Vehicle Door Drive With Selective Torque Path Blocking
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Solution Overview
Problem
Existing door drives for vehicles subject door components such as toothed belts, dogs, guide rollers, and locking levers to high loads, leading to potential wear and tear.
Innovation Solution
A door drive system with a blocking device that can be activated and deactivated, allowing the transmission of drive power through one torque transmitting device while blocking the other, thereby reducing loads on door components.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Power
If both torque transmitting devices are used simultaneously, then the drive power transmission is increased, but the load on door components (toothed belts, dogs, guide rollers, locking levers) is increased
Solution Approach 1:
The drive system is segmented into two separate torque transmitting devices (first and second torque transmitting devices), each capable of transmitting drive power independently. The blocking device enables selective activation of one device at a time, dividing the load transmission function into separate pathways that can be used alternately rather than simultaneously, thereby reducing the force load on door components while maintaining drive power transmission capability.
2Force
If one torque transmitting device is blocked, then the load on door components is reduced, but the drive power transmission is limited to one device at a time
Solution Approach 1:
The blocking device is designed to be dynamically controllable, allowing the system to switch between blocking the first torque transmitting device and blocking the second torque transmitting device based on operational requirements. This dynamic configuration enables the system to reduce load on door components when needed while maintaining the capability to transmit full drive power through the active torque transmitting device, achieving a balance between load reduction and power transmission.
3Reliability
If a blocking device is introduced to reduce load on door components, then the device complexity is increased, but the reliability and lifespan of door components is improved
Solution Approach 1:
The blocking device serves as an intermediary element between the two torque transmitting devices and the door components. By introducing this mediating mechanism, the system can selectively prevent one torque transmitting device from transmitting power to the door components, thereby reducing the load and improving the reliability and lifespan of the door components. The blocking device acts as a control element that manages the interaction between the drive system and the door mechanism.
Data Source
AI summary
A door drive for a door of a vehicle includes a rotation motor, a first torque transmitting device for transmitting a first torque, and a second torque transmitting device for transmitting a second torque. The door drive further includes a blocking device for blocking the first torque transmitting device, wherein the blocking device can be activated and deactivated, and the door drive has a component configured for activating and/or deactivating the blocking device. The door drive can be used to drive a door leaf, using the first torque transmitting device and to control a locking device using the second torque transmitting device. A drive power of the rotation motor is transmitted successively via the first and second torque transmitting devices with the aid of the blocking device.