Electric Junction Box Harness Guide with Elastic Spurtle
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional electric junction boxes face challenges in achieving watertight performance while accommodating harnesses with various diameters, as the guide portion's fixed diameter either allows water ingress with smaller harnesses or fails to fit larger ones.
Innovation Solution
An electric junction box design featuring a tubular guide portion with elastically deformable bending portions and a spurtle that adjusts outward as the harness diameter increases, ensuring a tight seal and accommodating different harness diameters.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the guide portion diameter is formed to fit the harness with a large diameter, then the harness with large diameter can be accommodated, but the gap between the guide portion and the harness with a small diameter is widened causing water penetration
Solution Approach 1:
The guide portion is designed with a movable spurtle that can dynamically adjust its position along the axial direction. When a harness with a small diameter is inserted, the spurtle moves to contact the harness, closing the gap and preventing water penetration. This dynamic adjustment allows the guide portion to maintain watertight performance while accommodating harnesses of various diameters.
2Reliability
If the guide portion diameter is formed to fit the harness with a small diameter to prevent water penetration, then watertight performance is improved, but the harness with a large diameter cannot be passed through
Solution Approach 1:
The spurtle is designed to move along the axial direction of the guide portion based on the diameter of the inserted harness. When a harness with a large diameter is inserted, the spurtle moves to a position where it does not contact the harness, allowing smooth passage. When a harness with a small diameter is inserted, the spurtle moves to contact the harness and close the gap, ensuring watertight performance.
Solution Approach 2:
The guide portion automatically adjusts the spurtle position according to the harness diameter without requiring external control. The spurtle moves on its own along the axial direction to either contact or not contact the harness based on the harness diameter,实现ing self-adjustment for different harness sizes.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The design enhances watertight performance by maintaining a seal with harnesses of varying diameters, preventing water ingress and allowing easy passage of both thin and thick harnesses through the guide portion.
Implementation Method 1
a bending portion provided with at least one of the plurality of wall portions, the bending portion being formed between the spurtle and the box body elastically deformable in the outside direction of the guide portion
Data Source
Figure 1
Figure 2~3
Figure 4~5
AI summary
There is provided an electric junction box 1 for ensuring a watertight performance even when a harness with various thickness is applied, including a box body 2, a tubelar guide portion 6 projecting from the box body 2 and guiding a harness 7 out of the box body 2, wherein the guide portion 6 is provided with a plurality of wall portions 60, 63, divided along the axial direction of the guide portion 6, and at least one of the wall portions 60, 63 is provided with a movable spurtle 65 as a spurtle and a bending portion 64 formed between the movable spurtle 65 and the box body 2 elastically deformable in the outside direction of the guide portion 6, and wherein the inner diameter of the guide portion 6 in neutral state that the bending portion 64 is not in elastic deformation is formed to fit the harness 7 with a minimum outer diameter, and the increase of the outer diameter of the harness 7 leads the bending portion 64 to bend such that the movable spurtle 65 is pushed outward.