Orthogonal Shield Shell Fixing Portion for Screw Assembly
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Solution Overview
Problem
Existing shield shell units face difficulties in operability due to parallel screwing direction, hindrance from the shield member, poor visibility during vertical attachment, complex operation steps, and high part count, leading to increased costs.
Innovation Solution
A shield shell unit with a shell main body and a fixing portion that projects orthogonally to the attachment direction, featuring holes for screw passage, an elastic portion for secure attachment, and a recessed receiving portion to position the elastic portion, allowing for improved screwing alignment and reduced part count.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If the shield shell is attached to the attached portion with the screwing direction in parallel to the shield member extension direction, then the attachment structure is simple, but the screwing operation is difficult due to hindrance from the shield member
Solution Approach 1:
The patent changes the screwing direction from parallel to the shield member extension direction to perpendicular. The fixing portion extends in the direction intersecting the attachment direction, allowing screws to be inserted from the side rather than from the end, thus avoiding the hindrance caused by the shield member while maintaining structural simplicity
2Volume of moving object
If the attached portion is arranged in the vertical direction, then the attachment structure is compact, but the lower side is difficult to be optically observed, causing poor operability and risk of screw dropping
Solution Approach 1:
By extending the fixing portion in the direction intersecting the attachment direction (perpendicular direction), the screw insertion point is moved to the side of the shield shell rather than at the bottom. This allows operators to visually access the screw insertion area even when the attached portion is vertically arranged, eliminating the observation difficulty while maintaining compact vertical arrangement
3Reliability
If multiple screw-fastening portions are provided, then the attachment is firm, but the number of operation steps increases, making the operation complicated and increasing part count and cost
Solution Approach 1:
The patent merges multiple screw-fastening functions into a single fixing portion that extends in the intersecting direction. This single fixing portion can accommodate multiple screws arranged along its length, providing firm attachment through multiple connection points while maintaining a unified structural element, thereby reducing the total number of separate parts and simplifying the attachment structure
Data Source
AI summary
A shield shell unit includes a shield shell that is attached to an end portion of a shield member for covering a wire, and an attached portion that is attached to the shield shell. The shield shell includes a shell main body, and a fixing portion which projects from the shell main body and is mounted on the attached portion in a direction of intersecting with a direction of attaching the shield shell to the attached portion when the shield shell is attached to the attached portion. The fixing portion and the attached portion have holes which are communicated with each other for passing a screw member therethrough when the fixing portion is mounted on the attached portion.