Dust pushing mechanism of a cleaning robot

Abstract

The utility model relates to the field of floor scrubbers and other cleaning machines, specifically a dust-pushing mechanism of a cleaning robot, comprising a mounting base, an electric push rod, an electric push rod connecting seat, a limiting connecting rod, a pulley mounting seat, a pulley, a column, a lever member, a tension spring, a tension spring mounting seat, a tension spring connecting plate, a steel wire rope, a dust-pushing cloth mounting plate, etc. The mounting base is mounted on the cleaning robot body, and the electric push rod connecting seat, the pulley mounting seat, the tension spring mounting seat and the column are respectively located on the lower side of the mounting base. Through the transmission part composed of the electric push rod, the limiting connecting rod, the lever member, the tension spring, the steel wire rope, etc., the overall structure of the dust-pushing mechanism can be made more compact, occupying less space and having higher transmission efficiency. In addition, due to the coordinated arrangement of the tension spring and the steel wire rope, the transmission part has better flexibility. The tension spring drives the lever member through the steel wire rope, and then the dust-pushing cloth mounting plate can apply pressure to the ground, which can ensure the fitting effect to the ground, and is easy to disassemble and assemble, and simple to maintain.

Description

Technical Field

[0001] The utility model relates to the field of cleaning robots and other cleaning machines, in particular to a dust pushing mechanism of a cleaning robot. Background Art

[0002] Currently, cleaning robots or floor scrubbers equipped with dust-pushing mechanisms are becoming more and more common. Among them, the liftable dust-pushing mechanisms are generally not flexible enough overall, the transmission part inside the dust-pushing mechanism occupies a large space and has a low transmission efficiency, which will make the overall structure of the cleaning robot or floor scrubber larger and affect the cleaning effect. In addition, the transmission part is not flexible enough and the adhesion effect to the ground is also poor. Utility Model Content

[0003] In view of the above problems, the purpose of the present utility model is to provide a dust pushing mechanism for a cleaning robot.

[0004] The purpose of this utility model is achieved through the following technical solutions:

[0005] A dust pushing mechanism of a cleaning robot comprises a mounting base, an electric push rod, an electric push rod connecting seat, a limit connecting rod, a pulley mounting seat, a pulley, a column, a lever member, a tension spring, a tension spring mounting seat, a tension spring connecting plate, a steel wire rope, and a dust pushing cloth mounting plate. The mounting base is mounted on a cleaning robot body, and the electric push rod connecting seat, the pulley mounting seat, the tension spring mounting seat, and the column are respectively fixed to the lower side of the mounting base;

[0006] The main body of the electric push rod is hinged to the electric push rod connecting seat, the push rod part of the electric push rod is connected to one end of the limit connecting rod, and the other end of the limit connecting rod is provided with a long hole;

[0007] The pulley is rotatably mounted on the pulley mounting seat, one end of the tension spring is connected to the tension spring mounting seat, the other end of the tension spring is connected to the tension spring connecting plate, and the tension spring connecting plate is also connected to one end of the wire rope, the other end of the wire rope is connected to one end of the lever member after passing around the pulley, and the other end of the lever member is provided with one end of a limiting bolt, and the other end of the limiting bolt extends into the long hole of the limiting connecting rod, the lower end of the column is hinged on the limiting connecting rod near the connection between the limiting connecting rod and the other end of the wire rope, and the end of the limiting connecting rod near the lever member is connected to the dust push cloth mounting plate through a dust push cloth mounting plate swing connection structure, and the bottom surface of the dust push cloth mounting plate is connected with a dust push cloth.

[0008] The axial center line of the limiting bolt is parallel to the horizontal plane, and the projection of the length direction of the mounting base plate in the horizontal plane, the projection of the length direction of the electric push rod in the horizontal plane, the projection of the length direction of the limiting connecting rod in the horizontal plane, the projection of the length direction of the lever member in the horizontal plane, the projection of the length direction of the tension spring in the horizontal plane, and the projection of the length direction of the dust push cloth mounting plate in the horizontal plane are all parallel or collinear with each other.

[0009] A limiting stopper sleeve is provided on the outer periphery of the limiting bolt located between the lever member and the limiting connecting rod.

[0010] A winding screw is provided on one end of the lever member, and the other end of the wire rope passes around the pulley and then around the winding screw and is locked with the wire rope itself through a wire lock to form an annular portion, and the annular portion is sleeved on the outer circumference of the winding screw, thereby realizing the connection between the other end of the wire rope and one end of the lever member.

[0011] The swing connection structure of the dust push cloth mounting plate includes an articulated seat A, an articulated seat B, an articulated shaft A, and an articulated shaft B. The articulated seat A is fixed to the top surface of the dust push cloth mounting plate. The upper end of the articulated seat A is articulated with the lower end of the articulated seat B through the articulated shaft A. The upper end of the articulated seat B is articulated with the lever member through the articulated shaft B.

[0012] The axial center line of the hinge axis A is parallel to the horizontal plane and parallel to the length direction of the dust pusher cloth mounting plate, and the axial center line of the hinge axis B is parallel to the horizontal plane and perpendicular to the length direction of the dust pusher cloth mounting plate.

[0013] The articulated shaft A adopts a steel ball pin with a pull ring at one end, and the articulated seat A is provided with an oil-free bushing rotatably connected to the outer peripheral surface of the articulated shaft A.

[0014] The articulated seat A is provided with a limit plate mounting seat, and the limit plate mounting seat is provided with a limit plate A for limiting the rotation angle of the articulated seat B.

[0015] A limit plate B and a limit plate C are respectively provided on the columns, and the limit plate B is located above the limit plate C; when the whole formed by the articulated seat A and the articulated seat B rises to the specified highest position, the limit plate B presses against the side of the articulated seat B, and the limit plate C presses against the side of the articulated seat A.

[0016] The bottom surface of the dust push cloth mounting plate is connected to the dust push cloth via a Velcro structure.

[0017] The front portion of the dust push cloth mounting plate is bent upward to form a warped edge portion.

[0018] The advantages and positive effects of the utility model are:

[0019] 1. The utility model uses a transmission part composed of an electric push rod, a limit connecting rod, a lever part, a tension spring, a steel wire rope, etc. to make the overall structure of the dust pushing mechanism more compact, occupy less space, and have higher transmission efficiency. In addition, the transmission part is more flexible due to the coordinated arrangement of the tension spring and the steel wire rope. The tension spring drives the lever part through the steel wire rope, so that the dust pushing cloth mounting plate can apply pressure to the ground, which can ensure the fit effect with the ground, is easy to disassemble and assemble, and simple to maintain.

[0020] 2. The utility model provides a swing connection structure for the dust push cloth mounting plate, so that the dust push cloth mounting plate can swing within a certain range, further ensuring the fit to the ground and facilitating the replacement of the dust push cloth.

[0021] 3. The front part of the dust pusher cloth mounting plate of the utility model is bent upward to form a warped edge part, which can increase the dust pusher height and can also be compatible with a ground with a certain slope to avoid jamming caused by the slope of the ground. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 This is a schematic diagram of the main structure of the electric push rod of the utility model when it is extended;

[0023] Figure 2 It is a side view structural schematic diagram of the electric push rod of the utility model when it is extended;

[0024] Figure 3 It is a schematic diagram of the main structure of the utility model when the other end of the steel wire rope is separated from one end of the lever member and the electric push rod is retracted.

[0025] In the figure: 1 is a mounting base plate, 2 is an electric push rod, 3 is an electric push rod connecting seat, 4 is a limiting connecting rod, 401 is a long hole, 5 is a pulley mounting seat, 6 is a pulley, 7 is a column, 8 is a lever member, 9 is a tension spring, 10 is a tension spring mounting seat, 11 is a tension spring connecting plate, 12 is a wire rope, 13 is a dust push cloth mounting plate, 14 is a limiting bolt, 15 is a limiting stop sleeve, 16 is a winding screw, 17 is a wire locker, 18 is an articulated seat A, 19 is an articulated seat B, 20 is an articulated shaft A, 21 is an articulated shaft B, 22 is a limiting plate mounting seat, 23 is a limiting plate B, and 24 is a limiting plate C. DETAILED DESCRIPTION

[0026] The following is combined with Figure 1-3 The utility model is further described in detail.

[0027] A dust pushing mechanism of a cleaning robot, such as Figure 1-3As shown, in this embodiment, the mounting base 1, the electric push rod 2, the electric push rod connecting seat 3, the limiting connecting rod 4, the pulley mounting seat 5, the pulley 6, the column 7, the lever member 8, the tension spring 9, the tension spring mounting seat 10, the tension spring connecting plate 11, the wire rope 12, and the dust push cloth mounting plate 13 are included. The mounting base 1 is mounted on the cleaning robot body, and the electric push rod connecting seat 3, the pulley mounting seat 5, the tension spring mounting seat 10 and the column 7 are respectively fixed to the lower side of the mounting base 1 by screws. In this embodiment, the mounting base 1 is fixed to the cleaning robot body by commonly used fasteners.

[0028] The main body of the electric push rod 2 is hinged to the electric push rod connecting seat 3, and the push rod part of the electric push rod 2 is connected to one end of the limit connecting rod 4 by a bolt, and the other end of the limit connecting rod 4 is provided with a long hole 401. In this embodiment, the electric push rod 2 is a commercial product, and its action is controlled by the control system in the cleaning robot body.

[0029] In this embodiment, two tension springs 9 are provided, and the two tension springs 9 are parallel to each other. The pulley 6 is rotatably mounted on the pulley mounting seat 5, and one end of the two tension springs 9 is respectively connected to the tension spring mounting seat 10, and the other ends of the two tension springs 9 are respectively connected to the tension spring connecting plate 11, and the tension spring connecting plate 11 is also connected to one end of the wire rope 12. In this embodiment, the connection method of the tension spring connecting plate 11 with the tension spring 9 and the wire rope 12 is the existing technology. The other end of the wire rope 12 is connected to one end of the lever member 8 after passing the pulley 6, and the other end of the lever member 8 is provided with one end of a limiting bolt 14, and the other end of the limiting bolt 14 extends into the long hole 401 of the limiting link 4. The lower end of the column 7 is hinged on the limiting link 4 near the connection between the limiting link 4 and the other end of the wire rope 12, and the end of the limiting link 4 near the lever member 8 is connected to the dust push cloth mounting plate 13 through the dust push cloth mounting plate swing connection structure, and the bottom surface of the dust push cloth mounting plate 13 is connected with a dust push cloth.

[0030] By controlling the push rod part of the electric push rod 2 to extend or retract, the other end of the lever member 8 can be driven to rotate relative to the column 7, so as to drive the dust push cloth mounting plate swing connection structure and the dust push cloth mounting plate 13 to move up and down. The limit bolt 14 can have a certain moving space in the long hole 401 to ensure that the push rod part of the electric push rod 2 has a floating margin when extending and retracting, thereby improving safety. The tension spring 9 generates a pulling force on one end of the lever member 8 through the steel wire rope 12, so that the dust push cloth mounting plate 13 connected to the other end of the lever member 8 exerts pressure on the ground, forming a flexible pressurized transmission structure, which can make the dust push cloth on the dust push cloth mounting plate 13 fully fit the ground, and is used in combination with the lifting transmission structure composed of the electric push rod 2, the electric push rod connecting seat 3, the limit connecting rod 4, the column 7, the lever member 8, etc., so that the overall structure is more compact.

[0031] Specifically, in this embodiment, the axial center line of the limiting bolt 14 is parallel to the horizontal plane, and the projection of the length direction of the mounting base plate 1 in the horizontal plane, the projection of the length direction of the electric push rod 2 in the horizontal plane, the projection of the length direction of the limiting connecting rod 4 in the horizontal plane, the projection of the length direction of the lever member 8 in the horizontal plane, the projection of the length direction of the tension spring 9 in the horizontal plane, and the projection of the length direction of the dust push cloth mounting plate 13 in the horizontal plane are all parallel or collinear with each other, which can further save installation space, especially save space perpendicular to the length direction of the dust push cloth mounting plate 13 (also the front and rear direction of the dust push cloth mounting plate 13), making the structure more compact.

[0032] Specifically, if Figure 2 As shown, in this embodiment, a limit stop sleeve 15 is provided on the periphery of the limit bolt 14 between the lever member 8 and the limit link 4 to prevent the lever member 8 from deviating in the direction of the limit link 4 and ensure that the two ends of the lever member 8 swing accurately and stably.

[0033] Specifically, in this embodiment, a winding screw 16 is provided on one end of the lever member 8, and the other end of the wire rope 12 passes around the pulley 6, then passes around the winding screw 16, and is locked with the wire rope 12 itself through the wire lock 17 to form an annular portion, and the annular portion is sleeved on the outer circumference of the winding screw 16, thereby realizing the connection between the other end of the wire rope 12 and one end of the lever member 8, and is easy to disassemble and assemble. In this embodiment, the wire lock 17 is a commercially available double-hole wire lock product.

[0034] Specifically, the swing connection structure of the dust push cloth mounting plate in this embodiment includes an articulated seat A18, an articulated seat B19, an articulated shaft A20, and an articulated shaft B21. The articulated seat A18 is fixed to the top surface of the dust push cloth mounting plate 13. The upper end of the articulated seat A18 is articulated with the lower end of the articulated seat B19 through the articulated shaft A20. The upper end of the articulated seat B19 is articulated with the lever member 8 through the articulated shaft B21. The axial center line of the articulated shaft A20 is parallel to the horizontal plane and parallel to the length direction of the dust push cloth mounting plate 13. The axial center line of the articulated shaft B21 is parallel to the horizontal plane and perpendicular to the length direction of the dust push cloth mounting plate 13. By setting the swing connection structure of the dust push cloth mounting plate, the dust push cloth mounting plate 13 can have a small degree of freedom to swing left and right and forward and backward relative to the lever member 8, so that it can better fit the ground and is more suitable for relatively complex ground.

[0035] Specifically, in this embodiment, the articulated shaft A20 adopts a commercially available steel ball pin with a pull ring on one end, which is easy to disassemble and assemble; the articulated seat A18 is provided with an oil-free bushing rotatably connected to the outer peripheral surface of the articulated shaft A20, which plays a role in reducing the noise when the articulated seat A18 swings around the articulated shaft A20.

[0036] Specifically, in this embodiment, a limit plate mounting seat 22 is installed on the articulated seat A18 by screws, and a limit plate A23 for limiting the rotation angle of the articulated seat B19 is installed on the limit plate mounting seat 22 by screws. When the lower end of the articulated seat B19 swings to the preset limit position, it abuts against the limit plate A23 to prevent the articulated seat A18 from swinging excessively relative to the articulated seat B19. In this embodiment, a limit plate B24 and a limit plate C25 are respectively provided on the column 7 by screws, and the limit plate B24 is located above the limit plate C25; when the whole formed by the articulated seat A18 and the articulated seat B19 rises to the specified highest position, the limit plate B24 abuts against the side of the articulated seat B19, and the limit plate C25 abuts against the side of the articulated seat A18, which can effectively prevent the axial center line of the whole articulated shaft B21 formed by the articulated seat A18 and the articulated seat B19 from swinging excessively to the left and right. In this embodiment, the swing range is limited to 1°-3° clockwise and counterclockwise. In this embodiment, the limit plate A 23, the limit plate B 24 and the limit plate C 25 are all made of nylon material, which has good wear resistance.

[0037] Specifically, in this embodiment, the bottom surface of the dust push cloth mounting plate 13 is connected to the dust push cloth through a Velcro structure, and the Velcro structure is set according to the prior art to facilitate the disassembly and cleaning of the dust push cloth. Figure 2 As shown, the front portion of the dust pusher cloth mounting plate 13 is bent upward to form a warped edge portion, and the angle between the warped edge portion and the horizontal plane can be 0-65°, which can increase the dust pusher height and be compatible with a ground with a certain slope to prevent jamming.

[0038] Working principle:

[0039] When a dust pushing operation is required, the push rod portion of the electric push rod 2 extends out, driving the other end of the lever member 8 to rotate downward relative to the column 7, so that the dust pushing cloth on the dust pushing cloth mounting plate 13 is in contact with the ground, and the tension spring 9 generates a pulling force on one end of the lever member 8 through the wire rope 12, so that the dust pushing cloth mounting plate 13 connected to the other end of the lever member 8 exerts pressure on the ground, so that the dust pushing cloth on the dust pushing cloth mounting plate 13 can fully fit the ground; when the dust pushing is completed and the dust pushing cloth mounting plate 13 needs to be raised, the push rod portion of the electric push rod 2 retracts, driving the dust pushing cloth mounting plate 13 to rise.

Claims

1. A dust pushing mechanism of a cleaning robot, characterized in that: The utility model comprises a mounting base (1), an electric push rod (2), an electric push rod connecting seat (3), a limiting connecting rod (4), a pulley mounting seat (5), a pulley (6), a column (7), a lever member (8), a tension spring (9), a tension spring mounting seat (10), a tension spring connecting plate (11), a steel wire rope (12), and a dust push cloth mounting plate (13); the mounting base (1) is mounted on the body of the cleaning robot; the electric push rod connecting seat (3), the pulley mounting seat (5), the tension spring mounting seat (10) and the column (7) are respectively fixed to the lower side of the mounting base (1); The main body of the electric push rod (2) is hinged to the electric push rod connecting seat (3), the push rod portion of the electric push rod (2) is connected to one end of the limit connecting rod (4), and the other end of the limit connecting rod (4) is provided with a long hole (401); The pulley (6) is rotatably mounted on the pulley mounting seat (5), one end of the tension spring (9) is connected to the tension spring mounting seat (10), the other end of the tension spring (9) is connected to the tension spring connecting plate (11), the tension spring connecting plate (11) is also connected to one end of the steel wire rope (12), the other end of the steel wire rope (12) is connected to one end of the lever member (8) after passing around the pulley (6), and the other end of the lever member (8) is provided with a limit bolt (14). The end of the limit bolt (14) extends to the long hole (401) of the limit link (4); the lower end of the column (7) is hinged on the limit link (4) near the connection between the limit link (4) and the other end of the wire rope (12); one end of the limit link (4) near the lever member (8) is connected to the dust push cloth mounting plate (13) through a dust push cloth mounting plate swing connection structure; the bottom surface of the dust push cloth mounting plate (13) is connected with a dust push cloth.

2. The dust pushing mechanism of a cleaning robot according to claim 1, characterized in that: The axial center line of the limiting bolt (14) is parallel to the horizontal plane, and the projection of the length direction of the mounting base plate (1) in the horizontal plane, the projection of the length direction of the electric push rod (2) in the horizontal plane, the projection of the length direction of the limiting connecting rod (4) in the horizontal plane, the projection of the length direction of the lever member (8) in the horizontal plane, the projection of the length direction of the tension spring (9) in the horizontal plane, and the projection of the length direction of the dust push cloth mounting plate (13) in the horizontal plane are all parallel or collinear with each other.

3. The dust pushing mechanism of a cleaning robot according to claim 1, characterized in that: A limit stop sleeve (15) is sleeved on the outer periphery of the limit bolt (14) located between the lever member (8) and the limit connecting rod (4).

4. The dust pushing mechanism of a cleaning robot according to claim 1, characterized in that: A winding screw (16) is provided on one end of the lever member (8). The other end of the steel wire rope (12) passes around the pulley (6) and then passes around the winding screw (16) and is locked with the steel wire rope (12) itself through a wire locker (17) to form an annular portion. The annular portion is sleeved on the outer circumference of the winding screw (16), thereby realizing the connection between the other end of the steel wire rope (12) and one end of the lever member (8).

5. The dust pushing mechanism of a cleaning robot according to claim 1, characterized in that: The swing connection structure of the dust push cloth mounting plate comprises an articulated seat A (18), an articulated seat B (19), an articulated shaft A (20), and an articulated shaft B (21); the articulated seat A (18) is fixedly connected to the top surface of the dust push cloth mounting plate (13); the upper end of the articulated seat A (18) is articulated to the lower end of the articulated seat B (19) via the articulated shaft A (20); and the upper end of the articulated seat B (19) is articulated to the lever member (8) via the articulated shaft B (21); The axial center line of the hinge axis A (20) is parallel to the horizontal plane and parallel to the length direction of the dust pusher cloth mounting plate (13), and the axial center line of the hinge axis B (21) is parallel to the horizontal plane and perpendicular to the length direction of the dust pusher cloth mounting plate (13).

6. The dust pushing mechanism of a cleaning robot according to claim 5, characterized in that: The articulated shaft A (20) adopts a steel ball pin with a pull ring at one end, and the articulated seat A (18) is provided with an oil-free bushing rotatably connected to the outer peripheral surface of the articulated shaft A (20).

7. The dust pushing mechanism of a cleaning robot according to claim 5, characterized in that: A limit plate mounting seat (22) is mounted on the hinge seat A (18), and a limit plate A (23) for limiting the rotation angle of the hinge seat B (19) is mounted on the limit plate mounting seat (22).

8. The dust pushing mechanism of a cleaning robot according to claim 5, characterized in that: The column (7) is provided with a limit plate B (24) and a limit plate C (25) respectively, and the limit plate B (24) is located above the limit plate C (25); when the whole formed by the hinge seat A (18) and the hinge seat B (19) rises to a specified highest position, the limit plate B (24) abuts against the side of the hinge seat B (19), and the limit plate C (25) abuts against the side of the hinge seat A (18).

9. The dust pushing mechanism of a cleaning robot according to claim 1, characterized in that: The bottom surface of the dust push cloth mounting plate (13) is connected to the dust push cloth via a Velcro structure.

10. The dust pushing mechanism of a cleaning robot according to claim 1, characterized in that: The front portion of the dust push cloth mounting plate (13) is bent upward to form a warped edge portion.

Images