DE19964314C2 - Keys, especially for motor vehicles - Google Patents

Description

The invention relates to a key of the type mentioned in claim 1. Such keys are used in particular in motor vehicles.

From US 2,690,666, as the closest prior art, is a Key holder known, with the key in a housing above them assigned compression springs can be moved out of the housing. at This key holder can hold a key using a selector switch be selected, and then the key by actuation of a trigger be released. The selected key is then based on the power of the Compression spring moved out of the housing into its working position. The feathers grab the key at the subject of the US script right at the back end so that they are in the rest position of the key in the interior of the housing occupy a significant part of the overall length of the key housing. An increased Overall length, however, is not desirable, in particular in the case of vehicle keys remain in the ignition lock during the operation of a motor vehicle because of the in  key protruding into the movement space of a knee the risk of injury in the Area of the right knee of a driver is increased.

From US 2,550,375 is also laterally displaceable in a housing arranged key known. This key is also in the back Installation space of the key arranged a spring member, which is directly on the key acts. However, the spring member is designed as a tension spring, which the Key from its extended position to its retracted position automatically returns when a trigger button is pressed that holds the key releases.

From DE-GM 17 13 197 a key housing is known, in which one lying key out of the housing via a manual actuation or in the housing can be pushed in. Actuation of the key via a this writing does not show any facial expressions that act on it. The one in the The housing key can only be connected to one or more spring elements in its retracted in or pushed out of the housing Position to be fixed.

With an electronic mechanical key manufactured by Huf it is known to expand and retract a mechanical key part on a Arrange key housing. With this key, the key electronics are in a first housing part and the mechanical key part in and on a second Housing part arranged. The interfaces between the first and the second Housing parts are very angled and dimensionally complicated with this key.

When folded, the mechanical key part lies on one long side of the key housing, within a recess that serves as a key holder. The key is in the receptacle of the housing in its opening direction lying side openly accessible.  

On the outside of the key there is a release button, the actuation of which Key unfolded from its rest position on the housing into a working position can be in which the mechanical key part z. B. to operate a Lock cylinder or an ignition lock can be used. The Folding out occurs automatically after pressing the release button in the key housing arranged spring drive on the mechanical Key part works.

The trigger button must be pressed again to fold in the mechanical key part are pressed and the key is then manually returned to its rest position in the can be folded in on the side of the housing.

The disadvantage of such a key is that it is in the Recording openly accessible keys Collect dirt particles that pass over the mechanical key part in the lock cylinder to be operated and / or Ignition switch, etc. get dirty and permanently may become inoperable. The opening is also in the Folding in the key can be visually unattractive.

From DE 296 18 616 U1 a motor vehicle key is known, which also with facial expressions from a position folded on one side of the housing to one from the Housing protruding, unfolded working position is transferable.

The object of the present invention is to provide a key that has a has relatively short space and which has a good optical Appearance.

According to the invention, this is achieved by the measures mentioned in claim 1 reached. Two self-contained housing parts are along one in  essential planar plane reversibly arranged together. The first Housing part contains key electronics. The second housing part takes one mechanical key part and facial expressions. The key part is in his Rest position arranged inside the housing, the key part after actuation the release button on the facial expressions arranged in the housing Rest position inside the housing by a longitudinal displacement in its Working position is transferred, in which at least the closing part of the mechanical key part is outside the housing. The facial expressions indicate this a pressure accumulator, which is indirectly via a thrust on the actuator of the key part attacks. Furthermore, locking means are provided which mechanical key part in its rest and in its working position in keep essentially motionless. After pressing the release button or one other release means, the locking means release the mechanical closing part, so that it can be moved from one position to the other. The Locking means can e.g. B. arranged on one or more levers hooks include, which is in the locking position in a located on the circumference of the closing part Engage recess, or that in a projection, a nose, a Attack counter detent member etc. of an actuator belonging to the facial expressions and such indirectly hold the mechanical striker in its working or rest position. Through these measures, it is no longer necessary to put the pressure energy storage in to be located in the immediate vicinity of the mechanical key part in order to Moment of motion from the pressure accumulator to the mechanical key part transfer. Rather, it becomes possible to attach the pressure accumulator to any one Position in the key housing. So the pressure energy storage especially on the side, next to the key drawn into the housing to be ordered. The installation space, in particular the installation space length of the This can reduce the key housing. Also a bigger one Variation in the shape of the key housing allows. As Pressure accumulator can e.g. B. linear pressure springs are provided, Coil springs, elastic elements (e.g. made of plastic), pressure bodies, solenoids etc.  

In the indirect transmission of the adjustment movement from the pressure force accumulator the mechanical key part can the pushing agent z. B. a drive belt, a Setting chain, an adjusting band, a toothed belt, a gear, etc.

To ensure that the mechanical key part moves out smoothly ensure, means are arranged in the interior of the housing through which Key part in the longitudinal movement from its rest position to his Working position is performed.

Another advantage resulting from the solution according to the invention according to claim 1 the result is that smooth surfaces now predominate on the key housing and there are no protruding edges and unsightly depressions, so that the key has a very attractive appearance.

In addition, the ease of use is due to the automatic extension of the mechanical key part and easy to reinsert the same has been improved.

It can also be advantageous if the key opening in the Housing part essentially form-fitting to the outer contour of the mechanical Key part is designed so that as little opening space as possible between Housing wall and key part is present on the dirt particles in the Can penetrate the interior of the housing. Furthermore, the form-fitting design stripping of the opening, possibly during or after actuation trapped dirt particles.

In a further advantageous embodiment of the invention, according to claim 3 also a means for closing the key opening, such as a flap or a slide, which is operated manually or automatically, can be provided, the  Housing part in the rest position of the mechanical key part arranged therein completely seals off the ingress of dirt.

It can be advantageous according to claim 4 if the key part within the Housing part is in a guide channel, within which the key part its longitudinal displacement is performed. Conveniently, to generate the Guide channel also surrounding housing walls such. B. those on the flat sides walls of the surrounding housing part to form the guide channel be used.

The guide channel can have a lateral opening through which an actuator, such as a gear or a driver pin, on the mechanical key part can act and such an adjustment movement exercised by the facial expressions on the mechanical key part transmits.

It is advantageous to combine the key electronics and the key mechanics in two to arrange sealed housing parts, both along flat Connection surfaces are releasably attached to each other. Conveniently that is Battery cover arranged on the housing part in such a way that the key electronics has that it through the opposite housing part with the mechanics in it is covered. To change the battery you only have to separate the two housing parts are made from each other to then the To be able to open the battery cover. To connect the two housing parts are the various connection means conceivable. So z. B. Dovetail grooves or recesses and dovetail protrusions or increases can be arranged on the housing parts, which are pushed into one another ensure the connection of the two housing parts.

Further advantages and measures of the invention result from the Subclaims, the following description and the drawings. In the Drawings, the invention is shown in three embodiments. Show it:

Fig. 1 shows schematically, in side view of the key, wherein both housing parts are fixed to one another,

Fig. 2 schematically shows the key in which the connecting means of the two housing parts are released,

Fig. 3 schematically the key 1 in a section along III-III of FIG.

Fig. 4 schematically shows an embodiment of a key according to the invention, in a section through the second housing part with the key mechanism,

Fig. 5 shows schematically the embodiment of the key according to the invention in a section VV of Fig. 4,

Fig. 6 schematically shows a further embodiment of the key according to the invention in section through the mechanism comprising the second housing part, in the rest position of the mechanical key member,

Fig. 7 schematically, the embodiment of the key according to the invention according to Fig. 6 in the working position of the mechanical key part.

In the embodiment according to FIGS. 1 to 3, the key is composed of a first housing part 20 and a second housing part 30 . The first housing part comprises a housing base plate 22 and a housing cover 21 . In the housing cover 21 , touch fields are arranged, by means of which electronics 25 located inside the first housing part 20 can be actuated. A battery compartment cover is arranged in the housing base plate 22 , via which a battery, which serves to supply power to the electronics 25 , can be inserted into and executed in the housing part 20 . The first housing part 20 is closed in a watertight manner, the housing cover 21 being fixed on the housing base plate 22 by screwing means. On the key 10 , an eyelet 19 is provided in this embodiment, to which, for. B. a keychain can be attached.

A second housing part 30 is arranged on the first housing part 20 along a planar plane. In this exemplary embodiment, the second housing part 30 likewise consists of a housing base plate 32 and a housing cover covering this. Both housing parts 20 and 30 are releasably connected to one another via connecting means 28 , 33 . In this exemplary embodiment, these connecting means are locking means projections 28 which are arranged in grooves in the housing base plate 32 of the first housing part 20 and on the side of the second housing part 30 are dovetail pins 33 which are integrally formed on the housing base plate 32 . In order to separate both housing parts 20 , 30 from each other, e.g. B. for the purpose of replacing the battery, both housing parts in the disassembly direction 17 ( Fig. 2) are moved against each other, an initial resistance may have to be overcome. After this displacement according to arrow 17 , the dovetail pins 33 are located in the open part of a groove, so that both housing parts 20 , 30 can now be separated from one another. For assembly, the two housing parts 20 and 30 must be placed in a corresponding manner, the dovetail pins 33 having to be inserted into the groove on the opposite housing part, and the housing part 20 then being displaced in the mounting direction 18 ( FIG. 2) relative to the housing part 30 . The dovetail pins 33 hook behind the locking means projection 28 in the housing base plate 22 of the first housing part, as a result of which both housing parts 20 , 30 are fixed to one another. By fixing the two housing parts along one level, the assembly / disassembly described above is simplified.

A key mechanism is arranged in the second housing part 30 , by means of which a mechanical key part 35 , which is in a rest position 11 in the housing interior of the second housing part 30 , can be automatically moved into a working position 15 by actuating a triggering means, such as a triggering key 70 , in which the mechanical key part 35 can be used to actuate a lock cylinder or an ignition lock etc. For this purpose, the mechanical key part 35 in the present exemplary embodiment according to FIGS. 4 and 5 is arranged in the second housing part 30 as follows.

In Figs. 4 and 5, an embodiment of the key according to the invention is now shown. In a housing part 30 ', a mechanical key part is, in turn, 35' arranged in a housing in the part 30 'lying guide channel 37' slidably. The guide channel 37 'is formed from the two flat walls 40 ' and 41 ', which correspond to sections of the flat sides 38 ' and 39 'of the housing base plate 32 ' and the housing cover 31 '. The sides of the guide channel 37 'are formed by walls 42 ' and 43 '. An opening 44 'is provided in the wall 43 ', through which an actuator 47 'formed as a gearwheel extends and the teeth 62 of the gearwheel 47 ' engage in a toothing 64 on the mechanical key part 35 '. The gear 47 'is seated on an axis 63 , which in this exemplary embodiment is formed on the housing base plate 32 '. The gear 47 'has a cavity in its upper region, in which a pressure force accumulator 60 , such as a spiral spring, is arranged. In the lower circumferential area of the gearwheel below the toothing 62 , a recess 76 is provided, into which the latching hook 72 'of a lever 71 ' protrudes when the mechanical key part 35 'is in its rest position or its working position. As in the previous exemplary embodiment, the lever 71 'can be actuated via a release button 70 '. The latching hook is in turn under the force of the spring 77 ', which is arranged between the frame-side spring seat 78 ' and the attachment point 79 'on the lever 70 '. In Fig. 4 the mechanical key part 35 'is shown in its working position 15 . The rest position of the mechanical key part 35 'is also shown in broken lines.

At the housing part end of the mechanical key part 35 ', a nose 48 ' is formed in the direction of the wall 42 'on the mechanical key part 35 '. This nose 48 'is arranged in an opening 46 ' which runs in the wall 42 'parallel to the guide channel 37 ' and the extension direction 16 of the mechanical key part 35 '. Through the nose 48 ', the push-out of the mechanical key portion 35' which is transmitted by the pressure accumulator 60 by means of the gear wheel 47 'on the mechanical key part 35', when the shutter button 'is pressed, limited since the tab 48' 70 at the Reaches the working position 15 against the stop 49 '.

In order to retract the mechanical key part 35 ', the trigger button 70 ' must be actuated again, so that the latching hook 72 'moves out of the recess 76 and thus enables the gearwheel 47 ' to rotate. The mechanical key part 35 'can now be pushed back into the guide channel 37 ' of the housing part 30 ', the gear 47 ' being rotated and the pressure force accumulator 60 or the spiral spring being pulled up again in order to permit renewed extension. The insertion process is terminated when the nose 48 'runs in front of the stop 54 ' which delimits the opening 46 'at its rear end. In the rest position 11 now reached, the latching hook 72 'snaps back into the recess 76 at the lower edge of the gear 47 '. The mechanical key part 35 'is now locked in the rest position 11 . The latching hook 72 'is latched into the recess 76 at the lower edge of the gear 47 ' when the mechanical key part is pushed in and out. This means that one revolution of the gear 47 'must be equal to the stroke of the mechanical key part.

A renewed extension into the working position 15 can in turn be carried out by actuating the release button 70 ', whereby the latching hook 72 ' extends again from the recess 76 and the gear 47 ', which is now released with the force of the spiral spring 60, the mechanical key part 35 ' the guide channel 37 'moves out and transferred to the working position 15 .

In Figs. 6 and 7, another embodiment of the key according to the invention is now reproduced. The mechanical key part 35 ″ is arranged in a housing part 30 ″ in a guide channel 37 ″. The surface walls 40 ″ of the guide channel 37 ″ are in turn formed from the surface sides 38 ″ of the housing base plate 32 ″ and the surface side, not shown, of the housing cover, also not shown. Walls 42 ″ and 43 ″ are arranged on the narrow sides of the guide channel and each have a channel 67 and a channel 68 in this exemplary embodiment. The wall 43 ″ has an elongated opening 44 ″ which runs parallel to the extension direction 16 of the mechanical key part 35 ″. In the rear area of the housing part 30 ″, a pressure force accumulator 60 ″ is arranged like a spiral spring, which acts on a gear wheel 65 , which is rotatably mounted on an axis 63 ″. The toothing 62 ″ on the gearwheel 65 engages in tooth openings 66 of a pushing means 61 , such as a toothed belt, which is guided in the channels 67 and 68 , as well as around the gearwheel 65 and on the wall section 53 ″ opposite there. At the front end of this pushing means / toothed belt 61 there is an actuator 47 ″, by means of which an adjusting movement exerted by the toothed belt 61 can be transmitted to the mechanical key part 35 ″. At the front end of the toothed belt 61 there is also a locking means 76 'which, in the rest position 11 of the mechanical key part 35 '', bears against the latching hook 72 ''of a lever 71 ''under the actuating force of the pressure force accumulator 60 ''. The locking means 76 'lies above the wall section 53 ''of the wall 47 ''.

The lever 71 ″ is pivotably mounted on an axis 81 ″. It has at its second end a release button 70 '', by means of which the latching hook 72 '' against the spring force of a spring 77 '', which is located at the attachment points 79 '' and 78 '' between the front arm of the lever 71 '' and the housing-side wall 43 '' is arranged.

In Fig. 6 the key according to the invention is shown in the rest position 11 of the mechanical key portion 35 ''. The mechanical key part 35 ″ lies entirely in the guide channel 37 ″ on the housing side behind the key position 12 .

If the trigger button 70 ″ is actuated and the lever 71 ″ is pivoted against the force of the spring 77 ″, the latching hook 72 ″ releases the locking means / locking member 76 ′. As a result, the thrust means 61 with the actuator 47 ″ arranged thereon, due to the moment of motion exerted by the pressure force accumulator 60 ″, can move the pressure force accumulator 60 ″ onto the gear 65 and from there via the teeth 62 ″ and the tooth opening 66 onto the Thrust means 61 transmitted is moved in the extension direction 16 towards the key opening 12 , whereby the mechanical key part 35 ″ operated via the actuator 47 ″ is moved out of the housing part 30 ″ into its working position 15 . When the working position 15 is reached , the nose 48 ″ of the actuator 47 ″ moves in front of a stop 49 ″ which is arranged at the end of the opening 44 ″. A locking means 76 ″, which is provided with a run-up slope in the extension direction, is moved behind the latching hook 72 ″ during the extension movement and now prevents the mechanical key part 35 ″ from being retracted via the pushing means 61 and the actuator 47 ″.

When the trigger button 70 ″ is actuated again, the locking means 76 ″ is released again and the mechanical key part 35 ″ can be manually pushed back into the guide channel 37 ″ in the housing part 30 ″. As a result, the pushing means 61 moves past the gear 65 in the reverse direction, which is thereby moved again, so that the spiral spring 60 ″ articulated on the gear 65 and located in the gear 65 is tensioned again with the insertion movement of the mechanical key part 35 ″ , Shortly before the rest position 11 is reached by the mechanical key part 35 ″, the locking means / locking member 76 ′ moves with its run-up slope against the locking hook 72 ″ and pushes past it. The locking hook 72 '' moves under the force of the spring 77 '' behind the locking means / locking member 76 'and blocks a retraction of the mechanical key part 35 ''under the force of the pressure accumulator / coil spring 60 ''. In order to prevent the mechanical key part 35 '' from being inserted too far, a stop 54 '' is provided at the rear end of the opening 44 '', against which the lug 48 '' of the actuator 47 '' when the mechanical key part 35 '' is inserted. moves. At the same time, the blocking means 76 ″ runs against a stop 56 which lies at the end of the wall 42 ″.

In addition to the exemplary embodiments shown here, there are still others Embodiments conceivable. In particular, embodiments are conceivable for which the key opening can be locked by another means, if that mechanical key part is located entirely in the guide channel.

Furthermore, e.g. B. an embodiment conceivable in which a linearly acting and linearly adjustable compression spring directly on an actuator, such as. B. the actuator 47 or 47 '' and such a mechanical key part can be pushed out of a housing part. Such a linear pressure spring can, for. B. in a further guide channel adjacent to the guide channel for the mechanical key part, or have such a rigidity that a guide of the spring element is not necessary.

Likewise, the mechanical key part could be via electrically controlled solenoids or by hydraulic pressure accumulator from the housing part be pushed out. Likewise, frictional locking can also be used instead of locking Brake means are provided, each of which has the mechanical key part Positions.

It is also understood that the connection means between the electrical housing part and the mechanical housing part can also be arranged differently than in the first exemplary embodiment. Thus, the grooves and the locking means projections 28 could also be arranged in the housing base plates 32 ', 32 ''of the second housing parts containing the key mechanism. The dovetail pins 23 would then have to be arranged in the housing base plates 22 of the first housing parts containing the electronics.

LIST OF REFERENCE NUMBERS

10

key

11

rest position

12

key opening

15

working position

16

Out direction / export direction

17

Removal direction

18

mounting direction

19

eyelet

20

first housing part with key electronics

21

Housing cover first housing part

22

Housing base plate first housing part

25

electronic components

27

Groove in the housing base plate

28

Verrastmittelvorsprung

30

second housing part with key mechanism

30

'' second housing part with key mechanism

30

'' second housing part with key mechanism

31

'' Housing cover second housing part

32

Housing base

32

'' Base plate

32

'' Housing base plate

33

male dovetail

35

key part

35

'Key part

35

'' Key part

37

guide channel

37

'' Guide channel

37

'' Guide channel

38

'Flat side

38

'' Flat side

39

'Flat side

40

'Surface wall

40

'' Surface wall

41

'Surface wall

42

'Wall

42

'' Wall

43

'Wall

43

'' Wall

44

'Opening

44

'' Longitudinal opening

46

'Opening

47

'Actuator / gear

47

'' Actuator

48

' Nose

48

'' Nose

49

'' Stop (working position)

49

'' Stop (working position)

53

'' Wall section

54

Stop (rest position)

54

'' Stop (rest position)

54

'' Stop (rest position)

55

Stop for locking agents

76

'

56

Stop for locking agents

76

''

60

Pressure force store

60

'' Pressure accumulator

61

shear center

62

Teeth on the actuator

47

'

62

'' Teeth on the gear

65

63

axis

63

'' Axis

64

Serration on the key

35

'/ Shear center

65

Gear / thrust means

66

Tooth opening / shear center

61

67

channel

68

channel

70

Release button (release means)

70

'' Release button (release agent)

70

'' Release button (release means)

71

'Lever

71

'' Lever

72

'' Lever locking hook

71

72

'' Lever locking hook

71

76

Locking means / recess

76

'Blocking agent

76

'' Blocking agents

77

'' Pressure medium / spring

77

'' Pressure medium / spring

78

'' Feather seat

78

'' Feather seat

79

'Starting point

79

'' Starting point

81

'' Lever axis

81

'' Lever axis

Claims (11)

1. Key, in particular for motor vehicles, with a housing part ( 30 ', 30 '') and a mechanical key part ( 35 ', 35 '') arranged thereon,
in which at least one locking part of the key part ( 35 ', 35 '') by means of facial expressions ( 47 ', 47 '', 60 , 60 '', 61 , 62 , 62 '', 64 , 65 , 66 ) from a rest position ( 11 ) is to be transferred to a working position ( 15 ) in which the key ( 10 ) can be used to mechanically actuate a lock,
wherein to activate the facial expressions ( 47 ', 47 '', 60 , 60 '', 61 , 62 , 62 '', 64 , 65 , 66 ) a manually operated trigger means ( 70 ', 70 '') is provided,
the key part ( 35 ', 35 '') in the working position ( 15 ) essentially rigid,
the key part ( 35 ', 35 '') in its rest position ( 11 ) is arranged in a housing interior ( 36 ),
the key part ( 35 ', 35 '') after actuation of the release means ( 70 ) by means of facial expressions ( 47 ', 47 '', 60 , 60 '', 61 , 62 , 62 '', 64 , 65 , 66 ) from to transfer its rest position ( 11 ) in the housing interior ( 36 ) by a lateral displacement out of the housing part ( 30 ', 30 '') into the working position ( 15 ),
in the housing interior ( 36 ) means ( 37 ', 37 '', 40 ', 40 '', 41 ', 41 '', 42 ', 42 '', 43 ', 43 '') are arranged through which the key part ( 35 ', 35 '') is guided during the longitudinal displacement,
the facial expressions ( 47 ', 47 '', 60 , 60 '', 61 , 62 , 62 '', 64 , 65 , 66 ) comprise a pressure force accumulator ( 60 , 60 '') which is connected indirectly via a thrust means ( 61 , 64 , 65 , 66 ) on the actuator ( 47 ', 47 '') and
the mechanical key part ( 35 ', 35 '') by locking means ( 71 ', 71 '', 72 ', 72 '', 76 , 76 ', 76 '') in its rest ( 11 ) and in its working position ( 15 ) is kept rigid,
characterized by
that the locking means comprise at least one lever ( 71 ', 71 '') with at least one locking hook ( 72 ', 72 ''), which in the working ( 15 ) and / or rest position ( 11 ) each relies on a locking means ( 75 ' , 75 '', 76 , 76 ') and
two self-contained housing parts ( 20 , 30 ) are arranged next to each other, the first housing part ( 20 ) having key electronics and the second housing part ( 30 ) a mechanical key part ( 35 ) and facial expressions ( 47 ', 47 '', 60 , 60 '', 61 , 62 , 62 '', 64 , 65 , 66 ) and in which the two housing parts ( 20 ; 30 , 30 ', 30 '') are reversibly arranged along a single, essentially planar plane. 2. Key according to claim 1, characterized in that in the housing part ( 30 ', 30 '') in the extension direction ( 16 ) of the key part ( 35 ', 35 '') a key opening ( 12 ) is arranged, which is form-fitting to the outer contour of the Key part ( 35 ', 35 '') is formed. 3. Key according to one of claims 1 or 2, characterized in that the housing interior ( 36 ) of the housing part ( 30 ', 30 '') via a locking means arranged at the key opening ( 12 ) of which, the housing part ( 30 ', 30 '') surrounding outdoor space is completed. 4. Key according to claim 1, characterized in that the means for guiding the key part ( 35 ', 35 '') comprise a guide channel ( 37 ). 5. Key according to one of claims 1 to 4, characterized in that the mechanical key part ( 35 ', 35 '') and the facial expressions ( 47 ', 47 '', 60 , 60 '', 61 , 62 , 62 '', 64 , 65 , 66 ) housing housing part ( 30 ', 30 '') has at least two, essentially parallel to each other surface sides ( 38 ', 38 '', 39 ', 39 ''), and these surface sides ( 38 ', 38 '', 39 ', 39 '') on two sides form the flat walls ( 40 ', 40 '', 41 ', 41 '') of the guide channel ( 37 ', 37 ''). 6. Key according to one of claims 1 and 5, characterized in that two substantially parallel walls ( 42 ', 42 ''), substantially perpendicular to the surface walls ( 40 ', 40 '', 41 ', 41 ''), 43 ', 43 '') laterally limit the guide channel ( 37 ). 7. Key according to one of claims 1 and 6, characterized in that at least one wall ( 42 ', 42 '', 43 ', 43 '') of the guide channel has an opening ( 44 ', 44 '') through which a on the mechanical key part ( 35 ', 35 '') acting actuator ( 47 ', 47 '') of the facial expressions passes through the wall ( 42 ', 42 '', 43 ', 43 ''). 8. Key according to one of claims 1 to 7, characterized in that the opening ( 44 ', 44 '') is substantially linear and parallel to the direction of ejection ( 16 ) of the mechanical key part ( 35 ', 35 ''). 9. Key according to claim 1, characterized in that an end stop ( 49 ', 49 '') is provided, against which a on the key part ( 35 ', 35 '') arranged nose ( 48 ', 48 '') to limit the Extending pathways. 10. Key according to one of claims 1 to 9, characterized in that the latching means ( 71 ', 71 '', 72 ', 72 '', 76 , 76 ', 76 '') by actuating the triggering means ( 70 ', 70 '') are released. 11. Key according to claim 1, characterized in that in the area of the planar plane connecting means are arranged on the housing parts ( 20 ', 30 ', 20 '', 30 ''), by means of which the housing parts ( 20 ', 30 ', 20 '', 30 '') are reversibly attached to each other.