Handleless Vehicle Access Assembly With Split NFC Carrier Layout
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing vehicle actuating devices face challenges in utilizing limited installation space while maintaining aerodynamics, convenience, and ensuring secure access control without additional gaps or recesses, particularly for handleless designs.
Innovation Solution
A carrier unit is arranged inside the vehicle's movable part, with a wing element outside, utilizing a two-part construction for easy assembly and distributing components like an NFC antenna and evaluation unit to maintain aerodynamics and security, and a twisted cable for interference protection.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Extent of automation
If sensor devices and electronic components are integrated into door handles, then automatic actuation function is improved, but installation space requirement increases
Solution Approach 1:
The actuating device is divided into two separate parts: a wing element (outer part) and a carrier unit (inner part). The carrier unit contains the sensor device and electronic components, while the wing element serves as the external interface. This segmentation allows the electronic components to be positioned away from the door handle area, reducing the installation space requirement while maintaining the automatic actuation function.
2Object-affected harmful factors
If door handles are removed for aerodynamic design, then aerodynamic performance is improved, but access control function is worsened
Solution Approach 1:
The sensor device is extracted from the traditional door handle location and integrated into the carrier unit positioned inside the vehicle. The wing element serves as a minimal external interface that triggers the actuation without requiring a conventional door handle structure. This extraction maintains the aerodynamic design by eliminating protruding handles while preserving access control functionality through the integrated sensor system.
3Reliability
If communication element and evaluation unit are arranged at distance, then interference protection is improved, but connection complexity increases
Solution Approach 1:
A twisted pair cable serves as an intermediary connection between the communication element (NFC antenna) on the wing element and the evaluation unit on the carrier unit. The twisted pair structure acts as a shield against electromagnetic interference, providing reliable signal transmission over the distance between components while managing the connection complexity through a standardized cable type.
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 solution effectively utilizes limited space, ensures simple installation, maintains vehicle appearance and aerodynamics, and provides secure, convenient actuation with extended functions, including emergency access.
Implementation Method 1
the wing element has a communication element, in particular in the form of an NFC antenna (near-field communication antenna)
Data Source
Figure 1~2
Figure 3
Figure 4
AI summary
The invention relates to a carrier unit (20) for an actuating device (100) of an access system (110) of a vehicle (200) for actuating, preferably unlocking and/or opening and, if necessary,Closing and/or locking a, in particular handle-less, movable part (201) of the vehicle (200), wherein the actuating device (100) has a, in particular fixed, wing element (10), wherein the wing element (10) is designed to be arranged from the outside on the movable part (201) of the vehicle (200), and wherein the wing element (10) has a communication element (NFC), in particular in the form of an NFC antenna, characterized in that the carrier unit (20) is designed to be arranged from the inside on the movable part (201) of the vehicle (200) and to be coupled to the wing element (10), that the carrier unit (20) has a main electronics unit (E2) with an evaluation unit (E2(NFC)) for the communication element (NFC) in order to carry out an authentication process (ID) with a user (300).