Locomotive Seat Headrest Guide for Concealed Adjustment

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Solution Overview

Problem

Conventional seat designs for locomotive means struggle to conceal the connecting region between the headrest and backrest while maintaining adjustable headrests, and crash-active headrests in sports seats are non-adjustable due to restricted space, limiting crash activity.

Innovation Solution

A seat design featuring a carrier system with extended backrest structure and a guide device for the headrest, allowing vertical adjustment and concealment of the connecting region, combined with a crash-active mechanism for enhanced safety.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If the headrest is made adjustable using carrier rods and a guide device, then the headrest adjustability is improved, but the connecting region between headrest and backrest becomes visible and aesthetically unacceptable

Engineering Contradiction:

Improveheadrest adjustabilityVSAvoidconcealment of connecting region

Core Design Contradiction:

Adaptability or versatilityVSShape

Solution Approach 1:

The carrier rods are integrated into the backrest structure itself, with the guide device nested within the backrest carrier system. The headrest moves along concealed guide rails that are built into the backrest, making the adjustment mechanism invisible from the exterior while maintaining full adjustability functionality.

Inventive Principle:

Principle #7Nested doll (Nesting)

Solution Approach 2:

The carrier system is merged with the backrest structure, where the backrest itself serves as the mounting structure for the headrest adjustment mechanism. The guide device and carrier rods are combined into a unified integrated system that is structurally part of the backrest, eliminating the need for separate visible external components.

Inventive Principle:

Principle #5Merging (Combining)

2Shape

If the backrest structure is extended to conceal the carrier system, then the aesthetic appearance is improved, but the space for headrest adjustment is restricted

Engineering Contradiction:

Improveconcealment of carrier systemVSAvoidheadrest displacement space

Core Design Contradiction:

ShapeVSVolume of moving object

Solution Approach 1:

The headrest adjustment mechanism utilizes the depth dimension of the extended backrest structure, with guide rails extending into the backrest carrier system. The headrest travels along three-dimensional pathways within the backrest volume, allowing sufficient displacement space while maintaining a sleek external profile that conceals the mechanism.

Inventive Principle:

Principle #17Another dimension (Dimensionality change)

Data Source

PatentUS12012024B2Seat with headrest for a locomotive means and locomotive means

Publication Date: 2024.06.18 BAYERISCHE MOTOREN WERKE AG

AI summary

A seat with a headrest for a locomotive means includes a carrier or support system for a backrest of the seat, a support element having an installation section, and a guide device. The headrest has a headrest box, wherein the installation section of the support element is arranged on the support system in a stationary manner in the region of the headrest. The headrest box is movably arranged on the guide device, and the headrest box can be locked relative to the guide device in a movement direction.