Vehicle Door Handle Coupling Device Decoupled Actuator
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Solution Overview
Problem
Existing motorized door handle mechanisms face stability issues and premature wear due to the integration of the push-push mechanism within the actuator mechanism, especially in backup manual modes, leading to complex designs and increased mechanical strain.
Innovation Solution
An actuator integrated coupling device with a decoupled push-push unit and motorized actuator, utilizing a cam, transmission mechanism, and elastic return means to move the handle lever between flush, ready, and retracted positions without mechanical strain on the actuator, allowing manual operation and motorized resetting of the push-push unit.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the push-push mechanism is integrated inside the actuator mechanism, then the door handle can be actuated manually in backup mode, but the gear mechanism is driven causing stability issues and premature wearing
Solution Approach 1:
The invention divides the door handle actuation system into two independent modules: a motorized actuator mechanism and a push-push mechanism. The push-push mechanism is extracted from inside the actuator and positioned separately, with its own independent transmission path through a dedicated lever arm. This segmentation allows manual backup operation without driving the motorized actuator's gear mechanism, eliminating the stability issues and premature wearing caused by integrated design.
Solution Approach 2:
The push-push mechanism is extracted from the actuator mechanism and positioned as a separate component. The manual push operation acts directly on the push-push mechanism's lever arm, which independently transmits force to the door handle without engaging the motorized actuator's reduction mechanism or gear system. This extraction eliminates the harmful effect of driving the gear mechanism during manual operation.
2Ease of operation
If the gear mechanism is driven during manual backup mode, then the push-push mechanism can function, but mechanical strain increases leading to complex design
Solution Approach 1:
The system is segmented into independent manual and motorized pathways. The manual pathway uses a simple lever arm connected to the push-push mechanism, while the motorized pathway uses the actuator's reduction mechanism. This segmentation allows manual operation without involving the complex gear mechanism, reducing mechanical strain and simplifying the overall design.
Solution Approach 2:
A dedicated lever arm acts as an intermediary between the user's manual push force and the door handle actuation. This lever arm directly engages the push-push mechanism without transmitting force through the motorized actuator's complex reduction mechanism or gear system, thereby reducing mechanical strain on the actuator components.
3Measurement precision
If the motorized actuator is used to move the handle lever, then precise position control is achieved, but the system requires complex reduction mechanism
Solution Approach 1:
The motorized actuator is designed to perform multiple functions: it can precisely control the handle lever position during normal operation and also serve to reset the push-push mechanism after manual activation. This multi-functionality reduces the need for additional dedicated components, simplifying the overall system while maintaining precise position control capability.
Solution Approach 2:
The motorized actuator serves itself by using its own capability to reset the push-push mechanism after manual activation. Instead of requiring a separate dedicated resetting mechanism, the actuator leverages its positional control capability to automatically return the handle lever and push-push mechanism to their initial states, reducing system complexity.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This solution enhances the efficiency and stability of the door handle mechanism by separating the actuator from the push-push unit, reducing wear and allowing for efficient manual operation while maintaining motorized functionality, thus improving the overall reliability and longevity of the door handle system.
Implementation Method 1
a cam (4) rotatable about an axis (A4)
Implementation Method 2
elastic return means
Implementation Method 3
a worm drive and gear mechanism, which reduces the rotational speed of the motor actuation while increasing torque value
Data Source
Figure 1~2
Figure 3~5
Figure 6~7
AI summary
An actuator integrated coupling device (C) for a vehicle door handle (1) having a handle lever (3) movable between a flush, ready and inward clicking position, said coupling device comprising a cam (4) rotatable about an axis (42), a motorized actuator (8) for rotating said cam (4), a transmission mechanism (T) comprising a first lever (6) for coupling with the cam (4) to move the handle lever (3) between said flush, ready and retracted positions, a push-push unit (9) coupled to the first lever (6) by a connecting rod (2) characterized in that the push-push unit (9) and the motorized actuator (8) are decoupled.