Vehicle Door Trim Integrating Pull Handle Shock Absorbers

Solution Overview

Problem

Vehicle trims with multiple shock absorbing portions of different hardnesses require separate components, increasing the number of parts and assembly costs.

Innovation Solution

Integrating at least one shock absorbing portion with a functional part, such as a pull handle, to reduce the number of separate parts and simplify assembly, while maintaining the ability to absorb shock energy effectively.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If multiple shock absorbing portions with different hardnesses are formed as separate members, then the shock absorption performance at different positions is improved, but the number of parts increases and assembly cost increases

Engineering Contradiction:

Improveshock absorption performanceVSAvoidnumber of parts

Core Design Contradiction:

ReliabilityVSDevice complexity

Solution Approach 1:

The patent combines multiple shock absorbing portions with different hardnesses into a single integrated shock absorbing member. This member includes a first shock absorbing portion and a second shock absorbing portion with different hardness values, eliminating the need for separate components while maintaining differentiated shock absorption characteristics at different positions.

Inventive Principle:

Principle #5Merging (Combining)

Solution Approach 2:

The integrated shock absorbing member exhibits local quality variations by having different hardness values in different regions. The first shock absorbing portion has a first hardness value while the second shock absorbing portion has a second hardness value, allowing each region to provide optimized shock absorption for its specific position and function.

Inventive Principle:

Principle #3Local quality

2Reliability

If multiple shock absorbing portions with different hardnesses are formed as separate members, then the shock absorption performance at different positions is improved, but the assembly cost increases

Engineering Contradiction:

Improveshock absorption performanceVSAvoidassembly cost

Core Design Contradiction:

ReliabilityVSEase of manufacture

Solution Approach 1:

The patent combines multiple shock absorbing portions with different hardnesses into a single integrated shock absorbing member. This member includes a first shock absorbing portion and a second shock absorbing portion with different hardness values, eliminating the need for separate components while maintaining differentiated shock absorption characteristics at different positions.

Inventive Principle:

Principle #5Merging (Combining)

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

This configuration reduces the overall number of parts and assembly costs while providing effective shock absorption in vehicle crashes, particularly protecting passenger body parts like the thigh by extending the shock absorbing portion from the pull handle.

Implementation Method 1

a plurality of shock absorbing portions 30, 50 with different hardnesses which are capable of absorbing shock energy

Methodology Applied

Scientific EffectShock absorption: Damping

Data Source

PatentUS8444209B2Trim for vehicles and door trim for vehicles

Publication Date: 2013.05.21 TOYOTA BOSHOKU KK

AI summary

It is an object of the present invention to provide a trim for vehicles capable of reducing the number of parts and thereby reducing the cost when a plurality of shock absorbing portions are required to have different hardnesses from each other. The trim for vehicles according to the present invention is a door trim 20 including a lower board 21, and a pull handle 40 mounted on the lower board 21, further including a plurality of shock absorbing portions with different hardnesses capable of absorbing shock energy, wherein an extension portion 50 of the plurality of shock absorbing portions is formed integrally with the pull handle 40, and the extension portion 50 has a shape extending downward from the pull handle 40.