Anti-collision mechanism and sweeping robot

Abstract

An anti-collision mechanism comprises a body, a collision baffle, a magnetic element, and a magnetic field sensor, and the anti-collision mechanism is configured to be applicable to a sweeping robot. The magnetic field sensor is arranged at a distance from the magnetic element, the magnetic field sensor is configured to detect a change in the magnetic field intensity caused by a change in the distance between the magnetic field sensor and the magnetic element. When the collision occurs, the magnetic element is closer to the magnetic field sensor to make the magnetic field intensity change, thus generating signals to stop or turn the sweeping robot, which can realize the obstacle avoidance of the sweeping robot and enhance the service life. The sweeping robot is also provided.

What is claimed is: 
     
         1 . An anti-collision mechanism, configured to be applicable to a sweeping robot, the anti-collision mechanism comprising:
 a body;   a anti-collision baffle arranged on an exterior of the body, wherein the anti-collision baffle is arranged as a circular arc;   a magnetic element arranged on a side of the anti-collision baffle facing the body;   a magnetic field sensor arranged on a side of the body facing the anti-collision baffle; wherein a distance is defined between the magnetic field sensor and the magnetic element, and the magnetic field sensor is configured to detect a change in a magnetic field intensity when the distance between the magnetic field sensor and the magnetic element changes.   
     
     
         2 . The anti-collision mechanism of  claim 1 , wherein the anti-collision mechanism further comprises a top plate and a connecting plate, the top plate is arranged on a top side of the body, the top plate and the body form a fixed slot, the connecting plate is formed by extending a side of a top side of the anti-collision baffle facing the body, a part of the connecting plate is embedded in the fixed slot. 
     
     
         3 . The anti-collision mechanism of  claim 1 , wherein the anti-collision mechanism further comprises a bottom plate and a connecting piece, the bottom plate is arranged at a bottom of the body, the bottom plate comprises a first through hole, the anti-collision baffle comprises a fixing column arranged on a side of the anti-collision baffle facing the bottom plate, the fixing column comprises a second through hole, the connecting piece extends through the first through hole and the second through hole, the connecting piece is configured to fix the anti-collision baffle to the bottom plate. 
     
     
         4 . The anti-collision mechanism of  claim 3 , wherein the bottom plate comprises a convex block arranged on a side of the bottom plate facing the body, the body comprises a groove arranged on a side of the body facing the bottom plate, the convex block is embedded in the groove. 
     
     
         5 . The anti-collision mechanism of  claim 1 , wherein the magnetic element is arranged on the anti-collision baffle through a switching device, the switching device is configured to limit movements of the magnetic element. 
     
     
         6 . The anti-collision mechanism of  claim 5 , wherein the switching device is fixed on the side of the anti-collision baffle facing the body, the switching device is made of rigid material. 
     
     
         7 . The anti-collision mechanism of  claim 1 , wherein the magnetic field sensor is a Hall sensor. 
     
     
         8 . A sweeping robot comprising a main controller, a road wheel, and an anti-collision mechanism, wherein the main controller is electrically connected with a magnetic field sensor of the anti-collision mechanism, the main controller is configured to control the road wheel to stop or to turn, a profile of the anti-collision mechanism is matched to an exterior profile of the body, the anti-collision mechanism comprises:
 a body;   a anti-collision baffle arranged on an exterior of the body, wherein the anti-collision baffle is arranged as a circular arc;   a magnetic element arranged on a side of the anti-collision baffle facing the body;   a magnetic field sensor arranged on a side of the body facing the anti-collision baffle; wherein a distance is defined between the magnetic field sensor and the magnetic element, and the magnetic field sensor is configured to detect a change in a magnetic field intensity when the distance between the magnetic field sensor and the magnetic element changes.   
     
     
         9 . The sweeping robot of  claim 8 , wherein the sweeping robot further comprises an adapter shaft, the body comprises a drive motor, the driving motor is electrically connected with the main controller, the driving motor is connected with the road wheel through the adapter shaft, the driving motor is configured to drive the road wheel to rotate. 
     
     
         10 . The sweeping robot of  claim 8 , wherein the sweeping robot further comprises a control panel, the control panel is configured to display the working state of the sweeping robot. 
     
     
         11 . The sweeping robot of  claim 8 , wherein the anti-collision mechanism further comprises a top plate and a connecting plate, the top plate is arranged on a top side of the body, the top plate and the body form a fixed slot, the connecting plate is formed by extending a side of a top side of the anti-collision baffle facing the body, a part of the connecting plate is embedded in the fixed slot. 
     
     
         12 . The sweeping robot of  claim 8 , wherein the anti-collision mechanism further comprises a bottom plate and a connecting piece, the bottom plate is arranged at a bottom of the body, the bottom plate comprises a first through hole, the anti-collision baffle comprises a fixing column arranged on a side of the anti-collision baffle facing the bottom plate, the fixing column comprises a second through hole, the connecting piece extends through the first through hole and the second through hole, the connecting piece is configured to fix the anti-collision baffle to the bottom plate. 
     
     
         13 . The sweeping robot of  claim 12 , wherein the bottom plate comprises a convex block arranged on a side of the bottom plate facing the body, the body comprises a groove arranged on a side of the body facing the bottom plate, the convex block is embedded in the groove. 
     
     
         14 . The sweeping robot of  claim 8 , wherein the magnetic element is arranged on the anti-collision baffle through a switching device, the switching device is configured to limit movements of the magnetic element. 
     
     
         15 . The sweeping robot of  claim 14 , wherein the switching device is fixed on the side of the anti-collision baffle facing the body, the switching device is made of rigid material. 
     
     
         16 . The sweeping robot of  claim 8 , wherein the magnetic field sensor is a Hall sensor.