Cavity Filter Slider Vibration Damping via Resilient Member

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Solution Overview

Problem

Vibrations from the motor in cavity filters cause the slider to vibrate, reducing the efficiency of adjusting the resonating frequency due to uneven movement.

Innovation Solution

A resilient member, such as a rubber ring, compression spring, or spring washer, is used to absorb vibrations between the slider and the driving device, ensuring smooth movement of the slider by connecting the slider to an adapter that is fixed to the motor shaft, thereby stabilizing the slider's position.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Strength

If the slider is fixed to the motor by fasteners, then the connection is strong and stable, but the slider vibrates due to motor vibration, reducing adjustment efficiency

Engineering Contradiction:

Improveconnection strengthVSAvoidadjustment efficiency

Core Design Contradiction:

StrengthVSProductivity

Solution Approach 1:

A resilient member is introduced as an intermediary component between the slider and the driving device. This resilient member absorbs vibrations from the motor while still maintaining the connection, allowing the slider to move smoothly without vibration-induced instability, thus resolving the contradiction between connection strength and adjustment efficiency

Inventive Principle:

Principle #24Intermediary (Mediator)

Solution Approach 2:

The resilient member provides beforehand cushioning by absorbing motor vibrations before they can be transmitted to the slider. This preemptive vibration absorption ensures the slider moves on an even keel during frequency adjustment, maintaining both connection integrity and adjustment efficiency

Inventive Principle:

Principle #11Beforehand cushioning (Prior cushioning)

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 resilient member effectively absorbs motor vibrations, allowing the slider to move smoothly and maintain stability, enhancing the efficiency of resonating frequency adjustments in cavity filters.

Implementation Method 1

a resilient member (60) is elastically connected between the slider (20) and the adapter (50), wherein the resilient member (60) absorbs the vibrations of the shaft (42)

Methodology Applied

Scientific EffectVibration absorption: Damping

Implementation Method 2

The resilient member, such as a rubber ring, compression spring, or spring washer, is used to absorb vibrations between the slider and the driving device

Methodology Applied

Scientific EffectElasticity: Elasticity

Data Source

PatentUS8981878B2Cavity filter with resilient member connected between slider and driving device

Publication Date: 2015.03.17 CLOUD NETWORK TECH SINGAPORE PTE LTD

AI summary

A cavity filter includes a slider, a driving device, an adapter and a resilient member. The slider is used to slide relative to and couple with a plurality of resonators located in the cavity filter to change a resonating frequency of the cavity filter. The driving device is used to drive the slider slide relative to the plurality of resonators. The adapter is installed between the slider and the driving device. The resilient member is elastically connected between the slider and the adapter and used to absorb vibrations of the driving device to make the slider move on an even keel.