Vehicle Door NFC Receiver Layout for Wider Detection Range

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Solution Overview

Problem

Conventional vehicle door opening/closing operation devices with NFC modules in movable portions face issues of cumbersome wiring and limited detection range due to the small size of the receiver, restricting its functionality.

Innovation Solution

The receiver is fixedly provided along the frame body opening or door opening, allowing for simpler wiring and expanding the detection range by attaching it to the door's outer panel, which can be larger and more accessible.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Volume of moving object

If the receiver is placed in the movable door handle, then the device structure is compact, but the wiring becomes cumbersome and the detection range is limited

Engineering Contradiction:
Improvereceiver sizeVSAvoidwiring complexity
Core Design Contradiction:
Volume of moving objectVSDevice complexity

Solution Approach 1:

The receiver is extracted from the movable door handle and repositioned to be fixedly provided along the frame body opening or door opening. This separation allows the receiver to be positioned independently from the moving components, simplifying wiring connections while maintaining a compact overall device structure.

Inventive Principle:
Principle #2Taking out (Extraction)

Solution Approach 2:

Instead of placing the receiver in the conventional location within the movable handle, the invention inverts the approach by positioning it along the frame body opening or door opening. This inverted positioning strategy transforms the wiring arrangement from cumbersome to simple while expanding the detection range.

Inventive Principle:
Principle #13The other way round (Inversion)

2Volume of moving object

If the receiver is placed in the movable door handle, then the device structure is compact, but the detection range is narrower

Engineering Contradiction:
Improvereceiver sizeVSAvoiddetection range
Core Design Contradiction:
Volume of moving objectVSArea of stationary object

Solution Approach 1:

The receiver is extracted from the confined space of the movable door handle and repositioned along the frame body opening or door opening. This extraction enables the receiver to occupy a larger spatial area, thereby expanding the detection range while maintaining a compact receiver unit.

Inventive Principle:
Principle #2Taking out (Extraction)

Solution Approach 2:

The receiver positioning transitions from a one-dimensional placement within the handle to a two-dimensional or three-dimensional arrangement along the frame body opening or door opening. This dimensional change allows the receiver to cover a broader area and expand the detection range effectively.

Inventive Principle:
Principle #17Another dimension (Dimensionality change)

3Device complexity

If the receiver is fixedly provided along the frame body opening or door opening, then the wiring is simple and detection range is expanded, but the receiver is no longer in the movable portion

Engineering Contradiction:
Improvewiring simplicityVSAvoidreceiver positioning flexibility
Core Design Contradiction:
Device complexityVSAdaptability or versatility

Solution Approach 1:

The receiver is extracted from the movable portion and fixedly provided along the frame body opening or door opening. This extraction simplifies wiring connections while the frame body structure provides sufficient adaptability for the receiver positioning, maintaining versatility in the overall device functionality.

Inventive Principle:
Principle #2Taking out (Extraction)

Data Source

PatentEP4671474A1Vehicle door opening/closing operation device
Publication Date: 2025.12.31 ALPHA
  • EP4671474A1 patent drawingFigure 1
  • EP4671474A1 patent drawingFigure 2
  • EP4671474A1 patent drawingFigure 3

AI summary

Provided is a vehicle door opening/closing operation device that can allow for simple wiring and expand a detection range. The vehicle door opening/closing operation device 2 according to this invention is a vehicle door opening/closing operation device 2 for opening and closing a door 1 for a vehicle, the vehicle door opening/closing operation device 2 being attached to a door opening 10a provided in an outer panel 10 of the door 1, the vehicle door opening/closing operation device 2 including a frame body 5 having a frame body opening 51, the frame body 5 being attached to the door opening 10a so as to appear outside the door 1; and a receiver 80 fixedly provided to the door 1 and disposed along the frame body opening 51 or along the door opening 10a, the receiver 80 being configured to receive authentication information from a portable device or medium carried by a user.