Shock Absorber for Projection Device Vibration Control
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Solution Overview
Problem
Current projectors with color wheels experience vibration and noise due to the transmission of rotational vibrations from the color wheel to the optical machine casing, affecting optical performance and generating noise.
Innovation Solution
A shock absorber is introduced, comprising a first and second casing, a frame, and a buffer element, where the buffer element is positioned between the casings and the frame to absorb vibrations and reduce noise, with the casings' pressing portions sandwiching the frame to fix its relative position.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stability of the object's composition
If the color wheel is fixed on the frame by locking and screws, then the structural stability is improved, but the vibration transmission to the casing increases
Solution Approach 1:
A buffer element is introduced as an intermediary component between the frame and the first casing. This buffer element absorbs and reduces the vibration transmitted from the rotating color wheel to the casing, thereby resolving the contradiction between maintaining structural stability and reducing harmful vibration transmission.
Solution Approach 2:
The buffer element is pre-installed between the frame and the casing to provide cushioning before vibration occurs. This beforehand cushioning prevents vibration from being transmitted to the casing during the rotation of the color wheel, while still allowing the frame to remain stably fixed.
2Productivity
If the color wheel rotates to generate color mixing, then the picture generation function is achieved, but noise is generated due to vibration transmission
Solution Approach 1:
The buffer element serves as a mediator that allows the color wheel to rotate freely for picture generation while simultaneously absorbing the vibrations that would otherwise be transmitted to the casing and converted into noise. This resolves the contradiction between achieving the picture generation function and minimizing noise.
3Stability of the object's composition
If the frame is rigidly fixed to reduce vibration, then the structural stability is improved, but the adaptability for assembly and disassembly decreases
Solution Approach 1:
The connection between the frame and the first casing is made dynamic through the buffer element. The buffer element allows the structure to adapt between a rigid state (when assembled) for vibration reduction and a easily separable state (when disassembled), thereby resolving the contradiction between structural stability and assembly adaptability.
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 shock absorber effectively reduces vibration transmission and noise by using a buffer element to absorb shocks between the frame and the casings, enhancing optical performance and reducing noise levels.
Implementation Method 1
the buffer element is disposed between the first pressing portion and the first portion of the frame, and between the second pressing portion and the first portion of the frame... the buffer element may provide buffering to the portion between the frame and the first casing, and the portion between the frame and the second casing, so as to provide good shock absorption and noise reduction
Data Source
AI summary
A shock absorber, including a first casing, a second casing, a frame, a vibrator, and a buffer element, is provided. The first casing includes a first pressing portion. The second casing is detachably fixed to the first casing and includes a second pressing portion. The frame includes a first portion and a second portion, and the first portion is located between the first pressing portion and the second pressing portion. The vibrator is fixed to the second portion of the frame. The buffer element is disposed between the first pressing portion and the first portion of the frame, and between the second pressing portion and the first portion of the frame. The first pressing portion and the second pressing portion press against the buffer element to sandwich the first portion of the frame. A projection device with the shock absorber is also provided.