Vehicle Bumper Buffer Component with Pressure Pipe Gap
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Solution Overview
Problem
In existing vehicle bumpers, the pressure pipe is often powerfully clamped between the bumper beam and the collided object, leading to excessive deformation and difficulty in detecting pressure changes during collisions.
Innovation Solution
A vehicle bumper design that includes a buffer component with a platelike structure that can fold upon collision, featuring a pressure pipe positioned between two surface parts with a gap to avoid interference with the bumper beam, allowing for deformation and pressure change detection without excessive deformation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If the buffer component is configured between the bumper beam and the collided object, then the impact absorption function is improved, but the pressure pipe is powerfully clamped between the bumper beam and the collided object causing excessive deformation
Solution Approach 1:
The buffer component is divided into multiple surface parts (first surface part, second surface part, third surface part) connected by folded parts, creating a segmented structure that can deform progressively. This segmentation allows the pressure pipe to be positioned in the gap between surface parts, preventing direct clamping against the bumper beam while still enabling impact detection through pressure changes in the pipe.
Solution Approach 2:
The gap between the first surface part and the second surface part acts as an intermediary space that prevents the pressure pipe from being directly clamped between the bumper beam and the collided object. This intermediary space allows the pressure pipe to deform and detect pressure changes without experiencing excessive deformation that would compromise its reliability.
2Measurement precision
If the pressure pipe is clamped between the surface parts, then the pressure change detection function is improved, but the pressure pipe may be powerfully clamped between the bumper beam and the collided object
Solution Approach 1:
The pressure pipe is positioned in a specific location - in the gap between the first surface part and the second surface part - rather than being uniformly distributed or positioned elsewhere. This localized positioning ensures that the pipe benefits from the protective effect of the gap structure, preventing harmful clamping while maintaining pressure detection capability at the critical measurement location.
Solution Approach 2:
The pressure pipe is arranged in a dimension that utilizes the gap space between surface parts, creating a spatial separation from the bumper beam. By positioning the pipe in this intermediate dimensional space rather than directly in the compression path between the beam and collided object, the harmful clamping force is avoided while maintaining the ability to detect pressure changes through deformation.
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
This design prevents excessive deformation of the pressure pipe, ensuring reliable pressure change detection and improved impact absorption by avoiding interference between the pressure pipe and the bumper beam.
Implementation Method 1
a pressure pipe configured to be deformed by being clamped between the two surface parts so as to detect impact is provided in the gap
Implementation Method 2
a buffer component, which is provided between the bumper beam and the bumper face. The bumper beam includes a front surface part that becomes a collision surface, and at least one of an upper surface part connected to an upper end part of the front surface part and a lower surface part connected to a lower end part of the front surface part. The buffer component includes a platelike component that can be folded upon collision load
Data Source
AI summary
A vehicle bumper includes: a bumper beam, a bumper face, covering a vehicle body front surface of the bumper beam, and a buffer component, provided between the bumper beam and the bumper face. The buffer component includes a platelike component configured to be folded upon collision load. The buffer component includes a folded part, and two surface parts that are connected through the folded part and are opposite to each other with a gap therebetween in a front-rear direction of the vehicle. A pressure pipe configured to be deformed by being clamped between the two surface parts so as to detect impact is provided in the gap. A lower space part that avoids interference between the bumper beam and a setting part for the pressure pipe in the buffer component is provided below the bumper beam.