Connector Rigidity Optimization for Vibration Resistance

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Solution Overview

Problem

There is a lack of guidelines on the optimal rigidity enhancement of connectors to achieve sufficient vibration resistance, requiring experimental durability tests to measure vibration resistance performance.

Innovation Solution

A connector design with a resonant frequency of 1600 Hz or higher is achieved by ensuring the rigidity k of the connector is greater than or equal to (2.0×10^7) × m, where m is the mass of the connector, and the rigidity is maintained below 360000 N/m to prevent efficiency reduction in connecting operations.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If the rigidity of the connector is enhanced to improve vibration resistance, then the relative displacement between connector housings is reduced, but the efficiency of connecting operations deteriorates

Engineering Contradiction:
Improvevibration resistanceVSAvoidconnecting operation efficiency
Core Design Contradiction:
ReliabilityVSEase of operation

Solution Approach 1:

The patent establishes specific parameter ranges for connector rigidity (k) to resolve the contradiction. By defining that the rigidity should satisfy (2.0×10^7)×m ≤ k < 3.6×10^5 N/m (where m is the mass of the second connector), the invention optimizes the balance between vibration resistance and connecting operation efficiency, avoiding both excessive softness and excessive hardness

Inventive Principle:
Principle #35Parameter changes

2Reliability

If the rigidity of the connector is increased to suppress vibration, then the resonant frequency increases, but the connector weight increases

Engineering Contradiction:
Improvevibration resistanceVSAvoidconnector weight
Core Design Contradiction:
ReliabilityVSWeight of moving object

Solution Approach 1:

The patent uses parameter optimization to achieve the desired resonant frequency (1600 Hz or higher) without excessive weight increase. By establishing the rigidity-mass relationship (2.0×10^7)×m ≤ k, the invention provides a guideline that allows designers to achieve sufficient vibration resistance while controlling connector weight through proper material and structural selection

Inventive Principle:
Principle #35Parameter changes

3Productivity

If the connector structure is simplified to reduce manufacturing cost, then the manufacturing time is reduced, but the vibration resistance performance deteriorates

Engineering Contradiction:
Improvemanufacturing efficiencyVSAvoidvibration resistance
Core Design Contradiction:
ProductivityVSReliability

Solution Approach 1:

The patent provides self-service through explicit design guidelines that enable manufacturers to achieve required vibration resistance performance without extensive experimental testing. By providing the rigidity formula and parameter ranges, the invention allows manufacturers to design connectors that meet performance requirements directly, reducing both development time and manufacturing costs while ensuring adequate vibration resistance

Inventive Principle:
Principle #25Self-service

Data Source

PatentUS11121500B2Connector
Publication Date: 2021.09.14 AUTONETWORKS TECH LTD
  • US11121500B2 patent drawing
  • US11121500B2 patent drawing
  • US11121500B2 patent drawing

AI summary

A connector that includes a male connector; and a female connector including a housing to be fit to the male connector along a connecting direction, wherein: a first connector of the male connector and the female connector is fixed with a second connector of the male connector and the female connector connected and, a rigidity k [N/m] satisfies k&lt;360000 when the second connector is distorted at a test speed of 1 mm/min in a direction intersecting the connecting direction and satisfies k≥(2.0×107)×m, where m [kg] denotes a mass of the second connector.