Electric cutting device with automatic emergency stop function

The present invention relates to a safety cutting tool (10)， comprising: an electrically conductive cutting element (12); A motor 20 for operation of the cutting element; A handle 30 for holding the tool; And an emergency stop device 40 that is sensitive to user contact with the cutting element. According to the invention， the tool comprises:-at least one first passive contact electrode and at least one second passive contact electrode (32， 34); An electrical monitoring circuit 42 comprising a first passive contact electrode 32 and a cutting element 12; -Monitoring voltage (V) between the cutting element 12 and the second passive contact electrode 34 E2) Measuring device 44; It further includes a comparator 74 that compares the at least one monitoring characteristic to the electrical threshold characteristic and drives the emergency stop device 40. The present invention is particularly applicable to battery shears and shears. The invention relates to a safety cutting device (10) comprising: an electrically conductive cutting member (12); a motor (20) for actuating the cutting member; a handle (30) for gripping the tool; and an emergency stop device (40) that is sensitive to a user making contact with the cutting member. The tool further comprises， according to the invention: - at least a first and at least a second manual contact electrode (32， 34); - an electrical monitoring circuit (42) comprising the first manual contact electrode (32) and the cutting member (12); - a device (44) for measuring a monitoring voltage (VE2) between the cutting member (12) and the second manual contact electrode (34); - a comparator (74) for comparing at least one electrical monitoring characteristic with an electrical threshold characteristic， the comparator (74) driving the emergency stop device (40). Applicable to secateurs and shears in particular. The invention relates to a safety cutting device (10) comprising: an electrically conductive cutting member (12); a motor (20) for actuating the cutting member; a handle (30) for gripping the tool; and an emergency stop device (40) that is sensitive to a user making contact with the cutting member. The tool further comprises， according to the invention: - at least a first and at least a second manual contact electrode (32， 34); - an electrical monitoring circuit (42) comprising the first manual contact electrode (32) and the cutting member (12); - a device (44) for measuring a monitoring voltage (V E2) between the cutting member (12) and the second manual contact electrode (34); - a comparator (74) for comparing at least one electrical monitoring characteristic with an electrical threshold characteristic， the comparator (74) driving the emergency stop device (40). Applicable to secateurs and shears in particular.