Key Actuating Device Vibration Damping via Elastic Buffer
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Solution Overview
Problem
Conventional key operating devices for locks are often noisy due to mechanical vibrations and resonance, impairing ease of use.
Innovation Solution
A key operating device with a transmission housing attached to a base body via an elastic buffer device, which decouples vibrations and noise, and an electromechanical drive connected only to the gear housing, preventing direct transmission of noise and vibrations to the base body.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stability of the object's composition
If the transmission housing is rigidly attached to the base body, then structural stability is improved, but noise and vibration transmission increases
Solution Approach 1:
An elastic buffer device is introduced as an intermediary element between the transmission housing and the base body. This buffer device serves as a mediator that transmits necessary mechanical forces while blocking the transmission of noise and vibrations to the base body and door leaf, thus resolving the contradiction between structural stability and noise reduction.
Solution Approach 2:
The harmful vibrations and noises are extracted from the transmission system by isolating the transmission housing from the base body through the elastic buffer device. This separation prevents the propagation of harmful factors while maintaining the functional integrity of the drive mechanism.
2Power
If the electromechanical drive is directly connected to the base body, then driving effectiveness is improved, but noise transmission to the door leaf increases
Solution Approach 1:
The elastic buffer device acts as a mediator between the electromechanical drive and the base body, allowing the drive forces to be transmitted effectively while blocking the transmission of noise and vibrations to the door leaf, thus maintaining driving effectiveness while reducing noise.
3Strength
If the door leaf serves as a support structure, then structural strength is improved, but noise amplification increases
Solution Approach 1:
The harmful acoustic resonance is extracted from the door leaf by preventing the transmission of vibrations to it through the elastic buffer device. This separates the structural support function from the noise amplification effect, allowing the door leaf to serve its structural purpose without amplifying noise.
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 dampens noise and vibrations, resulting in quieter and more unobtrusive operation of the key actuation device.
Implementation Method 1
The elastic buffer device brings about a vibration decoupling between the transmission housing and the base body. This counteracts the transmission of noise and mechanical vibrations from the drive and the gear mechanism to the base body and from there to the door leaf.
Implementation Method 2
the buffer device is made of an elastomer, in particular rubber
Data Source
AI summary
A key-operating device for turning a key in a lock of a door or the like comprises a base body designed for direct or indirect attachment to the lock, an engagement element rotatable relative to the base body and designed for engagement with a key located in the lock, an electromechanical drive, and a gearbox for effectively coupling the electromechanical drive to the engagement element. The gearbox is housed in a gearbox casing, which is attached to the base body via at least one elastic buffer device.