折叠门主要由门框、门扇、传动部件、转臂部件、传动杆、定向装置等组成。该门型均可安装于室内和室外。每樘门有四个门扇，边门扇、中门扇各两扇。边门扇一边的边框与中门扇之间由铰链连接，边门扇另一边门梃上下端分别装有上下转轴，转轴与门洞两边门框上下转轴座相连接，边门梃将绕着一边梃旋转，同时带动中门扇一起旋转至90°，从而使门扇开启和关闭，电动时，上转轴端安装转臂部件、传动部件，门框上部中间安装传动部件和开门机；中门扇上设有定向装置。开门机运转后带动传动部件每部的两个齿轮旋转，与其齿合的两个齿条作直线运动，齿条的另一端与转臂连接，转臂作圆周运动，边门框即绕着一边梃旋转，电动开启门扇。两中门扇的中密缝均装有安全保护装置，关闭时遇有障碍物即回到全开启状态，安全可靠。
Folding door is mainly composed of door frame, door leaf, driving part, rotating arm part, driving rod, orientation device, etc. The door type can be installed indoors and outdoors. Each door has four leaves, two for the side and two for the middle. The frame on one side of the side door leaf is connected with the middle door leaf by hinge. The upper and lower ends of the stiles on the other side of the side door leaf are respectively equipped with upper and lower rotating shafts. The rotating shafts are connected with the upper and lower rotating shaft seats of the door frames on both sides of the door opening. The side stiles will rotate around the side stiles, and at the same time drive the middle door leaf to rotate to 90 ° together, so that the door leaf can be opened and closed. When electric, the upper rotating shaft end is equipped with rotating arm parts, driving parts and doors A driving part and a door opener are arranged in the middle of the upper part of the frame, and a directional device is arranged on the middle door leaf. After the operation of the door opener, it drives the two gears of each part of the transmission part to rotate, and makes a linear motion with the two toothed racks. The other end of the rack is connected with the rotary arm, and the rotary arm makes a circular motion. The side door frame rotates around the side stiles, and the door leaf is opened electrically. The middle sealing joints of the two middle door leaves are equipped with safety protection devices, which will return to the fully open state in case of obstacles when closing, safe and reliable.