Terminal Arrangement Device With Differential Flexural Rigidity

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Solution Overview

Problem

In-vehicle devices require downsizing, weight reduction, and cost efficiency while maintaining high quality and preventing short circuits due to the need for sophisticated electrical connections.

Innovation Solution

A terminal arrangement device with elastically deformable supporting portions of different flexural rigidity to securely support output terminals, preventing short circuits and allowing for minimal clearance and efficient electrical connection, while enabling downsizing and cost reduction.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Volume of moving object

If a conventional fork-shaped connecting terminal with equal flexural rigidity supporting portions is used, then the structure is simple, but short circuits may occur and the device cannot be sufficiently downsized

Engineering Contradiction:
Improvedevice sizeVSAvoidshort circuit prevention
Core Design Contradiction:
Volume of moving objectVSReliability

Solution Approach 1:

The connecting terminal employs supporting portions with different flexural rigidities at different locations. Specifically, the first supporting portion has a first flexural rigidity while the second supporting portion has a second flexural rigidity that is greater than the first. This local differentiation allows one supporting portion to elastically deform and prevent short circuits while the other maintains structural stability, thereby resolving the contradiction between device downsizing and short circuit prevention.

Inventive Principle:
Principle #3Local quality

Solution Approach 2:

The invention introduces asymmetry in the flexural rigidity of the supporting portions of the connecting terminal. Instead of using symmetric supporting portions with equal rigidity, the design employs asymmetric rigidity distribution where one supporting portion is more flexible than the other. This asymmetric design enables differential deformation behavior that prevents short circuits while allowing compact device configuration.

Inventive Principle:
Principle #4Asymmetry

2Volume of moving object

If the connecting terminal is made compact to downsize the device, then the device volume is reduced, but the electrical connection strength may be compromised

Engineering Contradiction:
Improvedevice sizeVSAvoidelectrical connection strength
Core Design Contradiction:
Volume of moving objectVSStrength

Solution Approach 1:

The invention changes the physical parameters of the supporting portions by assigning different flexural rigidities to the first and second supporting portions. The first supporting portion has a lower flexural rigidity allowing elastic deformation for secure terminal support, while the second supporting portion has higher flexural rigidity for structural stability. This parameter differentiation enables compact device design while maintaining strong electrical connections through controlled elastic deformation of the flexible supporting portion.

Inventive Principle:
Principle #35Parameter changes

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

The solution effectively secures electrical connection strength, prevents short circuits, and allows for a compact and lightweight design, reducing production costs and ensuring reliable operation under varying conditions.

Implementation Method 1

a first supporting portion 31a and a second supporting portion 31b which are elastically deformable such that an output terminal 13 of the electric component 10 is supported between the first supporting portion 31a and the second supporting portion 31b

Methodology Applied
Scientific EffectElastic deformation: Elasticity

Implementation Method 2

The first supporting portion 31a has a flexural rigidity which is different from a flexural rigidity of the second supporting portion 31b

Methodology Applied
Scientific EffectFlexural rigidity: Elasticity

Data Source

PatentUS9172169B2Terminal arrangement device
Publication Date: 2015.10.27 DENSO CORP
  • US9172169B2 patent drawing
  • US9172169B2 patent drawing
  • US9172169B2 patent drawing

AI summary

A terminal arrangement device electrically connects an electric device, which is received in a housing, to an external device, and includes a first connecting terminal fixed to the housing. The first connecting terminal has a first supporting portion and a second supporting portion which are elastically deformable such that an output terminal of the electric device is supported between the first supporting portion and the second supporting portion. The first supporting portion has a flexural rigidity which is different from a flexural rigidity of the second supporting portion.