Elastic Door Stop Kinematic Mechanism for Noise Reduction
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Solution Overview
Problem
Existing door control systems for automatic doors lack ease of assembly, design simplicity, mechanical strength, and aesthetic appeal, with mechanical stops often being unreliable and not meeting user expectations.
Innovation Solution
A device featuring a kinematic mechanism with adjustable levers and a stop component made of elastic material, mounted on a bracket, which engages with the kinematic mechanism to control the door's opening angle and prevent excessive movement, allowing for intuitive adjustment and installation post-assembly.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a mechanical stop is placed on the floor to control door opening, then the door stopping is reliable, but the design is ugly and assembly is complex
Solution Approach 1:
Instead of placing the stop on the floor (traditional approach), the invention inverts the arrangement by mounting the stop component on the door leaf itself, allowing the stop to engage with the door frame or threshold from above, thus eliminating the need for floor-mounted stops and simplifying assembly
Solution Approach 2:
The invention introduces a stop component as an intermediary element that mediates between the door leaf and the door frame/threshold, providing reliable stopping without requiring complex floor-mounted mechanisms. This intermediary component simplifies the overall system while maintaining reliability
2Device complexity
If electronic control is used to stop door movement, then the design is simple, but the stopping is not reliable
Solution Approach 1:
The invention merges electronic control with a mechanical stop component, combining the simplicity of electronic actuation with the reliability of mechanical stopping. The electronic system triggers the door movement while the mechanical stop ensures reliable positioning, creating a hybrid system that benefits from both approaches
Solution Approach 2:
The invention creates a composite control system that integrates electronic control mechanisms with mechanical stop components, similar to how composite materials combine different material properties. This hybrid approach leverages the advantages of both electronic simplicity and mechanical reliability
3Adaptability or versatility
If the door opening position is variable and uncertain, then the door can open to any angle, but the lack of consistent stopping point is problematic
Solution Approach 1:
The invention enables adjustment of the stop component's position or engagement point, allowing the door opening angle to be precisely controlled and reproduced. This parameter adjustment capability ensures consistent stopping at the desired angle while maintaining the ability to adapt to different requirements
4Reliability
If traditional mechanical stops are used, then the stopping is reliable, but the aesthetic appeal is poor
Solution Approach 1:
The invention moves the stop component from the floor level (traditional horizontal arrangement) to the door leaf or upper structure (vertical arrangement), changing the spatial dimension of the stopping mechanism. This dimensional change improves aesthetic appeal by removing visible floor-mounted stops while maintaining mechanical reliability
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 provides a reliable, aesthetically pleasing, and easy-to-adjust door control system that ensures consistent door opening, preventing over-opening and reducing noise and shock through elastic damping, while maintaining mechanical strength and eliminating the need for floor-mounted stops.
Implementation Method 1
The stop component 6 can be made of a material that is sufficiently elastic to dampen contact noise and absorb shocks
Data Source
Figure 1~2
Figure 3~5
Figure 6~7
AI summary
The present invention relates to a device for guiding and controlling the opening of a door, in particular an automatic door,