Tailgate Emergency Opening Cover With Rotating Knob Lock

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Solution Overview

Problem

Existing tailgate emergency opening covers suffer from poor finger comfort and man-machine relationship due to the need for single-finger operation and a protruded boundary, leading to reduced elasticity and potential separation between the cover and the trim panel over time.

Innovation Solution

A tailgate emergency opening cover with a cover body, a connecting mechanism, and a rotatable knob engagement mechanism that locks and unlocks the cover body to the tailgate trim panel, allowing easy opening and closing without auxiliary tools, using a cantilever and rotating sleeve design to maintain secure connection and prevent separation.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If a resilient ""-shaped structure is used for engagement and fastening, then the initial fastening is achieved, but the elasticity is reduced after many times opening, causing poor matching or separation

Engineering Contradiction:
Improvefastening reliabilityVSAvoidservice life
Core Design Contradiction:
ReliabilityVSDuration of action of stationary object

Solution Approach 1:

The patent divides the fastening function into two independent parts: a connecting mechanism for initial fastening and a knob engagement mechanism for locking. This segmentation allows each mechanism to perform its specific function optimally, with the knob mechanism providing reliable locking without relying on the resilience of the connecting mechanism, thereby extending service life.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The knob engagement mechanism acts as an intermediary that transfers the locking function from the resilient structure to a mechanical interlocking system. The locking groove and locking protrusion provide a direct mechanical connection that does not degrade with repeated use, resolving the reliability vs. service life contradiction.

Inventive Principle:
Principle #24Intermediary (Mediator)

2Device complexity

If the cover body is directly fixed to the tailgate trim panel, then the structure is simple, but the cover may separate after repeated opening operations

Engineering Contradiction:
Improvestructure simplicityVSAvoidconnection reliability
Core Design Contradiction:
Device complexityVSReliability

Solution Approach 1:

The patent segments the connection system into a connecting mechanism and a knob engagement mechanism. The connecting mechanism provides initial attachment with simple structure, while the knob engagement mechanism provides reliable locking that prevents separation. This segmentation maintains structural simplicity while ensuring connection reliability.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The patent introduces a dynamic locking system where the knob can rotate between locked and unlocked positions. This dynamic mechanism ensures reliable connection during normal operation while allowing easy opening when needed, resolving the contradiction between simple structure and reliable connection.

Inventive Principle:
Principle #15Dynamics

Data Source

PatentUS20240218710A1Tailgate Emergency Opening Cover and Vehicle
Publication Date: 2024.07.04 BEIJING CHJ AUTOMOTIVE TECH CO LTD
  • US20240218710A1 patent drawing
  • US20240218710A1 patent drawing
  • US20240218710A1 patent drawing

AI summary

A tailgate emergency opening cover includes a cover body, configured to match an emergency opening on a tailgate trim panel; a connecting mechanism provided on the cover body, the connecting mechanism being configured to fix a first side of the cover body with the tailgate trim panel; and a knob engagement mechanism, rotatably provided on the cover body. When the knob engagement mechanism is located at a first position, a second side of the cover body and the tailgate trim panel are locked; when the knob engagement mechanism is located at a second position, the second side of the cover body and the tailgate trim panel are unlocked, and the cover body can be moved away from the emergency opening, so that the emergency opening is opened.