First of all, let's introduce what is the articulated link transmission mechanism (gear type lifting mechanism), when the drive motor drives the sector gear that meshes with the articulated link transmission mechanism through the pinion. This transmission mechanism can work forward and reverse. Another cable-type transmission mechanism (cable-type elevator mechanism) is a driving motor to drive the cable-elevating mechanism through the cable drum.
Window drive motor: Only flat motors can be used in the space inside the door. The deceleration transmission mechanism is a self-locking worm gear transmission mechanism, which can prevent accidental and forced opening of the window. The damping element combined in the transmission system can ensure a good cushioning effect when the window is in two extreme positions.
Window drive control: The manual control of the window can be achieved using the swing switch. In order to improve the operating comfort, a centralized or decentralized window closing mechanism can also be used to drive the windows. The window automatically closes when the driver leaves the car or in a ventilated position.
When closing the window, the window closing force limit (SKB, Schlieβkraftbegrenzung) is preset, so that any part of the occupant's body can be avoided. According to the German highway traffic regulations, the window closing force limit must be in the adjustment range of 200-4mm slightly opened from the upper part when the window is closed upward.
During adjustment, the Hall speed sensor inside the combined window drive mechanism monitors the drive motor speed. If the drive motor decelerates, the motor will immediately reverse rotation. The window closing force should not exceed 100N when the spring rate is 10N / mm. In order to ensure that the window can be closed every time, the window closing force limit is automatically cut off before the window enters the sealing strip until the drive motor is in a locked state. The window position can be detected through the total adjustment stroke.
Window drive control can be incorporated in the central electronic control unit or combined in a distributed window drive motor to reduce wiring harness costs. The decentralized electronic systems are networked through the bus interface, such as LIN bus and CAN bus. The advantage is that it can realize the fault diagnosis of the electronic system and further reduce the wiring harness.
The sunroof drive combines the sunroof lifting and moving functions. Special motor control is required for this. In the motor control, the mechanical locking limit stroke switch can change the sunroof from the closed state to the open state or the lift state according to the polarity on the terminal. When the sunroof is in the open or lifted state, changing the polarity of the limit stroke switch can make the sunroof in the closed or lowered state. If the lifting or moving mechanism is connected to the central locking mechanism, the advantage is that the electronic control of the skylight closing force limitation can be used together. The skylight drive control uses a microcomputer. The microcomputer processes the input signal of the skylight movement and monitors the position of the skylight movement. Using the micro switch or Hall position sensor can control the original position of the sunroof and the limit position of movement. In addition, there are other functions, such as: budgetable position control, using the rain sensor to close the sunroof, driving motor speed control, driving motor electronic protection and other functions.
Drive system: Drive the sunroof through the cable or the control cable with tension and compression. The drive motors are mostly installed directly in the sunroof or in the rear of the car, such as the luggage compartment. The driving motor is a motor driven by a permanent magnet excitation worm gear, and the output power is about 30W. Use thermal protection switch or software thermal protection (mainly) to prevent motor overload. When the electrical system fails, make sure that the sunroof can be closed with simple on-board tools.
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