Camera Mount Terminals Multi-Plane Arrangement
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Solution Overview
Problem
The existing image capturing apparatus and accessories face challenges in stable power supply and communication due to increased contact impedance and wear of terminals, leading to potential malfunctions and short circuits, especially with frequent mounting and dismounting operations.
Innovation Solution
The apparatus employs a two-stage mount mechanism with terminals held at different positions in the optical-axis direction, reducing wear and minimizing inter-terminal contact, and strategically arranges power and communication terminals to prevent short circuits and ensure stable operations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If terminals are arranged in a single plane for power supply and communication, then the structure is simple, but contact impedance increases and wear occurs during frequent mounting and dismounting
Solution Approach 1:
The patent transitions from a two-dimensional terminal arrangement (single plane) to a three-dimensional arrangement by dividing terminals into multiple planes along the optical axis direction. This dimensional change reduces contact impedance and wear during mounting/dismounting operations while maintaining structural simplicity through systematic organization.
2Area of stationary object
If multiple communication systems share the same terminal plane, then the device size is reduced, but short circuits between terminals may occur
Solution Approach 1:
The patent segments terminals belonging to different communication systems onto different planes along the optical axis. This segmentation physically separates terminals that could potentially short-circuit, eliminating the harmful interaction while maintaining a compact overall structure through vertical stacking rather than horizontal expansion.
3Area of stationary object
If terminals are positioned close together to reduce mount size, then the device is more compact, but terminal wear and contact impedance increase
Solution Approach 1:
The patent resolves the conflict between compactness and reliability by utilizing the optical axis direction (third dimension) to separate terminals. This allows terminals to be closely positioned in the radial direction for compactness while maintaining adequate spacing in the axial direction to reduce wear and contact impedance.
4Reliability
If power supply terminals and communication terminals are arranged independently, then communication stability is improved, but the mount structure becomes more complex
Solution Approach 1:
The patent organizes power supply terminals and communication terminals on different planes along the optical axis, achieving independent arrangement that ensures communication stability. The systematic planar organization maintains structural clarity and avoids excessive complexity despite the multi-plane configuration.
Data Source
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AI summary
There is provided an image capturing apparatus on which, and from which, an accessory is mountable and dismountable. The image capturing apparatus includes a plurality of terminals (1001-1012) disposed in a circumferential direction of a mount (A) and configured to be used in electrical connection, and a terminal holder (105). Each of the plurality of terminals is electrically connected to a corresponding terminal of the accessory. A first terminal (1008) of the terminals (1001-1012) used in communication at a first voltage level and a second terminal (1009) of the terminals (1001-1012) used in communication at a second voltage level lower than the first voltage level are disposed on the same stage of the terminal holder. The second terminal is a terminal connected to ground via a first resistor. The first terminal is disposed adjacent to the second terminal.