Power Child Lock Lever Linkage for Interference-Free Door Release
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Solution Overview
Problem
Conventional power child lock devices experience interference between components when a rear door occupant opens the door and the driver simultaneously operates the power child lock switch, preventing smooth operation and potentially causing component damage.
Innovation Solution
The power child lock operating device features a series of interconnected levers with an elastic member and a rotating drive mechanism, including a worm gear and pressurizing spring, which allows for smooth operation without interference, ensuring reliable and damage-free operation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a power child lock device is implemented to allow driver-controlled locking/unlocking, then convenience and ease of operation are improved, but component interference occurs when simultaneous door opening and power child lock release operations are performed
Solution Approach 1:
The patent introduces a movable connection state between the inside handle lever and the third operating lever, allowing the system to dynamically switch between connected and disconnected states. This dynamic adjustment prevents interference during simultaneous operations while maintaining normal functionality, resolving the contradiction between ease of operation and operational reliability.
2Reliability
If the inside handle lever is always connected to the third operating lever, then manual door opening operation is reliable, but interference occurs during simultaneous power child lock release operation
Solution Approach 1:
The connection state between the inside handle lever and the third operating lever is changed from static (always connected) to dynamic (conditionally connected). The elastic member enables automatic connection/disconnection based on operational conditions, eliminating interference during power child lock release while maintaining reliability for manual door opening.
Solution Approach 2:
The elastic member acts as an intermediary mechanism that controls the connection state between the inside handle lever and the third operating lever. It mediates the interaction between these components, allowing connection when needed (manual opening) and disconnection when interference would occur (power child lock release).
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
The solution enables seamless operation of the power child lock device, enhancing reliability and preventing component damage by eliminating interference between levers, thus improving the overall functionality and durability of the vehicle's child lock system.
Implementation Method 1
an elastic member coupled to the third operating lever and the fourth operating lever and biasing in a predetermined direction so that the third operating lever is configured to be connected to the inside handle lever
Implementation Method 2
a worm as a drive gear provided in the drive motor, a first operating lever having a worm gear engaged with the worm
Data Source
Figure 1~2
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Figure 5~6
AI summary
A power child lock operating device may include a rotating drive device (10); a first operating lever (30) which receives the torque of the rotating drive device (10) to be rotated; a second operating lever (40) connected to the first operating lever (30) to be moved together; a third operating lever (50) connected to a door catch to lock or unlock the door catch; an inside handle lever (60) connected to an inside handle disposed at a door of a vehicle to be moved together; a fourth operating lever (70) selectively connecting the inside handle lever (60) and the third operating lever (50); and an elastic member (80) pressurizing to the fourth operating lever (70) so that the third operating lever (50) may be connected to the inside handle lever (60), improving the operation reliability of the power child lock device.