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EP3583697A1 - Poignée de porte de véhicule comportant un dispositif d'émission et un dispositif de détection - Google Patents

Poignée de porte de véhicule comportant un dispositif d'émission et un dispositif de détection

Info

Publication number
EP3583697A1
EP3583697A1 EP18718137.5A EP18718137A EP3583697A1 EP 3583697 A1 EP3583697 A1 EP 3583697A1 EP 18718137 A EP18718137 A EP 18718137A EP 3583697 A1 EP3583697 A1 EP 3583697A1
Authority
EP
European Patent Office
Prior art keywords
sensor electrode
shield
antenna coil
vehicle door
door handle
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP18718137.5A
Other languages
German (de)
English (en)
Inventor
Berthold Sieg
Andreas Gornik
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Huf Huelsbeck and Fuerst GmbH and Co KG
Original Assignee
Huf Huelsbeck and Fuerst GmbH and Co KG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Huf Huelsbeck and Fuerst GmbH and Co KG filed Critical Huf Huelsbeck and Fuerst GmbH and Co KG
Publication of EP3583697A1 publication Critical patent/EP3583697A1/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03K—PULSE TECHNIQUE
    • H03K17/00—Electronic switching or gating, i.e. not by contact-making and –breaking
    • H03K17/94—Electronic switching or gating, i.e. not by contact-making and –breaking characterised by the way in which the control signals are generated
    • H03K17/945—Proximity switches
    • H03K17/955—Proximity switches using a capacitive detector
    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05B—LOCKS; ACCESSORIES THEREFOR; HANDCUFFS
    • E05B81/00—Power-actuated vehicle locks
    • E05B81/54—Electrical circuits
    • E05B81/64—Monitoring or sensing, e.g. by using switches or sensors
    • E05B81/76—Detection of handle operation; Detection of a user approaching a handle; Electrical switching actions performed by door handles
    • E05B81/77—Detection of handle operation; Detection of a user approaching a handle; Electrical switching actions performed by door handles comprising sensors detecting the presence of the hand of a user
    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05B—LOCKS; ACCESSORIES THEREFOR; HANDCUFFS
    • E05B81/00—Power-actuated vehicle locks
    • E05B81/54—Electrical circuits
    • E05B81/64—Monitoring or sensing, e.g. by using switches or sensors
    • E05B81/76—Detection of handle operation; Detection of a user approaching a handle; Electrical switching actions performed by door handles
    • E05B81/78—Detection of handle operation; Detection of a user approaching a handle; Electrical switching actions performed by door handles as part of a hands-free locking or unlocking operation
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03K—PULSE TECHNIQUE
    • H03K17/00—Electronic switching or gating, i.e. not by contact-making and –breaking
    • H03K17/94—Electronic switching or gating, i.e. not by contact-making and –breaking characterised by the way in which the control signals are generated
    • H03K17/945—Proximity switches
    • H03K17/95—Proximity switches using a magnetic detector
    • H03K17/952—Proximity switches using a magnetic detector using inductive coils
    • H03K17/9525—Proximity switches using a magnetic detector using inductive coils controlled by an oscillatory signal
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03K—PULSE TECHNIQUE
    • H03K2217/00—Indexing scheme related to electronic switching or gating, i.e. not by contact-making or -breaking covered by H03K17/00
    • H03K2217/94—Indexing scheme related to electronic switching or gating, i.e. not by contact-making or -breaking covered by H03K17/00 characterised by the way in which the control signal is generated
    • H03K2217/96—Touch switches
    • H03K2217/9607—Capacitive touch switches
    • H03K2217/960755—Constructional details of capacitive touch and proximity switches
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03K—PULSE TECHNIQUE
    • H03K2217/00—Indexing scheme related to electronic switching or gating, i.e. not by contact-making or -breaking covered by H03K17/00
    • H03K2217/94—Indexing scheme related to electronic switching or gating, i.e. not by contact-making or -breaking covered by H03K17/00 characterised by the way in which the control signal is generated
    • H03K2217/96—Touch switches
    • H03K2217/9607—Capacitive touch switches
    • H03K2217/960755—Constructional details of capacitive touch and proximity switches
    • H03K2217/960765—Details of shielding arrangements

Definitions

  • the invention relates to a motor vehicle door handle with a transmitting device and a sensor device.
  • the invention relates to a vehicle door handle with a
  • the capacitive sensor arrangement for detecting approaches to the vehicle door handle.
  • the capacitive sensor arrangement is accommodated in a handle housing of the vehicle door handle. Also included in the handle housing is an antenna coil with
  • the antenna coil can be any suitable antenna coil winding.
  • the antenna coil can be any suitable antenna coil.
  • the sensor electrode is accommodated at a distance from the antenna coil, so that the sensor electrode extends with its longest extension in the direction of the winding axis of the coil winding.
  • Antenna coil are correspondingly substantially the same
  • the sensor electrode and the antenna coil are also aligned with each other so that they overlap in the direction of their longest extent at least partially, ie within the handle housing at least in sections
  • Both the sensor electrode and the antenna coil are coupled to a control and evaluation circuit.
  • Another door handle device is disclosed for example in the document DE 10 2005 035 935 AI. While in conventional door handles, the antenna coil and the sensor electrode in a handle housing in sufficient
  • the proper function of the sensor electrode can be influenced in such compact designs, so that the
  • the object of the invention is to provide a robust and less susceptible construction of a vehicle door handle with little space.
  • Evaluation circuit with a shielding potential can be coupled.
  • Sensor electrode and the antenna coil causes on the one hand, a capacitive coupling between the antenna coil and the shield and on the other hand between the shield of the
  • the shield is suitable for developing its effect independently of the operating state of the antenna coil.
  • the sensor electrode is in no way disturbed only during operation of the antenna coil; instead, the inductance of the antenna coil is capacitively coupled to the sensor electrode and influences the function of the sensor electrode even in the quiescent state of the antenna coil.
  • the antenna coil is controlled with a time delay to the sensor electrode, but it is essential that the shield at least in such a way with temporal overlap together with the
  • Sensor electrode is driven such that the shield is at least temporarily coupled to the Ablepotenzial when the sensor electrode is driven.
  • the grip mass or vehicle mass can serve as shielding potential.
  • Ablepotenzial coupled electrically conductive shield as a decoupling element, which eliminates the direct capacitive coupling between the sensor electrode and antenna coil. Even if the sensor electrode is capacitively coupled to the shield, the effect on the
  • the shield may be formed as a metal foil, sheet metal as well as a more complex conductor structure.
  • the sensor electrode may be a single conductor surface or split
  • the sensor electrode and the shield are on a common
  • Printed circuit board applied, but at different levels of this circuit board.
  • it may be provided to arrange the shield and the sensor electrode on opposite sides of a single printed circuit board, but it can also be used multilayer printed circuit boards.
  • the sensor electrode and / or the shield can be used as surface-mounted components on this printed circuit board
  • the senor electrode and the shield each as a conductor directly on the
  • Shielding is easy to manufacture and already at
  • Sensor electrode can be provided as well as for the shield. Finally, the orientation of the sensor electrode to the shield is also precisely fixed.
  • the sensor electrode has branched conductive structures which extend on at least one plane of the printed circuit board.
  • branched conductor structures ensures that a larger surface area can be encompassed or encompassed by the sensor electrode, which due to the incomplete filling of this region with conductive material of the sensor electrode is simultaneously available for further components or, for example, openings in the printed circuit board. In this way, a compact design is further favored and material optimized to achieve the greatest possible sensitivity of the sensor electrode.
  • the shield has branched conductor structures, which are based on at least one Extend level of the circuit board. The same applies in principle to the shielding as stated above for the sensor electrode.
  • the branching of a guide structure ensures that the largest possible area of the electromagnetic
  • Influence of the shield is detected while at the same time the occupancy area is reduced by the conductor structure of the shield.
  • Electrode structure is an effective arrangement.
  • the largest dimension of the sensor electrode is chosen to be between 80% and 120% of the maximum extent of the shield. Particularly effective is the shielding effect of the shield on the sensor electrode when the
  • Length extension is chosen approximately equal, especially if the sensor electrode does not protrude significantly beyond the shield in the edge regions. Nevertheless, it has been shown that, if necessary, a deviation in the longitudinal extent in the degree described still allows the shielding effect to be sufficient.
  • Motor vehicle door handle according to the invention is provided to form the sensor electrode and the shield in the direction parallel to the printed circuit board plane with congruent geometry.
  • the sensor electrode with congruent geometry to the shield but on different surfaces or levels of the circuit board
  • Vehicle door handle are the sensor electrode and the shield in the direction parallel to the PCB level and with
  • Shielding electrode on the other hand on the PCB levels offset and arranged with different geometry that no congruence in one direction
  • the sensor electrode one, two or more conductor structures having parallel extension on a sensor plane, while the shield the
  • Ladder structures are possible. Whenever overlaps are mentioned here, it is meant to be partially congruent in a projection perpendicular to the board level.
  • the smallest distance between the shield and the antenna coil is chosen to be less than 8 mm, preferably less than 4 mm.
  • Vehicle door handles possible, thereby reducing weight, improving aerodynamics and expansion of the
  • Shielding and coupling is realized with a shielding potential.
  • FIG. 1 shows schematically a device according to the invention
  • Figure 2 shows schematically the top and bottom of a circuit board of the first embodiment with sensor electrode and shield and coupled control and evaluation;
  • Figure 3 shows schematically a section through a
  • FIG. 1 shows a vehicle door handle with a housing 1.
  • an antenna coil 2 having a coil winding wound around a ferrite core is shown.
  • a circuit board 3 is disposed adjacent to the antenna coil 2. The distance of the antenna coil 2 from the printed circuit board 3 is less than 10 mm in this embodiment.
  • a shield 4 is arranged as a conductor on the circuit board 3.
  • the printed circuit board 3 is made 1 mm thick in this embodiment.
  • a sensor electrode 5 is On a side facing away from the antenna coil 2 of the circuit board 3 as
  • the antenna coil 2 can be driven to transmit low-frequency signals in the range of 125 kHz.
  • the shielding 4 can be coupled via the control and evaluation device 6 with a constant shielding potential, while the sensor electrode 5 is operated as a capacitive sensor.
  • a sensor electrode as a capacitive sensor is described in detail in the prior art.
  • multiple transposition of the sensor electrode takes place in order to detect the capacitance of the sensor electrode, which is influenced by an approach of an object, for example the hand of a user.
  • FIG. 1 shows schematically the opposite sides of the circuit board 3, for clarity in this
  • FIG. 3 shows a fork structure with two prongs, which the
  • circuit board 3 Area through which a section was cut in Figure 3 schematically.
  • the circuit board is adapted in their dimensions to the space of the door handle 1.
  • the dimensions of the printed circuit board 3 are approximately in this embodiment
  • FIG. 3 shows the printed circuit board 3, on the underside of which the conductor tracks of the sensor electrode 5 are shown.
  • the shield 4 can be seen.
  • the shield 4 is, as shown in Figure 3, between the sensor electrode 5 and the antenna coil. 2
  • the shield 4 and the sensor electrode 5 are not arranged congruently in the circuit board plane of the circuit board 3. Rather, the branching ladder of the shielding 4 take the ladder of the
  • Sensor electrode 5 as a by covering areas laterally of the sensor electrode 5 and a central region
  • Sensor electrode 5 is located. It has been found that such an arrangement offers optimized shielding of the sensor electrode 5 with respect to the antenna coil 2.

Landscapes

  • Lock And Its Accessories (AREA)
  • Switches That Are Operated By Magnetic Or Electric Fields (AREA)

Abstract

L'invention concerne une poignée de porte de véhicule comportant un système de détection capacitif, une bobine d'antenne (2) munie d'un premier enroulement de bobine étant logée dans un boîtier de poignée (1), et une électrode de détection (5) étant logée dans le boîtier de poignée à distance de la bobine d'antenne. L'électrode de détection (5) et la bobine d'antenne (2) sont superposées dans la direction de leur étendue longitudinale respective et sont raccordées à un circuit de commande et d'évaluation (6). Entre l'électrode de capteur (5) et la bobine d'antenne (2) est agencé un blindage électroconducteur (4) qui peut être raccordé à un potentiel de blindage au moyen du circuit de commande et d'évaluation. Le circuit de commande et d'évaluation commande l'électrode de détection, le blindage et la bobine d'antenne de telle manière que la bobine d'antenne est activée de manière décalée dans le temps par rapport à l'électrode de détection et que le blindage est au moins temporairement raccordé au potentiel de blindage lorsque l'électrode de détection est activée.
EP18718137.5A 2017-06-08 2018-04-13 Poignée de porte de véhicule comportant un dispositif d'émission et un dispositif de détection Withdrawn EP3583697A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102017112688.0A DE102017112688A1 (de) 2017-06-08 2017-06-08 Kraftfahrzeugtürgriff mit Sendeeinrichtung und Sensoreinrichtung
PCT/EP2018/059514 WO2018224205A1 (fr) 2017-06-08 2018-04-13 Poignée de porte de véhicule comportant un dispositif d'émission et un dispositif de détection

Publications (1)

Publication Number Publication Date
EP3583697A1 true EP3583697A1 (fr) 2019-12-25

Family

ID=62002130

Family Applications (1)

Application Number Title Priority Date Filing Date
EP18718137.5A Withdrawn EP3583697A1 (fr) 2017-06-08 2018-04-13 Poignée de porte de véhicule comportant un dispositif d'émission et un dispositif de détection

Country Status (4)

Country Link
EP (1) EP3583697A1 (fr)
JP (1) JP2020525671A (fr)
DE (1) DE102017112688A1 (fr)
WO (1) WO2018224205A1 (fr)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102019123194A1 (de) * 2019-08-29 2021-03-04 Huf Hülsbeck & Fürst Gmbh & Co. Kg Sensorvorrichtung
DE102019132134A1 (de) * 2019-11-27 2021-05-27 Huf Hülsbeck & Fürst Gmbh & Co. Kg Vorrichtung für ein Fahrzeug zur Detektion einer Aktivierungshandlung in einem Detektionsbereich
DE102020102914A1 (de) * 2020-02-05 2021-08-05 Huf Hülsbeck & Fürst Gmbh & Co. Kg Sensorvorrichtung sowie Verfahren hierzu
DE102020125376A1 (de) * 2020-09-29 2022-03-31 Huf Hülsbeck & Fürst Gmbh & Co. Kg Kommunikationsvorrichtung für ein Fahrzeug sowie ein Verfahren hierzu

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102005035935B4 (de) 2005-07-28 2016-02-18 Huf Hülsbeck & Fürst Gmbh & Co. Kg Kraftfahrzeugtürgriff mit integriertem kapazitiven Sensor, induktiver Sendeantenne und einer Anordnung zum Vermindern von Fehlauslösungen des kapazitiven Sensors
JP2009030262A (ja) * 2007-07-25 2009-02-12 Fujikura Ltd 人体接近検出装置
JP2010209525A (ja) * 2009-03-06 2010-09-24 Sumida Corporation ドアハンドル
JP5480112B2 (ja) 2010-11-29 2014-04-23 株式会社ユーシン アンテナユニット及びこれを備えたドアハンドル装置
DE102012109034A1 (de) * 2012-09-25 2014-03-27 Huf Hülsbeck & Fürst Gmbh & Co. Kg Kraftfahrzeugtürgriff mit Sensorelektronik

Also Published As

Publication number Publication date
DE102017112688A1 (de) 2018-12-13
JP2020525671A (ja) 2020-08-27
WO2018224205A1 (fr) 2018-12-13

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