2results about How to "Realize anti-pinch function" patented technology

This utility model relates to the field of steel door technology and discloses a safety protection structure for preventing hand pinching in steel cleanroom doors. The structure includes a door frame, a support frame fixedly connected to the top of the door frame, a motor fixedly connected inside the support frame, an elliptical wheel fixedly connected to the drive end of the motor, a sliding shaft fixedly connected to the top of the elliptical wheel, a connecting rod slidably connected to the outer wall of the sliding shaft, a fixed shaft rotatably connected to the inner wall of the connecting rod, a rotating block fixedly connected to the outer wall of the fixed shaft, and a rotating shaft rotatably connected to the top of the rotating block. In this utility model, an infrared sensor controls the motor to drive the elliptical wheel to rotate, stopping the cleanroom door from rotating and causing it to rotate outwards. When an object moves away from the vicinity of the cleanroom door, the motor reverses, the sliding shaft slides to the end of the groove, and the connecting rod drives the rotating block to reset, achieving the anti-pinch function. This structure also provides safety protection; even when the door is stopped, it can still rotate in the opposite direction to prevent objects from getting stuck, thus improving the protection level.

The invention discloses an opening and closing mechanism and a control method and device thereof, a storage medium and a household appliance, the opening and closing mechanism comprises an opening and closing clamping plate, the opening and closing clamping plate is opened and closed through a motor, and the control method comprises the following steps: acquiring position information of the opening and closing clamping plate in the closing process of the opening and closing clamping plate; when it is determined that the opening and closing clamping plate is located at a first preset position according to the position information, the working voltage of the motor is controlled to be reduced by a preset voltage threshold value, and whether the motor generates locked-rotor current or not is judged; if the motor generates the locked-rotor current, the motor is controlled to rotate reversely until the opening and closing clamping plate is located at a second preset position, and then the motor is controlled to rotate forwards to close the opening and closing clamping plate; and if the motor does not generate the locked-rotor current and the opening and closing clamping plate is located at a third preset position, the working voltage of the motor is controlled to be increased to a preset voltage threshold value until the opening and closing clamping plate is closed, so that the anti-pinch function of the opening and closing mechanism is achieved, the service life of the opening and closing mechanism is prolonged, the use safety of the opening and closing mechanism is improved, and meanwhile the personal safety of a user is guaranteed.