Lifting and balancing mechanism for side brush of sweeping robot

Abstract

The utility model relates to a sweeper robot technical field discloses a kind of lifting balance mechanisms for sweeper robot edge brush, including fixed frame and edge brush, the inside fixed type connection of chassis is equipped with hydraulic cylinder, the top of hydraulic cylinder is fixedly connected with top plate, two connecting rods are fixedly connected with the both ends of top plate, reset spring is provided outside connecting rod, the bottom of connecting rod is movably connected with side frame, and the top of one end of side frame is provided with motor, and motor is fixedly connected with edge brush by rotating shaft, and top plate is driven to move up and down along guide rod by starting hydraulic cylinder, and top plate moves and drives connecting rod and side frame to move up and down, to drive the synchronous lifting of the edge brush of bottom, reset spring can buffer the impact force of ground when edge brush moves, and the pulley of side frame is embedded in sliding groove and rolls, limit side frame only vertically moves, avoid horizontal deviation or inclination, reduce friction loss while guaranteeing the levelness of edge brush.

Description

Technical Field

[0001] This utility model relates to the field of sweeping robot technology, specifically a lifting and balancing mechanism for the side brush of a sweeping robot. Background Technology

[0002] With the rapid development of smart home technology, robotic vacuum cleaners, as core devices for improving home cleaning efficiency, have been widely used in homes, offices and other scenarios. As a key cleaning component of robotic vacuum cleaners, the degree of contact between the side brush and the ground directly determines the cleaning effect. If the side brush is too high, it is easy to miss dust, hair and other debris on the ground; if the height is too low, it will increase the frictional resistance between the side brush and the ground, resulting in faster wear of the side brush, increased energy consumption of the robot, and even scratching floor materials such as tiles and wooden floors.

[0003] When faced with complex floor environments such as thresholds and carpet transition areas, the fixed-height side brushes cannot flexibly adjust their height. This can cause the robot to stop when crossing obstacles due to the side brushes getting stuck, or result in incomplete cleaning in low-lying areas due to the side brushes being suspended in the air. Some side brush mechanisms with simple lifting functions lack precise guiding and constraint structures, which can easily cause the side brushes to tilt or get stuck during lifting, resulting in inconsistent cleaning heights on both sides and creating cleaning blind spots.

[0004] Therefore, we propose a lifting and balancing mechanism for the side brush of a robotic vacuum cleaner to solve the above problems. Utility Model Content

[0005] To address the aforementioned technical problems, this utility model provides a lifting and balancing mechanism for the side brush of a sweeping robot.

[0006] This utility model is achieved using the following technical solution: a lifting and balancing mechanism for a side brush of a sweeping robot, comprising a fixed frame and a side brush. A base frame is provided at the bottom of the fixed frame, a hydraulic cylinder is fixedly connected inside the base frame, a top plate is fixedly connected to the top of the hydraulic cylinder, two connecting rods are fixedly connected to both ends of the top plate, a return spring is provided outside the connecting rods, a side frame is movably connected to the bottom of the connecting rods, a motor is provided at the top of one end of the side frame, the side brush is located at the bottom of one end of the side frame, and the motor is fixedly connected to the side brush through a rotating shaft.

[0007] Preferably, two limiting frames are fixedly connected to both sides of the base frame, and the inner side of the limiting frame is machined with a sliding groove. Multiple pulleys are fixedly connected to one side of the side frame, and the pulleys are movably connected inside the sliding groove.

[0008] Preferably, the bottom of the fixing frame is fixedly connected to two guide rods, and the top plate is movably connected to the bottom of the two guide rods.

[0009] Preferably, the bottom end of the reset spring is fixedly connected to the top of one end of the side frame, and the top end of the reset spring is fixedly connected to the bottom of the top plate.

[0010] Preferably, a limiting block is provided at the bottom of the connecting rod, and the limiting block is located inside the side frame.

[0011] Preferably, a limiting ring is provided at the bottom of the guide rod, and the limiting ring is located below the top plate.

[0012] Compared with the prior art, the beneficial effects of this utility model are: When this utility model is in use, if the robot vacuum cleaner needs to adjust the height of the side brush, the hydraulic cylinder is activated to drive the top plate to move up and down along the guide rod. The movement of the top plate drives the connecting rod and the side frame to move up and down, thereby driving the bottom side brush to rise and fall synchronously. During the rising and falling process, the return spring buffers the impact force of the side brush rising and falling by extending and retracting. The pulleys of the side frame are embedded in the sliding groove and roll, restricting the side frame to move only vertically, avoiding lateral deviation or tilting, reducing friction loss and ensuring the levelness of the side brush. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a schematic diagram showing the position and structure of the fixing frame and base frame of this utility model; Figure 3 This is a schematic diagram of the connection structure between the side frame and the limiting frame of this utility model.

[0014] In the diagram: 1. Fixed frame; 2. Side brush; 3. Motor; 4. Base frame; 5. Hydraulic cylinder; 6. Top plate; 7. Connecting rod; 8. Side frame; 9. Limiting frame; 10. Slide groove; 11. Pulley; 12. Guide rod; 13. Return spring. Detailed Implementation

[0015] The present invention will be further described below with reference to the accompanying drawings and specific embodiments. It should be noted that, without conflict, the various embodiments or technical features described below can be arbitrarily combined to form new embodiments.

[0016] Example 1: Please refer to Figure 1 - Figure 3This embodiment of a lifting and balancing mechanism for a side brush of a sweeping robot includes a fixed frame 1 and a side brush 2. A base frame 4 is provided at the bottom of the fixed frame 1. A hydraulic cylinder 5 is fixedly connected inside the base frame 4. A top plate 6 is fixedly connected to the top of the hydraulic cylinder 5. Two connecting rods 7 are fixedly connected to both ends of the top plate 6. A return spring 13 is provided outside the connecting rods 7. A side frame 8 is movably connected to the bottom of the connecting rods 7. A motor 3 is provided at the top of one end of the side frame 8. The side brush 2 is located at the bottom of one end of the side frame 8. The motor 3 is fixedly connected to the side brush 2 through a rotating shaft. The bottom end of the return spring 13 is fixedly connected to the top of one end of the side frame 8, and the top end of the return spring 13 is fixedly connected to the bottom of the top plate 6. The base frame 4 has a built-in hydraulic cylinder 5, which serves as a power source to drive the connecting rods 7 on both sides to rise and fall through the top plate 6, thereby driving the side frame 8 that carries the side brush 2 and the motor 3 to move. The return spring 13 outside the connecting rod 7 buffers the impact force of rising and falling through extension and retraction. At the same time, the motor 3 transmits power stably to the side brush 2 through the rotating shaft, ensuring that cleaning is not interrupted during rising and falling. Furthermore, two limiting frames 9 are fixedly connected to both sides of the base frame 4. The inner side of the limiting frame 9 is machined with a sliding groove 10. Multiple pulleys 11 are fixedly connected to one side of the side frame 8. The pulleys 11 are movably connected inside the sliding groove 10. The limiting frames 9 on both sides of the base frame 4 are provided with vertical sliding grooves 10. The pulleys 11 of the side frame 8 are embedded in the sliding grooves and roll, strictly limiting the side frame to only move vertically, avoiding lateral deviation or tilting, reducing friction loss while ensuring the horizontality of the side brush. Furthermore, the bottom of the fixed frame 1 is fixedly connected to two guide rods 12, and the top plate 6 is movably connected to the bottom of the two guide rods 12. The two guide rods 12 at the bottom of the fixed frame 1 pass through the top plate 6, constraining the movement direction of the top plate from the center, preventing the top plate from tilting due to uneven force, ensuring that the lifting height of the connecting rods on both sides is consistent, and indirectly ensuring the balance of the side brush. Furthermore, a limit block is provided at the bottom of the connecting rod 7, which is located inside the side frame 8. A limit ring is provided at the bottom of the guide rod 12, which is located below the top plate 6. The limit block at the bottom of the connecting rod 7 prevents it from coming off the side frame 8, and the limit ring at the bottom of the guide rod 12 prevents the top plate 6 from falling excessively. This double protection avoids damage to the components. Working principle: When the robot vacuum needs to adjust the height of the side brush 2, such as when encountering uneven ground or switching cleaning scenes, the control system issues a command to start the hydraulic cylinder 5. The piston rod of the hydraulic cylinder 5 extends or retracts, driving the top plate 6 to move up and down along the guide rod 12. The precise cooperation between the guide rod 12 and the top plate 6 ensures that the top plate 6 always remains horizontal and avoids deviation. When the top plate 6 moves, the driving force is transmitted to the side frames 8 on both sides through the connecting rods 7 at both ends. The pulleys 11 on one side of the side frame 8 roll along the slide grooves 10 of the limiting frame 9, guiding the side frame 8 to move up and down smoothly, thereby driving the side brushes 2 at the bottom to rise and fall synchronously, so as to achieve consistent height adjustment of the side brushes 2 on both sides, ensuring uniform coverage of the edge cleaning. During the lifting and lowering process, the return spring 13, which is fitted outside the connecting rod 7, buffers the impact force of lifting and lowering by telescopic movement. When facing complex ground environments such as thresholds and carpet transition areas, the return spring 13 can buffer the impact force between the side brushes 2 and the ground during movement, avoiding excessive wear of the side brushes. In addition, the limiting block restricts the connecting rod 7 from moving too far down, and the limiting ring restricts the top plate 6 from falling too far down. The double limiting prevents the collision damage of the components and ensures the safe operation of the mechanism.

[0017] After the side brush 2 is raised to a suitable height, the motor 3 starts and drives the side brush 2 to rotate at high speed to clean the dust on both sides of the robot. When cleaning is completed or when it needs to be reset, the hydraulic cylinder 5 is depressurized, and the top plate 6 drives the side frame 8 back to the initial position through the connecting rod 7 and the reset spring 13, waiting for the next raising and lowering command.

[0018] The above embodiments are merely preferred embodiments of this utility model and should not be construed as limiting the scope of protection of this utility model. Any non-substantial changes and substitutions made by those skilled in the art based on this utility model shall fall within the scope of protection claimed by this utility model.

Claims

1. A lifting and balancing mechanism for the side brush of a sweeping robot, comprising a fixed frame (1) and a side brush (2), characterized in that, The bottom of the fixed frame (1) is provided with a base frame (4), and a hydraulic cylinder (5) is fixedly connected inside the base frame (4). A top plate (6) is fixedly connected to the top of the hydraulic cylinder (5). Two connecting rods (7) are fixedly connected to both ends of the top plate (6). A return spring (13) is provided outside the connecting rod (7). A side frame (8) is movably connected to the bottom of the connecting rod (7). A motor (3) is provided at the top of one end of the side frame (8). The side brush (2) is located at the bottom of one end of the side frame (8). The motor (3) is fixedly connected to the side brush (2) through a rotating shaft.

2. The lifting and balancing mechanism for the side brush of a sweeping robot according to claim 1, characterized in that, The base frame (4) has two fixedly connected limit frames (9) on both sides. The inner side of the limit frame (9) is machined with a sliding groove (10). The side frame (8) has multiple pulleys (11) fixedly connected on one side. The pulleys (11) are movably connected inside the sliding groove (10).

3. The lifting and balancing mechanism for the side brush of a sweeping robot according to claim 1, characterized in that, The bottom of the fixed frame (1) is fixedly connected to two guide rods (12), and the top plate (6) is movably connected to the bottom of the two guide rods (12).

4. The lifting and balancing mechanism for the side brush of a sweeping robot according to claim 1, characterized in that, The bottom end of the reset spring (13) is fixedly connected to the top of one end of the side frame (8), and the top end of the reset spring (13) is fixedly connected to the bottom of the top plate (6).

5. The lifting and balancing mechanism for the side brush of a sweeping robot according to claim 1, characterized in that, The bottom of the connecting rod (7) is provided with a limiting block, which is located inside the side frame (8).

6. The lifting and balancing mechanism for the side brush of a sweeping robot according to claim 3, characterized in that, The bottom of the guide rod (12) is provided with a limiting ring, which is located below the top plate (6).

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