Flush Door Handle Linkage for Manual Emergency Opening
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Solution Overview
Problem
Existing auto flush door handles are complex, require electric power for operation, and can be difficult to open in emergencies or when the battery is discharged, leading to delayed rescue operations.
Innovation Solution
A horizontal storage type auto flush door handle assembly with a handle cover that accommodates horizontally, featuring a four-joint link mechanism and a release link to release the door latch, allowing manual operation in emergencies and reducing complexity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Shape
If an auto flush type door handle is used to improve aesthetics and safety, then the aerodynamic performance is improved, but the handle structure becomes complicated and requires electric power for operation
Solution Approach 1:
The door handle is divided into a handle cover and a handle body. The handle cover is separable and can be manually pulled to operate the door, while the handle body remains fixed to the door. This segmentation simplifies the overall structure by eliminating the need for complex actuators and electric components, while still achieving the auto flush appearance when the handle cover is in its initial position.
2Shape
If an auto flush type door handle is used to improve aesthetics and safety, then the aerodynamic performance is improved, but it cannot be operated when the battery is discharged
Solution Approach 1:
The handle cover is designed to be manually operable without requiring any electric power. When the battery is discharged or in emergency situations, the user can directly pull the handle cover to open the door. This self-service mechanism ensures the door can always be opened manually, providing reliable operation independent of the vehicle's electrical system.
3Shape
If an auto flush type door handle is used, then the aerodynamic performance is improved, but it is not easy for users to recognize and operate in emergencies
Solution Approach 1:
Instead of requiring the user to push or press the handle to open the door, the handle cover is designed to be pulled outward. This inverted operation method makes it intuitive and easy to recognize in emergency situations, as pulling is a natural and obvious action for opening a door, eliminating the need for users to understand complex operating procedures.
4Shape
If the door handle components are operated only in a sliding manner, then the auto flush function is achieved, but the handle structure becomes complicated
Solution Approach 1:
The handle cover is designed with rotational freedom around a rotation axis. When the user pulls the handle cover, it rotates along with the link mechanism to achieve the door opening function. This dynamic rotational movement replaces complex sliding mechanisms, simplifying the overall structure while maintaining the auto flush appearance during normal vehicle operation.
Data Source
AI summary
An auto flush door handle assembly includes a housing with an opening formed on one side of the housing, and a handle cover disposed inside the housing. In particular, the handle cover opens or closes the opening. The flush door handle assembly further includes a first rotation link having an upper end link-connected to the housing and a lower end link-connected to the handle cover, and a second rotation link positioned apart from the first rotation link and having an upper end link-connected to the housing and a lower end link-connected to the handle cover. The flush door handle assembly includes a release link operated by the first rotation link and configured to release a door latch.