Vehicle Grab Handle Adapter With Plastic Buckling Lines
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Solution Overview
Problem
Existing adapters for grab handles in vehicles are complex in design and require significant installation space, failing to efficiently manage deformation behavior under both tensile and compressive loads effectively.
Innovation Solution
A simplified adapter design featuring plastic formations that modify bending strength in multiple directions, allowing independent adjustment of tensile and compressive load behaviors, with angled attachment and retaining portions and recesses for controlled deformation during accidents.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a multipart adapter device with deformation element and retaining element is used, then the deformation behavior under tensile and compressive loads is improved, but the device complexity increases
Solution Approach 1:
The patent combines the deformation element and retaining element into a single integrated adapter component. The retaining portion features plastic formations that provide both retention functionality and controlled deformation capability in one piece, eliminating the need for separate multipart assemblies while maintaining the desired load-dependent deformation behavior.
Solution Approach 2:
The patent introduces plastic formations with specific geometric features at localized regions of the retaining portion. These plastic formations create predetermined buckling lines with specific bending strengths in different directions, allowing controlled deformation in particular zones while maintaining structural integrity elsewhere in the adapter.
2Reliability
If a retaining plate with support strut and U-shaped section is used, then the stability under tensile load and deformation under compressive load are improved, but the installation space requirement increases
Solution Approach 1:
The patent employs plastic formations with curved surfaces and three-dimensional curvatures instead of flat, planar structures. The plastic formations feature surfaces with varying curvatures that provide controlled deformation paths while occupying minimal space, allowing the adapter to achieve stability and deformation control in a compact configuration suitable for vehicle interior constraints.
3Reliability
If fastening devices with box-shaped profile are used, then the deformation behavior under various loads is improved, but the manufacturing complexity increases
Solution Approach 1:
The patent incorporates predetermined buckling lines and pre-formed plastic formations during the manufacturing process. These features are created in advance with specific geometric configurations that guide the deformation behavior during accidental loads, eliminating the need for complex post-manufacturing adjustments or assemblies while ensuring reliable deformation characteristics.
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 adapter achieves a simpler design with reduced material and weight, effectively managing deformation under various loads while ensuring user safety and accessibility, with controlled deformation mechanisms during accidents.
Implementation Method 1
With the forming of a first predetermined buckling line, a bending strength of the retaining portion in a first direction, in which the adapter is typically stressed in an accident situation, is reduced relative to a bending strength in a second direction opposite the first direction
Implementation Method 2
A requirement for accident safety is therefore to design the grab handle or the adapter such that it is deformable in the event of a compressive load, such as may occur, for example, due to a head impact during an accident
Data Source
AI summary
An adapter for a grab handle in the interior of a motor vehicle, having an attachment portion for attaching the adapter to a vehicle body frame and having a retaining portion, which in the mounted state of the adapter, extends starting from the attachment portion in the direction of the vehicle interior and has a region to which a grab handle can be attached, is characterized in that the retaining portion between the attachment portion and the region to which a grab handle can be attached has a plastic formation or a plurality of plastic formations, so that with the forming of a first predetermined buckling line, a bending strength of the retaining portion in a first direction, in which the adapter is typically stressed in an accident situation, is reduced relative to a bending strength in a second direction opposite the first direction.