Dual-Mass Vibration Absorber With Single-Bolt Mass Pair Assembly

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Solution Overview

Problem

Existing vibration absorbers face challenges in cost-effective production, high component count, and difficulty in independently adjusting natural frequencies, with complex manufacturing processes and high costs due to the need for multiple holding elements and vulcanization tools.

Innovation Solution

A vibration absorber design featuring a support plate with two sides and a mass pair on each side, connected by a single connecting bolt that protrudes through bores in the plate and mass elements, reducing the number of holding elements and allowing for adjustable resonance frequency without external installation space, using a minimal component approach.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If multiple holding elements are used to secure mass elements, then the connection reliability is improved, but the component count and device complexity increase

Engineering Contradiction:

Improveconnection reliabilityVSAvoidcomponent count

Core Design Contradiction:

ReliabilityVSDevice complexity

Solution Approach 1:

The patent combines multiple holding elements into a single integrated connecting bolt that secures both mass elements simultaneously. The connecting bolt features holding sections at both ends that engage with the mass elements, eliminating the need for separate holding elements for each mass element and reducing overall component count while maintaining secure connections

Inventive Principle:

Principle #5Merging (Combining)

2Device complexity

If a single connecting bolt is used to reduce component count, then the device complexity is reduced, but the manufacturing precision requirements increase

Engineering Contradiction:

Improvecomponent countVSAvoidalignment precision

Core Design Contradiction:

Device complexityVSManufacturing precision

Solution Approach 1:

The connecting bolt is designed as a multi-functional component that simultaneously serves as a connector, aligner, and securer for both mass elements. The holding sections at both ends and the central positioning section work together to automatically align and secure the mass elements, reducing the need for high-precision external alignment procedures during assembly

Inventive Principle:

Principle #6Universality (Multi-functionality)

3Volume of moving object

If mass elements are secured without external installation space, then the compactness is improved, but the ease of manufacture decreases

Engineering Contradiction:

Improveinstallation spaceVSAvoidassembly ease

Core Design Contradiction:

Volume of moving objectVSEase of manufacture

Solution Approach 1:

The mass elements are positioned on opposite sides of the carrier plate and secured by a single connecting bolt that passes through the carrier plate and engages with both mass elements. This nested arrangement allows the holding connections to be formed within the mass elements themselves without requiring external installation space, while the through-bolt design maintains ease of assembly

Inventive Principle:

Principle #7Nested doll (Nesting)

Data Source

PatentEP4293249A1Dual mass vibration absorber

Publication Date: 2023.12.20 VIBRACOUSTIC SE

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AI summary

A vibration damper is proposed, comprising a support plate (4) with two sides (6) which has a bore (8, 10), a mass element (12, 16) to each of the sides (6) which form a mass pair (14, 18), comprising a connecting bolt (20, 22) which passes through the bore (8, 10) and engages on both sides in the mass elements (12, 16) forming a respective retaining connection for fixing them to the support plate (4).