Passive Hinge With Integrated Door Holder For Vehicle Doors

Solution Overview

Problem

Existing vehicle hinges with door holders require separate assembly and materials for hinges and door holders, increasing production and maintenance costs, and users face inefficiencies in opening and closing doors without additional effort.

Innovation Solution

A passive hinge with integrated door holder that allows doors to stop at a predetermined position without user intervention, combining hinge and door holder functions into a single unit, reducing assembly time and costs.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If hinges and door holders are positioned independently and assembled separately, then the door holder can provide door position control, but the assembly time and production cost increase due to multiple connection housings and materials

Engineering Contradiction:

Improvedoor position controlVSAvoidassembly time

Core Design Contradiction:

ReliabilityVSLoss of time

Solution Approach 1:

The patent combines the hinge and door holder into a single integrated unit. The door holder arm is directly connected to the hinge assembly, eliminating the need for separate connection housings and reducing the number of assembly steps. This merging maintains door position control functionality while significantly reducing assembly time and production cost.

Inventive Principle:

Principle #5Merging (Combining)

Solution Approach 2:

The integrated hinge assembly performs multiple functions: it provides the hinge rotation mechanism and simultaneously incorporates the door holder arm for position control. This multi-functional design eliminates the need for separate dedicated door holder components and their associated mounting structures, reducing part numbers and assembly complexity.

Inventive Principle:

Principle #6Universality (Multi-functionality)

2Reliability

If hinges and door holders are positioned independently and assembled separately, then the door holder can provide door position control, but the production cost increases due to excessive part numbers and materials

Engineering Contradiction:

Improvedoor position controlVSAvoidproduction cost

Core Design Contradiction:

ReliabilityVSEase of manufacture

Solution Approach 1:

The patent combines the hinge and door holder into a single integrated unit. The door holder arm is directly connected to the hinge assembly, eliminating the need for separate connection housings and reducing the number of assembly steps. This merging maintains door position control functionality while significantly reducing assembly time and production cost.

Inventive Principle:

Principle #5Merging (Combining)

Solution Approach 2:

The integrated hinge assembly performs multiple functions: it provides the hinge rotation mechanism and simultaneously incorporates the door holder arm for position control. This multi-functional design eliminates the need for separate dedicated door holder components and their associated mounting structures, reducing part numbers and assembly complexity.

Inventive Principle:

Principle #6Universality (Multi-functionality)

3Reliability

If a lock element is used to fix the door at a specific position, then the door opening amount is controlled, but the user must manually lift and release the door holder element to close the door

Engineering Contradiction:

Improvedoor position fixationVSAvoiddoor closing operation

Core Design Contradiction:

ReliabilityVSEase of operation

Solution Approach 1:

Instead of requiring the user to actively lift and release a locking mechanism, the design inverts the approach: the door holder arm passively engages with the hinge structure at predetermined positions during normal door movement. The engagement and disengagement occur automatically through the door's own motion, eliminating the need for manual intervention to release the door for closing.

Inventive Principle:

Principle #13The other way round (Inversion)

Solution Approach 2:

The door holder arm automatically engages with the hinge assembly at specific positions during door opening and disengages during closing without requiring user action. The mechanism uses the door's own movement to trigger the engagement and disengagement, making the system self-servicing and eliminating manual release operations.

Inventive Principle:

Principle #25Self-service

Data Source

PatentEP3990730B1A passive hinge with door holder

Publication Date: 2025.10.15 ROLLMECH AUTOMOTIVE SANAYI VE TICARET ANONIM SIRKETI

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AI summary

The present invention relates to a hinge (1) with door holder comprising at least one fixed body (10) connected onto a vehicle body (30), at least one movable body (20) connected to the vehicle door (40) and an axis pin (142) which provides connecting of the movable body (20) and the fixed body (10) to each other in a rotatable manner.