Tailgate Lift Assembly with Centered Spring Guide
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Solution Overview
Problem
Operating tailgates on vehicles can be cumbersome and stressful due to their weight and the need to bend over, which can cause back strain and risk injury from sharp corners, especially when raising or lowering them.
Innovation Solution
A tailgate lift-assist assembly featuring a housing with a spring and connector system, utilizing rollers and guides to maintain the connector in a centered position, allowing for easy raising and lowering with minimal effort, and incorporating a turnbuckle for tension adjustment to manage the heavy weight of the tailgate.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stability of the object's composition
If the tailgate material is made substantial to ensure stability, then the stability is improved, but the weight increases making it difficult to lift and lower
Solution Approach 1:
The patent applies a spring mechanism that acts as a counterweight to offset the heavy tailgate weight. The spring is anchored to the vehicle frame and connected to the tailgate, providing an upward lifting force that counteracts gravity. This allows the heavy substantial tailgate to be easily raised and lowered by the user without requiring significant physical effort.
2Ease of operation
If the user manually lifts the heavy tailgate to raise it, then the raising function is achieved, but back strain and injury risk increase
Solution Approach 1:
The spring mechanism provides continuous counterbalancing force throughout the tailgate's range of motion, eliminating the need for the user to support the full weight of the tailgate. The user only needs to provide minimal force to overcome friction and initiate movement, significantly reducing back strain and injury risk.
Solution Approach 2:
The spring acts as an intermediary between the user's applied force and the heavy tailgate. Instead of the user directly lifting the full weight, the spring mediates by providing mechanical assistance, transforming the user's small input force into sufficient lifting force to raise the heavy tailgate safely.
3Reliability
If the connector and spring are not properly centered, then the mechanism may malfunction, but complex guiding structures increase device complexity
Solution Approach 1:
The patent employs curved guide surfaces and rounded connector elements that naturally guide the connector and spring into proper alignment through their geometry. The curved surfaces provide self-centering action, ensuring reliable operation without requiring complex mechanical guides or adjustment mechanisms.
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 assembly significantly reduces the effort required to lift and lower the tailgate, minimizing back strain and injury risk by distributing the weight and providing a stable, guided mechanism for smooth operation.
Implementation Method 1
a spring anchored at one end at a first end of the housing, and a connector having a first end affixed to the opposite end of the spring
Data Source
AI summary
An assembly for assisting in lifting a tailgate includes an elongated housing extending along a predetermined length, a spring anchored at one end at a first end of the housing, and a connector having a first end affixed to the opposite end of the spring and extending through the housing. In one embodiment, at least three rollers are provided for engaging the connector. The rollers may be arranged in a variety of configurations to maintain the connector and spring in a generally centered location within the housing. In another embodiment, at least two vertically aligned guides are provided. A vehicle for integrating the foregoing assemblies is also provided.