Cushion Spring Retaining Structure with Resin Support

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Solution Overview

Problem

Existing cushion spring retaining structures in vehicle seats often result in padding damage due to protruding claws and require complex installations, which can lead to discomfort and noise issues.

Innovation Solution

The use of supporting members and a linking attachment to position cushion springs in a way that reduces claw protrusion and eliminates direct contact with the padding, while also integrating the springs to prevent noise and damage.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If the claw protrudes from the cushion spring to retain the hook, then the cushion spring can be securely retained in the frame, but the padding member comes into contact with the protruding claw and may be damaged

Engineering Contradiction:

Improvecushion spring retentionVSAvoidpadding damage

Core Design Contradiction:

ReliabilityVSObject-affected harmful factors

Solution Approach 1:

The patent introduces a resin member as an intermediary component positioned between the claw and the padding member. This resin member has a height greater than the claw height, creating a protective barrier that prevents direct contact between the claw and padding, thereby eliminating the harmful effect while maintaining the retention function

Inventive Principle:

Principle #24Intermediary (Mediator)

Solution Approach 2:

The retaining structure is segmented into distinct functional components: the claw for retention, the resin member for protection, and the supporting stand for positioning. This segmentation allows each component to perform its specific function independently, with the resin member specifically addressing the padding protection issue

Inventive Principle:

Principle #1Segmentation

2Object-affected harmful factors

If a supporting stand is installed on the frame to support the padding member and prevent contact with the claw, then padding damage is prevented, but the installation becomes more complex and difficult

Engineering Contradiction:

Improvepadding damageVSAvoidinstallation complexity

Core Design Contradiction:

Object-affected harmful factorsVSDevice complexity

Solution Approach 1:

The patent merges the supporting stand and resin member into a single integrated component. The resin member itself serves dual functions: it protects the padding from claw contact and provides the necessary support structure, eliminating the need for a separate supporting stand and simplifying the overall assembly

Inventive Principle:

Principle #5Merging (Combining)

3Reliability

If the claw is positioned to retain the cushion spring hook, then the spring is secured, but the claw inevitably protrudes beyond the spring height causing potential padding contact

Engineering Contradiction:

Improvespring retentionVSAvoidclaw protrusion height

Core Design Contradiction:

ReliabilityVSShape

Solution Approach 1:

The resin member acts as an intermediary that fills the height gap between the claw and the padding member. By positioning this intermediate component, the system accommodates the necessary claw protrusion for retention while preventing the harmful contact with padding

Inventive Principle:

Principle #24Intermediary (Mediator)

Data Source

PatentEP2070764B1Cushion spring retaining structure

Publication Date: 2018.10.24 TOYOTA BOSHOKU KK

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AI summary

The present invention can include a seat frame (10) including a claw member (20), a spring member (30) having a first end and a second end both connected to the frame (10), wherein the first end is retainable in the claw member (20), also the first end includes a first and second support member (50A, 50B) positioned on either side of the claw member (20), the first and second support member (50A, 50B) having a height that is equal to or greater than a height of the claw member (20).