Connector Structure Vibration Damping via Elastic Deformation

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Solution Overview

Problem

Plate-shaped circuit boards tend to vibrate easily and cause resonance, making it difficult to suppress vibration transmission to electrical components using existing connector structures.

Innovation Solution

A connector structure with a displaceable female contact within a connector housing, where the male terminal is elastically deformed to press a contact sleeve against the housing, generating a friction force that dampens circuit board vibrations and suppresses vibration transmission.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If the female contact is made displaceable with respect to the connector housing, then vibration transmission from the circuit board to the electrical component is suppressed, but the circuit board vibration itself cannot be reduced

Engineering Contradiction:
Improvevibration transmission suppressionVSAvoidcircuit board vibration
Core Design Contradiction:
ReliabilityVSObject-affected harmful factors

Solution Approach 1:

The contact sleeve acts as an intermediary element between the male terminal and the connector housing. It transfers the restoring force from the deformed male terminal to press against the inner surface of the connector housing, generating friction force that dampens circuit board vibration while the displaceable female contact continues to suppress vibration transmission to the electrical component.

Inventive Principle:
Principle #24Intermediary (Mediator)

2Object-affected harmful factors

If the male terminal is elastically deformed to press the contact sleeve against the connector housing, then friction force is generated to dampen vibration, but the connector structure becomes more complex

Engineering Contradiction:
Improvevibration dampingVSAvoidconnector structure
Core Design Contradiction:
Object-affected harmful factorsVSDevice complexity

Solution Approach 1:

The male terminal serves multiple functions: it provides electrical connection through the female contact and simultaneously acts as a vibration damping mechanism through its elastic deformation. The restoring force from the deformed male terminal presses the contact sleeve against the connector housing to generate friction force, eliminating the need for separate vibration damping components.

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

Solution Approach 2:

The vibration damping function is merged into the existing electrical connection structure. The contact sleeve is integrated with the female contact, and the male terminal's elastic deformation is utilized to generate the pressing force, combining electrical connection and vibration damping into a unified structure.

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

Effectively reduces and absorbs circuit board vibrations, increasing the natural frequency to prevent resonance and suppress vibration transmission to electrical components.

Implementation Method 1

The male terminal may be elastically deformed such that the contact sleeve is pressed against an inner surface of the connector housing by a restoring force of the male terminal.

Methodology Applied
Scientific EffectElastic deformation: Elasticity

Implementation Method 2

The inner surface generates a friction force when the contact sleeve moves with respect to the connector housing. The vibration of the circuit board is damped by this friction force.

Methodology Applied
Scientific EffectFriction: Friction

Data Source

PatentUS11114784B2Electrical connector structure
Publication Date: 2021.09.07 TOYOTA JIDOSHA KK
  • US11114784B2 patent drawing
  • US11114784B2 patent drawing
  • US11114784B2 patent drawing

AI summary

A connector structure configured to electrically connect an electrical component to a circuit board is disclosed. The connector structure may include a female connector secured to the circuit board; and a male terminal extending from the electrical component and inserted into the female connector. The female connector may include a connector housing secured to the circuit board; a connector-side terminal located within the connector housing and including a female contact configured to receive the male terminal; and a contact sleeve located within the connector housing and secured to the female contact. The female contact may be displaceable within the connector housing. The male terminal may be deformed so as to press the contact sleeve against a frictional inner surface of the connector housing by a restoring force of the male terminal.