Vehicle Door Lock Control Mechanism Integration

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Solution Overview

Problem

Existing vehicle door lock control systems are bulky due to the increased number of parts required for the knob lever to move between unlocking and locked positions, which complicates the mechanism and increases size.

Innovation Solution

The vehicle door lock control system reduces the number of parts by directly connecting the knob lever to the locking knob and actuator, eliminating intermediate levers and using a guide member made of synthetic resin to facilitate the knob lever's movement between unlocking and locked positions, thereby minimizing the overall size and complexity.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If the knob lever is connected to an output lever of the actuator to enable the knob lever to move between the unlocking position and locked position, then the door lock control can achieve effective operation, but the number of parts increases and the size becomes larger

Engineering Contradiction:

Improvedoor lock operation effectivenessVSAvoidnumber of parts

Core Design Contradiction:

ReliabilityVSDevice complexity

Solution Approach 1:

The patent merges the output lever of the actuator with the knob lever into a single integrated component. This eliminates the need for a separate output lever while maintaining the functional connection between the actuator and the knob lever, thereby reducing the number of parts without compromising the door lock operation effectiveness

Inventive Principle:

Principle #5Merging (Combining)

Solution Approach 2:

The integrated lever serves multiple functions: it acts as both the output lever for transmitting actuator force and as the knob lever for manual operation. This multi-functionality reduces the overall number of components needed in the door lock control system

Inventive Principle:

Principle #6Universality (Multi-functionality)

2Reliability

Engineering Contradiction:

Improvedoor lock operation effectivenessVSAvoiddoor lock control size

Core Design Contradiction:

ReliabilityVSVolume of moving object

Solution Approach 1:

By combining the output lever and knob lever into a single integrated component, the patent reduces the overall volume of the door lock control mechanism. The merged structure eliminates redundant parts and reduces the space required for component arrangement while maintaining operational effectiveness

Inventive Principle:

Principle #5Merging (Combining)

Data Source

PatentUS7434854B2Vehicle door lock control

Publication Date: 2008.10.14 MITSUI KINZOKU ACT

AI summary

In a vehicle door lock control, an operating handle is provided at a door inside or outside a vehicle to enable a door to open and close. The handle is connected to an operating lever. In a locked position, the door cannot be opened by the operating handle, while it can be opened by the operating handle via a release lever in an unlocking position. The release lever pivotally secured on a base plate is connected to a door latch device of the door to allow the door latch device to disengage from a striker of a vehicle body in the unlocking position thereby opening the door by the operating handle. A lock control pin is moved by a knob lever to control the release lever to allow the door to open. The knob lever is operated by a knob manually inside the vehicle or by an actuator electrically.