Vehicle Door Hold Lock Mechanism with Dual Grip Assembly

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Solution Overview

Problem

Conventional hold lock mechanisms for vehicle doors have a narrow contact area between the striker and catch, leading to slight movements and vibrations when holding the door in a predetermined position, causing shaking or vibration of the vehicle door.

Innovation Solution

A hold lock mechanism with a grip assembly and release assembly that includes a pair of grip members with hooks and a release member, which increases the contact area and prevents slight movements by gripping the door component securely, using a combination of biasing members and a release lever controlled by a control cable assembly.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Stability of the object's composition

If a conventional hold lock mechanism with a narrow contact area between striker and catch is used, then the device complexity is reduced, but the vehicle door experiences shaking or vibration due to slight movements between the striker and catch

Engineering Contradiction:

Improvestability of vehicle doorVSAvoidcomplexity of hold lock mechanism

Core Design Contradiction:

Stability of the object's compositionVSDevice complexity

Solution Approach 1:

The grip assembly is divided into a pair of separate grip members (first grip member and second grip member) that independently grip the door component at different locations. This segmentation increases the total contact area and prevents movement without requiring a single complex gripping structure

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The hook is movably mounted within the grip member, allowing it to move between an advanced position (engaging with the door component) and a retracted position. This nested configuration allows the hook to be stored within the grip member structure when not in use, reducing overall complexity while maintaining the enhanced stability function

Inventive Principle:

Principle #7Nested doll (Nesting)

2Stability of the object's composition

If a grip assembly with a pair of grip members is used to increase contact area, then the stability of the vehicle door is improved, but the device complexity increases

Engineering Contradiction:

Improvestability of vehicle doorVSAvoidcomplexity of grip assembly

Core Design Contradiction:

Stability of the object's compositionVSDevice complexity

Solution Approach 1:

The hook and the grip members are combined into a single integrated grip assembly unit. The hook is mounted on the grip members and works together with them to engage the door component, merging the functions of gripping and locking into one assembly to reduce overall system complexity

Inventive Principle:

Principle #5Merging (Combining)

Solution Approach 2:

The biasing member automatically biases the hook toward the advanced position, causing the grip members to automatically grip the door component when the hook engages. This self-acting mechanism eliminates the need for additional actuators or control systems, reducing complexity while maintaining stable door holding

Inventive Principle:

Principle #25Self-service

3Ease of operation

If a release assembly with a release member is added to control the hook movement, then the ease of operation is improved, but the device complexity increases

Engineering Contradiction:

Improveease of door releaseVSAvoidcomplexity of release assembly

Core Design Contradiction:

Ease of operationVSDevice complexity

Solution Approach 1:

The release member acts as an intermediary that transfers the release force to the hook. When the release member moves from the engaging position to the release position, it pushes the hook to the retracted position, providing a mechanical advantage that makes door release easier while using a simple linear movement mechanism

Inventive Principle:

Principle #24Intermediary (Mediator)

Solution Approach 2:

Instead of using a complex actuator system to actively pull the hook out for release, the design uses a biasing member that continuously pushes the hook into the engaged position. Release is achieved by simply overcoming this biasing force in the opposite direction, simplifying the release mechanism while maintaining secure engagement during normal operation

Inventive Principle:

Principle #13The other way round (Inversion)

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 mechanism effectively prevents shaking or vibration of the vehicle door by increasing the contact area and securely gripping the door component, ensuring stability when holding it in a predetermined position.

Implementation Method 1

the hook may be biased toward the advanced position by a first biasing member

Methodology Applied

Scientific EffectElasticity: Elasticity

Implementation Method 2

the release member may be biased toward the engaging position by a second biasing member

Methodology Applied

Scientific EffectElasticity: Elasticity

Data Source

PatentUS11512515B2Hold lock mechanism for vehicle door and vehicle door opening and closing apparatus having the same

Publication Date: 2022.11.29 HYUNDAI MOTOR CO LTD

AI summary

A hold lock mechanism for a vehicle door, the hold lock mechanism including a grip assembly configured to be mounted on a vehicle body, the grip assembly including a pair of grip members configured to releasably grip a door component and a hook provided on at least one of grip members, and a release assembly mounted on the door component, the release assembly including a release member configured to releasably engage with the hook.