Slider Door Handle Detent Mechanism for Gap-Free Pivoting

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Solution Overview

Problem

Existing slider door handles for vehicles lack a mechanism that allows for pivotal movement without axial displacement, which can lead to a loose fit and potential moisture ingress, and do not efficiently return to a neutral position after use.

Innovation Solution

A vehicular slider door handle assembly featuring a base portion with a detent mechanism that maintains the handle against the door trim, enabling pivotal movement without axial displacement and utilizing a spring to bias the handle back to its neutral position, ensuring a secure and gapless interface.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of operation

If the handle is allowed to pivot freely without constraint, then the ease of operation is improved, but the handle may disengage from the base portion causing a loose fit and potential moisture ingress

Engineering Contradiction:

Improvepivotal movement of handleVSAvoidsecure fit between handle and base portion

Core Design Contradiction:

Ease of operationVSReliability

Solution Approach 1:

The detent mechanism allows the handle to dynamically pivot during operation while maintaining axial constraint through spring-loaded engagement. The mechanism transitions from a static fixed connection to a dynamic constrained connection that permits rotation but prevents disengagement.

Inventive Principle:

Principle #15Dynamics

Solution Approach 2:

The detent mechanism acts as an intermediary between the handle and base portion, providing controlled movement while maintaining secure engagement. The spring-loaded detent elements mediate the interaction between the pivoting handle and the stationary base, allowing rotation without full freedom of movement.

Inventive Principle:

Principle #24Intermediary (Mediator)

2Reliability

If the handle is constrained to prevent axial movement, then the reliability is improved, but the ease of operation may be reduced due to restricted pivotal movement

Engineering Contradiction:

Improvesecure fit between handle and base portionVSAvoidpivotal movement of handle

Core Design Contradiction:

ReliabilityVSEase of operation

Solution Approach 1:

The constraint system is made dynamic through the spring-loaded detent mechanism that engages and disengages during pivotal movement. The constraint is active during normal operation to prevent disengagement but allows controlled rotation through the detent engagement/disengagement cycle.

Inventive Principle:

Principle #15Dynamics

Solution Approach 2:

The mechanical parameters of the connection between handle and base portion are changed by the detent mechanism, which allows axial constraint while permitting rotational movement. The spring force and detent geometry create a parameter change that enables pivoting without axial displacement.

Inventive Principle:

Principle #35Parameter changes

3Reliability

If a detent mechanism is added to constrain axial movement, then the reliability is improved, but the device complexity increases

Engineering Contradiction:

Improvesecure fit between handle and base portionVSAvoidinternal mechanism of door handle

Core Design Contradiction:

ReliabilityVSDevice complexity

Solution Approach 1:

The detent mechanism is segmented into separate components (detent elements, springs, engagement surfaces) that can be manufactured independently and assembled into the handle assembly. This segmentation allows for simplified manufacturing and maintenance while achieving the reliability benefit.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The spring-loaded detent mechanism is self-actuating, using the force from the user's pivotal movement to engage and disengage the detents automatically. The system serves itself by converting the operational motion into the locking/unlocking action without requiring additional actuators or complex control mechanisms.

Inventive Principle:

Principle #25Self-service

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 allows for smooth and secure pivotal operation of the door handle without axial movement, maintaining a tight interface and efficient return to the neutral position, enhancing user experience and preventing moisture ingress.

Implementation Method 1

utilizing a spring to bias the handle back to its neutral position

Methodology Applied

Scientific EffectSpring: Spring

Data Source

PatentUS12187105B2Vehicular slider door handle with internal detent mechanism

Publication Date: 2025.01.07 MAGNA MIRRORS OF AMERICA INC

AI summary

A vehicular slider door handle assembly includes a base portion configured for mounting at a vehicular slider door, a handle pivotally mounted at the base portion and pivotable between a neutral position and a door opening position, and a detent mechanism. The detent mechanism releasably retains the handle relative to the base portion at the neutral position. With the base portion mounted at the vehicular slider door, the handle is pivotable about a pivot axis of the detent mechanism, and as the handle pivots about the pivot axis via actuation by a person at the vehicular slider door, the detent mechanism allows the handle to pivot from the neutral position toward the door opening position without axially moving the handle away from the base portion.