Low-noise Lamp Reset Structure Using Elastic Cushioning
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Solution Overview
Problem
Existing stage light fixture reset methods generate noise due to repeated collisions with limiting structures during power-on reset, leading to instability and inaccuracy in achieving the initial position.
Innovation Solution
A low-noise reset structure incorporating a pivot shaft, pivot member, shifter lever, elastic member, and detection markers that allow for a controlled and friction-assisted rotation to define a preliminary and precise initial position without bouncing, thereby avoiding noise and ensuring accurate reset.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a mechanical limiting structure is used to prevent infinite rotation during reset, then the light fixture can be limited to a specific position, but repeated collisions with the limiting structure generate noise and cause instability
Solution Approach 1:
The patent applies prior cushioning by positioning the elastic member (spring) in advance between the pivot member and the limiting structure. When the pivot member rotates and approaches the limiting position, the elastic member deforms elastically to absorb the impact energy, preventing direct rigid collision. This cushioning mechanism eliminates the harmful collision noise while maintaining reliable position limiting during the reset process.
2Productivity
If the support arm rotates at certain speed to reach the limiting structure, then the reset process is efficient, but the collision generates bouncing and repeated noise
Solution Approach 1:
The elastic member is pre-installed in the impact path between the pivot member and limiting structure. During high-speed rotation, when the pivot member approaches the limiting position, the elastic member deforms to absorb impact energy, preventing the bouncing that causes repeated collisions and noise. This allows efficient high-speed resetting without the harmful effects of collision.
Solution Approach 2:
The patent converts the harmful collision impact into beneficial elastic deformation energy storage and release. The kinetic energy from high-speed rotation that would normally cause harmful bouncing and noise is instead absorbed and dissipated through the elastic deformation of the spring, transforming a harmful effect into a beneficial cushioning mechanism that enables fast resetting without 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 reduces noise and enhances reset accuracy by preventing collisions and ensuring stable positioning, maintaining system stability and precision during the reset process.
Implementation Method 1
an elastic member capable of resisting against the shifter lever... the elastic member deforms to the second rotation direction
Data Source
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AI summary
The present invention discloses a low-noise light fixture reset structure and a control method thereof. The low-noise light fixture reset structure includes a pivot shaft and a pivot member rotatably connected to the pivot shaft, and the pivot shaft is fixedly connected with a drive wheel and is sleeved with a shifter lever; a first detection marker is provided on the shifter lever, and a first detector that detects the first detection marker is provided on the pivot member; a first limiting post that limits the shifter lever is also provided on the drive wheel, the pivot member is further provided with an elastic member capable of resisting against the shifter lever and a second limiting post that limits the shifter lever, and the second limiting post, the elastic member, and the first limiting post do not interfere with each other during a relative movement between the pivot member and the pivot shaft. Since the second limiting post is not required to touch the shifter lever resisted against by the first limiting post, the pivot member do not bounce back under the action of a reaction force, thereby avoiding noise like "click, click, click..." generated by multiple times of collision and creating a quieter reset process.