Abstract: The invention provides an autonomous mower, the autonomous mower including a housing; a mowing module, a traveling module, an information collection device, an energy module, a control module and the control module includes an identification unit, and an alarm module. The autonomous mower has a security patrol working mode in which the identification unit analyzes and judges whether an abnormal object exists in the working area according to the information collected by the information collection device; if the abnormal object exists, the control module controls the alarm module to send an alarm signal to the outside. Therefore, the autonomous mower can achieve a security patrol function in addition to having a function of trimming the lawn. The autonomous mower has multiple uses, so as to save the cost.

Abstract: The invention provides a grass trimmer and a cord delivering method for a grass trimmer, the grass trimmer comprises an extending rod, an housing, a grass trimming head, a handle, a main motor and a main switch, wherein the grass trimming head comprises a base, a cap and a spool having a first state relative static with the base, and the grass trimmer further comprises a cord delivering mechanism; the cord delivering mechanism comprises a cord delivering electronic switch independent of the main switch and a control device; and the cord delivering electronic switch operably electrically controls the control device to enable the spool to be in a second state capable of generating a rotary speed difference with the base. An operator does not need to interrupt work of the grass trimmer and can timely pay off required and the cord delivering operation is simple and convenient.

Abstract: A robot, a station, system and method therefor is described. The docking system includes, among other items, a robot and a docking station. The robot may have a power storage unit configured to supply power for the robot, a docking terminal group having a first docking terminal and a second docking terminal, and a robot control unit configured to control working state of the robot. The docking station includes a conductive terminal group comprising at least a first conductive terminal and a second conductive terminal. The conductive terminal group is configured to be electrically connected to the docking terminal group respectively. The robot control unit comprises a signal transmission module configured to be electrically connected to the first docking terminal and send a predetermined detection signal, a signal receiving module configured to be electrically connected to the second docking terminal.

Abstract: A robot, a station, system and method therefor is described. The docking system includes, among other items, a robot and a docking station. The robot may have a power storage unit configured to supply power for the robot, a docking terminal group having a first docking terminal and a second docking terminal, and a robot control unit configured to control working state of the robot. The docking station includes a conductive terminal group comprising at least a first conductive terminal and a second conductive terminal. The conductive terminal group is configured to be electrically connected to the docking terminal group respectively. The robot control unit comprises a signal transmission module configured to be electrically connected to the first docking terminal and send a predetermined detection signal, a signal receiving module configured to be electrically connected to the second docking terminal.

Abstract: A power tool comprising a housing, a motor, an output shaft, a gear transmission mechanism and a control system. The gear transmission mechanism is connected between the motor and the output shaft to transmit the rotary power of the motor to the output shaft. The power tool comprises a signal generator and a control system electrically coupled to the signal generator and operatively engaged with the gear transmission mechanism such that when the signal generator is manually activated, an electric signal is generated and transmitted to the control system to cause the gear transmission mechanism to vary the gear reduction ratio.

Abstract: A power tool comprising a housing, a motor, an output shaft, a gear transmission mechanism and a control system. The gear transmission mechanism is connected between the motor and the output shaft to transmit the rotary power of the motor to the output shaft. The gear transmission mechanism has a high speed position and a low speed position. The control system is coupled to the gear transmission mechanism for detecting an operating characteristic of the power tool to actuate a ring gear to automatically move from the high speed position to the low speed position and to reduce the rotational speed of the ring gear when the operating characteristic exceeding a predetermined value.

Abstract: A power tool includes a housing, a motor, an output shaft, a gear transmission mechanism and a control system. The gear transmission mechanism is connected between the motor and the output shaft to transmit the rotary power of the motor to the output shaft. The power tool includes a signal generator and a control system electrically coupled to the signal generator and operatively engaged with the gear transmission mechanism such that when the signal generator is manually activated, an electric signal is generated and transmitted to the control system to cause the gear transmission mechanism to vary the gear reduction ratio.

Abstract: A power tool comprising a housing, a motor, an output shaft, a gear transmission mechanism and a control system. The gear transmission mechanism is connected between the motor and the output shaft to transmit the rotary power of the motor to the output shaft. The gear transmission mechanism has a high speed position and a low speed position. The control system is coupled to the gear transmission mechanism for detecting an operating characteristic of the power tool to actuate a ring gear to automatically move from the high speed position to the low speed position and to reduce the rotational speed of the ring gear when the operating characteristic exceeding a predetermined value.

Abstract: A power tool comprising a housing, a motor, an output shaft, a gear transmission mechanism and a control system. The gear transmission mechanism is connected between the motor and the output shaft to transmit the rotary power of the motor to the output shaft. The power tool comprises a signal generator and a control system electrically coupled to the signal generator and operatively engaged with the gear transmission mechanism such that when the signal generator is manually activated, an electric signal is generated and transmitted to the control system to cause the gear transmission mechanism to vary the gear reduction ratio.