Door Closing Impact Absorber for Shake and Noise Suppression
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Solution Overview
Problem
Opposing vehicle doors often experience incomplete sealing, leading to door shaking, impact, and noise during closure due to mismatched door panels and weather strips.
Innovation Solution
A door closing impact absorber apparatus with a first and second body that are relatively movable, featuring an elastic portion and an impact absorber, along with a guide portion and guide rail system to absorb and manage the closing impact, preventing shaking and noise.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If opposing door is closed without impact absorption, then door closure speed is maintained, but door shaking and noise occur due to incomplete sealing
Solution Approach 1:
The patent applies beforehand cushioning by installing an impact absorber device within the door mechanism that activates during door closure. The elastic portion and impact absorber are positioned to engage when the door closes, providing cushioning force before the door fully shuts. This prevents door shaking and noise by absorbing the impact energy during the closing process, while maintaining a relatively simple overall door mechanism structure.
2Reliability
If impact absorber is added to absorb closing impact, then door shaking is prevented, but device complexity increases
Solution Approach 1:
The patent applies nesting by integrating the impact absorber components within the existing door mechanism structure. The first body and second body are coupled together with the elastic portion nested between them, and the impact absorber is mounted on the second body. This nested arrangement allows the impact absorption function to be incorporated without significantly increasing the overall device complexity, as the components are contained within the existing mechanical framework.
3Object-affected harmful factors
If elastic portion is installed between movable bodies, then impact is absorbed elastically, but manufacturing precision requirements increase
Solution Approach 1:
The patent applies parameter changes by utilizing the elastic properties of the elastic portion to transform the rigid impact force into a flexible, absorbable deformation. The elastic portion is installed between the first body and second body, allowing it to deform elastically during door closure to absorb impact. This approach reduces the need for high manufacturing precision in the movable bodies themselves, as the elastic component compensates for minor dimensional variations through its inherent flexibility.
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 solution effectively absorbs the impact during door closure, preventing door shaking and noise, thereby enhancing marketability and ease of operation.
Implementation Method 1
an elastic portion disposed between the first body and the second body to support elastically the first body and the second body
Implementation Method 2
an impact absorber mounted on one end portion of the second body
Data Source
AI summary
A door closing impact absorber apparatus includes a first body, a second body coupled to the first body, wherein the first body and the second body are relatively movable therebetween, and an elastic portion disposed between the first body and the second body to support elastically the first body and the second body.