DE102017123065A1 - Door handle with sensors - Google Patents

Abstract

The invention relates to a door handle (10) for a movable part (101), such as a door, flap or lid in a vehicle (100) with an electronics unit (15), at least for data communication with a vehicle-side system (103) or a The electronic unit (15) is arranged in a recess (11) in the door handle (10). According to the invention, the electronic unit (15) has at least one antenna (17) and one capacitive proximity sensor (18). wherein in particular the antenna (17) for wireless data communication with the mobile handset (52) is used and the capacitive proximity sensor (18) is suitable for metrological detection of an approach of an operator.

Description

The present invention is directed to a door handle for a movable part, such as a door, flap or lid in a vehicle according to the preamble of the main claim. Furthermore, the invention also includes an inventive door handle system according to the preamble of the corresponding independent claim and a method for operating a door handle system according to the preamble of the independent method claim.

Door handles for vehicles in various forms are known from the prior art. Such door handles usually serve the operator of a vehicle in order to ensure access to the vehicle from the outside, the door handles themselves usually being fastened to a vehicle door (in this case a moving part). To improve the comfort of the vehicle, such door handles are equipped with electronic components that z. B. a keyless (meaning without a mechanical key) grant access to the vehicle. Thus, the electronic components are housed protected from the external environmental influences on the vehicle, they can be arranged in a recess in the door handle. Due to the existing electronic components, however, it can also lead to malfunction, high energy consumption and simple manipulation.

Starting from the known prior art, it is an object of the present invention to provide a door handle, as well as a door handle system and a method for operating the door handle system, which at least partially overcome the disadvantages of the prior art. It is likewise preferably an object of the invention to improve the comfort on the vehicle, in particular for keyless access. Preferably, it is also an object of the present invention to avoid malfunctioning in a keyless access to the vehicle, whereby preferably also the security and the manipulation possibilities are improved.

This object is achieved by a door handle with the features of the main claim, in particular from the characterizing part, and with the door handle system with the features of independent claim 22, in particular from the characterizing part. Also, to solve the problem, a method for operating a door handle system, with the features of the independent method claim, in particular from the characterizing part proposed. In the dependent device and method claims preferred developments of the invention are listed. Features which are disclosed for the devices according to the invention (door handle / door handle system) also apply to the operating method according to the invention and vice versa, so that reciprocal reference can be made within the scope of the respective disclosure. In addition, the inventive method can be realized with the door handle and / or door handle system according to the invention.

The door handle according to the invention serves for actuating a movable part, such as. A door, flap or lid or the like, in a vehicle by an operator. In this case, the door handle is preferably arranged on the movable part itself. The door handle further comprises an electronic unit serving at least for data communication with a vehicle-side system or a mobile handset. The electronics unit is further arranged in a recess in the door handle, whereby it is housed well protected against environmental influences. In order to improve the comfort of the door handle, it is provided according to the invention that the electronic unit comprises at least one antenna and a capacitive proximity sensor, wherein in particular the antenna is used for wireless data communication with the mobile handset and the capacitive proximity sensor suitable for metrological detection of an approach of an operator is. By the existing capacitive proximity sensor, it is possible (only then) to trigger a vehicle-side function when the proximity sensor has detected a corresponding approach of an operator by measurement. In this vehicle-mounted function, it may be z. B. to act an opening signal for a door lock and / or an alarm function for the mobile handset. Through the existing antenna and a wireless data communication with the mobile handset is possible, creating z. B. an electronic access code can be exchanged data technology. Thus, the door handle according to the invention can be used as part of a keyless entry system (both active and passive keyless entry). In the active keyless entry system, the operator still has to trigger an action on the mobile handset, whereby data communication between the mobile handset and the door handle takes place through the existing antenna. If in this case the correct access code is exchanged, an opening signal for an electromechanical door lock can also be generated by approaching or intervening in the door handle so that the movable part can be opened without further effort. In a passive keyless entry system, the approach to the door handle or the intervention in the door handle can also be detected by a capacitive proximity sensor and then a data exchange via the antenna with the mobile handset - without further action of the operator - performed. Even so, can the movable Open part without further effort by the operator. In the mobile handset, it may, for. B. to a mobile device, a mobile PC or an ID transmitter (electronic identification transmitter) act.

In order to improve the functional reliability of the door handle according to the invention, it may further be provided that the electronic unit comprises the antenna on a first side and the capacitive proximity sensor on a second side, the first and second sides being opposite one another. The clear separation of the antenna on one side of the electronic unit and the capacitive proximity sensor on the other side of the electronic unit can also improve the security and the manipulation capability of the device. In this case, it is conceivable that the first side of the electronics unit faces away from the vehicle and the second side of the electronics unit faces the vehicle (see arrows P1 and P2). In this way it can be ensured that the measuring range of the capacitive proximity sensor is mainly directed towards the vehicle and not away from the vehicle. Thus, an unwanted approach of an operator to the door handle from the outside does not lead to a triggering of the vehicle-side function by the proximity sensor, which can also save considerable energy.

Furthermore, it is conceivable within the scope of the invention that the antenna of the electronic unit at least partially shields an electric field (meaning also an electromagnetic field) of the capacitive proximity sensor. Thus, a major portion of the electric field of the capacitive sensor may be directed toward the vehicle by (due to) shielding through the antenna. Thus, the antenna itself can serve as an (integrated) shielding element for the capacitive proximity sensor. This ensures that even only an approach to the door handle from the vehicle, d. H. if an operator grips into the recessed grip between the movable part and the door handle, it can be detected by the capacitive proximity sensor. The mere passing from the outside on the door handle thus does not lead to the triggering of a vehicle-side function by the capacitive proximity sensor.

It should also be mentioned at this point that, instead of a capacitive proximity sensor, a plurality of capacitive proximity sensors, which are preferably arranged one behind the other or arranged next to one another, can be completely or partially shielded by the antenna. Also, instead of one antenna, a plurality of antennas or a plurality of coils for shielding at least one capacitive proximity sensor can be used.

Be mentioned in this article that the door handle preferably as a plastic molding, in particular injection molded part, one or more parts can be performed. The use of plastic for the door handle according to the invention hardly affects the electromagnetic field generated by the electronic unit. In addition, complicated geometric structures for the door handle according to the invention can be produced in a cost-effective manner in a series production. The recess provided in the door handle can either be formed directly during the shaping of the door handle or be introduced by a machining process afterwards. If the door handle consists of several parts, the recess may also be provided in one or more parts of the door handle.

Furthermore, it is conceivable in the invention that the antenna of the electronic unit has at least one wire, which is preferably wound around a core of the antenna into a coil and the coil has a plurality of windings of the wire. Here, at least one separate winding of the wire is provided, which protrudes from the coil (one or both sides) and thus deviates significantly from the other windings of the coil in its geometric arrangement. This separate winding of the wire also serves to shield an electric field of the capacitive proximity sensor. This not only serves the coil with its windings, but also the separate winding of the antenna wire for shielding the electric field of the capacitive proximity sensor. Thus, a shielding of the electric field of the capacitive proximity sensor can be achieved by the existing antenna in a particularly simple manner. In addition, the entire geometric extent of the antenna can thus be significantly widened or enlarged by at least one or more separate windings. In addition, a simple geometric adaptation of the antenna by the separate windings can be made to the existing capacitive proximity sensor.

Furthermore, it is conceivable that the electronic unit has a carrier element, in particular in the form of a plastic injection-molded part, which serves at least for fastening the antenna and the capacitive proximity sensor. By the use of the support member so that the mechanical structure of the electronic unit can be improved. In addition, an automated assembly of the electronics unit itself and the electronics unit on the door handle, z. B. done by robots. By using the carrier element, it can further be provided that the coil of the antenna is fastened to the carrier element and at least one separate winding around a fastening element is guided. In this case, the fastening element is preferably a part of the carrier element, so that the one or more separate windings are mechanically fixedly arranged in the electronics unit and / or on the carrier.

It is also possible for the carrier element to have at least one or more fixing means for fastening the wire of the antenna, with which the wire is preferably fixable circumferentially on the carrier element. These additional fixing means serve to arrange the wire of the antenna geometrically clearly defined on the support element. Thus, the antenna and the windings of the coil of the antenna and the one or more separate windings can be wound automatically by a machine or robot on the support element. In addition, the wire can be protected thereby held on the support element. Preferably, the fixing means can be arranged on the outside of the carrier element, whereby overall the geometric dimensions of the antenna can be increased. As a result, the shield of the capacitive proximity sensor can be increased accordingly.

Advantageously, at least one separate winding of the antenna can be deflected by the fastening element. Thus, a clear geometric structure of the separate windings can be achieved by means of the fastener. Furthermore, it is conceivable that the separate winding forms a plane which can be arranged in particular parallel or obliquely to an electrode surface of the capacitive proximity sensor. Thus, the shielding of the antenna covers the electrode surface of the capacitive proximity sensor in parallel, whereby a clearly defined electric field can be generated by the proximity sensor.

In order to improve the functionality of the antenna, it may have a core, which is preferably constructed to be electrically conductive and / or magnetic, wherein the core preferably has ferrite, and the coil is wound around the core. It is advantageous if the coil is at least galvanic or material (meaning without contact with the core) is separated from the core. It has been found to be useful if the core is surrounded by the carrier element of the electronics unit, so that the windings of the coil outside (preferably without direct contact with the core) can be performed around the support element around. In particular, the automatic production of the door handle according to the invention can thus be further improved. Preferably, the coil of the antenna may have a longitudinal extent that corresponds substantially to a longitudinal extent of the separate winding. Thus, an optimal data communication between the antenna in the door handle and the mobile handset from the vehicle can be achieved.

Furthermore, it is conceivable that a longitudinal extent of the coil and a longitudinal extension of the separate winding in total substantially corresponds to the longitudinal extent of the capacitive proximity sensor. As a result, the capacitive proximity sensor can be realized over its entire length by the existing antenna comprising the coil and the separate windings. Thus, the electric field of the capacitive proximity sensor can be shielded over its entire length from the antenna.

In order to achieve optimum shielding of the capacitive proximity sensor by a simple structure of the antenna, it can be provided that at least one separate winding of the antenna is arranged in its geometric orientation substantially perpendicular to the windings of the coil. The winding axes of the coil and the separate windings are substantially perpendicular or orthogonal to each other. As a result, it is sufficient if only a separate winding protrudes from the coil in order to geometrically increase the entire antenna accordingly. It is also conceivable that at least one separate winding of the antenna is arranged in its geometric orientation substantially transversely to the winding of the coil. In this case, the separate winding may have at least one cross pattern or serpentine pattern in order to improve the shielding effect of the separate winding with respect to the capacitive proximity sensor.

In order to supply energy to the electronics unit of the door handle, it can have connection contacts which are formed and / or injected in particular in the carrier element and form a plug with the carrier element. In this case, the connection contacts may be angled and terminate transversely to a longitudinal extent of the carrier element. Since virtually the plug for the electronics unit is integrated in the carrier element, an electrical contacting of the entire electronics unit when inserted into the recess in the door handle can also be done. Thus, no additional assembly step for the production of the electrical connections of the electronics unit is necessary. In addition, the connection contacts can be arranged particularly stable in the carrier element, so that a stable mechanical structure is present.

In addition, at least one guide element for arranging the electronics unit in a housing or the recess in the door handle may be present on the carrier element, so that additionally or optionally to the plug a mechanical Attachment of the electronics unit by the guide elements is realized.

To be able to manufacture and assemble the electronics unit in a particularly simple manner, the carrier element can be constructed in at least two parts and preferably the core of the antenna can be clamped between two components of the carrier element. In this case, the two components of the carrier element can preferably be connected to one another by latching parts. In this case, the latching means can fix the two components of the support member positively and / or non-positively with each other. Ideally, the core of the antenna is inserted into a component and the further component of the carrier element is joined to the first component, thereby automatically locking the mentioned detent means and thus receiving the core of the antenna, in particular insoluble, in the carrier element. Subsequently, the wire of the antenna as well as the winding for the coil and the separate windings can be made around the support element. In a further production step, at least one electrode surface of the capacitive proximity sensor can also be fastened to the carrier element by means of holding means, which will be described in more detail below.

In order to optimally protect the electronics unit against moisture, it can be encased with a potting compound prior to installation or during installation in the door handle. It can also be provided a separate housing for the electronic unit, which can be filled with the potting compound. Ideally, all free spaces in the door handle are filled with potting compound, which also measurement errors of the capacitive proximity sensor can be additionally avoided.

Furthermore, it is conceivable according to the invention that an electrode surface of the capacitive proximity sensor can be U-shaped or H-shaped. Regardless of the geometric configuration of the electrode surface, this can be fixed in a form-fitting and / or force-locking manner by holding means on the carrier element. These holding means may be molded onto the carrier element like the fixing elements, latching means and guide elements. The holding means may consist of a shoulder-shaped projection, whereby the electrode surface can be fastened to the carrier element. The holding means itself can thus have an L-shaped extension.

In order to further improve the production of the door handle, the capacitive proximity sensor can be designed as a stamped part, in particular made of sheet metal and preferably extend partially or completely over the longitudinal extent of the support element. In this case, the stamped part - as already described - be configured U-shaped or H-shaped. Furthermore, it is conceivable that this stamped part is electrically connected directly to a terminal contact in the carrier element, so that it is possible to dispense with additional connecting elements.

It is also conceivable that the electronic unit additionally comprises a controller, in particular at least one microprocessor, in order to be able to control at least the antenna or the capacitive proximity sensor. The control can also be used for evaluating the measurement signals of the capacitive proximity sensor obtained and for data communication with the antenna. The controller itself can also be arranged on the carrier element. In addition, a circuit board may be present on which the controller is soldered.

In order to further improve the functionality of the door handle according to the invention, in addition to the electronics unit, at least one sensor element may be present on the door handle, as a result of which a vehicle-side function can be triggered. In this vehicle-mounted function, it may be z. B. to act as a closing signal in the passive keyless go system. It is conceivable that the sensor element is designed as a switching element, as well as buttons or grid or the like.

In the door handle according to the invention may be a rigidly arranged or movably arranged door handle, whereby a relative movement of the door handle to the movable part can be generated. If a movable door handle is used in the context of the invention, this can have at least one bearing element which provides a rotary or pivot bearing. Another bearing element for a movable door handle can provide in particular a linear guide. Also, a movable door handle can be configured not only as a pull handle, but as a folding handle or pull-folding handle.

Also, the invention is directed to a door handle system according to the independent apparatus claim. It is provided that the door handle according to the invention by a handle support, preferably on the inside of the movable part can be fastened. To attach the door handle externally to the moving part, at least one bearing member is provided on the door handle, which mechanically cooperates with the handle bracket to secure the door handle thereto. Preferably, the door handle is mounted rigidly or movably by the bearing elements in the handle part.

Furthermore, the invention is also directed to a method for operating a door handle system, wherein it is provided according to the invention that at least a partial electrical shielding of an electric field of the capacitive proximity sensor takes place through a part of the antenna. This allows the comfort as well as the operation of the Door handle system according to the invention - as previously described in detail - to be improved.

• 1 in einer Seitenansicht ein Fahrzeug mit zumindest einem erfindungsgemäßen Türgriffsystem,
• 2 eine schematische Schnittansicht durch ein erfindungsgemäßes Türgriffsystem, welches an einem beweglichen Teil des Fahrzeugs befestigt ist,
• 3 eine dreidimensionale Draufsicht auf eine Elektronikeinheit des erfindungsgemäßen Türgriffsystems,
• 4 eine dreidimensionale Seitenansicht auf die Elektronikeinheit aus 3 mit einem schematisch angedeuteten Gehäuse,
• 5 eine dreidimensionale Rückansicht auf die Elektronikeinheit aus den 3 und 4,
• 6 eine schematische Seitenansicht auf eine Elektronikeinheit mit einer Antenne ohne eine gesonderte Wicklung mit dem entstehenden elektrischen Feld eines kapazitiven Näherungssensors,
• 7 eine vergleichbare Schnittansicht der Elektronikeinheit aus 6, jedoch mit einer Antenne mit einer gesonderten Wicklung und einem zugehörigen elektrischen Feld des kapazitiven Näherungssensors,
• 8a eine schematische Draufsicht auf ein Kreuzmuster der gesonderten Wicklung der Antenne und
• 8b eine vergleichbare Draufsicht auf eine gesonderte Wicklung der Antenne aus 8a mit einem Schlangenmuster.

According to the invention, the features of the description and the claims and the device according to the invention and of the method according to the invention can be essential to the invention both individually and in the most diverse combinations. Further, measures improving the invention will be described in more detail below together with the description of the preferred embodiments of the invention with reference to FIGS. Show it:

• 1 in a side view of a vehicle with at least one door handle system according to the invention,
• 2 a schematic sectional view through a door handle system according to the invention, which is attached to a movable part of the vehicle,
• 3 a three-dimensional plan view of an electronic unit of the door handle system according to the invention,
• 4 a three-dimensional side view of the electronics unit 3 with a schematically indicated housing,
• 5 a three-dimensional rear view of the electronics unit from the 3 and 4 .
• 6 1 a schematic side view of an electronic unit with an antenna without a separate winding with the resulting electric field of a capacitive proximity sensor,
• 7 a comparable sectional view of the electronics unit 6 but with an antenna with a separate winding and an associated electric field of the capacitive proximity sensor,
• 8a a schematic plan view of a cross pattern of the separate winding of the antenna and
• 8b a comparable plan view of a separate winding of the antenna 8a with a snake pattern.

In the figures, the same reference numerals are used for the same technical features for different embodiments.

In the 1 is a vehicle 100 , in particular in the form of a motor vehicle, with the door handles according to the invention 10 or door handle systems according to the invention 50 shown. Here are the door handles 10 as rigid or movable door handles 10 on the moving part 101 be arranged. At the moving part 101 These are exterior vehicle doors. By the operation of the door handle 10 If the central locking is open, an actuation of a door lock takes place 102 , which as a purely mechanical lock 102 with a movable door handle 10 and as an electromechanical door lock 102 with a rigid door handle 10 can be designed. Further, the vehicle points 100 also a vehicle-side system 103 in the form of a security system, access control system, central locking or the like, which is in data communication with the door handle system according to the invention 50 can stand. For keyless operation of the door handle system according to the invention 50 is a mobile handset 52 , z. B. provided as a mobile device or ID transmitter. This mobile handset 52 should replace the mechanical key.

In the 2 is a schematic sectional view of the door handle system according to the invention 50 on the moving part 101 shown. As you can see, the door handle becomes 10 over the handle carrier 51 , which itself directly to the moving part 101 (Fixed by fastening means, not shown) is fixed. For fastening the door handle 10 on the handle carrier 51 are at least two bearing elements 12 and 13 on the door handle 10 provided by way of example. Since it is the illustrated door handle 10 in 2 around a movable door handle 10 is (at a first end of the handle 10 ) on the first bearing element 12 a swivel or pivot bearing 12.1 available, which the door handle 10 around a pivot 12.2 or a swivel path 12.2 leads. A second bearing element 13 is at the opposite end of the door handle 10 arranged and has a linear guide 13.1 as well as a driver 13.2 for the door lock 102 on. Overall, the second bearing element 13 L -shaped.

To the comfort of the door handle according to the invention 10 to improve is an electronics unit 15 provided in a recess 11 in the door handle 10 is arranged. The electronics unit 15 will be in the 3 to 7 shown in more detail and described below. In addition, in the door handle 10 out 2 a sensor element 14 provided in the form of a button, the z. B. can generate a closing signal in a Keyless Passive Go system. In this case, the sensor element 14 in the recess 11 in the door handle 10 through a separating element 11.1 from the electronics unit 15 be structurally separate. Both the sensor element 14 as well as the electronics unit 15 can via lines 11.2 be connected to the rest of the vehicle electronics. How out 2 is still clearly recognizable, is the handle carrier 51 on an inside 101.2 , ie inside, on the moving part 101 attached, whereas the door handle according to the invention 10 mainly on an outside 101.1 (outside) of the moving part 101 protrudes. The two arrows P1 and P2 indicate the direction away from the vehicle and toward the vehicle. So the door handle 10 is built particularly robust, is the recess 11 preferably with a potting compound 21 which also shed the electronics unit 15 partially or completely enveloped, as well as example, the additional sensor element 14 ,

In the 3 to 5 is the electronics unit 15 with its carrier element 16 , an antenna 17 and a capacitive proximity sensor 18 shown. To an electrical connection of the electronics unit 15 to allow, are additional connection contacts 20 that are angled away from the support element 16 protrude, provided. The inventive structure of the electronics unit 15 preferably allows automatic manufacture and assembly with the antenna 17 and the capacitive proximity sensor 18 , There is a wire 17.1 the antenna 17 of at least one terminal contact 20 along the carrier element 16 by fixing elements 16.4 guided. In the middle area, measured at the longitudinal extent L the carrier element 16 , is the wire 17.1 to a coil 17.3 wound, the outside of the support element 16 is guided. Inside the coil 17.3 is a core 17.2 the antenna 17 provided, preferably by two components 16.1 and 16.2 the carrier element 16 is trapped. The two components 16.1 and 16.2 the carrier element 16 can self-locking means 16.5 be joined together positively and / or non-positively. Out of the coil 17.3 from the antenna 17 protrudes at least one separate winding 17.4 out through the wire 17.1 itself is formed. Preferably, the separate winding forms 17.4 a level 17.5 , which expediently parallel to an electrode surface 18.1 of the capacitive proximity sensor 18 lies (s. 5 ).

The separate winding 17.4 is about fasteners 16.3 on the carrier element 16 guided. In addition, the separate winding 17.4 also about the fixing elements 16.4 on the outside of the support element 16 held. In the 3 to 5 is the separate winding 17.4 U-shaped. In addition to this embodiment, other forms for the separate winding 17.4 conceivable, the z. Tie 8a and 8b are shown schematically. The fasteners 16.3 include a notch through which the wire 17.1 the separate winding 17.4 is carried out.

So that the electronics unit 15 from a protective housing 15.3 or a shell 15.3 can be surrounded or in the recess 11 from the door handle 10 can be safely inserted, are guide elements 16.6 on the carrier element 16 intended. In the present case, the guide elements 16.6 slot-like provided in the corresponding parts of the housing 15.3 or the door handle 10 can engage for attachment.

In the 4 is purely schematic the housing 15.3 dashed around the support element 16 shown. This case 15.3 can also with the already mentioned potting compound 21 be filled. For optimal separation between the antenna 17 and the capacitive proximity sensor 18 to get is the antenna 17 on a first page 15.1 and the capacitive proximity sensor 18 on a second page 15.2 the electronics unit 15 (S. 6 and 7 ) intended. This forms the first page 15.1 almost the top and the second side 15.2 the back of the electronics unit.

As in 4 As you can see, the distance from the connection of the wire is good 17.1 with the connection contacts 20 to the coil 17.3 about the same size as the longitudinal extension L1 the coil 17.3 , Also is the longitudinal extent L2 in the separate winding 17.4 as long as the longitudinal extent L1 the coil 17.3 , Also the area of the wire from the connection contacts 20 to the coil 17.3 can be a separate winding 17.4 represent in the context of the present invention, which is why in the 4 also this distance with the longitudinal extent L2 is marked. Ideally, the sum of the longitudinal extents of the coil corresponds L1 and the separate windings L2 the total length of the longitudinal extension L3 of the capacitive sensor 18 , This is an optimal shielding of the capacitive proximity sensor 18 through the antenna 17 possible. This is the measuring range or the electric field 18.2 of the capacitive proximity sensor 18 towards the vehicle (see arrow P2 ).

From the 5 is the back (look at the second page 15.2 ) of the electronics unit 15 to recognize. Here it becomes clear that in the present case, the capacitive proximity sensor 18 from an electrode surface 18.1 which is ideally made as a stamped part. For fastening the capacitive proximity sensor 18 on the carrier element 16 are appropriate holding means 16.8 provided, which are designed as particular L-shaped projections and a positive connection to the proximity sensor 18 form. The mounting of the capacitive proximity sensor 18 This makes it particularly easy, as this only on the back 15.2 must be placed and then in the direction of the longitudinal extension towards the plug has to be moved back and thereby automatically behind the holding means 16.8 is attached. At the same time in this case a contact between the electrode surface 18.1 and the connection contacts 20 follow in a mechanical way. In addition, this contact surface can also be soldered or welded.

In the 6 is purely schematic a side view of the electronics unit 15 with an electric field also shown schematically 17.2 of the capacitive proximity sensor 18 shown. To the effect of the separate winding 17.4 to clarify, was in the 6 unlike these 7 , As in 6 can be seen, the electric field points 18.2 of the capacitive proximity sensor 18 in the 6 a side part 18.4 (above the electronics unit 15 ) as well as a main part 18.3 which is mainly below the electronics unit 15 is trained on. Together this becomes the electric field 18.2 in 6 through the main body 18.3 and the side part 18.4 educated. Optional is in the 6 in the region of the carrier element 16 also the mentioned control 19 located.

Like in the 7 good in contrast to 6 can be seen, changed the shield of the separate winding 17.4 the antenna 17 the electric field 18.2 of the capacitive proximity sensor 18 , There is the electric field 18.2 out 7 now only from the main part 18.3 , on the back or second side 15.2 the electronics unit 15 is arranged. Thus, an operator's approaches from the outside on the first page 15.1 not through the capacitive proximity sensor 18 be detected metrologically. In the 6 and 7 is the fastener 16.3 rod-shaped, around which the separate winding 17.4 is guided.

In the 8a and 8b is the lead of the wire 17.1 the antenna 17 as a separate winding 17.4 in the form of an exemplary cross pattern 17.6 and snake patterns 17.7 shown.

The above explanation of the embodiments describes the present invention solely by way of example. Of course, individual features of the present invention, if technically feasible, can be combined freely with one another without departing from the scope of the present invention / claims.

LIST OF REFERENCE NUMBERS

10

door handle

11

recess

11.1

separating element

11.2

management

12

first bearing element

12.1

Swivel or pivot bearing

12.2

Pivot / swivel path

13

second bearing element

13.1

linear leadership

13.2

Carrier for door lock

14

sensor element

15

electronics unit

15.1

first page

15.2

second page

15.3

Housing / Case

16

support element

16.1

first component

16.2

second component

16.3

Fastening element for 17.4

16.4

Fixing element for 17.1

16.5

latching means

16.6

guide element

16.7

plug

16.8

Holding means for 18

17

Antenna for wireless data communication

17.1

wire

17.2

core

17.3

Coil with windings

17.4

separate winding

17.5

Level of 17.4

17.6

Cross pattern of 17.4

17.7

Serpent pattern from 17.4

18

Capacitive proximity sensor

18.1

electrode area

18.2

electric field

18.3

Bulk

18.4

next part

19

control

20

terminals

21

potting compound

50

Door handle system

51

handle support

52

mobile handset, z. B. mobile device or ID transmitter

100

Vehicle, in particular passenger car

101

moving part

101.1

Outside of 101

101.2

Inside of 101

102

Locks

103

vehicle-side system, safety system

L1

Longitudinal extension of the coil

L2

Longitudinal extension of the separate winding

L3

Longitudinal extension of the capacitive sensor

L

Longitudinal extension of 15, 16

P1

Arrow away from the vehicle

P2

Arrow towards the vehicle

Claims (23)

A door handle (10) for a moving part (101), such as a door, flap or lid in a vehicle (100) having an electronics unit (15) adapted for at least data communication with a vehicle-side system (103) or a mobile hand-held device (52 ), wherein the electronic unit (15) in a recess (11) in the door handle (10) is arranged, characterized in that the electronic unit (15) comprises at least one antenna (17) and a capacitive proximity sensor (18), in particular the Antenna (17) for wireless data communication with the mobile handset (52) is used and the capacitive proximity sensor (18) for metrological detection of an approach of an operator is suitable. Door handle (10) after Claim 1 , characterized in that the electronic unit (15) on a first side (15.1) comprises the antenna (17) and on a second side (15.2) the capacitive proximity sensor (18), wherein the first and second sides (15.1, 15.2) opposite are, in particular, the first side (15.1) of the electronic unit (15) facing away from the vehicle (100) and the second side (15.2) of the electronic unit (15) facing the vehicle (100). Door handle (10) after Claim 1 or 2 , characterized in that the antenna (17) of the electronic unit (15) at least partially shields an electric field (18.2) of the capacitive proximity sensor (18), so that a main part (18.3) of the electric field (18.2) of the capacitive proximity sensor (18) directed to the vehicle (100). Door handle (10) according to one of the preceding claims, characterized in that the antenna (17) of the electronic unit (15) has at least one wire (17.1) which preferably surrounds a core (17.2) of the antenna (17) to form a coil (17.3 ) and the coil (17.3) has a plurality of windings of the wire (17.1), wherein at least one separate winding (17.4) of the wire (17.1) protrudes from the coil (17.3) and an electric field (18.2) of the capacitive proximity sensor (18 ) shields. Door handle (10) according to one of the preceding claims, characterized in that the electronic unit (15) has a carrier element (16), in particular in the form of a plastic injection molded part, which serves at least for fastening the antenna (17) and the capacitive proximity sensor (18) and / or the electronics unit (15) has a carrier element (16), wherein the coil (17.3) of the antenna (17) is fastened to the carrier element (16) and the separate winding (17.4) is guided around a fastening element (16.3), wherein in particular, the fastening element (16.3) forms part of the carrier element (16). Door handle (10) according to one of the preceding claims, characterized in that the carrier element (16) for fixing the wire (17.19 of the antenna (17) at least one or more fixing means (16.4), whereby the wire (17.1) preferably circumferentially on the support element (16) is fixable, wherein in particular the fixing means (16.4) are arranged on the outside of the carrier element (16). Door handle (10) according to one of the preceding claims, characterized in that the separate winding (17.4) of the antenna (17) is deflected by the fastening element (16.3), wherein preferably the separate winding (17.4) forms a plane (17.5) is arranged in particular parallel or obliquely to an electrode surface (18.1) of the capacitive proximity sensor (18). Door handle (10) according to one of the preceding claims, characterized in that the antenna (17) has a core (17.2), wherein the core (17.2) preferably has ferrite and the coil (17.3) is wound around the core (17.2), wherein in particular the coil (17.3) is at least galvanically or materially separated from the core (17.2), wherein preferably the core (17.2) from the support element (16) of the electronic unit (15) is surrounded. Door handle (10) according to one of the preceding claims, characterized in that the coil (17.3) of the antenna (17) has a longitudinal extent (L1), which substantially corresponds to a longitudinal extent (L2) of the separate winding (17.4). Door handle (10) according to one of the preceding claims, characterized in that a longitudinal extent (L1) of the coil (17.3) and a longitudinal extent (L2) of the separate winding (17.4) in Sum substantially corresponds to the longitudinal extent (L3) of the capacitive proximity sensor (18). Door handle (10) according to one of the preceding claims, characterized in that the separate winding (17.4) of the antenna (17) is arranged in its geometric orientation substantially perpendicular to the windings of the coil (17.3). Door handle (10) according to one of the preceding claims, characterized in that the separate winding (17.4) of the antenna (17) in its geometric orientation substantially transverse to the windings of the coil (17.3) is arranged, in particular the separate winding (17.4 ) has at least one cross pattern or serpent pattern. Door handle (10) according to one of the preceding claims, characterized in that the electronic unit (15) has connection contacts (20), which are in particular in the carrier element (16) formed and with the carrier element (16) form a plug (16.7), preferably the connection contacts (20) are angled and terminate transversely to a longitudinal extent (L) of the carrier element (16). Door handle (10) according to one of the preceding claims, characterized in that the carrier element (16) has at least one guide element (16.6) for arranging the electronic unit (15) in a housing or the recess (11) in the door handle (10). Door handle (10) according to one of the preceding claims, characterized in that the carrier element (16) is at least two parts (16.1, 16.2) and preferably the core (17.2) of the antenna (17) between two components (16.1, 16.2) of the support element (16) is clamped, wherein preferably locking means (16.5) for connecting the at least two components (16.1, 16.2) of the carrier element (16) are present. Door handle (10) according to one of the preceding claims, characterized in that in the door handle (10) built-in electronic unit (15) is coated with a potting compound (21). Door handle (10) according to any one of the preceding claims, characterized in that an electrode surface (18.1) of the capacitive proximity sensor (18) is U-shaped or H-shaped and preferably form-locking by retaining means (16.8) on the support element (16) are attached. Door handle (10) according to one of the preceding claims, characterized in that the capacitive proximity sensor (18) as a stamped part, in particular made of sheet metal, and is preferably partially or completely over the longitudinal extent (L) of the support element (16). Door handle (10) according to one of the preceding claims, characterized in that the electronic unit (15) additionally comprises a controller (19), in particular at least one microprocessor, to control at least the antenna (17) or the capacitive proximity sensor (18). Door handle (10) according to one of the preceding claims, characterized in that in addition to the electronic unit (15) at least one sensor element (14) on the door handle (10) is present, whereby a vehicle-side function can be triggered, wherein preferably the sensor element (14) as a switching element is designed. Door handle (10) according to one of the preceding claims, characterized in that in a movable door handle (10) has a bearing element (12) is a rotary or pivot bearing (12.1) and a bearing element (13) as a particular linear guide (13.1). Door handle system (50) with a door handle (10) according to one of the preceding claims, wherein the door handle (10) on the movable part (101) by a handle support (51) can be fastened, characterized in that the handle support (51) on the inside of the movable part (101) can be fastened, in particular by fastening means, whereby the door handle (10) can be stored from the outside on the movable part (101), the door handle (10) preferably being rigid or movable in the handle carrier (51), preferably by at least one bearing element (12, 13) is stored. Method for operating a door handle system (50), in particular according to one of the preceding claims, comprising a door handle (10) for a movable part (101), such as a door, flap or cover in a vehicle (100), and an electronics unit (15 ), which serves at least for data communication with a vehicle-side system (103) or a mobile handset (52), wherein the electronic unit (15) in a recess (11) in the door handle (10) is arranged, wherein the electronic unit (15) at least one antenna (17) and a capacitive proximity sensor (18), characterized in that at least a partial electrical shielding of an electric field (18.2) of the capacitive proximity sensor (18) by a part of the antenna (17).

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