EP3535469A1 - Dispositif anti-pincement de type capteur capacitif pour ouvrant de véhicule automobile - Google Patents
Dispositif anti-pincement de type capteur capacitif pour ouvrant de véhicule automobileInfo
- Publication number
- EP3535469A1 EP3535469A1 EP17804616.5A EP17804616A EP3535469A1 EP 3535469 A1 EP3535469 A1 EP 3535469A1 EP 17804616 A EP17804616 A EP 17804616A EP 3535469 A1 EP3535469 A1 EP 3535469A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- opening
- disturbing
- capacitive sensor
- support
- vehicle
- 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- Withdrawn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
- E05F15/40—Safety devices, e.g. detection of obstructions or end positions
- E05F15/42—Detection using safety edges
- E05F15/46—Detection using safety edges responsive to changes in electrical capacitance
-
- 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
- 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
- E05Y2900/546—Tailboards, tailgates or sideboards opening upwards
-
- 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 present invention relates to the field of the automotive industry, and more particularly to an anti-pinch device, of the capacitive sensor type, for a motor vehicle door.
- an anti-pinch device of the capacitive sensor type, for a motor vehicle door.
- Such a device makes it possible to prevent jamming of an object obstructing between the opening and at least one adjacent fixed element when closing the door, in particular in the case where this object is a part of the door body. 'an user.
- Such openings can be equipped with anti-pinch devices integrated directly into the engine. These devices can detect overcurrent in the motor generated by an obstacle when closing the door. Once this overcurrent is detected, the device can reverse the engine torque to stop the pinching of the obstacle and even better, to release it.
- Such openings may also be equipped with anti-pinch devices comprising resistive sensors positioned at the periphery of the opening at the side edges.
- sensors are based on a variation of distance between two son: in case of approximation of the son son, caused by the presence of an obstacle such as a finger, a hand or any member of the human body, the device stops the closing the tailgate.
- Anti-pinch devices including capacitive sensors are also known. Many capacitive sensors are known in the prior art. For example, US 6377009 discloses a system for preventing the pinching or trapping of a foreign object when closing an element of a vehicle by the use of a capacitive sensor.
- a capacitive sensor makes it possible to detect at a short distance a variation in electrical capacitance due to the presence of an object or the presence of an object in the detection field of the sensor.
- such sensors thus detect, by contact or before contact, the presence of an object entering the detection field, by detecting a variation in electrical capacitance.
- the device then stops closing the tailgate before the obstacle is pinched between the opening and the vehicle body.
- Such sensors can be used to detect the presence of obstacles in many types of automobile closures such as power windows, sunroofs, side doors, sliding doors, tailgates.
- Such capacitive sensors have the advantage of being able to detect at a short distance the presence of all types of objects or materials, because they are sensitive to metals and to non-metals.
- a capacitive sensor is based on the capacitor principle, whose capacity depends in particular on the nature of the dielectric medium separating its electrodes and the distance separating them.
- this dielectric medium is air.
- any object having a different dielectric constant or relative permittivity (that of air is 1) brought near the electrode causes a detectable variation (for example, the permittivity of the human body, is very close to that of the water that is 81). Detection of this variation makes it possible to detect the presence of the object.
- One of the electrodes of the capacitor forming the sensor may consist of conductive wires or films, in particular metal.
- the "sensitive area” is the area where there is a risk of pinching. This is particularly, for a rear door, the area between the periphery of the opening and the body.
- the elements disturbing the detection field, and forming part of the vehicle and more particularly of the opening are mainly disturbing elements (for example elements containing a metal such as steel, copper or chromium). This is particularly for a rear opening of the hinge zones, the lock zone and cylinder areas.
- the wires forming the electrodes are interrupted.
- This solution therefore does not detect an object in the entire sensitive area, because it does not detect an object in the disturbance zones.
- the object of the invention is to remedy these drawbacks by providing an anti-pinch system for opening a motor vehicle, making it possible to detect an object over a greater part of, or even all, the peripheral edge of the opening.
- the anti-pinch system for an opening comprises a capacitive sensor and at least one device for protecting the detection field of the capacitive sensor against disturbances induced by disturbing elements of the sash.
- the protection device comprises a device for bypassing the disturbing elements adapted to prevent a disturbing element from being situated between the capacitive sensor and the body when the system is mounted on the vehicle.
- This anti-pinch system thus makes it possible to ensure operation of the capacitive sensor even in zones comprising disturbing elements.
- This system allows a continuity of detection on the entire peripheral edge of the opening.
- this system can be mounted simply on existing openings.
- the system may further include one or more of the following features, taken alone or in combination:
- the anti-pinch system comprises an element for grounding the disturbing elements
- the bypass member comprises a support intended to be fixed on a disturbing element, said support comprising at least one so-called internal face, facing the disturbing element once mounted on the disturbing element, and at least one so-called face; external ;
- the external face carries at least one electrode of the capacitive sensor generating a detection field
- the internal face carries the earthing member
- the support forms a sleeve adapted to envelop a cylinder end of the opening
- the support is made of a material for electrical insulation of the interfering element on which the support is fixed;
- the grounding element comprises at least one wire connected to the disturbing elements and to the vehicle ground.
- the invention also relates to an opening of a motor vehicle, comprising at least one anti-pinch system according to the invention.
- the opening comprises an anti-pinch system according to the invention for each disturbing element of the opening placed in the detection field generated by the capacitive sensor.
- the disturbing elements can be chosen from at least one of the following elements: the hinge zones, the hinge zones, the jacks, and the lock zone.
- Figure 1 illustrates, seen in profile, three open positions of a tailgate
- FIGS. 2A and 2B illustrate the operating principle of a capacitive sensor mounted on a tailgate
- FIG. 3 illustrates an anti-pinch system according to the invention.
- FIG. 4 illustrates an example of integration of the anti-pinch system in the vicinity of a tailgate jack.
- An exemplary embodiment of an anti-pinch system 10 based on a capacitive sensor for opening a motor vehicle is described.
- an opening 20 is rotatable between a fully open position (c) and a closed position (a), through an intermediate position (b).
- FIGS. 2A and 2B illustrate the principle of operation of a capacitive sensor mounted on an opening 20 of a motor vehicle: when an object 30 enters the detection field 70 of a capacitive sensor 40, this object 30 disrupts the field of detection 70. This disturbance is detected, making it possible to stop the closing of the opening 20 to avoid a pinching of the object 30.
- FIG. 3 which describes an anti-pinch system 10 for opening 20 of a motor vehicle.
- This system 10 makes it possible to determine the presence of an object 30 on the path, or in the vicinity, of the opening 20.
- the opening 20 is a motor vehicle tailgate.
- the anti-pinch system 10 comprises a capacitive sensor 40, and at least one protection device 50 of the detection field of the capacitive sensor against disturbances induced by disturbing elements 60 of the opening, placed in the detection field 70 generated by the capacitive sensor 40.
- the protection device 50 comprises a bypass member 80 of the disturbing elements 60 adapted to prevent a disturbing element 60 from being situated between the capacitive sensor 40 and the body 90 when the system 10 is mounted on the vehicle.
- the protection device 50 may also include a grounding member 100 of the disturbing elements 60.
- the capacitive sensor 40 is of a known type, and will not be described in more detail in the description.
- the capacitive sensor 40 generally comprises two electrodes 42 and 44, having a potential difference generating an electric field (constituting the detection field) 70 around the electrodes 42 and 44. These two electrodes 42, 44 of the capacitive circuit and created can be threads.
- the capacitive sensor 40 may comprise a single electrode. In this case, a capacitance variation between the electrode and the ground is detected (for example a person approaching the electrode).
- the protective device of the detection field 50 is a capacitance variation between the electrode and the ground.
- the protection device 50 of the detection field makes it possible to avoid disturbances, in particular electrical, induced by disturbing elements 60 of the motor vehicle opening 20 placed in or near the detection field 70 generated by the capacitive sensor 40.
- These elements are for example, for a motor vehicle tailgate, the hinge zones 62, the ball joints 64 (cylinders), the cylinders 66 of the vehicle, and the lock zone 68.
- These elements constitute metal masses. It is also noted that the last two elements mentioned are both metal masses, but also contain an actuator (motor) electrically powered so energized and generating interfering electromagnetic fields.
- the protection device 50 comprises a bypass member 80 of the disturbing elements 60.
- the protection device 50 also comprises a grounding member 100 of the disturbing elements 60.
- this member 80 is to prevent a disturbing element 60 from being situated between the capacitive sensor 40 and the body 90.
- the bypass member 80 forms a support intended to be fixed on a disturbing element 60 via a face 82, and to receive the electrodes 42, 44 of the sensor on an opposite face 84 or in the thickness, between the two faces 82 and 84.
- the support 80 once the anti-pinch system 10 mounted on the tailgate 20, is fixed on the jack 66, at the end located near the ball zone 64, located on the side of the tailgate 20.
- the support 80 has a face 82, or a set of faces, said internal, facing the disturbing element 60 once mounted on the disturbing element 60.
- the support 80 has a face 84, or set of faces, called external.
- the support 80 is advantageously made in the form of a sleeve, made of plastic or based on an elastomer allowing simple assembly (by threading, interlocking, ... ) on the cylinder 66.
- This support 80 is capable of wrapping one end of the cylinder 66, where are generally one of the ball joints and the assistance engine opening.
- the support 80 may be made of any material allowing electrical isolation of the disturbing element 60 on which the support is fixed.
- the support 80 has on one of these external faces 84 intended to be turned towards the body 90, the electrodes of the capacitive sensor. In this way, the disturbing element 60 thus shod is no longer between the electrodes 42, 44 and the body 90, so in the area in which it is desired to detect the presence of an object 30.
- the electrodes 42, 44 of the sensor 40 may be positioned at the periphery of the opening 20, including at zones comprising disturbing elements 60.
- the earthing member 100 of the disturbing elements 60 The earthing member 100 of the disturbing elements 60.
- Conductive elements even not located between the sensor 40 and the body 90, can disturb the detection field 70 when they are located sufficiently close to the sensor 40. Such elements therefore constitute disturbing elements 60.
- grounding member 100 It is then possible to use a grounding member 100.
- the function of this member 100 is therefore to prevent such a disturbing element 60 from being able to cause disturbances of the detection field 70 of the sensor.
- This grounding member 100 thus makes it possible to avoid the formation of an electric field (when there is a motor in the jack, for example) disruptive of the detection field 70 of the sensor.
- This member 100 consists of at least one wire connected to disruptive disturbing elements 60 and the vehicle mass.
- the support 80 of the bypass member 80 comprises, on one of its internal faces 82 in contact with the jack 66, the wire connected to the mass of the vehicle, in order to put the ball and socket area 64 and / or the cylinder 66 to the ground.
- the support 80 is shod on the jack, and the electrodes 42, 44 of the capacitive sensor are continuous along the edge of the tailgate 20, even at the jack 66.
- the support 80 is shod on the jack 66, but the electrodes 42, 44 of the capacitive sensor 40 are not continuous all along the edge of the tailgate 20: they are interrupted at the disturbing elements 60, where it is positioned protection devices 50.
- the support 80 of the protection device 50 comprises connection means to the electrodes of the capacitive sensor, and at least one wire connected to the vehicle ground.
- the support 80 comprises in the upper part (part of the support farthest from the ball-and-socket zone 64), connection means to the electrodes of the sensor. Electrical electrodes follow the periphery of the support 80, remaining opposite the body 90 once the system 10 mounted on the vehicle, to its lower part where there are other means of connection.
- the invention also relates to an opening 20 of the tailgate type assistance cylinder, comprising at least one anti-pinch system 10 according to the invention, preferably a system 10 for each disturbing element 60 of the tailgate 20 placed in the detection field 70 generated by the capacitive sensor 40: the zones of the hinges 62, the zone of the lock 68, the jacks 66 and the hinged zones 64.
- the actuator cylinder 66 is motorized, and mounted at a first end 66A on the tailgate 20, for example by means of a ball and a support plate 65 (forming the ball zone 64).
- the other end 66B of the motorized jack is intended to be mounted on the body 90 of the vehicle, for example by means of a ball joint.
- the distance between the sensor 40 and these metal parts 60 is greater than 20mm.
- the tailgate 20 therefore comprises at least one anti-pinch system 10 for opening 20 of a motor vehicle, as described above.
- the bypass member 80 enables the electrodes 42, 44 to be moved away from a disturbing element 60.
- FIG. 4 illustrates such a system 10 at the level of the ball-and-socket zones 64 and cylinder 66.
- the by-pass member 80 of the anti-pinch system 10 makes it possible to move the sensor 40 away from these zones, and to bypass the jack so that this the last is no longer between the sensor 40 and the body 90.
- the support 80 is fixed on the cylinder, preferably at the end located near the ball joint, the side of the tailgate 20 and not the side of the body 90.
- the sensor electrodes 42, 44 are positioned between the liner and the tailgate skin 20 at the periphery of the tailgate, near the edge.
Landscapes
- Power-Operated Mechanisms For Wings (AREA)
- Switches That Are Operated By Magnetic Or Electric Fields (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR1660701A FR3058439B1 (fr) | 2016-11-04 | 2016-11-04 | Dispositif anti-pincement de type capteur capacitif pour ouvrant de vehicule automobile |
| PCT/FR2017/053008 WO2018083422A1 (fr) | 2016-11-04 | 2017-11-02 | Dispositif anti-pincement de type capteur capacitif pour ouvrant de véhicule automobile |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| EP3535469A1 true EP3535469A1 (fr) | 2019-09-11 |
Family
ID=58669845
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP17804616.5A Withdrawn EP3535469A1 (fr) | 2016-11-04 | 2017-11-02 | Dispositif anti-pincement de type capteur capacitif pour ouvrant de véhicule automobile |
Country Status (5)
| Country | Link |
|---|---|
| EP (1) | EP3535469A1 (fr) |
| CN (1) | CN110036174B (fr) |
| FR (1) | FR3058439B1 (fr) |
| MA (1) | MA46782A (fr) |
| WO (1) | WO2018083422A1 (fr) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR3098785A1 (fr) * | 2019-07-15 | 2021-01-22 | Compagnie Plastic Omnium Se | Procédé de fabrication d’un élément de carrosserie muni d’une piste conductrice |
| DE102020108934A1 (de) * | 2020-03-31 | 2021-09-30 | Bayerische Motoren Werke Aktiengesellschaft | Heckklappenanordnung für ein Kraftfahrzeug und Verfahren zum Betreiben einer Heckklappenanordnung |
| US12138997B2 (en) | 2021-11-19 | 2024-11-12 | Honda Motor Co., Ltd. | Pinch sensor assembly, vehicle door having same and manufacturing method thereof |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6377009B1 (en) | 1999-09-08 | 2002-04-23 | Harald Philipp | Capacitive closure obstruction sensor |
| DE10220725C1 (de) * | 2002-05-07 | 2003-04-03 | Metzeler Automotive Profile | Vorrichtung zum Erkennen eines Hindernisses in dem Öffnungsbereich eines bewegbaren Schließelements eines Kraftfahrzeugs |
| GB2423822A (en) * | 2005-03-02 | 2006-09-06 | Automotive Electronics Ltd Ab | Capacitive proximity sensor with reduced sensitivity to water trickles |
| DE102006019710B4 (de) * | 2006-04-27 | 2010-03-11 | Webasto Ag | Sensorgesteuerte Einklemmschutzvorrichtung und Kraftfahrzeug |
| US9705494B2 (en) * | 2009-08-21 | 2017-07-11 | Uusi, Llc | Vehicle assemblies having fascia panels with capacitance sensors operative for detecting proximal objects |
| US9051769B2 (en) * | 2009-08-21 | 2015-06-09 | Uusi, Llc | Vehicle assembly having a capacitive sensor |
| DE102012107116A1 (de) * | 2012-08-02 | 2014-02-06 | Brose Fahrzeugteile Gmbh & Co. Kommanditgesellschaft, Hallstadt | Verfahren zur Steuerung einer Verstellbewegung eines Fahrzeugschließelements mit Kollisionsvermeidung für einen Schlossbereich und Einklemmschutzsystem |
| DE102013018628A1 (de) * | 2013-11-06 | 2015-05-07 | Brose Fahrzeugteile Gmbh & Co. Kommanditgesellschaft, Hallstadt | Einklemmschutz für eine verstellbare Fahrzeugtür |
-
2016
- 2016-11-04 FR FR1660701A patent/FR3058439B1/fr not_active Expired - Fee Related
-
2017
- 2017-11-02 EP EP17804616.5A patent/EP3535469A1/fr not_active Withdrawn
- 2017-11-02 WO PCT/FR2017/053008 patent/WO2018083422A1/fr not_active Ceased
- 2017-11-02 MA MA046782A patent/MA46782A/fr unknown
- 2017-11-02 CN CN201780067006.2A patent/CN110036174B/zh not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| CN110036174A (zh) | 2019-07-19 |
| MA46782A (fr) | 2019-09-11 |
| CN110036174B (zh) | 2021-05-28 |
| FR3058439A1 (fr) | 2018-05-11 |
| WO2018083422A1 (fr) | 2018-05-11 |
| FR3058439B1 (fr) | 2018-12-07 |
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