Unlocking device for a vehicle hatch of a vehicle with a vehicle lock

DE102018001021B4Active Publication Date: 2026-07-16AUDI AG
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Patent Information

Application Number
DE102018001021
Authority / Receiving Office
DE · DE
Patent Type
Patents
Current Assignee / Owner
Filing Date
2018-02-08
Publication Date
2026-07-16
Estimated Expiration
2038-02-08

AI Technical Summary

Technical Problem

Existing unlocking devices for vehicle flaps require a permanent energy source to prevent unintentional opening and fail to ensure safety during vehicle movement, violating FMVSS regulation 401.

Method used

A clutch unit with two stable states (closed and open) is used, controlled by a control unit that switches based on driving signals, allowing manual operation without external energy, and includes a sensor to detect actuation strokes for emergency unlocking.

Benefits of technology

The solution ensures the vehicle flap remains closed during movement without energy consumption and allows safe manual or electric unlocking, even in the event of electrical failure, adhering to safety regulations.

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Abstract

Unlocking device (1) for a vehicle hatch of a vehicle with a vehicle lock (2), comprising: - a manually operable actuating element (3), - a coupling unit (4) switchable between a closed state (I) and an open state (II), with which, in the closed state (II), an operative connection can be established between the actuating element (3) and the vehicle lock (2) that causes the vehicle lock (2) to open, - an actuator (5) for switching the coupling unit (4), and - a control unit (6) for controlling the actuator (5) depending on a driving signal (SF) which is dependent on the vehicle's speed, wherein the control unit (6) is configured to control the actuator (5) to switch the coupling unit (4) to the open state (II) when the driving signal (SF) is present and to control the actuator (5) to switch the coupling unit (4) to the closed state (I) when the driving signal (SF) is absent.characterized in that: - the coupling unit (4) comprises a first and a second coupling lever (4.1, 4.2) which are detachably coupled in the closed state of the coupling unit (4); - the first coupling lever (4.1) can be pivoted by means of the actuator (5) between an engagement position (III) establishing coupling with the second coupling lever (4.2) and a non-engagement position (IV) establishing the open state (II) of the coupling unit (4) about a pivot axis (4.3) arranged at the end of the coupling lever (4.1); - the second coupling lever (4.2) has a return element (4.5) with which an actuating stroke effected by means of the actuating element (3) can be reversed; - the second coupling lever (4.2) is connected to a drive lever (4.7) which can establish an operative connection with the first coupling element (4.1).and- the drive lever (4.7) is designed to pivot the first clutch lever (4.1) from the non-engagement position (IV) to the engagement position (III) when the actuation stroke of the second clutch element (4.2) is initiated by actuation of the actuating element (3).
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Citation Information

Patent Citations

  • Emergency release device for a vehicle trunk

    DE102011120188A1

  • Lock for a motor vehicle

    DE102015121848A1

  • Method for unlatching a boot lid

    EP1288407A2

  • Security device for neutralising a mechanical pulling control

    FR2719923A1