Wireless Vehicle Door Lock Actuator with Rotary Button Interface

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Solution Overview

Problem

Traditional vehicle door lock remote control systems are impractical for shared vehicle access, requiring physical key or device handovers and being cumbersome for multiple users, with existing solutions facing issues of user-friendliness, robustness, and manufacturing complexity.

Innovation Solution

A system where a door lock remote control device is integrated with an actuating device that operates pushbuttons via a rotary relative movement, enabled by wireless communication, allowing remote operation and eliminating the need for physical key or device handovers, with a cylindrical design facilitating easy installation and one-hand operation.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If a physical key or remote control device is used for vehicle access, then secure access control is achieved, but it becomes cumbersome for multiple users and requires physical handovers

Engineering Contradiction:
Improveaccess control securityVSAvoidease of access for multiple users
Core Design Contradiction:
ReliabilityVSEase of operation

Solution Approach 1:

The patent uses a digital copy of the key function implemented through a mobile device application, eliminating the need for physical key copies. The mobile device contains a digital representation of the vehicle key that can be independently activated without physical handovers, resolving the contradiction between security and ease of access for multiple users.

Inventive Principle:
Principle #26Copying

Solution Approach 2:

The patent replaces the mechanical key system with an electronic/digital system using mobile devices and wireless communication. This substitution eliminates physical handovers while maintaining security through cryptographic authentication, allowing multiple users to access the vehicle independently through their own mobile devices.

Inventive Principle:
Principle #28Mechanics substitution (Replace mechanical system)

2Extent of automation

If linear motors or electromagnetic actuators are used to operate the key box, then automated key release is achieved, but device complexity and manufacturing difficulty increase

Engineering Contradiction:
Improveautomated key box operationVSAvoidactuating mechanism complexity
Core Design Contradiction:
Extent of automationVSDevice complexity

Solution Approach 1:

The patent replaces complex electromagnetic actuators and linear motors with a simple electromagnetic lock mechanism controlled by a microcontroller. This substitution maintains automated operation while significantly reducing device complexity and manufacturing difficulty by using basic electronic components instead of sophisticated actuating mechanisms.

Inventive Principle:
Principle #28Mechanics substitution (Replace mechanical system)

Solution Approach 2:

The patent changes the operational parameters of the key box system by using a microcontroller-based control system that manages the electromagnetic lock through software logic rather than complex mechanical actuation. This parameter change from mechanical to electronic control simplifies the overall system while maintaining automation.

Inventive Principle:
Principle #35Parameter changes

3Extent of automation

If a drawer mechanism with linear drive is used to move the key, then remote key actuation is achieved, but ease of manufacture and robustness decrease

Engineering Contradiction:
Improveremote key actuation capabilityVSAvoidmanufacturing simplicity
Core Design Contradiction:
Extent of automationVSEase of manufacture

Solution Approach 1:

The patent replaces the drawer mechanism with linear drive with a stationary key holder and electromagnetic lock system. This substitution eliminates complex mechanical components that are difficult to manufacture, while maintaining remote actuation capability through wireless communication and electronic control of the electromagnetic lock.

Inventive Principle:
Principle #28Mechanics substitution (Replace mechanical system)

Solution Approach 2:

The patent extracts the key from a complex drawer mechanism and places it in a simple stationary holder, separating the key storage function from the actuation mechanism. This extraction simplifies the overall structure, making it easier to manufacture while maintaining the essential function of remote key actuation through electromagnetic release.

Inventive Principle:
Principle #2Taking out (Extraction)

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

Enables secure, user-friendly, and robust keyless entry for multiple users by using wireless communication to operate the door lock remote control device within the vehicle, reducing the need for physical key or device handovers and simplifying manufacturing with a rotary operation principle.

Implementation Method 1

The at least one actuating device is remotely operable by wireless communication means

Methodology Applied
Scientific EffectWireless communication: Electromagnetic Propulsion

Implementation Method 2

The at least one actuating device is operable to interact with the at least one pushbutton by a rotary relative movement between the door lock remote control device and the at least one actuating device

Methodology Applied
Scientific EffectMechanical force through rotary movement: Mechanical Force

Data Source

PatentEP3555392B1Arrangement for manipulating a vehicle door lock remote control device
Publication Date: 2022.06.22 TAPCAR AS
  • EP3555392B1 patent drawingFigure 1
  • EP3555392B1 patent drawingFigure 2A~2C
  • EP3555392B1 patent drawingFigure 3A~3B

AI summary

An arrangement for manipulating a door lock remote control device comprises at least one actuating device which, in use, operates at least one respective pushbutton in the door lock remote control device, the at least one actuating device being remotely operable by wireless communication means. The arrangement is further characterized in that the at least one actuating device is operable to interact with the at least one pushbutton by a rotary relative movement between the door lock remote control device and the at least one actuating device.