Modular Side-Plate Chair Back Assembly For Lumbar And Head Tilt

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Solution Overview

Problem

Conventional recliner chairs lack an integrated adjustable lumbar support and head tilt mechanism that can be easily installed on various seating styles, limiting comfort and adaptability.

Innovation Solution

An integrated assembly with adjustable lumbar support and head tilt mechanisms, featuring moveable side plates, motorized components, and a relief mechanism, allowing for easy installation on different chair back widths and heights, with preconfigurable options for furniture manufacturers.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If an integrated lumbar support and head tilt mechanism is added to conventional recliners, then user comfort and adaptability are improved, but device complexity and installation difficulty increase

Engineering Contradiction:
ImproveadaptabilityVSAvoiddevice complexity
Core Design Contradiction:
Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The assembly is divided into separate functional modules: a lumbar support mechanism with adjustable height and an head tilt mechanism with independent positioning. These modules are mounted on separate side plates that can be independently positioned and secured to the chair back, allowing complex functionality to be achieved through modular components rather than a monolithic structure.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The side plates serve multiple functions: they provide mounting surfaces for both lumbar and head tilt mechanisms, enable height adjustment along the chair back, and accommodate various chair back widths. The same basic assembly structure can be installed on different styles of chairs, making the system universally applicable across multiple product lines.

Inventive Principle:
Principle #6Universality (Multi-functionality)

2Adaptability or versatility

If an integrated lumbar support and head tilt mechanism is added to conventional recliners, then user comfort and adaptability are improved, but ease of installation deteriorates

Engineering Contradiction:
ImproveadaptabilityVSAvoidease of installation
Core Design Contradiction:
Adaptability or versatilityVSEase of operation

Solution Approach 1:

The lumbar and head tilt mechanisms are pre-assembled on the side plates at the factory, with all necessary mounting holes and adjustment features already in place. This preliminary assembly allows the mechanisms to be pre-adjusted and tested before installation, and enables quick installation on the chair by simply securing the completed assembly to the chair back without complex on-site adjustments.

Inventive Principle:
Principle #10Preliminary action

3Adaptability or versatility

If the assembly is made adjustable to accommodate various chair back widths and heights, then adaptability is improved, but device complexity increases

Engineering Contradiction:
ImproveadaptabilityVSAvoidstructural complexity
Core Design Contradiction:
Adaptability or versatilityVSDevice complexity

Solution Approach 1:

Height adjustment is achieved by positioning the side plates at different vertical locations along the chair back, utilizing the vertical dimension. Width adaptability is achieved by selecting side plates with appropriate horizontal spacing. This dimensional approach to adjustment allows the same basic assembly design to accommodate various chair sizes without requiring complex mechanical adjustment mechanisms.

Inventive Principle:
Principle #17Another dimension (Dimensionality change)

Data Source

PatentUS10376063B2Integrated lumbar and head tilt assembly
Publication Date: 2019.08.13 L & P PROPERTY MANAGEMENT CO
  • US10376063B2 patent drawing
  • US10376063B2 patent drawing
  • US10376063B2 patent drawing

AI summary

An integrated assembly is provided with both an adjustable lumbar support and a head tilt. The assembly is easily installed on any of a number of different seating units, and can be adjusted to accommodate seating units with a variety of back widths, and heights.