Housing with Differential Stiffness Retaining Portions for Shock Isolation
Solution Overview
Problem
Conventional housings for active elements like fans and liquid-cooling devices suffer from shock-induced resonance, leading to noise and instability due to the transfer of shock to heat-dissipating fins or housings, which loosens fixing elements.
Innovation Solution
A housing design featuring a main portion and retaining portions made of materials with different Young's modulus, where the retaining portions are connected to the main portion and include fixing sleeves to absorb shock and maintain stability, preventing noise and loosening of fixing elements.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If the housing is integrally formed in one piece with fixing holes for direct fixation, then the manufacturing process is simple and the structure is compact, but the shock produced by the active element is transferred to the heat-dissipating fins or housing, causing resonance, noise, and loosening of fixing elements
Solution Approach 1:
The housing is divided into a main body portion and at least two retaining portions made of different materials with different Young's modulus values. This segmentation allows the retaining portions to be made of a softer material that absorbs shock, while the main body can be made of a harder material for structural integrity, thereby preventing shock transfer to heat-dissipating fins while maintaining manufacturing simplicity through integrated formation of the segmented structure.
Solution Approach 2:
Different portions of the housing are made of materials with different local properties - the retaining portions are made of material with lower Young's modulus (softer, more shock-absorbent) while the main body can use material with higher Young's modulus (harder, more rigid). This local differentiation of material properties allows the housing to simultaneously achieve shock absorption at critical points while maintaining overall structural strength and manufacturing efficiency.
2Strength
If the housing material is made rigid to maintain structural strength, then the housing can support the active element, but the shock is transferred to the heat-dissipating fins or housing, producing resonance and noise
Solution Approach 1:
The housing employs local quality differentiation by making the retaining portions (which contact and support the active element) from material with lower Young's modulus for shock absorption, while the main body can use material with higher Young's modulus for structural strength. This localized material property differentiation allows the housing to simultaneously achieve both structural strength and shock absorption, preventing resonance and noise generation.
Solution Approach 2:
The housing is constructed as a composite structure with at least two different materials having different Young's modulus values. The retaining portions use a softer material (lower Young's modulus) to absorb shock and reduce resonance, while the main body uses a harder material (higher Young's modulus) for structural integrity. This composite approach resolves the contradiction between needing rigidity for strength and flexibility for shock absorption.
3Stability of the object's composition
If the fixing elements are used to secure the active element, then the active element is held in position, but the shock causes the fixing elements to loosen, reducing the stability of the active element
Solution Approach 1:
The retaining portions are made of material with lower Young's modulus to provide a compliant, shock-absorbing interface between the active element and the main body. This local softness at the fixing interface reduces the transmission of shock to the fixing elements, preventing them from loosening while still maintaining stable positioning of the active element through the compliant retaining portions.
Solution Approach 2:
The retaining portions act as intermediary elements between the active element and the main body housing. Made of material with lower Young's modulus, these retaining portions serve as a mediator that absorbs shock and protects the fixing elements from shock-induced loosening, while still providing stable support and positioning for the active element during operation.
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 design provides effective shock-proofing and shock-isolation, enhancing the stability of active elements by absorbing shock and preventing noise, while ensuring secure fixation through the use of materials with varying stiffness and strength compensation.
Implementation Method 1
The at least two retaining portions and the main portion are made of materials having different Young's modulus respectively... so that the main portion and the retaining portion have different stiffness to absorb the shock of the active element during operation
Data Source
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AI summary
A housing of an active component, which is used to install an active source, includes a main portion (1) and at least two retaining portions (2). The main portion (1) has side walls (11). The active source is installed on the main portion (1). The Young's modulus of the material making the retaining portion (2) is different from the Young's modulus of the material making the main portion (1). The retaining portion (2) is formed with fixing holes (25), and is connected to the side wall (11) of the main portion (1). It therefore provides better effects of shock proofing and shock isolation without unnecessary noise, and prevents a fixing element fixing the active component from being loosened, with enhanced stability of the active component. The present invention also provides a method for manufacturing a housing of the active component.