Rotatable Camera Mount Contact Pin Angular Range Reduction
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Solution Overview
Problem
The existing camera mount systems with molded mounts and plate springs face challenges in reducing the angular range occupied by contacts, leading to increased camera size, and suffer from high wiring resistance and noise interference affecting the accessory's functionality.
Innovation Solution
The camera mount system is designed to shift from a first state to a second state, where the accessory-side bayonet tooth is inserted between camera-side bayonet teeth, with specific contact pin configurations to minimize the angular range and reduce wiring resistance, and incorporates a voltage conversion unit to manage communication voltages and power supply efficiently.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Weight of stationary object
If molded mounts with plate springs are used to reduce camera weight and thickness, then the weight and thickness are reduced, but the angular range occupied by contacts increases leading to larger camera size
Solution Approach 1:
The contact pins are designed to rotate relative to the mount during the coupling process. In the first state (before coupling), the contact pins are positioned at a first angular position. During relative rotation between camera-side and accessory-side mounts, the contact pins rotate to a second angular position in the coupling completion state. This dynamic repositioning allows the contact pins to occupy a smaller angular range at critical moments, enabling reduced camera size while maintaining weight reduction benefits from molded mounts and plate springs.
2Area of stationary object
If contact pins are disposed to minimize angular range, then camera size is reduced, but wiring resistance increases affecting power supply and communication
Solution Approach 1:
The contact pins are pre-positioned at a first angular position in the first state before coupling occurs. This preliminary positioning allows wiring to be routed optimally before the pins rotate to their final positions. By preparing the contact pin positions in advance, the system can achieve both minimal angular range occupation (reducing camera size) and optimal wiring paths (minimizing wiring resistance losses) for power supply and communication signals.
3Area of stationary object
If contact pins are repositioned during coupling, then camera size is reduced, but noise interference increases affecting accessory functionality
Solution Approach 1:
The system is designed to complete the relative rotation between camera-side and accessory-side mounts before the contact pins establish final electrical contact. This sequencing provides cushioning by ensuring mechanical coupling and positioning are established first, creating a stable environment before electrical signals are fully transmitted. This reduces noise interference affecting accessory functionality while maintaining the benefits of reduced camera size from dynamic contact pin repositioning.
Data Source
AI summary
The present invention provides the following camera. A first camera-side contact pin is a pin corresponding to detection of a signal change caused by coupling of a camera accessory. A second camera-side contact pin is a pin corresponding to supply of power for communication with the coupled camera accessory. A third camera-side contact pin is a pin corresponding to supply of a driving force to an actuator of the camera accessory. The first, second, and third camera-side contact pins are disposed in such a manner that, when a camera-side mount shifts from a first state to a second state, the third camera-side contact pin contacts first and second accessory-side contact surfaces, the second camera-side contact pin contacts the first accessory-side contact surface, and the first camera-side contact pin does not contact the second and third accessory-side contact surfaces.