EP2431990B1 - Switch - Google Patents

Description

The invention relates to a switch for a door, a flap or a door handle of a motor vehicle, comprising a base body having a receptacle, provided in the receptacle first and a second contact surface, and a snap-action disc, which is arranged in the receptacle, wherein an actuation of the snap disc both contact surfaces are electrically connected to each other, whereby a switching signal can be generated.

In the DE 10 2007 062 907 B3 is described a snap-action disc, which is insertable into a switch. It has disadvantageously been found that the production of such switches can be complicated with a snap-action disc, since a corresponding adjustment of the snap-action disc on the contact surfaces of the receptacle is required, so that a reliable operation is ensured in the assembled state of the switch. It must be ensured that the snap-action disc in the recording so is inserted, that upon actuation of the snap disc always creates an electrical connection between both arranged within the receptacle contact surfaces.

Furthermore, the disclosure EP 0 538 199 A2 an electric pushbutton with a snap-action disc.

The object of the present invention is to avoid the abovementioned disadvantages, in particular to provide a switch which can be produced in a simple and cost-effective manner.

The object of the present invention is achieved by all features of claim 1. In the dependent claims advantageous developments are carried out.

According to the invention it is provided that the switch is designed with a base body having a receptacle. Further, in the receptacle, a first and a second contact surface, wherein the snap-action disc is arranged in the receptacle. In addition, the snap disc has a curved region which lies above the first contact surface and at least three support elements, wherein at least one support element contacts the second contact surface, whereby the domed region elastically deforms via an actuation of the snap-action disc, so that an electrical connection of the two contact surfaces is achievable and thus a switching signal can be generated. Essential to the invention here is that the second contact surface, which has a distance from the first contact surface, at least partially around the first contact surface extends such that in each position of the snap disc at least one support element contacts the second contact surface. A particular advantage of this invention is that the snap disk only has to be introduced into the receptacle of the main body, without the need to align the snap disk within the receptacle according to their position, since it is ensured by the inventive arrangement of the first and the second contact surface the snap disc always touches the second contact surface at least with a support element. A readjustment of the snap disk within the receptacle is thus no longer necessary, whereby the manufacturing cost of a switch can be substantially simplified.

According to the invention it can be provided that the receptacle is circular, oval, square, rectangular or triangular. According to the geometric design of the recording, the snap disc should be adapted with their support elements.

It can be advantageous that the first contact surface is arranged centrally in the receptacle and / or the second contact surface extends along the edge region of the receptacle. If an actuation of the switch, the curved portion of the snap-action disc is elastically deformed, so that a contact of the first contact surface is formed, whereby the snap-action disc made of metal electrically connects the first and the second contact surface. The second contact surface, however, runs at the edge region of the receptacle and has a defined extension length, so that it is ensured that in each position and each position of the snap disk within the receptacle, a contact of one of the support elements is ensured with the second contact surface.

In an advantageous embodiment of the invention, the snap disc can have n support elements, each receiving element is aligned at an angle α = (360 / n) ° to the adjacent receiving element. Thus, it is conceivable that the snap disc has three, four or more support elements, the support elements also serve as "contact legs" to achieve a contact with the second contact surface.

If the receptacle is configured circular, it may be offered in a possible embodiment variant of the invention that the second contact surface extends on a circular path, wherein the length L of the second contact surface L> arc (α) xr, where r is the radius of the circular path is. Thus, it can be ensured that always a support element of the snap-action disc rests on the second contact surface, without the need for complicated adjustment of the snap-action disc during assembly of the switch.

It is also conceivable that the second contact surface is composed of mutually spaced individual contact surfaces. Thus, a plurality of individual contact surfaces form the second contact surface within the receptacle, which are arranged geometrically relative to one another such that in each possible position of the snap disk within the receptacle at least one support element contacts a single contact surface.

In one possible embodiment of the invention, the first and the second contact surfaces may be made of metal, in particular the first and / or the second

Contact surface have a gold coating. An advantage of the gold coating is that the corrosion resistance of the contact surfaces can be substantially increased, whereby the life of the switch can be increased.

In order to further simplify the mounting of the switch, the receptacle can have a sloping wall region, which tapers in the direction of the snap-action disc. The wall area, which runs obliquely, serves as an assembly aid for the snap disc to be used. Here, the wall area is funnel-shaped, wherein in the direction of the recording towards the obliquely extending wall area becomes narrower. During assembly and insertion of the snap-action disk, the snap-action disk slides and / or slides along the inclined wall area and approaches the receptacle. Subsequently, the snap-action disk leaves the contact with the oblique wall region and, with at least one of the support elements, falls onto the second contact surface.

In a conceivable embodiment of the invention, a lid made of plastic, which is attached to the base body, sealingly close the receptacle, wherein in particular the lid is positively and / or non-positively and / or materially secured to the base body. For example, it is possible to attach the cover to the base body via an adhesive connection or a clip connection. Likewise, the cover may be laser welded to the base body. In a further cost-effective alternative, it makes sense that the main body has locking elements which protrude into counter-locking elements of the lid. The cover may, for example, have one or more openings, in the locking elements of the body positively and / or cohesively protrude and thus represent a reliable and cost-effective attachment alternative of the lid on the body. As a result, a reliable cover of the snap disk is achieved within the recording.

In order that an unnecessary movement of the support elements is prevented during the operation of the switch or the snap-action disc, in which the arched area is elastically deformed in the direction of the first contact surface, in one possible embodiment of the invention the cover has a foot element which projects into the receptacle and contacted the support elements, whereby a reliable fixation of the snap-action is achievable. The foot element thus reliably holds each of the support elements on its

Position on the second contact surface. Even if the snap disk is actuated, there is no risk that the support element loses its contact with the second contact surface.

Advantageously, the foot element can run circumferentially, in particular, the foot element is designed annular. The foot element can simultaneously assume a sealing function of the lid. In the case of a circular receptacle, the foot element has a circular configuration which protrudes into the receptacle in the manner of a projection and at the same time contacts the support elements.

In a measure improving the invention it can be provided that the cover has a seal having a first and a second sealing region, wherein the first sealing region is a radial seal and the second sealing region is an axial seal, wherein in particular in a cross-sectional view of the lid the seal is L-shaped. The foot element may in this case be part of the second sealing region, which acts as an axial seal.

Advantageously, the receptacle can be covered by a collar element of the base body, wherein the cover rests on the collar element, wherein in particular the seal contacts the collar element. In this case, the collar element can project from the base body in the manner of a projection, wherein at the same time the collar element delimits the receptacle. The first and the second sealing region can rest against the collar element in the fastened state of the cover. It is also conceivable that the obliquely extending wall region is arranged on the collar element or even integrated in the collar element. Further, the collar member may be configured with corresponding latching elements to ensure a reliable clip connection with the lid.

In one possible embodiment of the invention, the lid may be a two-component plastic part, wherein a first portion of the plastic part is made of a first plastic and a second portion of the plastic part is made of a second plastic, wherein the first plastic is softer than that second plastic. In one possible embodiment of the invention, it is conceivable that the first and / or the second sealing region are at least partially made with the first plastic. It is also conceivable that the foot element is designed with the first plastic.

By using the softer plastic advantageously manufacturing tolerances can be compensated, so that a reliable attachment of the lid is ensured at the receptacle.

Advantageously, the first region of the lid can be designed with an inner contact element which extends in the direction of the curved region of the snap-action disc. In this way, an improved tactile behavior of the switch can be achieved, wherein the inner contact element, which protrudes in the direction of the snap-action disc, may be spaced apart from the snap-action disc when the switch is not actuated or can rest on the curved region of the snap-action disc. The two latter embodiments of the contact element allow, inter alia, to influence the haptic behavior of the switch and to influence the stroke of the switch. If the contact element is located on the snap-action disk without the switch being actuated, the stroke can be considerably reduced, as a result of which a compact overall construction of the switch can be achieved.

It can also be provided that the second region of the cover comprises the first region of the lid, wherein the second region of the lid is attached to the base body. The second portion of the lid, which is made of a harder plastic, can be used for the actual attachment of the lid on the base body, wherein at the same time the second area can take over sealing functions. The first, softer area of the lid, however, serves to provide a corresponding feel for the user.

In a further embodiment of the switch according to the invention, the counter-latching element of the lid can be designed with a latching hook, which is held in the latching element of the base body, wherein the latching element of the base body is designed as an opening. Here, the counter-latching element can be integrated in the second region of the lid. The second region of the lid may have a plurality of counter-locking elements, which are reliably held on the base body via a latching connection. In one possible embodiment of the invention, the lid has two latching hooks, wherein the snap-action pane is located between both counter-latching elements of the lid. An advantage of this embodiment is that on the latching hook, the lid on the base body is easy to install.

It is also conceivable that the second region of the lid has an edge on the underside of the lid, wherein the edge has a seal which is made of the first plastic, wherein in particular the first region is connected to the material of the same material. Thus, in addition to a first and a second sealing area, the lid can have a further seal on the edge of the lid, which creates an additional sealing effect for the switch.

In addition, the first and the second contact surface may each be a component of a first and a second contact element, wherein the first and the second contact element extend from the receptacle. The seal of the edge of the lid causes a reliable sealing of the first and the second contact element, which may extend further outside the lid. On the other hand, the first and second sealing regions, which act as radial and axial seals, serve primarily to reliably seal the components within the receptacle.

In order that the cover, which in one possible embodiment is a two-component plastic part, represents a stable overall construction, the first area and the second area may have a common contact surface, which is in particular stepped and / or staircase-like. The corresponding geometric embodiment of the contact surfaces of the first and the second region of the lid also ensure that a good haptic behavior is ensured when operating the first region, without the risk that the first region of second region dissolves. The step-like and / or staircase-like contact surfaces thus also contribute to a reliable connection of the first area to the second area.

Fig. 1

ein mögliches Ausführungsbeispiel eines erfindungsgemäßen Schalters mit einer Schnappscheibe, einem Deckel und Kontaktflächen, auf denen die Schnappscheibe aufliegt,

Fig. 2

ein weiteres Ausführungsbeispiel eines Schalters mit Schnappscheibe, Kontaktflächen und Deckel,

Fig. 3

eine Draufsicht auf eine Aufnahme des Schalters, in der die Schnappscheibe gemäß Figur 1 einsetzbar ist,

Fig. 4

die Aufnahme gemäß Figur 3, in der die Schnappscheibe eingesetzt ist,

Fig. 5

eine weitere Ausführungsalternative einer Aufnahme gemäß Figur 3,

Fig. 6

der Schalter gemäß Figur 2 in einer weiteren dreidimensionalen Ansicht

Fig. 7

ein weiteres Ausführungsbeispiel eines Schalters mit einer Schnappscheibe, Kontaktflächen sowie einem Deckel,

Fig. 8

ein weiteres Ausführungsbeispiel eines Schalters mit einer Schnappscheibe, Kontaktflächen sowie einem Deckel und

Fig. 9

eine weitere Ansicht auf den Schalter gemäß Figur 8.

Further advantages, features and details of the invention will become apparent from the following description. With reference to the drawings, several embodiments of the invention are described in detail. 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 possible embodiment of a switch according to the invention with a snap-action disc, a lid and contact surfaces on which the snap-action disc rests,

Fig. 2

another embodiment of a switch with snap-action disc, contact surfaces and cover,

Fig. 3

a plan view of a receptacle of the switch, in which the snap disc according to FIG. 1 can be used,

Fig. 4

the recording according to FIG. 3 in which the snap disk is inserted,

Fig. 5

a further alternative embodiment of a recording according to FIG. 3 .

Fig. 6

the switch according to FIG. 2 in another three-dimensional view

Fig. 7

Another embodiment of a switch with a snap-action disc, contact surfaces and a lid,

Fig. 8

a further embodiment of a switch with a snap-action disc, contact surfaces and a lid and

Fig. 9

another view on the switch according to FIG. 8 ,

In all embodiments according to FIG. 1 to FIG. 9 a switch according to the invention is shown, which can be used in a door, in a flap or in a door handle of a motor vehicle. The switch has a main body 10, which is configured with a receptacle 11, in which a snap-action disc 40 can be inserted. The receptacle 11 has a first 31 and a second contact surface 32, which in FIG. 1 to FIG. 5 at least partially shown. According to the exemplary embodiments shown, the first contact surface 31 is arranged centrally in the receptacle 11. The second contact surface 32, however, extends along the edge region of the receptacle 11 and has a defined distance from the first contact surface 31. Here, the receptacle 11 is configured circular. The first contact surface 31 is also circular, with the second contact surface 32 extending along a circular path.

The snap disk 40 has according to FIG. 1, FIG. 2 . FIG. 4 and Figure 7-9 a curved portion 41 which lies above the first contact surface 31. In addition, the Snap disk 40 a plurality of support elements 42, wherein the snap disc 40 and the second contact surface 32 are geometrically matched to each other such that at least one support element 42, the second contact surface 32 contacted. This ensures that in every imaginable installation position of the snap-action disc 40 in the receptacle 11, a secure operation of the switch is ensured, in which via actuation of the snap-action disc 40 both contact surfaces 31, 32 can be electrically connected. It is not necessary, during the manufacture of the switch, after the snap disk 40 is already inserted in the receptacle 11, readjust the snap disk 40 relative to the second contact surface 32 or to rotate about an axis perpendicular to the plane according to FIG. 3 or FIG. 4 extends and extends through the first contact surface 31.

FIG. 3 shows a possible embodiment of the geometric configuration of the second contact surface 32, which extends along a circular path around the first contact surface 31. FIG. 4 shows the snap disc 40, which in the receptacle 11 according to FIG. 3 is used. In this embodiment, two support elements 42 contact the second contact surface 32. According to the invention, however, it would be sufficient if the second contact surface 32 would have only one length, in particular an "arc length", in which only one support element 42 would rest on the second contact surface 32 , which is not explicitly shown. This means that the length L of the contact surface 32 can be described according to the following calculation: L> arc (α) xr, where r is the radius of the circular path and α = (360 / n) °, where n is the number of support elements is.

FIG. 5 shows a further embodiment in which a second contact surface 32 is provided, which is composed of three spaced individual contact surfaces 32. Of course, it is conceivable that the number of individual contact surfaces 32 may vary and the respective lengths of the individual contact surfaces 32. Depending on the geometry of the snap disk 40 and the individual contact surfaces 32 can be ensured that in each position and position of the snap disk 40 is always in contact with at least one support element 42 and a single contact surface 32 is ensured, which is not explicitly shown in the figures.

In FIG. 7 schematically the receptacle 11 is shown, which has a sloping wall portion 12. The wall portion 12 is funnel-shaped.

In this case, the wall region 12 tapers in the direction of the snap-action disk 40, which rests with its support elements 42 on the second contact surface 32. An advantage of an inclined wall portion 12 is that during the manufacture of the switch and the insertion of the snap-action disc 40, the snap-action disc 40 in the receptacle 11 can be simply "thrown", while the wall portion 12 ensures that the snap-action disc 40 reliably the Way into the receptacle 11 on the contact surfaces 31, 32 finds. In this case, the snap-action disc 40 slides with its support elements 42 along the wall region 12 until the snap-action disc 40 falls into the receptacle 11. The wall region 12 thus serves as an assembly aid for the snap-action disc 40.

As in the FIGS. 1, 2 and Figure 7-9 is shown, the cover 20 has a foot member 22 which projects into the receptacle 11 and the support elements 42 contacted. In this way, a reliable hold of the snap-action disc 40 is achieved in the installed state, without the risk that upon actuation of the switch one or more support elements 42 are released from contact with the second contact surface 32. Here, the foot member 22 is circumferential, annular.

As in particular in FIG. 1, FIG. 2 such as FIG. 7 can be seen, the receptacle 11 is covered by a collar member 14 of the main body 10. The collar element 14 in this case represents a kind of wall. In FIG. 1 is a possible embodiment for fixing the lid 20 on the main body 10 is shown. In this case, the lid 20 is laser welded to the collar member 14, whereby a reliable sealing of the encapsulated receptacle 11 is achieved. It is also conceivable in another embodiment that the lid 20 is secured to the collar member 14 via an adhesive bond.

According to FIG. 2 . FIG. 6 such as Figure 7-8 a further embodiment for fixing the lid 20 is shown on the base body 10, wherein the lid 20 is attached via a clip connection to the base body 10. Here, the base body 10 hook-shaped locking elements 13 which engage in counter-locking elements 21, in particular openings 21 of the lid 20 and thus ensure a reliable attachment of the lid 20 on the base body 10. In order to ensure a reliable sealing of the inner region of the receptacle 11, the cover 20 has a seal 23 which, according to FIG. 2 a first 23.1 and a second sealing region 23.2. The Seal 23 is designed in the cross section of the lid 20 L-shaped. Here, the lid 20 is a two-component plastic part, wherein the seal 23 consists of a first plastic. In this case, the cover 20 has a first region 24, which is arranged centrally on the cover 20. The second region 25 comprises the first region 24, wherein the second region 25 of the lid 20 is harder than the first region 24. In addition, the first region 24 of the lid 20 is designed with an inner contact element 26, which in the direction of the curved portion 41 of Snap disk 40 extends. In the following exemplary embodiment, the first region 24 of the lid 20 is made of the same first plastic as the seal 23.

In FIGS. 8 and 9 a further variant of an embodiment is shown, wherein the lid 20 is a two-component plastic part. The first region 24 of the lid 20 serves as a button for the snap-action disc 40. The second region 25 of the lid 20 is formed with a counter-latching element 21, wherein the counter-latching element 21 is designed at its free end with a latching hook 21.1. In the present embodiment, the cover 20 has two counter-locking elements 21, each with a latching hook 21.1, wherein each counter-latching element 21 protrudes through a latching element 13 of the base body 10. The latching element 13 of the base body 10 is formed as an opening in which the counter-latching element 21 of the lid 20 is held reliably. This connection of the cover 20 on the base body 10 represents a reliable and simple latching connection. The second region 25 of the cover 20 is hereby made with the harder second plastic so that a reliable fixation of the lid 20 on the base body 10 is ensured. The first region 24 of the lid 20, however, is designed with the first plastic, which is made softer than the second plastic. As in the other embodiments according to FIG. 1 to FIG. 7 serves the first portion 24 of the lid 20 as a button to deform the underlying snap disk 40 accordingly.

As in FIG. 9 can be clearly seen, the second portion 25 of the lid 20 has an edge 25.1 on the bottom 27 of the lid 20. This edge 25.1 has a seal 28 which is made of the first plastic. Here, the first region 24 is connected to the seal 28 of the same material. The first 31 and the second contact surface 32 are each a component of a first 31A and a second contact element 32A. Here, the first 31 and the second contact surface 32 in the receptacle 11 of the The main body 10. The first and the second contact element 31A, 32A extend from the receptacle 11 and leave the lid 20 at the location which is designated by the reference numeral 29. In a further embodiment alternative, which is not explicitly shown, both contact elements 31A and 32A can be perpendicular to the plane of the drawing FIG. 8 extend. So that the cover 20 made of two components has good haptic properties and a high durability, the first region 24 and the second region 25 are designed with a common contact surface 24.2, 25.2, which has a staircase-like geometry.

Of course, it is conceivable that further embodiments of a snap-action disc 40 can be used in this invention, which may have, for example, three or more than four support elements 42. It is also contemplated in the spirit of the invention that the receptacle 11 may take on a geometric shape that deviates from the circular configuration shown in the embodiments. The arrangement of the first 31 and the second contact surface 32 may vary within the receptacle 11. In order to increase the longevity of the switch, the first 31 and the second contact surface 32 as well as the snap-action disk 40, in particular the curved region 41 and the support elements 42, may have a coating, in particular at least of Au and / or Ni and / or Ag and / or or Sn exists.

It is also conceivable that according to all embodiments, the cover 20 is made entirely of the soft plastic, as the first region 24th

LIST OF REFERENCE NUMBERS

10

body

11

admission

12

wall region

13

locking element

14

collar element

20

cover

21

Counter catch element, opening

21.1

latch hook

22

foot element

23

seal

23.1

first sealing area

23.2

second sealing area

24

first area of the lid

24.2

contact area

25

second area of the lid

25.1

edge

25.2

contact area

26

internal contact element

27

bottom

28

poetry

29

Position, location, location

31

first contact surface

31A

first contact element

32

second contact surface

32A

second contact element

40

snap disk

41

arched area of the snap disc

42

support element

Claims (16)

1. A switch for a door, a flap or a door handle of a motor vehicle, with a basic body (10), comprising a support (11),
   a first (31) and a second contact surface (32) provided in the support (11),
   a snap dome (40), which is arranged in the support (11) and has a domed region (41), which is located above the first contact surface (31), and comprises at least three support elements (42), wherein at least one support element (42) contacts the second contact surface (32), wherein by way of actuating the snap dome (40) the domed region (41) elastically deforms so that an electrical connection of the two contact surfaces (31, 32) is achievable and thus a switching signal is generatable, characterized in that
   the second contact surface (32), which is spaced from the first contact surface (31), extends at least in regions around the first contact surface (31) within the support (11) in such a manner that in each position of the snap dome (40) within the support (11), which is possible for the snap dome (40) upon introducing the snap dome (40) into the support (11) during the production of the switch, at least one support element (42) touches the second contact surface (32) so that a readjustment of the snap dome (40) within the support (11) is no longer necessary.
2. The switch according to Claim 1, characterized in that the support (11) is configured circular, oval, square, rectangular or triangular.
3. The switch according to Claim 1 or 2, characterized in that the first contact surface (31) is arranged in the centre of the support (11) and/or the second contact surface (32) extends along the edge region of the support (11).
4. The switch according to any one of the preceding claims, characterized in that the snap dome (40) comprises n support elements (42), wherein each support element (11) is orientated at an angle α=(360/n)° to the neighbouring support element (11), wherein in particular the second contact surface (32) extends on a circular path wherein the length of the second contact surface (32) is L > arc (α)x r, wherein r is the radius of the circular path.
5. The switch according to any one of the preceding claims, characterized in that the second contact surface (32) is composed of individual contact surfaces that are spaced from one another and/or in that the first (31) and the second contact surfaces (32) are made of metal, in particular that the first (31) and the second contact surfaces (32) have a gold coating.
6. The switch according to any one of the preceding claims, characterized in that the support (11) has an obliquely running wall region (12), which tapers in the direction of the snap dome (40).
7. The switch according to any one of the preceding claims, characterized in that a lid (20) of plastic, which is fastened on the basic body (10), sealingly closes the support (11), wherein in particular the lid (20) is fastened in a form-fitting and/or force-fitting and/or materially joined manner, and/or in that the basic body (10) comprises engagement elements (13), which project into mating engagement elements (21) of the lid (20).
8. The switch according to Claims 7, characterized in that the lid (20) comprises a foot element (22), which projects into the support (11) and contacts the support elements (42), as a result of which a reliable fixing of the snap dome (40) is achievable, wherein in particular the foot element (22) runs circumferentially, in particular that the foot element (22) is configured annular.
9. The switch according to any one of the preceding claims, characterized in that the lid (20) comprises a seal (23), which comprises a first (23.1) and a second sealing region (23.2), wherein the first sealing region (23.1) is a radial seal and the second sealing region (23.2) is an axial seal, wherein in particular in a cross-sectional view of the lid (20) the seal (23) is L-shaped.
10. The switch according to any one of the preceding claims, characterized in that the support (11) is embraced by a collar element (14) of the basic body (10), wherein the lid (20) is supported on the collar element (14), wherein in particular the seal (23) contacts the collar element (14).
11. The switch according to any one of the preceding claims, characterized in that the lid (20) is a two-component plastic part, wherein a first region (24) of the plastic part is produced from a first plastic and a second region (25) of the plastic part is produced from a second plastic, wherein the first plastic is softer than the second plastic, wherein in particular the first region (24) of the lid (20) is embodied with an internal contact element (26), which extends in the direction of the domed region (42) of the snap dome (40).
12. The switch according to Claim 11, characterized in that the second region (25) of the lid (20) embraces the first region (24) of the lid (20), wherein the second region (25) of the lid (20) is fastened on the basic body (10).
13. The switch according to any one of the preceding claims, characterized in that the domed region (41) of the snap dome (40) and the support elements (42) have a coating, in particular the coating consists at least of Au and/or Ni and/or Ag and/or Sn.
14. The switch according to any one of the preceding claims, characterized in that the mating engagement element (21) of the lid (20) is embodied with an engagement hook (21.1), which is held in the engagement element (13) of the basic body (10), wherein the engagement element (13) of the basic body (10) is embodied as opening and/or in that the second region (25) of the lid (20) comprises at least one mating engagement element (21).
15. The switch according to any one of the preceding claims, characterized in that the second region (25) of the lid (20) has an edge (25.1) on the lower side (27) of the lid (20), wherein the edge (25.1) comprises a seal (28), which is embodied from the first plastic, wherein in particular the first region (24) is material-uniformly connected to the seal (28).
16. The switch according to any one of the preceding claims, characterized in that the first (31) and the second contact surface (32) each is a part of a first (31A) and a second contact element (32A), wherein the first (31A) and the second contact element (32A) extend out of the support (11) and/or the first region (24) and the second region (25) have a common contact surface (24.2, 25.2), which is embodied in particular step-like and/or stair-like.

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