External Power Connection Layout for Electrical Junction Boxes
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Solution Overview
Problem
Conventional electrical junction boxes have restricted component layouts due to the power feeding structure, limiting flexibility in housing arrangements.
Innovation Solution
An electrical junction box design featuring a cylindrical frame with a circuit branch component and internal conductive members that allow for external power supply and load connections, along with a clip engagement mechanism for booster cables, providing a degree of freedom in component layout and reducing peripheral overload.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Volume of moving object
If the power feeding structure is housed inside the housing, then the structure is compact and integrated, but the component layout freedom is restricted
Solution Approach 1:
The power feeding structure is segmented into two parts: the terminal fitting remains inside the housing for integration, while the electrical connection structure is extracted outside the housing. This segmentation allows the housing to maintain its compact integrated form while the external connection structure provides layout freedom for component arrangement.
Solution Approach 2:
The electrical connection structure is positioned in a different spatial dimension (outside the housing) rather than being constrained within the housing volume. This dimensional relocation resolves the conflict between housing integration and component layout flexibility, as components can now be arranged in the external space without compromising the housing's compact design.
2Volume of moving object
If the electrical connection structure is placed inside the housing, then the structure is compact, but the attaching/detaching work space is insufficient
Solution Approach 1:
The electrical connection structure is extracted from the housing interior to the exterior space. This extraction creates sufficient attaching/detaching work space around the connection points, allowing easy access for connecting and disconnecting the clip and electrical wires, while the housing itself remains compact.
3Adaptability or versatility
If the circuit branch component is disposed outside the frame, then the component layout freedom is improved, but the device complexity increases
Solution Approach 1:
The circuit branch component is merged with the electrical connection structure that is already positioned outside the housing. This merging approach allows the circuit branch component to be disposed outside the frame with improved layout freedom while avoiding additional structural complexity, as it integrates with the existing external connection architecture rather than requiring separate mounting arrangements.
Data Source
AI summary
What is included is a circuit branch component disposed outside a cylindrical portion and outside the frame and having a conductive circuit branch member, in which a conductive power-side electrical connection structure is provided outside the frame, the conductive power-side electrical connection structure being capable of physically and electrically connecting a power supply-side terminal fitting at an end of a power supply-side electric wire, a second electrical connection portion of an internal conductive member, and a power supply connection portion of the circuit branch member, and a power supply-side electrical connection structure capable of causing a clip at an end of a booster cable to be engaged is provided, and an attaching/detaching work space for attaching and detaching the clip to and from the power supply-side electrical connection structure is provided between the frame and the power supply-side electrical connection structure.