Concentric Grommet Passages for Adding Wires Without Interference
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing grommets face challenges when passing additional electric wires through them, as the previously passed wires can interfere, leading to damage and making the process cumbersome.
Innovation Solution
A grommet design featuring a tubular inner tube and a surrounding outer tube, where the space between them forms a first path for the first electric wire and the internal space of the inner tube forms a second path for the second electric wire, allowing smooth passage without interference.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If multiple tube portions are provided in parallel to allow additional wires to pass through, then the ability to pass additional wires is improved, but the size of the grommet is unnecessarily increased
Solution Approach 1:
The invention employs a nested structure where an inner tube is placed inside an outer tube. The inner tube provides a first passage for initially passed wires, while the outer tube provides a second passage for additional wires. This nesting arrangement allows multiple wires to pass through the grommet without increasing its external size, as the passages are arranged concentrically rather than in parallel side-by-side configurations.
Solution Approach 2:
Instead of arranging multiple passage openings in parallel within the same plane (two-dimensional arrangement), the invention transitions to a three-dimensional arrangement by placing passages at different radial positions (inner and outer tubes). This dimensional change allows multiple wires to pass through without increasing the grommet's external dimensions, effectively utilizing the radial dimension to create separate passage routes.
2Volume of moving object
If a single tube portion is used, then the size of the grommet is kept compact, but the previously passed wire interferes with the passage of additional wires
Solution Approach 1:
The grommet is segmented into two distinct tubular structures: an inner tube and an outer tube. Each tube provides a separate passage for electric wires. This segmentation prevents interference between initially passed wires and additional wires, as they travel through different physical channels (inner tube vs. outer tube), thereby facilitating smooth passage of additional wires without obstruction.
3Stability of the object's composition
If additional wires are passed through by pushing aside previously passed wires, then the grommet structure is maintained, but the previously passed wires may be damaged
Solution Approach 1:
By dividing the grommet into inner and outer tubes with separate passages, the invention eliminates the need to displace previously passed wires when inserting additional wires. Each passage maintains its own wire independently, preventing mechanical stress and potential damage to existing wire connections while preserving the overall grommet structure.
Data Source
AI summary
Provided is a grommet suitable for when allowing an additional electric wire to pass through the grommet. A grommet (10, 10A, 10B) enables electric wires (31, 32) to pass therethrough. The grommet (10, 10A, 10B) comprises a tubular inner tube (12, 12A, 12B) and a tubular outer tube (11) that is provided around the inner tube (12, 12A, 12B) so as to surround the inner tube (12, 12A, 12B). The space between the inner tube (12, 12A, 12B) and the outer tube (11) forms a first path (16) through which the first electric wires (31) of the electric wires (31, 32) can pass. The internal space of the inner tube (12, 12A, 12B) forms a second path (17, 17A, 17B) through which the second electric wires (32) of the electric wires (31, 32) can pass.