An automatic door opener and closer
A technology of automatic door opener and door closer, which is applied in the direction of instruments, windows/doors, electric locks, etc., and can solve problems such as automatic closing
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[0024] The automatic door opening and closing device is composed of a servo motor or a stepping motor (1), a controller, a power supply and a long rod (2) fixed on the rotating shaft of the servo motor or the stepping motor (1). Servo motor or stepping motor (1) is installed on the door frame and close to the door frame shaft, and the outer end of the long rod (2) is connected with the door to control the fan-shaped rotation of the door to open and then close. The automatic door opening and closing device is installed on one side of the opened door, the servo motor or stepping motor (1) is installed on the upper door frame of the door and close to the door frame shaft, and the servo motor or stepping motor (1) is installed on the rotating shaft A long bar (2) is fixed, and the outer end of the long bar (2) has a "strip-shaped O-shaped", and "strip-shaped O-shaped" is connected with the short stick on the connecting plate installed on the upper end of the door. The controller o...
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