Eyecup Accessory Attachment with Discrete Elastic Engagement
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Solution Overview
Problem
Existing optical apparatuses, such as digital cameras, face challenges in easily attaching and detaching eyecup accessories due to the design of the eyecup, which often requires elastic parts that can accidentally disengage.
Innovation Solution
The optical apparatus is designed with a non-elastic eyepiece frame and an eyecup featuring an elastic member. The eyecup accessory is fixed using first and second engagement members that engage with corresponding fixing members on the eyecup and eyepiece frame, respectively, ensuring secure attachment and easy detachment.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the eyecup accessory is fixed by elastic parts around the entire circumference of the flange portion, then the accessory is securely held in place, but it becomes difficult to attach and detach the accessory and may accidentally disengage
Solution Approach 1:
The fixing structure is divided into multiple discrete engagement positions around the flange portion instead of continuous elastic contact. The elastic member includes multiple engagement protrusions that can engage with corresponding grooves at specific positions, allowing the accessory to be securely fixed at discrete points while maintaining ease of attachment and detachment.
Solution Approach 2:
The elastic member is designed with different properties at different locations: engagement protrusions at specific positions for secure fixing, and a flange portion with light-blocking function. This local differentiation allows the accessory to be firmly held where needed while maintaining operational ease elsewhere.
2Reliability
If the eyecup accessory is fixed by elastic parts, then the accessory can be held in place, but the accessory is likely to disengage accidentally
Solution Approach 1:
The fixing mechanism uses multiple discrete engagement positions around the flange portion rather than continuous elastic contact. The elastic member includes multiple engagement protrusions that engage with corresponding grooves at specific positions, providing stable fixation while reducing the risk of accidental disengagement through distributed contact points.
Solution Approach 2:
The elastic member is pre-formed with engagement protrusions positioned to automatically engage with the grooves on the accessory when attached. This preliminary configuration ensures proper alignment and secure engagement before the accessory is fully installed, preventing accidental disengagement.
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
This design allows for easy and secure attachment of eyecup accessories to the optical apparatus, reducing the risk of accidental detachment and ensuring that the accessory remains in place even when a neck strap is used.
Implementation Method 1
an elastically deformable eyecup accessory with a large flange portion is attached while it is stretched and held by the flange portion of the eyecup
Data Source
AI summary
An optical apparatus is attachable to and detachable from an accessory. The optical apparatus includes a non-elastic member with an eyepiece frame, and an eyecup fixed to the eyepiece frame and including an elastic member. The elastic member includes a first fixing member configured to fix the accessory and provided to at least three outer circumference side surfaces. The eyepiece frame includes a second fixing member configured to fix the accessory and provided to an area that does not face the at least three outer circumference side surfaces of outer circumference side surfaces. The first fixing member and the second fixing member fix the accessory in a case where the accessory is attached to the optical apparatus.