EP2791917B1 - Mobile identification transmitter with a metal-coated actuation element - Google Patents

Description

The invention relates to a mobile identification transmitter for activation of a safety system of a motor vehicle, in particular an access and / or driving authorization system, with a housing in which an electronic unit is arranged, which can be brought into communication with the motor vehicle side safety system, and at least one for a user accessible actuating element which is suitable for activating an electrical component of the electronics.

In the DE 10 2009 022 077 A1 discloses a mobile identification transmitter with actuators, which are suitable for activating an electrical component of electronics, which is located within the mobile identification transmitter. In this case, the actuating element is designed on its outer side with a metallization layer. This lifts everyone Actuator clear and shiny metallic from the plastic of the rest of the identification transmitter and gives a so-called "cool touch effect", which suggests a high-quality impression to the user. Furthermore, the actuating element is glued on the inside with a sealing element. Disadvantageously, it has been found that the fastening effect can subside. In addition, often a mounting frame is necessary, which surrounds the individual actuating elements and which ensures the necessary attachment of the actuating elements on the housing of the identification transmitter.

The DE 10 2005 014 563 A1 discloses an electronic key consisting of a two-part housing with metallic material buttons and a gasket.

The object of the present invention is to avoid the abovementioned disadvantages, in particular to provide a mobile identification transmitter which has the smallest possible number of components, whereby the manufacturing effort can be reduced and at the same time gives the identification transmitter a high-quality impression for the user.

The object of the invention is achieved by all features of claim 1. In the dependent device claims possible embodiments are shown. According to the invention, the actuating element is formed from a base body made of plastic, wherein the actuating element has on the outside a metallic coating and an inner surface which faces the electronics and is designed with at least one metal-free surface, and a sealing element made of a flexible plastic between the electronics and the Actuating element is arranged, wherein the free surface of the actuating element is attached to the sealing element. A special feature of the invention is that the actuating element is formed with a basic body made of plastic, wherein the user accessible and visible outside of the actuating element has a metallic coating. As a result, on the one hand good haptic properties are created upon actuation of the actuating element. On the other hand, the actuating element, in particular the base body, can be reliably fastened to the sealing element inside the housing due to its metal-free surface. There may be provided a plurality of free surfaces on the inner surface of the actuating element to a plurality of attachment points between the sealing element and the To create actuating element. This open space is not visible to the user. In addition, a fastening of the actuating element at its free surface is sufficient to produce or provide a mobile identification transmitter, in which a reliable hold of the actuating element on the housing of the identification transmitter is ensured.

The free surface of the actuating element is integrally connected to the sealing element. The actuator is applied only to the adjacent housing without an additional attachment is necessary, which means that the cohesive bond between the sealing element and the free surface is sufficient for the actuator is held within the housing of the identification transmitter.

Also, the invention comprises a mobile identification transmitter, in which a latching connection holds the free surface of the actuating element on the sealing element. The latching connection does not attack directly on the metallic coating, which could cause any disturbances to the metallic coating.

For example, the invention may provide that the free surface of the actuating element is ultrasonically welded to the sealing element. In this case, the connection is effected by heat, which is achieved by a high-frequency mechanical vibration, which arises between the components to be joined, here actuator and sealing element by molecular and interface friction. Advantageously, said vibrations are transmitted under pressure to the components to be connected. An advantage of this embodiment is that very short welding times can be achieved, which increases the cost-effectiveness in the production of the mobile identification transmitter according to the invention.

Similar advantages arise in the friction welding of the free surface of the actuating element with the sealing element, wherein the friction and the actuating element and / or the sealing element are set relative to each other in motion, at the same time touching the parts to be joined at their contact surfaces. The resulting friction causes heating and plasticization of the contacting materials.

In a further embodiment of the invention, the free surface of the actuating element is hot gas welded to the sealing element, wherein the opposing surfaces, in particular the free surface of the actuating element and the sealing element are first plasticized by hot gas and then joined together under pressure. For example, it is conceivable that the plastication takes place without contact via hot gas, which flows directly into the joining zones. For example, it can be provided that nitrogen is used as an inert gas, whereby oxidation of the melts is almost completely excluded during the plasticizing time. Thus, it can be advantageously avoided that an oxygen uptake takes place in the weld seam area.

In a further possibility of the invention can be provided that the free surface is laser welded to the sealing element. Advantageously, one of the joining partners, ie the sealing element or the basic body, is made of a material which is transparent to laser radiation. At the same time, the other joining partner is formed from a material that is designed to be absorbent for laser radiation. Advantageously, the joint to be joined together material to be joined, that is, the sealing element and the base body made of a thermoplastic material. According to the invention, the energy of the laser radiation can be introduced through the bonding partner transparent to the laser radiation into the joint plane in which the surfaces of sealing element and base body to be joined are located. The joining plane is the boundary layer area between the two joining partners. There, the electromagnetic energy from the absorbing joining partner can be converted almost lossless into heat energy. The introduced energy leads to plasticization of the absorbent joining partner. Via thermal conduction, the transparent joining partner is also plasticized. Advantageously, there is a direct contact between the sealing element and the main body, in particular the free surface, prior to the introduction of the laser radiation. As a result, sufficient heat transfer can be ensured. In the boundary layer region, a thin melt film 10 - 400 μm is advantageously formed. Due to the contactless and local limited energy input via the laser radiation thermal damage to the sealing element and the base body is prevented. Also, mechanical stresses are avoided because the sealing element and the body during the introduction of energy and the cooling process no relative movement to each other Experienced. The achievable cohesive connection is characterized by its impermeability, strength and freedom from pores and is in accordance with the material pairings of joining partners to be joined in the field of basic material strength.

It has been found that CO ₂ , Nd: YAG and diode lasers are particularly suitable for joining the main body and the sealing element. The wavelength of a CO ₂ laser requires very short optical penetration depths into the joining partners, which are transparent to diode lasers. It has been shown that the optical penetration depth can be adjusted by large pigmentation of the joining partner. Advantageously, the laser welding is characterized by a negligible workstation load compared to other bonding techniques, such as bonding, where vapors can escape. When using high-power diode lasers, the emission wavelengths of the laser radiation are in a range of approximately 800 to 1000 nm, which can be transported, for example, by optical glass fibers. The fiberglass insert allows easy integration of laser and processing optics z. B. in a robot system, which on the one hand can adjust the component via a suction pad and on the other hand at the same time penetrates the corresponding energy via the laser radiation in the joining partners. In addition, it has been shown that both amorphous and partially crystalline thermoplastics can be welded as joining partner material. Although glass fibers cause the laser radiation to scatter, depending on the size and concentration of the glass fibers as well as the component dimensions, glass fiber reinforced plastics can also be welded.

Advantageously, the interconnected joint partners can be made of thermoplastic materials. At room temperature, the joining partners are firm and hard. In the penetration of the energy according to the invention into the boundary region of the join partners to be joined, heat conduction occurs due to the resulting high temperatures> 100 °. The thermoplastics soften and melt. The following thermoplastics are particularly suitable as material for the joining partners to be joined: PA, PUR, POM, PC, PE-HD, PE-LD, PETP, PFEP, PTFE, PB, PPO, PVC-U, PVC-P, PS, SB , SAN, ABS, PMMA, CAB, PI. PVC, PTFE and PP are characterized by a comparably good corrosion resistance. PS, PMMA, PC are advantageously crystal clear, transparent, unbreakable and weather resistant.

It is also conceivable that the housing is made of at least two housing shells, wherein the actuating element is arranged in a recess of one of the housing shells, wherein the actuating element rests directly on the housing shell. As a rule, only one housing shell has a recess in which the actuating element is inserted. Of course, it may be provided that the identification transmitter is formed on two sides, that is, on each housing shell with at least one actuating element. The electronics must be designed accordingly, so that upon actuation of each individual actuating element, the associated electrical component can be activated. The housing shells with each other are advantageously materially connected to each other, in particular, the housing shells are glued, laser welded or friction welded.

Advantageously, the metallic coating is at least partially disposed on the inner surface of the actuating element. Here, the free surface is provided on the inner surface of the actuating element, whereby a not visible to the user attachment can be done with the sealing element. Alternatively, it is conceivable that the entire inner surface of the actuating element is metallschichtlos and thus forms a large area metallschichtlose free surface. In this embodiment, it can be provided that different attachment points are provided, on which a cohesive connection between the base body and the sealing element is achieved. The cohesive connection can also be present over the entire surface between the base body and the sealing element.

In addition, the invention may include that the metallic coating has a visible to the user design element, in particular a pictogram. The design element may include a pattern, a letter, number. It is advantageous that a pictogram is present on the metallic coating, which represents, for example, an image representing a locking process or an unlocking process or a process for opening the boot. The design element can also be designed in such a way that it can additionally be felt by the user. This means that the design element, for example, projecting, can be raised on the metallic coating. The invention also includes the following possibility that the Design element is embedded in the metallic coating, so that the contour of the design element is groove-shaped within the metallic coating.

In one possible embodiment of the invention, the metallic coating is a chromium coating. It is also conceivable that the metallic coating is an aluminum coating or ruthenium coating. These coatings may, for example, be applied by a plating or PVD (Physical Vapor Deposition) method.

In a further conceivable embodiment of the identification transmitter, the actuating element may have on the outside of the metallic coating at least one further metal-free surface, wherein in particular the base body and / or the sealing element is transparent / are. This metal-free surface on the outside metallic coating can form a design element that is visible to the user. The visibility can be further enhanced by the fact that this metal-free surface can be illuminated on the outside metallic coating. For this it is necessary that the base body and / or the sealing element are translucent. Advantageously, there is a light element below the sealing element, wherein the light element is part of the electronics. The light element may advantageously be an LED or an OLED. It can also be provided that the sealing element has an integrated light element, so that the sealing element simultaneously serves as a light source.

In a further measure improving the invention it can be provided that the metallic coating has a protective layer. The metallic coating of the actuating element may be provided with the protective layer, which is for example a protective and / or decorative lacquer. The protective layer can change or improve the corrosion resistance of the actuating element, at the same time improving the appearance of the metallic coating.

In addition, the invention includes the further possibility that the base body is a two-component injection-molded part, wherein the first component is formed of a galvanisable plastic and the second component of a non-galvanisable Plastic is formed. After the two-component injection-molded part is produced, electroplating may take place, so that the metallic coating can be reliably applied to the base body. The metallschichtlose free surface results on the second component, which is formed of a non-galvanisable plastic. In one possible embodiment of the invention, such a sequence can be adhered to in the production of the two-component injection-molded part of the main body, in which first that plastic component is sprayed whose plastic material must be processed at a higher temperature, that generally has the higher melting point, and in one subsequent process step, which is molded at a lower temperature to be processed second plastic component to the preferably already completely solidified first plastic component. For example, polycarbonate has proved to be a particularly suitable plastic A for the formation of the non-galvanisable body part of the body. In addition to the fact that it practically does not participate in the subsequent process steps, this material has the advantage that it is particularly suitable as a light guide. In addition, PC can be well doped with light-scattering particles, which can be achieved in the actuator particularly homogeneous light distribution. The materials polyamide, ABS or an ABS / polycarbonate blend have z. B. proved to be particularly suitable plastics B to form the electroplated layer. A highly resilient mechanical connection of the part body with the electroplatable layer results when the electroplatable layer consists of an ABS / polycarbonate blend and the partial body made of polycarbonate.

In order to improve the "cool touch effect" known to the user, the metallic coating may be formed from a plurality of metal layers. In addition, it is conceivable that the scratch tendency on the metallic coating can be reduced or the abrasion on the metallic coating can be reduced.

• Einem Gehäuse, in dem eine Elektronik angeordnet ist, die mit dem kraftfahrzeugseitigen Sicherheitssystem in Kommunikation bringbar ist,
• mindestens einem für den Benutzer zugänglichem Betätigungselement, das zur Aktivierung eines elektrischen Bauelementes der Elektronik geeignet ist,
• dem Betätigungselement, das aus einem Grundkörper aus Kunststoff ausgebildet ist und außenseitig eine metallische Beschichtung aufweist,
• wobei das Betätigungselement eine Innenfläche aufweist, die der Elektronik zugewandt ist und mit zumindest einer metallschichtlosen Freifläche ausgeführt ist,
• einem aus einem flexiblen Kunststoff ausgeführten Dichtelement, das zwischen der Elektronik und dem Betätigungselement angeordnet ist.

In addition, the above-mentioned invention is achieved by a method for producing a mobile identification transmitter, which serves to activate a safety system of a motor vehicle. Here, the identification transmitter is designed with the following features:

• A housing, in which an electronic unit is arranged, which can be brought into communication with the motor vehicle-side safety system,
• at least one user-accessible actuator that is suitable for activating an electrical component of the electronics,
• the actuating element, which is formed from a plastic base body and has a metallic coating on the outside,
• wherein the actuating element has an inner surface, which faces the electronics and is designed with at least one metal-free surface,
• a sealing element made of a flexible plastic, which is arranged between the electronics and the actuating element.

1. a) Erzeugung des Grundkörpers aus Kunststoff
2. b) Metallisierung des Grundkörpers
3. c) Einlegen des Grundkörpers in eine Ausnehmung des Gehäuses
4. d) Laserverschweißen des Betätigungselementes an seiner Innenfläche, die mit zumindest einer metallschichtlosen Freifläche ausgeführt ist, mit dem Dichtelement, so dass die Freifläche und das Dichtelement stoffschlüssig verbunden werden.

The method according to the invention comprises the following steps:

1. a) Production of the main body made of plastic
2. b) metallization of the body
3. c) inserting the base body in a recess of the housing
4. d) laser welding of the actuating element on its inner surface, which is designed with at least one metal-free surface, with the sealing element, so that the free surface and the sealing element are materially connected.

• Einem Gehäuse, in dem eine Elektronik angeordnet ist, die mit dem kraftfahrzeugseitigen Sicherheitssystem in Kommunikation bringbar ist,
• mindestens einem für den Benutzer zugänglichem Betätigungselement, das zur Aktivierung eines elektrischen Bauelementes der Elektronik geeignet ist,
• dem Betätigungselement, das aus einem Grundkörper aus Kunststoff ausgebildet ist und außenseitig eine metallische Beschichtung aufweist,
• wobei das Betätigungselement eine Innenfläche aufweist, die der Elektronik zugewandt ist und mit zumindest einer metallschichtlosen Freifläche ausgeführt ist,
• einem aus einem flexiblen Kunststoff ausgeführten Dichtelement, das zwischen der Elektronik und dem Betätigungselement angeordnet ist.

In addition, the above-mentioned invention is achieved by a method for producing a mobile identification transmitter, which serves to activate a safety system of a motor vehicle. Here, the identification transmitter is designed with the following features:

• A housing, in which an electronic unit is arranged, which can be brought into communication with the motor vehicle-side safety system,
• at least one user-accessible actuator that is suitable for activating an electrical component of the electronics,
• the actuating element, which is formed from a plastic base body and has a metallic coating on the outside,
• wherein the actuating element has an inner surface, which faces the electronics and is designed with at least one metal-free surface,
• a sealing element made of a flexible plastic, which is arranged between the electronics and the actuating element.

1. a) Erzeugung des Grundkörpers (21) aus Kunststoff
2. b) Metallisierung des Grundkörpers (21)
3. c) Plastifizieren der Freifläche (23) des Betätigungselementes (20) und zumindest eines Teilbereiches des Dichtelementes (13) durch Heißgas
4. d) Zusammenfügen des Betätigungselementes (20) und des Dichtelementes (13)

The method according to the invention comprises the following steps:

1. a) Production of the main body (21) made of plastic
2. b) metallization of the main body (21)
3. c) plasticizing the free surface (23) of the actuating element (20) and at least a portion of the sealing element (13) by hot gas
4. d) joining the actuating element (20) and the sealing element (13)

Advantageously, the connection of the actuating element with the sealing element via a hot gas welding, which behaves, for example, insensitive with respect to manufacturing tolerances, since slight deviations of the components to be connected from the given shape are unproblematic.

For example, it is conceivable that the actuating element and the sealing element are held via a corresponding receptacle and spaced from each other. In the intermediate space between the two components to be joined, a heating element is introduced, which heats the mutually facing surfaces which are to be joined together. This is advantageously effected by hot gas, which is directed to the surfaces to be joined, preferably with corresponding nozzles.

For example, it can be provided that nitrogen gas or another inert gas is used as the working gas in order to heat-soften or plasticize and / or melt the regions of the actuating element, in particular the Open space and the sealing element to protect against oxidation or reaction with other elements. This is a further advantage of the connection technique according to method steps c) and d). Here it is avoided that a corresponding oxygen absorption takes place in the weld seam area.

Furthermore, it can be provided according to the invention that after softening or plasticizing or melting the abovementioned areas of the actuating element and the sealing element, the heating element is moved out of the intermediate space between the components to be joined and the receptacles are moved towards one another with the actuating element and the sealing element, so that the surfaces to be connected come into contact with each other. To produce a solid cohesive connection by welding the recordings are held against each other with a predetermined pressure, so that the components to be joined are pressed against each other with the appropriate pressure.

In addition, it may be provided that after a defined holding time, in which there is already a cooling of the softened or molten material areas and thus a solidification is accompanied by the actuating element and sealing element resulting welded unit is removed from the recordings to be subsequently completely cooled.

The method according to the invention also includes that the actuating element and the sealing element can already be preheated in order to shorten the heating of the regions to be welded by the hot gas. For example, it is conceivable that one or both components to be joined are introduced in a preheating furnace or the surfaces of the areas to be welded are heated by infrared radiation.

Advantageously, the metallization of the base body according to step b) can be carried out in a galvanization process or in a physical and / or chemical vapor deposition process, wherein in particular the complete outer surface of the base body is metallized. During plating, metallization can take place according to the following process steps: palladium nucleation, reduction, chemical metallization, eg. B. by means of nickel or copper, and galvanic reinforcement, eg with chrome. In the vapor deposition method, in particular in the PVD method, the metallization is advantageously carried out by means of a physical deposition from the gas phase, for. B. by vapor deposition. The PVD method offers the possibility of direct metallization of the surface of the base body, wherein the metallic coating may consist of one or more superimposed identical or different metal layers. About the just-mentioned methods for metallization, it is possible to selectively create metal-free open spaces on the body. By means of the technique described in the PVD method, also materials or materials with lower surface energies can be coated. Here, the surface energies of the materials are activated by means of a plasma, whereby a very good adhesion to polymers is produced. In plasma activation, a gas or gas mixture may be subjected to an electrical gas discharge in a vacuum. In this case, electrodes, ions, radicals, etc. can be generated, which impinge on the surface of the base body to be coated, thereby contaminants can be removed and the surface roughened and chemically modified. Thereafter, a direct metallization can take place, in which a chromium and / or aluminum layer can be produced in a described embodiment.

The invention also includes the idea of the invention that after the metallization according to step b), a partial area of the metallic coating on the inner surface of the actuating element is removed. This means that in the metallization step, the complete base body is coated metallically. The necessary metal-free spaces are then produced by means of a metallic ablation. It is conceivable that a laser carries out the removal of the metallic coating, wherein in particular the same laser is subsequently used in step d).

It is also possible that after step b) on the outside surface of the metallic coating, a design element is applied, in particular by means of a laser ablation. Alternatively, it is included in the invention that the main body is provided on its surface with a design element. This design element protrudes protruding out of the surface of the body. Advantageously, the base body is formed of the same material with the design element. After the metallization is the metallic coating on the outside of the actuating element, at the same time the metallic coating carries the design element, which is clearly visible to the user on the surface of the actuating element.

According to the invention it may be advantageous that the free surface is heated with a higher hot gas temperature than the sealing element. In particular, different hot gas temperatures make sense if the actuating element, in particular the base body and the sealing element are formed of different plastic materials. Advantageously, the sealing element is formed with a corresponding soft component, so that the material of the main body of the actuating element has a higher hardness than the sealing element.

Figur 1

eine schematische Schnittansicht auf einen mobilen Identifikationsgeber mit zwei Betätigungselementen, die mit einer metallischen Beschichtung versehen sind,

Figur 2

ein mögliches Ausführungsbeispiel eines Betätigungselementes gemäß Figur 1,

Figur 3

eine schematische Draufsicht auf einen mobilen Identifikationsgeber mit zwei Betätigungselementen,

Figur 4

ein weiteres Ausführungsbeispiel eines Betätigungselementes gemäß Figur 1,

Figur 5

ein weiteres Ausführungsbeispiel eines Betätigungselementes gemäß Figur 1,

Figur 6

eine weitere Ausführungsalternative eines Betätigungselementes gemäß Figur 1,

Figur 7

ein noch weiteres Ausführungsbeispiel eines Betätigungselementes gemäß Figur 1,

Figur 8

ein weiteres Ausführungsbeispiel eines Betätigungselementes gemäß Figur 1,

Figur 9

eine rein schematische Ansicht der Verfahrensschritte zur Herstellung eines mobilen Identifikationsgebers und

Figur 10

eine schematische Ansicht auf ein Kraftfahrzeug, welches in Kommunikation mit einem mobilen Identifikationsgeber bringbar ist.

Further advantages, features and details of the invention will become apparent from the following description in which several embodiments of the invention are described in detail with reference to the drawings. The features mentioned in the claims and in the description may each be essential to the invention individually or in any desired combination. Show it:

FIG. 1

a schematic sectional view of a mobile identification transmitter with two actuators, which are provided with a metallic coating,

FIG. 2

a possible embodiment of an actuating element according to FIG. 1 .

FIG. 3

a schematic plan view of a mobile identification transmitter with two actuators,

FIG. 4

a further embodiment of an actuating element according to FIG. 1 .

FIG. 5

a further embodiment of an actuating element according to FIG. 1 .

FIG. 6

a further alternative embodiment of an actuating element according to FIG. 1 .

FIG. 7

a still further embodiment of an actuating element according to FIG. 1 .

FIG. 8

a further embodiment of an actuating element according to FIG. 1 .

FIG. 9

a purely schematic view of the process steps for producing a mobile identification transmitter and

FIG. 10

a schematic view of a motor vehicle, which can be brought in communication with a mobile identification transmitter.

In FIG. 10 schematically a motor vehicle 2 is shown, which is equipped with a security system 3, which may include an access and / or driving authorization system. By way of a corresponding actuation of an actuating element (= actuating button) on the identification transmitter 1, the safety system 3 can be activated, for example, which means that, for example, the motor vehicle 2 can be locked and / or unlocked. It is also conceivable that via a corresponding actuating element on the identification transmitter 1 of the boot lid can be opened.

The identification transmitter 1 can according to FIG. 1 be formed of a housing 10, which is composed of a first housing shell 11 and a second housing shell 12. Within the housing 10 is an electronics 40, which can be addressed via two actuators 20. It is also conceivable that the identification transmitter 1 has only one actuating element 20 or a large number of actuating elements 20, that is, three or more actuating elements 20. In order for the electronics 40 to be reliably sealed, a sealing element 13 is arranged between the actuating elements 20 and the electronics 40. The sealing element 13 consists of a soft component made of plastic. Through a corresponding actuation of the respective actuating element 20, the sealing element 13 is simultaneously in the direction Electronics 40 deformed, wherein the electronics 40 comprises electrical components 41, which can be addressed via an actuation of the actuating element 20, switched. The electrical component 41 may, for. As a button, switch, microswitch. The electrical component 41 is located on a circuit board 42 of the electronics 40.

By means of a corresponding actuation of the actuating element 20, the electrical component 41 can be activated, whereupon different actions with respect to the communication between the identification transmitter 1 and the motor vehicle 2 can be started. As a rule, the mobile identification transmitter 1 can be equipped with a transmitting and / or receiving unit in order to reliably communicate with the motor vehicle 2, in particular with a transmitting and / or receiving unit on the motor vehicle side.

The actuator 20 is formed according to all other embodiments of the invention from a base body 21 made of plastic, which, for example, in FIG. 2 is clarified. The outside of the main body 21 has a metallic coating 30. The attachment of the actuating element 20 is located on the inner surface 22 of the base body 21 and that on the inner surface 22 open spaces 23 are provided, which are metallschichtlos. At the free surfaces 23, the base body 21 is integrally connected to the sealing element 13. In the illustrated embodiments, the base body 21 is laser-welded to the sealing element 13 on the three surfaces 23.

In FIG. 3 is exemplified that the outside of the actuating element 20 may have on its metallic coating 30, a design element 24 in the form of a pictogram. The upper actuator 20 is used to lock the motor vehicle side safety system 3. The lower actuator 20, however, is used to unlock the motor vehicle side safety system 3. Like FIG. 1 and FIG. 3 show the actuators 20 in a recess 14 of the housing 10. In addition, the actuators 20 are directly on the upper housing shell 11, wherein the actual attachment is present on the inside of the open spaces 23.

According to the Figures 2 . 4 to 6 it is conceivable that the metallic coating 30 is not only arranged on the visible outer surface of the actuating element 20, but at least partially present on the inner surface 22. Only at the attachment points, which are defined by the free surfaces 23, there is no metallic coating. Alternatively, it is conceivable that the inner surface 22 is completely formed without metal layers as an open space 23, which, for example, in FIG. 7 and in FIG. 8 is shown. Also, the actuator 20 according to FIG. 2 . FIGS. 4 to 6 be formed completely metallschichtlos on the inner surface 22.

In the FIGS. 4 to 6 possible alternative embodiments of a design element 24 are shown, which may be present on the outside of the actuating element 20. According to FIG. 4 For example, the base body 21 has the respective design element 24 on its surface. The metallic coating 30 is located above the surface of the main body 21, wherein on the surface of the metallic coating 30 also the design element 24 is formed, which is visible to the user.

According to FIG. 5 is the design element 24 - as well as in FIG. 4 - Projecting formed on the metallic coating 30, so that the user can not only see the design element 24 but also feel. In contrast to FIG. 4 is the surface of the body 21 made plan.

In a further alternative embodiment according to FIG. 6 For example, the metallic coating 30 on the outside of the actuating element 20 has metal-free open areas 33, which create a design element 24 for the user. Additionally, in FIG. 6 be provided that the electronics has 40 light elements 43 in the form of LEDs, which provide the illumination of the metal-layer-free open spaces 33.

In FIG. 7 It is shown schematically that the metal layer 30 may be formed from a plurality of metal layers 32. In addition, it is conceivable that a protective layer 31 covers the metallic coating 30. Of course, the protective layer 31 also according to Figure 1 to Figure 6 respectively. FIG. 8 available.

In FIG. 8 a further embodiment of an actuating element 20 is shown, in which the base body 21 is a two-component injection molded part, wherein the first component 21 a is formed of a galvanisable plastic and the second Component 21 b is formed from a non-galvanisable plastic. The metallization of the main body 21 can take place via a galvanization process or a physical and / or chemical vapor deposition process, in particular PVD processes. Here, in a first step, a metallization of the base body 21. In this case, it is conceivable that the complete base body 21 is coated with a metallic coating 30. Subsequently, at defined locations on the inside of the main body 21, a defined area of the metallic coating 30 can be removed, for example via a laser, so that open spaces 23 are formed. According to FIG. 8 For example, the metallization of the main body 21 may be such that only the first component 21a is provided with the metallic coating 30 during the galvanization. Since the second component 21 b of the main body 21 is not galvanisable, the entire surface of the second component 21 b of the main body 21 remains free of metal film. Thus, according to FIG. 8 no further step for removing a partial area of the metallic coating 30 on the inner surface 22 of the actuating element 20 is necessary.

After the main body 21 has been metallized accordingly, see step 2 of FIG. 9 , the main body 21 including its metallic coating 30 is placed in the recess 14 of the housing 10 (step 3). Subsequently, a laser welding of the actuating element 20 takes place on its inner surface 22, namely on the metal-free surface 23, so that a material-locking connection between the light element 13 and the base body 21 is formed (see step 4). Before the metallization of the main body 21 takes place according to step 2, the production of the main body 21 follows in an injection molding process (step 1). In all figures, the areas A are shown, which simplify the cohesive connection between the base body 21 and the sealing element 13 represent.

According to FIG. 9 it is also conceivable in step 3 that a plasticization of an open space 23 of the actuating element 20 and / or a portion of the sealing element 13 is carried out by hot gas, and then in step 4, the actuating element 20 and the sealing element 13 are joined, in particular with a defined force. Steps 1 and 2 have already been described above, so that at this point only reference is made.

LIST OF REFERENCE NUMBERS

1

mobile identification transmitter

2

motor vehicle

3

security system

10

casing

11

first housing shell

12

second housing shell

13

sealing element

14

recess

20

actuator

21

body

21a

first component

21b

second component

22

palm

23

open space

24

design element

30

metallic coating

31

protective layer

32

metal layer

33

open space

40

electronics

41

electrical component, microswitch, switch

42

circuit board

43

light element

Claims (16)

1. Mobile identification device (1) for activation of a security system (3) of a motor vehicle (2), particularly of an entry and/or driver permission system, with a housing (10), in which an electronic (40) is arranged, which can be put in communication with the vehicle related to a security system (3),
   at least one actuation element (20) accessible for a user, which is usable for an activation of the electric component (41) of the electronic (40),
   wherein the actuation element (20) is configured from a base body (21) made of plastic, wherein the actuation element (20) comprises a metallic coating (30) on the outer side and an inner surface (22) which is facing the electronic (40)
   characterized in that
   the inner surface (22) is configured with at least one open space (23) free from metallic surface and that a sealing element (13) configured from flexible plastic is arranged between the electronic (40) and the actuation element (20),
   wherein the open space (23) of the actuation element (20) is arranged materially with the sealing element (13).
2. Mobile identification device (1) according to claim 1,
   characterized in that
   the open space (23) is welded by laser or welded by ultra-sonic or friction-welded or welded by hot gas with the sealing element (13).
3. Mobile identification device (1) according to claim 1 or 2,
   characterized in that
   the actuation element (20) comprises a plurality of open spaces (23).
4. Mobile identification device (1) according to one of the proceeding claims, characterized in that
   the housing (10) is configured from at least two housing shells (11, 12),
   wherein the actuation element (20) is assembled in a recess (14) of one of the housing shells (11, 12),
   wherein the actuation element (20) is directly adjacent to the housing shell (11, 12).
5. Mobile identification device (1) according to one of the proceeding claims
   characterized in that
   the metallic coating (30) is at least partially arranged at the inner surface (22) of the actuation element (22) and/or that the metallic coating (30) comprises a design element (24) visible for the user, particularly a pictogram and/or that the metallic coating (30) is a chromium coating.
6. Mobile identification device (1) according to one of the proceeding claims
   characterized in that
   the actuation element (20) comprises at least one further open space (33) without metallic coating (30) on the outer side of the metallic coating (30), wherein particularly the base body (21) and/or the sealing element (13) is/are permeable to light.
7. Mobile identification device (1) according to one of the proceeding claims
   characterized in that
   the metallic coating (30) comprises a protective layer (31) and/or the metallic coating (30) is configured from multiple metallic layers (32).
8. Mobile identification device (1) according to one of the proceeding claims
   characterized in that
   the base body (21) is a two component injection molding part,
   wherein the first component (21 a) is configured from galvanisable plastic and the second component (21 b) is configured from a non-galvanisable plastic.
9. Method for producing a mobile identification device (1) which serves for activation of a security system (3) of a motor vehicle (2), particularly an access and/or driver permission system with a housing (10) in which an electronic (40) is arranged,
   which can be brought into communication with the vehicle related security system (3), at least one actuation element (40) accessible for the user which is suitable for an activation of an electric component (41) of the electronic (40),
   the actuation element (20) which is configured as a base body (21) made from plastic and which comprises a metallic coating (30) on the outer side,
   wherein the actuation element (20) comprises an inner surface (22) which is facing the electronic (40) and is configured with at least one open space (23) free from metallic coating,
   a sealing element (13) configured from a flexible plastic which is arranged between the electronic (40) and the actuation element (20) with the following steps:

   a) Actuation of the base body (21) made from plastic,

   b) Metallization of the base body (21),

   c) Insertion of the base body (21) in a recess (14) of the housing (10),

   d) welding by laser of the actuation element (20) and its inner surface (22) which is configured with at least one open space (23) free from metal coating with the sealing element (13) such that the open space (23) of the sealing element (13) are materially connected.
10. Method for producing a mobile identification device (1) which serves for activation of the security system (3) of a motor vehicle (2), particularly an access and/or driver permission system with a housing (10) in which an electronic (40) is arranged which can be brought in communication with the vehicle related security system (3), at least an actuation element (20) accessible for the user which is usable for an activation of an electric component (41) of the electronic (40), the actuation element (20) which is configured from a base body (21) made from plastic and comprises a metallic coating (30) on the outer side, wherein the actuation element (20) comprises an inner surface (22) which is facing the electronic (40) and which is configured with at least one open space free from metallic coating, a sealing element (13) configured from flexible plastic which is arranged between the electronic (40) and the actuation element (20) with the following steps:

    a) Generation of the base body (21) made from plastic,

    b) Metalizing of the base body (21)

    c) Plasticizing of the open space of the actuation element (20) and at least a section of the sealing element (30) by hot gases

    d) Assembly of the actuation element (20) and the sealing element (13).
11. Method according to claim 9 or 10,
    characterized in that
    the metallization of the base body (21) according to step b) is performed in an galvanizing method or a physical and/or chemical vapour deposition method, wherein particularly the complete outer surface of the base body (21) is metallized.
12. Method according to one of the proceeding claims,
    characterized in that
    after the metallization according to step (b) a partial section of the metallic coating (30) at the inner surface (22) of the actuation element (20) is removed.
13. Method according to claim 12
    characterized in that
    the laser performs the removal of the metallic coating (30), wherein particularly the same laser is subsequently used in step d).
14. Method according to one of the proceeding claims
    characterized in that
    subsequent-to step (b) a design element (24) is applied to the outer surface of the metallic coating (30) particularly by laser removal.
15. Method to one of the proceeding claims
    characterized in that
    the open space (20) is heated with a higher hot gas temperature than the sealing element (13).
16. Method according to one of the claims 9 to 15 for producing a mobile identification device (1) according to one of claims 1 to 8.

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