EP3555403A1 - Pièce de carrosserie de véhicule automobile comportant un revêtement formant un capteur électrique - Google Patents
Pièce de carrosserie de véhicule automobile comportant un revêtement formant un capteur électriqueInfo
- Publication number
- EP3555403A1 EP3555403A1 EP17821706.3A EP17821706A EP3555403A1 EP 3555403 A1 EP3555403 A1 EP 3555403A1 EP 17821706 A EP17821706 A EP 17821706A EP 3555403 A1 EP3555403 A1 EP 3555403A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- coating
- opening
- measuring
- covered
- face
- 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- Withdrawn
Links
Classifications
-
- E—FIXED CONSTRUCTIONS
- E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
- E05F—DEVICES FOR MOVING WINGS INTO OPEN OR CLOSED POSITION; CHECKS FOR WINGS; WING FITTINGS NOT OTHERWISE PROVIDED FOR, CONCERNED WITH THE FUNCTIONING OF THE WING
- E05F15/00—Power-operated mechanisms for wings
- E05F15/70—Power-operated mechanisms for wings with automatic actuation
- E05F15/73—Power-operated mechanisms for wings with automatic actuation responsive to movement or presence of persons or objects
- E05F15/75—Power-operated mechanisms for wings with automatic actuation responsive to movement or presence of persons or objects responsive to the weight or other physical contact of a person or object
-
- 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
- E05Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES E05D AND E05F, RELATING TO CONSTRUCTION ELEMENTS, ELECTRIC CONTROL, POWER SUPPLY, POWER SIGNAL OR TRANSMISSION, USER INTERFACES, MOUNTING OR COUPLING, DETAILS, ACCESSORIES, AUXILIARY OPERATIONS NOT OTHERWISE PROVIDED FOR, APPLICATION THEREOF
- E05Y2400/00—Electronic control; Electrical power; Power supply; Power or signal transmission; User interfaces
- E05Y2400/80—User interfaces
- E05Y2400/85—User input means
- E05Y2400/852—Sensors
-
- E—FIXED CONSTRUCTIONS
- E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
- E05Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES E05D AND E05F, RELATING TO CONSTRUCTION ELEMENTS, ELECTRIC CONTROL, POWER SUPPLY, POWER SIGNAL OR TRANSMISSION, USER INTERFACES, MOUNTING OR COUPLING, DETAILS, ACCESSORIES, AUXILIARY OPERATIONS NOT OTHERWISE PROVIDED FOR, APPLICATION THEREOF
- E05Y2900/00—Application of doors, windows, wings or fittings thereof
- E05Y2900/50—Application of doors, windows, wings or fittings thereof for vehicles
- E05Y2900/53—Type of wing
- E05Y2900/531—Doors
-
- 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
- H03K2217/96078—Sensor being a wire or a strip, e.g. used in automobile door handles or bumpers
Definitions
- Motor vehicle body part comprising a coating forming an electric sensor
- the present invention relates to the field of the automotive industry, and more particularly the object detection systems of the electric sensor type, with contact (tactile) or non-contact (capacitive), for opening of a motor vehicle.
- An electric sensor is a sensor detecting a variation of an electrical parameter.
- Such openings may be equipped with object detection systems, with or without contact, such as anti-pinch devices or activation / opening / closing control devices.
- the object detection system makes it possible to prevent the jamming of an object obstructing between the opening leaf, and at least one adjacent fixed element when the sash is closed. , especially in the case where this object is a part of the body of a user.
- the object detection system allows the opening of the opening by simple approximation or by simple contact with a portion of the opening.
- object detection system such as mechanical sensors of the switch type, resistive sensors, acoustic sensors, optical sensors, or else capacitive sensors.
- capacitive sensors can detect with or without contact objects of various kinds, metallic or non-metallic. These sensors are based on the detection of a variation of capacity. The capacitance between an active electrode of the sensor and the electric potential of the earth is measured. An object placed between this active electrode and the electric potential of the earth influences the value of this capacitance.
- the object of the invention is to remedy these drawbacks by providing a part provided with a sensor using a coating of the workpiece as a means of detection.
- the subject of the invention relates to a bodywork part of a motor vehicle made of plastics material comprising at least one face provided with a coating, as well as means for connecting the coating to a means for measuring a variation of an electrical parameter related to the coating.
- This solution allows a higher level of integration with existing solutions: integrated solution in the coating at the time of painting finish, for example.
- This solution is discrete because it does not consist of components to be mounted in the visible area by an operator.
- the part may further comprise one or more of the following features, taken alone or in combination:
- the coating is able to adhere to the plastics material of the part and has an electrical resistance of less than 20 k ⁇ at 300 k, preferably less than 5 k ⁇ , more preferably less than 3 k ⁇ ;
- the coating contains electrically conductive fillers, chosen alone or in combination in the following group of charges: graphite, metals, such as copper, silver, iron, indium, graphite alloy and metal, carbon black;
- the coating contains more than 10% by weight of conductive filler, preferably between 20% and 60% by weight;
- the coating is selected from the following group of coatings: a body part paint; a primary; a base ; a varnish ; a metallic film; an electrically conductive substrate; an electrically conductive coating;
- the coating is covered with at least one other coating selected from the group of coatings: an antifouling protection varnish, a base, a paint varnish;
- connection means are overmolded in the room or connected to a portion of coating 30 extended on a non-visible surface of the room;
- the piece constitutes an opening of a motor vehicle
- the face of the body part covered by the coating and the measuring means define a tactile or capacitive sensor, said sensor constituting an anti-pinch system for the opening;
- the face of the body part covered by the coating and the measuring means define a tactile or capacitive sensor, said sensor constituting a shutter opening control system;
- the face of the body part covered by the coating is positioned in the police plate area of the tailgate type opening;
- the measuring means is a means of measuring the capacitance between the coating and the electric potential of the earth;
- the coating is covered with a plastic wall
- the measuring means is a means for measuring a variation of electrical charges of the coating.
- the invention also relates to an assembly of a body part of a motor vehicle according to the invention and a means for measuring the capacitance between the coating and the electric potential of the earth.
- FIG. 1 illustrates an example of a motor vehicle body part according to the invention
- FIGS. 2A and 2B illustrate a detail of FIG. 1, in order to clearly illustrate the means of connection between the coating and the measurement means;
- FIG. 3 illustrates an example of a motor vehicle body part according to the invention, the coating of which forms a capacitive sensor;
- FIGS. 4A to 5B illustrate two exemplary embodiments, in which the positioning of the coating, and / or the covering of the coating are different, and form a capacitive sensor;
- FIG. 6A illustrates the skin of an opening constituting an exemplary part according to the invention
- FIG. 6B illustrates the lining of an opening constituting an exemplary part according to the invention
- FIG. 7 shows a section along A of Figure 6B, illustrating an anti-pinch system between the tailgate and the vehicle body, provided with a capacitive sensor;
- FIG. 8 illustrates an example of a component constituting a hatch-type opening, mounted on a vehicle, in the closed position
- FIG. 9 represents a section along A of FIG. 8, illustrating a tailgate opening control system provided with a capacitive sensor
- FIG. 10A and 10B illustrate an embodiment of touch sensor, in which the coating and coated with a varnish
- FIG. 11 shows a section along A of Figure 6B, illustrating an anti-pinch system between the tailgate and the vehicle body, forming a touch sensor
- FIG. 12 represents a section along A of FIG. 8, illustrating a system of tailgate opening control, equipped with a touch sensor.
- FIG. 1 illustrates an example of a body part 10 of a motor vehicle, plastic, having at least one face 20 provided with a coating 30.
- the body part 10 comprises means of connection 90 of the coating 30 to a measuring means 40 of a variation of an electrical parameter related to the coating 30.
- FIGS. 2A and 2B illustrate a detail of FIG. 1, in order to clearly illustrate the connection means 90 between the coating 30 and the measuring means 40.
- the coating 30 is a coating adapted to the outer plastic body parts. Thus, its formulation must in particular allow the coating 30 to be able to adhere to the plastic material (for example a treated polypropylene) of the part 10.
- the plastic material for example a treated polypropylene
- a primer conventionally used in a car body part paint line has a resistance greater than 30k ⁇ and less than 1 ⁇ .
- a superconductive coating is used, that is to say having a low electrical resistance, to carry an electrical signal and transmit any alteration of the latter.
- a superconductive coating is defined as a coating having a resistance of less than 20 k ⁇ .
- a coating having a resistance of less than 20 k ⁇ , preferably less than 5 k ⁇ , more preferably less than 3 k ⁇ , is used.
- the superconducting coating thus provides better conductivity on the surface of the workpiece 10.
- the coating 30 is a coating enriched with electrical conductive pigments.
- the amount of the pigments is defined according to the conductivity of the pigment used, therefore depending on the nature of the pigment.
- the fillers, conductive pigments can be chosen alone or in combination in the following group of charges: graphite in its various forms (tube, nanotubes, powders), metals such as copper, silver, iron, indium. .., in different forms (tube, powder, wire), graphite alloy and metal.
- the coating 30 comprises more than 10% by weight of pigments, preferably between 20% and 60% by weight.
- the particle size of the pigments is preferably less than 25 micrometers. Such a particle size also makes it possible to obtain better dispersibility and to increase the distribution of the graphite pigments in the coating.
- the coating 30 may be chosen from the following coatings:
- a primer that is to say the first coating applied on the surface of the piece in a paint line
- a base that is to say the coating applied on the primary in a paint line
- a varnish that is to say the coating applied on the base in a paint line
- the coating 30 is a primer for automobile body parts enriched with electrical conductive pigments.
- a base In a conventional painting process, a base, then a varnish, is applied to a primer to obtain a painted surface.
- the painting step of a motor vehicle part made of plastic generally comprises a surface treatment step, followed by steps of applying three different coatings on the part.
- a first coating called primary
- the primer provides a conductive coating for retaining and attracting the following coating layers by electrostatism.
- a second coating called base
- a third coating called varnish
- the coating 30 comprises:
- such a primer may comprise a mono- or bi-component polyurethane resin compound, conductive fillers of the carbon black type and an organic solvent of the xylene, butyl acetate or butyl glycol acetate type, and the primer may also comprise a solvent containing base of water, glycol ether and / or pyrrolidone;
- - charges of conductive pigments can be chosen alone or in combination in the following group of charges: graphite in its various forms (tube, nanotubes, powders), metals such as copper, silver, iron, indium ..., in different forms (tube, powder, wire), graphite alloy and metal, carbon black.
- the coating 30 may be applied to a conductive primer covering the face 20.
- the coating 30 may be covered with one or more other coatings 100.
- These other coatings 100 may be chosen alone or in combination from the following coatings:
- a base that is to say the coating applied on the primary in a paint line
- a varnish that is to say the coating applied on the base in a paint line; preferably the varnish is an antifouling varnish, to avoid an erroneous detection due to the presence of disturbing element of the rain, dirt ... type;
- the coating 30, or the succession of coatings can also be covered with a plastic wall, allowing optimum protection of the coating 30.
- FIGS. 2A and 2B illustrate a detail of FIG. 1, in order to clearly illustrate the connection means 90 between the coating 30 and the measuring means 40.
- connection means 90 "pass through” the thickness of the part 10.
- a recess is provided during the molding of the part 10, or the recess is made after molding. and by machining.
- the connection means 90 are then passed through this recess in order to reach the coating 30.
- Another solution consists of overmolding a metal insert acting as a connection means 90. This solution allows simple assembly, and ensures a good contact between the coating and the coating 30.
- connection means 90 come into contact with the coating 30 at the edge of the workpiece.
- the coating 30 is extended to a non-visible zone of the part 10, in order to come into contact with the connection means 90.
- the bodywork part 10 comprises connection means 90 for the coating 30 to a measuring means 40 the variation of the capacitance between the coating 30 and the electric potential of the earth 50.
- a measuring means 40 is known to those skilled in the art.
- the coating 30 forms the measuring electrode of a capacitive sensor 60, the electrical potential of the earth 50 forming the other electrode.
- the face 20 of the bodywork part covered by the coating 30 defines, with the measuring means 40 and the electric potential of the earth 50, a capacitive sensor 60 which, by detecting a change in capacitance of the sensor, to detect that a person or object 70 is approaching the face 20 of the coin.
- the measuring means 40 measures the capacitance variations between the earth and the measuring electrode, which is constituted by the coating 30. This capacity is modified for example when a part of the body of a person 70 touches the coating 30, or approaches sufficiently close to the coating 30, the person 70 being itself capacitively connected to the ground via the ground.
- this capacitive type embodiment when a person or an object 70 approaches the coating 30, or when the coating 30 itself approaches a person or an object 70, this induces a variation capacitance between the two electrodes (the earth and the measuring electrode). This variation is detected by the measuring means 40 which sends an instruction to a control unit 80. Examples of embodiment
- Figures 4A to 5B illustrate two embodiments.
- the X, Y and Z axes correspond to the usual orientation axes of motor vehicles:
- X longitudinal axis X (depending on the length of the vehicle), the X axis facing towards the rear of the vehicle;
- ⁇ Y transverse axis Y (depending on the width of the vehicle);
- the coating 30 is applied to the non-visible face 20 of the part 10.
- the visible face is covered successively, and conventionally, by three coatings 100: a primer, a base and a varnish.
- the coating 30 is a conductive metal film applied on the non-visible face of the outer part 10.
- the part 10 comprises on its non-visible face, turned towards the inside of the vehicle, a coating 110 forming an electromagnetic shield, so as to detect a variation of capacity on one side of the room. This coating 110 also improves the sensitivity of the measurement, because in fact, the measurement is less subject to disturbances.
- the coating 110 is connected to the mass of the vehicle, in order to fulfill perfectly its role of electromagnetic shield.
- the coating 30 is applied on the visible face 20 of the part 10.
- the coating 30 is covered with two other coatings 100.
- the coating 30 is a primer covered with a base and a varnish.
- the base may be of the polyurethane type.
- Such a base may comprise, for example, a mono- or bicomponent polyurethane system, coloring pigments (for example TiO 2), flakes (for example of the aluminum type) and talc or calcium carbonate type fillers.
- the varnish may be of the polyurethane type.
- Such a varnish may comprise for example a mono or bi component polyurethane system, optionally with an acrylic resin.
- the capacitive sensor 60 constitutes an anti-pinch system for an opening of a motor vehicle.
- FIG. 6A illustrates the skin 12 of the hatch-type opening, which constitutes the visible face of the tailgate 10.
- FIG. 6B illustrates the lining 14 of the hatch-type opening, which constitutes the non-visible face of the tailgate 10.
- the coating 30 is applied on the periphery of the liner, and on the visible face 20 of the liner (the other side is attached to the skin 12).
- This face constitutes an inner face, that is to say a face turned towards the inside of the vehicle, when the tailgate 10 is mounted and closed on the vehicle.
- the coating 30 is applied to the surface defined by the inner contour of the sealing strip and the outer contour of the opening.
- the coating 30 is applied in the non-visible technical areas of the liner 14 which is delimited by a zone from the bottom of the upright to the collages of the glass and skin 12.
- Figure 7B shows a section along A of Figure 6B, illustrating the anti-pinch system between the tailgate 10 and the body 120 of the vehicle.
- the anti-pinch system can function as a capacitive sensor, that is to say by remote detection, without contact with the person or the object 70.
- the measuring means 40 When the measuring means 40 detects a variation of capacity, it sends an instruction to a control unit 80 making it possible to stop or even reverse the operation of the tailgate 10.
- the capacitive sensor 60 constitutes a control system for opening an opening leaf of a motor vehicle.
- Figure 8 illustrates a hatch type opening, mounted on a vehicle, in the closed position.
- the coating 30 is applied in the police plate area; on a hidden side (near the lighting) seen from the rear of the vehicle.
- This face, usually not coated with paint, is an outer face, that is to say a side facing the outside of the vehicle, when the tailgate 10 is mounted and closed on the vehicle.
- the coating 30 is applied to a visible surface in the form of decoration while fulfilling its technical function.
- FIG. 9B represents a section along A of FIG. 8, illustrating the opening control system of the tailgate 10.
- the aperture control system can function as a capacitive sensor, i.e. by remote sensing, without contact with the body part of a person 70.
- the measuring means 40 When the measuring means 40 detects a variation of capacity, it sends an instruction to a control unit 80 for actuating the opening of the tailgate 10.
- the bodywork part 10 comprises connection means 90 for the coating 30 to a measurement means 40 for the variation of the electrical charges of the coating 30.
- a means 40 is known to specialists.
- the coating 30 forms a surface of accumulation of electric charges. When a part of the body of a person 70 touches the coating 30, part of its charges is transferred to the person 70, or vice versa, being itself connected to the ground via the ground.
- this touch-type operation when a person 70 touches the coating 30, it modifies the electrical charges of the coating 30 which constitutes a touch sensor 60 with the measuring means 40. This modification is detected by the measuring means 40 which sends an instruction to a control unit 80.
- Figures 10A to 10B illustrate an exemplary embodiment.
- the X, Y and Z axes correspond to the usual orientation axes of motor vehicles, as described above.
- FIG. 10B shows the detail at the level of the connection
- the coating 30 is applied to the visible face 20 of the part 10.
- the coating 30 is covered with a second coating 100, such as an antifouling varnish.
- the coating 30 may be a conductive decorative film.
- the anti-pinch system can function as a tactile sensor, that is to say by contact with a foreign body 70 ( hand, arm, head, or object), as shown in Figure 11.
- the measuring means 40 When the measuring means 40 detects a change in electrical charges of the coating 30, it sends an instruction to a control unit 80 for stopping or reversing the operation of the tailgate 10.
- the senor 60 constitutes a control system for opening an opening leaf of a motor vehicle.
- the aperture control system may function as a touch sensor, i.e. by contact with a body part of a person 70 (one hand or one finger).
- the measuring means 40 When the measuring means 40 detects a change in electrical charges of the coating 30, it sends an instruction to a control unit 80 for actuating the opening of the tailgate 10.
- the part 10 is a mobile spoiler, or aerodynamic flaps ("active shutter").
Landscapes
- Switches That Are Operated By Magnetic Or Electric Fields (AREA)
- Paints Or Removers (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR1662491A FR3060470B1 (fr) | 2016-12-15 | 2016-12-15 | Piece de carrosserie de vehicule automobile comportant un revetement formant un capteur electrique |
| PCT/FR2017/053486 WO2018109340A1 (fr) | 2016-12-15 | 2017-12-11 | Pièce de carrosserie de véhicule automobile comportant un revêtement formant un capteur électrique |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| EP3555403A1 true EP3555403A1 (fr) | 2019-10-23 |
Family
ID=58401738
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP17821706.3A Withdrawn EP3555403A1 (fr) | 2016-12-15 | 2017-12-11 | Pièce de carrosserie de véhicule automobile comportant un revêtement formant un capteur électrique |
Country Status (3)
| Country | Link |
|---|---|
| EP (1) | EP3555403A1 (fr) |
| FR (1) | FR3060470B1 (fr) |
| WO (1) | WO2018109340A1 (fr) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR3090678A1 (fr) | 2018-12-21 | 2020-06-26 | Compagnie Plastic Omnium | Composition pour revêtement tactile |
| FR3097801B1 (fr) * | 2019-06-25 | 2022-10-14 | Plastic Omnium Cie | Procédé de fabrication d’une pièce de carrosserie comprenant un dispositif électrique |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB0702470D0 (en) * | 2007-02-09 | 2007-03-21 | Delphi Tech Inc | Control system and method for a powered panel |
| DE102011111208A1 (de) * | 2011-08-20 | 2013-02-21 | Brose Fahrzeugteile Gmbh & Co. Kommanditgesellschaft, Hallstadt | Berührungslose Betätigung eines Aktors in einem Fahrzeug |
-
2016
- 2016-12-15 FR FR1662491A patent/FR3060470B1/fr not_active Expired - Fee Related
-
2017
- 2017-12-11 EP EP17821706.3A patent/EP3555403A1/fr not_active Withdrawn
- 2017-12-11 WO PCT/FR2017/053486 patent/WO2018109340A1/fr not_active Ceased
Also Published As
| Publication number | Publication date |
|---|---|
| FR3060470A1 (fr) | 2018-06-22 |
| FR3060470B1 (fr) | 2019-10-18 |
| WO2018109340A1 (fr) | 2018-06-21 |
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