Removable Eyecup Mounting Mechanism for Camera Bodies
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Solution Overview
Problem
High-end optical apparatuses require a removable eyecup with a secure and smooth mounting mechanism that maintains a high-quality mounted state without rattling, ensuring reliable operation and long-term precision.
Innovation Solution
The eyecup features an eye rubber, a fixing member, a movable member held by the fixing member, and an elastic member that presses the movable member against the fixing member, with a mounting member sandwiched between them, facilitating a bayonet-style mounting method using engagement claws and a pressing force to secure the eyecup to the camera body.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a removable eyecup configuration is provided, then ease of operation is improved, but mounting reliability deteriorates
Solution Approach 1:
The patent employs a dynamic mounting mechanism where the movable member can transition between mounted and removed states. The elastic member provides continuous pressing force to maintain secure mounting during operation, while allowing easy removal when needed. This dynamic system resolves the contradiction by enabling both ease of operation and mounting reliability through controlled mobility.
Solution Approach 2:
The eyecup is divided into separable components: a fixed member attached to the camera body, a movable member that interfaces with the fixed member, and an elastic member that provides mounting force. This segmentation allows the eyecup to be easily mounted and removed while maintaining secure connection during use, addressing both ease of operation and mounting reliability.
2Reliability
If a secure mounting structure is provided, then reliability is improved, but device complexity deteriorates
Solution Approach 1:
The patent combines multiple functions into an integrated mounting mechanism: the elastic member simultaneously provides pressing force, enables secure mounting, and allows easy removal. The movable and fixed members are designed as complementary components that work together as a unified system. This merging reduces overall complexity while maintaining mounting security.
Solution Approach 2:
The elastic member automatically provides the necessary pressing force to secure the mounting without requiring additional fastening operations. The mounting mechanism is self-regulating, where the elastic force naturally maintains secure connection while allowing easy removal when the user applies gentle force. This self-service approach simplifies the mounting structure while ensuring reliability.
3Ease of operation
If a bayonet-style mounting method is used, then ease of operation is improved, but manufacturing precision deteriorates
Solution Approach 1:
The patent employs engagement claws with specifically designed geometric parameters that enable smooth bayonet-style rotation while maintaining precise engagement. The shape and dimensions of the claws are optimized to guide the mounting motion and ensure accurate positioning. This parameter optimization resolves the contradiction by enabling easy operation without sacrificing manufacturing precision.
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 configuration ensures a smooth and secure mounting operation, maintaining a high-quality mounted state without rattling, even in long-term use, enhancing the reliability and precision of the optical apparatus.
Implementation Method 1
an elastic member that presses the movable member aga inst the fixing member to fix the movable member to the fixing member
Implementation Method 2
a mounting member provided in the camera body is fitted between the fixing member and the movable member against a pressing force of the elastic member
Data Source
Figure 1
Figure 2A~2B
Figure 3
AI summary
An eyecup of an eyecup mounting mechanism includes an eye rubber, a fixing member that holds the eye rubber in a predetermined position, a movable member held movably by the fixing member, and an elastic member that presses the movable member against the fixing member to fix the movable member to the fixing member, and wherein a mounting member provided in the camera body is fitted between the fixing member and the movable member against a pressing force of the elastic member, and the mounting member is sandwiched by the fixing member and the movable member, for the purpose of providing a highly reliable eyecup mounting mechanism and an optical apparatus including the eyecup mounting mechanism.