Mechanical Two-Step Automobile Door Opening System

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Solution Overview

Problem

Existing automobile door opening systems are prone to accidents as they often require a single operation step without ensuring safety, and they have complex electronic structures that increase manufacturing costs and failure rates, especially when power is lost or electronic components fail.

Innovation Solution

A mechanical safe opening system that requires two operation steps, involving a connection stem, actuation plate, and rotary shaft to open the door completely, eliminating electronic parts and allowing operation without power, thus reducing failure rates and costs.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of operation

If a single operation step is used to open the automobile door, then the ease of operation is improved, but the safety is worsened as drivers may not notice obstacles behind the door

Engineering Contradiction:

Improveease of door openingVSAvoidcollision accident risk

Core Design Contradiction:

Ease of operationVSObject-affected harmful factors

Solution Approach 1:

The door opening operation is segmented into two distinct steps: first opening the door to a limited first degree (45-90 degrees) and then opening it to a second degree (fully open). This segmentation forces the driver to pause and check for obstacles behind the door before completing the opening action, thereby maintaining ease of operation while improving safety.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The system performs a preliminary action by opening the door only to a limited first degree before the driver can fully open it. This preliminary partial opening creates an opportunity for the driver to observe the environment behind the door and detect potential obstacles before the door is fully opened, preventing collision accidents.

Inventive Principle:

Principle #10Preliminary action

2Object-affected harmful factors

If electronic parts and control modules are used to implement two-step opening, then the safety is improved, but the device complexity and manufacture cost increase

Engineering Contradiction:

Improvecollision accident riskVSAvoidstructure complexity

Core Design Contradiction:

Object-affected harmful factorsVSDevice complexity

Solution Approach 1:

The patent replaces electronic control systems with a purely mechanical two-step opening mechanism. The mechanical structure includes a door opening limiter that physically restricts the door to a first degree opening, and a release mechanism that allows the driver to subsequently open the door fully. This mechanical substitution eliminates complex electronic parts, control modules, and power dependencies while maintaining the safety benefits of two-step opening.

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

Solution Approach 2:

The mechanical two-step opening system is self-service in that it automatically limits the door opening to the first degree without requiring electronic sensors or control signals. The driver simply needs to manually release the mechanical limiter to open the door fully, making the system independent of electronic power and control systems.

Inventive Principle:

Principle #25Self-service

3Manufacturing precision

If electronic control systems are used for door opening, then the control precision is improved, but the reliability worsens when power is lost or electronic parts fail

Engineering Contradiction:

Improvedoor opening control precisionVSAvoiddoor opening reliability

Core Design Contradiction:

Manufacturing precisionVSReliability

Solution Approach 1:

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

4Reliability

If a mechanical two-step opening system is used, then the reliability is improved by eliminating electronic parts, but the ease of operation may worsen due to additional manual steps

Engineering Contradiction:

Improvesystem reliabilityVSAvoiddoor opening convenience

Core Design Contradiction:

ReliabilityVSEase of operation

Solution Approach 1:

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

Instead of using electronic systems to automate the two-step opening process (which would reduce ease of operation), the patent inverts the approach by using a mechanical system that naturally enforces the two-step process. The mechanical limiter automatically prevents full opening until the driver consciously releases it, making the safety feature inherent to the mechanical design rather than an added electronic control layer.

Inventive Principle:

Principle #13The other way round (Inversion)

Data Source

PatentUS10173592B1Safe opening system for automobile door

Publication Date: 2019.01.08 SHIEH MING LONG

AI summary

A safe opening system is mounted on an automobile which contains a body, at least one automobile door, and the driving device. The body includes at least one peripheral frame, each of which has a locker with a fixing groove. Each automobile door includes a front fringe and a rear fringe which has an accommodation chamber, wherein the decoration plate has a door bar and an orifice. The driving device includes an actuation sheet and a spring, wherein the actuation sheet has a hook, a connection stem perpendicular to the actuation sheet, and a rotary shaft. The spring is fitted on the rotary shaft, and the driving device is accommodated in the accommodation chamber. The connection stem is inserted into each automobile door and a distal end of the connection stem is inserted through and partially extends out of the orifice.