| 摘要 |
PURPOSE: An auxiliary stepping device for a truck is provided to control the ascending or descending operation of an auxiliary step according to the getting on/off of a driver. CONSTITUTION: An auxiliary stepping device for a truck comprises a door unit(100), a step unit(200), and a control unit(300). The door unit senses the operation state of outer and inner door handles(110,120) installed outside and inside a door. The step unit comprises a fixed step(210) and an auxiliary step(220). The auxiliary step ascends and descends on the fixed step. When a driver gets on a truck, the control unit ascends the auxiliary step. When the driver gets off the truck, the control unit descends the auxiliary step. A pressure sensor(240) of the step unit senses pressure generated when the driver steps the auxiliary step. [Reference numerals] (110) Outer door handle; (111) Outer door handle sensor; (120) Inner door handle; (121) Inner door handle sensor; (210) Fixed step; (220) Auxiliary step; (230) Drive unit; (240) Pressure sensor; (250) First limit switch; (260) Second limit switch; (300) Control unit
|
