Spotlight Spring Fastening for Shock and Thermal Stability

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Solution Overview

Problem

Existing spotlight designs face challenges in avoiding mechanical and thermal loads, ensuring precise alignment, and maintaining self-centering of protective screens and reflectors under shock and thermal conditions.

Innovation Solution

The use of resilient spring elements with axial and radial springing capabilities, featuring U-shaped fastening lugs and kinked leaf springs, allows for secure attachment and self-centering of spotlight devices to the housing, while coil springs provide additional prestressing for enhanced stability.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Manufacturing precision

If rigid fastening methods are used to secure spotlight devices to the housing, then mechanical strength and positioning precision are improved, but the devices are exposed to substantial mechanical and thermal loads from shocks and heat dissipation

Engineering Contradiction:

Improvepositioning precisionVSAvoidmechanical and thermal loads

Core Design Contradiction:

Manufacturing precisionVSObject-affected harmful factors

Solution Approach 1:

The patent applies beforehand cushioning by introducing resilient spring elements between the spotlight devices and the housing before thermal and mechanical loads occur. These spring elements pre-absorb shocks and thermal expansions, preventing direct transmission of harmful loads to the spotlight devices while maintaining precise positioning through the resilient connection.

Inventive Principle:

Principle #11Beforehand cushioning (Prior cushioning)

2Temperature

If protective screens are spaced apart axially for thermal insulation, then heat insulation is improved, but maintaining mutual spacing becomes problematical under high thermal loading and violent movements

Engineering Contradiction:

Improvethermal insulationVSAvoidmutual spacing stability

Core Design Contradiction:

TemperatureVSStability of the object's composition

Solution Approach 1:

The patent applies dynamics by using resilient spring elements to connect the axially spaced protective screens. These spring elements allow the screens to maintain their thermal insulation spacing while dynamically adapting to thermal expansions and violent movements, ensuring spacing stability through elastic deformation rather than rigid constraints.

Inventive Principle:

Principle #15Dynamics

3Manufacturing precision

If precise alignment of spotlight devices is required on the optical axis, then beam quality is improved, but the arrangement and fastening requires high precision and large production outlay

Engineering Contradiction:

Improvealignment precisionVSAvoidfastening complexity

Core Design Contradiction:

Manufacturing precisionVSDevice complexity

Solution Approach 1:

The patent applies self-service through self-centering spring elements that automatically align spotlight devices with the optical axis. The resilient nature of these spring elements allows them to self-adjust and center the devices without requiring high-precision fastening operations, thereby reducing manufacturing complexity while maintaining precise alignment.

Inventive Principle:

Principle #25Self-service

4Reliability

If spring elements are used to buffer shocks and maintain alignment, then protection against mechanical loads is improved, but the structural complexity of the fastening system increases

Engineering Contradiction:

Improveshock protectionVSAvoidfastening structure

Core Design Contradiction:

ReliabilityVSDevice complexity

Solution Approach 1:

The patent applies universality by designing spring elements that simultaneously perform multiple functions: buffering shocks, maintaining thermal insulation spacing, ensuring self-centering alignment, and providing secure mechanical fastening. This multi-functionality reduces the need for separate components, thereby limiting the increase in structural complexity while comprehensively improving shock protection and reliability.

Inventive Principle:

Principle #6Universality (Multi-functionality)

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

This solution effectively buffers shocks, maintains thermal stability, and ensures precise alignment of spotlight components, providing optimal protection against impacts and thermal expansions.

Implementation Method 1

spring elements that are resilient in a radial direction of the spotlight housing and/or in an axial direction

Methodology Applied

Scientific EffectElasticity: Elasticity

Implementation Method 2

maintaining a prestressing on the spotlight devices connected to the spotlight housing

Methodology Applied

Scientific EffectThermal expansion: Thermal Expansion

Data Source

PatentUS7883245B2Illuminating spotlight

Publication Date: 2011.02.08 ARNOLD & RICHTER CINE TECHNIK GMBH & CO BETRIEBS KG

AI summary

An illuminating spotlight having a spotlight housing and a spotlight device connected to the spotlight housing, in particular a protective screen, spotlight lens or reflector, is provided. The lateral edge of the spotlight device is connected to the spotlight housing via spring elements arranged in a distributed fashion. The spring elements having a fastening lug that is connected to the spotlight housing and from which there are angled away two spring arms which bear against the lateral edge of the spotlight device and are designed to be resilient in a radial direction of the spotlight housing. Spring stops of resilient design are project in an axial direction of the spotlight housing which bear against at least one surface of the spotlight device from the spring arms.