverage area of ​​the aforementioned outer fixing frame 7 is twice the bottom coverage area of ​​the aforementioned middle guide frame 6; and the bottom coverage area of ​​the outer fixing frame 7 is four times the bottom coverage area of ​​the aforementioned inner guide frame 4.

[0026] In this embodiment, a slider linkage rod 21 is also provided on the aforementioned connecting transmission plate 2, and the slider linkage rod 21 extends downward from the body of the connecting transmission plate 2. A slider connecting hole 31 penetrating the thickness direction is provided on the aforementioned slider 3, and the aforementioned slider linkage rod 21 is fitted into the slider connecting hole 31, thereby realizing the positioning connection between the connecting transmission plate 2 and the slider 3; Figure 3 As shown, the slider linkage rod 21 is eccentrically positioned relative to the central axis of the aforementioned connecting transmission plate 2, and the slider linkage rod 21 is inserted into the center position of the slider 3. Of course, the installation position of the slider linkage rod 21 can be adjusted according to actual usage requirements. At the same time, it is understood that in other embodiments, the connecting transmission plate 2 and the slider 3 can also be fixedly connected by fasteners such as rivets and bolts, which are all within the protection scope of this invention and will not be elaborated further here.

[0027] Preferably, the aforementioned drive motor 1 is a linear motor; since linear motors have good response and can accurately control the precision of linear motor operation, while achieving the control function, they have better response, more precise control, and longer lifespan, thereby ensuring that the slider 3 drives the inner guide frame 4 to achieve square trajectory movement, effectively improving the cleaning efficiency of the sweeping robot.

[0028] Please see Figure 1 and Figure 2 And focus on combining Figure 3 The applicant briefly describes the working principle of the technical solution provided by this invention: as follows Figure 3As shown, the aforementioned middle guide frame 6 is positioned below the aforementioned outer fixed frame 7, while the aforementioned inner guide frame 4 is positioned on the right side inside the aforementioned middle guide frame 6, corresponding to the lower right corner of the aforementioned outer fixed frame 7. The square trajectory guide assembly of this invention is installed at the bottom of the sweeping robot. When cleaning is required, the sweeping robot is started, and the drive motor 1 begins to work under the control of the control module. The power output shaft of the drive motor 1 drives the connecting transmission plate 2 to rotate, and the connecting transmission plate 2 further drives the slider 3 to perform eccentric motion, causing the Reuleaux triangle-shaped slider 3 to continuously rotate and drive the inner guide frame 4 to move. Based on the principle that the Reuleaux triangle can form a square outline through rotation, the inner guide frame 4 moves left and right in the middle guide frame 6, which in turn drives the middle guide frame 6 to move up and down in the outer fixed frame 7. This allows the inner guide frame 4 to move along a square trajectory in the outer fixed frame 7, ultimately completing the cleaning work of the square mop 5. After one work cycle, the coverage area of ​​the inner guide frame 1's movement trajectory is equal to the square area of ​​the outer fixed frame 7. This greatly increases the cleaning range of the robot vacuum cleaner and allows it to work parallel to the wall, as well as clean the edges and corners of the room. The cleaning efficiency and cleaning effect of the robot vacuum cleaner are greatly improved.

[0029] It should be noted that the above embodiments can be freely combined as needed. The above are merely preferred embodiments of the present invention. It should be pointed out that for those skilled in the art, several improvements and modifications can be made without departing from the principle of the present invention, and these improvements and modifications should also be considered within the scope of protection of the present invention.

[0030] In summary, the technical solution provided by this invention makes up for the shortcomings of the prior art, successfully completes the invention task, and accurately realizes the technical effects described by the applicant in the above technical effects column.

Claims

1. A square trajectory guiding component for a robotic vacuum cleaner, characterized in that, include: A drive motor (1); a connecting transmission plate (2) connected to the bottom of the drive shaft of the drive motor (1); A slider (3), the slider (3) is in the shape of a Reuleaux triangle and is installed below the connecting transmission plate (2). The slider (3) can reciprocate under the drive of the connecting transmission plate (2); an inner guide frame (4), the inner guide frame (4) is in the shape of a square frame. The slider (3) is slidably installed in the inner guide frame (4) and can rotate within it; a square rag (5), the square rag (5) is connected to the bottom of the inner guide frame (4), and the shape and size of the square rag (5) are adapted to the shape and size of the inner guide frame (4). The square rag (5) is used to clean the floor; a middle guide frame (6), the middle guide frame (6) is fitted The inner guide frame (4) is slidably installed in the middle guide frame (6) and can reciprocate within the middle guide frame (6); an outer fixed frame (7) is a square frame structure and is fitted onto the middle guide frame (6), and the middle guide frame (6) is slidably installed in the outer fixed frame (7) and can reciprocate within the middle guide frame (6); during the rotation of the slider (3), the slider (3) can drive the inner guide frame (4) and the middle guide frame (6) to reciprocate within the outer fixed frame (7), and cause the inner guide frame (4) and the square cloth (5) to move along a square path.

2. The square trajectory guiding component for a sweeping robot according to claim 1, characterized in that: An inner guide frame track groove (41) is provided on the inner peripheral side surface of the inner guide frame (4) and is arranged along its circumference. The three top corners of the slider (3) are arranged in the inner guide frame track groove (41) and form a rotating pair with the inner guide frame (4). The three top corners of the slider (3) can slide back and forth in the inner guide frame track groove (41) and drive the inner guide frame (4) to move.

3. A square trajectory guiding component for a sweeping robot according to claim 1, characterized in that: The middle guide frame (6) has a rectangular frame structure, and the inner sidewalls of the two side frame plates parallel to the length direction of the middle guide frame (6) are provided with middle guide frame track grooves (61). Correspondingly, inner guide frame sliding strips (42) are protruded on the outer sidewalls of the corresponding side frame plates on both sides of the inner guide frame (4). The shape of the inner guide frame sliding strips (42) is adapted to the shape of the middle guide frame track grooves (61) and is slidably installed in the middle guide frame track grooves (61), so that the inner guide frame (4) can slide back and forth in the middle guide frame (6).

4. A square trajectory guiding component for a sweeping robot according to claim 3, characterized in that: On the outer side walls of the two side frame plates parallel to the width direction of the middle guide frame (6), a middle guide frame sliding strip (62) is formed. On the inner side walls of the two opposite side frame plates of the outer fixed frame (7), an outer fixed frame track groove (71) is formed. The shape of the outer fixed frame track groove (71) is adapted to the shape of the middle guide frame sliding strip (62). The two middle guide frame sliding strips (62) are slidably installed in their respective corresponding outer fixed frame track grooves (71), so that the middle guide frame (6) can slide back and forth in the outer fixed frame (7).

5. A square trajectory guiding component for a sweeping robot according to claim 1, characterized in that: The bottom coverage area of ​​the middle guide frame (6) is twice the bottom coverage area of ​​the inner guide frame (4).

6. A square trajectory guiding component for a sweeping robot according to claim 5, characterized in that: The bottom coverage area of ​​the outer fixed frame (7) is twice that of the bottom coverage area of ​​the middle guide frame (6), and the bottom coverage area of ​​the outer fixed frame (7) is four times that of the bottom coverage area of ​​the inner guide frame (4).

7. A square trajectory guiding component for a sweeping robot according to claim 1, characterized in that: A slider linkage rod (21) is also provided on the connecting transmission plate (2), and the slider linkage rod (21) extends downward from the body of the connecting transmission plate (2). A slider connection hole (31) penetrating its thickness direction is opened on the slider (3). The slider linkage rod (21) is installed in the slider connection hole (31) to realize the positioning connection between the connecting transmission plate (2) and the slider (3).

8. A square trajectory guiding component for a sweeping robot according to claim 7, characterized in that: The slider linkage rod (21) is eccentrically positioned relative to the central axis of the connecting transmission plate (2), and the slider linkage rod (21) is inserted into the center position of the slider (3).

9. A square trajectory guiding component for a sweeping robot according to claim 1, characterized in that: The drive motor (1) is a linear motor.

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