Tail Gate Pop-Up Lever Mechanism for Sealing Effort Reduction
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Solution Overview
Problem
Users face difficulty in opening a tail gate due to the need for significant effort as the gate is pressed against the vehicle body by a weather strip, requiring a substantial amount of strength to lift it after releasing the locking state between the striker and ratchet plate.
Innovation Solution
A pop-up structure for the tail gate that includes a pop-up lever and a spring mechanism, which lifts the tail gate to a preset level when the locking structure between the striker and ratchet plate is released, reducing the required strength and improving user convenience.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the tail gate is pressed against the vehicle body through a weather strip to ensure sealing, then the sealing performance is improved, but the user must lift the tail gate with a relatively large amount of effort after releasing the locking state
Solution Approach 1:
The pop-up lever is rotated in advance to lift the tail gate to a predetermined level before the user needs to open it. This preliminary action reduces the effort required by the user, as the gate is already partially elevated and separated from the weather strip pressure.
Solution Approach 2:
The pop-up lever acts as an intermediary mechanism between the locking device and the tail gate. It translates the unlocking action into a lifting motion, mediating the force required to overcome the weather strip pressure and making the gate easier to open.
2Ease of operation
If a pop-up lever mechanism is added to lift the tail gate to a preset level, then the user's convenience is improved and the amount of strength required is reduced, but the device complexity increases
Solution Approach 1:
The pop-up lever mechanism is integrated into the existing locking device structure. The bracket is mounted on the tail gate and the pop-up lever rotates about a pin on the bracket, combining the pop-up function with the locking mechanism rather than adding a completely separate system.
Solution Approach 2:
The locking device serves multiple functions: it provides the locking/unlocking mechanism, the pop-up lever mechanism for preliminary lifting, and the guide slit for controlling the motion path. This multi-functionality reduces the need for additional separate components.
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 pop-up structure effectively reduces the effort needed to open the tail gate by lifting it to a predetermined level, enhancing user convenience and ease of operation.
Implementation Method 1
a pop-up lever spring elastically supporting the pop-up lever to rotate in the one direction such that the striker disposed on the push home of the rotation lever is separated outward from the bracket
Data Source
AI summary
A pop-up structure of a tail gate may include a tail gate disposed to open and close a passage of a vehicle body, a striker to be fixed to the vehicle body, a locking device mounted on the tail gate and locked to the striker to fix the tail gate to the vehicle body, and a pop-up device disposed at the tail gate and pushing against the striker by a predetermined distance to lift the tail gate by a corresponding predetermined height when the locking device is unlocked from the striker, in which the pop-up device may include a bracket mounted on the tail gate, a pop-up lever rotatably disposed about a pop-up lever pin on the bracket, a rotation lever rotatably disposed about a rotation lever pin, and a push home pushing the striker, and a pop-up lever spring elastically supporting the pop-up lever to rotate in one direction.