Projector Lens Lock Mechanism for Vibration Stability
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Solution Overview
Problem
Projectors experience changes in projection settings due to hits or vibrations, causing shifts in optical components such as zoom and focus adjusting rings, which affect the size, focus, and position of the projected image.
Innovation Solution
A projector design incorporating a lens with adjusting members, a lock member, and fixing members that securely fasten the adjusting members to prevent shifting due to hits or vibrations, using a combination of bases and fixing members to maintain the projection settings.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the adjusting members (zoom adjusting ring and focus adjusting ring) are made adjustable for user operation, then the ease of operation is improved, but the stability of the projection setting deteriorates due to shifts caused by hits or vibrations
Solution Approach 1:
The lock member is pre-configured with a locking structure that engages with the adjusting member before any vibration or hit can cause shifting. The fixing member is预先 installed to secure the lock member to the base, creating a preliminary stable state that prevents subsequent unwanted movements during operation
Solution Approach 2:
The lock member acts as an intermediary between the adjusting member and the base. It provides a stable interface that transfers and distributes forces, preventing direct transmission of vibration or impact forces to the adjusting member while still allowing intentional user adjustments
2Stability of the object's composition
If the adjusting members are secured tightly to prevent shifting, then the stability of projection setting is improved, but the ease of operation deteriorates due to difficulty in making adjustments
Solution Approach 1:
The locking mechanism is designed to be dynamic rather than static. The lock member can transition between locked and unlocked states, allowing the system to switch between stable (locked) and adjustable (unlocked) modes. This enables the adjusting members to be securely fixed during operation while remaining easily adjustable when needed
Solution Approach 2:
The lock member can be temporarily disengaged (discarded from the locked position) to allow adjustments, and then re-engaged (recovered to the locked position) to secure the settings. This reversible locking mechanism allows users to easily switch between adjustment and stabilization states without permanent modification
3Reliability
If the lens and adjusting members are fixed securely to prevent shifting from hits or vibrations, then the reliability of projection setting is improved, but the device complexity increases due to additional fixing components
Solution Approach 1:
The lock member combines multiple functions into a single component: it locks the adjusting member in place, provides a mounting interface for the fixing member, and distributes mechanical forces. The fixing member integrates the locking and securing functions, reducing the total number of separate parts while maintaining reliability
Solution Approach 2:
The lock member serves multiple purposes: it acts as a locking element, a structural support, and a force distribution component. The fixing member similarly performs both securing and stabilizing functions. This multi-functionality reduces the need for separate dedicated components for each function, simplifying the overall device structure
Data Source
AI summary
A projector includes a lens, a first base, a lock member, a second base and a first fixing member. The lens includes at least one adjusting member. The first base is disposed with respect to the lens. The lock member is disposed on the at least one adjusting member. The second base is disposed with respect to the lock member. When the first fixing member fixes the second base to the first base, the second base pushes the lock member, such that the lock member forces the at least one adjusting member on the lens tightly.