Wire Harness Clamp With Internal Shield Grounding Protrusion
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional band clamps struggle to ground electromagnetic shielding components when they are arranged inside exterior cover portions of wire harnesses, as they fail to establish electrical contact with the shield portions.
Innovation Solution
A clamp with an electrically conductive protrusion that can be inserted into a tubular member to contact and electrically connect with a shield portion inside the exterior cover, allowing grounding even when the shield portion is not exposed, along with a contact portion that connects the protrusion to the vehicle body for grounding.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a conventional band clamp is wrapped around the exterior cover portion, then it can ground the shield portion when the shield is exposed, but it cannot establish electrical contact with the shield portion when the shield is arranged inside the exterior cover portion
Solution Approach 1:
The clamp is divided into distinct functional segments: an outer clamp body that contacts the exterior cover portion, and an inner protrusion that extends through the exterior cover to contact the shield portion. This segmentation allows each part to perform its specific function - the outer body provides structural support and external contact, while the inner protrusion establishes the critical electrical connection with the shield portion inside the cover.
Solution Approach 2:
The protrusion acts as an intermediary element that bridges the gap between the exterior cover portion and the shield portion inside. It transmits both mechanical force and electrical connection from the externally accessible clamp body to the internally located shield portion, enabling grounding without requiring the shield to be exposed.
2Object-affected harmful factors
If the shield portion is arranged inside the exterior cover portion for protection, then electromagnetic shielding is maintained, but the band clamp cannot contact the shield portion for grounding
Solution Approach 1:
The solution transitions from a two-dimensional external wrapping approach to a three-dimensional penetration approach. The protrusion extends through the thickness dimension of the exterior cover portion, creating a direct path from the external clamp body to the internal shield portion. This dimensional transition enables electrical contact while maintaining the protective enclosure.
Solution Approach 2:
The clamp structure employs a nested configuration where the protrusion is contained within the clamp body, which in turn contacts the exterior cover portion. This nested arrangement allows the smaller protrusion element to be precisely positioned through the cover to contact the shield portion, while the outer clamp body provides the mounting interface on the exterior surface.
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
Enables easy grounding of shield portions inside exterior cover portions, ensuring effective electromagnetic shielding by establishing a stable electrical connection between the shield and the vehicle body.
Implementation Method 1
a contact portion arranged between an electrically conductive attachment target and the protrusion, in which the contact portion is electrically conductive, comes into contact with the attachment target, and electrically connects the protrusion and the attachment target to each other
Data Source
AI summary
A clamp (31) according to one aspect of the present disclosure includes an electrically conductive protrusion (32) that is to be inserted into a tubular member (21) from outside of the tubular member (21), the tubular member (21) including a tubular exterior cover portion (22) through which at least one electric wire (11) passes and an electrically conductive shield portion (23) that covers an inner peripheral surface of the exterior cover portion (22). Also, the clamp (31) includes a contact portion (33) arranged between an electrically conductive attachment target (100) and the protrusion (32). The contact portion (33) is electrically conductive, comes into contact with the attachment target (100), and electrically connects the protrusion (32) and the attachment target (100) to each other.