Accessory Shoe Member Loop Structure for Stress Distribution
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Solution Overview
Problem
Existing imaging apparatus accessory shoes deform under stress when external accessory devices, especially larger ones, are tilted backward due to concentrated stress on engagement portions, leading to structural weakness.
Innovation Solution
The accessory shoe is designed with a base member and an accessory shoe member featuring engagement portions perpendicular to the attachment direction, fastening holes, and fastening members, with the accessory shoe member formed by bending a plate metal material into a loop shape to distribute stress and reduce deformation risk.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If the accessory shoe member is made with a simple structure, then the manufacturing is easier and cost is lower, but the stress concentration causes deformation under load
Solution Approach 1:
The accessory shoe member is formed by bending a plate metal material into a loop shape, creating a curved structural form that naturally distributes stress more evenly throughout the member, preventing stress concentration at specific points while maintaining manufacturing simplicity
Solution Approach 2:
The engagement portions are formed extending in a direction perpendicular to the attachment direction, adding a dimensional aspect to stress distribution that prevents concentration on the front side of the engagement portions
2Device complexity
If the accessory shoe member uses a simple plate structure, then the device complexity is reduced, but the structural integrity fails under tilting force
Solution Approach 1:
Bending the plate metal material into a loop shape creates a structurally superior form that resists deformation under tilting forces, improving reliability without significantly increasing device complexity
Solution Approach 2:
The accessory shoe member combines plate metal material with a specific loop configuration, creating a composite structural solution that achieves high reliability while maintaining relatively simple device complexity
3Adaptability or versatility
If the engagement portions are positioned to accommodate the accessory device, then the functionality is achieved, but stress concentrates on the front side causing deformation
Solution Approach 1:
The engagement portions extend in a direction perpendicular to the attachment direction, distributing the stress from tilting forces across a larger area and preventing concentration on the front side, thereby maintaining stability while preserving adaptability
Data Source
AI summary
In an accessory shoe member placed on top of a base member, a pair of engagement portions is formed in a first direction perpendicular to an attachment direction of an external accessory device, and a plurality of fastening holes is formed side by side in the first direction. A plurality of fastening members is inserted into the plurality of fastening holes with the accessory shoe member placed on top of the base member, thereby fastening the base member and the accessory shoe member to an imaging apparatus. In the accessory shoe member, a joining portion joining the pair of engagement portions is formed. The accessory shoe member is formed by bending a plate metal material into a loop shape so that a joint is located between the plurality of fastening holes.