Rotatable Lid Wire Harness Protector for Conduit Diameters
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Solution Overview
Problem
Existing wire harness protectors require multiple types of lids for accommodating convoluted conduits of different sizes, leading to increased component counts and manufacturing costs.
Innovation Solution
A protector design with a main body and a lid that can be rotated 180 degrees, featuring ribs on both sides to accommodate large and small-diameter convoluted conduits, allowing a single type of protector to fit various conduit sizes by adjusting rib positioning and pitch.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If multiple types of lids are provided for different convoluted conduit sizes, then each conduit size can be securely accommodated, but the number of components and manufacturing costs increase
Solution Approach 1:
The lid is designed with two different engagement portions that can accommodate both large-diameter and small-diameter convoluted conduits. By rotating the lid 180 degrees, either engagement portion can be positioned to engage with the convoluted conduit, making a single lid type universal for multiple conduit sizes.
Solution Approach 2:
The lid is made rotatable about a longitudinal axis, allowing dynamic repositioning between two orientations. This rotational freedom enables the lid to adapt its engagement portion configuration based on the conduit size being installed, transforming a static single-function component into a dynamic multi-function component.
2Device complexity
If a single lid type is used for all conduit sizes, then the number of components is reduced, but the ability to securely hold different sized conduits is compromised
Solution Approach 1:
Different portions of the lid have different engagement characteristics - one engagement portion is designed with dimensions suitable for large-diameter conduits while the other is designed for small-diameter conduits. This local differentiation within a single component allows each area to be optimized for its specific conduit size while maintaining overall component unity.
Solution Approach 2:
The lid's engagement structure is segmented into two distinct engagement portions positioned at opposite ends. Each portion can independently engage with convoluted conduits of different sizes, allowing the single lid to function as if it were two different lid types through rotational repositioning.
3Reliability
If ribs are provided on the main body for large-diameter conduits, then large conduits can be secured, but small-diameter conduits cannot be securely held
Solution Approach 1:
The functionality of multiple lids (one for large conduits, one for small conduits) is merged into a single lid by providing two different engagement portions on opposite ends. This merging allows the single lid to perform the functions of multiple specialized lids through rotational repositioning.
Solution Approach 2:
The lid serves multiple functions by accommodating both large-diameter and small-diameter convoluted conduits. The two engagement portions provide different engagement characteristics, making the single lid universal for different conduit sizes rather than requiring size-specific lids.
Data Source
AI summary
A protector that accommodates convoluted conduits having different diameters includes a main body and a lid that covers an upper surface opening of the main body. A convoluted conduit engagement portion having ribs that fit troughs of a large-diameter convoluted conduit extends from a bottom wall on one end side in the length direction of the main body to internal surfaces of two side walls. A large-diameter convoluted conduit engagement portion having ribs that fit the troughs of the large-diameter convoluted conduit is provided on an internal surface on one end side in the length direction of the lid, and a small-diameter convoluted conduit engagement portion having ribs that fit troughs of a small-diameter convoluted conduit is provided on an internal surface of the other end side. The lid is rotated by 180 degrees to correspond to an outer diameter of a convoluted conduit and connected to the main body.