Vehicle Seat Backrest Adjustment Mechanism for Precision and Speed

Solution Overview

Problem

Existing adjustment devices for vehicle seat backrests either lack fine adjustments for small angle changes or are inconvenient for large angle adjustments, with current solutions either not allowing precise control or requiring prolonged manual operation.

Innovation Solution

A dual-adjustment device with a rotary knob for fine adjustments and a release lever for quick large-angle adjustments, utilizing interlocking cylindrical elements and radial pins to enable simultaneous fine and quick angular changes of the backrest.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Measurement precision

If a rotary knob is used for fine adjustment, then adjustment precision is improved, but adjustment speed deteriorates for large angles

Engineering Contradiction:

Improveadjustment precisionVSAvoidadjustment time

Core Design Contradiction:

Measurement precisionVSLoss of time

Solution Approach 1:

The adjustment mechanism is segmented into two independent systems: a fine adjustment system using a rotary knob with incremental positions, and a quick adjustment system using a release lever for continuous positioning. This segmentation allows each subsystem to optimize for its specific function without compromise.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The adjustment device achieves multi-functionality by integrating both fine adjustment (via rotary knob) and quick adjustment (via release lever) capabilities into a single backrest adjustment system, allowing the user to switch between adjustment modes based on needs.

Inventive Principle:

Principle #6Universality (Multi-functionality)

2Productivity

If a release lever is used for quick adjustment, then adjustment speed is improved, but adjustment precision deteriorates

Engineering Contradiction:

Improveadjustment speedVSAvoidadjustment precision

Core Design Contradiction:

ProductivityVSMeasurement precision

Solution Approach 1:

The adjustment mechanism is segmented into two independent systems: a fine adjustment system using a rotary knob with incremental positions, and a quick adjustment system using a release lever for continuous positioning. This segmentation allows each subsystem to optimize for its specific function without compromise.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The adjustment device achieves multi-functionality by integrating both fine adjustment (via rotary knob) and quick adjustment (via release lever) capabilities into a single backrest adjustment system, allowing the user to switch between adjustment modes based on needs.

Inventive Principle:

Principle #6Universality (Multi-functionality)

3Measurement precision

If manual rotation is required for fine adjustment, then adjustment precision is improved, but ease of operation deteriorates for large angles

Engineering Contradiction:

Improveadjustment precisionVSAvoidease of operation

Core Design Contradiction:

Measurement precisionVSEase of operation

Solution Approach 1:

The adjustment mechanism is segmented into two independent systems: a fine adjustment system using a rotary knob with incremental positions, and a quick adjustment system using a release lever for continuous positioning. This segmentation allows each subsystem to optimize for its specific function without compromise.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The adjustment device achieves multi-functionality by integrating both fine adjustment (via rotary knob) and quick adjustment (via release lever) capabilities into a single backrest adjustment system, allowing the user to switch between adjustment modes based on needs.

Inventive Principle:

Principle #6Universality (Multi-functionality)

Data Source

PatentUS10682929B2Adjustment device for adjusting the inclination of the backrest of a seat of a vehicle

Publication Date: 2020.06.16 MARTUR SUNGER VE KOLTUK TESISLERI TICARET VE SANAYI AS

AI summary

The present invention relates to an adjustment device for adjusting the inclination of the backrest (14) of a seat (10) of a vehicle, which allows to perform both quick adjustments of large angular amplitude and fine adjustments. According to a possible embodiment of the invention, the adjustment device comprises separate control elements (20, 22) for performing quick adjustments and fine adjustments, respectively, of the inclination of the backrest (14). According to another possible embodiment of the invention, the adjustment device comprises a single control element (20) for performing both quick adjustments and fine adjustments of the inclination of the backrest (14).