Universal Resilient Door Handle Mechanism with Spiral Spring
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Solution Overview
Problem
Conventional door handles and door knobs with resilient devices are typically designed for specific types, lacking flexibility and practical value due to their tight coupling with individual handles or knobs, limiting their adaptability to various applications.
Innovation Solution
A resilient device featuring two intermediate plates sandwiched between outer plates, incorporating a spiral spring and rotational seat, allows for universal compatibility with different door handles and knobs, utilizing pins for secure assembly and a saw-toothed center opening to facilitate rotational movement and spring expansion for automatic return to the original state.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the resilient device is tightly coupled to a specific door handle or door knob design, then the device can achieve reliable automatic restoration function, but the device loses flexibility and cannot be applied to various types of door handles or knobs
Solution Approach 1:
The resilient device is designed with a universal structure that can be applied to various types of door handles and door knobs. The device includes two outer plates with center openings that can accommodate different rotational seats, and the spiral spring mechanism can work with different door handle configurations. This universal design allows the same resilient device to restore multiple types of door handles to their original positions without requiring custom designs for each specific door handle type.
2Adaptability or versatility
If a universal resilient device is designed to work with various door handles and door knobs, then flexibility and adaptability are improved, but the device complexity increases
Solution Approach 1:
The resilient device is divided into several independent components: two outer plates, two intermediate plates, a rotational seat, a spiral spring, and multiple pins. Each component has a specific function and can be assembled independently. The outer plates provide the mounting structure, the intermediate plates support the spiral spring, the rotational seat engages with the door handle axle, and the pins secure all components together. This segmentation allows for easier manufacturing, assembly, and adaptation to different door handle types without significantly increasing overall complexity.
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
Enables flexible and efficient automatic restoration of door handles and knobs to their original position across various applications, enhancing practicality and adaptability without the need for custom designs.
Implementation Method 1
a spiral spring in the gap between the rotational seat and the intermediate plates. An end of the spiral spring is attached to the rotational seat and the other end is attached to the intermediate plates
Implementation Method 2
When the door handle or door knob is turned, the spiral spring is tightened as the rotational seat is turned along with the door handle or door knob. When the door handle or door knob is released later, the spiral spring expands and therefore restores the door handle or door knob back to its original, un-turned state
Data Source
AI summary
The resilient device contains two intermediate plates stacked and sandwiched between two outer plates. The intermediate plates have a center opening for accommodating a rotational seat and a spiral spring in the gap between the rotational seat and the intermediate plates. The ends of the spiral spring are attached to the rotational seat and the intermediate plates, respectively. An axle of a door knob or a door handle runs through the outer plates and engages a saw-toothed center opening of the rotational seat. When the door handle or door knob is turned, the spiral spring is tightened as the rotational seat is turned along with the door handle or door knob. When the door handle or door knob is released later, the spiral spring expands and therefore restores the door handle or door knob back to its original, un-turned state.