Split Housing Attachment Structure for Low-Frequency Vibration Damping
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Solution Overview
Problem
Existing rotating devices face challenges in reducing noise and vibration, particularly in the low frequency range, due to the dominant rigid body mode in the housing's vibration characteristics, which is difficult to improve with increased rigidity.
Innovation Solution
A rotating device design featuring a housing composed of a first and second housing with deformable attaching parts that are bonded together, using elastic materials like polypropylene or polycarbonate, to absorb and cancel out stress and vibrations, thereby reducing noise and vibration transmission.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If rigid structure is used for housing, then structural strength is improved, but vibration and noise transmission is increased
Solution Approach 1:
The patent employs elastic attaching parts that function as flexible elements within the housing structure. These flexible attaching parts absorb and dampen vibration energy, reducing noise transmission while the overall housing structure maintains its structural strength through the combination of rigid housing bodies and flexible connecting elements.
Solution Approach 2:
The housing structure combines rigid housing materials with elastic attaching part materials, creating a composite structure. This composite approach allows different parts to serve different functions: the rigid housing provides structural strength while the elastic attaching parts provide vibration damping and noise reduction.
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 effectively suppresses noise and vibration generated by the rigid body mode without altering the external device's structure, achieving attenuation through internal stress cancellation and resonance suppression.
Implementation Method 1
using elastic materials like polypropylene or polycarbonate, to absorb and cancel out stress and vibrations
Data Source
AI summary
A rotating device includes a motor, a gear, and a housing configured to accommodate the motor and the gear. The housing includes a first housing, a second housing, and a joining element for joining the first housing and the second housing. The first housing includes a first attaching part attached to an external device. The second housing includes a second attaching part attached to the external device. The first attaching part and the second attaching part include surfaces opposing each other after the housing is assembled. The first attaching part and the second attaching part include the joining element.